Semiconductor device, semiconductor wafer, and electronic device

    公开(公告)号:US11935961B2

    公开(公告)日:2024-03-19

    申请号:US17284553

    申请日:2019-10-15

    CPC classification number: H01L29/7869 H01L29/24 H01L29/78669 H01L29/78678

    Abstract: A semiconductor device capable of measuring a minute current is provided. The semiconductor device includes an operational amplifier and a diode element. An inverting input terminal of the operational amplifier and an input terminal of the diode element are electrically connected to a first terminal to which current is input, and an output terminal of the operational amplifier and an output terminal of the diode element are electrically connected to a second terminal from which voltage is output. A diode-connected transistor that includes a metal oxide in a channel formation region is used as the diode element. Since the off-state current of the transistor is extremely low, a minute current can flow between the first terminal and the second terminal. Thus, when voltage is output from the second terminal, a minute current that flows through the first terminal can be estimated from the voltage.

    Display device and electronic device

    公开(公告)号:US11935897B2

    公开(公告)日:2024-03-19

    申请号:US18205587

    申请日:2023-06-05

    CPC classification number: H01L27/1225 G02F1/13624 H01L27/124 H01L27/1255

    Abstract: A display device capable of performing proper display without image signal conversion is provided. In the case of high-resolution display, individual data is supplied to each pixel through a first signal line and a first transistor included in each pixel. In the case of low-resolution display, the same data is supplied to a plurality of pixels through a second signal line and a second transistor electrically connected to the plurality of pixels. When the number of image signals to be displayed is more than one and the image signals support different resolutions, display can be performed without up conversion or down conversion by switching an image signal supply path as described above.

    Display Device and Electronic Device
    319.
    发明公开

    公开(公告)号:US20240090306A1

    公开(公告)日:2024-03-14

    申请号:US18511166

    申请日:2023-11-16

    Abstract: A display device having a biometric authentication function is provided. A highly convenient display device is provided. The display device includes a first substrate, a light guide plate, a plurality of first light-emitting elements, a second light-emitting element, and a plurality of light-receiving elements. The light guide plate includes a first portion having a first surface and a second portion having a second surface that connects with the first surface and has a different normal direction from the first surface. The first light-emitting elements and the light-receiving elements are provided between the first substrate and the light guide plate. The first light-emitting elements have a function of emitting first light through the light guide plate, and the second light-emitting element has a function of emitting second light to a side surface of the light guide plate. The light-receiving elements have a function of receiving the second light and converting the second light to an electric signal. The first light includes visible light, and the second light includes infrared light.

    DISPLAY DEVICE AND MANUFACTURING METHOD OF DISPLAY DEVICE

    公开(公告)号:US20240090303A1

    公开(公告)日:2024-03-14

    申请号:US18273085

    申请日:2022-01-18

    CPC classification number: H10K59/771 H10K39/34 H10K59/1201

    Abstract: A display device having a function of detecting an object that is in contact with or approaches a display portion is provided. The display device includes a light-emitting element and a light-receiving element. The light-emitting element includes a first pixel electrode, a first functional layer, a light-emitting layer, a common layer, and a common electrode. The light-receiving element includes a second pixel electrode, a second functional layer, a light-receiving layer, the common layer, and the common electrode. The first functional layer includes one of a hole-injection layer and an electron-injection layer. The second functional layer includes one of a hole-transport layer and an electron-transport layer. The common layer has a function of the other of the hole-injection layer and the electron-injection layer in the light-emitting element and has a function of the other of the hole-transport layer and the electron-transport layer in the light-receiving element.

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