CN112397030A - Pixel driving circuit and OLED display panel - Google Patents
Pixel driving circuit and OLED display panel Download PDFInfo
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- CN112397030A CN112397030A CN202011285442.7A CN202011285442A CN112397030A CN 112397030 A CN112397030 A CN 112397030A CN 202011285442 A CN202011285442 A CN 202011285442A CN 112397030 A CN112397030 A CN 112397030A
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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
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Abstract
The present application provides a pixel driving circuit comprising: the light-emitting device is connected in series with a light-emitting loop formed by the first power signal and the second power signal; the driving transistor is connected in series with the light-emitting loop and used for controlling the current flowing through the light-emitting loop; the grid electrode of the first reset transistor is connected with a first scanning signal, the source electrode of the first reset transistor is connected with a first reset signal, and the drain electrode of the first reset transistor is electrically connected with the grid electrode of the driving transistor; the grid electrode of the clamping transistor is connected with the second scanning signal, the source electrode of the clamping transistor is electrically connected with the drain electrode of the driving transistor, and the drain electrode of the clamping transistor is electrically connected with the grid electrode of the driving transistor; the first reset transistor and/or the clamp transistor is a double-gate transistor. In the OLED pixel driving circuit, the first reset transistor and/or the clamping transistor are/is a double-gate transistor, so that the phenomenon that the leakage current of the transistor is increased due to a photovoltaic effect can be avoided, the leakage current of the transistor can be effectively reduced, and the OLED display panel has a more stable display effect.
Description
Technical Field
The application relates to the technical field of display, in particular to a pixel driving circuit and an OLED display panel.
Background
An OLED (Organic Light Emitting Diode) display panel has the advantages of high brightness, wide viewing angle, fast response speed, low power consumption, and the like, and is widely applied to the field of high-performance display. With the development of multimedia, display panels are becoming more and more important. Accordingly, the requirements for various types of display devices are increasing, especially in the field of smart phones, and ultrahigh frequency driving display, low power consumption driving display and low frequency driving display are all development demand directions at present and in the future.
However, in the conventional pixel driving circuit, under the illumination condition, the leakage current of the transistor is increased due to the photovoltaic effect, and thus the display effect of the OLED display panel is poor under the condition of a low refresh frequency.
Disclosure of Invention
The application provides a pixel driving circuit and an OLED display panel, can effectively reduce the leakage current of a low transistor, and enables the OLED display panel to have a more stable display effect.
In a first aspect, the present application provides a pixel driving circuit, comprising:
the light-emitting device is connected in series with a light-emitting loop formed by the first power signal and the second power signal;
the driving transistor is connected in series with the light-emitting loop and used for controlling the current flowing through the light-emitting loop;
the grid electrode of the first reset transistor is connected with a first scanning signal, the source electrode of the first reset transistor is connected with a first reset signal, and the drain electrode of the first reset transistor is electrically connected with the grid electrode of the driving transistor; and
the grid electrode of the clamping transistor is connected with a second scanning signal, the source electrode of the clamping transistor is electrically connected with the drain electrode of the driving transistor, and the drain electrode of the clamping transistor is electrically connected with the grid electrode of the driving transistor; wherein the content of the first and second substances,
the first reset transistor and/or the clamp transistor are double-gate transistors.
In the pixel driving circuit provided by the application, the OLED pixel driving circuit further comprises a second reset transistor;
the grid electrode of the second reset transistor is connected with a third scanning signal, the source electrode of the second reset transistor is connected with a second reset signal, and the drain electrode of the second reset transistor is electrically connected with the anode of the light-emitting device.
In the pixel driving circuit provided by the present application, the pixel driving circuit further includes a writing transistor;
the gate of the writing transistor is connected to the third scanning signal, the source of the writing transistor is connected to the data signal, and the drain of the writing transistor is electrically connected to the source of the driving transistor.
In the pixel driving circuit provided by the present application, the pixel driving circuit further includes a storage capacitor;
the first end of the storage capacitor is connected to the first power supply signal, and the second end of the storage capacitor is electrically connected with the grid electrode of the driving transistor.
In the pixel driving circuit provided by the present application, the pixel driving circuit further includes a first light emission control transistor and a second light emission control transistor;
a grid electrode of the first light-emitting control transistor is connected with a light-emitting control signal, a source electrode of the first light-emitting control transistor is connected with the first power supply signal, and a drain electrode of the first light-emitting control transistor is electrically connected with a source electrode of the driving transistor;
the grid electrode of the second light-emitting control transistor is connected with the light-emitting control signal, the source electrode of the second light-emitting control transistor is electrically connected with the drain electrode of the driving transistor, and the drain electrode of the second light-emitting control transistor is electrically connected with the anode of the light-emitting device.
In the pixel driving circuit provided by the application, the first reset transistor and the clamp transistor are indium gallium zinc oxide thin film transistors; the driving transistor, the second reset transistor, the writing transistor, the first light-emitting control transistor and the second light-emitting control transistor are all low-temperature polycrystalline silicon thin film transistors.
In the pixel driving circuit provided by the present application, the first reset transistor and the clamp transistor are both N-type indium gallium zinc oxide thin film transistors.
In the pixel driving circuit provided by the present application, the driving transistor, the second reset transistor, the write transistor, the first light-emitting control transistor, and the second light-emitting control transistor are all P-type low-temperature polysilicon thin film transistors.
In the pixel driving circuit provided by the present application, a potential of the first power supply signal is not less than a potential of the second power supply signal.
In a second aspect, the present application further provides an OLED display panel including any one of the pixel driving circuits described above.
In the pixel driving circuit, because the first reset transistor and/or the clamping transistor adopt the double-gate transistor, the phenomenon that the leakage current of the transistor is increased due to a photovoltaic effect can be avoided, and the leakage current of the transistor can be effectively reduced, so that the OLED display panel has a more stable display effect; in addition, the signal for resetting the anode of the organic light-emitting diode and the signal for resetting the storage capacitor are supplied in two paths, so that the charge and discharge capacity of the transistor is improved, the charge and discharge time delay is reduced, the anode reset of the organic light-emitting diode is accelerated, and the switching speed from a bright state to a dark state or from the dark state to the bright state is accelerated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first circuit schematic diagram of a pixel driving circuit according to an embodiment of the present disclosure;
fig. 2 is a wiring diagram of a pixel driving circuit provided in an embodiment of the present application;
FIG. 3 is a timing diagram of a pixel driving circuit according to an embodiment of the present disclosure;
fig. 4 is a comparison graph of leakage current of a pixel driving circuit provided in the embodiment of the present application.
Fig. 5 is a second circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure;
FIG. 6 is a third circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure;
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 described embodiments are merely 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.
Referring to fig. 1 and fig. 2, fig. 1 is a first circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure; fig. 2 is a wiring schematic diagram of a pixel driving circuit provided in an embodiment of the present application. As shown in fig. 1 and 2, the present embodiment provides a pixel driving circuit including a light emitting device D1, a driving transistor T1, a clamp transistor T3, and a first reset transistor T4. It should be noted that the light emitting device D1 can be, but is not limited to, an OLED light emitting diode.
The light emitting device D1 is connected in series to a light emitting loop formed by a first power signal Vdd and a second power signal Vss. The potential of the first power supply signal Vdd is not less than the potential of the second power supply signal Vss. The driving transistor T1 is connected in series to the light emitting circuit. The gate of the first reset transistor T4 is connected to the first Scan signal Scan1, the source of the first reset transistor T4 is connected to the first reset signal VI _ Cst, and the drain of the first reset transistor T4 is electrically connected to the gate of the driving transistor T1. The gate of the clamp transistor T3 is connected to the second Scan signal Scan3, the source of the clamp transistor T3 is electrically connected to the drain of the driving transistor T1, and the drain of the clamp transistor T3 is electrically connected to the gate of the driving transistor T1.
In addition, since the source and the drain of the transistor used herein are symmetrical, the source and the 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 of the figure provides that the middle end of the transistor is a grid, the signal input end is a source, and the output end is a drain.
