Reflective type color liquid crystal device and an electronic apparatus using this

• US 20070200982A1
• Filed: 04/25/2007
• Published: 08/30/2007
• Est. Priority Date: 07/17/1995
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Maeda, Tsuyoshi, Matsushima, Toshiharu, Okumura, Osamu, Okamoto, Eiji
• Granted Patent: US 7,834,958 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/22 Absorbing filters G02B5/201 - G02B5/208 take precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G02F 2203/02 reflective
• CPC Class Codes: G02F 2203/66 Normally white display, i.e. the off state being white

Abstract

A liquid crystal device includes a pair of substrates and a liquid crystal layer between the pair of substrates. In addition, the device includes a plurality of dots capable of independently applying voltage to the liquid crystal layer, each dot having a dot area that includes a first section and a second section. A color filter is arranged in the first section of at least one of the dots. A substantially transparent area is arranged in the at least one of the dots in the second section where the color filter is not arranged.

Claims

1. A color liquid crystal device comprising:

a pair of opposing substrates;

a liquid crystal layer between the pair of opposing substrates;

a plurality of dots capable of independently applying voltage to the liquid crystal layer, each dot having a dot area that includes a first section and a second section;

a color filter arranged in the first section of at least one of the dots; and

a substantially transparent area arranged in the at least one of the dots in the second section where the color filter is not arranged.

2. The color liquid crystal device according to claim 1, the substantially transparent area being a layer including acryl.

3. The color liquid crystal device according to claim 1, the substantially transparent area being a layer including polyimide.

4. The color liquid crystal device according to claim 1, the substantially transparent area extending across an area between adjacent dots.

5. The color liquid crystal device according to claim 1, the substantially transparent area extending from one side of the at least one of the dots to the other side of the one of the dots.

6. The color liquid crystal device according to claim 1, the plurality of dots comprising a display face, the color filter including a plurality of color filters in a one-to-one correspondence with the dots, a surface area ratio of all the color filters to the entire display face being 15% or more.

7. The color liquid crystal device according to claim 6, the surface area ratio of all the color filters to the entire display face being 25% or more.

8. The color liquid crystal device according to claim 6, the surface area ratio of all the color filters to the entire display face being 45% or more.