Silica gel neon colorful COB (Chip On Board) flexible lamp strip capable of emitting light on whole body
By designing the whole luminescent silicone neon color COB flexible light strip, the overall design of flexible circuit board and half-fold hollow area, the misalignment problem caused by inconsistent length during splicing of COB light strips is solved, and the alignment and cost reduction of the front and back luminescence are achieved.
Patent Information
- Application Number
- CN202421958864.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-13
AI Technical Summary
During the splicing process, the length of the existing COB light strips is inconsistent due to the sheet tolerance, resulting in dislocation problems.
A full-body luminescent silicone neon color COB flexible light strip is designed, using an overall design flexible circuit board, with a half-fold hollow area in the middle, and the front and back luminous units are mirror symmetrical. Through the half-fold hollow area, the copper skin is penetrated, and the signal conductive circuit passes through the half-fold hollow area to connect the IC control chip and the flip LED chip to achieve the control of the front and back luminescence.
Through the half-folding design, the misalignment problem caused by inconsistent lengths during splicing of flexible light strips is solved, and the alignment of the front and back luminescents is achieved, which reduces manufacturing costs and improves the environmental protection of the product.
Smart Images
Figure CN222864866U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flexible light strips, in particular to a full-body luminous silicone neon fantasy color COB flexible light strip. Background Art
[0002] With the growing development of COB light strips in the decoration industry, the particularity and novelty of the installation environment, people have begun to try to improve the light-emitting effect by squeezing out external structures of different shapes through different materials. The light-emitting effect is mainly improved by increasing the height and width of the structure to increase the area of the luminous area. The main external materials are PVC, PU, silicone and other materials. Due to the different materials, the harder PVC is suitable for flat installation and streamlined installation, and the PU material can be made into some simple shapes and bends, etc. However, the silicone material is relatively soft and can be made into any shape, and it will not harden after long-term storage. , fading and other problems, the material is also relatively environmentally friendly. After the silicone passes through the molding mold, it is hot-pressed into different structures, and its shape can be ever-changing. Among them, the traditional SMD solution, after the finished product is made, the granular light source can be seen after the brightness is dimmed and the color is attenuated. In the operation process, because two identical boards are embedded back to back, when they are spliced into a specified length, it is impossible to guarantee that the lengths of the two boards are consistent. Due to the tolerance of the board material, the length tolerance of the welding splicing of 0.5 meters may be 1mm, then when it is connected to 5 meters or 10 meters, the difference is 5mm to 10mm, which will cause misalignment problems. Utility Model Content
[0003] The utility model provides a fully luminous silicone neon fantasy color COB flexible light strip, aiming to solve the problem that the length of the two light panels cannot be guaranteed to be consistent, resulting in misalignment, etc. in the product using a two-light panel splicing structure.
[0004] The utility model provides a whole body luminous silicone neon fantasy color COB flexible light strip, comprising a flexible circuit board, a signal conductive circuit, an IC control chip, a flip-chip LED chip, and an LED conductive circuit. The flexible circuit board comprises a front light-emitting unit and a back light-emitting unit. A folded hollow area is provided in the middle of the flexible circuit board. The front light-emitting unit and the back light-emitting unit are mirror-symmetrical with respect to the folded hollow area. The front light-emitting unit is provided with an IC control chip and a signal conductive slot hole. The back light-emitting unit is provided with a signal conductive circuit. The signal conductive slot hole and the signal conductive circuit are mirror-symmetrical with respect to the folded hollow area. The front light-emitting unit and the back light-emitting unit are both provided with a plurality of groups of flip-chip LED chips. The flip-chip LED chip of the front light-emitting unit is connected to the IC control chip, and the flip-chip LED chip of the back light-emitting unit is connected to the IC control chip through the LED conductive circuit.
[0005] As a further improvement of the utility model, each group of flip-chip LED chips includes a flip-chip blue light LED chip, a flip-chip red light LED chip, and a flip-chip green light LED chip. The LED conductive circuit includes a red light conductive circuit, a blue light conductive circuit, a green light conductive circuit, and a positive electrode connection circuit. The flip-chip blue light LED chip, the flip-chip red light LED chip, and the flip-chip green light LED chip of the front light-emitting unit are connected in parallel and then connected to the IC control chip. The flip-chip blue light LED chip, the flip-chip red light LED chip, and the flip-chip green light LED chip of the back light-emitting unit are connected in parallel through the red light conductive circuit, the blue light conductive circuit, and the green light conductive circuit respectively, and then connected to the IC control chip; the positive electrode connection circuit is respectively connected to the flip-chip blue light LED chip, the flip-chip red light LED chip, and the flip-chip green light LED chip.
[0006] As a further improvement of the utility model, the front light-emitting unit and the back light-emitting unit are both connected with a blue light current limiting resistor, a red light current limiting resistor, and a green light current limiting resistor, and the flip-chip blue light LED chip, flip-chip red light LED chip, and flip-chip green light LED chip of the front light-emitting unit and the back light-emitting unit are respectively connected in series with the blue light current limiting resistor, the red light current limiting resistor, and the green light current limiting resistor.
[0007] As a further improvement of the present invention, the signal conductive circuit includes a positive conductive circuit, a signal input and output conductive circuit, and a negative conductive circuit; the signal conductive slot includes a positive conductive slot, a signal input and output conductive slot, and a negative conductive slot; the positive conductive circuit and the positive conductive slot, the signal input and output conductive circuit and the signal input and output conductive slot, and the negative conductive circuit and the negative conductive slot are mirror-symmetrical with the folded hollow area as the axis of symmetry.
[0008] As a further improvement of the utility model, after the flexible circuit board is folded in half, tin is added to the positive conductive slot hole, the signal input and output conductive slot hole, and the negative conductive slot hole respectively, so that the back light-emitting unit is respectively connected to the positive conductive circuit, the signal input and output conductive circuit, and the negative conductive circuit of the front light-emitting unit.
[0009] As a further improvement of the utility model, the folded hollow area passes through the copper sheet inside the flexible circuit board, and the signal conductive line passes through the folded hollow area to connect the IC control chip and the flip-chip LED chip of the back light-emitting unit.
[0010] As a further improvement of the present invention, the luminous silicone neon fantasy COB flexible light strip also includes an IC current limiting resistor, an IC filter capacitor, and a signal input current limiting protection resistor. The IC current limiting resistor, IC filter capacitor, and signal input current limiting protection resistor are connected to the front light-emitting unit, and the IC control chip is respectively connected to the IC current limiting resistor, IC filter capacitor, and signal input current limiting protection resistor.
[0011] As a further improvement of the utility model, the luminous silicone neon fantasy COB flexible light strip also includes an LED chip protection colloid. After the flexible circuit board is folded in half, the LED chip protection colloid is coated on the flip-chip LED chips of the front light-emitting unit and the back light-emitting unit.
[0012] As a further improvement of the present invention, the luminous silicone neon fantasy COB flexible light strip also includes an outer colloid, which includes a silicone focusing layer, a silicone diffusion layer, and a hand-feel oil protection layer. The silicone focusing layer wraps the folded flexible circuit board, the silicone diffusion layer is wrapped around the outside of the silicone focusing layer, and the hand-feel oil protection layer is wrapped around the outside of the silicone diffusion layer.
[0013] As a further improvement of the utility model, the silicone light-focusing layer is provided with an IC component avoidance position, and the IC control chip on the flexible circuit board is docked with the IC component avoidance position.
[0014] The beneficial effects of the utility model are as follows: by designing the luminous front and back panels as a whole, and setting a folded hollow area in the middle, and using this area as the symmetry axis to mirror-symmetric each signal conductive circuit, each circuit of the folded flexible circuit board can be aligned without causing the problem of misalignment and inconsistent lengths of the two panels; at the same time, the flip-chip LED chips on the front and back are connected through the LED conductive circuit to realize the control of the light emission on both sides. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the front circuit diagram of the utility model of the all-over luminous silicone neon fantasy color COB flexible light strip;
[0016] Figure 2 This is the back circuit diagram of the utility model of the all-over luminous silicone neon fantasy color COB flexible light strip;
[0017] Figure 3 This is a side view of the appearance of the flexible light strip in the utility model;
[0018] Figure 4 It is a structural side view of the silica gel neon in the utility model. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0020] The utility model provides an embedded COB colorful full-body luminous silicone neon light belt, and the product mainly relates to decorative lighting, atmosphere lighting and artistic lighting.
