CN110232889B - Pixel driving circuit and display panel - Google Patents
Pixel driving circuit and display panel Download PDFInfo
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- CN110232889B CN110232889B CN201910382279.7A CN201910382279A CN110232889B CN 110232889 B CN110232889 B CN 110232889B CN 201910382279 A CN201910382279 A CN 201910382279A CN 110232889 B CN110232889 B CN 110232889B
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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]
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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
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
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- Control Of El Displays (AREA)
Abstract
The application provides a pixel drive circuit and display panel, the pixel drive circuit who adopts 4T1C structure carries out effective compensation to the threshold voltage of the drive transistor in every pixel to, the drive current of light emitting device does not receive the influence of first power signal, consequently, has improved the luminous stability of light emitting device, and then has improved the picture quality.
Description
Technical Field
The application relates to the technical field of display, in particular to a pixel driving circuit and a display panel.
Background
In the prior art, the transistors in the pixel driving circuit mostly adopt low-temperature polysilicon thin film transistors or oxide thin film transistors.
Due to the limitations of the crystallization process, the low temperature polysilicon thin film transistors fabricated on large area glass substrates often have non-uniformity in electrical parameters such as threshold voltage, mobility, etc. Therefore, the pixel driving circuit is compensated. However, the conventional pixel compensation circuit has a disadvantage that the driving current is related to the power signal, and the voltage drop of the power signal affects the driving current, so that the light emission of the light emitting device is unstable, and the image quality is affected.
Disclosure of Invention
The embodiment of the application provides a pixel driving circuit and a display panel, which can compensate the threshold voltage change of a driving transistor, improve the light-emitting uniformity of a light-emitting device and further improve the image quality.
In a first aspect, the present application provides a pixel driving circuit, comprising: the device comprises a reset module, a compensation module, a data writing module and a light emitting module; the reset module, the data writing module and the light-emitting module are all connected with the compensation module;
the reset module is connected with a first control signal and is used for transmitting a reset signal to the light-emitting module under the control of the first control signal so as to reset the light-emitting module for the first time;
the data writing module is connected to the first control signal and is used for resetting the light emitting module for the second time through the reference potential of the data signal under the control of the first control signal;
the compensation module is connected to a second control signal and is used for acquiring a threshold voltage under the control of the second control signal;
the data writing module is also used for transmitting the display potential of the data signal to the compensation module under the control of the first control signal.
In the pixel driving circuit provided by the present application, the reset module includes: a first transistor;
the gate of the first transistor is electrically connected to the first control signal, the drain of the first transistor is electrically connected to the reset signal, and the source of the first transistor is electrically connected to the first node.
In the pixel driving circuit provided by the present application, the compensation module includes: a second transistor and a storage capacitor;
a gate of the second transistor is electrically connected to the second control signal, a drain of the second transistor is electrically connected to the first node, and a source of the third transistor is electrically connected to the second node;
the first end of the storage capacitor is electrically connected to the data writing module, and the second end of the storage capacitor is electrically connected to the second node.
In the pixel driving circuit provided by the present application, the data writing module includes: a third transistor;
the gate of the third transistor is electrically connected to the first control signal, the drain of the third transistor is electrically connected to the data signal, and the source of the third transistor is electrically connected to the first end of the storage capacitor.
In the pixel driving circuit provided by the present application, the light emitting module includes: a light emitting device and a fourth transistor;
the anode of the light-emitting device is electrically connected to a first power signal, and the cathode of the light-emitting device is electrically connected to the first node;
a gate of the fourth transistor is electrically connected to the second node, a drain of the fourth transistor is electrically connected to the first node, and a source of the fourth transistor is electrically connected to a second power signal.
In the pixel driving circuit provided by the present application, the first transistor, the second transistor, the third transistor, and the fourth transistor are all NMOS transistors.
In the pixel driving circuit provided by the present application, the driving timing of the pixel driving circuit includes:
a reset phase for resetting the potential of the first node and the potential of the second node;
a threshold voltage obtaining stage for capturing the threshold voltage of the fourth transistor and storing the threshold voltage on the storage capacitor
A data writing stage, writing the data signal into a first end of the storage capacitor, and jumping the potential of a second end of the storage capacitor to a corresponding potential according to the coupling action of the storage capacitor;
and in the light emitting stage, the pixel driving circuit generates a driving current and supplies the driving current to the light emitting device for driving the light emitting display of the light emitting device.
