WO2021190409A1 - 像素驱动电路、显示面板及电子设备 - Google Patents
像素驱动电路、显示面板及电子设备 Download PDFInfo
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- WO2021190409A1 WO2021190409A1 PCT/CN2021/081767 CN2021081767W WO2021190409A1 WO 2021190409 A1 WO2021190409 A1 WO 2021190409A1 CN 2021081767 W CN2021081767 W CN 2021081767W WO 2021190409 A1 WO2021190409 A1 WO 2021190409A1
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Definitions
- This application relates to the field of display technology, and in particular to a pixel drive circuit, a display panel, and an electronic device.
- each pixel circuit includes multiple Thin Film Transistor (TFT) drive switches and an Organic Light-Emitting Diode (Organic Light-Emitting Diode) display circuit.
- TFT Thin Film Transistor
- Organic Light-Emitting Diode Organic Light-Emitting Diode
- Emitting Diode, OLED usually adopts 7T1C (7 TFT transistors and 1 capacitor) pixel compensation circuit, and drive circuit to drive and light up each display device unit.
- 7T1C drive circuit input signal includes: OLED light-emitting control signal (Emission, EM), Scan[n], Scan[n-1], Vini (initial reset signal), Vdata (data signal), Vdd (high signal);
- the drive circuit usually includes Scan GOA (Gate Driver On Array, array substrate row drive scanning circuit) circuit and EM array substrate row drive circuit (Emit Gate Driver On Array, EM GOA), used in Scan GOA and EM GOA (EOA) circuits CK (clock signal) ⁇ XCK (external clock signal) ⁇ VGL (low potential) ⁇ VGH (high potential) ⁇ STV (initial signal) and other input signals, after passing through the sequential circuit MOS switch unit (multiple TFTs and multiple capacitors) ), the drive timing of each row after the output stage is passed to the pixel circuit in the display area, as shown in Figure 1.
- RGBG pixel arrangement is usually used (every two pixels share a green sub-pixel, which makes the area of blue OLED larger, and at the same time brings a higher panel aperture ratio, so that This reduces the current required to achieve a considerable luminous intensity, thereby delaying the attenuation speed and increasing the life of the display panel).
- this arrangement has 2 display colors on a column of pixels.
- the GOA integrated circuit is prone to waveform delay caused by R (resistance) and C (capacitance) during the stage transfer process, and the scanning signal Gate output waveform delay occurs, and the Vdata voltage of the pixel circuit unit is written In the process of the stage, it is easy to write the Vdata voltage of the previous frame, resulting in a pure color display color shift, for example, the red screen is bluish, and the blue screen is reddish.
- the embodiments of the present application provide a pixel driving circuit, a display panel, and an electronic device to solve the problem of the color shift of the pure color display caused by the delay of the output waveform in the prior art.
- an embodiment of the present application provides a pixel driving circuit, including:
- At least four gate lines are arranged along the first direction of the pixel array, a row of pixel circuits is arranged between two adjacent gate lines, and each row of pixel circuits corresponds to one gate line;
- At least eight data lines arranged along a second direction perpendicular to the first direction and intersecting each gate line, each data line being connected to the pixel circuits corresponding to the same color sub-pixels in a column of pixel circuits; as well as
- a demultiplexer circuit connected to the data line, and the demultiplexer circuit is used to control the data line to communicate with an integrated circuit IC chip.
- an embodiment of the present application provides a display panel including the above-mentioned pixel driving circuit.
- an embodiment of the present application provides an electronic device including the above-mentioned display panel.
- the sub-pixels of the same color in the unit column are inputted by the same data line to input the data signal, so that the pure color screen will not cause Wrong writing of signals of different colors in the previous frame caused color shift, which ensures the consistency of the picture display and improves the color shift of the display panel.
- Figure 1 shows a schematic diagram of a prior art AMOLED display panel driving architecture
- FIG. 2 shows a schematic diagram of a pixel driving circuit according to an embodiment of the present application
- Figure 3 shows a schematic diagram of the arrangement of RGBG pixels
- Figure 4 shows a sequence diagram of an embodiment of the present application
- FIG. 5 shows a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application.
- An embodiment of the present application provides a pixel driving circuit, as shown in FIG. 2, including:
- At least four gate lines 2 are arranged along the first direction of the pixel array, a row of pixel circuits 1 is arranged between two adjacent gate lines 2, and each row of pixel circuits 1 corresponds to one gate line 2;
- At least eight data lines 3 arranged in a second direction perpendicular to the first direction and intersecting each gate line 2, and each data line 3 corresponds to the sub-pixels of the same color in a column of pixel circuits 1 Pixel circuit 1 is connected;
- the pixel driving circuit provided by the embodiment of the present invention includes a pixel array located in a display area, at least four gate lines 2 and at least eight data lines 3 arranged in the pixel array, and a demultiplexer circuit 4 arranged in a non-display area.
