公开(公告)号：EP1903551A1

公开(公告)日：2008-03-26

申请号：EP06254952.2

申请日：2006-09-25

Applicant: TPO Displays Corp.

Inventor： Chang, Ting-Kuo ,  Lin, Ching-Wei

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/043 ,  H01L27/12 ,  H01L27/1214 ,  H01L29/78615

Abstract: A pixel driving circuit for OLED display apparatus is provided. The pixel driving circuit is adapted to drive an OLED having a first terminal and a second terminal, while the first terminal couples to a first voltage source. The pixel driving circuit comprises a control circuit, a driving transistor and a connection between the channel of the driving transistor and a second voltage source. The control circuit generates a control signal to control an OLED current supplied to the OLED. The driving transistor has a first drain/source terminal, a second drain/source terminal and a gate terminal. The gate terminal receives the control signal to control a channel between the first and second drain/source terminal for adjusting the OLED current flowing through the channel.

Abstract translation: 提供了用于OLED显示装置的像素驱动电路。 像素驱动电路适于驱动具有第一端子和第二端子的OLED，而第一端子耦合到第一电压源。 像素驱动电路包括控制电路，驱动晶体管和驱动晶体管的沟道与第二电压源之间的连接。 控制电路产生控制信号以控制提供给OLED的OLED电流。 驱动晶体管具有第一漏极/源极端子，第二漏极/源极端子和栅极端子。 栅极端子接收控制信号以控制第一和第二漏极/源极端子之间的通道，用于调节流过通道的OLED电流。