Signal amplifier circuit load drive circuit and liquid crystal display device
US6603456B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1999 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Nov 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A differential voltage between the threshold voltage of an amplitude amplifying logic circuit 20 and a reference voltage V1 is stored in a capacitor C1. When an input signal IS is input to the amplitude amplifying logic circuit 20, it is input after adding to the voltage of the input signal IS the voltage stored in the capacitor C1. In this manner, any difference between the threshold voltage V1 of the amplitude amplifying logic circuit 20 and the reference voltage can be absorbed. Therefore, a signal amplifier circuit can operate normally even when the threshold voltage of the amplitude amplifying logic circuit 20 in the signal amplifier circuit varies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.