# US 10,120,234 B2 · Liquid crystal display apparatus

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- Number: US 10,120,234 B2
- Document ID: US10120234B2
- Status: Granted
- Kind: B2
- Application number: 14/707,372
- Filed: 2015-05-08
- Published: 2016-06-09
- Granted: 2018-11-06
- Earliest claimed: 2014-12-08
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., LTD.
- Inventors: Jeongho Lee; Hyangyul Kim; Soojung Chae; Junho Song
- Web page: https://patentgrep.com/patent/US10120234B2

## CPC

- G02F 1/133528: {Polarisers}
- G02B 5/3058: {comprising electrically conductive elements, e.g. wire grids, conductive particles}
- G02B 6/0065: {Manufacturing aspects; Material aspects}
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/133514: {Colour filters}
- G02F 1/133707: {Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes}
- G02B 6/0011: {the light guides being planar or of plate-like form}
- G02F 1/133531: {characterised by the arrangement of polariser or analyser axes}
- G02F 1/133548: {Wire-grid polarisers}
- G02F 1/133565: {inside the LC elements, i.e. between the cell substrates}
- 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

A liquid crystal display apparatus includes a first substrate partitioned into a first region which displays an image and a second region through which external light passes, a second substrate facing the first substrate, a liquid crystal layer between the first substrate and the second substrate, a first polarizer on one side of the first substrate, and a second polarizer on one side of the second substrate, wherein at least one of the first polarizer and the second polarizer includes an opening positioned in the second region.

## Claims

### Claim 1

A liquid crystal display apparatus comprising:
a first substrate partitioned into a first region which displays an image and a second region through which external light passes;
a second substrate facing the first substrate;
a liquid crystal layer disposed between the first substrate and the second substrate;
a first polarizer disposed on one side of the first substrate;
a second polarizer disposed on one side of the second substrate, wherein at least one selected from the first polarizer and the second polarizer comprises an opening positioned in the second region, none of the first and second polarizers covering the second region;
a color filter disposed between the first substrate and the liquid crystal layer and configured to assign a predetermined color to incident light;
a black matrix partitioning the color filter,
a first electrode disposed on the first substrate;
a second electrode disposed between the first electrode and the first substrate,
wherein the color filter and the black matrix are not in the second region and the color filter and the black matrix are disposed between the second electrode and the first polarizer; and
wherein the first polarizer is disposed between the first substrate and the color filter, the first polarizer is disposed between the first substrate and the black matrix, and the second polarizer is disposed between the second substrate and the liquid crystal layer.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the at least one selected from the first polarizer and the second polarizer that comprises the opening is a wire-grid polarizer (WGP).

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the first polarizer is between the first substrate and the liquid crystal layer and comprises the opening.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein the second polarizer is on an opposite side of a side of the second substrate that faces the first substrate to correspond to the first region.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the first polarizer and the second polarizer have polarization axes substantially perpendicular to each other.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the first region and the second region alternate in a first direction, and
wherein the first region comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel emitting light of different colors and arranged in a second direction substantially perpendicular to the first direction.

### Claim 7

A liquid crystal display apparatus comprising:
a first substrate partitioned into a first region which displays an image and a second region through which external light passes;
a second substrate facing the first substrate;
a liquid crystal layer disposed between the first substrate and the second substrate;
a first polarizer disposed on one side of the first substrate;
a second polarizer disposed on one side of the second substrate, wherein at least one selected from the first polarizer and the second polarizer comprises an opening positioned in the second region;
a first electrode and a second electrode which generate an electric field in the liquid crystal layer, wherein at least one selected from the first electrode and the second electrode is not in the second region,
a color filter disposed between the first substrate and the liquid crystal layer and configured to assign a predetermined color to incident light;
a black matrix partitioning the color filter,
wherein the color filter and the black matrix are not in the second region and the color filter and the black matrix are disposed between the second electrode and the first polarizer; and
wherein the first polarizer is disposed between the first substrate and the color filter, the first polarizer is disposed between the first substrate and the black matrix, and the second polarizer is disposed between the second substrate and the liquid crystal layer.

### Claim 8 (depends on 7)

The apparatus of claim 7, wherein the second electrode is disposed in at least the first region on the first substrate, and the first electrode has a form of slits in the first region on the second electrode.

### Claim 9 (depends on 7)

The apparatus of claim 7, wherein the first electrode is disposed in the first region on the first substrate, and the second electrode is disposed in at least the first region on a surface that faces the first substrate of the second substrate.

### Claim 10 (depends on 1)

The apparatus of claim 1, further comprising a light guiding plate disposed on the opposite surface of a surface that faces the second substrate of the first substrate, and a light source configured to supply light to the light guiding plate.

### Claim 11 (depends on 10)

The apparatus of claim 10, wherein the light source faces a side surface of the light guiding plate, and the light guiding plate comprises a material capable of transmitting light.