CN214672607U - Two-channel light-adjustable flexible facula-free lamp strip - Google Patents
Two-channel light-adjustable flexible facula-free lamp strip Download PDFInfo
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- CN214672607U CN214672607U CN202121008301.0U CN202121008301U CN214672607U CN 214672607 U CN214672607 U CN 214672607U CN 202121008301 U CN202121008301 U CN 202121008301U CN 214672607 U CN214672607 U CN 214672607U
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Abstract
The utility model discloses a flexible no light spot lamp area that two passageways can be adjusted luminance, include: the LED blue light flip chip comprises a plurality of LED blue light flip chip groups, a white light chip group and a long-strip-shaped FPCB flexible substrate, wherein the FPCB flexible substrate forms a circuit layer of positive and negative two-way main lines through a prefabricated circuit, the main line interval structure design is divided into two parts of circuits, conducting circuits are etched out from the bottom of the main line through prefabrication, the two parts of conducting circuits are positive and negative electrodes are opposite to each other, namely, the positive electrode of the high-color-temperature blue light flip chip group and the negative electrode of the low-color-temperature white light chip group share one circuit, the negative electrode of the high-color-temperature blue light flip chip and the positive electrode of the low-color-temperature white light chip share one circuit, and peak/valley current control dimming is realized through a control program. The utility model provides a product reliability improves heat conduction efficiency and radiating effect, reduces LED chip light decay, increase of service life, and adopts integral packaging structure, reduces production technology, reduction in production cost, and the preparation technology is simpler.
Description
Technical Field
The utility model relates to the field of lighting technology, in particular to two channels in LED illumination can be adjusted luminance flexible no light spot lamp area.
Background
Currently, LEDs are widely used as fourth generation green illumination light sources. The LED flexible lamp strip is used as a product which can be randomly bent and mounted, and the market is greatly increased in recent years. The adjustable flexible light bar product is popular in the market due to the advantages of good light type, easy design and the like. The light source with adjustable light can be used in special occasions with adjustable color temperature, such as markets, counters, coffee shops and the like. The LED lamp can be used for dimming and mixing colors, has multiple purposes, and realizes comprehensive and intelligent LED illumination. The existing packaging method for achieving the light source effect mainly adopts a multi-wire connection mode to realize:
1. the four-wire high-color-temperature positive and negative electrode non-sharing scheme is adopted, and the light and color adjusting effects are realized by adjusting the magnitudes of two paths of current in PWM and other modes;
2. the dimming and toning effects are realized by adopting a three-wire scheme of common negative/common positive of a two-color circuit and adjusting the magnitude of two currents in a PWM (pulse width modulation) mode and the like.
Above two kinds of modes are because reasons such as circuit segmentation part and ann rule line distance, can't design the following interval product of 8mm in flexible lamp strip field, can't satisfy the miniaturized, the design demand that extremely changes of market product. Therefore, the technical personnel in the field need to solve the problem of how to provide a manufacturing method of an LED lighting dimming non-light spot flexible light bar with the characteristics of narrow width, high production efficiency, low thermal resistance, good reliability and long service life.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a flexible dull spot lamp area that LED illumination two passageways can be adjusted luminance that has that the width is narrow, production efficiency is high, low thermal resistance, reliable performance are good, longe-lived characteristics.
In order to achieve the above object, the utility model provides a two-channel can adjust luminance flexible no light spot lamp area, include: the LED blue light flip chip comprises a plurality of LED blue light flip chip groups, a white light chip group and a long-strip-shaped FPCB flexible substrate, wherein the FPCB flexible substrate forms a circuit layer of positive and negative two-way main lines through a prefabricated circuit, the main line interval structure is divided into two parts of circuits, a conducting circuit is etched at the bottom of the main line through prefabrication, the positive and negative poles of the two parts of conducting circuits are opposite to each other, the white light chip groups and the high color temperature blue light flip chip groups are adopted for low color temperature, the two parts of chips are arranged in a linear staggered mode at the central position of the FPCB flexible substrate, the positive pole of the high color temperature blue light flip chip groups and the negative pole of the low color temperature white light chip groups share one circuit, the negative pole of the high color temperature blue light flip chip groups and the positive pole of the low color temperature white light chip groups share one circuit, and peak/valley current emission control dimming is realized through a control program.
Wherein, blue light flip-chip group includes: a plurality of LED blue light flip chip, a plurality of LED blue light flip chip and white light chip pass through the crisscross fixed of tin cream to the central point that the distribution of equal parts was fixed at FPCB flexible substrate puts, fills and covers the colloid of phosphor powder to the part on the FPCB flexible substrate, covers low-color temperature white light chip during the injecting glue.
