Level shifter and panel display using the same
AssigneeSamsung SDI Co., Ltd.
InventorDong-Yong Shin
Life of this patent
Estimating the term…
Abstract
A level shifter and flat panel display using the level shifter. The level shifter for receiving an input signal alternately having first and second-level voltages, and for generating third and fourth-level voltages according to the first and the second-level voltages includes a first transistor coupled between a first power source and an output terminal, a second transistor coupled between the output terminal and a second power source, a capacitor coupled between the first transistor and a gate of the second transistor, and a switch for applying a voltage corresponding to the first-level voltage to the gate of the first transistor and for blocking the input signal to the gate of the first transistor.
Claims26
A level shifter for receiving an input signal alternately having a first-level voltage and a second-level voltage, and for generating a third-level voltage and a fourth-level voltage according to the first-level voltage and the second-level voltage, comprising:
- a first transistor coupled between a first power source and an output terminal;
- a second transistor coupled between the output terminal and a second power source, in which an inverted signal of the input signal is applied to a gate;
- a capacitor coupled between the first transistor and the gate of the second transistor;
- and
- a switch for applying a voltage corresponding to the first-level voltage to the gate of the first transistor by responding to the first-level voltage, and for blocking the gate of the first transistor from the input signal by responding to the second-level voltage.
A level shifter for receiving an input signal alternately having a first-level voltage and a second-level voltage, and for generating a third-level voltage and a fourth-level voltage according to the first-level voltage and the second-level voltage, comprising:
- a first transistor coupled between a first power source and an output terminal, in which an inverted signal of the input signal is applied to a gate;
- a second transistor coupled between the output terminal and a second power source;
- a capacitor coupled between the first transistor and the gate of the second transistor;
- and
- a switch for blocking the input signal to the gate of the second transistor by responding to the first-level voltage, and for applying a voltage corresponding to the second-level voltage to the gate of the second transistor by responding to the second-level voltage.
A level shifter for receiving an input signal alternately having a first-level voltage and a second-level voltage, and for generating a third-level voltage and a fourth-level voltage according to the first-level voltage and the second-level voltage, comprising:
- a first transistor coupled between a first power source and an output terminal;
- a second transistor coupled between the output terminal and a second power source, in which the input signal is applied to a gate;
- a capacitor coupled between the first transistor and the gate of the second transistor;
- and
- a switch coupled between a third power source and the gate of the first transistor, for applying a voltage corresponding to the voltage of the third power source to the gate of the first transistor in a period when the input signal is the first-level voltage, and for blocking the third power source to the gate of the first transistor in a period when the input signal is the second-level voltage.
Dependencies are inferred from the claim text.