It is understood that the driving transistor T1 is used to control the current flowing through the light emitting loop. The first reset transistor T4 is used to control the gate of the driving transistor T1 to be reset to the potential of the first reset signal VI _ Cst according to the first Scan signal Scan 1. The clamp transistor T3 is used to clamp the potential of the gate of the driving transistor T1 to the potential of the source of the driving transistor T1 or the potential of the drain of the driving transistor T1 according to the second Scan signal Scan 3.
In the embodiment of the present application, the first reset transistor T4 and the clamp transistor T3 are double gate transistors. In the pixel driving circuit, the first reset transistor T4 and the clamp transistor T3 are dual-gate transistors, so that the increase of the leakage current of the transistors due to the photovoltaic effect can be avoided, and the leakage current of the transistors can be effectively reduced.
In one embodiment, the pixel driving circuit further includes a second reset transistor T7. The gate of the second reset transistor T7 is connected to the third Scan signal Scan2, the source of the second reset transistor T7 is connected to the second reset signal VI _ ANO, and the drain of the second reset transistor T7 is electrically connected to the anode of the light emitting device D1. The second reset transistor T7 is used to control the anode of the light emitting device D1 to be reset to the potential of the second reset signal VI _ ANO according to the third Scan signal Scan 2. The first reset signal VI _ Cst and the second reset signal VI _ ANO are respectively connected to different voltage signal lines, so that the first reset signal VI _ Cst and the second reset signal VI _ ANO can be independently controlled.
The embodiment of the application also enables the voltage difference amplitude of the grid electrode and the drain electrode of all the transistors playing a switching role to be increased through the first reset signal VI _ Cst and the second reset signal VI _ ANO, so that the switching characteristic of the transistors can be improved when the display is carried out at a high refresh rate, namely, the charging and discharging can be completed in a shorter time, meanwhile, the storage capacitor is filled more easily, and the voltage difference between the upper electrode plate and the lower electrode plate of the capacitor is larger. In addition, the voltage difference between the gate and the drain of the driving transistor T1 is also increased, so that the driving capability is enhanced, the time required for the compensation phase is shortened, and the conduction capability of the light emitting phase is maintained. That is, the signal for resetting the anode of the organic light emitting diode and the signal for resetting the storage capacitor in the embodiment of the application are supplied in two paths, so that the charge and discharge capacity of the transistor is improved, the charge and discharge delay is reduced, the anode of the organic light emitting diode is reset, and the switching speed from the bright state to the dark state or from the dark state to the bright state is increased.
It should be noted that, as the resolution and the refresh rate are continuously increased, the effective time of each frame is shorter and shorter, and the effective time of each row is also shorter and shorter. According to the operation rule of the pixel driving circuit of the existing OLED display panel, in each charging and discharging process, time special for compensating the threshold voltage of the driving transistor exists, the time is not compressed along with the compression of charging and discharging time, and only the requirement of relative stable time can be kept. Therefore, the threshold voltage compensation time of each row of pixels is shorter and shorter, so that the defects under low gray scale are more and more obvious, the display of the OLED display panel is crossed, and the production research and development efficiency is influenced; it also causes greater cost problems due to poor compensation. By adopting the technical scheme, the charge and discharge capacity is greatly improved.
In one embodiment, the pixel driving circuit further includes a writing transistor T2. The gate of the write transistor T2 is connected to the third Scan signal Scan2, the source of the write transistor T2 is connected to the Data signal Data, and the drain of the write transistor T2 is electrically connected to the source of the driving transistor T1. The write transistor T2 is used to write the Data signal Data to the pixel circuit according to the third Scan signal Scan 2.
In one embodiment, the pixel driving circuit further comprises a storage capacitor C1. The first terminal of the storage capacitor C1 is connected to the first power signal Vdd, and the second terminal of the storage capacitor C1 is electrically connected to the gate of the driving transistor T1. The storage capacitor C1 is used to store the potential of the gate of the driving transistor T1.
