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US 8,941,579 B2Granted
Driving unit and gate driver circuit
AssigneeHannstar Display Corp.
InventorsHsien-Cheng Chang, Chih-Yang Yen
Life of this patent
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Abstract
The present invention discloses a gate driver circuit. The gate driver circuit includes a plurality of driving units electrically connected in series, wherein the gate driver circuit receives a plurality of frequency signals and the driving units transmit a plurality of output signals sequentially. Furthermore, each driving unit includes a primary circuit, a first voltage regulator circuit and a second voltage regulator circuit.
Claims10
A driving unit, comprising:
- a primary circuit, the primary circuit comprising:
- a first switch, comprising a control terminal receiving a first input signal, a first terminal receiving the first input signal and a second terminal coupled with a first node,
- a second switch, comprising a control terminal receiving a second input signal, a first terminal coupled with the first node and a second terminal coupled with a low voltage source,
- a third switch, comprising a control terminal receiving a third input signal, a first terminal receiving the third input signal and a second terminal coupled with the first node,
- a fourth switch, comprising a control terminal receiving a fourth input signal, a first terminal coupled with the first node and a second terminal coupled to the low voltage source,
- a fifth switch, comprising a control terminal coupled to the first node, a first terminal receiving a frequency signal and a second terminal transmitting an output signal, and
- a capacitor, coupled between the control terminal and the second terminal of the fifth switch;
- a first voltage regulator circuit, comprising:
- a sixth switch, comprising a control terminal receiving a first voltage regulation signal, a first terminal receiving the first voltage regulation signal and a second terminal coupled with a second node,
- a seventh switch, comprising a control terminal coupled with the first node, a first terminal coupled with the second node and a second terminal coupled the lower voltage source,
- an eighth switch, comprising a control terminal receiving a second voltage regulation signal, a first terminal coupled with the second node and a second terminal coupled with the lower voltage source,
- a ninth switch, comprising a control terminal coupled with the second node, a first terminal coupled with the first node and a second terminal coupled with the lower voltage source, and
- a tenth switch, comprising a control terminal coupled with the second node, a first terminal coupled with the second terminal of the fifth switch and a second terminal coupled with the lower voltage source;
- and
- a second voltage regulator circuit, comprising:
- an eleventh switch, comprising a control terminal receiving the second voltage regulation signal, a first terminal receiving the second voltage regulation signal and a second terminal coupled with a third node,
- a twelfth switch, comprising a control terminal coupled with the first node, a first terminal coupled with the third node and a second terminal coupled with the low voltage source,
- a thirteenth switch, comprising a control terminal receiving the first voltage regulation signal, a first terminal coupled with the third node and a second terminal coupled with the low voltage source,
- a fourteenth switch, comprising a control terminal coupled with the third node, a first terminal coupled with the first node and a second terminal coupled with the low voltage source, and
- a fifteenth switch, comprising a control terminal coupled with the third node, a first terminal coupled with the second terminal of the fifth switch and a second terminal coupled with the low voltage source.
17 more elements
Dependencies are inferred from the claim text.