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Flexible OLED display panel and preparation method thereof

一种显示面板、柔性基板的技术，应用在半导体/固态器件制造、光伏发电、仪器等方向，能够解决断裂、剥离、膜层分离等问题，达到避免裂纹、提高显示品质、防止水氧入侵发光功能层的效果

Active Publication Date: 2020-07-14
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

[0005] The invention provides a flexible OLED display panel and a preparation method thereof, which can solve the technical problem that the rounded corner area of ​​the flexible OLED display panel is prone to film layer separation, peeling or fracture in the prior art

Method used

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

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Embodiment Construction

[0028] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figure, units with similar structures are indicated by the same reference numerals, and the dotted lines in the figure indicate that they do not exist in the structure, and only illustrate the shape and position of the structure.

[0029] The present invention aims at the technical problem that the rounded corner area of ​​the flexible OLED display panel is prone to film layer separation, peeling or fracture in the prior art, and this embodiment can sol...

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Abstract

The invention provides a flexible OLED display panel and a preparation method thereof. The flexible OLED display panel comprises a display area and a non-display area surrounding the display area; thenon-display area comprises corner sub-areas located at the corners of the flexible substrate; a TFT layer is provided with a retaining wall surrounding the display area in the non-display area; the TFT layer is provided with at least one groove in at least one side of the retaining wall in the corner sub-areas; and the side wall of the groove is provided with an undercut structure. According to the OLED display panel of the invention, the retaining wall is located on the TFT layer and extends to a light-emitting function layer; the groove adjacent to the retaining wall extends into a flexiblesubstrate, and therefore, the retaining wall and the adjacent groove form an up-and-down arc-shaped surface, a wavy surface or a zigzag surface, and thus, the bent surface can delay and release the bending stress of the OLED display panel, an edge packaging layer is prevented from generating cracks, water and oxygen are effectively prevented from invading the light-emitting function layer, and the display quality of the OLED display panel is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible OLED display panel and a preparation method thereof. Background technique [0002] With the development of display technology, flexible organic light emitting diode (Organic Light Emitting Diode, OLED) display panels are widely used due to their advantages such as rollability, small footprint, self-illumination, flexible display and large-area full-color gamut display. each field. [0003] The existing flexible OLED display panels are mainly stacked on the flexible substrate by sequentially stacking each functional layer in the display panel. During the bending process, due to the different degrees of deformation between different functional layers, local stress concentration may be caused, thereby causing damage to the structure. Destruction affects the normal use of the display panel, especially the rounded area of ​​the OLED display panel is prone to cracks, and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32G09F9/30H10K99/00
CPCG09F9/301H10K59/8791H10K59/8731Y02E10/549H10K59/40H10K2102/311H10K50/8445H10K50/86H10K59/12H10K71/00H10K77/111H10K59/1201
Inventor 郑敏金武谦
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD