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：US12243345B2

公开(公告)日：2025-03-04

申请号：US18370907

申请日：2023-09-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koji Kusunoki ,  Daisuke Kubota ,  Ryo Hatsumi

IPC: G06V40/13 ,  G06F3/041 ,  G06F3/042 ,  G06V40/12 ,  G06V40/50 ,  H10K65/00

Abstract: An electronic device capable of detecting a difference in the way of touch is provided. An electronic device capable of detecting a difference in the way of touch with a small number of components is provided. An electronic device capable of executing various types of processes with simple operation is provided. The electronic device includes a control portion and a display portion. The display portion has a function of displaying an image on a screen and includes a detection portion. The detection portion has a function of detecting a touch operation and a function of imaging, at least twice, a detection object touching the screen. The control portion has a function of calculating a difference between the area of the detection object in first imaging and the area of the detection object in second imaging to execute a different process depending on whether the difference is larger or smaller than a reference.

公开(公告)号：US12239005B2

公开(公告)日：2025-02-25

申请号：US18417153

申请日：2024-01-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kubota ,  Ryo Hatsumi ,  Taisuke Kamada ,  Yuji Iwaki ,  Junpei Momo ,  Shunpei Yamazaki

IPC: H10K65/00 ,  A61B5/00 ,  A61B5/1172 ,  A61B5/145 ,  A61B5/1455 ,  G06F3/044 ,  G06V40/12 ,  G06V40/13 ,  G09F9/33 ,  H01L25/18 ,  H10K30/80 ,  H10K59/40

Abstract: A display device having a photosensing function is provided. A display device having a biometric authentication function typified by fingerprint authentication is provided. A display device having a touch panel function and a biometric authentication function is provided. The display device includes a first substrate, a light guide plate, a first light-emitting element, a second light-emitting element, and a light-receiving element. The first substrate and the light guide plate are provided to face each other. The first light-emitting element and the light-receiving element are provided between the first substrate and the light guide plate. The first light-emitting element has a function of emitting first light through the light guide plate. The second light-emitting element has a function of emitting second light to a side surface of the light guide plate. The light-receiving element has functions of receiving the first light and converting the first light into an electric signal and functions of receiving the second light and converting the second light into an electric signal. The first light includes visible light, and the second light includes infrared light.

公开(公告)号：US12219862B2

公开(公告)日：2025-02-04

申请号：US18592944

申请日：2024-03-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Taisuke Kamada ,  Ryo Hatsumi ,  Daisuke Kubota ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Harue Osaka ,  Satoshi Seo

IPC: H10K65/00 ,  H10K39/32 ,  H10K50/16 ,  H10K50/17 ,  H10K50/86 ,  H10K59/12 ,  H10K59/40 ,  H10K101/30

Abstract: An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.

公开(公告)号：US12167631B2

公开(公告)日：2024-12-10

申请号：US17626212

申请日：2020-07-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Ryo Hatsumi ,  Taisuke Kamada ,  Daisuke Kubota

IPC: H10K50/86 ,  H10K59/13 ,  H10K59/40 ,  H10K59/65 ,  H10K59/80

Abstract: An object is to provide a display device having a function of emitting visible light and infrared light and an imaging function. Another object is to increase the definition without changing the density of imaging elements while the high resolution of an image displayed on a display device is kept. The display device has a layout in which a light-receiving region of an imaging element is provided between light-emitting regions of a plurality of light-emitting elements over one substrate. In the imaging function of the display device, as a means for increasing the definition of a captured image, the definition is increased without changing the density of imaging elements by capturing an image by time division.

公开(公告)号：US12154913B2

公开(公告)日：2024-11-26

申请号：US18539698

申请日：2023-12-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kubota ,  Ryo Hatsumi

IPC: H01L27/12 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/136 ,  H01L29/04 ,  H01L29/786

Abstract: To provide a display device with excellent display quality, in a display device including a signal line, a scan line, a transistor, a pixel electrode, and a common electrode in a pixel, the common electrode is included in which an extending direction of a region overlapping with the signal line differs from an extending direction of a region overlapping with the pixel electrode in a planar shape and the extending directions intersect with each other between the signal line and the pixel electrode. Thus, a change in transmittance of the pixel can be suppressed; accordingly, flickers can be reduced.

