Panasonic Liquid Crystal Display Co., Ltd.

Japan Display Inc.

Hitachi Displays, Ltd.

Hirokazu Itakura

Hitoshi Komeno

Tomoaki Takahashi

Yasuyuki Yamada

Nobuyuki Ishige

Sho Yanagisawa

A display device includes a substrate, a display region, a peripheral region, an insulating layer which is disposed on a gate signal line and a conductor, a conductive layer which is disposed on the insulating layer and crosses a plurality of gate signal lines and the conductor in the peripheral region, a first semiconductor film which is disposed between the insulating layer and the conductive layer, and a second semiconductor film which is disposed between the insulating layer and the conductive layer and which is separated from the first semiconductor film. The conductive layer is connected to the plurality of gate signal lines via a plurality of diodes, and the plurality of gate signal lines are arranged in the display region and the peripheral region. A length of the conductor differs from a length of the gate signal line in the display region and the peripheral region.

Display device

A display device includes a substrate, a display region having a pixel switch, and a transparent common electrode, a peripheral region having a gate signal line connected to the pixel switch, and a predetermined connection line, an insulating layer disposed on the gate signal line and the predetermined connection line, a conductive layer, a first semiconductor film disposed between the insulating layer and the conductive layer, and a second semiconductor film disposed between the insulating layer and the conductor layer and separated from the first semiconductor film. The conductor layer is connected to the gate signal line via a pair of diodes. The gate signal line is arranged in the display region and the peripheral region, the predetermined connection line is arranged in the peripheral region, and the transparent common electrode is arranged in the display region. The predetermined connection line is shorter in length than the gate signal line.

A display device includes a substrate, a display region having a pixel switch, and a transparent common electrode, a peripheral region having a gate signal line connected to the pixel switch, and a common connection line connected to the transparent common electrode, an insulating layer, a conductive layer, a first semiconductor film disposed between the insulating layer and the conductive layer, and a second semiconductor film disposed between the insulating layer and the conductor layer and separated from the first semiconductor film. The conductor layer is connected to the gate signal line, and the gate signal line is arranged in the display region and the peripheral region. The common connection line is arranged in the peripheral region and is connected to the transparent common electrode in the peripheral region, and the transparent common electrode is arranged in the display region.

A display device includes a substrate, a display region having a pixel switch, a pixel electrode which is connected to the pixel switch, and a transparent common electrode formed over the substrate, a peripheral region having a gate signal line which is connected to the pixel switch, and a common connection line which is connected to the transparent common electrode, an insulating layer which is disposed on the gate signal line and the common connection line, a conductive layer which is disposed on the insulating layer and crosses the gate signal line and crosses the common connection line in the peripheral region, a first semiconductor film which is disposed between the insulating layer and the conductive layer, and a second semiconductor film which is disposed between the insulating layer and the conductive layer and is separated from the first semiconductor film.

A display device includes: on an insulating substrate, a first conductive layer in which a first signal line and a second signal line adjacent to the first signal line are formed; an insulating layer which is disposed on the first conductive layer; a second conductive layer which is disposed on the insulating layer and in which a ground wire crossing the first signal line and the second signal line in a plan view is formed; and a semiconductor layer which is disposed between the insulating layer and the second conductive layer and in which a first semiconductor film and a second semiconductor film are formed to be separated from each other. The wiring lengths of the first signal line and the second signal line are different by at least 10 times or more. The first semiconductor film overlaps, in a plan view, a region where the first signal line crosses the ground wire. The second semiconductor film overlaps, in a plan view, a region where the second signal line crosses the ground wire.

The present invention inspects a defect of a photo sensor element or a photo sensor line. A display device includes a substrate, a plurality of pixels formed on a display region of the substrate, and a plurality of video lines for applying a video voltage to the plurality of pixels. The substrate includes at least one photo sensor element which is formed on a region outside the display region, a photo sensor line which is connected with at least one photo sensor element, and at least one first switching element which connects at least one photo sensor element and at least one video line out of the plurality of video lines. At the time of inspecting the photo sensor element, the first switching element is turned on and, at the same time, a predetermined inspection voltage is applied to at least one photo sensor element via the photo sensor line thus applying a signal to the pixel via the first switching element and the video line, and in response to a turn-on state of the pixel at the time of applying the signal to the pixel, a defect of at least one of at least one photo sensor element and the photo sensor line can be detected.

Growing community of inventors

Ootaki, Japan

Hirokazu Itakura