Liquid crystal display

• US 8,059,235 B2
• Filed: 02/02/2009
• Issued: 11/15/2011
• Est. Priority Date: 12/26/2003
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated)
• Inventors: Sugibayashi, Makiko, Maehara, Mutsumi, Kondo, Katsumi, Utsumi, Yuka, Hiyama, Ikuo
• Primary Examiner(s): NGUYEN, THANH NHAN P
• Application Number:
  US12/363,851
• Publication Number:
  US 20090141220A1
• Time in Patent Office: 1,016 Days
• Field of Search: None
• US Class Current: 349/106
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133707 Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/1393 the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells G02F1/1396, G02F1/141 take precedence
• CPC Class Codes: G02F 2203/04 wavelength independent

Abstract

A liquid crystal display includes a pair of substrates having a polarizer, a liquid crystal layer sandwiched between the substrates of the pair, a color filter layer sandwiched between one of the substrates of the pair and the liquid crystal layer, a light source for supplying light to the pair of substrates, the liquid crystal layer, and the color filter layer. The color filter layer includes three filters for displaying blue, green and red. Only the green filter of the three filters selectively includes an absorbing component capable of absorbing a light spectrum within a wavelength range from 480 nm to 500 nm.

Claims

1. A liquid crystal display, comprising:

a pair of substrates including a polarizer;

a liquid crystal layer sandwiched between the substrates of the pair;

a color filter layer sandwiched between one of the substrates of the pair and the liquid crystal layer; and

a light source for supplying light to the pair of substrates, the liquid crystal layer, and the color filter layer wherein;

the color filter layer includes three filters for displaying blue, green and red; and

only the green filter of the three filters selectively includes an absorbing component capable of absorbing a light spectrum within a wavelength range from 480 nm to 500 nm.

2. The liquid crystal display according to claim 1, wherein the one of the substrates of the pair sandwiching the color filter layer with the liquid crystal layer comprises the one of the substrates of the pair which is arranged furthest from the light source.

3. A liquid crystal display, comprising:

a pair of substrates including a polarizer;

a liquid crystal layer sandwiched between the substrates of the pair;

a color filter layer sandwiched between one of the substrates of the pair and the liquid crystal layer; and

a light source for supplying light to the pair of substrates, the liquid crystal layer, and the color filter layer wherein;

the color filter layer includes three filters for displaying blue, green, and red;

a spectrum absorbing layer is selectively arranged in one of an upper section and a lower section of only the green filter; and

the spectrum absorbing layer absorbs a light spectrum within a wavelength range from 480 nm to 500 nm.

4. The liquid crystal display according to claim 3, wherein the one of the substrates of the pair sandwiching the color filter layer with the liquid crystal layer comprises the one of the substrates of the pair which is arranged furthest from the light source.