Thin film transistor array, method of producing the same, and display panel using the same
First Claim
Patent Images
1. A thin film transistor array comprising:
- an insulating substrate;
thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors; and
pixel electrodes each connected to the drain portion of one of the thin film transistors;
wherein the pixel electrodes contain a semiconductor material the same as a material of the semiconductor layer of each of the thin film transistors.
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Accused Products
Abstract
By imparting conductivity to specified regions of a semiconductor material film 4 formed over a substrate 2, the semiconductor material film 4, in addition to being processed into channel portions (active layers) 4a, source portions 4b, and drain portions 4c of TFTs, is processed into conductive elements containing pixel electrodes 10 connected to the drain portions 4c. Regions composed of an intrinsic semiconductor to which impurities have not been added serve as the active layers (channel regions) of the TFTs and regions to which impurities have been added serve as conductive elements. When transparent electrodes are formed, an oxide semiconductor is used.
4060 Citations
59 Claims
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1. A thin film transistor array comprising:
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an insulating substrate;
thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors; and
pixel electrodes each connected to the drain portion of one of the thin film transistors;
wherein the pixel electrodes contain a semiconductor material the same as a material of the semiconductor layer of each of the thin film transistors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21)
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18. A thin film transistor array comprising:
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an insulating substrate;
thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors; and
pixel electrodes each connected to the drain portion of one of the thin film transistors;
wherein the source portions and the drain portions are directly connected to the source signal lines and the pixel electrodes, respectively, the source signal lines and the pixel electrodes being composed of the same material.
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22. A method of producing a thin film transistor array, comprising an insulating substrate;
- thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors; and
pixel electrodes each connected to the drain portion of one of the thin film transistors, the method comprising processing a semiconductor material film formed over the substrate into a plurality of elements including pixel electrodes and a semiconductor layer of each of the thin film transistors by adding a p-type impurity or an n-type impurity to specified regions of the semiconductor material film. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
- thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
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47. A method of producing a thin film transistor array comprising an insulating substrate;
- thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors; and
pixel electrodes each connected to the drain portion of one of the thin film transistors, wherein source signal lines and pixel electrodes are formed so as to be directly connected to exposed source portions and drain portions of semiconductor layers formed on the substrate.
- thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
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58. A display panel comprising an array substrate, a counter substrate, and a liquid crystal layer sandwiched between the array substrate and the counter substrate, the array substrate comprising:
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an insulating substrate;
thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors; and
pixel electrodes each connected to the drain portion of one of the thin film transistors and containing a semiconductor material the same as a material of the semiconductor layer of each of the thin film transistors.
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59. A display panel comprising:
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an insulating substrate;
thin film transistors disposed on the substrate in a matrix, each of the thin film transistors comprising a semiconductor layer having a channel portion, a source portion, and a drain portion;
source signal lines each for supplying a source signal to a given column of the thin film transistors;
gate signal lines each for supplying a gate signal to a given row of the thin film transistors;
pixel electrodes each connected to the drain portion of one of the thin film transistors and containing a semiconductor material the same as a material of the semiconductor layer of each of the thin film transistors;
an electroluminescent layer stacked on the pixel electrodes; and
a counter electrode stacked on the electroluminescent layer.
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Specification