WO2024001092A1 - 显示驱动电路及显示装置 - Google Patents

显示驱动电路及显示装置 Download PDF

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WO2024001092A1
WO2024001092A1 PCT/CN2022/140790 CN2022140790W WO2024001092A1 WO 2024001092 A1 WO2024001092 A1 WO 2024001092A1 CN 2022140790 W CN2022140790 W CN 2022140790W WO 2024001092 A1 WO2024001092 A1 WO 2024001092A1
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pixel circuit
module
ratio
pixel
circuit
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PCT/CN2022/140790
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English (en)
French (fr)
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周秀峰
袁鑫
袁海江
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惠科股份有限公司
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs

Definitions

  • the present application relates to the field of display technology, and in particular to display driving circuits and display devices.
  • a display device usually needs to provide multiple pixel circuits to form a pixel circuit array corresponding to a display screen, and the multiple pixel circuits are usually provided with pixel circuits of various luminous efficiencies, such as Red light pixel circuits, green light pixel circuits and blue light pixel circuits that emit red light, among which pixel circuits with lower luminous efficiency (such as blue pixel circuits) and pixel circuits with higher luminous efficiency (such as red pixel circuits or green light pixel circuits) Pixel circuit) When the current is the same, the brightness of the light emitted by the pixel circuit with lower luminous efficiency is smaller than the brightness of the light emitted by the pixel circuit with higher luminous efficiency.
  • a defect of the existing technology is that when multiple pixel circuits share the voltage provided by the same common line, since the resistance of each pixel circuit itself is the same or similar, the pixel circuit with lower luminous efficiency will not be the same as the pixel with higher luminous efficiency.
  • the currents of the circuits are the same or similar, which easily causes the brightness of the light emitted by the pixel circuit with lower luminous efficiency among the multiple pixel circuits to be smaller than the brightness of the light emitted by the pixel circuit with higher luminous efficiency, resulting in different luminous efficiencies in the display device.
  • the brightness of the light emitted by the pixel circuit is inconsistent, which reduces the uniformity of the display screen of the display device and makes the display effect of the display device poor.
  • the main technical problem solved by this application is how to improve the display effect of the display device.
  • the first technical solution adopted in this application is: a display driving circuit, including a plurality of pixel circuits; the data end of each pixel circuit is connected to a corresponding data line, and the data line is used to provide a data signal ; The gate terminal of each pixel circuit is connected to the corresponding gate line, and the gate line is used to provide the gate signal; the power terminals of multiple pixel circuits are connected to the same power supply common line; the multiple pixel circuits are divided into at least A first pixel circuit and at least one second pixel circuit, the luminous efficiency of the first pixel circuit is less than the luminous efficiency of the second pixel circuit, and the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the first pixel circuit is greater than The width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the second pixel circuit.
  • the ratio between the width to length ratio of the channel of the thin film field effect transistor in the driving module of the first pixel circuit and the width to length ratio of the channel of the thin film field effect transistor in the driving module of the second pixel circuit is as the first Ratio
  • the ratio between the current when the first pixel circuit emits light with a preset brightness and the current when the second pixel circuit emits light with the same preset brightness serves as the second ratio
  • the first ratio has a positive correlation with the second ratio.
  • the power line is a connection line between the power terminal of the corresponding pixel unit and the power common line
  • the plurality of pixel circuits include at least two first pixel circuits, and the luminous efficiency of each pixel circuit in the at least two first pixel circuits is the same.
  • At least two first pixel circuits are divided into at least one first type pixel circuit and at least one second type pixel circuit, the length of the power supply line of the first type pixel circuit is greater than the length of the power supply line of the second type pixel circuit, and The width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the first type of pixel circuit is greater than the width to length ratio of the channel of the thin film field effect transistor in the driving module of the second type of pixel circuit.
  • the ratio between the length of the power supply line of the first type pixel circuit and the length of the power supply line of the second type pixel circuit is used as the third ratio
  • the channel of the thin film field effect transistor in the driving module of the first type pixel circuit is The ratio between the width-to-length ratio and the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the second type pixel circuit serves as the fourth ratio
  • the third ratio has a positive correlation with the fourth ratio.
  • the third ratio is equal to the fourth ratio.
  • the first pixel circuit is a blue pixel circuit
  • the second pixel circuit is a red pixel circuit or a green pixel circuit.
  • the luminous efficiency of the pixel circuit is related to the light-emitting semiconductor material in the pixel circuit.
  • the number of multiple pixel circuits is greater than 2 and not greater than the shared quantity.
  • the shared quantity is a value determined based on the shared quantity calculation formula; the shared quantity calculation formula is:
  • n 1 is the shared number
  • H 1 is a preset constant
  • k is the characteristic parameter of the thin film field effect transistor of the pixel circuit
  • I is the current in the pixel circuit
  • R 1 is the gap between adjacent pixel circuits in multiple pixel circuits.
  • the resistance of the power line ⁇ is the mobility of the thin film field effect transistor
  • W is the channel width of the thin film field effect transistor
  • L is the channel length of the thin film field effect transistor
  • C is the structural capacitance of the thin film field effect transistor.
  • the second technical solution adopted by this application is: a display device including a light-emitting display module and the above-mentioned display driving circuit.
  • the beneficial effect of this application is that: different from the prior art, the technical solution of this application uses the channel of the thin film field effect transistor in the first pixel circuit with lower luminous efficiency among multiple pixel circuits that share the same power supply common line.
  • the width-to-length ratio is greater than the width-to-length ratio of the channel of the thin film field effect transistor in the second pixel circuit with higher luminous efficiency, so that when the voltage is the same, the corresponding current of the first pixel circuit is greater than that of the second pixel circuit
  • the corresponding current reduces the brightness difference between the light emitted by the first pixel circuit and the light emitted by the second pixel circuit, improves the uniformity of the display screen of the display device, and thereby improves the display effect of the display device.
  • Figure 1 is one of the structural schematic diagrams of an embodiment of the display driving circuit of the present application:
  • Figure 2 is the second structural schematic diagram of an embodiment of the display driving circuit of the present application.
  • Figure 3 is the third structural schematic diagram of an embodiment of the display driving circuit of the present application.
  • Figure 4 is the fourth structural schematic diagram of an embodiment of the display driving circuit of the present application.
  • Figure 5 is a fifth structural schematic diagram of an embodiment of the display driving circuit of the present application.
  • Figure 6 is a sixth structural schematic diagram of an embodiment of the display driving circuit of the present application.
  • Figure 7 is a schematic structural diagram of an embodiment of the pixel circuit of the present application.
  • FIG. 8 is a schematic structural diagram of an embodiment of the display device of the present application.
  • Display driving circuit 10 pixel circuit 11, first pixel circuit 111, first type pixel circuit 1111, second type pixel circuit 1112, second pixel circuit 112, first light emitting control module 21, driving module 22,
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • the above-mentioned specific meanings in this application can be connected in specific situations.
  • the display driving circuit in this application may include multiple pixel circuits composed of multiple "2T1C pixel circuits".
  • the display driving circuit 10 includes a plurality of pixel circuits 11.
  • One pixel circuit 11 includes two thin film field effect transistors and a capacitor.
  • the power terminals of the plurality of pixel circuits 11 are all connected to the same common power line (VDD), and each pixel circuit 11 is also connected to the negative power line (VSS), the data line (DATA) and the gate line (GATE) respectively.
  • VDD common power line
  • VSS negative power line
  • DATA data line
  • GATE gate line
  • the pixel circuit in the display driving circuit of the present application can also be other types of pixel circuits besides the "2T1C pixel circuit". The details can be determined according to actual needs and are not limited here.
  • Figure 2 is a second structural schematic diagram of an embodiment of the display driving circuit of this application.
  • the display driving circuit 10 includes a plurality of pixel circuits 11 .
