# US 12,111,551 B2 · Display device

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- Number: US 12,111,551 B2
- Document ID: US12111551B2
- Status: Granted
- Kind: B2
- Application number: 18/460,686
- Filed: 2023-09-05
- Published: 2024-03-07
- Granted: 2024-10-08
- Earliest claimed: 2022-09-06
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Kentaro Kawai
- Web page: https://patentgrep.com/patent/US12111551B2

## CPC

- G02F 1/13629: {Multilayer wirings}
- G02F 1/136209: {Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element}
- G02F 1/133302: {Rigid substrates, e.g. inorganic substrates}
- G02F 1/1334: based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
- G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side}
- G02F 1/1345: Conductors connecting electrodes to cell terminals
- G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)}
- G02F 1/13456: {Cell terminals located on one side of the display only}
- 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 display device includes an array substrate including a display region arranged with pixels and a peripheral region outside the display region, a counter substrate facing the array substrate, and a liquid crystal layer between the array substrate and the counter substrate. The display region includes a plurality of scanning signal lines extending in a first direction and arranged in a second direction intersecting the first direction, and a plurality of data signal lines extending in the second direction and arranged in the first direction. The peripheral region includes a first wiring pattern arranged with a plurality of first wirings connecting a scanning signal line driver circuit and the plurality of scanning signal lines, and a second wiring pattern arranged with a plurality of second wirings being supplied with a certain electric potential.

## Claims

### Claim 1

A display device, comprising:
an array substrate including a display region arranged with pixels and a peripheral region outside the display region;
a counter substrate including a light shielding layer and facing the array substrate; and
a liquid crystal layer between the array substrate and the counter substrate,
wherein the display region includes a plurality of scanning signal lines extending in a first direction and arranged in a second direction intersecting the first direction, and a plurality of data signal lines extending in the second direction and arranged in the first direction,
wherein the peripheral region includes a plurality of first wirings connecting a scanning signal line driver circuit and the plurality of scanning signal lines, and a plurality of second wirings being supplied with a certain electric potential,
wherein each of the plurality of first wirings is arranged in parallel and extends in a diagonal direction intersecting both the first direction and the second direction,
wherein each of the plurality of second wirings is arranged in parallel and extends in the diagonal direction intersecting both the first direction and the second direction, and in the same direction as the plurality of first wirings,
wherein the light shielding layer has a grid pattern overlapping the plurality of data signal lines and the plurality of scanning signal lines in the display region and a stripe pattern overlapping the plurality of first wirings and the plurality of second wirings in the peripheral region, and
wherein the plurality of first wirings, the plurality of second wirings and the stripe pattern of the light shielding layer extend in the same direction.

### Claim 2 (depends on 1)

The display device according to claim 1, wherein the grid pattern and the stripe pattern of the light shielding layer are connected.

### Claim 3 (depends on 2)

The display device according to claim 2, wherein:
the pixel includes a pixel electrode and a transistor connected to the pixel electrode;
the array substrate includes a planarization layer extending over the display region and the peripheral region;
the pixel is arranged in a region where the planarization layer is removed; and
the plurality of first wirings and the plurality of second wirings are embedded in the planarization layer.

### Claim 4 (depends on 3)

The display device according to claim 3, wherein the planarization layer has a stripe pattern that is removed in the peripheral region outside of the plurality of first wirings and the plurality of second wirings, and
wherein the stripe pattern is overlapped with the plurality of first wirings and the plurality of second wirings.

### Claim 5 (depends on 1)

The display device according to claim 1, wherein the plurality of first wirings and the plurality of second wirings include a first conductive layer and a second conductive layer overlapping the first conductive layer across an insulating layer.

### Claim 6 (depends on 1)

The display device according to claim 1, wherein the light shielding layer has a grid pattern in the region overlapping the display region, and the grid pattern extends into the peripheral region.

### Claim 7 (depends on 1)

The display device according to claim 1, wherein the plurality of first wirings are arranged to be evenly spaced, and the plurality of second wirings are arranged to be evenly spaced.

### Claim 8 (depends on 1)

The display device according to claim 1, further comprising a light source arranged along the first direction and emitting light in the second direction toward a side surface of the counter substrate.

### Claim 9 (depends on 1)

The display device according to claim 1, wherein the liquid crystal layer is a polymer-dispersed liquid crystal.