CN201904337U - Luminescent device with integrated circuit - Google Patents
Luminescent device with integrated circuit Download PDFInfo
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- CN201904337U CN201904337U CN2010206511031U CN201020651103U CN201904337U CN 201904337 U CN201904337 U CN 201904337U CN 2010206511031 U CN2010206511031 U CN 2010206511031U CN 201020651103 U CN201020651103 U CN 201020651103U CN 201904337 U CN201904337 U CN 201904337U
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Abstract
The utility model relates to a luminescent device with an integrated circuit, which comprises an LED chip and a substrate, wherein the LED chip includes a positive electrode and a negative electrode, and the substrate is provided with the integrated circuit, a first metal electrode layer, a second metal electrode layer and an electrode layer connecting portion. The integrated circuit is arranged at the lower surface of the substrate, the first metal electrode layer covers the upper surface of the substrate, the second metal electrode layer covers the lower surface of the substrate and is connected with the integrated circuit, and the electrode layer connecting portion penetrates through the upper surface and the lower surface of the substrate and is connected with the first metal electrode layer and the second metal electrode layer. The LED chip is mounted on the substrate reversely, and the positive electrode and the negative electrode of the LED chip are connected with the first metal electrode layer of the substrate. The luminescent device with the integrated circuit is capable of avoiding photoelectrical parasitic effect and is higher in stability.
Description
Technical field
The utility model belongs to the manufacturing field of luminescent device, relates to a kind of luminescent device and manufacture method thereof with integrated circuit.
Background technology
Light-emitting diode (LED) light source has high efficiency, long-life, does not contain the advantage of harmful substances such as Hg.Along with the fast development of LED technology, performances such as the brightness of LED, life-span have all obtained great lifting, make LED application more and more widely, from outdoor lightings such as street lamps to room lightings such as decorative lamps, all use one after another or be replaced with LED as light source.
Flip-chip bonded structure is wherein a kind of encapsulating structure of LED luminescent device, it is in the upside-down mounting mode led chip flip chip bonding to be connected on the substrate, it passes through the encapsulating structure that gold thread makes led chip be electrically connected with the electrode of substrate and has higher reliability and better heat dispersion with respect to traditional, and can also be integrated in some functional circuits on the substrate.See also Fig. 1, publication number is that the Chinese patent application of CN1731592A discloses a kind of flip-chip bonded structure light-emitting diode, it comprises a led chip 1 and a substrate 2, and the upper surface of this substrate 2 is provided with metal level 22, and the upper surface of metal level 22 is provided with salient point array 24.Simultaneously, be provided with an integrated circuit 26 near metal level 22 places on this substrate 2, this led chip 1 is electrically connected with this integrated circuit 26 by the salient point array 24 on this substrate 2.
Because this integrated circuit 26 is integrated in the upper surface of substrate 2, and is nearer with the physical distance of led chip 2, thereby the light radiation of sending because of led chip 1 easily causes a series of photoelectricity ghost effect to influence the stability of whole luminescent device.In addition, the heat that led chip 1 produces is directly transferred in the integrated circuit 26 through the metal level 22 of substrate 2 upper surfaces, has influenced the stability of integrated circuit 26.Moreover the integrated circuit 26 on this substrate 2 is adjacent with led chip 1, and both layouts need be yielded to mutually, has limited the usable area of metal level 22 and integrated circuit 26 on the substrate 2, thereby has limited to the flexibility of design.
The utility model content
The purpose of this utility model is to overcome shortcoming of the prior art with not enough, and a kind of luminescent device with integrated circuit with high stability of avoiding the photoelectricity ghost effect is provided.
A kind of luminescent device with integrated circuit comprises led chip and substrate.This led chip can be single-chip, multi-chip modules or the chip with a plurality of unit etc., and it has P electrode and N electrode led chip.This substrate is provided with integrated circuit, first metal electrode layer, second metal electrode layer and electrode layer connecting portion.This integrated circuit is arranged on the lower surface of this substrate, this first metal electrode layer covers the upper surface of this substrate, this second metal electrode layer covers the lower surface of this substrate and is connected with integrated circuit, and this electrode layer connecting portion runs through this substrate top surface and is connected this first electrode layer and the second electrode lay with lower surface.This led chip upside-down mounting is on this substrate, and the P electrode of led chip and N electrode are connected with first metal electrode layer on this substrate respectively.
With respect to prior art, the utility model is integrated in integrated circuit the lower surface of substrate, led chip is electrically connected with integrated circuit by first metal electrode layer, electrode layer connecting portion and second metal electrode layer, thereby led chip and integrated circuit structure have been separated with substrate, avoid led chip and integrated circuit owing to the adjacent a series of photoelectricity ghost effects that too closely cause, improved the stability of whole luminescent device.
In order to understand the utility model more clearly, set forth embodiment of the present utility model below with reference to description of drawings.
Description of drawings
Fig. 1 is the structural representation of prior art flip-chip bonded structure light-emitting diode.
Fig. 2 is the structural representation of embodiment 1 that the utlity model has the luminescent device of integrated circuit.
Fig. 3 is the structural representation of embodiment 2 that the utlity model has the luminescent device of integrated circuit.
Fig. 4 is the structural representation of embodiment 3 that the utlity model has the luminescent device of integrated circuit.
Embodiment
Embodiment 1:
See also Fig. 2, it is the structural representation of embodiment 1 that the utlity model has the luminescent device of integrated circuit.This luminescent device comprises a led chip 101 and a substrate 201.
This led chip 101 has P and two electrodes of N respectively, and electrode is provided with metal pad 205.
This substrate 201 is specially a silicon substrate.One integrated circuit 301 is integrated in the lower surface of this substrate 201.On the substrate 201 of these integrated circuit 301 both sides, has the through hole 208 that runs through these substrate 201 upper and lower surfaces respectively.One insulating barrier 202 covers the inwall of upper surface, lower surface and the through hole 208 of this substrate 201.First metal electrode layer 203 in order to two mutually insulateds being electrically connected with two electrodes of led chip 101 is positioned at integrated circuit 301 both sides, and covers insulating barrier 202 surfaces of these substrate 201 upper surfaces.Second metal electrode layer 207 of two mutually insulateds is positioned at integrated circuit 301 both sides, and covers insulating barrier 202 surfaces of these substrate 201 lower surfaces, is electrically connected with integrated circuit 301 respectively.Be filled with electrode layer connecting portion 206 in this through hole 208, first metal electrode layer 203 and second metal electrode layer 207 that are positioned at these integrated circuit 301 the same sides are electrically connected by this electrode layer connecting portion 206.The surface of this first metal electrode layer 203 is provided with metal salient point 204.
These led chip 101 upside-down mountings are on this substrate 201, and the metal pad 205 on the P of led chip 101, the N electrode engages with the metal salient point 204 on first metal electrode layer, 203 surfaces respectively.
The material of this insulating barrier 202 can be selected insulating material such as silicon dioxide, silicon nitride, Parylene, polyimides PI film or other polymer.
The material of this first metal electrode layer 203 and second metal electrode layer 207 can be selected aluminium or other metal materials, alloy or multiple layer metal.
Multilayer material or alloy that the material of this metal salient point 204 and metal pad 205 can be selected single metal material such as lead, tin, gold, silver, nickel or copper or be made up of above-mentioned single metal material.
The material of this electrode layer connecting portion 206 can be selected tungsten, aluminium, copper, metal materials such as gold.
This integrated circuit 301 specifically is a kind of circuit in two groups of Zener diodes, electrostatic discharge protective circuit, power driving circuit, rectification circuit, light adjusting circuit, the load monitoring diagnostic circuit or the combination of multiple circuit.
Below describe the manufacturing step of the luminescent device of the utility model embodiment 1 in detail:
Step S1: make led chip 101.Particularly, growth has the extension disk of nitride multilayer gallium on Sapphire Substrate, through sequence of process steps such as photoetching, etching, layer metal deposition and passivation layer protections, forms P electrode and N electrode on led chip, and the metal salient point on the electrode 205.This disk cuts into the led chip 101 of simple grain behind grinding and polishing.
Step S2: the lower surface at substrate 201 forms integrated circuit 301.Particularly, by production process of semiconductor, as extension, oxidation, photoetching, the injection of burn into ion, diffusion, annealing etc., at the lower surface formation integrated circuit 301 of substrate 201.
Step S3: integrated circuit 301 both sides at substrate 201 form the through hole 208 that runs through substrate 201 upper and lower surfaces.Particularly, form this through hole 208 by modes such as wet etching or dry etching or laser via.
Step S4: form insulating barrier 202 at the inwall of through hole 208 and upper surface, the lower surface of substrate 201.Particularly, form a layer insulating by chemical vapour deposition technique or physical deposition method at through hole 208 inwalls, and then form insulating barrier respectively at the upper surface and the lower surface of substrate 201, wherein, the insulating barrier of these substrate 201 lower surfaces is provided with opening.
Step S5: in through hole 208, form electrode layer connecting portion 206.Particularly, by electrochemical deposition (electroplate, ECD) or chemical vapor deposition (CVD) form through hole inner electrode layer connecting portion.
Step S6: insulating barrier 202 surfaces on substrate 201 upper and lower surfaces form first metal electrode layer 203 and second metal electrode layer 207, and second metal electrode layer 207 is connected with integrated circuit 301 by the insulating barrier opening of substrate 201 lower surfaces.Particularly, by electron beam evaporation, sputter or plating, cooperate photoetching and etching process to form this first metal electrode layer 203 and second metal electrode layer 207 again.
Step S7: the upper surface at first metal electrode layer 203 forms metal salient point 204, particularly, forms metal salient point 204 by electro-plating method at the upper surface at first metal electrode layer 203.
Step S8: the upper surface that led chip 101 flip chip bondings is connected on substrate 201.Flip chip bonding equipment by automation is connected on led chip 101 flip chip bondings one by one on the surface of substrate 201, the flip chip bonding process is actual to be metal salient point 204 with the bonding process of the metal pad 205 of the P electrode of led chip 101 and N electrode, can adopt mode that Reflow Soldering, wave-soldering, hot pressing welding, ultrasonic wire bonding method, thermosonic bonding connect or decide technology with adding hyperacoustic nation after the heating.
After finishing above step, simple grain crystal grain is taken off from the medium disk, promptly is a luminescent device product with integrated circuit.
Embodiment 2:
See also Fig. 3, it is the structural representation of embodiment 2 that the utlity model has the luminescent device of integrated circuit.This luminescent device comprises a led chip 101 and a substrate 401.
This led chip 101 has P and two electrodes of N respectively, and electrode is provided with metal pad 205.
This substrate 401 specifically is made up of a dielectric substrate 401a and the silicon thin film 401b of stacked setting.This integrated circuit 301 is integrated on the silicon thin film 401b.On the substrate 201 of these integrated circuit 301 both sides, has the through hole 208 that runs through these substrate 201 upper and lower surfaces respectively.First metal electrode layer 203 in order to two mutually insulateds being electrically connected with two electrodes of led chip 101 is positioned at integrated circuit 301 both sides, and covers the dielectric substrate 401a surface of these substrate 201 upper surfaces.Second metal electrode layer 207 of two mutually insulateds is positioned at integrated circuit 301 both sides, and covers the silicon thin film 401b surface of these substrate 201 lower surfaces, and is electrically connected with integrated circuit 301 respectively.Be filled with electrode layer connecting portion 206 in this through hole 208, first metal electrode layer 203 and second metal electrode layer 207 that are positioned at these integrated circuit 301 the same sides are electrically connected by this electrode layer connecting portion 206.The surface of this first metal electrode layer 203 is provided with metal salient point 204.
These led chip 101 upside-down mountings are on this substrate 201, and the metal pad 205 on the P of led chip 101, the N electrode engages with the metal salient point 204 on first metal electrode layer, 203 surfaces respectively.
