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Transistor, semiconductor device, and electronic device

專利號(hào)
US10096720B2
公開(kāi)日期
2018-10-09
申請(qǐng)人
Semiconductor Energy Laboratory Co., Ltd.（JP Atsugi-shi, Kanagawa-ken）
發(fā)明人
Yoshinori Ando
IPC分類
H01L27/12; H01L29/786; H01L29/66
技術(shù)領(lǐng)域
layer,transistor,insulating,electrode,in,109_1b,oxide,be,or,wiring
地域： Atsugi-shi, Kanagawa-ken

摘要

To provide a semiconductor device with high design flexibility. A first transistor and a second transistor having different electrical characteristics from those of the first transistor are provided over the same layer without significantly increasing the number of manufacturing steps. A semiconductor layer where a channel of the first transistor is formed and a semiconductor layer where a channel of the second transistor is formed are formed using semiconductor materials having different electron affinities. When an oxide semiconductor is used for the semiconductor layer, an insulating layer containing excess oxygen is used as an insulating layer below the semiconductor layer. By increasing the thickness of the insulating layer, a large amount of oxygen can be supplied to the semiconductor layer.

說(shuō)明書

A display module is described as an example of a semiconductor device using any of the above-described transistors. In a display module 6000 in FIG. 50, a touch sensor 6004 connected to an FPC 6003, a display panel 6006 connected to an FPC 6005, a backlight unit 6007, a frame 6009, a printed circuit board 6010, and a battery 6011 are provided between an upper cover 6001 and a lower cover 6002. Note that the backlight unit 6007, the battery 6011, the touch sensor 6004, and the like are not provided in some cases.

The semiconductor device of one embodiment of the present invention can be used for, for example, the touch sensor 6004, the display panel 6006, an integrated circuit mounted on the printed circuit board 6010, and the like. For example, the above-described display device can be used in the display panel 6006.

The shapes and sizes of the upper cover 6001 and the lower cover 6002 can be changed as appropriate in accordance with the sizes of the touch sensor 6004, the display panel 6006, and the like.

The touch sensor 6004 can be a resistive touch sensor or a capacitive touch sensor and may be formed to overlap with the display panel 6006. The display panel 6006 can have a touch sensor function. For example, an electrode for a touch sensor may be provided in each pixel of the display panel 6006 so that a capacitive touch panel function is added. Alternatively, a photosensor may be provided in each pixel of the display panel 6006 so that an optical touch sensor function is added. In the case where the touch sensor 6004 is not necessarily provided, the touch sensor 6004 can be omitted.

權(quán)利要求

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