公开(公告)号：US09524914B2

公开(公告)日：2016-12-20

申请号：US15027313

申请日：2014-05-07

Applicant: JOLED INC.

Inventor： Miki Fukushima ,  Kazushi Sugiyama ,  Toshiyuki Kato ,  Yasunori Negoro

IPC: H01L51/56 ,  H01L21/66 ,  H01L27/32 ,  H01L23/544 ,  G09G3/00

CPC classification number: H01L22/24 ,  G09G3/006 ,  G09G3/3225 ,  H01L23/544 ,  H01L27/3244 ,  H01L2223/54426 ,  H01L2227/323 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A method of manufacturing an organic EL display apparatus including an organic EL panel having light emitting pixels each of which has an organic EL element (OEL) includes: lighting up lighting target pixels set from among the light emitting pixels; causing an imaging device to photograph the organic EL panel and receiving a photographed image from the imaging device; detecting the lighting target pixels using the photographed image; determining whether an undetectable pixel that cannot be detected is included among the lighting target pixels, using a result obtained in the detecting; increasing an amount of luminescence of the undetectable pixel to a detectable amount of luminescence, when it is determined that the undetectable pixel is included; and aligning a relative position of the organic EL display apparatus and the imaging device, using the result obtained in the detecting.

Abstract translation: 一种制造有机EL显示装置的方法，所述有机EL显示装置包括具有各自具有有机EL元件（OEL）的发光像素的有机EL面板，包括：点亮从所述发光像素中设置的点亮目标像素; 使成像装置拍摄有机EL面板并从成像装置接收拍摄图像; 使用所拍摄的图像来检测照明目标像素; 使用在检测中获得的结果来确定在点亮目标像素中是否包括不可检测的不可检测的像素; 当确定包含不可检测的像素时，将不可检测像素的发光量增加到可检测量的发光; 以及使用检测中获得的结果对准有机EL显示装置和成像装置的相对位置。

公开(公告)号：US12223880B2

公开(公告)日：2025-02-11

申请号：US17966247

申请日：2022-10-14

Applicant: JOLED INC.

Inventor： Hiroaki Ishii ,  Toshiyuki Kato

IPC: G09G3/20 ,  G09G3/3233

Abstract: A control device is for use in a case where frame periods, each being a period in which one image continues to be displayed, vary in length within a given range or temporarily become stable in length on a frame-by-frame basis, and accurate lengths of the frame periods are not known beforehand. The control device changes a total number of subframe periods to reconfigure the frame period with n subframe periods, where n is an integer of two or more, regardless of the frame period input, and causes the display of the image. The control device includes a signal processor that outputs an output video signal according to a first input video signal on a subframe-period-by-subframe-period basis; and a controller that supplies the output video signal output from the signal processor and a control signal for controlling an operation of the display panel to the display panel.

公开(公告)号：US11893932B2

公开(公告)日：2024-02-06

申请号：US17999151

申请日：2021-05-17

Applicant: JOLED INC.

Inventor： Toshiyuki Kato

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2310/0286 ,  G09G2330/021

Abstract: A display apparatus includes a display panel including a plurality of pixels, and a current limiting circuit that limits current consumption in the plurality of pixels, the current limiting circuit includes a gain computation circuit that computes a screen power value in reference to a pixel value included in a video signal and that determines a gain in reference to the screen power value, and a gain multiplication circuit that multiplies the pixel value by the gain and that outputs a limit signal including the pixel value multiplied by the gain, the display panel includes a display unit, and a lighting control circuit that controls a lighting state of the plurality of pixels in reference to a predicted power value computed according to the limit signal, to reduce a power consumption value in the plurality of pixels to a value equal to or smaller than a control target power value, the gain is 1 when the screen power value is equal to or smaller than the control target power value, and the gain is a value equal to or smaller than a value obtained by dividing the control target power value by the screen power value, in other cases.

公开(公告)号：US10121411B2

公开(公告)日：2018-11-06

申请号：US14942054

申请日：2015-11-16

Applicant: JOLED INC.

Inventor： Toshiyuki Kato

IPC: G09G3/3225 ,  G09G3/20

Abstract: A display device includes pixel units, a source driver and a control unit. The source driver applies voltage corresponding to gray level values to data signal lines. Each of the pixel units includes a light-emitting element, a capacitance element and a driving transistor. The light-emitting element emits light according to a driving current. The capacitance element accumulates charge corresponding to a voltage at a connected data signal line. The driving transistor supplies the driving current corresponding to the accumulated charge to the light-emitting element. The control unit decreases voltage(s) to be outputted from the source driver, when an appearance frequency of display pixels having a low gray-level value is lower than a first reference frequency, or when an appearance frequency of display pixels having a high gray-level value is lower than a second reference frequency.

公开(公告)号：US09894313B1

公开(公告)日：2018-02-13

申请号：US15658631

申请日：2017-07-25

Applicant: JOLED INC.

Inventor： Toshiyuki Kato

IPC: H04N5/57 ,  G06T7/00

CPC classification number: H04N5/57 ,  G06T7/97 ,  G06T2207/10016 ,  G06T2207/20021

Abstract: A video signal processing method includes: dividing a current frame which is to be processed into a plurality of blocks which are predetermined rectangular blocks; calculating, for each of the plurality of blocks divided into in the dividing, a feature quantity relating to luminance of pixels in the block; calculating first correction data, based on a feature quantity calculated from each of first blocks located above a first horizontal boundary in the current frame and a feature quantity calculated from each of one or more blocks located below a first horizontal boundary in a previous frame which has been processed immediately before the current frame; and correcting luminance of pixels in each of the first blocks in the current frame, based on the first correction data calculated in the calculating.