Liquid crystal display

• US 7,542,116 B2
• Filed: 03/19/2008
• Issued: 06/02/2009
• Est. Priority Date: 12/26/1997
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Okamoto, Masayuki, Mitsui, Seiichi, Hiraki, Hajime
• Primary Examiner(s): Nguyen; Dung
• Assistant Examiner(s): DUONG, TAI V
• Application Number:
  US12/051,776
• Publication Number:
  US 20080170186A1
• Time in Patent Office: 440 Days
• Field of Search: 349/106, 349/109, 349/113, 349/114, 345/88, 359/891
• US Class Current: 349/114
• CPC Class Codes: G02F 1/133371 Cells with varying thickness of the liquid crystal layer
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 1/133638 Waveplates, i.e. plates with a retardation value of lambda/n
• CPC Class Codes: G02F 1/133753 with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
• CPC Class Codes: G02F 2202/04 dye

Abstract

A liquid crystal display is furnished with: a liquid crystal display element having a pair of substrates, to which alignment members are provided to their respective opposing surfaces, and a liquid crystal layer sandwiched by the pair of substrates; an alignment mechanism for providing at least two different director configurations simultaneously on different arbitrary regions used for display in the liquid crystal layer; and a reflection film provided to at least one of the different arbitrary regions showing different director configurations; wherein the different arbitrary regions showing different director configurations are used for a reflection display section for showing reflection display and a transmission display section for showing transmission display, respectively. Examples of the alignment mechanism include an alignment film to which the alignment treatment is applied in different orientations in the reflection display section and transmission display section, respectively, an insulation film having different film thicknesses in the reflection display section and transmission display section, and so forth.

Claims

1. A liquid crystal display device comprising:

a pair of substrates and a liquid crystal layer interposed

between said substrates, said device including a plurality of pixels;

at least some of said pixels each including a light reflecting

display section and a light transmitting display section;

wherein each said light transmitting display section is provided with a color filter, and at least one said light reflecting display section is partially provided with a color filter,

wherein each said light reflecting display section in a first pixel and a second pixel of said plurality of pixels has a portion that does not show color display, and areas of said portions are different between said first pixel and said second pixel.

2. The liquid crystal display device of claim 1, wherein

said areas of said portions that do not show color display vary depending upon colors of said pixels.

3. A liquid crystal display device comprising:

a pair of substrates and a liquid crystal layer interposed between said substrates, said device including a plurality of pixels;

at least some of said pixels each including a light reflecting display section and a light transmitting display section;

wherein each said light transmitting display section is provided with a color filter, and at least one of said light reflecting display section is partially provided with a color filter,

wherein a blue color filter is the color filter having the largest area at in the light reflecting display sections.

4. A liquid crystal display device comprising:

a pair of substrates and a liquid crystal layer interposed between said substrates, said device including a plurality of pixels;

at least some of said pixels each including a light reflecting display section and a light transmitting display section;

wherein each said light transmitting display section is provided with a color filter, and at least some of said light reflecting display sections is are partially provided with a color filter,

wherein a green color filter is the color filter having the smallest area at in the light reflecting display sections.

5. The liquid crystal display device of claim 4, wherein a blue color filter is the color filter having the largest area in the light reflecting display sections.