WO2024093702A1 - 阵列基板及显示装置 - Google Patents
阵列基板及显示装置 Download PDFInfo
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- WO2024093702A1 WO2024093702A1 PCT/CN2023/125969 CN2023125969W WO2024093702A1 WO 2024093702 A1 WO2024093702 A1 WO 2024093702A1 CN 2023125969 W CN2023125969 W CN 2023125969W WO 2024093702 A1 WO2024093702 A1 WO 2024093702A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/421—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer
- H10D86/423—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0408—Integration of the drivers onto the display substrate
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
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- G—PHYSICS
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- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
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- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0814—Several active elements per pixel in active matrix panels used for selection purposes, e.g. logical AND for partial update
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
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- G09G2300/0809—Several active elements per pixel in active matrix panels
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- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0852—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory with more than one capacitor
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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- G09G2310/0224—Details of interlacing
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- G09G2320/02—Improving the quality of display appearance
- G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
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- G09G2320/04—Maintaining the quality of display appearance
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- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
Definitions
- the present disclosure relates to the field of display technology, and in particular to an array substrate and a display device.
- AMOLED Active-Matrix Organic Light Emitting Diode
- an array substrate comprising: a substrate and a plurality of pixel driving circuits disposed on the substrate, each of the plurality of pixel driving circuits comprising: a transistor, the transistor comprising: a driving transistor, a data writing transistor and a first light emitting control transistor.
- the array substrate further comprises: a first polar region and a second polar region of the transistor, the first polar region of the driving transistor, the second polar region of the data writing transistor and the second polar region of the first light emitting control transistor being connected to form a conductive connection pattern, and the conductive connection pattern is a continuous pattern.
- the multiple pixel driving circuits are configured as: an odd-numbered row circuit group and an even-numbered row circuit group, the odd-numbered row circuit group and the even-numbered row circuit group include a plurality of the pixel driving circuits arranged along a first direction, and along a second direction, the odd-numbered row circuit group and the even-numbered row circuit group are alternately arranged, and the first direction and the second direction intersect.
- the array substrate further includes: a conductive pattern, wherein the conductive pattern includes a pattern in the pixel driving circuit that is located in a different layer from the conductive connection pattern.
- An overlapping area between the conductive connection pattern of at least one pixel driving circuit in the odd-numbered circuit group and an orthographic projection of the conductive pattern on the substrate is smaller than an overlapping area between the conductive connection pattern of at least one pixel driving circuit in the even-numbered circuit group and an orthographic projection of the conductive pattern on the substrate.
- the transistor further includes: a compensation transistor
- the array substrate further includes: a gate pattern of the compensation transistor and a second scanning signal line, the gate pattern of the compensation transistor is electrically connected to the second scanning signal line; the second electrode region of the compensation transistor is connected to the second electrode region of the driving transistor.
- the plurality of pixel driving circuits are further configured as: a plurality of pixel group units sequentially arranged along the second direction, each of the plurality of pixel group units including: the odd-numbered row circuit group and the even-numbered row circuit group arranged adjacent to the odd-numbered row circuit group. Each of the pixel group units shares one second scanning signal line.
- the array substrate further includes: a first semiconductor layer disposed on the base, and the conductive connection pattern is located in the first semiconductor layer.
- the array substrate further comprises: a shielding layer disposed on the substrate, and a first semiconductor layer disposed on a side of the shielding layer away from the substrate.
- the conductive pattern is located on the shielding layer.
- the array substrate further includes: a first gate conductive layer disposed on a side of the first semiconductor layer away from the substrate, and a second gate conductive layer disposed on a side of the first gate conductive layer away from the substrate.
- the pixel driving circuit further includes: a capacitor and a compensation transistor, the capacitor including: a first electrode plate and a second electrode plate, the first electrode plate being located in the first gate conductive layer, and the second electrode plate being located in the second gate conductive layer.
- the first electrode plate is electrically connected to a first electrode region of the compensation transistor, and the second electrode plate is electrically connected to a power signal line.
- the conductive pattern includes: a first portion located in the shielding layer and a second portion electrically connected to the second electrode plate.
- the array substrate further comprises: a first gate conductive layer disposed on a side of the first semiconductor layer away from the substrate, and a second gate conductive layer disposed on a side of the first gate conductive layer away from the substrate.
- the conductive pattern is located in the second gate conductive layer.
- the area of the orthographic projection of the conductive pattern in the odd-numbered circuit group on the substrate is equal to the area of the orthographic projection of the conductive pattern in the even-numbered circuit group on the substrate.
- the conductive connection pattern is connected to a first extended pattern located in the first semiconductor layer, and the orthographic projection of the conductive pattern on the substrate covers the orthographic projection of the first extended pattern on the substrate.
- the array substrate further comprises: a second gate conductive layer disposed on a side of the first semiconductor layer away from the substrate.
- the array substrate further comprises a second scanning signal line, the second scanning signal line being located in the second gate conductive layer.
- the conductive pattern and the second scanning signal line are an integrated structure.
- the array substrate further includes: a first source-drain metal layer disposed on a side of the first semiconductor layer away from the substrate, the first source-drain metal layer including a third extension pattern, and the third extension pattern is connected to the conductive connection pattern through a via.
- the array substrate further includes: a second source-drain metal layer disposed on a side of the first source-drain metal layer away from the substrate, the second source-drain metal layer including a power signal line.
- the conductive pattern and the power signal line are an integral structure, and an overlapping area of an orthographic projection of the third extension pattern in the odd-numbered circuit group on the substrate and an orthographic projection of the conductive pattern on the substrate is smaller than an overlapping area of an orthographic projection of the third extension pattern in the even-numbered circuit group on the substrate and an orthographic projection of the conductive pattern on the substrate. product.
- an orthographic projection of the data signal line on the substrate does not overlap with an orthographic projection of the third extended pattern on the substrate.
- an orthographic projection of the third extended pattern on the substrate overlaps with an orthographic projection of the conductive connection pattern on the substrate.
- the transistor includes: a first reset transistor, a compensation transistor, a second light-emitting control transistor, and a second reset transistor.
- the array substrate also includes: a first initial signal line, a second initial signal line, a data signal line, and a power signal line.
- the first region of the first reset transistor is electrically connected to the first initial signal line
- the second region of the first reset transistor is electrically connected to the first region of the compensation transistor
- the second region of the compensation transistor is electrically connected to the second region of the driving transistor.
- the first region of the second light-emitting control transistor is electrically connected to the second region of the driving transistor, the second region of the second light-emitting control transistor is electrically connected to the second region of the second reset transistor, and the first region of the second reset transistor is electrically connected to the second initial signal line.
- the first region of the data write transistor is electrically connected to the data signal line, and the first region of the first light-emitting control transistor is electrically connected to the power signal line.
- the array substrate further includes: a gate pattern of the first reset transistor, a reset signal line, a gate pattern of the second reset transistor, a first scan signal line, a gate pattern of the first light emission control transistor, a gate pattern of the second light emission control transistor, and a light emission control signal line.
- the gate pattern of the first reset transistor is electrically connected to the reset signal line
- the gate pattern of the second reset transistor is electrically connected to the first scan signal line
- the gate pattern of the first light emission control transistor and the gate pattern of the second light emission control transistor are electrically connected to the light emission control signal line.
- the array substrate also includes: a first semiconductor layer arranged on one side of the substrate, the conductive connection pattern is located in the first semiconductor layer; a first gate conductive layer arranged on a side of the first semiconductor layer away from the substrate, the first scanning signal line and the light-emitting control signal line are located in the first gate conductive layer; a second gate conductive layer arranged on a side of the first gate conductive layer away from the substrate, the first initial signal line and the reset signal line are located in the second gate conductive layer; a first source-drain metal layer arranged on a side of the second gate conductive layer away from the substrate, the second initial signal line is located in the first source-drain metal layer; a second source-drain metal layer arranged on a side of the first source-drain metal layer away from the substrate, the data signal line and the power signal line are located in the second source-drain metal layer.
- the compensation transistor and the first reset transistor include oxide thin film transistors.
- the array substrate further includes: a conductive layer disposed between the second gate conductive layer and the first source and drain metal A second semiconductor layer and a third gate conductive layer are provided between the layers, and the third gate conductive layer is provided on a side of the second semiconductor layer away from the substrate.
- an array substrate comprising: a substrate and a plurality of pixel driving circuits arranged on the substrate.
- Each of the plurality of pixel driving circuits comprises: a transistor, and the transistor comprises: a driving transistor, a data writing transistor and a first light emitting control transistor.
- the array substrate further comprises: a first polar region and a second polar region of the transistor; the first polar region of the driving transistor, the second polar region of the data writing transistor and the second polar region of the first light emitting control transistor are connected to form a conductive connection pattern, and the conductive connection pattern is a continuous pattern.
- the plurality of pixel driving circuits are configured as: an odd-numbered circuit group and an even-numbered circuit group, wherein the odd-numbered circuit group and the even-numbered circuit group include a plurality of the pixel driving circuits arranged along a first direction. Along a second direction, the odd-numbered circuit group and the even-numbered circuit group are alternately arranged; the first direction and the second direction intersect.
- the array substrate further includes: a conductive pattern, wherein the conductive pattern includes a pattern in the pixel driving circuit that is located at a different layer from the conductive connection pattern.
- the capacitance of the capacitor formed between the conductive connection pattern and the conductive pattern of at least one pixel driving circuit in the odd-numbered circuit group is smaller than the capacitance of the capacitor formed between the conductive connection pattern and the conductive pattern of at least one pixel driving circuit in the even-numbered circuit group.
- the insulating layer between the conductive connection pattern and the conductive pattern of at least one pixel driving circuit in the odd-numbered circuit group and the insulating layer between the conductive connection pattern and the conductive pattern of at least one pixel driving circuit in the even-numbered circuit group are made of the same material.
- the insulating layer between the conductive connection pattern and the conductive pattern of at least one pixel driving circuit in the odd-numbered row circuit group, and the insulating layer between the conductive connection pattern and the conductive pattern of at least one pixel driving circuit in the even-numbered row circuit group include at least one insulating layer of the same material.
- a display device comprising the array substrate as described in any one of the above embodiments.
