公开(公告)号：US20180053468A1

公开(公告)日：2018-02-22

申请号：US15799091

申请日：2017-10-31

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi YAMASHITA ,  Tetsuro YAMAMOTO

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3258 ,  G09G3/3426 ,  G09G3/36 ,  G09G3/3648 ,  G09G2300/043 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  H05B33/0896

Abstract: A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.

公开(公告)号：US20170229067A1

公开(公告)日：2017-08-10

申请号：US15581518

申请日：2017-04-28

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi YAMASHITA ,  Tetsuro YAMAMOTO

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3258 ,  G09G3/3426 ,  G09G3/36 ,  G09G3/3648 ,  G09G2300/043 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  H05B33/0896

Abstract: A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.