# US 2014/0152908 A1 · Electro-optical device and electronic apparatus

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- Number: US 2014/0152908 A1
- Document ID: US20140152908A1
- Status: Published application
- Kind: A1
- Application number: 14/081,582
- Filed: 2013-11-15
- Published: 2014-06-05
- Earliest claimed: 2012-12-03
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Toru Nimura
- Web page: https://patentgrep.com/patent/US20140152908A1

## CPC

- G02F 1/133611: {including means for improving the brightness uniformity}
- G02B 3/0056: {arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085)}
- G02F 1/133526: {Lenses, e.g. microlenses or Fresnel lenses}
- H04N 9/3197: {using light modulating optical valves}
- 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
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A microlens array substrate is provided on which a plurality of microlenses is arranged, and the collection efficiency of a first microlens is lower than the collection efficiency of a second microlens positioned further to the outside edge sides than the first microlens.

## Claims

### Claim 1

An electro-optical device comprising:
a pair of substrates;
a first microlens; and
a second microlens positioned further to the outside edge side of the one substrate than the first microlens in a display region of at least one substrate of the pair of substrates,
wherein the collection efficiency of the first microlens is lower than the collection efficiency of the second microlens.

### Claim 2 (depends on 1)

The electro-optical device according to claim 1, wherein the curvature of the first microlens is smaller than the curvature of the second microlens.

### Claim 3 (depends on 1)

The electro-optical device according to claim 1, wherein the diameter of the first microlens is smaller than the diameter of the second microlens.

### Claim 4 (depends on 1)

The electro-optical device according to claim 1, wherein the inclination angle of with respect to one face of a peripheral edge portion of the first microlens is smaller than the inclination angle with respect to the one face of the peripheral edge portion of the second microlens.

### Claim 5 (depends on 1)

The electro-optical device according to claim 1 further comprising a liquid crystal layer interposed between the pair of substrates.

### Claim 6 (depends on 1)

The electro-optical device according to claim 1, further comprising a third microlens arranged corresponding to a non-display region surrounding the display region,
wherein the shape of the third microlens is the same as the shape of the second microlens.

### Claim 7 (depends on 1)

The electro-optical device according to claim 1, wherein microlenses having the same collection efficiency as one another are arranged on the other substrate of the pair of substrates.

### Claim 8 (depends on 1)

The electro-optical device according to claim 1, wherein microlenses having the same collection efficiency as one another are arranged on one substrate of the pair of substrates.

### Claim 9 (depends on 1)

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