In the pixel driving circuit provided by the present application, in the reset phase, the first control signal is at a high potential, the second control signal is at a low potential, the reset signal is transmitted to the first node through the first transistor, the data signal is transmitted to the first end of the storage capacitor through the third transistor, and a potential of the second node jumps to a potential corresponding to the data signal according to a coupling effect of the storage capacitor;
in a threshold voltage obtaining stage, the first control signal is at a low potential, the second control signal is at a high potential, and the first power supply signal charges the storage capacitor through the second transistor until a voltage difference between a gate and a source of the fourth transistor is equal to a threshold voltage of the fourth transistor;
in a data writing stage, the first control signal is at a high potential, the second control signal is at a low potential, the data signal is transmitted to the first end of the storage capacitor through the third transistor, and the potential of the second node jumps to a corresponding potential according to the coupling effect of the storage capacitor;
in the light emitting stage, the first control signal is at a low potential, the second control signal is at a low potential, the power signal is transmitted to the cathode of the light emitting device through the anode of the light emitting device, and the light emitting device emits light.
In the pixel driving circuit provided by the present application, the first control signal and the second control signal are both provided by an external timer.
In the pixel driving circuit provided by the present application, a current flowing through the light emitting device is independent of a threshold voltage of the fourth transistor.
In a second aspect, the present application provides a display panel including the pixel driving circuit of any of the embodiments of the present application.
The application provides a pixel drive circuit and display panel, the pixel drive circuit who adopts 4T1C structure carries out effective compensation to the threshold voltage of the drive transistor in every pixel to, the drive current of light emitting device does not receive the influence of first power signal, consequently, has improved the luminous stability of light emitting device, and then has improved the picture quality.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pixel driving circuit according to an embodiment of the present disclosure;
fig. 2 is a circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure;
fig. 3 is a timing diagram of driving signals of a pixel driving circuit provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The transistors used in all embodiments of the present application may be thin film transistors or field effect transistors or other devices with the same characteristics, and since the source and drain of the transistors used herein are symmetrical, the source and drain may be interchanged. In the embodiment of the present application, to distinguish two poles of a transistor except for a gate, one of the two poles is referred to as a source, and the other pole is referred to as a drain. The form in the drawing provides that the middle end of the switching transistor is a grid, the signal input end is a source, and the output end is a drain. In addition, the transistors used in the embodiments of the present application may include a P-type transistor and/or an N-type transistor, where the P-type transistor is turned on when the gate is at a low level and turned off when the gate is at a high level, and the N-type transistor is turned on when the gate is at a high level and turned off when the gate is at a low level.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a pixel driving circuit according to the present invention. As shown in FIG. 1, the pixel driving circuit comprises a reset module 101, a compensation module 102, a data writing module 103 and a light emitting module 104. The reset module 101, the data write module 103 and the light emitting module 104 are all connected to the compensation module 102.
The reset module 101 is connected to the first control signal Y, and the reset module 101 is configured to transmit the reset signal R to the light emitting module 103 under the control of the first control signal Y to reset the light emitting module 103 for the first time. The data writing module 103 is connected to the first control signal Y, and the data writing module 103 is configured to perform a second reset on the light emitting module 104 through the reference potential of the data signal D under the control of the first control signal Y. The compensation module 102 is connected to the second control signal E, and the compensation module 102 is configured to write the data signal D under the control of the second control signal E to obtain the threshold voltage. The data writing module 103 is further configured to transmit the display potential of the data signal D to the compensation module 102 under the control of the first control signal Y.
Specifically, referring to fig. 2, fig. 2 is a schematic circuit diagram of a pixel driving circuit according to the present invention.
The reset module 101 includes: the first transistor T1. The gate of the first transistor T1 is electrically connected to the first control signal Y, the drain of the first transistor T1 is electrically connected to the reset signal R, and the source of the first transistor T1 is electrically connected to the first node a.
The compensation module 102 includes: a second transistor T2 and a storage capacitor C. The gate of the second transistor T2 is electrically connected to the second control signal E, the drain of the second transistor T2 is electrically connected to the first node a, and the source of the second transistor T2 is electrically connected to the second node b. The first end of the storage capacitor C is electrically connected to the data writing module 103, and the second end of the storage capacitor C is electrically connected to the second node b.
