Multi-function circuit module having voltage level shifting function and data latching function
First Claim
1. A multi-function circuit module having voltage level shifting function and data latching function, the multi-function circuit module comprising:
- a first circuit module, comprising;
a first switch module, for selectively coupling a first voltage source to a first node or a second node;
a second switch module, for selectively coupling a third node to the first node or the second node; and
a third switch module, for receiving at least an input signal and selectively coupling a fourth node to the first node or the second node;
a fourth switch module, coupled between the fourth node and a second voltage source, for receiving a first control signal and selectively conducting the fourth node and the second voltage source according to the first control signal, wherein when the fourth switch module conducts the fourth node and the second voltage source, the first switch module, the third switch module, and the fourth switch module act as a voltage level shifting circuit to respectively adjust voltage levels of the first node and/or the second node, so as to generate at least an output signal; and
a fifth switch module, coupled between the third node and the second voltage source, for receiving a second control signal and selectively conducting the third node and the second voltage source according to the second control signal, wherein when the fifth switch module conducts the third node and the second voltage source, the first switch module, the second switch module, and the fifth switch module act as a data latching circuit to latch the voltage levels of the first node and the second node.
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Abstract
The present invention discloses a multi-function circuit module having voltage level shifting function and data latching function via switching a plurality of switch elements. The multi-function circuit module includes a first circuit module, a fourth switch element, and a fifth switch module, wherein the first circuit module further includes a first switch module, a second switch module, and a third switch module. The multi-function circuit module can substantially reduce the circuit layout area. For example, when the multi-function circuit module of the present invention is applied in a source driving chip circuit, the multi-function circuit module can replace the original low-to-high voltage level shifting circuit and data latching circuit, so as to attain the purpose of reducing the chip area.
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Citations
18 Claims
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1. A multi-function circuit module having voltage level shifting function and data latching function, the multi-function circuit module comprising:
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a first circuit module, comprising; a first switch module, for selectively coupling a first voltage source to a first node or a second node; a second switch module, for selectively coupling a third node to the first node or the second node; and a third switch module, for receiving at least an input signal and selectively coupling a fourth node to the first node or the second node; a fourth switch module, coupled between the fourth node and a second voltage source, for receiving a first control signal and selectively conducting the fourth node and the second voltage source according to the first control signal, wherein when the fourth switch module conducts the fourth node and the second voltage source, the first switch module, the third switch module, and the fourth switch module act as a voltage level shifting circuit to respectively adjust voltage levels of the first node and/or the second node, so as to generate at least an output signal; and a fifth switch module, coupled between the third node and the second voltage source, for receiving a second control signal and selectively conducting the third node and the second voltage source according to the second control signal, wherein when the fifth switch module conducts the third node and the second voltage source, the first switch module, the second switch module, and the fifth switch module act as a data latching circuit to latch the voltage levels of the first node and the second node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification