公开(公告)号：US20150301689A1

公开(公告)日：2015-10-22

申请号：US14705664

申请日：2015-05-06

Applicant: Japan Display Inc.

Inventor： Tsutomu Harada ,  Yoshiharu Nakajima ,  Michiru Senda ,  Kazunori Yamaguchi ,  Mitsuru Tateuchi ,  Ryoichi Tsuzaki ,  Toshikazu Maekawa

IPC: G06F3/042 ,  G09G3/34 ,  H04N5/378 ,  G06F3/041

CPC classification number: G06F3/0421 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/042 ,  G06F3/04883 ,  G06F2203/04101 ,  G09G3/3406 ,  G09G2354/00 ,  G09G2360/142 ,  H04N5/378

Abstract: An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight is emitted to a proximity object from an I/O display panel, an electric charge is accumulated in image pickup pixels in accordance with total light amount, including reflected light originating from the backlight and external environment light. Moreover, when the illumination light is not emitted, a discharging electric charge is released from the image pickup pixels in accordance with the amount of environment light. Thereby, an environment light component is subtracted from an image pickup signal obtained from each of the image pickup pixels, so object information about the proximity object is obtained without influence of the environment light. Moreover, in a light reception drive circuit, fewer frame memories for producing a picked-up image from the image pickup signal are necessary.

Abstract translation: 提供能够在不影响使用条件的同时稳定地检测物体的同时降低制造成本的图像拾取装置。 当来自背光源的照明光从I / O显示面板发射到接近物体时，根据包括来自背光的反射光和外部环境光的总光量积累在摄像像素中的电荷。 此外，当不发出照明光时，根据环境光的量，从摄像像素中释放放电电荷。 因此，从从每个摄像像素获得的摄像信号中减去环境光分量，从而获得关于邻近物体的对象信息而不受环境光的影响。 此外，在光接收驱动电路中，需要较少的用于从摄像信号产生拾取图像的帧存储器。

公开(公告)号：US09405406B2

公开(公告)日：2016-08-02

申请号：US14705664

申请日：2015-05-06

Applicant: Japan Display Inc.

Inventor： Tsutomu Harada ,  Yoshiharu Nakajima ,  Michiru Senda ,  Kazunori Yamaguchi ,  Mitsuru Tateuchi ,  Ryoichi Tsuzaki ,  Toshikazu Maekawa

IPC: G06F3/042 ,  G06F3/041 ,  G06F3/0488 ,  G09G3/34 ,  H04N5/378

CPC classification number: G06F3/0421 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/042 ,  G06F3/04883 ,  G06F2203/04101 ,  G09G3/3406 ,  G09G2354/00 ,  G09G2360/142 ,  H04N5/378

Abstract: An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight is emitted to a proximity object from an I/O display panel, an electric charge is accumulated in image pickup pixels in accordance with total light amount, including reflected light originating from the backlight and external environment light. Moreover, when the illumination light is not emitted, a discharging electric charge is released from the image pickup pixels in accordance with the amount of environment light. Thereby, an environment light component is subtracted from an image pickup signal obtained from each of the image pickup pixels, so object information about the proximity object is obtained without influence of the environment light. Moreover, in a light reception drive circuit, fewer frame memories for producing a picked-up image from the image pickup signal are necessary.

Abstract translation: 提供能够在不影响使用条件的同时稳定地检测物体的同时降低制造成本的图像拾取装置。 当来自背光源的照明光从I / O显示面板发射到接近物体时，根据包含来自背光和外部环境光的反射光的总光量积累摄像像素中的电荷。 此外，当不发出照明光时，根据环境光的量，从摄像像素中释放放电电荷。 因此，从从每个摄像像素获得的摄像信号中减去环境光分量，从而获得关于邻近物体的对象信息而不受环境光的影响。 此外，在光接收驱动电路中，需要较少的用于从摄像信号产生拾取图像的帧存储器。