公开(公告)号：US09064460B2

公开(公告)日：2015-06-23

申请号：US13698745

申请日：2011-05-19

申请人： Yasuhiro Sugita ,  Kohei Tanaka ,  Naru Usukura ,  Tadashi Nemoto ,  Hiromi Katoh

发明人： Yasuhiro Sugita ,  Kohei Tanaka ,  Naru Usukura ,  Tadashi Nemoto ,  Hiromi Katoh

IPC分类号： G06F3/042 ,  G09G3/34 ,  G02F1/1333 ,  G02F1/135 ,  G02F1/133

CPC分类号： G09G3/3406 ,  G02F1/13338 ,  G02F1/1354 ,  G02F2001/13312 ,  G06F3/042 ,  G09G2360/145

摘要： Provided is a display device that has a photodetection element in a pixel, and has an input function that is not dependent on the light environment. The display device includes a photosensor in a pixel region. The photosensor includes a first sensor pixel circuit that outputs a sensor signal that corresponds to charge accumulated in an accumulation period when a light source for the sensor is lit, and a second sensor pixel circuit that outputs a sensor signal that corresponds to charge accumulated in an accumulation period when the light source is extinguished. The photosensor has, as operation modes in one frame period, a sensor drive mode for obtaining sensor signals from the first and second sensor pixel circuits, a first correction data acquisition mode for acquiring first correction data for correcting the sensor signal from the first sensor pixel circuit, and a second correction data acquisition mode for acquiring second correction data for correcting the sensor signal from the second sensor pixel circuit.

摘要翻译： 提供一种在像素中具有光电检测元件并具有不依赖于光环境的输入功能的显示装置。 显示装置包括像素区域中的光电传感器。 光传感器包括第一传感器像素电路，其输出对应于当传感器的光源点亮时在累积周期中累积的电荷的传感器信号;以及第二传感器像素电路，其输出对应于在 当光源熄灭时的累积期间。 光传感器具有作为一个帧周期的操作模式的用于从第一和第二传感器像素电路获得传感器信号的传感器驱动模式，用于从第一传感器像素获取用于校正传感器信号的第一校正数据的第一校正数据获取模式 电路，以及第二校正数据获取模式，用于获取用于校正来自第二传感器像素电路的传感器信号的第二校正数据。

公开(公告)号：US09041699B2

公开(公告)日：2015-05-26

申请号：US13698672

申请日：2011-05-19

申请人： Yasuhiro Sugita ,  Kohei Tanaka ,  Naru Usukura ,  Tadashi Nemoto ,  Hiromi Katoh

发明人： Yasuhiro Sugita ,  Kohei Tanaka ,  Naru Usukura ,  Tadashi Nemoto ,  Hiromi Katoh

IPC分类号： G06F3/038 ,  G06F3/041 ,  G06F3/042 ,  G09G3/36 ,  H01L27/146

CPC分类号： G06F3/0412 ,  G06F3/0418 ,  G06F3/042 ,  G09G3/3648 ,  G09G2360/144 ,  H01L27/14621 ,  H01L27/14645

摘要： Provided is a display device that has a photodetection element in a pixel and can automatically correct a photosensor signal during operation, while resolving offset error with respect to the true black level or white level. As operation modes, a sensor row driver (5) has: (a) a sensor drive mode in which a sensor drive signal of a first pattern is supplied, and a photosensor signal that corresponds to the amount of light received by the photosensor is output to a signal processing circuit (8), and (b) a correction data acquisition mode in which a sensor drive signal of a second pattern that is different from the first pattern is supplied, and a correction photosensor signal level that corresponds to the case where the photosensor detected a black level or a white level is acquired. The photosensor signal levels obtained in the two modes while the ambient environment is controlled to a predetermined condition are stored in a memory. The signal processing circuit (8) corrects the photosensor signal in the sensor drive mode using the correction photosensor signal level that was corrected using the data for resolving offset.

