公开(公告)号：US20240215425A1

公开(公告)日：2024-06-27

申请号：US18558085

申请日：2022-04-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiromichi GODO ,  Kazuki TSUDA ,  Hidefumi RIKIMARU ,  Yoshiyuki KUROKAWA

IPC: H10K59/95 ,  G09G3/3225 ,  H01L25/18 ,  H10K59/80

CPC classification number: H10K59/95 ,  G09G3/3225 ,  H01L25/18 ,  H10K59/87 ,  G09G2300/0842 ,  G09G2310/08

Abstract: A display apparatus having a novel structure is provided. A plurality of display panels, a fixing member having a curved surface, and a housing storing the fixing member are included. The display panel includes a display portion including a pixel circuit, a non-display portion provided to surround the display portion, a gate driver circuit for driving the pixel circuit, and a source driver circuit. The gate driver circuit is provided at a position overlapping with the display portion. The source driver circuit is provided at a position overlapping with the non-display portion. The plurality of display panels are fixed along the curved surface of the fixing member.

公开(公告)号：US20240138167A1

公开(公告)日：2024-04-25

申请号：US18278199

申请日：2022-02-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromichi GODO ,  Yoshiyuki KUROKAWA ,  Kouhei TOYOTAKA ,  Kazuki TSUDA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU

IPC: H10K39/34 ,  G06F3/01 ,  G09G3/3208 ,  H10K59/65

CPC classification number: H10K39/34 ,  G06F3/013 ,  G09G3/3208 ,  H10K59/65 ,  G09G2330/021 ,  G09G2354/00 ,  G09G2360/14

Abstract: An electronic device having an eye tracking function is provided. The electronic device includes a display device and an optical system. The display device includes a first light-emitting element, a second light-emitting element, a sensor portion, and a driver circuit portion. The sensor portion includes a light-receiving element. The first light-emitting element has a function of emitting infrared light or visible light. The second light-emitting element has a function of emitting light of a color different from that of light emitted from the first light-emitting element. When the first light-emitting element emits infrared light, the light-receiving element has a function of detecting the infrared light that is emitted from the first light-emitting element and reflected by an eyeball of a user. When the first light-emitting element emits visible light, the light-receiving element has a function of detecting the visible light that is emitted from the first light-emitting element and reflected by the eyeball of the user. The first light-emitting element and the second light-emitting element are placed in one layer. The layer where the first light-emitting element and the second light-emitting element are positioned overlaps with the sensor portion.

公开(公告)号：US20220238560A1

公开(公告)日：2022-07-28

申请号：US17615780

申请日：2020-05-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hitoshi KUNITAKE ,  Kazuki TSUDA

IPC: H01L27/12 ,  H01L29/786

Abstract: Malfunctions of a circuit is prevented and the reliability of a semiconductor device using the circuit is improved. The semiconductor device includes a first transistor, a second transistor, a load, and a wiring having a function of supplying a power supply potential to the load. A semiconductor layer of the first transistor includes an oxide semiconductor. A semiconductor layer of the second transistor includes an oxide semiconductor. A source and a drain of the first transistor are electrically connected to the wiring. A first gate of the first transistor is supplied with a reference potential. A source and a drain of the second transistor are supplied with the reference potential. A first gate of the second transistor is electrically connected to the wiring. The semiconductor layer of the first transistor includes a region overlapping with the wiring. The semiconductor layer of the second transistor includes a region overlapping with the wiring.

公开(公告)号：US20240234310A1

公开(公告)日：2024-07-11

申请号：US18560959

申请日：2022-05-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki KUROKAWA ,  Hiromichi GODO ,  Kazuki TSUDA ,  Kouhei TOYOTAKA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU ,  Hideki UOCHI

IPC: H01L23/528 ,  H01L29/24

CPC classification number: H01L23/528 ,  H01L29/24

Abstract: A novel semiconductor device is provided. In reservoir computing using an input layer, a reservoir layer, and an output layer, variation in threshold voltage between transistors is used as a weight used for product arithmetic processing. Two transistors are provided in one product arithmetic circuit and data u is supplied to gates of the two transistors. Drain current of each of the transistors is determined by the data u and the threshold voltage of the transistor. The difference between the drain currents corresponds to a product arithmetic result. The difference between the drain currents is converted into voltage to be output. A plurality of product arithmetic circuits are connected in parallel to form a product-sum arithmetic circuit.

公开(公告)号：US20230353163A1

公开(公告)日：2023-11-02

申请号：US18018965

申请日：2021-07-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuro KANEMURA ,  Yoshiyuki KUROKAWA ,  Hiromichi GODO ,  Kazuki TSUDA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU

IPC: G09G3/3233 ,  H03M1/46

CPC classification number: H03M1/46 ,  G09G3/3233 ,  H03K5/2472

Abstract: A novel semiconductor device is provided. An analog signal is converted into a digital signal using a comparison portion comparing two current values, a control portion, and a current output digital-analog conversion portion. The control portion has a function of generating a sign bit showing a magnitude relation between the two current values, a function of converting a difference between the two current values into a digital signal by successive approximation, and a function of outputting the sign bit and the digital signal.

