CN201916724U - Micro-volume high brightness luminous unit integrated with multiple LEDs - Google Patents

Abstract

A micro-volume high brightness luminous unit integrated with multiple LEDs relates to the field of LED manufacture, and particularly relates to an encapsulating method of LED lamps. The luminous unit mainly comprises substrates, LED chips and UV (ultraviolet) glue. The luminous unit is characterized in that a square cylinder is enclosed by five square substrate, each substrate in the square cylinder is pasted with more than one LED chip, all the LED chips are connected in series or in parallel through thin wires so as to lead out a head electrode, and the square cylinder is full of the UV glue. The LED chips with colors of red, green and blue can be pasted, so that the luminous unit can obtain light sources with different light characteristics so as to realize controlling of the light sources. The micro-volume high brightness light source provided by the utility model is extremely useful in narrow space, and promotes the science research progress and the technology development in microtech industry.

Description

Many LED integrated light-emitting unit of the long-pending high brightness of a kind of microbody

Technical field

Many LED integrated light-emitting unit of the long-pending high brightness of a kind of microbody belongs to LED and makes the field, is specifically related to the encapsulation of LED lamp.

Background technology

After Edison's invention carbon filament incandescent lamp in 1879, lighting engineering just enters a brand-new era.Incandescent lamp just has birth defects from that day that it comes out, and tungsten filament heating power consumption is big, and the frangible power consumption of bulb is big, and gets an electric shock easily.Though fluorescent lamp is more unfavorable to people's eyesight than incandescent lamp electricity saving and energy saving, the mercury in the fluorescent tube also is harmful to human body and environment.Yet that really cause lighting engineering generation qualitative change still is LED.

LED (Light Emitting Diode), light emitting diode, be expected to become " the 4th generation light source ", compare with the traditional lighting technology, the maximum difference of LED is the difference of structure and material, and it is a kind of semiconductor that electric energy can be converted into visible light, the two-layer up and down electrode that is equipped with, there is conductive material the centre, and material that can be luminous is in the interlayer of two electrodes, and the color of light changes to some extent according to the difference of material character.LED is produced the light of superhigh intensity by the superconduction luminescent crystal, the heat that it sends seldom, waste too many heat unlike incandescent lamp, also produce toxic gas because of high energy consumption unlike fluorescent lamp, also damage easily unlike neon light requires high voltage, LED has been known as the environmental protection high-tech light source of a new generation by the whole world.

The LED illuminating product utilizes LED as the produced ligthing paraphernalia of light source exactly, at lighting field, the application of LED luminous product is just attracting common people's sight, LED is as a kind of novel green light source product, must be developing tendency in future, it be the novel illumination light source epoch of representative that 21 century will enter with LED.

LED has the following advantages.

1. reliability height, long LED of life-span are the solid cold light source, and anti-vibration not have loosening part in the lamp body, do not have the luminous easy burning of waiting for death, heat deposition, stroll shortcoming such as decline, and can reach 60000～100000h service life, grow more than 10 times than the conventional light source life-span.The LED stable performance, can be under-30～+ 50 ℃ of environment operate as normal.

2. luminous efficiency height: the luminous efficiency of LED is higher 2～3 times than incandescent lamp at present.Along with the continuous development of LED technology, luminous efficiency all has raising significantly every year, can reach 100lm/W soon in recent years.

3. caloric value is low: LED uses cold light source, and dazzle is little, no infra-red radiation, and therefore, aspect heating, LED is little more many than the caloric value of incandescent lamp.

4. response speed is fast: because LED utilizes electronics-hole to bury in oblivion directly luminous phenomenon, therefore, the luminous response time is very short, usually below 100ms.

5. anti-collision: except optical characteristics, what conventional light source was used all is glass tube, therefore has shock-sensitive moving and frangible characteristics; LED does not use glass, therefore has anti-vibration and crash-resistant advantage.

6. volume is little, light: LED is the solid light source by semi-conducting material manufacturing, has little, the light characteristics of volume, therefore can make full use of this point in design.

