Liquid crystal device, projection type color display device and driving circuit
AssigneeSeiko Epson Corporation
InventorsToshiyuki Misawa, Hiroyuki Oshima
Life of this patent
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Abstract
An active matrix panel including a matrix of driving electrodes couples through thin film transistor switches to a corresponding source line and gate line and at least one of a driver circuit including complementary thin film transistors for driving the source and/or gate lines of the picture elements on the substrate. The thin film transistors of the active matrix have the same cross-sectional structure as the P-type or the N-type thin film transistors forming the driver circuit and are formed during the same patterning process.
Claims23
A liquid crystal device for an electro-optical device comprising:
- a picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines;
- and
- a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and the resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to the resistance of the connecting line for connecting the another one of the signal buses to the another one of sample-hold circuits.
A projection type display device including a light source, at least one light valve and at least one projecting optical system for projecting a color image, comprising:
- a picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines;
- and
- a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and the resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to the resistance of the connecting line for connecting the another one of the signal buses to the another one of sample-hold circuits.
A driving circuit for driving a liquid crystal display device comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and a resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to a resistance of the connecting line for connecting the another one of the signal buses to the another one of the sample-hold circuits.
A projection type display device including a light source, at least one light valve and at least one projecting optical system for projecting a color image, comprising:
- a picture element matrix formed over a substrate, the picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines;
- and
- a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a width and a length of at least one of the plurality of connecting lines is different from a width and a length of another one of the plurality of connecting lines and the plurality of connecting lines have substantially equal resistances.
A driving circuit for driving a liquid crystal display device comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a width and a length of at least one of the plurality of connecting lines is different from a width and a length of another one of the plurality of connecting lines and the plurality of connecting lines have substantially equal resistances.
Dependencies are inferred from the claim text.