CN111599309B - Pixel driving circuit, organic light-emitting display panel and display device - Google Patents

Pixel driving circuit, organic light-emitting display panel and display device Download PDF

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Publication number
CN111599309B
CN111599309B CN202010622180.2A CN202010622180A CN111599309B CN 111599309 B CN111599309 B CN 111599309B CN 202010622180 A CN202010622180 A CN 202010622180A CN 111599309 B CN111599309 B CN 111599309B
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transistor
electrically connected
module
control
light
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CN111599309A (en
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张蒙蒙
周星耀
曾冉冉
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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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]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of El Displays (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the application provides a pixel driving circuit, an organic light-emitting display panel and a display device, wherein in the pixel driving circuit, a first output end of a light-emitting control module is electrically connected with a light-emitting display module; the second input end of the light-emitting driving module is electrically connected with the power supply voltage signal wire, and the second output end of the light-emitting driving module is electrically connected with the first input end of the light-emitting control module; the third output end of the connection control module is electrically connected with the second control end; the fourth input end of the first initialization module is electrically connected with the first reference voltage signal line, the fourth output end of the first initialization module is electrically connected with the third input end, the first control end is electrically connected with the third control end, and the time for controlling the first input end and the first output end to be conducted by the first control end is different from the time for controlling the third input end and the third output end to be conducted by the third control end. The light-emitting driving current is stable and the number of signal lines is small.

Description

Pixel driving circuit, organic light-emitting display panel and display device
[ technical field ] A method for producing a semiconductor device
The present application relates to the field of display technologies, and in particular, to a pixel driving circuit, an organic light emitting display panel, and a display device.
[ background of the invention ]
Organic light emitting display is the mainstream technology of displays such as mobile phones, televisions and computers at present. Compared with the traditional liquid crystal display, the organic light emitting display has the advantages of low energy consumption, low cost, self luminescence, wide viewing angle, high corresponding speed and the like. Therefore, organic light emitting display is becoming mainstream display technology.
Since the organic light emitting display is current driven, a stable current is required to control light emission thereof. The magnitude and stability of the driving current of the organic light emitting display mainly depend on the magnitude and stability of the voltage transmitted to the organic light emitting device by the driving transistor in the pixel circuit of the organic light emitting display. In the prior art, due to the problem of leakage of other transistors connected to the gate of the driving transistor, the gate potential of the driving transistor is unstable, which results in unstable voltage transmitted to the organic light emitting device, and thus the organic light emitting display has the problem of screen shaking.
[ application contents ]
In view of the above, embodiments of the present disclosure provide a pixel driving circuit, an organic light emitting display panel and a display device to solve the above problems.
In a first aspect, an embodiment of the present application provides a pixel driving circuit, including: the device comprises a light emitting display module, a light emitting control module, a light emitting driving module, a connection control module and a first initialization module. The light-emitting display module comprises a light-emitting diode and is used for performing light-emitting display; the light-emitting control module comprises a first control end, a first input end and a first output end electrically connected with the light-emitting display module and is used for controlling the transmission of light-emitting driving current to the light-emitting display module; the light-emitting driving module comprises a second control end, a second input end electrically connected with the power supply voltage signal wire and a second output end electrically connected with the first input end, and is used for generating light-emitting driving current; the connection control module comprises a third control end, a third input end, a third output end electrically connected with the second control end and used for controlling the connection and disconnection between the second control end and the first initialization module; the first initialization module comprises a fourth input end electrically connected with the first reference voltage signal line and a fourth output end electrically connected with the third input end, and is used for initializing the second control end; the first control end is electrically connected with the third control end, and the time for controlling the first input end and the first output end to be conducted by the first control end is different from the time for controlling the third input end and the third output end to be conducted by the third control end.
In a second aspect, an embodiment of the present application provides an organic light emitting display panel, which includes the pixel driving circuit provided in the first aspect, and the pixel driving circuit and the pixel units are arranged in a one-to-one correspondence manner.
In a third aspect, embodiments of the present application provide an organic light emitting display device including the organic light emitting display panel as provided in the second aspect.
The connection control module is arranged between the output end of the first initialization module and the control end of the light-emitting drive module, so that the connection between the input end and the output end of the first initialization module, the connection between the input end and the output end of the connection control module and the connection between the input end and the output end of the first initialization module can be disconnected in the light-emitting stage of the pixel drive circuit, the voltage of the control end of the light-emitting drive module is prevented from being influenced by leakage current when the first initialization module is not completely turned off in the light-emitting stage, and the light-emitting stability of a light-emitting diode in the light-emitting drive circuit is ensured. Meanwhile, the first control end and the third control end are electrically connected, so that the number of signal lines can be reduced under the condition that the work of the circuit is not influenced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described 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 schematic diagram of a pixel driving circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another pixel driving circuit according to an embodiment of the present disclosure;
fig. 3 is an equivalent circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure;
FIG. 4 is a timing diagram corresponding to the circuit diagram shown in FIG. 3;
fig. 5 is an equivalent circuit diagram of another pixel driving circuit according to an embodiment of the present application;
FIG. 6 is a timing diagram corresponding to the circuit shown in FIG. 5;
FIG. 7 is another timing diagram for the circuit of FIG. 5;
fig. 8 is a schematic view of an organic light emitting display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic view of an organic light emitting display device according to an embodiment of the present disclosure.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should 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 terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the description herein, it is to be understood that the terms "substantially", "approximately", "about", "substantially", and the like, as used in the claims and the examples herein, are intended to be generally accepted as not being precise, within the scope of reasonable process operation or tolerance.
It should be understood that although the terms first, second, third, etc. may be used to describe transistors in the embodiments of the present application, the transistors should not be limited to these terms. These terms are only used to distinguish transistors from one another. For example, the first transistor may also be referred to as a second transistor, and similarly, the second transistor may also be referred to as a first transistor without departing from the scope of embodiments of the present application.
The applicant provides a solution to the problems of the prior art through intensive research.
Fig. 1 is a schematic diagram of a pixel driving circuit according to an embodiment of the present disclosure, and fig. 2 is a schematic diagram of another pixel driving circuit according to an embodiment of the present disclosure, as shown in fig. 1 and fig. 2, the pixel driving circuit according to an embodiment of the present disclosure includes a light emitting display module 00, a light emitting control module 01, a light emitting driving module 02, a connection control module 03, and a first initialization module 04.
The light emitting display module 00 includes a light emitting diode for performing light emitting display. The light emitting diode included in the light emitting display module 00 may be a Micro-LED, or an organic light emitting diode OLED.
And a light emission control module 01 for controlling whether the light emission driving current is transmitted to the light emission display module 00 to control light emission thereof. As shown IN fig. 1, the lighting control module 01 includes a first control terminal CR1, a first input terminal IN1, and a first output terminal OUT 1; the first control terminal CR1 is electrically connected to the first scan line EM and is used for controlling the on and off states between the first input terminal IN1 and the first output terminal OUT1 of the continuous light emission control module 01, the first input terminal IN1 can receive a light emission driving current, and the first output terminal OUT1 is electrically connected to the light emission display module 00. When the first scan line EM transmits the on signal to the first control terminal CR1, the first control terminal CR1 controls the first input terminal IN1 and the first output terminal OUT1 to be turned on, so that the light-emitting driving current received by the first input terminal IN1 can be transmitted to the light-emitting display module 00 through the light-emitting control module 01 to emit light.
The light emitting driving module 02 includes a second control terminal CR2, a second input terminal IN2, and a second output terminal OUT 2; the second input terminal IN2 is electrically connected to the power voltage signal line PVDD, the second output terminal OUT2 is electrically connected to the first input terminal IN1, and the light-emitting driving module 02 is configured to generate a light-emitting driving current. The light-emitting driving current generated by the light-emitting driving module 02 is transmitted to the first input terminal IN1 through the second output terminal OUT 2.
The connection control module 03 comprises a third control terminal CR3, a third input terminal IN3 and a third output terminal OUT 3; the third output terminal OUT3 is electrically connected to the second control terminal CR2 of the light-emitting driving module 02. The third control terminal CR3 is used for controlling the on/off state between the third input terminal IN3 and the third output terminal OUT3 of the connection control module 03. When the third control terminal CR3 controls the conduction between the third input terminal IN3 and the third output terminal OUT3, the first control terminal CR2 of the light-emitting driving module 02 may receive a signal through the connection control module 02; when the connection control module 03 turns off between the third input terminal IN3 and the third output terminal OUT3, the connection control module 03 may control the interruption of signal transmission between the second control terminal CR2 of the light-emitting driving module 02 and other signal lines and/or other transistors.
The first initialization module 04 comprises a fourth control terminal CR4, a fourth input terminal IN4, and a fourth output terminal OUT 4; the fourth control terminal CR4 is connected to the second scan line S4 and is used for controlling the on/off state between the fourth input terminal IN4 and the fourth output terminal OUT4 of the first initialization block 04, the fourth input terminal IN4 is connected to the first reference voltage signal line Ref1, and the fourth output terminal OUT4 is connected to the third input terminal IN 3. When the second scan line S4 is turned on to the fourth control terminal CR4, the fourth input terminal IN4 and the fourth output terminal OUT4 of the first initialization module 04 are turned on, and the first reference voltage transmitted by the first reference voltage signal line Ref1 can be transmitted to the turned-on connection control module 03 through the turned-on first initialization module 04, and further transmitted to the second control terminal CR2 of the light-emitting driving module 02, so that the initialization of the second control terminal CR2 of the light-emitting driving module 02 is completed.
The connection control module 03 is arranged between the fourth output end OUT4 of the first initialization module 04 and the second control end CR2 of the light-emitting driving module 02, so that IN the light-emitting stage of the pixel driving circuit, the fourth input end IN4 and the fourth output end OUT4 of the first initialization module 04 are disconnected, and the third input end IN3 and the third output end OUT3 of the connection control module 03 are disconnected, thereby preventing the first initialization module 04 from generating leakage current when the light-emitting stage is not completely turned off, so as to affect the voltage of the second control end CR2 of the light-emitting driving module 02, and ensuring the light-emitting stability of the light-emitting diode, specifically the organic light-emitting diode OLED, IN the light-emitting driving circuit.