- FIG1 is a structural diagram of a display panel provided according to some embodiments.
- FIG2 is an equivalent circuit diagram of a pixel driving circuit according to some embodiments.
- FIG3 is a timing diagram of a pixel driving circuit provided based on FIG2 according to some embodiments.
- FIG4 is a structural diagram of an array substrate provided according to some embodiments of the present disclosure.
- FIG5 is an equivalent circuit diagram of a pixel driving circuit provided according to some embodiments of the present disclosure.
- FIG. 6 is a structural diagram of a shielding layer, a first semiconductor layer, and a first gate conductive layer after being superimposed according to some embodiments of the present disclosure
- FIG7 is another equivalent circuit diagram of a pixel driving circuit provided according to some embodiments of the present disclosure.
- FIG8 is a timing diagram of a pixel driving circuit provided based on FIG7 according to some embodiments of the present disclosure.
- FIG. 9 is a structural diagram of a first semiconductor layer, a first gate conductive layer, a second gate conductive layer, a second semiconductor layer and a third gate conductive layer after being superimposed according to some embodiments of the present disclosure
- FIG10 is a structural diagram of a display panel provided according to some embodiments of the present disclosure.
- FIG11 is a structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer after being superimposed according to some embodiments of the present disclosure
- FIG12 is a partial structural diagram of a shielding layer, a first semiconductor layer, and a second gate conductive layer after being superimposed according to some embodiments of the present disclosure
- FIG. 13 is a structural diagram of a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer after being superimposed according to some embodiments of the present disclosure
- FIG14 is another structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer stacked according to some embodiments of the present disclosure
- FIG15 is another structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer stacked according to some embodiments of the present disclosure
- 16 is a structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, a second gate conductive layer and a first source-drain metal layer after being superimposed according to some embodiments of the present disclosure
- 17 is a structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, a second gate conductive layer, a first source-drain metal layer, and a second source-drain metal layer after being stacked according to some embodiments of the present disclosure;
- 18 is another structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, a second gate conductive layer, a first source-drain metal layer, and a second source-drain metal layer superimposed according to some embodiments of the present disclosure;
- 19 is a structural diagram of a shielding layer, a first semiconductor layer, a first gate conductive layer, a second gate conductive layer, a second semiconductor layer, a third gate conductive layer, a first source-drain metal layer, and a second source-drain metal layer after being stacked according to some embodiments of the present disclosure;
- FIG20 is another structural diagram of a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer stacked according to some embodiments of the present disclosure
- FIG21 is another equivalent circuit diagram of a pixel driving circuit provided according to some embodiments of the present disclosure.
- FIG22 is another structural diagram of a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer stacked according to some embodiments of the present disclosure
- FIG23 is another structural diagram of a first semiconductor layer, a first gate conductive layer, and a second gate conductive layer stacked according to some embodiments of the present disclosure
- FIG. 24 is a structural diagram of a display device provided according to some embodiments of the present disclosure.
- first and second are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
- a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
- plural means two or more.
- Coupled When describing some embodiments, the expressions “coupled” and “connected” and their derivatives may be used.
- the term “connected” should be understood in a broad sense. For example, “connected” can be a fixed connection or a detachable connection. or integrated; may be directly connected or indirectly connected through an intermediate medium.
- the term “coupled” indicates, for example, that two or more components are in direct physical or electrical contact.
- the term “coupled” or “communicatively coupled” may also refer to two or more components that are not in direct contact with each other but still cooperate or interact with each other.
- the embodiments disclosed herein are not necessarily limited to the contents of this document.
- At least one of A, B, and C has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.
- a and/or B includes the following three combinations: A only, B only, and a combination of A and B.
- parallel includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°;
- perpendicular includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 5°.
- equal includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, the difference between the two equalities is less than or equal to 5% of either one.
- Exemplary embodiments are described herein with reference to cross-sectional views and/or plan views that are idealized exemplary drawings.
- the thickness of the layers and the area of the regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and/or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.
- OLED organic light emitting diode
- AMOLED active-matrix organic light emitting diode
- the pixel driving circuit 10' includes: a light-emitting control signal line EM, a first scanning signal line Gate1, and a second scanning signal line Gate2.
- the GOA (Gate on Array, array substrate row drive) circuit of the first scanning signal line Gate1 drives one row by one row
- the GOA circuit of the first scanning signal line Gate1 includes: an odd-row GOA circuit (Gate1-odd GOA) and an even-row GOA circuit (Gate1-even GOA).
- the GOA circuit of the light-emitting control signal line EM and the GOA circuit of the second scanning signal line Gate2 adopt a driving architecture of one GOA circuit driving two rows (i.e., one driving two). That is, the GOA circuit of the light-emitting control signal line EM and the GOA circuit of the second scanning signal line Gate2 drive the two rows of pixel driving circuits 10' located in the display area AA.
- the compensation transistors T2 in two adjacent rows of pixel driving circuits 10' are driven by the same second scanning signal line Gate2.
- the first reset transistor T1 and the compensation transistor T2 use LTPO (Low Temperature Polycrystalline Oxide) transistors, which are turned on at a high level, and the remaining transistors use LTPS (Low Temperature Poly-silicon) P-type transistors, which are turned on at a low level.
- LTPO Low Temperature Polycrystalline Oxide
- LTPS Low Temperature Poly-silicon
- FIG3 it is a driving timing diagram corresponding to the pixel driving circuit 10' shown in FIG2, which is mainly divided into 6 stages: 1 The light emitting control signal line EM and the reset signal line Reset are both at high level, and the first node N1 is reset by the first initial signal line Vinit1 signal; 2 The second scanning signal line Gate2 jumps to a high level, and the compensation transistors T2 of the odd-numbered row odd and the even-numbered row even pixel driving circuit 10' are turned on at the same time; 3 The scanning signal Gate1-odd of the first scanning signal line Gate1 of the odd-numbered row odd is at a low level, and the data signal write of the odd-numbered row odd is turned on; 4 The scanning signal Gate1-even of the first scanning signal line Gate1 of the even row even is at a low level, and the data signal writing and the threshold compensation of the driving transistor T3 of the even row even are carried out simultaneously; 5 The odd row odd and the even row even simultaneously use the parasitic capacitance of the second no
- the cut-off duration of the Gate2 signal is b, and duration a is longer than duration b.
- the pixel driving circuit 10' After the signal of the first scanning signal line Gate1 is turned off, no matter it is the odd row odd or the even row even, the pixel driving circuit 10' will continue to write the data signal to the first node N1 and compensate the threshold value through the parasitic capacitance Ct of the second node N2 through the driving transistor T3. Since the parasitic capacitance Ct of the second node N2 of the pixel driving circuit 10' of the odd row odd and the pixel driving circuit 10' of the even row even is exactly the same, but the duration a and duration b of the odd row odd and the even row even continuing to write the data signal are different, and the duration a is longer than the duration b.
- the compensation results of the odd row odd and the even row even will be different under the same data signal voltage, which is finally reflected in the display of the display panel 100' as the odd row odd is dark and the even row even is bright, resulting in poor display problems and affecting the quality of the picture.
- the present disclosure provides an array substrate 1, as shown in FIG4, the array substrate 1 includes a substrate 101 and a plurality of pixel driving circuits 10 disposed on the substrate 101.
- each of the plurality of pixel driving circuits 10 includes: a transistor, and the transistor includes: a driving transistor T3, a data writing transistor T4 and a first light emitting control transistor T5.
- the array substrate 1 also includes: a first electrode region and a second electrode region of the transistor, the first electrode region S3 of the driving transistor T3, the second electrode region D4 of the data writing transistor T4 and the second electrode region D5 of the first light-emitting control transistor T5 are connected as a conductive connection pattern M1, and the conductive connection pattern M1 is a continuous pattern.
- the electrical connection point of the driving transistor T3, the data writing transistor T4 and the first light emission control transistor T5 is the node N2. Therefore, in the layout design of the array substrate 1, the conductive connection pattern M1 area corresponds to the second node N2 in the pixel driving circuit 10.
- the transistor includes: a first electrode and a second electrode, the first electrode of the transistor in the pixel driving circuit 10 corresponds to the first electrode region of the transistor in the layout design of the array substrate 1, and the second electrode of the transistor in the pixel driving circuit 10 corresponds to the second electrode region of the transistor in the layout design of the array substrate 1.
- the first electrode region S3 of the driving transistor T3 in FIG6 corresponds to the first electrode s3 of the driving transistor T3 in FIG5.
- the second electrode region D4 of the data writing transistor T4 in FIG6 corresponds to the second electrode d4 of the data writing transistor T4 in FIG5.
- the second electrode region D5 of the first light-emitting control transistor T5 in FIG6 corresponds to the second electrode d5 of the first light-emitting control transistor T5 in FIG5.
- the conductive connection pattern M1 connecting the first electrode region S3 of the driving transistor T3, the second electrode region D4 of the data writing transistor T4 and the second electrode region D5 of the first light emission control transistor T5 in FIG6 corresponds to the first electrode s3 of the driving transistor T3, the second electrode d4 of the data writing transistor T4 and the second electrode d5 of the first light emission control transistor T5 electrically connected to the junction point, i.e., the node N2.
- the conductive connection pattern M1 region corresponds to the second node N2 in the pixel driving circuit 10 , which means that the parasitic capacitance existing at the second node N2 is caused by the parasitic capacitance generated in the conductive connection pattern M1 region in the layout design of the array substrate 1 .
- parasitic capacitance the capacitance is not originally designed here, but because there is always mutual capacitance between the wirings, the mutual capacitance can be considered to be parasitic between the wirings, so it is called parasitic capacitance, also known as stray capacitance.
- the nodes do not represent actual components, but rather represent the junction points of related electrical connections in the circuit diagram, that is, these nodes are nodes formed by the junction points of related electrical connections in the circuit diagram being equivalent.
- the plurality of pixel driving circuits 10 are configured as an odd-numbered row circuit group O1 and an even-numbered row circuit group E1, wherein the odd-numbered row circuit group O1 and the even-numbered row circuit group E1 include a plurality of pixel driving circuits 10 arranged along a first direction X.
