公开(公告)号：US11887555B2

公开(公告)日：2024-01-30

申请号：US17837097

申请日：2022-06-10

Applicant: Japan Display Inc.

Inventor： Takayuki Suzuki ,  Hiroyuki Abe

IPC: G09G3/36 ,  G02F1/1345 ,  G11C19/28 ,  G02F1/1368 ,  G02F1/1362

CPC classification number: G09G3/3677 ,  G02F1/1345 ,  G02F1/1368 ,  G11C19/28 ,  G11C19/287 ,  G02F1/136286 ,  G02F1/136295 ,  G02F2201/56 ,  G09G2300/0426 ,  G09G2310/0286 ,  G09G2310/08

Abstract: A display device with a variant-shape display region other than the rectangular display region is configured to form a scanning line drive circuit along the variant-shape display region. The scanning line drive circuit includes bus wiring group with clock wiring for supplying clocks with three or more phases and the power supply wiring for supplying power, and the unit circuits for configuring the shift register including five or more transistors. The bus wiring and the unit circuits are formed on the different regions so as not to cross with one another.

公开(公告)号：US10969641B2

公开(公告)日：2021-04-06

申请号：US16782223

申请日：2020-02-05

Applicant: Japan Display Inc.

Inventor： Takayuki Suzuki ,  Hiroyuki Abe

IPC: G02F1/1362 ,  G02F1/1345 ,  G09G3/36 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1368 ,  H01L27/12 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

Abstract: A liquid crystal display device having an outer shape of a display region formed other than a rectangle. A driver for supplying a video signal is disposed outside the display region. A selector with selector TFT is disposed between the display region and the driver. A video signal line is disposed between the driver and the selector, and a drain line is disposed between the selector and the display region. A scanning circuit for supplying a scanning signal to the scanning line is disposed outside the display region. The selector is disposed between the scanning line and the display region, and covered with ITO as the common electrode. The common bus wiring is disposed outside the selector.

公开(公告)号：US10453417B2

公开(公告)日：2019-10-22

申请号：US16257267

申请日：2019-01-25

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Takayuki Suzuki

IPC: G09G3/36 ,  G11C19/28

Abstract: The plurality of stages of circuit blocks of a driver circuit in a display device include a first transistor and a second transistor. The first transistor is connected at its gate with a first node and controls conductivity between a scanning signal line and a first clock signal line applied with a first clock signal. The first node is at an active potential when at least any one signal of signals output from one stage in each of a forward direction and a reverse direction is at the active potential. The second transistor is connected at its gate with the first node and controls conductivity between the first clock signal line and an input signal line of another stage of circuit block.

公开(公告)号：US10289228B2

公开(公告)日：2019-05-14

申请号：US15897479

申请日：2018-02-15

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Takayuki Suzuki

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device comprises counter electrodes configured to be used as common electrodes for displaying and scan electrodes for touch sensing, a first scan circuit which scans gate lines, and a second scan circuit which scans the counter electrodes. In the display device, one frame period includes a write period for continuously scanning one screen and a touch sensing period existing between the write period and a write period in the next frame. The second scan circuit includes a shift register unit and a switch unit. The switch unit includes a seventh thin-film transistor which outputs a DC drive signal to an output node and an eighth thin-film transistor which outputs an AC drive signal to the output node. A second control signal for fixing the voltage of a third retention node to which the gate electrode of the seventh thin-film transistor is connected is inputted in the write period.

公开(公告)号：US10114260B2

公开(公告)日：2018-10-30

申请号：US15284639

申请日：2016-10-04

Applicant: Japan Display Inc.

Inventor： Takayuki Suzuki ,  Hiroyuki Abe

IPC: G02F1/1362 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1368 ,  H01L27/12 ,  G02F1/1345 ,  G09G3/36 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

Abstract: A liquid crystal display device having an outer shape of a display region formed other than a rectangle. A driver for supplying a video signal is disposed outside the display region. A selector with selector TFT is disposed between the display region and the driver. A video signal line is disposed between the driver and the selector, and a drain line is disposed between the selector and the display region. A scanning circuit for supplying a scanning signal to the scanning line is disposed outside the display region. The selector is disposed between the scanning line and the display region, and covered with ITO as the common electrode. The common bus wiring is disposed outside the selector.