7. new green environment protection light source: LED uses cold light source, and dazzle is little, and is radiationless, do not send harmful substance in the use.The LED operating voltage is low, DC driven, and (single tube 003～0.06W), electric light power transfer are near 100%, and the equal illumination effect is more energy-conservation more than 80% than conventional light source for super low-power consumption.The LED environmental benefit is better, and the spectrum of LED almost all concentrates on visible light frequency band, and visual efficiency is up to 80%～90%, and the incandescent lamp visual efficiency of equal light efficiency only is 10%～20%.Do not have ultraviolet ray and infrared ray in the spectrum, and discarded object is recyclable, does not pollute, do not contain mercury element, can safe touch, belong to typical green illumination light source.

In recent years, LED developed rapidly, and the luminous efficiency of LED increases by 100 times, and cost descends 10 times, and its development prospect has attracted the global illuminating product manufacturer's adding led light source and the market development.LED is described as the 21 century new light sources, be expected to become after incandescent lamp, fluorescent lamp, high-intensity gas discharge lamp the 4th generation light source.

The LED encapsulation technology encapsulates the LED luminescence chip exactly, makes the light source that can directly use.The mostly development and differentiation on the Discrete device packaging technical foundation of LED encapsulation technology, but very big particularity is arranged.Generally speaking, the tube core of discrete device is sealed in the packaging body, and the main four protection tube cores of the effect of encapsulation are electrically connected with finishing.The LED encapsulation then is the function that will finish the output signal of telecommunication, protection tube core operate as normal, output visible light; the design of existing electrical quantity and specification requirement; the design and the specification requirement of optical parameter are arranged, so the encapsulation technology of LED has very important influence for the characteristics of luminescence of final led light source again.

Conventional LED is packaged with bullet cut and surface attaching type.Bullet cut LED encapsulation is the led chip of packing in the cup of band lead frame, and with the encapsulation of epoxy resin bullet cut, key dimension is on every side

The packaging appearance of surface attaching type LED varies, but all is in the cavity of pottery or ester moulding led chip to be installed, and then at cavity potting resin or silicones etc.

LED is expected to become " the 4th generation light source " with its remarkable advantage.But still there are the following problems needs to improve for LED:

Luminous quantity is low.LED is the micron-sized semiconductor of hundreds of, and the electric current by chip has tens milliamperes, and voltage is about 3V, and power consumption is very low, is about 100mW, although therefore luminous efficiency height, luminous quantity is also little, and is lower than the power of conventional light source, a little less than the luminous quantity.

Selective color is few.The glow color of the LED that buys that uses as light source substantially only is red, blue, green three looks in the market, for the application scenario existence very big inconvenience of other colors of needs as light source.

LED has very big prospect in the application of small space.At present, LED is widely used in the large tracts of land picture and text and shows conventional light source application facet such as full-color screen, state indication, sign illumination, and because LED has little, the light characteristics of the not available volume of conventional light source, in conventional light source implements the small space of comparison difficulty, LED has huge value, can advance the development of the science and technology research that in the past was subjected to the restriction of conventional light source volume weight factor.Therefore, LED has prospect and necessity as the research of miniature very much.

Summary of the invention

The purpose of this utility model is to provide a kind of and realizes high-intensity LED lighting unit in microbody is long-pending, and the optical characteristics of adjustable output light.

Because the power consumption of LED is very low, so although the luminous efficiency height, single led luminous quantity is also little, and in order to reach enough luminous quantities, it is common luminous to increase luminous quantity to arrange a plurality of led chips.In order in the microbody product space, to obtain high-strength light, the utility model provides the integrated unit of a kind of LED, arrangement led chip as much as possible in unit space, utilization mixed light principle, and the refraction of light, principle of reflection, the light that the design space structure is sent led chip converges as far as possible, finally obtains the light source that volume is little, intensity is high.Based on above structural design,,, thereby realize regulating of the long-pending light source optical characteristics of microbody as long as the light intensity of the long-pending interior red, green, blue three-color LED chip of control microbody can also synthesize versicolor light source according to the principle of three primary colours.

Based on above-mentioned theory, the technical scheme that the utility model is taked is as follows.

