公开(公告)号：US10551962B2

公开(公告)日：2020-02-04

申请号：US16163819

申请日：2018-10-18

Applicant: Japan Display Inc.

Inventor： Koji Noguchi

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G02F1/1368

Abstract: According to an aspect, a touch detection device includes: a first substrate; a second substrate opposed to the first substrate; a cover base material opposed to the second substrate; a plurality of first electrodes overlapping a display region on a plane parallel with the first substrate; and a second electrode arranged at the cover base material and overlapping a frame region outside the display region. Proximity or contact of an object with respect to the frame region is detected based on capacitance between the first electrodes and the second electrode. The second electrode extends along a side of the frame region.

公开(公告)号：US10534465B2

公开(公告)日：2020-01-14

申请号：US16251190

申请日：2019-01-18

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Koji Noguchi ,  Daisuke Ito ,  Yasuyuki Teranishi

IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044 ,  G09G3/36

Abstract: A performance of a display device having an input device is improved. A display device includes: an electro-optical layer; a first driving electrode and a second driving electrode which drives the electro-optical layer; a driver chip which outputs a video signal; a switch circuit which is arranged outside the driver chip, which selects a potential to be supplied to the second driving electrode, and which includes a first switch element and a second switch element; a shift register circuit connected to the switch circuit; and a detection circuit which detects that an object is close or in contact. Each of the first switch element and the second switch element is selectively turned ON or OFF by the shift register circuit. The detection circuit is electrically connected to the first switch element and the second switch element.

公开(公告)号：US20190391695A1

公开(公告)日：2019-12-26

申请号：US16563405

申请日：2019-09-06

Applicant: Japan Display Inc.

Inventor： Koji Noguchi ,  Yoshitoshi Kida ,  Kohei Azumi

IPC: G06F3/041 ,  G06F3/047 ,  G09G5/00 ,  G09G5/18 ,  G09G3/36 ,  G06F3/044

Abstract: A display device is provided and includes scanning signal lines including a first scanning signal line; pixel signal lines including a first pixel signal line; switch elements including a first switch being electrically coupled to the first scanning signal line and the pixel signal line; pixel electrodes including a first pixel electrode being electrically coupled to the first switch element; drive electrodes including a first drive electrode opposed to the first pixel electrode; a driver configured to drive the scanning signal lines, the pixel signal lines, and the drive electrodes; and a controller configured to control the driver in a frame.

公开(公告)号：US20190220138A1

公开(公告)日：2019-07-18

申请号：US16363199

申请日：2019-03-25

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Hiroshi Mizuhashi ,  Koji Noguchi ,  Takafumi Suzuki

IPC: G06F3/041 ,  G09G3/36 ,  G02F1/137 ,  G02F1/1368 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1339 ,  G02F1/1343

Abstract: According to one embodiment, a display device includes a plurality of gate lines, a plurality of data lines intersecting with the gate lines, a plurality of pixel electrodes provided in areas defined by the gate lines and the data lines, and a sensor drive controller which includes a plurality of common electrodes facing the pixel electrodes and detects a touch by using the common electrodes. The sensor drive controller selects at least one of the common electrodes as a sensor electrode, detects a touch by using the sensor electrode, and inputs, to the other common electrodes, a guard signal for reducing generation of capacitance between the other common electrodes and the sensor electrode.

公开(公告)号：US10275085B2

公开(公告)日：2019-04-30

申请号：US16011012

申请日：2018-06-18

Applicant: Japan Display Inc.

Inventor： Takayuki Nakanishi ,  Koji Noguchi ,  Koji Ishizaki ,  Yasuyuki Teranishi ,  Takeya Takeuchi

IPC: G06F3/044 ,  G09G5/18 ,  G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1335 ,  G02F1/1368

Abstract: An information input device including a touch panel configured to be provided with a touch sensor that detects a position at which a sensing object is brought close to a sensing surface. In this information input device, the touch sensor has a scanning electrode and a detecting electrode that is opposed to the scanning electrode with the intermediary of a dielectric substance, and is a capacitive sensor whose electrostatic capacitance changes if the sensing object is brought close to the detecting electrode. Furthermore, a slit is formed in a surface of the detecting electrode opposed to the scanning electrode.

