CN109979383B - Pixel driving circuit and display panel - Google Patents
Pixel driving circuit and display panel Download PDFInfo
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- CN109979383B CN109979383B CN201910331944.XA CN201910331944A CN109979383B CN 109979383 B CN109979383 B CN 109979383B CN 201910331944 A CN201910331944 A CN 201910331944A CN 109979383 B CN109979383 B CN 109979383B
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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]
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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
- 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
Abstract
The application provides a pixel drive circuit and display panel adopts the pixel drive circuit of 4T2C structure, increases a voltage-stabilizing capacitor at the grid of third transistor, reduces the influence to first node when first transistor closes to reach the purpose that improves luminescent device's luminous homogeneity, and then promote 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. However, when the conventional pixel driving circuit detects the mobility of the driving transistor, the mobility of each driving transistor is greatly different when the transistor connected to the driving transistor is turned off, which affects the uniformity of the display panel after compensation.
Disclosure of Invention
The embodiment of the application provides a pixel driving circuit and a display panel, when a transistor connected with a driving transistor is turned off, the difference between the mobility rates of the driving transistors can be reduced, and therefore the uniformity of the display panel after compensation is improved.
In a first aspect, the present application provides a pixel driving circuit, comprising: the device comprises a compensation module, a receiving module, a light emitting module and a detection module; the compensation module, the receiving module and the detection module are all connected with the light emitting module;
the compensation module is accessed to a first control signal and is used for transmitting a data signal to a first node under the control of the first control signal;
the receiving module is connected to a second control signal and used for stabilizing the potential of the first node through a power supply signal under the control of the second control signal;
the detection module receives a third control signal, the detection module is used for transmitting an initial signal to a second node under the control of the third control signal, and the detection module is further used for detecting the actual voltage of the light-emitting module and comparing the actual voltage with a preset voltage to generate a compensation voltage of the light-emitting module;
the compensation module is further configured to compensate the data signal according to the compensation voltage under the control of the first control signal, and transmit the compensated data signal to the first node.
In the pixel driving circuit provided by the present application, the compensation module includes: a first transistor;
the gate of the first transistor is electrically connected to the first control signal, the source of the first transistor is electrically connected to the data signal, and the drain of the first transistor is electrically connected to the first node.
In the pixel driving circuit provided by the present application, the first receiving module includes: a second transistor and a voltage stabilizing capacitor;
the grid electrode of the second transistor is electrically connected to the second control signal, the source electrode of the second transistor is electrically connected to the power supply signal, and the drain electrode of the second transistor is electrically connected to the voltage stabilizing capacitor;
the first end of the voltage-stabilizing capacitor is electrically connected to the drain electrode of the second transistor, and the second end of the voltage-stabilizing capacitor is electrically connected to the first node.
In the pixel driving circuit provided by the present application, the light emitting module includes: a third transistor, a light emitting device, and a storage capacitor;
a gate of the third transistor is electrically connected to the first node, a source of the third transistor is electrically connected to the power signal, and a drain of the third transistor is electrically connected to the second node;
the cathode end of the light-emitting device is electrically connected to the second node, and the anode end of the light-emitting device is electrically connected to the ground end;
the first end of the storage capacitor is electrically connected to the first node, 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 detection module includes: a fourth transistor, a first switch, a second switch and a detection unit;
a gate of the fourth transistor is electrically connected to the third control signal, a source of the fourth transistor is electrically connected to the first switch, and a drain of the second transistor is electrically connected to the second node;
a first end of the first switch is electrically connected to the source of the fourth transistor, and a second end of the first switch is electrically connected to the initial signal;
the first end of the second switch is electrically connected to the second receiving module, the second end of the second switch is electrically connected to the detecting unit, and the detecting unit is used for detecting the actual voltage of the light-emitting module and comparing the actual voltage with a preset voltage to generate the compensation voltage of the light-emitting module.
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 N-type transistors.
