LIQUID CRYSTAL PANEL AND LIQUID CRYSTAL DISPLAY DEVICE

• US 20080291371A1
• Filed: 02/20/2008
• Published: 11/27/2008
• Est. Priority Date: 02/22/2007
• Status: Abandoned Application

• Current Assignee: Infovision Optoelectronics Company Limited (Digital China Information Service Co., Ltd.)
• Original Assignee: Infovision Optoelectronics Company Limited (Digital China Information Service Co., Ltd.)
• Inventors: Sato, Hiroki
• Application Number:
  US12/034,054
• Publication Number:
  US 20080291371A1
• Time in Patent Office: Days
• US Class Current: 349/96
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/133773 the alignment material or treatment being different for the two opposite substrates

Abstract

The object of the present invention is to provide a liquid crystal display device having high contrast and excellent viewing angle characteristic which can be manufactured without employing the phase compensation film and with low cost. The technical solution is to form a liquid crystal panel of an active matrix type liquid crystal display device having the following structure, that is, each of the pixels of said liquid crystal panel comprises liquid crystal layer, and said liquid crystal layer comprises a first orientation region in a first liquid crystal orientation direction and a second orientation region in a second liquid crystal orientation direction, furthermore, the difference between said first liquid crystal orientation direction and said second liquid crystal orientation direction is about 180 degrees, and the transmission axes of two polarizers, between which said liquid crystal layer is sandwiched, are perpendicular with each other, furthermore, angles of about 45 degrees are formed by the transmission axes of the two polarizers together with said first and second orientation directions.

Claims

1. A liquid crystal panel for an active matrix type liquid crystal display device, wherein the following structure is formed, that is,

each of the pixels of said liquid crystal panel comprises a liquid crystal layer, wherein said liquid crystal layer comprises a first orientation region in a first liquid crystal orientation direction and a second orientation region in a second liquid crystal orientation direction,

the difference between said first liquid crystal orientation direction and said second liquid crystal orientation direction is about 180 degrees,

the transmission axes of two polarizers, between which said liquid crystal layer is sandwiched, are perpendicular with each other, and angles of about 45 degrees are formed by the transmission axes of the polarizers together with said first orientation direction and said second orientation direction.

2. The liquid crystal panel of an active matrix type liquid crystal display device as claimed in claim 1, wherein said liquid crystal layer is in a twisted nematic liquid crystal mode.

3. An active matrix type liquid crystal display device, wherein the active matrix type liquid crystal display device comprises the liquid crystal panel as claimed in claim 1.

4. The active matrix type liquid crystal display device as claimed in claim 3, wherein said liquid crystal layer is in a twisted nematic liquid crystal mode.