公开(公告)号：US20230046927A1

公开(公告)日：2023-02-16

申请号：US17975920

申请日：2022-10-28

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：US20220321006A1

公开(公告)日：2022-10-06

申请号：US17621338

申请日：2020-06-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki INOUE ,  Kousuke SASAKI ,  Yuto YAKUBO ,  Kei TAKAHASHI

IPC: H02M3/156 ,  H02H7/18 ,  H01L27/12 ,  H01L29/786

Abstract: A novel oscillator, an amplifier circuit, an inverter circuit, an amplifier circuit, a battery control circuit, a battery protection circuit, a power storage device, a semiconductor device, an electric device, and the like are provided. The semiconductor device includes an oscillator including a first transistor containing a metal oxide, and a second transistor to a fifth transistor, in which a first potential is supplied to a gate of the second transistor and a gate of the third transistor when the first transistor is turned on, and the first potential is held when the first transistor is turned off. The oscillator supplies a first signal based on the first potential to a first circuit. The first circuit performs at least one of shaping and amplification on the first signal. The second transistor and the fourth transistor are connected in series, and the third transistor and the fifth transistor are connected in series. A source or a drain of the third transistor is electrically connected to a gate of the fourth transistor, and a source or a drain of the fourth transistor is electrically connected to the gate of the third transistor.

公开(公告)号：US20220302880A1

公开(公告)日：2022-09-22

申请号：US17632284

申请日：2020-08-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Takayuki IKEDA

IPC: H03F1/26 ,  H03F3/387 ,  H03F3/00

Abstract: A semiconductor device including an amplifier with improved accuracy is provided. The semiconductor device includes a switch, a capacitor, a chopping circuit, and the amplifier. The amplifier includes a non-inverting input terminal, an inverting input terminal, an inverting output terminal, and a non-inverting output terminal. The semiconductor device, with use of the switch and the capacitor, has a function of sampling and holding a first potential and a second potential input in a first period. The chopping circuit is provided on each of the input terminal side and the output terminal side of the amplifier, and the first potential and the second potential are each input to either one of the non-inverting input terminal and the inverting input terminal in a second period. In a third period, the first potential and the second potential are each input to either one of the non-inverting input terminal and the inverted input terminal, which is different from the second period. In a similar manner, the inverting output terminal and non-inverting output terminal are replaced by the chopping circuit in the second period and the third period to be output from the semiconductor device.

公开(公告)号：US20220299831A1

公开(公告)日：2022-09-22

申请号：US17837711

申请日：2022-06-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: G02F1/1362 ,  G02F1/1368 ,  G02F1/137 ,  G09G3/36 ,  G09G3/20 ,  G02F1/133

Abstract: A display apparatus in which a high voltage can be supplied to a display device is provided. The display apparatus includes a data generation circuit, a source driver circuit, and a pixel. The source driver circuit is electrically connected to the pixel through first and second wirings functioning as signal lines. The pixel includes a display device that is a liquid crystal device, a potential of one electrode of the display device can be a potential of the first wiring, and a potential of the other electrode of the display device can be a potential of the second wiring. The image data generation circuit has a function of generating digital image data including first and second data. In the case where image data corresponding to the digital image data is supplied to the pixel, one of the first and second wirings is made to have a potential corresponding to first data, and the other of the first and second wirings is made to have a potential corresponding to the first data. The potential of the first wiring and the potential of the second wiring are interchanged so that frame inversion driving or the like can be performed.

公开(公告)号：US20220059045A1

公开(公告)日：2022-02-24

申请号：US17521100

申请日：2021-11-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hidetomo KOBAYASHI ,  Kei TAKAHASHI ,  Shunpei YAMAZAKI

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1343 ,  H01L29/786 ,  G06F1/16 ,  G09G3/3233 ,  H01L27/12 ,  G02B27/01 ,  H04M1/02

Abstract: A display device with favorable display quality is provided. A display portion where a plurality of pixels is arranged in a matrix is divided into Region A and Region B, i.e., regions on the upstream side and the downstream side of a scanning direction. A signal line for supplying an image signal is provided in each of Region A and Region B. Region A and Region B adjoin each other such that a boundary line showing the boundary between the regions is bent. Bending the boundary line suppresses formation of a stripe in a boundary portion. For example, in a given column, the total number of pixels electrically connected to a signal line in Region A is made different from the total number of pixels electrically connected to a signal line in Region B.

