Power source circuit having a protector to control an operation of a voltage generator and display apparatus having the same
US8736593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2010 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Nov 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A power source circuit of a display apparatus includes a voltage divider, an operational amplifier, a first switch, a second switch, and a protector. The voltage divider generates a divided voltage between a first driving voltage and a ground voltage. The operational amplifier receives the divided voltage and outputs the divided voltage as a second driving voltage. The first switch is connected between a first supply voltage terminal to receive the first driving voltage and a common node. The second switch is connected between the common node and a second supply voltage terminal to receive the ground voltage. The protector is connected to the common node to limit a voltage output of the first supply voltage terminal in response to a voltage of the common node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.