WO2021226788A1 - 显示面板、掩模板、掩模板组件和制作掩模板组件的方法 - Google Patents
显示面板、掩模板、掩模板组件和制作掩模板组件的方法 Download PDFInfo
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- WO2021226788A1 WO2021226788A1 PCT/CN2020/089601 CN2020089601W WO2021226788A1 WO 2021226788 A1 WO2021226788 A1 WO 2021226788A1 CN 2020089601 W CN2020089601 W CN 2020089601W WO 2021226788 A1 WO2021226788 A1 WO 2021226788A1
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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
- H10K59/80—Constructional details
- H10K59/88—Dummy elements, i.e. elements having non-functional features
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/32—Stacked devices having two or more layers, each emitting at different wavelengths
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/191—Deposition of organic active material characterised by provisions for the orientation or alignment of the layer to be deposited
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
Definitions
- the present disclosure relates to the field of display technology and mask technology, in particular to a display panel, a mask, a mask assembly, and a method for manufacturing a mask assembly.
- OLED organic light emitting diode
- the mask Before using the mask to form the patterned film layer, the mask needs to be meshed and welded on the mask frame to form the mask assembly. Before welding the mask on the mask frame, it is necessary to align the mask with the mask frame to prevent misalignment of the mask. Especially with the emergence of high-resolution OLED display panels, the alignment requirements for the mask plate and the mask plate frame are higher. It is necessary to provide a more efficient alignment scheme between the mask plate and the mask plate frame.
- An embodiment of the present disclosure provides a display panel, including: a base substrate; and a display area and a peripheral area provided on the base substrate, the peripheral area is provided around the display area; wherein the peripheral area is provided with Virtual sub-pixel units, the plurality of virtual sub-pixel units include a first type of virtual sub-pixel unit and a second type of virtual sub-pixel unit, the first type of virtual sub-pixel unit includes a first virtual luminescent material layer And the first virtual auxiliary light-emitting layer, the second type of virtual sub-pixel unit includes a second virtual light-emitting material layer and a second virtual auxiliary light-emitting layer, the second virtual light-emitting material layer and the first virtual light-emitting material layer are composed of the same The second virtual auxiliary light-emitting layer and the first virtual auxiliary light-emitting layer are made of the same material and arranged in the same layer, and the first virtual auxiliary light-emitting layer is located in the first virtual light-emitting material layer.
- the second dummy auxiliary light-emitting layer is located on a side of the second dummy light-emitting material layer facing the base substrate Side and located on the side of the base substrate facing the second dummy luminescent material layer, the orthographic projection of the first dummy luminescent material layer on the base substrate and the first dummy auxiliary light-emitting layer on the base substrate.
- the orthographic projection on the substrate at least partially overlaps, and the orthographic projection of the second virtual luminescent material layer on the base substrate and the orthographic projection of the second virtual auxiliary light-emitting layer on the base substrate at least partially overlap; wherein ,
- the first structural layer in the first dummy luminescent material layer and the first dummy auxiliary luminescent layer is the same layer as the second structural layer in the second dummy luminescent material layer and the second dummy auxiliary luminescent layer Arrangement, at least one of the size and
- the largest dimension of the orthographic projection of the second dummy luminescent material layer on the substrate is larger than that of the first dummy luminescent material layer on the substrate.
- the maximum dimension of the orthographic projection on the substrate is 15% to 30% larger.
- the largest dimension of the orthographic projection of the second virtual auxiliary light-emitting layer on the substrate is larger than that of the first virtual auxiliary light-emitting layer on the substrate.
- the maximum dimension of the orthographic projection on the substrate is 15% to 30% larger, and the second direction is perpendicular to the first direction.
- the plurality of virtual sub-pixel units further include a third type of virtual sub-pixel unit and a fourth type of virtual sub-pixel unit, and the third type of virtual sub-pixel unit includes a third virtual luminescent material
- the fourth type of virtual sub-pixel unit includes a fourth virtual light-emitting material layer, the third virtual light-emitting material layer and the fourth virtual light-emitting material layer are made of the same material, and the third virtual light-emitting material layer and the fourth virtual light-emitting material layer are made of the same material.
- the material of the virtual light-emitting material layer is different from the materials of the first virtual light-emitting material layer and the second virtual light-emitting material layer; wherein, at least one of the size and shape of the orthographic projection of the fourth virtual light-emitting material layer on the base substrate It is different from the orthographic projection of the third virtual luminescent material layer on the base substrate.
- the largest dimension of the orthographic projection of the fourth dummy luminescent material layer on the substrate is larger than that of the third dummy luminescent material layer on the substrate.
- the maximum dimension of the orthographic projection on the substrate is 15% to 30% larger, and the second direction is perpendicular to the first direction.
- the dimension of the orthographic projection of the fourth dummy luminescent material layer on the base substrate in at least one of the first direction and the second direction is the same as that of the second dummy luminescent material layer on the base substrate.
- the orthographic projection is different.
- the third type of virtual sub-pixel unit further includes a third virtual auxiliary light-emitting layer, the third virtual auxiliary light-emitting layer is located on the side of the third virtual light-emitting material layer facing the base substrate and Located on the side of the base substrate facing the third virtual light-emitting material layer, the fourth type of virtual sub-pixel unit further includes a fourth virtual auxiliary light-emitting layer, and the fourth virtual auxiliary light-emitting layer is located on the first
- the four dummy luminescent material layers face one side of the base substrate and are located on the side of the base substrate facing the fourth dummy luminescent material layer, the fourth dummy auxiliary luminescent layer and the third dummy auxiliary luminescent layer are made of the same material Wherein at least one of the size and shape of the orthographic projection of the fourth virtual auxiliary light-emitting layer on the base substrate is different from the orthographic projection of the third virtual auxiliary light-emitting layer on the base substrate.
- the largest dimension of the orthographic projection of the fourth virtual auxiliary light-emitting layer on the substrate is larger than that of the third virtual auxiliary light-emitting layer on the substrate.
- the maximum dimension of the orthographic projection on the substrate is 15% to 30% larger, and the second direction is perpendicular to the first direction.
- the display area includes a plurality of display sub-pixel units, and at least one display sub-pixel unit includes: a first electrode, a display auxiliary light-emitting layer located on a side of the first electrode away from the base substrate , A display light emitting material layer located on the side of the display auxiliary light emitting layer away from the base substrate and a second electrode located on the side of the display light emitting material layer away from the base substrate, wherein the plurality of The display sub-pixel unit includes a display sub-pixel unit of a first color and a display sub-pixel unit of a second color, and the display auxiliary light-emitting layer and the second dummy auxiliary light-emitting layer in the display sub-pixel unit of the first color are made of the same material And arranged in the same layer, the display luminescent material layer and the second dummy luminescent material layer in the display sub-pixel unit of the first color are made of the same material and arranged in the same layer; the display sub-pixels of the second color
- At least one of the second dummy light-emitting material layer, the second dummy auxiliary light-emitting layer, the fourth dummy light-emitting layer, and the fourth dummy auxiliary light-emitting layer is on a base substrate
- the projection of has an axisymmetric shape.
- At least one of the dummy sub-pixel unit of the first type and the dummy sub-pixel unit of the second type further includes: a first electrode, and the first electrode is located at a first direction of the base substrate.
