Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Patent
1996-03-18
1998-01-13
Sikes, William L.
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
349 44, 349110, 349111, G02F 11343, G02F 11333
Patent
active
057084858
ABSTRACT:
To give an electric shield function and an electric contact function to a light shielding film formed on a drive substrate.
An active matrix display device includes a drive substrate 1 having pixels 4, an opposed substrate 2 having an opposed electrode 5, and a liquid crystal 3 held in a space defined between the drive substrate 1 and the opposed substrate 2. An upper layer portion of the drive substrate 1 includes pixel electrodes 6 formed individually for the pixels 4. A lower layer portion of the drive substrate 1 includes thin-film transistors 7 for individually driving the pixel electrodes 6, scanning lines 8, and signal lines 9. A light shielding film having conductivity is interposed between the upper layer portion and the lower layer portion, and is divided into mask shielding films 16M and pad shielding films 16P. Each mask shielding film 16M is continuously patterned along each row of the pixels 4 to partially shield at least the corresponding thin-film transistor 7. Each mask shielding film 16M is insulated from both the upper layer portion and the lower layer portion, and is maintained at a fixed potential. The pad shielding films 16P are discretely patterned for the individual pixels 4, and each pad shielding film 16P is located at a contact portion C between the corresponding pixel electrode 6 and the corresponding thin-film transistor 7 to provide electrical connection therebetween and light shielding.
REFERENCES:
patent: 4759610 (1988-07-01), Yanagisawa
patent: 5327001 (1994-07-01), Wakai et al.
patent: 5414547 (1995-05-01), Matsuo et al.
patent: 5517341 (1996-05-01), Kim et al.
Hashimoto Yoshihiro
Makimura Shingo
Sato Takusei
Takatoku Makoto
Yoshida Kazuyoshi
Ngo Julie
Sikes William L.
Sony Corporation
LandOfFree
Active matrix display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active matrix display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix display device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-330397