Abstract: A vehicle includes a vehicle body, a coupling device, a vibration generator, a sensor, and a controller. The coupling device is configured to couple a towed object and the vehicle body to each other. The vibration generator is provided on the vehicle body and configured to vibrate the vehicle body. The sensor is provided on the vehicle body and configured to measure the vibration of the vehicle body. The controller is configured to control the vibration generator. The controller includes one or more processors and one or more memories coupled to the one or more processors. The one or more processors are configured to execute processing including: causing the vibration generator to generate a first vibration; measuring a second vibration characteristic; and comparing the first vibration characteristic and the second vibration characteristic to determine a coupling state between the vehicle body and the towed object.

Abstract: The purpose of the invention is to form a flexible display device where the substrate is made of resin, wherein the TFT can be annealed in high temperature; consequently, a reliability of the TFT is improved. The concrete measure is as follows. A display device having a pixel electrode and a TFT including a semiconductor layer on a substrate comprising: a source region of the semiconductor layer connects with a source electrode, a drain region of the semiconductor layer connects with a drain electrode; the pixel electrode connects with the source electrode; the drain electrode connects with a video signal line; a distance between the drain electrode and the substrate is smaller than a distance between the semiconductor and the substrate, the semiconductor layer is formed between the pixel electrode and the substrate.

Abstract: The purpose of the invention is to form a flexible display device where the substrate is made of resin, wherein the TFT can be annealed in high temperature; consequently, a reliability of the TFT is improved. The concrete measure is as follows. A display device having a pixel electrode and a TFT including a semiconductor layer on a substrate comprising: a source region of the semiconductor layer connects with a source electrode, a drain region of the semiconductor layer connects with a drain electrode; the pixel electrode connects with the source electrode; the drain electrode connects with a video signal line; a distance between the drain electrode and the substrate is smaller than a distance between the semiconductor and the substrate, the semiconductor layer is formed between the pixel electrode and the substrate.