Liquid crystal display device having an optical fiber substrate including fibers whose periphery is coated with a conductive material

• US 5,148,297 A
• Filed: 07/12/1991
• Issued: 09/15/1992
• Est. Priority Date: 07/12/1990
• Status: Expired due to Term

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ishii, Yutaka, Mitsui, Seiichi, Kimura, Naofumi, Ban, Mariko
• Primary Examiner(s): Miller, Stanley D.
• Assistant Examiner(s): MAI, HUY KIM
• Application Number:
  US07/728,976
• Time in Patent Office: 431 Days
• Field of Search: 350/335, 350/339 F, 350/339 R, 350/334, 350/96.13, 350/338, 359/42, 359/62, 359/82, 359/88, 359/53
• US Class Current: 349/79
• CPC Class Codes: G02F 1/133524 Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells

Abstract

A liquid crystal display includes a plurality of laminated liquid crystal layers and a transparent substrate interposed between the liquid crystal layers, the transparent substrate being formed of an aggregate of optical fibers arranged so that a ray may be introduced between main and back surfaces of the substrate, whereby aberration of a display image of adjacent liquid crystal layers caused by a difference of a viewing angle can be prevented.

Claims

1. A liquid crystal display device comprising:

a plurality of liquid crystal layers;

an optical fiber substrate interposed therebetween;

a pair of transparent substrates disposed on the top and the bottom of the plurality of liquid crystal layers, electrodes of the same pattern disposed on both side of the optical fiber sustrate; and

electrodes disposed on the inner sides of the pair of transparent substrates,

wherein the optical fiber substrate is formed of an aggregate of optical fibers arranged so that a ray of light incident upon the optical fiber substrate perpendicularly passes therethrough, whereby the aberration of a display image of the plurality of liquid crystal layers caused by the difference of a viewing angle can be prevented.

2. A liquid crystal display of claim 1, wherein each liquid crystal layer comprises a liquid crystal inserted between the substrates whose twist angle ranges from 90°

to 360°

.

3. A liquid crystal display of claim 1, wherein the liquid crystal layer comprises a guest host liquid crystal.

4. A liquid crystal display of claim 1, wherein the liquid crystal layers comprise three layers of guest host liquid crystals which provide a multicolor display by manipulation of a phase change state and a non-phase change state of each layer.

5. A liquid crystal display of claim 1, wherein the electrodes include a reflecting electrode.

7. A liquid crystal display of claim 1 or 6, wherein the two adjacent liquid crystal layers comprise two liquid crystal layers whose twist directions are opposite to each other.

8. A liquid crystal display of claim 1 or 6, wherein the orientations of liquid crystal molecules on both sides of the optical fiber substrate cross at right angles.

9. A liquid crystal display of claim 1 or 6, wherein the liquid crystal layers comprise materials to display cyanogen, magenta and yellow.

6. A liquid crystal display device comprising:

a plurality of liquid crystal layers;

an optical fiber substrate interposed therebetween;

a pair of transparent substrates disposed on the top and the bottom of the plurality of liquid crystal layers;

electrodes of the same pattern disposed on both sides of the optical fiber substrate; and

electrodes disposed on the inner sides of the pair of transparent substrates,

wherein the optical fiber substrate comprises fibers whose periphery is coated with a conductive material for short circuiting across the electrodes on the both sides of the optical fiber substrate.