- the pixel array adopts RGBG pixel arrangement, and the RGBG pixel arrangement can be seen in Figure 3.
- the pixel array includes a plurality of pixel circuits 1 arranged in an array manner, each pixel circuit 1 and a corresponding organic light emitting diode form a pixel unit, and the plurality of pixel units form a pixel array.
- At least four gate lines 2 are arranged along the first direction of the pixel array, a row of pixel circuits 1 is arranged between two adjacent gate lines 2, and each row of pixel circuits 1 corresponds to one gate line 2.
- At least eight data lines 3 are sequentially arranged along the second direction, and form a form of intersecting each gate line 2.
- Each data line 3 is connected to the pixel circuits 1 corresponding to the same color sub-pixels in a column of pixel circuits 1, which can ensure the consistency of the picture display and improve the problem of the color shift of the display panel.
- Each data line 3 is connected to the demultiplexer circuit 4, through the demultiplexer circuit 4, the data line 3 can be connected to an integrated circuit (IC) chip, so that the data line 3 can control the pixel circuit 1 connected to it.
- IC integrated circuit
- the sub-pixels of the same color in the unit column use the same data line to input data signals, which ensures the display of the screen. Consistency improves the color cast problem of the display panel.
- the pixel driving circuit further includes:
- the array substrate row connected to the output terminal of the IC chip drives the GOA unit 5;
- the GOA unit 5 includes a first clock signal line 51, a second clock signal line 52, a third clock signal line 53, and a fourth clock signal line 54 and a plurality of first GOA circuits 55 connected to odd-numbered rows of gate lines 2 and a plurality of second GOA circuits 56 connected to even-numbered rows of gate lines 2;
- the first GOA circuit 55 is connected to the first clock signal line 51 and the second clock signal line 52, and the second GOA circuit 56 is connected to the third clock signal line 53 and the fourth clock signal line 54;
- the timings of the first clock signal line 51 and the second clock signal line 52 are opposite, and the timings of the third clock signal line 53 and the fourth clock signal line 54 are opposite.
- the GOA unit 5 is connected to the output terminal of the IC chip and includes four clock signal lines. Two additional clock signal lines are added to the original circuit. It also includes a plurality of first GOA circuits 55 and a plurality of second GOA circuits 56.
- the number of GOA circuits 55 is equal to the number of odd rows of gate lines 2 in the pixel array
- the number of second GOA circuits 56 is equal to the number of even rows of gate lines 2 in the pixel array, that is, each odd row of gate lines 2 corresponds to A first GOA circuit 55, and each gate line 2 of an even-numbered row corresponds to a second GOA circuit 56.
- the timings of the first clock signal line 51 and the second clock signal line 52 are opposite, and the first clock signal line 51 and the second clock signal line 52 are used as input signal lines to be connected to each first GOA circuit 55 for The first GOA circuit 55 inputs a clock signal.
- the timings of the third clock signal line 53 and the fourth clock signal line 54 are reversed, and the third clock signal line 53 and the fourth clock signal line 54 are used as input signal lines to be connected to each second GOA circuit 56 for connecting to each second GOA circuit.
- the GOA circuit 56 inputs a clock signal.
- the GOA unit 5 since the GOA unit 5 is connected to the output terminal of the IC chip, the specific connection form is: the first clock signal line 51 is connected to the first clock port of the IC chip output terminal, and the second clock signal line 52 is connected to the first clock port of the IC chip output terminal.
- the second clock port is connected, the third clock signal line 53 is connected to the third clock port of the output end of the IC chip, and the fourth clock signal line 54 is connected to the fourth clock port of the output end of the IC chip; the first GOA circuit corresponding to the odd row gate line 2 55.
- the second GOA circuits 56 corresponding to the even rows of gate lines 2 are respectively connected to different driving ports of the output terminals of the IC chip.
- the adjacent first GOA circuits 55 are connected to each other and form a stage transmission of odd rows of gate lines 2
- the adjacent second GOA circuits 56 are connected to each other and form a stage transmission of even-numbered rows of gate lines 2;
- the output terminal of the first GOA circuit 55 of each stage is connected to the input terminal of the first GOA circuit 55 of the next next stage; except for the last stage In addition to the second GOA circuit 56, the output terminal of the second GOA circuit 56 of each stage is connected to the input terminal of the second GOA circuit 56 of the adjacent next stage.
- the connection between the first GOA circuit 55 of the previous stage and the first GOA circuit 55 of the subsequent stage is realized, and then A stage pass of odd-numbered rows of gate lines 2 is formed.
- the connection between the second GOA circuit 56 of the previous stage and the second GOA circuit 56 of the subsequent stage is realized. Connect, and then form the even-numbered row of the gate line 2 level transmission.
- the output terminal of the first GOA circuit 55 connected to the gate line 2 of the first row is connected to the input terminal of the first GOA circuit 55 connected to the gate line 2 of the third row, and the first GOA circuit 55 connected to the gate line 2 of the third row is connected.
- the output terminal of the GOA circuit 55 is connected to the input terminal of the first GOA circuit 55 connected to the fifth row of gate lines 2; the output terminal of the second GOA circuit 56 connected to the second row of gate lines 2 is connected to the fourth row of gate lines 2
- the input end of the connected second GOA circuit 56 is connected, and the output end of the second GOA circuit 56 connected to the fourth row of gate lines 2 is connected to the input end of the second GOA circuit 56 connected to the sixth row of gate lines 2.
- the odd-numbered row-level transmission can be made to correspond to the first clock signal line and the second clock signal line
- the even-numbered row-level transmission corresponds to the third clock signal line and the fourth clock signal.
- the miswriting of data signals of different colors caused by time delay can be improved, thereby improving the color shift of the panel.
- the pixel array shown in FIG. 2 is a minimum driving unit, and a plurality of minimum driving units can be combined into a driving circuit corresponding to the display panel. For example, for the display panel corresponding to 1080 columns and 2400 rows of pixel circuits, 270 minimum drive units are required in the column direction and 600 minimum drive units are required in the row direction.
- the waveform corresponding to the first clock signal line (CK1) is the superposition of the waveform of the first grid line (the first row of grid lines) and the inverse waveform of the third grid line (the third row of grid lines)
- the second clock signal line (XCK1) has the opposite waveform to the first clock signal line
- the waveform corresponding to the third clock signal line (CK2) is the waveform of the second gate line (the second row of gate lines) and the first The waveform generated by superimposing the inverse waveforms of the four gate lines (the fourth row of gate lines).
- the fourth clock signal line (XCK2) and the third clock signal line have opposite waveforms
- the third clock signal line (CK2) is opposite to the first The clock signal line (CK1) is delayed by half a pulse.
- the second GOA circuit corresponding to the even-numbered row gate line 2 is provided for the adjacent odd-numbered row gate line 2 and even-numbered row gate line 2
- the clock signal of 56 is delayed by half a pulse of the clock signal of the first GOA circuit 55 corresponding to the odd-numbered row gate line 2, and can be coordinated with the data line 3 to realize that in a continuous period of time, the pixel circuit 1 corresponding to each column can be controlled
- the pixel circuits 1 of the same color sub-pixels work in sequence according to the pulse signal.
- the data line 3 includes a first type data line 31, a second type data line 32, and a third type data line 33;
- Each column of pixel circuits 1 is a circuit group, the circuit group corresponding to the same color sub-pixels is the first circuit group, and the circuit group corresponding to the two color sub-pixels is the second circuit group;
- the first type data line 31 is connected to the pixel circuit 1 corresponding to the first color sub-pixel in the second circuit group, and the second type data line 32 corresponds to the second color in the second circuit group
- the pixel circuit 1 of the sub-pixel is connected; the third type data line 33 is connected to the pixel circuit 1 in the first circuit group.
- the data lines 3 arranged along the second direction correspond to three types, and each type of data line 3 can be respectively connected to the corresponding pixel circuit 1 and control the working state of the pixel circuit 1.
- a circuit group can be formed for each column of pixel circuits 1, and the circuit group can be determined as two different types of circuit groups according to different sub-pixels corresponding to the circuit group. If the pixel circuits 1 in the circuit group correspond to the same color sub-pixels, the circuit group is the first circuit group, and if the pixel circuits 1 in the circuit group correspond to two color sub-pixels, the circuit group is the second circuit group.
- the data line 3 it is determined that the data line 3 connected to the pixel circuit 1 in the first circuit group is the third type data line 33, and the data line 3 connected to the pixel circuit 1 corresponding to the first color sub-pixel in the second circuit group is determined.
- the data line 3 is a first type data line 31, and it is determined that the data line 3 connected to the pixel circuit 1 corresponding to the second color sub-pixel in the second circuit group is the second type data line 32.
- the pixel circuit 1 in the first circuit group corresponds to the green sub-pixel
- the first color sub-pixel can be red or blue sub-pixel
- the corresponding second-color sub-pixel can be blue or Red sub pixel.
- the sum of the number of the first type data line 31, the second type data line 32, and the third type data line 33 is determined by
- the pixel circuit 1 corresponds to twice the number of columns; the first type data line 31, the second type data line 32, the two third type data lines 33, and the second type data line 32.