公开(公告)号：US20220011375A1

公开(公告)日：2022-01-13

申请号：US17294780

申请日：2019-11-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Yuki OKAMOTO ,  Minato ITO ,  Takahiro ISHIZU

IPC: G01R31/396 ,  H02J7/00

Abstract: A semiconductor device that tests and/or monitors each of batteries provided in an assembled battery is provided. The semiconductor device includes a hysteresis comparator and a circuit, and the circuit has a function of setting a high-level side threshold voltage and a low-level side voltage of the hysteresis comparator. The circuit includes first and second capacitors. A first terminal of the first capacitor is electrically connected to a high-level side reference potential input terminal of the hysteresis comparator and a first terminal of the second capacitor is electrically connected to a low-level side reference potential input terminal of the hysteresis comparator. After a first reference potential is input to the high-level side reference potential input terminal and a second reference potential is input to the low-level side reference potential input terminal, a negative electrode of a cell is electrically connected to each second terminal of the first and second capacitors, whereby the potential of each first terminal of the first and second capacitors is changed.

公开(公告)号：US20210384906A1

公开(公告)日：2021-12-09

申请号：US17286094

申请日：2019-10-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Yuki OKAMOTO ,  Takahiko ISHIZU ,  Minato ITO

IPC: H03K19/0185

Abstract: A semiconductor device capable of level shifting in a negative potential direction using an n-channel transistor is provided. The semiconductor device includes a first source follower, a second source follower, and a comparator. The first source follower is supplied with a second high power supply potential and a low power supply potential; the second source follower is supplied with a first high power supply potential and the low power supply potential; and a digital signal which expresses a high level or a low level using the second high power supply potential or the first high power supply potential is input to the first source follower. Here, the second high power supply potential is a potential higher than the first high power supply potential, and the first high power supply potential is a potential higher than the low power supply potential. The comparator compares output potentials of the first source follower and the second source follower and outputs a digital signal which expresses a high level or a low level using the first high power supply potential or the low power supply potential.

公开(公告)号：US20210366381A1

公开(公告)日：2021-11-25

申请号：US17393429

申请日：2021-08-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Susumu KAWASHIMA ,  Koji KUSUNOKI ,  Kazunori WATANABE ,  Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Kentaro HAYASHI ,  Shunpei YAMAZAKI

IPC: G09G3/3225 ,  H01L27/32 ,  H01L29/786

Abstract: A display device that can display a high-luminance image is provided. The display device includes a display element and a memory circuit which is electrically connected to a first wiring and a second wiring. First, a reference potential is supplied to the first wiring. Next, a first image signal is supplied to the memory circuit through the second wiring. Then, the second image signal is added to the first image signal by supplying the second image signal to the memory circuit through the first wiring. After that, an image obtained by superimposing an image corresponding to the first image signal and an image corresponding to the second image signal on each other is displayed with the display element.

公开(公告)号：US20210343755A1

公开(公告)日：2021-11-04

申请号：US17377787

申请日：2021-07-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Hideaki SHISHIDO ,  Koji KUSUNOKI

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

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：US20210288124A1

公开(公告)日：2021-09-16

申请号：US17333320

申请日：2021-05-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kouhei TOYOTAKA ,  Kei TAKAHASHI ,  Hideaki SHISHIDO ,  Shunpei YAMAZAKI

IPC: H01L27/32 ,  H01L27/02 ,  H01L51/56 ,  G09G3/20 ,  G06F3/041 ,  H01L27/12 ,  H01L29/66 ,  G09G3/3233

Abstract: A novel display panel that is highly convenient or reliable is provided. The display panel includes a display region, and the display region includes a first group of pixels, a second group of pixels, a third group of pixels, a fourth group of pixels, a first scan line, a second scan line, a first signal line, and a second signal line. The first group of pixels include a first pixel and are arranged in a row direction. The second group of pixels include a second pixel and are arranged in the row direction. The third group of pixels include a first pixel and are arranged in a column direction that intersects the row direction. The fourth group of pixels include a second pixel and are arranged in the column direction. The first signal line is electrically connected to the third group of pixels and the second signal line is electrically connected to the fourth group of pixels. The first scan line is electrically connected to the first group of pixels and the second scan line is electrically connected to the second group of pixels.