- the embodiment of the present disclosure also provides a mask for evaporation, including: a mask pattern area, the mask pattern area includes one or more sets of evaporation patterns, at least one set of evaporation patterns includes: display A pattern area, in the display pattern area is provided with display pixel openings, the display pixel openings are used to evaporate the film layer in the sub-pixel structure on the display panel; and the peripheral pattern area, the peripheral pattern area is located
- the periphery of the display pattern area is provided with positioning openings in the peripheral pattern area, and the positioning openings are used for positioning the mask plate, and the peripheral pattern area is also provided with virtual pixel openings,
- the virtual pixel opening is used to evaporate the film layer in the virtual sub-pixel structure on the display panel, wherein at least one of the size and shape of the positioning opening is the same as the display pixel opening and the virtual pixel opening different.
- the maximum size of the positioning opening is greater than the maximum size of the display pixel opening and the virtual pixel opening, and the second The two directions are perpendicular to the first direction.
- the maximum size of the positioning opening is 15% to 15% larger than the maximum size of the display pixel opening and the virtual pixel opening. 30%.
- a plurality of positioning openings are provided in the peripheral pattern area, and the plurality of positioning openings are symmetrically distributed with respect to the center of the display pattern area.
- the multiple positioning openings include a first positioning opening, a second positioning opening, a third positioning opening, and a fourth positioning opening.
- the hole, the third positioning opening and the fourth positioning opening are respectively located at the four corners of the mask pattern area of the mask plate.
- the mask plate further includes a fixing area and a thickness transition area between the fixing area and the mask pattern area, and the fixing area is located around the mask pattern area for It is fixedly connected with the mask plate frame, and the thickness of the fixed connection part is greater than the thickness of the mask pattern area.
- Embodiments of the present disclosure also provide a mask assembly, including: one or more masks as described in any of the above embodiments; and a mask frame for supporting and fixing the mask
- the mask plate wherein the mask plate further includes a fixing area, the fixing area is located around the mask pattern area and is fixed together with the mask frame.
- the mask plate assembly includes a plurality of the mask plates, the pattern area of at least one of the mask plates includes a plurality of sets of vapor deposition patterns, and there are spacers between the two adjacent sets of vapor deposition patterns, and The mask plate assembly further includes: at least one support bar for supporting the mask plate, the orthographic projection of the support bar on the mask plate falls into the interval area of the mask plate; and at least one cover bar, The covering strip is located at the boundary of the adjacent mask plates and covers the gap between the adjacent mask plates.
- the embodiment of the present disclosure also provides a method for manufacturing a mask plate assembly, the method includes: preliminarily aligning the mask plate and the mask plate frame by using the positioning openings on the mask plate; After success, the display pixel openings or virtual pixel openings on the mask are used to precisely align the mask and the mask frame; and the precisely aligned mask and the mask assembly are fixed together.
- the preliminary alignment of the mask and the mask frame by using the positioning openings on the mask includes: providing a reference position of the positioning openings on the mask with respect to the mask frame; and capturing the mask on the mask.
- the actual position of the positioning opening relative to the mask frame calculate the error between the reference position and the actual position, and determine whether the mask and the mask frame have been aligned successfully according to the error, if the error is within the first threshold range It is considered that the alignment is successful, otherwise, the actual position of the mask is re-adjusted to re-align.
- the use of display pixel openings or virtual pixel openings on the mask plate to precisely align the mask plate and the mask frame includes: providing predetermined display pixel openings or virtual pixel openings on the mask plate. The reference position of the hole relative to the mask frame;
- FIG. 1A is a schematic diagram of an OLED display panel
- FIG. 1B is an enlarged schematic diagram of the boundary area P between the display area and the peripheral area of the OLED display panel shown in FIG. 1A;
- FIG. 1C is a schematic diagram of a light-emitting element film structure of a sub-pixel unit in the display area of the OLED display panel shown in FIG. 1A;
- FIG. 1D is a schematic diagram of the film structure of the virtual sub-pixel unit of the first color in the peripheral area of the OLED display panel shown in FIG. 1A;
- Fig. 1E is a schematic diagram of a film structure of a second color virtual sub-pixel unit in the peripheral area of the OLED display panel shown in Fig. 1A;
- 1F is a schematic diagram of the film structure of another virtual sub-pixel unit of the first color in the peripheral area of the OLED display panel shown in FIG. 1A;
- Figure 2 is a schematic diagram of a mask assembly according to some embodiments of the present disclosure.
- FIG. 3A is a schematic diagram of a mask according to some embodiments of the present disclosure.
- FIG. 3B is an enlarged schematic diagram of part E in FIG. 3A;
- Figure 4 is a schematic cross-sectional view taken along the line A-A in Figure 3B;
- FIG. 5 schematically shows the alignment operation of the mask plate and the mask plate frame in the formation of the mask plate assembly
- FIG. 6 schematically shows a flowchart for manufacturing a mask assembly according to some embodiments of the present disclosure
- FIG. 7A is a schematic diagram of a mask plate according to other embodiments of the present disclosure.
- FIG. 7B is an enlarged schematic diagram of part F in FIG. 7A;
- Fig. 8 shows a schematic diagram of evaporating a film layer on a substrate to be evaporated using a mask plate assembly
- FIG. 9A is a schematic diagram of a mask plate according to other embodiments of the present disclosure.
- FIG. 9B is a schematic diagram of a mask assembly according to other embodiments of the present disclosure.
- first, second, etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element.
- first element may be named as the second element, and similarly, the second element may be named as the first element.
- second element may be named as the first element.
- the term "and/or" as used herein includes any and all combinations of one or more of the related listed items.
- the expressions “located on the same layer” and “disposed on the same layer” generally mean that the first component and the second component can use the same material and can be formed by the same patterning process.
- the expressions “located on different layers” and “different layer settings” generally mean that the first part and the second part are formed by different patterning processes.
- FIG. 1A schematically shows an OLED display panel 1000 which includes a display area 1 and a peripheral area 2 surrounding the display area 1.
- the peripheral area 2 may be arranged around the display area 1, for example.
- a plurality of sub-pixel units are provided in the display area 1, and each sub-pixel unit includes a light-emitting structure and a pixel driving circuit.
- the light-emitting structure includes, for example, a cathode, an anode, and a light-emitting functional layer located between the cathode and the anode.
- the light-emitting functional layer may include, for example, an organic light-emitting layer, a hole transport layer (between the organic light-emitting layer and the anode), and an electron transport layer (between the organic light-emitting layer and the cathode).
- the pixel driving circuit may include, for example, electronic devices such as thin film transistors and storage capacitors.
- the peripheral area 2 is mainly used to lay out traces and some peripheral electronic devices (such as driver ICs (integrated circuits), etc.). However, in order to prevent the sub-pixel units close to the peripheral area 2 in the display area 1 from being affected by the peripheral area 2, a transition area 3 is provided in the area adjacent to the display area 1 of the peripheral area 2. Some virtual sub-pixel units 31 can be arranged in the transition area 3.
- FIG. 1B shows an enlarged view of the area P near the boundary between the display area 1 and the peripheral area 2.
- FIG. 1B shows the display sub-pixel unit 11 in the display area 1 and the virtual sub-pixel unit located in the transition area 3.
- the arrangement of this virtual sub-pixel unit can provide the display sub-pixel unit 11 in the display area 1 close to the peripheral area 2 with an environment similar to the display sub-pixel unit 11 in the display area 1 far from the peripheral area 2, thereby preventing occurrence of Different display sub-pixel units 11 have differences in display brightness.