Wherein, each chipset includes a plurality of LED flip chip, electric connection between each flip LED wafer, and the LED flip chip at two LED chip circuit both ends is connected the phosphor powder sealing compound layer with the prefabricated circuit conductor at carrier both ends respectively, the sealing compound layer cladding is in the carrier with the chipset is peripheral.
Each circuit node is provided with a plurality of pairs of circuit nodes, and each pair of circuit nodes is respectively connected with the N pole and the P pole of a group of high-color-temperature blue light flip chip/low-color-temperature white light chip LED, so that the two circuits of circuit nodes are independently or respectively lightened.
Wherein, two way conducting circuits are the even dislocation of straight line equidistance and arrange.
The low color temperature of the adhesive layer is in a white light chip mode, the high color temperature of the adhesive layer is in a fluorescent colloid uniform full coverage mode, the low color temperature white light chip is covered, and the difference between the two color temperatures is not lower than 500K.
The packaging adhesive is silica gel with heat resistance higher than 260 ℃, and fluorescent powder particles are mixed in the silica gel according to parameter requirements.
Wherein, FPCB flexible substrate is high conductivity, double-deck circuit FPCB flexible substrate.
The circuits in the circuit layer are connected in series or in parallel or in series and parallel.
And the front surface and the back surface of the circuit layer formed by etching are coated with insulating layers.
The utility model has the advantages that: the flexible light spot-free lamp strip with the two channels capable of adjusting light comprises two main lines, namely an anode and a cathode; including a plurality of LED blue light flip chip group, white light chip group and a rectangular shape FPCB flexible substrate, FPCB flexible substrate is through prefabricated circuit, form two way mainlines of positive negative pole, the main line interval structural design divide into two part circuits, and the bottom is through prefabricated etching out the conducting wire, two part circuits are just, the negative pole is mutually opposite, wherein the white light chip group is adopted to low colour temperature, blue light chip group is adopted to high colour temperature, low colour temperature adopts white light chip top coating fluorescent glue mode, two part chips are sharp staggered arrangement and set up in FPCB central point, and fill and cover the colloid of phosphor powder to the part on the FPCB flexible substrate, cover low colour temperature white light chip during the injecting glue. The positive pole and the negative pole between the LED blue light flip chip and the LED white light chip are connected through a prefabricated circuit, the positive pole and the negative pole of the high-color temperature blue light chip and the white light chip are creatively exchanged, namely the positive pole of the high-color temperature blue light chip and the negative pole of the low-color temperature white light chip share one circuit, the negative pole of the high-color temperature blue light chip and the positive pole of the low-color temperature white light chip share one circuit, and the light modulation is controlled by emitting peak/valley current (same as alternating current principle) through a control program; this LED chipset of LED light source uses the mode of prefabricated circuit to connect, has improved the stability and the fastness of connection, and overall structure is even pleasing to the eye, and the preparation is convenient, the utility model discloses a flip-chip LED chip and high heat conduction FPCB flexible substrate, no gold thread design, the influence of the inflation of encapsulating glue when having avoided because of cold and hot change to product reliability adopts flexible FPCB base plate simultaneously, makes the product possess the flexible ability of buckling at will. The utility model discloses LED light source is owing to adopt LED to cover brilliant chip, and the electrode orientation of chip is down, can the lug welding on the circuit board, exempts from the gold thread welding, has reduced production facility's input, and the heat conduction area increase between LED flip chip and the bar base plate, is favorable to improving heat conduction efficiency and radiating effect, reduces LED chip light decay, increase of service life. Just the utility model discloses an integral packaging structure has reduced the production technology of encapsulating LED chip list into LED lamp pearl earlier, has reduced manufacturing cost, makes the whole preparation technology in flexible facula-free lamp area of adjusting luminance simpler.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic front view of a two-channel dimmable flexible non-light spot lamp strip according to the present invention;
fig. 2 is a schematic back view of the two-channel light-adjustable flexible non-light spot lamp strip of the present invention;
fig. 3 is a schematic view of the two-channel dimmable flexible light-spot-free lamp strip according to the present invention;
fig. 4 is the utility model discloses the circuit schematic diagram in flexible no facula lamp area that two passageways can adjust luminance.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Reference numerals
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the utility model provides a two-channel light-adjustable flexible non-light spot lamp strip, include: the LED blue light flip chip comprises a plurality of LED blue light flip chip groups, a white light chip group and a strip-shaped FPCB flexible substrate, wherein the FPCB flexible substrate forms a circuit layer of positive and negative two main lines through a prefabricated circuit, the main line is divided into two parts of circuits in a spacing structure design, conducting circuits are etched at the bottom through prefabrication, the positive poles and the negative poles of the two parts of conducting circuits are opposite to each other, the white light chip group is adopted for low color temperature, the blue light flip chip group is adopted for high color temperature, the two parts of chips are arranged at the central position of the FPCB flexible substrate in a linear staggered mode, the positive poles and the negative poles of the two parts of circuits are opposite to each other, namely, the positive pole of the high color temperature blue light chip and the positive pole of the white light chip are exchanged, namely, the positive pole of the high color temperature blue light chip group and the negative pole of the low color temperature white light chip group share one circuit, the negative pole of the high color temperature blue light chip and the positive pole of the low color temperature white light chip group share one circuit, dimming is controlled by controlling the program to emit peak/valley current (in accordance with the alternating current principle, such as the mode of controlling high color temperature by peak current and controlling low color temperature by valley current).
Wherein, blue light flip-chip group includes: a plurality of LED blue light flip chip, a plurality of LED blue light flip chip and white light chip pass through the crisscross fixed of tin cream to the central point that the distribution of equal parts was fixed at FPCB flexible substrate puts, fills and covers the colloid of phosphor powder to the part on the FPCB flexible substrate, covers low-color temperature white light chip during the injecting glue.
Wherein, each chipset includes a plurality of LED flip chip, electric connection between each flip LED wafer, and the LED flip chip at two LED chip circuit both ends is connected the phosphor powder sealing compound layer with the prefabricated circuit conductor at carrier both ends respectively, the sealing compound layer cladding is in the carrier with the chipset is peripheral.
The embodiment of the utility model provides an in, every way conducting wire all is equipped with a plurality ofly to the circuit node, every N utmost point and the P utmost point of connecting a set of high color temperature blue light flip chip/low color temperature white light chip LED respectively on every circuit node, makes two way conducting wires light alone or respectively. The two conductive circuits are uniformly arranged in a staggered manner at equal intervals in a straight line, so that light color neutralization and color crosstalk after lighting are avoided.
The low color temperature of the sealant layer is in a white chip mode, the high color temperature is in a fluorescent colloid uniform full coverage mode, the low color temperature white chip is covered, the difference between the two color temperatures is not lower than 500K, the color cross generated by secondary excitation of the fluorescent powder in the high color temperature lighting process can be avoided by utilizing the wavelength difference principle that the excitation wave band of the fluorescent powder is in the range of 420-480nm and the color temperatures at different intervals, and the light color effect of the product after light and color adjustment is not influenced.
The packaging adhesive is silica gel with heat resistance higher than 260 ℃, and fluorescent powder particles are mixed in the silica gel according to parameter requirements.
In the embodiment of the utility model provides an in, FPCB flexible substrate is high conductibity, double-deck circuit FPCB flexible substrate. The circuits in the circuit layer are connected in series or in parallel or in series and parallel. And coating insulating layers on the front and back surfaces of the circuit layer formed by etching by adopting a prefabricated circuit.
More specifically, as shown in fig. 1-4, the utility model provides a two-channel light-adjustable flexible non-light spot lamp strip, which comprises two main lines, namely an anode and a cathode; wherein, B01 is a warm white cathode circuit, namely a positive white anode circuit; b02 is a positive white negative electrode circuit, namely a warm white positive electrode circuit; b03 is white fluorescent glue; w01 is warm white 1.0 × 0.5 chip, C01 is blue light chip (coated with phosphor powder to excite positive white light), G03 is warm white series-parallel connection via hole, G04 is positive white series-parallel connection via hole; d01 is a warm white current limiting resistor; d02 is a positive white current limiting resistor; g01 is a front circuit and back circuit via hole; g02 is a front side line and a back side line via.