In one embodiment, the pixel driving circuit further includes a first light emission controlling transistor T5 and a second light emission controlling transistor T6. The gate of the first light-emitting control transistor T5 is connected to the light-emitting control signal EM, the source of the first light-emitting control transistor T5 is connected to the first power signal Vdd, and the drain of the first light-emitting control transistor T5 is electrically connected to the source of the driving transistor T1. The gate of the second light-emitting control transistor T6 is connected to the light-emitting control signal EM, the source of the second light-emitting control transistor T6 is electrically connected to the drain of the driving transistor T1, and the drain of the second light-emitting control transistor T6 is electrically connected to the anode of the light-emitting device D1. The first emission control transistor T5 and the second emission control transistor T6 are both configured to turn on and off the emission circuit according to the emission control signal EM.
It is understood that the first and second light emission controlling transistors T5 and T6 are in an off state or a saturated state at the same time to control the on and off of the light emitting loop at the same time.
In one embodiment, the first reset transistor T4 and the clamp transistor T3 are both indium gallium zinc oxide thin film transistors; the driving transistor T1, the second reset transistor T7, the write transistor T2, the first light emission control transistor T5, and the second light emission control transistor T6 are all low temperature polysilicon thin film transistors. The first reset transistor T4 and the clamp transistor T3 are both N-type indium gallium zinc oxide thin film transistors. The driving transistor T1, the second reset transistor T7, the writing transistor T2, the first light emission control transistor T5, and the second light emission control transistor T7 are all P-type low temperature polysilicon thin film transistors. It should be noted that the oxide-type first reset transistor T4 and the clamp transistor T3 have better low leakage characteristics, and can better prevent the gate leakage of the driving transistor T1.
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; 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.
The operation of the pixel driving circuit shown in fig. 1 will be described below. Referring to fig. 1 and 3, fig. 3 is a timing diagram of a pixel driving circuit according to an embodiment of the present disclosure. As shown in fig. 1 and 3, during the period in which the emission control signal EM is at the high potential, both the first emission control transistor T5 and the second emission control transistor T7 are in the off state, and the light emitting device D1 does not emit light.
In addition, during the period in which the emission control signal EM is at the high potential, the first Scan signal Scan1 is at the high potential first and then at the low potential; the second Scan signal Scan3 is at a low potential first and then at a high potential; the third Scan signal Scan2 is at a high voltage level first and then at a low voltage level.
Specifically, when the first Scan signal Scan1 is at a high potential, the second Scan signal Scan3 is at a low potential, and the third Scan signal Scan2 is at a high potential, the first reset transistor T4 is in an on state to reset the potential of the gate of the driving transistor T1. When the first Scan signal Scan1 is at a low potential, the second Scan signal Scan3 is at a high potential, and the third Scan signal Scan2 is at a low potential, the second reset transistor T7, the clamp transistor T3, and the write transistor T2 are all in an on state to reset the potential of the anode of the light emitting device D1, control the Data signal Data to be written to the source or the drain of the drive transistor T1, and clamp the potential of the gate of the drive transistor T1 to the potential of the source of the drive transistor T1 or the potential of the drain of the drive transistor T1 with the second Scan signal Scan 3.
In the low-potential period of the emission control signal EM, the first Scan signal Scan1 is at a low potential, the second Scan signal Scan3 is at a low potential, the third Scan signal Scan2 is at a high potential, and the light-emitting device D1 emits light.
Further, referring to fig. 4, fig. 4 is a comparison diagram of leakage currents of a pixel driving circuit according to an embodiment of the present disclosure. Specifically, fig. 4 shows the comparison result of the effect of the first reset transistor T4 and the clamp transistor T3 using single-gate or dual-gate transistors. Since the first reset transistor T4 and the clamp transistor T3 in the embodiment of the present application are double-gate transistors, the leakage current of the device can be effectively reduced by the double-gate structure. For the same size transistor, the leakage current of the double-gate transistor is significantly lower than that of the single-gate transistor. Based on the above conclusions, the technical solution in the present application is feasible.
