Liquid crystal display having wide viewing angle

• US 20050062923A1
• Filed: 08/02/2004
• Published: 03/24/2005
• Est. Priority Date: 05/29/1997
• Status: Active Grant

• Current Assignee: TCL China Star Optoelectronics Technology Co. Ltd. (TCL Technology Group Corp.)
• Original Assignee: Hea-Ri Lee, Jae-Jin Lyu, Jian-Min Chen, Kyeong-Hyeon Kim
• Inventors: Lyu, Jae-Jin, Kim, Kyeong-Hyeon, Lee, Hea-Ri, Chen, Jian-Min
• Granted Patent: US 7,016,004 B2
• Time in Patent Office: Days
• US Class Current: 349/143
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• 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 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/134372 for fringe field switching [FFS] where the common electrode is not patterned
• CPC Class Codes: G02F 1/136213 Storage capacitors associated with the pixel electrode
• CPC Class Codes: G02F 1/137 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
• CPC Class Codes: G02F 1/13712 the liquid crystal having negative dielectric anisotropy
• 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 2201/121 common or background
• CPC Class Codes: G02F 2201/128 field shaping

Abstract

Apertures are formed in the common electrode or in the pixel electrode of a liquid crystal display to form a fringe field. Storage capacitor electrodes are formed at the position corresponding to the apertures to prevent the light leakage due to the disclination caused by the fringe field. The apertures extend horizontally vertically or obliquely. The apertures in adjacent pixel regions may have different directions to widen the viewing angle.

Claims

1-59. -59. (Canceled)

60. A liquid crystal display (LCD), comprising:

a first substrate;

a second substrate facing the first substrate;

a pixel region formed between the first substrate and the second substrate; and

a liquid crystal layer disposed between the first substrate and the second substrate and overlapping a common electrode and a storage capacitor,

wherein either the pixel electrode or the common electrode has an aperture and the storage capacitor is located at the aperture.