公开(公告)号：US11227543B2

公开(公告)日：2022-01-18

申请号：US16489716

申请日：2018-02-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shintaro Harada ,  Yoshiyuki Kurokawa ,  Takeshi Aoki ,  Yuki Okamoto ,  Hiroki Inoue ,  Koji Kusunoki ,  Yosuke Tsukamoto ,  Katsuki Yanagawa ,  Kei Takahashi ,  Shunpei Yamazaki

IPC: G06F3/041 ,  G09G3/3225 ,  G06F1/16 ,  G06K9/00 ,  G06N3/04 ,  G06N3/08 ,  G09G5/22 ,  G09G3/36

Abstract: An electronic device capable of efficiently recognizing a handwritten character is provided.
The electronic device includes a first circuit, a display portion, and a touch sensor. The first circuit includes a neural network. The display portion includes a flexible display. The touch sensor has the function of outputting an input handwritten character as image information to the first circuit. The first circuit has the function of analyzing the image information and converting the image information into character information, and a function of displaying an image including the character information on the display portion. The analysis is performed by inference through the use of the neural network.

公开(公告)号：US10937387B2

公开(公告)日：2021-03-02

申请号：US15656725

申请日：2017-07-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuki Okamoto

IPC: G09G5/10 ,  G09G3/36 ,  H01L27/32 ,  G02F1/1335 ,  G02F1/1368 ,  G09G3/3233 ,  H01L51/00 ,  G02F1/1333 ,  G02F1/1362 ,  H01L27/12 ,  H01L29/786

Abstract: An information terminal capable of automatically adjusting the brightness of a display portion in accordance with bending of the display portion is provided. The information terminal includes a display portion that includes a first pixel, a second pixel, and a sensor element. The first pixel includes a liquid crystal element. The second pixel includes a light-emitting element. The sensor element includes a first bend sensor whose resistance is changed in accordance with bending of the display portion in a convex direction and a second bend sensor whose resistance is changed in accordance with bending of the display portion in a concave direction. The luminance of the light-emitting element is controlled in accordance with an output of the sensor element.

公开(公告)号：US10923059B2

公开(公告)日：2021-02-16

申请号：US16680848

申请日：2019-11-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuki Okamoto

IPC: G09G3/36 ,  G09G3/32 ,  G09G3/30 ,  G09G3/20

Abstract: An operation method of a display device with high visibility is to be provided. The display device is an electronic device including a first display element, a second display element, an optical sensor, and a gain calculation circuit. In the electronic device, the illuminance of external light is obtained with the optical sensor, and depending on the illuminance, images displayed using the first display element and the second display element are corrected. The gain calculation circuit obtains the illuminance and calculates a gain value depending on the illuminance. In particular, the gain value is calculated for each of the first display element and the second display element. Furthermore, the gain calculation circuit performs dimming and toning on image data displayed using the first display element and the second display element by multiplying the image data by the gain values or values corresponding to the gain values.

公开(公告)号：US10853587B2

公开(公告)日：2020-12-01

申请号：US15613499

申请日：2017-06-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuki Okamoto

IPC: G06F3/041 ,  G06F40/58 ,  H04B1/034 ,  H04H20/76 ,  H04N5/91 ,  H04N7/173 ,  H04W88/06 ,  H04N7/14

Abstract: An information terminal with low power consumption is provided. The information terminal includes a liquid crystal element, a light-emitting element, a first transistor, and a touch sensor. The touch sensor includes a photodiode, a second transistor, and a third transistor. The first transistor has a function of controlling a current flowing through the light-emitting element. The photodiode is electrically connected to a gate of the third transistor through the second transistor. A gate of the first transistor is electrically connected to the gate of the third transistor through at least one transistor.

公开(公告)号：US10770010B2

公开(公告)日：2020-09-08

申请号：US16515215

申请日：2019-07-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yuki Okamoto

IPC: G09G3/36 ,  H01L27/12 ,  G09G3/3233 ,  H01L27/32 ,  H01L29/786

Abstract: An information terminal capable of switching display and non-display of images by strain. The information terminal includes a display portion and a strain sensor. The display portion includes a liquid crystal element, a light-emitting element, and a first and a second transistors. The strain sensor includes a strain sensor element and a resistor. The first transistor has a function of controlling current flowing into the light-emitting element. The strain sensor element has a function as a variable resistor. A first terminal of the strain sensor element is electrically connected to a first terminal of the resistor. A gate of the first transistor is electrically connected to a first terminal of the strain sensor element via the second transistor.

