CN1588654A - White light light-emitting element - Google Patents
White light light-emitting element Download PDFInfo
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- CN1588654A CN1588654A CN 200410057273 CN200410057273A CN1588654A CN 1588654 A CN1588654 A CN 1588654A CN 200410057273 CN200410057273 CN 200410057273 CN 200410057273 A CN200410057273 A CN 200410057273A CN 1588654 A CN1588654 A CN 1588654A
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Abstract
Tne invention relates to a kind of light-emitting component particularly to white light light-emitting component producing white light source by mixing multiple lights with complementary colours. Main prodn. method is to fit at least a second light-emitting component which can project second colour light or third colour light on surface of first light-emitting component which can project first colour light to produce more uniform white light source by mixed complementary first colour light and second colour light which are vertically arranged. The second light-emitting component consists of first material layer and second material layer, at least a extending fillister and an isolating fillister which can pass through first and second material layers, first electrode and second electrode are fit on surface of second material layer acrossing isolating fillister, extending electrode can be electric connected with first electrode and first material layer is fit in extending fillister. So first and second electrodes are in same horizontal height, thus it is beneficial to proceed follow-up process and increase product yield.
Description
Technical field
The present invention relates to a kind of light-emitting component, particularly relate to a kind of white light emitting element that can pass through, thereby help the carrying out of subsequent technique and the raising of product percent of pass by the mixing generation white light source of a plurality of complementary coloured light.
Background technology
Light-emitting diode (LED; Light-Emitting Diode) since have the life-span long, volume is little, power consumption is few, reaction speed is fast, radiationless and monochromaticjty emitting characteristics and advantage, be widely used in every products such as indicator light, advertisement plate, traffic sign lamp, automobile lamp, display pannel, communication appliance, consumer electronics.Wherein, can produce the white-light luminescent component of white light source, more extremely common people's expectation owing to can replace the application of incandescent source and backlight.
The making of white light emitting element at present mainly comprises three kinds of methods: red, blue, green three kinds of light-emitting components are inserted in the same packaging body, produce white light source in the smear mode; Huang, blue two kinds of light-emitting components are inserted in the same packaging body, produce white light source in the smear mode equally; And be light source with blue light, purple light or ultraviolet light, irradiation and excitated fluorescent powder, dyestuff or light conversion layer are to produce white light source.
Figure 1A shows prior art and utilizes red, blue, green three kinds of elements to insert in the same packaging body to produce the structural representation of white light source, wherein light- emitting component 13,17 and 19 all is located on the same substrate 11 of same packaging body 18, and light- emitting component 13,17 and 19 is circumscribed with first electrode and second electrode separately respectively.When first electrode of each light-emitting component and second electrode provide suitable voltage difference respectively, light-emitting component 13 will produce the first coloured light L1 (for example blue light), light-emitting component 17 will produce the 3rd coloured light L3 (for example ruddiness), light-emitting component 19 then produces the 4th coloured light L4 (for example green glow), L1, L3 and L4 can produce the white light emitting element 10 of white light source through after smear (light) effect.
Though above-mentioned existing light-emitting component can obtain white light through the suitable mixing of each coloured light, has following defective:
1, each light- emitting component 13,17,19 all is provided with electrode on its surface, and directly connects lead-in wire on its surface through the lead-in wire program, complex process not only, thereby and lead-in wire come off easily and cause the rising of product defect rate.
2, light- emitting component 13,17 and 19 light-emitting area all are provided with first electrode and second electrode, and they will cover part light, thereby luminous efficiency is reduced.
3, light- emitting component 13,17 and 19 is all in the same plane, can not effectively reduce the area of plane of element, thereby can't be used for compact product design.
4, light- emitting component 13,17 and 19 all at grade, the luminous position of radiant of all kinds is independent mutually, occurs the phenomenon of colour mixture inequality when colour mixture easily.
At above problem, the white light emitting element of another kind of prior art has appearred.Shown in Figure 1B, light-emitting component 13 and 15 is vertically arranged in the same packaging body, light-emitting component 13 and 15 is external first electrode and second electrode respectively.When first and second electrodes to each light-emitting component provide a suitable voltage difference, light-emitting component 13 will produce the first coloured light L1 (for example blue light), light-emitting component 15 will produce the second coloured light L2 (for example gold-tinted), by the complementary light relation generation white light emitting element 100 of the first coloured light L1 and the second coloured light L2.Because the light path of the second coloured light L2 enters first light-emitting component 13 by second light-emitting component 15 successively, and is throwed away by the upper surface of first light-emitting component 13, its launching position with first coloured light is identical, therefore can reach two kinds of well-mixed purposes of coloured light.With respect to the embodiment shown in Figure 1A, the situation of each coloured light mixed light inequality can be reduced to minimum.
But, in the embodiment shown in prior art Figure 1B, still have some shortcomings:
1, each light-emitting component 13,15 still directly carries out the lead-in wire program to connect lead-in wire on its surface, not only still has complex process and the drawback that goes between and come off easily, and the operation that need punch on foot rest and go between, has increased the complexity of technology.
