公开(公告)号：US20220253517A1

公开(公告)日：2022-08-11

申请号：US17627422

申请日：2020-07-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Daisuke KUBOTA

IPC: G06F21/32 ,  G06V40/13 ,  G06V40/12

Abstract: A composite device with a high security level is provided. A composite device capable of inhibiting unauthorized use favorably is provided. The composite device includes a control portion, a detection portion, an authentication portion, and a memory portion. The detection portion has a function of detecting a touch and a function of obtaining first fingerprint data of a finger touching the detection portion. The authentication portion has a function of executing user authentication processing. The memory portion has a function of retaining second fingerprint data registered in advance. The control portion has a function of bringing a system into an unlocked state when the authentication portion authenticates a user and a function of comparing the first fingerprint data obtained by the detection portion and the second fingerprint data when the detection portion detects a touch, and bringing the system into a locked state in the case where those data do not match.

公开(公告)号：US20220172677A1

公开(公告)日：2022-06-02

申请号：US17546696

申请日：2021-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shintaro HARADA ,  Yoshiyuki KUROKAWA ,  Takeshi AOKI ,  Yuki OKAMOTO ,  Hiroki INOUE ,  Koji KUSUNOKI ,  Yosuke TSUKAMOTO ,  Katsuki YANAGAWA ,  Kei TAKAHASHI ,  Shunpei YAMAZAKI

IPC: G09G3/3225 ,  G06F1/16 ,  G06F3/041 ,  G06N3/04 ,  G06N3/08 ,  G09G5/22 ,  G06V30/32

Abstract: An electronic device capable of efficiently recognizing a handwritten character is provided.
The electronic device includes a first circuit, a display portion, and a touch sensor. The first circuit includes a neural network. The display portion includes a flexible display. The touch sensor has the function of outputting an input handwritten character as image information to the first circuit. The first circuit has the function of analyzing the image information and converting the image information into character information, and a function of displaying an image including the character information on the display portion. The analysis is performed by inference through the use of the neural network.

公开(公告)号：US20210356797A1

公开(公告)日：2021-11-18

申请号：US17288690

申请日：2019-10-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Susumu KAWASHIMA ,  Daisuke KUBOTA ,  Tetsuji ISHITANI ,  Akio YAMASHITA

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1368 ,  G02F1/137 ,  C09K19/38

Abstract: A display device with a high aperture ratio is provided. The display device includes, in a pixel, a first transistor, a second transistor, a first insulating layer, a second insulating layer, a conductive layer, a pixel electrode, a layer containing a liquid crystal material, and a common electrode. The first insulating layer is positioned over a channel formation region of the first transistor. The conductive layer is positioned over the first insulating layer. The second insulating layer is positioned over the first transistor, the second transistor, the first insulating layer, and the conductive layer. The pixel electrode is positioned over the second insulating layer, the layer containing a liquid crystal material is positioned over the pixel electrode, and the common electrode is positioned over the layer containing a liquid crystal material. The common electrode overlaps with the conductive layer with the layer containing a liquid crystal material and the pixel electrode therebetween. The pixel includes a first connection portion where the conductive layer is electrically connected to the first transistor and a second connection portion where the pixel electrode is electrically connected to the second transistor. The conductive layer, the pixel electrode, and the common electrode each have a function of transmitting visible light.

公开(公告)号：US20210158747A1

公开(公告)日：2021-05-27

申请号：US17048687

申请日：2019-05-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji KUSUNOKI ,  Kazunori WATANABE

IPC: G09G3/32 ,  G06F3/041

Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a pixel comprising a pixel circuit and a display element, and the display element is electrically connected to the pixel circuit. The pixel circuit is supplied with a selection signal, an image signal, and a pulse width control signal, supplies an output potential, and determines, on the basis of the pulse width control signal, a period during which the output potential is supplied. The pixel circuit includes a first switch and a first transistor. The first switch supplies the image signal on the basis of the selection signal and determines the output potential on the basis of the image signal. The first transistor includes a first and second electrode, and a first gate electrode. The output potential is output from the first electrode, and the first gate electrode is supplied with the image signal.

公开(公告)号：US20210118855A1

公开(公告)日：2021-04-22

申请号：US17055206

申请日：2019-05-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji KUSUNOKI ,  Yosuke TSUKAMOTO ,  Kensuke YOSHIZUMI

IPC: H01L25/075 ,  H01L27/12 ,  H01L29/786 ,  H01L33/50 ,  H01L33/58 ,  H01L33/62

Abstract: A display device with a high luminance, a high contrast, and low power consumption is provided. The display device includes a transistor, a light-emitting element, a coloring layer, a phosphor layer, a first electrode, and a second electrode. The light-emitting element is electrically connected to the first electrode and the second electrode, the first electrode is electrically connected to the transistor, and the second electrode is positioned on the same plane as the first electrode. The coloring layer is positioned over the light-emitting element, the phosphor layer is positioned between the light-emitting element and the coloring layer, and the phosphor layer, the light-emitting element, and the coloring layer include a region in which they overlap with one another. The light-emitting element includes a light-emitting diode chip, and the phosphor layer has a function of emitting light of a complementary color of an emission color of the light-emitting element.

公开(公告)号：US20200381460A1

公开(公告)日：2020-12-03

申请号：US16999237

申请日：2020-08-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Kenichi OKAZAKI ,  Daisuke KUROSAKI ,  Yasutaka NAKAZAWA ,  Kazunori WATANABE ,  Koji KUSUNOKI

IPC: H01L27/12 ,  G02F1/1368 ,  H01L29/786

Abstract: A display device includes a liquid crystal element, a transistor, a scan line, and a signal line. The liquid crystal element includes a pixel electrode, a liquid crystal layer, and a common electrode. The scan line and the signal line are each electrically connected to the transistor. The scan line and the signal line each include a metal layer. The transistor is electrically connected to the pixel electrode. A semiconductor layer of the transistor includes a stack of a first metal oxide layer and a second metal oxide layer. The first metal oxide layer includes a region with lower crystallinity than the second metal oxide layer. The transistor includes a first region connected to the pixel electrode. The pixel electrode, the common electrode, and the first region are each configured to transmit visible light. Visible light passes through the first region and the liquid crystal element and exits from the display device.

公开(公告)号：US20200279525A1

公开(公告)日：2020-09-03

申请号：US16758108

申请日：2018-11-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Kentaro HAYASHI ,  Shunpei YAMAZAKI

IPC: G09G3/3225 ,  H01L27/32 ,  H01L29/786

Abstract: A display device that can display a high-luminance image is provided. The display device includes a display element and a memory circuit which is electrically connected to a first wiring and a second wiring. First, a reference potential is supplied to the first wiring. Next, a first image signal is supplied to the memory circuit through the second wiring. Then, the second image signal is added to the first image signal by supplying the second image signal to the memory circuit through the first wiring. After that, an image obtained by superimposing an image corresponding to the first image signal and an image corresponding to the second image signal on each other is displayed with the display element.

公开(公告)号：US20180149920A1

公开(公告)日：2018-05-31

申请号：US15825417

申请日：2017-11-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hideaki SHISHIDO ,  Koji KUSUNOKI

IPC: G02F1/1335 ,  G02F1/1362 ,  G02F1/1343 ,  G06F3/041 ,  G02F1/1333

CPC classification number: G02F1/133602 ,  G02F1/133305 ,  G02F1/13338 ,  G02F1/133382 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/136209 ,  G02F1/136213 ,  G02F1/136286 ,  G02F2201/40 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04107 ,  G06F2203/04111 ,  G06F2203/04112

Abstract: A liquid crystal display device with a high aperture ratio is provided. A liquid crystal display device with low power consumption is provided. A display device includes a liquid crystal element, a transistor, a scan line, and a signal line. The liquid crystal element includes a pixel electrode, a liquid crystal layer, and a common electrode. The scan line and the signal line are each electrically connected to the transistor. The scan line and the signal line each include a metal layer. The transistor includes a metal oxide layer, a gate, and a gate insulating layer. The metal oxide layer includes a first region and a second region. The first region overlaps with the gate with the gate insulating layer therebetween. The second region includes a first part connected to the pixel electrode. The resistivity of the second region is lower than that of the first region. The pixel electrode, the common electrode, and the first part are configured to transmit visible light. The visible light passes through the first part and the liquid crystal element and is emitted to the outside of the display device.

公开(公告)号：US20180031881A1

公开(公告)日：2018-02-01

申请号：US15658653

申请日：2017-07-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke KUBOTA ,  Koji KUSUNOKI ,  Akio YAMASHITA

IPC: G02F1/1345 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/1343 ,  G02F1/1368 ,  G02F1/1339

CPC classification number: G02F1/1345 ,  G02F1/133553 ,  G02F1/133555 ,  G02F1/1339 ,  G02F1/134309 ,  G02F1/13439 ,  G02F1/1347 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2201/123 ,  G02F2203/01 ,  G02F2203/02

Abstract: A high-image-quality display device having a transmissive mode and a reflective mode is provided. Furthermore, the display device is manufactured with higher yield and higher productivity. In the display device, a transistor used for a transmissive liquid crystal display element, the transmissive liquid crystal display element, a transistor used for a reflective liquid crystal display element, and the reflective liquid crystal display element are stacked in this order between a pair of substrates. In a manufacturing process, one or two manufacturing substrates are used in addition to the pair of substrates included in the display device. The display device is manufactured in such a manner that a second liquid crystal and a second sealant provided to surround the second liquid crystal are bonded to a first liquid crystal sealed using a first sealant. The bonding process is performed such that the first sealant and the second sealant overlap with each other. Moreover, an end portion of the first sealant which is in contact with the first liquid crystal is substantially aligned with or positioned closer to the inner side of the display device than an end portion of the second sealant which is in contact with the second liquid crystal.

公开(公告)号：US20170186777A1

公开(公告)日：2017-06-29

申请号：US15375453

申请日：2016-12-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Hideaki SHISHIDO ,  Koji KUSUNOKI

IPC: H01L27/12 ,  H01L29/786 ,  H01L29/49 ,  H01L29/04

CPC classification number: H01L27/1225 ,  H01L27/124 ,  H01L27/1266 ,  H01L27/3262 ,  H01L29/045 ,  H01L29/4908 ,  H01L29/78648 ,  H01L29/7869

Abstract: A novel display device or the like in which a transistor connected to a scan line has small gate capacitance is provided. A novel display device or the like in which a scan line has low resistance is provided. A novel display device or the like in which pixels can be arranged with high density is provided. A novel display device or the like that can be manufactured without an increase in cost is provided. In a transistor including a first gate electrode and a second gate electrode, the first gate electrode is formed using a metal material with low resistance and the second gate electrode is formed using a metal oxide material that can reduce oxygen vacancies in an oxide semiconductor layer. The first gate electrode is connected to the scan line, and the second gate electrode is connected to a wiring to which a constant potential is supplied.