Flexible display panel and preparation method thereof

一种柔性显示、柔性基板的技术，应用在静态指示器、光伏发电、仪器等方向，能够解决大应力、裂纹、断裂等问题，达到降低IR压降、降低制程风险、提高弯折性能的效果

Inactive Publication Date: 2019-04-26
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

Thin-film transistors (TFTs) currently used to drive OLEDs will prepare an inorganic dielectric insulating layer behind the second gate layer. This layer tends to accumulate large stress during the bending process, and is prone to cracks or even fractures. , seriously affecting the service life of flexible displays
In addition, in the existing panel manufacturing process, there will be IR voltage drop (IR-Drop, which refers to a phenomenon in which the voltage on the power supply and ground network in the integrated circuit drops or rises), which affects the display uniformity of the panel, and there are process risks

Method used

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  • Flexible display panel and preparation method thereof
  • Flexible display panel and preparation method thereof
  • Flexible display panel and preparation method thereof

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Embodiment Construction

[0013] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Furthermore, the present disclosure repeats reference numerals and / or reference letters in different examples, such repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0014] The preparation method of the flexible display panel of the present invention improves the bending performance of the flexible display panel by using an organic material with better bending performance as the dielectric insulating layer; at the same time, th...

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Abstract

The invention discloses a flexible display panel and a preparation method thereof. The bending performance of the flexible display panel is improved by adopting an organic material with better bendingperformance as a dielectric insulating layer; contact holes in a display area and deep holes in a bending area are dug behind an insulating layer of a second grid electrode, so that a part of the contact holes are completed in a first source drain metal layer to reduce the density of hole digging of a second source drain metal layer, and the high PPI is ensured while the bending performance of the panel is improved; double-layer SD structural processing is adopted, so that IR voltage drop can be reduced, and the display uniformity of the panel can be improved; wiring of the bending area is designed to be double-layer metal wiring, so that the IR voltage drop can be further reduced, and the processing risk is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible display panel and a preparation method thereof. Background technique [0002] Organic Light-Emitting Diode (OLED for short) is more and more widely used due to the advantages of light weight, self-illumination, wide viewing angle, low driving voltage, high luminous efficiency, low power consumption, and fast response speed. In particular, flexible OLED display devices have become the main field of research and development in the field of display technology due to their characteristics of being bendable and easy to carry. [0003] Flexible displays need to be rolled up or bent, or even bent frequently, during use. Thin-film transistors (TFTs) currently used to drive OLEDs will prepare an inorganic dielectric insulating layer behind the second gate layer. This layer tends to accumulate large stress during the bending process, and is prone to cracks or even fractures. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32G09F9/30
CPCG09F9/301H10K59/1213H10K59/131H10K59/1201G09G3/3208G09G2320/0223Y02E10/549H10K59/124H10K77/111H10K2102/311G06F1/1652H10K50/81H10K59/122H10K71/621
Inventor 杨薇薇
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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