CN216795369U - Narrow width flexible line way board and lamp area thereof - Google Patents
Narrow width flexible line way board and lamp area thereof Download PDFInfo
- Publication number
- CN216795369U CN216795369U CN202220163606.7U CN202220163606U CN216795369U CN 216795369 U CN216795369 U CN 216795369U CN 202220163606 U CN202220163606 U CN 202220163606U CN 216795369 U CN216795369 U CN 216795369U
- Authority
- CN
- China
- Prior art keywords
- conductive
- unit
- conductive unit
- pad
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Led Device Packages (AREA)
Abstract
The utility model provides a narrow-width flexible circuit board and a lamp strip thereof, and relates to the technical field of lamp strips; a narrow-width flexible circuit board is sequentially provided with a top conductive circuit layer, an insulating base layer and a bottom conductive circuit layer from top to bottom, wherein the top conductive circuit layer comprises a first conductive unit, a second conductive unit and a third conductive unit which are arranged along the width direction of a flexible lamp strip, the third conductive unit is provided with a plurality of first resistance pads along the length direction of the flexible lamp strip, and the second conductive unit is provided with a plurality of second resistance pads corresponding to the first resistance pads; one side of the first conductive unit close to the upper edge of the flexible circuit board is a straight line, the other side of the first conductive unit is provided with an upward convex structure except for the direction of the first resistance pad and the second resistance pad, and the other parts of the first conductive unit are straight lines; the flexible circuit board has the advantages of more compact structure and smaller width; the sideline design of each conductive unit is more gentle, and the tearing of unnecessary waste material in the course of working of being convenient for is removed.
Description
Technical Field
The utility model relates to the technical field of lamp strips, in particular to a narrow-width flexible circuit board and a lamp strip thereof.
Background
The LED (light emitting diode) strip is a strip that is formed by assembling LEDs on a strip-shaped FPC (flexible printed circuit) or PCB (printed circuit board) hard board, and is named as a strip because the shape of the product is like a strip. Because the service life is long (the normal service life is generally 8-10 ten thousand hours), the energy is saved, the environment is protected, and the method gradually exposes the corners in various decoration industries.
The LED lamp strip is not only popular in the decoration industry because of energy conservation and environmental protection, but also small in size and suitable for the requirements of the decoration industry because the LED lamp strip is like a slender strip.
Some LED lamp areas need to be placed in thin and small groove, have higher requirement to the width in LED lamp area like this, need do the lamp area more carefully just can the adaptation demand, but need set up the pad in order to place electronic components on the lamp area, so, many conductive bands on lamp area top conductive circuit layer have obvious protruding structure so that set up the pad, nevertheless processing man-hour like this, the waste material on top conductive circuit layer can split easily when tearing off.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to overcoming at least one of the above-mentioned deficiencies in the prior art and providing a narrow width flexible circuit board that is easy to process and tear away waste material.
The technical scheme adopted by the utility model is that the narrow-width flexible circuit board is sequentially provided with a top conducting circuit layer, an insulating base layer and a bottom conducting circuit layer from top to bottom, wherein the bottom conducting circuit layer comprises a positive conducting unit and a negative conducting unit which are oppositely arranged from top to bottom; the top conducting circuit layer comprises a first conducting unit, a second conducting unit and a third conducting unit which are arranged along the width direction of the flexible lamp strip, the first conducting unit is provided with a plurality of first lamp bead bonding pads along the length direction of the flexible lamp strip, the third conducting unit is provided with a plurality of first resistance bonding pads along the length direction of the flexible lamp strip, the second conducting unit is provided with a plurality of second lamp bead bonding pads corresponding to the first lamp bead bonding pads, and a plurality of second resistance bonding pads corresponding to the first resistance bonding pads;
a first lamp bead pad on the first conductive unit penetrates through the insulating base layer to be communicated with the positive electrode/negative electrode conductive unit of the bottom conductive unit, and a first resistance pad on the third conductive unit penetrates through the insulating base layer to be communicated with the negative electrode/positive electrode conductive unit of the bottom conductive unit;
the first conductive unit, the second conductive unit and the third conductive unit are all of a strip-shaped structure, one side of the first conductive unit, which is close to the upper edge of the flexible circuit board, is a straight line, the other side of the first conductive unit is provided with an upward protruding structure in the direction of the first resistance pad and the second resistance pad, and the other parts of the first conductive unit and the second conductive unit are straight lines.
