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Display panel

A display panel and metal layer technology, applied to static indicators, instruments, electrical components, etc., can solve problems such as high power consumption, large leakage current, flickering, etc., achieve stable display effects, reduce power consumption, and avoid dark state effects bad effect

Active Publication Date: 2021-08-24
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]In the existing 7T1C circuit structure, since the thin film transistors in the pixel circuit are usually formed by the Low Temperature Poly-silicon (LTPS) process, the LTPS process is used to form The leakage current of the thin-film transistor is relatively large, so it is prone to problems such as flickering and high power consumption when using low-frequency display, which affects the display quality

Method used

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Embodiment 1

[0092] Please combine Figure 4 , Image 6 , Figure 8 as well as Figure 10 ,in, Figure 4 It is a schematic diagram of the first structure of the display panel provided by the embodiment of the present application; Image 6 It is a schematic diagram of the planar superposition structure of the first film layers of the display panel provided by the embodiment of the present application; Figure 8 A schematic diagram of the first plane structure of the second metal layer of the display panel provided by the embodiment of the present application; Figure 10 It is a schematic diagram of the first plane structure of the third metal layer of the display panel provided by the embodiment of the present application.

[0093] This embodiment provides a display panel, which includes a substrate 10; and a pixel driving circuit layer (not marked in the figure), including a plurality of pixel driving circuits (not marked in the figure), each of the pixel driving circuits It includes...

Embodiment 2

[0146] Please combine Figure 4 with Figure 5 , the embodiment of the present application provides a display panel, the display panel includes a plurality of light-emitting devices arranged in an array and a pixel driving circuit that drives the light-emitting device D1 to emit light, and the pixel driving circuit includes:

[0147] The first initialization transistor T4 is configured to input the second initialization signal VI2 to the first node Q(N)(M) under the control of the first scanning signal Scan1.

[0148] The switch transistor T2 is used to input the data signal Data to the second node A under the control of the second scanning signal Scan2.

[0149] The driving transistor T1 is used to drive the light emitting device D1 to emit light under the control of the potentials of the first node Q(N)(M) and the second node A.

[0150] The compensation transistor T3 is connected to the driving transistor T1 through the first node Q(N)(M) and the third node B, and is used...

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Abstract

The invention provides a display panel. The display panel comprises a substrate; and a pixel driving circuit layer which comprises a plurality of pixel driving circuits, wherein each pixel driving circuit comprises a first capacitor and a second capacitor, the pixel driving circuit layer comprises a first semiconductor layer, a first metal layer, a second metal layer, a second semiconductor layer, a third metal layer and a fourth metal layer, the first semiconductor layer, the first metal layer, the second metal layer, the second semiconductor layer, the third metal layer and the fourth metal layer are sequentially arranged on the substrate in a stacked mode, and the fourth metal layer comprises a first source electrode, a first drain electrode, a second source electrode and a second drain electrode, the first source electrode and the first drain electrode are electrically connected with the first semiconductor layer, the second source electrode and the second drain electrode are electrically connected with the second semiconductor layer, and the second semiconductor layer is an oxide semiconductor layer, each of the first capacitor and the second capacitor is provided with a capacitor electrode which is arranged on the second metal layer, so that low-frequency display can be realized, and meanwhile, the power consumption of the pixel driving circuit is reduced.

Description

technical field [0001] The present application relates to the display field, in particular to a display panel. Background technique [0002] With the development of display technology, Organic Light Emitting Diode (OLED) display devices are more and more widely used. Compared with liquid crystal displays, OLED displays have low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed, etc. Advantages, at present, OLED displays have begun to replace traditional Liquid Crystal Displays (LCDs) in the field of flat panel displays such as mobile phones, PDAs, and digital cameras. Among them, pixel circuit design is the core technical content of OLED display, which has important research significance. [0003] In the existing 7T1C circuit structure, since the thin film transistors in the pixel circuit are usually formed by the Low Temperature Poly-silicon (LTPS) process, and the leakage current of the thin film transistors formed by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32G09G3/3233
CPCG09G3/3233H10K59/1216H10K59/12H10K59/1213G09G2330/021G09G2300/0852G09G2300/0426G09G3/32G09G2320/0247
Inventor 李波
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD