FFS mode liquid crystal display device and method of fabricating the same

• US 7,667,809 B2
• Filed: 12/28/2006
• Issued: 02/23/2010
• Est. Priority Date: 12/28/2005
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Yuichi, Mornoi, Kazuyoshi, Nagayama
• Primary Examiner(s): Nelms; David
• Assistant Examiner(s): Nguyen; Hoan C
• Application Number:
  US11/647,535
• Publication Number:
  US 20070165174A1
• Time in Patent Office: 1,153 Days
• Field of Search: 349/141, 349/142, 349/144, 349/129
• US Class Current: 349/144
• 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 1/134309 characterised by their geometrical arrangement

Abstract

A liquid crystal display device and method of fabricating the device where the device can control a viewing angle in all directions without forming a white pixel. The liquid crystal display device includes a display control region that is controlled such that liquid crystal molecules are inclined and a viewing-angle control region that is controlled such that liquid crystal molecules are aligned in a horizontal or vertical direction, where a control voltage is supplied through a viewing angle control line independent of a common line for the display control region.

Claims

1. A FFS mode liquid crystal display device comprising:

a display control region that is controlled such that liquid crystal molecules are inclined;

a viewing-angle control region that is controlled such that liquid crystal molecules are aligned in a horizontal or vertical direction, wherein a control voltage is supplied through a viewing angle control line that is independent of a common line for the display control region;

a common electrodes on the display control region and the viewing-angle control region, the common electrodes having a plate shape; and

a pixel electrode for the display control region including first pixel holes having a chevron shape “

<

” and

a pixel electrode for the viewing-angle control region including second pixel holes having a linear shape,

wherein the pixel electrode for the display control region and the pixel electrode for the viewing-angle control region are independently applied voltage.

2. The device according to claim 1, wherein free of color layer is on a substrate opposite to the viewing-angle control region.

3. The device according to claim 1, wherein the liquid crystal molecules comprise n-type liquid crystal molecules.

4. The device according to claim 1, wherein the first pixel holes are arranged at a predetermined interval in a horizontal or vertical direction, and the second pixel holes are arranged at a predetermined interval in a direction different from that of the first pixel holes.