公开(公告)号：US08183518B2

公开(公告)日：2012-05-22

申请号：US12502167

申请日：2009-07-13

申请人： Soon-Sung Ahn ,  Yong-Sung Park ,  Do-Youb Kim ,  Deok-Young Choi ,  In-Ho Choi

发明人： Soon-Sung Ahn ,  Yong-Sung Park ,  Do-Youb Kim ,  Deok-Young Choi ,  In-Ho Choi

IPC分类号： G06M7/00 ,  G06F3/041

CPC分类号： G06F3/042

摘要： Provided is a driving circuit of a photosensing touch panel including: a first photodiode coupled between a first voltage source and a sensing node and for generating a first current in accordance with a brightness of an external incident light and a heat of a finger; a second photodiode coupled between the sensing node and a second voltage source and for generating a second current in accordance with the heat of the finger, the second photodiode being shielded from the external incident light; and an amplifier circuit for detecting the brightness of the external incident light regardless of the heat of the finger by subtracting the second current from the first current at the sensing node.

摘要翻译： 提供了一种感光触摸面板的驱动电路，包括：耦合在第一电压源和感测节点之间的第一光电二极管，用于根据外部入射光的亮度和手指的热量产生第一电流; 第二光电二极管，耦合在所述感测节点和第二电压源之间，并且用于根据所述手指的热量产生第二电流，所述第二光电二极管屏蔽所述外部入射光; 以及放大器电路，用于通过从感测节点处的第一电流减去第二电流来检测外部入射光的亮度，而不管手指的热量。

公开(公告)号：US20100097350A1

公开(公告)日：2010-04-22

申请号：US12568055

申请日：2009-09-28

申请人： Deok-Young CHOI ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

发明人： Deok-Young CHOI ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

IPC分类号： G06F3/042 ,  G09G5/00

CPC分类号： G06F3/042 ,  G06F3/0412

摘要： A photo sensing device, a photo sensing circuit, a touch panel, and a method of sensing an output value of a photo sensing element, in order to remove the influence of a threshold voltage. The device includes a photo sensing unit generating a sensing current according to an intensity of incident light, a driving unit outputting a driving current according to the sensing current generated by the photo sensing unit, and a scanning unit outputting on a data line the driving current of the driving unit in a first mode corresponding to the photo sensing unit gathering light for a predetermined period of time and outputting the driving current in a second mode corresponding to the photo sensing unit initializing.

摘要翻译： 光感测装置，感光电路，触摸面板以及检测感光元件的输出值的方法，以便消除阈值电压的影响。 该装置包括：感光单元，根据入射光的强度产生感测电流;驱动单元，根据感光单元产生的感测电流输出驱动电流;以及扫描单元，在数据线上输出驱动电流 所述驱动单元以对应于所述光感测单元收集预定时间段的第一模式，并以对应于所述感光单元初始化的第二模式输出所述驱动电流。

公开(公告)号：US20100097334A1

公开(公告)日：2010-04-22

申请号：US12568931

申请日：2009-09-29

申请人： Deok-Young Choi ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

发明人： Deok-Young Choi ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

IPC分类号： G06F3/041 ,  H01J40/00

CPC分类号： G06F3/0412 ,  G06F3/042

摘要： A light sensing circuit, a method of driving the same, and a touch panel including the light sensing circuit, the light sensing circuit including a photodiode generating current according to the brightness of light incident from the outside; a driving transistor having a first electrode to which a first power voltage is applied, a second electrode, and a gate electrode electrically connected to a cathode of the photodiode; a first reset transistor having a first electrode to which an initialization voltage is applied, a second electrode connected to the gate electrode of the driving transistor, and a gate electrode to which a previous scan signal is applied; and a shielding capacitor disposed between the gate electrode of the driving transistor and the cathode of the photodiode. Accordingly, the brightness of light incident on the photodiode can be accurately determined by initializing the cathode of the photodiode by using a constant voltage.

摘要翻译： 光感测电路，其驱动方法以及包括光感测电路的触摸面板，所述光感测电路包括根据从外部入射的光的亮度产生电流的光电二极管; 具有施加有第一电源电压的第一电极的驱动晶体管，与所述光电二极管的阴极电连接的第二电极和栅电极; 第一复位晶体管，具有施加初始化电压的第一电极，连接到驱动晶体管的栅电极的第二电极和施加了先前扫描信号的栅电极; 以及设置在驱动晶体管的栅电极和光电二极管的阴极之间的屏蔽电容器。 因此，通过使用恒定电压初始化光电二极管的阴极，可以准确地确定入射到光电二极管上的光的亮度。

公开(公告)号：US09001095B2

公开(公告)日：2015-04-07

申请号：US12915487

申请日：2010-10-29

申请人： Sung-Un Park ,  Soon-Sung Ahn ,  Do-Youb Kim

发明人： Sung-Un Park ,  Soon-Sung Ahn ,  Do-Youb Kim

IPC分类号： G06F3/038 ,  G09G5/00 ,  H03K3/356 ,  G09G3/20

CPC分类号： G09G3/20 ,  G09G2360/144

摘要： A reference voltage setting apparatus including: a current generator having a first device to supply a first dark current and a second device to supply a second dark current; a first operational amplifying unit connected to the current generator; and a voltage setting unit connected to the first operational amplifying unit and setting a reference voltage having a compensated offset voltage of the first operational amplifying unit, and an illumination sensing device and a display device including the reference voltage setting apparatus.

摘要翻译： 一种参考电压设定装置，包括：电流发生器，具有提供第一暗电流的第一装置和提供第二暗电流的第二装置; 连接到电流发生器的第一运算放大单元; 以及电压设定单元，连接到第一运算放大单元，并设置具有第一运算放大单元的补偿偏移电压的参考电压，以及照明感测装置和包括基准电压设定装置的显示装置。

公开(公告)号：US08754875B2

公开(公告)日：2014-06-17

申请号：US12581292

申请日：2009-10-19

申请人： Soon-Sung Ahn ,  Yong-Sung Park ,  Do-Youb Kim ,  Deok-Young Choi ,  In-Ho Choi

发明人： Soon-Sung Ahn ,  Yong-Sung Park ,  Do-Youb Kim ,  Deok-Young Choi ,  In-Ho Choi

IPC分类号： G06F3/038 ,  H01L31/00

CPC分类号： G06F3/0412 ,  G06F3/042

摘要： A light sensing circuit of a touch panel includes a photodiode including an anode and a cathode; a driving transistor including a gate electrode connected to the cathode of the photodiode, a first electrode to receive a first ground voltage, and a second electrode; a first switching transistor including a first electrode connected to the second electrode of the driving transistor, a second electrode to output a data signal, and a gate electrode to receive a scan signal; a first capacitor including a first terminal connected to the cathode of the photodiode, and a second terminal; and a voltage compensating unit to apply a compensation voltage to the second terminal of the first capacitor.

摘要翻译： 触摸面板的感光电路包括：包括阳极和阴极的光电二极管; 驱动晶体管，其包括连接到所述光电二极管的阴极的栅电极，接收第一接地电压的第一电极和第二电极; 第一开关晶体管，包括连接到驱动晶体管的第二电极的第一电极，输出数据信号的第二电极和用于接收扫描信号的栅电极; 第一电容器，包括连接到所述光电二极管的阴极的第一端子和第二端子; 以及电压补偿单元，用于向第一电容器的第二端施加补偿电压。

公开(公告)号：US08624874B2

公开(公告)日：2014-01-07

申请号：US12568055

申请日：2009-09-28

申请人： Deok-Young Choi ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

发明人： Deok-Young Choi ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

IPC分类号： G06F3/042

CPC分类号： G06F3/042 ,  G06F3/0412

摘要： A photo sensing device, a photo sensing circuit, a touch panel, and a method of sensing an output value of a photo sensing element, in order to remove the influence of a threshold voltage. The device includes a photo sensing unit generating a sensing current according to an intensity of incident light, a driving unit outputting a driving current according to the sensing current generated by the photo sensing unit, and a scanning unit outputting on a data line the driving current of the driving unit in a first mode corresponding to the photo sensing unit gathering light for a predetermined period of time and outputting the driving current in a second mode corresponding to the photo sensing unit initializing.

摘要翻译： 光感测装置，感光电路，触摸面板以及检测感光元件的输出值的方法，以便消除阈值电压的影响。 该装置包括：感光单元，根据入射光的强度产生感测电流;驱动单元，根据感光单元产生的感测电流输出驱动电流;以及扫描单元，在数据线上输出驱动电流 所述驱动单元以对应于所述光感测单元收集预定时间段的第一模式，并以对应于所述感光单元初始化的第二模式输出所述驱动电流。

公开(公告)号：US08466904B2

公开(公告)日：2013-06-18

申请号：US12585616

申请日：2009-09-18

申请人： Soon-Sung Ahn ,  Do-Youb Kim ,  Sung-Un Park

发明人： Soon-Sung Ahn ,  Do-Youb Kim ,  Sung-Un Park

IPC分类号： G06F3/038

CPC分类号： G01J1/44 ,  G01J1/1626 ,  G01J1/46

摘要： A light sensing circuit for use in auto brightness control (ABC), and a flat panel display including the light sensing circuit. The light sensing circuit includes a first photodiode; a second photodiode which is electrically connected to the first photodiode and includes a shielding film for shielding externally incident light; a first voltage fixing unit which is connected to the first photodiode and the second photodiode and maintains a voltage applied to the first photodiode at a certain value; and an analog-to-digital converter (ADC) which generates a digital value that depends on a current flowing in the first photodiode and the second photodiode. Accordingly, the light sensing circuit can precisely sense the brightness of a surrounding environment and drive a flat panel display with the most suitable brightness.