In the pixel driving circuit provided by the present application, the driving timing of the pixel driving circuit includes:
a first initialization stage for initializing the potential of the second node;
a second initialization stage for initializing the potential of the first node;
a detection stage, detecting the actual voltage of the light emitting module, and comparing the actual voltage with a preset voltage to generate a compensation voltage of the light emitting module;
a compensation stage, compensating the data signal according to the compensation voltage;
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 first initialization stage, the first control signal is at a low potential, the second control signal is at a low potential, the third control signal is at a high potential, and the initial signal is transmitted to the second node;
in the second initialization stage, the first control signal is at a high potential, the second control signal is at a high potential, the third control signal is at a high potential, the data signal is transmitted to the first node, and the power signal is transmitted to the first end of the voltage stabilizing capacitor to charge the voltage stabilizing capacitor;
in the detection stage, the first control signal is at a low potential, the second control signal is at a high potential, the third control signal is at a high potential, and the power supply signal is transmitted to the first end of the voltage stabilizing capacitor to stabilize the potential of the first node; when the first switch is opened, the initial signal is transmitted to the second node; when the second switch is turned on, a detection signal is transmitted to the second node, the detection unit detects the potential of the second node to detect the actual voltage of the light emitting module, and calculates the difference between the actual voltage and the preset voltage to calculate the compensation voltage of the light emitting module;
in the compensation stage, the first control signal is at a high potential, the second control signal is at a low potential, the third control signal is at a high potential, and the first transistor compensates the data signal according to the compensation voltage;
in the light emitting stage, the first control signal is at a low potential, the second control signal is at a low potential, the third control signal is at a low potential, the data signal is transmitted to a first node, the second power signal is transmitted to a second node, the first node maintains the potential of the compensated data signal, and the power signal is transmitted to the light emitting device.
In the pixel driving circuit provided by the present application, the first control signal, the second control signal, and the third control signal are all provided by an external sequencer.
In a second aspect, the present application provides a display panel comprising the pixel driving circuit of any of the examples of the present application.
The application provides a pixel driving circuit and display panel, through increase a voltage-stabilizing capacitor at the grid of third transistor, reduce the influence to first node when third transistor closes to reach the purpose that improves luminescent device's luminous homogeneity, and then promote 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 an embodiment of the present disclosure. As shown in fig. 1, a pixel driving circuit provided in an embodiment of the present application includes: a compensation module 101, a receiving module 102, a light emitting module 103, and a detection module 104. The compensation module 101, the receiving module 102 and the detection module 104 are all connected with the light emitting module 103.
The compensation module 101 is connected to the first control signal X, and the compensation module 101 is configured to transmit the data signal Z to the first node a under the control of the first control signal X. The receiving module 102 is connected to the second control signal E, and the receiving module 102 is configured to stabilize the potential of the first node a through the power signal VDD under the control of the second control signal E. The detection module 104 receives the third control signal Y, the detection module 104 is configured to transmit the initial signal Pre to the second node b under the control of the third control signal Y, and the detection module 104 is further configured to detect an actual voltage of the light emitting module 103 and compare the actual voltage with a preset voltage to generate a compensation voltage of the light emitting module 103. In addition, the compensation module 101 is further configured to compensate the data signal Z according to the compensation voltage under the control of the first control signal X, and transmit the compensated data signal Z to the first node a.
Specifically, referring to fig. 2, fig. 2 is a circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure.
The compensation module 101 includes: the first transistor T1. The gate of the first transistor T1 is electrically connected to the first control signal X, the source of the first transistor T1 is electrically connected to the data signal Z, and the drain of the first transistor is electrically connected to the first node a.
The receiving module 102 includes: a second transistor T2 and a voltage stabilizing capacitor C1. The gate of the second transistor T2 is electrically connected to the second control signal E, the source of the second transistor T2 is electrically connected to the power signal VDD, and the drain of the second transistor T2 is electrically connected to the voltage-stabilizing capacitor C1. A first end of the voltage-stabilizing capacitor C1 is electrically connected to the drain of the second transistor T2, and a second end of the voltage-stabilizing capacitor C1 is electrically connected to the first node a.
The light emitting module 103 includes: a third transistor T3, a light emitting device D, and a storage capacitor C2. The gate of the third transistor T3 is electrically connected to the first node a, the source of the third transistor T2 is electrically connected to the power signal VDD, and the drain of the third transistor T3 is electrically connected to the second node b, in this application, the driving transistor is the third transistor T3. The cathode terminal of the light emitting device D is electrically connected to the second node b, and the anode terminal of the light emitting device D is electrically connected to the ground terminal. The first terminal of the storage capacitor C2 is electrically connected to the first node a, and the second terminal of the storage capacitor C2 is electrically connected to the second node b. In some embodiments, the light emitting device D is an organic light emitting diode.
