Display device having power management circuit
US11170729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2020 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A power management circuit of a display device includes a voltage information storage comprising a first and second bank storing first and second voltage information corresponding to first and second voltage levels different from each other, a bank select pin receiving a bank select signal, a voltage information selecting circuit selectively outputting the first voltage information stored in the first bank or the second voltage information stored in the second bank in response to the bank select signal received through the bank select pin, and a DC-DC converter generating panel driving voltages having the first voltage levels based on the first voltage information when the first voltage information is output from the voltage information selecting circuit, and generating the panel driving voltages having the second voltage levels based on the second voltage information when the second voltage information is output from the voltage information selecting circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.