公开(公告)号：US12020513B2

公开(公告)日：2024-06-25

申请号：US17925878

申请日：2021-05-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke Kubota ,  Koji Kusunoki ,  Shunpei Yamazaki

IPC: G06V40/70 ,  G06F3/042 ,  G06F21/32 ,  G06V40/13

CPC classification number: G06V40/70 ,  G06F3/042 ,  G06F21/32 ,  G06V40/1306 ,  G06V40/1318

Abstract: An electronic device having an authentication method with high security is provided. The electronic device includes a pixel portion, a sensor portion, and an authentication portion. The pixel portion includes a display element and a light-receiving element. The pixel portion includes a first region and has a function of making the display element of the first region emit light. The pixel portion has a function of obtaining first authentication information by capturing an image of an object that is in contact with the first region with the use of the light-receiving element. The sensor portion includes a second region and has a function of obtaining second authentication information by capturing an image of an object that is in contact with the second region. The authentication portion has a function of performing first authentication processing using the first authentication information. The authentication portion has a function of performing second authentication processing using the second authentication information.

公开(公告)号：US11961871B2

公开(公告)日：2024-04-16

申请号：US17055383

申请日：2019-04-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji Kusunoki ,  Shingo Eguchi ,  Yosuke Tsukamoto ,  Kazunori Watanabe ,  Kouhei Toyotaka

IPC: H01L27/15 ,  H01L33/00 ,  H01L33/62

CPC classification number: H01L27/156 ,  H01L33/005 ,  H01L33/62 ,  H01L2933/0066

Abstract: A display device with high resolution is provided. Manufacturing cost of a display device using a micro LED as a display element is reduced. The display device includes a substrate, a plurality of transistors, and a plurality of light-emitting diodes. The plurality of light-emitting diodes are provided in a matrix over the substrate. Each of the plurality of transistors are electrically connected to at least one of the plurality of light-emitting diodes. The plurality of light-emitting diodes are positioned closer to the substrate than the plurality of transistors are. The plurality of light-emitting diodes emit light to the opposite side of the substrate.

公开(公告)号：US11869428B2

公开(公告)日：2024-01-09

申请号：US17781409

申请日：2020-12-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu Kawashima ,  Koji Kusunoki ,  Kazunori Watanabe

IPC: G09G3/3233 ,  H10K65/00 ,  G06V40/13 ,  G06F3/041 ,  G06F3/042

CPC classification number: G09G3/3233 ,  H10K65/00 ,  G06F3/0412 ,  G06F3/0421 ,  G06V40/1318 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2330/021 ,  G09G2354/00 ,  G09G2360/14

Abstract: A display apparatus capable of image capturing with high sensitivity is provided. The display apparatus is configured to include first to third switches, a first transistor, a second transistor, and a light-emitting/receiving element. The first switch is electrically connected to a gate of the first transistor. The second switch is positioned between one of a source and a drain of the first transistor and one electrode of the light-emitting/receiving element. The third switch is positioned between the one electrode of the light-emitting/receiving element and a gate of the second transistor. The other of the source and the drain of the first transistor is supplied with a first potential. The other electrode of the light-emitting/receiving element is supplied with a second potential. The light-emitting/receiving element has a function of emitting light of a first color and a function of receiving light of a second color.

公开(公告)号：US11837607B2

公开(公告)日：2023-12-05

申请号：US17944275

申请日：2022-09-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Kenichi Okazaki ,  Daisuke Kurosaki ,  Yasutaka Nakazawa ,  Kazunori Watanabe ,  Koji Kusunoki

IPC: G02F1/1368 ,  H01L27/12 ,  G06F3/041 ,  G06F3/044 ,  H01L29/786

CPC classification number: H01L27/1229 ,  G02F1/1368 ,  G06F3/0446 ,  G06F3/04166 ,  H01L29/7869 ,  H01L29/78696

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：US11817726B2

公开(公告)日：2023-11-14

申请号：US17879394

申请日：2022-08-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji Kusunoki ,  Toshiyuki Isa ,  Akihiro Chida ,  Kouhei Toyotaka ,  Ryota Tajima

IPC: H02J7/00 ,  H02J50/10 ,  H02J7/04 ,  H02J50/40 ,  H01F27/34 ,  H02J50/12 ,  H02J7/02

CPC classification number: H02J7/0013 ,  H02J7/00032 ,  H02J7/00034 ,  H02J7/04 ,  H02J50/10 ,  H02J50/40 ,  H02J50/402 ,  H01F27/346 ,  H02J7/0048 ,  H02J7/02 ,  H02J50/12

Abstract: Deterioration of a storage battery included in an electronic device is reduced. Power consumption of an electronic device is reduced. A power feeding device having excellent performance is provided. The power feeding device includes a power feeding coil, a control circuit, and a neural network and has a function of charging a storage battery with a wireless signal supplied by the power feeding coil. The control circuit has a function of estimating a remaining capacity value of the storage battery, the control circuit has a function of supplying the estimated remaining capacity value to the neural network, the neural network outputs a value corresponding to the supplied remaining capacity value to the control circuit, the control circuit determines a charge condition for the storage battery on the basis of the value output by the neural network, and the power feeding device has a function of charging the storage battery under the determined charge condition.