  • the data terminal of each pixel circuit is connected to the corresponding data line (DATA), the data line is used to provide a data signal, and the gate terminal of each pixel circuit is connected to the corresponding gate line (GATE).
  • the gate line is used to provide the gate signal.
  • the ground terminal of each pixel circuit is connected to the corresponding negative power supply line (VSS).
  • the negative power supply line is used to provide the negative signal.
  • each pixel circuit 11 in the plurality of pixel circuits 11 is connected to the same power supply common line (VDD), and the connection line between the power supply end of the corresponding pixel circuit and the power supply common line is recorded as the corresponding pixel circuit. Power lines.
  • the plurality of pixel circuits 11 can be divided into at least one first pixel circuit 111 and at least one second pixel circuit 112 according to the level of luminous efficiency, wherein the luminous efficiency of the first pixel circuit 111 is smaller than that of the second pixel.
  • the luminous efficiency of the circuit 112, that is, when the same current is supplied, the brightness displayed by the first pixel circuit 111 under the current is smaller than the brightness displayed by the second pixel circuit 112 under the current.
  • the width-to-length ratio of the channel of the thin film field effect transistor in the first pixel circuit 111 is greater than the width to length ratio of the channel of the thin film field effect transistor in the second pixel circuit 112 .
  • I is the current of the corresponding pixel circuit, is the width-to-length ratio of the channel of the thin film field effect transistor in the corresponding pixel circuit
  • ⁇ is the mobility of the thin film field effect transistor in the corresponding pixel circuit
  • C is the structural capacitance of the thin film field effect transistor in the corresponding pixel circuit
  • V GS is the voltage between the gate and drain of the thin film field effect transistor in the corresponding pixel circuit
  • V TH is the minimum turn-on voltage of the thin film field effect transistor in the corresponding pixel circuit.
  • the structural capacitance is the capacitance value of the capacitance composed of the metal layer, the insulating layer and the active layer of the thin film field effect transistor in the corresponding pixel circuit.
  • Equation (1) when other parameters remain unchanged, the greater the width-to-length ratio of the channel of the thin film field effect transistor in the corresponding pixel circuit, the greater the current of the corresponding pixel circuit. Therefore, based on the above method, when the power supply line of the first pixel circuit 111 receives the same voltage as the second pixel circuit 112, the current of the first pixel circuit 111 can be made larger than that of the second pixel circuit 112, thereby making the second pixel circuit 111 have a higher current. The difference between the brightness displayed by one pixel circuit 111 under the corresponding current and the brightness displayed by the second pixel circuit 112 under the corresponding current is reduced, that is, the size of the thin film field effect transistor can be adjusted to change the flow through the pixel. The purpose of the maximum current of the circuit or the current at the preset voltage can reduce the brightness difference between pixel circuits with different luminous efficiencies, improve the uniformity of the display screen, and thereby improve the display effect of the display device.
  • the pixel circuit 11 can be an OLED (Organic Light-Emitting Diode, organic light-emitting diode) pixel circuit or other types of pixel circuits. The details can be determined according to actual needs and are not limited here.
  • OLED Organic Light-Emitting Diode, organic light-emitting diode
  • the channel width and length of the thin film field effect transistor A in the first pixel circuit 111 with lower luminous efficiency is larger than that of the thin film field effect transistor B in the second pixel circuit 112 with higher luminous efficiency. Than bigger.
  • the technical solution of this application is to make the width-to-length ratio of the channel of the thin film field effect transistor in the first pixel circuit with lower luminous efficiency among multiple pixel circuits sharing the same power supply common line greater than the luminous efficiency.
  • a higher width-to-length ratio of the channel of the thin film field effect transistor in the second pixel circuit allows the current corresponding to the first pixel circuit to be greater than the current corresponding to the second pixel circuit under the same voltage, thereby reducing the
  • the difference in brightness between the light emitted by one pixel circuit and the light emitted by the second pixel circuit improves the uniformity of the display screen of the display device, thereby improving the display effect of the display device.
  • the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the first pixel circuit 111 is compared with the width to length ratio of the channel of the thin film field effect transistor in the driving module of the second pixel circuit 112. The ratio between them is recorded as the first ratio, and the ratio between the current when the first pixel circuit 111 emits light with the preset brightness and the current when the second pixel circuit 112 emits light with the same preset brightness is recorded as the second ratio. Proportion, the first proportion is positively related to the second proportion.
  • the current ratio of the first pixel circuit 111 and the second pixel circuit 112 can be recorded as the second ratio, and the first ratio is positively correlated with the second ratio. relation.
  • the first ratio may be within a threshold range corresponding to the second ratio
  • the value of the second ratio may be within a threshold range corresponding to the second ratio.
  • the value of the second ratio may be one of the maximum value, minimum value, median value and other arbitrary values of the threshold range corresponding to the second ratio, which is not limited here.
  • the threshold range corresponding to the second ratio is associated with the characteristics of the corresponding pixel circuit, and the characteristics may include characteristics of the thin film long field effect transistor in the pixel circuit.
  • the first ratio is equal to the second ratio.
  • the first ratio can be made equal to the second ratio, that is, the width-to-length ratio of the channel of the thin film field effect transistor in the first pixel circuit 111 is equal to the width-to-length ratio of the channel of the thin film field effect transistor in the second pixel circuit 112.
  • the ratio between the width and length ratio is equal to the ratio between the current when the first pixel circuit 111 emits light with a preset brightness and the current when the second pixel circuit 112 emits light with the same preset brightness, that is, the first
  • the power terminals of the pixel circuit 111 and the second pixel circuit 112 are both connected to the same power common line to receive the same power supply voltage, the brightness of the light emitted by the first pixel circuit 111 and the second pixel circuit 112 is the same, thereby ensuring different displays.
  • the brightness of each pixel circuit 11 in the driving circuit 10 is kept consistent, which improves the uniformity of the display screen and improves the display effect of the display device.
  • the power line is a connection line between the power terminal of the corresponding pixel unit and the power common line.
  • the plurality of pixel circuits 11 includes at least two first pixel circuits 111 .
  • Each of the at least two first pixel circuits 111 has the same luminous efficiency.
  • the at least two first pixel circuits 111 It can be divided into at least one first type pixel circuit 1111 and at least one second type pixel circuit 1112.
  • the length of the power supply line of the first type pixel circuit 1111 is greater than the length of the power supply line of the second type pixel circuit 1112.
  • I is the current of the corresponding pixel circuit
  • U is the voltage of the corresponding pixel circuit
  • R is the resistance of the power supply line of the corresponding pixel circuit
  • ⁇ is the resistivity of the power supply line of the corresponding pixel circuit
  • L is the length of the power supply line of the corresponding pixel circuit
  • S is the cross-sectional area of the power supply line of the corresponding pixel circuit.
  • the resistance corresponding to the power supply line of the first type pixel circuit 1111 with a longer length is larger, so it can be used.
  • the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the first type of pixel circuit 1111 is greater than the width to length ratio of the channel of the thin film field effect transistor in the driving module of the second type of pixel circuit 1112, so that the same reception
  • the currents of the first type pixel circuit 1111 and the second type pixel circuit 1112 of the power supply voltage provided by the power common line tend to be equal.
  • the luminous efficiency of the first type pixel circuit 1111 and the second type pixel circuit 1112 is the same, based on the above method, it can The consistency of the brightness emitted by the first type pixel circuit 1111 and the second type pixel circuit 1112 in the at least two first pixel circuits 111 is improved, thereby improving the display effect of the display device.
  • the width-to-length ratio of the channel of the thin film field effect transistor C in the driving module of the first type of pixel circuit 1111 with a longer power supply line is larger than that of the second type of pixel with a shorter length of the power supply line.
  • the channel of the thin film field effect transistor D in the driving module of the circuit 1112 has a larger width-to-length ratio.
