Programming circuit with feedback circuit
AssigneesInnocom Technology (Shenzhen) Co., Ltd., Innolux Display Corp.
InventorWei Zhou
Life of this patent
Estimating the term…
Abstract
An exemplary programming circuit (40) includes an input terminal (42) configured for receiving an external high voltage signal, a driving circuit (20), a switch circuit (43) connected between the input terminal and the driving circuit, and a feedback circuit (45). When the external high voltage signal is larger than a normal value thereof, the feedback circuit outputs a first control signal to turn off the switch circuit. When the external high voltage signal is less than the normal value thereof, the feedback circuit also outputs the first control signal to turn off the switch circuit. When the external high voltage signal is equal to the normal value thereof, the feedback circuit outputs a second control signal to turn on the switch circuit.
Claims19
A programming circuit, comprising:
- an input terminal configured for receiving an external high voltage signal;
- a driving circuit comprising an electric source input terminal;
- a switch circuit connected between the input terminal and the electric source input terminal of the driving circuit;
- and
- a feedback circuit comprising a control circuit and a comparing circuit comprising a first input terminal, a second input terminal, and an output terminal;
- wherein the control circuit is connected between the switch circuit and the output terminal of the comparing circuit, the first input terminal of the comparing circuit is connected to the electric source input terminal of the driving circuit, and the second input terminal is connected to a reference voltage source;
- the comparing circuit compares a voltage of the first input terminal and the reference voltage of the second input terminal, and outputs a signal to the control circuit;
- the control circuit correspondingly outputs a control signal to turn on or turn off the switch circuit;
- when the voltage of the first input terminal of the comparing circuit is equal to the reference voltage, the switch circuit is turned on;
- when the voltage of the first input terminal of the comparing circuit is larger than the reference voltage, the switch circuit is turned off;
- and when the voltage of the first input terminal of comparing circuit is less than the reference voltage, the switch circuit is turned off.
A programming circuit, comprising:
- an input terminal configured for receiving an external high voltage signal;
- a driving circuit;
- a switch circuit connected between the input terminal of the programming circuit and the driving circuit;
- and
- a feedback circuit;
- wherein when the external high voltage signal is larger than a normal value thereof, the feedback circuit outputs a first control signal to turn off the switch circuit;
- when the external high voltage signal is less than the normal value thereof, the feedback circuit also outputs the first control signal to turn off the switch circuit;
- and when the external high voltage signal is equal to the normal value thereof, the feedback circuit outputs a second control signal to turn on the switch circuit.
Dependencies are inferred from the claim text.