公开(公告)号：US20240429352A1

公开(公告)日：2024-12-26

申请号：US18791973

申请日：2024-08-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya AOYAMA ,  Koji KUSUNOKI ,  Kensuke YOSHIZUMI

IPC: H01L33/50 ,  H01L27/15 ,  H01L33/46

Abstract: A display device having high light-extraction efficiency is provided. A low-power display device is provided. In a red or green pixel included in the display device, a light-emitting element, an optically functional layer, and a wavelength-conversion layer are stacked in this order. The light-emitting element emits blue light, the optically functional layer transmits the blue light and reflects red and green light, and the wavelength-conversion layer converts the blue light into red or green light. The blue light emitted by the light-emitting element passes through the optically functional layer and enters the wavelength-conversion layer, and red or green light is emitted to the outside. The red or green light emitted from the wavelength-conversion layer to the optically functional layer side is reflected by the optically functional layer and emitted to the outside, which improves light-extraction efficiency.

公开(公告)号：US20240414311A1

公开(公告)日：2024-12-12

申请号：US18698878

申请日：2022-11-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Yosuke TSUKAMOTO ,  Ryo HATSUMI ,  Koji KUSUNOKI

IPC: H04N13/344 ,  G02B27/01 ,  H04N13/368 ,  H04N13/383 ,  H04N13/398

Abstract: High definition and a large screen are achieved with the use of a direct-view image display device including a small number of optical systems or no optical system. A personal image display device providing the sense of immersion is achieved. A display device of the present invention is a display device placed at least on the front side of a user's visual field. The display device uses a flexible film, has a curved surface, and has a display surface on the user's side of the display device. Display is performed inside a space on the user's side of the display device, and the rear surface of the display device is placed on the side opposite to the user's side of the display device. The user's side of the display device may be provided with a large display region, or a see-through display region of the display device may display only some marks.

公开(公告)号：US20240407211A1

公开(公告)日：2024-12-05

申请号：US18695104

申请日：2022-09-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masahiro KATAYAMA ,  Yukinori SHIMA ,  Masataka NAKADA ,  Shingo EGUCHI ,  Daiki NAKAMURA ,  Koji KUSUNOKI ,  Kensuke YOSHIZUMI

IPC: H10K59/131 ,  H10K50/19 ,  H10K59/38

Abstract: A display device in which a voltage drop is inhibited adequately is provided. The display device includes a common electrode included in a first light-emitting device in which a plurality of light-emitting layers are stacked and a second light-emitting device in which a plurality of light-emitting layers are stacked and an auxiliary wiring electrically connected to the common electrode. The auxiliary wiring includes a first wiring layer and a second wiring layer, the second wiring layer is electrically connected to the first wiring layer through a contact hole of an insulating layer, and the first wiring laver has a lattice shape in a top view.

公开(公告)号：US20240188404A1

公开(公告)日：2024-06-06

申请号：US18285529

申请日：2022-03-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Kenichi OKAZAKI ,  Koji KUSUNOKI ,  Hideaki KUWABARA ,  Yoshiaki OIKAWA

IPC: H10K59/95 ,  H10K102/00

CPC classification number: H10K59/95 ,  H10K2102/311

Abstract: A display apparatus with a novel structure is provided. The display apparatus includes a display surface, a flexible non-rectangular substrate over which part of the display surface is formed, and a light-emitting device formed over the flexible substrate. The light-emitting device includes pixel regions formed in a matrix. The display surface has a convex or concave region when part of the flexible non-rectangular substrate is bent. A novel light-emitting apparatus, a novel display apparatus, a novel input/output apparatus, or a novel semiconductor apparatus can be achieved. The display apparatus enables the degree of design flexibility of a display apparatus to be increased and design of the display apparatus to be improved.

公开(公告)号：US20240164166A1

公开(公告)日：2024-05-16

申请号：US18279925

申请日：2022-02-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke KUBOTA ,  Taisuke KAMADA ,  Akio YAMASHITA ,  Kenichi OKAZAKI ,  Koji KUSUNOKI ,  Tomoaki ATSUMI

IPC: H10K59/35 ,  G09G3/3225 ,  H10K39/34

CPC classification number: H10K59/353 ,  G09G3/3225 ,  H10K39/34 ,  G09G2300/0452 ,  G09G2300/0842 ,  G09G2310/08

Abstract: A semiconductor device having a light detection function and including a high-resolution display portion is provided. The semiconductor device is a display apparatus including a light-emitting device, a light-receiving device, and a substrate. The light-emitting device includes a first electrode, a light-emitting layer, a first electron-transport layer, an electron-injection layer, and a second electrode stacked in this order over the substrate. The light-receiving device includes a third electrode, an active layer, a first hole-transport layer, the electron-injection layer, and the second electrode stacked in this order over the substrate. The first electrode is supplied with a first potential. The second electrode is preferably supplied with a second potential lower than the first potential. The third electrode is preferably supplied with a third potential higher than the second potential.