The detection module 104 includes: a fourth transistor T4, a first switch S1, a second switch S2, and a probe unit 104 a. The gate of the fourth transistor T4 is electrically connected to the third control signal Y, the source of the fourth transistor T4 is electrically connected to the first switch S1, and the drain of the fourth transistor T4 is electrically connected to the second node b. The first terminal of the first switch S1 is electrically connected to the source of the fourth transistor T4, and the second terminal of the first switch S1 is electrically connected to the initial signal Pre. A first terminal of the second switch S2 is electrically connected to the source of the fourth transistor T4, and a second terminal of the second switch S2 is electrically connected to the detecting unit 104 a. The detection unit 104a is used for detecting an actual voltage of the light emitting module 103 and comparing the actual voltage with a preset voltage to generate a compensation voltage of the light emitting module 103.
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.
In some embodiments, the first control signal X, the second control signal E, and the third control signal Y are all provided by an external sequencer.
When the pixel driving circuit detects the mobility of the third transistor T3, due to different impedances at different positions in the display panel, when the first transistor T1 is turned off, the difference in mobility detection of the third transistor T3 at each point of the display panel is large, that is, when the detection is performed, the voltages of the gate points of the third transistors T3 are different, and the currents at the gate points of the third transistors T3 are different, so that the raising speeds of the drain point potentials of the third transistors T3 are different, and finally, the difference in mobility of the third transistors T3 at different positions of the display panel is detected, which affects the uniformity of the display panel after compensation.
For example, when the conventional pixel driving circuit detects the mobility of the third transistor T3 and the mobility is drifting, the drain point potential of the third transistor T3 is raised at different speeds, and finally the mobility of the third transistor T3 at different positions of the display panel is detected to be different, where the mobility of the third transistor T3 at the near end is 52.41%, and the mobility of the third transistor T3 at the far end is 51.17%.
For another example, when the conventional pixel driving circuit detects the mobility of the third transistor T3 and the mobility is negatively floated, the drain potential of the third transistor T3 is raised at different speeds, and finally the mobility of the third transistor T3 at different positions of the display panel is detected to be different, where the mobility of the third transistor T3 at the near end is 143.1%, and the mobility of the third transistor T3 at the far end is 148.7%.
Therefore, in the present application, a voltage stabilizing capacitor C1 is added to the gate of the third transistor T3, the second transistor T2 is turned on before the first transistor T1 is turned off, and the voltage stabilizing capacitor C1 is charged by the power signal VDD, so that the influence on the first node a when the first transistor T1 is turned off is reduced, and the purpose of improving the uniformity of light emission of the light emitting device D is achieved, thereby improving the image quality.
For example, in the pixel driving circuit of the present application, since the voltage stabilizing capacitor C1 maintains the potential of the first node a, the difference in the rising speed of the drain potential of the driving transistor is small, and when the drain potential of the driving transistor is floating, the mobility of the third transistor T3 at the near end is 51.73%, and the mobility of the third transistor T3 at the far end is 51.48%; when floating, the mobility of the near third transistor T3 is 144.8%, and the mobility of the far third transistor T3 is 146.1%. Thus, in the present application, the third transistor T3 at the near end
Referring to fig. 3, fig. 3 is a timing diagram of driving signals of a pixel driving circuit according to the present application. The driving timing of the pixel driving circuit includes:
the first initialization phase t1 initializes the potential of the second node b.
In the second initialization phase t2, the potential of the first node a is initialized.
The detection phase t3 detects the actual voltage of the light emitting module 103 and compares the actual voltage with a preset voltage to generate a compensation voltage of the light emitting module 103.
And a compensation stage t4 for compensating the data signal Z according to the compensation voltage.
During the light emitting period t5, the pixel driving circuit generates a driving current and supplies the driving current to the light emitting device D for driving the light emitting display of the light emitting device D.
