# US 11,906,831 B2 · Electro-optical device and electronic apparatus

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,906,831 B2
- Document ID: US11906831B2
- Status: Granted
- Kind: B2
- Application number: 17/873,155
- Filed: 2022-07-26
- Published: 2023-02-02
- Granted: 2024-02-20
- Earliest claimed: 2021-07-27
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Suguru Uchiyama; Kazunari Sakamoto; Yasuhiro Takeuchi
- Web page: https://patentgrep.com/patent/US11906831B2

## CPC

- G02F 1/13332: {Front frames}
- G02F 1/133331: {Cover glasses}
- G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels}
- G03B 21/006: {using LCD's}
- G02F 2201/54: Arrangements for reducing warping-twist
- G02F 2202/28: Adhesive 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
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

An electro-optical device includes a first substrate, a second substrate bonded to the first substrate, a liquid crystal layer provided between the first substrate and the second substrate, a third substrate provided on an opposite side of the first substrate from the liquid crystal layer, and a frame configured to house the first substrate, the second substrate, and the third substrate. The frame includes a facing surface facing, via an adhesive layer, a first surface on an opposite side of the third substrate from the liquid crystal layer. The third substrate is larger than the first substrate. The frame and only the third substrate among the first substrate, the second substrate, and the third substrate are bonded to each other.

## Claims

### Claim 1

An electro-optical device, comprising:
a first substrate;
a second substrate bonded to the first substrate;
a liquid crystal layer provided between the first substrate and the second substrate;
a third substrate provided on an opposite side of the first substrate from the liquid crystal layer; and
a frame configured to house the first substrate, the second substrate, and the third substrate, wherein
the frame includes a facing surface facing a first surface of the third substrate, the first surface being located on a side of the third substrate that is opposite to the liquid crystal layer,
the third substrate is larger than the first substrate, and
among the first substrate, the second substrate and the third substrate, the frame is only bonded to the third substrate via an adhesive layer, wherein the adhesive layer is disposed between the first surface of the third substrate and the facing surface of the frame and between a side surface of the third substrate and an inner side wall of the frame.

### Claim 2

An electro-optical device, comprising:
a first substrate;
a second substrate bonded to the first substrate;
a liquid crystal layer provided between the first substrate and the second substrate;
a third substrate provided on an opposite side of the first substrate from the liquid crystal layer; and
a frame configured to house the first substrate, the second substrate, and the third substrate, wherein
the frame includes an abutment surface directly contacting and abutting on a second surface of the third substrate that faces toward the liquid crystal layer,
the third substrate is larger than the first substrate, and
the third substrate and the frame are bonded to each other via an adhesive layer disposed between a side surface of the third substrate and an inner wall of the frame.

### Claim 3

An electro-optical device, comprising:
a first substrate;
a second substrate bonded to the first substrate;
a liquid crystal layer provided between the first substrate and the second substrate;
a third substrate provided at a third surface of the first substrate, the third surface being located on a side of the first substrate that is opposite to the liquid crystal layer; and
a frame configured to house the first substrate, the second substrate and the third substrate, wherein
the frame includes an abutment surface directly contacting and abutting on the third surface,
the abutment surface is located between a side surface of the third substrate and a side surface of the first substrate,
the third substrate is smaller than the first substrate, and
side surfaces of the first substrate and the second substrate and an inner wall of the frame are bonded to each other via an adhesive, and a side surface of the third substrate and the first substrate are not joined by the adhesive.

### Claim 4 (depends on 3)

The electro-optical device according to claim 3, wherein
the frame includes a protruding portion that protrudes from the inner wall of the frame toward the third substrate, and
the protruding portion includes the abutment surface.

### Claim 5 (depends on 4)

The electro-optical device according to claim 4, wherein
the protruding portion includes a recessed portion between the abutment surface and the inner wall of the frame.

### Claim 6 (depends on 3)

The electro-optical device according to claim 3, wherein
the frame includes an injection port through which the adhesive is injected, and
the injection port is provided closer to the second substrate than the abutment surface.

### Claim 7 (depends on 1)

An electronic apparatus, comprising:
the electro-optical device according to claim 1.