公开(公告)号：US20240113130A1

公开(公告)日：2024-04-04

申请号：US18526407

申请日：2023-12-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Hiroyuki MIYAKE ,  Hideaki SHISHIDO ,  Jun KOYAMA

IPC: H01L27/12 ,  H01L29/786

CPC classification number: H01L27/1225 ,  H01L27/1255 ,  H01L29/7869

Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode. The second light-transmitting conductive film is formed over the same surface as the light-transmitting semiconductor film of the transistor and is a metal oxide film containing a dopant.

公开(公告)号：US20240094575A1

公开(公告)日：2024-03-21

申请号：US18524248

申请日：2023-11-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideaki SHISHIDO ,  Daisuke KUBOTA ,  Yusuke KUBOTA

IPC: G02F1/1333 ,  G06F3/041

CPC classification number: G02F1/13338 ,  G06F3/0412 ,  G06F2203/04103

Abstract: To provide a thin touch panel, a touch panel having a simple structure, a touch panel which can be easily incorporated into an electronic device, or a touch panel with a small number of components. The touch panel includes pixel electrodes arranged in a matrix, a plurality of signal lines, a plurality of scan lines, a plurality of first wirings extending in a direction parallel to the signal lines, and a plurality of second wirings extending in a direction parallel to the scan line. Part of the first wiring and part of the second wiring function as a pair of electrodes included in a touch sensor. The first wiring and the second wiring each have a stripe shape or form a mesh shape and are each provided between two adjacent pixel electrodes in a plan view.

公开(公告)号：US20230079181A1

公开(公告)日：2023-03-16

申请号：US17991893

申请日：2022-11-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hisao IKEDA ,  Kouhei TOYOTAKA ,  Hideaki SHISHIDO ,  Hiroyuki MIYAKE ,  Kohei YOKOYAMA ,  Yasuhiro JINBO ,  Yoshitaka DOZEN ,  Takaaki NAGATA ,  Shinichi HIRASA

IPC: H01L27/12 ,  H01L27/32 ,  H01L29/786 ,  G09G3/20 ,  G09G3/3233

Abstract: Provided is a display device with extremely high resolution, a display device with higher display quality, a display device with improved viewing angle characteristics, or a flexible display device. Same-color subpixels are arranged in a zigzag pattern in a predetermined direction. In other words, when attention is paid to a subpixel, another two subpixels exhibiting the same color as the subpixel are preferably located upper right and lower right or upper left and lower left. Each pixel includes three subpixels arranged in an L shape. In addition, two pixels are combined so that pixel units including subpixel are arranged in matrix of 3×2.

公开(公告)号：US20220350432A1

公开(公告)日：2022-11-03

申请号：US17760603

申请日：2020-09-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Hidetomo KOBAYASHI ,  Hajime KIMURA ,  Takeshi OSADA ,  Hideaki SHISHIDO ,  Kiyotaka KIMURA ,  Shuichi KATSUI ,  Takeya HIROSE ,  Takayuki IKEDA

IPC: G06F3/041 ,  H01L51/52 ,  H01L27/12 ,  H01L51/44 ,  G09G3/3266 ,  G06F3/042 ,  G09G3/3275 ,  G09G3/3233

Abstract: To provide an inexpensive display device. The display device includes a pixel and an IC chip. The pixel includes a first pixel circuit including a display element and a second pixel circuit including a light-receiving device. The one IC chip includes a control circuit, a data driver circuit, and a read circuit. The first and second pixel circuits are electrically connected to the read circuit. The control circuit has a function of controlling driving of the data driver circuit and the read circuit. The data driver circuit has a function of supplying image data to the first pixel circuit. The read circuit has a function of outputting a monitor signal corresponding to a monitor current when the monitor current flows through the first pixel circuit. The read circuit also has a function of outputting an imaging signal corresponding to imaging data acquired by the second pixel circuit.

公开(公告)号：US20220246596A1

公开(公告)日：2022-08-04

申请号：US17619427

申请日：2020-06-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hideaki SHISHIDO ,  Koji KUSUNOKI ,  Takahiro FUKUTOME

IPC: H01L25/18 ,  H01L27/32 ,  B81B7/00

Abstract: A display device having a narrow bezel region is provided. The display device includes a first layer and a second layer. The first layer includes a source driver and one part of a sensor, and the second layer includes a gate driver, a plurality of pixels, and the other part of the sensor. The plurality of pixels include a pixel in which a light-emitting element emits light and a pixel having a function of the gate driver. An opening portion where the one part of the sensor is formed and a first terminal connected to the source driver are provided on the top surface of the first layer, and a second terminal is provided on the opposite side of the surface where the pixels included in the second layer are arranged. The first terminal is bonded to the second terminal, so that they are electrically connected to each other and the sensor is formed. Since an output signal of the source driver is directly supplied through the first terminal to a wiring to which the plurality of pixels are connected, the source driver and the gate driver do not need to be provided in a peripheral region of a display region where the plurality of pixels are provided.