公开(公告)号：US20190064971A1

公开(公告)日：2019-02-28

申请号：US16174475

申请日：2018-10-30

Applicant: Japan Display Inc.

Inventor： Koji Ishizaki ,  Koji Noguchi ,  Osamu Ishige

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412

Abstract: A display device with a touch detection function including: a plurality of elements performing display operation; a plurality of touch detection electrodes arranged side by side to extend in one direction, and each outputting a detection signal based on a change in an electrostatic capacitance caused by an external proximity object; a conductive film insulated from or connected with high resistance to the touch detection electrodes, and disposed to cover the touch detection electrodes; and a touch detection circuit detecting the external proximity object by sampling the detection signal. The conductive film has a sheet resistance equal to or smaller than a predetermined resistance value, and has a time constant larger than a predetermined minimum time constant defined by sampling timings in the touch detection circuit.

公开(公告)号：US10203829B2

公开(公告)日：2019-02-12

申请号：US15959742

申请日：2018-04-23

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Yoshitoshi Kida ,  Koji Noguchi

IPC: G06F3/044 ,  G06F3/041

Abstract: There are provide a display panel with a touch detection function, in which display operation is less affected by touch detection operation, a method of driving the display panel with a touch detection function, a driving circuit, and an electronic unit having the display panel with a touch detection function. The display panel with a touch detection function includes: one or more display elements; one or more drive electrodes; one or more touch detection electrodes; and a drive section selectively applying a DC drive signal or an AC drive signal to the drive electrodes.

公开(公告)号：US10162470B2

公开(公告)日：2018-12-25

申请号：US15435011

申请日：2017-02-16

Applicant: Japan Display Inc.

Inventor： Koji Ishizaki ,  Koji Noguchi ,  Takayuki Nakanishi ,  Yasuyuki Matsui ,  Masanobu Ikeda

IPC: G06F3/047 ,  G09G5/00 ,  G09G5/02 ,  G02F1/1333 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1345

Abstract: A display unit with a touch detection function includes: a plurality of touch detection electrodes arranged side by side to extend in a direction, each of the touch detection electrodes being formed in a predetermined electrode pattern including electrode portion and opening portion and outputting a detection signal, based on a variation in capacitance due to an external proximity object; and a plurality of display elements formed in a layer different from a layer of the touch detection electrodes, a predetermined number of the display elements being arranged within a width dimension of a region corresponding to each of the touch detection electrodes. The predetermined electrode pattern corresponds to a layout pattern of the display elements.

公开(公告)号：US10162463B2

公开(公告)日：2018-12-25

申请号：US15883432

申请日：2018-01-30

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Koji Noguchi ,  Toshiaki Fukushima

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333

Abstract: To provide a liquid crystal display device with a touch detection function in which any drive method can be adopted. The liquid crystal display device is provided with: a liquid crystal element arrangement that has a plurality of liquid crystal display elements arranged in a matrix shape; a plurality of scanning lines that are arranged in each row of the liquid crystal element arrangement, and supply scanning signals to a plurality of liquid crystal display elements arranged in a corresponding row; a plurality of signal lines that are arranged in each column of the liquid crystal element arrangement, and supply an image signal to a plurality of liquid crystal display elements arranged in a corresponding column; a plurality of touch detection drive electrodes which are arranged in a column of the liquid crystal element arrangement, and to which a drive signal for detecting a touch is supplied; and a touch control part that specifies a touch detection drive electrode from the a plurality of touch detection drive electrodes. Here, the drive signal is supplied to the touch detection drive electrode specified by the touch control part.

公开(公告)号：US10147382B2

公开(公告)日：2018-12-04

申请号：US14699029

申请日：2015-04-29

Applicant: Japan Display Inc.

Inventor： Takayuki Nakanishi ,  Koji Noguchi ,  Koji Ishizaki ,  Yasuyuki Teranishi ,  Takeya Takeuchi

IPC: G09G3/36 ,  G06F3/044 ,  G06F3/041

Abstract: A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise, are provided. The touch panel includes: a plurality of detection scan electrodes extending in a first direction; and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. A ratio of fringe capacitance to total capacitance between one or more selected detection scan electrodes and a first detection electrode is different from a ratio of fringe capacitance to total capacitance between the one or more selected detection scan electrodes and a second detection electrode. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.