- the first type data line 31 and the two third type data lines 33 are sequentially arranged in the second direction; wherein, each third type data line 33 is connected to the first circuit group Half of the pixel circuits 1 are connected, and at least two of the pixel circuits 1 connected to one third-type data line 33 are arranged adjacently or spaced apart.
- the two data lines 3 are respectively a first type data line 31 and a second type data line 32 ;
- the two data lines 3 are the third type data lines 33. Therefore, the sum of the numbers of the first type data lines 31, the second type data lines 32, and the third type data lines 33 is twice the number of circuit groups.
- the first type data line 31, the second type data line 32, the two third type data lines 33, the second type data line 32, the first type data line 31, and the two third type data lines 33 are in the second direction Arranged on top.
- the data lines D1, D1-1, D2, D2-1, D3, D3-1, D4, and D4-1 are arranged in sequence in the second direction.
- the pixel circuit 1 corresponding to the R (red) sub-pixel in the first column of pixel circuits 1 is driven by D1 (first type data line), and the pixel circuit 1 corresponding to the B (blue) sub-pixel in the first column of pixel circuits 1 Driven by D1-1 (the second type data line); similarly, the pixel circuit 1 corresponding to the B sub-pixel in the third column of pixel circuit 1 is driven by D3 (the second type data line), and the third column of pixel circuit 1 and
- the pixel circuit 1 corresponding to the R sub-pixel is driven by D3-1 (first type data line); the pixel circuit 1 corresponding to the G (green) sub-pixel in the second column of pixel circuit 1 also uses odd rows and even rows with D2 ( The third type data line) and D2-1 (the third type data line) are driven, and the driving mode
- each third type data line 33 is connected to half of the pixel circuits 1 in the first circuit group, and may be connected to adjacent or spaced pixel circuits 1. Since there are at least four pixel circuits 1 in the first circuit group, at least two pixel circuits 1 connected to one third-type data line 33 may be arranged adjacently or spaced apart. Shown in FIG. 2 is an example in which one third-type data line 33 is connected to two spaced apart pixel circuits 1.
- the demultiplexer circuit 4 includes:
- the first driving line 41 and the second driving line 42 are connected to the output terminal of the IC chip;
- the first type data line 31 and one of the third type data lines 33 in each of the first circuit groups correspond to the first switch 43, the second type data line 32 and each of the first circuit groups
- the other third type data line 33 in the circuit group corresponds to the second switch 44;
- the control end of the first switch 43 is connected to the first drive line 41, and is used to connect the first type data line 31 and the corresponding port data line, half of all data lines under the control of the first drive line 41.
- the control end of the second switch 44 is connected to the second drive line 42 for connecting the second type data line 32 and the corresponding port data line, and the remaining half of the data line under the control of the second drive line 42
- each of the port data lines is connected to the output terminal of the IC chip.
- the first driving line 41 and the second driving line 42 included in the demultiplexer circuit 4 are respectively connected to different driving ports of the output terminal of the IC chip, and the timings of the first driving line 41 and the second driving line 42 are opposite.
- the first driving line 41 is used to connect the first switch 43 to control the on or off of the first switch 43.
- the first switch 43 is connected to the first type data line 31 and a third type data line in each first circuit group.
- the second drive line 44 is used to connect the second switch 44 to control the on or off of the second switch 44.
- the second switch 44 is connected to the second type data line 32 and the other one in each first circuit group.
- the three types of data lines 33 correspond.
- the first switch 43 and the second switch 44 are TFT switches, the control pole of the first switch 43 is connected to the first drive line 41, and the control pole of the second switch 44 is connected to the second drive line 42. Under the control of the first drive line 41, each first switch 43 is closed. At this time, the first type data line 31 is connected to the corresponding port data line, and half of the third type data line 33 is connected to the corresponding port data line. The type data line 31 and half of the third type data line 33 can obtain data signals output by the IC chip. Under the control of the second drive line 42, each second switch 44 is closed. At this time, the second type data line 32 is connected to the corresponding port data line, and the remaining half of the third type data line 33 is connected to the corresponding port data line. The second type data line 32 and the remaining half of the third type data line 33 can obtain data signals output by the IC chip.
- the number of port data lines is the same as the number of columns of the pixel circuit 1
- the two first type data lines 31 can be connected to the corresponding data port of the IC chip output terminal through the same port data line
- the two second type data lines 32 can pass through
- the same port data line is connected to the corresponding data port of the IC chip output end
- two non-adjacent third type data lines 33 can be connected to the corresponding data port of the IC chip output end through the same port data line.
- the data lines D3-1 and data Line D1 can be connected to the IC chip output terminal through the port data line data1
- the data line D1-1 and data line D3 are connected to the IC chip output terminal through the port data line data3
- the data line D4-1 and data line D2 are through the port data line data2 Connected to the output terminal of the IC chip
- the data line D2-1 and the data line D4 are connected to the output terminal of the IC chip through the port data line data4.
- the connection of the third type data line 33 to the first switch 43 and the second switch 44 may be the same or different.
- the different situations are illustrated in FIG. 2.
- the third type data line 33 on the left side of the two first circuit groups are both connected to the first switch 43 or the second switch 44.
- it may be the second column pixel circuit 1 shown in FIG.
- the third-type data line 33 on the left is connected to the second switch 44, and the third-type data line 33 on the left of the fourth column of pixel circuits 1 is connected to the first switch 43.
- Other situations are also possible, which will not be listed here.
- the pixel circuit 1 connected to the second type data line 32 is in an operating state within the operating pulse corresponding to each gate line 2,
- the pixel circuit 1 connected to the third type data line 33 corresponding to the second switch 44 is in an operating state.
- the first switch 43 and the second switch 44 are controlled at a low potential. Down conduction.
- the first drive line 41 is at a low level to control the first switch 43 to be turned on.
- the pixel circuit 1 corresponding to the sub-pixel and the pixel circuit 1 corresponding to the G5 (position in the first row and fourth column) sub-pixel operate.
- the second half of the pulse corresponding to the gate line 2 in the first row the second drive line 42 is at a low level to control the second switch 44 to turn on, which corresponds to the sub-pixel G1 (the position in the first row and the second column)
- the pixel circuit 1, and the pixel circuit 1 corresponding to the sub-pixel of B3 works.
- the second drive line 42 is at a low level to control the second switch 44 to turn on.
- the pixel circuit 1 corresponding to the sub-pixel and the pixel circuit 1 corresponding to the sub-pixel G6 operate.
- the first drive line 41 is at a low level to control the first switch 43 to turn on, which corresponds to the G2 (the position in the second row and the second column) sub-pixel
- the pixel circuit 1, and the pixel circuit 1 corresponding to the sub-pixel of R3 (the position of the second row and the third column) works.
- the first drive line 41 is low level to control the first switch 43 to turn on.
- the pixel circuit 1 corresponding to the sub-pixel and the pixel circuit 1 corresponding to the G7 (position in the third row and fourth column) sub-pixel operate.
- the second drive line 42 is at a low level to control the second switch 44 to turn on, which corresponds to the G3 (the position in the third row and the second column) sub-pixel
- the pixel circuit 1, and the pixel circuit 1 corresponding to the sub-pixel of B4 (the position of the third row and the third column) works.
- the second drive line 42 is low level to control the second switch 44 to turn on. At this time, it is connected with B2 (the fourth row and first column). Position)
- the pixel circuit 1 corresponding to the sub-pixel and the pixel circuit 1 corresponding to the G8 (position in the fourth row and fourth column) sub-pixel operate.
- the first drive line 41 is at a low level to control the first switch 43 to turn on, which corresponds to the G4 (the position in the fourth row and the second column) sub-pixel
- the pixel circuit 1, and the pixel circuit 1 corresponding to the sub-pixel of R4 (the position of the fourth row and the third column) works.
- the corresponding organic light emitting diode can be controlled to emit light through the operation of the pixel circuit 1.
- An embodiment of the present application also provides a display panel including the above-mentioned pixel driving circuit.
- FIG. 5 is a schematic diagram of the hardware structure of an electronic device implementing various embodiments of the present application.
- the electronic device 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, and a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, and a power supply 511 and other components.
- the structure of the electronic device shown in FIG. 5 does not constitute a limitation on the electronic device.
- the electronic device may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. Layout.
- electronic devices include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.
- the radio frequency unit 501 can be used for receiving and sending signals during information transmission or communication. Specifically, the downlink data from the base station is received and processed by the processor 510; in addition, Uplink data is sent to the base station.
- the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
- the radio frequency unit 501 can also communicate with the network and other devices through a wireless communication system.
- the electronic device provides users with wireless broadband Internet access through the network module 502, such as helping users to send and receive emails, browse web pages, and access streaming media.
- the audio output unit 503 can convert the audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output it as sound. Moreover, the audio output unit 503 may also provide audio output related to a specific function performed by the electronic device 500 (for example, call signal reception sound, message reception sound, etc.).
- the audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.
- the input unit 504 is used to receive audio or video signals.
- the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042.
- the graphics processor 5041 is configured to monitor images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
- the processed image frame may be displayed on the display unit 506.
- the image frame processed by the graphics processor 5041 may be stored in the memory 509 (or other storage medium) or sent via the radio frequency unit 501 or the network module 502.
- the microphone 5042 can receive sound, and can process such sound into audio data.
- the processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 501 for output in the case of a telephone call mode.
