Patent ID: 11881854
Assignee: UPI SEMICONDUCTOR CORP.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A level shifter circuit of a driving device, configured to convert a high-voltage signal into a low-voltage signal, the level shifter circuit comprising:
a first pulse generator providing a first input signal according to the high-voltage signal, wherein the first input signal comprises a pulse signal having a first current level and a sustain signal following the pulse signal and having a second current level, and the first current level is higher than the second current level;
a first level shifter coupled to the first pulse generator, and receiving the first input signal to generate a first indication signal;
a second pulse generator providing a second input signal according to the high-voltage signal, wherein the second input signal comprises the pulse signal and the sustain signal following the pulse signal;
a second level shifter coupled to the second pulse generator, and receiving the second input signal to generate a second indication signal; and
a determination circuit coupled to the first level shifter and the second level shifter, and generating the low-voltage signal according to the first indication signal and the second indication signal,
wherein the sustain signal of the first input signal is cut off according to a falling edge of the high-voltage signal, and the sustain signal of the second input signal is cut off according to a rising edge of the high-voltage signal.