- the organic light-emitting layer in the OLED display panel is an indispensable structure in the film structure for realizing light emission.
- the organic light-emitting layer can be excited to emit light by controlling the voltage applied to the anode and the cathode.
- the organic light-emitting layer can be produced by, for example, vapor deposition.
- a mask (or high-precision metal mask (FMM)) assembly is needed to achieve this.
- the mask assembly generally includes a mask and a mask frame for holding the mask.
- the mask plate is usually fixed to the mask plate frame by welding.
- FIG. 2 shows a mask assembly 100 according to some embodiments of the present disclosure.
- the mask assembly 100 includes a mask frame 110 and three mask plates 120 fixed on the mask frame 110. It should be noted that the number of mask plates 120 shown in FIG. 2 is only exemplary, and the embodiments of the present disclosure are not limited thereto.
- one reticle assembly 100 may include one reticle 120, two reticles 120, four reticles 120, or more reticles 120.
- the mask plate assembly 100 may further include a cover strip 130, which is located on a side of the mask plate away from the mask plate frame 110, and is used to cover the gaps between adjacent mask plates 120 for use in evaporation.
- each mask 120 is provided with only one set of evaporation patterns, that is, the patterns on the entire mask 120 are only used to evaporate the patterns on one display panel.
- the embodiment of the present disclosure is not limited thereto.
- multiple sets of vapor deposition patterns 128 may be provided on the same mask 120'.
- Each set of vapor deposition patterns 128 corresponds to a display panel, that is, by using such a mask 120', vapor deposition operations can be performed on the film structures on multiple display panels at the same time.
- the mask assembly 100' may also include one or more support bars 140, the support bars 140 are used to support the mask 120', and the support bars 140 are mounted on the mask 120'.
- the orthographic projection falls into the spacer area 129 of the mask 120'.
- the spacer 129 is located between the adjacent vapor deposition patterns 128 and is used to separate the adjacent vapor deposition patterns 128.
- the support bar 140 may be formed separately from the cover bar 130, or may be integrally formed.
- FIG. 3A shows a mask 120 according to some embodiments of the present disclosure.
- the mask plate 120 includes a mask pattern area 121 and a fixing area 122.
- the fixing area 122 is used to be fixed to the mask frame 110, for example, to be fixed to the mask frame 110 by welding.
- the fixing area 122 is located at the periphery of the mask pattern area 121. In order to facilitate the fixing operation (for example, welding operation), the thickness of the fixing area 122 may be greater than the thickness of the mask pattern area 121.
- the mask pattern area 121 includes a display pattern area 123 (represented by a dashed frame in FIG. 3A) and a peripheral pattern area 124.
- a plurality of display pixel openings 125 are provided in the display pattern area 123, and the display pixel openings 125 are used to evaporate the film layer in the display sub-pixel structure on the display panel (for example, organic Luminescent layer).
- the so-called display sub-pixel structure refers to the sub-pixel structure located in the display area of the display panel for generating image pixels, and may include, for example, a light-emitting structure.
- the peripheral pattern area 124 is located at the periphery of the display pattern area 123. In the example shown in FIG. 3A, the peripheral pattern area 124 is arranged to surround the display pattern area 123.
- a positioning opening 126 is provided in the peripheral pattern area 124.
- each set of vapor deposition patterns 128 may include, for example, a display pattern area 123 and a peripheral pattern area 124.
- Fig. 8 schematically shows the process of evaporating a film layer on the substrate 200 by using the mask plate assembly 100, 100'. It can be seen from the figure that during the evaporation process, the mask assembly 100, 100' is placed between the evaporation source 300 and the substrate 200 to be evaporated.
- the organic vapor deposition material emitted from the vapor deposition source 300 can pass through the pixel opening 125 to the corresponding position on the substrate 200, and the position on the substrate 200 corresponding to the unopened portion of the mask 120 is masked by the organic vapor deposition material.
- the template 120 is blocked without being vapor-deposited with organic material or with a small amount of organic material being vapor-deposited. In this way, a desired organic film layer structure can be formed on the substrate 200. If the relative positions of the mask plate 120 and the mask plate frame 110 are misaligned, the display pixel openings 125 on the mask plate 120 may have positioning errors with the correct positions on the substrate 200, resulting in a decrease in product yield.
- FIG. 5 illustrates a process of aligning the mask 120 with respect to the mask frame 110 according to some embodiments of the present disclosure.
- first fix the mask frame 110 establish a reference coordinate system according to the mask frame 110, and determine the desired position (or reference position) of the positioning opening 126 on the mask 120 at this The coordinates in the reference coordinate system (for example, the coordinates of the reference position are (x0, y0)).
- the position capture device 400 determines the coordinates of the actual position of the positioning opening 126 on the mask 120 in the reference coordinate system (for example, the coordinates of the actual position are ( x, y)).
- the position of the mask 120 relative to the mask frame 110 is adjusted according to the error, and the position of the mask 120 is gradually reduced.
- the error is reduced until the error is below a certain threshold.
- the absolute value or square of (x-x0) and the absolute value or square of (y-y0) must be less than a certain threshold before it can be considered that the alignment has been successful.
- the reference position of the center of the positioning hole 126 may be used as the reference position of the positioning hole 126, and the actual position of the center of the positioning hole 126 may be used as the actual position of the positioning hole 126.
- at least one of the position capturer (e.g., camera) 400 and the mask 120 can be moved (e.g., horizontally) to facilitate the capture of the positioning opening 126. Only a few positioning openings 126 and display pixel openings 125 are schematically shown in FIG. 5.
- some display pixel openings 125 can be directly selected for alignment, or the shape and size of the positioning openings 126 do not require special design.
- the display pixel openings 125 are directly used to align the mask 120 and the mask frame 110, there may be problems. The higher the resolution of the OLED display panel, the smaller the size of the organic light-emitting layer in the sub-pixel unit required by the OLED display panel, and the smaller the size of the corresponding display pixel opening 125 on the mask plate 120.
- the size of the display pixel opening 125 of the mask plate 120 with a resolution of 500 PPI is approximately 35 um*60 um
- the size of the display pixel opening 125 of the mask plate 120 with a resolution of 1000 PPI is approximately 15 um*35 um.
- the position capture device for example, a camera 400.
- the field of view of the camera is constant.
- the size of the openings is small and the distribution is denser, the number of openings in the same field of view of the camera will increase significantly.
- the size and shape of the positioning openings 126 and the display pixel openings 125 are not differentiated, when the camera scans quickly, there may be errors in capturing the target of the openings, which will affect the alignment. Operational efficiency.
- a positioning opening 126 with a certain difference in shape and/or size from the display pixel opening 125 is designed, or in other words, at least one of the size and shape of the positioning opening 126 is different from that of the display pixel opening 125
- the display pixel openings 125 are different.
- the display pixel opening 125 has a hexagonal shape, and the maximum size of the display pixel opening 125 in the first direction (ie, the X direction in FIG. 3B) is x2 , The maximum dimension in the second direction (ie, the Y direction in FIG. 3B) is y2.
- the positioning opening 126 has an oblong shape.
- the maximum dimension of the positioning opening 126 in the first direction is x1
- the maximum dimension in the second direction is y1.
- x1 is greater than x2
- y1 is greater than y2.
- the size of the positioning opening 126 is larger than the display pixel opening 125. This can make it easier for the position catcher 400 to catch the position of the positioning opening 126, thereby improving the alignment efficiency.
