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1. WO2020111037 - DISPLAY DEVICE

Publication Number WO/2020/111037
Publication Date 04.06.2020
International Application No. PCT/JP2019/046084
International Filing Date 26.11.2019
IPC
H05B 45/00 2020.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
G02B 27/01 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
01Head-up displays
G09G 3/20 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/34 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
CPC
G02B 27/01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
01Head-up displays
G09G 3/20
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
G09G 3/34
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
H05B 45/00
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
Applicants
  • 日本精機株式会社 NIPPON SEIKI CO.,LTD. [JP]/[JP]
Inventors
  • 土田 清 TSUCHIDA Kiyoshi
  • 山川 泰弘 YAMAKAWA Yasuhiro
  • 白木 慎也 SHIRAKI Shinya
Priority Data
2018-22407929.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISPLAY DEVICE
(FR) DISPOSITIF D'AFFICHAGE
(JA) 表示装置
Abstract
(EN)
The present invention provides a display device capable of suppressing occurrence of an overshoot. This HUD device is provided with: a constant current supply unit 300; a plurality of light sources that receive a current from the constant current supply unit 300 and emit light; a light source control unit 201 that causes any one of the plurality of light sources to emit light by supplying, as a pulsed wave or a rectangular wave, the current from the constant current supply unit 300 to the any one light source, and generates illumination light of a desired color from light generated from the plurality of light sources by a field sequential system in which the light source that emits light is sequentially switched; a capacitor C1 that is connected in parallel to the light source between the constant current supply unit 300 and a ground; and a switch part Swc that is connected in series with the capacitor C1. The light source control unit 201 brings the switch part Swc into an on state when supplying, as the pulsed wave, the current from the constant current supply unit 300 to the light source, and brings the switch part Swc into an off state when supplying, as the rectangular wave, the current from the constant current supply unit 300 to the light source.
(FR)
L'invention concerne un dispositif d'affichage permettant de limiter la génération de dépassements. Plus spécifiquement, ce dispositif d'affichage HUD comporte: une unité (300) d'alimentation en courant constant; plusieurs sources lumineuses qui reçoivent le courant de l'unité (300) d'alimentation en courant constant et génèrent de la lumière; une unité (201) de commande des sources lumineuses, laquelle, en fournissant à l'une des sources lumineuses le courant de l'unité (300) d'alimentation en courant constant sous forme d'ondes pulsées ou d'ondes rectangulaires, fait produire de la lumière à l'une des sources lumineuses, et laquelle génère une lumière d'éclairage d'une couleur voulue à partir de la lumière des sources lumineuses selon un système de séquence de champs pour commuter en ordre séquentiel les sources lumineuses émettant de la lumière; un condensateur (C1) situé entre le l'unité (300) d'alimentation en courant constant et la terre et lequel est connecté en série aux sources lumineuses; et une unité de commutation (Swc) connectée en série au condensateur (C1). L'unité (201) de commande des sources lumineuses met l'unité de commutation (Swc) à l'état marche lorsque le courant provenant de l'unité (300) d'alimentation en courant constant est amené à une source lumineuse sous forme d'ondes pulsées, et met l'unité de commutation (Swc) à l'état arrêt lorsque le courant provenant de l'unité (300) d'alimentation en courant constant est amené à une source lumineuse sous forme d'ondes rectangulaires.
(JA)
オーバーシュートの発生を抑制することができる表示装置を提供する。 HUD装置は、定電流供給部300と、定電流供給部300からの電流を受けて光を発する複数の光源と、複数の光源のうち何れか一つに定電流供給部300からの電流をパルス波又は矩形波として供給することで何れか一つの光源を発光させ、発光する光源を順次切り替えるフィールドシーケンシャル方式にて複数の光源から発される光から所望の色の照明光を生成する光源制御部201と、定電流供給部300とグランドの間であって光源に並列に接続されるコンデンサC1と、コンデンサC1に直列に接続されるスイッチ部Swcと、を備える。光源制御部201は、定電流供給部300からの電流をパルス波として光源に供給する際にはスイッチ部Swcをオン状態とし、定電流供給部300からの電流を矩形波として光源に供給する際にはスイッチ部Swcをオフ状態とする。
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