Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPH0777690
Kind Code:
A
Abstract:

PURPOSE: To obtain the liquid crystal display device which has no interference fringe and is bright and high in display quality by combining a light diffusion sheet laminated on plural lens plates which are laminated on a light-transmissive flat plate and arranged so that lens ridge lines cross one another.

CONSTITUTION: The light-transmissive flat plate 21, the lens plates 22 which are laminated on the flat plate 21 and arranged so that the lens ridge lines cross one another, and the light diffusion plate 23 laminated on the lens plates 22 are used as a light guide diffusing means 2 which is arranged on the back of a liquid crystal panel 1. The light guide diffusing means 2 for the liquid crystal panel 1 which has plural electrodes arranged in parallel is constituted by forming striped lenses so that the pitch of the lens ridge lines of the lens plates 22 is narrower than the pitch of the electrodes of the liquid crystal panel 1 and laminating the light diffusion sheet 23 on the lens plates 22. Consequently, even when the flat plate 21 is made thin, light is spread almost equally and made uniform in luminance by the diffusion sheet 23 before it reaches the liquid crystal panel 1, so neither interference nor a large decrease in luminance is caused.


Inventors:
NISHIO TOSHIYA
Application Number:
JP1993000225809
Publication Date:
March 20, 1995
Filing Date:
September 10, 1993
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SANYO ELECTRIC CO
TOKYO SANYO ELECTRIC CO
International Classes:
F21V8/00; G02B6/00; G02F1/1335; G02F1/13357; (IPC1-7): G02F1/1335; F21V8/00; G02B6/00
Attorney, Agent or Firm:
安富 耕二 (外1名)