Title:
【発明の名称】液晶表示装置
Document Type and Number:
Japanese Patent JP2883430
Kind Code:
B2
Abstract:
PURPOSE:To increase the utilization efficiency of light and to improve the brightness of a display image by converging the light from a light source through convex lenses in picture element units and guiding the light to the respective picture elements of a liquid crystal panel. CONSTITUTION:On at least one surface of each picture element of the liquid crystal panel P, a convex lens 5 which is larger than the area of each picture element is provided, and the light from the light source L is converted by the lens 5 and guided to each picture element of the liquid crystal panel P. further, the convex lens 5 uses a convex lens in an aspherical and asymmetrical sectional shape so as to have focus in a direction along the high-contrast axis direction of the liquid crystal panel. Consequently, the high-contrast axis direction is set apparently perpendicular to the liquid crystal panel P and the utilization efficiency of the light is greatly improved.
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Inventors:
OKITA JUJI
Application Number:
JP25769490A
Publication Date:
April 19, 1999
Filing Date:
September 26, 1990
Export Citation:
Assignee:
SANYO DENKI KK
International Classes:
G02F1/1335; G03B21/00; (IPC1-7): G02F1/1335
Domestic Patent References:
| JP57157215A |
Attorney, Agent or Firm:
Koji Yasutomi (1 person outside)