公开(公告)号：US20210118364A1

公开(公告)日：2021-04-22

申请号：US17136845

申请日：2020-12-29

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi YAMASHITA ,  Tetsuro YAMAMOTO

IPC: G09G3/3233 ,  H05B45/00 ,  G09G3/30 ,  G09G3/34 ,  G09G3/36 ,  G09G3/3258

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：US20180158412A1

公开(公告)日：2018-06-07

申请号：US15888530

申请日：2018-02-05

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi Yamashita ,  Tetsuro Yamamoto

IPC: G09G3/3233 ,  G09G3/3208 ,  G09G3/3266 ,  G09G3/30

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3208 ,  G09G3/3266 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/043 ,  G09G2330/028

Abstract: A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain 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 serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.

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.

公开(公告)号：US20150302800A1

公开(公告)日：2015-10-22

申请号：US14789611

申请日：2015-07-01

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Juichi Yamashita ,  Tetsuro Yamamoto

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3208 ,  G09G3/3266 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/043 ,  G09G2330/028

Abstract: A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain 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 serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.

Abstract translation: 一种像素电路，其能够防止驱动晶体管在面板内部的端子电压的扩展，从而能够可靠地防止均匀性的劣化，其中用作驱动晶体管的TFT的源极连接到发光元件的阳极 漏极连接到电源电位，电容器连接在TFT的栅极和源极之间，TFT的源极电位通过用作开关晶体管的TFT连接到固定电位，并且其中像素电路线 通过上线和底线连接并且与像素电路电源电压线并联布置，以便不具有相交部分。

公开(公告)号：US20140327665A1

公开(公告)日：2014-11-06

申请号：US14331951

申请日：2014-07-15

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.

公开(公告)号：US20170148386A1

公开(公告)日：2017-05-25

申请号：US15427800

申请日：2017-02-08

Applicant: SONY CORPORATION

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

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

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：US20170110053A1

公开(公告)日：2017-04-20

申请号：US15391248

申请日：2016-12-27

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi YAMASHITA ,  Tetsuro YAMAMOTO

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3208 ,  G09G3/3266 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/043 ,  G09G2330/028

Abstract: A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain 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 serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.

公开(公告)号：US20150103061A1

公开(公告)日：2015-04-16

申请号：US14571966

申请日：2014-12-16

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi YAMASHITA ,  Tetsuro YAMAMOTO

IPC: G09G3/30

CPC classification number: G09G3/3233 ,  G09G3/30 ,  G09G3/3208 ,  G09G3/3266 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/043 ,  G09G2330/028

Abstract: A pixel circuit able to prevent a spread of the terminal voltages of drive transistors inside a panel and in turn able to reliably prevent deterioration of uniformity, wherein a source of a TFT serving as a drive transistor is connected to an anode of a light emitting element, a drain 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 serving as a switch transistor and wherein pixel circuit lines are connected by an upper line and bottom line and are arranged in parallel with pixel circuit power source voltage lines so as not to have intersecting parts.

公开(公告)号：US20130321383A1

公开(公告)日：2013-12-05

申请号：US13960229

申请日：2013-08-06

Applicant: Sony Corporation

Inventor： Katsuhide UCHINO ,  Junichi Yamashita ,  Tetsuro Yamamoto

IPC: G09G3/30

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.