In the embodiment of the present application, the first control terminal CR1 is electrically connected to the third control terminal CR3, and referring to fig. 1, the first control terminal CR1 is electrically connected to the third control terminal CR3 in such a manner that both are connected to the same first scan line EM. Since the first control terminal CR1 should control the connection between the first input terminal IN1 and the first output terminal OUT1 of the lighting control module 01 to be turned on during the lighting phase, and the third control terminal CR3 should control the connection between the third input terminal IN3 and the third output terminal OUT3 of the connection control module 03 to be turned off during the lighting phase, the first enable signal transmitted by the first scan line EM makes the first input terminal IN1 and the first output terminal OUT1 turned on during the lighting phase, and makes the third input terminal IN3 and the third output terminal OUT3 turned off during the lighting phase. IN the initialization phase, the first control terminal CR1 should control the connection between the first input terminal IN1 and the first output terminal OUT1 of the lighting control module 01 to be turned off, and the third control terminal CR3 should control the connection between the third input terminal IN3 and the third output terminal OUT3 of the connection control module 03 to be turned on, so that the second enable signal transmitted by the first scan line EM turns off the connection between the first input terminal IN1 and the first output terminal OUT1, and turns on the connection between the third input terminal IN3 and the third output terminal OUT3 IN the lighting phase.
Since the connection control terminal 03 is mainly used for writing the potential of the second control terminal CR2 of the light-emitting driving module 02, and the light-emitting control module 01 is mainly used for receiving the current output by the second output terminal OUT2 of the light-emitting driving module 02, the connection control terminal 03 and the light-emitting control module 01 do not work simultaneously. Therefore, although the first control terminal CR1 and the third control terminal CR3 are connected to the same first scan line EM, the first control terminal CR1 controls the first input terminal IN1 and the first output terminal OUT1 to be turned on for a different time than the third control terminal CR3 controls the third input terminal IN3 and the third output terminal OUT3 to be turned on. By electrically connecting the first control terminal CR1 and the third control terminal CR3, the number of signal lines can be reduced without affecting the operation of the circuit.
The pixel driving circuit provided by the embodiment of the application further includes a threshold voltage capture module 05 and a first capacitor C1.
The threshold voltage capture module 05 includes a fifth input terminal IN5 and a fifth output terminal OUT5, the fifth input terminal IN5 is connected to the second output terminal OUT2 of the lighting driving module 02, and the fifth output terminal OUT5 is connected to the third input terminal IN3 of the connection control module 03. IN addition, the threshold voltage capture module 05 further includes a fifth control terminal CR5, wherein the fifth control terminal CR5 is connected to the third scan line S5 and is used for controlling the on/off between the fifth input terminal IN5 and the fifth output terminal OUT5 of the threshold voltage capture module 05.
The threshold voltage capture module 05 is configured to store the fixed voltage connected to the second input terminal IN2 of the light-emitting driving module 02 to the second control terminal CR2 of the light-emitting driving module 02 before the light-emitting driving module 02 generates the light-emitting driving current; the influence of the threshold voltage of the light emission driving module 02 on the light emission driving voltage is eliminated when the light emission driving module 02 generates the light emission driving current, thereby implementing the threshold compensation.
The first capacitor C1 includes a first plate and a second plate, the first plate is electrically connected to the second control terminal CR2 of the light driving module 02, wherein the first capacitor C1 is used for storing the voltage of the second control terminal CR2 of the light driving module 02 connected thereto, for example, the threshold voltage capture module 05 is used for storing the power voltage transmitted by the power voltage signal line PVDD to the first capacitor C1.
It should be noted that, since the threshold voltage capture module 05 and the first initialization module 04 need to transmit the specific voltage to the second control terminal CR2 of the light-emitting driving module 02 at different stages, the fifth input terminal IN5 and the fifth output terminal OUT5 are turned on for different time periods than the fourth input terminal IN4 and the fourth output terminal OUT4 are turned on for different time periods.
As shown IN fig. 1 and fig. 2, the pixel driving circuit provided IN the embodiment of the present invention further includes a Data voltage writing module 06, wherein the Data voltage writing module 06 includes a sixth input terminal IN6 and a sixth output terminal OUT6, the sixth input terminal IN6 is electrically connected to the first Data signal line Data1, and the sixth output terminal OUT6 is electrically connected to the second plate of the first capacitor C1. IN addition, the data voltage writing block 06 further includes a sixth control terminal CR6, the sixth control terminal CR6 is connected to the fourth scan line S6 and is used for controlling the connection and disconnection between the sixth input terminal IN6 and the sixth output terminal OUT6 of the data voltage writing block 06. The Data voltage writing module 06 is used for writing the first Data voltage transmitted by the first Data signal line Data1 into the first capacitor C1.
As shown IN fig. 2, IN an embodiment of the present application, as shown IN fig. 3, the Data voltage writing module 06 further includes a seventh input terminal IN7 and a seventh control terminal CR7, the seventh input terminal IN7 is electrically connected to the second Data signal line Data 2; the sixth control terminal CR6 is connected to the fifth scan line S7 and is used for controlling the turn-on and turn-off between the seventh input terminal IN7 and the sixth output terminal OUT6 of the data voltage writing module 06. Therefore, the Data voltage writing module 06 is also used for writing the second Data voltage transmitted by the second Data signal line Data2 into the first capacitor C1.
It should be noted that the first data voltage and the second data voltage are written into the first capacitor C1 at different times by the data voltage writing module 06, and therefore, the turn-on time of the sixth output terminal OUT6 and the sixth input terminal IN6 is different from the turn-on time of the sixth output terminal OUT6 and the seventh input terminal IN 7.
