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Pixel circuit, display panel and display device

A technology of pixel circuit and display panel, which is applied in the fields of pixel circuit, display panel and display device, can solve the problems of large brightness difference in low-resolution display area and poor brightness uniformity of display panel.

Active Publication Date: 2019-04-16
CHENGDU BOE OPTOELECTRONICS TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a pixel circuit, a display panel, and a display device, which can solve the problems of relatively large brightness differences between low-resolution display areas and normal display areas in the display panel and poor brightness uniformity of the display panel in the related art.

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  • Pixel circuit, display panel and display device
  • Pixel circuit, display panel and display device
  • Pixel circuit, display panel and display device

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] The transistors used in all the embodiments of the present invention can be thin film transistors or field effect transistors or other devices with the same characteristics, and the transistors used in the embodiments of the present invention are mainly switching transistors according to their functions in circuits. Since the source and drain of the switching transistor used here are symmetrical, the source and drain are interchangeable. In the embodiments of the present invention, the source is called the first pole, and the drain is called the second pole. According to the form in the accompanying drawings, it is stipulated that the middle terminal of the transistor is the gate, the signal input terminal is the source terminal...

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Abstract

The invention provides a pixel circuit, a display panel and a display device and belongs to the technical field of display. The pixel circuit comprises an adjustment sub-circuit and a drive sub-circuit. The adjustment sub-circuit is connected with a target power end and a drive power end of the drive sub-circuit. The adjustment sub-circuit is used for providing a second drive voltage for the drivepower end of the drive sub-circuit according to a first drive voltage provided by the target power end. The drive sub-circuit is also connected with a data signal end and a light emitting element. The drive sub-circuit is used for outputting a drive current to the light emitting element under the drive of a data voltage provided by the data signal end and the second drive voltage. According to the pixel circuit provided by the invention, light emitting brightness of each pixel in a first display area can be improved, brightness difference between the first display area and a second display area is reduced, and brightness uniformity of the display panel is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit, a display panel and a display device. Background technique [0002] Organic light emitting diodes (organic light emitting diodes, OLEDs), as a current-mode light-emitting device, are increasingly used in high-performance display devices due to their characteristics of self-luminescence, fast response, and wide viewing angle. [0003] In the related art, in order to expand the screen ratio of the OLED display device, a low-resolution display area is usually added at the edge of the normal display area of ​​the display panel, and the pixel density of the low-resolution display area is lower than that of the normal display area. Wherein, the low-resolution display area can be used to display power icons, signal icons, time icons, and the like. [0004] However, since the low-resolution display area includes fewer pixels, the brightness of the low-resolution displa...

Claims

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Application Information

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IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 陆旭尚飞梁恒镇王鑫刘练彬张志广兰传艳朱潇龙张昌张斌冯彬峰
Owner CHENGDU BOE OPTOELECTRONICS TECH CO LTD
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