Display apparatus and voltage calibration method
US10650736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2019 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0693
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display apparatus and a voltage calibration method are disclosed. The display apparatus includes a ramp voltage generator, a ramp counter and a timing controller. The ramp voltage generator is configured to generate a ramp voltage. The ramp counter is coupled to the ramp voltage generator and configured to start counting when the ramp voltage generator generates the ramp voltage. The timing controller is coupled to the ramp voltage generator and the ramp counter respectively. When the ramp voltage is increased to be equal to a reference voltage, the timing controller compares an instant count value of the ramp counter with a default value and selectively calibrates a rising slope of the ramp voltage generated by the ramp voltage generator according to a comparing result of the instant count value and the default value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.