Analogy voltage source circuit and display apparatus
US9711101B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 27, 2014 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An analogy voltage source circuit and a display apparatus. The circuit comprises: a voltage input terminal, a DC-DC converting circuit, a voltage output terminal, a duty ratio control circuit and an output voltage sampling circuit, wherein the output voltage sampling circuit is configured to feed back magnitude of an output voltage to the duty ratio control circuit, and the duty ratio control circuit is configured to control the magnitude of the output voltage of the DC-DC converting circuit according to the feedback of the output voltage sampling circuit. The circuit further comprises: a voltage regulating circuit having an input terminal for inputting a voltage regulating signal and an output terminal connected to the output voltage sampling circuit. The voltage regulating circuit controls to increase or decrease the feedback of the output voltage sampling circuit according to the voltage regulating signal, such that the output voltage from the voltage output terminal increases or decreases. The analogy voltage source circuit and the display apparatus of the present disclosure are capable of regulating the voltage output from the analogy voltage source on a liquid crystal panel, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.