公开(公告)号：US12108165B2

公开(公告)日：2024-10-01

申请号：US17639683

申请日：2020-09-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke Kubota ,  Ryo Hatsumi ,  Taisuke Kamada

IPC: H04N23/80 ,  G06T5/50 ,  G06T5/80 ,  H04N23/10 ,  H04N23/56 ,  H04N25/10 ,  H10K65/00

CPC classification number: H04N23/80 ,  G06T5/50 ,  G06T5/80 ,  H04N23/125 ,  H04N23/56 ,  H04N25/10 ,  H10K65/00 ,  G06T2207/20212

Abstract: A thin lightweight imaging device is provided. A highly convenient imaging device is provided. The imaging unit includes an imaging unit, a memory, and an arithmetic circuit. The imaging unit includes a light-receiving device, a first light-emitting device, and a second light-emitting device. The first light-emitting device has a function of emitting light in a wavelength range that is different from a wavelength range of light emitted by the second light-emitting device. The imaging unit has a function of making the first light-emitting device emit light and acquiring first image data. The imaging unit has a function of making the second light-emitting device emit light and acquiring second image data. The memory has a function of retaining the first reference data and the second reference data. The arithmetic circuit has a function of correcting the first image data with the use of the first reference data retained in the memory and calculating first correction image data. The arithmetic circuit has a function of correcting the second image data with the use of the second reference data retained in the memory and calculating second correction image data. The arithmetic circuit has a function of combining the first correction image data and the second correction image data to generate synthesized image data. The light-receiving device includes a first pixel electrode, and the first light-emitting device includes a second pixel electrode on the same plane as the first pixel electrode.

公开(公告)号：US12099686B2

公开(公告)日：2024-09-24

申请号：US18379287

申请日：2023-10-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kubota ,  Ryo Hatsumi ,  Taisuke Kamada

IPC: G06F3/044 ,  G02B6/42 ,  G06F3/042 ,  G06V40/13

CPC classification number: G06F3/044 ,  G02B6/4298 ,  G06F3/042 ,  G06F2203/04102 ,  G06V40/1318

Abstract: A display device having a photosensing function is provided. A display device having a biometric authentication function typified by fingerprint authentication is provided. A display device having both a touch panel function and a biometric authentication function is provided. The display device includes a first substrate, a light guide plate, a first light-emitting element, a second light-emitting element, and a light-receiving element. The first substrate and the light guide plate are provided to face each other. The first light-emitting element and the light-receiving element are provided between the first substrate and the light guide plate. The first light-emitting element has a function of emitting first light through the light guide plate. The second light-emitting element has a function of emitting second light to a side surface of the light guide plate. The light-receiving element has a function of receiving the second light and converting the second light into an electric signal. The first light includes visible light, and the second light includes infrared light.

公开(公告)号：US12099587B2

公开(公告)日：2024-09-24

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 ,  G06V40/12 ,  G06V40/13

CPC classification number: G06F21/32 ,  G06V40/13 ,  G06V40/1365

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：US12096659B2

公开(公告)日：2024-09-17

申请号：US17272397

申请日：2019-08-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Taisuke Kamada ,  Ryo Hatsumi ,  Daisuke Kubota ,  Daiki Nakamura

IPC: H10K59/122 ,  H05B33/12 ,  H05B33/22 ,  H10K50/858 ,  H10K50/86 ,  H10K59/00 ,  H10K59/35 ,  H10K50/125 ,  H10K102/00

CPC classification number: H10K59/122 ,  H05B33/12 ,  H05B33/22 ,  H10K50/858 ,  H10K50/865 ,  H10K59/00 ,  H10K59/353 ,  H10K50/125 ,  H10K59/35 ,  H10K2102/311

Abstract: A display device having a photosensing function is provided. A highly convenient display device is provided. The display device includes a light-receiving element and a light-emitting element in a display portion. The light-receiving element includes a first pixel electrode, an active layer, and a common electrode. The light-emitting element includes a second pixel electrode, a light-emitting layer, and a common electrode. The active layer is positioned over the first pixel electrode. The active layer contains a first organic compound. The light-emitting layer is positioned over the second pixel electrode. The light-emitting layer contains a second organic compound different from the first organic compound. The common electrode includes a portion overlapping with the first pixel electrode with the active layer provided therebetween, and a portion overlapping with the second pixel electrode with the light-emitting layer provided therebetween. The display device preferably further includes a common layer positioned over the first pixel electrode and the second pixel electrode. The common layer includes a portion overlapping with the active layer and a portion overlapping with the light-emitting layer.