摘要翻译： 提供了一种在像素中具有光电检测元件并且可以在操作期间自动校正光电传感器信号，同时分辨相对于真黑电平或白电平的偏移误差的显示装置。 作为操作模式，传感器行驱动器（5）具有：（a）提供第一图案的传感器驱动信号的传感器驱动模式，并且输出与由光传感器接收的光量相对应的光传感器信号 信号处理电路（8），和（b）校正数据获取模式，其中提供与第一图案不同的第二图案的传感器驱动信号，以及校正光电传感器信号电平，对应于 光电传感器检测到黑电平或获取白电平。 在周围环境被控制到预定条件的情况下，在两种模式中获得的光传感器信号电平被存储在存储器中。 信号处理电路（8）使用使用用于解析偏移的数据进行校正的校正光电传感器信号电平来校正传感器驱动模式下的光传感器信号。

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：US08525953B2

公开(公告)日：2013-09-03

申请号：US13497383

申请日：2010-06-08

申请人： Hiromi Katoh ,  Yasuhiro Sugita ,  Kohhei Tanaka ,  Kaoru Yamamoto ,  Naru Usukura ,  Hiroaki Shigeta

发明人： Hiromi Katoh ,  Yasuhiro Sugita ,  Kohhei Tanaka ,  Kaoru Yamamoto ,  Naru Usukura ,  Hiroaki Shigeta

IPC分类号： G02F1/133

CPC分类号： G06F3/0412 ,  G06F3/0418 ,  G06F3/042 ,  G09G3/3406 ,  G09G2360/144 ,  G09G2360/148

摘要： A plurality of first and second sensor pixel circuits each sensing light during a designated sensing period and retaining the amount of sensed light otherwise are arranged in a pixel region. A backlight is turned on once for a predetermined time in one-frame period. A sensing period when the backlight is turned on and a sensing period when the backlight is turned off are set once, respectively, in the one-frame period. The first sensor pixel circuit is reset. The second sensor pixel circuit is reset. Read from sensor pixel circuits of two types is performed in parallel in a line sequential manner during a period other than the periods and. A difference circuit provided outside of the sensor pixel circuits is used for obtaining a difference between an amount of light when the backlight is turned on and an amount of light when the backlight is turned off.

摘要翻译： 多个第一和第二传感器像素电路在指定的检测周期期间感测光并保持感测光的量，否则布置在像素区域中。 背光源在一帧周期内打开一段预定时间。 在一帧期间分别设定背光源开启的感测期间和背光源关闭时的感测期间一次。 第一传感器像素电路被复位。 第二传感器像素电路被复位。 从周期和周期以外的期间以线顺序的方式并行地进行两种类型的传感器像素电路的读取。 设置在传感器像素电路外部的差分电路用于获得当背光打开时的光量与背光被关闭时的光量之间的差。

公开(公告)号：US20130057518A1

公开(公告)日：2013-03-07

申请号：US13698672

申请日：2011-05-19

申请人： Yasuhiro Sugita ,  Kohei Tanaka ,  Naru Usukura ,  Tadashi Nemoto ,  Hiromi Katoh

发明人： Yasuhiro Sugita ,  Kohei Tanaka ,  Naru Usukura ,  Tadashi Nemoto ,  Hiromi Katoh

IPC分类号： G06F3/042

CPC分类号： G06F3/0412 ,  G06F3/0418 ,  G06F3/042 ,  G09G3/3648 ,  G09G2360/144 ,  H01L27/14621 ,  H01L27/14645

摘要： Provided is a display device that has a photodetection element in a pixel and can automatically correct a photosensor signal during operation, while resolving offset error with respect to the true black level or white level. As operation modes, a sensor row driver (5) has: (a) a sensor drive mode in which a sensor drive signal of a first pattern is supplied, and a photosensor signal that corresponds to the amount of light received by the photosensor is output to a signal processing circuit (8), and (b) a correction data acquisition mode in which a sensor drive signal of a second pattern that is different from the first pattern is supplied, and a correction photosensor signal level that corresponds to the case where the photosensor detected a black level or a white level is acquired. The photosensor signal levels obtained in the two modes while the ambient environment is controlled to a predetermined condition are stored in a memory. The signal processing circuit (8) corrects the photosensor signal in the sensor drive mode using the correction photosensor signal level that was corrected using the data for resolving offset.

摘要翻译： 提供了一种在像素中具有光电检测元件并且可以在操作期间自动校正光电传感器信号，同时分辨相对于真黑电平或白电平的偏移误差的显示装置。 作为操作模式，传感器行驱动器（5）具有：（a）提供第一图案的传感器驱动信号的传感器驱动模式，并且输出与由光传感器接收的光量相对应的光传感器信号 信号处理电路（8），和（b）校正数据获取模式，其中提供与第一图案不同的第二图案的传感器驱动信号，以及校正光电传感器信号电平，对应于 光电传感器检测到黑电平或获取白电平。 在周围环境被控制到预定条件的情况下，在两种模式中获得的光传感器信号电平被存储在存储器中。 信号处理电路（8）使用使用用于解析偏移的数据进行校正的校正光电传感器信号电平来校正传感器驱动模式下的光传感器信号。