- the odd-numbered row circuit group O1 and the even-numbered row circuit group E1 are alternately arranged along a second direction Y.
- the first direction X and the second direction Y intersect.
- the first direction X is the row direction in which the plurality of pixel driving circuits 10 are arranged, and the pixel driving circuits 10 in each row are referred to as a circuit group.
- the second direction Y is the column direction in which the plurality of pixel driving circuits 10 are arranged, and the plurality of circuit groups are arranged along the second direction Y, namely the first row, the second row, the third row...the nth row, wherein the first row, the third row, the fifth row...are all located in odd rows, and can all be referred to as odd row circuit groups O1.
- first direction X and the second direction Y are perpendicular to each other.
- the array substrate 1 further includes: a conductive pattern Q, the conductive pattern Q including a pattern in the pixel driving circuit 10 located in a different layer from the conductive connection pattern M1.
- the overlapping area of the orthographic projection of the conductive pattern M1 and the conductive pattern Q of at least one pixel driving circuit 10 in the odd-numbered row circuit group O1 on the substrate 101 is smaller than the overlapping area of the orthographic projection of the conductive connection pattern M1 and the conductive pattern Q of at least one pixel driving circuit 10 in the even-numbered row circuit group E1 on the substrate 101.
- orthographic projection in the present disclosure refers to the projection generated by projection lines that are perpendicular to the projection plane and parallel to each other.
- the pixel driving circuit 10 is disposed on a substrate 101 .
- the substrate 101 is not shown in FIGS. 5 to 17 , and the position of the substrate 101 can be referred to as shown in FIG. 4 .
- the conductive pattern Q of the odd-numbered circuit group O1 is represented as a first conductive pattern Q1
- the conductive pattern Q of the even-numbered circuit group E1 is represented as a second conductive pattern Q2 .
- parasitic capacitance is generated between the conductive pattern Q and the conductive connection pattern M1, and the magnitude of the parasitic capacitance is related to the magnitude of the overlapping area of the orthographic projections of the conductive pattern Q and the conductive connection pattern M1 on the substrate 101.
- the parasitic capacitance Ce generated by the even-numbered circuit group E1 at the second node N2 is greater than the parasitic capacitance Ce generated by the odd-numbered circuit group O1 at the second node N2.
- the duration a and duration b of the odd row odd and the even row even for continuing to write the data signal are different, and the duration a is longer than the duration b.
- the present disclosure differentially designs the parasitic capacitance Ce of the second node N2 of the odd row circuit group O1 and the parasitic capacitance Ce of the second node N2 of the even row circuit group E1, and designs the parasitic capacitance Ce of the second node N2 of the odd row circuit group O1 to be smaller, and designs the parasitic capacitance Ce of the second node N2 of the even row circuit group E1 to be larger.
- the compensation time a of the compensation transistor T2 in the odd-numbered circuit group O1 is greater than the compensation time b of the compensation transistor T2 in the even-numbered circuit group E1
- the parasitic capacitance Ce of the second node N2 in the even-numbered circuit group E1 is greater than the parasitic capacitance Co of the second node N2 in the odd-numbered circuit group O1.
- the compensation time b in the even-numbered circuit group E1 is shorter than the compensation time a in the odd-numbered circuit group O1 since the potential of the second node N2 in the even-numbered circuit group E1 drops slowly, the amount of charge written in the same time is greater, and finally the compensation effects of the odd-numbered circuit group O1 and the even-numbered circuit group E1 are consistent.
- the light-emitting devices L driven by the pixel driving circuit 10 of the odd-row circuit group O1 and the pixel driving circuit 10 of the even-row circuit group E1 have no difference in luminous brightness, thereby solving the problem of brightness difference between odd and even rows caused by inconsistent compensation durations of the compensation transistors T2 of the odd-and-even row pixel driving circuits 10, and improving the image quality of the display panel 100.
- the conductive pattern Q is located in a pattern in the pixel driving circuit 10 that is located in a different layer from the conductive connection pattern M1.
- the conductive pattern Q is not connected to the conductive connection pattern M1;
- the electrical connection patterns M1 are located in different film layers.
- the transistor further includes: a compensation transistor T2.
- the array substrate 1 further includes: a gate pattern G2 of the compensation transistor T2 and a second scanning signal line Gate2, and a gate pattern G4 of the compensation transistor T2 is electrically connected to the second scanning signal line Gate2.
- the second electrode region D2 of the compensation transistor T2 is connected to the second electrode region D3 of the driving transistor T3.
- the multiple pixel driving circuits 10 are also configured as: a plurality of pixel group units 70 arranged in sequence along the second direction Y, each pixel group unit 70 in the multiple pixel group units 70 includes: an odd-numbered row circuit group O1 and an even-numbered row circuit group E1 arranged adjacent to the odd-numbered row circuit group O1, and each pixel group unit 70 shares a second scanning signal line Gate2.
- the second direction Y is the column direction in which multiple pixel driving circuits 10 are arranged, and multiple circuit groups are arranged along the second direction Y, namely the first row, the second row, the third row...the nth row, wherein the first row and the second row are a pixel group unit 70, the third row and the fourth row are a pixel group unit 70, the fifth row and the sixth row are a pixel group unit 70..., and each pixel group unit 70 shares a second scanning signal line Gate2.
- Each pixel group unit 70 shares a second scanning signal line Gate2, which is a driving architecture of the second scanning signal line Gate2 driving two.
- the design disclosed in the present invention that is, the overlapping area of the orthographic projection of the conductive connection pattern M1 in the odd-numbered circuit group O1 on the substrate 101 and the orthographic projection of the conductive pattern Q on the substrate 101 is smaller than the overlapping area of the orthographic projection of the conductive connection pattern M1 in the even-numbered circuit group E1 on the substrate 101 and the orthographic projection of the conductive pattern Q on the substrate 101, can solve the problem of brightness difference between the light-emitting devices L driven by the odd-numbered circuit group O1 and the even-numbered circuit group E1.
- an example structure of the pixel driving circuit 10 and an example structure of the layout design of the array substrate 1 are first introduced below. It can be understood that the following content is only an example of the structure of the pixel driving circuit 10 and the layout design structure of the array substrate 1, and is not a limitation on the structure of the pixel driving circuit 10 and the layout design structure of the array substrate 1.
- the pixel driving circuit 10 in the present disclosure may be a circuit including 7T1C, 8T1C or 9T1C, wherein T represents a transistor, and the number before T represents the number of transistors, and C represents a capacitor, and the number before C represents the number of capacitors.
- 7T1C means 7 transistors and 1 capacitor.
- a structure of a pixel driving circuit 10 based on that shown in FIG. 5 is introduced, and the pixel driving circuit 10 includes: a first reset transistor T1, a compensation transistor T2, a driving transistor T3, a data writing transistor T4, a first light emitting control transistor T5, a second light emitting control transistor T6, and a second reset transistor T7.
- the first reset transistor T1 includes: a gate g1, a first electrode s1, and a second electrode d1.
- the gate g1 of the first reset transistor T1 is electrically connected to the reset signal line terminal
- the first electrode s1 of the first reset transistor T1 is electrically connected to the first initial signal terminal
- the second electrode d1 of the first reset transistor T1 is electrically connected to the first node N1.
- the reset signal terminal is used to receive a reset signal transmitted by the reset signal line Reset.
- the first initial signal terminal is used to receive an initial signal transmitted by the first initial signal line Vinit1.
- the first reset transistor T1 is configured to: in response to the reset signal received at the reset signal line Reset, transmit the initial signal received at the first initial signal line Vinit1 to the first node N1, and reset the gate g3 of the driving transistor T3.
- the first pole of the transistor disclosed in the present invention is one of the source and drain of the transistor, and the second pole is the other of the source and drain of the transistor. Since the source and drain of the transistor can be symmetrical in structure, the source and drain thereof can be structurally indistinguishable, that is, the first pole and the second pole of the transistor in the embodiment of the present invention can be structurally indistinguishable.
- the transistor is a P-type transistor
- the first pole of the transistor is the source
- the second pole is the drain
- the first pole of the transistor is the drain
- the second pole is the source.
- the compensation transistor T2 includes: a gate g2, a first electrode s2, and a second electrode d2, the gate g2 of the compensation transistor T2 is electrically connected to the second scanning signal terminal, the first electrode s2 of the compensation transistor T2 is electrically connected to the first node N1, and the second electrode d2 of the compensation transistor T2 is electrically connected to the third node N3.
- the second scanning signal terminal is used to receive a scanning signal transmitted by the second scanning signal line Gate2.
- the compensation transistor T2 is configured to perform threshold compensation on the driving transistor T3 in response to the scanning signal received at the second scanning signal line Gate2.
- the driving transistor T3 includes: a gate g3, a first electrode s3, and a second electrode d3, the gate g3 of the driving transistor T3 is electrically connected to the first node N1, the first electrode s3 of the driving transistor T3 is electrically connected to the second node N2, and the second electrode d3 of the driving transistor T3 is electrically connected to the third node N3.
- the driving transistor T3 is configured to generate a driving current signal.
- the data writing transistor T4 includes: a gate g4, a first electrode s4 and a second electrode d4, the gate g4 of the data writing transistor T4 is electrically connected to the first scanning signal terminal, the first electrode s4 of the data writing transistor T4 is electrically connected to the data signal terminal, and the second electrode d4 of the data writing transistor T4 is electrically connected to the data signal terminal.
- the electrode d4 is electrically connected to the second node N2.
- the data signal terminal is used to receive a data signal transmitted by the data signal line Vdata.
- the data writing transistor T4 is configured to transmit the data signal received at the data signal line Vdata to the driving transistor T3 in response to the scanning signal received at the first scanning signal line Gate1.
- the first light emission control transistor T5 includes: a gate g5, a first electrode g5, and a second electrode d5.
- the gate g5 of the first light emission control transistor T5 is electrically connected to the light emission control signal terminal
- the first electrode g5 of the first light emission control transistor T5 is electrically connected to the power signal terminal
- the second electrode d5 of the first light emission control transistor T5 is electrically connected to the second node N2.
- the light emission control signal terminal is used to receive the light emission control signal transmitted by the light emission control signal line EM.
