公开(公告)号：US07940252B2

公开(公告)日：2011-05-10

申请号：US11874897

申请日：2007-10-18

Applicant: Kai-Lan Chuang ,  Ying-Lieh Chen

Inventor： Kai-Lan Chuang ,  Ying-Lieh Chen

IPC: G06F3/042 ,  G06F3/038

CPC classification number: G06F3/0412 ,  G02F2001/13312 ,  G06F3/042

Abstract: An optical sensor is disclosed. Each sensor pixel circuit of the optical sensor includes a first readout TFT for reading out voltage of a charge node, a second readout TFT for controllably resetting the charge node to a first reset voltage, and a photo TFT for discharging the voltage at the charge node to a second reset voltage in absence of an object(s).

Abstract translation: 公开了一种光学传感器。 光传感器的每个传感器像素电路包括用于读出电荷节点的电压的第一读出TFT，用于将电荷节点可控地复位到第一复位电压的第二读出TFT，以及用于对充电节点放电的光电TFT 到不存在对象的第二复位电压。

公开(公告)号：US20070247411A1

公开(公告)日：2007-10-25

申请号：US11380009

申请日：2006-04-25

Applicant: Kai-Lan Chuang ,  Chuan-Che Lee ,  Wen-Teng Fan

Inventor： Kai-Lan Chuang ,  Chuan-Che Lee ,  Wen-Teng Fan

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/2092

Abstract: A source driver of an LCD includes a first and second power sources, a first and second inversion units, a first and second charging switches, and a first and second discharging switches. The first charging switch is coupled to the first power source, a first end of the first inversion unit, and a second end of the second inversion unit. The second charging switch is coupled to the first power source, a first end of the second inversion unit, and a second end of the first inversion unit. The first discharging switch is coupled to the second power source, the second end of the first inversion unit, and the first end of the second inversion unit. The second discharging switch is coupled to the second power source, the second end of the second inversion unit, and the first end of the first inversion unit.

Abstract translation: LCD的源极驱动器包括第一和第二电源，第一和第二反相单元，第一和第二充电开关以及第一和第二放电开关。 第一充电开关耦合到第一电源，第一反转单元的第一端和第二反转单元的第二端。 第二充电开关耦合到第一电源，第二反转单元的第一端和第一反转单元的第二端。 第一放电开关耦合到第二电源，第一反转单元的第二端和第二反转单元的第一端。 第二放电开关耦合到第二电源，第二反转单元的第二端和第一反转单元的第一端。

公开(公告)号：US20120194500A1

公开(公告)日：2012-08-02

申请号：US13343943

申请日：2012-01-05

Applicant: Yuh-Ren YEN ,  Kai-Lan Chuang

Inventor： Yuh-Ren YEN ,  Kai-Lan Chuang

IPC: G09G5/00

CPC classification number: G09G3/3688 ,  G09G3/3275 ,  G09G2310/027 ,  G09G2310/0289

Abstract: A pixel driver includes an image signal module, a data latch module, a level shifter module, and a format conversion module, wherein the format conversion module includes at least one first conversion unit and a second conversion unit. The data latch module stores the digital signal generated by the image signal module temporarily and then transmits the digital signal to the level shifter module. The level shifter module increases the voltage of the digital signal and then transmits the digital signal to the format conversion module, wherein the conversion units generate analogue signals based on the digital signal received to drive different pixel units.

Abstract translation: 像素驱动器包括图像信号模块，数据锁存模块，电平移位器模块和格式转换模块，其中格式转换模块包括至少一个第一转换单元和第二转换单元。 数据锁存模块临时存储由图像信号模块产生的数字信号，然后将数字信号发送到电平移位器模块。 电平移位器模块增加数字信号的电压，然后将数字信号发送到格式转换模块，其中转换单元基于接收的数字信号产生模拟信号以驱动不同的像素单元。

公开(公告)号：US20120139529A1

公开(公告)日：2012-06-07

申请号：US13370219

申请日：2012-02-09

Applicant: Kai-Lan Chuang ,  Guo-Ming Lee ,  Ying-Lieh Chen

Inventor： Kai-Lan Chuang ,  Guo-Ming Lee ,  Ying-Lieh Chen

IPC: G01R11/04

CPC classification number: G06F3/0416

Abstract: A readout apparatus for a current type touch panel is provided. The readout apparatus includes a current-to-voltage converter, a voltage gain unit and an analog-to-digital converter (ADC). The current-to-voltage converter converts a sensing current of the current type touch panel to a sensing voltage. The current-to-voltage converter includes a resistor and a current mirror. The resistor has a first end and a second end. The current mirror has a master current end and a slave current end. An input end of the voltage gain unit is coupled to an output end of the current-to-voltage converter for receiving the sensing voltage. An input end of the ADC is coupled to an output end of the voltage gain unit. An output end of the ADC generates a digital code.

Abstract translation: 本发明提供一种用于电流型触摸面板的读出装置。 读出装置包括电流 - 电压转换器，电压增益单元和模 - 数转换器（ADC）。 电流 - 电压转换器将当前类型的触摸面板的感测电流转换为感测电压。 电流 - 电压转换器包括电阻和电流镜。 电阻器具有第一端和第二端。 电流镜具有主电流端和从电流端。 电压增益单元的输入端耦合到电流 - 电压转换器的输出端，用于接收感测电压。 ADC的输入端耦合到电压增益单元的输出端。 ADC的输出端产生数字代码。

公开(公告)号：US07639227B2

公开(公告)日：2009-12-29

申请号：US11380009

申请日：2006-04-25

Applicant: Kai-Lan Chuang ,  Chuan-Che Lee ,  Wen-Teng Fan

Inventor： Kai-Lan Chuang ,  Chuan-Che Lee ,  Wen-Teng Fan

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/2092

Abstract: A source driver of an LCD includes a first and second power sources, a first and second inversion units, a first and second charging switches, and a first and second discharging switches. The first charging switch is coupled to the first power source, a first end of the first inversion unit, and a second end of the second inversion unit. The second charging switch is coupled to the first power source, a first end of the second inversion unit, and a second end of the first inversion unit. The first discharging switch is coupled to the second power source, the second end of the first inversion unit, and the first end of the second inversion unit. The second discharging switch is coupled to the second power source, the second end of the second inversion unit, and the first end of the first inversion unit.

Abstract translation: LCD的源极驱动器包括第一和第二电源，第一和第二反相单元，第一和第二充电开关以及第一和第二放电开关。 第一充电开关耦合到第一电源，第一反转单元的第一端和第二反转单元的第二端。 第二充电开关耦合到第一电源，第二反转单元的第一端和第一反转单元的第二端。 第一放电开关耦合到第二电源，第一反转单元的第二端和第二反转单元的第一端。 第二放电开关耦合到第二电源，第二反转单元的第二端和第一反转单元的第一端。

公开(公告)号：US08451233B2

公开(公告)日：2013-05-28

申请号：US12030671

申请日：2008-02-13

Applicant: Kai-Lan Chuang

Inventor： Kai-Lan Chuang

IPC: G06F3/041

CPC classification number: G06F3/042 ,  G06F3/0412

Abstract: A sensor pixel and a touch panel using the same are provided herein, wherein the touch panel has m scan lines and n readout lines. The sensor pixel includes a sensing capacitor, a readout transistor, a reset transistor, a base transistor, and a photo transistor. The photo transistor included in the sensor pixel produces a photo leakage current when it is exposed to a light. The light obstruction characteristic of the photo transistor is utilized to detect the locations of the touched sensor pixels. By proper timing control, the present invention not only can be applied to the multi-finger detection, but also is easy to be implemented.

Abstract translation: 本发明提供了一种传感器像素和使用其的触摸面板，其中触摸面板具有m条扫描线和n条读出线。 传感器像素包括感测电容器，读出晶体管，复位晶体管，基极晶体管和光电晶体管。 包含在传感器像素中的光电晶体在暴露于光时产生光漏电流。 利用光电晶体管的光阻碍特征来检测触摸的传感器像素的位置。 通过适当的定时控制，本发明不仅可以应用于多指检测，而且易于实现。

公开(公告)号：US20110181519A1

公开(公告)日：2011-07-28

申请号：US12694175

申请日：2010-01-26

Applicant: Kun-Hua Tsai ,  Kai-Lan Chuang

Inventor： Kun-Hua Tsai ,  Kai-Lan Chuang

IPC: G06F3/041 ,  G09G5/00

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

Abstract: A system of driving a touch screen comprises a touch sensitive panel including a plurality of first sensor lines parallel to a first direction and a plurality of second sensor lines parallel to a second direction, a driving circuit coupled with the first sensor lines, a first sensing circuit, and a controller coupled with the first sensing circuit. The driving circuit is configured to sequentially apply a first scanning signal through each of the first sensor lines. The first sensing circuit can report a plurality of first response signals that are transmitted through the second sensor lines in response to each applied first scanning signal. The controller can identify one or more touch location based on the first response signals reported by the first sensing circuit, and track each identified touch location. In other embodiments, methods of driving a touch screen are also described.

