Active matrix substrate, for use in a liquid crystal display and method for producing the same
First Claim
1. A transparent active matrix substrate, comprising:
- a switching device;
a scanning line electrically connected to the switching device;
a signal line electrically connected to the switching device and arranged so as to cross the scanning line;
a transparent interlayer insulation layer formed over the switching device, the scanning line and the signal line, the transparent interlayer insulation layer having a contact hole; and
a transparent picture element electrode provided on the transparent interlayer insulation layer and electrically connected to the switching device through the contact hole,wherein the transparent picture element electrode has a recessed portion in the contact hole and a non-recessed portion over the interlayer insulation layer, anda buried portion formed of a transparent insulation material is provided in the recessed portion over the transparent picture element electrode so that a top surface of the buried portion and a top surface of the non-recessed portion of the transparent picture element electrode are at an identical level.
1 Assignment
0 Petitions
Accused Products
Abstract
An active matrix substrate includes a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; an interlayer insulation layer formed over the switching device, the scanning line and the signal line, the interlayer insulation layer having a contact hole; and a picture element electrode provided on the interlayer insulation layer and electrically connected to the switching device through the contact hole. The picture element electrode has a recessed portion in the contact hole, and a buried portion formed of an insulation material is provided in the recessed portion so that a top surface of the buried portion and a top surface of the picture element electrode are at an identical level.
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Citations
20 Claims
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1. A transparent active matrix substrate, comprising:
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a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; a transparent interlayer insulation layer formed over the switching device, the scanning line and the signal line, the transparent interlayer insulation layer having a contact hole; and a transparent picture element electrode provided on the transparent interlayer insulation layer and electrically connected to the switching device through the contact hole, wherein the transparent picture element electrode has a recessed portion in the contact hole and a non-recessed portion over the interlayer insulation layer, and a buried portion formed of a transparent insulation material is provided in the recessed portion over the transparent picture element electrode so that a top surface of the buried portion and a top surface of the non-recessed portion of the transparent picture element electrode are at an identical level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An active matrix substrate, comprising:
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a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; an interlayer insulation layer formed over the switching device, the scanning line and the signal line, the interlayer insulation layer having a contact hole; and a picture element electrode provided on the interlayer insulation layer and electrically connected to the switching device through the contact hole, wherein the picture clement electrode has a recessed portion in the contact hole, and a buried portion formed of an insulation material is provided in the recessed portion so that a top surface of the buried portion and a top surface of the picture element electrode are at an identical level, wherein a plurality of convex areas are provided on the picture element electrode and a reflection electrode is formed over the plurality of convex areas, and wherein the plurality of convex areas are each formed of an insulation material, the picture element electrode is electrically connected to the reflection electrode between the plurality of convex areas, and a surface of the reflection electrode has convex areas and concave areas. - View Dependent Claims (15)
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16. An active matrix substrate, comprising:
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a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; an interlayer insulation layer formed over the switching device, the scanning line and the signal line, the interlayer insulation layer having a contact hole; and a picture element electrode provided on the interlayer insulation layer and electrically connected to the switching device through the contact hole, wherein the picture element electrode has a recessed portion in the contact hole, and a buried portion formed of an insulation material is provided in the recessed portion so that a top surface of the buried portion and a top surface of the picture element electrode are at an identical level, said buried portion having a convex portion.
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17. An active matrix substrate, comprising:
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a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; an interlayer insulation layer formed over the switching device, the scanning line and the signal line, the interlayer insulation layer having a contact hole; a picture element electrode provided on the interlayer insulation layer and electrically connected to the switching device through the contact hole; and an insulation layer provided on the picture element electrode; wherein the picture element electrode has a recessed portion in the contact hole, said insulation layer including a buried portion provided in the recessed portion so that a top surface of the buried portion and a top surface of the picture element electrode are at an identical level; and
wherein said insulation layer including the buried portion covers the picture element electrode, and a surface of the insulation layer is subjected to rubbing treatment so as to act as an alignment layer.
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18. A method for producing an active matrix substrate including:
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a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; a transparent interlayer insulation layer formed over the switching device, the scanning line and the signal line; a transparent picture element electrode provided on the transparent interlayer insulation layer; and a contact hole formed in the transparent interlayer insulation layer, wherein the transparent picture element electrode has a recessed portion in the contact hole and a non-recessed portion over the interlayer insulation layer, and the switching device is electrically connected to the transparent picture element electrode, the method comprising the step of; filling the recessed portion with a transparent insulation material to form a buried portion in the recessed portion over the transparent picture element electrode so that a top surface of the buried portion and a top surface of the non-recessed portion of the transparent picture element electrode are at an identical level.
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19. A method for producing an active matrix substrate including:
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a switching device; a scanning line electrically connected to the switching device; a signal line electrically connected to the switching device and arranged so as to cross the scanning line; an interlayer insulation layer formed over the switching device, the scanning line and the signal line; a picture element electrode provided on the interlayer insulation layer; and a contact hole formed in the interlayer insulation layer, wherein the picture element electrode has a recessed portion in the contact hole, and the switching device is electrically connected to the picture element electrode, the method comprising the steps of; forming a buried portion in the recessed portion of the picture element electrode, thereby filling the recessed portion, the buried portion being formed of an insulation material; forming a plurality of convex areas on the picture element electrode; and forming a reflection electrode so as to cover the plurality of convex areas, thereby forming convex areas and concave areas at a surface of the reflection electrode. - View Dependent Claims (20)
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Specification