公开(公告)号：US11024692B2

公开(公告)日：2021-06-01

申请号：US16407499

申请日：2019-05-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koji Kusunoki

IPC: H01L27/32 ,  G02F1/1335 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/3225 ,  G09G3/36 ,  G09G5/34 ,  H01L27/12 ,  H01L29/786

Abstract: Provided is a novel display panel that is highly convenient or reliable or a display panel with a high pixel aperture ratio. The display panel includes the first display element, the first conductive film electrically connected to the first display element, the second conductive film having a region overlapping with the first conductive film, the second insulating film having a region sandwiched between the second conductive film and the first conductive film, a pixel circuit electrically connected to the second conductive film, and the second display element electrically connected to the pixel circuit. The second insulating film includes an opening, and the second conductive film is electrically connected to the first conductive film in the opening.

公开(公告)号：US11013087B2

公开(公告)日：2021-05-18

申请号：US13783809

申请日：2013-03-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Koji Kusunoki

IPC: G11C19/28 ,  H05B47/10 ,  G09G3/3233 ,  G09G3/3266

Abstract: Provided is a light-emitting device which can prevent appearance of an after-image after power on. Before or after supply of a power voltage applied to a light-emitting element is cut, a potential of a gate electrode of a transistor controlling the supply of the power voltage to the light-emitting element is initialized. Specifically, in the case where the transistor is n-channel type, the potential of the gate electrode is initialized so that a gate voltage is equal to or lower than a threshold voltage. In the case where the transistor is p-channel type, the potential of the gate electrode is initialized so that the gate voltage is equal to or higher than the threshold voltage.

公开(公告)号：US10756118B2

公开(公告)日：2020-08-25

申请号：US15820965

申请日：2017-11-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Kenichi Okazaki ,  Daisuke Kurosaki ,  Yasutaka Nakazawa ,  Kazunori Watanabe ,  Koji Kusunoki

IPC: G02F1/1368 ,  H01L27/12 ,  H01L29/786

Abstract: A display device includes a liquid crystal element, a transistor, a scan line, and a signal line. The liquid crystal element includes a pixel electrode, a liquid crystal layer, and a common electrode. The scan line and the signal line are each electrically connected to the transistor. The scan line and the signal line each include a metal layer. The transistor is electrically connected to the pixel electrode. A semiconductor layer of the transistor includes a stack of a first metal oxide layer and a second metal oxide layer. The first metal oxide layer includes a region with lower crystallinity than the second metal oxide layer. The transistor includes a first region connected to the pixel electrode. The pixel electrode, the common electrode, and the first region are each configured to transmit visible light. Visible light passes through the first region and the liquid crystal element and exits from the display device.

公开(公告)号：US10345661B2

公开(公告)日：2019-07-09

申请号：US14684661

申请日：2015-04-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki Miyake ,  Koji Kusunoki ,  Tetsuji Ishitani ,  Ryo Hatsumi

IPC: G02F1/1362 ,  G02F1/1343 ,  G02F1/1368 ,  H01L27/12 ,  H01L29/786 ,  G02F1/1333 ,  G06F3/041 ,  G06F3/044 ,  G09G3/36

Abstract: To provide a display device with a novel structure that can achieve both thickness reduction and favorable display quality. In a structure of a display device including a liquid crystal layer between a pixel electrode and a counter electrode, a common electrode and an electrode of a capacitor in a touch sensor on the counter electrode side are formed integrally and supplied with a pulse signal. On the element substrate side, a signal to be supplied to a capacitor line that forms a capacitance with the pixel electrode is in conjunction with the pulse signal so as to cancel a change in an electric field applied to the liquid crystal layer. Such a structure can achieve a display device with a touch sensor function that can cancel a change in an electric field applied to a liquid crystal layer even when the electric field is changed by a pulse signal.

公开(公告)号：US10180605B2

公开(公告)日：2019-01-15

申请号：US15658653

申请日：2017-07-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Daisuke Kubota ,  Koji Kusunoki ,  Akio Yamashita

IPC: G02F1/1345 ,  G02F1/1335 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1347

Abstract: A high-image-quality display device having a transmissive mode and a reflective mode is provided. Furthermore, the display device is manufactured with higher yield and higher productivity. In the display device, a transistor used for a transmissive liquid crystal display element, the transmissive liquid crystal display element, a transistor used for a reflective liquid crystal display element, and the reflective liquid crystal display element are stacked in this order between a pair of substrates. In a manufacturing process, one or two manufacturing substrates are used in addition to the pair of substrates included in the display device. The display device is manufactured in such a manner that a second liquid crystal and a second sealant provided to surround the second liquid crystal are bonded to a first liquid crystal sealed using a first sealant. The bonding process is performed such that the first sealant and the second sealant overlap with each other. Moreover, an end portion of the first sealant which is in contact with the first liquid crystal is substantially aligned with or positioned closer to the inner side of the display device than an end portion of the second sealant which is in contact with the second liquid crystal.

公开(公告)号：US10139663B2

公开(公告)日：2018-11-27

申请号：US15153077

申请日：2016-05-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideaki Shishido ,  Koji Kusunoki ,  Kouhei Toyotaka ,  Kazunori Watanabe ,  Makoto Kaneyasu

IPC: G02F1/1335 ,  G02F1/1333 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1362 ,  G02F1/1343

Abstract: An input/output device is provided. The input/output device includes a first pixel electrode, a second pixel electrode, a first common electrode, a second common electrode, a liquid crystal, a first insulating film, a second insulating film, and a transistor. The first common electrode can serve as one electrode of a sensor element. The second common electrode can serve as the other electrode of the sensor element. The transistor includes a first gate, a second gate, and a semiconductor layer. The pixel electrode, the common electrodes, and the second gate are positioned on different planes. The second gate contains one or more kinds of metal elements included in the semiconductor layer. The second gate, the pixel electrode, and the common electrodes preferably contain one or more kinds of metal elements included in the semiconductor layer.

公开(公告)号：US10083991B2

公开(公告)日：2018-09-25

申请号：US15375453

申请日：2016-12-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Kei Takahashi ,  Hideaki Shishido ,  Koji Kusunoki

IPC: H01L27/12 ,  H01L29/04 ,  H01L29/49 ,  H01L29/786 ,  H01L27/32

CPC classification number: H01L27/1225 ,  H01L27/124 ,  H01L27/1266 ,  H01L27/3262 ,  H01L27/3272 ,  H01L29/045 ,  H01L29/4908 ,  H01L29/78648 ,  H01L29/7869

Abstract: A novel display device or the like in which a transistor connected to a scan line has small gate capacitance is provided. A novel display device or the like in which a scan line has low resistance is provided. A novel display device or the like in which pixels can be arranged with high density is provided. A novel display device or the like that can be manufactured without an increase in cost is provided. In a transistor including a first gate electrode and a second gate electrode, the first gate electrode is formed using a metal material with low resistance and the second gate electrode is formed using a metal oxide material that can reduce oxygen vacancies in an oxide semiconductor layer. The first gate electrode is connected to the scan line, and the second gate electrode is connected to a wiring to which a constant potential is supplied.

公开(公告)号：US09952725B2

公开(公告)日：2018-04-24

申请号：US14692297

申请日：2015-04-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tetsuji Ishitani ,  Ryo Hatsumi ,  Koji Kusunoki ,  Hiroyuki Miyake

IPC: G06F3/044 ,  G06F3/041 ,  G09G3/36 ,  G09G5/42

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G09G3/3618 ,  G09G2340/0435

Abstract: A novel liquid crystal display device (LCD) including a touch sensor. The LCD includes a first substrate and a second substrate, which face each other, and a liquid crystal layer. The first substrate is provided with a pixel electrode. The second substrate is provided with a first electrode, a second electrode, and an insulating layer. The pixel electrode overlaps with the first electrode with the liquid crystal layer interposed therebetween. The second electrode overlaps with the first electrode with the insulating layer interposed therebetween. The LCD generates a signal corresponding to a potential of the second electrode. This structure enables a thin and lightweight LCD.

公开(公告)号：US09448451B2

公开(公告)日：2016-09-20

申请号：US14749686

申请日：2015-06-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei Toyotaka ,  Koji Kusunoki

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1368

CPC classification number: G02F1/136213 ,  G02F1/136277 ,  G02F1/136286 ,  G02F1/1368 ,  G09G3/3648 ,  G09G2330/021 ,  G09G2330/027

Abstract: It is an object to provide a liquid crystal display device and a driving method of a liquid crystal display device in each of which deterioration of an image display function can be suppressed and power consumption can be sufficiently reduced. In the liquid crystal display device, a fixed potential is input to a capacitor before a power source is turned off, so that a potential difference between electrodes of the capacitor disappears (capacitance becomes almost zero) such that electric field is not applied to liquid crystals, whereby the liquid crystals are in an initial state. When the supply of the power source is stopped after an initial-state image is displayed, unnecessary electric field is not continuously applied to the liquid crystals in an off state, whereby the liquid crystals can be in the stable initial state; therefore, the liquid crystals can be prevented from deteriorating.

公开(公告)号：US08693617B2

公开(公告)日：2014-04-08

申请号：US13891364

申请日：2013-05-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G11C19/00

CPC classification number: G11C19/28 ,  G09G3/3677 ,  G09G3/3696 ,  G09G2300/0809 ,  G09G2310/0286 ,  G11C19/184 ,  H01L25/03 ,  H01L27/1222 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1251 ,  H01L27/127 ,  H01L27/1288 ,  H01L2924/0002 ,  H03K19/0013 ,  H05K7/02 ,  H01L2924/00

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.

Abstract translation: 目的在于提供能够稳定运行的脉冲信号输出电路和包括脉冲信号输出电路的移位寄存器。 根据所公开的发明的一个实施例的脉冲信号输出电路包括第一至第十晶体管。 沟道宽度W与第一晶体管的沟道长度L和第三晶体管的W / L的比率W / L都大于第六晶体管的W / L。 第五晶体管的W / L大于第六晶体管的W / L。 第五晶体管的W / L等于第七晶体管的W / L。 第三晶体管的W / L大于第四晶体管的W / L。 通过这样的结构，可以提供能够稳定运行的脉冲信号输出电路和包括脉冲信号输出电路的移位寄存器。