Abstract translation: 驱动触摸屏的系统包括触敏面板，其包括平行于第一方向的多个第一传感器线和平行于第二方向的多个第二传感器线，与第一传感器线耦合的驱动电路，第一感测 电路和与第一感测电路耦合的控制器。 驱动电路被配置为顺序地施加通过每个第一传感器线的第一扫描信号。 第一感测电路可以响应于每个所施加的第一扫描信号报告通过第二传感器线路传输的多个第一响应信号。 控制器可以基于由第一感测电路报告的第一响应信号来识别一个或多个触摸位置，并跟踪每个识别的触摸位置。 在其他实施例中，还描述了驱动触摸屏的方法。

公开(公告)号：US07863966B1

公开(公告)日：2011-01-04

申请号：US12561857

申请日：2009-09-17

Applicant: Kai-Lan Chuang ,  Guo-Ming Lee

Inventor： Kai-Lan Chuang ,  Guo-Ming Lee

IPC: H03K17/96

CPC classification number: G06F3/044

Abstract: A readout circuit for touch panel includes first and second switches, an operational amplifier (OP-AMP), a feedback capacitor, a comparison unit, and a counter. A first input terminal and an output terminal of the OP-AMP are respectively coupled to a second terminal of the first switch and an input terminal of the comparison unit. A second input terminal of the OP-AMP receives a reference voltage. Two terminals of the feedback capacitor and the second switch are respectively coupled to the first input terminal and the output terminal of the OP-AMP. The comparison unit selects first or second threshold voltages to compare with an output of the OP-AMP according to a output of the comparison unit. An input terminal of the counter receives the output of the comparison unit.

Abstract translation: 用于触摸面板的读出电路包括第一和第二开关，运算放大器（OP-AMP），反馈电容器，比较单元和计数器。 OP-AMP的第一输入端子和输出端子分别耦合到第一开关的第二端子和比较单元的输入端子。 OP-AMP的第二输入端接收参考电压。 反馈电容器和第二开关的两个端子分别耦合到OP-AMP的第一输入端子和输出端子。 比较单元根据比较单元的输出，选择第一或第二阈值电压与OP-AMP的输出进行比较。 计数器的输入端接收比较单元的输出。

公开(公告)号：US20090115735A1

公开(公告)日：2009-05-07

申请号：US11983060

申请日：2007-11-06

Applicant: Kai-Lan Chuang

Inventor： Kai-Lan Chuang

IPC: H01L27/00 ,  G06F3/041

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/044

Abstract: A sensor with pressure-induced varied capacitance is disclosed. Each sensor pixel circuit of the sensor includes a touch capacitor, a charge TFT for storing charge at the touch capacitor according to a previous scan line, and a readout TFT for reading out voltage across the touch capacitor according to a present scan line.

Abstract translation: 公开了一种具有压力变化电容的传感器。 传感器的每个传感器像素电路包括触摸电容器，用于根据先前的扫描线在触摸电容器处存储电荷的电荷TFT，以及根据本扫描线读出触摸电容器两端的电压的读出TFT。

公开(公告)号：US08274489B2

公开(公告)日：2012-09-25

申请号：US12561868

申请日：2009-09-17

Applicant: Kai-Lan Chuang ,  Guo-Ming Lee ,  Ying-Lieh Chen

Inventor： Kai-Lan Chuang ,  Guo-Ming Lee ,  Ying-Lieh Chen

IPC: G06F3/041

CPC classification number: G06F3/0416

Abstract: A readout apparatus and a multi-channel readout apparatus for a touch panel are provided to integrate different types of readout circuit. The readout apparatus set to a first mode reads the touch panel with a small amount of charges through an integrator. The readout apparatus set to a second mode reads a sensing current of a current type touch panel through a current to voltage converting unit and an inverting amplifier, so as to save a chip area. The multi-channel readout apparatus set to a third mode applies multiple channels to alternatively share an integrator to read the touch panel with a large amount of charges, so that an amount of feedback capacitors (integral capacitors) having a great area can be greatly reduced. Therefore, readout apparatus of the present invention can not only reduce a chip area, but can also be applied to various types of the touch panel.

Abstract translation: 提供用于触摸面板的读出装置和多通道读出装置以集成不同类型的读出电路。 设置为第一模式的读出装置通过积分器以少量的电荷读取触摸面板。 设置为第二模式的读出装置通过电流 - 电压转换单元和反相放大器读取当前型触摸面板的感测电流，从而节省芯片面积。 设置为第三模式的多通道读出装置施加多个通道以交替地共享积分器以大量电荷读取触摸面板，使得具有大面积的反馈电容器（积分电容器）的量可以大大降低 。 因此，本发明的读出装置不仅可以减少芯片面积，而且可以应用于各种类型的触摸面板。