The data writing module 103 includes: a third transistor. The gate of the third transistor T3 is electrically connected to the first control signal Y, the drain of the third transistor T3 is electrically connected to the data signal D, and the source of the third transistor T3 is electrically connected to the first end of the storage capacitor C.
The light emitting module 104 includes: a light emitting device L, and a fourth transistor T4. The anode of the light emitting device L is electrically connected to the first power signal Y, and the cathode of the light emitting device L is electrically connected to the first node a. The fourth transistor T4 is a driving transistor, the gate of the fourth transistor T4 is electrically connected to the second node b, the drain of the fourth transistor T4 is electrically connected to the first node a, and the source of the fourth transistor T4 is electrically connected to the second power signal W.
Further, the first transistor T1 is used to reset the cathode of the light emitting device L, the second transistor T3 is used to capture the threshold voltage of the fourth transistor T4, the third transistor T2 is used to reset the first terminal of the storage capacitor C and reset the second node b through the coupling effect of the storage capacitor C, that is, the gate of the fourth transistor T4 is reset through the coupling effect of the storage capacitor C, and the fourth transistor T4 is used to generate a driving current and supply the driving current to the light emitting device L, so that the light emitting device L emits light.
In some embodiments, the first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4 are all N-type transistors. The transistors in the pixel driving circuit provided by the embodiment of the application are the same type of transistors, so that the influence of difference among different types of transistors on the pixel driving circuit is avoided.
Referring to fig. 3, fig. 3 is a timing diagram of driving signals of the pixel driving circuit according to the present invention. The driving timing of the pixel driving circuit includes:
the reset phase t1 resets the potential of the first node a and the potential of the second node b.
A threshold voltage obtaining phase T2, capturing the threshold voltage Vth of the fourth transistor T4 and storing the threshold voltage Vth on the storage capacitor
And a data writing stage t3, writing the data signal D into the first end of the storage capacitor C, and jumping the potential of the second end of the storage capacitor C to a corresponding potential according to the coupling effect of the storage capacitor C.
During the light emitting period t4, the pixel driving circuit generates a driving current and supplies the driving current to the light emitting device L for driving the light emitting display of the light emitting device L.
It should be noted that, in some embodiments, the first control signal Y and the second control signal E are both provided by an external timer.
In the reset period T1, the first control signal Y is at a high level, the second control signal E is at a low level, the first transistor T1 is turned on, the second transistor T2 is turned on, the reset signal R is transmitted to the first node a through the first transistor T1, the signal remaining on the light emitting device L in the previous period is removed, so as to reset the light emitting device L, the data signal D is transmitted to the first end of the storage capacitor C through the third transistor T3, and due to the coupling effect of the storage capacitor C, the potential of the second end of the storage capacitor C is raised to a corresponding potential, that is, the potential of the second node b is raised to a corresponding potential, so as to turn on the fourth transistor T4.
That is, the reset module 101 performs the first reset on the light emitting module 104 by: the first transistor T1 in the reset module 101 resets the first node a to reset the light emitting device L in the light emitting module 104. The data writing module 103 resets the light emitting module 104 for the second time by the reference potential of the data signal D, which means: the third transistor T3 in the data writing block 103 resets the second node b by the reference potential of the data signal D.
For example, in the reset period t1, the potential of the first control signal is 22V, and the potential of the second control signal is-8V. The first transistor T1 is turned on, the second transistor T2 is turned on, the reset signal R is transmitted to the first node a through the first transistor T1 to remove a signal remaining in the light emitting device L at a previous stage to reset the light emitting device L, the reference potential of the data signal D is transmitted to the first terminal of the storage capacitor C through the third transistor T3, and the reference potential of the data signal D may be 0V. Due to the coupling effect of the storage capacitor C, the potential of the second end of the storage capacitor C is raised to a corresponding potential, that is, the potential of the second node b is raised to a potential that can turn on the fourth transistor T4, it should be noted that the fourth transistor T4 may be the same as the third transistor T3, that is, when the potential of the gate of the fourth transistor T4 is greater than-8V, the fourth transistor is turned on. That is, in some embodiments, the potential of the second node b may be raised to the reference potential 0V of the data signal D, thereby turning on the fourth transistor T4.