  • the ratio between the length of the power supply line of the first type pixel circuit 1111 and the length of the power supply line of the second type pixel circuit 1112 can be used as the third ratio, and the film in the driving module of the first type pixel circuit 1111
  • the ratio between the width-to-length ratio of the channel of the field effect transistor and the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the second type pixel circuit 1112 serves as the fourth ratio, and the third ratio is positive to the fourth ratio. relationship.
  • the fourth ratio may be within a threshold range corresponding to the third ratio, and the value of the third ratio is within a threshold range corresponding to the third ratio.
  • the value of the third ratio may be one of the maximum value, minimum value, median value and other arbitrary values of the threshold range corresponding to the third ratio, which is not limited here.
  • the threshold range corresponding to the third ratio is associated with the characteristics of the corresponding pixel circuit, and the characteristics may include characteristics of the thin film long field effect transistor in the pixel circuit.
  • the distance between the pixel circuit closest to the first common line VDD (such as the second pixel circuit 112 and the second type pixel circuit 1112 ) and the first common line VDD is L0, and The distance between adjacent pixel circuits is Lp, then the length of the power supply line of the first type of pixel circuit 1111 is (Lp+L0), the length of the power supply line of the second type of pixel circuit 1112 is L0, and the third ratio is ( Lp+L0): L0, at this time, it is necessary to make the width-to-length ratio of the channel of the thin film field effect transistor in the power supply line driving module of the first type pixel circuit 1111 equal to that in the power supply line driving module of the second type pixel circuit 1112.
  • the ratio between the width and length ratio of the channel of the thin film field effect transistor, that is, the fourth ratio is also (Lp+L0):L0, so that the power supply line of the first type pixel circuit 1111 shown in FIG.
  • the power supply line resistances of the second type pixel circuits 1112 tend to be equal, thereby improving the brightness uniformity between the first type pixel circuit 1111 and the second type pixel circuit 1112 and improving the display effect of the display device.
  • the above is only an example of a display driving circuit structure.
  • the power supply The length of the line, the third ratio, and the fourth ratio may all change and are not limited here.
  • the channel of the thin film field effect transistor in the driving module of the power line of the first type pixel circuit 1111 has the largest width-to-length ratio
  • the thin film field effect transistor in the driving module of the power line of the second type pixel circuit 1112 has the largest channel width-to-length ratio.
  • the width-to-length ratio of the channel of the field-effect transistor is medium
  • the width-to-length ratio of the channel of the thin-film field-effect transistor in the driving module of the power circuit of the second pixel circuit 112 is the smallest.
  • the third ratio is equal to the fourth ratio.
  • the length of the power supply line of the first type of pixel circuit 1111 is the first length
  • the length of the power supply line of the second type of pixel circuit 1112 is the second length
  • the quotient of the second length divided by the first length is the target multiple.
  • the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the second type pixel circuit 1112 is the target multiple of the width to length ratio of the channel of the thin film field effect transistor in the driving module of the first type pixel circuit 1111 .
  • the resistance corresponding to the power supply line of the first type pixel circuit 1111 and the resistance corresponding to the power supply line of the second type pixel circuit 1112 tend to be equal, thereby making the third type of pixel circuit 1111 receive the power supply voltage provided by the same power supply common line.
  • the currents of the first type of pixel circuit 1111 and the second type of pixel circuit 1112 are equal. Since the luminous efficiency of the first type of pixel circuit 1111 and the second type of pixel circuit 1112 is the same, the above method can improve the efficiency of at least two first pixel circuits 111. The consistency of the brightness emitted by the first type of pixel circuit 1111 and the second type of pixel circuit 1112 improves the display effect of the display device.
  • the first pixel circuit 111 is a blue pixel circuit
  • the second pixel circuit 112 is a red pixel circuit or a green pixel circuit.
  • the luminous efficiency of the blue pixel circuit is usually lower than that of the red pixel circuit or the green pixel circuit, while the luminous efficiency of the red pixel circuit and the green pixel circuit are relatively similar.
  • the luminous efficiency of the pixel circuit 11 is usually related to the material of the light-emitting semiconductor in the pixel circuit 11 , and the light-emitting semiconductor may be a light-emitting diode.
  • the plurality of pixel circuits 11 include a red pixel circuit R, a green pixel circuit G, and a blue pixel circuit B.
  • the luminous efficiencies of the red pixel circuit R and the green pixel circuit G are relatively close.
  • the luminous efficiencies of the red pixel circuit R and the green pixel circuit G are equal, while the luminous efficiencies of the blue pixel circuit R and G are equal.
  • the luminous efficiency of the pixel circuit B is smaller than that of the red pixel circuit R or the green pixel circuit G.
  • the blue pixel circuit B can be used as the first pixel circuit 111 with lower luminous efficiency
  • the red pixel circuit R can be used as the first pixel circuit 111 with lower luminous efficiency.
  • the green pixel circuit G as the second pixel circuit 112 with higher luminous efficiency.
  • the width-to-length ratio of the channel of the thin film field effect transistor in the power supply circuit driving module of the blue pixel circuit B is larger than that in the power supply circuit driving module of the red pixel circuit R or the green pixel circuit G.
  • the ratio between the width and length ratio of the channel of the thin film field effect transistor in the driving module of the circuit G is used as the first ratio, and the luminous efficiency of the blue pixel circuit B is compared with the luminescence efficiency of the red pixel circuit R or the green pixel circuit G.
  • the ratio between efficiencies is used as the second ratio, then the first ratio and the second ratio can be positively correlated, and the first ratio can even be equal to the second ratio, so that the resistance of the power supply line of the blue pixel circuit B and the red pixel circuit
  • the resistances of the power supply lines of R or the green pixel circuit G are equal, so that the red pixel circuit R, the green pixel circuit G and the blue pixel circuit B can emit light after receiving the power supply voltage provided by the same first common line. Light with the same brightness improves the brightness uniformity of each pixel circuit, thereby improving the display effect of the display device.
  • the first pixel circuit 111 is a blue pixel circuit
  • the second pixel circuit 112 is a red pixel circuit.
  • the luminous efficiency of the blue pixel circuit is lower than that of the red pixel circuit.
  • the thin film field in the blue pixel circuit The width-to-length ratio of the effect transistor is greater than that of the thin film field effect transistor in the red light pixel circuit.
  • the first type of pixel circuit 1111 is a blue light pixel circuit with a long power supply line
  • the second type of pixel circuit 1112 is a blue light pixel circuit with a short power supply line.
  • the luminous efficiency of the two is equal.
  • the width-to-length ratio of the channel of the thin film field effect transistor in the driving module of the pixel circuit is greater than the width to length ratio of the channel of the thin film field effect transistor in the driving module of the blue light pixel circuit with a shorter power supply line.
  • the pixel circuit 11 includes a first light-emitting control module 21, a driving module 22, a second light-emitting control module 23, and a switch.
  • Module 24 storage module 25, initialization module 26, data writing module 27 and light emitting module 28.
  • the input end of the data writing module 27 is used to receive data signals
  • the output end of the data writing module 27 is connected to the input end of the second lighting control module 23, and the input end of the first lighting control module 21 is used to receive the power supply voltage signal.
  • the output end of a light-emitting control module 21 is connected to the input end of the driving module 22.
  • the gate of the driving module 22 is used to receive the gate signal.
  • the output end of the driving module 22 is connected to the input end of the second light-emitting control module 23.
  • the driving module 22 includes For the above-mentioned thin film field effect transistor, the output end of the second light-emitting control module 23 is connected to the input end of the light-emitting module 28.
  • the output end of the light-emitting module 28 is used to receive the ground voltage signal.
  • the input end of the initialization module 26 is used to receive the initialization signal.