Two-channel dimmable flexible non-light spot lamp band comprises a plurality of LED blue light flip chip groups, a white light W01 white light chip group with the size being less than 1.0 x 0.5mm and a strip-shaped FPCB flexible substrate, wherein the FPCB flexible substrate forms positive and negative two-way main lines through a prefabricated line, the spacing structure of the main line is divided into two parts of circuits, the bottom of the main line is etched to form a conducting circuit through prefabrication, the positive and negative electrodes of the two parts of circuits of B01/B02 are opposite to each other, the white light chip groups are adopted for low color temperature, the blue light chip groups are adopted for high color temperature, a fluorescent glue coating mode is adopted above the B03, and the two parts of chips are arranged at the center of the FPCB in a linear staggered mode. The LED blue light flip chip and the white light chip are fixed on the center of the FPCB flexible substrate in an equal distribution mode through tin paste in a staggered mode, (as shown in an enlarged diagram of fig. 3, a white light cathode is a warm white light anode, WN is a warm white chip cathode, BP is a warm white chip anode, WP is a warm white chip anode, BN is a warm white chip cathode) and partially fills and covers the colloid of the fluorescent powder on the FPCB flexible substrate, and the low color temperature white light chip is covered during glue injection. The positive pole and the negative pole between the LED blue light flip chip and the LED white light chip are connected through a prefabricated circuit, the positive pole and the negative pole of the high-color temperature blue light chip and the white light chip are creatively exchanged, namely the positive pole of the high-color temperature blue light chip and the negative pole of the low-color temperature white light chip share one circuit, the negative pole of the high-color temperature blue light chip and the positive pole of the low-color temperature white light chip share one circuit, and the light modulation is controlled by emitting peak/valley current (same as alternating current principle) through a control program; the LED chip group of the novel PFCB flexible non-light spot lamp strip comprises a plurality of LED flip chips, the LED flip chips are electrically connected, the LED flip chips at two ends of two LED chip circuits are respectively connected with prefabricated circuit conductors at two ends of a carrier through fluorescent powder sealing layers, and the sealing layers are coated on the periphery of the carrier and the LED chip group; this LED chipset of LED light source uses the mode of prefabricated circuit to connect, has improved the stability and the fastness of connection, and overall structure is even pleasing to the eye, and the preparation is convenient, the utility model discloses a flip-chip LED chip and high heat conduction FPCB flexible substrate, no gold thread design, the influence of the inflation of encapsulating glue when having avoided because of cold and hot change to product reliability adopts flexible FPCB base plate simultaneously, makes the product possess the flexible ability of buckling at will.
Compared with the prior art, the utility model discloses a two-channel dimmable flexible non-spot lamp strip, two parts of circuits are arranged in the FPCB flexible circuit layer, and the bottom is etched out the conducting circuit through prefabrication, each circuit is provided with a plurality of pairs of circuit nodes, each pair of circuit nodes is respectively connected with a group of high-color-temperature blue-light flip chip/low-color-temperature white-light chip LED N pole and P pole, so that two circuits can be independently or respectively lighted; the two circuits are uniformly arranged in a staggered manner at equal intervals in a straight line, so that light color neutralization and color crosstalk after lighting are avoided.
The low color temperature of the sealing adhesive layer covering the circuit adopts a white light chip mode, the high color temperature adopts a fluorescent colloid uniform full coverage mode to cover the low color temperature white light chip, the difference between the two color temperatures is not lower than 500K, the color cross generated by secondary excitation of the fluorescent powder in the high color temperature lighting process can be avoided by utilizing the wavelength difference principle of the fluorescent powder excitation wave band of 420-480nm and the color temperatures with different intervals, and the light color effect of the product after light and color adjustment is not influenced.
Two lines are prefabricated on an FPCB flexible substrate, the anodes and the cathodes of the chips and the white light chips on the two lines are exchanged, two light sources are uniformly arranged at the center of the FPCB and are linearly arranged, the LED chip set comprises a plurality of LED flip chips, and each chip is fixed on the printed line by adopting high-precision tin-silver alloy (the particle diameter is less than 12 micrometers); the product is designed in a two-channel mode, and the narrowest width of the product can be designed to be 2.8 mm; the transparent adhesive tape layer is adopted, the single surface of the adhesive tape layer is coated on the carrier and the upper part and the periphery of the LED chip group, the adhesive tape layer is in a round or oval shape formed by silica gel with a high thixotropic effect, the whole structure is uniform and attractive, and the manufacturing is convenient.
