# US 10,310,346 B2 · Liquid crystal display having light valve

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- Number: US 10,310,346 B2
- Document ID: US10310346B2
- Status: Granted
- Kind: B2
- Application number: 15/797,993
- Filed: 2017-10-30
- Published: 2018-05-03
- Granted: 2019-06-04
- Earliest claimed: 2016-10-31
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: Wondoo Kim; Kibok Park; Joondong Lee; Kakyung Kim
- Web page: https://patentgrep.com/patent/US10310346B2

## CPC

- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- G02F 1/13471: {in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells (G02F1/13475 takes precedence)}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- G02B 6/0055: {Reflecting element, sheet or layer}
- G02F 1/133528: {Polarisers}
- G02F 1/133601: {for spatial active dimming}
- G02F 1/136222: {Colour filters incorporated in the active matrix substrate}
- G02F 2201/123: pixel
- 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

The present disclosure relates to a liquid crystal display (or, LCD) including a light valve. The present disclosure provides a liquid crystal display comprising: a back light unit; a light valve panel disposed in front of the back light unit, and including a plurality of first unit pixel areas; and a video display panel disposed in front of the light valve panel, and including a plurality of second unit pixel areas.

## Claims

### Claim 1

A liquid crystal display, comprising:
a back light unit;
a light valve panel disposed on the back light unit, and including a plurality of first unit pixel areas; and
a video display panel disposed on the light valve panel, and including a plurality of second unit pixel areas,
wherein:
the first unit pixel areas and the second unit pixel areas overlap and are misaligned with each other;
the second unit pixel areas have a quadrate shape;
the first unit pixel areas have a rhombus shape with respect to the second unit pixel areas; and
one corner of the rhombus shape of each of the first unit pixel areas is disposed as shifted to one side from a center point of the quadrate shape of a respective second unit pixel.

### Claim 2 (depends on 1)

The liquid crystal display according to the claim 1,
wherein the first unit pixel areas correspond to a 45-degree rotation of the second unit pixel areas.

### Claim 3 (depends on 1)

The liquid crystal display according to the claim 1,
wherein the first unit pixel areas have a different size than the second unit pixel areas.

### Claim 4 (depends on 3)

The liquid crystal display according to the claim 3, wherein the first unit pixel areas have a size that is within a range of 0.5 times to 2.8 times, inclusive, of a size of the second unit pixel areas.

### Claim 5 (depends on 1)

The liquid crystal display according to the claim 1, wherein the light valve panel includes:
a data line extending in a first direction along a first side of the rhombus shape;
a gate line extending in a second direction along a second side of the rhombus shape;
a thin film transistor disposed at one corner of the rhombus shape; and
a pixel electrode connected to the thin film transistor, and disposed within the first unit pixel area.

### Claim 6 (depends on 1)

The liquid crystal display according to the claim 1, wherein each of the second unit pixel areas includes a plurality of sub pixel areas.

### Claim 7 (depends on 6)

The liquid crystal display according to the claim 6, wherein the sub pixel areas include:
a red sub pixel;
a green sub pixel; and
a blue sub pixel.