  • the initialization module The first output end of 26 is connected to the input end of the storage module 25, the second output end of the initialization module 26 is connected to the input end of the light emitting module 28, the first output end of the storage module 25 is connected to the input end of the switch module 24, and the The second output terminal is connected to the driving terminal of the driving module 22 , and the output terminal of the switch module 24 is connected to the input terminal of the driving module 22 .
  • the number of the plurality of pixel circuits 11 is greater than 2 and not greater than the common number, and the common number is a value determined based on the common number calculation formula;
  • n 1 is the shared number
  • H 1 is a preset constant
  • k is the characteristic parameter of the thin film field effect transistor of the pixel circuit
  • I is the current in the pixel circuit
  • R 1 is the gap between adjacent pixel circuits in multiple pixel circuits.
  • the resistance of the power line ⁇ is the mobility of the thin film field effect transistor
  • W is the channel width of the thin film field effect transistor
  • L is the channel length of the thin film field effect transistor
  • C is the structural capacitance of the thin film field effect transistor.
  • the preset constant has a positive correlation with the current in the pixel circuit 11 and a negative correlation with the current fluctuation value between adjacent pixel circuits.
  • the current fluctuation value between adjacent pixel circuits is the current difference between adjacent pixel circuits 11 .
  • the current difference usually needs to be limited to 2%-3% of the current in the pixel circuit 11 .
  • the preset constant can also be within a preset constant range.
  • the preset constant range can be determined based on the actual operating hardware conditions and/or operating environment conditions of the display device.
  • the preset constant range can be It is 0.08-0.12, and it can also be in other ranges, which are not limited here.
  • the power lines of adjacent pixel circuits 11 connected to the same power supply common line are respectively connected to the same node, and then through the connection between the node and the power supply common line, the adjacent pixel circuits 11 are connected to the same power supply common line. Therefore, By using the resistance of the power line between adjacent pixel circuits as one of the calculation parameters of the above sharing quantity calculation formula, the relevant parameters of the display driving circuit can be considered more comprehensively, thereby obtaining the most appropriate sharing quantity and improving the display of the display device. Effect.
  • the maximum number of pixel circuits 11 sharing the same power supply common line (ie, the above-mentioned shared number) can be determined based on the relevant data between the pixel circuits 11 in the display driving circuit, and the multiple pixel circuits 11 The number does not exceed the maximum number, so that the total resistance of the connection lines between the plurality of pixel circuits 11 and the power supply common line is almost the same, which improves the resistance of each pixel circuit 11 in the plurality of pixel circuits 11.
  • the uniformity of the amplitude of the received power voltage signal improves the display effect of the display device including the display driving circuit.
  • the sharing quantity calculation formula can be used to calculate a more reasonable sharing quantity by rationally using various parameters, which can be used to limit the number of pixel circuits 11 included in the plurality of pixel circuits 11, thereby improving the display effect of the display device.
  • FIG. 8 is a schematic structural diagram of an embodiment of the display device of this application.
  • the display device 30 includes a light-emitting display module 31 and a display driving circuit 32.
  • the display driving circuit 32 can be Any display driving circuit 10 in the previous embodiments will not be described again here.
  • the display device may be a vehicle-mounted display device, a television, a mobile terminal display, or other types of display devices, which are not limited here.
  • the technical solution of this application is to make the width-to-length ratio of the channel of the thin film field effect transistor in the first pixel circuit with lower luminous efficiency among multiple pixel circuits sharing the same power supply common line greater than the luminous efficiency.
