公开(公告)号：WO2014113389A3

公开(公告)日：2014-10-16

申请号：PCT/US2014011488

申请日：2014-01-14

Applicant: APPLE INC

Inventor： GUPTA VASUDHA

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/0216 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/045

Abstract: A pixel driving circuit includes a storage capacitor, a first, a second, and a third transistor. A method for driving an organic light emitting diode (OLED) display includes controlling the second transistor by a first signal from a gate line such that the second transistor is switched "Off" for a first phase, and "On" for a second phase and a third phase, "Off" for a fourth phase. During the second phase, storing a threshold voltage of the first transistor on the storage capacitor coupled between the gate and the source of the first transistor. During the third phase, supplying a data voltage from a data line to the gate of the first transistor, and switching off the third transistor by a second signal such that the voltage at an anode of the OLED does not vary with pixel location and provides brightness uniformity for the display.

Abstract translation: 像素驱动电路包括存储电容器，第一，第二和第三晶体管。 用于驱动有机发光二极管（OLED）显示器的方法包括通过来自栅极线的第一信号来控制第二晶体管，使得第二晶体管在第一阶段被切换为“关”，而在第二阶段被切换为“开”，以及 第三阶段，“关”第四阶段。 在第二阶段期间，将第一晶体管的阈值电压存储在耦合在第一晶体管的栅极和源极之间的存储电容器中。 在第三阶段期间，从数据线向第一晶体管的栅极提供数据电压，并且通过第二信号关断第三晶体管，使得OLED的阳极处的电压不随像素位置而变化并且提供亮度 显示器的一致性。