[0021] like Figure 1 and Figure 2As shown, the utility model is a kind of luminous silicone neon fantasy COB flexible light strip, including a flexible circuit board 1, a signal conductive circuit 2, an IC control chip 3, a flip-chip LED chip 4, and an LED conductive circuit 5. The flexible circuit board 1 includes a front light-emitting unit 11 and a back light-emitting unit 12. A folded hollow area 13 is provided in the middle of the flexible circuit board 1. The front light-emitting unit 11 and the back light-emitting unit 12 are mirror-symmetrical with respect to the folded hollow area 13. The front light-emitting unit 11 is provided with an IC control chip 3 and a signal conductive slot 6. The back light-emitting unit 12 is provided with a signal conductive circuit 2. The signal conductive slot 6 and the signal conductive circuit 2 are mirror-symmetrical with respect to the folded hollow area 13. The front light-emitting unit 11 and the back light-emitting unit 12 are both provided with multiple groups of flip-chip LED chips 4. The flip-chip LED chip 4 of the front light-emitting unit 11 is connected to the IC control chip 3, and the flip-chip LED chip 4 of the back light-emitting unit 12 is connected to the IC control chip 3 through the LED conductive circuit 5.
[0022] The utility model has made a brand-new design for the circuit board. Compared with the traditional conventional light strips of the same width, two are needed. After being welded into a specified length, they are fitted back to back and inserted into a silicone neon sleeve to achieve light emission on both the front and back sides. Since the data input of the fantasy light strip is directional, the input electrodes are misaligned after back-to-back fitting, and the output end is difficult to operate. The design of the utility model is that the two boards are designed as a whole, with positive and negative electrodes and signal line connection circuits in the middle, so that after the production is completed, they can be folded in half to achieve the back-to-back effect, thereby reducing half of the electronic components, significantly reducing the cost, and making the manufacturing more convenient and simple.
[0023] Each group of flip-chip LED chips 4 includes a flip-chip blue LED chip 41, a flip-chip red LED chip 42, and a flip-chip green LED chip 43. The LED conductive circuit 5 includes a red conductive circuit 52, a blue conductive circuit 51, a green conductive circuit 53, and a positive connection circuit 54. The flip-chip blue LED chip 41, the flip-chip red LED chip 42, and the flip-chip green LED chip 43 of the front light-emitting unit 11 are connected in parallel and connected to the IC control chip 3. The flip-chip blue LED chip 41, the flip-chip red LED chip 42, and the flip-chip green LED chip 43 of the back light-emitting unit 12 are connected in parallel and connected to the IC control chip 3 through the red conductive circuit 52, the blue conductive circuit 51, and the green conductive circuit 53 respectively; the positive connection circuit 54 is connected to the flip-chip blue LED chip 41, the flip-chip red LED chip 42, and the flip-chip green LED chip 43 respectively.
[0024] In each flip-chip LED chip 4 light-emitting unit, there are three colors of main line parallel circuits and positive electrode connection circuits, so that after the front light-emitting unit 11 mounted with the output circuit of the IC control chip 3 is connected in parallel to the circuit of the back light-emitting unit 12, multiple flip-chip LED chips 4 on a single side are connected in series, so that the light-emitting sequence and color of the front unit mounted with the IC control chip 3 are consistent with those of the back unit, and penetrate into the outer colloid 8 of the circular sleeve to achieve 360° light emission without dead angles.
