公开(公告)号：US20200168739A1

公开(公告)日：2020-05-28

申请号：US16778336

申请日：2020-01-31

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Masashi Tsubuku ,  Kosei Noda ,  Kouhei Toyotaka ,  Kazunori Watanabe ,  Hikaru Harada

IPC: H01L29/786 ,  H01L29/423 ,  H01L29/417 ,  H01L27/12 ,  H01L29/24 ,  H01L27/108 ,  G06F15/76 ,  H01L49/02 ,  H01L27/11

Abstract: An object is to provide a memory device including a memory element that can be operated without problems by a thin film transistor with a low off-state current. Provided is a memory device in which a memory element including at least one thin film transistor that includes an oxide semiconductor layer is arranged as a matrix. The thin film transistor including an oxide semiconductor layer has a high field effect mobility and low off-state current, and thus can be operated favorably without problems. In addition, the power consumption can be reduced. Such a memory device is particularly effective in the case where the thin film transistor including an oxide semiconductor layer is provided in a pixel of a display device because the memory device and the pixel can be formed over one substrate.

公开(公告)号：US09780121B2

公开(公告)日：2017-10-03

申请号：US14639336

申请日：2015-03-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kazunori Watanabe ,  Hiroyuki Miyake ,  Shunpei Yamazaki

IPC: H01L27/12

CPC classification number: H01L27/124 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04102 ,  G06F2203/04103 ,  H01L27/1225 ,  H01L27/1255

Abstract: To provide a touch sensor including a transistor and a capacitor in which the transistor and the capacitor are electrically connected to each other, the capacitor includes a pair of electrodes and a dielectric layer, the dielectric layer is located between the pair of electrodes, and one of the pair of electrodes includes an oxide conductor layer. To provide a touch panel including the touch sensor, a light-blocking layer, and a display element in which the touch sensor is located more on the display surface side of the touch panel than on the display element side, the light-blocking layer is located more on the display surface side than on the touch sensor side, the display element includes a portion overlapping with the capacitor, and the light-blocking layer includes a portion overlapping with the transistor.

公开(公告)号：US08947153B2

公开(公告)日：2015-02-03

申请号：US13668426

申请日：2012-11-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Jun Koyama ,  Kazunori Watanabe

IPC: H03K17/687 ,  H03K17/73 ,  H01L29/423 ,  H01L27/12 ,  H01L29/24 ,  H01L29/786 ,  H01L29/22 ,  H01L29/739

CPC classification number: H01L29/24 ,  H01L27/1225 ,  H01L29/22 ,  H01L29/42392 ,  H01L29/7391 ,  H01L29/78642 ,  H01L29/7869 ,  H03K17/687 ,  H03K17/73

Abstract: An object is to provide a semiconductor device that can realize a function of a thyristor without complication of the process. A semiconductor device including a memory circuit that stores a predetermined potential by reset operation and initialization operation is provided with a circuit that rewrite data in the memory circuit in accordance with supply of a trigger signal. The semiconductor device has a structure in which a current flowing through the semiconductor device is supplied to a load by rewriting data in the memory circuit, and thus can function as a thyristor.

Abstract translation: 目的在于提供一种可以实现晶闸管功能的半导体器件，而不会使工艺复杂化。 包括通过复位操作和初始化操作来存储预定电位的存储电路的半导体器件设置有根据触发信号的提供重写存储电路中的数据的电路。 半导体器件具有这样的结构，其中流过半导体器件的电流通过重写存储器电路中的数据而被提供给负载，并且因此可以用作晶闸管。

公开(公告)号：US20140021904A1

公开(公告)日：2014-01-23

申请号：US13930099

申请日：2013-06-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Kazunori Watanabe ,  Minoru Takahashi

IPC: H02J7/00

CPC classification number: H02J7/0083 ,  H01L2924/0002 ,  H02J7/0078 ,  H01L2924/00

Abstract: A charging device used for charging a storage battery includes a first circuit that generates a current which depends on a charging current of the storage battery; a second circuit in which charge is accumulated by periodical supply of the current which depends on the charging current; and a third circuit that outputs a signal indicating completion of charge of the storage battery when the potential of the second circuit reaches a reference potential. The second circuit includes a capacitor and a transistor in which an oxide semiconductor is used for a channel formation region. The transistor is turned on or off in response to a pulse signal input to a gate of the transistor. The capacitor accumulates charge when the current depending on the charging current flows through the transistor.

Abstract translation: 用于对蓄电池充电的充电装置包括产生取决于蓄电池的充电电流的电流的第一电路; 第二电路，其通过依赖于充电电流的电流的周期性供应来累积电荷; 以及第三电路，当第二电路的电位达到参考电位时，输出表示蓄电池的充电完成的信号。 第二电路包括电容器和其中氧化物半导体用于沟道形成区域的晶体管。 响应于输入到晶体管的栅极的脉冲信号，晶体管导通或截止。 当根据充电电流流动的电流流过晶体管时，电容器会蓄积电荷。

公开(公告)号：US12254071B2

公开(公告)日：2025-03-18

申请号：US18237437

申请日：2023-08-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Yoshimoto ,  Susumu Kawashima ,  Koji Kusunoki ,  Kazunori Watanabe

IPC: G06F3/041 ,  G06F21/32 ,  G06V40/13

Abstract: A semiconductor device including a biometric recognition function and a touch sensor or near touch sensor function is provided. The semiconductor device includes a light-emitting device and an imaging device. The imaging device includes a gate driver circuit and m rows of pixels (m is an integer more than or equal to 2). The gate driver circuit includes a plurality of first register circuits and second register circuits whose number is less than that of the first register circuits. The first register circuits are connected with each other in series and the second register circuits are connected with each other in series. The gate driver circuit has a function of operating in the first mode and the second mode. In the first mode, the first register circuits are in the on state and the second register circuits are in the off state, and in the second mode, the second register circuits are in the on state and the first register circuits are in the off state.

公开(公告)号：US12033987B2

公开(公告)日：2024-07-09

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

CPC classification number: H01L25/0753 ,  H01L27/1207 ,  H01L27/1225 ,  H01L29/78648 ,  H01L29/7869 ,  H01L33/62

Abstract: A display device with high display quality and 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, and then 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. One of a source and a drain of the first transistor is electrically connected to the first light-emitting diode through the second conductive layer. One of a source and a drain of the second transistor is electrically connected to the second light-emitting diode through the third conductive layer. The first conductive layer supplied with a constant potential is electrically connected to the other electrodes of the first and second light-emitting diodes through the fourth conductive layer.

公开(公告)号：US11984064B2

公开(公告)日：2024-05-14

申请号：US18018051

申请日：2021-07-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Susumu Kawashima ,  Koji Kusunoki ,  Kazunori Watanabe ,  Satoshi Yoshimoto

IPC: G09G3/32 ,  H10K59/131

CPC classification number: G09G3/32 ,  H10K59/131 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/02 ,  G09G2310/08 ,  G09G2330/021

Abstract: A display apparatus having a wide range of threshold voltage compensation function is provided. In the display apparatus, a p-channel transistor is used as a driving transistor of the light-emitting device. Discharging is performed through a source-drain path while constant voltage is supplied to a gate so that Vth is extracted between the gate and the source. In addition, when a drain potential is set to the sum of forward voltage and a cathode potential of the light-emitting device or a potential sufficiently lower than the sum, it is possible to continue the discharging even when Vth is positive voltage. That is, compensation can be performed even in the case where Vth variation occurs from positive voltage to negative voltage.

公开(公告)号：US11960185B2

公开(公告)日：2024-04-16

申请号：US17041599

申请日：2019-03-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Kouhei Toyotaka ,  Satoshi Yoshimoto ,  Kazunori Watanabe ,  Susumu Kawashima ,  Kei Takahashi

IPC: G09G3/30 ,  G02F1/1362 ,  G09G3/12 ,  G09G3/32 ,  G09G3/36 ,  G02F1/1368

CPC classification number: G02F1/136286 ,  G09G3/32 ,  G09G3/3648 ,  G02F1/1368 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/04 ,  G09G2320/103 ,  G09G2330/021

Abstract: Display data of pixels is updated at different timings. A scan line is connected to a first pixel and a second pixel, a first wiring is connected to the first pixel, and a second wiring is connected to the second pixel. In a first period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is updated is supplied to the first wiring, and setting data for setting a state where the display data of the second pixel is updated is supplied to the second wiring. In a second period, a signal for selecting the first pixel and the second pixel is supplied to the scan line. Setting data for setting a state where the display data of the first pixel is not updated is supplied to the first wiring, and the setting data for setting the state where the display data of the second pixel is updated is supplied to the second wiring. In a third period, the first pixel displays first display data, and the second pixel displays second display data.

公开(公告)号：US11869417B2

公开(公告)日：2024-01-09

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

CPC classification number: G09G3/32 ,  G09G2330/028

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：US11681192B2

公开(公告)日：2023-06-20

申请号：US17363552

申请日：2021-06-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Koji Kusunoki ,  Kazunori Watanabe ,  Susumu Kawashima

IPC: G02F1/1368 ,  G02F1/1362 ,  H10K59/121

CPC classification number: G02F1/1368 ,  G02F1/136286 ,  H10K59/1213

Abstract: A display device capable of performing image processing is provided.
Each pixel is provided with a memory circuit, and desired correction data is held in the memory circuit. The correction data is calculated in an external device and written into each pixel. The correction data is added to image data owing to capacitive coupling, and the resulting data is supplied to a display element. Thus, a corrected image can be displayed with the display element. The correction enables image upconversion or can compensate for an image quality reduction due to characteristics variations of transistors included in pixels.