Title:
液晶表示装置
Document Type and Number:
Japanese Patent JP4307582
Kind Code:
B2
Abstract:
A pixel electrode for driving liquid crystal is formed on a planarization insulator film covering a thin film transistor, and a vertical alignment film is formed on the pixel electrode without rubbing treatment. A direction control window that is electrode-free portion is formed in a common electrode, and a vertical alignment film is formed on the common electrode without rubbing treatment. The liquid crystal having negative dielectric constant anisotropy is controlled in an initial alignment of the substantially normal direction without pretilt. Upon applying a voltage, the tilt of the alignment is controlled in the direction of a slanting electric field at the edge of the pixel electrode and the edge of the direction control window so that a pixel division can be performed. A black matrix between pixels is eliminated and a light shielding film is formed only in the region corresponding to the thin film transistors so that light leakage is prevented.
Inventors:
Tokuo Booth
Application Number:
JP31717197A
Publication Date:
August 05, 2009
Filing Date:
November 18, 1997
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G02F1/1337; G02F1/136; G02F1/1368; G02F1/139; G09F9/35; H01L21/336; H01L29/786; G02F1/1333; G02F1/1335
Domestic Patent References:
| JP7199190A | ||||
| JP7028063A | ||||
| JP9236821A | ||||
| JP8313933A | ||||
| JP7064089A | ||||
| JP7311383A | ||||
| JP7013164A | ||||
| JP8101399A | ||||
| JP8313915A | ||||
| JP9061825A | ||||
| JP7225389A |
Attorney, Agent or Firm:
Hiroshi Kakutani