公开(公告)号：US10073556B2

公开(公告)日：2018-09-11

申请号：US15252813

申请日：2016-08-31

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Hideo Sato ,  Takayuki Suzuki

IPC: G06F3/041 ,  G02F1/1337 ,  G02F1/1362 ,  G02F1/1368 ,  G06F3/044 ,  G02F1/1343 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1345

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/1337 ,  G02F1/134309 ,  G02F1/13454 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133302 ,  G02F2201/121 ,  G02F2201/123 ,  G06F3/0412 ,  G06F3/044

Abstract: A liquid crystal display device with a touch panel includes: display drive circuits that are disposed respectively at the outsides of the sides opposing to a display region, and that apply sequential scanning signal potentials to scanning signal lines; touch panel drive circuits that are disposed respectively further to the outsides of the display drive circuits, and that apply sequential drive pulses to a plurality or drive electrodes among common electrodes; and switching circuits that are disposed respectively at insides of the display drive circuits, and that switch between applying common electric potentials for controlling the alignment of the liquid crystal composition and applying a touch drive pulse that detects the touching to the display surface.

公开(公告)号：US20190294285A1

公开(公告)日：2019-09-26

申请号：US16437036

申请日：2019-06-11

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Masahiro Maki ,  Takayuki Suzuki

IPC: G06F3/041 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1345 ,  G02F1/1333 ,  G02F1/1343

Abstract: The presence or absence of touch is detected according to a difference of a capacitance caused by the presence or absence of a material that blocks the electric field formed between the detection electrode and the common electrode. The common electrode includes a plurality of divided electrode portions that is extended in a lateral direction and aligned with each other in a longitudinal direction. Each of the plurality of common lines is electrically connected to at least one of the divided electrode portions. The plurality of common lines is arranged in an area next to the common electrode in the lateral direction of the common electrode, arranged next to each other in a width direction orthogonal to a length thereof, is different in width from each other, and the width of the common lines is wider as the length is longer.

公开(公告)号：US10359875B2

公开(公告)日：2019-07-23

申请号：US15896502

申请日：2018-02-14

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Masahiro Maki ,  Takayuki Suzuki

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1345 ,  G06F3/044 ,  G02F1/1343 ,  G02F1/1362

Abstract: The presence or absence of touch is detected according to a difference of a capacitance caused by the presence or absence of a material that blocks the electric field formed between the detection electrode and the common electrode. The common electrode includes a plurality of divided electrode portions that is extended in a lateral direction and aligned with each other in a longitudinal direction. Each of the plurality of common lines is electrically connected to at least one of the divided electrode portions. The plurality of common lines is arranged in an area next to the common electrode in the lateral direction of the common electrode, arranged next to each other in a width direction orthogonal to a length thereof, is different in width from each other, and the width of the common lines is wider as the length is longer.

公开(公告)号：US10248238B2

公开(公告)日：2019-04-02

申请号：US15420738

申请日：2017-01-31

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Takayuki Suzuki

IPC: G06F3/041

Abstract: To enable size reduction of a display device having a touch sensor function in which a display area has a non-rectangular shape. In a display area, video lines and common electrodes extend in the first direction, and scan lines extend in the second direction. A video signal transmission circuit and a common driver are arranged along a first edge of the display area, with which the one ends of the video lines are aligned. A scan line driver is arranged along a second edge of the display area, with which the ends of the scan lines and the common electrodes are aligned. The display area has a shape including an overlapping part between the first edge and the second edge. In a frame area adjacent to the overlapping part, the scan line driver is arranged more outward than the video signal transmission circuit and switch circuits.

公开(公告)号：US10192895B2

公开(公告)日：2019-01-29

申请号：US15805516

申请日：2017-11-07

Applicant: Japan Display Inc.

Inventor： Hiroyuki Abe ,  Takayuki Suzuki

IPC: H01L27/12 ,  G02F1/1362 ,  H01L29/786 ,  G02F1/1368

Abstract: Even when a light shielding film is provided between a transistor and a substrate, a threshold voltage of the transistor can be prevented or suppressed from being shifted. A display device includes light shielding films provided between a substrate and a semiconductor layer of a transistor including a gate electrode and the semiconductor layer. The semiconductor layer includes a source region and a drain region. Both of the light shielding films overlap the semiconductor layer when seen in a plan view, and are spaced apart from each other in a direction.