Semiconductor Energy Laboratory Co., Ltd.

Makoto Kaneyasu

Hiroyuki Miyake

Kouhei Toyotaka

Hideaki Shishido

Kazunori Watanabe

Jun Koyama

Koji Kusunoki

Hikaru Harada

Daisuke Kubota

Masashi Fujita

Toru Tanabe

Seiko Inoue

A display device in which parasitic capacitance between wirings can be reduced is provided. Furthermore, a display device in which display quality is improved is provided. Furthermore, a display device in which power consumption can be reduced is provided. The display device includes a signal line, a scan line, a first electrode, a second electrode, a third electrode, a first pixel electrode, a second pixel electrode, and a semiconductor film. The signal line intersects with the scan line, the first electrode is electrically connected to the signal line, the first electrode has a region overlapping with the scan line, the second electrode faces the first electrode, the third electrode faces the first electrode, the first pixel electrode is electrically connected to the second electrode, the second pixel electrode is electrically connected to the third electrode, the semiconductor film is in contact with the first electrode, the second electrode, and the third electrode, and the semiconductor film is provided between the scan line and the first electrode to the third electrode.

Display device

To provide an input device and an input/output device with high detection sensitivity. The input device includes a first transistor, a second transistor, a capacitor, a node, a first wiring, a second wiring, a third wiring, and a fourth wiring. The first transistor includes a first gate and a second gate. The first and second gates of the first transistor overlap with each other with a semiconductor film therebetween. The second gate of the first transistor is electrically connected to the node. The first wiring is electrically connected to the second wiring through the first transistor. The third wiring is electrically connected to the node through the second transistor. A first terminal of the capacitor is electrically connected to the node, and a second terminal of the capacitor is electrically connected to the fourth wiring.

Semiconductor device comprising a sensing unit

A novel liquid crystal display device is provided. Two pixels each include a transistor that includes a back gate. The transistor is connected to the common gate line and data line. A threshold voltage is controlled by a control signal supplied to a back gate so that while data is written to one pixel, the transistor of the other pixel is not turned on. The aperture ratio is improved by reducing the number of wirings connected to the pixel and increasing the frequency of the control signal supplied to the back gate.

Liquid crystal display device and electronic device

Provided is a display device with high resolution, high display quality, or high aperture ratio. A pixel includes three subpixels and is electrically connected to two gate lines. One of the gate lines is electrically connected to a gate of a transistor included in each of the two subpixels, and the other gate line is electrically connected to a gate of a transistor included in the other subpixel. Display elements of the three subpixels are arranged in the same direction. Three pixel electrodes of the three subpixels are arranged in the same direction.

An input/output device is provided. The input/output device includes a first pixel electrode, a second pixel electrode, a first common electrode, a second common electrode, a liquid crystal, a first insulating film, a second insulating film, and a transistor. The first common electrode can serve as one electrode of a sensor element. The second common electrode can serve as the other electrode of the sensor element. The transistor includes a first gate, a second gate, and a semiconductor layer. The pixel electrode, the common electrodes, and the second gate are positioned on different planes. The second gate contains one or more kinds of metal elements included in the semiconductor layer. The second gate, the pixel electrode, and the common electrodes preferably contain one or more kinds of metal elements included in the semiconductor layer.

Input/output device and electronic device

To provide a light-emitting device capable of suppressing the display of an afterimage. A plurality of pixels arranged in n rows and m columns (n and m are each an integer of 2 or more) is supplied with a first signal containing image data and a second signal for initializing the pixels. Each pixel includes a first transistor for controlling the input of the first signal and a second transistor for controlling the input of the second signal. The first transistor in a k-th row (k is an integer of 1 to n) and the second transistor in a k+1-th row are turned on at the same time, so that the pixels are initialized and display images effectively.

Light-emitting device

To provide a touch panel in which a decrease in display quality is suppressed. The touch panel includes a touch sensor and a display element. The touch sensor includes a transistor and a sensor element. The transistor is electrically connected to the sensor element. The sensor element includes a pair of electrodes and a dielectric layer. The dielectric layer is positioned between the pair of electrodes. One of the pair of electrodes is an island-shaped electrode. The display element can display an image toward the touch sensor side. The island-shaped electrode does not overlap with a display region of the display element.

Growing community of inventors

Kanagawa, Japan

Makoto Kaneyasu