CN210926010U

CN210926010U - Four-color single-drive stage lamp

Info

Publication number: CN210926010U
Application number: CN201922487140.7U
Authority: CN
Inventors: 王志成
Original assignee: SHENZHEN GETIAN OPTO-ELECTRONICS CO LTD
Current assignee: SHENZHEN GETIAN OPTO-ELECTRONICS CO LTD
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-07-03
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a four-color independent-drive stage lamp, which comprises a red copper substrate, wherein the upper end surface of the red copper substrate is provided with a boss, and the boss is connected with an aluminum nitride ceramic substrate; the outer surface of the aluminum nitride ceramic substrate is provided with a gold-plated layer, the upper end face of the aluminum nitride ceramic substrate is provided with four palladium-plated gold lines, the lower end face of the aluminum nitride ceramic substrate is provided with a copper-coated line, and the copper-coated line and the palladium-plated gold line are electrically connected through a connecting copper column arranged inside the aluminum nitride ceramic substrate; the aluminum nitride ceramic substrate is coated with soldering flux and welded with four wafers through an eutectic furnace, the four wafers correspond to four palladium-plated gold wires, the anodes of the wafers are welded on the palladium-plated gold wires, the lower end face of the aluminum nitride ceramic substrate is welded on a boss on the upper end face of the red copper substrate in a backflow mode, and the upper end of the aluminum nitride ceramic substrate is covered with a glass lens. The utility model discloses the light emitting area is less, and its maximum power can do big 30W, is superior to other like products on the market.

Description

Four-color single-drive stage lamp

Technical Field

The utility model relates to the field of lighting fixtures, especially, relate to a four-color stage lamp that drives alone.

Background

At present, the mode of PPA material and multi-path Pin pins is selected for a colorful stage light source in the industry, or a chip is fixed on a ceramic substrate, the used crystal fixing material is insulating glue and silver glue, the thermal resistance is generally 12 ℃/W, and the thermal resistance is relatively high. The PPA packaging material is easy to deform, embrittle and the like at a high temperature;

on the other hand, the wafer that similar products generally used on the market is 45mil wafer, the wafer electrode is mostly two pads (perpendicular wafer) or four pads (just adorn the wafer), electrically conduct through two gold wires during the access state, because the work of pulse current oversize or long-time heavy current (1000mA) can lead to the fluorescent colloid of product, gold wire and chip P-N knot can receive very big influence, cause the problem that the colloid is heated the inflation, the gold wire burns out the lamp and the chip junction temperature risees, so current product can not bear great pulse current, can not work for a long time under the drive of heavy current more, can not satisfy people's user demand.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a four-color drives stage lamp alone of improvement result of use.

In order to realize the purpose, the technical scheme of the utility model is that:

the utility model provides a four-color individual drive stage lamp, includes the base plate, its characterized in that: the base plate is a red copper base plate, a boss is arranged on the upper end face of the red copper base plate, the boss is in a rectangular column shape, and an aluminum nitride ceramic base plate is connected to the boss; the outer surface of the aluminum nitride ceramic substrate is provided with a palladium-gold plated layer, the upper end face of the aluminum nitride ceramic substrate is provided with four palladium-gold plated circuits, the lower end face of the aluminum nitride ceramic substrate is provided with a copper-clad circuit, and the palladium-gold plated circuit on the upper end face of the aluminum nitride ceramic substrate and the copper-clad circuit on the lower end face of the aluminum nitride ceramic substrate are electrically connected through a connecting copper column (the connecting copper column longitudinally penetrates through the aluminum nitride ceramic substrate) arranged inside the aluminum nitride ceramic substrate; the aluminum nitride ceramic substrate is coated with soldering flux and welded with four wafers through an eutectic furnace, the four wafers correspond to four palladium-plated gold wires, anodes of the wafers are welded on the palladium-plated gold wires, the surfaces of the four wafers are coated with fluorescent powder with different colors, the lower end face of the aluminum nitride ceramic substrate is welded on a boss on the upper end face of the red copper substrate in a backflow mode, and the upper end of the aluminum nitride ceramic substrate is covered with fixing glue and is bonded with the glass lens through the fixing glue.

Furthermore, a plurality of fixing through holes are formed in the outer side edge of the red copper substrate, and the diameter of each fixing through hole is 3 mm.

Furthermore, a copper foil circuit and a boss bonding pad are arranged on the upper end face of the red copper substrate.

Furthermore, the upper end face of the red copper substrate is provided with a model label.

Compared with the prior art, the utility model has the advantages and positive effect be:

the utility model adopts high heat-conducting alloy to weld and solidify the crystal, can replace the silver glue or the insulating glue of the old process to solidify the crystal, and the wafer can not drop off due to the environmental influence; the aluminum nitride ceramic substrate can realize good thermoelectric separation effect, and the high-voltage resistance can reach more than 3000V; by using the high-current chip and combining the eutectic process, the thermal resistance of the product can be reduced to 5 ℃/W, and the problem of difficult heat dissipation of the product is greatly improved; moreover, each wafer is welded by 5 gold wires, and the problem of broken wires and lamp failure of a single chip can not occur under the drive of 2500mA current; the LED lamp can be made into four colors of white, warm white, blue light and ultraviolet, and due to the design of the ceramic substrate and the copper substrate, each wafer is independently driven to light, and each LED lamp bead can be driven by current of 0-2500 mA; because the four wafers are close in distance, the light emitting surface of the four wafers is small, the maximum power of the four wafers can be increased by 30W, and the four wafers are superior to other similar products on the market; in addition, the fixed glue surface is covered with the glass sheet with high light transmittance and low reflection rate, so that the light transmittance of the light source can be improved, the glue surface can be protected from being polluted, the direct contact between the glue surface and the environment can be isolated, the aging of the glue surface is slowed down, and the service life of the product is greatly prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a connecting structure diagram of a red copper substrate and an aluminum nitride ceramic substrate;

FIG. 2 is a schematic structural diagram of a red copper substrate;

FIG. 3 is a diagram of the connection structure of the aluminum nitride ceramic substrate and the wafer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by a person of ordinary skill in the art without creative efforts shall be included in the protection scope of the present invention.