The embodiment of the application provides a pixel driving circuit. In the pixel driving circuit, because the first reset transistor and/or the clamping transistor adopt the double-gate transistor, the increase of the leakage current of the transistor due to the photovoltaic effect can be avoided, and the leakage current of the transistor can be effectively reduced, so that the OLED display panel has a more stable display effect; in addition, the signal for resetting the anode of the organic light-emitting diode and the signal for resetting the storage capacitor are supplied in two paths, so that the charge and discharge capacity of the transistor is improved, the charge and discharge time delay is reduced, the anode reset of the organic light-emitting diode is accelerated, and the switching speed from a bright state to a dark state or from the dark state to the bright state is accelerated.
Referring to fig. 5, fig. 5 is a second circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure. Among them, the pixel driving circuit shown in fig. 5 is different from the pixel driving circuit shown in fig. 1 in that: the first reset transistor T4 and the clamp transistor T3 in the pixel driving circuit shown in fig. 1 are double-gate transistors; whereas only the first reset transistor T4 in the pixel driving circuit shown in fig. 5 is a double gate transistor.
Referring to fig. 6, fig. 6 is a third circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure. Among them, the pixel driving circuit shown in fig. 6 is different from the pixel driving circuit shown in fig. 1 in that: the first reset transistor T4 and the clamp transistor T3 in the pixel driving circuit shown in fig. 1 are double-gate transistors; whereas the pixel driving circuit shown in fig. 6 has only the clamp transistor T3 as a double gate transistor.
An embodiment of the present application further provides an OLED display panel, which includes the pixel driving circuit described in any of the above embodiments, which can be referred to above specifically, and is not described herein again.
The pixel driving circuit and the display panel provided by the present application are introduced in detail above, and a specific example is applied herein to illustrate the principles and embodiments of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A pixel driving circuit, comprising:
the light-emitting device is connected in series with a light-emitting loop formed by the first power signal and the second power signal;
the driving transistor is connected in series with the light-emitting loop and used for controlling the current flowing through the light-emitting loop;
the grid electrode of the first reset transistor is connected with a first scanning signal, the source electrode of the first reset transistor is connected with a first reset signal, and the drain electrode of the first reset transistor is electrically connected with the grid electrode of the driving transistor; and
the grid electrode of the clamping transistor is connected with a second scanning signal, the source electrode of the clamping transistor is electrically connected with the drain electrode of the driving transistor, and the drain electrode of the clamping transistor is electrically connected with the grid electrode of the driving transistor; wherein the content of the first and second substances,
the first reset transistor and/or the clamp transistor are double-gate transistors.
2. The pixel driving circuit according to claim 1, wherein the OLED pixel driving circuit further comprises a second reset transistor;
the grid electrode of the second reset transistor is connected with a third scanning signal, the source electrode of the second reset transistor is connected with a second reset signal, and the drain electrode of the second reset transistor is electrically connected with the anode of the light-emitting device.
3. The pixel driving circuit according to claim 2, wherein the pixel driving circuit further comprises a write transistor;
the gate of the writing transistor is connected to the third scanning signal, the source of the writing transistor is connected to the data signal, and the drain of the writing transistor is electrically connected to the source of the driving transistor.
4. The pixel driving circuit according to claim 3, further comprising a storage capacitor;
the first end of the storage capacitor is connected to the first power supply signal, and the second end of the storage capacitor is electrically connected with the grid electrode of the driving transistor.
5. The pixel driving circuit according to claim 4, further comprising a first emission control transistor and a second emission control transistor;
a grid electrode of the first light-emitting control transistor is connected with a light-emitting control signal, a source electrode of the first light-emitting control transistor is connected with the first power supply signal, and a drain electrode of the first light-emitting control transistor is electrically connected with a source electrode of the driving transistor;
the grid electrode of the second light-emitting control transistor is connected with the light-emitting control signal, the source electrode of the second light-emitting control transistor is electrically connected with the drain electrode of the driving transistor, and the drain electrode of the second light-emitting control transistor is electrically connected with the anode of the light-emitting device.
6. The pixel driving circuit according to claim 5, wherein the first reset transistor and the clamp transistor are indium gallium zinc oxide thin film transistors; the driving transistor, the second reset transistor, the writing transistor, the first light-emitting control transistor and the second light-emitting control transistor are all low-temperature polycrystalline silicon thin film transistors.