2, the light-emitting area of each light-emitting component 13,15 still has electrode to block, and causes the not good situation of luminous efficiency to take place.
3, in manufacture process, the influence of blocking for the light-emitting area top electrode that reduces first light-emitting component 13 and second light-emitting component 15, need the contraposition problem between each electrode of consideration, thereby increased the complexity of technology, can't realize reducing the purpose of process time and expense.
4, first light-emitting component 13 does not directly contact with second light-emitting component 15, promptly, between first light-emitting component 13 and second light-emitting component 15, there is a different medium, make that the second coloured light L2 needs to enter first light-emitting component 13 via this medium, thereby form the situation of partial reflection, luminous efficiency is reduced.
Summary of the invention
Main purpose of the present invention is to provide a kind of white light emitting element, can effectively solve the technological difficulties that the white light emitting element of above-mentioned prior art faces.
Another object of the present invention is to provide a kind of white light emitting element, wherein first electrode of second light-emitting component can be positioned at approximate same horizontal level with second electrode, therefore helps the carrying out of subsequent technique.
A further object of the present invention is to provide a kind of white light emitting element, and it is by the luminous zone of action of larger area, and it is more even that action current is distributed, therefore the useful life that can effectively improve light-emitting component.
A further object of the present invention is to provide a kind of white light emitting element, each element vertical arrangement wherein, and need not to consider contraposition problem between each electrode, thus can reduce technology difficulty, improve the product percent of pass of light-emitting component.
A further object of the present invention is to provide a kind of white light emitting element, wherein can pile up on the first light-emitting component surface to be provided with a plurality of second light-emitting components that produce different color light separately, and produce the white light source of three-wavelength by smear.
A further object of the present invention is to provide a kind of white light emitting element, the integrated mode that is not limited to fix between each element wherein, thus help the variation of product.
Therefore, in order to achieve the above object, the invention provides a kind of white light emitting element, it mainly comprises: at least one first light-emitting component, comprising first material layer is arranged, the part upper surface of first material layer is provided with second material layer again, and can be formed with the PN interface that can produce first coloured light between first material layer and second material layer naturally, and be provided with first electrode at the part upper surface of first material layer, and second material layer is not provided with second electrode again above the part of first layer of material covers; And at least one second light-emitting component, comprising first material layer is arranged, the lower surface of first material layer can be by a printing opacity tack coat and first light-emitting component the lower surface of first material layer bond mutually, the upper surface of first material layer then is provided with second material layer, can form the PN interface that can produce second coloured light naturally between first material layer and second material layer, and, be provided with at least one extending flute and at least one isolated groove in second light-emitting component, and extending flute and isolated groove can run through second material layer and part first material layer, across isolated groove, part upper surface at second material layer is respectively equipped with first electrode and second electrode, then is provided with the extension electrode that can be electrically connected with first electrode and first material layer in the extending flute.
Description of drawings
Figure 1A shows the structural section figure of prior art white light emitting element;
Figure 1B shows the structural section figure of another white light emitting element of prior art;
Fig. 2 A shows the structural section figure according to the white light emitting element of first embodiment of the invention;
Fig. 2 B shows the vertical view of the white light emitting element shown in Fig. 2 A;
Fig. 3 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 3 B shows the vertical view of the white light emitting element shown in Fig. 3 A;
Fig. 4 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 4 B shows the vertical view of the white light emitting element shown in Fig. 4 A;
Fig. 5 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 5 B shows the vertical view of the white light emitting element shown in Fig. 5 A;
Fig. 6 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 6 B shows the vertical view of the white light emitting element shown in Fig. 6 A;
Fig. 7 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 7 B shows the vertical view of the white light emitting element shown in Fig. 7 A;
Fig. 8 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 8 B shows the vertical view of the white light emitting element shown in Fig. 8 A;
Fig. 9 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Fig. 9 B shows the vertical view of the white light emitting element shown in Fig. 9 A;
Figure 10 A shows the structural section figure according to the white light emitting element of another embodiment of the present invention;
Figure 10 B shows the vertical view of the white light emitting element shown in Figure 10 A;
Embodiment
In order further to understand structure of the present invention, describe the preferred embodiments of the present invention in detail referring now to accompanying drawing.
At first, Fig. 2 A and 2B show structural section figure and the vertical view according to the white light emitting element of first embodiment of the invention respectively.As shown in the figure, white light emitting element 20 of the present invention mainly comprises first light-emitting component 23 and second light-emitting component 25.Wherein, first light-emitting component 23 includes transparent substrates 236, and be provided with first material layer 231 at the upper surface of light-passing board 236, upper surface at first material layer 231 is provided with second material layer 232 again, like this, between first material layer 231 and second material layer 232, can form a PN interface that can produce the first coloured light L1 (as blue light or green glow) naturally.And, in first light-emitting component 23, also be provided with at least one extending flute 239 and at least one isolated groove 237, this extending flute 239 and isolated groove 237 can penetrate second material layer 232 and part first material layer 231, and be provided with first electrode 233 and second electrode 235 across isolated groove 237 at the part upper surface of second material layer 232, and in extending flute 239, be provided with an extension electrode 2395 that can be electrically connected with first electrode 239 and first material layer 231.
In addition, second light-emitting component 25 comprises an electrically-conductive backing plate 256, and the lower surface of electrically-conductive backing plate 256 is provided with first electrode 253, and its upper surface is provided with first material layer 251.Can form a PN interface that can produce the second coloured light L2 (for example gold-tinted) naturally between first material layer 251 and second material layer 252, and the part upper surface of second material layer 252 is provided with second electrode 255 again.
And, also can be provided with a printing opacity insulating barrier 26 at second light-emitting component 25 by the part upper surface that second electrode 255 covers, the height of printing opacity insulating barrier 26 can be similar to second electrode 255, and the surface is provided with first power supply circuits 281 thereon, is provided with second power supply circuits 282 with respect to the upper surface of second electrode 255.
Then, first light-emitting component 23 places the upper surface of second light-emitting component 25 with flip chip (Flip-Chip), second electrode 235 that first electrode 233 of first light-emitting component 23 can be electrically connected first power supply circuits, 281, the first light-emitting components 23 then can be electrically connected second power supply circuits 282.
The second coloured light L2 that second light-emitting component 25 is produced will go out via second material layer 252, printing opacity insulating barrier 26 and 23 transmissions of first light-emitting component of second light-emitting component 25 successively, the exit facet of the first coloured light L1 that is produced with first light-emitting component 23 is almost completely identical, therefore can realize two color light is fully mixed to form the purpose of white light source.
Because the present invention's first light-emitting component 23 has first electrode 233 and second electrode 235 near same level height, therefore can put easily and be connected on first power supply circuits 281 and second power supply circuits 282, and the flip chip that needn't resemble prior art need be used tin ball not of uniform size, therefore helps the carrying out of subsequent technique.And, because follow-up lead-in wire program is all carried out on first power supply circuits 281 and second power supply circuits 282, be not directly on first light-emitting component 23, to carry out, the qualification rate that this not only can be avoided helping improving because of the drawback that the lead-in wire program is damaged light-emitting component product also helps the carrying out of follow-up packaging process.Because first electrode 233 and second electrode 235 of first light-emitting component 23 all are positioned on the same horizontal plane of first light-emitting component 23, not having the situation that stops exiting surface takes place, and first electrode 253 of second light-emitting component 25 is positioned at the below of electrically-conductive backing plate 256, and second electrode, 235 shared second power supply circuits 282 of second electrode 255 and first light-emitting component 23, like this, the electrode position of second light-emitting component 25 just need not to consider the contraposition problem, make that technology obtains simplifying, improve the qualification rate of product.
Certainly, in order to strengthen the electric buffer action of isolated groove 237, isolated groove 237 also can be provided with a separator 2375 with insulation characterisitic.And, the material of first light-emitting component 23 can be nitrogen compound, for example, nitrogen indium gallium (InGaN), gallium nitride (GaN) or aluminum indium gallium nitride (AlGaInN) etc., the material of second light-emitting component 25 can be quaternary compound or ternary compound, for example: arsenic phosphide gallium (GaAsP), aluminum gallium arsenide (AlGaAs) or AlGaInP materials such as (AlGaInP), transparent substrates 236 then can be selected the good material of light transmission, for example: glass, sapphire, carborundum, gallium phosphide, gallium arsenide phosphide, zinc selenide, zinc sulphide, selenium zinc sulphide, a kind of in quartz and the combining form thereof.
Fig. 3 A and 3B show structural section figure and the vertical view according to the white light emitting element of second embodiment of the invention respectively.As shown in the figure, in this embodiment, mainly be that lower surface at the transparent substrates 236 of first light-emitting component 23 of previous embodiment is installed with the 4th light-emitting component 39 by a printing opacity tack coat 26, the 4th light-emitting component 39 can be the nitrogen compound light-emitting component, equally also can include transparent substrates 396, first material layer 391, second material layer 392, first electrode 393 and second electrode 395, thereby produce the 4th coloured light L4 (for example blue or green).
Need execution flip-chip program because the 4th light-emitting component 39 needn't resemble first light-emitting component 23, therefore, its first electrode 393 and second electrode 395 can be made as same level height.
And, also available one the 3rd light-emitting component 37 of second light-emitting component 25 of previous embodiment replaces, the 3rd light-emitting component 37 is the same with second light-emitting component, can be quaternary compound light-emitting component or ternary light-emitting component, having first electrode 373 and second electrode, 375, the second electrodes 375 equally can be common electrode by second electrode 235 of second power supply circuits 282 and first light-emitting component 23 also.The 3rd light-emitting component 37 will produce the 3rd coloured light L3, and for example: ruddiness, gold-tinted or green glow, like this, L1 (blue light), L3 (ruddiness) and L4 (green glow) can be mixed into the white light source with three-wavelength, form more the white light near lamp.
