公开(公告)号：US20190378585A1

公开(公告)日：2019-12-12

申请号：US16547976

申请日：2019-08-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Masayuki SAKAKURA ,  Yuugo GOTO ,  Hiroyuki MIYAKE ,  Daisuke KUROSAKI

IPC: G11C19/18 ,  H01L27/12

Abstract: A semiconductor device in which a decrease in the yield by electrostatic destruction can be prevented is provided. A scan line driver circuit for supplying a signal for selecting a plurality of pixels to a scan line includes a shift register for generating the signal. One conductive film functioning as respective gate electrodes of a plurality of transistors in the shift register is divided into a plurality of conductive films. The divided conductive films are electrically connected to each other by a conductive film which is formed in a layer different from the divided conductive films are formed. The plurality of transistors includes a transistor on an output side of the shift register.

公开(公告)号：US20190252416A1

公开(公告)日：2019-08-15

申请号：US16391877

申请日：2019-04-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: H01L27/12 ,  H01L29/786 ,  H01L29/04 ,  G09G3/20 ,  H01L29/45 ,  G11C19/28 ,  H01L29/10 ,  H01L29/24 ,  H01L29/417 ,  H01L29/423

CPC classification number: H01L27/1229 ,  G09G3/20 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0286 ,  G11C19/28 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/3262 ,  H01L29/045 ,  H01L29/1033 ,  H01L29/24 ,  H01L29/247 ,  H01L29/41733 ,  H01L29/42372 ,  H01L29/45 ,  H01L29/78648 ,  H01L29/7869 ,  H01L29/78693

Abstract: An object of an embodiment of the present invention is to manufacture a semiconductor device with high display quality and high reliability, which includes a pixel portion and a driver circuit portion capable of high-speed operation over one substrate, using transistors having favorable electric characteristics and high reliability as switching elements. Two kinds of transistors, in each of which an oxide semiconductor layer including a crystalline region on one surface side is used as an active layer, are formed in a driver circuit portion and a pixel portion. Electric characteristics of the transistors can be selected by choosing the position of the gate electrode layer which determines the position of the channel. Thus, a semiconductor device including a driver circuit portion capable of high-speed operation and a pixel portion over one substrate can be manufactured.

公开(公告)号：US20190237483A1

公开(公告)日：2019-08-01

申请号：US16375918

申请日：2019-04-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kouhei TOYOTAKA ,  Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: H01L27/12 ,  G11C19/28 ,  H01L29/786 ,  G09G3/36 ,  G09G3/3258 ,  G09G3/3233 ,  G02F1/1368 ,  G02F1/1362 ,  G02F1/1343 ,  G02F1/1337 ,  G02F1/1334

CPC classification number: H01L27/124 ,  G02F1/1334 ,  G02F1/1337 ,  G02F1/134336 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2201/121 ,  G02F2201/123 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3648 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0426 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0626 ,  G09G2330/021 ,  G11C19/28 ,  G11C19/287 ,  H01L27/1225 ,  H01L29/7869

Abstract: A semiconductor device includes first and second transistors having the same conductivity type and a circuit. One of a source and a drain of the first transistor is electrically connected to that of the second transistor. First and third potentials are supplied to the circuit through respective wirings. A second potential and a first clock signal are supplied to the others of the sources and the drains of the first and second transistors, respectively. A second clock signal is supplied to the circuit. The third potential is higher than the second potential which is higher than the first potential. A fourth potential is equal to or higher than the third potential. The first clock signal alternates the second and fourth potentials and the second clock signal alternates the first and third potentials. The circuit controls electrical connections between gates of the first and second transistors and the wirings.

公开(公告)号：US20190012960A1

公开(公告)日：2019-01-10

申请号：US16130447

申请日：2018-09-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Jun KOYAMA ,  Hiroyuki MIYAKE

IPC: G09G3/3208 ,  H01L27/32 ,  G09G3/20 ,  H01L27/12 ,  H01L29/786 ,  G09G3/3233

Abstract: Objects are to provide a display device the power consumption of which is reduced, to provide a self-luminous display device the power consumption of which is reduced and which is capable of long-term use in a dark place. A circuit is formed using a thin film transistor in which a highly-purified oxide semiconductor is used and a pixel can keep a certain state (a state in which a video signal has been written). As a result, even in the case of displaying a still image, stable operation is easily performed. In addition, an operation interval of a driver circuit can be extended, which results in a reduction in power consumption of a display device. Moreover, a light-storing material is used in a pixel portion of a self-luminous display device to store light, whereby the display device can be used in a dark place for a long time.

