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Patent Searching and Data


Title:
LIQUID CRYSTAL DISPLAY DEVICE AND INFORMATION TRANSMISSION EQUIPMENT EQUIPPED WITH THE SAME
Document Type and Number:
Japanese Patent JPH07225375
Kind Code:
A
Abstract:

PURPOSE: To lower the contrast and prevent the image quality from deteriorating owing to the sticking of dust by arranging polarizing plates at proper positions.

CONSTITUTION: A spacer 7 is arranged between two substrates 5 and 6 and liquid crystal 9 is charged in the gap to constitute a liquid crystal panel P. The reverse-side polarizing plate 2 is arranged on the reverse surface of this liquid crystal panel P and a back light device is placed behind it. A magnifying lens R is arranged in front of the liquid crystal panel P across the top-side polarizing plate 3. The lens R is arranged while put in focus on the liquid crystal panel P, and the polarizing plates 2 and 3 are arranged at positions off the focus of the lens R. Consequently, deflection abnormality due to dust or a flaw on a polarizing plate is not recognized to prevent the image quality from deteriorating. Further, the top-side polarizing plate 3 is arranged nearby the lens R, so the area of a display plate 3 required to cover the display part of the liquid crystal panel P may be small.


Inventors:
KOMIYAMA KATSUMI
Application Number:
JP3775094A
Publication Date:
August 22, 1995
Filing Date:
February 10, 1994
Export Citation:
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Assignee:
CANON KK
International Classes:
G02F1/1335; (IPC1-7): G02F1/1335; G02F1/1335
Attorney, Agent or Firm:
Kazuo Chikajima