# US 2020/0401002 A1 · Antistatic display panel and manufacturing method thereof

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- Number: US 2020/0401002 A1
- Document ID: US20200401002A1
- Status: Published application
- Kind: A1
- Application number: 16/469,160
- Filed: 2019-04-09
- Published: 2020-12-24
- Earliest claimed: 2018-12-27
- Assignees: Wuhan China Staropoelectronicstechnologyco.,Ltd
- Applicants: Wuhan China Staropoelectronicstechnologyco.,Ltd
- Inventors: Gaiping LU
- Web page: https://patentgrep.com/patent/US20200401002A1

## CPC

- G02F 1/136204: {Arrangements to prevent high voltage or static electricity failures}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- H05F 3/00: Carrying-off electrostatic charges ({from shoes A43B7/36}; from living beings A61N1/14; {from tyres B60C19/08; from vehicles B60R16/06; from aircraft B64D45/02; from large containers B65D90/46})
- H05K 1/0259: {Electrostatic discharge [ESD] protection}
- H05K 1/189: characterised by the use of flexible or folded printed circuits
- G02F 2202/22: Antistatic materials or arrangements
- H05K 2201/10128: Display
- H05K 2201/10136: Liquid Crystal display [LCD]
- 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
- H05F: STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An antistatic display panel and a manufacturing method thereof are provided. The antistatic display panel includes a display area, a flexible circuit board, a driving chip, and an electrostatic discharge circuit. The driving chip is fixed on a surface of the flexible circuit board and is bound to a lower edge of the display area. A plurality of pins of the driving chip are electrically connected to the electrostatic discharge circuit, and the pins form a closed loop with the electrostatic discharge circuit.

## Claims

### Claim 1

An antistatic display panel, comprising:
a display area;
a flexible circuit board;
a driving chip; and
an electrostatic discharge circuit;
wherein the driving chip is fixed on a surface of the flexible circuit board and is bound near a lower edge of the display area; and
wherein a plurality of pins of the driving chip are electrically connected to the electrostatic discharge circuit, and the pins form a closed loop with the electrostatic discharge circuit.

### Claim 2 (depends on 1)

The antistatic display panel as claimed in claim 1, wherein the electrostatic discharge circuit is composed of two or more shorting bars and metal wires.

### Claim 3 (depends on 2)

The antistatic display panel as claimed in claim 2, wherein a first end of each of the shorting bars is electrically connected to a corresponding one of the pins, and a second end of each of the shorting bars is electrically connected to the metal wires.

### Claim 4 (depends on 2)

The antistatic display panel as claimed in claim 2, wherein the driving chip is disposed along a first direction D1, each of the shorting bars is disposed perpendicular to the first direction D1, and every two adjacent shorting bars are provided with equal distance.

### Claim 5 (depends on 1)

The antistatic display panel as claimed in claim 1, wherein each of the pins comprises a chip input pin and a chip output pin, the chip input pin is electrically connected to a corresponding one of the shorting bars, the chip output pin is electrically connected to another corresponding one of the shorting bars.

### Claim 6

A method of manufacturing an antistatic display panel, comprising:
S10, providing a thin film transistor (TFT) array substrate, wherein the TFT array substrate comprises a display area, and a flexible circuit board is bound along a first direction D1 near a lower edge of the display area, and the flexible circuit board is fixed with a driving chip;
S20, providing an electrostatic discharge circuit, wherein a plurality of pins of the driving chip are electrically connected to the electrostatic discharge circuit, the pins and the electrostatic discharge circuit form a closed loop, and the electrostatic discharge circuit comprises two or more shorting bars and metal wires, the shorting bars are disposed perpendicular to the first direction D1, and every two adjacent shorting bars are provided with equal distance;
S30, providing a cutting line enclosing a rectangular frame on the TFT array substrate, wherein the cutting line passes through the electrostatic discharge circuit along the first direction D1, and the TFT array substrate is cut along the cutting line using a cutter, and the electrostatic discharge circuit is disconnected to obtain the antistatic display panel.

### Claim 7 (depends on 6)

The method of manufacturing the antistatic display panel as claimed in claim 6, wherein a first end of each of the shorting bars is electrically connected to a corresponding one of the pins, and a second end of each of the shorting bars is electrically connected to the metal wires.

### Claim 8 (depends on 6)

The method of manufacturing the antistatic display panel as claimed in claim 6, wherein in the S30, the cutting line comprises a first sub-cut line, a second sub-cut line, a third sub-cut line, and a fourth a sub-cut line, the first sub-cut line and the third sub-cut line are arranged in parallel along the first direction D1, and the second sub-cut line and the fourth sub-cut line are arranged in parallel along a direction perpendicular to the first direction D1.

### Claim 9 (depends on 8)

The method of manufacturing the antistatic display panel as claimed in claim 8, wherein the third sub-cut line passes through the shorting bars.

### Claim 10

A method of manufacturing the antistatic display panel, comprising:
S10, providing a TFT array substrate, the TFT array substrate comprises a display area, and a flexible circuit board is bound along a first direction D1 near a lower edge of the display area, and the flexible circuit board is fixed with a driving chip;
S20, providing an electrostatic discharge circuit, wherein a plurality of pins of the driving chip are electrically connected to the electrostatic discharge circuit, the pins and the electrostatic discharge circuit form a closed loop;
S30, providing a cutting line enclosing a rectangular frame on the TFT array substrate, wherein the cutting line passes through the electrostatic discharge circuit along the first direction D1, and the TFT array substrate is cut along the cutting line using a cutter, and the electrostatic discharge circuit is disconnected to obtain the antistatic display panel.

### Claim 11 (depends on 10)

The method of manufacturing the antistatic display panel as claimed in claim 10, wherein in the S30, the cutting line comprises a first sub-cut line, a second sub-cut line, a third sub-cut line, and a fourth a sub-cut line, the first sub-cut line and the third sub-cut line are arranged in parallel along the first direction D1, and the second sub-cut line and the fourth sub-cut line are arranged in parallel along a direction perpendicular to the first direction D1.

### Claim 12 (depends on 10)

The method of manufacturing the antistatic display panel as claimed in claim 10, wherein the third sub-cut line passes through the shorting bars.