公开(公告)号：US20180364510A1

公开(公告)日：2018-12-20

申请号：US16109886

申请日：2018-08-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Jun KOYAMA ,  Hiroyuki MIYAKE ,  Masashi TSUBUKU ,  Kosei NODA

IPC: G02F1/1368 ,  H01L29/786 ,  H01L27/12 ,  G09G3/36

CPC classification number: G02F1/1368 ,  G09G3/3611 ,  G09G3/3648 ,  G09G3/3674 ,  G09G3/3677 ,  G09G5/18 ,  G09G2310/0286 ,  G09G2320/103 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/027 ,  H01L27/1225 ,  H01L29/7869

Abstract: A liquid crystal display device includes: a driver circuit portion; a pixel portion; a signal generation circuit for generating a control signal for driving the driver circuit portion and an image signal which is supplied to the pixel portion; a memory circuit; a comparison circuit for detecting a difference of image signals for a series of frame periods among image signals stored for respective frame periods in the memory circuit; a selection circuit which selects and outputs the image signals for the series of frame periods when the difference is detected in the comparison circuit; and a display control circuit which supplies the control signal and the image signals output from the selection circuit, to the driver circuit portion when the difference is detected in the comparison circuit, and stops supplying the control signal to the driver circuit portion when the difference is not detected in the comparison circuit.

公开(公告)号：US20180190219A1

公开(公告)日：2018-07-05

申请号：US15844750

申请日：2017-12-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G02F1/13306 ,  G02F1/136213 ,  G02F1/1368 ,  G09G3/3611 ,  G09G3/3655 ,  G09G5/18 ,  G09G2300/0404 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/0876 ,  G09G2320/10

Abstract: An object is to suppress deterioration of a displayed image even when a refresh rate is reduced in displaying a still image. A liquid crystal display device includes a pixel transistor electrically connected to a pixel electrode, and a capacitor having one electrode electrically connected to the pixel electrode and the other electrode electrically connected to a capacitor line. The pixel transistor is turned on and a voltage based on an image signal is supplied to the pixel electrode, and then, the pixel transistor is turned off so that a holding period during which the pixel electrode holds the voltage based on the image signal starts. A holding signal corresponding to change of the voltage based on the image signal in the pixel electrode in the holding period is supplied to the capacitor line so that a potential of the pixel electrode is constant.

公开(公告)号：US20180114799A1

公开(公告)日：2018-04-26

申请号：US15838476

申请日：2017-12-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE

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

Abstract: To provide a light-emitting device in which variation in luminance among pixels caused by variation in threshold voltage of transistors can be suppressed. The light-emitting device includes a transistor including a first gate and a second gate overlapping with each other with a semiconductor film therebetween, a first capacitor maintaining a potential difference between one of a source and a drain of the transistor and the first gate, a second capacitor maintaining a potential difference between one of the source and the drain of the transistor and the second gate, a switch controlling conduction between the second gate of the transistor and a wiring, and a light-emitting element to which drain current of the transistor is supplied.

公开(公告)号：US20180082645A1

公开(公告)日：2018-03-22

申请号：US15819236

申请日：2017-11-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Jun KOYAMA ,  Hiroyuki MIYAKE ,  Kouhei TOYOTAKA

IPC: G09G3/34 ,  G09G3/36 ,  G09G3/20

CPC classification number: G09G3/3406 ,  G09G3/2025 ,  G09G3/3413 ,  G09G3/3607 ,  G09G3/3659 ,  G09G2300/0456 ,  G09G2330/021

Abstract: A liquid crystal display device comprising a backlight and a pixel portion including first to 2n-th scan lines, wherein, in a first case of expressing a color image, first pixels controlled by the first to n-th scan lines are configured to express a first image using at least one of first to third hues supplied in a first rotating order, and second pixels controlled by the (n+1)-th to 2n-th scan lines are configured to express a second image using at least one of the first to third hues supplied in a second rotating order, wherein, in a second case of expressing a monochrome image, the first and second pixels controlled by the first to 2n-th scan lines are configured to express the monochrome image by external light reflected by the reflective pixel electrode, and wherein the first rotating order is different from the second rotating order.

公开(公告)号：US20170285404A1

公开(公告)日：2017-10-05

申请号：US15469759

申请日：2017-03-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Daisuke KUBOTA ,  Masaru NAKANO ,  Hiroyuki MIYAKE

IPC: G02F1/1335 ,  G02F1/1333 ,  G02F1/1362 ,  G02F1/1343

CPC classification number: G02F1/133555 ,  G02F1/133553 ,  G02F2201/44

Abstract: A novel display panel that is highly convenient or reliable is provided. A novel input/output panel that is highly convenient or reliable is provided. A novel data processing device that is highly convenient or reliable is provided. The display panel includes a layer containing a liquid crystal material, a first pixel, a second pixel, and an anti-reflection structure. The layer containing a liquid crystal material includes a first region, a second region, and a third region. The first pixel includes the first region. The second pixel includes the second region. The anti-reflection structure includes a region overlapping with the third region. The anti-reflection structure has a function of reducing reflectance of visible light which enters through the layer containing a liquid crystal material.

公开(公告)号：US20170271431A1

公开(公告)日：2017-09-21

申请号：US15473704

申请日：2017-03-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE ,  Hisao IKEDA

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/00

CPC classification number: G06F1/1652 ,  H01L24/50 ,  H01L27/3204 ,  H01L27/3293 ,  H01L27/3297 ,  H01L51/0097 ,  H01L51/5212 ,  H01L51/5228 ,  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.