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：US08350835B2

公开(公告)日：2013-01-08

申请号：US12674359

申请日：2008-08-13

申请人： Hiromi Katoh ,  Christopher Brown

发明人： Hiromi Katoh ,  Christopher Brown

IPC分类号： G09G5/00

CPC分类号： H04N5/3696 ,  G01J1/46 ,  G02F1/13338 ,  G02F2201/58 ,  G06F3/0412 ,  G06F3/042 ,  H01L27/3269 ,  H04N5/3559

摘要： Dynamic range is widened in a display device with a photosensor that can read an image due to having a photodetection element inside a pixel thereof. A sensor driving circuit switches ON a reset signal (RST) that is supplied via reset signal bus line, and after a predetermined time has elapsed, switches ON a readout signal (RWS) that is supplied via readout signal bus line. Thus, in the photosensor, from which a photosensor signal is output in accordance with an amount of light received by the photosensor in the predetermined time, the capacitance of a capacitor provided in the photosensor is made variable from when the reset signal (RST) is supplied to the photosensor until when the predetermined time has elapsed.

摘要翻译： 在具有光传感器的显示装置中，由于在像素内部具有光电检测元件而能够读取图像，动态范围变宽。 传感器驱动电路接通通过复位信号总线提供的复位信号（RST），在经过预定时间之后，接通通过读出信号总线提供的读出信号（RWS）。 因此，在光电传感器中，根据光电传感器在预定时间内接收的光量输出光电传感器信号，使得设置在光传感器中的电容器的电容从复位信号（RST）为 提供给光传感器，直到经过了预定时间。

公开(公告)号：US08248395B2

公开(公告)日：2012-08-21

申请号：US12744997

申请日：2008-11-17

申请人： Mayuko Sakamoto ,  Hiromi Katoh ,  Christopher Brown

发明人： Mayuko Sakamoto ,  Hiromi Katoh ,  Christopher Brown

IPC分类号： G06F3/038 ,  G09G5/00

CPC分类号： G02F1/13318 ,  G02F1/13338 ,  G02F1/133514 ,  G02F1/1362 ,  G02F2001/13312 ,  H01L27/14621 ,  H01L27/14632 ,  H01L27/14643

摘要： An image display device includes an image display panel (4) with an image detection function, and includes a plurality of pixels disposed in a matrix and a plurality of photosensors (17) disposed in correspondence with the pixels in a display region. The pixels each have a plurality of sub-pixels (5), and a color filter in which colors of color layers are formed in correspondence with the sub-pixels (5) is provided. The photosensors (17) have an incident light wavelength characteristic in which a photoreception sensitivity to light that passes through, among the colors of color layers, the color layer whose color is most toward a short wavelength side is higher than a photoreception sensitivity to light that passes through, among the colors of color layers, the color layer whose color is most toward a long wavelength side, and the photosensors (17) are disposed such that, with respect to a thickness direction of the image display panel (4), photodetection regions (19) of the photosensors (17) overlap with, among the plurality of color layers, the color layer whose color is most toward the long wavelength side. The present invention enables reducing the reflection of a display image on sensor output caused by optical interference.

摘要翻译： 图像显示装置包括具有图像检测功能的图像显示面板（4），并且包括以矩阵形式设置的多个像素和与显示区域中的像素对应设置的多个光电传感器（17）。 像素各具有多个子像素（5），并且提供了与子像素（5）对应地形成有彩色层的彩色滤光器。 光传感器（17）具有入射光波长特性，其中对于颜色最浅的波长侧的颜色层，彩色层的颜色中通过的光的感光灵敏度高于对光的感光灵敏度 在颜色层的颜色中，通过颜色最向长波长侧的颜色层，并且光电传感器（17）被设置为使得相对于图像显示面板（4）的厚度方向，光电检测器 光传感器（17）的区域（19）在多个彩色层中与颜色最接近长波长侧的彩色层重叠。 本发明能够减少由光学干涉引起的传感器输出上的显示图像的反射。

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：US20110175871A1

公开(公告)日：2011-07-21

申请号：US12674359

申请日：2008-08-13

申请人： Hiromi Katoh ,  Christopher Brown

发明人： Hiromi Katoh ,  Christopher Brown

IPC分类号： G09G5/00

CPC分类号： H04N5/3696 ,  G01J1/46 ,  G02F1/13338 ,  G02F2201/58 ,  G06F3/0412 ,  G06F3/042 ,  H01L27/3269 ,  H04N5/3559

摘要： Dynamic range is widened in a display device with a photosensor that can read an image due to having a photodetection element inside a pixel thereof. A sensor driving circuit switches ON a reset signal (RST) that is supplied via reset signal bus line, and after a predetermined time has elapsed, switches ON a readout signal (RWS) that is supplied via readout signal bus line. Thus, in the photosensor, from which a photosensor signal is output in accordance with an amount of light received by the photosensor in the predetermined time, the capacitance of a capacitor provided in the photosensor is made variable from when the reset signal (RST) is supplied to the photosensor until when the predetermined time has elapsed.

