LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. A liquid crystal display device comprising a first pixel and a second pixel which is adjacent to the first pixel, each of the first pixel and the second pixel comprising:
- a first wiring;
a first insulating film over the first wiring;
a second wiring over the first insulating film, the second wiring being perpendicular to the first wiring;
a transistor comprising a gate electrode, a gate insulating film, a semiconductor layer, a source electrode, and a drain electrode; and
a second insulating film over the first insulating film and the transistor,wherein the second wiring in the first pixel is spaced from the second wiring in the second pixel,wherein the second wiring in the first pixel and the second wiring in the second pixel are electrically connected to each other with a connection electrode which is located over the second insulating film, andwherein the first insulating film and the gate insulating film exist in the same layer.
1 Assignment
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Accused Products
Abstract
Provided are a liquid crystal display device with horizontal electric field mode, in which a decrease in driving speed can be suppressed by reducing the resistance of a wiring even when the number of pixels is increased, and a manufacturing method thereof. One of a scan wiring and a signal wiring is divided in an intersection portion where the scan wiring and the signal wiring intersect with each other, and the separated wirings are connected with a connection electrode positioned over a thick insulating film. Accordingly, parasitic capacitance at the intersection portion can be reduced, preventing the decrease in the driving speed. The connection electrode is formed at the same time as formation of a pixel electrode and a common electrode using a low-resistance metal, which contributes to the reduction in manufacturing process of the liquid crystal display device.
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Citations
20 Claims
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1. A liquid crystal display device comprising a first pixel and a second pixel which is adjacent to the first pixel, each of the first pixel and the second pixel comprising:
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a first wiring; a first insulating film over the first wiring; a second wiring over the first insulating film, the second wiring being perpendicular to the first wiring; a transistor comprising a gate electrode, a gate insulating film, a semiconductor layer, a source electrode, and a drain electrode; and a second insulating film over the first insulating film and the transistor, wherein the second wiring in the first pixel is spaced from the second wiring in the second pixel, wherein the second wiring in the first pixel and the second wiring in the second pixel are electrically connected to each other with a connection electrode which is located over the second insulating film, and wherein the first insulating film and the gate insulating film exist in the same layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A liquid crystal display device comprising a first pixel and a second pixel which is adjacent to the first pixel, each of the first pixel and the second pixel comprising:
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a first wiring; a first insulating film over the first wiring; a second wiring over the first insulating film, the second wiring being perpendicular to the first wiring and spaced from the second wiring in the second pixel; a transistor comprising a gate electrode, a gate insulating film, a semiconductor layer, a source electrode, and a drain electrode; a second insulating film over the first insulating film and the transistor; a connection electrode over the second insulating film, the connection electrode electrically connecting the second wiring in the first pixel to the second wiring in the second pixel; and a third insulating film over and in contact with the connection electrode, wherein the first insulating film and the gate insulating film exist in the same layer. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification