# US 2014/0197553 A1 · Method for manufacturing a substrate for a display device

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- Number: US 2014/0197553 A1
- Document ID: US20140197553A1
- Status: Published application
- Kind: A1
- Application number: 14/202,676
- Filed: 2014-03-10
- Published: 2014-07-17
- Earliest claimed: 2011-10-07
- Assignees: LG Display Co., Ltd.
- Applicants: LG Display Co., Ltd.
- Inventors: Youn-Oh Kim; JongChun Lim; JaeHyun You
- Web page: https://patentgrep.com/patent/US20140197553A1

## CPC

- H10W 46/00: Marks applied to devices, e.g. for alignment or identification
- H10D 86/021: {of multiple TFTs}
- G02F 1/13625: {Patterning using multi-mask exposure}
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- 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 method for manufacturing a substrate for a display device comprises forming a first pattern within an active region of the substrate and at the same time forming a first overlay pattern at corner regions of the active region; and forming a second pattern within the active region of the substrate and at the same time forming a second overlay pattern at corner regions of the active region, wherein the first overlay pattern includes gradations arranged in a predetermined direction, and the second overlay pattern includes gradations arranged in the predetermined direction to face the gradations of the first overlay pattern.

## Claims

### Claim 1

A substrate for a display device, the substrate comprising:
a first pattern and a second pattern disposed within an active region of the substrate;
a first overlay pattern disposed at corner regions of the active region and made of the same material as that of the first pattern; and
a second overlay pattern disposed at corner regions of the active region and made of the same material as that of the second pattern,
wherein the first overlay pattern includes gradations arranged in a predetermined direction, and the second overlay pattern includes gradations arranged in the predetermined direction to face the gradations of the first overlay pattern.

### Claim 2 (depends on 1)

The substrate of claim 1, wherein the first overlay pattern includes a first sub pattern having gradations arranged in a first direction and a second sub pattern having gradations arranged in a second direction different from the first direction,
wherein the second overlay pattern includes a third sub pattern having gradations arranged in the first direction and a fourth sub pattern having gradations arranged in the second direction, and
wherein the first sub pattern and the third sub pattern symmetrically face each other, and the second sub pattern and the fourth sub pattern symmetrically face each other.

### Claim 3 (depends on 1)

The substrate of claim 1, wherein the first overlay pattern includes at least one of numbering of the gradations, signs of the numbering and a title representing the first pattern, and
wherein the second overlay pattern includes at least one of numbering of the gradations, signs of the numbering and a title representing the second pattern.

### Claim 4 (depends on 1)

The substrate of claim 1, wherein a plurality of the first overlay patterns are disposed at one corner region within the active region.