IP Library Granted Patent US 7,889,294
Granted Patent B2
US 7,889,294 · App. 11/351,180 · Granted Feb 15, 2011

Electro-optical device with transmissive and reflection display regions where the reflection display region has a scatter-reflection and mirror-reflection region

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Quick Facts
Patent No.
US 7,889,294
App. No.
11/351,180
Granted
Feb 15, 2011
Kind
B2
Abstract

An electro-optical device includes a pair of substrates that hold an electro-optical material therebetween and include a plurality of pixels each having a reflective display region and a transmissive display region; a reflective film that is provided in the reflective display region and has a flat surface in a portion of the reflective display region adjacent to the transmissive display region, the portion of the reflective display region serving as a first mirror-reflection region; and colored layers each of which is formed in only the first mirror-reflection region and the transmissive display region.

Claims (34)

1. An electro-optical device comprising:

a pair of substrates that hold an electro-optical material therebetween and include a pixel having a reflective display region and a transmissive display region;

a reflective film provided in the reflective display region, the reflective film having:

a first mirror-reflection region that has a flat surface in a portion of the reflective display region adjacent to the transmissive display region;

a scatter-reflection region that has an uneven surface other then where the flat surface is located; and

a colored layer disposed in the first mirror-reflection region and the transmissive display region in the pixel without overlapping the uneven surface of the scatter-reflection region,

wherein the reflective film provided in the first mirror-reflection region is formed of a different material from that forming the reflective film provided in the scatter-reflection region; and

the reflective film of the first mirror-reflection region consists of a metallic material and the reflective film of the scatter-reflection region consists of a metallic material different from that of the first mirror-reflection region.

2. The electro-optical device according to claim 1 , further comprising another pixel provided adjacent to the pixel;

wherein the reflective film has a second mirror-reflection region that has a flat surface, the second mirror-reflection region being located in the pixel near the transmissive display region of the other pixel.

3. The electro-optical device according to claim 1 , further comprising:

another pixel provided adjacent to the pixel; and

a first light shielding layer provided between the transmissive display region of the pixel and a reflective display region of the other pixel, the reflective display region of the other pixel being adjacent to the transmissive display region of the pixel.

4. The electro-optical device according to claim 3 , wherein the colored layer includes a plurality of colored layers having a plurality of colors, and

the first light shielding layer is formed by laminating the plurality of colored layers having different ones of the plurality of colors.

5. The electro-optical device according to claim 1 , wherein the reflective film is provided on one of the pair of substrates, and

a light shielding layer is provided in a region of the other substrate of the pair of substrates corresponding to the first mirror-reflection region.

6. The electro-optical device according to claim 1 , wherein a side of the first mirror-reflection region adjacent to the transmissive display region has a linear shape.

7. The electro-optical device according to claim 1 , wherein the reflective film is provided in an island shape in the pixel, or the transmissive display region is an aperture provided in the reflective film.

8. The electro-optical device according to claim 1 , wherein the first mirror-reflection region has a width of about 1 to 10 μm.

9. The electro-optical device according to claim 1 , further comprising:

an underlayer that has an uneven surface and is formed between one of the substrates and the reflective film in the scatter-reflection region.

10. Electro-optical device according to claim 1 , wherein an underlayer is provided between one of the substrates and the reflective film, and

the underlayer has a flat surface in the first mirror-reflection region and an uneven surface in the scatter-reflection region.

11. The electro-optical device according to claim 1 , wherein an underlayer having an uneven surface is provided between one of the substrates and the reflective film, and

a planarizing film for planarizing the uneven surface of the underlayer is formed in the first mirror-reflection region between the underlayer and the reflective film.

12. An electro-optical device comprising:

a pair of substrates that hold an electro-optical material therebetween and include a pixel having a reflective display region and a transmissive display region;

a reflective film provided in the reflective display region, the reflective film having:

a first mirror-reflection region that has a flat surface in a portion of the reflective display region adjacent to the transmissive display region;

a scatter-reflection region that has an uneven surface other than where the flat surface is located; and

a colored layer disposed in the first mirror-reflection region and the transmissive display region in the pixel without overlapping the uneven surface of the scatter-reflection region,

wherein the reflective film provided in the first mirror-reflection region consists of a first material and the scatter-reflection region consists of a second material, the first material being different from the second material; and

the reflective film of the first mirror-reflection region consists of a metallic material and the reflective film of the scatter-reflection region consists of a metallic material different from that of the first mirror-reflection region.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2016
From: SEIKO EPSON CORPORATION
To: BOE TECHNOLOGY (HK) LIMITED
Reel/Frame 037515/0050 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2016
From: BOE TECHNOLOGY (HK) LIMITED
To: BOE TECHNOLOGY GROUP CO., LTD.
Reel/Frame 037515/0082 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 9, 2006
From: KAMIJO, KIMITAKA; NAKANO, TOMOYUKI; TAKIZAWA, KEIJI; KATO, TATSUYA
To: SEIKO EPSON CORPORATION
Reel/Frame 017563/0071 →