As shown in fig. 1, 2 and 3, the four-color single-drive stage lamp in the embodiment includes a red copper substrate 1, a plurality of fixing through holes 102 are formed in the outer edge of the red copper substrate 1, and the diameter of each fixing through hole 102 is 3 mm. The upper end face of the red copper substrate 1 is provided with a copper foil circuit 101 and a copper-clad pad 103. The upper end face of the red copper substrate 1 is provided with a model label 105. A boss 104 is arranged on the upper end face of the red copper substrate 1, the boss 104 is in a rectangular column shape, and the aluminum nitride ceramic substrate 2 is connected to the boss 104; the outer surface of the aluminum nitride ceramic substrate 2 is provided with a palladium-gold plated layer, the upper end surface of the aluminum nitride ceramic substrate 2 is provided with four palladium-gold plated circuits 201, the lower end surface of the aluminum nitride ceramic substrate 2 is provided with a copper-clad circuit, and the palladium-gold plated circuits 201 and the copper-clad circuit are electrically connected through connecting copper columns 202 arranged inside the aluminum nitride ceramic substrate 2; the method comprises the following steps that soldering flux is coated on an aluminum nitride ceramic substrate 2, four wafers 3 are welded through an eutectic furnace, the four wafers 3 correspond to four palladium-gold plated circuits 201, anodes of the wafers 3 are welded on the palladium-gold plated circuits 201, fluorescent powder with different colors is coated on the surfaces of the four wafers 3, the lower end face of the aluminum nitride ceramic substrate 2 is welded on a boss 104 on the upper end face of a red copper substrate 1 in a backflow mode, and the upper end of the aluminum nitride ceramic substrate 2 is covered with fixing glue and is bonded with a glass lens through the fixing glue; glass lens are circular form and glass lens outside integrated into one piece has unable adjustment base, unable adjustment base's marginal shape is square and both ends all are provided with the through-hole that runs through around the unable adjustment base.

The utility model adopts the red copper base plate with good heat dispersion as the heat dispersion base plate (length: 36mm, width: 40mm), and then the length and width of the upper surface of the heat dispersion base plate are designed as follows: 4.76 by 4.73mm boss structure and phi 3mm through hole structure, and designing copper foil circuit, pad structure and label mark; matching with four aluminum nitride ceramic substrates in a serial-parallel manner, carrying out gold plating treatment on the surface of the bracket (carrying out gold plating treatment on a crystal fixing area and pins on the back and the front) and designing an electric circuit, firstly adhering a wafer to be crystal-fixed to the crystal fixing area of the aluminum nitride ceramic substrate through soldering flux, and then carrying out crystal covering on the wafer to be crystal-fixed to the crystal fixing area of the aluminum nitride ceramic substrate under the protection of nitrogen atmosphere through an eutectic furnace; and then connecting the corresponding chip polarity with the substrate according to the welding line graph, and dotting different fluorescent powder on the surface of the LED wafer according to the requirement, such as: and (3) heating, whitening, and the like, performing reflow soldering on the aluminum nitride ceramic substrate to a boss of 4.76 x 4.76mm of the red copper substrate, and covering a high-temperature-resistant glass lens on the surface of the light source to form the completely designed stage lamp ceramic COB light source.

Claims

1. The utility model provides a four-color individual drive stage lamp, includes the base plate, its characterized in that: the base plate is a red copper base plate, a boss is arranged on the upper end face of the red copper base plate, the boss is in a rectangular column shape, and an aluminum nitride ceramic base plate is connected to the boss; the outer surface of the aluminum nitride ceramic substrate is provided with a palladium-gold plated layer, the upper end face of the aluminum nitride ceramic substrate is provided with four palladium-gold plated circuits, the lower end face of the aluminum nitride ceramic substrate is provided with a copper-clad circuit, and the palladium-gold plated circuit on the upper end face of the aluminum nitride ceramic substrate and the copper-clad circuit on the lower end face of the aluminum nitride ceramic substrate are electrically connected through a connecting copper column arranged inside the aluminum nitride ceramic substrate; the aluminum nitride ceramic substrate is coated with soldering flux and welded with four wafers through an eutectic furnace, the four wafers correspond to four palladium-plated gold wires, anodes of the wafers are welded on the palladium-plated gold wires, the surfaces of the four wafers are coated with fluorescent powder with different colors, the lower end face of the aluminum nitride ceramic substrate is welded on a boss on the upper end face of the red copper substrate in a backflow mode, and the upper end of the aluminum nitride ceramic substrate is covered with fixing glue and is bonded with the glass lens through the fixing glue.

2. The four-color, one-drive stage lamp of claim 1, wherein: the outer side edge of the red copper substrate is provided with a plurality of fixing through holes, and the diameter of each fixing through hole is 3 mm.

3. The four-color, one-drive stage lamp of claim 1, wherein: and the upper end face of the red copper substrate is provided with a copper foil circuit and a nickel-gold bonding pad.

4. The four-color, one-drive stage lamp of claim 1, wherein: the upper end face of the red copper substrate is provided with a model label.