7. The pixel driving circuit according to claim 6, wherein the first reset transistor and the clamp transistor are both N-type indium gallium zinc oxide thin film transistors.
8. The pixel driving circuit according to claim 6, wherein the driving transistor, the second reset transistor, the writing transistor, the first light emission controlling transistor, and the second light emission controlling transistor are all P-type low temperature polysilicon thin film transistors.
9. The pixel driving circuit according to claim 1, wherein a potential of the first power supply signal is not smaller than a potential of the second power supply signal.
10. An OLED display panel comprising the pixel driving circuit according to any one of claims 1 to 9.
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| CN202011285442.7A CN112397030A (en) | 2020-11-17 | 2020-11-17 | Pixel driving circuit and OLED display panel |
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| CN202011285442.7A CN112397030A (en) | 2020-11-17 | 2020-11-17 | Pixel driving circuit and OLED display panel |
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| CN113257192A (en) * | 2021-05-21 | 2021-08-13 | 昆山国显光电有限公司 | Pixel circuit and display device |
| CN113436575A (en) * | 2021-05-17 | 2021-09-24 | 上海天马微电子有限公司 | Display panel and display device |
| CN113674668A (en) * | 2021-08-16 | 2021-11-19 | 武汉华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN113724651A (en) * | 2021-09-06 | 2021-11-30 | 武汉华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN114038409A (en) * | 2021-11-24 | 2022-02-11 | 武汉华星光电半导体显示技术有限公司 | Pixel circuit and display panel |
| WO2022217626A1 (en) * | 2021-04-12 | 2022-10-20 | 武汉华星光电半导体显示技术有限公司 | Pixel driving circuit and driving method therefor, and display panel |
| US11488533B2 (en) | 2021-08-03 | 2022-11-01 | Google Llc | Delaying anode voltage reset for quicker response times in OLED displays |
| WO2022226733A1 (en) * | 2021-04-26 | 2022-11-03 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method and display device |
| WO2022226727A1 (en) * | 2021-04-26 | 2022-11-03 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method and display device |
| US12002423B2 (en) | 2021-04-12 | 2024-06-04 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Pixel driving circuit, method for driving the same, and display panel |
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| US12002423B2 (en) | 2021-04-12 | 2024-06-04 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Pixel driving circuit, method for driving the same, and display panel |
| WO2022226727A1 (en) * | 2021-04-26 | 2022-11-03 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method and display device |
| WO2022226733A1 (en) * | 2021-04-26 | 2022-11-03 | 京东方科技集团股份有限公司 | Pixel circuit, pixel driving method and display device |
| GB2615719A (en) * | 2021-04-26 | 2023-08-16 | Boe Technology Group Co Ltd | Pixel circuit, pixel driving method and display device |
| CN113436575A (en) * | 2021-05-17 | 2021-09-24 | 上海天马微电子有限公司 | Display panel and display device |
| CN113257192B (en) * | 2021-05-21 | 2022-07-19 | 昆山国显光电有限公司 | Pixel circuit and display device |
| CN113257192A (en) * | 2021-05-21 | 2021-08-13 | 昆山国显光电有限公司 | Pixel circuit and display device |
| US11488533B2 (en) | 2021-08-03 | 2022-11-01 | Google Llc | Delaying anode voltage reset for quicker response times in OLED displays |
| CN113674668A (en) * | 2021-08-16 | 2021-11-19 | 武汉华星光电半导体显示技术有限公司 | Pixel driving circuit and display panel |
| CN113724651A (en) * | 2021-09-06 | 2021-11-30 | 武汉华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN113724651B (en) * | 2021-09-06 | 2023-12-05 | 武汉华星光电半导体显示技术有限公司 | Array substrate and display panel |
| CN114038409A (en) * | 2021-11-24 | 2022-02-11 | 武汉华星光电半导体显示技术有限公司 | Pixel circuit and display panel |
| WO2023092616A1 (en) * | 2021-11-24 | 2023-06-01 | 武汉华星光电半导体显示技术有限公司 | Pixel circuit and display panel |
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Application publication date: 20210223 |
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