Certainly, in another embodiment of the present invention, first light-emitting component 23 also may be selected to be ternary compound light-emitting component or quaternary compound light-emitting component, produce the L1 of corresponding green glow, and the 4th light-emitting component 39 is designed to blue light emitting element (L4) equally, the 3rd light-emitting component 37 is similarly red light-emitting element (L3), and like this, L1 (green glow), L3 (ruddiness) and L4 (blue light) can reach the white light source with three-wavelength equally.
In addition, Fig. 4 A and 4B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, in this embodiment, mainly be that upper surface at the 3rd light-emitting component (or second light-emitting component) 47 piles up and is provided with a plurality of other light-emitting components, an A light-emitting component (first light-emitting component) the 23 and the one B light-emitting component (the 3rd light-emitting component or the 4th light-emitting component) 49 for example.Wherein, the one B light-emitting component 49 is the same with aforesaid first light-emitting component, at least include transparent substrates 496, isolated groove 497, extending flute 499, extension electrode 4995, first electrode 493 and second electrode 495, and be fixedly arranged on two different sides of the 3rd light-emitting component 47 upper surfaces in the mode of flip-chip.Simultaneously, in the 3rd light-emitting component 47, lower surface at electrically-conductive backing plate 476 is provided with printing opacity insulating barrier 46, and the part upper surface that is not covered by printing opacity insulating barrier 46 becomes exposed area 465, be respectively equipped with first power supply circuits 481 and second power supply circuits 482 in the appropriate location of exposed area 465, and on exposed area 465, be provided with second electrode 475 of the 3rd light-emitting component 47.
When an A light-emitting component (first light-emitting component) the 23 and the one B light-emitting component (the 4th light-emitting component) 49 is fixedly arranged on the upper surface of the 3rd light-emitting component 47 with flip chip, first electrode 233 of the one A light-emitting component 23 is electrically connected with second power supply circuits 482, first electrode 493 of the one B light-emitting component 49 is electrically connected with first power supply circuits 481, and second electrode 235,495 of an A light-emitting component 23 and a B light-emitting component 49 is electrically connected with second electrode 475 of the 3rd light-emitting component 47 simultaneously.Like this, when operating current is done the time spent, the 4th coloured light L4 (green glow) that the first coloured light L1 (blue light) that an A light-emitting component 23 is produced, the 3rd coloured light L3 (ruddiness) that the 3rd light-emitting component 47 is produced and a B light-emitting component 49 are produced but smear is the white light source with three-wavelength.
And, if the electrically-conductive backing plate of the 3rd light-emitting component 47 476 make by light transmissive material, for example, gallium phosphide (GaP), the lower surface of electrically-conductive backing plate 476 also can be provided with reflector layer 478, reflexes to correct emergent light position with the 3rd coloured light L3 that will throw so far, to increase luminosity.
Embodiments of the invention show the white light emitting element with three-wavelength, and the first coloured light L1 is identical with the position of the part emergent light of the 4th coloured light L4 with the 3rd coloured light L3, thereby produce the long and uniform white light source of each coloured light colour mixture of an all-wave.Certainly, a B light-emitting component 49 can be nitrogen compound light-emitting component, Four Modernizations compound light-emitting component or three compound light-emitting elements, and these all can produce green glow L4 equally.
In another embodiment, if a B light-emitting component 49 is formed by quaternary compound or ternary compound, and the substrate that can produce the 3rd light-emitting component of the 3rd coloured light L3 is changed to transparent substrates 496, for example: gallium phosphide (GaP) etc., and the 3rd coloured light L3 that is produced can be designed to a ruddiness, the gold-tinted that the blue light of the first coloured light L1 and the second coloured light L2 produce of arranging in pairs or groups can smear be the white light source with three-wavelength equally.
Fig. 5 A and 5B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, the difference of embodiment shown in itself and Fig. 4 A is, the 3rd light-emitting component (or second light-emitting component) 57 is a bearing substrate with first light-emitting component 23 and the 4th light-emitting component 49, therefore can remove original electrically-conductive backing plate (476) in advance, and be provided with reflector layer 578 at the lower surface of first material layer 571, can reflect the 3rd coloured light L3 equally to increase luminosity.Second electrode (475) of the 3rd light-emitting component originally also can be designed to the 3rd power supply circuits 583, and can be electrically connected with second electrode 235 of first light-emitting component 23, second electrode 495 of the 4th light-emitting component 49 and second electrode 575 of second light-emitting component 57 simultaneously.
Certainly, in different embodiment, first light-emitting component 23, the 3rd light-emitting component (or second light-emitting component) the 57 and the 4th light-emitting component 49 all can be by a kind of formation the in nitrogen compound light-emitting component, quaternary compound light-emitting component or the ternary compound light-emitting component.
