Thin film transistor array panel for display

• US 20050174846A1
• Filed: 12/03/2004
• Published: 08/11/2005
• Est. Priority Date: 12/03/2003
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Chul-Ho, Park, Tae-Hyeong, Kim, Il-Gon, Kim, Cheol-Min
• Granted Patent: US 7,148,509 B2
• Time in Patent Office: Days
• US Class Current: 365/185.60
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/136259 Repairing; Defects
• CPC Class Codes: H01L 27/12 the substrate being other than a semiconductor body, e.g. an insulating body

Abstract

A TFT array panel is provided, including an insulating substrate, gate lines horizontally provided on the insulating substrate, data lines isolated from the gate lines and intersecting the gate lines, a pixel electrode in a pixel region defined by intersecting the gate lines and data lines, a TFT for transmitting or intercepting an image signal transmitted through the plurality of data lines to the pixel electrode in response to a scanning signal transmitted from the plurality of gate lines, a transmission gate for distributing the image signal input from an input line to the plurality of data lines, and a repair line intersecting the input line of the transmission gate. Therefore, since the input repair line and the input line of the transmission gate are intersected, a parasitic capacitance occurring between the repair line and the input line of the transmission gate can be reduced.

Claims

1. A thin film transistor (TFT) array panel comprising:

an insulating substrate;

a plurality of gate lines horizontally provided on the insulating substrate;

a plurality of data lines isolated from the gate line and intersecting the plurality of gate lines;

a plurality of pixel electrodes in pixel regions defined by intersecting the plurality of gate lines and the plurality of data lines;

a plurality of TFT for transmitting or intercepting an image signal transmitted through the plurality of data lines to the pixel electrodes in response to a scanning signal transmitted from the plurality of gate lines;

a transmission gate for distributing the image signal input from an input line to the plurality of data lines; and

a repair line intersecting the input line of the transmission gate.

2. The TFT array panel of claim 1, wherein the repair line includes an input repair line and an end repair line, and the TFT array panel further comprises a repair transmission gate for connecting the input repair line to the end repair line.

3. The TFT array panel of claim 2, wherein the transmission gate includes a plurality of TFTs having each output terminal connected to each data line, each input terminal connected to an input line of the transmission gate, and each gate terminal connected to each scanning signal line of the transmission gate;

and

the repair transmission gate has an output terminal connected to the end repair line, an input terminal connected to the input repair line, and gate terminals overlapped with gate terminal connecting pieces connected to the transmission gate scanning signal lines.

4. The TFT array panel of claim 3, wherein the transmission gate has three input terminals which form a set and are connected to the input line of the transmission gate;

the transmission gate scanning signal lines has three lines; and

the transmission gate has three gate terminals corresponding to the three input terminals of the transmission gate, and they are connected to the three transmission gate scanning signal lines, respectively.

5. The TFT array panel of claim 4, wherein the number of gate terminal connecting pieces overlapped with the gate terminals of the repair transmission gate is three, and three gate terminal connecting pieces are connected to three transmission gate scanning signal lines, respectively.

6. The TFT array panel of claim 3, further comprising diodes for connecting the input line of the transmission gate and the input terminal of the repair transmission gate to a power supply line.

7. The TFT array panel of claim 2, wherein the length of a channel of the repair transmission gate is longer than that of a channel of the transmission gate.