公开(公告)号：US20220236824A1

公开(公告)日：2022-07-28

申请号：US17717304

申请日：2022-04-11

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Hiroyuki MIYAKE

IPC: G06F3/041 ,  G09G3/3233

Abstract: A circuit which detects an output current from a pixel and an output current from an input device, and converts the output current into data is provided. The current detection circuit includes an integer circuit, a comparator, a counter, and a latch. The integrator circuit integrates the potential of a first signal during a period determined by a second signal and outputting it as a third signal. The comparator compares the potential of the third signal with a first potential and outputting a fourth signal. The counter outputs the number of pulses included in a fifth signal as a sixth signal during a period determined by the fourth signal. The latch holds the sixth signal. The integrator circuit preferably further includes an operational amplifier and some capacitors. The first signal is supplied from a pixel included in a display device or an input portion included in an input device.

公开(公告)号：US20220107535A1

公开(公告)日：2022-04-07

申请号：US17550081

申请日：2021-12-14

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryo HATSUMI ,  Daisuke KUBOTA ,  Hiroyuki MIYAKE

IPC: G02F1/1337 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362

Abstract: A display device with less light leakage and excellent contrast is provided. A display device having a high aperture ratio and including a large-capacitance capacitor is provided. A display device in which wiring delay due to parasitic capacitance is reduced is provided. A display device includes a transistor over a substrate, a pixel electrode connected to the transistor, a signal line electrically connected to the transistor, a scan line electrically connected to the transistor and intersecting with the signal line, and a common electrode overlapping with the pixel electrode and the signal line with an insulating film provided therebetween. The common electrode includes stripe regions extending in a direction intersecting with the signal line.

公开(公告)号：US20220069020A1

公开(公告)日：2022-03-03

申请号：US17521925

申请日：2021-11-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Yoshiharu HIRAKATA ,  Hiroyuki MIYAKE

IPC: H01L27/32 ,  G06F3/041 ,  G06F1/16 ,  G06F3/044

Abstract: A flexible touch panel is provided. Both reduction in thickness and high sensitivity of a touch panel are achieved. The touch panel includes a first flexible substrate, a first insulating layer over the first substrate, a transistor and a light-emitting element over the first insulating layer, a color filter over the light-emitting element, a pair of sensor electrodes over the color filter, a second insulating layer over the sensor electrodes, a second flexible substrate over the second insulating layer, and a protective layer over the second substrate. A first bonding layer is between the light-emitting element and the color filter. The thickness of the first substrate and the second substrate is each 1 μm to 200 μm inclusive. The first bonding layer includes a region with a thickness of 50 nm to 10 μm inclusive.

公开(公告)号：US20210225314A1

公开(公告)日：2021-07-22

申请号：US17134724

申请日：2020-12-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki MIYAKE

IPC: G09G3/36 ,  G11C19/28

Abstract: A scan line to which a selection signal or a non-selection signal is input from its end, and a transistor in which a clock signal is input to a gate, the non-selection signal is input to a source, and a drain is connected to the scan line are provided. A signal input to the end of the scan line is switched from the selection signal to the non-selection signal at the same or substantially the same time as the transistor is turned on. The non-selection signal is input not only from one end but also from both ends of the scan line. This makes it possible to inhibit the potentials of portions in the scan line from being changed at different times.

公开(公告)号：US20210201834A1

公开(公告)日：2021-07-01

申请号：US17191807

申请日：2021-03-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G09G3/34 ,  G09G3/36

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：US20210167096A1

公开(公告)日：2021-06-03

申请号：US17172213

申请日：2021-02-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE

IPC: H01L27/12 ,  G09G3/3233 ,  G09G3/3275 ,  H01L27/06 ,  H01L33/62

Abstract: An object is to prevent an operation defect and to reduce an influence of fluctuation in threshold voltage of a field-effect transistor. A field-effect transistor, a switch, and a capacitor are provided. The field-effect transistor includes a first gate and a second gate which overlap with each other with a channel formation region therebetween, and the threshold voltage of the field-effect transistor varies depending on the potential of the second gate. The switch has a function of determining whether electrical connection between one of a source and a drain of the field-effect transistor and the second gate of the field-effect transistor is established. The capacitor has a function of holding a voltage between the second gate of the field-effect transistor and the other of the source and the drain of the field-effect transistor.

公开(公告)号：US20210026174A1

公开(公告)日：2021-01-28

申请号：US17061876

申请日：2020-10-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroyuki MIYAKE ,  Makoto KANEYASU

IPC: G02F1/1343 ,  G09F9/30 ,  G09G3/36 ,  H01L29/786 ,  H01L27/12 ,  G02F1/1362

Abstract: A display device in which parasitic capacitance between wirings can be reduced is provided. Furthermore, a display device in which display quality is improved is provided. Furthermore, a display device in which power consumption can be reduced is provided.
The display device includes a signal line, a scan line, a first electrode, a second electrode, a third electrode, a first pixel electrode, a second pixel electrode, and a semiconductor film. The signal line intersects with the scan line, the first electrode is electrically connected to the signal line, the first electrode has a region overlapping with the scan line, the second electrode faces the first electrode, the third electrode faces the first electrode, the first pixel electrode is electrically connected to the second electrode, the second pixel electrode is electrically connected to the third electrode, the semiconductor film is in contact with the first electrode, the second electrode, and the third electrode, and the semiconductor film is provided between the scan line and the first electrode to the third electrode.

公开(公告)号：US20200321362A1

公开(公告)日：2020-10-08

申请号：US16910196

申请日：2020-06-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Hiroyuki MIYAKE ,  Hideaki SHISHIDO ,  Jun KOYAMA

IPC: H01L27/12 ,  H01L29/786

Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode. The second light-transmitting conductive film is formed over the same surface as the light-transmitting semiconductor film of the transistor and is a metal oxide film containing a dopant.

公开(公告)号：US20200257402A1

公开(公告)日：2020-08-13

申请号：US16861280

申请日：2020-04-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroyuki MIYAKE

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch panel with higher sensing accuracy or higher detection sensitivity is provided. The touch panel includes a first conductive layer, a second conductive layer, a plurality of display elements, and a scan line. In a plan view, the first conductive layer has an outline including a first portion that is linear and parallel to a first direction. In the plan view, the second conductive layer has an outline including a second portion that is linear and parallel to the first direction. The first portion and the second portion face each other. The display element is in a position not overlapping with the first conductive layer nor the second conductive layer. The scan line has a portion extending in a second direction. An angle between the first direction and the second direction is greater than or equal to 30° and less than or equal to 60°.

公开(公告)号：US20200251054A1

公开(公告)日：2020-08-06

申请号：US16854029

申请日：2020-04-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Seiko INOUE ,  Hiroyuki MIYAKE

IPC: G09G3/3233 ,  H01L27/12

Abstract: A light-emitting device in which variation in luminance of pixels is suppressed. A light-emitting device includes at least a transistor, a first wiring, a second wiring, a first switch, a second switch, a third switch, a fourth switch, a capacitor, and a light-emitting element. The first wiring and a first electrode of the capacitor are electrically connected to each other through the first switch. A second electrode of the capacitor is connected to a first terminal of the transistor. The second wiring and a gate of the transistor are electrically connected to each other through the second switch. The first electrode of the capacitor and the gate of the transistor are electrically connected to each other through the third switch. The first terminal of the transistor and an anode of the light-emitting element are electrically connected to each other through the fourth switch.