Embodiments of the invention show the white light emitting element with three-wavelength, and the first coloured light L1 is identical with the exiting surface of the 3rd coloured light L3 with the 4th coloured light L4, thereby produce the long and uniform white light source of each coloured light colour mixture of an all-wave.
Fig. 6 A and 6B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, in this embodiment, first light-emitting component 63 and second light-emitting component 65 is stacked by vertical mode respectively, and be installed with light transmission conductive layer 637 at second material layer, 632 upper surfaces of first light-emitting component 63, and be installed with metal salient point tack coat 66 or conduction tack coat at the part upper surface of light transmission conductive layer 637, this metal salient point tack coat 66 is attached to the part upper surface of light transmission conductive layer 637 with flip chip, thereby makes second material layer 652 of second light-emitting component 65 be electrically connected with light transmission conductive layer 637.Part upper surface in light transmission conductive layer 637 is provided with second electrode 635, and this second electrode 635 is shared second electrodes of first light-emitting component 63 and second light-emitting component 65, thereby can reduce the lead-in wire number of times, reduces technology difficulty, time and cost.
In this embodiment, can remove the substrate of second light-emitting component 65, and first electrode 653 of second light-emitting component 65 directly is bonded to the lower surface of first material layer 651, can reduce the volume of white light emitting element thus.
Because first light-emitting component 63 does not pile up with second light-emitting component 65 mutually with flip chip, need not to consider especially the relative level height of first electrode 633 and second electrode 635, therefore, in this embodiment, first electrode 633 can be located at the upper surface of first material layer, 631 part exposed area.And, because the transparent substrates 636 of first light-emitting component 63 has light transmission, second light-emitting component 65 of arranging in pairs or groups again removes original substrate of extinction, therefore, the first coloured light L1 (as blue light) that first light-emitting component 63 produces and the second coloured light L2 (as gold-tinted) two surface projections up and down, and separately smear producing white light source, thereby enlarge the application form of white-light luminescent component.
In addition, Fig. 7 A and 7B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, this embodiment is the distortion of the embodiment shown in Fig. 3 A, first light-emitting component (or the 4th light-emitting component) 63 is fixedly arranged on the lower surface of second light-emitting component (or the 3rd light-emitting component) 75 by printing opacity tack coat 76, and among the embodiment shown in Fig. 3 A, the 3rd light-emitting component (37) is replaced by a power supply substrate 78.Wherein, the upper surface of power supply substrate 78 is respectively equipped with first power supply circuits 781 and second power supply circuits 782, and first electrode 753 of second light-emitting component 75 can be electrically connected with first power supply circuits 781 by the flip-chip mode, and second power supply circuits 755 of second light-emitting component 75 are electrically connected with second power supply circuits 782 in the mode of flip-chip equally.
Fig. 8 A and Fig. 8 B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, the lower surface of first light-emitting component (or the 4th light-emitting component) 63 is provided with a plurality of second light-emitting components (the 2nd A light-emitting component) the 75 or the 3rd light-emitting components (the 2nd B light-emitting component) 87, and be provided with first power supply circuits 781 of mutual isolation at the upper surface of power supply substrate 78, second power supply circuits 782, the 3rd power supply circuits 783 and the 4th power supply circuits 784, the 2nd A light-emitting component 75 and the 2nd B light-emitting component 87 are fixedly arranged on the upper surface of power supply substrate 78 respectively in the mode of flip-chip, and its first electrode 753 (873) and second electrode 755 (875) are electrically connected on corresponding power supply circuits 781～784 respectively, thereby can produce the white light source with three-wavelength equally.
In like manner, Fig. 9 A and 9B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, present embodiment is the distortion of above-mentioned Fig. 7 A and the embodiment shown in Fig. 8 A, on power supply substrate 78, be provided with second light-emitting component (or the 3rd light-emitting component) 75, and be installed with first light-emitting component 83 and the 4th light-emitting component 39 on second light-emitting component 75 more respectively, can realize having the white light source of three-wavelength equally.
At last, Figure 10 A and 10B show structural section figure and the vertical view according to the white light emitting element of further embodiment of this invention respectively.As shown in the figure, present embodiment is the distortion of the embodiment shown in above-mentioned Fig. 6 A, and its difference is, changes the first original light-emitting component 63 first light-emitting component 93 of flip-chip type into, and is fixedly arranged on the power supply substrate 78 in the mode of flip-chip.And, the also available extension insulating barrier 938 of the isolated groove of the foregoing description (2375) replaces, extend insulating barrier 938 and 931 electrical connections of first material layer, this can make first electrode 933 and second electrode 935 have approximate same level height equally, thereby helps the carrying out of flip-chip program.
Certainly, though all be in each accompanying drawing of the present invention and aforesaid embodiment as first material layer with N type compound, with P type compound as second material layer, but in different embodiment, first material layer also can be designed to P type compound, second material layer is a N type compound, and this can realize purpose of the present invention equally.
In sum, the present invention relates to a kind of light-emitting component, especially relate to and a kind ofly can the immixture by a plurality of complementary coloured light produce the white light emitting element of white light source, thereby help the carrying out of subsequent technique and the raising of product percent of pass.
Top description is preferred embodiment of the present invention, be not to be used for limiting practical range of the present invention, the various modifications and variations of being done according to the described shape of the present patent application claim, structure, feature and spirit all should be included in the patent claim of the present invention.
Claims (48)
1, a kind of white light emitting element is characterized in that, includes:
At least one first light-emitting component, include first material layer, the part upper surface of first material layer is provided with second material layer again, and the PN interface that natural formation can produce first coloured light between first material layer and second material layer, and, part upper surface at first material layer is provided with first electrode, is not provided with second electrode again by the part upper surface of first layer of material covers at second material layer; And
At least one second light-emitting component, include first material layer, the lower surface of second material layer can be by a printing opacity tack coat and this first light-emitting component the lower surface of first material layer bond mutually, and the upper surface of first material layer is installed with second material layer, can form the PN interface that produces second coloured light between first material layer and second material layer naturally, and, be provided with at least one extending flute and at least one isolated groove in second light-emitting component, and extending flute and isolated groove can run through second material layer and part first material layer, be respectively equipped with first electrode and second electrode across isolated groove and at the part upper surface of second material layer, and be provided with the extension electrode that can be electrically connected in the extending flute with first electrode and first material layer.
2, according to the described white light emitting element of claim 1, it is characterized in that, also include a power supply substrate, surface thereof is respectively equipped with first power supply circuits and second power supply circuits, first power supply circuits can be electrically connected with first electrode of this second light-emitting component, and second power supply circuits are electrically connected with second electrode of this second light-emitting component.
3, according to the described white light emitting element of claim 1, it is characterized in that, also comprise a transparent substrates, be fixedly arranged on the lower surface of first material layer of first light-emitting component, the lower surface via transparent substrates connects this printing opacity tack coat again.
According to the described white light emitting element of claim 1, it is characterized in that 4, this second light-emitting component can be made by nitrogen compound, quaternary compound and ternary compound a kind of material wherein.
According to the described white light emitting element of claim 1, it is characterized in that 5, this first light-emitting component can be made by the nitrogen compound material.
According to the described white light emitting element of claim 2, it is characterized in that 6, this power supply substrate can be that good heat dissipation effect and the thermal coefficient of expansion material close with this second light-emitting component made.
According to the described white light emitting element of claim 2, it is characterized in that 7, this second light-emitting component is fixedly arranged on first power supply circuits and second power supply circuits of this power supply substrate with flip chip.
According to the described white light emitting element of claim 1, it is characterized in that 8, first electrode of this second light-emitting component and second electrode have approximate same level height.
According to the described white light emitting element of claim 1, it is characterized in that 9, this first coloured light and second coloured light are complementary light.
According to the described white light emitting element of claim 1, it is characterized in that 10, this first coloured light is blue light, and this second coloured light is gold-tinted.
According to the described white light emitting element of claim 1, it is characterized in that 11, this isolated groove also can be designed to one and extend insulating barrier, this extension insulating barrier is located in this extending flute, and is provided with this extension electrode again between the extension insulating barrier.
12, according to the described white light emitting element of claim 1, it is characterized in that, comprise that also one can produce the 3rd light-emitting component of the 3rd coloured light, its lower surface is provided with first electrode, and the part upper surface is provided with the printing opacity insulating barrier, the upper surface of printing opacity insulating barrier can be provided with first power supply circuits that can be electrically connected with first electrode of this second light-emitting component again, and, its upper surface is not provided with second electrode by the part position that this printing opacity insulating barrier covers, and second electrode can be electrically connected with second electrode of this second light-emitting component.
13, according to the described white light emitting element of claim 12, it is characterized in that, this second light-emitting component also includes a transparent substrates, be located between the lower surface and this printing opacity tack coat of first material layer of this second light-emitting component, and, second electrode top of the 3rd light-emitting component also can be provided with second power supply circuits, is electrically connected on second electrode of this second light-emitting component by second connecting circuit.
According to the described white light emitting element of claim 12, it is characterized in that 14, this first coloured light is green glow, second coloured light is blue light, and the 3rd coloured light is ruddiness.
According to the described white light emitting element of claim 12, it is characterized in that 15, this first coloured light is blue light, second coloured light is green glow, and the 3rd coloured light is ruddiness.
According to the described white light emitting element of claim 1, it is characterized in that 16, the lower surface of this first light-emitting component can be installed with a plurality of second light-emitting components.