[0025] The front light-emitting unit 11 and the back light-emitting unit 12 are both connected with a blue light current-limiting resistor 44, a red light current-limiting resistor 45, and a green light current-limiting resistor 46. The flip-chip blue light LED chip 41, the flip-chip red light LED chip 42, and the flip-chip green light LED chip 43 of the front light-emitting unit 11 and the back light-emitting unit 12 are respectively connected in series with the blue light current-limiting resistor 44, the red light current-limiting resistor 45, and the green light current-limiting resistor 46. Current-limiting resistors are added to the series circuits of the red, green, and blue lines of the front light-emitting unit 11 and the back light-emitting unit 12 to prevent the IC control chip 3 from failing due to excessive power consumption in the case of color mixing.
[0026] The signal conductive circuit 2 includes a positive conductive circuit 21, a signal input / output conductive circuit 22, and a negative conductive circuit 23. The signal conductive slot 6 includes a positive conductive slot 61, a signal input / output conductive slot 62, and a negative conductive slot 63. The positive conductive circuit 21 and the positive conductive slot 61, the signal input / output conductive circuit 22 and the signal input / output conductive slot 62, and the negative conductive circuit 23 and the negative conductive slot 63 are mirror-symmetrical with the folded hollow area 13 as the axis of symmetry.
[0027] After the flexible circuit board 1 is folded in half, tin is added to the positive conductive slot 61, the signal input and output conductive slot 62, and the negative conductive slot 63 of the front light-emitting unit 11, so that the front light-emitting unit 11 is respectively connected with the positive conductive circuit 21, the signal input and output conductive circuit 22, and the negative conductive circuit 23 of the back light-emitting unit 12.
[0028] Slots are designed on the positive and negative electrodes and the signal input and output pads so that after they are folded in half, the front and back sides are connected by adding tin to the conductive slots, thereby achieving electrical connection between the front and back lines, increasing the conductive lines, reducing the voltage drop at the ends, and increasing the width of the copper foil for signal input and output, making the signal current more stable. After the slots are connected together, the folded material will not bend or dislocated due to external forces.
[0029] The folded hollow area 13 penetrates the copper sheet inside the flexible circuit board 1, and the signal conductive line 2 passes through the folded hollow area 13 to connect the IC control chip 3 and the flip-chip LED chip 4 of the back light-emitting unit 12. The central part of the two light-emitting units on the front and back is provided with a folded hollow area 13, and the copper sheet inside the line is also hollowed out. Although copper has good bending properties, after the area increases, the copper sheet will break or crack after a certain number of bends. The folded hollow area 13 is provided to reserve only the positive pole and the three colors of red, green and blue conductive lines. The lines can pass safe currents while having a very narrow width, making them more flexible during the bending process and not easy to break or damage.
[0030] The whole body luminous silicone neon fantasy COB flexible light strip also includes an IC current limiting resistor 31, an IC filter capacitor 32, and a signal input current limiting protection resistor 33. The IC current limiting resistor 31, the IC filter capacitor 32, and the signal input current limiting protection resistor 33 are connected to the front light-emitting unit 11, and the IC control chip 3 is respectively connected to the IC current limiting resistor 31, the IC filter capacitor 32, and the signal input current limiting protection resistor 33. The components around the IC control chip 3 include the IC current limiting resistor 31, the IC filter capacitor 32, and the signal input current limiting protection resistor 33. In order to reduce the power consumption generated by the control of the IC control chip 3, the three-way flip-chip LED chip 4 loop is connected.
[0031] like Figure 3 As shown, the all-over luminous silicone neon fantasy COB flexible light strip also includes an LED chip protection colloid 7. After the flexible circuit board 1 is folded in half, the LED chip protection colloid 7 is coated on the flip-chip LED chips 4 of the front light-emitting unit 11 and the back light-emitting unit 12.
[0032] like Figure 4 As shown, the all-over luminous silicone neon fantasy COB flexible light strip also includes an outer colloid 8, which includes a silicone light-gathering layer 81, a silicone diffusion layer 82, and a hand-feel oil protection layer 83. The silicone light-gathering layer 81 wraps the folded flexible circuit board 1, the silicone diffusion layer 82 wraps the outside of the silicone light-gathering layer 81, and the hand-feel oil protection layer 83 wraps the outside of the silicone diffusion layer 82. The silicone light-gathering layer 81 is provided with an IC component avoidance position 84, and the IC control chip 3 on the flexible circuit board 1 is docked to the IC component avoidance position 84. The IC component avoidance position 84 leaves installation space for the IC control chip 3 to avoid squeezing and damaging the IC control chip 3.