With reference to fig. 1 and fig. 2, the pixel driving circuit according to the embodiment of the present disclosure further includes a second initialization module 08, where the second initialization module 08 includes an eighth input terminal IN8 and an eighth output terminal OUT8, the eighth input terminal IN8 is connected to the second reference voltage signal line Ref2, and the eighth output terminal OUT8 is electrically connected to the light emitting display module 00, so as to initialize the light emitting display module 00. For example, the eighth output terminal OUT8 is connected to the anode of the organic light emitting diode OLED, so that the initialization of the anode of the organic light emitting diode OLED can be realized. IN addition, the second initialization module 08 further includes an eighth control terminal CR8, and the eighth control terminal CR8 is connected to the sixth scan line S8 and is used for controlling the on/off between the eighth input terminal IN8 and the eighth output terminal OUT8 of the second initialization module 08. When the eighth input terminal IN8 and the eighth output terminal OUT8 of the second initialization module 08 are turned on, the reference voltage transmitted by the second reference voltage signal line Ref2 may be transmitted to the anode of the organic light emitting diode OLED through the turned-on second initialization module 08, so as to complete the initialization of the anode of the organic light emitting diode OLED.
In an embodiment of the present application, the first initialization module 05 and the second initialization module 08 can simultaneously complete the initialization of the second control terminal CR2 of the light emitting driving module 02 and the initialization of the light emitting module 01, respectively, so that the sixth scan line S8 and the second scan line S2 can be multiplexed. In addition, the first reference voltage signal line Ref1 and the second reference voltage signal line Ref2 can also be multiplexed.
Fig. 3 is an equivalent circuit diagram of a pixel driving circuit according to an embodiment of the present disclosure.
As shown IN fig. 3, the lighting control module 01 includes a first transistor T1, a gate of the first transistor T1 is electrically connected to the first control terminal CR1, a source of the first transistor T1 is electrically connected to the first input terminal IN1, and a drain of the first transistor T1 is electrically connected to the first output terminal OUT 1. In the light emitting period, the first transistor T1 is turned on, and the first transistor T1 transmits the light emitting driving current generated by the light emitting driving module 02 to the light emitting display module 00.
The light driving module 02 includes a second transistor T2, a gate of the second transistor T2 is electrically connected to the second control terminal CR2, a source of the second transistor T2 is electrically connected to the second input terminal IN2, and a drain of the second transistor T2 is electrically connected to the second output terminal OUT2, so that the second transistor T2 can generate a light driving current.
The connection control module 03 includes a third transistor T3, a gate of the third transistor T3 is electrically connected to the third control terminal CR3, a source of the third transistor T3 is electrically connected to the third input terminal IN3, and a drain of the third transistor T3 is electrically connected to the third output terminal OUT 3. If the third transistor T3 is turned on, the transistor electrically connected to the source of the third transistor T3 may achieve on-state with the gate of the second transistor T2, and if the third transistor T3 is turned off, the transistor electrically connected to the source of the third transistor T3 may achieve off-state with the gate of the second transistor T2, so that voltage stability of the gate of the second transistor T2 may be maintained. For example, the third transistor T3 is turned on during the initialization phase and the threshold voltage capture phase to respectively initialize the second control terminal CR2 of the light emitting driving module 02 and write the threshold voltage, and the third transistor T3 is turned off during the light emitting phase to disconnect the second control terminal CR2 of the light emitting driving module 02 from other transistors, so as to ensure the voltage at the gate of the second transistor T2 to be stable, thereby realizing the constancy of the light emitting driving current.
Since the first control terminal CR1 of the light emission control module 01 and the third control terminal CR3 of the connection control module 03 are both electrically connected to the first scan line EM, and the first transistor T1 and the third transistor T3 are turned on in a time-sharing manner, the channel types of the third transistor T3 and the first transistor T1 are different. For example, as shown in fig. 3, when the first transistor T1 is a P-type transistor and the third transistor T3 is an N-type transistor, the light-emission control module 01 and the connection control module 03 are controlled by a signal transmitted through the first scan line EM, but they may be turned on at different times. In addition, the channel type of the second transistor T2 may also be different from that of the third transistor T3, and as shown in fig. 3, the second transistor T2 may be a P-type transistor.
And in order to better avoid leakage current, the third transistor T3 is an N-type transistor and its active layer is a metal oxide active layer with better stability.
As shown IN fig. 3, the first initialization block 04 includes a fourth transistor T4, a gate of the fourth transistor T4 is connected to the fourth control terminal CR4, a source of the fourth transistor T4 is connected to the fourth input terminal IN4, and a drain of the fourth transistor T4 is connected to the fourth output terminal OUT 4. In the initialization stage, the fourth transistor T4 is turned on, the first reference voltage signal line Ref1 transmits the reference voltage, and the fourth transistor T4 transmits the reference voltage to the second control terminal CR2 of the light emitting driving module 02 through the turned-on third transistor T3, that is, to the gate of the second transistor T2, thereby completing the initialization of the second transistor T2. In one embodiment of the present application, as shown in fig. 3, the fourth transistor T4 may be a P-type transistor.
As shown IN fig. 3, the threshold voltage capture module 05 includes a fifth transistor T5, a source of the fifth transistor T5 is electrically connected to the fifth input terminal IN5, and a drain of the fifth transistor T5 is electrically connected to the fifth output terminal OUT 5. In the threshold voltage capture stage, the fifth transistor T5 is turned on, and the power voltage transmitted from the power voltage signal line PVDD is transmitted to the second control terminal CR2, i.e., to the gate of the second transistor T2, through the turned-on third transistor T3. In one embodiment of the present application, as shown in fig. 3, the fifth transistor T5 is a P-type transistor.
