公开(公告)号：US20210345467A1

公开(公告)日：2021-11-04

申请号：US17286695

申请日：2019-10-23

申请人： CCS Inc.

发明人： Hidekazu TAKAGI

IPC分类号： H05B45/00 ,  H05B45/325

摘要： An OLED driving device includes an overdrive controller (ODC) which executes an overdrive of applying to an OLED an electric current larger than a rated electric current for the OLED for a predetermined period (period for the overdrive) to cause the OLED to emit brighter light for the predetermined period than at the rated electric current for the OLED for light emitting. The controller (ODC) executes a PWM control to the electric current flowing to the OLED for the predetermined period, and sets a PWM signal in the predetermined period so that at least one pulse of a pulse before the OLED starts the light emitting and a pulse at a just time when the OLED starts the light emitting has a width larger than a width of a pulse after the OLED starts the light emitting.