公开(公告)号：US20210343243A1

公开(公告)日：2021-11-04

申请号：US17273818

申请日：2019-08-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: G09G3/3258

Abstract: A display device that can correct the threshold voltage of a driving transistor without a correction of image data is provided. A display device including a pixel provided with a driving transistor, a display element, and a memory circuit and a correction data generation circuit is related. One of a source and a drain of the driving transistor is electrically connected to one electrode of the display element, and a gate of the driving transistor is electrically connected to the memory circuit. In a first period, the correction data generation circuit generates correction data that is data for correcting the threshold voltage of the driving transistor. In a second period, first data is written to the memory circuit. In a third period, second data is supplied to the pixel, whereby third data in which the second data is added to the first data is generated. In a fourth period, an image corresponding to the third data is displayed by the display element.

公开(公告)号：US20210294171A1

公开(公告)日：2021-09-23

申请号：US17339023

申请日：2021-06-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Kei TAKAHASHI

IPC: G02F1/1362 ,  G02F1/1343

Abstract: To achieve a display device that is suitable for increasing in size and to provide a high-resolution display device. In the display device, three or more adjacent gate lines are supplied with the same selection signal. Three or more pixels that adjoin in the column direction are connected to different source lines. In each of the pixels, a transistor including a semiconductor layer is disposed. An inner source line among three or more source lines is disposed to overlap with a conductive layer that functions as a pixel electrode. Part of the semiconductor layer of the transistor is provided between the outer source line and a source line adjacent to the outer source line.

公开(公告)号：US20210150996A1

公开(公告)日：2021-05-20

申请号：US16628107

申请日：2018-06-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Susumu KAWASHIMA

IPC: G09G3/36 ,  G02F1/133 ,  G02F1/1345 ,  G02F1/1362 ,  G02F1/1368

Abstract: A novel and highly convenient or reliable display panel is provided which includes a first driver circuit, a second driver circuit, a first scan line, a second scan line, and a first signal line. The first driver circuit supplies a selection signal. The second driver circuit supplies a predetermined voltage, first data using a voltage greater than or equal to the predetermined voltage, and second data using a voltage less than or equal to the predetermined voltage. The first scan line is selected in a first period. The second scan line adjacent to the first scan line is selected in a third period. The first signal line receives the first data in the first period, the predetermined voltage in a second period, and the second data in the third period. The second period is provided between the first period and the third period.

公开(公告)号：US20210134920A1

公开(公告)日：2021-05-06

申请号：US16633402

申请日：2018-07-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L27/32 ,  H01L27/15 ,  H01L25/065 ,  G09G3/32 ,  G06N3/04 ,  G06N3/063

Abstract: A novel display panel that is highly convenient or reliable is provided. A novel display device is provided. The display panel includes a display region, a first terminal region, and a second terminal region, and the first terminal region is provided not to block the display region and includes a region overlapping with the display region. The first terminal region includes a first group of terminals, and the first group of terminals includes a first terminal. The second terminal region includes a second group of terminals, and the second group of terminals includes a second terminal. The display region includes one group of pixels, another group of pixels, a scan line, and a signal line. The one group of pixels includes a pixel and is arranged in a row direction. The another group of pixels includes the pixel and is arranged in a column direction intersecting the row direction. The scan line is electrically connected to the one group of pixels. The signal line is electrically connected to the another group of pixels, and the signal line is electrically connected to the first terminal and the second terminal.

公开(公告)号：US20210055352A1

公开(公告)日：2021-02-25

申请号：US16980598

申请日：2019-03-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Koji KUSUNOKI ,  Toshiyuki ISA ,  Akihiro CHIDA ,  Ryo YAMAUCHI ,  Kazutaka KURIKI ,  Ryota TAJIMA

IPC: G01R31/36 ,  G01R31/378 ,  G01R31/392 ,  G01R31/3842 ,  H01M10/48 ,  H01M10/0525

Abstract: A control method of a secondary battery in which malfunction is less likely to occur and abnormality detection can be performed with high accuracy is provided. A charge state estimation device of a secondary battery including a device which generates electromagnetic noise, a first detection means which measures a voltage value of a secondary battery electrically connected to the device, a second detection means which measures a current value of the secondary battery electrically connected to the device, a correction means which extracts a causal relationship between electromagnetic noise and a driving pattern from data including multiple electromagnetic noise obtained using the first detection means or the second detection means, and an arithmetic means which calculates a charge rate using a regression model based on data after data correction.

