# US 7,746,429 B2 · Liquid crystal display panel

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- Number: US 7,746,429 B2
- Document ID: US7746429B2
- Status: Granted
- Kind: B2
- Application number: 11/563,209
- Filed: 2006-11-26
- Published: 2008-04-24
- Granted: 2010-06-29
- Earliest claimed: 2006-10-19
- Assignees: Au Optronics Corporation
- Inventors: Hao-Chieh Lee; Ming-Hung Shih
- Web page: https://patentgrep.com/patent/US7746429B2

## CPC

- G02F 1/1345: Conductors connecting electrodes to cell terminals
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/1339: Gaskets; Spacers; Sealing of cells
- G02F 2202/22: Antistatic materials or arrangements
- 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 liquid crystal display (LCD) panel including a thin film transistor (TFT) array substrate, a color filter substrate, a sealant, and a liquid crystal layer is provided. The TFT array substrate includes a substrate, a plurality of pixel structures, a plurality of scan lines, a plurality of data lines, and a light-shielding pattern. The scan lines and data lines are disposed on the substrate for controlling the operation of the pixel structures. The light-shielding pattern arranged on the periphery of the panel traverses the scan lines and data lines and is electrically insulated from the scan lines and data lines. The sealant is sandwiched between the TFT array substrate and the color filter substrate and is corresponding to the light-shielding pattern. The liquid crystal layer is disposed between the TFT array substrate, the color filter substrate, and the sealant.

## Claims

### Claim 1

A liquid crystal display (LCD) panel, comprising:
a thin film transistor (TFT) array substrate, comprising:
a substrate, having a display region and a sealant region surrounding the display region;
a plurality of pixel structures, disposed on the display region of the substrate;
a plurality of scan lines, disposed on the substrate;
a plurality of data lines, disposed on the substrate, wherein the pixel structures are controlled by the scan lines and the data lines;
a light-shielding pattern, disposed within the sealant region, wherein the light-shielding pattern traverses the scan lines and the data lines, and is electrically insulated from the scan lines and the data lines;
a plurality of common lines, wherein the common lines and the scan lines are alternatively disposed on the substrate in parallel, and the light-shielding pattern is electrically connected to the common lines or a ground terminal;
a color filter substrate;
a sealant, disposed between the TFT array substrate and the color filter substrate, and being corresponding to the light-shielding pattern; and
a liquid crystal layer, disposed between the color filter substrate, the TFT array substrate, and the sealant.

### Claim 2 (depends on 1)

The LCD panel as claimed in claim 1, wherein each of the pixel structures comprises:
a TFT, electrically connected to one of the scan lines and one of the data lines; and
a pixel electrode, electrically connected to the TFT.

### Claim 3 (depends on 1)

The LCD panel as claimed in claim 1, wherein the material of the sealant comprises an ultraviolet curing adhesive.

### Claim 4 (depends on 1)

The LCD panel as claimed in claim 1, wherein the material of the light-shielding pattern comprises a metal material or a non-transparent conductive material.

### Claim 5 (depends on 1)

The LCD panel as claimed in claim 1, wherein the sealant is located above the light-shielding pattern.

### Claim 6 (depends on 1)

The LCD panel as claimed in claim 1, wherein the sealant partially overlaps with the light-shielding pattern.

### Claim 7 (depends on 1)

The LCD panel as claimed in claim 1, wherein the light-shielding pattern comprises a first light-shielding pattern and a second light-shielding pattern, the first light-shielding pattern traverses the data lines, and the second light-shielding pattern traverses the scan lines.

### Claim 8 (depends on 7)

The LCD panel as claimed in claim 7, wherein the data lines in the sealant region are located between the first light-shielding pattern and the substrate, and the TFT array substrate has an insulation layer disposed between the data lines and the first light-shielding pattern.

### Claim 9 (depends on 8)

The LCD panel as claimed in claim 8, wherein the data lines within the sealant region are made of made of a first metal layer, the data lines within the display region are made of a second metal layer, and first metal layer is electrically connected to the second metal layer via a contact hole (CH) at the intersection of the sealant region and the display region.

### Claim 10 (depends on 8)

The LCD panel as claimed in claim 8, wherein the scan lines are located between the second light-shielding pattern and the substrate, and the insulation layer disposed between the scan lines and the second light-shielding pattern.

### Claim 11 (depends on 7)

The LCD panel as claimed in claim 7, wherein the first light-shielding pattern is located between the data lines and the substrate, and the TFT array substrate has an insulation layer disposed between the data lines and the first light-shielding pattern.

### Claim 12 (depends on 11)

The LCD panel as claimed in claim 11, wherein the second light-shielding pattern is located between the scan lines in the sealant region and the substrate, and the insulation layer disposed between the scan lines and the second light-shielding pattern.

### Claim 13 (depends on 12)

The LCD panel as claimed in claim 12, wherein the scan lines within the display region are made of a first metal layer, the scan lines within the sealant region are made of a second metal layer, and the first metal layer is electrically connected to the second metal layer via a contact hole at the intersection of the sealant region and the display region.

### Claim 14 (depends on 11)

The LCD panel as claimed in claim 11, wherein the scan lines are located between the second light-shielding pattern and the substrate, and the insulation layer disposed between the scan lines and the second light-shielding pattern.

### Claim 15 (depends on 7)

The LCD panel as claimed in claim 7, wherein the first light-shielding pattern and the second light-shielding pattern are electrically connected to the common lines.

### Claim 16 (depends on 7)

The LCD panel as claimed in claim 7, wherein the first light-shielding pattern and the second light-shielding pattern are electrically connected to the ground terminal.