公开(公告)号：US20240107799A1

公开(公告)日：2024-03-28

申请号：US18533282

申请日：2023-12-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Daiki NAKAMURA ,  Ryo HATSUMI ,  Rai SATO ,  Shingo EGUCHI ,  Koji KUSUNOKI

IPC: H10K50/858 ,  G02B3/00 ,  G02B27/09 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/042 ,  G06F3/147 ,  G09F9/30 ,  G09G3/30 ,  G09G3/3225 ,  H05B33/02 ,  H10K50/00 ,  H10K59/00 ,  H10K59/12 ,  H10K59/60

CPC classification number: H10K50/858 ,  G02B3/00 ,  G02B3/0056 ,  G02B27/0955 ,  G06F3/03545 ,  G06F3/0412 ,  G06F3/042 ,  G06F3/0421 ,  G06F3/147 ,  G09F9/30 ,  G09G3/30 ,  G09G3/3225 ,  H05B33/02 ,  H10K50/00 ,  H10K59/00 ,  H10K59/12 ,  H10K59/60 ,  G06F3/16

Abstract: A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a base material and a pair of pixels, and the base material covers the pair of pixels and has a light-transmitting property. The pair of pixels includes one pixel and another pixel, and the one pixel includes a light-emitting device and a first microlens. The light-emitting device emits light toward the base material, and the first microlens is interposed between the base material and the light emission and converges light. The first microlens includes a first surface and a second surface; the second surface is closer to the light-emitting device than the first surface is; and the second surface has a smaller radius of curvature than the first surface. The other pixel includes a photoelectric conversion device and a second microlens. The second microlens is interposed between the base material and the photoelectric conversion and converges external light incident from the base material side. The second microlens includes a third surface and a fourth surface; the third surface is closer to the photoelectric conversion device than the fourth surface is; and the fourth surface has a smaller radius of curvature than the third surface.

公开(公告)号：US20230400740A1

公开(公告)日：2023-12-14

申请号：US18233953

申请日：2023-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Susumu KAWASHIMA ,  Daisuke KUBOTA ,  Tetsuji ISHITANI ,  Akio YAMASHITA

IPC: G02F1/1362 ,  G02F1/1333 ,  G02F1/137 ,  C09K19/38 ,  G02F1/1343 ,  G02F1/1368

CPC classification number: G02F1/13624 ,  G02F1/133357 ,  G02F1/13756 ,  C09K19/3857 ,  G02F1/133345 ,  G02F1/133365 ,  G02F1/13439 ,  G02F1/136227 ,  G02F1/1368

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

公开(公告)号：US20230350256A1

公开(公告)日：2023-11-02

申请号：US18202557

申请日：2023-05-26

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：US20230326396A1

公开(公告)日：2023-10-12

申请号：US18018051

申请日：2021-07-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Satoshi YOSHIMOTO

IPC: G09G3/32 ,  H10K59/131

CPC classification number: G09G3/32 ,  H10K59/131 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/02 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display apparatus having a wide range of threshold voltage compensation function is provided. In the display apparatus, a p-channel transistor is used as a driving transistor of the light-emitting device. Discharging is performed through a source-drain path while constant voltage is supplied to a gate so that Vth is extracted between the gate and the source. In addition, when a drain potential is set to the sum of forward voltage and a cathode potential of the light-emitting device or a potential sufficiently lower than the sum, it is possible to continue the discharging even when Vth is positive voltage. That is, compensation can be performed even in the case where Vth variation occurs from positive voltage to negative voltage.

公开(公告)号：US20230298504A1

公开(公告)日：2023-09-21

申请号：US18201823

申请日：2023-05-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kei TAKAHASHI ,  Shunpei YAMAZAKI

IPC: G09G3/20 ,  H01L27/12 ,  H01L29/786 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/20 ,  H01L27/1225 ,  H01L27/1255 ,  H01L29/7869 ,  G09G3/2074 ,  G09G3/3233 ,  G09G2300/0852 ,  H01L27/124 ,  G09G2300/0417 ,  G09G2300/0861 ,  G09G2340/0428 ,  G09G2320/0295 ,  H01L29/78648 ,  H01L27/1207 ,  H04N23/50

Abstract: To provide a display device capable of displaying a plurality of images by superimposition using a plurality of memory circuits provided in a pixel. A plurality of memory circuits are provided in a pixel, and signals corresponding to images for superimposition are retained in each of the plurality of memory circuits. In the pixel, the signals corresponding to the images for superimposition are added to each of the plurality of memory circuits. The signals are added to the signals retained in the memory circuits by capacitive coupling. A display element can display an image corresponding to a signal in which a signal written to a pixel through a wiring is added to the signals retained in the plurality of memory circuits. Reduction in the amount of arithmetic processing for displaying images by superimposition can be achieved.