- the maximum size of the positioning opening 126 is not much different from the maximum size of the display pixel opening 125, the distinction between the positioning opening 126 and the display pixel opening 125 is not good, which is not conducive to the alignment of the mask and the mask frame. If the maximum size of the positioning opening 126 exceeds the display pixel opening 125 too much, the local strength of the mask may also be damaged. In some embodiments, the maximum size of the positioning opening 126 in the first direction is 15% to 30% larger than the maximum size of the display pixel opening 125. In some embodiments, the maximum size of the positioning opening 126 in the second direction is 15% to 30% larger than the maximum size of the display pixel opening 125. However, this is not necessary.
- the maximum size of the positioning opening 126 in the first direction and the maximum size in the second direction may both be smaller than the corresponding size of the display pixel opening 125, or positioning One of the maximum size of the opening 126 in the first direction and the maximum size in the second direction is larger than the corresponding size of the display pixel opening 125, and the other is smaller than the corresponding size of the display pixel opening 125.
- the positioning opening 126 may have an axisymmetric shape, so that the stress near the positioning opening 126 can be evenly distributed.
- the positioning opening 126 may have a shape that is more distinct from the display pixel opening 125.
- the positioning opening 126 may have a circular shape.
- the shape of the positioning opening 126 shown in FIGS. 3A, 3B, 7A, and 7B is merely illustrative, and the embodiment of the present disclosure is not limited thereto. For example, it may also have an ellipse, a rectangle, a hexagon, etc. kind of shape.
- the display sub-pixel unit 11 is provided in the display area 1 of the OLED display panel, and the dummy sub-pixel unit 31 is provided in the transition area 3 close to the display area 1 in the peripheral area 2 of the OLED display panel. Therefore, the display pattern area 123 in the mask 100 in the embodiment according to the present disclosure corresponds to the display area 1 of the OLED display panel, and the display pixel openings 125 located in the display pattern area 123 can be used to implement display sub-pixels, for example. Evaporation of the luminescent material layer in the unit 11 (the position of the luminescent material layer 12 in the display sub-pixel unit 11 is schematically shown in FIG. 1B).
- the peripheral pattern area 124 in the mask 100 in the embodiment according to the present disclosure corresponds to the peripheral area 2 of the OLED display panel.
- a virtual pixel opening 125' may also be provided in the peripheral pattern area 124, the position of which may correspond to the virtual sub-pixel unit 31 in the peripheral area 2, for example, it can be used to realize a virtual sub-pixel Evaporation of the luminescent material layer in the unit 31 (the position of the luminescent material layer 32 in the dummy sub-pixel unit 31 is also schematically shown in FIG. 1B).
- the additional virtual pixel opening 125' in the peripheral pattern area 124 and the virtual pixel opening 125 in the display pattern area 123 may have the same size and shape.
- the positioning opening 126 may be provided in the peripheral pattern area 124 to avoid affecting the production of the display sub-pixel unit 11.
- the positioning opening 126 can be realized by replacing the original virtual pixel opening 125', or in other words, by changing the shape and size of some virtual pixel opening 125'.
- a plurality of positioning openings 126 may be provided in the peripheral pattern area 124. These positioning openings 126 can be symmetrically distributed with respect to the center of the display pattern area 123, which can make the stress distribution of the mask plate 120 more uniform.
- the plurality of positioning openings 126 may include a first positioning opening 1261, a second positioning opening 1262, a third positioning opening 1263, and a fourth positioning opening 1264.
- the first positioning opening 1261, the second positioning opening 1262, the third positioning opening 1263 and the fourth positioning opening 1264 are respectively located at the four corners of the mask pattern area 121 of the mask plate 120.
- each positioning opening 126 may be surrounded by the virtual pixel opening 125'.
- the first positioning opening 1261', the second positioning opening 1262', the third positioning opening 1263', and the fourth positioning opening can also be set.
- the holes 1264' are provided at the four corners of the entire mask pattern area 121 of the mask plate 120', as shown in FIG. 9A.
- positioning openings may be added in other positions of the mask pattern area 121, such as the fifth positioning opening 1265' and the sixth positioning opening 1266'. These positioning openings can also be located at the corners of a certain group of vapor deposition patterns 128 (ie, near the intersection of the support bar 140 and the cover bar 130).
- the positioning opening 126 is not suitable to be provided in the display pattern area 123. In some cases, it is also desirable to use the positioning of the openings in the display pattern area 123 to ensure positioning accuracy.
- the embodiment of the present disclosure also provides a method for aligning the mask plate and the mask plate frame. This method can be used in the manufacturing process of the mask assembly. After the positioning openings 126 are provided on the mask plate 120, the positioning openings 126 provided in the peripheral pattern area 124 of the mask plate 120 can be used to initially align the position of the mask plate 120 relative to the mask plate frame 110.
- the position of the mask 120 relative to the mask frame 110 is precisely aligned with the display pixel openings 125 provided in the display pattern area 123 of the mask 120.
- the position capture device 400 can more easily capture the positioning openings 126 of the mask 120 to improve the alignment efficiency, and the display pixel openings 125 can be reused on the basis of completing the preliminary alignment. Accurate alignment can ensure accuracy. Compared with directly using the pixel opening 125 to align the mask plate 120 and the mask plate 110, the alignment efficiency can be greatly improved, and manual adjustment during the alignment process can be effectively reduced.
- the manufacturing method of the mask plate assembly adopting the above-mentioned alignment method is shown in FIG. 6, for example.
- the method for manufacturing a mask assembly may include:
- Step S1 Initially align the mask with the mask frame using the positioning openings on the mask.
- Step S2 After the initial alignment is successful, the mask plate and the mask plate frame are precisely aligned using the display pixel openings on the mask plate.
- step S1 may further include, for example:
- Step S10 Provide a reference position of the positioning opening on the mask with respect to the frame of the mask;
- Step S20 capturing the actual position of the positioning opening on the mask with respect to the frame of the mask;
- Step S30 Calculate the error between the reference position and the actual position, and determine whether the mask plate and the mask plate frame have been aligned successfully according to the error, if the error is within the first threshold range, the alignment is considered successful, otherwise, readjust The actual position of the mask can be re-aligned.
- a position capturing device 400 such as a camera can be used to capture the actual position of the positioning opening 126, for example, it can be realized by an image processing method, for example, the edge of the positioning opening 126 can be obtained first and the positioning opening 126 can be calculated. The size in the first direction and the second direction to determine that the positioning opening 126 is correctly captured, and then further identifying the position of the center of the positioning opening 126 to determine the position of the positioning opening 126 relative to the mask frame 110 The coordinates of the actual location.
- the error between the reference position and the actual position can be defined as (x-x0) 2 + (y -y0) 2 .
- the error is gradually reduced to within the first threshold range, thereby completing the preliminary alignment.
- step S2 may further include, for example:
- Step S40 Provide a reference position of a predetermined display pixel opening on the mask plate relative to the frame;
- Step S50 capturing the actual position of the predetermined display pixel opening on the mask plate relative to the frame;
- Step S60 Calculate the error between the reference position and the actual position of the predetermined display pixel opening relative to the frame, and determine whether the mask and the frame have been successfully aligned according to the error, if the error is within the second threshold range It is considered that the alignment is successful, otherwise, the actual position of the mask is re-adjusted to re-align.
- step S2 is similar to that of step S1, but due to the use of finer display pixel openings 125 in the display pattern area 123, the alignment accuracy of the mask 120 and the mask frame 110 can be higher.
