Pixel drive circuit, display panel and display device
A technology of pixel driving circuit and display panel, applied in the field of display panel and display device, pixel driving circuit, can solve the problem of brightness difference and the like
Active Publication Date: 2022-07-12
BOE TECH GRP CO LTD +1
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Problems solved by technology
However, along the direction away from the source driver of the display panel, there is a voltage drop in the initialization voltage, the driving voltage and the common voltage, and the voltage of the pixel electrode of the OLED is directly related to the driving current flowing through the OLED.
This results in a brightness difference between the side of the OLED display panel near the source driver and the side away from the source driver
Method used
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[0049] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
[0050] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, such as according to the direction of the example descri...
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The present disclosure provides a pixel driving circuit, a display panel and a display device, which belong to the technical field of display. In the pixel driving circuit, the driving transistor is connected to the first node, the second node and the third node, and is used for outputting the driving current to the third node under the control of the first node; one end of the storage capacitor is connected to the first node; the data writing unit connected to the second node; the threshold compensation unit is connected to the first node and the third node; the first lighting control unit is connected to the second node; the second lighting control unit is connected to the third node and the fourth node; the first reset unit is connected to the fourth node, It is used for loading the second power supply voltage to the fourth node in response to the scanning signal; one end of the light-emitting element is connected to the fourth node, and the other end is used for loading the second power supply voltage. The pixel driving circuit can improve the brightness uniformity of the display panel.
Description
technical field [0001] The present disclosure relates to the field of display technology, and in particular, to a pixel driving circuit, a display panel and a display device. Background technique [0002] In some OLED (Organic Electroluminescent Diode) display panels, initialization leads may be set to initialize the pixel electrodes of the OLED, and an initialization voltage may be loaded on the initialization leads. However, in the direction away from the source driver of the display panel, there are voltage drops in the initialization voltage, driving voltage and common voltage, and the voltage of the pixel electrode of the OLED is directly related to the driving current flowing through the OLED. This results in a difference in brightness between an end of the OLED display panel close to the source driver and an end far from the source driver. [0003] It should be noted that the information disclosed in the above Background section is only for enhancement of understandi...
Claims
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IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0233G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0251G09G2300/0426H10K59/131G09G3/3258G09G2320/0242G09G2320/0626
Inventor 刘庭良杨慧娟韩林宏舒晓青廖茂颖董向丹
Owner BOE TECH GRP CO LTD