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Light-emitting diode apparatus

A technology for light-emitting diodes and equipment, which is applied in electroluminescent light sources, lighting and heating equipment, semiconductor devices of light-emitting elements, etc.

Active Publication Date: 2016-06-01
STANLEY ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, the number of individual elements will be increased, the wiring of the control elements will be complicated, and the number of driving power sources should be increased

Method used

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  • Light-emitting diode apparatus
  • Light-emitting diode apparatus
  • Light-emitting diode apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Figure 1A , Figure 1B , Figure 1C and Figure 1D is a schematic plan view illustrating an array of light emitting diodes arranged in a matrix shape according to Embodiment 1, illustrating Figure 1A An equivalent circuit diagram of the connection of eight light emitting diodes A to H arranged in the vertical direction, a graph illustrating the area ratio of the light emitting diodes A to H, and an equivalent circuit diagram of eight rows and five columns of light emitting diodes in a matrix.

[0024] like Figure 1A As illustrated in the plan view in , for example, eight rows and 31 columns of light emitting diodes 2 are arranged in a matrix shape in the light emitting area. The columns of LEDs arranged in the horizontal (H-H') direction are arranged at equal intervals. On both sides of the vertical axis (V-V'), 15 columns and eight rows of light-emitting diodes are arranged in a matrix shape. Corresponding columns are collectively divided vertically, and thus ...

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PUM

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Abstract

A light-emitting diode apparatus includes a support substrate; and a light-emitting diode array formed of multiple light-emitting diodes arranged two-dimensionally on the support substrate, constituting a light distribution center having a highest brightness in the light-emitting diode array, wherein the multiple light-emitting diodes are divided into a plurality of control units, drive currents of which can be individually controlled, wherein the plurality of control units include a plurality of composite control units in each of which a plurality of light-emitting diodes are connected in series, and wherein among the plurality of light-emitting diodes in each of the composite control units, a light-emitting diode which is positioned farther from the light distribution center has a larger light-emitting area than that of a light-emitting diode which is positioned nearer from the light distribution center.

Description

technical field [0001] The present invention relates to a light emitting diode device, and in particular, to a light emitting diode device comprising a plurality of light emitting diodes arranged in a planar light emitting area. Background technique [0002] In recent years, a technology called Adaptive Driving Beam (ADB: Adaptive Driving Beam) or the like has attracted attention regarding vehicle headlights. According to the ADB, the light distribution shape is controlled in real time according to the condition or environment ahead of the vehicle (ie, whether there is a car in the oncoming lane, a car ahead, etc., and its position). [0003] According to this technology, for example, in the case where a car in the oncoming lane is detected in the high beam distribution area (i.e., during driving with high beam), it is possible to reduce only the oncoming traffic in the area illuminated by the headlight in real time. beam of light in the area of ​​the vehicle. The driver h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/40H01L25/0753H01L2924/0002B60Q1/143B60Q2300/41B60Q2300/122B60Q2300/42F21Y2115/10F21S41/19F21S41/143F21S41/25F21S41/663F21V23/003F21S41/153H01L2924/00F21V19/001
Inventor 宫地护河合良介
Owner STANLEY ELECTRIC CO LTD