As shown IN fig. 3, the data voltage writing module 06 includes a sixth transistor T6, a gate of the sixth transistor T6 is connected to the sixth control terminal, a source of the sixth transistor T6 is electrically connected to the sixth input terminal IN6, and a drain of the sixth transistor T6 is electrically connected to the sixth output terminal. IN the data voltage writing phase, the sixth transistor T6 is turned on to transmit the first data voltage received at the sixth input terminal IN6 to the second plate of the first capacitor. In one embodiment of the present application, the sixth transistor T6 is a P-type transistor.
As shown IN fig. 3, the second initialization block 08 includes an eighth transistor T8, a gate of the eighth transistor T8 is connected to the eighth control terminal CR8, a source thereof is connected to the eighth input terminal IN8, and a drain thereof is connected to the eighth output terminal OUT 8. In the initialization stage, the eighth transistor T8 is turned on, and the second reference voltage transmitted from the second reference voltage signal line Ref2 is transmitted to the light emitting module 00, so that the light emitting module 00 is initialized. In one embodiment of the present application, the eighth transistor is a P-type transistor.
Fig. 4 is a timing diagram corresponding to the circuit diagram shown in fig. 3. The operation principle of the pixel driving circuit according to the embodiment shown in fig. 3 will be described with reference to fig. 3 and 4. The pixel driving circuit provided by the embodiment of the application can be used for organic light emitting display, and during the operation period of the organic light emitting display, the operation period of the pixel driving circuit comprises a plurality of cycles, and each cycle comprises an initialization phase t1, a threshold voltage capture phase t2, a data voltage writing phase t3 and a light emitting phase t4 which are sequentially performed. In the following description, the first transistor T1, the second transistor T2, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, and the eighth transistor T8 are all P-type transistors, and the third transistor T3 is an N-type transistor. Of course, any one of the first transistor T1, the second transistor T2, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, and the eighth transistor T8 may be an N-type transistor.
In the initialization stage T1, the first scan line EM receives a first enable signal, i.e., a high level signal, the third transistor T3 is turned on, and the first transistor T1 is turned off; the second scan line S4 and the sixth scan line S8 receive turn-on signals, i.e., low level signals, and the fourth transistor T4 and the eighth transistor T8 are turned on; the third scanning line S5 and the fourth scanning line S6 receive an off signal, i.e., a high level signal or no signal, and the fifth transistor T5 and the sixth transistor T6 are turned off. Meanwhile, the first reference voltage signal line Ref1 transmits the first reference voltage Vref1, the second reference voltage signal line Ref2 transmits the second reference voltage Vref2, and the first reference voltage Vref1 is a low-level signal, so that the first reference voltage Vref1 reaches the gate of the second transistor T2 through the turned-on third transistor T3 and the turned-on fourth transistor T4, and the second transistor T2 is controlled to be turned on, thereby completing the initialization of the light emitting driving module 02. Since the gate of the second transistor T2 is connected to the first plate of the first capacitor C1, the gate of the second transistor T2 is at the same voltage level as the first reference voltage Vref1 during the initialization period.
In the threshold voltage capture stage T2, the first scan line EM receives a first enable signal, i.e., a high level signal, the third transistor T3 is turned on, and the first transistor T1 is turned off; the third scan line S5 receives an on signal, i.e., a low level signal, and the fifth transistor T5 is turned on; the second scan line S4 receives an off signal, i.e., a high level signal or no signal, from the fourth scan line S6 and the sixth scan line S8, and the fourth transistor T4, the sixth transistor T6 and the eighth transistor T8 are turned off. Meanwhile, the power supply voltage signal line PVDD transmits the power supply voltage VDD. At the beginning point of the threshold voltage grabbing stage T2, the gate potential of the second transistor T1 is the first reference voltage Vref1, the source potential of the second transistor T2 is the power voltage VDD, the potential difference between the source and the gate of the second transistor T2 is (VDD-Vref1), and the potential difference between the source and the gate is greater than 0, so that the second transistor T2 is turned on, and the power voltage VDD is transmitted to the gate of the second transistor T2 through the turned-on source and drain of the second transistor T2 and the turned-on third transistor T3 and fifth transistor T5, so that the gate potential of the second transistor T2 is gradually increased. When the gate potential of the second transistor T2 is equal to (VDD- | Vth |), the second transistor T2 starts to turn off, and the threshold voltage capture phase T2 ends, at which time the gate potential of the second transistor T2 is maintained at (VDD- | Vth |) due to the presence of the first capacitor C1, where Vth is the threshold voltage of the second transistor T2.
In the data signal writing phase T3, the fourth scan line S6 receives a turn-on signal, i.e., a low level signal, and the sixth transistor T6 is turned on; the first scan line EM does not receive a signal, and the first transistor T1 and the third transistor T3 are turned off; the second scan line S4, the third scan line S5, and the sixth scan line S6 receive an off signal, i.e., a high level signal, and the fourth transistor T4, the fifth transistor T5, and the eighth transistor T8 are turned off. Meanwhile, the first Data signal line Data1 transmits the first Data voltage Vdata1, the gate potential of the second transistor T2 becomes (VDD- | Vth | + Vdata1) due to the presence of the first capacitor C1.
