公开(公告)号：US20230292551A1

公开(公告)日：2023-09-14

申请号：US18176503

申请日：2023-03-01

Applicant: Japan Display Inc.

Inventor： Masashi TSUBUKU ,  Takeshi SAKAI ,  Kentaro MIURA ,  Hajime WATAKABE ,  Takaya TAMARU ,  Hiroshi TABATAKE ,  Yutaka UMEDA

IPC: H10K59/121

CPC classification number: H10K59/1213 ,  H01L27/1255

Abstract: A display device includes a light-emitting element; a first transistor and a second transistor connected in series between the light-emitting element and a driving power line; a third transistor electrically connected to a gate electrode of the first transistor; and a fourth transistor connected in parallel between a drain electrode of the first transistor and the light-emitting element, wherein a ratio of a channel width W1 to a channel length L1 of the first transistor (a W1/L1 ratio) and a ratio of a channel width W2 to a channel length L2 of the second transistor (a W2/L2 ratio) are larger than a ratio of a channel width W3 to a channel length L3 of the third transistor (a W3/L3 ratio) and a ratio of a channel width W4 to a channel length L4 of the fourth transistor (a W4/L4 ratio).

公开(公告)号：US20190004658A1

公开(公告)日：2019-01-03

申请号：US16128018

申请日：2018-09-11

Applicant: JAPAN DISPLAY INC.

Inventor： Yoshiro AOKI ,  Takashi NAKAMURA ,  Masahiro TADA ,  Hirotaka HAYASHI ,  Makoto SHIBUSAWA ,  Yutaka UMEDA ,  Miyuki ISHIKAWA

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047 ,  H01L27/32 ,  H01L51/52 ,  G02F1/1333

Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.

公开(公告)号：US20240331627A1

公开(公告)日：2024-10-03

申请号：US18619597

申请日：2024-03-28

Applicant: Japan Display Inc.

Inventor： Yukio TANAKA ,  Tetsuo MORITA ,  Yutaka UMEDA

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2360/16

Abstract: An EL display device is controlled to emit light so as to effectively reduce a flicker even when low-frequency driving is used at any frequency. In a light emission control method of the EL display device including a plurality of regularly arranged light emitting elements, one or more non-light emission periods, in which the light emitting element does not emit, are inserted in one emission cycle of the light emitting element. In a luminance change of the light emitting element at the emission cycle of T≡2π/ω, l is a largest natural number with respect to a threshold frequency ωth/2π0 to satisfy lω≤ωth, the following holds:






∑

n
=
1

l




❘
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c
n


❘
"\[RightBracketingBar]"


2


≦


1
2

⁢


∑

n
=
1

∞




❘
"\[LeftBracketingBar]"


c
n


❘
"\[RightBracketingBar]"


2







where n is an integer and cn is a complex Fourier coefficient of luminance L(t) of the light emitting element in a section 0≤t

公开(公告)号：US20220350434A1

公开(公告)日：2022-11-03

申请号：US17863802

申请日：2022-07-13

Applicant: Japan Display Inc.

Inventor： Yoshiro AOKI ,  Takashi NAKAMURA ,  Masahiro TADA ,  Hirotaka HAYASHI ,  Makoto SHIBUSAWA ,  Yutaka UMEDA ,  Miyuki ISHIKAWA

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  G06F3/047 ,  H01L27/32 ,  H01L51/52

Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.

公开(公告)号：US20230273695A1

公开(公告)日：2023-08-31

申请号：US18314328

申请日：2023-05-09

Applicant: Japan Display Inc.

Inventor： Yoshiro AOKI ,  Takashi NAKAMURA ,  Masahiro TADA ,  Hirotaka HAYASHI ,  Makoto SHIBUSAWA ,  Yutaka UMEDA ,  Miyuki ISHIKAWA

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  H10K50/84 ,  H10K50/844 ,  H10K59/40 ,  G06F3/047

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/04166 ,  G06F3/0446 ,  H10K50/84 ,  H10K50/841 ,  H10K50/844 ,  H10K59/40 ,  G06F3/047 ,  G06F2203/04103 ,  G06F2203/04112 ,  G06F2203/04107 ,  G06F2203/04111

Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.

公开(公告)号：US20160232841A1

公开(公告)日：2016-08-11

申请号：US15016011

申请日：2016-02-04

Applicant: Japan Display Inc.

Inventor： Yutaka UMEDA ,  Duzen PENG ,  Ilin WU ,  Makoto SHIBUSAWA ,  Hiroyuki KIMURA

IPC: G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0254 ,  G09G2320/0214

Abstract: A method of driving a display device with a plurality of pixels including a video signal wire, a first power supply wire supplied with a first potential, a second power supply wire supplied with a second potential different to the first potential, a light emitting element arranged between the first power supply wire and the second power supply wire, a drive transistor controlling a value of a current supplied to the light emitting element, and a switch arranged between the video signal wire and the drive transistor, and inputting a signal of the video signal wire to a gate terminal of the drive transistor, wherein a minimum gradation level potential is supplied to the video signal wire after a video signal is written to the capacitor of an Nth row pixel until a video signal is written to the capacitor of an Mth (N

Abstract translation: 一种驱动具有多个像素的显示装置的方法，所述多个像素包括视频信号线，提供有第一电位的第一电源线，提供有与第一电位不同的第二电位的第二电源线;布置 在第一电源线和第二电源线之间，控制提供给发光元件的电流值的驱动晶体管和布置在视频信号线和驱动晶体管之间的开关，以及输入视频信号 信号线连接到驱动晶体管的栅极端子，其中在将视频信号写入第N行像素的电容器之后，将最小灰度级电位提供给视频信号线，直到视频信号被写入第M个电容器 （N

公开(公告)号：US20190228706A1

公开(公告)日：2019-07-25

申请号：US16248077

申请日：2019-01-15

Applicant: Japan Display Inc.