  • a higher width-to-length ratio of the channel of the thin film field effect transistor in the second pixel circuit allows the current corresponding to the first pixel circuit to be greater than the current corresponding to the second pixel circuit under the same voltage, thereby reducing the
  • the difference in brightness between the light emitted by one pixel circuit and the light emitted by the second pixel circuit improves the uniformity of the display screen of the display device, thereby improving the display effect of the display device.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • a "computer-readable medium” may be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
  • Non-exhaustive list of computer readable media include the following: electrical connections with one or more wires (electronic device), portable computer disk cartridges (magnetic device), random access memory (RAM), Read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program may be printed, as the paper or other medium may be optically scanned, for example, and subsequently edited, interpreted, or otherwise suitable as necessary. process to obtain the program electronically and then store it in computer memory.

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Abstract

提供一种显示驱动电路(10)及显示装置(30)，其中的显示驱动电路(10)包括多个像素电路(11)；每一个像素电路(11)的数据端与对应的数据线(DATA)连接，数据线(DATA)用于提供数据信号；每一个像素电路(11)的栅极端与对应的栅极线(GATE)连接，栅极线(GATE)用于提供栅极信号；多个像素电路(11)的电源端均与同一条电源公共线(VDD)连接；多个像素电路(11)被划分为至少一个第一像素电路(111)和至少一个第二像素电路(112)，第一像素电路(111)的发光效率小于第二像素电路(112)的发光效率，第一像素电路(111)的驱动模块中的薄膜场效应晶体管的沟道的宽长比大于第二像素电路(112)的驱动模块中的薄膜场效应晶体管的沟道的宽长比。基于以上方式，可有效改善显示装置(30)的显示效果。

Description

显示驱动电路及显示装置
相关申请的交叉引用
本申请要求享有于2022年06月27日提交的名称为“显示驱动电路及显示装置”的中国专利申请2022107453632的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及显示技术领域，特别是涉及显示驱动电路及显示装置。
背景技术
现有技术中，在显示装置中通常需要设置多个像素电路以组成一个显示画面所对应的像素电路阵列，而在该多个像素电路中，通常设有多种发光效率的像素电路，例如能够发出红色光的红光像素电路、绿光像素电路和蓝光像素电路，其中，发光效率较低的像素电路(如蓝光像素电路)和发光效率较高的像素电路(如红光像素电路或绿光像素电路)在电流相同时，发光效率较低的像素电路所发出的光的亮度小于发光效率较高的像素电路所发出的光的亮度。
因此，现有技术的缺陷在于，在多个像素电路共用同一公共线所提供的电压时，由于各像素电路本身阻值相同或相近，使得发光效率较低的像素电路和发光效率较高的像素电路的电流相同或相近，进而易使得多个像素电路中发光效率较低的像素电路所发出的光的亮度小于发光效率较高的像素电路所发出的光的亮度，使得显示装置中不同发光效率的像素电路所发出的光的亮度不一致，降低了显示装置的显示画面的均一性，使得显示装置的显示效果较差。
发明内容
本申请主要解决的技术问题是如何改善显示装置的显示效果。
为了解决上述技术问题，本申请采用的第一个技术方案是：一种显示驱动电路，包括多个像素电路；每一个像素电路的数据端与对应的数据线连接，数据线用于提供数据信号；每一个像素电路的栅极端与对应的栅极线连接，栅极线用于提供栅极信号；多个像素电路的电源端均与同一条电源公共线连接；多个像素电路被划分为至少一个第一像素电路和至少一个第二像素电路，第一像素电路的发光效率小于第二像素电路的发光效率，第一像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比大于第二像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比。
其中，第一像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比与第二像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例作为第一比例，第一像素电路发出预设亮度的光时的电流与第二像素电路发出同一预设亮度的光时的电流之间的比例作为第二比例，第一比例与第二比例呈正相关关系。
其中，第一比例等于第二比例。
其中，电源线路为相应像素单元的电源端与电源公共线之间的连接线路，多个像素电路包括至少两个第一像素电路，至少两个第一像素电路中的各像素电路的发光效率相同，至少两个第一像素电路被划分为至少一个第一类像素电路和至少一个第二类像素电路，第一类像素电路的电源线路的长度大于第二类像素电路的电源线路的长度，第一类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比大于第二类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比。
其中，第一类像素电路的电源线路的长度与第二类像素电路的电源线路的长度之间的比例作为第三比例，第一类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比与第二类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例作为第四比例，第三比例与第四比例呈正相关关系。
其中，第三比例与第四比例相等。
其中，第一像素电路为蓝光像素电路，第二像素电路为红光像素电路或绿光像素电路。
其中，像素电路的发光效率与像素电路中的发光半导体材质相关联。
其中，多个像素电路的数量大于2且不大于共用数量，共用数量为基于共用数 量计算公式确定的值；共用数量计算公式为：
Figure PCTCN2022140790-appb-000001
其中，n 1为共用数量，H 1为预设常数，k为像素电路的薄膜场效应晶体管的特性参数，I为像素电路中的电流，R 1为多个像素电路中相邻像素电路之间的电源线路的电阻，μ为薄膜场效应晶体管的迁移率，W为薄膜场效应晶体管的沟道的宽度，L为薄膜场效应晶体管的沟道的长度，C为薄膜场效应晶体管的构造电容。
为了解决上述技术问题，本申请采用的第二个技术方案是：一种显示装置，包括发光显示模组和上述显示驱动电路。
本申请的有益效果在于：区别于现有技术，本申请的技术方案通过使共用同一电源公共线的多个像素电路中，发光效率较低的第一像素电路中的薄膜场效应晶体管的沟道的宽长比大于发光效率较高的第二像素电路中的薄膜场效应晶体管的沟道的宽长比，以在电压相同的情况下，使得第一像素电路所对应的电流大于第二像素电路所对应的电流，降低第一像素电路发出的光与第二像素电路发出的光的亮度差异，提高了显示装置的显示画面的均一性，进而改善显示装置的显示效果。
附图说明
图1是本申请显示驱动电路的一实施例的结构示意图之一：
图2是本申请显示驱动电路的一实施例的结构示意图之二；
图3是本申请显示驱动电路的一实施例的结构示意图之三；
图4是本申请显示驱动电路的一实施例的结构示意图之四；
图5是本申请显示驱动电路的一实施例的结构示意图之五；
图6是本申请显示驱动电路的一实施例的结构示意图之六；
图7是本申请像素电路的一实施例的结构示意图；
图8是本申请显示装置的一实施例的结构示意图。
附图标记：显示驱动电路10，像素电路11，第一像素电路111，第一类像素电 路1111，第二类像素电路1112，第二像素电路112，第一发光控制模块21，驱动模块22，第二发光控制模块23，开关模块24，存储模块25，初始化模块26，数据写入模块27，发光模块28，显示装置30，发光显示模组31，显示驱动电路32。
具体实施方式
下面结合附图和实施例，对本申请作进一步的详细描述。特别指出的是，以下实施例仅用于说明本申请，但不对本申请的范围进行限定。同样的，以下实施例仅为本申请的部分实施例而非全部实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其他实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其他实施例相结合。
