Display device and method for driving same
US11308881B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Sep 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present application discloses a current-driven display device capable of preventing a decrease in display quality due to luminance gradient or the like caused by a voltage drop in a power supply line while preventing an increase in circuit and processing necessary for driving a pixel circuit. In an organic EL display device, at a connection point of a high-level power supply line ELVDD with a pixel circuit 15 (Pix(n,k)) (n=1 to N; k=1 to M) on each branch wire ELVk, a display control circuit calculates a voltage drop ΔVn=V0−Vn caused by a current flowing in the branch wire ELVk in a data write period for the pixel circuit Pix(n,k), corrects corresponding pixel data (pixel data for Pix(n,k)) dn in input image data based on the voltage drop ΔVn, and generates a driving image data signal Sdda to be given to a data-side drive circuit based on the corrected pixel data dcn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.