公开(公告)号：US20110221708A1

公开(公告)日：2011-09-15

申请号：US13130002

申请日：2009-07-30

申请人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

发明人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

IPC分类号： G06F3/042

CPC分类号： G09G3/3648 ,  G02F1/136213 ,  G02F2001/13312

摘要： A display device according to the present invention includes a liquid crystal display panel in which a plurality of pixels are arranged in matrix, and an optical sensor circuit configured by a photodiode (17), a NetA voltage-boosting capacitor, and an output AMP. A driving wiring (Vrwn) for supplying a driving signal to the NetA voltage-boosting capacitor is electrically connected to a power supply wiring (Vsm) for supplying power to the output AMP. This configuration reduces parasitic capacitance resulting from an increase in the number of wirings. This makes it possible to make a display device having a pixel including an optical sensor incorporated therein, the display device capable of avoiding deterioration in sensor accuracy in the optical sensor circuit and preventing a decrease in the aperture ratio of the pixel.

摘要翻译： 根据本发明的显示装置包括其中多个像素被排列成矩阵的液晶显示面板和由光电二极管（17），NetA升压电容器和输出AMP构成的光学传感器电路。 用于向NetA升压电容器提供驱动信号的驱动布线（Vrwn）电连接到用于向输出AMP供电的电源布线（Vsm）。 该配置减少了由于布线数量的增加而引起的寄生电容。 这使得可以制造具有包括其中的光学传感器的像素的显示装置，该显示装置能够避免光学传感器电路中的传感器精度的劣化，并且防止像素的开口率的降低。

公开(公告)号：US20110090193A1

公开(公告)日：2011-04-21

申请号：US12737185

申请日：2009-04-30

申请人： Hajime Imai ,  Hideki Kitagawa ,  Shinya Tanaka

发明人： Hajime Imai ,  Hideki Kitagawa ,  Shinya Tanaka

IPC分类号： G09G5/00

CPC分类号： G06F3/0412 ,  G01J1/46 ,  G02F1/13318 ,  G02F1/13338 ,  G09G3/3648 ,  G09G2300/0417 ,  G09G2300/0876

摘要： A matrix type display device including: a photosensor, provided in a display region, for outputting a signal corresponding to an intensity of light emitted to the photosensor; a TFT of n-channel type, the TFT serving as a source follower including a gate to which the signal is inputted; and light intensity detecting means for detecting the intensity of the light by detecting an output of the source follower, which is the TFT. In at least one embodiment, the TFT includes a drain to which a first pulse signal (Vpulse2) having a first pulse is inputted, the first pulse rising from a low level to a high level in a state where the signal is inputted to the gate of the TFT.

摘要翻译： 一种矩阵式显示装置，包括：光电传感器，设置在显示区域中，用于输出对应于发射到光电传感器的光的强度的信号; 作为n沟道型的TFT，作为源极跟随器的TFT包括输入信号的栅极; 以及光强度检测装置，用于通过检测作为TFT的源极跟随器的输出来检测光的强度。 在至少一个实施例中，TFT包括输入具有第一脉冲的第一脉冲信号（Vpulse2）的漏极，在信号输入到门的状态下，第一脉冲从低电平上升到高电平 的TFT。

公开(公告)号：US08531434B2

公开(公告)日：2013-09-10

申请号：US13130002

申请日：2009-07-30

申请人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

发明人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

IPC分类号： G06F3/042

CPC分类号： G09G3/3648 ,  G02F1/136213 ,  G02F2001/13312

摘要： A display device according to the present invention includes a liquid crystal display panel in which a plurality of pixels are arranged in matrix, and an optical sensor circuit configured by a photodiode (17), a NetA voltage-boosting capacitor, and an output AMP. A driving wiring (Vrwn) for supplying a driving signal to the NetA voltage-boosting capacitor is electrically connected to a power supply wiring (Vsm) for supplying power to the output AMP. This configuration reduces parasitic capacitance resulting from an increase in the number of wirings. This makes it possible to make a display device having a pixel including an optical sensor incorporated therein, the display device capable of avoiding deterioration in sensor accuracy in the optical sensor circuit and preventing a decrease in the aperture ratio of the pixel.