- the electronic device 500 further includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors.
- the light sensor includes an ambient light sensor and a proximity sensor.
- the ambient light sensor can adjust the brightness of the display panel 5061 according to the brightness of the ambient light.
- the proximity sensor can close the display panel 5061 and the display panel 5061 when the electronic device 500 is moved to the ear. / Or backlight.
- the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of electronic devices (such as horizontal and vertical screen switching, related games) , Magnetometer posture calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 505 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be repeated here.
- the display unit 506 is used to display information input by the user or information provided to the user.
- the display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), and the like.
- LCD liquid crystal display
- OLED organic light-emitting diode
- the display panel 5061 includes a pixel driving circuit, and the pixel driving circuit includes:
- At least four gate lines are arranged along the first direction of the pixel array, a row of pixel circuits is arranged between two adjacent gate lines, and each row of pixel circuits corresponds to one gate line;
- At least eight data lines arranged along a second direction perpendicular to the first direction and intersecting each gate line, each data line being connected to a pixel circuit corresponding to the same color sub-pixel in a column of pixel circuits; and to the data line
- the connected demultiplexer circuit the demultiplexer circuit is used to control the data line to communicate with the integrated circuit IC chip.
- the pixel driving circuit further includes:
- the array substrate row connected to the output terminal of the IC chip drives the GOA unit;
- the GOA unit includes a first clock signal line, a second clock signal line, a third clock signal line, a fourth clock signal line, a plurality of first GOA circuits connected to odd-numbered row gate lines, and a plurality of even-numbered row gate lines.
- the second GOA circuit ;
- the first GOA circuit is connected to the first clock signal line and the second clock signal line, and the second GOA circuit is connected to the third clock signal line and the fourth clock signal line;
- the first clock signal line and the second clock signal line have opposite timings
- the third clock signal line and the fourth clock signal line have opposite timings.
- each adjacent first GOA circuit is connected to form an odd-numbered row of gate lines
- each adjacent second GOA circuit is connected to form an even-numbered row of gate lines. ⁇ ;
- the output terminal of the first GOA circuit of each stage is connected to the input terminal of the first GOA circuit of the next next stage; except for the second GOA circuit of the last stage, each stage The output terminal of the second GOA circuit is connected to the input terminal of the next second GOA circuit of the next stage.
- the clock signal of the second GOA circuit corresponding to the even-numbered gate lines is delayed.
- the second half of the pulse is delayed.
- the data line includes a first type data line, a second type data line, and a third type data line;
- Each column of pixel circuits is a circuit group, the circuit group corresponding to the same color sub-pixels is the first circuit group, and the circuit group corresponding to the two color sub-pixels is the second circuit group;
- the data line of the first type is connected to the pixel circuit corresponding to the sub-pixel of the first color in the second circuit group, and the data line of the second type is connected to the pixel circuit corresponding to the sub-pixel of the second color in the second circuit group;
- the third type data line is connected to the pixel circuit in the first circuit group.
- the sum of the numbers of the first type data line, the second type data line, and the third type data line is twice the number of columns corresponding to the pixel circuit;
- the first type data line, the second type data line, the two third type data lines, the second type data line, the first type data line, and the two third type data lines are sequentially arranged in the second direction;
- each third type data line is connected to half of the pixel circuits in the first circuit group, and at least two pixel circuits connected to one third type data line are arranged adjacently or spaced apart.
- the demultiplexer circuit includes:
- a first drive line a second drive line whose timing is opposite to that of the first drive line, at least four first switches, and at least four second switches;
- the first driving line and the second driving line are connected to the output terminal of the IC chip;
- the first type data line and one third type data line in each first circuit group correspond to the first switch, and the second type data line and the other third type data line in each first circuit group correspond to the second switch ;
- the control terminal of the first switch is connected to the first drive line, and is used to connect the first type data line and the corresponding port data line, half of the third type data line and the corresponding port data line under the control of the first drive line;
- the control terminal of the second switch is connected to the second drive line, and is used to connect the second type data line and the corresponding port data line, and the remaining half of the third type data line and the corresponding port data line under the control of the second drive line;
- each port data line is connected to the output terminal of the integrated circuit.
- the pixel circuit connected to the first type data line is in the working state, and the third switch corresponding to the first switch is in the working state.
- the pixel circuit connected to the type data line is in working state;
- the pixel circuit connected to the second type data line is in working state, and is connected to the third type data line corresponding to the second switch The pixel circuit is in working condition.
- the user input unit 507 can be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the electronic device.
- the user input unit 507 includes a touch panel 5071 and other input devices 5072.
- the touch panel 5071 also known as a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 5071 or near the touch panel 5071. operate).