Inventor： Yutaka UMEDA ,  Hiroyuki KIMURA ,  Makoto SHIBUSAWA ,  Tetsuo MORITA

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  H01L27/32

Abstract: A display device includes a drive transistor having a first electrode connected to a first node, a second electrode connected to a second node, and a third electrode connected to a third node, a first switch having one terminal connected to the first node, a second switch having one terminal connected to the first node, a third switch controlled by a first control signal and having one terminal connected to the second node, a fourth switch controlled by the first control signal together with the third switch, and having one terminal connected to a power supply line and another terminal connected to the third node, a capacitor element having one terminal connected to the first node and another terminal connected to the second node, and a light emitting element including a pixel electrode connected to the second node, and a first common electrode.

公开(公告)号：US20160104761A1

公开(公告)日：2016-04-14

申请号：US14882093

申请日：2015-10-13

Applicant: Japan Display Inc.

Inventor： Hiroshi TABATAKE ,  Hiroyuki KIMURA ,  Makoto SHIBUSAWA ,  Hiroshi NAKAYAMA ,  Tetsuo MORITA ,  Yutaka UMEDA

IPC: H01L27/32

CPC classification number: H01L27/1214 ,  H01L27/124 ,  H01L27/326 ,  H01L27/3272

Abstract: A display device includes a display region comprising a plurality of pixels, each pixel of the plurality of pixels comprises a light emitting element which includes a pixel electrode, a conductive layer below the pixel electrode and configured to receive a specified electric voltage, and a thin film transistor below the pixel electrode and the conductive layer, wherein the thin film transistor comprises a semiconductor layer which includes a channel region, a gate electrode which is overlapping the channel region, a first electrode electrically connected to the semiconductor layer and the pixel electrode, and a second electrode electrically connectable to a power supply line, wherein the conductive layer includes an overlapped region which overlaps with the channel region, and the first electrode extends so as to cover the gate electrode at the overlapped region.

Abstract translation: 显示装置包括包括多个像素的显示区域，所述多个像素的每个像素包括发光元件，所述发光元件包括像素电极，所述像素电极下方的导电层，并且被配置为接收指定的电压， 薄膜晶体管，其中薄膜晶体管包括半导体层，其包括沟道区，与沟道区重叠的栅电极，与半导体层电连接的第一电极和像素电极， 以及电连接到电源线的第二电极，其中所述导电层包括与所述沟道区重叠的重叠区域，并且所述第一电极延伸以覆盖所述重叠区域处的所述栅电极。

公开(公告)号：US20150097810A1

公开(公告)日：2015-04-09

申请号：US14505880

申请日：2014-10-03

Applicant: Japan Display Inc.

Inventor： Yoshiro AOKI ,  Takashi NAKAMURA ,  Masahiro TADA ,  Hirotaka HAYASHI ,  Makoto SHIBUSAWA ,  Yutaka UMEDA ,  Miyuki ISHIKAWA

IPC: G06F3/044

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/047 ,  G06F2203/04103 ,  G06F2203/04107 ,  G06F2203/04111 ,  G06F2203/04112 ,  H01L27/323 ,  H01L51/5237 ,  H01L51/524 ,  H01L51/5253

Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.

Abstract translation: 根据一个实施例，一种横向电场液晶显示装置包括：发光显示层，包括OLED;以及控制OLED的发光的驱动电路，设置在层叠在发光显示层上的防潮膜 为了防止水分渗入发光显示层，与不透湿膜分开设置并使来自发光显示区域的光进行光学处理的光学基板，用作触摸电极的一个电极组的第一触摸电极组 并且设置在光学基板的背面上，形成为层叠在不透湿膜上的引出电极组，提取电极组和光学基板在平面图中具有重叠部分，并且第一触摸电极组的电极 以重叠的标准电连接到引出电极组的电极 t。

公开(公告)号：US20240248557A1

公开(公告)日：2024-07-25

申请号：US18621718

申请日：2024-03-29

Applicant: Japan Display Inc.

Inventor： Yoshiro AOKI ,  Takashi NAKAMURA ,  Masahiro TADA ,  Hirotaka HAYASHI ,  Makoto SHIBUSAWA ,  Yutaka UMEDA ,  Miyuki ISHIKAWA

IPC: G06F3/041 ,  G02F1/1333 ,  G06F3/044 ,  G06F3/047 ,  H10K50/84 ,  H10K50/844 ,  H10K59/40

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/04166 ,  G06F3/0446 ,  G06F3/047 ,  H10K50/84 ,  H10K50/841 ,  H10K50/844 ,  H10K59/40 ,  G06F2203/04103 ,  G06F2203/04107 ,  G06F2203/04111 ,  G06F2203/04112

Abstract: According to one embodiment, a lateral-electric-field liquid crystal display device includes a light-emitting display layer including OLEDs and a driving circuit controlling light emission of the OLEDs, a moisture impermeable film provided to be laminated on the light-emitting display layer to prevent infiltration of moisture into the light-emitting display layer, an optical substrate provided separately from the moisture impermeable film and subjecting light from the light-emitting display region to optical processing, a first touch electrode group serving as one electrode group of touch electrodes and provided on a back surface of the optical substrate, and an extraction electrode group formed to be laminated on the moisture impermeable film, the extraction electrode group and the optical substrate have an overlapping part in plan view, and electrodes of the first touch electrode group being electrically connected to electrodes of the extraction electrode group in the overlapping part.