Design the integrated monochromatic luminescence unit of many LED of the long-pending high brightness of a kind of microbody, constitute by substrate, led chip, UV glue, wherein, five square substrate surround a square tube, be pasted with more than one led chip on each substrate in the square tube, each led chip passes through the thin wire serial or parallel connection, and draws total electrode, and is full of UV glue in the square tube.

The size of described five substrates is all 1mm * 1mm * 0.5mm; Or one of them is 1mm * 1mm * 0.5mm, and all the other four is 1mm * 2mm * 0.5mm.Described substrate adopts potsherd.

For the colorful light-emitting unit following scheme is arranged:

Design the integrated colorful light-emitting of the many LED unit of the long-pending high brightness of a kind of microbody, constitute by substrate, led chip, UV glue, it is characterized in that: five square substrate surround a square tube, be pasted with the led chip more than four on each substrate in the square tube, led chip comprises redness, green and blue, perhaps dichromatism wherein, and the electrode of homochromy led chip is together in series by thin wire, and draw separately total electrode, and be full of UV glue in the square tube.

The size of described five substrates is all 1mm * 1mm * 0.5mm; Or one of them is 1mm * 1mm * 0.5mm, and all the other four is 1mm * 2mm * 0.5mm.

For the situation that comprises three kinds of color led chips, the quantity ratio of described redness, green and blue led chip is 7: 6: 7.

Described substrate adopts resin sheet.

Advantage of the present utility model is: a plurality of led chips are integrated in the long-pending structure of microbody, and the long-pending structure of microbody has realized led chip dense arrangement spatially, has reduced the size of light source greatly, has established the basis of the long-pending higher source luminance of microbody.And, luminous intensity can be controlled by the electric current of regulating led chip, thereby the light of various different optical characteristics can be sent comparatively easily, satisfy the light source requirements under the different condition, for the scientific research of LED with use important meaning is all arranged.The long-pending higher source luminance of this that the utility model proposes kind of microbody will be fully developed talents in the small space field, promote the scientific research progress and the technical development of microtechnology industry.

Description of drawings

Fig. 1 a is the connection diagram of substrate and junctional membrane among the utility model embodiment 1;

Fig. 1 b is the arrangement schematic diagram of led chip among the utility model embodiment 1;

Fig. 1 c is the shaping schematic view of long-pending many LED of the high brightness unit of microbody among the utility model embodiment 1;

Fig. 1 d is the finished product schematic diagram of long-pending many LED of the high brightness unit of microbody among the utility model embodiment 1;

Fig. 2 a is the connection diagram of substrate and junctional membrane among the utility model embodiment 2;

Fig. 2 b is the arrangement schematic diagram of led chip among the utility model embodiment 2;

Fig. 3 is the circuit catenation principle figure of led chip among the utility model embodiment 2;

Fig. 4 a is the shaping schematic view of long-pending many LED of the high brightness unit of microbody among the utility model embodiment 2;

Fig. 4 b is the finished product schematic diagram of long-pending many LED of the high brightness unit of microbody among the utility model embodiment 2.

Among the figure: 1, potsherd substrate, 2, the rubber junctional membrane, 3, led chip, 4, UV glue, 5, photomask, 8, red LED chip, 9, blue-light LED chip, 10, the green light LED chip, 11, resin substrate, 12, high-temperature resistant membrane.

The specific embodiment

Below in conjunction with Fig. 1 a～d embodiment 1 of the present utility model is described in detail.

Include potsherd substrate 1, rubber junctional membrane 2, led chip 3, UV glue 4, photomask 5.Wherein, potsherd substrate 1 is the potsherd of five 1mm * 1mm * 0.5mm, rubber junctional membrane 2 materials are the rubber thin skin, potsherd substrate 1 connects as shown in Figure 1a by rubber junctional membrane 2, with five corresponding respectively being fixed on five potsherds of potsherd substrate 1 of high-power LED chip 3 that are of a size of 45mil, show as Fig. 1 b; Use 6 pairs of led chip 3 bonding wires of gold wire bonder, five led chips 3 are connected in series; The application machine structure is turned up 1 of four ceramic substrate on four limits then, shown in Fig. 1 c, UV glue 4 is splashed in the cube that is made of potsherd substrate 1, with UV light irradiation UV glue 4, makes its curing; Surround the cube that is made of potsherd substrate 1 with photomask 5, Fig. 1 d is the long-pending many led light sources of high brightness of the microbody of making.

