TFT array substrate and active-matrix addressing liquid-crystal display device
First Claim
1. A TFT array substrate comprising:
- (a) a transparent plate;
(b) TFTs arranged on the plate in a matrix array with rows and columns,each of the TFTs having a first source/drain region, a second source/drain region, and an active layer;
(c) gate lines formed on the plate in such a way as to extend along the rows of the matrix;
(d) data lines formed on the plate in such a way as to extend along the columns of the matrix,each of the data lines being electrically connected to corresponding ones of the TFTs at their first source/drain regions;
(e) pixel electrodes formed in pixel areas on the plate,each of the pixel electrodes being electrically connected to corresponding ones of the TFTs at their second source/drain regions;
(f) a patterned first light-shielding layer formed between the plate and the TFTs in such a way as to overlap with the active layers of the TFTs;
(g) a patterned second light-shielding layer formed between the first light-shielding layer and the TFTs,the second light-shielding layer having a light-absorbing property; and
(h) a patterned third light-shielding layer formed to cover the TFTs on an opposite side to the plate with respect to the TFTs,the third light-shielding layer having first parts extending along the rows of the matrix and second parts extending along the columns thereof.
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Accused Products
Abstract
A TFT array substrate blocks light traveling toward active layers of the TFTs. A patterned first light-shielding layer is formed between a transparent plate and TFTs to overlap with the active layers of the TFTs. A patterned third light-shielding layer is formed to cover the TFTs on the opposite side to the plate with respect to the TFTs. The third light-shielding layer has the first parts extending along rows of the matrix and the second parts extending along the columns thereof. A patterned second light-shielding layer is formed between the first light-shielding layer and the TFTs. The second light-shielding layer has a light-absorbing property, which absorbs the light entering the inside of the substrate. A patterned fourth light-shielding layer may be additionally provided between the TFTs and the third light-shielding layer.
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Citations
25 Claims
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1. A TFT array substrate comprising:
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(a) a transparent plate; (b) TFTs arranged on the plate in a matrix array with rows and columns, each of the TFTs having a first source/drain region, a second source/drain region, and an active layer; (c) gate lines formed on the plate in such a way as to extend along the rows of the matrix; (d) data lines formed on the plate in such a way as to extend along the columns of the matrix, each of the data lines being electrically connected to corresponding ones of the TFTs at their first source/drain regions; (e) pixel electrodes formed in pixel areas on the plate, each of the pixel electrodes being electrically connected to corresponding ones of the TFTs at their second source/drain regions; (f) a patterned first light-shielding layer formed between the plate and the TFTs in such a way as to overlap with the active layers of the TFTs; (g) a patterned second light-shielding layer formed between the first light-shielding layer and the TFTs, the second light-shielding layer having a light-absorbing property; and (h) a patterned third light-shielding layer formed to cover the TFTs on an opposite side to the plate with respect to the TFTs, the third light-shielding layer having first parts extending along the rows of the matrix and second parts extending along the columns thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A TFT array substrate comprising:
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(a) a transparent plate; (b) TFTs arranged on the plate in a matrix array with rows and columns, each of the TFTs having a first source/drain region, a second source/drain region, and an active layer; (c) gate lines formed on the plate in such a way as to extend along the rows of the matrix; (d) data lines formed on the plate in such a way as to extend along the columns of the matrix, each of the data lines being electrically connected to corresponding ones of the TFTs at their first source/drain regions; (e) pixel electrodes formed in pixel areas on the plate, each of the pixel electrodes being electrically connected to corresponding ones of the TFTs at their second source/drain regions; (f) a patterned first light-shielding layer formed between the plate and the TFTs in such a way as to overlap with the active layers of the TFTs; (g) a patterned third light-shielding layer formed to cover the TFTs on an opposite side to the plate with respect to the TFTs, the third light-shielding layer having first parts extending along the rows of the matrix and second parts extending along the columns thereof; and (h) a patterned fourth light-shielding layer formed between the TFTs and the third light-shielding layer, the fourth light-shielding layer having a light-absorbing property. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification