公开(公告)号：US09436314B2

公开(公告)日：2016-09-06

申请号：US15070404

申请日：2016-03-15

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Toshiaki Atsuta

IPC: G06F3/0488 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044

Abstract: A display device is configured in a display state to allow the common electrode to function as an electrode for display and a scanning electrode for a touch panel, to which a common voltage and a first scanning pulse voltage are supplied, and to allow a detection circuit to detect a touched position based on the voltage detected by the first and the second detection electrodes. In a display stop state, the first detection electrode is configured to function as a temporary scanning electrode, and the detection circuit is configured to supply a second scanning pulse voltage to the first detection electrode so as to detect existence of a swipe based on the voltage detected by the second detection electrode.

Abstract translation: 显示装置被配置为显示状态以允许公共电极用作用于显示的电极和用于触摸面板的扫描电极，向其提供公共电压和第一扫描脉冲电压，并且允许检测电路 基于由第一和第二检测电极检测的电压来检测触摸位置。 在显示停止状态下，第一检测电极被配置为用作临时扫描电极，并且检测电路被配置为向第一检测电极提供第二扫描脉冲电压，以便基于电压检测擦拭的存在 由第二检测电极检测。

公开(公告)号：US09652078B2

公开(公告)日：2017-05-16

申请号：US14663662

申请日：2015-03-20

Applicant: Japan Display Inc.

Inventor： Seiichi Tsuyuzaki ,  Masahiro Tokita

IPC: G06F3/041 ,  G06F3/044

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

Abstract: A display device is configured to (a) detect presence or absence of noise or water droplet adhesion based on current flowing through a plurality of detection electrodes upon supply of a touch panel scanning voltage to m divided blocks of the counter electrode, and (b) distinguish between noise and water droplet based on the current flowing through the detection electrodes on the assumption that a (m+1)th counter electrodes exists in addition to the m divided blocks of the counter electrode, and the touch panel scanning voltage is supplied to the (m+1)th counter electrode, which is in synchronization with the touch panel scanning voltage supplied to the m divided blocks of the counter electrode.

公开(公告)号：US10444906B2

公开(公告)日：2019-10-15

申请号：US16381087

申请日：2019-04-11

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Seiichi Tsuyuzaki

IPC: G06F3/041 ,  G02F1/1368 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/1343

Abstract: An in-cell type liquid crystal display device includes a first unit that detects whether a touch is present, or not, on the basis of a current flowing in a plurality of detection electrodes when a touch panel scanning voltage is applied to counter electrodes of each of M (M≥2) divided blocks, and a second unit that detects noise on the basis of a current flowing in the plurality of detection electrodes, assuming that an (M+1)th counter electrode is present for the counter electrodes of each of the M divided blocks, and assuming that a touch panel scanning voltage synchronous with the touch panel scanning voltage applied to the counter electrodes of each of the M divided blocks is applied to the (M+1)th counter electrode.

公开(公告)号：US09740329B2

公开(公告)日：2017-08-22

申请号：US15229784

申请日：2016-08-05

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Toshiaki Atsuta

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044

Abstract: A display device is configured in a display state to allow the common electrode to function as an electrode for display and a scanning electrode for a touch panel, to which a common voltage and a first scanning pulse voltage are supplied, and to allow a detection circuit to detect a touched position based on the voltage detected by the first and the second detection electrodes. In a display stop state, the first detection electrode is configured to function as a temporary scanning electrode, and the detection circuit is configured to supply a second scanning pulse voltage to the first detection electrode so as to detect existence of a swipe based on the voltage detected by the second detection electrode.

公开(公告)号：US10139960B2

公开(公告)日：2018-11-27

申请号：US15172293

申请日：2016-06-03

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Seiichi Tsuyuzaki

IPC: G06F3/041 ,  G02F1/1368 ,  G02F1/1343 ,  G06F3/044 ,  G02F1/1333

Abstract: An in-cell type liquid crystal display device includes a first unit that detects whether a touch is present, or not, on the basis of a current flowing in a plurality of detection electrodes when a touch panel scanning voltage is applied to counter electrodes of each of M (M≥2) divided blocks, and a second unit that detects noise on the basis of a current flowing in the plurality of detection electrodes, assuming that an (M+1)th counter electrode is present for the counter electrodes of each of the M divided blocks, and assuming that a touch panel scanning voltage synchronous with the touch panel scanning voltage applied to the counter electrodes of each of the M divided blocks is applied to the (M+1)th counter electrode.

公开(公告)号：US09535278B2

公开(公告)日：2017-01-03

申请号：US14094991

申请日：2013-12-03

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Masashi Takahata

IPC: G06F3/045 ,  G02F1/1333 ,  G02F1/13 ,  G06F3/041 ,  G09G3/36 ,  G02F1/1343 ,  G02F1/1362

CPC classification number: G02F1/13338 ,  G02F1/1309 ,  G02F1/133528 ,  G02F1/134309 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/133302 ,  G02F2001/134318 ,  G02F2001/136254 ,  G02F2202/28 ,  G06F3/0412 ,  G06F3/0414 ,  G06F3/0418 ,  G06F3/044 ,  G06F2203/04102 ,  G09G3/3655 ,  G09G2354/00

Abstract: A liquid crystal display device with a plurality of pixels arranged in a matrix includes a first substrate, a second substrate, a liquid crystal interposed between the first and the second substrates, and a detection circuit. The second substrate includes a detection electrode for a touch panel. The respective pixels have pixel electrodes and counter electrodes. The counter electrode divided into a plurality of blocks is provided common to the respective pixels on a plurality of consecutive display lines. The counter electrode divided into blocks serves as the scanning electrode for the touch panel. The detection circuit includes a calibration capacity element provided for each of the detection electrodes, having one end connected to the detection electrode, and supplies a calibration voltage to the other end of the calibration capacity element in a touched position detection process.

