# US 10,310,309 B2 · Display device

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- Number: US 10,310,309 B2
- Document ID: US10310309B2
- Status: Granted
- Kind: B2
- Application number: 14/815,409
- Filed: 2015-07-31
- Published: 2016-02-11
- Granted: 2019-06-04
- Earliest claimed: 2014-08-08
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Koichi Igeta; Hirotaka Imayama
- Web page: https://patentgrep.com/patent/US10310309B2

## CPC

- G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels}
- G02F 1/1339: Gaskets; Spacers; Sealing of cells
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/133311: {Environmental protection, e.g. against dust or humidity}
- G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)}
- G02F 1/13398: {Spacer materials; Spacer properties}
- 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

To improve the display quality of a display device, the display device includes a display section and a frame section surrounding a periphery of the display section. A substrate in the display device includes a conductor pattern constituting a circuit section and an insulating film serving as an organic film covering the conductor pattern. The insulating film extends to a peripheral edge of the substrate. A slit, which penetrates the insulating film in a thickness direction, is formed in a corner part of the insulating film. The slit is formed at a position not overlapping the circuit section.

## Claims

### Claim 1

A display device including a display section having a rectangular shape and a frame section surrounding a periphery of the display section, the display device comprising:
a first substrate having a first surface;
a second substrate having a second surface opposing the first surface of the first substrate; and
a display functional layer arranged in the display section between the first substrate and the second substrate,
wherein the frame section has four side portions along each straight side of the display section, and corner portions between successive side portions,
the second substrate includes a conductor pattern, and a first organic film covering the conductor pattern,
the first organic film extends to a peripheral edge of the second substrate on the frame section,
a plurality of first slits that penetrate the first organic film in a thickness direction are formed in each of the corner portions,
the plurality of first slits are not formed in the side portions, and
both ends of each of the plurality of first slits extend to peripheral edges of the first organic film in the corner portions.

### Claim 2 (depends on 1)

The display device according to claim 1,
wherein the plurality of first slits are formed in an arc around a corner of the display section.

### Claim 3 (depends on 1)

The display device according to claim 1,
wherein the plurality of first slits connect to each other at the corner portion.