Active matric drive liquid crystal display device using polycrystalline silicon pixel electrodes
First Claim
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1. An active matrix drive liquid crystal display device comprising:
- a substrate;
a plurality of switching thin film transistors formed on the substrate in a matrix arrangement;
a plurality of transparent polycrystalline silicon pixel electrodes corresponding to the respective switching thin film transistors, each of said pixel electrodes being formed in a one-piece body with a drain electrode of a corresponding one of said switching thin film transistors so that active layers of said switching thin film transistors and respective pixel electrodes are formed by common semiconductor layers; and
a plurality of transparent electrodes disposed opposite to the pixel electrodes such that liquid crystal can be sandwiched between the pixel electrodes and the transparent electrodes.
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Abstract
An image display device includes thin film transistors and pixel electrodes arranged in matrix form on a substrate. A semiconductor layer forming a channel region of the thin film transistor also serves as the pixel electrode, thereby making the structure of the device simple and facilitating fabrication thereof.
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Citations
14 Claims
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1. An active matrix drive liquid crystal display device comprising:
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a substrate; a plurality of switching thin film transistors formed on the substrate in a matrix arrangement; a plurality of transparent polycrystalline silicon pixel electrodes corresponding to the respective switching thin film transistors, each of said pixel electrodes being formed in a one-piece body with a drain electrode of a corresponding one of said switching thin film transistors so that active layers of said switching thin film transistors and respective pixel electrodes are formed by common semiconductor layers; and a plurality of transparent electrodes disposed opposite to the pixel electrodes such that liquid crystal can be sandwiched between the pixel electrodes and the transparent electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification