公开(公告)号：US10444928B2

公开(公告)日：2019-10-15

申请号：US15803936

申请日：2017-11-06

Applicant: Japan Display Inc.

Inventor： Hiroshi Tanaka ,  Masahiro Teramoto

IPC: G06F3/044 ,  G06F3/041

Abstract: In a capacitive touch panel, edge regions of the panel display generally have poor accuracy of coordinate detection of a touch point as compared to the intermediate region of the panel display. A display device includes a plurality of first electrodes arranged at predetermined pitches and extending in a X-direction; and a plurality of second electrodes arranged at predetermined pitches and extending in a Y-direction, wherein both endmost first electrodes of the plurality of first electrodes have a smaller pitch than the other first electrodes, both endmost second electrodes of the plurality of second electrodes have a smaller pitch than the other second electrodes, and the display device is configured to detect a touch based on a capacitance variation at one or more of intersections of the plurality of first electrodes with the plurality of second electrodes.

公开(公告)号：US09373295B2

公开(公告)日：2016-06-21

申请号：US14314304

申请日：2014-06-25

Applicant: Japan Display Inc.

Inventor： Ryota Kobayashi ,  Tsutomu Furuhashi ,  Hiroshi Tanaka

IPC: G06F3/044 ,  G09G3/36 ,  G06F3/041 ,  G02F1/1333

CPC classification number: G09G3/3648 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/0418

Abstract: A liquid crystal display device with a touch panel includes: pixel electrodes as a plurality of electrodes to each of which a potential corresponding to a gray-scale value is applied; common electrodes as a plurality of electrodes that extend in one direction; detection electrodes as a plurality of electrodes that extend in a direction different from the one direction and detect a contact position on the panel; a liquid crystal layer that is formed of a liquid crystal composition; and a drive pulse output unit that sequentially applies a potential for detecting a touch to drive electrodes as a plurality of electrodes of a portion of the common electrodes, wherein the drive pulse output unit can output a drive pulse to the drive electrode at plural different timings within one horizontal synchronizing period for display.

Abstract translation: 具有触摸屏的液晶显示装置包括：作为多个电极的像素电极，其中施加与灰度值相对应的电位; 公共电极作为在一个方向上延伸的多个电极; 检测电极作为沿与所述一个方向不同的方向延伸的多个电极，并且检测所述面板上的接触位置; 由液晶组合物形成的液晶层; 以及驱动脉冲输出单元，其顺序地施加用于检测对作为所述公共电极的一部分的多个电极的驱动电极的触摸的电位，其中所述驱动脉冲输出单元可以以多个不同的定时向所述驱动电极输出驱动脉冲 在一个水平同步周期内进行显示。

公开(公告)号：US09552111B2

公开(公告)日：2017-01-24

申请号：US14172935

申请日：2014-02-05

Applicant: Japan Display Inc.

Inventor： Hiroshi Tanaka

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: In a touch sensing device of a capacitive type, touch coordinates are obtained according to a detected signal corresponding to a variation in a mutual capacitance between an X-electrode and a Y-electrode due to a finger touch in each combination of a plurality of X-electrodes and a plurality of Y-electrodes within a sensing area. The theoretical value of the detected signal in each combination of the X-electrodes an the Y-electrodes approximately expressed by a two-dimensional Gaussian function. The touch coordinates are identified correctly by finding the optimal solution of the object function which expresses the sum of squared differences between each of the theoretical signal value and the detected signal value.

Abstract translation: 在电容型触摸感测装置中，根据与X电极和Y电极之间的互电容变化相对应的检测信号，可以获得触摸坐标，这是由于多个X的每个组合中的手指触摸 电极和感测区域内的多个Y电极。 在X电极的每个组合中的检测信号的理论值和近似由二维高斯函数表示的Y电极。 通过找到表示理论信号值和检测信号值的每一个之间的平方差之和的目标函数的最优解来正确地识别触摸坐标。

公开(公告)号：US11307694B2

公开(公告)日：2022-04-19

申请号：US17010899

申请日：2020-09-03

Applicant: Japan Display Inc.

Inventor： Kazune Matsumura ,  Hiroyuki Abe ,  Hiroshi Tanaka

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1343 ,  G02F1/136

Abstract: According to one embodiment, a display device includes a display portion including a first electrode, a second electrode, first pixel electrodes overlapping the first electrode, and second pixel electrodes overlapping the second electrode, first wiring lines connected to the first electrode, second wiring lines connected to the second electrode, and a control unit electrically connected to the first wiring lines and the second wiring lines. The display portion has a first end portion farthest from the control unit and a second end portion nearest to the control unit. The first electrode is adjacent to the first end portion. The second electrode is adjacent to the second end portion. The number of first wiring lines is a same as the number of second wiring lines.

公开(公告)号：US09841851B2

公开(公告)日：2017-12-12

申请号：US14325681

申请日：2014-07-08

Applicant: Japan Display Inc.

Inventor： Hiroshi Tanaka ,  Masahiro Teramoto

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0418

Abstract: In a capacitive touch panel, edge regions of the panel display generally have poor accuracy of coordinate detection of a touch point as compared to the intermediate region of the panel display. A display device includes a plurality of first electrodes arranged at predetermined pitches and extending in a X-direction; and a plurality of second electrodes arranged at predetermined pitches and extending in a Y-direction, wherein both endmost first electrodes of the plurality of first electrodes have a smaller pitch than the other first electrodes, both endmost second electrodes of the plurality of second electrodes have a smaller pitch than the other second electrodes, and the display device is configured to detect a touch based on a capacitance variation at one or more of intersections of the plurality of first electrodes with the plurality of second electrodes.