Specifically, in the first initialization period T1, the first control signal X is at a low level, the second control signal E is at a low level, the third control signal Y is at a high level, the fourth transistor T4 is turned on, the first switch S1 is turned on, and the initialization signal Pre is transmitted to the second node b.
In the second initialization stage T2, the first control signal X is at a high level, the second control signal E is at a high level, the third control signal Y is at a high level, the first transistor T1 is turned on, the second transistor T2 is turned on, the third transistor T3 is turned on, the fourth transistor T4 is turned on, the first switch S1 is turned on, the data signal Z is transmitted to the first node a through the first transistor T1, and the power signal VDD is transmitted to the first end of the voltage stabilizing capacitor C1 through the second transistor T2 to charge the voltage stabilizing capacitor C1.
In the probing period T3, the first control signal X is at a low level, the second control signal E is at a high level, the third control signal Y is at a high level, and the power signal VDD is transmitted to the first terminal of the voltage-stabilizing capacitor C1 through the second transistor T2 to stabilize the voltage level of the first node a. When the first switch S1 is turned on, the initial signal Pre is transmitted to the second node b through the fourth transistor T4. When the second switch S2 is turned on, the detection signal T is transmitted to the second node b through the fourth transistor T4, the detection unit 104a detects the potential of the second node b through the detection signal T to detect the actual voltage of the light emitting module 103, and calculates the difference between the actual voltage and the preset voltage to obtain the compensation voltage of the light emitting module 103.
In the compensation period T4, the first control signal X is at a high level, the second control signal E is at a low level, the third control signal Y is at a high level, the first transistor T1 is turned on, and the first transistor T1 compensates the data signal according to the compensation voltage.
In the light emitting period T5, the first control signal X is at a low potential, the second control signal E is at a low potential, the third control signal Y is at a low potential, the first node a holds the potential of the compensated data signal Z, the third transistor T3 is turned on, the power signal VDD is transmitted to the light emitting device D through the third transistor T3, and the light emitting device D emits light.
The application provides a pixel driving circuit and display panel adopts 4T2C structure pixel driving circuit, increases a voltage-stabilizing capacitor at the grid of third transistor, reduces the influence to first node when third transistor closes to reach the purpose that improves luminescent device's luminous homogeneity, and then promote 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 (8)
1. A pixel driving circuit, comprising: the device comprises a compensation module, a receiving module, a light emitting module and a detection module; the compensation module, the receiving module and the detection module are all connected with the light emitting module;
the compensation module is accessed to a first control signal and is used for transmitting a data signal to a first node under the control of the first control signal;
the receiving module is connected to a second control signal and used for stabilizing the potential of the first node through a power supply signal under the control of the second control signal;
the detection module receives a third control signal, the detection module is used for transmitting an initial signal to a second node under the control of the third control signal, and the detection module is further used for detecting the actual voltage of the light-emitting module and comparing the actual voltage with a preset voltage to generate a compensation voltage of the light-emitting module;
the compensation module is further configured to compensate the data signal according to the compensation voltage under the control of the first control signal, and transmit the compensated data signal to the first node;
the compensation module includes: a first transistor;
a gate of the first transistor is electrically connected to the first control signal, a source of the first transistor is electrically connected to the data signal, and a drain of the first transistor is electrically connected to the first node;
the receiving module includes: a second transistor and a voltage stabilizing capacitor;
the grid electrode of the second transistor is electrically connected to the second control signal, the source electrode of the second transistor is electrically connected to the power supply signal, and the drain electrode of the second transistor is electrically connected to the voltage stabilizing capacitor;
the first end of the voltage-stabilizing capacitor is electrically connected to the drain electrode of the second transistor, and the second end of the voltage-stabilizing capacitor is electrically connected to the first node.
2. The pixel driving circuit according to claim 1, wherein the light emitting module comprises: a third transistor, a light emitting device, and a storage capacitor;
a gate of the third transistor is electrically connected to the first node, a source of the third transistor is electrically connected to the power signal, and a drain of the third transistor is electrically connected to the second node;
the anode end of the light-emitting device is electrically connected to the second node, and the cathode end of the light-emitting device is electrically connected to the ground end;
the first end of the storage capacitor is electrically connected to the first node, and the second end of the storage capacitor is electrically connected to the second node.
