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US 2024/0194148 A1Published application
Scan driver
AssigneeSamsung Display Co., Ltd.
InventorsHaijung IN, Wonkyu KWAK, Kimyeong EOM
Life of this patent
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Abstract
According to an embodiment, a scan driver includes a plurality of stages. An output controller of each of the stages includes a pull-down transistor, and the pull-down transistor includes a first gate and a second gate, where the first gate is electrically connected to a third control node or a node electrically connected to the third control node, and the second gate is connected to a third voltage input terminal to which a third voltage of a second voltage level is applied.
Claims18
A driver comprising a plurality of stages, wherein each of the plurality of stages comprises:
- a first circuit comprising a first transistor, the first transistor being connected between an input terminal to which a start signal is applied and a first node, wherein the first transistor transfers the start signal to the first node in response to a first clock signal;
- a second circuit connected to the first node and a second node, wherein the second circuit controls voltages of the first node and the second node in response to the first clock signal and a second clock signal;
- a third circuit connected to the first node and the second node, wherein the third circuit transfers the second clock signal to a third node in response to the start signal at the first node;
- and
- a first output circuit connected to the third node, wherein the first output circuit outputs a first gate control signal having a voltage level that is an inversion of a voltage level of the second clock signal at the third node,
- wherein the first output circuit comprises a first pull-up transistor and a first pull-down transistor, and a type of the first pull-up transistor and a type of the first pull-down transistor are different each other.
3 more elements
Dependencies are inferred from the claim text.