本申请的描述中，需要说明书的是，除非另外明确的规定和限定，术语“安装”、“设置”、“相连”、“连接”应做广义理解，例如，可以是固定连接，可以是可拆卸连接，或一体地连接；可以是机械来能接，也可以是电连接；可以是直接相连，也可以通过中间媒介间隔相连。对于本领域的普通技术人员而言，可以具体情况连接上述属于在本申请的具体含义。
首先对本申请提及的显示装置中的多个像素电路进行举例说明，本申请中的显示驱动电路，可以包括由多个“2T1C像素电路”构成的多个像素电路，具体请参见图1，图1是本申请显示驱动电路的一实施例的结构示意图之一，如图1所示，显示驱动电路10包括多个像素电路11，一个像素电路11中包括两个薄膜场效应晶体管和一个电容，多个像素电路11的电源端均连接同一条电源公共线(VDD)，各像素电路11还分别与电源负极线(VSS)、数据线(DATA)和栅极线(GATE)连接。基于上述方式，即可构造出多个像素电路11均与同一条电源公共线连接的显示驱动电路10，也是后续本申请显示驱动电路的基本构造。
此外，本申请显示驱动电路中的像素电路还可以是除“2T1C像素电路”以外的其它类型的像素电路，具体可根据实际需求而定，此处不作限定。
本申请首先提出一种显示驱动电路，参见图2，图2是本申请显示驱动电路的 一实施例的结构示意图之二。
如图1和图2所示，显示驱动电路10包括多个像素电路11。
在该多个像素电路11中，各像素电路的数据端与对应的数据线(DATA)连接，数据线用于提供数据信号，各像素电路的栅极端与对应的栅极线(GATE)连接，栅极线用于提供栅极信号，各像素电路的接地端与对应的电源负极线(VSS)连接，电源负极线用于提供负极信号。
多个像素电路11中的每一个像素电路11的电源端均与同一条电源公共线(VDD)连接，并将相应像素电路的电源端与电源公共线之间的连接线路记作相应像素电路的电源线路。
如图2所示，多个像素电路11可根据发光效率的高低被划分为至少一个第一像素电路111和至少一个第二像素电路112，其中，第一像素电路111的发光效率小于第二像素电路112的发光效率，也即，在供给相同电流的情况下，第一像素电路111在该电流下显示的亮度小于第二像素电路112在该电流下显示的亮度。
在上述前提下，使第一像素电路111中的薄膜场效应晶体管的沟道的宽长比大于第二像素电路112中的薄膜场效应晶体管的沟道的宽长比。
在像素电路中，像素电路的电流与相应薄膜场效应晶体管的关系如下：
Figure PCTCN2022140790-appb-000002
式(1)中，I为相应像素电路的电流，
Figure PCTCN2022140790-appb-000003
为相应像素电路中的薄膜场效应晶体管的沟道的宽长比，μ为相应像素电路中的薄膜场效应晶体管的迁移率，C为相应像素电路中的薄膜场效应晶体管的构造电容，V GS为相应像素电路中的薄膜场效应晶体管的栅极与漏极之间的电压，V TH为相应像素电路中的薄膜场效应晶体管的最小开启电压。构造电容为相应像素电路中的薄膜场效应晶体管的金属层、绝缘层和有源层所构成电容的电容值。
由式(1)可知，在其它参数不变的情况下，相应像素电路中的薄膜场效应晶体管的沟道的宽长比越大，则相应像素电路的电流越大。因此，基于上述方式，能够在第一像素电路111的电源线路在所接收的电压与第二像素电路112相同的情况下，使得第一像素电路111的电流大于第二像素电路112，进而使得第一像素电路111在相 应电流下显示的亮度与第二像素电路112在相应电流下显示的亮度之间的差值降低，也即可通过对薄膜场效应晶体管的尺寸进行调节以达到改变流经像素电路的最大电流或预设电压下的电流的目的，能够使得不同发光效率的像素电路之间的亮度差降低，提高显示画面的均一性，进而改善显示装置的显示效果。
像素电路11可以是OLED(Organic Light-Emitting Diode，有机发光二极管)像素电路，也可以是其它类型的像素电路，具体可根据实际需求而定，此处不作限定。
举例说明，如图2所示，发光效率较低的第一像素电路111中的薄膜场效应晶体管A比发光效率较高的第二像素电路112中的薄膜场效应晶体管B的沟道的宽长比更大。
区别于现有技术，本申请的技术方案通过使共用同一电源公共线的多个像素电路中，发光效率较低的第一像素电路中的薄膜场效应晶体管的沟道的宽长比大于发光效率较高的第二像素电路中的薄膜场效应晶体管的沟道的宽长比，以在电压相同的情况下，使得第一像素电路所对应的电流大于第二像素电路所对应的电流，降低第一像素电路发出的光与第二像素电路发出的光的亮度差异，提高了显示装置的显示画面的均一性，进而改善显示装置的显示效果。
在一实施例中，将第一像素电路111的驱动模块中的薄膜场效应晶体管的沟道的宽长比与第二像素电路112的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例记作第一比例，并将第一像素电路111发出预设亮度的光时的电流与第二像素电路112发出同一预设亮度的光时的电流之间的比例记作第二比例，第一比例与第二比例呈正相关关系。
具体地，可将第一像素电路111与第二像素电路112发出同一亮度时，第一像素电路111与第二像素电路112的电流比例记作第二比例，第一比例与第二比例呈正相关关系。
第一比例可处于第二比例所对应的阈值范围内，第二比例的值位于第二比例所对应的阈值范围内。第二比例的值可以是第二比例所对应的阈值范围的最大值、最小值、中位值和其它任意值中的一种，此处不作限定。第二比例所对应的阈值范围与相应像素电路的特性相关联，该特性可包括像素电路中的薄膜长场效应晶体管的特性。
可选地，第一比例等于第二比例。
具体地，可以使第一比例等于第二比例，也即使得第一像素电路111中的薄膜场效应晶体管的沟道的宽长比与第二像素电路112中的薄膜场效应晶体管的沟道的宽长比之间的比例，与第一像素电路111发出预设亮度的光时的电流与第二像素电路112发出同一预设亮度的光时的电流之间的比例相等，即可使得第一像素电路111和第二像素电路112在电源端均连接同一条电源公共线以接收同一电源电压时，使得第一像素电路111和第二像素电路112所发出的光的亮度相同，进而确保不同显示驱动电路10中的各像素电路11的亮度保持一致，提高显示画面的均一性，改善了显示装置的显示效果。
在一实施例中，电源线路为相应像素单元的电源端与电源公共线之间的连接线路。
如图3所示，多个像素电路11包括至少两个第一像素电路111，至少两个第一像素电路111中的每一个像素电路11的发光效率均相同，至少两个第一像素电路111可以被划分为至少一个第一类像素电路1111和至少一个第二类像素电路1112，第一类像素电路1111的电源线路的长度大于第二类像素电路1112的电源线路的长度。
需要说明的是，电流-电压-电阻公式和电阻公式如下：
Figure PCTCN2022140790-appb-000004
Figure PCTCN2022140790-appb-000005
式(2)和(3)中，I为相应像素电路的电流，U为相应像素电路的电压，R为相应像素电路的电源线路的电阻，ρ为相应像素电路的电源线路的电阻率，L为相应像素电路的电源线路的长度，S为相应像素电路的电源线路的横截面积。
由式(2)可知，电流与电阻成反比关系，而由式(3)可知，电阻与电源线路的长度呈正比关系，因此，在其它参数相同的情况下，电源线路的长度越大，则相应的电阻越大，且相应的电流越小。
因此，根据上述电阻公式式(3)可知，在式(3)除长度外的其它参数等同的情况下长度较长的第一类像素电路1111的电源线路所对应的电阻较大，故可使第一类像素电路1111的驱动模块中的薄膜场效应晶体管的沟道的宽长比大于第二类像素电路1112的驱动模块中的薄膜场效应晶体管的沟道的宽长比，以使得接收同一电源公共线 所提供的电源电压的第一类像素电路1111和第二类像素电路1112电流趋于相等，由于第一类像素电路1111和第二类像素电路1112的发光效率相同，基于上述方式可提高至少两个第一像素电路111中的第一类像素电路1111和第二类像素电路1112所发出亮度的一致性，进而改善显示装置的显示效果。
举例说明，如图3所示，电源线路的长度较长的第一类像素电路1111的驱动模块中的薄膜场效应晶体管C的沟道的宽长比比电源线路的长度较短的第二类像素电路1112的驱动模块中的薄膜场效应晶体管D的沟道的宽长比更大。
可选地，可将第一类像素电路1111的电源线路的长度与第二类像素电路1112的电源线路的长度之间的比例作为第三比例，第一类像素电路1111的驱动模块中的薄膜场效应晶体管的沟道的宽长比与第二类像素电路1112的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例作为第四比例，第三比例与第四比例呈正相关关系。
第四比例可处于第三比例所对应的阈值范围内，第三比例的值位于第三比例所对应的阈值范围内。第三比例的值可以是第三比例所对应的阈值范围的最大值、最小值、中位值和其它任意值中的一种，此处不作限定。第三比例所对应的阈值范围与相应像素电路的特性相关联，该特性可包括像素电路中的薄膜长场效应晶体管的特性。
举例说明，如图3所示，假设与第一公共线VDD距离最近的像素电路(如第二像素电路112、第二类像素电路1112)与第一公共线VDD之间的距离为L0，而相邻像素电路之间的距离均为Lp，则第一类像素电路1111的电源线路的长度为(Lp+L0)，第二类像素电路1112的电源线路的长度为L0，第三比例为(Lp+L0)：L0，此时需使得第一类像素电路1111的电源线路的驱动模块中的薄膜场效应晶体管的沟道的宽长比与第二类像素电路1112的电源线路的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例，也即第四比例也为(Lp+L0)：L0，以使得图3所示的第一类像素电路1111的电源线路与第二类像素电路1112的电源线路电阻趋于相等，进而改善第一类像素电路1111与第二类像素电路1112之间的亮度均一性，改善显示装置的显示效果。
需要说明的是，上述仅为一种显示驱动电路结构的示例，在第一类像素电路1111和第二类像素电路1112分别与第一公共线VDD的距离与上述示例不同时，相应的，电源线路的长度、第三比例、第四比例均可能发生变化，此处不作限定。