- the second threshold is less than the first threshold.
- the embodiment of the present disclosure is not limited to this.
- a virtual pixel opening 125' may be used instead of the display pixel opening 125 for fine positioning. The specific details will not be elaborated.
- the method for manufacturing the mask assembly may further include:
- Step S70 Fix the precisely aligned mask plate and the mask plate assembly together.
- Step S70 can be completed by welding, for example.
- the thickness of the fixing area 122 of the mask plate 120 may be greater than the thickness of the mask pattern area 121.
- the thickness of the mask pattern area 121 of the mask plate 120 may be 5 ⁇ m to 20 ⁇ m, such as 10 ⁇ m; and the thickness of the fixing area 122 of the mask plate 120 may be, for example, 20 ⁇ m to 30 ⁇ m, such as 25 ⁇ m.
- a thickness transition area 127 may be provided between the fixing area 122 and the mask pattern area 121, as shown in FIG. 4.
- the width of the thickness transition zone may be 2 to 20 mm, for example.
- the masks 120, 120' and mask assemblies 100, 100' of the embodiments of the present disclosure are particularly suitable for vapor deposition of light-emitting material layers on high-resolution OLED display panels, such as display pixel openings 125 and virtual pixel openings
- the maximum dimension of 125' in the first direction may be, for example, 10 to 25 micrometers (such as 15 micrometers), and the maximum dimension in the second direction may be, for example, 25 to 45 micrometers (such as 35 micrometers).
- the embodiment of the present disclosure is not limited thereto, and the mask 120, 120' and the mask assembly 100, 100' according to the embodiment of the present disclosure may also be used for vapor deposition of other film structures on the OLED display panel.
- the display pixel openings 125, the virtual pixel openings 125', and the positioning openings 126 on the mask plates 120 and 120' are through holes, which can be, for example, laser laser, chemical liquid etching, electroforming, etc.
- the manufacturing precision can be, for example, plus or minus 1 micrometer to 1.5 micrometers.
- the material of the mask plate 120 may be, for example, a nickel-iron alloy, and the nickel-iron alloy may contain one or more of elements such as silicon, manganese, titanium, oxygen, carbon, oxygen, and phosphorus.
- the embodiment of the present disclosure also provides a display panel 1000 having a structure corresponding to the above-mentioned mask plate 120.
- a plurality of virtual sub-pixel units are provided in the peripheral area 2.
- Figure 1B shows two different types of virtual sub-pixel units, hereinafter referred to as a first type of virtual sub-pixel unit 31 and a second type of virtual sub-pixel unit 31', respectively.
- the first type of virtual sub-pixel unit 31 includes a first virtual luminescent material layer 32
- the second type of virtual sub-pixel unit 31' includes a second virtual luminescent material layer 32'
- the second virtual luminescent material layer 32' and the first dummy luminescent material layer 32 are made of the same material, for example, both can be made of organic materials that emit red light.
- the size and shape of the orthographic projection of the second virtual luminescent material layer 32' on the base substrate 30 see FIGS.
- the shape of the orthographic projection of the first virtual luminescent material layer 32 on the base substrate 30 is hexagonal, and the orthographic projection of the second virtual luminescent material layer 32' on the base substrate 30 is The shape is oblong.
- the size of the orthographic projection of the second virtual luminescent material layer 32' on the base substrate 30 in the X direction and the Y direction is also larger than that of the first virtual luminescent material layer 32 on the base substrate 30. Orthographic projection on.
- the largest dimension of the orthographic projection of the second dummy luminescent material layer 32' on the base substrate 30 in the first direction is larger than that of the first dummy luminescent material layer 32 on the base substrate.
- the maximum dimension of the orthographic projection on 30 in the first direction is large, for example, 15% to 30% larger.
- the largest dimension of the orthographic projection of the second dummy luminescent material layer 32' on the base substrate 30 in the second direction (for example, the Y direction) perpendicular to the first direction is larger than that of the first dummy.
- the maximum dimension of the orthographic projection of the luminescent material layer 32 on the base substrate 30 in the second direction is large, for example, 15% to 30% larger.
- the luminescent material layer in the display panel can be produced by evaporation with the aid of a mask (for example, a fine metal mask (FMM)) .
- a mask for example, a fine metal mask (FMM)
- FMM fine metal mask
- positioning openings 126 can be provided in the peripheral pattern area of the mask.
- the positioning openings 126 are at least one of the shape and size. There is a significant difference between the display pixel opening 125 and the virtual pixel opening 125'.
- the film layer vapor deposited through such a mask assembly 100, 100' will have a corresponding size change at a position corresponding to the positioning opening 126.
- the second dummy luminescent material layer 32' in the dummy sub-pixel unit 31' of the second type described above has such a structure.
- the film layer deposited by FMM mainly includes a luminescent material layer and an auxiliary luminescent layer.
- FIG. 1C shows a schematic diagram of the film structure of the display sub-pixel unit in the display area 1.
- the figure shows three display sub-pixel units.
- the first display sub-pixel unit 11A there is a first electrode 21A (for example, an anode), a display auxiliary light-emitting layer 22A located on the side of the first electrode 21A away from the base substrate 30, and a display auxiliary light-emitting layer 22A located on the display auxiliary
- first electrode 21B for example, an anode
- display auxiliary light-emitting layer 22B located on the side of the first electrode 21B away from the base substrate 30
- first electrode 21C for example, an anode
- a display auxiliary light-emitting layer 22C located on the side of the first electrode 21C away from the base substrate 30, located in the The display luminescent material layer 23C on the side of the display auxiliary luminescent layer 22C away from the base substrate 30 and the second electrode 24 (eg, cathode) on the side of the display luminescent material layer 23C away from the base substrate 30
- display luminescent material layer and “display auxiliary luminescent layer” mainly refer to the “luminescent material layer” and “auxiliary luminescent layer” in the sub-pixel unit used for image display in the display area, so as to interact with the virtual pixel.
- the “virtual luminescent material layer” and “virtual auxiliary luminescent layer” in the unit are distinguished.
- the “display luminescent material layer” and “display auxiliary luminescent layer” in the sub-pixel unit in the display area can participate in light emission during work, while the “virtual luminescent material layer” and “virtual auxiliary luminescence layer” in the virtual pixel unit Layer” is not working.
- An encapsulation structure may also be provided on the side of the second electrode 24 away from the base substrate 30, for example, including a first inorganic encapsulation layer 25, an organic encapsulation layer 26, and a second inorganic encapsulation layer 27 stacked in sequence.
- an insulating layer 40 and a driving circuit structure such as a thin film transistor 44 may also be provided. Plating related content, therefore, the insulating layer 40 and the structure of the driving circuit will not be shown and discussed in detail.
- the first display sub-pixel unit 11A, the second display sub-pixel unit 11B, and the third display sub-pixel unit 11C may respectively represent the display sub-pixel unit of the first color, the display sub-pixel unit of the second color, and the third color.
- the three colors may be red (R), green (G), and blue (B), for example.
- the embodiments of the present disclosure are not limited thereto.
- the display panel may include only two-color display sub-pixel units, four-color display sub-pixel units, or multiple-color display sub-pixel units.
- Fig. 1D shows an exemplary cross-sectional view of a first type of virtual sub-pixel unit 31A and a second type of virtual sub-pixel unit 31A'.
- the pixel defining layer 28 may have no opening area.