公开(公告)号：US10564698B2

公开(公告)日：2020-02-18

申请号：US15677181

申请日：2017-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuki Okamoto ,  Yoshiyuki Kurokawa

IPC: G06F1/00 ,  G06F1/3234 ,  G06F1/3287 ,  G06F1/3293 ,  G06F1/3296 ,  G06F13/42 ,  G11C11/40 ,  H03K19/0175

Abstract: A method for controlling power supply in a semiconductor device including a CPU and a PLD which can hold data even in an off state is provided. The semiconductor device includes a processor, a programmable logic device, and a state control circuit. The programmable logic device includes a first nonvolatile memory circuit and has a function of holding data obtained by arithmetic processing of the programmable logic device when it is turned off. The state control circuit obtains data on the amount of a task performed by the programmable logic device in accordance with an operation of the processor. The programmable logic device detects the state of progress of the task and outputs a signal to the state control circuit. The state control circuit monitors the amount of the task and the state of progress of the task and turns off the programmable logic device when the task is completed.

公开(公告)号：US10134789B2

公开(公告)日：2018-11-20

申请号：US14746926

申请日：2015-06-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuki Okamoto ,  Yoshiyuki Kurokawa ,  Hiroki Inoue ,  Takuro Ohmaru

IPC: H01L27/146 ,  H01L29/786 ,  H01L31/105 ,  H01L31/0272

Abstract: An imaging device with high productivity and improved dynamic range is provided. The imaging device includes a pixel driver circuit and a photoelectric conversion element including a p-type semiconductor, an n-type semiconductor, and an i-type semiconductor. In a plan view, the total area of a part of the i-type semiconductor overlapped with neither a metal material nor a semiconductor material constituting the pixel driver circuit is preferably greater than or equal to 65%, more preferably greater than or equal to 80%, and still more preferably greater than or equal to 90% of the area of the whole i-type semiconductor. Plural photoelectric conversion elements are provided in the same semiconductor, whereby a process for separating the photoelectric conversion elements can be omitted. The i-type semiconductors in the plural photoelectric conversion elements are separated from each other by the p-type semiconductor or the n-type semiconductor.

公开(公告)号：US10033379B2

公开(公告)日：2018-07-24

申请号：US15412094

申请日：2017-01-23

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki Kurokawa ,  Yuki Okamoto

IPC: G11C5/14 ,  H03K17/687 ,  H03K3/03 ,  H03L7/099 ,  H01L27/12 ,  H03B5/00 ,  G11C7/12

Abstract: To generate an analog current without restriction by a power supply voltage. A semiconductor device includes a first node, a second node, a first- to an n-th-stage power storage element (n is an integer greater than or equal to 2), and a first- to an n-th-stage switch. The capacities of the first- to the n-th-stage power storage element are different from one another. The first- to the n-th-stage power storage element are electrically connected in parallel between the first node and the second node. A first terminal of a k-th stage power storage element (k is an integer greater than or equal to 1 and less than or equal to n) is electrically connected to the first input node via a k-th stage switch. The on/off states of the first- to the n-th-stage switch are controlled by a first to an n-th signal.

公开(公告)号：US20180130434A1

公开(公告)日：2018-05-10

申请号：US15805589

申请日：2017-11-07

Applicant: Semiconductor Energy Laboratory Co, Ltd.

Inventor： Yuki Okamoto

IPC: G09G3/36 ,  G09G3/32

Abstract: An operation method of a display device with high visibility is to be provided. The display device is an electronic device including a first display element, a second display element, an optical sensor, and a gain calculation circuit. In the electronic device, the illuminance of external light is obtained with the optical sensor, and depending on the illuminance, images displayed using the first display element and the second display element are corrected. The gain calculation circuit obtains the illuminance and calculates a gain value depending on the illuminance. In particular, the gain value is calculated for each of the first display element and the second display element. Furthermore, the gain calculation circuit performs dimming and toning on image data displayed using the first display element and the second display element by multiplying the image data by the gain values or values corresponding to the gain values.

公开(公告)号：US09952724B2

公开(公告)日：2018-04-24

申请号：US14686109

申请日：2015-04-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kengo Akimoto ,  Hironobu Takahashi ,  Yuki Okamoto ,  Isamu Shigemori

IPC: G06F3/044 ,  G06F3/041 ,  G09G3/3233 ,  G09G3/36 ,  H01L27/32

CPC classification number: G06F3/044 ,  G06F3/0418 ,  G06F2203/04102 ,  G06F2203/04103 ,  G09G3/3233 ,  G09G3/3648 ,  G09G2320/029 ,  G09G2330/12 ,  G09G2380/02 ,  H01L27/3225 ,  H01L27/323 ,  H01L27/3262 ,  H01L2251/5338

Abstract: A flexible display device with high viewability is provided. The display device includes a first substrate, a second substrate, a first element layer, and a second element layer. The first element layer is positioned between the first substrate and the second substrate. The second element layer is positioned between the first substrate and the second substrate. The first element layer and the second element layer overlap with each other in a region. The first substrate and the second substrate have flexibility. The first element layer includes a display element and a first circuit. The display element is electrically connected to the first circuit. The second element layer includes a sensor element. The sensor element has a function of sensing distortion.