此外，如图3所示，第一类像素电路1111的电源线路的驱动模块中的薄膜场效应晶体管的沟道的宽长比最大，第二类像素电路1112的电源线路的驱动模块中的薄 膜场效应晶体管的沟道的宽长比中等，第二像素电路112的电源线路的驱动模块中的薄膜场效应晶体管的沟道的宽长比最小。
具体地，第三比例与第四比例相等。
也即，假设第一类像素电路1111的电源线路的长度为第一长度，而第二类像素电路1112的电源线路的长度为第二长度，第二长度除以第一长度的商为目标倍数，则第二类像素电路1112的驱动模块中的薄膜场效应晶体管的沟道的宽长比为第一类像素电路1111的驱动模块中的薄膜场效应晶体管的沟道的宽长比的目标倍数。
基于上述方式可使得第一类像素电路1111的电源线路所对应的电阻与第二类像素电路1112的电源线路所对应的电阻趋于相等，进而使得接收同一电源公共线所提供的电源电压的第一类像素电路1111和第二类像素电路1112电流相等，由于第一类像素电路1111和第二类像素电路1112的发光效率相同，基于上述方式可提高至少两个第一像素电路111中的第一类像素电路1111和第二类像素电路1112所发出亮度的一致性，进而改善显示装置的显示效果。
在一实施例中，第一像素电路111为蓝光像素电路，第二像素电路112为红光像素电路或绿光像素电路。
具体地，在实际中，蓝光像素电路的发光效率通常低于红光像素电路或绿光像素电路，而红光像素电路和绿光像素电路的发光效率较为相近。像素电路11的发光效率通常与像素电路11中的发光半导体材质相关联，该发光半导体可以是一种发光二极管。
举例说明，如图4所示，多个像素电路11包括红光像素电路R、绿光像素电路G和蓝光像素电路B。
需要说明的是，通常来说，红光像素电路R和绿光像素电路G的发光效率较为接近，在本示例中，假设红光像素电路R和绿光像素电路G的发光效率相等，而蓝光像素电路B的发光效率则小于红光像素电路R或绿光像素电路G，在此前提下，可将蓝光像素电路B作为发光效率较低的第一像素电路111，并将红光像素电路R和绿光像素电路G作为发光效率较高的第二像素电路112。
如图4所示，蓝光像素电路B的电源线路的驱动模块中的薄膜场效应晶体管的沟道的宽长比，大于，红光像素电路R或绿光像素电路G的电源线路的驱动模块中的薄膜场效应晶体管的沟道的宽长比，并且，若将蓝光像素电路B的电源线路的驱动模 块中的薄膜场效应晶体管的沟道的宽长比与红光像素电路R或绿光像素电路G的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例作为第一比例，并将蓝光像素电路B的发光效率与红光像素电路R或绿光像素电路G的发光效率之间的比例作为第二比例，则第一比例与第二比例可呈正相关关系，甚至第一比例可与第二比例相等，以使得蓝光像素电路B的电源线路的电阻与红光像素电路R或绿光像素电路G的电源线路的电阻相等，进而使得红光像素电路R、绿光像素电路G和蓝光像素电路B在接收到同一条第一公共线所提供的电源电压后，能发出相同亮度的光，进而改善各像素电路的亮度均一性，从而改善显示装置的显示效果。
如图5所示，第一像素电路111为蓝光像素电路，第二像素电路112为红光像素电路，蓝光像素电路的发光效率低于红光像素电路的发光效率，蓝光像素电路中的薄膜场效应晶体管的宽长比大于红光像素电路中的薄膜场效应晶体管的宽长比。
如图6所示，第一类像素电路1111为电源线路较长的蓝光像素电路，第二类像素电路1112为电源线路较短的蓝光像素电路，二者发光效率相等，电源线路较长的蓝光像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比，大于，电源线路较短的蓝光像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比。
在一实施例中，如图7所示，图7是本申请像素电路的一实施例的结构示意图，像素电路11包括第一发光控制模块21、驱动模块22、第二发光控制模块23、开关模块24、存储模块25、初始化模块26、数据写入模块27和发光模块28。
数据写入模块27的输入端用于接收数据信号，数据写入模块27的输出端连接第二发光控制模块23的输入端，第一发光控制模块21的输入端用于接收电源电压信号，第一发光控制模块21的输出端连接驱动模块22的输入端，驱动模块22的栅极用于接收栅极信号，驱动模块22的输出端连接第二发光控制模块23的输入端，驱动模块22包括上述薄膜场效应晶体管，第二发光控制模块23的输出端连接发光模块28的输入端，发光模块28的输出端用于接收地电压信号，初始化模块26的输入端用于接收初始化信号，初始化模块26的第一输出端连接存储模块25的输入端，初始化模块26的第二输出端连接发光模块28的输入端，存储模块25的第一输出端连接开关模块24的输入端，存储模块25的第二输出端连接驱动模块22的驱动端，开关模块24的输出端连接驱动模块22的输入端。
在一实施例中，多个像素电路11的数量大于2且不大于共用数量，共用数量 为基于共用数量计算公式确定的值；
共用数量计算公式为：
Figure PCTCN2022140790-appb-000006
其中，n 1为共用数量，H 1为预设常数，k为像素电路的薄膜场效应晶体管的特性参数，I为像素电路中的电流，R 1为多个像素电路中相邻像素电路之间的电源线路的电阻，μ为薄膜场效应晶体管的迁移率，W为薄膜场效应晶体管的沟道的宽度，L为薄膜场效应晶体管的沟道的长度，C为薄膜场效应晶体管的构造电容。
具体地，在一种示例中，预设常数与像素电路11中的电流呈正相关关系，且与相邻像素电路之间的电流波动值呈负相关关系。具体地，相邻像素电路之间的电流波动值为相邻像素电路11之间的电流差值。为确保显示装置中各像素电路所显示亮度的均一性，该电流差值通常需限制为像素电路11中的电流的2％-3％内。
在另一种示例中，预设常数具体也可以在预设常数范围内，该预设常数范围可根据显示装置的实际运行硬件条件和/或运行环境条件决定，例如，该预设常数范围可以是0.08-0.12，也可以是其它范围，此处不作限定。
在实际中，相邻像素电路11的连接同一条电源公共线的电源线路分别连接至同一节点，再通过该节点与电源公共线的连接，实现相邻像素电路11连接同一条电源公共线，因此，将相邻像素电路之间的电源线路的电阻作为上述共用数量计算公式的计算参数之一，能够更全面地考量显示驱动电路的相关参数，进而得到最合适的共用数量，改善显示装置的显示效果。
基于上述方式，可基于显示驱动电路中的各像素电路11之间的相关数据，确定共用同一条电源公共线的像素电路11的最大数量(即上述共用数量)，并使得该多个像素电路11的数量不超过该最大数量，进而可使得该多个像素电路11分别与电源公共线之间的连接线路的总电阻均相差不大，提高了多个像素电路11中的每一个像素电路11所接收到的电源电压信号的幅值的均一性，改善了包含该显示驱动电路的显示装置的显示效果。
进而可通过共用数量计算公式，合理运用各项参数计算得到较为合理的共用数 量，用于对该多个像素电路11中所包括的像素电路11的数量进行限制，改善了显示装置的显示效果。
本申请还公开了一种显示装置，参见图8，图8是本申请显示装置的一实施例的结构示意图，显示装置30包括发光显示模组31和显示驱动电路32，显示驱动电路32可以是前文实施例中的任意一种显示驱动电路10，此处不再赘述。
该显示装置可以是车载显示装置，也可以是电视，还可以是移动终端显示器，更可以是其它类型的显示装置，此处不作限定。
区别于现有技术，本申请的技术方案通过使共用同一电源公共线的多个像素电路中，发光效率较低的第一像素电路中的薄膜场效应晶体管的沟道的宽长比大于发光效率较高的第二像素电路中的薄膜场效应晶体管的沟道的宽长比，以在电压相同的情况下，使得第一像素电路所对应的电流大于第二像素电路所对应的电流，降低第一像素电路发出的光与第二像素电路发出的光的亮度差异，提高了显示装置的显示画面的均一性，进而改善显示装置的显示效果。
在本申请的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读介质中，以供指令执行***、装置或设备(可以是个人计算机，服务器，网络设备或其他可以从指令执行***、装置或设备取指令并执行指令的***)使用，或结合这些指令执行***、装置或设备而使用。就本说明书而言，"计算机可读介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行***、装置或设备或结合这些指令执行***、装置或设备而使用的装置。计算机可读介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (15)

  1. 一种显示驱动电路，其中，包括多个像素电路；
    每一个所述像素电路的数据端与对应的数据线连接，所述数据线用于提供数据信号；每一个所述像素电路的栅极端与对应的栅极线连接，所述栅极线用于提供栅极信号；所述多个像素电路的电源端均与同一条电源公共线连接；
    所述多个像素电路被划分为至少一个第一像素电路和至少一个第二像素电路，所述第一像素电路的发光效率小于所述第二像素电路的发光效率，所述第一像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比大于所述第二像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比。
  2. 根据权利要求1所述的显示驱动电路，其中，所述第一像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比与所述第二像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例作为第一比例，所述第一像素电路发出预设亮度的光时的电流与所述第二像素电路发出同一所述预设亮度的光时的电流之间的比例作为第二比例，所述第一比例与所述第二比例呈正相关关系。
  3. 根据权利要求2所述的显示驱动电路，其中，所述第一比例等于所述第二比例。
  4. 根据权利要求1所述的显示驱动电路，其中，电源线路为相应像素单元的电源端与电源公共线之间的连接线路，所述多个像素电路包括至少两个第一像素电路，所述至少两个第一像素电路中的各像素电路的发光效率相同，所述至少两个第一像素电路被划分为至少一个第一类像素电路和至少一个第二类像素电路，所述第一类像素电路的电源线路的长度大于所述第二类像素电路的电源线路的长度，所述第一类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比大于所述第二类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比。
