公开(公告)号：US08803791B2

公开(公告)日：2014-08-12

申请号：US13511957

申请日：2010-11-30

申请人： Yasuhiro Sugita ,  Kohei Tanaka ,  Hiromi Katoh ,  Christopher Brown

发明人： Yasuhiro Sugita ,  Kohei Tanaka ,  Hiromi Katoh ,  Christopher Brown

IPC分类号： G09G3/36 ,  G02F1/1362 ,  G06F3/042 ,  G06F3/041 ,  G02F1/133

CPC分类号： G06F3/0412 ,  G02F1/13624 ,  G02F2001/13312 ,  G06F3/042 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2360/144

摘要： Provided is a display device that includes an optical sensor having a high sensitivity in which a potential difference of an accumulation node due to an illuminance difference on a light receiving surface after boosting is set greater than a potential difference of the same at an end of an integration period. The display device includes an optical sensor in a pixel region. The optical sensor includes a diode D1; a reset signal line RST for supplying a reset signal; a readout signal line RWS for supplying a readout signal; an accumulation node having a potential (VINT) that varies with an amount of light received by the diode D1 during a period from supply of the reset signal to supply of the readout signal; an amplifying element C1 for amplifying VINT according to the readout signal; and a sensor switching element M2 for reading out the amplified potential and outputting the same to an output line. A potential of a light shielding film LS provided on a back side of the diode is fixed to a constant potential VLS satisfying the following formula: VLS≧VRST.H.

摘要翻译： 提供一种显示装置，其具有高感光度的光学传感器，其中由于在升压之后的受光面上的照度差引起的累积节点的电位差设定为大于其末端的电位差， 整合期 显示装置包括像素区域中的光学传感器。 光学传感器包括二极管D1; 用于提供复位信号的复位信号线RST; 用于提供读出信号的读出信号线RWS; 累积节点具有在从复位信号的供给到读出信号的供给期间随二极管D1接收的光量而变化的电位（VINT）; 用于根据读出信号放大VINT的放大元件C1; 以及用于读出放大电位并将其输出到输出线的传感器开关元件M2。 设置在二极管背面的遮光膜LS的电位固定为满足以下公式的恒定电位VLS：VLS≥VRST.H。

公开(公告)号：US20120086671A1

公开(公告)日：2012-04-12

申请号：US13378934

申请日：2010-06-11

申请人： Christopher Brown ,  Hiromi Katoh ,  Kohei Tanaka

发明人： Christopher Brown ,  Hiromi Katoh ,  Kohei Tanaka

IPC分类号： G06F3/045

CPC分类号： G06F3/0412 ,  G06F3/044

摘要： A capacitance variation detection circuit is provided in which detection sensitivity to variations in the liquid crystal capacitance can be improved. A capacitance variation detection circuit (10) includes a first variable capacitance portion (CLC1) connected to the voltage supply line; a second variable capacitance portion (CLC2) connected in series with the first variable capacitance portion (CLC1); and a TFT (15) connected to the second variable capacitance portion (CLC2) to be driven depending on the capacitance value of the first variable capacitance (CLC1) and the capacitance value of the second variable capacitance (CLC2), to output an electrical signal corresponding to these capacitance values.

摘要翻译： 提供一种电容变化检测电路，其中可以提高对液晶电容变化的检测灵敏度。 电容变化检测电路（10）包括与电压供给线连接的第一可变电容部（CLC1） 与第一可变电容部分（CLC1）串联连接的第二可变电容部分（CLC2）; 以及根据第一可变电容（CLC1）的电容值和第二可变电容（CLC2）的电容值而驱动的第二可变电容部分（CLC2）的TFT（15），以输出电信号 对应于这些电容值。

公开(公告)号：US20120261557A1

公开(公告)日：2012-10-18

申请号：US13511957

申请日：2010-11-30

申请人： Yasuhiro Sugita ,  Kohei Tanaka ,  Hiromi Katoh ,  Christopher Brown

发明人： Yasuhiro Sugita ,  Kohei Tanaka ,  Hiromi Katoh ,  Christopher Brown

IPC分类号： H01L31/12

CPC分类号： G06F3/0412 ,  G02F1/13624 ,  G02F2001/13312 ,  G06F3/042 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2360/144

