公开(公告)号：US11069293B2

公开(公告)日：2021-07-20

申请号：US16048828

申请日：2018-07-30

Applicant: JOLED Inc.

Inventor： Hiroaki Ishii ,  Teppei Isobe

IPC: G09G3/3258 ,  G09G3/3233

Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array including pixels each including a current-driven self-luminescent element. The luminance controller performs, on the basis of an image signal, a dynamic control of a duty ratio of a voltage pulse and a potential difference between a first voltage and a second voltage. The first voltage is outputted from a first voltage source adjacent to an anode of the corresponding self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the corresponding self-luminescent element. The duty ratio is directed to controlling of light emission and light extinction of the self-luminescent element.

公开(公告)号：US10115346B2

公开(公告)日：2018-10-30

申请号：US15306658

申请日：2015-02-10

Applicant: JOLED INC.

Inventor： Koichi Maeyama ,  Teppei Isobe

IPC: G09G3/3291 ,  G09G3/3258 ,  G09G3/20 ,  G09G3/30 ,  H01L51/50

Abstract: A display device according to the disclosure includes: a display section having a plurality of unit pixels; and a driving section that, in a first drive mode, performs write driving and thereafter performs light emission driving in a plurality of light-emitting periods on each of the unit pixels. One of predetermined number of light-emitting periods out of the plurality of light-emitting periods other than a first light-emitting period is longer than the first light-emitting period, and another one of the predetermined number of light-emitting periods is shorter than the first light-emitting period.

公开(公告)号：US09406255B2

公开(公告)日：2016-08-02

申请号：US13740534

申请日：2013-01-14

Applicant: JOLED Inc.

Inventor： Teppei Isobe ,  Hiroshi Hasegawa ,  Hironobu Abe

IPC: G09G3/22 ,  G09G3/32 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/22 ,  G09G3/2022 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3648 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2320/0626 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/08 ,  G09G2320/103 ,  G09G2360/16

Abstract: Disclosed herein is a lighting period setting method for a display panel which permits control of the peak luminance level by controlling the total lighting period length which is the sum of all lighting periods per field period, the lighting period setting method including the steps of, calculating the average luminance level across the screen based on input image data, determining light emission mode based on the calculated average luminance level, and setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data.

公开(公告)号：US20190051234A1

公开(公告)日：2019-02-14

申请号：US16049010

申请日：2018-07-30

Applicant: JOLED Inc.

Inventor： Hiroaki Ishii ,  Teppei Isobe

IPC: G09G3/3208

Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array. The pixel array includes pixels each including a current-driven self-luminescent element. The luminescent controller sets, on the basis of an image signal corresponding to a frame image, a threshold that is directed to detection of a maximum signal level of the image signal, and performs dynamic control of a potential difference between a first voltage and a second voltage on the basis of the maximum signal level detected with reference to the set threshold. The first voltage is outputted from a first voltage source adjacent to an anode of the self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the self-luminescent element.

公开(公告)号：US09870738B2

公开(公告)日：2018-01-16

申请号：US14614981

申请日：2015-02-05

Applicant: JOLED Inc.

Inventor： Koichi Maeyama ,  Teppei Isobe

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2320/045 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2320/103

Abstract: A display device includes: a display section that has pixels; and a driving section that drives the display section on the basis of luminance information including a plurality of sub-luminance information pieces. The driving section drives the pixels in a time-division manner on the basis of each sub-luminance information piece during a single display period or a plurality of display periods which is set in each sub-luminance information piece. One or both of a timing of start of each display period and the number of the display periods are changeable.

公开(公告)号：US20190066593A1

公开(公告)日：2019-02-28

申请号：US16048828

申请日：2018-07-30

Applicant: JOLED Inc.

Inventor： Hiroaki Ishii ,  Teppei Isobe

IPC: G09G3/3258 ,  G09G3/3233

Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array including pixels each including a current-driven self-luminescent element. The luminance controller performs, on the basis of an image signal, a dynamic control of a duty ratio of a voltage pulse and a potential difference between a first voltage and a second voltage. The first voltage is outputted from a first voltage source adjacent to an anode of the corresponding self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the corresponding self-luminescent element. The duty ratio is directed to controlling of light emission and light extinction of the self-luminescent element.

公开(公告)号：US10997912B2

公开(公告)日：2021-05-04

申请号：US16423155

申请日：2019-05-28

Applicant: JOLED INC.

Inventor： Hiroaki Ishii ,  Atsushi Hyodo ,  Teppei Isobe

IPC: G09G3/3233 ,  G09G3/20

Abstract: A method of driving a display panel includes: correcting a gate-source voltage of a first transistor to cause the gate-source voltage of a first transistor to become closer to a threshold voltage of the first transistor; and writing a signal voltage into a gate of the first transistor by applying a plurality of voltage pulses to a gate of a second transistor. The correcting and the writing are performed in each of pixels of the display panel. The signal voltage corresponds to an image signal. The voltage pulses applied in the writing include a first voltage pulse and a second voltage pulse. The first voltage pulse is applied previous to the second voltage pulse. The second voltage pulse is applied subsequent to the first voltage pulse. A peak value of the first voltage pulse is higher than a peak value of the second voltage pulse.

公开(公告)号：US10896638B2

公开(公告)日：2021-01-19

申请号：US16049010

申请日：2018-07-30

Applicant: JOLED Inc.

Inventor： Hiroaki Ishii ,  Teppei Isobe

IPC: G09G3/3208

Abstract: A luminance controlling unit includes a luminance controller that controls luminance of a pixel array. The pixel array includes pixels each including a current-driven self-luminescent element. The luminescent controller sets, on the basis of an image signal corresponding to a frame image, a threshold that is directed to detection of a maximum signal level of the image signal, and performs dynamic control of a potential difference between a first voltage and a second voltage on the basis of the maximum signal level detected with reference to the set threshold. The first voltage is outputted from a first voltage source adjacent to an anode of the self-luminescent element, and the second voltage is outputted from a second voltage source adjacent to a cathode of the self-luminescent element.

公开(公告)号：US09299291B2

公开(公告)日：2016-03-29

申请号：US14541733

申请日：2014-11-14

Applicant: JOLED Inc.

Inventor： Koichi Maeyama ,  Teppei Isobe ,  Yohei Funatsu ,  Daisuke Miki

IPC: G09G5/02 ,  G09G3/32 ,  G09G3/36

CPC classification number: G09G3/3291 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/3688 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/046 ,  G09G2320/103 ,  G09G2340/06 ,  G09G2360/144 ,  G09G2360/16

Abstract: A display unit includes: a display section including a plurality of unit pixels; and a drive section configured to perform a first drive, a second drive, and a third drive on each of the unit pixels in this order, in which each of the first drive and the second drive includes an initialization drive, a writing drive of a pixel voltage, and a light emission drive based on the pixel voltage written by the writing drive, a part of a series of the initialization drive, the writing drive, and the light emission drive differs between the first drive and the second drive, and the third drive includes a light emission drive based on the pixel voltage written by the writing drive in the second drive.

Abstract translation: 显示单元包括：显示部分，包括多个单位像素; 以及驱动部，被配置为按照该顺序在每个单位像素上执行第一驱动器，第二驱动器和第三驱动器，其中第一驱动器和第二驱动器中的每一个包括初始化驱动器，写入驱动器 像素电压和基于由写入驱动器写入的像素电压的发光驱动，一系列初始化驱动，写入驱动和发光驱动的一部分在第一驱动和第二驱动之间不同，并且 第三驱动器包括基于由第二驱动器中的写入驱动器写入的像素电压的发光驱动。