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Foldable electronic paper display device and manufacturing method thereof

A technology of display equipment and electronic paper, which is applied in the direction of instruments, identification devices, etc., and can solve problems such as stress concentration, detachment of protective sheets, and rupture of display medium layers

Inactive Publication Date: 2018-10-16
E INK HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, in regions with large strain differences, the display device may experience delamination between layers, such as the detachment of the protective sheet from the surface of the flexible panel
In addition, if the flexible panel is an electronic paper panel, in the dynamic fatigue test, there will be stress concentration on the periphery of the bending area, which will cause the display medium layer with microcapsules to break

Method used

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  • Foldable electronic paper display device and manufacturing method thereof
  • Foldable electronic paper display device and manufacturing method thereof
  • Foldable electronic paper display device and manufacturing method thereof

Examples

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Embodiment Construction

[0034] Several embodiments of the present invention are described below with reference to the accompanying drawings. In order to simplify the accompanying drawings, some well-known and commonly used structures and components will be shown in a simple and schematic manner.

[0035] figure 1 A cross-sectional view showing a foldable electronic paper display device 100 in an unfolded state according to an embodiment of the present invention is shown. figure 2 draw figure 1 A cross-sectional view of the foldable electronic paper display device 100 in a folded state. see also figure 1 and figure 2 , the foldable electronic paper display device 100 includes an electronic paper display panel 110 and a rear protection sheet 120 . The electronic paper display panel 110 has a bending area A1 and two planar areas A2 and A3 adjacent to two edges of the bending area A1 respectively. When the electronic paper display panel 110 is folded, the bending area A1 is approximately U-shaped,...

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Abstract

The invention discloses a foldable electronic paper display device and a manufacturing method of the foldable electronic paper display device. The foldable electronic paper display device comprises anelectronic paper display panel and a rear protection plate, wherein the electronic paper display panel is provided with a bent area and two plane areas respectively being adjacent to two edges of thebent area. When the electronic paper display panel is folded, the two plane areas are approximately parallel to each other. The rear protection plate is positioned on the back of the electronic paperdisplay panel, and is positioned in the plane areas and the bent area. The rear protection plate is provided with at least one groove, the at least one groove is at least partially positioned in thebent area, and the width of the at least one groove is smaller than that of the bent area. The rear protection plate is provided with the at least one groove positioned in the bent area, therefore, the internal stress between the layers can be reduced in the bent area with large strain differences, and thus the rear protection plate is prevented from being separated from the back of the electronicpaper display panel.

Description

technical field [0001] The invention relates to a foldable electronic paper display device and a manufacturing method of the foldable electronic paper display device. Background technique [0002] Due to the advent of flexible panels (such as electronic paper display panels), foldable display devices have appeared in the current electronic product market. Generally speaking, in order to protect the front and back of the flexible panel, two protective sheets are used to cover the front and back of the flexible panel respectively. [0003] However, when the flexible panel is bent along the center line, the two protective sheets are located on opposite sides of the flexible panel, so there will be a maximum amount of deformation to generate interlayer internal stress. As a result, in regions with large strain differences, delamination may occur between layers of the display device, for example, the protective sheet is detached from the surface of the flexible panel. In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/30G09F9/37
CPCG09F9/301G09F9/372
Inventor 林益生叶佳俊郑国兴
Owner E INK HLDG INC
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