Abstract translation: 具有排列成矩阵状的多个像素的液晶显示装置包括第一基板，第二基板，插入在第一基板和第二基板之间的液晶，以及检测电路。 第二基板包括用于触摸面板的检测电极。 各像素具有像素电极和对电极。 被分成多个块的对置电极对多个连续显示行上的各个像素共同设置。 分为块的对置电极用作触摸面板的扫描电极。 检测电路包括为每个检测电极提供的校准电容元件，其一端连接到检测电极，并且在触摸位置检测处理中将校准电压提供给校准电容元件的另一端。

公开(公告)号：US09111508B2

公开(公告)日：2015-08-18

申请号：US13758388

申请日：2013-02-04

Applicant: Japan Display Inc.

Inventor： Tomohide Oohira ,  Masahiro Tokita ,  Yasuhiko Yamagishi

IPC: G09G3/28 ,  G09G3/36

CPC classification number: G09G3/3685 ,  G09G2310/08 ,  G09G2320/0233

Abstract: Each of a plurality of timing controllers has a synchronization reference signal output terminal from which a synchronization reference signal is output and a synchronization reference signal input terminal to which the synchronization reference signal is input. A master timing controller outputs a predetermined signal of display signals which are input from an external device, from the synchronization reference signal output terminal of the master timing controller as the synchronization reference signal, and the synchronization reference signal is input to the synchronization reference signal input terminals of the master timing controller and a slave timing controller. Accordingly, a luminance difference can be prevented from occurring between divided regions of a display panel due to asynchronization between display signals input to respective timing controllers in a display device in which a plurality of timing controllers are used and the display panel is divided into a plurality of regions.

Abstract translation: 多个定时控制器中的每一个具有从其输出同步参考信号的同步参考信号输出端子和输入同步参考信号的同步参考信号输入端子。 主时序控制器从主时序控制器的同步参考信号输出端输出从外部设备输入的显示信号的预定信号作为同步参考信号，同步参考信号被输入到同步参考信号输入 主时序控制器的端子和从时钟控制器。 因此，由于在使用多个定时控制器的显示装置中由于输入到各个定时控制器的显示信号之间的异步而使显示面板的分割区域之间发生亮度差异，并且显示面板被分成多个 的地区。

公开(公告)号：US10303304B2

公开(公告)日：2019-05-28

申请号：US16166304

申请日：2018-10-22

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Seiichi Tsuyuzaki

IPC: G06F3/045 ,  G09G3/36 ,  G06F3/041 ,  G02F1/1368 ,  G02F1/1343 ,  G02F1/1333 ,  G06F3/044

Abstract: An in-cell type liquid crystal display device includes a first unit that detects whether a touch is present, or not, on the basis of a current flowing in a plurality of detection electrodes when a touch panel scanning voltage is applied to counter electrodes of each of M (M≥2) divided blocks, and a second unit that detects noise on the basis of a current flowing in the plurality of detection electrodes, assuming that an (M+1)th counter electrode is present for the counter electrodes of each of the M divided blocks, and assuming that a touch panel scanning voltage synchronous with the touch panel scanning voltage applied to the counter electrodes of each of the M divided blocks is applied to the (M+1)th counter electrode.

公开(公告)号：US10180590B2

公开(公告)日：2019-01-15

申请号：US15178846

申请日：2016-06-10

Applicant: Japan Display Inc.

Inventor： Masahiro Tokita ,  Masashi Takahata

IPC: G06F3/045 ,  G02F1/1333 ,  G06F3/041 ,  G02F1/13 ,  G09G3/36 ,  G02F1/1335 ,  G02F1/1368 ,  G06F3/044 ,  G02F1/1362 ,  G02F1/1343

Abstract: A liquid crystal display device with a plurality of pixels arranged in a matrix includes a first substrate, a second substrate, a liquid crystal interposed between the first and the second substrates, and a detection circuit. The second substrate includes a detection electrode for a touch panel. The respective pixels have pixel electrodes and counter electrodes. The counter electrode divided into a plurality of blocks is provided common to the respective pixels on a plurality of consecutive display lines. The counter electrode divided into blocks serves as the scanning electrode for the touch panel. The detection circuit includes a calibration capacity element provided for each of the detection electrodes, is having one end connected to the detection electrode, and supplies a calibration voltage to the other end of the calibration capacity element in a touched position detection process.

公开(公告)号：US10146365B2

公开(公告)日：2018-12-04

申请号：US15297875

申请日：2016-10-19

Applicant: Japan Display Inc.

Inventor： Keiichiro Takahashi ,  Masahiro Tokita

IPC: G06F3/00 ,  G06F3/041 ,  G06F3/044

Abstract: According to an aspect, a display device with a touch detection function performs image display and touch detection in a time division manner in one frame period. The display device includes: a plurality of pixel electrodes arranged in a matrix in a display region in which an image is displayed; a display function layer having an image display function for displaying an image in the display region; a plurality of touch detection electrodes opposed to the pixel electrodes; and a detection unit that performs noise detection. The one frame period includes a plurality of display operation periods for displaying the image and a plurality of detection operation periods for performing at least touch detection. The detection unit performs the noise detection in a period that is included in the detection operation period and shorter than one of the detection operation periods in the one frame period.