Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIQUID CRYSTAL DISPLAY DEVICE AND COLOR FILTER FOR LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2003140133
Kind Code:
A
Abstract:

To provide a liquid crystal display device in which utilization efficiency of a backlight is increased by contriving the constitution of a cholesteric liquid crystal filter and by which bright display can be performed.

In the liquid crystal display device containing a liquid crystal display element wherein a liquid crystal layer 3 is interposed between transparent substrates 1 and 2 and voltage applying electrodes and driving circuits are provided, an illumination light source 10, an illumination side circularly polarizing means 8 and an observer side circularly polarizing plate 9, a semitransmission type cholesteric liquid crystal color filter 4 for reflecting a portion of light of a wavelength region of each R, G and B, transmitting the rest of the light and reflecting light of wavelength regions of other colors in R, G and B for pixels of R, G and B and an absorption type color filter 5 for transmitting the light of a wavelength region of each R, G and B and for absorbing the light of wavelength regions of other colors are disposed in a row on the illumination light incident side of the liquid crystal layer 3 and on the observer side thereof, respectively.


Inventors:
ITO NORITO
ISHIZAKI GOJI
SEKINE KEIKO
Application Number:
JP2001000340601
Publication Date:
May 14, 2003
Filing Date:
November 06, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
G02B5/20; G02F1/1335; G02F1/13357; (IPC1-7): G02F1/1335; G02B5/20; G02F1/13357
Attorney, Agent or Firm:
韮澤 弘 (外7名)