公开(公告)号：US20230307464A1

公开(公告)日：2023-09-28

申请号：US18197785

申请日：2023-05-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kouhei TOYOTAKA ,  Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: H01L27/12 ,  G11C19/28 ,  G09G3/20 ,  G02F1/1334 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/36 ,  H01L29/786

CPC classification number: H01L27/124 ,  G11C19/287 ,  G11C19/28 ,  G09G3/20 ,  G02F1/1334 ,  G02F1/1337 ,  G02F1/134336 ,  G02F1/136286 ,  G02F1/1368 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3648 ,  H01L27/1225 ,  H01L29/7869 ,  G09G2310/0286 ,  G09G3/3266

Abstract: A semiconductor device includes first and second transistors having the same conductivity type and a circuit. One of a source and a drain of the first transistor is electrically connected to that of the second transistor. First and third potentials are supplied to the circuit through respective wirings. A second potential and a first clock signal are supplied to the others of the sources and the drains of the first and second transistors, respectively. A second clock signal is supplied to the circuit. The third potential is higher than the second potential which is higher than the first potential. A fourth potential is equal to or higher than the third potential. The first clock signal alternates the second and fourth potentials and the second clock signal alternates the first and third potentials. The circuit controls electrical connections between gates of the first and second transistors and the wirings.

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：US20210358410A1

公开(公告)日：2021-11-18

申请号：US17388366

申请日：2021-07-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Seiko INOUE ,  Hiroyuki MIYAKE

IPC: G09G3/3233 ,  H01L27/12

Abstract: A light-emitting device in which variation in luminance of pixels is suppressed. A light-emitting device includes at least a transistor, a first wiring, a second wiring, a first switch, a second switch, a third switch, a fourth switch, a capacitor, and a light-emitting element. The first wiring and a first electrode of the capacitor are electrically connected to each other through the first switch. A second electrode of the capacitor is connected to a first terminal of the transistor. The second wiring and a gate of the transistor are electrically connected to each other through the second switch. The first electrode of the capacitor and the gate of the transistor are electrically connected to each other through the third switch. The first terminal of the transistor and an anode of the light-emitting element are electrically connected to each other through the fourth switch.

公开(公告)号：US20210320128A1

公开(公告)日：2021-10-14

申请号：US17177422

申请日：2021-02-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Atsushi UMEZAKI ,  Hiroyuki MIYAKE

IPC: H01L27/12 ,  G09G3/36 ,  G11C19/28 ,  G09G3/20 ,  H01L27/02

Abstract: To suppress fluctuation in the threshold voltage of a transistor, to reduce the number of connections of a display panel and a driver IC, to achieve reduction in power consumption of a display device, and to achieve increase in size and high definition of the display device. A gate electrode of a transistor which easily deteriorates is connected to a wiring to which a high potential is supplied through a first switching transistor and a wiring to which a low potential is supplied through a second switching transistor; a clock signal is input to a gate electrode of the first switching transistor; and an inverted clock signal is input to a gate electrode of the second switching transistor. Thus, the high potential and the low potential are alternately applied to the gate electrode of the transistor which easily deteriorates.

公开(公告)号：US20210294446A1

公开(公告)日：2021-09-23

申请号：US17335186

申请日：2021-06-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE ,  Takahiro FUKUTOME

IPC: G06F3/041 ,  G06F3/045 ,  G02F1/1368 ,  G02F1/1362 ,  G06F3/044 ,  G06F3/047 ,  G02F1/1333

Abstract: Sensing time of a touch sensor is shortened to increase responsiveness of touch sensing. A display device includes a gate driver, a plurality of touch sensors, and a plurality of touch wirings. The gate driver has a function of supplying a scan signal to the plurality of touch wirings at the same timing, and the touch sensors in different positions sense a plurality of touches at the same timing. In this manner, the responsiveness of touch sensing is increased. The gate driver has a function of controlling a scan signal for refreshing display and a scan signal used by the touch sensor for sensing.

公开(公告)号：US20210116970A1

公开(公告)日：2021-04-22

申请号：US17109420

申请日：2020-12-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yoshiharu HIRAKATA ,  Hiroyuki MIYAKE ,  Seiko INOUE ,  Shunpei YAMAZAKI

IPC: G06F1/16 ,  G06F3/041

Abstract: A display device with low power consumption is provided. Furthermore, a display device in which an image is displayed in a region that can be used in a folded state is provided. The conceived display device includes a display portion that can be opened and folded, a sensing portion that senses a folded state of the display portion, and an image processing portion that generates, when the display portion is in the folded state, an image in which a black image is displayed in part of the display portion.

公开(公告)号：US20210056923A1

公开(公告)日：2021-02-25

申请号：US17073634

申请日：2020-10-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Seiko AMANO ,  Hiroyuki MIYAKE

IPC: G09G3/36 ,  G06F3/038 ,  G09G3/3266 ,  G11C19/28 ,  G06F1/3234 ,  H01L27/12

Abstract: In a pulse output circuit in a shift register, a power source line which is connected to a transistor in an output portion connected to a pulse output circuit at the next stage is set to a low-potential drive voltage, and a power source line which is connected to a transistor in an output portion connected to a scan signal line is set to a variable potential drive voltage. The variable potential drive voltage is the low-potential drive voltage in a normal mode, and can be either a high-potential drive voltage or the low-potential drive voltage in a batch mode. In the batch mode, display scan signals can be output to a plurality of scan signal lines at the same timing in a batch.

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：US20200176068A1

公开(公告)日：2020-06-04

申请号：US16780027

申请日：2020-02-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Masayuki SAKAKURA ,  Yuugo GOTO ,  Hiroyuki MIYAKE ,  Daisuke KUROSAKI

IPC: G11C19/18 ,  H01L27/12

Abstract: A semiconductor device in which a decrease in the yield by electrostatic destruction can be prevented is provided. A scan line driver circuit for supplying a signal for selecting a plurality of pixels to a scan line includes a shift register for generating the signal. One conductive film functioning as respective gate electrodes of a plurality of transistors in the shift register is divided into a plurality of conductive films. The divided conductive films are electrically connected to each other by a conductive film which is formed in a layer different from the divided conductive films are formed. The plurality of transistors includes a transistor on an output side of the shift register.

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.