公开(公告)号：US11815775B2

公开(公告)日：2023-11-14

申请号：US17837711

申请日：2022-06-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei Takahashi ,  Susumu Kawashima ,  Koji Kusunoki ,  Kouhei Toyotaka ,  Kazunori Watanabe

IPC: G02F1/1362 ,  G02F1/1368 ,  G02F1/137 ,  G09G3/36 ,  G09G3/20 ,  G02F1/133

CPC classification number: G02F1/136286 ,  G02F1/133 ,  G02F1/137 ,  G02F1/1368 ,  G09G3/20 ,  G09G3/2085 ,  G09G3/36 ,  G09G3/3611 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3659 ,  G02F1/13793

Abstract: The display apparatus includes a data generation circuit, a source driver circuit, and a pixel. The source driver circuit is electrically connected to the pixel through first and second wirings. The pixel includes a display device that is a liquid crystal device, a potential of one electrode of the display device can be a potential of the first wiring, and a potential of the other electrode of the display device can be a potential of the second wiring. The image data generation circuit has a function of generating digital image data including first and second data. One of the first and second wirings is made to have a potential corresponding to first data, and the other of the first and second wirings is made to have a potential corresponding to the second data. The potential of the first wiring and the potential of the second wiring are interchanged.

公开(公告)号：US11791344B2

公开(公告)日：2023-10-17

申请号：US17377787

申请日：2021-07-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Kei Takahashi ,  Hideaki Shishido ,  Koji Kusunoki

IPC: H01L27/12 ,  H01L29/04 ,  H01L29/49 ,  H01L29/786 ,  H10K59/126 ,  H10K59/121

CPC classification number: H01L27/1225 ,  H01L27/124 ,  H01L27/1266 ,  H01L29/045 ,  H01L29/4908 ,  H01L29/7869 ,  H01L29/78648 ,  H10K59/126 ,  H10K59/1213

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.

公开(公告)号：US11783757B2

公开(公告)日：2023-10-10

申请号：US17562425

申请日：2021-12-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei Takahashi ,  Koji Kusunoki ,  Kazunori Watanabe ,  Susumu Kawashima ,  Kouhei Toyotaka ,  Shunpei Yamazaki

IPC: G09G3/32 ,  H01L27/12 ,  H01L25/075 ,  H01L29/786 ,  H01L33/32

CPC classification number: G09G3/32 ,  H01L27/124 ,  H01L27/1225 ,  H01L27/1255 ,  G09G2300/0809 ,  G09G2310/0243 ,  G09G2310/06 ,  H01L25/0753 ,  H01L29/7869 ,  H01L33/32

Abstract: A novel display is provided. A display having a small change in chromaticity of a micro light-emitting diode in proportion to current density is provided. A display capable of reducing power consumption in the driver circuit when displaying a still image is provided. The display includes a plurality of pixels each including a display element and a microcontroller. The microcontroller includes a first transistor, a triangular wave generator circuit, a comparator, a switch, and a constant current circuit. The first transistor has a function of retaining a potential corresponding to data written to the pixel by being switched off. The triangular wave generator circuit has a function of generating a triangular wave signal. The comparator has a function of generating an output signal corresponding to the potential and the triangular wave signal. The switch has a function of controlling whether or not to make a current flowing in the constant current circuit flow to the display element in accordance with the output signal.

公开(公告)号：US11763766B2

公开(公告)日：2023-09-19

申请号：US17887638

申请日：2022-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Kei Takahashi ,  Koji Kusunoki ,  Kazunori Watanabe ,  Susumu Kawashima

IPC: G06F3/041 ,  G09G3/36 ,  G02F1/1368

CPC classification number: G09G3/3648 ,  G06F3/041 ,  G02F1/13685 ,  G09G2310/0243 ,  G09G2354/00

Abstract: A novel display panel that is highly convenient or reliable is provided. A pixel circuit includes a first switch, a node, a first capacitor, a second capacitor, and a second switch. The first switch includes a first terminal to which a first signal is supplied and a second terminal electrically connected to the node. The first capacitor includes a first terminal electrically connected to the node. The second capacitor includes a first terminal electrically connected to the node and a second terminal electrically connected to the second switch. The second switch includes a first terminal to which a second signal is supplied and a second terminal electrically connected to the second terminal of the second capacitor. In addition, the second switch has a function of changing from a non-conducting state to a conducting state when the first switch is in a non-conducting state and a function of changing from a conducting state to a non-conducting state when the first switch is in a non-conducting state. The display element performs display on the basis of a potential of the node.

公开(公告)号：US11694648B2

公开(公告)日：2023-07-04

申请号：US17713358

申请日：2022-04-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu Kawashima ,  Koji Kusunoki ,  Kazunori Watanabe ,  Kouhei Toyotaka ,  Naoto Kusumoto ,  Shunpei Yamazaki

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1368 ,  H01L27/12 ,  H01L29/24 ,  H01L29/786 ,  H10B99/00

CPC classification number: G09G3/3685 ,  G02F1/1368 ,  G02F1/13624 ,  H01L27/124 ,  H01L27/1207 ,  H01L27/1225 ,  H01L27/1255 ,  H01L29/24 ,  H01L29/7869 ,  H01L29/78633 ,  H01L29/78648 ,  H10B99/00 ,  G02F1/13685 ,  G09G2300/0842 ,  G09G2320/02

Abstract: A display device capable of performing image processing is provided. A memory node is provided in each pixel included in the display device. An intended correction data is held in the memory node. The correction data is calculated by an external device and written into each pixel. The correction data is added to image data by capacitive coupling, and the resulting data is supplied to a display element. Thus, the display element can display a corrected image. The correction enables image upconversion, for example.