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Flexible display module

A flexible display and module technology, used in identification devices, instruments, photovoltaic power generation, etc., can solve problems such as display function failure, reduce tangential tensile stress, improve the probability of cracks and film peeling, and ensure reliability. sexual effect

Active Publication Date: 2021-06-04
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

[0004] The purpose of the present invention is to provide a flexible display module to solve the problem that the display function fails due to cracks in the inorganic layer during the lamination process or the reliability test process of the flexible organic light emitting diode display module

Method used

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0015] In the traditional technology, the flexible display panel and the 3D glass protective cover are bonded together by UV-type optical glue. After lamination and pressure defoaming, the UV-type optical adhesive is cured by a UV light source that emits ultraviolet light of a specific wavelength, so that the molecular chain polymerization occurs in the colloid of the UV-type optical adhesive, which strengthens the UV-type optical adhesive and 3D glass. Protects the adh...

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Abstract

The invention discloses a flexible display module. The flexible display module is provided with a bent area and a plane area adjacent to the bent area. The flexible display module comprises a flexible display panel, a protective cover plate and a transparent adhesive layer. The transparent adhesive layer is used for bonding the flexible display panel and the protective cover plate, and the storage modulus of at least one part, corresponding to the bent area, of the transparent adhesive layer is smaller than that of at least one part, corresponding to the plane area, of the transparent adhesive layer. The storage modulus of at least one part, corresponding to the bent area, of the transparent adhesive layer is smaller than the storage modulus of at least one part, corresponding to the plane area, of the transparent adhesive layer, so that tangential tensile stress generated at the interface between the transparent adhesive layer and the flexible display panel due to the restoring force effect on bending is reduced, the probability that an inorganic film layer of the flexible display panel generates cracks and the film layer is stripped in a large-curvature state is reduced, and the reliability of a product is guaranteed.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a flexible display module. Background technique [0002] At present, one of the important features of flexible organic light emitting diode display modules is bendability. For a flexible organic light emitting diode display module including a 3D protective cover plate with a fixed curvature and a flexible organic light emitting diode display panel, the flexible organic light emitting diode panel and the 3D protective cover plate are bonded by a cured ultraviolet (Ultraviolet, UV) optical adhesive. However, during the lamination process of the 3D protective cover plate and the flexible OLED display panel or during the reliability test, the inorganic layer in the flexible OLED display panel is cracked due to the excessive bending tensile stress, and the cracks further lead to The flexible organic light emitting diode display panel has the problem of display function failure. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/30
CPCG09F9/301Y02E10/549B32B17/10H10K2102/311H10K50/844B32B7/022H10K59/873H10K59/12H10K59/871B32B5/18B32B7/12B32B15/046B32B15/20B32B27/308B32B2305/72B32B2307/302B32B2307/412B32B2307/42B32B2307/54B32B2457/206
Inventor 唐志舜
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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