Active matrix liquid crystal display

Details Active matrix liquid crystal display Active matrix liquid crystal display

1993-02-04

1995-10-17

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 67, G02F 11343

Patent

active

054595959

ABSTRACT:
A parasitic capacitance is not caused between a shielding film and a gate line and between a pixel electrode and the gate line in a liquid crystal display of the present invention because the shielding film and the pixel electrode do not overlap the gate lines. The display characteristics are thus improved. Furthermore, since the counter shielding film is formed so as to cover a smaller gap of one between the shielding film and the gate line and one between the gate line and pixel electrode, light leak through the gap can be blocked. The shielding film can be small because it only covers the gap, thereby preventing a degradation of an aperture ratio. Moreover, a degradation of yield caused by increasing a number of production steps is also prevented because the production steps are not complicated. In another aspect of the liquid crystal display of the present invention, since the gate line is electrically connected to a counter electrode, a part of the parasitic capacitance caused between the pixel electrode and the shielding film end between the pixel electrode and the gate line is connected in parallel to a capacitance of liquid crystal and used as a storage capacitance. As a result, the parasitic capacitance less influences on the display characteristics, which is thus further improved. Further, since storage capacitance lines are not required, the aperture rate is not degraded and a degradation of yield caused by increasing a number of the production steps is prevented.

REFERENCES:
patent: 4653862 (1987-03-01), Morozumi
patent: 4687298 (1987-08-01), Aoki et al.
patent: 4881797 (1989-11-01), Aoki et al.
patent: 4948231 (1990-08-01), Aoki et al.
patent: 5128786 (1992-07-01), Yanagisawa
patent: 5142392 (1992-08-01), Ueki et al.
SID 91 Digest, pp. 215-218, Tsumura et al: "High-Resolution 10.3-in.-Diagonal Multicolor TFT-LCD".

Affiliated with

Also associated with

Rating

Active matrix liquid crystal display 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 liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix liquid crystal display will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-602225