公开(公告)号：US11733574B2

公开(公告)日：2023-08-22

申请号：US16956623

申请日：2018-12-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kouhei Toyotaka ,  Kazunori Watanabe ,  Susumu Kawashima ,  Kei Takahashi ,  Koji Kusunoki ,  Masataka Nakada ,  Ami Sato

IPC: G02F1/1368 ,  G02F1/1362

CPC classification number: G02F1/1368 ,  G02F1/136227

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

公开(公告)号：US11615756B2

公开(公告)日：2023-03-28

申请号：US16955306

申请日：2018-12-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei Takahashi ,  Koji Kusunoki ,  Susumu Kawashima ,  Shigeru Onoya ,  Takahiro Fukutome ,  Shunpei Yamazaki

IPC: G09G3/36 ,  G09G3/3233 ,  G09G3/3275

Abstract: A semiconductor device includes a display device and a source driver. Each of a plurality of pixels included in the display device is supplied with a first data potential and a second data potential included in a range of a first potential or higher to a second potential or lower. The first data potential makes the pixel display an image with a first gray level. The pixel performs calculation with the first data potential and the second data potential to generate a third data potential. The third data potential makes the pixel display an image with a second gray level. A reference potential of the first data potential is an intermediate potential between the first potential and the second potential, and the gray level width that can be displayed by the second data potential is larger than the gray level width that can be displayed by the first data potential.

公开(公告)号：US11487144B2

公开(公告)日：2022-11-01

申请号：US17262827

申请日：2019-07-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei Yamazaki ,  Koji Kusunoki ,  Tetsuji Ishitani

IPC: G02F1/1333 ,  G02F1/137 ,  G02F1/1337 ,  G02F1/1343 ,  G06F3/042 ,  G09G3/36 ,  G06V40/13

Abstract: A novel input/output device that is highly convenient or reliable is provided. The input/output device includes a display portion and an input portion, and the display portion includes a liquid crystal element. The liquid crystal element includes a first electrode, a second electrode, a layer containing a liquid crystal material, a first alignment film, and a second alignment film, and the second electrode is provided such that an electric field is applied to the layer containing a liquid crystal material between the first electrode and the second electrode. The layer containing a liquid crystal material scatters incident light with first scattering intensity when the electric field is in a first state, the layer containing a liquid crystal material scatters the incident light with second scattering intensity when the electric field is in a second state, which is higher than that in the first state, and the second scattering intensity is 10 or more times as high as the first scattering intensity. The layer containing a liquid crystal material contains a liquid crystal material and a polymer material, and the layer containing a liquid crystal material is stabilized by the polymer material. The input portion includes a sensing region, the input portion senses an object approaching the sensing region, the sensing region includes a region overlapping with a pixel, and the sensing region includes a sensor.

公开(公告)号：US11475832B2

公开(公告)日：2022-10-18

申请号：US17393429

申请日：2021-08-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G09G3/32 ,  G09G3/30 ,  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：US11456320B2

公开(公告)日：2022-09-27

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: G02F1/1368 ,  H01L27/12 ,  G06F3/041 ,  G06F3/044 ,  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：US11431199B2

公开(公告)日：2022-08-30

申请号：US16753872

申请日：2018-10-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

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

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 batten under the determined charge condition.

公开(公告)号：US11423855B2

公开(公告)日：2022-08-23

申请号：US16771246

申请日：2018-12-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

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

Abstract: A novel display panel that is highly convenient or reliable is provided. A pixel circuit includes a first switch, a node, a 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 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 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：US11227543B2

公开(公告)日：2022-01-18

申请号：US16489716

申请日：2018-02-26

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: G06F3/041 ,  G09G3/3225 ,  G06F1/16 ,  G06K9/00 ,  G06N3/04 ,  G06N3/08 ,  G09G5/22 ,  G09G3/36

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：US11217190B2

公开(公告)日：2022-01-04

申请号：US16770998

申请日：2018-12-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

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

Abstract: An object of the present invention is to provide a display device with high display quality. The display device of the present invention includes a pixel and a source driver circuit. The pixel includes first and second transistors (21, 22), a capacitor (25), and a display element (26). The source driver circuit is electrically connected to first and second wirings (31, 32). The first wiring (31) is electrically connected to one electrode of the capacitor 25 and one electrode of the display element (26) through the first transistor (21). The second wiring (32) is electrically connected to the other electrode of the capacitor (25) and the other electrode of the display element (26) through the second transistor (22).

公开(公告)号：US11210048B2

公开(公告)日：2021-12-28

申请号：US17016773

申请日：2020-09-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koji Kusunoki ,  Daisuke Kubota ,  Tetsuji Ishitani

IPC: G09G5/00 ,  G06F3/14 ,  G09G3/36 ,  G09G3/32

Abstract: A display device suitable for application is provided. A display device capable of displaying images with high quality and with low power consumption is provided. The display device includes a first display portion, a second display portion, a non-display portion, a first substrate, and a second substrate. The first substrate and the second substrate are provided to face each other with the first display portion, the second display portion, and the non-display portion provided therebetween. The first display portion and the second display portion are provided apart from each other with the non-display portion therebetween. A plurality of liquid crystal elements are arranged in a matrix in the first display portion. A plurality of light-emitting elements are arranged in a matrix in the second display portion. The liquid crystal element reflects light to the second substrate side. The light-emitting element emits light to the second substrate side.