摘要翻译： 根据本发明的显示装置包括其中多个像素被排列成矩阵的液晶显示面板和由光电二极管（17），NetA升压电容器和输出AMP构成的光学传感器电路。 用于向NetA升压电容器提供驱动信号的驱动布线（Vrwn）电连接到用于向输出AMP供电的电源布线（Vsm）。 该配置减少了由于布线数量的增加而引起的寄生电容。 这使得可以制造具有包括其中的光学传感器的像素的显示装置，该显示装置能够避免光学传感器电路中的传感器精度的劣化，并且防止像素的开口率的降低。

公开(公告)号：US20120092302A1

公开(公告)日：2012-04-19

申请号：US13379783

申请日：2010-02-26

申请人： Hajime Imai ,  Takuya Watanabe ,  Atsuhito Murai ,  Hideki Kitagawa

发明人： Hajime Imai ,  Takuya Watanabe ,  Atsuhito Murai ,  Hideki Kitagawa

IPC分类号： G06F3/042

CPC分类号： H01L27/1214 ,  G02F1/13318 ,  G06F3/0412 ,  G06F3/042 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2360/14 ,  H01L27/12 ,  H01L27/3269 ,  H01L31/03682 ,  H01L31/03762 ,  H01L31/1136 ,  Y02E10/546 ,  Y02E10/548

摘要： It is an object of the present invention to provide a display device equipped with a display panel that is provided with a photo-detection section with improved accuracy of detecting a touch position. A display panel (11) of an organic EL display device (10) includes a photo-detection section (40) that detects reflected light when a screen is touched by a finger or the like. The photo-detection section (40) includes a photodiode (41) that receives the reflected light, and an output amplifier (42) that outputs an output voltage corresponding to the amount of the received light. If an a-Si diode is used for such a photodiode (41), a sufficiently large signal difference in sensitivity between the bright state and the dark state can be achieved. Also, if a p-Si amplifier is used for the output amplifier (42), the output voltage becomes the saturation voltage at the time of read-out. This allows the p-Si amplifier to directly output the large sensitivity difference detected by the a-Si diode as a large difference in the output voltage.

摘要翻译： 本发明的目的是提供一种配备有显示面板的显示装置，该显示面板具有提高检测触摸位置的精度的光检测部。 有机EL显示装置（10）的显示面板（11）具有检测手指等触摸屏幕时的反射光的光检测部（40）。 光检测部分（40）包括接收反射光的光电二极管（41）和输出与接收光量对应的输出电压的输出放大器（42）。 如果对这种光电二极管（41）使用a-Si二极管，则可以实现明亮状态和暗态之间的足够大的灵敏度信号差。 此外，如果使用p-Si放大器作为输出放大器（42），则输出电压成为读出时的饱和电压。 这允许p-Si放大器直接输出由a-Si二极管检测的大的灵敏度差，作为输出电压的大差异。

公开(公告)号：US08098345B2

公开(公告)日：2012-01-17

申请号：US13130244

申请日：2009-07-30

申请人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

发明人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

IPC分类号： G02F1/136

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

摘要： A liquid crystal display device of the present invention includes a two-dimensional sensor array in which optical sensor circuits are two-dimensionally positioned. The respective optical sensor circuits are provided with a photodiode (17), an output AMP and a NetA voltage raising capacitor. The output AMP has a gate electrode, a source electrode and a drain electrode. The gate electrode, the source electrode and the drain electrode are connected to a cathode electrode (NetA) of the photodiode (17), a voltage supply wiring (Vsm) and an optical sensor output wiring (Vom), respectively. The NetA voltage raising capacitor has two electrodes. One of the two electrodes is electrically connected to the NetA, and the other of the two electrodes is electrically connected to a drive wiring (Vrwn) for supplying a drive signal to the NetA voltage raising capacitor. A storage capacitor wiring (Csn) for retaining a pixel potential also serves as the drive wiring (Vrwn). It is accordingly possible to attain a liquid crystal display device including the optical sensor circuits in which deterioration in aperture ratio of a pixel and increase in frame region surrounding a display section are suppressed.

摘要翻译： 本发明的液晶显示装置包括二维传感器阵列，其中光学传感器电路是二维定位的。 各光传感器电路设置有光电二极管（17），输出AMP和NetA升压电容器。 输出AMP具有栅电极，源电极和漏电极。 栅电极，源电极和漏电极分别与光电二极管（17）的阴极（NetA），电压供给布线（Vsm）和光传感器输出布线（Vom）连接。 NetA升压电容器有两个电极。 两个电极中的一个电连接到NetA，并且两个电极中的另一个电连接到用于向NetA升压电容器提供驱动信号的驱动布线（Vrwn）。 用于保持像素电位的保持电容布线（Csn）也用作驱动布线（Vrwn）。 因此，可以获得包括像素的开口率的劣化和显示部分周围的框架区域的增加被抑制的光学传感器电路的液晶显示装置。

