CN202206646U

CN202206646U - Novel circuit structure applied to plane LED light source

Info

Publication number: CN202206646U
Application number: CN2011201476144U
Authority: CN
Inventors: 王昊; 黄月天; 王嵬嵬; 岳斌; 黄南川; 闫春莲
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-11
Filing date: 2011-05-11
Publication date: 2012-04-25
Anticipated expiration: 2021-05-11

Abstract

The utility model relates to the field of an LED light source, and especially relates to a novel circuit structure applied to a plane LED light source. The novel circuit structure applied to a plane LED light source comprises a substrate. An arc-shaped silver circuit, a linear silver circuit and a bonding pad are printed on the substrate. The arc-shaped silver circuit is positioned in the center of the substrate. The linear silver circuit is positioned in the center of the arc-shaped silver circuit. The bonding pad is connected with the arc-shaped silver circuit. The arc-shaped circuit structure based on silver paste sintering is adopted so that reliability and solderability of the circuit are improved. Besides, the novel circuit structure of the utility model has the characteristics of little pollution and simple process.

Description

Be applied to the novel circuit configuration of planar LED light source

Technical field

The utility model belongs to the led light source field, is specifically related to a kind of circular arc circuit structure of sintering silver slurry, is used for the crystal grain power supply of the SMD encapsulation of LED area source.

Background technology

The LED area source by light-emitting diode (LED crystal grain), substrate, be fixed in deposited copper circuit on the substrate, connect spun gold lead, encapsulation silica gel formation that light-emitting diode and deposited copper circuit constitute closed circuit.Wherein encapsulate and be mixed with fluorescent material in the silica gel to produce various coloured light.The utility model circuit is to improve to the deposited copper circuit that is fixed on the substrate; Through improving constituent material, the circuitry shapes of applying copper circuit; Simplified manufacturing technique, reduce cost, improve spun gold and circuit welding performance, improve soldering reliability; Reduce the discharge capacity of pollutant in the process for preparing circuit simultaneously, the protection environment.

At present in the LED area source is made; Deposited copper circuit is through the circuit that designs is xeroxed on the copper film through sensitization; Through molysite or copper salt solution are as corrosive agent at high price, the copper film of going up circuit is molten to be gone with being xeroxed again, and the copper film that stays sensitization place constitutes deposited copper circuit.Dissolving copper film that goes and the molysite that had reacted or mantoquita corrosive agent becomes waste liquid, can in natural environment, form heavy-metal pollution.This arts demand forms circuit through gluing, coating photosensitive liquid, exposure, photographic fixing, the unnecessary copper film of etching through overpickling, alkali cleaning, repeatedly wash to remove greasy dirt, the dust on the copper film simultaneously, cleans, oven dry, zinc-plated in case oxidation again.Whole technology has the dozens of work step, and in special equipment, carries out, and has increased cost.

On circuit design, extensively adopt at present linear pattern copper film or grooved copper film are constituted the area source positive and negative polarities, light-emitting diode is passed through multirow, multiple row mode array between the two poles of the earth.Will be near the corresponding utmost point of the light-emitting diode of positive and negative polarities position through spun gold and copper film welding; A plurality of light-emitting diodes of each interline part are connected through gold thread; Constitute the row series circuit, each row series circuit forms the whole parallel connection of multirow through being connected with the area source positive and negative polarities at last.Promptly on whole area source circuit, form string and hybrid circuit.The shortcoming of this mode is as long as a light-emitting diode damages, and all can make the led failure of whole delegation.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of novel circuit configuration that is applied to the planar LED light source easy to use.

The novel circuit configuration that is applied to the planar LED light source of the utility model; Comprise substrate; Be printed with the silver circuit of circular arc, the silver circuit of linear pattern and pad on the said substrate; The silver circuit of circular arc is positioned at the middle part of substrate, and the silver circuit of linear pattern is positioned at the middle part of the silver circuit of circular arc, and pad is connected with the silver circuit of circular arc.

Compared with prior art the beneficial effect of the utility model is: through improving the preparation circuit methods, simplified manufacturing process, reduced cost; Spun gold and circuit welding performance have been improved simultaneously; Improved soldering reliability, reduced the discharge capacity of pollutant in the process for preparing circuit, the protection environment.

Through improving circuit design, even make single led failure, can guarantee also that except that the inefficacy light-emitting diode other light-emitting diodes can both operate as normal, and be unlikely to the brightness and the effect of light source are impacted, improved the reliability of circuit.

Description of drawings

Fig. 1 is the structure chart that the utility model is applied to the novel circuit configuration of planar LED light source.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.

As shown in Figure 1; A kind of novel circuit configuration that is applied to the planar LED light source; Comprise substrate 3, be printed with the silver circuit of circular arc 2, the silver circuit 1 of linear pattern and pad 4 on the said substrate 3, the silver circuit 2 of circular arc is positioned at the middle part of substrate 3; The silver circuit 1 of linear pattern is positioned at the middle part of the silver circuit 2 of circular arc, and pad 4 is connected with the silver circuit 2 of circular arc.

The utility model circuit the design on through the silver circuit at the two poles of the earth is widened; Change circular arc into; Increased the inflow-rate of water turbine of circuital current, between every row light-emitting diode, increased the silver circuit of a whole linear pattern, each light-emitting diode the two poles of the earth links to each other through the silver circuit that the spun gold welding is adjacent respectively; Formation makes each light-emitting diode be parallel connection on the column direction separately, the structure of light-emitting diode for connecting of going, listing with other.

The damage of arbitrary light-emitting diode does not have influence to other light-emitting diode, has improved the reliability of light source.The circuitous pattern that the silver circuit of linear pattern is constituted between the silver circuit of circular arc of the utility model circuit employing simultaneously and row is more attractive in appearance than present circuitous pattern in appearance.

The utility model circuit preparation method is: be that 70% to 80% silver slurry is bitten on substrate through silk screen printing with silver content at first; Then substrate is placed and carry out low-temperature setting in the baking oven; High temperature sintering more at last.The entire circuit preparation section has only simple three steps, has improved operating efficiency, has reduced cost, and in whole operation, unnecessary silver slurry after treatment can recycling, does not produce discarded object, can not cause the pollution of environment.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and modification, these improvement and modification also should be regarded as the protection range of the utility model.

Claims

1. novel circuit configuration that is applied to flat led light source; Comprise substrate (3); It is characterized in that: be printed with the silver circuit of circular arc (2), the silver circuit of linear pattern (1) and pad (4) on the said substrate (3); The silver circuit of circular arc (2) is positioned at the middle part of substrate (3), and the silver circuit of linear pattern (1) is positioned at the middle part of the silver circuit of circular arc (2), and pad (4) is connected with the silver circuit of circular arc (2).