Below in conjunction with Fig. 2 a～b, Fig. 3, Fig. 4 a～b embodiment 2 of the present utility model is described in detail.

Include resin substrate 11, high-temperature resistant membrane 12, LED blue chip 9, LED red light chips 8, LED green glow chip 10, UV glue 4, photomask 5.Wherein, resin substrate 11 is the resin sheet of five 2mm * 2mm * 0.5mm, high-temperature resistant membrane 12 materials are high-temperature resistant membrane, the PET film, resin substrate 11 connects shown in Fig. 2 a by high-temperature resistant membrane 12, seven high-power blue-light LED chips that are of a size of 45mil 9, seven are of a size of the resin substrate 11 that the high-power red LED chip 8 of 45mil, six high-power green light LED chips 10 that are of a size of 45mil are individually fixed in five 2mm * 2mm * 0.5mm, fix four chips on each resin substrate 11, shown in Fig. 2 b; Electrode with 6 pairs of led chips of gold wire bonder carries out bonding wire, and the connected mode of led chip adopts connection in series-parallel to connect, color chip series connection of the same race, and the parallel connection of different colours chip, the connection in series-parallel schematic diagram is as shown in Figure 3; After welding finishes, four resin sheets around the substrate 11 are turned up, formed cube structure, shown in Fig. 4 a, UV glue 4 is splashed in the cube, use 7 irradiations of UV lamp that UV glue 4 is solidified; At last, wrap other faces except that light-emitting window with photomask 5, Fig. 4 b is and makes the long-pending many led light sources of high brightness of the microbody of finishing.

Above-mentioned photomask 5 adopts the black wrappage, as black gummed paper, pitch-dark.

In the present embodiment, also the electrode of each color led chip can be drawn respectively, control the luminous quantity of each color, thereby obtain the light source of different optical characteristic, realize that light source is controlled by the branch current of regulating the LED modules with different colors chip.Optical element such as optical filter, lens etc. in addition, can also be as required be installed at the light-emitting window place be satisfied light source requirements under the specified conditions.

Claims (7)

1. many LED integrated light-emitting unit of the long-pending high brightness of a microbody, constitute by substrate, led chip, UV glue, it is characterized in that: five square substrate surround a square tube, be pasted with more than one led chip on each substrate in the square tube, each led chip is by the thin wire serial or parallel connection, and draw total electrode, and be full of UV glue in the square tube.

2. many LED integrated light-emitting unit of the long-pending high brightness of a kind of microbody as claimed in claim 1, it is characterized in that: the size of described five substrates is all 1mm * 1mm * 0.5mm; Or one of them is 1mm * 1mm * 0.5mm, and all the other four is 1mm * 2mm * 0.5mm.

3. many LED integrated light-emitting unit of the long-pending high brightness of a kind of microbody as claimed in claim 1 or 2 is characterized in that: described substrate adopts potsherd.

4. many LED integrated light-emitting unit of the long-pending high brightness of a microbody, constitute by substrate, led chip, UV glue, it is characterized in that: five square substrate surround a square tube, be pasted with the led chip more than four on each substrate in the square tube, led chip comprises redness, green and blue, perhaps dichromatism wherein, and the electrode of homochromy led chip is together in series by thin wire, and draw separately total electrode, and be full of UV glue in the square tube.

5. many LED integrated light-emitting unit of the long-pending high brightness of a kind of microbody as claimed in claim 4, it is characterized in that: the size of described five substrates is all 1mm * 1mm * 0.5mm; Or one of them is 1mm * 1mm * 0.5mm, and all the other four is 1mm * 2mm * 0.5mm.

6. many LED integrated light-emitting unit of the long-pending high brightness of a kind of microbody as claimed in claim 4, it is characterized in that: the quantity ratio of described redness, green and blue led chip is 7: 6: 7.

7. as many LED integrated light-emitting unit of claim 4 or the long-pending high brightness of 5 described a kind of microbodys, it is characterized in that: described substrate adopts resin sheet.

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