摘要： Provided is a display device that includes an optical sensor having a high sensitivity in which a potential difference of an accumulation node due to an illuminance difference on a light receiving surface after boosting is set greater than a potential difference of the same at an end of an integration period. The display device includes an optical sensor in a pixel region. The optical sensor includes a diode D1; a reset signal line RST for supplying a reset signal; a readout signal line RWS for supplying a readout signal; an accumulation node having a potential (VINT) that varies with an amount of light received by the diode D1 during a period from supply of the reset signal to supply of the readout signal; an amplifying element C1 for amplifying VINT according to the readout signal; and a sensor switching element M2 for reading out the amplified potential and outputting the same to an output line. A potential of a light shielding film LS provided on a back side of the diode is fixed to a constant potential VLS satisfying the following formula: VLS≧VRST.H.

摘要翻译： 提供一种显示装置，其具有高灵敏度的光学传感器，其中由于在升压之后的受光面上的照度差导致的累积节点的电位差被设定为大于其末端的电位差 整合期 显示装置包括像素区域中的光学传感器。 光学传感器包括二极管D1; 用于提供复位信号的复位信号线RST; 用于提供读出信号的读出信号线RWS; 累积节点具有在从复位信号的供给到读出信号的供给期间随二极管D1接收的光量而变化的电位（VINT）; 用于根据读出信号放大VINT的放大元件C1; 以及用于读出放大电位并将其输出到输出线的传感器开关元件M2。 设置在二极管背面的遮光膜LS的电位固定为满足以下公式的恒定电位VLS：VLS≥VRST.H。

公开(公告)号：US20120113060A1

公开(公告)日：2012-05-10

申请号：US13381593

申请日：2010-06-23

申请人： Hiromi Katoh ,  Christopher Brown ,  Kohei Tanaka

发明人： Hiromi Katoh ,  Christopher Brown ,  Kohei Tanaka

IPC分类号： G06F3/042 ,  G01J1/44

CPC分类号： G06F3/0412 ,  G01J1/4204 ,  G01J1/46 ,  G02F2001/13312 ,  G06F3/042

摘要： A sensor circuit or a display apparatus from which a highly accurate sensor output can be obtained includes a photodiode (photodetecting element); a capacitor connected to the photodiode via an accumulation node; a reset signal line to which a reset signal is supplied; a readout signal line to which a readout signal is supplied; a thin-film transistor (sensor switching element) that makes the accumulation node and an output line conductive with respect to each other and outputs an output signal according to the potential of the accumulation node; a microswitch that is capable of switching connection and disconnection between the accumulation node and an input electrode and provides connection when a pressure is applied by a touching operation; and a thin-film (control switching element) for switching conduction and non-conduction between the microswitch and the accumulation node.

摘要翻译： 可以获得高精度传感器输出的传感器电路或显示装置包括光电二极管（光电检测元件）; 经由累积节点连接到光电二极管的电容器; 提供复位信号的复位信号线; 提供读出信号的读出信号线; 使得所述累积节点和输出线彼此导通并根据所述累积节点的电位输出输出信号的薄膜晶体管（传感器开关元件）; 能够切换蓄积节点与输入电极之间的连接和断开的微型开关，并且通过触摸操作施加压力时提供连接; 以及用于切换微动开关和累积节点之间的导通和非导通的薄膜（控制开关元件）。

公开(公告)号：US20120112047A1

公开(公告)日：2012-05-10

申请号：US13381291

申请日：2010-06-23

申请人： Christopher Brown ,  Hiromi Katoh ,  Kohei Tanaka

发明人： Christopher Brown ,  Hiromi Katoh ,  Kohei Tanaka

IPC分类号： G01J1/46 ,  H01J40/14

CPC分类号： H01L31/101 ,  G02F1/13318 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044 ,  G09G2360/142 ,  G09G2360/144 ,  H01L27/1446

摘要： A sensor circuit or a display apparatus from which a highly accurate sensor output can be obtained includes a photodiode, a capacitor that is connected to the photodiode via an accumulation node and accumulates charges according to an electric current in the photodiode; a sensor switching element transistor that causes the accumulation node and an output line to be conductive with respect to each other in response to a readout signal and outputs an output signal according to the potential of the accumulation node to the output line; a variable capacitor that is provided between the accumulation node and an input electrode, and whose capacitance varies when a pressure is applied by a touching operation; and a control switching element transistor to which a control signal for switching conduction and non-conduction between the variable capacitor and the accumulation node is input.

