Title:
LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/045515
Kind Code:
A1
Abstract:
A liquid crystal display device enabling an increase in displacement amount in a very small load range, capable of preventing the nonuniformity of gravity and low temperature foaming from occurring, having sufficient strength against local loads, and manufacturable to keep constant a gap between transparent substrates. The liquid crystal display device comprises at least the two sheets of transparent substrates, a liquid crystal layer sealed between these two sheets of transparent substrates, and columnar spacers formed between these two sheets of transparent substrates and keeping the clearance between these two sheets of transparent substrates at a specified one. The liquid crystal display device is characterized in that the displacement amount thereof in loads between 80 and 400 mN comes within the range of 0.1 to 0.8 μm, and the displacement amount thereof in loads between 600 and 950 mN comes within the range of 0.05 to 0.5 μm when the loads are applied to the effective display areas of these two sheets of transparent substrates in a direction that reduces the gap between these two sheets of transparent substrates by the following measurement method. (Measurement method) Under the temperature of 23ºC, an indenter having a flat surface of 2 mm in diameter is allowed to abut on any of the transparent substrates at a load of 2.22 mN/sec and the load is applied to the surfaces of the transparent substrates in the vertical direction, and the displacement amount thereof against the load is measured.
Inventors:
TAWARAYA SEIJI (JP)
HONDA TOMOHISA (JP)
SUMINO TOMONOBU (JP)
HONDA TOMOHISA (JP)
SUMINO TOMONOBU (JP)
Application Number:
PCT/JP2004/016427
Publication Date:
May 19, 2005
Filing Date:
November 05, 2004
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
TAWARAYA SEIJI (JP)
HONDA TOMOHISA (JP)
SUMINO TOMONOBU (JP)
TAWARAYA SEIJI (JP)
HONDA TOMOHISA (JP)
SUMINO TOMONOBU (JP)
International Classes:
G02F1/1335; G02F1/1339; (IPC1-7): G02F1/1339
Foreign References:
| JPH10123534A | 1998-05-15 | |||
| JPH11264968A | 1999-09-28 | |||
| JP2000338503A | 2000-12-08 | |||
| JP2002031805A | 2002-01-31 | |||
| JP2002182220A | 2002-06-26 | |||
| JP2002214622A | 2002-07-31 | |||
| JP2002341354A | 2002-11-27 | |||
| JP2003084289A | 2003-03-19 | |||
| JP2003121857A | 2003-04-23 | |||
| JP2003131238A | 2003-05-08 | |||
| JP2003156750A | 2003-05-30 | |||
| JPH0315824A | 1991-01-24 |
Attorney, Agent or Firm:
Yamashita, Akihiko c/o Tokyo, Central Patent Firm (4th Floor Oak Building Kyobashi, 16-10,
Kyobashi 1-chom, Chuou-ku Tokyo 31, JP)
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