公开(公告)号：US12223763B2

公开(公告)日：2025-02-11

申请号：US18225838

申请日：2023-07-25

Applicant: Japan Display Inc.

Inventor： Gen Koide ,  Keiichi Saito ,  Takashi Nakamura

IPC: G06V40/13 ,  G06V10/147 ,  G06V40/10 ,  G06V40/145

Abstract: According to an aspect, a detection device including a plurality of optical sensors arranged in a matrix having a row-column configuration, the detection device being configured to: detect a signal that is output from each of the optical sensors by reverse-biasing the optical sensor, and perform a refreshing operation to restore characteristics of the optical sensor to an initial state by forward-biasing the optical sensor for each predetermined period.

公开(公告)号：US10475367B2

公开(公告)日：2019-11-12

申请号：US16117206

申请日：2018-08-30

Applicant: Japan Display Inc.

Inventor： Keiichi Saito

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3291 ,  G09G3/3266 ,  G09G3/20

Abstract: A display device includes an electroluminescent panel including first light-emitting elements to emit red (first color), second light-emitting elements to emit green (second color), and third light-emitting elements to emit blue (third color); an image analyzer that obtains, in displaying of a received video signal, first power serving as a total of power required for displaying red (first color), power required for displaying green (second color), and power required for displaying blue (third color), and that calculates second power by multiplying the first power by a predetermined coefficient according to the video signal, and calculates threshold power by multiplying, by the coefficient, maximum allowable power that is allowed when the electroluminescent panel performs image display; and a luminance adjuster that multiplies the video signal by a ratio between the threshold power and the second power when the second power is equal to or greater than the threshold power.

公开(公告)号：US10304384B2

公开(公告)日：2019-05-28

申请号：US15800899

申请日：2017-11-01

Applicant: Japan Display Inc.

Inventor： Keiichi Saito

IPC: G09G3/3233 ,  G09G3/20

Abstract: According to an aspect, a display apparatus includes a plurality of pixels including light-emitting elements, a video signal driver that applies a video voltage or an initialization voltage to the pixels based on a video signal, a scan signal driver that applies a scan voltage to the pixels based on the video signal, and a controller that controls an initialization period in which the initialization voltage is applied to the pixels and a video voltage writing period in which the video voltage is applied to the pixels, in accordance with the tone of the video signal.

公开(公告)号：US09285911B2

公开(公告)日：2016-03-15

申请号：US14152143

申请日：2014-01-10

Applicant: Japan Display Inc.

Inventor： Keiichi Saito ,  Hideyuki Takahashi ,  Takashi Nakamura ,  Satoru Tomita ,  Masahiro Tada ,  Hirotaka Hayashi ,  Takashi Okada ,  Yoshiro Aoki ,  Takanori Tsunashima

IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044

Abstract: According to one embodiment, a display device includes a display pixel allocated at a matrix state in a display area, an image-reading device which detects strength of capacitive coupling by a dielectric material coming close to or making contact with the display area, and a control portion which controls each transistor of the image-reading device. The image-reading device includes a detection electrode which forms capacitance between the detection electrode and the dielectric material, a pre-charge gate line, a coupling pulse line, a readout gate line, a pre-charge line and a readout line. These lines supply a signal which drives the image-reading device. The image-reading device further includes a pre-charge transistor, an amplification transistor, a readout transistor, a compensation transistor, and a power-source switching transistor.

公开(公告)号：US12237346B2

公开(公告)日：2025-02-25

申请号：US18225809

申请日：2023-07-25

Applicant: Japan Display Inc. ,  The University of Tokyo

Inventor： Keiichi Saito ,  Takashi Nakamura ,  Gen Koide ,  Takao Someya ,  Tomoyuki Yokota

IPC: H01L27/144 ,  H01L31/101

Abstract: According to an aspect, a detection device includes a plurality of optical sensors arranged on a substrate. Each of the optical sensors includes a first photodiode and a second photodiode that is coupled in series and in an opposite direction to the first photodiode.

公开(公告)号：US09335856B2

公开(公告)日：2016-05-10

申请号：US14152143

申请日：2014-01-10

Applicant: Japan Display Inc.

Inventor： Keiichi Saito ,  Hideyuki Takahashi ,  Takashi Nakamura ,  Satoru Tomita ,  Masahiro Tada ,  Hirotaka Hayashi ,  Takashi Okada ,  Yoshiro Aoki ,  Takanori Tsunashima

IPC: G06F3/045 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: According to one embodiment, a display device includes a display pixel allocated at a matrix state in a display area, an image-reading device which detects strength of capacitive coupling by a dielectric material coming close to or making contact with the display area, and a control portion which controls each transistor of the image-reading device. The image-reading device includes a detection electrode which forms capacitance between the detection electrode and the dielectric material, a pre-charge gate line, a coupling pulse line, a readout gate line, a pre-charge line and a readout line. These lines supply a signal which drives the image-reading device. The image-reading device further includes a pre-charge transistor, an amplification transistor, a readout transistor, a compensation transistor, and a power-source switching transistor.

Abstract translation: 根据一个实施例，显示装置包括在显示区域中以矩阵状态分配的显示像素，图像读取装置，其通过接近或与显示区域接触的电介质材料来检测电容耦合的强度，以及 控制部分，其控制图像读取装置的每个晶体管。 图像读取装置包括在检测电极和电介质材料之间形成电容的检测电极，预充电栅极线，耦合脉冲线，读出栅极线，预充电线和读出线。 这些线路提供驱动图像读取装置的信号。 图像读取装置还包括预充电晶体管，放大晶体管，读出晶体管，补偿晶体管和电源开关晶体管。