- the first electrode 41A' is located on the side of the pixel defining layer 28 facing the base substrate 30, and the first dummy auxiliary light-emitting layer 42A, the first dummy light-emitting material layer 43A, and the second The two electrodes 24 are sequentially stacked on the other side of the pixel defining layer 28 away from the base substrate 30. As shown in FIG.
- the orthographic projection of the first dummy luminescent material layer 43A on the base substrate 30 and the orthographic projection of the first dummy auxiliary light-emitting layer 42A on the base substrate 30 at least partially overlap.
- the second type of dummy sub-pixel unit 31A' corresponding to the first type of dummy sub-pixel unit 31A, there is also a first electrode 41A' and located on the side of the pixel defining layer 28 away from the base substrate 30
- the orthographic projection of the second virtual luminescent material layer 43A' on the base substrate 30 and the orthographic projection of the second virtual auxiliary light-emitting layer 42A' on the base substrate 30 at least partially overlap .
- the second dummy auxiliary light-emitting layer 42A′ and the first dummy auxiliary light-emitting layer 42A are made of the same material and arranged on the same layer.
- the second dummy auxiliary light-emitting layer 42A′ and the first dummy auxiliary light-emitting layer 42A may Correspond to sub-pixel units of the same color.
- the size of the orthographic projection of the second dummy auxiliary light-emitting layer 42A' on the base substrate 30 is larger than the size of the orthographic projection of the first dummy auxiliary light-emitting layer 42A on the base substrate 30.
- the largest dimension of the orthographic projection of the second dummy auxiliary light-emitting layer 42A' on the base substrate 30 is larger than that of the first dummy auxiliary light-emitting layer 42A.
- the maximum dimension of the orthographic projection on the base substrate 30 is 15% to 30% larger.
- the embodiment of the present disclosure is not limited thereto, as long as at least one of the size and shape of the orthographic projection of the second virtual auxiliary light-emitting layer 42A′ on the base substrate 30 is the same as the The orthographic projection of the first dummy auxiliary light-emitting layer 42A on the base substrate 30 is different so that the two can be easily distinguished.
- the first structure layer in the first dummy luminescent material layer 43A and the first dummy auxiliary luminescent layer 42A may be the first dummy luminescent material layer 43A and the first dummy auxiliary luminescent layer 42A).
- any one of the light-emitting layer 42A) is arranged in the same layer as the second structure layer in the second dummy light-emitting material layer 43A′ and the second dummy auxiliary light-emitting layer 42A′ (the second structure layer may be the first One of the dummy luminescent material layer 43A and the first dummy auxiliary luminescent layer 42A arranged in the same layer as the first structure layer), the size and shape of the orthographic projection of the second structure layer on the base substrate 30 At least one of them is different from the orthographic projection of the first structure layer on the base substrate 30.
- the pixel defining layer 28 connects the first electrodes 41A, 41A′ with the first dummy auxiliary light-emitting layer 42A and The second dummy auxiliary light emitting layers 42A' are separated.
- the pixel defining layer 28 in the virtual sub-pixel unit and the pixel defining layer 28 in the pixel area are substantially the same layer.
- the structure of the pixel defining layer 28 and the display The area is different, and it does not have an open area. Therefore, in the first type of dummy sub-pixel unit 31A and the second type of dummy sub-pixel unit 31A′, any light-emitting functional layer is not connected to the first electrodes 41A, 41A. 'touch.
- the positions of the positioning openings on the two fine metal masks may be located in the same virtual sub-pixel unit, or may not be located in the same virtual sub-pixel unit. In the example shown in FIG.
- the maximum size of the orthographic projection of the second dummy auxiliary light-emitting layer 42A' on the base substrate 30 is larger than the orthographic projection of the first dummy auxiliary light-emitting layer 42A on the base substrate 30 and the second The maximum size of the orthographic projection of the two dummy luminescent material layers 43A′ on the base substrate 30 is also larger than the orthographic projection of the first dummy luminescent material layer 43A on the base substrate 30.
- the maximum size of the orthographic projection of the second dummy auxiliary light-emitting layer 42A' on the base substrate 30 is substantially the same as the maximum size of the orthographic projection of the second dummy light-emitting material layer 43A' on the base substrate 30.
- the second type of dummy sub-pixel unit 31A′ not only corresponds to the positioning openings on the mask plate used for vapor deposition of the first dummy auxiliary light-emitting layer 42A, but also corresponds to the positioning openings used for vapor deposition of the first dummy light-emitting material layer.
- the positioning openings on the 43A mask plate correspond to those.
- the largest dimension of the orthographic projection of the second dummy luminescent material layer 43A" on the base substrate 30 is larger than that of the first dummy luminescent material layer 43A on the base substrate 30.
- the orthographic projection is large, but the maximum size of the orthographic projection of the second virtual auxiliary light-emitting layer 42A" on the base substrate 30 is substantially the same as the orthographic projection of the first virtual auxiliary light-emitting layer 42A on the base substrate 30.
- the second type of dummy sub-pixel unit 31A" does not correspond to the positioning openings on the mask plate used for vapor deposition of the first dummy auxiliary light-emitting layer 42A, but only corresponds to the positioning openings used for vapor deposition of the first dummy light-emitting material.
- the positioning openings on the mask plate of layer 43A correspond to each other.
- the virtual sub-pixel units may also have more types.
- the plurality of virtual sub-pixel units may further include a third type of virtual sub-pixel unit 31B and a fourth type of virtual sub-pixel unit 31B', the third type of virtual sub-pixel unit 31B includes a third dummy luminescent material layer 43B, the fourth type of dummy sub-pixel unit 31B′ includes a fourth dummy luminescent material layer 43B′, the third dummy luminescent material layer 43B and the fourth dummy luminescent material layer 43B′ Made of the same material and arranged on the same layer.
- the materials of the third dummy luminescent material layer 43B and the fourth dummy luminescent material layer 43B' are different from the materials of the first dummy luminescent material layer 43A and the second dummy luminescent material layer 43A'. That is, the virtual sub-pixel unit 31B of the third type and the virtual sub-pixel unit 31B of the fourth type are different from the sub-pixel units corresponding to the virtual sub-pixel unit 31A of the first type and the virtual sub-pixel unit 31A' of the second type. The colors are different.
- the size of the orthographic projection of the fourth dummy luminescent material layer 43B' on the base substrate 30 is significantly larger than the orthographic projection of the third dummy luminescent material layer 43B on the base substrate 30.
- the largest dimension of the orthographic projection of the fourth dummy luminescent material layer 43B′ on the base substrate 30 is larger than that of the third dummy luminescent material layer.
- the maximum dimension of the orthographic projection of 43B on the base substrate 30 is 15% to 30% larger, and the second direction is perpendicular to the first direction.
- this is only exemplary, and the embodiment of the present disclosure is not limited thereto, as long as at least one of the size and shape of the orthographic projection of the fourth dummy luminescent material layer 43B′ on the base substrate 30 is the same as the The orthographic projection of the third dummy luminescent material layer 43B on the base substrate 30 is different to facilitate the distinction between the two.
- the dimension of the orthographic projection of the fourth dummy luminescent material layer 43B' on the base substrate 30 in at least one of the first direction and the second direction is the same as that of the second dummy luminescent material layer 43A' The orthographic projection on the base substrate 30 is different.
