公开(公告)号：US20220075461A1

公开(公告)日：2022-03-10

申请号：US17422891

申请日：2020-01-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Daisuke KUBOTA ,  Kensuke YOSHIZUMI

IPC: G06F3/0354 ,  H01L27/28 ,  G09G3/3233

Abstract: A highly convenient display system is provided. A display system that enables a screen to be operated easily with a laser pointer is provided. A display system that enables a screen to be operated by a large number of people is provided. The display system includes a light-emitting apparatus and a display device. The light-emitting apparatus includes a means for emitting visible laser light and a means for emitting invisible light. The display device includes a display unit including a means for displaying an image and a means for obtaining positional information on a portion irradiated with the visible light, and a means for receiving the invisible light. The display system has a function of performing processing in accordance with the positional information when the invisible light is received.

公开(公告)号：US20220068181A1

公开(公告)日：2022-03-03

申请号：US17423237

申请日：2020-01-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazunori WATANABE ,  Susumu KAWASHIMA ,  Masataka SHIOKAWA ,  Daisuke KUBOTA ,  Jiro IMADA ,  Katsuki YANAGAWA ,  Koji KUSUNOKI

IPC: G09G3/20

Abstract: A functional panel is provided. The functional panel includes a first driver circuit, a second driver circuit, and a region. The first driver circuit supplies a first selection signal, the second driver circuit supplies a second selection signal and a third selection signal, and the region includes a pixel. The pixel includes a first pixel circuit, a light-emitting element, a second pixel circuit, and a photoelectric conversion element. The first pixel circuit is supplied with the first selection signal, the first pixel circuit obtains an image signal on the basis of the first selection signal, the light-emitting element is electrically connected to the first pixel circuit, and the light-emitting element emits light on the basis of the image signal. The second pixel circuit is supplied with the second selection signal and the third selection signal in a period during which the first selection signal is not supplied, the second pixel circuit obtains an imaging signal on the basis of the second selection signal and supplies the imaging signal on the basis of the third selection signal, and the photoelectric conversion element is electrically connected to the second pixel circuit and generates the imaging signal.

公开(公告)号：US20220005790A1

公开(公告)日：2022-01-06

申请号：US17270722

申请日：2019-08-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazunori WATANABE ,  Koji KUSUNOKI ,  Taiki NONAKA ,  Hiroki ADACHI ,  Koichi TAKESHIMA

IPC: H01L25/075 ,  H01L27/12 ,  H01L29/786 ,  H01L33/62

Abstract: A display device with high display quality is provided. A display device with low power consumption is provided. In the display device, a first transistor, a second transistor, a first conductive layer, and a light-emitting diode package are included in a pixel. The light-emitting diode package includes a first light-emitting diode, a second light-emitting diode, a second conductive layer, a third conductive layer, and a fourth conductive layer. The first light-emitting diode includes a first electrode and a second electrode. The second light-emitting diode includes a third electrode and a fourth electrode. One of a source and a drain of the first transistor is electrically connected to the first electrode through the second conductive layer. One of a source and a drain of the second transistor is electrically connected to the third electrode through the third conductive layer. The first conductive layer is electrically connected to each of the second electrode and the fourth electrode through the fourth conductive layer. A constant potential is supplied to the first conductive layer.

公开(公告)号：US20210217805A1

公开(公告)日：2021-07-15

申请号：US17055383

申请日：2019-04-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji KUSUNOKI ,  Shingo EGUCHI ,  Yosuke TSUKAMOTO ,  Kazunori WATANABE ,  Kouhei TOYOTAKA

IPC: H01L27/15 ,  H01L33/62 ,  H01L33/00

Abstract: A display device with high resolution is provided. Manufacturing cost of a display device using a micro LED as a display element is reduced. The display device includes a substrate, a plurality of transistors, and a plurality of light-emitting diodes. The plurality of light-emitting diodes are provided in a matrix over the substrate. Each of the plurality of transistors are electrically connected to at least one of the plurality of light-emitting diodes. The plurality of light-emitting diodes are positioned closer to the substrate than the plurality of transistors are. The plurality of light-emitting diodes emit light to the opposite side of the substrate.

公开(公告)号：US20210201763A1

公开(公告)日：2021-07-01

申请号：US17056687

申请日：2019-05-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji KUSUNOKI ,  Kei TAKAHASHI ,  Toshiyuki ISA

IPC: G09G3/32

Abstract: A display device that inhibits display deterioration is provided. The display device estimates the amount of deterioration of a pixel included in the display device and corrects a first image signal supplied to the pixel. The display device includes a display panel including a plurality of pixels, a frame memory, and an arithmetic portion. The pixels each include a light-emitting element and a transistor supplying a current to the light-emitting element. The arithmetic portion has a function of performing an arithmetic operation in accordance with a regression model. A forecast error parameter and an output parameter are set in the arithmetic portion. The arithmetic portion updates the forecast error parameter from a first observation signal supplied from the frame memory and a second observation signal supplied from the pixel, in accordance with the regression model, and updates an output parameter by the forecast error parameter in accordance with the regression model. The arithmetic portion corrects the first image signal by the output parameter and generates a second image signal, and the light-emitting element emits light by the second image signal supplied to the transistor included in the pixel.

公开(公告)号：US20210193029A1

公开(公告)日：2021-06-24

申请号：US17271221

申请日：2019-09-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G09G3/32

Abstract: The power consumption of a display device is reduced. The power consumption of a driver circuit in a display device is reduced. A pixel included in the display device includes a display element. The pixel is configured to have a function of retaining a first voltage corresponding to a first input pulse signal and a function of driving the display element with a third voltage obtained by addition of a second voltage corresponding to a second input pulse signal to the first voltage.

公开(公告)号：US20210111196A1

公开(公告)日：2021-04-15

申请号：US16965053

申请日：2019-01-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei YAMAZAKI ,  Koji KUSUNOKI ,  Yoshiaki OIKAWA ,  Kensuke YOSHIZUMI

IPC: H01L27/12 ,  G02F1/1368 ,  H01L27/32 ,  H01L29/66

Abstract: A high-definition display device is provided. A display device with low power consumption is provided. A highly reliable display device is provided. The display device includes a first transistor and a display element electrically connected to the first transistor. The first transistor includes a first oxide, a second oxide, a first conductor, a second conductor, a third conductor, a first insulator, and a second insulator. The first conductor and the second conductor are positioned over the first oxide to be apart from each other. The first insulator is positioned over the first conductor and the second conductor and includes an opening. The opening overlaps with a portion between the first conductor and the second conductor. The third conductor is positioned in the opening. The second insulator is positioned between the third conductor, and the first oxide, the first conductor, the second conductor, and the first insulator. The second oxide is positioned between the second insulator, and the first oxide, the first conductor, the second conductor, and the first insulator.

公开(公告)号：US20210090513A1

公开(公告)日：2021-03-25

申请号：US16955306

申请日：2018-12-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Koji KUSUNOKI ,  Susumu KAWASHIMA ,  Shigeru ONOYA ,  Takahiro FUKUTOME ,  Shunpei YAMAZAKI

IPC: G09G3/36 ,  G09G3/3233 ,  G09G3/3275

Abstract: A semiconductor device includes a display device and a source driver. Each of a plurality of pixels included in the display device is supplied with a first data potential and a second data potential included in a range of a first potential or higher to a second potential or lower. The first data potential makes the pixel display an image with a first gray level. The pixel performs calculation with the first data potential and the second data potential to generate a third data potential. The third data makes the pixel display an image with a second gray level. A reference potential of the first data potential is an intermediate potential between the first potential and the second potential, and the gray level width that can be displayed by the second data potential is larger than the gray level width that can be displayed by the first data potential.

公开(公告)号：US20200372868A1

公开(公告)日：2020-11-26

申请号：US16770998

申请日：2018-12-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kei TAKAHASHI ,  Kouhei TOYOTAKA ,  Kazunori WATANABE ,  Shigeru ONOYA

IPC: G09G3/36 ,  G02F1/1368 ,  G02F1/1362 ,  H01L27/12 ,  H01L29/24 ,  H01L29/786

Abstract: An object of the present invention is to provide a display device with high display quality. The display device of the present invention includes a pixel and a source driver circuit. The pixel includes first and second transistors (21, 22), a capacitor (25), and a display element (26). The source driver circuit is electrically connected to first and second wirings (31, 32). The first wiring (31) is electrically connected to one electrode of the capacitor 25 and one electrode of the display element (26) through the first transistor (21). The second wiring (32) is electrically connected to the other electrode of the capacitor (25) and the other electrode of the display element (26) through the second transistor (22).

公开(公告)号：US20200327835A1

公开(公告)日：2020-10-15

申请号：US16756343

申请日：2018-10-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: G09G3/20 ,  H01L27/105 ,  H01L27/12 ,  H01L29/786 ,  H04N5/225

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.