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：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：US20130063407A1

公开(公告)日：2013-03-14

申请号：US13698749

申请日：2011-05-12

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

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

IPC分类号： G06F3/038

CPC分类号： G06F3/0416 ,  G06F3/0412 ,  G06F3/042

摘要： Disclosed is a display device that can compensate for variations of light-detecting element while securing a wide dynamic range of light sensors. This is a display device equipped with light sensors having operation modes for one frame period, which are: a sensor driving mode for obtaining sensor signals, a first correction data acquisition mode for obtaining a first correction data, and a second correction data acquisition mode for obtaining a second correction data. This display device further includes a memory that stores light sensor signal levels obtained, under a controlled ambient environmental condition, by driving the light sensors in the above-mentioned three modes as offset elimination data. A signal-processing circuit uses the first correction data and the second correction data, and the light sensor signal level corrected with the offset elimination data to correct the light sensor signal obtained in the sensor driving mode.

摘要翻译： 公开了一种显示装置，其可以在确保宽动态范围的光传感器的同时补偿光检测元件的变化。 这是配备有具有一个帧周期的操作模式的光传感器的显示装置，它们是：用于获得传感器信号的传感器驱动模式，用于获得第一校正数据的第一校正数据获取模式和用于获取第一校正数据的第二校正数据获取模式 获得第二校正数据。 该显示装置还包括存储器，其存储在受控的环境环境条件下通过以上述三种模式驱动光传感器获得的光传感器信号电平作为偏移消除数据。 信号处理电路使用第一校正数据和第二校正数据，以及利用偏移消除数据校正的光传感器信号电平来校正在传感器驱动模式中获得的光传感器信号。

公开(公告)号：US20130063403A1

公开(公告)日：2013-03-14

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

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，其输出与在 当光源熄灭时的累积期间。 光传感器作为一帧周期的操作模式，具有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：US20120062817A1

公开(公告)日：2012-03-15

申请号：US13322137

申请日：2010-02-22

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

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

IPC分类号： G02F1/13357

CPC分类号： G06F3/0412 ,  G02F1/13338 ,  G02F2001/13312 ,  G06F3/042 ,  G06F2203/04103

摘要： A liquid crystal display device 100 according to the present invention is provided with a liquid crystal panel 20 in which a liquid crystal layer 23 is disposed between an active matrix substrate 21 and an opposite substrate 22 and a backlight 10 that irradiates the liquid crystal panel 20 with light. The liquid crystal panel 20 has a plurality of optical sensor elements 30 that detect the intensity of received infrared light, and the backlight 10 has an infrared LED (light source) 12 that emits infrared light. On a device surface 100a, an infrared light transmissive sheet (infrared light partially transmissive portion) 50 that partially transmits infrared light is provided. The optical sensor elements 30 detect an input position from outside by detecting infrared light reflected from an inputting object such as a finger or the like placed on the device surface 100a. This way, an optical sensor integrated liquid crystal display device that can clearly distinguish whether or not an inputting object such as a finger or the like is touching the device surface can be achieved.

摘要翻译： 根据本发明的液晶显示装置100具备液晶面板20，液晶面板20中，在有源矩阵基板21和相对基板22之间配置有液晶层23和照射液晶面板20的背光源10 用光。 液晶面板20具有检测接收到的红外光的强度的多个光学传感器元件30，背光源10具有发射红外光的红外LED（光源）12。 在器件表面100a上，设置有部分透射红外光的红外透光片（红外光部分透射部）50。 光传感器元件30通过检测从放置在装置表面100a上的诸如手指等的输入对象反射的红外光来检测来自外部的输入位置。 这样，可以实现能够清楚地识别手指等的输入对象是否正在接触设备表面的光学传感器集成液晶显示装置。

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：US20120176356A1

公开(公告)日：2012-07-12

申请号：US13497358

申请日：2010-06-08

申请人： Naru Usukura ,  Hiromi Katoh ,  Yasuhiro Sugita ,  Kohhei Tanaka ,  Kaoru Yamamoto ,  Christopher Brown

发明人： Naru Usukura ,  Hiromi Katoh ,  Yasuhiro Sugita ,  Kohhei Tanaka ,  Kaoru Yamamoto ,  Christopher Brown

IPC分类号： G09G5/00

CPC分类号： G06F3/042 ,  G06F3/0416 ,  G09G3/3406 ,  G09G2360/144

摘要： A plurality of sensor pixel circuits are disclosed for detecting a difference between an amount of light when a backlight is turned on and an amount of light when the backlight is turned off are arranged in a pixel region. The backlight is turned on and off a plurality of times, respectively, in a one-frame period. Each of reset for the sensor pixel circuits and read from the sensor pixel circuits is performed in parallel, each in a line sequential manner over almost the one-frame period. A plurality of sensor pixel circuits of two types for separately detecting an amount of light when the backlight is turned on and an amount of light when the backlight is turned off may be arranged in the pixel region, and a difference circuit may be used for obtaining a difference between the two types of amounts of light.

摘要翻译： 公开了多个传感器像素电路，用于检测当背光源导通时的光量与背光源被关闭时的光量之间的差异被布置在像素区域中。 背光源分别在一帧周期内分别打开和关闭多次。 传感器像素电路的复位和从传感器像素电路读取的每一个在几乎一个帧周期中并行执行，每个以一行的顺序方式执行。 可以在像素区域中配置多个用于分别检测背光源导通时的光量和背光源截止时的光量的两种传感器像素电路，差分电路可以用于获得 两种光量之间的区别。

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：US20120169962A1

公开(公告)日：2012-07-05

申请号：US13395388

申请日：2010-08-19

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

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

IPC分类号： G02F1/13357 ,  H01J9/26 ,  G02F1/1335

CPC分类号： G01J1/02 ,  G01J1/0204 ,  G01J1/0488 ,  G01J1/46 ,  G01J3/506 ,  G06F3/0412 ,  G06F3/042

摘要： In a liquid crystal display device, noise light to a photodetecting element is reduced, whereby an improved S/N ratio is achieved. The liquid crystal display device includes: a first substrate (100) on which a pixel circuit is provided; a second substrate (101) arranged so as to face the first substrate (100) with a liquid crystal layer (30) being interposed therebetween; a photodetecting element (17) provided on the first substrate (100); and a detection light filter (18) that is provided between the photodetecting element (17) and the liquid crystal layer (30) and that cuts off light in a band outside a signal light band that is a band of light to be detected by the photodetecting element (17).

摘要翻译： 在液晶显示装置中，对光检测元件的噪声光减少，从而实现了提高的S / N比。 液晶显示装置包括：设置有像素电路的第一基板（100） 第二基板（101），其间配置有与第一基板（100）相对的液晶层（30）; 设置在第一基板（100）上的光电检测元件（17）; 以及检测用滤光器（18），其设置在所述受光元件（17）和所述液晶层（30）之间，并且在所述光检测元件（17）和所述液晶层 光检测元件（17）。