公开(公告)号：US11659758B2

公开(公告)日：2023-05-23

申请号：US16914530

申请日：2020-06-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L27/28 ,  H01L27/30 ,  H01L27/32 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L27/288 ,  H01L27/307 ,  H01L27/323 ,  H01L27/3244 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5284 ,  H01L2251/552

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：US11550181B2

公开(公告)日：2023-01-10

申请号：US17313609

申请日：2021-05-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Daisuke Kubota ,  Naoto Kusumoto

IPC: G09G3/3233 ,  H01L31/14 ,  F21S2/00 ,  G02F1/1333 ,  G09F9/00 ,  G02F1/1335 ,  G02B5/30 ,  G09G3/36 ,  G02F1/1347 ,  G09G3/32

Abstract: A display device includes a first region and a second region adjacent to the first region. A display element included in the first region has a function of reflecting visible light and a function of emitting visible light. A display element included in the second region has a function of emitting visible light. In an electronic device including the display device, the first region is located on a first surface (e.g., top surface) on which a main image is displayed, and the second region is located on a second surface (e.g., side surface) on which an auxiliary image is displayed.

公开(公告)号：US20220390791A1

公开(公告)日：2022-12-08

申请号：US17848628

申请日：2022-06-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Yoshiharu Hirakata ,  Tetsuji Ishitani ,  Daisuke Kubota ,  Ryo Hatsumi ,  Masaru Nakano ,  Takashi Hamada

IPC: G02F1/1333

Abstract: A display device including a peripheral circuit portion with high operation stability. The display device includes a first substrate and a second substrate. A first insulating layer is on a first plane of the first substrate, and a second insulating layer is on a first plane of the second substrate. An area of the first plane of the first substrate is the same as an area of the first plane of the second substrate. The first plane of the first substrate and the first plane of the second substrate face each other. A bonding layer is between the first insulating layer and the second insulating layer. A protection film is in contact with the first substrate, the first insulating layer, the bonding layer, the second insulating layer, and the second substrate.

公开(公告)号：US11226517B2

公开(公告)日：2022-01-18

申请号：US17026702

申请日：2020-09-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryo Hatsumi ,  Daisuke Kubota ,  Hiroyuki Miyake

IPC: G02F1/1337 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362

Abstract: A display device with less light leakage and excellent contrast is provided. A display device having a high aperture ratio and including a large-capacitance capacitor is provided. A display device in which wiring delay due to parasitic capacitance is reduced is provided. A display device includes a transistor over a substrate, a pixel electrode connected to the transistor, a signal line electrically connected to the transistor, a scan line electrically connected to the transistor and intersecting with the signal line, and a common electrode overlapping with the pixel electrode and the signal line with an insulating film provided therebetween. The common electrode includes stripe regions extending in a direction intersecting with the signal line.

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.

公开(公告)号：US20210278713A1

公开(公告)日：2021-09-09

申请号：US17313609

申请日：2021-05-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Daisuke Kubota ,  Naoto Kusumoto

IPC: G02F1/1335 ,  G02B5/30 ,  G09G3/3233 ,  G09G3/36 ,  G02F1/1347 ,  G09G3/32 ,  H01L31/14

Abstract: A display device includes a first region and a second region adjacent to the first region. A display element included in the first region has a function of reflecting visible light and a function of emitting visible light. A display element included in the second region has a function of emitting visible light. In an electronic device including the display device, the first region is located on a first surface (e.g., top surface) on which a main image is displayed, and the second region is located on a second surface (e.g., side surface) on which an auxiliary image is displayed.

公开(公告)号：US11029796B2

公开(公告)日：2021-06-08

申请号：US16787585

申请日：2020-02-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideaki Shishido ,  Yoshiharu Hirakata ,  Daisuke Kubota

IPC: G06F3/044 ,  G02F1/1333

Abstract: To provide a thin touch panel, a touch panel with high visibility, a lightweight touch panel, or a touch panel with low power consumption. A pair of conductive layers included in a capacitive touch sensor have a mesh shape including a plurality of openings. Furthermore, a material blocking visible light is provided to overlap with a region between two display elements in a plan view; thus, a light-blocking layer can be obtained. Furthermore, the pair of conductive layers included in the touch sensor are provided between a pair of substrates included in the touch panel, and a conductive layer capable of supplying a constant potential is provided between a circuit which drives a display element and the pair of conductive layers.

公开(公告)号：US10996524B2

公开(公告)日：2021-05-04

申请号：US16578616

申请日：2019-09-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yusuke Kubota ,  Daisuke Kubota

IPC: G02F1/1343 ,  G02F1/1362

Abstract: A display device with low power consumption and high display quality is provided. The display device includes first and second electrodes. One pixel includes a region in which the distance between the first electrode and the second electrode is constant and a region in which the distance varies; this structure allows the switching operation of liquid crystal to start in a predetermined region, thereby improving the stability of the operation of the liquid crystal. A pixel region is divided into two regions in which the liquid crystals are aligned in the two respective directions when switching is performed, whereby viewing angle characteristics are improved. Furthermore, the supply of a potential to a third electrode suppresses alignment disorder of the liquid crystal and improves the display quality.

公开(公告)号：US10591783B2

公开(公告)日：2020-03-17

申请号：US16415176

申请日：2019-05-17

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Daisuke Kubota ,  Hisao Ikeda

IPC: G02F1/1343 ,  G02F1/1333 ,  G02F1/1362 ,  G02F1/1335 ,  G02F1/1368 ,  H01L27/32 ,  H01L51/52 ,  H01L27/12 ,  H01L29/786

Abstract: A display device with a wide viewing angle is provided. A display device with a high aperture ratio is provided. The display device includes a first display element, a second display element, and an insulating layer. The first display element includes a first pixel electrode configured to reflect visible light. The second display element is configured to emit visible light. The second display element includes a second pixel electrode and a common electrode. The first pixel electrode is positioned on an opposite side of the insulating layer from the second pixel electrode. The common electrode is positioned on an opposite side of the second pixel electrode from the insulating layer. A shortest distance X between a first plane and a second plane is longer than or equal to 500 nm and shorter than or equal to 200 μm. The first plane includes a plane of the first pixel electrode on the insulating layer side in a display region of the first display element, and the second plane includes a plane of the common electrode on the insulating layer side in a display region of the second display element.

公开(公告)号：US10564782B2

公开(公告)日：2020-02-18

申请号：US15807218

申请日：2017-11-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideaki Shishido ,  Yoshiharu Hirakata ,  Daisuke Kubota

IPC: G06F3/044 ,  G02F1/1333

Abstract: To provide a thin touch panel, a touch panel with high visibility, a lightweight touch panel, or a touch panel with low power consumption. A pair of conductive layers included in a capacitive touch sensor have a mesh shape including a plurality of openings. Furthermore, a material blocking visible light is provided to overlap with a region between two display elements in a plan view; thus, a light-blocking layer can be obtained. Furthermore, the pair of conductive layers included in the touch sensor are provided between a pair of substrates included in the touch panel, and a conductive layer capable of supplying a constant potential is provided between a circuit which drives a display element and the pair of conductive layers.