公开(公告)号：US12225761B2

公开(公告)日：2025-02-11

申请号：US17043781

申请日：2019-04-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hisao Ikeda ,  Tomoya Aoyama ,  Kensuke Yoshizumi

IPC: H10K50/856 ,  G06F1/16 ,  H10K59/131 ,  G02B27/01

Abstract: A high-resolution display device is provided. The display device includes a plurality of light-emitting units emitting light of different colors. The light-emitting unit has a microcavity structure and intensifies light with a specific wavelength. In the light-emitting units emitting light of different colors, reflective layers with different thicknesses are formed, an insulating layer is formed to cover the reflective layers, and then a top surface of the insulating layer is subjected to planarization treatment, whereby an insulating layer with different thicknesses is formed. After that, light-emitting elements emitting white light are formed over the planarized top surface of the insulating layer to overlap with the respective reflective layers, whereby the light-emitting units that intensify different colors due to different optical path lengths are separately formed.

公开(公告)号：US11683952B2

公开(公告)日：2023-06-20

申请号：US17360151

申请日：2021-06-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hisao Ikeda ,  Hiroki Ohara ,  Makoto Hosoba ,  Junichiro Sakata ,  Shunichi Ito

IPC: H10K50/844 ,  H01L51/52 ,  G09G3/3291 ,  H01L27/32 ,  H01L51/50 ,  G02F1/1362

CPC classification number: H01L51/5253 ,  G09G3/3291 ,  H01L27/322 ,  H01L27/3211 ,  H01L27/3246 ,  H01L27/3272 ,  H01L51/5012 ,  H01L51/5203 ,  H01L51/525 ,  H01L51/5206 ,  H01L51/5234 ,  H01L51/5237 ,  H01L51/5246 ,  H01L51/5262 ,  H01L51/5275 ,  H01L51/5284 ,  G02F1/136222 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2320/043 ,  H01L2251/301 ,  H01L2251/5315 ,  H01L2251/5323 ,  H01L2251/5338 ,  H01L2251/5361

Abstract: There has been a problem that difference in refractive index between an opposite substrate or a moisture barrier layer provided thereover, and air is maintained large, and light extraction efficiency is low. Further, there has been a problem that peeling or cracking due to the moisture barrier layer is easily generated, which leads to deteriorate the reliability and lifetime of a light-emitting element. A light-emitting element comprises a pixel electrode, an electroluminescent layer, a transparent electrode, a passivation film, a stress relieving layer, and a low refractive index layer, all of which are stacked sequentially. The stress relieving layer serves to prevent peeling of the passivation film. The low refractive index layer serves to reduce reflectivity of light generated in the electroluminescent layer in emitting to air. Therefore, a light-emitting element with high reliability and long lifetime and a display device using the light-emitting element can be provided.

公开(公告)号：US11659636B2

公开(公告)日：2023-05-23

申请号：US17005714

申请日：2020-08-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hisao Ikeda ,  Nozomu Sugisawa ,  Yuichi Yanagisawa

IPC: H05B33/12 ,  H01L27/32 ,  G02F1/1333 ,  H01L51/52

CPC classification number: H05B33/12 ,  H01L27/3293 ,  G02F1/13336 ,  G02F1/133305 ,  H01L27/3244 ,  H01L51/5237 ,  H01L2251/5338

Abstract: A display device that can display an image along a curved surface is provided. In the display device, a first display panel and a second display panel overlap each other with a light-transmitting layer provided therebetween. The light-transmitting layer is positioned on a display surface side of the first display panel, and on a side opposite to the display surface of the second display panel. The light-transmitting layer has an average transmittance of 80% or more with respect to light in the wavelength range of 450 nm to 700 nm and a refractive index higher than that of air. A display region of the first display panel overlaps a region transmitting visible light of the second display panel with the light-transmitting layer provided therebetween. It is preferred that the display region of the first display panel not overlap with a region blocking visible light of the second display panel.

公开(公告)号：US11647663B2

公开(公告)日：2023-05-09

申请号：US17379007

申请日：2021-07-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki Miyake ,  Hisao Ikeda

IPC: H01L27/32 ,  G06F1/16 ,  H01L51/00 ,  H01L51/52 ,  H01L23/00 ,  H01K1/00

CPC classification number: H01L27/3204 ,  G06F1/1652 ,  H01K1/00 ,  H01L24/50 ,  H01L27/3293 ,  H01L51/0097 ,  H01L51/5212 ,  H01L51/5228 ,  H01L27/3276 ,  H01L2251/5338 ,  Y02E10/549

Abstract: To provide a display device that is suitable for increasing in size, a display device in which display unevenness is suppressed, or a display device that can display an image along a curved surface. The display device includes a first display panel and a second display panel each including a pair of substrates. The first display panel and the second display panel each include a first region which can transmit visible light, a second region which can block visible light, and a third region which can perform display. The third region of the first display panel and the first region of the second display panel overlap each other. The third region of the first display panel and the second region of the second display panel do not overlap each other.