公开(公告)号：US20200177132A1

公开(公告)日：2020-06-04

申请号：US16783306

申请日：2020-02-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI ,  Yoshifumi TANADA

IPC: H03F1/02 ,  H03F3/45 ,  G05F1/46 ,  G05F1/56 ,  H03F1/34

Abstract: Power consumption of a signal processing circuit is reduced. Further, power consumption of a semiconductor device including the signal processing circuit is reduced. The signal processing circuit includes a reference voltage generation circuit, a voltage divider circuit, an operational amplifier, a bias circuit for supplying bias current to the operational amplifier, and first and second holding circuits. The first holding circuit is connected between the reference voltage generation circuit and the bias circuit. The second holding circuit is connected between the voltage divider circuit and a non-inverting input terminal of the operational amplifier. Reference voltage from the reference voltage generation circuit and reference voltage from the voltage divider circuit can be held in the first and second holding circuits, respectively, so that the reference voltage generation circuit can stop operating. Thus, power consumption of the reference voltage generation circuit can be reduced.

公开(公告)号：US20190027507A1

公开(公告)日：2019-01-24

申请号：US16126360

申请日：2018-09-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L27/12 ,  H01L29/786 ,  H01L29/49 ,  H01L29/04 ,  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：US20190012979A1

公开(公告)日：2019-01-10

申请号：US16112833

申请日：2018-08-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kei TAKAHASHI

IPC: G09G3/36 ,  H01L21/78 ,  G06F3/041 ,  G06F3/044 ,  H03F3/45 ,  G11C19/00 ,  H03M1/76 ,  H03M1/66 ,  H03M1/68 ,  H03M1/74

Abstract: A semiconductor device in which variations are controlled is provided. The semiconductor device has a function of converting a digital signal into an analog signal, and includes a digital-analog converter circuit, an amplifier circuit, first to fourth switches, a first output terminal, a second output terminal, and a power source. The amplifier circuit is configured to perform feedback control when the first switch and the fourth switch are on and the second switch and the third switch are off. The amplifier circuit is configured to perform comparison control when the first switch and the fourth switch are off and the second switch and the third switch are on; utilizing this, variations in the digital-analog converter circuit and the amplifier circuit are controlled.

公开(公告)号：US20180204532A1

公开(公告)日：2018-07-19

申请号：US15866880

申请日：2018-01-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hidetomo KOBAYASHI ,  Kei TAKAHASHI ,  Shunpei YAMAZAKI

IPC: G09G3/36 ,  G02F1/1343 ,  G02F1/1362

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：US20180203319A1

公开(公告)日：2018-07-19

申请号：US15868188

申请日：2018-01-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Kei TAKAHASHI

IPC: G02F1/1362 ,  G02F1/1368 ,  G02F1/1335

CPC classification number: G02F1/136286 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/1368 ,  G02F2001/13606 ,  G02F2001/13629 ,  G02F2202/103 ,  G06F3/041 ,  G09G3/3648 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0876 ,  G09G2310/0205 ,  G09G2310/0281 ,  G09G2310/0283

Abstract: A display device that is suitable for increasing in size is provided. A display device with high resolution is provided. The display device has a structure in which two adjacent gate lines are supplied with the same selection signal. In addition, two pixels adjacent in the column direction are connected to respective source lines. Furthermore, one of the two source lines overlaps with a conductive layer functioning as a pixel electrode. Moreover, part of a semiconductor layer of a transistor is provided between the two source lines.