公开(公告)号：US20220344334A1

公开(公告)日：2022-10-27

申请号：US17762473

申请日：2020-09-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoru OHSHITA ,  Hitoshi KUNITAKE ,  Kazuki TSUDA

IPC: H01L27/108 ,  H01L27/12 ,  H01L29/786

Abstract: A memory device with large storage capacity is provided. A NAND memory device includes a plurality of connected memory cells each provided with a writing transistor, a reading transistor, and a capacitor. An oxide semiconductor is used in a semiconductor layer of the writing transistor. The reading transistor includes a back gate. When a reading voltage is applied to the back gate, information stored in the memory cell is read out.

公开(公告)号：US20220293049A1

公开(公告)日：2022-09-15

申请号：US17686796

申请日：2022-03-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromichi GODO ,  Yoshiyuki KUROKAWA ,  Kazuki TSUDA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU

IPC: G09G3/3208 ,  H01L27/32

Abstract: A semiconductor device with a high driving speed is provided. The semiconductor device includes first to fourth cells, a converter circuit, and first to fourth wirings. The first and second cells make a first current and a second current each corresponding to the product of first data and second data flow in the first wiring and the second wiring, respectively. The third and fourth cells make base currents in the same amount flow in the first and second wirings. The converter circuit outputs, from an output terminal thereof, a voltage corresponding to the differential current between the sum of the first current and the base current flowing in the first wiring and the sum of the second current and the base current flowing in the second wiring.

公开(公告)号：US20220035980A1

公开(公告)日：2022-02-03

申请号：US17299654

申请日：2019-11-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hitoshi KUNITAKE ,  Kazuki TSUDA ,  Tatsuki KOSHIDA ,  Takeya HIROSE ,  Tomoaki ATSUMI

IPC: G06F30/367

Abstract: A transistor model that achieves precise approximation of transistor electrical characteristics is provided. The transistor model is a field-effect transistor model. A first capacitor is provided between a gate and a source. A second capacitor is provided between the gate and a drain. Each of the first capacitor and the second capacitor is a non-linear capacitor whose capacitance value is determined depending on a gate voltage. The first capacitor may be composed of a plurality of variable capacitors. The second capacitor may be composed of a plurality of variable capacitors. When CV characteristics of the first capacitor and CV characteristics of the second capacitor are adjusted, more precise simulation data is obtained.

公开(公告)号：US20240237374A9

公开(公告)日：2024-07-11

申请号：US18278199

申请日：2022-02-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromichi GODO ,  Yoshiyuki KUROKAWA ,  Kouhei TOYOTAKA ,  Kazuki TSUDA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU

IPC: H10K39/34 ,  G06F3/01 ,  G09G3/3208 ,  H10K59/65

CPC classification number: H10K39/34 ,  G06F3/013 ,  G09G3/3208 ,  H10K59/65 ,  G09G2330/021 ,  G09G2354/00 ,  G09G2360/14

Abstract: An electronic device having an eye tracking function is provided. The electronic device includes a display device and an optical system. The display device includes a first light-emitting element, a second light-emitting element, a sensor portion, and a driver circuit portion. The sensor portion includes a light-receiving element. The first light-emitting element has a function of emitting infrared light or visible light. The second light-emitting element has a function of emitting light of a color different from that of light emitted from the first light-emitting element. When the first light-emitting element emits infrared light, the light-receiving element has a function of detecting the infrared light that is emitted from the first light-emitting element and reflected by an eyeball of a user. When the first light-emitting element emits visible light, the light-receiving element has a function of detecting the visible light that is emitted from the first light-emitting element and reflected by the eyeball of the user. The first light-emitting element and the second light-emitting element are placed in one layer. The layer where the first light-emitting element and the second light-emitting element are positioned overlaps with the sensor portion.

公开(公告)号：US20240231756A9

公开(公告)日：2024-07-11

申请号：US18278451

申请日：2022-02-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki KUROKAWA ,  Hiromichi GODO ,  Kazuki TSUDA ,  Satoru OHSHITA ,  Hidefumi RIKIMARU

IPC: G06F7/523 ,  G06F7/50 ,  G09G3/3208 ,  G11C11/405 ,  H10B12/00 ,  H10K59/121

CPC classification number: G06F7/523 ,  G06F7/50 ,  G09G3/3208 ,  G11C11/405 ,  H10B12/00 ,  H10K59/1213 ,  H10K59/1216

Abstract: A semiconductor device with a novel structure is provided. The semiconductor device includes a cell array performing a product-sum operation of a first layer and a product-sum operation of a second layer in an artificial neural network, a first circuit from which first data is input to the cell array, and a second circuit to which second data is output from the cell array. The cell array includes a plurality of cells. The cell array includes a first region and a second region. In a first period, the first region is supplied with the t-th (t is a natural number greater than or equal to 2) first data from the first circuit and outputs the t-th second data according to the product-sum operation of the first layer to the second circuit. In the first period, the second region is supplied with the (t+1)-th first data from the first circuit and outputs the (t+1)-th second data according to the product-sum operation of the second layer to the first circuit.