Gate driver and method of repairing the same
AssigneeLG Display Co., Ltd.
InventorsWonJune Jung, WooSup Shin, SangMoo Park
Life of this patent
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Abstract
According to an aspect of the present disclosure, there is provided a gate driver and a method of repairing the same. The gate driver can include a plurality of driving stages cascade connected, at least one repairing stage disposed between the plurality of driving stages, and a plurality of repair lines connected to the at least one repair stage. The plurality of repair lines overlap with a plurality of lines connected to the plurality of driving stages. The repairing stage can replace a defective driving stage of the gate driver.
Claims17
A gate driver comprising:
- a plurality of driving stages cascade connected;
- at least one repairing stage disposed between the plurality of driving stages;
- and
- a plurality of repair lines connected to the at least one repairing stage,
- wherein the plurality of repair lines overlap with a plurality of lines connected to the plurality of driving stages,
- wherein the plurality of repair lines comprise a plurality of input repair lines overlapping a plurality of lines connected to input terminals of the plurality of driving stages;
- and a plurality of output repair lines overlapping a plurality of lines connected to output terminals of the plurality of driving stages,
- wherein each of the plurality of driving stages comprises a plurality of pull-up transistors each controlled by a Q-node, a plurality of pull-down transistors each controlled by a QB-node, a Q-node control unit controlling the Q-node and a QB-node control unit controlling the OB-node,
- wherein each of the at least one repairing stages comprises a plurality of pull-up transistors each controlled by a Q-node, a plurality of pull-down transistors each controlled by a QB-node, a O-node control unit controlling the Q-node and a QB-node control unit controlling the QB-node, and
- wherein the input repair lines comprise a first input repair line connected between an output terminal of a Q-node control unit of some of the plurality of driving stages and a Q-node of some of the at least one repairing stage;
- and a second input repair line connected between an output terminal of a QB-node control unit of the some of the plurality of driving stages and a GB-node of the some of the at least one repairing stage.
A method of repairing a gate driver including a plurality of driving stages cascade connected, at least one repairing stage disposed between the plurality of driving stages, and a plurality of repair lines connected to the at least one repairing stage and overlapping with a plurality of lines connected to the plurality of driving stages, the method comprising:
- detecting a defective driving stage from among the plurality of driving stages;
- cutting input terminals and output terminals of the defective driving stage;
- and
- welding the plurality of repair lines and the lines connected to the plurality of driving stages,
- wherein the cutting the input terminals and the output terminals of the defective driving stage comprises cutting a Q-node and a QB-node of the defective driving stage.
Dependencies are inferred from the claim text.