In the threshold voltage obtaining stage T2, the first control signal Y is at a low potential, the second control signal E is at a high potential, the third transistor T3 is turned on, the fourth transistor T4 is turned on, the first power signal H charges the storage capacitor through the second transistor T2, the storage capacitor is turned off until a voltage difference between a gate and a source of the fourth transistor T4 is equal to a threshold voltage Vth of the fourth transistor, a potential of a source of the fourth transistor T4 is a potential Vw of the second power signal W, that is, when the fourth transistor T4 is turned off, a potential of a gate of the fourth transistor T4 is equal to Vw + | Vth |.
For example, the potential of the first control signal Y is 0V, the potential of the second control signal E is 22V, the third transistor T3 is turned on, the fourth transistor T4 is turned on, the first power signal H charges the storage capacitor through the second transistor T2, and is turned off until the voltage difference between the gate and the source of the fourth transistor T4 is equal to the threshold voltage Vth of the fourth transistor, the potential of the source of the fourth transistor T4 is the potential Vw of the second power signal W, that is, when the fourth transistor T4 is turned off, the potential of the gate of the fourth transistor T4 is equal to Vw + | Vth |.
In the data writing period T3, the first control signal Y is at a high level, the second control signal E is at a low level, the first transistor T1 is turned on, the second transistor T2 is turned on, the data signal D is transmitted to the first end of the storage capacitor C through the third transistor T3, the potential of the second node b jumps to a corresponding potential according to the coupling effect of the storage capacitor C, and the potential Vd + Vw + | Vth | of the second node b, that is, the potential of the gate of the fourth transistor T4 is Vd + Vw + | Vth |.
For example, the potential of the first control signal Y is 22V, the potential of the second control signal E is-8V, the first transistor T1 is turned on, the second transistor T2 is turned on, the display potential of the data signal D is transmitted to the first terminal of the storage capacitor C through the third transistor T3, the display potential of the data signal D may be 8V, and the potential of the second node b jumps to the display potential 8V of the data signal D according to the coupling effect of the storage capacitor C.
In the light emitting period T4, the first control signal Y is at a low potential, the second control signal E is at a low potential, the fourth transistor T4 is turned on, due to the coupling effect of the storage capacitor C, the potential Vd + Vw + | Vth | at the second node b, i.e., the potential Vd + Vw + | Vth | at the gate of the fourth transistor T4, and the first power signal H is transmitted to the cathode of the light emitting device L through the anode of the light emitting device L, i.e., the first power signal H is transmitted to the first node a through the light emitting device L, i.e., the potential Vh at the drain of the fourth transistor T4 is the potential Vh of the first power signal H. At this time, the driving current Id corresponding to the gate-source voltage of the fourth transistor T4 is supplied to the light emitting device D, causing the light emitting device D to emit light, and the driving current Id generated by the fourth transistor T4 is expressed by the following equation:
Id＝k(Vgs-Vth)2＝k[Vd+Vw+|Vth|-Vw)-|Vth|]2＝k(Vd)2。
in this equation, Id denotes a current flowing through the light emitting device D, Vgs denotes a gate-source voltage of the fourth transistor T4, Vth denotes a threshold voltage of the fourth transistor T4, Vd denotes a potential of the data signal Z, and k denotes a constant. The analysis of the above formula shows that: the drive current Id of the pixel compensation circuit will be independent of Vth and Vw. Therefore, the stability of light emission of the light emitting device is improved, and the image quality is improved.
The application provides a pixel drive circuit and display panel, the pixel drive circuit who adopts 4T1C structure carries out effective compensation to the threshold voltage of the drive transistor in every pixel to, the drive current of light emitting device does not receive the influence of first power signal, consequently, has improved the luminous stability of light emitting device, and then has improved the picture quality.
The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.