公开(公告)号：US20200295199A1

公开(公告)日：2020-09-17

申请号：US16886906

申请日：2020-05-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryo ARASAWA ,  Hideaki SHISHIDO ,  Shunpei YAMAZAKI

IPC: H01L29/786 ,  G09G3/36 ,  H01L27/12 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  H01L29/24 ,  H01L29/49

Abstract: A liquid crystal display device is provided in which the aperture ratio can be increased in a pixel including a thin film transistor in which an oxide semiconductor is used. In the liquid crystal display device, the thin film transistor including a gate electrode, a gate insulating layer and an oxide semiconductor layer which are provided so as to overlap with the gate electrode, and a source electrode and a drain electrode which overlap part of the oxide semiconductor layer is provided between a signal line and a pixel electrode which are provided in a pixel portion. The off-current of the thin film transistor is 1×1013 A or less. A potential can be held only by a liquid crystal capacitor, without a capacitor which is parallel to a liquid crystal element, and a capacitor connected to the pixel electrode is not formed in the pixel portion.

公开(公告)号：US20200218106A1

公开(公告)日：2020-07-09

申请号：US16827279

申请日：2020-03-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideaki SHISHIDO ,  Daisuke KUBOTA ,  Yusuke KUBOTA

IPC: G02F1/1333 ,  G06F3/041

Abstract: To provide a thin touch panel, a touch panel having a simple structure, a touch panel which can be easily incorporated into an electronic device, or a touch panel with a small number of components. The touch panel includes pixel electrodes arranged in a matrix, a plurality of signal lines, a plurality of scan lines, a plurality of first wirings extending in a direction parallel to the signal lines, and a plurality of second wirings extending in a direction parallel to the scan line. Part of the first wiring and part of the second wiring function as a pair of electrodes included in a touch sensor. The first wiring and the second wiring each have a stripe shape or form a mesh shape and are each provided between two adjacent pixel electrodes in a plan view.

公开(公告)号：US20200185420A1

公开(公告)日：2020-06-11

申请号：US16793543

申请日：2020-02-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hisao IKEDA ,  Kouhei TOYOTAKA ,  Hideaki SHISHIDO ,  Hiroyuki MIYAKE ,  Kohei YOKOYAMA ,  Yasuhiro JINBO ,  Yoshitaka DOZEN ,  Takaaki NAGATA ,  Shinichi HIRASA

IPC: H01L27/12 ,  H01L27/32 ,  G09G3/3233 ,  G09G3/20 ,  H01L29/786

Abstract: Provided is a display device with extremely high resolution, a display device with higher display quality, a display device with improved viewing angle characteristics, or a flexible display device. Same-color subpixels are arranged in a zigzag pattern in a predetermined direction. In other words, when attention is paid to a subpixel, another two subpixels exhibiting the same color as the subpixel are preferably located upper right and lower right or upper left and lower left. Each pixel includes three subpixels arranged in an L shape. In addition, two pixels are combined so that pixel units including subpixel are arranged in matrix of 3×2.

公开(公告)号：US20190386036A1

公开(公告)日：2019-12-19

申请号：US16547723

申请日：2019-08-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hiroyuki MIYAKE ,  Hideaki SHISHIDO ,  Jun KOYAMA

IPC: H01L27/12 ,  H01L29/786

Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode. The second light-transmitting conductive film is formed over the same surface as the light-transmitting semiconductor film of the transistor and is a metal oxide film containing a dopant.

公开(公告)号：US20190355303A1

公开(公告)日：2019-11-21

申请号：US16434670

申请日：2019-06-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hajime KIMURA ,  Atsushi UMEZAKI ,  Yasunori YOSHIDA ,  Hideaki SHISHIDO ,  Takuya KIMISHIMA ,  Yasuyuki ARAI

IPC: G09G3/3233 ,  G09G3/20 ,  G09G3/00 ,  G09G3/3225

Abstract: In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region. Further alternatively, a pixel lagging behind in deterioration is deteriorated so that the accumulated lighting time of pixels is equal to each other.