Active matrix liquid crystal display having a spatial coordinate

Details Active matrix liquid crystal display having a spatial coordinate Active matrix liquid crystal display having a spatial coordinate

1994-07-25

1996-08-27

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

345104, G02F 11335

Patent

active

055506593

ABSTRACT:
A liquid crystal layer is disposed between a member including a transparent substrate on which pixel electrodes, TFTs, scan lines, and data lines are formed and a member including another transparent substrate over which there are formed two sets of stripe-shaped electrodes to be vertical to each other with an insulating layer inserted therebetween and a uniform transparent conductive layer as an opposing electrode over the stripe-shaped electrodes with an insulating layer inserted therebetween. The stripe-shaped electrodes are arranged, when viewed from above, to occupy gap areas between the pixel electrodes. Sequentially applying voltage pulses to the electrodes beginning at an end portion thereof, a pen input function is achieved according to the electrostatic capacitive-coupling scheme. An active matrix liquid crystal display (AMLCD) having a pen input function is thus obtained at a low cost without deteriorating the display performance.

REFERENCES:
patent: 4679909 (1987-07-01), Hamada et al.
patent: 4785564 (1988-11-01), Gurtler
patent: 4841290 (1989-06-01), Nakano et al.
patent: 5151688 (1992-09-01), Tanaka et al.
patent: 5194852 (1993-03-01), More et al.
patent: 5410329 (1995-04-01), Tagawa et al.

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