- the power signal terminal is used to receive the power signal transmitted by the power signal line ELVDD.
- the first light emission control transistor T5 is configured to: in response to the light emission control signal received at the light emission control signal line EM, transmit the power signal received at the power signal line ELVDD to the driving transistor T3.
- the second light emitting control transistor T6 includes: a gate g6, a first electrode s6 and a second electrode d6, the gate g6 of the second light emitting control transistor T6 is electrically connected to the light emitting control signal terminal, the first electrode s6 of the second light emitting control transistor T6 is electrically connected to the third node N3, and the second electrode d6 of the second light emitting control transistor T6 is electrically connected to the fourth node N4.
- the second light emitting control transistor T6 is configured to: in response to the light emitting control signal received at the light emitting control signal line EM, transmit the driving current signal to the light emitting device L, so as to drive the light emitting device L to emit light.
- the second reset transistor T7 includes: a gate g7, a first electrode s7 and a second electrode d7, the gate g7 of the second reset transistor T7 is electrically connected to the first scan signal terminal, the first electrode s7 of the second reset transistor T7 is electrically connected to the second initial signal terminal, and the second electrode d7 of the second reset transistor T7 is electrically connected to the fourth node N4.
- the second reset transistor T7 is configured to: in response to the scan signal received at the first scan signal line Gate1, transmit the initial signal received at the second initial signal line Vinit2 to the light emitting device L to reset the light emitting device L.
- an anode of the light emitting device L is electrically connected to the fourth node N4, and a cathode of the light emitting device L is electrically connected to the reference voltage line ELVSS.
- the pixel driving circuit 10 further includes: a capacitor Cst, the capacitor Cst includes: a first plate Cst1 and a second plate Cst2, the first plate Cst1 of the capacitor Cst is electrically connected to the first node N1, and the second plate Cst2 of the capacitor Cst is electrically connected to the power signal terminal.
- the first reset transistor T1 and the compensation transistor T2 can be oxide thin film transistors, i.e., LTPO (Low Temperature Polycrystalline Oxide) transistors, which are turned on at a high level.
- the driving transistor T3, the data writing transistor T4, the first light emission control transistor T5, the second light emission control transistor T6, and the second reset transistor T7 are all low temperature polycrystalline silicon thin film transistors.
- the P-type transistor of the body tube (Low Temperature Poly-silicon Thin Film Transistor) is turned on at a low level.
- the driving timing diagram of the above-mentioned pixel driving circuit 10 can be found in FIG3 , which will not be described in detail here.
- the above examples of the first reset transistor T1 , the compensation transistor T2 , the driving transistor T3 , the data writing transistor T4 , the first light emission control transistor T5 , the second light emission control transistor T6 and the second reset transistor T7 are not limitations on the transistor types.
- a structure of a pixel driving circuit 10 based on that shown in FIG. 7 is introduced, and the pixel driving circuit 10 includes: a first reset transistor T1, a compensation transistor T2, a driving transistor T3, a data writing transistor T4, a first light emitting control transistor T5, a second light emitting control transistor T6, a second reset transistor T7, a third reset transistor T8 and a capacitor Cst.
- the compensation transistor T2 can be an N-type transistor
- the first reset transistor T1, the driving transistor T3, the data writing transistor T4, the first light emission control transistor T5, the second light emission control transistor T6, the second reset transistor T7 and the third reset transistor T8 can be P-type transistors.
- the first electrode s2 of the compensation transistor T2 is connected to the gate g3 of the driving transistor T3, the second electrode d2 is connected to the second electrode d3 of the driving transistor T3, and the gate g2 is connected to the second scanning signal terminal;
- the first electrode s1 of the first reset transistor T1 is connected to the first initial signal terminal, the second electrode d1 is connected to the second electrode d2 of the compensation transistor T2, and the gate g1 is connected to the first reset signal terminal;
- the first electrode s4 of the data writing transistor T4 is connected to the data signal terminal, the second electrode d4 is connected to the first electrode s3 of the driving transistor T3, and the gate g4 is connected to the first scanning signal terminal;
- the first electrode s5 of the first light-emitting control transistor T5 is connected to the power supply signal terminal, and the second electrode d5 is connected to the first
- the first electrode s3 of the second light-emitting control transistor T6 is connected to the second electrode d3 of the first
- the second scan signal terminal is used to receive the second scan signal transmitted by the second scan signal line Gate2
- the first initial signal terminal is used to receive the first initial signal transmitted by the first initial signal line Vinit1
- the first reset signal terminal is used to receive the first reset signal transmitted by the first reset signal line Reset1
- the data signal terminal is used to receive the data signal transmitted by the data signal line Vdata
- the first scan signal terminal is used to receive the first scan signal transmitted by the first scan signal line Gate1
- the power signal terminal is used to receive the power signal transmitted by the power signal line ELVDD
- the light control signal terminal is used to receive the light control signal transmitted by the light control signal line EM.
- the second initial signal end is used to receive the second initial signal transmitted by the second initial signal line Vinit2
- the second reset signal end is used to receive the second reset signal transmitted by the second reset signal line Reset2
- the third initial signal end is used to receive the third initial signal transmitted by the third initial signal line Vinit3.
- the timing diagram of the pixel driving circuit 10 shown in Figure 7 is shown in Figure 8, where EM represents the timing diagram of the light-emitting control signal transmitted by the light-emitting control signal line EM; Gate1 represents the timing diagram of the first scanning signal transmitted by the first scanning signal line Gate1; Gate2 represents the timing diagram of the second scanning signal transmitted by the second scanning signal line Gate2; Reset1 represents the timing diagram of the first reset signal transmitted by the first reset signal line Reset1; Reset2 represents the timing diagram of the second reset signal transmitted by the second reset signal line Reset2.
- the driving method of the pixel driving circuit 10 in the present disclosure may include a scanning frame Ft.
- the scanning frame Ft may include: a first reset stage t1, a second reset stage t2, a third reset stage t3, a data writing stage t4, and a light emitting stage t5.
- the first reset stage t1 the second scanning signal terminal outputs a high level signal
- the second reset signal line Reset2 outputs a low level signal
- the compensation transistor T2 the second reset transistor T7 and the third reset transistor T8 are turned on, the second initial signal terminal inputs the second initial signal to the first electrode s3 of the light emitting device L
- the third initial signal terminal inputs the third initial signal to the first electrode s3 of the driving transistor T3.
- the driving transistor T3 can be turned on, and the third initial signal terminal writes a reset signal to the gate g3 of the driving transistor T3; in the second reset stage t2: the second scanning signal terminal outputs a high level signal, the first reset signal terminal outputs a low level signal, the first reset transistor T1 and the compensation transistor T2 are turned on, and the first initial signal terminal inputs the first initial signal to the gate g3 of the driving transistor T3.
- the second scanning signal terminal outputs a high level signal, the first reset signal terminal outputs a low level signal, the first reset transistor T1 and the compensation transistor T2 are turned on, and the first initial signal terminal inputs the first initial signal to the gate g3 of the driving transistor T3;
- the data writing stage t4 the first scanning signal terminal outputs a low level signal, the second scanning signal terminal outputs a high level signal, the compensation transistor T2 and the data writing transistor T4 are turned on, and the data signal terminal outputs a data signal to write a compensation voltage to the gate g3 of the driving transistor T3;
- the light emitting stage t5 the light emitting control signal terminal outputs a low level signal, the first light emitting control transistor T5 and the second light emitting control transistor T6 are turned on, and the driving transistor T3 drives the light emitting device L to emit light under the voltage of its gate g3.
- the gate g3 of the driving transistor T3 is connected to the first initial signal terminal through the compensation transistor T2 and the first reset transistor T1, so that the leakage current of the driving transistor T3 to the first initial signal terminal during the light-emitting stage can be reduced.
- the third initial signal terminal inputs a reset signal to the gate g3 of the driving transistor T3 and inputs a third initial signal to the first electrode g3 of the driving transistor T3. This setting can restore the hysteresis of the driving transistor T3 caused by the bias voltage of the previous frame. And solve problems such as dim brightness of the first frame.
- the pixel driving circuit 10 may also have other driving methods, and the present disclosure does not limit the driving method of the pixel driving circuit 10 .
- the display panel 100 includes: an array substrate 1 and a light emitting device L, and a pixel driving circuit 10 on the array substrate 1 is used to drive the light emitting device L to emit light.
- the array substrate 1 includes: a first semiconductor layer 13, a first gate conductive layer 15, a second gate conductive layer 17, a second semiconductor layer 61, a third gate conductive layer 62, a first source-drain metal layer 19, and a second source-drain metal layer 21, which are sequentially stacked on a substrate 101.
- an insulating layer is also provided between the functional film layers of the array substrate 1.
- the functional film layers include: a first semiconductor layer 13, a first gate conductive layer 15, a second gate conductive layer 17, a second semiconductor layer 61, a third gate conductive layer 62, a first source-drain metal layer 19, and a second source-drain metal layer 21.
- the insulating layer between the functional film layers is not shown.
- the insulating layer includes: a first gate insulating layer 103 , a second gate insulating layer 104 , a first inorganic insulating layer 105 , a third gate insulating layer 106 , a second inorganic insulating layer 107 , a passivation layer 108 , a first planarization layer 109 and a second planarization layer 110 .
- the pixel driving circuit 10 includes a first semiconductor layer 13, a first gate insulating layer 103, a first gate conductive layer 15, a second gate insulating layer 104, a second gate conductive layer 17, a first inorganic insulating layer 105, a second semiconductor layer 61, a third gate insulating layer 106, a third gate conductive layer 62, a second inorganic insulating layer 107, a first source-drain metal layer 19, a passivation layer 108, a first planarization layer 109, a second source-drain metal layer 21 and a second planarization layer 110 which are stacked in sequence.
- the material of the first planarization layer 109 and the second planarization layer 110 includes polyimide
- the material of the first inorganic insulating layer 105 and the second inorganic insulating layer 107 includes any one of silicon nitride and silicon oxide.
- the following is an introduction to the conductive connection pattern M1 and the conductive pattern Q of the present disclosure.
- the following embodiments can be understood based on the introduction to the film layer design of the pixel driving circuit 10 and the array substrate 1 in the above example.
