# US 11,442,315 B2 · Liquid crystal display device comprising a first pixel for displaying a first-viewpoint image and a second pixel for displaying a second-viewpoint image

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- Number: US 11,442,315 B2
- Document ID: US11442315B2
- Status: Granted
- Kind: B2
- Application number: 17/391,333
- Filed: 2021-08-02
- Published: 2022-01-20
- Granted: 2022-09-13
- Earliest claimed: 2011-02-08
- Assignees: Tianma Microelectronics Co., Ltd.
- Applicants: Tianma Microelectronics Co., Ltd.
- Inventors: Kenichi Takatori
- Web page: https://patentgrep.com/patent/US11442315B2

## CPC

- G02F 1/133753: {with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle}
- G02B 30/30: involving parallax barriers
- G02F 1/1323: {Arrangements for providing a switchable viewing angle}
- G02F 1/133742: {for homeotropic alignment}
- G02F 1/133757: {with different alignment orientations}
- G02F 1/13712: {the liquid crystal having negative dielectric anisotropy}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

To provide a vertical alignment liquid crystal display device capable of achieving a high-definition image display. Tilt directions of liquid crystal molecules when a voltage is applied are within a plane that is in parallel to a border between a first pixel and a second pixel, and are different by 180 degrees between the first and second pixels. The first pixel is constituted with three sub-pixels for R, G, and B arranged in a direction in parallel to the border. Similarly, the second pixel is constituted with three sub-pixels for R, G, and B. The tilt directions of the liquid crystal molecules when a voltage is applied are different by 180 degrees from each other between the sub-pixels for R of the first and second pixels, between the sub-pixels for G of the first and second pixels, and between the sub-pixels for B of the first and second pixels.

## Claims

### Claim 1

A liquid crystal display device comprising a liquid crystal exhibiting negative dielectric anisotropy sandwiched between a pair of substrates, wherein liquid crystal molecules constituting the liquid crystal are initially aligned almost vertically to the pair of substrates, and display units each including at least a first pixel for displaying a first-viewpoint image and a second pixel for displaying a second-viewpoint image are arranged in a matrix, wherein:
the liquid crystal display device further comprises an optical element for distributing light from the first pixel and light from the second pixel to different directions;
the first pixel and the second pixel are constituted with a plurality of sub-pixels, respectively;
the sub-pixel is constituted with a first domain and a second domain;
tilt directions of the liquid crystal molecules when a voltage is applied are within a plane that is at an angle of 45 degrees to a border between the first pixel and the second pixel, are different from each other by 90 degrees between the first pixel and the second pixel, and are different from each other by 180 degrees between the first domain and the second domain;
the sub-pixels constituting the first pixel and the sub-pixels constituting the second pixel are arranged in a direction in parallel to the border, respectively; and
the first domain and the second domain constituting the sub-pixel are arranged in a direction vertical to the border.

### Claim 2 (depends on 1)

The liquid crystal display device as claimed in claim 1, wherein
the tilt directions of the liquid crystal molecules when a voltage is applied are different from each other by 90 degrees between the display units neighboring to each other in the direction in parallel to the border.

### Claim 3 (depends on 2)

The liquid crystal display device as claimed in claim 2, wherein
the tilt directions of the liquid crystal molecules when a voltage is applied are different from each other by 180 degrees between the display units neighboring to each other in the direction vertical to the border.