(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2003/0025659 Al
Kondo et al. (43) Pub. Date: Feb. 6,2003
(54) LIGHT VALVE DEVICE
(75) Inventors: Kenichi Kondo, Tokyo (JP); Kunihiro Takahashi, Tokyo (JP); Hiroaki Takasu, Tokyo (JP); Tsuneo Yamazaki, Tokyo (JP); Atsushi Sakurai, Tokyo (JP)
Bruce L. Adams
Adams & Wilks
New York, NY 10004 (US)
(73) Assignee: SEIKO INSTRUMENTS INC.
(21) Appl. No.: 09/931,843
(22) Filed: Aug. 17, 2001
Related U.S. Application Data
(62) Division of application No. 08/132,692, filed on Oct. 6, 1993, now Pat. No. 6,304,243.
(30) Foreign Application Priority Data
Oct. 12, 1992 (JP) 4-273023
Oct. 15, 1992 (JP) 4-277269
Oct. 19, 1992 (JP) 4-280326
Oct. 19, 1992 (JP) 4-280327
Nov. 6, 1992 (JP) 4-297195
Sep. 20, 1993 (JP) 5-233594
(51) Int. CI.7 G09G 3/36
(52) U.S. C I 345/87
An object of the present invention is to provide an improved structure of highly fine bight valve device.
On a quartz glass substrate 1 and a monocrystalline silicon thin film layer z bonded on the quartz glass substrate 2, are provided an X diving circuit 6 and a Y driving circuit 8 integrated by a very large scale integration process, driving electrodes 5 of a matrix type for conduction signals outputted from the X driving circuit 6 and the Y driving circuit 8, a transistor 9 and a display pixel electrode 10 arranged at a cross-section of the driving electrodes 5 of a matrix type, a control circuit 4 for supplying timing signals to the X driving circuit 6 and the Y driving circuit 8, and a display data generating circuit 3 for generating display data in order to display an image, and further a light source element driving circuit 19 for driving a light source element is provided thereon. A liquid crystal layer 16 is sealed in a gap between the first transparent substrate and the second transparent substrate with a sealing agent 15. The sealing agent 15 is composed of, for example, an adhesive resin which is stiffened by ultraviolet irradiation, and is supplied along a predetermined seal region 18. The present invention provides an improved enforced structure of the light valve device having high reliability, convenience to use, a very compact size, high density and high accuracy.