Furthermore, the utility model discloses the LED light source is owing to adopt LED to cover brilliant chip, and the electrode orientation of chip is down, can the lug welding on the circuit board, exempts from the gold thread welding, has reduced production facility's input, and the heat conduction area increase between LED flip chip and the bar base plate, is favorable to improving heat conduction efficiency and radiating effect, reduces LED chip light decay, increase of service life. Just the utility model discloses an integral packaging structure has reduced the production technology of encapsulating LED chip list into LED lamp pearl earlier, has reduced manufacturing cost, makes the manufacturing technology of whole flexible facula-free lamp area of adjusting luminance simpler
The utility model provides a flexible no facula lamp area that two passageways can adjust luminance adopts following step preparation:
the method comprises the following steps: manufacturing a circuit board, and carrying out multi-layer printing and etching modes to form a circuit layer, a filling layer, a functional area and the like; the printing can be carried out integrally, and finally, the strips are cut;
step two: fixing the LED flip chip on the node of the circuit layer by using solder paste or other colloid, and fixing the anode and the cathode of the white light chip on the circuit layer in the same way with opposite polarities so as to electrically connect the electrode of the LED flip chip and the circuit layer;
step three: soldering the flip chip and the white chip on the circuit board through reflow soldering;
step four: preparing packaging glue, and adding fluorescent powder particles into the packaging glue according to different color temperature requirements;
step five: coating prepared packaging glue on a circuit board on which an LED flip chip and a constant-current IC thereof are welded;
step six: and baking, inspecting and packaging the circuit board coated with the packaging adhesive.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (9)
1. The utility model provides a two passageway can adjust luminance flexible no light spot lamp area which characterized in that includes: a plurality of LED blue light flip chip groups, white light chip group and a rectangular shape FPCB flexible substrate, the FPCB flexible substrate forms the circuit layer of two way mainlines of positive negative pole through prefabricated circuit, and the main line interval structural design divide into two parts circuit, and the bottom etches out the conducting wire through prefabrication, and two parts conducting wire is just, the negative pole is mutually opposite, and wherein the blue light flip chip group is adopted to low colour temperature, high colour temperature, and two parts chip are straight line staggered arrangement and are in FPCB flexible substrate's central point puts, and a circuit, high colour temperature blue light flip chip group's negative pole and the anodal sharing of low colour temperature white light chip group of anodal and the low colour temperature white light chip group of high colour temperature blue light flip chip group are in line.
2. The two-channel dimmable flexible non-spot light strip of claim 1, wherein the blu-ray flip chip set comprises: a plurality of LED blue light flip chip, a plurality of LED blue light flip chip and white light chip pass through the crisscross fixed of tin cream to the central point that the distribution of equal parts was fixed at FPCB flexible substrate puts, fills and covers the colloid of phosphor powder to the part on the FPCB flexible substrate, covers low-color temperature white light chip during the injecting glue.
3. The two-channel dimmable flexible non-spot light strip of claim 1, wherein each chip set comprises a plurality of LED flip chips, the LED flip chips are electrically connected with each other, the LED flip chips at two ends of the two LED chip circuits are respectively connected with the prefabricated circuit conductors at two ends of the carrier by a fluorescent powder sealant layer, and the sealant layer is coated on the periphery of the carrier and the chip set.
4. The two-channel dimmable flexible non-speckle light strip of claim 1, wherein each conductive trace has a plurality of pairs of circuit nodes, and each pair of circuit nodes is connected to a set of N and P electrodes of the high color temperature blue light flip chip/low color temperature white light chip LED, respectively, so that the two conductive traces are independently or separately lit.
5. The two-channel dimmable flexible non-speckle lamp strip of claim 4, wherein the two conductive traces are uniformly staggered in a straight line at equal intervals.
6. The two-channel dimmable flexible non-speckle lamp strip of claim 3, wherein the sealant layer covers the low color temperature white chip in a white chip mode at the low color temperature and in a fluorescent colloid uniform full coverage mode at the high color temperature, and the difference between the two color temperatures is not less than 500K.
7. The two-channel dimmable flexible non-speckle light strip of claim 1, wherein the FPCB flexible substrate is a high-conductivity, double-layer line FPCB flexible substrate.
8. The two-channel dimmable flexible non-speckle light strip of claim 1, wherein the circuits in the circuit layer are connected in series or in parallel or in series and parallel.
9. The two-channel dimmable flexible non-speckle light strip of claim 1, wherein a pre-formed circuit is used, and insulating layers are coated on both the front and back sides of the circuit formed by etching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121008301.0U CN214672607U (en) | 2021-05-12 | 2021-05-12 | Two-channel light-adjustable flexible facula-free lamp strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121008301.0U CN214672607U (en) | 2021-05-12 | 2021-05-12 | Two-channel light-adjustable flexible facula-free lamp strip |
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| Publication Number | Publication Date |
|---|---|
| CN214672607U true CN214672607U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121008301.0U Active CN214672607U (en) | 2021-05-12 | 2021-05-12 | Two-channel light-adjustable flexible facula-free lamp strip |
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| CN (1) | CN214672607U (en) |
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- 2021-05-12 CN CN202121008301.0U patent/CN214672607U/en active Active
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