Claims (4)
1. A pixel driving circuit, comprising: the device comprises a reset module, a compensation module, a data writing module and a light emitting module; the reset module, the data writing module and the light-emitting module are all connected with the compensation module;
the reset module is connected with a first control signal and is used for transmitting a reset signal to the light-emitting module under the control of the first control signal so as to reset the light-emitting module for the first time;
the data writing module is connected to the first control signal and is used for resetting the light emitting module for the second time through the reference potential of the data signal under the control of the first control signal;
the compensation module is connected to a second control signal and is used for acquiring a threshold voltage under the control of the second control signal;
the data writing module is also used for transmitting the display potential of the data signal to the compensation module under the control of the first control signal;
the compensation module comprises a second transistor and a storage capacitor, wherein the grid electrode of the second transistor is electrically connected to the second control signal, the drain electrode of the second transistor is electrically connected to a first node, the source electrode of the second transistor is electrically connected to a second node, the first end of the storage capacitor is electrically connected to the data writing module, and the second end of the storage capacitor is electrically connected to the second node;
the light emitting module comprises a light emitting device and a fourth transistor, wherein the anode of the light emitting device is electrically connected to a first power signal, the cathode of the light emitting device is electrically connected to the first node, the gate of the fourth transistor is electrically connected to the second node, the drain of the fourth transistor is electrically connected to the first node, and the source of the fourth transistor is electrically connected to a second power signal;
the driving timing of the pixel driving circuit includes:
a reset phase for resetting the potential of the first node and the potential of the second node;
a threshold voltage obtaining stage, namely capturing the threshold voltage of the fourth transistor and storing the threshold voltage on the storage capacitor;
a data writing stage, writing the data signal into a first end of the storage capacitor, and jumping the potential of a second end of the storage capacitor to a corresponding potential according to the coupling action of the storage capacitor;
in the light emitting stage, a pixel driving circuit generates a driving current and supplies the driving current to the light emitting device for driving the light emitting display of the light emitting device;
the reset module includes: a first transistor;
a gate of the first transistor is electrically connected to the first control signal, a drain of the first transistor is electrically connected to the reset signal, and a source of the first transistor is electrically connected to a first node;
the data writing module comprises: a third transistor;
a gate of the third transistor is electrically connected to the first control signal, a drain of the third transistor is electrically connected to the data signal, and a source of the third transistor is electrically connected to the first end of the storage capacitor;
in the reset phase, the first control signal is at a high potential, the second control signal is at a low potential, the reset signal is transmitted to the first node through the first transistor, the data signal is transmitted to the first end of the storage capacitor through the third transistor, and the potential of the second node jumps to a potential corresponding to the data signal according to the coupling effect of the storage capacitor;
in a threshold voltage obtaining stage, the first control signal is at a low potential, the second control signal is at a high potential, and the first power supply signal charges the storage capacitor through the second transistor until a voltage difference between a gate and a source of the fourth transistor is equal to a threshold voltage of the fourth transistor;
in a data writing stage, the first control signal is at a high potential, the second control signal is at a low potential, the data signal is transmitted to the first end of the storage capacitor through the third transistor, and the potential of the second node jumps to a corresponding potential according to the coupling effect of the storage capacitor;
in the light emitting stage, the first control signal is at a low potential, the second control signal is at a low potential, the power signal is transmitted to the cathode of the light emitting device through the anode of the light emitting device, and the light emitting device emits light.
2. The pixel driving circuit according to claim 1, wherein the first transistor, the second transistor, the third transistor, and the fourth transistor are all N-type transistors.
3. The pixel driving circuit according to claim 1, wherein the first control signal and the second control signal are both provided by an external timer.
4. A display panel comprising the pixel drive circuit according to any one of claims 1 to 3.
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| CN201910382279.7A CN110232889B (en) | 2019-05-09 | 2019-05-09 | Pixel driving circuit and display panel |
| PCT/CN2019/112960 WO2020224196A1 (en) | 2019-05-09 | 2019-10-24 | Pixel drive circuit and display panel |
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| CN110232889B (en) * | 2019-05-09 | 2021-07-06 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN111063295B (en) * | 2019-12-31 | 2021-05-07 | 深圳市华星光电半导体显示技术有限公司 | Driving device and driving method of light emitting diode array panel |
| CN112669775B (en) * | 2020-12-30 | 2024-04-19 | 视涯科技股份有限公司 | Display panel, driving method and display device |
| CN113284462B (en) | 2021-05-31 | 2022-06-10 | 深圳市华星光电半导体显示技术有限公司 | Pixel compensation circuit, method and display panel |
| CN114299847B (en) * | 2021-12-23 | 2023-06-02 | 深圳市华星光电半导体显示技术有限公司 | Light emitting device driving circuit and display panel |
| CN114120883B (en) * | 2022-01-27 | 2022-05-24 | 深圳晶微峰光电科技有限公司 | Pixel circuit, display device, and display control method for pixel circuit |
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| WO2020224196A1 (en) | 2020-11-12 |
| CN110232889A (en) | 2019-09-13 |
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