In the light emitting period, the first scan line EM receives a second enable signal, i.e., a low level signal, the first transistor T1 is turned on, and the third transistor T3 is turned off; the fourth scan line S6 receives an on signal, i.e., a low level signal, and the sixth transistor T6 is turned on; the second scan line S4, the third scan line S5, the fourth scan line S6, and the sixth scan line S8 receive an off signal, i.e., a high level signal, and the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, and the eighth transistor T8 are turned off. Meanwhile, the power voltage signal line PVDD transmits the power voltage VDD, that is, the source potential of the second transistor T2 is the power voltage VDD, and at this time, the voltage difference between the source and the gate of the second transistor T2 can be obtained by the following relation, specifically: vSG＝VDD-|Vth|-VGVDD- | Vth | - (VDD- | Vth | + Vdata1) ═ Vdata. That is, in the light emitting period T4, the voltage difference between the source and the gate of the second transistor T2 is independent of the power voltage VDD and the threshold voltage | Vth | of the second transistor T2, so that the influence of the voltage drop of the power voltage VDD on the power voltage signal line PVDD on the light emitting driving current and the influence of the threshold voltage | Vth | of the second transistor T2 on the light emitting driving current are eliminated, and thus the pixel driving circuit has a stable light emitting driving current and a display effect is ensured.
Also in the pixel driving circuit shown in fig. 3, the initialization of the gate of the second transistor T2 and the initialization of the light emitting module 01 may be simultaneously performed, and thus the first reference voltage signal line Ref1 and the second reference voltage signal line Ref2 may be multiplexed.
Fig. 5 is an equivalent circuit diagram of another pixel driving circuit according to an embodiment of the present disclosure, and fig. 6 is a timing diagram corresponding to the circuit shown in fig. 5.
IN an embodiment of the present application, the pixel driving circuit provided IN the embodiment of the present application is different from the pixel driving circuit shown IN fig. 3 only IN that the Data voltage writing module 06 further includes a seventh transistor T7, a gate of the seventh transistor T7 is connected to the seventh control terminal CR7, a source of the seventh transistor T7 is electrically connected to the seventh input terminal IN7, the seventh input terminal IN7 is electrically connected to the second Data signal line Data2, and a drain of the second seventh transistor T7 is electrically connected to the sixth output terminal OUT 6.
Compared with the timing sequence shown in fig. 4, the timing sequence of the pixel driving circuit shown in fig. 6 is changed as follows:
in the threshold voltage capture phase T2, the fourth scan line S6 receives a turn-on signal, i.e., a low level signal, and the sixth transistor T6 is turned on; the fifth scan line S7 simultaneously receives a turn-off signal, i.e., a high level signal, and the seventh transistor T7 is turned off. Meanwhile, the first Data signal line Data1 transmits a first Data voltage Vdata1, that is, in the threshold voltage capture phase t2, the power voltage VDD and the first Data voltage Vdata1 are written into the first plate and the second plate of the first capacitor C1 respectively at the same time.
In the data voltage writing phase T3, the fourth scan line S6 simultaneously receives a turn-off signal, i.e., a high level signal, and the sixth transistor T6 is turned off; the fifth scan line S7 receives an on signal, i.e., a low level signal, and the seventh transistor T7 is turned on; the other transistors are also turned off. Meanwhile, the second Data signal line Data2 transmits a second Data voltage Vdata2, and the second Data voltage Vdata2 is written into the first plate of the first capacitor C1 through the seventh transistor T7. Due to the presence of the first capacitor C1, the gate potential of the second transistor T2 becomes (Vdata2-Vdata1+ VDD- | Vth |).
Then, during the lighting period T4, the voltage difference between the source and the gate of the second transistor T2 is: vSG＝VDD-|Vth|-VG＝VDD-|Vth|-(Vdata2-Vdata1+ VDD- | Vth |) -Vdata 1-Vdata 2. That is, in the light emitting period T4, the voltage difference between the source and the gate of the second transistor T2 is independent of the power voltage VDD and the threshold voltage | Vth | of the second transistor T2, so that the influence of the voltage drop of the power voltage VDD on the power voltage signal line PVDD on the light emitting driving current and the influence of the threshold voltage | Vth | of the second transistor T2 on the light emitting driving current are eliminated, and thus the pixel driving circuit has a stable light emitting driving current and a display effect is ensured.
Fig. 7 is another timing diagram corresponding to the circuit shown in fig. 5, and the timing shown in fig. 7 is different from the timing shown in fig. 6 in that the light-emitting phase and the data voltage writing phase are performed in one phase, and the combined phase is still referred to as the light-emitting phase t3, so that the time for the fifth scan line S7 to receive the turn-on signal is the same as the time for the first scan line EM to receive the second enable signal. In the embodiment, the working period of the pixel driving circuit is shortened, or the light emitting time controlled by the driving circuit is prolonged; in addition, since the time when the fifth scan line S7 receives the turn-on signal is the same as the time when the first scan line EM receives the second enable signal, the fifth scan line S7 may be multiplexed with the first scan line, i.e., the gate of the seventh transistor is electrically connected to the first control terminal CR1 and the third control terminal CR 3.
In addition, when the seventh transistor T7 exists in the pixel driving circuit, in the light emitting stage, since the voltage difference between the source and the gate of the second transistor T2 is (Vdata1-Vdata2) and the second transistor T2 is a P-type transistor, the first data voltage Vdata1 should be greater than the second data voltage Vdata2, and the Vdata2 may be equal to the first reference voltage Vref1 and/or the second reference voltage Vref 2. And further, the first reference voltage signal line Ref1, the second reference voltage signal line Ref2, and the second Data signal line Data2 may be multiplexed.