- the touch panel 5071 may include two parts: a touch detection device and a touch controller.
- the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 510, the command sent by the processor 510 is received and executed.
- the touch panel 5071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
- the user input unit 507 may also include other input devices 5072.
- other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
- the touch panel 5071 can be overlaid on the display panel 5061.
- the touch panel 5071 detects a touch operation on or near it, it is transmitted to the processor 510 to determine the type of touch event, and then the processor 510 determines the type of the touch event according to the touch.
- the type of event provides corresponding visual output on the display panel 5061.
- the touch panel 5071 and the display panel 5061 are used as two independent components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 5071 and the display panel 5061 can be integrated
- the implementation of the input and output functions of the electronic device is not specifically limited here.
- the interface unit 508 is an interface for connecting an external device and the electronic device 500.
- the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
- the interface unit 508 can be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the electronic device 500 or can be used to connect the electronic device 500 to an external device. Transfer data between devices.
- the memory 509 can be used to store software programs and various data.
- the memory 509 may mainly include a storage program area and a storage data area.
- the storage program area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
- the memory 509 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
- the processor 510 is the control center of the electronic device. It uses various interfaces and lines to connect the various parts of the entire electronic device, runs or executes software programs and/or modules stored in the memory 509, and calls data stored in the memory 509 , Perform various functions of electronic equipment and process data, so as to monitor the electronic equipment as a whole.
- the processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem The processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 510.
- the electronic device 500 may also include a power source 511 (such as a battery) for supplying power to various components.
- a power source 511 such as a battery
- the power source 511 may be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.
- the electronic device 500 includes some functional modules not shown, which will not be repeated here.
- the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.
- a terminal which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.
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Abstract
Description
Claims (10)
- 一种像素驱动电路,包括:包括多个像素电路(1)的像素阵列,所述像素阵列采用RGBG像素排列方式;沿所述像素阵列的第一方向排列的至少四条栅线(2),相邻两条栅线(2)之间设置一行像素电路(1),每行像素电路(1)对应一条栅线(2);沿与所述第一方向垂直的第二方向排列、且与每条栅线(2)交叉设置的至少八条数据线(3),每条数据线(3)与一列像素电路(1)中对应于同一颜色子像素的所述像素电路(1)连接;以及与所述数据线(3)连接的多路分配器电路(4),所述多路分配器电路(4)用于控制所述数据线(3)连通集成电路IC芯片。