- the third type of dummy sub-pixel unit 31B further includes a third dummy auxiliary light-emitting layer 42B, and the third dummy auxiliary light-emitting layer 42B is located on the third dummy light-emitting material.
- the layer 43B faces the side of the base substrate 30 and is located on the side of the base substrate 30 facing the third dummy luminescent material layer 43B.
- the fourth type of dummy sub-pixel unit 31B' further includes a fourth dummy auxiliary The light-emitting layer 42B', the fourth dummy auxiliary light-emitting layer 42B' is located on the side of the fourth virtual light-emitting material layer 43B' facing the base substrate 30 and on the base substrate 30 facing the fourth virtual light-emitting material
- the fourth dummy auxiliary light-emitting layer 42B′ and the third dummy auxiliary light-emitting layer 42B are made of the same material and arranged in the same layer. As shown in FIG.
- the orthographic projection of the third dummy light-emitting material layer 43B on the base substrate 30 and the orthographic projection of the third dummy auxiliary light-emitting layer 42B on the base substrate 30 at least partially overlap.
- the orthographic projection of the fourth dummy luminescent material layer 43B' on the base substrate 30 and the orthographic projection of the fourth dummy auxiliary light-emitting layer 42B' on the base substrate 30 at least partially overlap.
- the size of the orthographic projection of the fourth dummy auxiliary light-emitting layer 42B' on the base substrate 30 is significantly larger than the size of the orthographic projection of the third dummy auxiliary light-emitting layer 42B on the base substrate 30.
- the largest dimension of the orthographic projection of the fourth dummy auxiliary light-emitting layer 42B' on the base substrate 30 is larger than that of the third dummy auxiliary light-emitting layer 42B on the substrate 30.
- the maximum dimension of the orthographic projection on the substrate 30 is 15% to 30% larger, and the second direction is perpendicular to the first direction.
- the plurality of display sub-pixel units includes a display sub-pixel unit of a first color and a display sub-pixel unit of a second color, and the display auxiliary light-emitting layer 22A in the display sub-pixel unit of the first color It is made of the same material and arranged in the same layer as the second dummy auxiliary light-emitting layers 42A', 42A", and the display light-emitting material layer 23A and the second dummy light-emitting material layer 43A' in the display sub-pixel unit of the first color are 43A" is made of the same material and arranged on the same layer; the display auxiliary light-emitting layer 22B and the fourth dummy auxiliary light-emitting layer 42B' in the display sub-pixel unit of the second color are made of the same material and arranged on the same layer,
- the display luminescent material layer 23B and the fourth dummy luminescent material layer 43B' in the display sub-pixel unit of the second color are made of the same material and arranged in the same
- the projection of at least one of the light-emitting layers 42B' on the base substrate has an axisymmetric shape.
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Abstract
Description
Claims (22)
- 一种显示面板,包括:衬底基板;以及设置在衬底基板上的显示区和周边区,所述周边区围绕显示区设置;其中,所述周边区中设置有多个虚拟子像素单元,所述多个虚拟子像素单元包括第一类型的虚拟子像素单元和第二类型的虚拟子像素单元,所述第一类型的虚拟子像素单元包括第一虚拟发光材料层和第一虚拟辅助发光层,所述第二类型的虚拟子像素单元包括第二虚拟发光材料层和第二虚拟辅助发光层,所述第二虚拟发光材料层和第一虚拟发光材料层由相同材料制成且同层布置,所述第二虚拟辅助发光层和第一虚拟辅助发光层由相同材料制成且同层布置,所述第一虚拟辅助发光层位于所述第一虚拟发光材料层朝向衬底基板的一侧且位于所述衬底基板朝向所述第一虚拟发光材料层的一侧,所述第二虚拟辅助发光层位于所述第二虚拟发光材料层朝向衬底基板的一侧且位于所述衬底基板朝向所述第二虚拟发光材料层的一侧,所述第一虚拟发光材料层在衬底基板上的正投影与所述第一虚拟辅助发光层在衬底基板上的正投影至少部分地交叠,所述第二虚拟发光材料层在衬底基板上的正投影与所述第二虚拟辅助发光层在衬底基板上的正投影至少部分地交叠;其中,所述第一虚拟发光材料层和所述第一虚拟辅助发光层中的第一结构层与所述第二虚拟发光材料层和所述第二虚拟辅助发光层中的第二结构层同层布置,所述第二结构层在衬底基板上的正投影的尺寸和形状中的至少一者与所述第一结构层在衬底基板上的正投影不同。
- 根据权利要求1所述的显示面板,其中,在第一方向和第二方向中的至少一者上,所述第二虚拟发光材料层在衬底基板上的正投影的最大尺寸比第一虚拟发光材料层在衬底基板上的正投影的最大尺寸大15%至30%。
