Method of manufacturing a thin film transistor substrate
First Claim
1. A method of manufacturing a thin film transistor substrate, the method comprising:
- sequentially forming a gate insulating film and an active layer on a substrate, the substrate having a gate wire including a gate line and a gate electrode connected to the gate line formed thereon;
forming a data metal layer on the active layer, the data metal layer including a first metal layer, a second metal layer and a third metal layer disposed, in sequence;
forming a first photoresist pattern on the data metal layer, the first photoresist pattern having a thinner thickness at a channel region than at an adjacent region;
dry-etching the third metal layer by using the first photoresist pattern;
simultaneously dry-etching the second metal layer and the first metal layer by using the first photoresist pattern to form a data line;
dry-etching the active layer by using the first photoresist pattern;
removing a portion of the first photoresist pattern to form a second photoresist pattern by which the channel region is removed; and
forming a source electrode connected to the data line and a drain electrode spaced apart from the source electrode by dry-etching the channel region of the data metal layer by using the second photoresist pattern.
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Accused Products
Abstract
A method of manufacturing a thin film transistor (“TFT”) substrate includes forming a gate insulating film and an active layer on a substrate, forming a data metal layer including a first, second, and third metal layers on the active layer, forming a first photoresist pattern on the data metal layer, dry-etching the third metal layer by using the first photoresist pattern, simultaneously dry-etching the second and first metal layers by using the first photoresist pattern, dry-etching the active layer by using the first photoresist pattern, etching the first photoresist pattern to form a second photoresist pattern by which the channel region is removed and forming a source electrode and a drain electrode by dry-etching the channel region of the data metal layer by using the second photoresist pattern.
9 Citations
20 Claims
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1. A method of manufacturing a thin film transistor substrate, the method comprising:
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sequentially forming a gate insulating film and an active layer on a substrate, the substrate having a gate wire including a gate line and a gate electrode connected to the gate line formed thereon; forming a data metal layer on the active layer, the data metal layer including a first metal layer, a second metal layer and a third metal layer disposed, in sequence; forming a first photoresist pattern on the data metal layer, the first photoresist pattern having a thinner thickness at a channel region than at an adjacent region; dry-etching the third metal layer by using the first photoresist pattern; simultaneously dry-etching the second metal layer and the first metal layer by using the first photoresist pattern to form a data line; dry-etching the active layer by using the first photoresist pattern; removing a portion of the first photoresist pattern to form a second photoresist pattern by which the channel region is removed; and forming a source electrode connected to the data line and a drain electrode spaced apart from the source electrode by dry-etching the channel region of the data metal layer by using the second photoresist pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing a thin film transistor substrate, the method comprising:
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sequentially forming a gate insulating film and an active layer on a substrate, the substrate having a gate wire including a gate line and a gate electrode connected to the gate line formed thereon; forming a data metal layer on the active layer, the data metal layer including a first metal layer, a second metal layer and a third metal layer disposed, in sequence; forming a photoresist pattern on the data metal layer having a thinner thickness at a channel region than at an adjacent region; dry-etching the third metal layer by using the photoresist pattern; dry-etching the second metal layer by using the photoresist pattern; simultaneously dry-etching the first metal layer and the active layer by using the photoresist pattern to form a data line; and forming a source electrode connected to the data line and a drain electrode spaced apart from the source electrode by dry-etching the channel region of the data metal layer by using the photoresist pattern. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of manufacturing a thin film transistor substrate, the method comprising:
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sequentially forming a gate insulating film and an active layer on a substrate, the substrate having a gate wire including a gate line and a gate electrode connected to the gate line formed thereon; forming a data metal layer on the active layer, the data metal layer including a first metal layer, a second metal layer and a third metal layer disposed in sequence; forming a photoresist pattern on the data metal layer having a thinner thickness at a channel region than at an adjacent region; dry-etching the third metal layer by using the photoresist pattern; dry-etching the second metal layer by using the photoresist pattern; dry-etching the first metal layer by using the photoresist pattern; and
,dry-etching the active layer by using the photoresist pattern; wherein at least two dry-etching processes dry-etching the third metal layer, the second metal layer, the first metal layer, and the active layer by using the photoresist pattern are performed simultaneously. - View Dependent Claims (17, 18, 19, 20)
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Specification