17, according to the described white light emitting element of claim 16, it is characterized in that, this second light-emitting component is the best with two, and may be defined as the 2nd A light-emitting component and the 2nd B light-emitting component, be fixedly arranged on the different dual-sides of the lower surface of this first light-emitting component respectively, and the 2nd A light-emitting component can produce this second coloured light, and the 2nd B light-emitting component can produce the 3rd coloured light.
According to the described white light emitting element of claim 17, it is characterized in that 18, this first coloured light is blue light, second coloured light is ruddiness, the 3rd coloured light then may be selected to be gold-tinted and green glow one of them.
19, according to the described white light emitting element of claim 17, it is characterized in that, also comprise a power supply substrate, the upper surface of power supply substrate be provided with first power supply circuits that can be electrically connected, second power supply circuits that can be electrically connected, the 3rd power supply circuits that can be electrically connected with first electrode of the 2nd B light-emitting component with second electrode of the 2nd A light-emitting component with first electrode of the 2nd A light-emitting component, can the 2nd B light-emitting component the 4th power supply circuits of second electrode electrical connection.
According to the described white light emitting element of claim 1, it is characterized in that 20, the lower surface of this second light-emitting component can be installed with a plurality of first light-emitting components.
21, according to the described white light emitting element of claim 20, it is characterized in that, this first light-emitting component is preferable with two, and may be defined as an A light-emitting component and a B light-emitting component, be fixedly arranged on the different dual-sides of this second light-emitting component lower surface respectively, and an A light-emitting component can produce first coloured light, and a B element can produce the 4th coloured light.
According to the described white light emitting element of claim 21, it is characterized in that 22, this first coloured light is blue light, second coloured light is ruddiness, and the 3rd coloured light is green glow.
According to the described white light emitting element of claim 21, it is characterized in that 23, this first coloured light and second coloured light can be blue light all, and the 3rd coloured light is gold-tinted.
According to the described white light emitting element of claim 1, it is characterized in that 24, the upper surface of this second light-emitting component also is provided with a reflector layer.
25, a kind of white light emitting element is characterized in that, includes:
At least one first light-emitting component, include a transparent substrates, upper surface at transparent substrates is provided with first material layer, the upper surface of first material layer is provided with second material layer again, and the PN interface that natural formation can produce first coloured light between first material layer and second material layer, and, also be provided with at least one extending flute and at least one isolated groove in first light-emitting component, and extending flute and isolated groove can run through second material layer and part first material layer, be respectively equipped with first electrode and second electrode across isolated groove and at the part upper surface of second material layer, and be provided with the extension electrode that can be electrically connected in the extending flute with first electrode and first material layer, and the lower surface of transparent substrates also is provided with light transmission conductive layer; And
At least one second light-emitting component, include first material layer, the lower surface of first material layer can bond mutually by at least one conduction bonding salient point and this light transmission conductive layer, this printing opacity conductive salient point can bond mutually with the lower surface of transparent substrates, and the upper surface of this first material layer is installed with second material layer, natural formation can produce the PN interface of second coloured light between first material layer and second material layer, and, the part upper surface of second material layer is provided with first electrode, and is provided with second electrode on this light transmission conductive layer.
26, according to the described white light emitting element of claim 25, it is characterized in that, also comprise a power supply substrate, surface thereof is respectively equipped with first power supply circuits and second power supply circuits, first power supply circuits can be electrically connected with first electrode of this first light-emitting component, and second power supply circuits then are electrically connected with second electrode of this first light-emitting component.
According to the described white light emitting element of claim 25, it is characterized in that 27, this conduction bonding salient point also can be a conduction tack coat.
According to the described white light emitting element of claim 25, it is characterized in that 28, this first light-emitting component and this second light-emitting component can be respectively one of them material of nitrogen compound, quaternary compound and ternary compound and make.
According to the described white light emitting element of claim 26, it is characterized in that 29, this first light-emitting component is fixedly arranged on first power supply circuits and the two or two power supply circuits of this power supply substrate with flip chip.
According to the described white light emitting element of claim 25, it is characterized in that 30, this first coloured light is blue light and this second coloured light is gold-tinted.
According to the described white light emitting element of claim 25, it is characterized in that 31, this isolated groove also can be designed to one and extend insulating barrier, this extension insulating barrier is located in this extending flute, and is provided with this extension electrode again between the extension insulating barrier.
32, a kind of white light emitting element, its feature in, include:
At least one first light-emitting component, include first material layer, the part upper surface of first material layer is provided with second material layer again, and be formed with the PN interface that can produce first coloured light between first material layer and second material layer naturally, and, part upper surface at first material layer is provided with first electrode, is not provided with second electrode again by the part upper surface of first layer of material covers at second material layer, also is provided with a light transmission conductive layer at the upper surface of second electrode; And
At least one second light-emitting component, include first material layer, the lower surface of first material layer can bond mutually by at least one conduction bonding salient point and this light transmission conductive layer, this printing opacity conductive salient point can mutually combine with the lower surface of transparent substrates, and the upper surface of this first material layer is installed with second material layer, natural formation can produce the PN interface of second coloured light between first material layer and second material layer, and, part upper surface at second material layer is provided with first electrode, and is provided with second electrode on this light transmission conductive layer.
According to the described white light emitting element of claim 32, it is characterized in that 33, this conduction bonding salient point also can be a conduction tack coat.
According to the described white light emitting element of claim 32, it is characterized in that 34, this first coloured light is blue light, and this second coloured light is gold-tinted.
35, a kind of white light emitting element is characterized in that, includes:
At least one first light-emitting component, include first material layer, the part upper surface of first material layer is provided with second material layer again, and be formed with the PN interface that can produce first coloured light between first material layer and second material layer naturally, and, be provided with at least one extending flute and at least one isolated groove in first light-emitting component, and extending flute and isolated groove can run through second material layer and part first material layer, be respectively equipped with first electrode and second electrode across isolated groove and at the part upper surface of second material layer, and be provided with the extension electrode that can be electrically connected in the extending flute with first electrode and first material layer; And
At least one second light-emitting component, include first material layer, the upper surface of first material layer is provided with second material layer again, and the PN interface that natural formation can produce second coloured light between first material layer and second material layer, and, lower surface at first material layer is provided with first electrode, and be provided with a printing opacity insulating barrier at the part upper surface of first material layer, the upper surface of printing opacity insulating barrier is provided with first power supply circuits that can be electrically connected with first electrode of this first light-emitting component again, the first material layer upper surface is not provided with second electrode by the part position that this printing opacity insulating barrier covers, and second electrode can be electrically connected with second electrode of this first light-emitting component.
36, according to the described white light emitting element of claim 35, it is characterized in that, also include a transparent substrates, be fixedly arranged on the lower surface of first material layer of this first light-emitting component.
37, according to the described white light emitting element of claim 35, it is characterized in that, also include an electrically-conductive backing plate, be fixedly arranged between the lower surface and its second electrode of first material layer of second light-emitting component.
According to the described white light emitting element of claim 35, it is characterized in that 38, this first light-emitting component can be made by one of them material of nitrogen compound, quaternary compound and ternary compound.
According to the described white light emitting element of claim 35, it is characterized in that 39, this first light-emitting component is fixedly arranged on the upper surface of this second light-emitting component with flip chip.
According to the described white light emitting element of claim 35, it is characterized in that 40, first electrode of this first light-emitting component and second electrode have approximate same level height.
According to the described white light emitting element of claim 35, it is characterized in that 41, this first coloured light and second coloured light are complementary light.
According to the described white light emitting element of claim 35, it is characterized in that 42, this first coloured light is blue light, and this second coloured light is gold-tinted.
According to the described white light emitting element of claim 35, it is characterized in that 43, this isolated groove also can be designed to one and extend insulating barrier, this extension insulating barrier is provided with in this extending flute, and is provided with this extension electrode again between the extension insulating barrier.
According to the described white light emitting element of claim 35, it is characterized in that 44, the lower surface of this second light-emitting component also is provided with a reflector layer.
According to the described white light emitting element of claim 35, it is characterized in that 45, the upper surface of this second light-emitting component also is installed with a plurality of first light-emitting components.
46, according to the described white light emitting element of claim 45, it is characterized in that, this first light-emitting component is the best with two, and may be defined as an A light-emitting component and a B light-emitting component, be fixedly arranged on the different dual-sides of the upper surface of this second light-emitting component respectively, and an A light-emitting component can produce this first coloured light, and a B light-emitting component can produce the 4th coloured light.
According to the described white light emitting element of claim 46, it is characterized in that 47, this first coloured light is blue light, second coloured light is ruddiness, and the 4th coloured light is green glow.
According to the described white light emitting element of claim 46, it is characterized in that 48, this first coloured light is blue light, second coloured light is gold-tinted, and the 4th coloured light is ruddiness.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100572736A CN100546055C (en) | 2004-08-30 | 2004-08-30 | white light emitting element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100572736A CN100546055C (en) | 2004-08-30 | 2004-08-30 | white light emitting element |
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| CN1588654A true CN1588654A (en) | 2005-03-02 |
| CN100546055C CN100546055C (en) | 2009-09-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414726C (en) * | 2005-05-19 | 2008-08-27 | 沈育浓 | LED chip package and packaging method thereof |
| CN104538523A (en) * | 2015-01-09 | 2015-04-22 | 南京大学 | Semiconductor device for improving current expanding |
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2004
- 2004-08-30 CN CNB2004100572736A patent/CN100546055C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414726C (en) * | 2005-05-19 | 2008-08-27 | 沈育浓 | LED chip package and packaging method thereof |
| CN104538523A (en) * | 2015-01-09 | 2015-04-22 | 南京大学 | Semiconductor device for improving current expanding |
| CN104538523B (en) * | 2015-01-09 | 2018-02-02 | 南京大学 | A kind of semiconductor devices for improving current expansion |
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| CN100546055C (en) | 2009-09-30 |
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