- 根据权利要求1或2所述的显示面板,其中,在第一方向和第二方向中的至少一者上,所述第二虚拟辅助发光层在衬底基板上的正投影的最大尺寸比第一 虚拟辅助发光层在衬底基板上的正投影的最大尺寸大15%至30%,所述第二方向与所述第一方向垂直。
- 根据权利要求1所述的显示面板,其中,所述多个虚拟子像素单元还包括第三类型的虚拟子像素单元和第四类型的虚拟子像素单元,所述第三类型的虚拟子像素单元包括第三虚拟发光材料层,所述第四类型的虚拟子像素单元包括第四虚拟发光材料层,所述第三虚拟发光材料层和第四虚拟发光材料层由相同材料制成,第三虚拟发光材料层和第四虚拟发光材料层的材料与第一虚拟发光材料层和第二虚拟发光材料层的材料不同;其中,所述第四虚拟发光材料层在衬底基板上的正投影的尺寸和形状中的至少一者与所述第三虚拟发光材料层在衬底基板上的正投影不同。
- 根据权利要求4所述的显示面板,其中,在第一方向和第二方向中的至少一者上,所述第四虚拟发光材料层在衬底基板上的正投影的最大尺寸比第三虚拟发光材料层在衬底基板上的正投影的最大尺寸大15%至30%,所述第二方向与所述第一方向垂直。
- 根据权利要求4所述的显示面板,其中,所述第四虚拟发光材料层在衬底基板上的正投影在第一方向和第二方向中的至少一个方向上的尺寸与第二虚拟发光材料层在衬底基板上的正投影不同。
- 根据权利要求4所述的显示面板,其中,所述第三类型的虚拟子像素单元还包括第三虚拟辅助发光层,所述第三虚拟辅助发光层位于所述第三虚拟发光材料层朝向衬底基板的一侧且位于所述衬底基板朝向所述第三虚拟发光材料层的一侧,所述第四类型的虚拟子像素单元还包括第四虚拟辅助发光层,所述第四虚拟辅助发光层位于所述第四虚拟发光材料层朝向衬底基板的一侧且位于所述衬底基板朝向所述第四虚拟发光材料层的一侧,所述第四虚拟辅助发光层和第三虚拟辅助发光层由相同材料制成,其中,所述第四虚拟辅助发光层在衬底基板上的正投影的尺寸和形状中的至少一者与所述第三虚拟辅助发光层在衬底基板上的正投影不同。
- 根据权利要求7所述的显示面板,其中,在第一方向和第二方向中的至少一者上,所述第四虚拟辅助发光层在衬底基板上的正投影的最大尺寸比第三虚拟辅助发光层在衬底基板上的正投影的最大尺寸大15%至30%,所述第二方向与所述第一方向垂直。
- 根据权利要求7或8所述的显示面板,其中,所述显示区包括多个显示子像素单元,至少一个显示子像素单元包括:第一电极、位于所述第一电极的远离衬底基板的一侧上的显示辅助发光层、位于所述显示辅助发光层的远离衬底基板的一侧上的显示发光材料层以及位于所述显示发光材料层的远离衬底基板的一侧上的第二电极,其中,所述多个显示子像素单元包括第一颜色的显示子像素单元和第二颜色的显示子像素单元,所述第一颜色的显示子像素单元中的显示辅助发光层与第二虚拟辅助发光层由相同材料制成且布置于同一层,所述第一颜色的显示子像素单元中的显示发光材料层与第二虚拟发光材料层由相同材料制成且布置于同一层;所述第二颜色的显示子像素单元中的显示辅助发光层与第四虚拟辅助发光层由相同材料制成且布置于同一层,所述第二颜色的显示子像素单元中的显示发光材料层与第四虚拟发光材料层由相同材料制成且布置于同一层。
- 根据权利要求7或8所述的显示面板,其中,所述第二虚拟发光材料层、所述第二虚拟辅助发光层、所述第四虚拟发光层和所述第四虚拟辅助发光层中的至少一者在衬底基板上的投影具有轴对称形状。
- 根据权利要求1至8中任一项所述的显示面板,其中,所述第一类型的虚拟子像素单元和第二类型的虚拟子像素单元中的至少一者还包括:第一电极,所述第一电极位于衬底基板的朝向第一虚拟辅助发光层和第二虚拟辅助发光层的一侧;像素界定层,所述像素界定层位于所述第一电极的远离衬底基板的一侧且位于所述第一虚拟辅助发光层和第二虚拟辅助发光层朝向衬底基板的一侧;以及第二电极,所述第二电极位于第一虚拟发光材料层和第二虚拟发光材料层的 远离衬底基板的一侧,其中,所述像素界定层将所述第一电极与所述第一虚拟辅助发光层和第二虚拟辅助发光层分隔开。
- 一种用于蒸镀的掩模板,包括:掩模图案区,所述掩模图案区包括一组或多组蒸镀图案,至少一组蒸镀图案包括:显示图案区域,在所述显示图案区域中设置有显示像素开孔,所述显示像素开孔用于蒸镀显示面板上的子像素结构中的膜层;和周边图案区域,所述周边图案区域位于所述显示图案区域的周边,在所述周边图案区域中设置有定位开孔,所述定位开孔用于对所述掩模板进行定位,所述周边图案区域中还设置有虚拟像素开孔,所述虚拟像素开孔用于蒸镀显示面板上的虚拟子像素结构中的膜层,其中所述定位开孔的尺寸和形状中的至少一者与所述显示像素开孔和虚拟像素开孔不同。
- 根据权利要求12所述的掩模板,其中,在第一方向和第二方向中的至少一者上,所述定位开孔的最大尺寸大于所述显示像素开孔和所述虚拟像素开孔的最大尺寸,所述第二方向与所述第一方向垂直。
- 根据权利要求13所述的掩模板,其中,在第一方向和第二方向中的至少一者上,所述定位开孔的最大尺寸比所述显示像素开孔和所述虚拟像素开孔的最大尺寸大15%至30%。
- 根据权利要求12至14中任一项所述的掩模板,其中,所述周边图案区域中设置有多个定位开孔,所述多个定位开孔相对于所述显示图案区域的中心对称分布。
- 根据权利要求15所述的掩模板,其中,所述多个定位开孔包括第一定位开孔、第二定位开孔、第三定位开孔和第四定位开孔,所述第一定位开孔、第二 定位开孔、第三定位开孔和第四定位开孔分别位于所述掩模板的掩模图案区的四个角部。
- 根据权利要求12至16中任一项所述的掩模板,其中,所述掩模板还包括固接区以及位于所述固接区和掩模图案区之间的厚度过渡区,所述固接区位于所述掩模图案区周围,用于与掩模板框架固接,所述固接部的厚度大于所述掩模图案区的厚度。
- 一种掩模板组件,包括:一个或更多个根据权利要求12至17中任一项所述的掩模板;以及掩模板框架,所述掩模板框架用于支撑和固定所述掩模板,其中,所述掩模板还包括固接区,所述固接区位于所述掩模图案区的周围,与所述掩模板框架固接在一起。
- 根据权利要求18所述的掩模板组件,其中,所述掩模板组件包括多个所述掩模板,至少一个所述掩模板的图案区包括多组蒸镀图案,相邻的两组蒸镀图案之间具有间隔区,且所述掩模板组件还包括:至少一个支撑条,所述支撑条用于支撑所述掩模板,所述支撑条在掩模板上的正投影落入掩模板的间隔区;以及至少一个遮盖条,所述遮盖条位于相邻的掩模板的边界处且覆盖相邻的掩模板之间的间隙。
- 一种用于制作掩模板组件的方法,所述掩模板组件为根据权利要求18或19所述的掩模板组件,所述方法包括:利用掩模板上的定位开孔将掩模板和掩模板框架进行初步对位;在所述初步对位成功之后利用掩模板上的显示像素开孔或虚拟像素开孔将掩模板和掩模板框架进行精对位;以及将经过精对位的掩模板和掩模板组件固接在一起。
- 根据权利要求20所述的方法,其中,所述利用掩模板上的定位开孔将掩 模板和掩模板框架进行初步对位包括:提供掩模板上的定位开孔相对于掩模板框架的参考位置;捕捉掩模板上的定位开孔相对于掩模板框架的实际位置;计算参考位置和实际位置之间的误差,并根据该误差来确定掩模板与掩模板框架是否已经对位成功,如果误差在第一阈值范围内则认为对位成功,反之则重新调整掩模板的实际位置以重新对位。
- 根据权利要求20所述的方法,其中,所述利用掩模板上的显示像素开孔或虚拟像素开孔将掩模板和掩模板框架进行精对位包括:提供掩模板上的预定的显示像素开孔或虚拟像素开孔相对于掩模板框架的参考位置;捕捉掩模板上的预定的显示像素开孔或虚拟像素开孔相对于掩模板框架的实际位置;计算所述预定的显示像素开孔或虚拟像素开孔相对于框架的参考位置和实际位置之间的误差,并根据该误差来确定掩模板与框架是否已经对位成功,如果误差在第二阈值范围内则认为对位成功,反之则重新调整掩模板的实际位置以重新对位,第二阈值小于第一阈值。
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| US17/271,013 US12279511B2 (en) | 2020-05-11 | 2020-05-11 | Display panel, mask, mask assembly, and method of manufacturing mask assembly |
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| KR102934006B1 (ko) * | 2020-12-29 | 2026-03-04 | 엘지디스플레이 주식회사 | 백색 발광 소자 및 이를 포함한 발광 표시 장치 |
| CN115188788A (zh) * | 2022-06-29 | 2022-10-14 | 武汉天马微电子有限公司 | 显示面板及显示装置 |
| US12262597B2 (en) * | 2022-11-28 | 2025-03-25 | Boe Technology Group Co., Ltd. | Display substrate and display device |
| CN116056514B (zh) * | 2022-12-28 | 2023-12-19 | 惠科股份有限公司 | 显示面板及其制作方法、显示装置 |
| CN120265045B (zh) * | 2025-06-03 | 2025-10-17 | 合肥维信诺科技有限公司 | 显示面板及其制备方法、显示模组及其对位方法 |
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