公开(公告)号：US20180261156A1

公开(公告)日：2018-09-13

申请号：US15966679

申请日：2018-04-30

Applicant: Sony Corporation

Inventor： Junichi YAMASHITA ,  Yusuke ONOYAMA ,  Tetsuo MINAMI ,  Naobumi TOYOMURA ,  Tetsuro YAMAMOTO ,  Katsuhide UCHINO

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/3283 ,  H01L27/06 ,  G09G3/3225 ,  G09G3/30

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  H01L27/0688 ,  H01L27/3225 ,  H01L27/3244 ,  H01L27/3248 ,  H01L27/3255 ,  H01L27/3262 ,  H01L27/3276

Abstract: A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.

公开(公告)号：US20180254007A1

公开(公告)日：2018-09-06

申请号：US15971661

申请日：2018-05-04

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 ,  G09G2310/0256 ,  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：US20130321250A1

公开(公告)日：2013-12-05

申请号：US13960172

申请日：2013-08-06

Applicant: SONY CORPORATION

Inventor： Katsuhide UCHINO ,  Junichi YAMASHITA ,  Tetsuro YAMAMOTO

IPC: G09G3/32

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, wherein a source of a TFT 111 as a drive transistor is connected to an anode of a light emitting element 114, a drain is connected to a power source potential VCC, a capacitor C111 is connected between a gate and source of the TFT 111, and a source potential of the TFT 111 is connected to a fixed potential through a TFT 113 as a switching transistor.

Abstract translation: 一种像素电路，显示装置和驱动像素电路的方法，即使随着发光元件的电流 - 电压特性的改变，也能够随着亮度的降低而使源极跟随器输出不发生劣化，从而能够使源极跟随器电路 n沟道晶体管，并且能够使用n沟道晶体管作为EL驱动晶体管，同时使用电流阳极 - 阴极电极，其中作为驱动晶体管的TFT 111的源极连接到发光元件114的阳极， 漏极连接到电源电位VCC，电容器C111连接在TFT 111的栅极和源极之间，TFT 111的源极电位通过作为开关晶体管的TFT 113连接到固定电位。