Display device and method of controlling power integrated circuit
US10134337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Dec 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are a display device and a method of controlling a power integrated circuit (PIC) thereof. The display device in one embodiment includes a controller for generating a switch pulse signal synchronized with an input image and initializing the switch pulse signal during a frame blank period in which the input image is not present; and a power integrated circuit (PIC) driven according to the switch pulse signal to generate power of a display panel. A duty ratio of the switch pulse signal is aligned to be greater than 0 and equal to or less than 3% during an alignment period set within a frame blank period, compared with a normal period. Thus, a change in the duty ratio of the switch pulse signal within the frame blank period is controlled to be minimized to prevent a degradation of image quality due to the variation of power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.