- the array substrate 1 further includes: a first semiconductor layer 13 disposed on the base 101 , and the conductive connection pattern M1 is located in the first semiconductor layer 13 .
- the material of the first semiconductor layer 13 includes P-Si (polycrystalline silicon).
- the conductive connection pattern M1 is located in the first semiconductor layer 13, and the parasitic capacitance of the second node N2 includes a parasitic capacitance between the conductive connection pattern M1 located in the first semiconductor layer 13 and the first gate conductive layer 15, a parasitic capacitance between the conductive connection pattern M1 and the second gate conductive layer 17, or a parasitic capacitance between the conductive connection pattern M1 and the first source and drain metal layer 19, etc.
- the array substrate 1 further includes: a shielding layer 11 disposed on the substrate 101 , and a first semiconductor layer 13 disposed on a side of the shielding layer 11 away from the substrate 101 , and the conductive pattern Q is located on the shielding layer 11 .
- the overlapping area of the orthographic projection of the conductive connection pattern M1 in the odd-numbered circuit group O1 on the substrate 101 and the orthographic projection of the shielding layer 11 on the substrate 101 is smaller than the overlapping area of the orthographic projection of the conductive connection pattern M1 in the even-numbered circuit group E1 on the substrate 101 and the orthographic projection of the shielding layer 11 on the substrate 101.
- the conductive connection pattern M1 in the odd-numbered circuit group O1 can be designed in the same shape as the conductive connection pattern M1 in the even-numbered circuit group E1, and the area is equal.
- the area of the second conductive pattern Q2 is larger than the area of the first conductive pattern Q1, so that the overlapping area of the orthographic projection of the first conductive pattern Q1 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101 is smaller than the overlapping area of the orthographic projection of the second conductive pattern Q2 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101.
- the parasitic capacitance of the pixel driving circuit 10 of the even-numbered circuit group E1 at the second node N2 is greater than the parasitic capacitance of the pixel driving circuit 10 of the odd-numbered circuit group O1 at the second node N2.
- the overlapping area of the orthographic projection of the first conductive pattern Q1 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101 can be smaller than the overlapping area of the orthographic projection of the second conductive pattern Q2 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101.
- the entire layout design of the array substrate 1 such that the overlapping area of the orthographic projections of all the first conductive patterns Q1 on the substrate 101 and the orthographic projections of the conductive connection pattern M1 on the substrate 101 is smaller than the overlapping area of the orthographic projections of all the second conductive patterns Q2 on the substrate 101 and the orthographic projections of the conductive connection pattern M1 on the substrate 101.
- the parasitic capacitance Ce of the pixel driving circuit 10 of the even-numbered circuit group E1 at the second node N2 is greater than the parasitic capacitance Co of the pixel driving circuit 10 of the odd-numbered circuit group O1 at the second node N2, which is not limited here.
- the shielding layer 11 may be connected to a fixed potential to shield the influence of surrounding stray charges on the driving transistor T3.
- the array substrate 1 further includes a first gate conductive layer 15 disposed on a side of the first semiconductor layer 13 away from the substrate 101 , and a second gate conductive layer 17 disposed on a side of the first gate conductive layer 15 away from the substrate 101 .
- the pixel driving circuit 10 further includes: a capacitor Cst and a compensation transistor T2, the capacitor Cst includes: a first electrode plate Cst1 and a second electrode plate Cst2, the first electrode plate Cst1 is located in the first gate conductive layer 15, and the second electrode plate Cst2 is located in the second gate conductive layer 17.
- the first electrode plate Cst1 is electrically connected to the first electrode region S2 of the compensation transistor T2, and the second electrode plate Cst2 is electrically connected to the power signal line ELVDD.
- first electrode plate Cst1 is connected to the first electrode region S2 of the compensation transistor T2 through a via
- the second electrode plate Cst2 is connected to the power signal line ELVDD through a via
- the first electrode region S5 of the first light-emitting control transistor T5 is connected to the power signal line ELVDD through a via.
- the connection pattern between the first electrode plate Cst1 and the first electrode region S2 of the compensation transistor T2, and the connection pattern between the second electrode plate Cst2 and the power signal line ELVDD are not shown.
- the conductive pattern Q includes a first portion Qa located at the shielding layer 11 and a second portion Qb electrically connected to the second electrode plate Cst2 .
- a shielding layer 11, a first semiconductor layer 13, and a second gate conductive layer 17 are sequentially disposed on one side of the substrate 101, and F represents the incident direction of the projection line, which may be perpendicular to the plane of the substrate 101.
- F represents the incident direction of the projection line, which may be perpendicular to the plane of the substrate 101.
- the overlapping area of the second electrode plate Cst2 and the conductive connection pattern M1 is equal to the overlapping area of the orthographic projection of the second electrode plate Cst2 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101.
- the overlapping area of the orthographic projection of the conductive pattern Q and the conductive connection pattern M1 on the substrate 101 includes two parts: the overlapping area of the second part Qb of the second electrode plate Cst2 and the conductive connection pattern M1 in the projection line direction, and the overlapping area of the first part Qa of the shielding layer 11 and the conductive connection pattern M1 in the projection line direction. Therefore, in this embodiment, the conductive connection pattern M1 is located between the second electrode plate Cst2 and the shielding layer 11, and an interlayer parasitic capacitor is formed on the conductive connection pattern M1.
- the size of the interlayer parasitic capacitor is proportional to the sum of the overlapping area of the second part Qb of the second electrode plate Cst2 and the conductive connection pattern M1 in the projection line direction, and the overlapping area of the first part Qa of the shielding layer 11 and the conductive connection pattern M1 in the projection line direction.
- the sum of the overlapping areas of the second portion Qb of the second electrode plate Cst2 in the odd-numbered circuit group O1 and the conductive connection pattern M1 in the projection line direction, and the overlapping areas of the first portion Qa of the shielding layer 11 and the conductive connection pattern M1 in the projection line direction, is smaller than the sum of the overlapping areas of the second portion Qb of the second electrode plate Cst2 in the even-numbered circuit group E1 and the conductive connection pattern M1 in the projection line direction.
- the overlapping area and the sum of the overlapping areas of the first part Qa of the shielding layer 11 and the conductive connection pattern M1 in the projection line direction can achieve the purpose of designing the parasitic capacitance Ce of the second node N2 of the even-numbered circuit group E1 to be larger, and solve the problem of brightness difference between the light-emitting devices L driven by the odd-numbered circuit group O1 and the even-numbered circuit group E1.
- the array substrate 1 includes a first gate conductive layer 15 disposed on a side of the first semiconductor layer 13 away from the substrate 101, and a second gate conductive layer 17 disposed on a side of the first gate conductive layer 15 away from the substrate 101.
- the conductive pattern Q is located in the second gate conductive layer 17.
- the pixel driving circuit 10 further includes a capacitor Cst, the capacitor Cst includes a first plate Cst1 and a second plate Cst2, the first plate Cst1 is located in the first gate conductive layer 15, and the second plate Cst2 is located in the second gate conductive layer 17.
- the conductive pattern Q located in the second gate conductive layer 17 is electrically connected to the second plate Cst2, which can also be understood as the conductive pattern Q being located on the second plate Cst2.
- the second electrode plate Cst2 in the odd-numbered circuit group O1 is provided with a first conductive pattern Q1
- the second electrode plate Cst2 in the even-numbered circuit group E1 is provided with a second conductive pattern Q2.
- the overlapping area of the orthographic projection of the first conductive pattern Q1 in the odd-numbered circuit group O1 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101 is smaller than the overlapping area of the orthographic projection of the second conductive pattern Q2 in the even-numbered circuit group E1 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101.
- the purpose of achieving that the parasitic capacitance Ce generated by the even-numbered circuit group E1 at the second node N2 is greater than the parasitic capacitance Ce generated by the odd-numbered circuit group O1 at the second node N2 can solve the problem of brightness difference between the light-emitting devices L driven by the odd-numbered circuit group O1 and the even-numbered circuit group E1.
- the orthographic projection area of the conductive pattern Q in the odd-numbered circuit group O1 on the substrate 101 is equal to the orthographic projection area of the conductive pattern Q in the even-numbered circuit group E1 on the substrate.
- the conductive pattern Q is located on the second electrode plate Cst2, and the design area of the second electrode plate Cst2 in the odd-numbered circuit group O1 and the even-numbered circuit group E1 is consistent. It can also be said that in the layout design, the second electrode plates Cst2 in the odd-numbered circuit group O1 and the even-numbered circuit group E1 can have the same shape and equal area.
- the conductive connection pattern M1 is connected to the first extended pattern U1 located in the first semiconductor layer 13 , and the orthographic projection of the conductive pattern Q on the substrate 101 covers the orthographic projection of the first extended pattern U1 on the substrate 101 .
- the first extended pattern U1 is connected to the conductive connection pattern M1 and both are located in the first semiconductor layer 13, and the first extended pattern U1 and the conductive connection pattern M1 can be designed as an integral unit.
- the design area of the conductive connection pattern M1 in the even-numbered circuit group E1 is greater than the design area of the conductive connection pattern M1 in the odd-numbered circuit group O1.
- the orthographic projection of the second conductive pattern Q2 on the substrate 101 covers the orthographic projection of the first extended pattern U1 on the substrate 101. Therefore, in the even-numbered circuit group E1, the parasitic capacitance Ce of the second node N2 is related to the orthographic projection of the second conductive pattern Q2 on the substrate 101, the overlapping area of the conductive connection pattern M1 and the orthographic projection of the first extended pattern U1 on the substrate 101.
- the overlapping area is larger than the overlapping area of the orthographic projection of the first conductive pattern Q1 on the substrate 101 and the orthographic projection of the conductive connection pattern M1 on the substrate 101 in the odd-numbered circuit group O1.
- the design that the parasitic capacitance Ce of the second node N2 in the even-numbered circuit group E1 is larger than the parasitic capacitance Co of the second node N2 in the odd-numbered circuit group O1 can solve the problem of brightness difference between the light-emitting devices L driven by the odd-numbered circuit group O1 and the even-numbered circuit group E1.