In addition, when the second Data signal line Data2 of the previous-stage pixel driving circuit can be multiplexed with the second reference voltage signal line Ref2 and/or the first reference voltage signal line Ref1 of the current-stage pixel driving circuit, that is, when the second Data voltage of the previous stage is written, the initialization of the current-stage light emitting module 00 and the light emitting driving module 02 is completed simultaneously, so that the number of signal lines is further reduced, and the working period is shortened.
Fig. 8 is a schematic view of an organic light emitting display panel according to an embodiment of the present disclosure. As shown in fig. 8, the organic light emitting display panel provided by the embodiment of the present application includes a plurality of pixel units P, and each pixel unit P corresponds to one pixel driving circuit. And the light emitting display module 01 and each transistor in the pixel driving circuit are located in different film layers, wherein the first transistor T1 in the pixel driving circuit is electrically connected with the light emitting display module 01 through a via hole.
In the organic light emitting display panel provided by the embodiment of the application, the pixel driving circuit has excellent functions and the number of signal lines is small, so that the effective light emitting area of the organic light emitting display panel is large.
Fig. 9 is a schematic view of an organic light emitting display device according to an embodiment of the present disclosure. As shown in fig. 9, the organic light emitting display device provided in the embodiment of the present application may be a mobile phone, and in addition, the organic light emitting display device provided in the embodiment of the present application may also be a display device such as a computer or a television. The organic light emitting display device provided by the embodiment of the application comprises the organic light emitting display panel provided by the embodiment. The organic light emitting display device includes a display area AA in which a pixel driving circuit is disposed, and a non-display area BB disposed at a periphery of the display area AA.
In the organic light emitting display device provided by the embodiment of the application, the pixel driving circuit has excellent functions and the number of signal lines is small, so that the effective light emitting area of the organic light emitting display device is large.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (14)

1. A pixel driving circuit, comprising:
the light-emitting display module comprises a light-emitting diode and is used for performing light-emitting display;
the light emitting control module comprises a first control end, a first input end and a first output end; the first output end is electrically connected with the light-emitting display module and is used for controlling the transmission of light-emitting driving current to the light-emitting display module;
the light-emitting driving module comprises a second control end, a second input end and a second output end; the second input end is electrically connected with a power supply voltage signal line, and the second output end is electrically connected with the first input end; the light-emitting driving module is used for generating light-emitting driving current;
the connection control module comprises a third control end, a third input end and a third output end; the third output end is electrically connected with the second control end;
the first capacitor comprises a first polar plate and a second polar plate, and the first polar plate is connected with the second control end;
the data voltage writing module comprises a sixth input end and a sixth output end; the sixth input end is electrically connected with the first data signal line, and the sixth output end is electrically connected with the second diode board; the data voltage writing module is used for writing a first data voltage transmitted by the first data signal line into the first capacitor; the data voltage writing module comprises a sixth transistor, the source electrode of the sixth transistor is electrically connected with the sixth input end, and the drain electrode of the sixth transistor is electrically connected with the sixth output end; the data voltage writing module further comprises a seventh input end, and the seventh input end is electrically connected with the second data signal line; the data voltage writing module is further configured to write a second data voltage transmitted by the second data signal line into the first capacitor; the conduction time of the sixth output terminal and the sixth input terminal is different from the conduction time of the sixth output terminal and the seventh input terminal;
the first initialization module comprises a fourth input end and a fourth output end; the fourth input end is electrically connected with the first reference voltage signal line, and the fourth output end is electrically connected with the third input end; the first initialization module is used for initializing the second control end; the connection control module is used for controlling the connection and disconnection between the second control end and the first initialization module;
the first control end is electrically connected with the third control end, and the time for controlling the first input end and the first output end to be conducted by the first control end is different from the time for controlling the third input end and the third output end to be conducted by the third control end.
2. The pixel driving circuit according to claim 1, wherein the light emission control module comprises a first transistor, a gate of the first transistor is electrically connected to the first control terminal, a source of the first transistor is electrically connected to the first input terminal, and a drain of the first transistor is electrically connected to the first output terminal;
the light emitting driving module comprises a second transistor, a grid electrode of the second transistor is electrically connected with the second control end, a source electrode of the second transistor is electrically connected with the second input end, and a drain electrode of the second transistor is electrically connected with the second output end;
the connection control module comprises a third transistor, wherein the grid electrode of the third transistor is electrically connected with the third control end, the source electrode of the third transistor is electrically connected with the third input end, and the drain electrode of the third transistor is electrically connected with the third output end;
wherein the third transistor is of a different channel type than the first and second transistors.
3. The pixel driving circuit according to claim 2, wherein the first transistor and the second transistor are P-type transistors, and the third transistor is an N-type transistor.
4. The pixel driving circuit according to claim 3, wherein the third transistor comprises a metal oxide active layer.
5. The pixel driving circuit according to claim 1, wherein the first initialization module comprises a fourth transistor, a source of the fourth transistor is connected to the fourth input terminal, a drain of the fourth transistor is connected to the fourth output terminal, and the fourth transistor is a P-type transistor.
