公开(公告)号：US20190004354A1

公开(公告)日：2019-01-03

申请号：US15685691

申请日：2017-08-24

Applicant: FocalTech Electronics, Ltd

Inventor： Pei-Hung HSIAO

IPC: G02F1/1333 ,  G06K9/00 ,  H01L27/32 ,  G06F3/041

CPC classification number: G02F1/13338 ,  G06F3/0414 ,  G06F2203/04105 ,  G06K9/0004 ,  G06K9/00053 ,  G06K9/00087 ,  H01L27/3248

Abstract: A high screen ratio display device with fingerprint identification includes a lower substrate, an upper substrate, and a cover glass. The lower substrate has a thin film transistor array formed with a plurality of thin film transistors and corresponding capacitors to provide an active area. The upper substrate is disposed on one side of the TFT array, and has an optical film layer. The cover glass is disposed on one side of the upper substrate, and has an opening to accommodate a fingerprint identification module. The opening at least partially overlaps the active area, and a space is defined between the opening of the cover glass and the thin film transistor array to accommodate a portion of the fingerprint identification module.

公开(公告)号：US20180341365A1

公开(公告)日：2018-11-29

申请号：US16056486

申请日：2018-08-06

Applicant: FOCALTECH ELECTRONICS, LTD.

Inventor： Lianghua MO ,  Xinxi JIANG ,  Junqiao LIU

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

Abstract: A touch display apparatus, a corresponding driving circuit, and a driving method are provided. The touch display apparatus includes a driving circuit configured to, during the touch sensing stage, provide a first signal to a common electrode for realizing touch detection during the touch sensing stage, a second signal used to control a thin film transistor of the touch display apparatus to be switched off and is used to decrease charge and discharge capacity of a capacitor formed by the common electrode and the gate line, and a third signal used to decrease charge and discharge capacity of a capacitor formed by the common electrode and a data line. The third signal is used to control the data line to enter a floating state during the touch sensing stage.

公开(公告)号：US10073562B2

公开(公告)日：2018-09-11

申请号：US15108213

申请日：2014-02-14

Applicant: FOCALTECH ELECTRONICS, LTD.

Inventor： Lianghua Mo ,  Xinxi Jiang ,  Junqiao Liu

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

CPC classification number: G06F3/0418 ,  G02F1/13338 ,  G02F1/13439 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G09G3/3655 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2310/0248 ,  G09G2310/0281 ,  G09G2310/08

Abstract: A touch display apparatus, a corresponding driving circuit, and a driving method. The touch display apparatus includes a common electrode between a first substrate and a second substrate, and a driving circuit used as a touch sensing electrode during a touch sensing phase. The driving circuit is used for providing a first signal for touch detection to the common electrode. The driving circuit is also used for providing a second signal to a gate line during the touch sensing phase, said second signal enabling a thin-film transistor to be in off mode and decreasing the charge-discharge capacity of a capacitor formed by the common electrode and a gate line. The driving circuit is also used for providing a third signal during the touch sensing phase, the third signal decreasing the charge-discharge capacity of a capacitor formed by the common electrode and a data line.

公开(公告)号：US09983752B2

公开(公告)日：2018-05-29

申请号：US15277334

申请日：2016-09-27

Applicant: FocalTech Electronics, Ltd.

Inventor： Po-Sheng Shih ,  Chien-Yung Cheng ,  Cheng-Tai Huang

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412

Abstract: A pressure detection method for an in-cell touch display and a mobile device using the same are provided. The pressure detection method comprises the steps of: providing a common voltage plane corresponding to touch sensing electrodes in the in-cell touch display; detecting capacitance values of the touch sensing electrodes; setting a first area and a second area according to a center of a touched portion when the in-cell touch display is determined as being touched, wherein the second area includes the first area; and excluding the capacitance values of the touch sensing electrodes in the first area, and using the capacitance values of the touch sensing electrodes in the second area to serve as a pressure detection value to determine a pressure exerted on the in-cell touch display.

公开(公告)号：US20170269781A1

公开(公告)日：2017-09-21

申请号：US15237037

申请日：2016-08-15

Applicant: FOCALTECH ELECTRONICS, LTD.

Inventor： Ho-Nien YANG ,  Shen-Chia HUANG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: A driving method for an in-cell touch display and a mobile device using the same are provided. The driving method for an in-cell touch display comprises the steps of: dividing a frame period into N display/touch detection sub-periods each comprising a display sub-period and a touch detection sub-period; dividing scan lines into M scan-line sets, wherein a position of each of the scan-line sets corresponds to at least one of touch sensors; supplying a display common voltage to the touch sensor corresponding to the Ith scan-line set when the scan line being scanned in the display sub-period of the Kth display/touch detection sub-period comprises the scan line of the Ith scan-line set, wherein N, M, K and I are natural numbers, K is smaller than or equal to N, and I is smaller than or equal to M.

公开(公告)号：US20170177141A1

公开(公告)日：2017-06-22

申请号：US15277334

申请日：2016-09-27

Applicant: FocalTech Electronics, Ltd.

Inventor： Po-Sheng SHIH ,  CHIEN-YUNG CHENG ,  Cheng-Tai HUANG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412

Abstract: A pressure detection method for an in-cell touch display and a mobile device using the same are provided. The pressure detection method comprises the steps of: providing a common voltage plane corresponding to touch sensing electrodes in the in-cell touch display; detecting capacitance values of the touch sensing electrodes; setting a first area and a second area according to a center of a touched portion when the in-cell touch display is determined as being touched, wherein the second area includes the first area; and excluding the capacitance values of the touch sensing electrodes in the first area, and using the capacitance values of the touch sensing electrodes in the second area to serve as a pressure detection value to determine a pressure exerted on the in-cell touch display.

公开(公告)号：US20170131807A1

公开(公告)日：2017-05-11

申请号：US15016209

申请日：2016-02-04

Applicant: FocalTech Electronics, Ltd

Inventor： Yao-Hung Lai

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: A touch apparatus, a capacitive touch sensing circuit of the touch apparatus, and a touch sensing method are provided. The capacitive touch sensing circuit includes a switching capacitor integrating circuit, an encoding circuit, a feedback circuit, and a decoding circuit. The switching capacitor integrating circuit receives an input signal and integrates the input signal to generate an output signal. The encoding circuit receives and encodes the output signal to generate an encoded result. The feedback circuit provides a charge dissipation path for discharging charges from the switching capacitor integrating circuit, and the feedback circuit receives the encoded result and adjusts a charge dissipation ability provided by the charge dissipation path according to the encoded result. The decoding circuit receives and decodes the output signal to generate a touch detecting result.

公开(公告)号：US20170031476A1

公开(公告)日：2017-02-02

申请号：US14987996

申请日：2016-01-05

Applicant: FocalTech Electronics, Ltd.

Inventor： Chen-Pang Kung

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F2203/04105

Abstract: A display module includes a front panel, a backlight panel, a pressure sensor and a panel frame. The front panel includes an array of display pixels. The backlight panel is disposed under the front panel. The pressure sensor is disposed under the backlight panel, and includes a top electrode layer, an interlayer and a bottom electrode layer. The bottom electrode layer includes plural sub-electrodes. If a first distance between a first sub-electrode and a geometric center of the bottom electrode layer is shorter than a second distance between a second sub-electrode and the geometric center, an area of the second sub-electrode is larger than an area of the first sub-electrode. The panel frame is disposed under the pressure sensor. When an applied pressure is received by the front panel, a magnitude of the applied pressure is sensed by the pressure sensor.

Abstract translation: 显示模块包括前面板，背光面板，压力传感器和面板框架。 前面板包括一组显示像素。 背光面板设置在前面板下方。 压力传感器设置在背光面板下方，并且包括顶部电极层，中间层和底部电极层。 底部电极层包括多个子电极。 如果第一子电极和底电极层的几何中心之间的第一距离比第二子电极和几何中心之间的第二距离短，则第二子电极的面积大于 第一子电极。 面板框架设置在压力传感器下方。 当前面板接收到施加的压力时，由压力传感器检测所施加的压力的大小。

公开(公告)号：US11262869B2

公开(公告)日：2022-03-01

申请号：US17090084

申请日：2020-11-05

Applicant: FOCALTECH ELECTRONICS, LTD.

Inventor： Yunn-Hwa Wang

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display control circuit, a control method, and an electronic device are provided. The touch display control circuit is configured to drive STN-LCD screens, TN-LCD screens and CSTN-LCD screens. The touch display control circuit includes a display driving circuit and a touch detection circuit. The display driving circuit includes a signal transmission line, multiple groups of signal selection circuits and a reference voltage generation circuit. The signal transmission line is configured to transmit a gate signal and a common signal. The signal selection circuit is configured to select a preset control voltage based on display control timing or touch control timing. The reference voltage generation circuit is configured to provide the preset control voltage. The touch detection circuit is connected to the signal selection circuit and is configured to perform touch detection based on the touch control timing.

公开(公告)号：US10566973B2

公开(公告)日：2020-02-18

申请号：US15661619

申请日：2017-07-27

Applicant: FOCALTECH ELECTRONICS, LTD.

Inventor： Yunn-Hwa Wang ,  Kuet Liong Fam

IPC: G01R19/10 ,  H03K19/00 ,  G06K9/00 ,  H03K19/0948 ,  G01R19/165

Abstract: Sending, receiving and transmitting apparatuses of a dual-power system and a fingerprint recognition system are provided. The dual-power system includes a first power system for providing a first high voltage signal and a first low voltage signal and a second power system for providing a second high voltage signal and a second low voltage signal, and a voltage difference between the first high voltage signal and the first low voltage signal is equal to that between the second high voltage signal and the second low voltage signal. The sending apparatus includes a first detection circuit for outputting a detection signal indicating whether voltages of the first and second low voltage signals are equal; and a first transmission circuit for transmitting an output signal of the dual-power system or provide a first voltage to an output terminal of the sending apparatus, based on the detection signal.