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US 8,576,348 B2Granted
Reflective liquid crystal display panel and device using same
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Hisashi Ohtani, Jun Koyama, Satoshi Teramoto
Life of this patent
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Abstract
There is disclosed an active matrix reflective liquid crystal display panel on which an active matrix circuit is integrated with peripheral driver circuits. Metal lines in the peripheral driver circuits are formed simultaneously with pixel electrodes. Thus, neither the process sequence nor the structure is complicated.
Claims25
A display device comprising:
- a thin film transistor over a substrate;
- a first conductive film over the substrate and connected with one of a source region and a drain region of the thin film transistor, the first conductive film comprising a first conductive layer, a second conductive layer over the first conductive layer, and a third conductive layer over the second conductive layer;
- a first insulating film including a first contact hole over the first conductive film;
- a second conductive film over the first insulating film;
- a second insulating film including a second contact hole over the second conductive film;
- and
- a third conductive film over the second insulating film and in contact with at least a part of the second conductive layer through the first contact hole and the second contact hole,
- wherein at least a part of the second contact hole overlaps with the first contact hole.
5 more elements
A display device comprising:
- a thin film transistor over a substrate;
- a first conductive film over the substrate and connected with one of a source region and a drain region of the thin film transistor, the first conductive film comprising a first conductive layer, a second conductive layer over the first conductive layer, and a third conductive layer over the second conductive layer;
- a second conductive film over the substrate;
- an insulating film including a contact hole over the first conductive film and the second conductive film;
- a third conductive film over the insulating film and in contact with at least a part of the second conductive layer through the contact hole,
- wherein at least a part of the third conductive film overlaps with the second conductive film.
3 more elements
A display device comprising:
- a thin film transistor over a substrate;
- a first conductive film over the substrate and connected with one of a source region and a drain region of the thin film transistor, the first conductive film comprising a first conductive layer, a second conductive layer over the first conductive layer, and a third conductive layer over the second conductive layer;
- a first insulating film including a first contact hole over the first conductive film;
- a second conductive film over the first insulating film;
- a second insulating film including a second contact hole over the second conductive film;
- and
- a third conductive film over the second insulating film and in contact with at least a part of the second conductive layer through the first contact hole and the second contact hole,
- wherein the second conductive film is not in contact with the first conductive film and the third conductive film.
5 more elements
Dependencies are inferred from the claim text.