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.

公开(公告)号：US11663990B2

公开(公告)日：2023-05-30

申请号：US17285603

申请日：2019-10-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Motoharu Saito

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3696 ,  G09G2300/0426 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2330/021

Abstract: A display apparatus which includes a driver with low power consumption and in which an output voltage of the driver is boosted by a pixel is provided. The source driver in which a logic unit and an amplifier unit operate appropriately by the same low voltage is included, and the pixel has a function of retaining first data, a function of adding second data to the first data to generate third data, and a function of supplying the third data to a display device. Thus, even when a voltage output from the source driver is low, the voltage can be boosted by the pixel; accordingly, the display device can operate appropriately.

公开(公告)号：US11574573B2

公开(公告)日：2023-02-07

申请号：US16636435

申请日：2018-08-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Koji Kusunoki ,  Susumu Kawashima ,  Kouhei Toyotaka

IPC: G09G3/20 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G06N3/04 ,  G06T3/40 ,  H01L27/12 ,  G02F1/1335 ,  H01L27/32

Abstract: A high-resolution display system is provided.
A display system with high display quality is provided. The display system includes a processing unit and a display unit. A first image signal is supplied to the processing unit. The processing unit has a function of generating a second image signal by using the first image signal. The processing unit has a function of generating a correction signal. The display unit includes a pixel. The pixel includes a display element and a memory circuit. The second image signal and the correction signal are supplied to the pixel. The memory circuit has a function of retaining the correction signal.

公开(公告)号：US20220270548A1

公开(公告)日：2022-08-25

申请号：US17671905

申请日：2022-02-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki Kurokawa ,  Hiromichi Godo ,  Kouhei Toyotaka ,  Kazuki Tsuda ,  Satoru Ohshita ,  Hidefumi Rikimaru

IPC: G09G3/3225 ,  G02B27/01 ,  H01L27/32 ,  G06F3/01 ,  G09G3/00

Abstract: To provide a novel electronic device. The electronic device includes a housing and a display device. The display device includes a first layer, a second layer, and a third layer. The first layer, the second layer, and the third layer are provided in different layers. The first layer includes a driver circuit and an arithmetic circuit. The second layer includes pixel circuits and a cell array. The third layer includes light-receiving devices and light-emitting devices. The pixel circuits each have a function of controlling light emission of the light-emitting device. The driver circuit has a function of controlling the pixel circuits. The arithmetic circuit has a function of performing arithmetic processing on the basis of first data corresponding to currents output from the light-receiving devices and second data corresponding to a potential held in the cell array.

公开(公告)号：US11360363B2

公开(公告)日：2022-06-14

申请号：US16962304

申请日：2019-01-08

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

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：US11222583B2

公开(公告)日：2022-01-11

申请号：US16768720

申请日：2018-12-11

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 ,  H01L27/105 ,  H01L29/786 ,  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：US10340021B2

公开(公告)日：2019-07-02

申请号：US15203885

申请日：2016-07-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Seiko Amano ,  Kouhei Toyotaka ,  Hiroyuki Miyake ,  Aya Miyazaki ,  Hideaki Shishido ,  Koji Kusunoki

IPC: G11C19/00 ,  G11C19/28 ,  G11C19/18 ,  H03K19/00 ,  H01L25/03 ,  H05K7/02 ,  G09G3/36 ,  H01L27/12

Abstract: An object is to provide a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit. A pulse signal output circuit according to one embodiment of the disclosed invention includes first to tenth transistors. The ratio W/L of the channel width W to the channel length L of the first transistor and W/L of the third transistor are each larger than W/L of the sixth transistor. W/L of the fifth transistor is larger than W/L of the sixth transistor. W/L of the fifth transistor is equal to W/L of the seventh transistor. W/L of the third transistor is larger than W/L of the fourth transistor. With such a structure, a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit can be provided.

公开(公告)号：US10217764B2

公开(公告)日：2019-02-26

申请号：US15855074

申请日：2017-12-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daiki Nakamura ,  Hisao Ikeda ,  Kouhei Toyotaka

IPC: H01L27/12 ,  H01L27/32 ,  H01L51/52

Abstract: To provide a light-emitting device or an input/output device with little unevenness in display luminance or high reliability and to provide an input/output device with high detection sensitivity, a light-emitting device is configured to include a first substrate, a light-emitting element over the first substrate, a first conductive layer over the light-emitting element, a first insulating layer over the first conductive layer, a second conductive layer over the first insulating layer, and a second substrate over the second conductive layer. The light-emitting element includes a first electrode over the first substrate, a layer containing a light-emitting organic compound over the first electrode, and a second electrode over the layer containing a light-emitting organic compound. The second electrode is electrically connected to the first and second conductive layers. The first conductive layer and the second electrode transmit light emitted from the light-emitting element. The resistance of the second conductive layer is lower than that of the second electrode.

公开(公告)号：US10073571B2

公开(公告)日：2018-09-11

申请号：US14691933

申请日：2015-04-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kazunori Watanabe ,  Hiroyuki Miyake ,  Yuji Iwaki ,  Hideaki Shishido ,  Kouhei Toyotaka ,  Koji Kusunoki

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333

CPC classification number: G06F3/044 ,  G02F1/13338 ,  G06F3/0412 ,  G06F2203/04102

Abstract: To increase the detection sensitivity of a touch panel, increase the visibility of a touch panel, provide a bendable touch panel, provide a thin touch panel, or provide a lightweight touch panel. The touch sensor has a first substrate, a first conductive layer, a second conductive layer, and an insulating layer. The first conductive layer includes a region between the first substrate and the second conductive layer. The insulating layer includes a region between the first conductive layer and the second conductive layer. The first conductive layer, the second conductive layer, and the insulating layer form a capacitor. The second conductive layer has an opening. The opening in the second conductive layer and the first conductive layer overlap with each other in a region.