Patent ID: 9099033
Filing Date: 2015-08-04
Classification: G09G

Abstract:
1. A method of driving an organic electroluminescent display apparatus, comprising: detecting a voltage of a battery that supplies power to the organic electroluminescent display apparatus; detecting a brightness of ambient light; detecting a temperature of the organic electroluminescent display apparatus; and controlling a brightness of the organic electroluminescent display apparatus and a voltage difference between a first power voltage and a second power voltage that are supplied to pixels of the organic electroluminescent display apparatus, wherein the brightness and the power voltage difference are controlled according to a pulsed power voltage control signal based on the battery voltage, the brightness of the ambient light, the temperature, and image data of the organic electroluminescent display apparatus, wherein the controlling the brightness and the power voltage difference comprises: determining a pulsed voltage-based automatic brightness control (VABC) brightness control signal according to the battery voltage; determining a pulsed light-based automatic brightness control (LABC) brightness control signal according to the brightness of the ambient light; determining a pulsed automatic current limit (ACL) brightness control signal according to the image data; generating the pulsed power voltage control signal to control the power voltage difference by adding the pulsed VABC brightness control signal, the pulsed LABC brightness control signal, the pulsed ACL brightness control signal, and a pulsed control signal determined by the temperature; and controlling the power voltage difference and the brightness of the organic electroluminescent display apparatus according to the pulsed power voltage control signal, wherein the generating the pulsed power voltage control signal includes applying different weights to the pulsed VABC brightness control signal, the pulsed LABC brightness control signal, the pulsed ACL brightness control signal, and the pulsed control signal determined by the temperature and linearly combining the pulsed VABC brightness control signal, the pulsed LABC brightness control signal, the pulsed ACL brightness control signal, and the pulsed control signal determined by the temperature according to the applied weights to generate the pulsed power voltage control signal.