- 根据权利要求1所述的像素驱动电路,还包括:与所述IC芯片的输出端连接的阵列基板行驱动GOA单元(5);所述GOA单元(5)包括第一时钟信号线(51)、第二时钟信号线(52)、第三时钟信号线(53)、第四时钟信号线(54)以及与奇数行栅线(2)连接的多个第一GOA电路(55)和与偶数行栅线(2)连接的多个第二GOA电路(56);所述第一GOA电路(55)连接所述第一时钟信号线(51)和所述第二时钟信号线(52),所述第二GOA电路(56)连接所述第三时钟信号线(53)和所述第四时钟信号线(54);所述第一时钟信号线(51)和所述第二时钟信号线(52)的时序相反,所述第三时钟信号线(53)和所述第四时钟信号线(54)的时序相反。
- 根据权利要求2所述的像素驱动电路,其中,按照行数递增的排列顺序,各相邻的所述第一GOA电路(55)之间连接且形成奇数行栅线(2)的级传、各相邻的所述第二GOA电路(56)之间连接且形成偶数行栅线(2)的级传;其中,除最后一级所述第一GOA电路(55)外,每一级所述第一GOA电路(55)的输出端与相邻下一级所述第一GOA电路(55)的输入端连接; 除最后一级所述第二GOA电路(56)外,每一级所述第二GOA电路(56)的输出端与相邻下一级所述第二GOA电路(56)的输入端连接。
- 根据权利要求3所述的像素驱动电路,其中,对于相邻的奇数行栅线(2)和偶数行栅线(2),其中,相对于奇数行栅线(2)对应的第一GOA电路(55)的时钟信号,偶数行栅线(2)对应的第二GOA电路(56)的时钟信号延后半个脉冲。
- 根据权利要求4所述的像素驱动电路,其中,所述数据线(3)包括第一类型数据线(31)、第二类型数据线(32)和第三类型数据线(33);每列像素电路(1)为一电路组,对应相同颜色子像素的所述电路组为第一电路组,对应两个颜色子像素的所述电路组为第二电路组;所述第一类型数据线(31)与所述第二电路组中对应第一颜色子像素的像素电路(1)连接,所述第二类型数据线(32)与所述第二电路组中对应第二颜色子像素的像素电路(1)连接;所述第三类型数据线(33)与所述第一电路组中的所述像素电路(1)连接。
- 根据权利要求5所述的像素驱动电路,其中,所述第一类型数据线(31)、所述第二类型数据线(32)和所述第三类型数据线(33)的数量之和为所述像素电路(1)所对应的列数的两倍;所述第一类型数据线(31)、所述第二类型数据线(32)、两条所述第三类型数据线(33)、所述第二类型数据线(32)、所述第一类型数据线(31)和两条所述第三类型数据线(33)在所述第二方向上依次排列;其中,每条所述第三类型数据线(33)与所述第一电路组中半数的所述像素电路(1)连接,且与一条所述第三类型数据线(33)连接的至少两个所述像素电路(1)相邻或者间隔排布。
- 根据权利要求6所述的像素驱动电路,其中,所述多路分配器电路(4)包括:第一驱动线(41)、与所述第一驱动线(41)时序相反的第二驱动线(42)、至少四个第一开关(43)和至少四个第二开关(44);所述第一驱动线(41)和所述第二驱动线(42)与所述IC芯片的输出端 连接;所述第一类型数据线(31)和各所述第一电路组中的一条所述第三类型数据线(33)对应于所述第一开关(43),所述第二类型数据线(32)和各所述第一电路组中的另一条所述第三类型数据线(33)对应于所述第二开关(44);所述第一开关(43)的控制端连接所述第一驱动线(41),用于在所述第一驱动线(41)的控制下连通所述第一类型数据线(31)和对应的端口数据线、半数的所述第三类型数据线(33)和对应的端口数据线;所述第二开关(44)的控制端连接所述第二驱动线(42),用于在所述第二驱动线(42)的控制下连通所述第二类型数据线(32)和对应的端口数据线、剩余半数的所述第三类型数据线(33)和对应的端口数据线;其中,各所述端口数据线连接至所述IC芯片的输出端。
- 根据权利要求7所述的像素驱动电路,其中,在所述第一驱动线(41)控制所述第一开关(43)导通时,在各栅线(2)对应的工作脉冲内,与所述第一类型数据线(31)连接的所述像素电路(1)处于工作状态、与对应于所述第一开关(43)的所述第三类型数据线(33)连接的所述像素电路(1)处于工作状态;在所述第二驱动线(42)控制所述第二开关(44)导通时,在各栅线(2)对应的工作脉冲内,与所述第二类型数据线(32)连接的所述像素电路(1)处于工作状态、与对应于所述第二开关(44)的所述第三类型数据线(33)连接的所述像素电路(1)处于工作状态。
- 一种显示面板,包括如权利要求1至8任一项所述的像素驱动电路。
- 一种电子设备,包括如权利要求9所述的显示面板。
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| JP2022557878A JP7489482B2 (ja) | 2020-03-24 | 2021-03-19 | 画素駆動回路、表示パネル及び電子機器 |
| KR1020227036597A KR102718977B1 (ko) | 2020-03-24 | 2021-03-19 | 픽셀 구동 회로, 디스플레이 패널 및 전자 장치 |
| US17/951,198 US11961472B2 (en) | 2020-03-24 | 2022-09-23 | Pixel driving circuit, display panel including a pixel driving circuit, and electronic device including a display panel |
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| CN111986606A (zh) * | 2020-08-17 | 2020-11-24 | 武汉华星光电技术有限公司 | 显示面板和显示装置 |
| CN111986607B (zh) | 2020-08-19 | 2021-12-03 | 武汉华星光电技术有限公司 | 显示面板及显示装置 |
| CN113345364A (zh) * | 2021-06-21 | 2021-09-03 | 合肥维信诺科技有限公司 | 一种显示面板和显示装置 |
| CN113674669B (zh) * | 2021-08-17 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | 显示面板 |
| CN116312311B (zh) * | 2021-12-08 | 2026-01-23 | 合肥京东方显示技术有限公司 | 显示面板的驱动方法及显示装置 |
| CN116386496A (zh) * | 2022-12-29 | 2023-07-04 | 厦门天马显示科技有限公司 | 显示面板及显示装置 |
| CN119068803B (zh) * | 2023-05-30 | 2026-04-28 | 京东方科技集团股份有限公司 | 显示基板和显示装置 |
| CN116631338B (zh) * | 2023-06-08 | 2026-02-03 | 武汉天马微电子有限公司 | 显示面板的驱动方法、显示面板和显示装置 |
| CN118645056B (zh) * | 2024-07-01 | 2025-09-23 | 京东方科技集团股份有限公司 | 显示面板、显示装置及显示面板的驱动方法 |
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| US11961472B2 (en) | 2024-04-16 |
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| US20230016926A1 (en) | 2023-01-19 |
| CN111383576A (zh) | 2020-07-07 |
| EP4131229A1 (en) | 2023-02-08 |
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