公开(公告)号：US11270997B2

公开(公告)日：2022-03-08

申请号：US16757025

申请日：2018-11-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuya Onuki ,  Yuki Okamoto ,  Hisao Ikeda ,  Shuhei Nagatsuka

IPC: H01L27/00 ,  H01L29/00 ,  H01L27/105 ,  H01L27/12 ,  H01L29/786

Abstract: A novel memory device is provided. A first cell array including a plurality of memory cells and a second cell array including a plurality of memory cells are stacked. One of two bit lines of a first bit line pair is electrically connected to A memory cells of the first cell array, and the other of the two bit lines of the first bit line pair is electrically connected to D memory cells of the second cell array. One of two bit lines of a second bit line pair is electrically connected to B memory cells of the first cell array and F memory cells of the second cell array, and the other of the two bit lines of the second bit line pair is electrically connected to C memory cells of the first cell array and E memory cells of the second cell array. The first bit line pairs and the second bit line pairs are alternately provided.

公开(公告)号：US11172109B2

公开(公告)日：2021-11-09

申请号：US16773435

申请日：2020-01-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daiki Nakamura ,  Nobuharu Ohsawa ,  Hisao Ikeda ,  Akihiro Kaita ,  Shunpei Yamazaki

IPC: H05B45/10 ,  H05B47/10 ,  H04N5/235 ,  H04N5/225 ,  H05B33/08 ,  H05B45/37 ,  H05B45/00 ,  H05B47/11 ,  H05B45/395 ,  H05B45/12 ,  G03B15/05

Abstract: To provide a light-emitting device whose amount of light can be adjusted, or the like. The amount of light emitted from the light-emitting device can be adjusted by controlling the magnitude of the constant current pulse by a control signal. Specifically, the light-emitting device includes a constant current supply configured to be supplied with a control signal and a control pulse signal and configured to supply a constant current pulse; a control device configured to supply the control signal; a driver circuit configured to supply the control pulse signal; and a light-emitting panel configured to be supplied with the constant current pulse. The control signal is a signal for controlling the magnitude of the constant current pulse. The light-emitting panel includes a light-emitting element. The current density of the light-emitting element is greater than or equal to 10 mA/cm2 and less than or equal to 1000 mA/cm2.

公开(公告)号：US10764481B2

公开(公告)日：2020-09-01

申请号：US15829410

申请日：2017-12-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yoshiharu Hirakata ,  Nobuharu Ohsawa ,  Hisao Ikeda ,  Kazuhiko Fujita ,  Akihiro Kaita

IPC: H05B37/00 ,  H04N5/225 ,  G03B15/05 ,  H01L51/52 ,  H05B45/37 ,  G03B15/03 ,  H04N5/235 ,  H05B33/08 ,  H04N5/232

Abstract: A small light-emitting device is provided. A light-emitting device which is less likely to produce a shadow is provided. A structure including a switching circuit for supplying a pulsed constant current and a light-emitting panel supplied with the pulsed constant current has been conceived.

公开(公告)号：US10592193B2

公开(公告)日：2020-03-17

申请号：US15856261

申请日：2017-12-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hisao Ikeda ,  Nozomu Sugisawa ,  Yuichi Yanagisawa

IPC: G06F3/14 ,  G06F3/041 ,  G06F3/042 ,  G02F1/1333

Abstract: To provide a display device that is suitable for increasing in size. To provide a display device in which display unevenness is suppressed. In a display device, a plurality of display panels are arranged to partly overlap one another. In two of the overlapping display panels, a display panel positioned on the display surface side includes a region transmitting visible light that is adjacent to a display portion, and the region transmitting visible light overlaps with a pixel of a display panel positioned on the lower side. Furthermore, in at least a display portion of the display panel placed on the lower side, an aperture ratio of the pixel overlapping with the region transmitting visible light of the display panel on the upper side is higher than an aperture ratio of another pixel.

公开(公告)号：US10573667B2

公开(公告)日：2020-02-25

申请号：US15366255

申请日：2016-12-01

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 ,  G09G3/20 ,  G09G3/3233 ,  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：US10442172B2

公开(公告)日：2019-10-15

申请号：US15610890

申请日：2017-06-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kayo Kumakura ,  Tomoya Aoyama ,  Akihiro Chida ,  Kohei Yokoyama ,  Masakatsu Ohno ,  Satoru Idojiri ,  Hisao Ikeda ,  Hiroki Adachi ,  Yoshiharu Hirakata ,  Shingo Eguchi ,  Yasuhiro Jinbo

IPC: B32B43/00 ,  G02B6/00 ,  H01L21/67 ,  B26D1/04 ,  H01L51/56 ,  B32B38/10 ,  B26D1/00 ,  H01L27/12 ,  H01L27/32

Abstract: A processing apparatus of a stack is provided. The stack includes two substrates attached to each other with a gap provided between their end portions. The processing apparatus includes a fixing mechanism that fixes part of the stack, a plurality of adsorption jigs that fix an outer peripheral edge of one of the substrates of the stack, and a wedge-shaped jig that is inserted into a corner of the stack. The plurality of adsorption jigs include a mechanism that allows the adsorption jigs to move separately in a vertical direction and a horizontal direction. The processing apparatus further includes a sensor sensing a position of the gap between the end portion in the stack. A tip of the wedge-shaped jig moves along a chamfer formed on an end surface of the stack. The wedge-shaped jig is inserted into the gap between the end portions in the stack.