6. The pixel driving circuit according to claim 1, further comprising: the threshold voltage grabbing module comprises a fifth input end and a fifth output end; the fifth input end is electrically connected with the second output end, and the fifth output end is electrically connected with the third input end; the time for conducting the fifth input end and the fifth output end is different from the time for conducting the fourth input end and the fourth output end;
the threshold voltage grabbing module is used for storing the power supply voltage transmitted by the power supply voltage signal wire to the first capacitor.
7. The pixel driving circuit according to claim 6, wherein the threshold voltage capture module comprises a fifth transistor, a source of the fifth transistor is electrically connected to the fifth input terminal, a drain of the fifth transistor is electrically connected to the fifth output terminal, and the fifth transistor is a P-type transistor.
8. The pixel driving circuit according to claim 1, wherein the data voltage writing module comprises a seventh transistor, a source of the seventh transistor is electrically connected to the seventh input terminal, and a drain of the seventh transistor is electrically connected to the sixth output terminal.
9. The pixel driving circuit according to claim 8, wherein a gate of the seventh transistor is electrically connected to the first control terminal and the third control terminal.
10. The pixel driving circuit according to claim 1, wherein the first reference voltage signal line is multiplexed with the second data signal line.
11. The pixel driving circuit according to claim 1, further comprising a second initialization module, wherein the second initialization module comprises an eighth input terminal and an eighth output terminal, the eighth input terminal is electrically connected to a second reference voltage signal line, the eighth output terminal is electrically connected to the light emitting display module, and the second initialization module is configured to initialize the light emitting display module.
12. The pixel driving circuit according to claim 11, wherein the second initialization module comprises an eighth transistor, a source of the eighth transistor is connected to the eighth input terminal, a drain of the eighth transistor is connected to the eighth output terminal, and the eighth transistor is a P-type transistor.
13. An organic light emitting display panel comprising the pixel driving circuit according to any one of claims 1 to 12, wherein the pixel driving circuit is provided in one-to-one correspondence with a pixel unit.
14. An organic light-emitting display device comprising the organic light-emitting display panel according to claim 13.
CN202010622180.2A 2020-06-30 2020-06-30 Pixel driving circuit, organic light-emitting display panel and display device Active CN111599309B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117542318A (en) * 2020-07-15 2024-02-09 武汉华星光电半导体显示技术有限公司 Pixel circuit, driving method thereof and display device
US20230395024A1 (en) * 2020-11-30 2023-12-07 Chengdu Boe Optoelectronics Technology Co., Ltd. Drive circuit, driving method therefor, and display device
CN113763880B (en) * 2021-09-18 2023-03-14 广州国显科技有限公司 Pixel circuit, driving method of pixel circuit and display device
CN114141195B (en) * 2021-12-10 2023-05-02 Tcl华星光电技术有限公司 Light emitting device driving circuit, display panel and driving method thereof
CN114495825B (en) * 2022-01-28 2023-09-01 武汉天马微电子有限公司 Pixel driving circuit, driving method, display panel and display device
CN114203115A (en) * 2022-01-28 2022-03-18 绵阳惠科光电科技有限公司 Driving voltage compensation circuit, driving circuit, pixel driving circuit and display device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106097964A (en) * 2016-08-22 2016-11-09 京东方科技集团股份有限公司 Image element circuit, display floater, display device and driving method
CN106910468A (en) * 2017-04-28 2017-06-30 上海天马有机发光显示技术有限公司 The driving method of display panel, display device and image element circuit
CN107945740A (en) * 2018-01-05 2018-04-20 信利（惠州）智能显示有限公司 Organic light-emitting display device, image element circuit and its driving method
CN108320710A (en) * 2017-12-13 2018-07-24 友达光电股份有限公司 Pixel circuit
CN108630141A (en) * 2017-03-17 2018-10-09 京东方科技集团股份有限公司 Pixel circuit, display panel and its driving method
CN109192143A (en) * 2018-09-28 2019-01-11 昆山国显光电有限公司 Pixel circuit and its driving method, display panel, display device
CN109215582A (en) * 2018-09-28 2019-01-15 昆山国显光电有限公司 Display panel, the driving method of pixel circuit and display device
CN110164361A (en) * 2019-06-05 2019-08-23 京东方科技集团股份有限公司 A kind of pixel-driving circuit and its driving method and display panel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110277060B (en) * 2019-05-21 2021-11-16 合肥维信诺科技有限公司 Pixel circuit and display device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106097964A (en) * 2016-08-22 2016-11-09 京东方科技集团股份有限公司 Image element circuit, display floater, display device and driving method
CN108630141A (en) * 2017-03-17 2018-10-09 京东方科技集团股份有限公司 Pixel circuit, display panel and its driving method
CN106910468A (en) * 2017-04-28 2017-06-30 上海天马有机发光显示技术有限公司 The driving method of display panel, display device and image element circuit
CN108320710A (en) * 2017-12-13 2018-07-24 友达光电股份有限公司 Pixel circuit
CN107945740A (en) * 2018-01-05 2018-04-20 信利（惠州）智能显示有限公司 Organic light-emitting display device, image element circuit and its driving method
CN109192143A (en) * 2018-09-28 2019-01-11 昆山国显光电有限公司 Pixel circuit and its driving method, display panel, display device
CN109215582A (en) * 2018-09-28 2019-01-15 昆山国显光电有限公司 Display panel, the driving method of pixel circuit and display device
CN110164361A (en) * 2019-06-05 2019-08-23 京东方科技集团股份有限公司 A kind of pixel-driving circuit and its driving method and display panel

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