The manufacturing step of the manufacturing step of the luminescent device of the utility model embodiment 2 and embodiment 1 is roughly the same, and its difference only is: the step of having saved step 4 formation insulating barrier than embodiment 1.
Embodiment 3:
See also Fig. 4, it is the structural representation of embodiment 3 that the utlity model has the luminescent device of integrated circuit.This luminescent device comprises a led chip 101 and a substrate 201.
This led chip 101 has P and two electrodes of N respectively, and electrode is provided with metal pad 205.
This substrate 201 is specially a silicon substrate.One integrated circuit 301 is integrated in the lower surface of this substrate 201.One insulating barrier 202 covers upper surface, lower surface and the sidewall of this substrate 201.First metal electrode layer 203 in order to two mutually insulateds being electrically connected with two electrodes of led chip 101 is positioned at integrated circuit 301 both sides, and covers insulating barrier 202 surfaces of these substrate 201 upper surfaces.Second metal electrode layer 207 of two mutually insulateds is positioned at integrated circuit 301 both sides, and covers insulating barrier 202 surfaces of these substrate 201 lower surfaces, and is electrically connected with integrated circuit 301 respectively.Insulating barrier 202 surface coverage of these substrate 201 sidewalls have electrode layer connecting portion 206, and first metal electrode layer 203 and second metal electrode layer 207 that are positioned at these integrated circuit 301 the same sides are electrically connected by this electrode layer connecting portion 206.The surface of this first metal electrode layer 203 is provided with metal salient point 204.
These led chip 101 upside-down mountings are on this substrate 201, and the metal pad 205 on the P of led chip 101, the N electrode engages with the metal salient point 204 on first metal electrode layer, 203 surfaces respectively.
Below describe the manufacturing step of the luminescent device of the utility model embodiment 3 in detail:
Step S1: make led chip 101 and on led chip, form P electrode and N electrode;
Step S2: the lower surface at substrate 201 forms integrated circuit 301;
Step S3: upper surface, lower surface and sidewall at substrate 201 form insulating barrier 202, and wherein, the insulating barrier 202 of these substrate 201 lower surfaces is provided with opening.；
Step S4: insulating barrier 202 surfaces on substrate 201 upper and lower surfaces form first metal electrode layer 203 and second metal electrode layer 207, and second metal electrode layer 207 is connected with integrated circuit 301 by the insulating barrier opening of substrate 201 lower surfaces;
Step S5: insulating barrier 202 surfaces at the sidewall of substrate 201 form electrode layer connecting portions 208;
Step S6 forms metal salient point 204 at the upper surface of first metal electrode layer 203;
Step S7: the upper surface that led chip 101 flip chip bondings is connected on substrate 201.
With respect to prior art, the utility model is integrated in integrated circuit the lower surface of substrate, led chip is electrically connected with integrated circuit by first metal electrode layer, electrode layer connecting portion and second metal electrode layer, thereby led chip and integrated circuit structure have been separated with substrate, avoid led chip and integrated circuit owing to the adjacent a series of photoelectricity ghost effects that too closely cause, improved the stability of whole luminescent device.Further, led chip mainly dispels the heat by the electrode layer connecting portion in the luminescent device of the present utility model, has reduced the heat that is transmitted to integrated circuit by led chip.In addition, the heat that integrated circuit itself is produced then can directly dispel the heat by second metal electrode layer, provide two heat dissipation path to give led chip and integrated circuit so respectively, improved the heat-sinking capability of this luminescent device integral body, strengthened the reliability of device.Moreover, led chip links to each other with integrated circuit by the electrode layer connecting portion, first metal electrode layer that directly connects the led chip electrode and second metal electrode layer that directly is connected integrated circuit are separately positioned on the upper and lower surface of substrate, the layout of this first metal electrode layer and second metal electrode layer does not need to yield to mutually except that through hole, increase the usable area of substrate metal wiring and integrated circuit, improved the flexibility of design.