公开(公告)号：US20110221738A1

公开(公告)日：2011-09-15

申请号：US13130244

申请日：2009-07-30

申请人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

发明人： Atsuhito Murai ,  Hajime Imai ,  Hideki Kitagawa

IPC分类号： G09G5/00

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

摘要： A liquid crystal display device of the present invention includes a two-dimensional sensor array in which optical sensor circuits are two-dimensionally positioned. The respective optical sensor circuits are provided with a photodiode (17), an output AMP and a NetA voltage raising capacitor. The output AMP has a gate electrode, a source electrode and a drain electrode. The gate electrode, the source electrode and the drain electrode are connected to a cathode electrode (NetA) of the photodiode (17), a voltage supply wiring (Vsm) and an optical sensor output wiring (Vom), respectively. The NetA voltage raising capacitor has two electrodes. One of the two electrodes is electrically connected to the NetA, and the other of the two electrodes is electrically connected to a drive wiring (Vrwn) for supplying a drive signal to the NetA voltage raising capacitor. A storage capacitor wiring (Csn) for retaining a pixel potential also serves as the drive wiring (Vrwn). It is accordingly possible to attain a liquid crystal display device including the optical sensor circuits in which deterioration in aperture ratio of a pixel and increase in frame region surrounding a display section are suppressed.

摘要翻译： 本发明的液晶显示装置包括二维传感器阵列，其中光学传感器电路是二维定位的。 各光传感器电路设置有光电二极管（17），输出AMP和NetA升压电容器。 输出AMP具有栅电极，源电极和漏电极。 栅电极，源电极和漏电极分别与光电二极管（17）的阴极（NetA），电压供给布线（Vsm）和光传感器输出布线（Vom）连接。 NetA升压电容器有两个电极。 两个电极中的一个电连接到NetA，并且两个电极中的另一个电连接到用于向NetA升压电容器提供驱动信号的驱动布线（Vrwn）。 用于保持像素电位的保持电容布线（Csn）也用作驱动布线（Vrwn）。 因此，可以获得包括像素的开口率的劣化和显示部分周围的框架区域的增加被抑制的光学传感器电路的液晶显示装置。

公开(公告)号：US08749528B2

公开(公告)日：2014-06-10

申请号：US13379783

申请日：2010-02-26

申请人： Hajime Imai ,  Takuya Watanabe ,  Atsuhito Murai ,  Hideki Kitagawa

发明人： Hajime Imai ,  Takuya Watanabe ,  Atsuhito Murai ,  Hideki Kitagawa

IPC分类号： G06F3/042

CPC分类号： H01L27/1214 ,  G02F1/13318 ,  G06F3/0412 ,  G06F3/042 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2360/14 ,  H01L27/12 ,  H01L27/3269 ,  H01L31/03682 ,  H01L31/03762 ,  H01L31/1136 ,  Y02E10/546 ,  Y02E10/548

摘要： A display panel of an organic EL display device includes a photo-detection section that detects reflected light when a screen is touched by a finger or the like. The photo-detection section includes a photodiode that receives the reflected light, and an output amplifier that outputs an output voltage corresponding to the amount of the received light. If an a-Si diode is used for such a photodiode, a sufficiently large signal difference between the bright state and the dark state can be achieved. Also, if a p-Si amplifier is used for the output amplifier, the output voltage becomes the saturation voltage at the time of read-out. This allows the p-Si amplifier to directly output the large difference detected by the a-Si diode as a large difference in the output voltage.

摘要翻译： 有机EL显示装置的显示面板包括：光检测部，其通过手指等触摸屏幕时检测反射光。 光检测部分包括接收反射光的光电二极管和输出与接收光量对应的输出电压的输出放大器。 如果对这种光电二极管使用a-Si二极管，则可以实现明亮状态和黑暗状态之间足够大的信号差。 另外，如果使用p-Si放大器作为输出放大器，则输出电压成为读出时的饱和电压。 这允许p-Si放大器直接输出由a-Si二极管检测的大的差异作为输出电压的大差异。

公开(公告)号：US08446404B2

公开(公告)日：2013-05-21

申请号：US13133536

申请日：2009-08-12

申请人： Hideki Kitagawa ,  Hajime Imai ,  Atsuhito Murai

发明人： Hideki Kitagawa ,  Hajime Imai ,  Atsuhito Murai

IPC分类号： G06F3/038 ,  G09G5/00

CPC分类号： H01L31/101 ,  G02F1/1362 ,  G02F2001/13312 ,  G06F3/0412 ,  G06F3/044 ,  H01L27/12

摘要： A display apparatus of the present invention includes display sections (100) and sensor circuit sections (200). A driver line RW for supplying power to a charge storage element (202) in the sensor circuit section (200) is provided so as to overlap, via an interlayer insulating film, a gate line G connected with a gate electrode (102) of a display-drive TFT element (101) in the display section (100). This makes it possible to realize a display apparatus having pixels in which optical sensors are provided which display apparatus makes it possible to suppress a decrease in aperture ratio which is caused by the provision of the sensor circuit sections, and reduce a parasitic capacitance between lines so as to increase a sensitivity of the optical sensors.

