公开(公告)号：EP3675603B1

公开(公告)日：2024-11-13

申请号：EP19219127.8

申请日：2019-12-20

Inventor： HUANG, Qiukai ,  WANG, Jianxin ,  CHEN, Huiqiang

IPC: H05B45/10 ,  H05B45/14 ,  H05B45/46

公开(公告)号：EP4417016A1

公开(公告)日：2024-08-21

申请号：EP22801486.6

申请日：2022-10-13

Applicant: Valeo Vision

Inventor： KRICK, Sebastian ,  DAROUSSIN, Samuel

IPC: H05B45/10 ,  B60Q1/38 ,  H05B45/46 ,  H05B47/155 ,  B60Q1/14

CPC classification number: H05B45/10 ,  H05B45/46 ,  H05B47/155 ,  B60Q2900/4020220501 ,  B60Q1/1415

公开(公告)号：EP3784006B1

公开(公告)日：2024-07-24

申请号：EP20161771.9

申请日：2020-03-09

IPC: H05B45/20 ,  H05B45/46 ,  H05B45/3577

CPC classification number: H05B45/20 ,  H05B45/46 ,  H05B45/3577

公开(公告)号：EP4293653A1

公开(公告)日：2023-12-20

申请号：EP22305890.0

申请日：2022-06-17

Applicant: STMICROELECTRONICS (GRENOBLE 2) SAS ,  STMicroelectronics S.r.l.

Inventor： STECKEL, Jonathan ,  CONTI, Giovanni ,  L'EPISCOPO, Gaetano ,  ALEO, Mario Antonio

IPC: G09G3/34 ,  H05B45/22 ,  H05B45/46 ,  G02F1/13357

Abstract: The present disclosure relates to an optoelectronic device (200, 400, 1100) comprising a backlight panel (116) illuminating a display panel (240), the backlight panel comprising an array of light emitting pixels (202, 302), each light emitting pixel comprising at least one subpixel (106, 108, 110, 1102) comprising one or more light emitting diodes positioned on a substrate; and at least one photodetector (210, 1110) positioned on the substrate and arranged to detect an amount of reflected light emitted by said subpixel and reflected by the display panel.

公开(公告)号：EP3627975B1

公开(公告)日：2023-12-20

申请号：EP19194617.7

申请日：2019-08-30

Inventor： WANG, An ,  MO, Rongji ,  CHEN, Xiaoyong

IPC: H05B45/46 ,  H05B45/20 ,  H05B47/165

公开(公告)号：EP4284120A1

公开(公告)日：2023-11-29

申请号：EP23173538.2

申请日：2023-05-16

Applicant: STMicroelectronics S.r.l.

Inventor： SEMINARA, Maria Francesca ,  MUSUMECI, Salvatore Rosario

IPC: H05B45/52 ,  H05B45/46

Abstract: A LED driver chip includes driver circuits, each being coupled to a different pin and including a fault-detection circuit. Each fault-detection circuit includes a force circuit forcing current to a force node, and a sense circuit including a current sensor coupled to the force node, and a comparator comparing a voltage at the force node to a reference voltage to generate a comparison output. Control circuitry, in a pin-to-pin short detection mode, activates the force circuit of a first of the driver circuits and activates the sense circuit of a second of the driver circuits, in a pin-to-ground short detection mode, activates the force and the sense circuit of the same driver circuits. The comparison output of the comparator of the activated sense circuit, if is higher or if lower of the reference voltage, indicates if short between pin or to ground, respectively, is present.

公开(公告)号：EP3903546B1

公开(公告)日：2023-09-20

申请号：EP19845873.9

申请日：2019-12-27

Inventor： QIU, Yifeng ,  MCREYNOLDS, Alan Andrew

IPC: H05B45/325 ,  H05B45/46

公开(公告)号：EP3945751B1

公开(公告)日：2023-06-07

申请号：EP20196920.1

申请日：2020-09-18

Inventor： ZHOU, Zhicheng

IPC: H05B45/395 ,  H05B45/3577 ,  H05B45/20 ,  H05B45/46

公开(公告)号：EP4164339A1

公开(公告)日：2023-04-12

申请号：EP21821624.0

申请日：2021-06-08

Applicant: KOITO MANUFACTURING CO., LTD.

Inventor： OTA Yu ,  KATO Masashi ,  YANAGIZU Shohei ,  KIKUCHI Satoshi

IPC: H05B45/24 ,  B60Q1/04 ,  H05B45/10 ,  H05B45/325 ,  H05B45/375 ,  H05B45/46 ,  H05B47/14 ,  H05B47/20

Abstract: An array-type light-emitting device 212 includes multiple pixel circuits PIX electrically coupled in parallel and spatially arranged in a matrix. A power supply circuit 220 supplies electric power to the array-type light-emitting device 212. A DC/DC converter 224 has an output coupled to a power supply terminal of the array-type light-emitting device 212 via a power supply line. A power supply control circuit 225 sets a target value V CNT(REF) that corresponds to a light distribution pattern, and controls the DC/DC converter 224 such that the control target voltage V CNT approaches the target value V CNT(REF) .

公开(公告)号：EP4064793A1

公开(公告)日：2022-09-28

申请号：EP22172368.7

申请日：2018-11-09

Applicant: Koito Manufacturing Co., Ltd.

Inventor： ICHIKAWA, Tomoyuki ,  MATSUHANA, Ryosuke ,  KIKUCHI, Satoshi ,  KAWABATA, Naoki ,  TAKAHASHI, Norito

IPC: H05B45/10 ,  H05B45/46 ,  H05B45/375 ,  H05B45/347

Abstract: A lighting circuit structured to turn on a plurality of semiconductor light sources is proposed, the lighting circuit comprising a plurality of current sources each of which is to be coupled to a corresponding semiconductor light source in series; a switching converter structured to supply a driving voltage across each of a plurality of series connection circuits each formed of the semiconductor light source and the current source; and a converter controller employing a ripple control method, wherein the plurality of current sources each comprise: a series transistor and a sensing resistor arranged in series with a corresponding semiconductor light source; and an error amplifier structured to adjust a voltage at a control electrode of the series transistor based on a voltage drop across the sensing resistor, and wherein the converter controller is structured to turn on the switching transistor of the switching converter in response to an output voltage of the error amplifier included in any one of the plurality of current sources satisfying a predetermined turn-on condition.