摘要翻译： 可以从其获得高精度传感器输出的传感器电路或显示装置包括光电二极管，经由累积节点连接到光电二极管的电容器，并根据光电二极管中的电流累积电荷; 传感器开关元件晶体管，其响应于读出信号使所述累积节点和输出线相对于彼此导电，并且根据所述累积节点的电位将输出信号输出到所述输出线; 设置在所述蓄积节点和输入电极之间的可变电容器，并且当通过触摸操作施加压力时，其电容变化; 以及输入用于切换可变电容器和累积节点之间的导通和非导通的控制信号的控制开关元件晶体管。

公开(公告)号：US20110122111A1

公开(公告)日：2011-05-26

申请号：US12995808

申请日：2009-03-06

申请人： Christopher Brown ,  Kohei Tanaka ,  Hiromi Katoh

发明人： Christopher Brown ,  Kohei Tanaka ,  Hiromi Katoh

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： G06F3/0412 ,  G02F1/13338 ,  H01L27/14603 ,  H01L27/14623 ,  H04N1/00129 ,  H04N5/341 ,  H04N5/374 ,  H04N5/3741

摘要： A display device includes a photosensor on an active matrix substrate. The photosensor includes a photodetection element (D1) that receives incident light; reset signal wiring (RST) that supplies a reset signal to the photosensor; readout signal wiring (RWS) that supplies a readout signal to the photosensor; and a sensor switching element (M2) that, in accordance with the readout signal, reads out photocurrent that has been output from the photodetection element (D1) from when the reset signal is supplied until when the readout signal is supplied. The sensor switching element (M2) is a four-terminal amplifier having two control electrodes, such as a double gate TFT or a floating gate TFT.

摘要翻译： 显示装置包括在有源矩阵基板上的光电传感器。 光传感器包括接收入射光的光检测元件（D1）; 复位信号布线（RST），为复合信号提供给光电传感器; 向光传感器提供读出信号的读出信号线（RWS）; 以及传感器开关元件（M2），其根据读出信号从提供复位信号直到提供读出信号时读出从光电检测元件（D1）输出的光电流。 传感器开关元件（M2）是具有两个控制电极的四端子放大器，例如双栅极TFT或浮栅TFT。

公开(公告)号：US08658957B2

公开(公告)日：2014-02-25

申请号：US13381291

申请日：2010-06-23

申请人： Christopher Brown ,  Hiromi Katoh ,  Kohei Tanaka

发明人： Christopher Brown ,  Hiromi Katoh ,  Kohei Tanaka

IPC分类号： H01L27/00

CPC分类号： H01L31/101 ,  G02F1/13318 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044 ,  G09G2360/142 ,  G09G2360/144 ,  H01L27/1446

摘要： A sensor circuit or a display apparatus from which a highly accurate sensor output can be obtained includes a photodiode, a capacitor that is connected to the photodiode via an accumulation node and accumulates charges according to an electric current in the photodiode; a sensor switching element transistor that causes the accumulation node and an output line to be conductive with respect to each other in response to a readout signal and outputs an output signal according to the potential of the accumulation node to the output line; a variable capacitor that is provided between the accumulation node and an input electrode, and whose capacitance varies when a pressure is applied by a touching operation; and a control switching element transistor to which a control signal for switching conduction and non-conduction between the variable capacitor and the accumulation node is input.

摘要翻译： 可以从其获得高精度传感器输出的传感器电路或显示装置包括光电二极管，经由累积节点连接到光电二极管的电容器，并根据光电二极管中的电流累积电荷; 传感器开关元件晶体管，其响应于读出信号使所述累积节点和输出线相对于彼此导电，并且根据所述累积节点的电位将输出信号输出到所述输出线; 设置在所述蓄积节点和输入电极之间的可变电容器，并且当通过触摸操作施加压力时，其电容变化; 以及输入用于切换可变电容器和累积节点之间的导通和非导通的控制信号的控制开关元件晶体管。