[0033] The whole body luminous product is a silicone neon tube extruded by a mold, that is, the outer colloid 8, which is a hollow round shape with a diameter of 25mm. The inner cavity has a slide groove 85 and a silicone diffusion layer 82. The slide groove 85 is located in the silicone focusing layer 81 and is used to load the folded flexible circuit board 1. The outside is usually coated with a layer of hand-feel oil film with organic silicon compounds and other additives on the surface, that is, the hand-feel oil protective layer 83. These compounds are combined with silicone to form a transparent film, filling the tiny depressions on the surface of the silicone diffusion layer 82, making its surface feel smoother, increasing softness and achieving dust and water resistance.
[0034] The utility model of the whole body luminous silicone neon magic color COB flexible light strip is made by the following steps:
[0035] Step 1: Draw the circuit first, design and arrange the circuit data of three independent areas, and design a circular integrated silicone extrusion mold, and model and produce the data in combination with the appearance of the designed product;
[0036] Step 2: Make the circuit board through prefabricated circuits, multi-layer printing and etching to form circuit layers, filling layers, functional areas, etc.; the whole can be printed during printing, and then cut into strips, and the extrusion mold is washed and disinfected by the machine tool to prepare;
[0037] Step 3: Perform die bonding on the manufactured circuit board. Die bonding is to fix the LED flip chip on the node of the circuit layer with solder paste or other colloids, so that the electrodes of the LED flip chip form an electrical connection with the circuit layer;
[0038] Step 4: Before step 3, other current limiting resistors can be soldered on the circuit board using production equipment, or the current limiting resistors can be fixed on the circuit board with solder paste or other colloids while or after fixing the flip chip;
[0039] Step 5: Put the FPC flexible circuit board 1 after the die bonding is completed into the reflow soldering, and solder the flip chip and the current limiter on the circuit board;
[0040] Step 6: Prepare the milky white paste of silica gel combined with titanium dioxide nanopowder, program the dispensing machine according to the FPCB shape, align the dispensing head with the center path where dispensing is required, apply the glue to the designated area after dispensing, and bake in the oven for 2 hours to solidify it.
[0041] Step 7: After the high-temperature baked materials are taken out of the oven, they are pre-cut, electrically tested, visually inspected, welded, aged, and separated;
[0042] Step 8: Fold the flexible circuit board 1 in half, add tin with a soldering iron at the position where the tin slot hole is located to fix it up and down, and roll it up with a reel to store it after completion to avoid scratching the surface components. The silicone is repeatedly squeezed to develop a strong flexibility. Use an integrated extruder to install the designed mold, put the light strip on the reel according to the set position, align the slide groove of the mold, the IC component avoidance position 84, etc., so that it can completely cover the light strip and combine them together;
[0043] Step 9: Weld the plates according to the length and size required by the customer, connect them to the length required by the customer, connect them to the power supply and put them on the aging rack for room temperature aging. After completion, reel them, bag them, inspect them, put them into storage, and ship them out.
[0044] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A full-body luminous silicone neon colorful COB flexible light strip, characterized in that: It includes a flexible circuit board, a signal conductive circuit, an IC control chip, a flip-chip LED chip, and an LED conductive circuit. The flexible circuit board includes a front light-emitting unit and a back light-emitting unit. A folded hollow area is provided in the middle of the flexible circuit board. The front light-emitting unit and the back light-emitting unit are mirror-symmetrical with respect to the folded hollow area. The front light-emitting unit is provided with an IC control chip and a signal conductive slot, and the back light-emitting unit is provided with a signal conductive circuit. The signal conductive slot and the signal conductive circuit are mirror-symmetrical with respect to the folded hollow area. The front light-emitting unit and the back light-emitting unit are both provided with multiple groups of flip-chip LED chips. The flip-chip LED chip of the front light-emitting unit is connected to the IC control chip, and the flip-chip LED chip of the back light-emitting unit is connected to the IC control chip through the LED conductive circuit.
