公开(公告)号：US12276889B1

公开(公告)日：2025-04-15

申请号：US17044515

申请日：2019-03-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu Kawashima ,  Tetsuji Ishitani ,  Kouhei Toyotaka ,  Koji Kusunoki ,  Daisuke Kubota ,  Akio Yamashita

IPC: G02F1/1362 ,  G02F1/1334 ,  G02F1/1368

Abstract: A display device including a circuit suitable for controlling a liquid crystal element is provided. The display device includes two memories in one pixel and a plurality of pixels arranged in the horizontal and vertical directions share a gate line. The display device includes a liquid crystal element and by writing charges to different polarity capacitors, power consumption in an inversion operation can be reduced. Furthermore, a liquid crystal element with a high threshold voltage can be suitably used and a wide range of voltages can be applied without impairing grayscale display characteristics in the display device. Furthermore, a voltage higher than or equal to an output voltage of a source driver can be applied to the liquid crystal element.

公开(公告)号：US12200950B2

公开(公告)日：2025-01-14

申请号：US18278199

申请日：2022-02-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H10K39/34 ,  G06F3/01 ,  G09G3/3208 ,  H10K59/65

Abstract: An electronic device having an eye tracking function is provided. The electronic device includes a display device and an optical system. The display device includes a first light-emitting element, a second light-emitting element, a sensor portion, and a driver circuit portion. The sensor portion includes a light-receiving element. The first light-emitting element has a function of emitting infrared light or visible light. The second light-emitting element has a function of emitting light of a color different from that of light emitted from the first light-emitting element. When the first light-emitting element emits infrared light, the light-receiving element has a function of detecting the infrared light that is emitted from the first light-emitting element and reflected by an eyeball of a user. When the first light-emitting element emits visible light, the light-receiving element has a function of detecting the visible light that is emitted from the first light-emitting element and reflected by the eyeball of the user. The first light-emitting element and the second light-emitting element are placed in one layer. The layer where the first light-emitting element and the second light-emitting element are positioned overlaps with the sensor portion.

公开(公告)号：US12183287B2

公开(公告)日：2024-12-31

申请号：US18560718

申请日：2022-05-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuto Yakubo ,  Kouhei Toyotaka ,  Seiko Inoue ,  Yoshiyuki Kurokawa

IPC: G09G3/3233

Abstract: A semiconductor device including a display pixel circuit and an imaging pixel circuit is provided. The semiconductor device includes first and second circuits; the first circuit includes a light-emitting device; and the second circuit includes a light-receiving device, first to fifth transistors, and a first capacitor. The light-receiving device includes first and second terminals, and the light-emitting device includes third and fourth terminals. A first terminal of the first transistor is electrically connected to a first terminal of the second transistor, and a gate of the second transistor is electrically connected to a first terminal of the third transistor and a first terminal of the first capacitor. A second terminal of the first capacitor is electrically connected to a first terminal of the fourth transistor and a first terminal of the fifth transistor. A second terminal of the fifth transistor is electrically connected to the first terminal of the light-receiving device, the second terminal of the light-receiving device is electrically connected to the third terminal of the light-emitting device, and the fourth terminal of the light-emitting device is electrically connected to a wiring.

公开(公告)号：US11960185B2

公开(公告)日：2024-04-16

申请号：US17041599

申请日：2019-03-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Kouhei Toyotaka ,  Satoshi Yoshimoto ,  Kazunori Watanabe ,  Susumu Kawashima ,  Kei Takahashi

IPC: G09G3/30 ,  G02F1/1362 ,  G09G3/12 ,  G09G3/32 ,  G09G3/36 ,  G02F1/1368

CPC classification number: G02F1/136286 ,  G09G3/32 ,  G09G3/3648 ,  G02F1/1368 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/04 ,  G09G2320/103 ,  G09G2330/021

Abstract: Display data of pixels is updated at different timings. A scan line is connected to a first pixel and a second pixel, a first wiring is connected to the first pixel, and a second wiring is connected to the second pixel. In a first period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is updated is supplied to the first wiring, and setting data for setting a state where the display data of the second pixel is updated is supplied to the second wiring. In a second period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is not updated is supplied to the first wiring, and the setting data for setting the state where the display data of the second pixel is updated is supplied to the second wiring. In a third period, the first pixel displays first display data, and the second pixel displays second display data.

公开(公告)号：US11948515B2

公开(公告)日：2024-04-02

申请号：US17911147

申请日：2021-03-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Kiyotaka Kimura ,  Hidetomo Kobayashi ,  Kei Takahashi

IPC: G09G3/3275 ,  H10K59/12

CPC classification number: G09G3/3275 ,  G09G2300/0809 ,  G09G2310/0291 ,  G09G2330/021 ,  H10K59/12

Abstract: A low-power display device is provided. The display device is provided with a plurality of display portions. A data driver circuit and an addition circuit are provided to have a region overlapping with the display portion. First analog data is output from the data driver circuit in the case where first digital data consisting of a first digital value is input to the data driver circuit, whereas second analog data is output from the data driver circuit in the case where second digital data consisting of a second digital value is input to the data driver circuit. The addition circuit generates analog data corresponding to digital data that has a high-order bit that is the first digital value and a low-order bit that is the second digital value, by adding the second analog data to the first analog data. An output terminal of the data driver circuit is directly connected to an input terminal of the addition circuit without through an amplifier circuit.

公开(公告)号：US11715438B2

公开(公告)日：2023-08-01

申请号：US17836244

申请日：2022-06-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu Kawashima ,  Kouhei Toyotaka ,  Kei Takahashi

IPC: G09G3/36 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1333 ,  G02F1/1368

CPC classification number: G09G3/3677 ,  G06F3/0418 ,  G06F3/0443 ,  G02F1/1368 ,  G02F1/13338 ,  G06F3/044 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/103

Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.

公开(公告)号：US20230088632A1

公开(公告)日：2023-03-23

申请号：US17993268

申请日：2022-11-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Koji Kusunoki

IPC: G02F1/1368 ,  H01L27/12

Abstract: A highly visible display device is provided. The display device includes a transistor, a first conductive layer, a second conductive layer, and a third conductive layer. The channel width of the transistor is greater than or equal to 30 μm and less than or equal to 1000 μm The transistor includes 2 to 50 semiconductor layers, each of which includes a first region, a second region, and a channel formation region. The channel formation region has a region overlaps with the first conductive layer. The first region overlaps with the second conductive layer and does not overlap with the first conductive layer. The second region overlaps with the third conductive layer and does not overlap with the first conductive layer. The third conductive layer has a function of transmitting visible light, and the second region and the third conductive layer in a stacked state have a function of transmitting visible light.

公开(公告)号：US11552107B2

公开(公告)日：2023-01-10

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 ,  H01L29/786 ,  G09G3/20 ,  G09G3/36 ,  G09G5/391

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：US11361726B2

公开(公告)日：2022-06-14

申请号：US17177445

申请日：2021-02-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu Kawashima ,  Kouhei Toyotaka ,  Kei Takahashi

IPC: G09G3/36 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1333 ,  G02F1/1368

Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.

公开(公告)号：US11348653B2

公开(公告)日：2022-05-31

申请号：US16458304

申请日：2019-07-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G11C19/00 ,  G11C19/28 ,  H03K19/00 ,  G11C19/18 ,  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.