- the orthographic projection of the shielding layer 11 on the substrate 101 overlaps with the orthographic projection of the conductive connection pattern M1 on the substrate 101, and the overlapping area is the same. Therefore, in the even-row circuit group E1 and the odd-row circuit group O1, due to the existence of the shielding layer 11, the second node N2 generates equal parasitic capacitance, and therefore, does not affect the differentiated design of the parasitic capacitance of the even-row circuit group E1 and the odd-row circuit group O1 at the second node N2.
- the conductive pattern Q is a definition of a pattern for differentially designing the parasitic capacitance of the second node N2 by comparing the even-numbered circuit group E1 with the odd-numbered circuit group O1.
- the array substrate 1 further includes a second gate conductive layer 17 disposed on a side of the first semiconductor layer 13 away from the substrate 101.
- the array substrate 1 further includes a second scan signal line Gate2, and the second scan signal line Gate2 is located in the second gate conductive layer 17.
- the conductive pattern Q and the second scan signal line Gate2 are an integrated structure.
- the design shape and area of the conductive connection pattern M1 are the same.
- the orthographic projection of the second scanning signal line Gate2 on the substrate 101 overlaps with the orthographic projection of the conductive connection pattern M1 on the substrate 101.
- the area of the first conductive pattern Q1 located at the second scanning signal line Gate2 in the odd-row circuit group O1 is smaller than the area of the second conductive pattern Q2 of the second scanning signal line Gate2 in the even-row circuit group E1.
- the parasitic capacitance Ce of the second node N2 in the even-row circuit group E1 is greater than the parasitic capacitance Co of the second node N2 in the odd-row circuit group O1, which can solve the problem of brightness difference between the light-emitting devices L driven by the odd-row circuit group O1 and the even-row circuit group E1.
- the orthographic projection of the shielding layer 11 on the substrate 101 overlaps with the orthographic projection of the conductive connection pattern M1 on the substrate 101, and the overlapping area is the same.
- the orthographic projection of the second electrode plate Cst2 located on the second gate conductive layer 17 on the substrate 101 overlaps with the orthographic projection of the conductive connection pattern M1 on the substrate 101, and the overlapping area is the same.
- the stacking area is the same.
- the existence of the shielding layer 11 makes the second node N2 generate equal parasitic capacitance
- the existence of the second electrode plate Cst2 makes the second node N2 generate equal parasitic capacitance, which does not affect the differentiated design of the parasitic capacitance of the even-row circuit group E1 and the odd-row circuit group O1 at the second node N2. Therefore, in the even-row circuit group E1 and the odd-row circuit group O1, the orthographic projection of the shielding layer 11 and the second electrode plate Cst2 on the substrate 101 overlaps with the orthographic projection of the conductive connection pattern M1 on the substrate 101, and is not called the above-mentioned conductive pattern Q.
- the array substrate 1 further includes: a second gate conductive layer 17 disposed on a side of the first semiconductor layer 13 away from the substrate 101, and a first source-drain metal layer 19 disposed on a side of the second gate conductive layer 17 away from the substrate 101, and the first source-drain metal layer 19 includes a second extended pattern U2.
- the conductive pattern Q is located in the second gate conductive layer 17, and in the even-numbered row circuit group E1, the second extended pattern U2 is connected to the conductive connection pattern M1 through the via H1.
- the second extended pattern U2 located in the first source-drain metal layer 19 is connected to the conductive connection pattern M1 located in the first semiconductor layer 13 through a via H1, which is equivalent to increasing the area of the conductive connection pattern M1.
- the second extended pattern U2 and the conductive connection pattern M1 have the same function, that is, they can form a parasitic capacitance with the conductive pattern Q.
- the second conductive pattern Q2 is located at the second electrode plate Cst2, and the second electrode plate Cst2 is located at the second gate conductive layer 17.
- the second extended pattern U2 is connected to the conductive connection pattern M1
- the second electrode plate Cst2 is located between the second extended pattern U2 and the conductive connection pattern M1
- a parasitic capacitor is formed between the conductive connection pattern M1 and the second conductive pattern Q2
- a parasitic capacitor is also formed between the second extended pattern U2 and the second conductive pattern Q2, thereby achieving the purpose of increasing the parasitic capacitance Ce of the second node N2 in the even-numbered circuit group E1.
- the overlapping area between the orthographic projection of the second extended pattern U2 in the odd-row circuit group O1 on the substrate 101 and the orthographic projection of the second electrode plate Cst2 on the substrate 101 can be set to be smaller than the overlapping area between the orthographic projection of the second extended pattern U2 in the even-row circuit group E1 on the substrate 101 and the orthographic projection of the second electrode plate Cst2 on the substrate 101, so as to realize the differentiated design of the parasitic capacitance of the second node N2 of the even-row circuit group E1 and the odd-row circuit group O1.
- the second extension pattern U2 may not be provided in the odd-row circuit group O1.
- the difference in parasitic capacitance of the second node N2 between the even-row circuit group E1 and the odd-row circuit group O1 is caused by providing the second extension pattern U2 in the even-row circuit group E1.
- the array substrate 1 further includes: a first source-drain metal layer 19 disposed on a side of the first semiconductor layer 13 away from the substrate 101, the first source-drain metal layer 19 including a third The extended pattern U3, the third extended pattern U3 and the conductive connection pattern M1 are connected through the via H1.
- the third extended pattern U3 is provided in both the even-numbered circuit group E1 and the odd-numbered circuit group O1, and the third extended pattern U3 in the even-numbered circuit group E1 and the odd-numbered circuit group O1 has the same shape and the same area.
- the third extended pattern U3 is connected to the conductive connection pattern M1 through the via H1, which increases the area of the conductive connection pattern M1.
- the third extended pattern U3 and the conductive connection pattern M1 have the same function, that is, they can form a parasitic capacitor with the conductive pattern Q.
- the array substrate 1 further includes: a second source-drain metal layer 21 disposed on a side of the first source-drain metal layer 19 away from the substrate 101, and the second source-drain metal layer 21 includes a power signal line ELVDD.
- the conductive pattern Q and the power signal line ELVDD are an integral structure.
- the overlapping area of the orthographic projection of the third extended pattern U3 in the odd-numbered circuit group O1 on the substrate 101 and the orthographic projection of the conductive pattern Q on the substrate 101 is smaller than the overlapping area of the orthographic projection of the third extended pattern U3 in the even-numbered circuit group E1 on the substrate 101 and the orthographic projection of the conductive pattern Q on the substrate 101.
- the second conductive pattern Q2 and the power signal line ELVDD are an integrated structure, and the orthographic projection of the second conductive pattern Q2 on the substrate 101 overlaps with the orthographic projection of the third extended pattern U3 on the substrate 101, so a parasitic capacitor is formed between the second conductive pattern Q2 and the third extended pattern U3, thereby achieving the purpose of increasing the parasitic capacitance Ce of the second node N2 in the even-numbered circuit group E1.
- a second gate conductive layer 17 is provided between the third extended pattern U3 and the first semiconductor layer 13, and the orthographic projection of the pattern connected to the second electrode plate Cst2 located in the second gate conductive layer 17 on the substrate 101 overlaps with the orthographic projection of the third extended pattern U3 and the first semiconductor layer 13 on the substrate 101. Therefore, parasitic capacitance is formed between the first semiconductor layer 13 and the second electrode plate Cst2, between the second electrode plate Cst2 and the third extended pattern U3, and between the third extended pattern U3 and the second conductive pattern Q2, that is, a multi-layer capacitance is formed.
- the orthographic projection of the power signal line ELVDD on the substrate 101 does not overlap with the orthographic projection of the third extended pattern U3 on the substrate 101 .
- the power signal line ELVDD in the even-numbered circuit group E1 has an orthographic projection on the substrate 101 that overlaps with the orthographic projection of the third extended pattern U3 on the substrate 101, and the orthographic projection of the power signal line ELVDD in the odd-numbered circuit group O1 on the substrate 101 does not overlap with the orthographic projection of the third extended pattern U3 on the substrate 101.
- the purpose of increasing the parasitic capacitance Ce of the second node N2 in the even-numbered circuit group E1 is achieved.
- the orthographic projection of the third extended pattern U3 on the substrate 101 is The orthographic projection of the conductive connection pattern M1 on the substrate 101 overlaps.
- the third extended pattern U3 is connected to the conductive connection pattern M1 through the via H1, so that the second electrode Cst2 disposed between the third extended pattern U3 and the conductive connection pattern M1 forms a parasitic capacitor with both the third extended pattern U3 and the conductive connection pattern M1, which is beneficial to increase the parasitic capacitance of the second node N2 in the pixel driving circuit 10.
- the array substrate 1 further includes: a first source-drain metal layer 19 disposed on a side of the first semiconductor layer 13 away from the substrate 101, and a second source-drain metal layer 21 disposed on a side of the first source-drain metal layer 19 away from the substrate 101, wherein the second source-drain metal layer 21 includes a data signal line Vdata and a power signal line ELVDD.
- the conductive pattern Q and the power signal line ELVDD are an integrated structure.
- the overlapping area of the orthographic projections of the first conductive pattern and the conductive connection pattern M1 on the substrate 101 in the odd-numbered circuit group O1 is smaller than the overlapping area of the orthographic projections of the second conductive pattern Q2 and the conductive pattern Q on the substrate 101 in the even-numbered circuit group E1.
- the data signal line Vdata is designed to be avoided so that the orthographic projection of the data signal line Vdata on the substrate 101 does not overlap with the orthographic projection of the conductive connection pattern M1 on the substrate 101.
- the conductive pattern Q is located in a pattern located in a different layer from the conductive connection pattern M1 in the pixel driving circuit 10.
- the conductive pattern Q is electrically connected to the reference voltage line ELVSS
- the conductive pattern Q is electrically connected to the first initial signal line Vinit1
- the conductive pattern Q is electrically connected to the second initial signal line Vinit2
- the conductive pattern Q is electrically connected to other constant voltage lines, etc., which is not limited here.
- the transistor includes: a first reset transistor T1, a compensation transistor T2, a second light emission control transistor T6 and a second reset transistor T7.
- the array substrate 1 also includes: a first initial signal line Vinit1, a second initial signal line Vinit2, a data signal line Vdata and a power signal line ELVDD.