2. The all-over luminous silicone neon colorful COB flexible light strip according to claim 1 is characterized in that: Each group of flip-chip LED chips includes a flip-chip blue LED chip, a flip-chip red LED chip, and a flip-chip green LED chip. The LED conductive circuit includes a red conductive circuit, a blue conductive circuit, a green conductive circuit, and a positive electrode connection circuit. The flip-chip blue LED chip, the flip-chip red LED chip, and the flip-chip green LED chip of the front light-emitting unit are connected in parallel and then connected to an IC control chip. The flip-chip blue LED chip, the flip-chip red LED chip, and the flip-chip green LED chip of the back light-emitting unit are connected in parallel through the red conductive circuit, the blue conductive circuit, and the green conductive circuit, respectively, and then connected to the IC control chip; the positive electrode connection circuit is connected to the flip-chip blue LED chip, the flip-chip red LED chip, and the flip-chip green LED chip, respectively.
3. The all-over luminous silicone neon colorful COB flexible light strip according to claim 2 is characterized in that: The front light-emitting unit and the back light-emitting unit are both connected with a blue light current-limiting resistor, a red light current-limiting resistor, and a green light current-limiting resistor. The flip-chip blue light LED chip, the flip-chip red light LED chip, and the flip-chip green light LED chip of the front light-emitting unit and the back light-emitting unit are respectively connected in series with the blue light current-limiting resistor, the red light current-limiting resistor, and the green light current-limiting resistor.
4. The all-over luminous silicone neon colorful COB flexible light strip according to claim 1 is characterized in that: The signal conductive circuit includes a positive conductive circuit, a signal input / output conductive circuit, and a negative conductive circuit. The signal conductive slot includes a positive conductive slot, a signal input / output conductive slot, and a negative conductive slot. The positive conductive circuit and the positive conductive slot, the signal input / output conductive circuit and the signal input / output conductive slot, and the negative conductive circuit and the negative conductive slot are mirror-symmetrical with the folded hollow area as the axis of symmetry.
5. The all-over luminous silicone neon colorful COB flexible light strip according to claim 4 is characterized in that: After the flexible circuit board is folded in half, tin is added to the positive conductive slot, the signal input and output conductive slot, and the negative conductive slot, respectively, so that the back light-emitting unit is respectively connected to the positive conductive circuit, the signal input and output conductive circuit, and the negative conductive circuit of the front light-emitting unit.
6. The all-over luminous silicone neon colorful COB flexible light strip according to claim 1, characterized in that: The folded hollow area passes through the copper sheet inside the flexible circuit board, and the signal conductive line passes through the folded hollow area to connect the IC control chip and the flip-chip LED chip of the back light-emitting unit.
7. The all-over luminous silicone neon colorful COB flexible light strip according to claim 1, characterized in that: It also includes an IC current limiting resistor, an IC filter capacitor, and a signal input current limiting protection resistor. The IC current limiting resistor, IC filter capacitor, and signal input current limiting protection resistor are connected to the front light-emitting unit, and the IC control chip is respectively connected to the IC current limiting resistor, IC filter capacitor, and signal input current limiting protection resistor.
8. The all-over luminous silicone neon colorful COB flexible light strip according to claim 1, characterized in that: It also includes an LED chip protection colloid. After the flexible circuit board is folded in half, the LED chip protection colloid is coated on the flip-chip LED chips of the front light-emitting unit and the back light-emitting unit.
9. The all-over luminous silicone neon colorful COB flexible light strip according to claim 1, characterized in that: It also includes an external colloid, which includes a silicone light-gathering layer, a silicone diffusion layer, and a hand-feel oil protection layer. The silicone light-gathering layer wraps the folded flexible circuit board, the silicone diffusion layer wraps the outside of the silicone light-gathering layer, and the hand-feel oil protection layer wraps the outside of the silicone diffusion layer.
10. The all-over luminous silicone neon colorful COB flexible light strip according to claim 9, characterized in that: The silicone light-gathering layer is provided with an IC component avoidance position, and the IC control chip on the flexible circuit board is docked with the IC component avoidance position.