Liquid crystal display device
First Claim
1. A method for forming a liquid crystal display device, comprising the steps of:
- forming a metal film over a substrate;
patterning said metal film to form a first gate electrode and a first capacitor electrode as a part of a first capacity element;
forming a first insulating film over said metal film;
forming a first polycrystalline-silicon layer over said first insulating film;
patterning said first polycrystalline-silicon layer to form a second capacitor electrode as a part of said first capacity element and a second capacity element;
forming a second insulating film over said polycrystalline-silicon layer;
forming a second polycrystalline-silicon layer over said second insulating film; and
patterning said second polycrystalline-silicon layer to form a second gate electrode and a third capacitor electrode as part of said second capacity element.
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0 Petitions
Accused Products
Abstract
A method for forming a liquid crystal display device, which includes steps of forming a metal film over a substrate, patterning the metal film to form a first gate electrode and a first capacitor electrode as a part of a first capacity element, and forming a first insulating film over the metal film. The steps further include forming a first polycrystalline-silicon layer over the first insulating film, and patterning the first polycrystalline-silicon layer to form a second capacitor electrode as a part of the first capacity element and a second capacity element, while additionally including the steps forming a second insulating film over the polycrystalline-silicon layer, forming a second polycrystalline-silicon layer over the second insulating film, and patterning the second polycrystalline-silicon layer to form a second gate electrode and a third capacitor electrode as part of the second capacity element.
42 Citations
8 Claims
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1. A method for forming a liquid crystal display device, comprising the steps of:
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forming a metal film over a substrate;
patterning said metal film to form a first gate electrode and a first capacitor electrode as a part of a first capacity element;
forming a first insulating film over said metal film;
forming a first polycrystalline-silicon layer over said first insulating film;
patterning said first polycrystalline-silicon layer to form a second capacitor electrode as a part of said first capacity element and a second capacity element;
forming a second insulating film over said polycrystalline-silicon layer;
forming a second polycrystalline-silicon layer over said second insulating film; and
patterning said second polycrystalline-silicon layer to form a second gate electrode and a third capacitor electrode as part of said second capacity element. - View Dependent Claims (2, 3, 4)
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5. A method for forming a liquid crystal display device, comprising the steps of:
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forming a metal film over a substrate;
patterning said metal film to form a first gate electrode and a first capacitor electrode as part of a first capacity element;
forming a first insulating film over said metal film;
forming a first polycrystalline-silicon layer over said first insulating film;
patterning said first polycrystalline silicon layer to form a second capacitor electrode as part of said first capacity element and a second capacity element;
forming a second insulating film over said first polycrystalline-silicon layer;
forming a second polycrystalline silicon layer over said second insulating film;
opening a through hole on said first and second insulating films in a peripheral portion of a pixel portion;
patterning said second polycrystalline-silicon layer to form a second gate electrode and a third capacitor electrode as part of said second capacity element; and
connecting said second polycrystalline-silicon layer to said metal film through said through hole. - View Dependent Claims (6, 7, 8)
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Specification