- the first electrode region S1 of the first reset transistor T1 is electrically connected to the first initial signal line Vinit1
- the second electrode region D1 of the first reset transistor T1 is electrically connected to the first electrode region S2 of the compensation transistor T2
- the second electrode region D2 of the compensation transistor T2 is electrically connected to the second electrode region D3 of the driving transistor T3.
- the first electrode region S6 of the second light-emitting control transistor T6 is electrically connected to the second electrode region D3 of the driving transistor T3
- the second electrode region D6 of the second light-emitting control transistor T6 is electrically connected to the second electrode region D7 of the second reset transistor T7
- the first electrode region S7 of the second reset transistor T7 is electrically connected to the second initial signal line Vinit2
- the first electrode region S4 of the data writing transistor T4 is electrically connected to the data signal line Vdata
- the first electrode region S5 of the first light-emitting control transistor T5 is electrically connected to the power signal line ELVDD.
- the array substrate 1 further includes: a gate pattern G1 of a first reset transistor T1, a reset signal line Reset, a gate pattern G7 of a second reset transistor T7, a first scan The signal line Gate1, the gate pattern G5 of the first light emission control transistor T5, the gate pattern G6 of the second light emission control transistor T6 and the light emission control signal line EM.
- the gate pattern G1 of the first reset transistor T1 is electrically connected to the reset signal line Reset
- the gate pattern G7 of the second reset transistor T7 is electrically connected to the first scanning signal line Gate1
- the gate pattern G5 of the first light emission control transistor T5 and the gate pattern G6 of the second light emission control transistor T6 are electrically connected to the light emission control signal line EM.
- the array substrate 1 includes: a first semiconductor layer 13 disposed on one side of the substrate 101, and the conductive connection pattern M1 is located in the first semiconductor layer 13.
- the array substrate 1 includes: a first gate conductive layer 15 disposed on the side of the first semiconductor layer 13 away from the substrate 101, and the first scanning signal line Gate1 and the light-emitting control signal line EM are located in the first gate conductive layer 15.
- the array substrate 1 includes: a second gate conductive layer 17 disposed on the side of the first gate conductive layer 15 away from the substrate 101, and the first initial signal line Vinit1 and the reset signal line Reset are located in the second gate conductive layer 17.
- the array substrate 1 includes: a first source-drain metal layer 19 disposed on the side of the second gate conductive layer 17 away from the substrate 101, and the second initial signal line Vinit2 is located in the first source-drain metal layer 19.
- the array substrate 1 includes: a second source-drain metal layer 21 disposed on the side of the first source-drain metal layer 19 away from the substrate, and the data signal line Vdata and the power signal line ELVDD are located in the second source-drain metal layer 21.
- the compensation transistor T2 and the first reset transistor T1 include oxide thin film transistors.
- the compensation transistor T2 and the first reset transistor T1 include N-type oxide thin film transistors.
- the array substrate 1 further includes: a second semiconductor layer 61 and a third gate conductive layer 62 disposed between the second gate conductive layer 17 and the first source-drain metal layer 19, and the third gate conductive layer 62 is disposed on a side of the second semiconductor layer 61 away from the substrate 101.
- the material of the second semiconductor layer 61 includes indium gallium zinc oxide, but is not limited thereto.
- the channel portions of the compensation transistor T2 and the first reset transistor T1 are located in the second semiconductor layer 61 , and the gate patterns of the compensation transistor T2 and the first reset transistor T1 are located in the third gate conductive layer 62 .
- the array substrate 1 includes a substrate 101 and a plurality of pixel driving circuits 10 disposed on the substrate 101.
- each of the plurality of pixel driving circuits 10 includes a transistor, and the transistor includes a driving transistor T3, a data writing transistor T4, and a first light emitting control transistor T5.
- the array substrate 1 also includes: a first electrode region and a second electrode region of the transistor, the first electrode region S3 of the driving transistor T3, the second electrode region D4 of the data writing transistor T4 and the second electrode region D5 of the first light-emitting control transistor T5 are connected to form a conductive connection pattern M1, and the conductive connection pattern M1 is a continuous pattern.
- the plurality of pixel driving circuits 10 are configured as an odd-numbered circuit group O1 and an even-numbered circuit group E1, wherein the odd-numbered circuit group O1 and the even-numbered circuit group E1 include a plurality of pixel driving circuits 10 arranged along a first direction X.
- the road groups E1 are arranged alternately.
- the first direction X and the second direction Y intersect.
- the array substrate 1 further includes: a conductive pattern Q, the conductive pattern Q including a pattern in the pixel driving circuit 10 located in a different layer from the conductive connection pattern M1.
- the capacitance Co formed by the conductive connection pattern M1 of at least one pixel driving circuit 10 in the odd-numbered circuit group O1 and the conductive pattern Q is smaller than the capacitance Ce formed by the conductive connection pattern M1 of at least one pixel driving circuit 10 in the even-numbered circuit group E1 and the conductive pattern Q.
- an insulating layer is provided between each functional film layer of the array substrate 1, and by adjusting the difference of the insulating layer, a differentiated design of the capacitance Co formed by the conductive connection pattern M1 and the conductive pattern Q in the odd-numbered circuit group O1 and the capacitance Ce formed by the conductive connection pattern M1 and the conductive pattern Q in the even-numbered circuit group E1 (i.e., the capacitance value) can be achieved.
- the insulating layer between the conductive connection pattern M1 and the conductive pattern Q of at least one pixel driving circuit 10 in the odd-numbered circuit group O1 is made of the same material as the insulating layer between the conductive connection pattern M1 and the conductive pattern Q of at least one pixel driving circuit 10 in the even-numbered circuit group E1.
- the thickness of the insulating layer between the conductive connection pattern M1 and the conductive pattern Q in the odd-numbered circuit group O1 may be set to be greater than the thickness of the insulating layer between the conductive connection pattern M1 and the conductive pattern Q in the even-numbered circuit group E1.
- the capacitance Co formed by the conductive connection pattern M1 and the conductive pattern Q in the odd-numbered circuit group O1 is smaller than the capacitance Ce formed by the conductive connection pattern M1 and the conductive pattern Q in the even-numbered circuit group E1.
- the insulating layer between the conductive connection pattern M1 and the conductive pattern Q of at least one pixel driving circuit 10 in the odd-numbered row circuit group O1 and the insulating layer between the conductive connection pattern M1 and the conductive pattern Q of at least one pixel driving circuit 10 in the even-numbered row circuit group E1 include at least one insulating layer of the same material.
- the design of using at least one insulating layer of the same material can reduce the process steps of forming the film layer of the array substrate 1.
- the array substrate 1 further includes a first gate conductive layer 15 disposed on a side of the first semiconductor layer 13 away from the substrate 101, and a second gate conductive layer 17 disposed on a side of the first gate conductive layer 15 away from the substrate 101.
- the pixel driving circuit 10 further includes a capacitor Cst, the capacitor Cst includes a first plate Cst1 and a second plate Cst2, the first plate Cst1
- the second electrode Cst2 is located in the first gate conductive layer 15 and the second electrode Cst2 is located in the second gate conductive layer 17.
- the capacitance of the capacitor Cst in the odd-numbered circuit group O1 is greater than the capacitance of the capacitor Cst in the even-numbered circuit group E1.
- the storage capacitance of the capacitor Cst of the odd-numbered circuit group O1 is greater than the storage capacitance of the even-numbered circuit group E1, which is beneficial for the data signal in the even-numbered circuit group E1 to be quickly input into the first node N1, and makes up for the problem of insufficient time b for writing the data signal and threshold compensation to the first node N1 in the even-numbered circuit group E1.
- the orthographic projection area of the first electrode plate Cst1 of the capacitor Cst in the odd-numbered circuit group O1 on the substrate 101 is greater than the orthographic projection area of the first electrode plate Cst1 of the capacitor Cst in the even-numbered circuit group E1 on the substrate 101. This achieves the purpose of making the capacitance of the capacitor Cst in the odd-numbered circuit group O1 greater than the capacitance of the capacitor Cst in the even-numbered circuit group E1.
- the pixel driving circuit 10 provided on the array substrate 1 is used to drive the light emitting devices L emitting different colors of light.
- the pixel driving circuit 10 includes: a first pixel driving circuit 10a, a second pixel driving circuit 10b, and a third pixel driving circuit 10c.
- the first pixel driving circuit 10a is used to drive the light emitting device L emitting green light
- the second pixel driving circuit 10b is used to drive the light emitting device L emitting red light
- the third pixel driving circuit 10c is used to drive the light emitting device L emitting blue light.
- the parasitic capacitance Ct of the second node N2 of the odd and even rows of the first pixel driving circuit 10a can be designed differently.
- the capacitance Co of the second node N2 of the first pixel driving circuit 10a in the odd-numbered row circuit group O1 is smaller than the capacitance Ce of the second node N2 of the first pixel driving circuit 10a in the even-numbered row circuit group E1.
- the parasitic capacitance Ct of the second node N2 of the second pixel driving circuit 10b and the third pixel driving circuit 10c is not designed differently.
- the parasitic capacitance Ct of the second node N2 of the second pixel driving circuit 10b and the third pixel driving circuit 10c is equal.
- the parasitic capacitance Ct of the second node N2 of the second pixel driving circuit 10b and the third pixel driving circuit 10c is set differently according to the chromaticity of the light-emitting device L emitting red light and the light-emitting device L emitting blue light.
- the light-emitting device L emitting green light has a higher start-up voltage
- the following two examples are provided to eliminate the problem of uneven display brightness caused by brightness differences.
- the first pixel driving circuit 10a The capacitance of the capacitor Cst is smaller than the capacitance of the capacitor Cst of the second pixel driving circuit 10b and the third pixel driving circuit 10c.
- the positive projection area of the first plate Cst1 of the capacitor Cst of the first pixel driving circuit 10a on the substrate 101 is smaller than the positive projection area of the first plate Cst1 of the capacitor Cst of the second pixel driving circuit 10b on the substrate 101, and smaller than the positive projection area of the first plate Cst1 of the capacitor Cst of the third pixel driving circuit 10c on the substrate 101.
- the capacitance of the parasitic capacitor Ct of the second node N2 of the first pixel driving circuit 10a is greater than the capacitance of the parasitic capacitor Ct of the second node N2 of the second pixel driving circuit 10b, and greater than the capacitance of the parasitic capacitor Ct of the second node N2 of the third pixel driving circuit 10c.
- the overlapping area of the orthographic projection of the conductive pattern Q of the first pixel driving circuit 10a and the conductive connection pattern M1 on the substrate 101 is greater than the overlapping area of the orthographic projection of the conductive pattern Q of the second pixel driving circuit 10b and the conductive connection pattern M1 on the substrate 101, and greater than the overlapping area of the orthographic projection of the conductive pattern Q of the third pixel driving circuit 10c and the conductive connection pattern M1 on the substrate 101.
- Some embodiments of the present disclosure further provide a display device 1000 , as shown in FIG. 24 , the display device 1000 includes an array substrate 1 provided in any of the above embodiments.
- the display device can be any device that displays whether it is moving (e.g., video) or fixed (e.g., still images) and whether it is text or images. More specifically, it is expected that the embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers/navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controls and/or displays, displays of camera views (e.g., displays of rear-view cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.
- PDAs personal data assistants
- GPS receivers/navigators cameras
- MP4 video players camcorders
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Abstract
Description
Claims (19)
- 一种阵列基板,包括:基底以及设置于所述基底上的多个像素驱动电路;所述多个像素驱动电路中的每个像素驱动电路包括:晶体管,所述晶体管包括:驱动晶体管、数据写入晶体管和第一发光控制晶体管;所述阵列基板还包括:所述晶体管的第一极区和第二极区;所述驱动晶体管的第一极区、所述数据写入晶体管的第二极区和所述第一发光控制晶体管的第二极区连接为导电连接图案,且所述导电连接图案为连续的图案;所述多个像素驱动电路被配置为:奇数排电路组和偶数排电路组,所述奇数排电路组和所述偶数排电路组包括沿第一方向排列设置的多个所述像素驱动电路;沿第二方向,所述奇数排电路组和所述偶数排电路组交替设置;所述第一方向和所述第二方向相交叉;所述阵列基板还包括:导电图案,所述导电图案包括所述像素驱动电路中的与所述导电连接图案位于不同层的图案;所述奇数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案在所述基底上的正投影的交叠面积,小于所述偶数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案在所述基底上的正投影的交叠面积。
- 根据权利要求1所述的阵列基板,其中,所述晶体管还包括:补偿晶体管;所述阵列基板还包括:所述补偿晶体管的栅极图案和第二扫描信号线;所述补偿晶体管的栅极图案和所述第二扫描信号线电连接;所述补偿晶体管的第二极区与所述驱动晶体管的第二极区连接;所述多个像素驱动电路还被配置为:沿所述第二方向依次设置的多个像素组单元,所述多个像素组单元中的每个像素组单元包括:所述奇数排电路组和与所述奇数排电路组相邻设置的所述偶数排电路组;每个所述像素组单元共用一条所述第二扫描信号线。
- 根据权利要求1或2所述的阵列基板,其中,还包括:设置于所述基底上的第一半导体层,所述导电连接图案位于所述第一半导体层。
- 根据权利要求1~3任一项所述的阵列基板,其中,还包括:设置于所述基底上的遮挡层,以及设置于所述遮挡层远离所述基底一侧的第一半导体层;所述导电图案位于所述遮挡层。
- 根据权利要求3所述的阵列基板,其中,还包括:设置于所述第一半 导体层远离所述基底一侧的第一栅导电层,以及设置于所述第一栅导电层远离基底一侧的第二栅导电层;所述像素驱动电路还包括:电容器和补偿晶体管,所述电容器包括:第一极板和第二极板,所述第一极板位于所述第一栅导电层,所述第二极板位于所述第二栅导电层;所述第一极板与所述补偿晶体管的第一极区电连接,所述第二极板与电源信号线电连接;所述导电图案包括:位于所述遮挡层的第一部分和与所述第二极板电连接的第二部分。
- 根据权利要求3所述的阵列基板,其中,还包括:设置于所述第一半导体层远离所述基底一侧的第一栅导电层,以及设置于所述第一栅导电层远离基底一侧的第二栅导电层;所述导电图案位于所述第二栅导电层。
- 根据权利要求6所述的阵列基板,其中,所述奇数排电路组中的所述导电图案在所述基底上的正投影的面积,与所述偶数排电路组中的所述导电图案在所述基底上的正投影的面积相等;在所述偶数排电路组中,所述导电连接图案上连接有位于所述第一半导体层的第一扩展图案,所述导电图案在所述基底上的正投影,覆盖所述第一扩展图案在所述基底上的正投影。
- 根据权利要求3所述的阵列基板,其中,所述阵列基板还包括:设置于所述第一半导体层远离所述基底一侧的第二栅导电层;所述阵列基板还包括第二扫描信号线,所述第二扫描信号线位于所述第二栅导电层;所述导电图案与所述第二扫描信号线为一体结构。
- 根据权利要求3所述的阵列基板,其中,还包括:设置于所述第一半导体层远离所述基底一侧的第一源漏金属层,所述第一源漏金属层包括第三扩展图案,所述第三扩展图案与所述导电连接图案通过过孔连接;还包括:设置于所述第一源漏金属层远离所述基底一侧的第二源漏金属层,所述第二源漏金属层包括电源信号线;所述导电图案与所述电源信号线为一体结构;所述奇数排电路组中的所述第三扩展图案在所述基底上的正投影与所述导电图案在所述基底上的正投影的交叠面积,小于所述偶数排电路组中的所述第三扩展图案在所述基底上的正投影与所述导电图案在所述基底上的正投影的交叠面积。
- 根据权利要求9所述的阵列基板,其中,在所述奇数排电路组中, 所述电源信号线在所述基底上的正投影,与所述第三扩展图案在所述基底上的正投影无交叠。
- 根据权利要求9或10所述的阵列基板,其中,所述第三扩展图案在所述基底上的正投影,与所述导电连接图案在所述基底上的正投影有交叠。
- 根据权利要求1~11任一项所述的阵列基板,其中,所述晶体管包括:第一复位晶体管、补偿晶体管、第二发光控制晶体管和第二复位晶体管;所述阵列基板还包括:第一初始信号线、第二初始信号线、数据信号线和电源信号线;所述第一复位晶体管的第一极区与所述第一初始信号线电连接,所述第一复位晶体管的第二极区和所述补偿晶体管的第一极区电连接,所述补偿晶体管的第二极区与所述驱动晶体管的第二极区电连接;所述第二发光控制晶体管的第一极区与所述驱动晶体管的第二极区电连接,所述第二发光控制晶体管的第二极区与所述第二复位晶体管的第二极区电连接,所述第二复位晶体管的第一极区与所述第二初始信号线电连接;所述数据写入晶体管的第一极区与所述数据信号线电连接,所述第一发光控制晶体管的第一极区与所述电源信号线电连接。
- 根据权利要求12所述的阵列基板,其中,还包括:所述第一复位晶体管的栅极图案、复位信号线、所述第二复位晶体管的栅极图案、第一扫描信号线、所述第一发光控制晶体管的栅极图案、所述第二发光控制晶体管的栅极图案和发光控制信号线;所述第一复位晶体管的栅极图案与所述复位信号线电连接,所述第二复位晶体管的栅极图案与所述第一扫描信号线电连接,所述第一发光控制晶体管的栅极图案和所述第二发光控制晶体管的栅极图案与所述发光控制信号线电连接。
- 根据权利要求13所述的阵列基板,其中,还包括:设置于所述基底一侧的第一半导体层;所述导电连接图案位于所述第一半导体层;设置于所述第一半导体层远离所述基底一侧的第一栅导电层;所述第一扫描信号线和所述发光控制信号线位于所述第一栅导电层;设置于所述第一栅导电层远离所述基底一侧的第二栅导电层;所述第一初始信号线和所述复位信号线位于所述第二栅导电层;设置于所述第二栅导电层远离所述基底一侧的第一源漏金属层;所述第 二初始信号位于所述第一源漏金属层;设置于所述第一源漏金属层远离所述基底一侧的第二源漏金属层;所述数据信号线和所述电源信号线位于所述第二源漏金属层。
- 根据权利要求14所述的阵列基板,其中,所述补偿晶体管和所述第一复位晶体管包括氧化物薄膜晶体管;所述阵列基板还包括:设置于所述第二栅导电层和所述第一源漏金属层之间的第二半导体层和第三栅导电层,所述第三栅导电层设置于所述第二半导体层远离所述基底的一侧。
- 一种阵列基板,包括:基底以及设置于所述基底上的多个像素驱动电路;所述多个像素驱动电路中的每个像素驱动电路包括:晶体管,所述晶体管包括:驱动晶体管、数据写入晶体管和第一发光控制晶体管;所述阵列基板还包括:所述晶体管的第一极区和第二极区;所述驱动晶体管的第一极区、所述数据写入晶体管的第二极区和所述第一发光控制晶体管的第二极区连接为导电连接图案,且所述导电连接图案为连续的图案;所述多个像素驱动电路被配置为:奇数排电路组和偶数排电路组,所述奇数排电路组和所述偶数排电路组包括沿第一方向排列设置的多个所述像素驱动电路;沿第二方向,所述奇数排电路组和所述偶数排电路组交替设置;所述第一方向和所述第二方向相交叉;所述阵列基板还包括:导电图案,所述导电图案包括所述像素驱动电路中的与所述导电连接图案位于不同层的图案;所述奇数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案之间形成的电容的容值,小于所述偶数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案之间形成的电容的容值。
- 根据权利要求16所述的阵列基板,其中,所述奇数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案之间的绝缘层,和所述偶数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案之间的绝缘层材质相同。
- 根据权利要求16所述的阵列基板,其中,所述奇数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案之间的绝缘层,和所述偶数排电路组中的至少一个像素驱动电路的所述导电连接图案与所述导电图案之间的绝缘层包括至少一层相同材质的绝缘层。
- 一种显示装置,包括如权利要求1~15中任一项所述的阵列基板,或如权利要求16~18中任一项所述的阵列基板。
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