摘要翻译： 用于自动亮度控制（ABC）的光感测电路和包括光感测电路的平板显示器。 光感测电路包括第一光电二极管; 第二光电二极管，其电连接到第一光电二极管，并且包括用于屏蔽外部入射光的屏蔽膜; 第一电压固定单元，连接到第一光电二极管和第二光电二极管，并将施加到第一光电二极管的电压保持在一定值; 以及模数转换器（ADC），其产生取决于在第一光电二极管和第二光电二极管中流动的电流的数字值。 因此，光感测电路可以精确地感测周围环境的亮度并以最合适的亮度驱动平板显示器。

公开(公告)号：US20110057893A1

公开(公告)日：2011-03-10

申请号：US12801336

申请日：2010-06-03

申请人： Do-Youb Kim ,  Won-Kyu Kwak ,  Brent Jang ,  Ja-Seung Ku ,  Soon-Sung Ahn

发明人： Do-Youb Kim ,  Won-Kyu Kwak ,  Brent Jang ,  Ja-Seung Ku ,  Soon-Sung Ahn

IPC分类号： G06F3/041

CPC分类号： G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G06F2203/04112

摘要： A touch screen panel comprises a glass substrate having a display area and a non-display area, a plurality of sense patterns on the display area, a plurality of metal pads on a periphery of the display area and on the non-display area, a plurality of sense lines on the non-display area, and dummy patterns on an area between the plurality of sense lines on the non-display area. The non-display area is outside a periphery of the display area. Each of the plurality of the sense lines is coupled to one of the plurality of metal pads. The display area and non-display area of the glass substrate respectively correspond to a display area and non-display area of an image display device to which the touch screen panel is provided.

摘要翻译： 触摸屏面板包括具有显示区域和非显示区域的玻璃基板，显示区域上的多个感测图案，显示区域周边上的多个金属焊盘和非显示区域上的多个金属焊盘， 非显示区域上的多条感测线，以及非显示区域上的多条感测线之间的区域上的虚拟图案。 非显示区域在显示区域的外围。 多个感测线中的每一条耦合到多个金属焊盘之一。 玻璃基板的显示区域和非显示区域分别对应于设置有触摸屏面板的图像显示装置的显示区域和非显示区域。

公开(公告)号：US20110050600A1

公开(公告)日：2011-03-03

申请号：US12662987

申请日：2010-05-14

申请人： Do-Youb Kim ,  Yong-Sung Park ,  Deok-Young Choi ,  Soon-Sung Ahn ,  In-Ho Choi ,  Tae-Jin Kim ,  Joo-Hyeton Jeong ,  Brent Jang ,  Ki-Ju Kim

发明人： Do-Youb Kim ,  Yong-Sung Park ,  Deok-Young Choi ,  Soon-Sung Ahn ,  In-Ho Choi ,  Tae-Jin Kim ,  Joo-Hyeton Jeong ,  Brent Jang ,  Ki-Ju Kim

IPC分类号： G06F3/041 ,  H01L27/146

CPC分类号： G06F3/0412 ,  G02F1/13338 ,  G06F3/042 ,  H01L27/14643

摘要： A light sensor circuit, includes a light receiving element coupled to a first power supply, a capacitor coupled between the light receiving element and a second power supply, a first transistor including a gate electrode coupled to a first electrode of the capacitor, and a second transistor including a gate electrode coupled to a selection signal line, wherein the first transistor is coupled between the selection signal line and a first electrode of the second transistor, and the second transistor is coupled between a second electrode of the first transistor and an output signal line.

摘要翻译： 一种光传感器电路，包括耦合到第一电源的光接收元件，耦合在光接收元件和第二电源之间的电容器，包括耦合到电容器的第一电极的栅电极的第一晶体管， 晶体管，其包括耦合到选择信号线的栅电极，其中所述第一晶体管耦合在所述选择信号线和所述第二晶体管的第一电极之间，并且所述第二晶体管耦合在所述第一晶体管的第二电极和输出信号 线。

公开(公告)号：US20100220069A1

公开(公告)日：2010-09-02

申请号：US12612241

申请日：2009-11-04

申请人： Deok-Young Choi ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

发明人： Deok-Young Choi ,  Yong-Sung Park ,  Do-Youb Kim ,  Soon-Sung Ahn ,  In-Ho Choi

IPC分类号： G06F3/038 ,  G01J1/44 ,  G06F3/041

CPC分类号： G01J1/44 ,  G01J1/02 ,  G01J1/0252 ,  G06F3/042

摘要： A light sensing circuit, a method of controlling the same, and a touch panel including the light sensing circuit. In the method of controlling the light sensing circuit, including sensing light incident on a photodiode, generating current corresponding to the brightness of the sensed light, amplifying the current using a driving transistor, and outputting the amplified current, the ambient temperature is sensed, and a time period during which the light is sensed by the photodiode or the amplified current is output is controlled by the sensed ambient temperature. Thus, the sensitivity of the light sensing circuit may be constantly maintained without being influenced by the ambient temperature.

摘要翻译： 光感测电路，其控制方法和包括光感测电路的触摸面板。 在控制光感测电路的方法中，包括感测入射在光电二极管上的光，产生对应于感测光的亮度的电流，使用驱动晶体管放大电流，并输出放大的电流，感测环境温度， 由光电二极管或放大电流感测光的时间段由感测到的环境温度控制。 因此，光感测电路的灵敏度可以不受环境温度的影响而恒定地保持。