3. The pixel driving circuit according to claim 2, wherein the detection module comprises: a fourth transistor, a first switch, a second switch and a detection unit;
a gate of the fourth transistor is electrically connected to the third control signal, a source of the fourth transistor is electrically connected to the first switch, and a drain of the fourth transistor is electrically connected to the second node;
a first end of the first switch is electrically connected to the source of the fourth transistor, and a second end of the first switch is electrically connected to the initial signal;
the first end of the second switch is electrically connected to the source of the fourth transistor, the second end of the second switch is electrically connected to the detection unit, and the detection unit is used for detecting the actual voltage of the light-emitting module and comparing the actual voltage with a preset voltage to generate the compensation voltage of the light-emitting module.
4. The pixel driving circuit according to claim 3, wherein the first transistor, the second transistor, the third transistor, and the fourth transistor are all N-type transistors.
5. The pixel driving circuit according to claim 4, wherein the driving timing of the pixel driving circuit comprises:
a first initialization stage for initializing the potential of the second node;
a second initialization stage for initializing the potential of the first node;
a detection stage, detecting the actual voltage of the light emitting module, and comparing the actual voltage with a preset voltage to generate a compensation voltage of the light emitting module;
a compensation stage, compensating the data signal according to the compensation voltage;
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.
6. The pixel driving circuit according to claim 5, wherein in the first initialization phase, the first control signal is at a low potential, the second control signal is at a low potential, the third control signal is at a high potential, and the initial signal is transmitted to the second node; in the second initialization stage, the first control signal is at a high potential, the second control signal is at a high potential, the third control signal is at a high potential, the data signal is transmitted to the first node, and the power signal is transmitted to the first end of the voltage stabilizing capacitor to charge the voltage stabilizing capacitor;
in the detection stage, the first control signal is at a low potential, the second control signal is at a high potential, the third control signal is at a high potential, and the power supply signal is transmitted to the first end of the voltage stabilizing capacitor to stabilize the potential of the first node; when the first switch is opened, the initial signal is transmitted to the second node; when the second switch is turned on, a detection signal is transmitted to the second node, the detection unit detects the potential of the second node to detect the actual voltage of the light emitting module, and calculates the difference between the actual voltage and the preset voltage to calculate the compensation voltage of the light emitting module;
in the compensation stage, the first control signal is at a high potential, the second control signal is at a low potential, the third control signal is at a high potential, and the first transistor compensates the data signal according to the compensation voltage;
in the light emitting stage, the first control signal is at a low potential, the second control signal is at a low potential, the third control signal is at a low potential, the data signal is transmitted to a first node, the first node holds the potential of the compensated data signal, the third transistor is turned on, and the power signal is transmitted to the light emitting device through the third transistor.
7. The pixel driving circuit according to claim 1, wherein the first control signal, the second control signal, and the third control signal are all provided by an external sequencer.