The utility model is not limited to above-mentioned execution mode, if various changes of the present utility model or distortion are not broken away from spirit and scope of the present utility model, if these changes and distortion belong within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and distortion.
Claims (7)
1. the luminescent device with integrated circuit comprises
Led chip, it has P electrode and N electrode;
Substrate, it is provided with integrated circuit, first metal electrode layer, second metal electrode layer and electrode layer connecting portion; This integrated circuit is arranged on the lower surface of this substrate, this first metal electrode layer covers the upper surface of this substrate, this second metal electrode layer covers the lower surface of this substrate and is connected with integrated circuit, and this electrode layer connecting portion runs through this substrate top surface and is connected this first electrode layer and the second electrode lay with lower surface;
This led chip upside-down mounting is on this substrate, and the P electrode of led chip and N electrode are connected with first metal electrode layer on this substrate respectively.
2. luminescent device according to claim 1 is characterized in that: the both sides of integrated circuit are provided with the through hole that runs through this substrate top surface and lower surface on this substrate, and this electrode layer connecting portion is arranged in this through hole.
3. luminescent device according to claim 2, it is characterized in that: this substrate also comprises an insulating barrier, it covers the inwall of upper surface, lower surface and the through hole of this substrate except that through hole, this first metal electrode layer, second metal electrode layer and electrode layer connecting portion cover this surface of insulating layer, this insulating barrier should be provided with opening at the lower surface of substrate, and this second metal level is connected with integrated circuit by opening.
4. luminescent device according to claim 1, it is characterized in that: this substrate comprises that also one covers the insulating barrier of upper surface, lower surface and the sidewall of this substrate, this first metal electrode layer and second metal electrode layer cover the surface of insulating layer on this upper and lower surface of substrate respectively, and this electrode layer connecting portion covers the surface of insulating layer of this substrate sidewall.
5. luminescent device according to claim 1, it is characterized in that: this substrate is made up of a dielectric substrate and the silicon thin film of stacked setting, this integrated circuit is arranged on the silicon thin film, this first metal electrode layer covers this insulated substrate surface, and this second metal electrode layer covers silicon film surface and is connected with integrated circuit.
6. according to claim 3 or 4 described luminescent devices, it is characterized in that: this substrate is a silicon substrate.
7. luminescent device according to claim 1 is characterized in that: the P electrode and the N electrode of this led chip are provided with metal pad, and the first metal electrode laminar surface of this substrate is provided with metal salient point, and this metal pad engages with this metal salient point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206511031U CN201904337U (en) | 2010-12-09 | 2010-12-09 | Luminescent device with integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206511031U CN201904337U (en) | 2010-12-09 | 2010-12-09 | Luminescent device with integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904337U true CN201904337U (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206511031U Expired - Lifetime CN201904337U (en) | 2010-12-09 | 2010-12-09 | Luminescent device with integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201904337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104037A (en) * | 2010-12-09 | 2011-06-22 | 晶科电子（广州）有限公司 | Luminous device with integrated circuit and manufacturing method thereof |
| CN104393137A (en) * | 2014-09-30 | 2015-03-04 | 厦门市三安光电科技有限公司 | Upside-down mounted luminescent device and manufacturing method thereof |
-
2010
- 2010-12-09 CN CN2010206511031U patent/CN201904337U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104037A (en) * | 2010-12-09 | 2011-06-22 | 晶科电子（广州）有限公司 | Luminous device with integrated circuit and manufacturing method thereof |
| CN102104037B (en) * | 2010-12-09 | 2013-07-31 | 晶科电子（广州）有限公司 | Luminous device with integrated circuit and manufacturing method thereof |
| CN104393137A (en) * | 2014-09-30 | 2015-03-04 | 厦门市三安光电科技有限公司 | Upside-down mounted luminescent device and manufacturing method thereof |
| CN104393137B (en) * | 2014-09-30 | 2017-08-25 | 厦门市三安光电科技有限公司 | A kind of flip-chip light emitting device and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110720 Effective date of abandoning: 20130731 |
|
| RGAV | Abandon patent right to avoid regrant |