公开(公告)号：US20110315860A1

公开(公告)日：2011-12-29

申请号：US13254422

申请日：2010-01-07

申请人： Christopher Brown ,  Kohei Tanaka ,  Hiromi Katoh

发明人： Christopher Brown ,  Kohei Tanaka ,  Hiromi Katoh

IPC分类号： H01J40/14

CPC分类号： G06F3/0412 ,  G02F1/13338 ,  G02F2001/13312 ,  G06F3/042 ,  G09G3/3648

摘要： The present invention relates to a display device including a photosensor in a pixel region. The photosensor of the present invention includes a diode (D1) that receives incident light, reset signal wiring (RST) that supplies a reset signal, readout signal wiring (RWS) that supplies a readout signal, a storage node (INT) whose potential changes in accordance with the amount of light received by the photodetection element in a sensing period, the sensing period being from when the reset signal is supplied until when the readout signal is supplied, an amplification element (C1) that amplifies the potential of the storage node in accordance with the readout signal, and a sensor switching element (M2) for reading out the potential amplified by the amplification element to output wiring (OUT) as sensor circuit output.

摘要翻译： 本发明涉及包括像素区域中的光电传感器的显示装置。 本发明的光传感器包括接收入射光的二极管（D1），提供复位信号的复位信号布线（RST），提供读出信号的读出信号布线（RWS），其电位变化的存储节点（INT） 根据在检测周期中由光检测元件接收的光量，检测周期是从提供复位信号直到提供读出信号时的放大元件（C1）放大存储节点的电位 以及用于读出由放大元件放大的电位以输出布线（OUT）作为传感器电路输出的传感器开关元件（M2）。

公开(公告)号：US20110096049A1

公开(公告)日：2011-04-28

申请号：US13001472

申请日：2009-07-01

申请人： Hiromi Katoh ,  Christopher Brown ,  Kohei Tanaka

发明人： Hiromi Katoh ,  Christopher Brown ,  Kohei Tanaka

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： G06F3/042 ,  G02F2201/58 ,  G06F3/0412 ,  G09G3/20 ,  G09G3/3648 ,  G09G2300/0876 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2360/144

摘要： A display device includes a photosensor in a pixel region of an active matrix substrate. The photosensor includes a photodiode (D1) that receives incident light, a photodiode (D2) as a reference element connected in series to the photodiode (D1) and having a light shielding layer that blocks incident light, a capacitor (CINT), one electrode of which is connected to a connection point between the photodiodes (D1, D2), that accumulates output current from the photodiodes (D1, D2), reset signal wiring (RST) that supplies a reset signal to the photosensor, readout signal wiring (RWS) that supplies a readout signal to the photosensor, and a thin film transistor (M2) having a control electrode connected to a connection point between the photodiodes (D1, D2).

公开(公告)号：US08772699B2

公开(公告)日：2014-07-08

申请号：US13254422

申请日：2010-01-07

申请人： Christopher Brown ,  Kohei Tanaka ,  Hiromi Katoh

发明人： Christopher Brown ,  Kohei Tanaka ,  Hiromi Katoh

IPC分类号： H03F3/08 ,  G06F3/038

CPC分类号： G06F3/0412 ,  G02F1/13338 ,  G02F2001/13312 ,  G06F3/042 ,  G09G3/3648

摘要： The present invention relates to a display device including a photosensor in a pixel region. The photosensor of the present invention includes a diode (D1) that receives incident light, reset signal wiring (RST) that supplies a reset signal, readout signal wiring (RWS) that supplies a readout signal, a storage node (INT) whose potential changes in accordance with the amount of light received by the photodetection element in a sensing period, the sensing period being from when the reset signal is supplied until when the readout signal is supplied, an amplification element (C1) that amplifies the potential of the storage node in accordance with the readout signal, and a sensor switching element (M2) for reading out the potential amplified by the amplification element to output wiring (OUT) as sensor circuit output.

摘要翻译： 本发明涉及包括像素区域中的光电传感器的显示装置。 本发明的光传感器包括接收入射光的二极管（D1），提供复位信号的复位信号布线（RST），提供读出信号的读出信号布线（RWS），其电位变化的存储节点（INT） 根据在检测周期中由光检测元件接收的光量，检测周期是从提供复位信号直到提供读出信号时的放大元件（C1）放大存储节点的电位 以及用于读出由放大元件放大的电位以输出布线（OUT）作为传感器电路输出的传感器开关元件（M2）。