8. A display panel comprising the pixel drive circuit according to any one of claims 1 to 7.
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| CN201910331944.XA CN109979383B (en) | 2019-04-24 | 2019-04-24 | Pixel driving circuit and display panel |
| PCT/CN2019/114400 WO2020215647A1 (en) | 2019-04-24 | 2019-10-30 | Pixel driving circuit and display panel |
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| CN201910331944.XA CN109979383B (en) | 2019-04-24 | 2019-04-24 | Pixel driving circuit and display panel |
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| CN109979383B (en) * | 2019-04-24 | 2021-04-02 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN110706650A (en) * | 2019-09-17 | 2020-01-17 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit |
| CN110689837B (en) * | 2019-10-29 | 2023-11-28 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN110890065B (en) * | 2019-11-01 | 2021-04-27 | 深圳市华星光电半导体显示技术有限公司 | Control method and control device of display panel |
| CN110853582B (en) * | 2019-11-07 | 2021-02-23 | 深圳市华星光电半导体显示技术有限公司 | Pixel, control method thereof and organic light emitting diode display |
| CN110992897B (en) * | 2019-12-31 | 2021-03-16 | 深圳市华星光电半导体显示技术有限公司 | Display panel driving method, display driving circuit and display panel |
| CN112365846B (en) * | 2020-11-12 | 2021-10-08 | 深圳市华星光电半导体显示技术有限公司 | Pixel circuit and display device |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5952789A (en) * | 1997-04-14 | 1999-09-14 | Sarnoff Corporation | Active matrix organic light emitting diode (amoled) display pixel structure and data load/illuminate circuit therefor |
| JP4049018B2 (en) * | 2003-05-19 | 2008-02-20 | ソニー株式会社 | Pixel circuit, display device, and driving method of pixel circuit |
| GB0400216D0 (en) * | 2004-01-07 | 2004-02-11 | Koninkl Philips Electronics Nv | Electroluminescent display devices |
| KR100824854B1 (en) * | 2006-12-21 | 2008-04-23 | 삼성에스디아이 주식회사 | Organic light emitting display |
| JP5010030B2 (en) * | 2008-07-04 | 2012-08-29 | パナソニック株式会社 | Display device and control method thereof |
| US8854346B2 (en) * | 2009-11-06 | 2014-10-07 | Sharp Kabushiki Kaisha | Pixel circuit and display device |
| KR101536129B1 (en) * | 2011-10-04 | 2015-07-14 | 엘지디스플레이 주식회사 | Organic light-emitting display device |
| KR101528147B1 (en) * | 2011-10-14 | 2015-06-12 | 엘지디스플레이 주식회사 | Light emitting display device |
| CN102891183B (en) * | 2012-10-25 | 2015-09-30 | 深圳市华星光电技术有限公司 | Thin-film transistor and active matrix flat panel display device |
| CN203179479U (en) * | 2013-04-26 | 2013-09-04 | 京东方科技集团股份有限公司 | Pixel unit circuit and display apparatus |
| KR102013377B1 (en) * | 2013-08-19 | 2019-10-21 | 엘지디스플레이 주식회사 | Organic Light Emitting Display Device and Driving Method thereof |
| KR102053444B1 (en) * | 2013-11-06 | 2019-12-06 | 엘지디스플레이 주식회사 | Organic Light Emitting Display And Mobility Compensation Method Thereof |
| CN103700695B (en) * | 2013-12-25 | 2017-11-03 | 深圳市华星光电技术有限公司 | Low-temperature polysilicon film and preparation method thereof, transistor |
| KR102281007B1 (en) * | 2014-09-01 | 2021-07-26 | 엘지디스플레이 주식회사 | Organic Light Emitting Display Device |
| KR102234021B1 (en) * | 2014-09-19 | 2021-03-31 | 엘지디스플레이 주식회사 | Organic light emitting display |
| CN105185300B (en) * | 2015-08-03 | 2017-07-28 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuits and image element driving method |
| CN105047137B (en) * | 2015-09-09 | 2017-05-31 | 深圳市华星光电技术有限公司 | AMOLED real-time compensation systems |
| CN105702214B (en) * | 2016-04-12 | 2018-03-06 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuits and image element driving method |
| CN106297662B (en) * | 2016-09-09 | 2018-06-01 | 深圳市华星光电技术有限公司 | AMOLED pixel-driving circuits and driving method |
| KR102526355B1 (en) * | 2016-09-22 | 2023-05-02 | 엘지디스플레이 주식회사 | Organic Light Emitting Display Device |
| CN106782324B (en) * | 2017-02-17 | 2019-03-22 | 京东方科技集团股份有限公司 | Pixel circuit and its driving method, display device |
| CN106910459B (en) * | 2017-04-26 | 2019-01-25 | 上海天马有机发光显示技术有限公司 | A kind of organic light emitting display panel, its driving method and display device |
| CN108154834B (en) * | 2018-03-15 | 2021-04-27 | 京东方科技集团股份有限公司 | Electroluminescent display panel and cross-voltage detection method of light emitting device |
| CN109979383B (en) * | 2019-04-24 | 2021-04-02 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
-
2019
- 2019-04-24 CN CN201910331944.XA patent/CN109979383B/en active Active
- 2019-10-30 WO PCT/CN2019/114400 patent/WO2020215647A1/en active Application Filing
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| Publication number | Publication date |
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| CN109979383A (en) | 2019-07-05 |
| WO2020215647A1 (en) | 2020-10-29 |
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