摘要翻译： 在具有光传感器的显示装置中，由于在像素内部具有光电检测元件而能够读取图像，动态范围变宽。 传感器驱动电路接通通过复位信号总线提供的复位信号（RST），在经过预定时间之后，接通通过读出信号总线提供的读出信号（RWS）。 因此，在光电传感器中，根据光电传感器在预定时间内接收的光量输出光电传感器信号，使得设置在光传感器中的电容器的电容从复位信号（RST）为 提供给光传感器，直到经过了预定时间。

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：US08227887B2

公开(公告)日：2012-07-24

申请号：US12601990

申请日：2008-06-12

申请人： Christopher Brown ,  Hiromi Katoh

发明人： Christopher Brown ,  Hiromi Katoh

IPC分类号： H01L33/00

CPC分类号： G02F1/13318 ,  G02F1/1362 ,  G02F2001/13312 ,  G02F2201/58 ,  H01L31/02164 ,  H01L31/02165 ,  H01L31/035281 ,  H01L31/105 ,  Y02E10/50

摘要： Provided are a photodetector capable of suppressing variations in the output characteristics among photodiodes, and a display device provided with the photodetector. A display device in use has an active matrix substrate (20) including a transparency base substrate (2), a plurality of active elements and a photodetector. The photodetector includes a light-shielding layer (3) provided on one main surface of the base substrate (2), a photodiode (1) arranged on an upper layer of the light-shielding layer (3), and an electrode (12) arranged in the vicinity of the photodiode (1) on the upper layer of the light-shielding layer (3). The photodiode (1) includes a silicon layer (11), and the silicon layer (11) is insulated electrically from the light-shielding layer (3). The electrode (12) is insulated electrically from the light-shielding layer (3) and the silicon layer (11). The light-shielding layer (3) is formed so that a part thereof is overlapped with the entire silicon layer (11) and the other part is overlapped with the electrode (12) in the thickness direction of the base substrate (2).

摘要翻译： 提供一种能够抑制光电二极管之间的输出特性的变化的光检测器和具有该光检测器的显示装置。 使用的显示装置具有包括透明性基板（2），多个有源元件和光电检测器的有源矩阵基板（20）。 光电检测器包括设置在基底基板（2）的一个主表面上的遮光层（3），布置在遮光层（3）的上层上的光电二极管（1）和电极（12） 布置在遮光层（3）的上层上的光电二极管（1）附近。 光电二极管（1）包括硅层（11），硅层（11）与遮光层（3）电绝缘。 电极（12）与遮光层（3）和硅层（11）电绝缘。 遮光层（3）形成为使得其一部分与整个硅层（11）重叠，另一部分在基底（2）的厚度方向上与电极（12）重叠。

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：US08164719B2

公开(公告)日：2012-04-24

申请号：US12445153

申请日：2007-06-21

申请人： Hiromi Katoh ,  Hiroyuki Ogawa ,  Christopher Brown ,  Benjamin James Hadwen

发明人： Hiromi Katoh ,  Hiroyuki Ogawa ,  Christopher Brown ,  Benjamin James Hadwen

IPC分类号： G02F1/1333 ,  G02F1/133

CPC分类号： G02F1/136209 ,  G02F2001/13312 ,  G02F2202/10 ,  H01L31/02164

摘要： The present invention provides a liquid crystal display device capable of preventing the occurrence of dark currents in photodiodes. Thus, the liquid crystal display device includes a liquid crystal display panel 1 including an active matrix substrate and a backlight 13 for illuminating the liquid crystal display panel. The active matrix substrate 1 includes a photodiode 7 formed by a silicon film and a light shielding film 8 for shielding the photodiode 7 against illumination light from the backlight 13. The photodiode 7 and the light shielding film 8 are provided on a base substrate 5. The light shielding film 8 is formed by a semiconductor or an insulator. Preferably, the photodiode 7 is made of, for example, polycrystalline silicon or continuous grain silicon so as to have a characteristic that its sensitivity increases as the wavelength of light entering the photodiode becomes shorter. The light-shielding film 8 is formed by a silicon film, for example amorphous silicon, that reduces the transmittance of light entering the light shielding film as the wavelength of the light becomes shorter.

摘要翻译： 本发明提供能够防止光电二极管中的暗电流发生的液晶显示装置。 因此，液晶显示装置包括：液晶显示面板1，其包括有源矩阵基板和用于照亮液晶显示面板的背光源13。 有源矩阵基板1包括由硅膜形成的光电二极管7和用于屏蔽来自背光源13的照明光的光电二极管7的遮光膜8.光电二极管7和遮光膜8设置在基底基板5上。 遮光膜8由半导体或绝缘体形成。 优选地，光电二极管7例如由多晶硅或连续晶粒硅制成，以具有随着进入光电二极管的光的波长变短的灵敏度而增加的特性。 遮光膜8由硅膜（例如非晶硅）形成，其随着光的波长变短而降低进入遮光膜的光的透射率。

公开(公告)号：US20110175086A1

公开(公告)日：2011-07-21

申请号：US13120427

申请日：2009-05-14

申请人： Hiromi Katoh ,  Christopher Brown ,  Tomohiro Kimura

发明人： Hiromi Katoh ,  Christopher Brown ,  Tomohiro Kimura

IPC分类号： H01L31/0376 ,  H01L31/20

CPC分类号： H01L27/14692 ,  H01L27/14643 ,  H01L31/1055

摘要： A photodiode (7) formed in a polycrystalline silicon layer or a continuous grain silicon layer on a base substrate (5) of a display device includes a semiconductor region of a first conductivity-type (n layer (21)), an intrinsic semiconductor region (i layer (22)), and a semiconductor region of a second conductivity-type (p layer (23)) that is opposite from the first conductivity-type. At least a portion of the intrinsic semiconductor region (i layer (22)) is amorphous silicon.

摘要翻译： 形成在显示装置的基板（5）上的多晶硅层或连续晶粒硅层中的光电二极管（7）包括第一导电型（n层（21））的半导体区域，本征半导体区域 （i层（22））和与第一导电型相反的第二导电型（p层（23））的半导体区域。 本征半导体区域（i层（22））的至少一部分是非晶硅。