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Reflective bistable nematic liquid crystal display device

A liquid crystal display device, a bistable technology, applied in static indicators, optics, instruments, etc., can solve the problems of increasing power consumption, stability and reproducibility settings, cumbersome manufacturing processes, etc., to achieve bright display, improve display Quality, the effect of simplifying the manufacturing process

Inactive Publication Date: 2005-11-16
ALPS ALPINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A transmissive liquid crystal display is equipped with a backlight device on the back side of the liquid crystal panel. In order to use the backlight emitted from this device as illumination light, the power consumption is increased.
[0008] In order to save power, it is considered that the bistable nematic liquid crystal display device is suitable for the reflective type, but the liquid crystal cell equipped with a reflector with a concave-convex reflective surface such as a diffuse reflective surface or a light-scattering surface has two anchoring forces, strong and weak. oriented films, it is difficult to control these anchoring forces well to achieve stability and reproducibility
In the bistable method, narrow gaps are required on the basis of strong and weak anchoring force control. Therefore, the manufacturing process is cumbersome, and it is necessary to form a strong or weak anchor on the concave-convex surface of the reflector as described above. The alignment film with anchoring force is more cumbersome, which makes it difficult to set up alignment films with strong and weak anchoring forces with good stability and reproducibility

Method used

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Embodiment Construction

[0058] Hereinafter, embodiments of the reflective bistable nematic liquid crystal display device of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

[0059] figure 1 It is a figure which shows typically the partial cross-sectional structure including the edge part of the reflection type bistable nematic liquid crystal display device which is an embodiment of this invention.

[0060] exist figure 1 Among them, the schematic structure of the reflective bistable nematic liquid crystal display device 1 of the present invention is that the first and second substrates (a pair of substrates) 10 and 20 facing each other sandwiching the chiral nematic liquid crystal layer 30 pass through the A ring-shaped sealing material 40 is provided on the peripheral portions of the two substrates 10 and 20 to be integrally joined.

[0061] On the liquid crystal layer 30 side of the first substrate 10 ,...

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Abstract

PROBLEM TO BE SOLVED: To provide a reflective bistable nematic liquid crystal display device in which two kinds of alignment layers with strong and weak anchoring properties are stably disposed and whose manufacturing step is simplified.

Description

technical field [0001] The present invention relates to a reflective bistable nematic liquid crystal display device which can be applied to an electronic book, an electronic notebook, and the like in which data such as characters displayed once can be held for a long time until reset. Background technique [0002] A bistable liquid crystal display device using a nematic liquid crystal is known as one type of mode liquid crystal display device that performs display by a simple matrix type driving method. This bistable liquid crystal display device does not use a TFT (Thin Film Transistor) active element, can respond at a high speed, and can store displayed data for a long period of time. [0003] As a conventional bistable nematic liquid crystal display device, a nematic liquid crystal is sandwiched by a predetermined cell gap between a pair of upper and lower substrates, and a strong anchoring force (strong alignment force) is formed on the inner surface side of one of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/139G02F1/1335G02F1/1337
CPCG02F2001/133749G02F1/1391G02F1/133711G02F2202/28G02F1/133553G02F1/133749
Inventor 星野敏明
Owner ALPS ALPINE CO LTD
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