摘要翻译： 本发明的显示装置包括显示部分（100）和传感器电路部分（200）。 提供用于向传感器电路部分（200）中的电荷存储元件（202）供电的驱动器线RW，以便经由层间绝缘膜与与栅极电极（102）连接的栅极线G重叠 显示驱动TFT元件（101）。 这使得可以实现具有其中提供光学传感器的像素的显示装置，显示装置可以抑制由提供传感器电路部分引起的开口率的降低，并且减少线之间的寄生电容，因此 以提高光学传感器的灵敏度。

公开(公告)号：US20120037905A1

公开(公告)日：2012-02-16

申请号：US13265766

申请日：2009-11-20

申请人： Atsuhito Murai ,  Yoshiharu Kataoka ,  Takuya Watanabe ,  Hajime Imai ,  Hideki Kitagawa

发明人： Atsuhito Murai ,  Yoshiharu Kataoka ,  Takuya Watanabe ,  Hajime Imai ,  Hideki Kitagawa

IPC分类号： H01L31/153

CPC分类号： H01L31/101 ,  G02F1/13318 ,  G02F1/1362 ,  G02F2201/58 ,  G06F3/0412

摘要： A display device of the present invention includes a display panel (101) including a photodiode (17), which generates a current having a magnitude corresponding to an intensity of light incident on the photoelectric conversion element; and, a backlight (108) for irradiating light from behind the photodiode (17) to beyond a front surface of the display panel (101), wherein: the photodiode (17) includes an activating layer made of hydrogenated a-Si; the light source (108) has a peak wavelength within a range from 780 nm or more to 830 nm or less; and the display device further includes a light blocking member (15) for blocking light having a wavelength less than 780 nm, the light blocking member (15) being provided between a front surface of the display panel (101) and the photodiode (17) and over the photodiode (17). With this, the present invention can perform a stable sensing operation under various environments because the display device is configured to reduce the outside-light-caused noise to the optical sensor and the display device is therefore less susceptible to environment surrounding the display device (outside light intensity etc.).A display device of the present invention includes a display panel (101) including a photodiode (17), which generates a current having a magnitude corresponding to an intensity of light incident on the photoelectric conversion element; and, a backlight (108) for irradiating light from behind the photodiode (17) to beyond a front surface of the display panel (101), wherein: the photodiode (17) includes an activating layer made of hydrogenated a-Si; the light source (108) has a peak wavelength within a range from 780 nm or more to 830 nm or less; and the display device further includes a light blocking member (15) for blocking light having a wavelength less than 780 nm, the light blocking member (15) being provided between a front surface of the display panel (101) and the photodiode (17) and over the photodiode (17). With this, the present invention can perform a stable sensing operation under various environments because the display device is configured to reduce the outside-light-caused noise to the optical sensor and the display device is therefore less susceptible to environment surrounding the display device (outside light intensity etc.).

公开(公告)号：US20120013595A1

公开(公告)日：2012-01-19

申请号：US13259024

申请日：2009-10-27

申请人： Atsuhito Murai ,  Yoshiharu Kataoka ,  Takuya Watanabe ,  Hajime Imai ,  Hideki Kitagawa

发明人： Atsuhito Murai ,  Yoshiharu Kataoka ,  Takuya Watanabe ,  Hajime Imai ,  Hideki Kitagawa

IPC分类号： G09G5/00 ,  G09G3/36

CPC分类号： G06F3/044 ,  G02F1/13338 ,  G02F2001/13312 ,  G06F3/0412 ,  G06F3/042 ,  G06F2203/04106 ,  G09G3/3648 ,  H01L31/02019 ,  H03F3/08

摘要： A display device includes, in a display region, a first circuit including a photodiode (62b), a first capacitor (62c), a second capacitor (62d), and an output amplifier (62a). A cathode of the photodiode (62b), one end of the first capacitor (62c), one end of the second capacitor (62d), and an input of the output amplifier (62a) are connected with one another via a first node (netA). An electrode at the other end of the second capacitor (62d) is provided on a substrate having a display surface of a display panel, and an electrode at the one end of the second capacitor (62d) is positioned to be away from the display surface in a thickness direction of the display panel in such a manner as to face the electrode at the other end of the second capacitor (62d).

摘要翻译： 显示装置在显示区域包括包括光电二极管（62b），第一电容器（62c），第二电容器（62d）和输出放大器（62a）的第一电路。 光电二极管（62b）的阴极，第一电容器（62c）的一端，第二电容器（62d）的一端和输出放大器（62a）的输入端经由第一节点（netA ）。 第二电容器（62d）的另一端的电极设置在具有显示面板的显示面的基板上，第二电容器（62d）的一端的电极位于显示面 在所述显示面板的厚度方向上以与所述第二电容器（62d）的另一端的电极相对的方式。