Flexible display panel and preparation method thereof, display device and display module
A flexible display and panel technology, used in identification devices, instruments, photovoltaic power generation, etc., can solve the problems of poor bonding, easy cracking, and insufficient profiling of flexible display screens, and reduce bonding cracks and edge wrinkles. , the effect of reducing the bonding stress and strain
Active Publication Date: 2022-05-20
BOE TECH GRP CO LTD +1
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Problems solved by technology
The edge areas of the four corners of the screen are subject to large tangential compressive stress, which is prone to wrinkles
Moreover, due to the design of the mechanism equipment and the flexible display panel, the profiling of the flexible display is often insufficient when the four sides of the OLED flexible display are curved, and the four corners of the flexible display will be warped, resulting in the flexible display and the cover. Pre-contact occurs, that is, the edge of the flexible display is in contact with the cover first, and then the inside is in contact, forming air bubbles
In this way, after bonding and defoaming, cracks are prone to occur, resulting in poor bonding.
Method used
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[0076] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0077] refer to figure 1 The schematic diagram of the stress distribution simulation of the corner bending area 3 after the flexible display panel in the related art is shown in the related art shows that the maximum tensile stress is concentrated in the middle area of the corner bending area 3 of the flexible display panel. refer to figure 2 The schematic diagram of force analysis in the middle of the corner bending area...
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The invention relates to the field of display technology, and provides a flexible display panel, a preparation method thereof, a display device, and a display module. The flexible display panel includes a plane area, a first bending area, a second bending area and a corner bending area; the first bending area is connected to the first edge of the plane area along a first direction; the second bending area is along the The second direction is connected to the second edge of the plane area, and the second direction is at a set angle to the first direction; the corner bending area is connected to the corner of the plane area, and is connected to the first bending area and the second bending area Between the regions, the corner bending region is provided with multiple sets of first hole groups. After the corner bending region is bent, the width of the first hole group located in the middle of the corner bending region increases, and the width of the first hole group located in the corner bending region The width of the first hole group decreases in the edge region. The tensile strain and the compressive strain are absorbed through the first hole group, reducing lamination cracks and edge area wrinkles of the flexible display panel; no air bubbles are generated.
Description
technical field [0001] The present invention relates to the field of display technology, in particular to a flexible display panel and a method for preparing the flexible display panel, a display device including the flexible display panel, and a display module including the flexible display panel. Background technique [0002] With the rapid development of display technology, the trend of the aesthetics and lightness of electronic products has gradually emerged. OLED (Organiclight-Emitting Diode, organic light emitting diode) Flexible display surface-fitting also develops rapidly. With the maturation of OLED flexible display two-sided curved bonding process, OLED flexible display four-sided curved bonding is increasingly favored by panel manufacturers and mobile phone manufacturers. [0003] However, a technical difficulty in the four-sided curved bonding of OLED flexible displays is corner bonding. As the depth of the OLED flexible display entering the corner arc of the c...
Claims
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IPC IPC(8): G09F9/30
CPCG09F9/301Y02E10/549G06F1/1652G06F1/1637G09G3/035G09G2300/04
Inventor 王亚明陈立强赵东东王作家刘雪燕李旭
Owner BOE TECH GRP CO LTD