Liquid crystal cells – elements and systems – Particular excitation of liquid crystal – Electrical excitation of liquid crystal
Patent
1996-06-18
1999-05-18
Sikes, William L.
Liquid crystal cells, elements and systems
Particular excitation of liquid crystal
Electrical excitation of liquid crystal
139147, 139187, 139139, G02F1/136;1/1343;1/13
Patent
active
059055499
ABSTRACT:
A redundant electricity-conducting structure, and a method for making it, for use in a liquid crystal display ("LCD"). The LCD has a first layer and a second layer covering a portion of the first layer such that an edge is formed where the second layer starts. The redundant structure includes: a first conductor partially covering each of an area over the first layer and the second layer such that the first conductor must undergo a large change in surface direction where the conductor follows the edge contour of the second layer; and a redundant second conductor connected to and partially covering the first conductor at least in an area extending outside of an area under which is located the large change in surface direction. An example of the redundant electricity-conducting structure is where the first layer is a substrate, the second layer is a gate line, the first conductor is a data lien oriented perpendicularly to the gate line, the structure includes an insulating layer between the data line and the gate line, and the second conductor at least covers an area on the data line adjacent to and outside of intersection region of the data line with the gate line. Another example is where the first layer is an insulating layer, the first conductor is either a source or drain electrode for a transistor, and the second layer is a semiconductor layer connecting the source electrode to a drain electrode.
REFERENCES:
patent: 4781438 (1988-11-01), Noguchi
patent: 4938567 (1990-07-01), Chartier
patent: 5148301 (1992-09-01), Sawatsubashi et al.
patent: 5334860 (1994-08-01), Naito
patent: 5559345 (1996-09-01), Kim
LG Electronics Inc.
Sikes William L.
Ton Toan
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