公开(公告)号：US12200950B2

公开(公告)日：2025-01-14

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

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：US20220270548A1

公开(公告)日：2022-08-25

申请号：US17671905

申请日：2022-02-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki Kurokawa ,  Hiromichi Godo ,  Kouhei Toyotaka ,  Kazuki Tsuda ,  Satoru Ohshita ,  Hidefumi Rikimaru

IPC: G09G3/3225 ,  G02B27/01 ,  H01L27/32 ,  G06F3/01 ,  G09G3/00

Abstract: To provide a novel electronic device. The electronic device includes a housing and a display device. The display device includes a first layer, a second layer, and a third layer. The first layer, the second layer, and the third layer are provided in different layers. The first layer includes a driver circuit and an arithmetic circuit. The second layer includes pixel circuits and a cell array. The third layer includes light-receiving devices and light-emitting devices. The pixel circuits each have a function of controlling light emission of the light-emitting device. The driver circuit has a function of controlling the pixel circuits. The arithmetic circuit has a function of performing arithmetic processing on the basis of first data corresponding to currents output from the light-receiving devices and second data corresponding to a potential held in the cell array.

公开(公告)号：US11921919B2

公开(公告)日：2024-03-05

申请号：US17671905

申请日：2022-02-15

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yoshiyuki Kurokawa ,  Hiromichi Godo ,  Kouhei Toyotaka ,  Kazuki Tsuda ,  Satoru Ohshita ,  Hidefumi Rikimaru

IPC: G06F3/01 ,  G02B27/01 ,  G09G3/00 ,  G09G3/3225 ,  H10K59/121 ,  H01L27/12 ,  H01L29/786

CPC classification number: G06F3/013 ,  G02B27/0172 ,  G09G3/002 ,  G09G3/3225 ,  H10K59/1213 ,  G02B2027/0178 ,  G09G2354/00 ,  G09G2360/14 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255 ,  H01L29/78648 ,  H01L29/78651 ,  H01L29/7869

Abstract: To provide a novel electronic device. The electronic device includes a housing and a display device. The display device includes a first layer, a second layer, and a third layer. The first layer, the second layer, and the third layer are provided in different layers. The first layer includes a driver circuit and an arithmetic circuit. The second layer includes pixel circuits and a cell array. The third layer includes light-receiving devices and light-emitting devices. The pixel circuits each have a function of controlling light emission of the light-emitting device. The driver circuit has a function of controlling the pixel circuits. The arithmetic circuit has a function of performing arithmetic processing on the basis of first data corresponding to currents output from the light-receiving devices and second data corresponding to a potential held in the cell array.

公开(公告)号：US11594176B2

公开(公告)日：2023-02-28

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 ,  H01L29/786

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.