  5. 根据权利要求4所述的显示驱动电路，其中，所述第一类像素电路的电源线路的长度与所述第二类像素电路的电源线路的长度之间的比例作为第三比例，所述第一类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比与所述第二类像素电路的驱动模块中的薄膜场效应晶体管的沟道的宽长比之间的比例作为第四比例，所述第三比例与所述第四比例呈正相关关系。
  6. 根据权利要求5所述的显示驱动电路，其中，所述第三比例与所述第四比例相等。
  7. 根据权利要求1所述的显示驱动电路，其中，所述第一像素电路为蓝光像素电路，所述第二像素电路为红光像素电路或绿光像素电路。
  8. 根据权利要求7所述的显示驱动电路，其中，所述像素电路的发光效率与所述像素电路中的发光半导体材质相关联。
  9. 根据权利要求1所述的显示驱动电路，其中，所述像素电路包括第一发光控制模块、驱动模块、第二发光控制模块、开关模块、存储模块、初始化模块、数据写入模块和发光模块；
    所述数据写入模块的输入端用于接收数据信号，所述数据写入模块的输出端连接所述第二发光控制模块的输入端，所述第一发光控制模块的输入端用于接收电源电压信号，所述第一发光控制模块的输出端连接所述驱动模块的输入端，所述驱动模块的输出端连接所述第二发光控制模块的输入端，所述第二发光控制模块的输出端连接所述发光模块的输入端，所述发光模块的输出端用于接收地电压信号，所述初始化模块的输入端用于接收初始化信号，所述初始化模块的第一输出端连接所述存储模块的输入端，所述初始化模块的第二输出端连接所述发光模块的输入端，所述存储模块的第一输出端连接所述开关模块的输入端，所述存储模块的第二输出端连接所述驱动模块的驱动端，所述开关模块的输出端连接所述驱动模块的输入端。
  10. 根据权利要求1所述的显示驱动电路，其中，所述多个像素电路的数量大于2且不大于共用数量，所述共用数量为基于共用数量计算公式确定的值；
    所述共用数量计算公式为：
    Figure PCTCN2022140790-appb-100001
    其中，n 1为所述共用数量，H 1为预设常数，k为所述像素电路的薄膜场效应晶体管的特性参数，I为所述像素电路中的电流，R 1为所述多个像素电路中相邻像素电路之间的电源线路的电阻，μ为所述薄膜场效应晶体管的迁移率，W为所述薄膜场效应晶体管的沟道的宽度，L为所述薄膜场效应晶体管的沟道的长度，C为所述薄膜场效应晶体管的构造电容。
  11. 根据权利要求10所述的显示驱动电路，其中，所述构造电容为相应所述薄膜场效应晶体管中由金属层、绝缘层和有源层所构成电容的电容值。
  12. 根据权利要求10所述的显示驱动电路，其中，所述预设常数与所述像素电路中的电流呈正相关关系，且与相邻所述像素电路之间的电流波动值呈负相关关系。
  13. 根据权利要求12所述的显示驱动电路，其中，相邻所述像素电路之间的电流波动值为相邻所述像素电路之间的电流差值。
  14. 根据权利要求10所述的显示驱动电路，其中，所述预设常数处于预设常数范围内，所述预设常数范围为基于所述显示驱动电路的运行硬件条件和/或运行环境条件确定的数值范围。
  15. 一种显示装置，其中，包括发光显示模组和如权利要求1所述的显示驱动电路。
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115240585B (zh) * 2022-06-27 2023-07-18 惠科股份有限公司 显示驱动电路及显示装置
CN115132139B (zh) 2022-06-27 2023-07-18 绵阳惠科光电科技有限公司 显示驱动电路及显示装置
CN115775528A (zh) * 2022-10-28 2023-03-10 惠科股份有限公司 一种像素电路以及显示面板

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134258A (zh) * 2017-06-26 2017-09-05 京东方科技集团股份有限公司 Oled补偿电路及其制作方法、oled补偿装置和显示装置
CN110060621A (zh) * 2019-05-31 2019-07-26 上海天马有机发光显示技术有限公司 一种显示面板及显示装置
CN110137236A (zh) * 2019-06-03 2019-08-16 深圳市华星光电半导体显示技术有限公司 显示面板及显示装置
CN210575036U (zh) * 2019-12-24 2020-05-19 北京京东方技术开发有限公司 一种阵列基板、显示面板及显示装置
CN112542126A (zh) * 2020-12-15 2021-03-23 合肥维信诺科技有限公司 显示面板和显示装置
US20210125555A1 (en) * 2019-10-28 2021-04-29 Joled Inc. Pixel circuit and display device
CN112735341A (zh) * 2020-12-30 2021-04-30 Tcl华星光电技术有限公司 像素驱动电路及显示装置
CN214477461U (zh) * 2021-02-03 2021-10-22 京东方科技集团股份有限公司 显示面板和显示装置
US20220036808A1 (en) * 2020-07-28 2022-02-03 Wuhan Tianma Micro-Electronics Co., Ltd. Display panel with different pixel density and display device
CN115240585A (zh) * 2022-06-27 2022-10-25 惠科股份有限公司 显示驱动电路及显示装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6825834B2 (en) * 2000-11-06 2004-11-30 Sanyo Electric Co., Ltd. Active matrix display device
US20050030268A1 (en) * 2002-08-27 2005-02-10 Weixiao Zhang Full-color electronic device with separate power supply lines
JP4148064B2 (ja) * 2003-08-26 2008-09-10 セイコーエプソン株式会社 液晶表示装置の駆動法、液晶表示装置及び携帯型電子機器
WO2012008232A1 (ja) * 2010-07-12 2012-01-19 シャープ株式会社 表示装置およびその駆動方法
CN103002624B (zh) * 2011-09-13 2015-02-25 昆山维信诺显示技术有限公司 有源oled照明装置
CN104078003B (zh) * 2014-06-18 2016-08-31 京东方科技集团股份有限公司 像素电路和显示装置
CN108596083B (zh) * 2018-04-23 2021-03-02 上海天马有机发光显示技术有限公司 一种显示面板和显示装置
CN109712551B (zh) * 2019-01-31 2020-07-28 京东方科技集团股份有限公司 栅极驱动电路及其驱动方法、显示装置及其控制方法
KR20200138566A (ko) * 2019-05-31 2020-12-10 삼성디스플레이 주식회사 표시패널
CN110751922B (zh) * 2019-10-31 2022-12-06 武汉天马微电子有限公司 显示面板及显示装置
CN113327947A (zh) * 2019-11-29 2021-08-31 京东方科技集团股份有限公司 显示基板以及显示装置
CN111583865B (zh) * 2020-06-12 2021-11-26 京东方科技集团股份有限公司 显示面板、显示装置及开关器件的沟道宽长比的确定方法
CN114299891B (zh) * 2021-12-23 2023-04-25 长沙惠科光电有限公司 显示面板驱动方法、驱动器及显示装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134258A (zh) * 2017-06-26 2017-09-05 京东方科技集团股份有限公司 Oled补偿电路及其制作方法、oled补偿装置和显示装置
CN110060621A (zh) * 2019-05-31 2019-07-26 上海天马有机发光显示技术有限公司 一种显示面板及显示装置
CN110137236A (zh) * 2019-06-03 2019-08-16 深圳市华星光电半导体显示技术有限公司 显示面板及显示装置
US20210125555A1 (en) * 2019-10-28 2021-04-29 Joled Inc. Pixel circuit and display device
CN210575036U (zh) * 2019-12-24 2020-05-19 北京京东方技术开发有限公司 一种阵列基板、显示面板及显示装置
US20220036808A1 (en) * 2020-07-28 2022-02-03 Wuhan Tianma Micro-Electronics Co., Ltd. Display panel with different pixel density and display device
CN112542126A (zh) * 2020-12-15 2021-03-23 合肥维信诺科技有限公司 显示面板和显示装置
CN112735341A (zh) * 2020-12-30 2021-04-30 Tcl华星光电技术有限公司 像素驱动电路及显示装置
CN214477461U (zh) * 2021-02-03 2021-10-22 京东方科技集团股份有限公司 显示面板和显示装置
CN115240585A (zh) * 2022-06-27 2022-10-25 惠科股份有限公司 显示驱动电路及显示装置

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