CN203023880U

CN203023880U - Light-emitting diode (LED) module with multiple welding feet to carry out power supply

Info

Publication number: CN203023880U
Application number: CN2012207057702U
Authority: CN
Inventors: 熊大曦; 杨西斌
Original assignee: SUZHOU KEYI-SKY SEMICONDUCTOR TECHNOLOGIES Inc
Current assignee: SUZHOU KEYI-SKY SEMICONDUCTOR TECHNOLOGIES Inc
Priority date: 2012-12-19
Filing date: 2012-12-19
Publication date: 2013-06-26
Anticipated expiration: 2022-12-19

Abstract

The utility model discloses a light-emitting diode (LED) module with multiple welding feet to carry out power supply. Two welding feet or three welding feet or four welding feet or a plurality of welding feet are combined to carry out power supply on the LED module with the multiple welding feet to carry out power supply. Each LED module comprises a high thermal conduction substrate, an LED chip and welding feet, wherein the high thermal conduction substrate is a metal substrate or a ceramic substrate, the welding feet are directly welded on the high thermal conduction substrate, and the LED chip is in an anode-sharing structure, and is directly and fixedly connected on the high thermal conduction substrate. According to the LED module with the multiple welding feet to carry out power supply, the plurality of welding feet are used for carrying out independent power supply on the LED chip of the LED module, high luminous efficiency of the anode-sharing structure of the LED chip is maintained, drive of a plurality of low currents are simultaneously carried out on the LED chip through the plurality of welding feet at the same time, finally light emission which is same as light emission obtained through power supply of a single large current can be obtained through accumulation of the plurality of low currents, the requirements of a system to a high-performance power source are greatly reduced, an ordinary power source which is widely used at present can be used for driving an LED module with an extra large power to carry out normal work, cost of the system is greatly reduced, and the LED module with the multiple welding feet to carry out power supply has a wide application prospect in the fields which need high-luminance illumination, such as stage lighting, remote projection and special type illumination.

Description

Many leg power supply LED modules

Technical field

The present invention relates to the semiconductor light emitting technical field.

Background technology

Semiconductor light sources, as LED light source etc., have short, the advantage such as brightness is high, energy consumption is low, volume is little, the life-span is long, security is high start-up time, progressively replacing high energy consumption, short-life light sources such as traditional halogen tungsten lamp, xenon lamp, obtain a wide range of applications.

At present, high-power LED light source, generally all require to work under high current density, therefore harsh requirement has been proposed the high-performance power supply, common power can not be brought into play the performance advantage of great power LED fully, replace with the high-performance power supply fully and will have multiple power source now, cost is too high, needs the light source module that can realize little electric current power supply badly.The present invention bases oneself upon existing power source performance, has invented a kind of brand-new LED module power supply mode, with a plurality of little electric currents power supplies, has replaced single large electric current power supply, decrease high-power LED light source apply cost.

Summary of the invention

For overcoming the shortcoming that existing great power LED technology can only be under high current density work, main purpose of the present invention designs many leg power supply LED modules exactly, its beneficial effect is to realize large luminous flux output by little electric current power supply, greatly reduces the requirement to the high-performance power supply.

Preferably, described many leg power supply LED modules, employing two, three, four or the combination of a plurality of leg are powered to the LED module, and leg can be powered simultaneously, also can adopt as required wherein certain several combination to power.

Preferably, described many leg power supply LED modules, its chip is the common anode electrode structure, but also can select as required the common cathode arrangement works.

Preferably, described many leg power supply LED modules, the number of chips of its encapsulation can freely change.

Preferably, described many leg power supply LED modules, its chip can be connected simultaneously luminous, also can control respectively by circuit independent luminous.

Description of drawings

Fig. 1 is the structural representation that tradition adopts the LED module of single leg power supply.

Fig. 2 is the structural representation that the present invention adopts the LED module of two leg power supplies.

Fig. 3 is the structural representation that the present invention adopts the LED module of four leg power supplies.

The main element description of symbols

1: leg.

2: locating hole.

3: high thermal conductive substrate.

The 4:LED chip.

5: thermistor.

The specific embodiment

Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is specifically described.

Embodiment 1

As shown in Figure 1, be the LED modular structure schematic diagram of traditional single leg of employing, formed by leg (1), locating hole (2), high thermal conductive substrate (3), LED chip (4), thermistor (5) etc.Leg (1) is encapsulated on high thermal conductive substrate (3), realizes the power supply to module; LED chip (4) is encapsulated on high thermal conductive substrate (3), forms the common anode electrode structure, and locating hole (2) is realized the accurate location of LED chip (3).LED module shown in this schematic diagram needs power supply to provide a very high electric current by leg for module when high-power lower work, and is therefore very harsh to the requirement of power supply.

Embodiment 2

As shown in Figure 2, be packaged with two legs (1) on high thermal conductive substrate (3).Two legs are connected respectively on power supply, can power to module simultaneously, therefore just can be by apply simultaneously a little electric current on two legs, add up and obtain a large electric current, realize the job requirement of great power LED module under high current density, greatly lower system to the requirement of high-performance power supply.Module in embodiment 2, except the power supply mode difference, other side is identical with the module operation principle shown in embodiment 1.

Embodiment 3

As shown in Figure 3, be packaged with four legs (1) on high thermal conductive substrate (3).Four legs are connected respectively on power supply, can power to module simultaneously, and embodiment 2 is similar with embodiment 2 operation principles, but can realize less electric current power supply, have further reduced the requirement of system to power supply.

Many legs power supply LED modules described in above embodiment can encapsulate the leg of different numbers according to actual needs, obtain suitable and electric current existing power supply coupling, can realize in principle and all versatility LED power supply mates.Describedly not only can realize the outgoing of white light light, and can as required, by encapsulating the chip of different centre wavelengths, realize the light outgoing of multiple different-waveband.

By above embodiment, be not difficult to find out the design that the present invention proposes a kind of many leg power supply LED modules.

Above embodiment only is the design of explanation the technology of the present invention and characteristics; its purpose is to allow the person skilled in the art understand content of the present invention and implemented; can not limit protection scope of the present invention with this, all little variations such as Spirit Essence is done according to the present invention or modify all are encompassed in protection scope of the present invention.

Claims

1. many legs power supply LED modules is characterized in that: adopt two, three, four or the combination of a plurality of leg the LED module is powered, leg can be powered simultaneously, also can adopt as required wherein certain several combination to power.

2. many legs power supply LED module according to claim 1, it is characterized in that: the LED module chip is the common anode electrode structure, but also can select as required the common cathode arrangement works.

3. many legs power supply LED module according to claim 1, it is characterized in that: in described many legs power supply LED modules, the number of chips of its encapsulation can freely change.

4. many legs power supply LED module according to claim 1, it is characterized in that: described many legs power supply LED modules, its chip can be connected simultaneously luminous, also can control respectively by circuit independent luminous.