# US 2013/0155355 A1 · Filter unit of liquid crystal display and liquid crystal display

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- Number: US 2013/0155355 A1
- Document ID: US20130155355A1
- Status: Published application
- Kind: A1
- Application number: 13/450,439
- Filed: 2012-04-18
- Published: 2013-06-20
- Earliest claimed: 2011-12-20
- Assignees: Au Optronics Corporation
- Inventors: Chia-Hao Li; Chen-Hsien Liao; Kuei-Bai Chen; Chien-Kai Chen
- Web page: https://patentgrep.com/patent/US20130155355A1

## CPC

- G02B 5/20: Filters (polarising elements G02B5/30)
- G02F 1/133516: {Methods for their manufacture, e.g. printing, electro-deposition or photolithography}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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

## Abstract

A filter unit of a LCD and a LCD are provided. Under a CIE standard C light source, an x-coordinate value of light passing through the filter unit in a CIE 1931 chromaticity coordinate is greater than or equal to 0.302, an illumination Y value of the light is greater than or equal to 60, and relative to the standard color sample in which (x, y) is (0.299, 0.595) in a CIE 1931 chromaticity coordinate, the CIE DE2000 color difference value ΔE00 of the light is less than 1.

## Claims

### Claim 1

A filter unit of a liquid crystal display (LCD), wherein under a CIE standard C light source, an x-coordinate value of light passing through the filter unit in a CIE 1931 chromaticity coordinate is greater than or equal to 0.302, an illumination Y value of the light is greater than or equal to 60, and relative to a standard color sample in which (x, y) is (0.299, 0.595) in a CIE 1931 chromaticity coordinate, a CIE DE2000 color difference value ΔE00 of the light is less than 1.

### Claim 2 (depends on 1)

The filter unit of an LCD according to claim 1, wherein a thickness range of the filter unit is 1.97 microns≦the thickness of the filter unit 2.27 microns.

### Claim 3 (depends on 1)

The filter unit of an LCD according to claim 1, comprising:
a filter layer; and
a transparent conductive layer, covering the filter layer.

### Claim 4 (depends on 3)

The filter unit of an LCD according to claim 3, wherein a thickness range of the filter layer is 1800 nanometers≦the thickness of the filter layer≦2150 nanometers.

### Claim 5 (depends on 3)

The filter unit of an LCD according to claim 3, wherein a thickness range of the transparent conductive layer is 100 nanometers≦the thickness of the transparent conductive layer≦150 nanometers.

### Claim 6

A liquid crystal display (LCD), comprising:
a backlight module; and
a liquid crystal panel, disposed above the backlight module, the liquid crystal panel has a filter unit, wherein under a CIE standard C light source, an x-coordinate value of light passing through the filter unit in a CIE 1931 chromaticity coordinate is greater than or equal to 0.302, an illumination Y value of the light is greater than or equal to 60, and relative to a standard color sample in which (x, y) is (0.299, 0.595) in a CIE 1931 chromaticity coordinate, a CIE DE2000 color difference value ΔE00 of the light is less than 1.

### Claim 7 (depends on 6)

The LCD according to claim 6, wherein a thickness range of the filter unit is 1.97 microns≦the thickness of the filter unit≦2.27 microns.

### Claim 8 (depends on 6)

The LCD according to claim 6, wherein the filter unit comprises:
a filter layer; and
a transparent conductive layer, covering the filter layer.

### Claim 9 (depends on 8)

The LCD according to claim 8, wherein a thickness range of the filter layer is 1800 nanometers≦the thickness of the filter layer≦2150 nanometers.

### Claim 10 (depends on 8)

The LCD according to claim 8, wherein a thickness range of the transparent conductive layer is 100 nanometers≦the thickness of the transparent conductive layer≦150 nanometers.