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：US20110267561A1

公开(公告)日：2011-11-03

申请号：US13143269

申请日：2010-01-22

申请人： Tadashi Nemoto ,  Naru Usukura ,  Hiromi Katoh ,  Hiroaki Shigeta ,  Ryuzo Yuki ,  Yuuichi Kanbayashi

发明人： Tadashi Nemoto ,  Naru Usukura ,  Hiromi Katoh ,  Hiroaki Shigeta ,  Ryuzo Yuki ,  Yuuichi Kanbayashi

IPC分类号： G02F1/1335

CPC分类号： G02F1/13338 ,  G02F1/13363 ,  G02F2001/133638 ,  G02F2413/02

摘要： A liquid crystal display device (display device) (100) of the present invention includes a display panel (20) provided with a plurality of light sensor elements, and has an area sensor function in which the plurality of light sensor elements detect an image on a surface of the liquid crystal display device, so as to determine a location of an input from outside. The liquid crystal display device includes (i) a front side polarizing plate (40) provided on or above a surface of the display panel (20) which surface is on an image display surface side and (ii) a λ/2 phase plate (50b) and a λ/4 phase plate (50a) which are stacked in this order on the front side polarizing plate (40) so that an optical axis (a slow axis) of the λ/2 phase plate (50b) and an optical axis (a slow axis) of the λ/4 phase plate (50a) intersect with each other. The phase plate formed by stacking the λ/2 phase plate (50b) and the λ/4 phase plate (50a) is referred to as a broadband λ/4 phase plate (50). This makes a light sensor equipped display device which (i) prevents a reflection of light coming from a display image and (ii) allows determination of an input location with higher accuracy.

摘要翻译： 本发明的液晶显示装置（显示装置）（100）具备：多个光传感器元件的显示面板（20），具有多个光传感器元件检测图像的区域传感器功能 液晶显示装置的表面，以便从外部确定输入的位置。 液晶显示装置包括：（i）设置在显示面板（20）的表面上或上方的前侧偏振片（40），其表面位于图像显示面侧，（ii）λ/ 2相位板 50b）和λ/ 4相位板（50a），它们依次叠置在前侧偏光板（40）上，使得λ/ 2相位板（50b）的光轴（慢轴）和光学 λ/ 4相位板（50a）的轴（慢轴）相交。 将λ/ 2相位板（50b）和λ/ 4相位板（50a）叠层而形成的相位板称为宽带λ/ 4相位板（50）。 这使得配备有光传感器的显示装置（i）防止来自显示图像的光的反射，以及（ii）允许以更高精度确定输入位置。

公开(公告)号：US20110199349A1

公开(公告)日：2011-08-18

申请号：US12673454

申请日：2008-08-05

申请人： Hiromi Katoh

发明人： Hiromi Katoh

IPC分类号： G06F3/038 ,  G01J1/46

CPC分类号： G01J1/46 ,  G01J1/1626 ,  G01J1/32 ,  G01J1/4204 ,  G01J1/4228 ,  G02F1/13318 ,  G02F2001/13312 ,  H01L27/14609

摘要： The present invention provides an optical sensor at least some part of which is formed monolithically in an active matrix substrate of a display device. In order to detect ambient light with high accuracy by eliminating the influences of stray light and of property variations between photodetecting elements, the optical sensor includes a detection photodiode (11) and a reference photodiode (12) covered with a shielding film (15). The optical sensor further includes a differential amplifier (16) one input terminal of which is connected to the cathode of the detection photodiode (11) and the other input terminal is connected to the cathode of the reference photodiode (12), an integration capacitor (19) and a reset switch (22). The optical sensor further includes a comparator (21) and a low-pass filter (20) for making the electric potentials of the anodes of the reference photodiode (12) and detection photodiode (11) larger than the electric potential of the cathode of the reference photodiode (12) by the open-circuit voltage VOC.

摘要翻译： 本发明提供了一种光学传感器，其至少一部分在显示装置的有源矩阵基板中整体地形成。 为了通过消除杂散光的影响和光检测元件之间的特性变化来高精度地检测环境光，光传感器包括检测光电二极管（11）和被屏蔽膜（15）覆盖的参考光电二极管（12）。 光传感器还包括差分放大器（16），其一个输入端连接到检测光电二极管（11）的阴极，另一个输入端连接到参考光电二极管（12）的阴极，积分电容器 19）和复位开关（22）。 光学传感器还包括比较器（21）和低通滤波器（20），用于使参考光电二极管（12）和检测光电二极管（11）的阳极的电位大于阴极的电位 参考光电二极管（12）通过开路电压VOC。