In the utility model, the corresponding first lamp bead pad and the second lamp bead pad are used for placing the lamp beads, the corresponding first resistor pad and the second resistor pad are used for placing the resistors, all the lamp beads arranged on the narrow-width flexible circuit board are connected in parallel, and all the resistors are also connected in parallel, so that the lamp beads or the resistors of other parts can be ensured to be normally conducted even if a certain part fails; in addition, the lamp strip can be cut, and lamp beads and/or resistors of all parts can still be normally conducted; therefore, in the utility model, the top conductive circuit layer comprises a first conductive unit, a second conductive unit and a third conductive unit which are all in a strip structure, one side of the first conductive unit, which is close to the upper edge of the flexible circuit board, is a straight line, the other side of the first conductive unit is only provided with an upward protruding structure in the direction of the first resistance pad and the second resistance pad, and the other parts of the first conductive unit and the second conductive unit are straight lines, so that redundant waste materials can be easily torn off in the processing process of the top conductive circuit board; if the edge of the first conductive unit is fluctuated and has larger amplitude, the first conductive unit is easy to break when the waste material is torn off, and the first conductive unit is difficult to tear off at one time. Moreover, when the edge of the first conductive unit is undulated and has a large amplitude, the lamp strip is compact in general structure, and the second conductive unit at least has one edge matched with the edge to form a similar shape, which is not beneficial to processing. More preferably, the top of the upwardly protruding structure in the first conductive unit is a straight line.
Furthermore, one side of the third conductive unit, which is close to the lower edge of the flexible lamp belt, is a straight line, the other side of the third conductive unit is a curve with a plurality of convex structures, and a concave structure is formed between the adjacent convex structures; the peak value of the curve is 1/5-1/4 of the width of the top conductive circuit layer.
The other side of the third conductive unit is a curve with a plurality of protruding structures, the protruding structures are arranged to arrange pads for placing components, and generally no protruding part is arranged at a position where the components do not need to be placed, so that space can be saved, and the pads are arranged at the position where the adjacent conductive units protrude. The peak value of the curve refers to the width of each position of the third conductive unit, the peak value of the curve is set to be 1/5-1/4 of the width of the top conductive circuit layer, the curve can be guaranteed to be flat, the amplitude of height fluctuation is small, and therefore tearing of redundant waste materials during processing of the top conductive circuit layer is facilitated.
Further, still be equipped with the first wiring pad of a plurality of on the first electrically conductive unit, first wiring pad sets up between first lamp pearl pad, still be equipped with the second wiring pad that a plurality of and first wiring pad are corresponding on the third electrically conductive unit, second wiring pad sets up between first resistance pad.
The first wiring bonding pad and the second wiring bonding pad correspond to each other in pairs, and the first wiring bonding pad and the second wiring bonding pad are convenient for an external power supply.
Further, the first connection pad and the first resistance pad are arranged on the third conductive unit at the position of the protruding structure.
The bump structure has enough space for arranging the bonding pad, and the other parts are flat structures, so that the space of the circuit board can be better utilized, the whole structure is compact, and the performance of the circuit board is not influenced.
Furthermore, one side of the first connection pad and one side of the second connection pad, which are close to the second conductive unit, are provided with protrusions, and the other sides are straight lines.
First wiring pad and second wiring pad are for external power supply, generally can be equipped with the through-hole on first wiring pad and second wiring pad and switch on with top conducting wire layer, it can be big than the through-hole to consider to occupy the position when external power supply connects, first wiring pad can be big than the through-hole with the area of second wiring pad, consider simultaneously that needs save space as far as possible, make the lamp area width narrower, first wiring pad is cloud shape structure with second wiring pad, only be straight line on first wiring pad and second wiring pad promptly, the centre of another side is equipped with the arch, with protruding structure corresponds on the third electrically conductive unit, the through-hole sets up in protruding department.
Furthermore, two through holes penetrating through to the bottom conductive circuit layer are formed in part of the first wiring bonding pad and the second wiring bonding pad.
The circuit board is convenient to cut from the middle of the first wiring bonding pad and the second wiring bonding pad, so that the circuit board has more cutting options.
Furthermore, the first lamp bead pad and the second lamp bead pad which correspond to each other are arranged at two ends of the first wiring pad and the second wiring pad which correspond to each other, so that a repeating unit is formed; the top conducting circuit layer consists of a plurality of repeating units and a plurality of corresponding first resistance welding discs and second resistance welding discs; at least one repeating unit is included between the adjacent corresponding first and second resistance pads.
Further, the width of the bottom conducting circuit layer is 7.7mm, and the distance between the positive conducting unit and the negative conducting unit is 1 mm.
When installing in the wide inslot of 8mm to needs, current lamp area generally is 8mm, places like this and will lead to circuit board bending deformation in the inslot, and sets up to 7.7mm, will just, the interval adjustment of negative pole conductive element is 1mm, can not change the overall layout of circuit board, can avoid circuit board bending deformation simultaneously.
A narrow-width flexible lamp strip comprises a top insulating film layer, the narrow-width flexible circuit board and a bottom insulating film layer which are sequentially arranged from top to bottom; lamp beads are arranged on the first lamp bead bonding pad and the second lamp bead bonding pad correspondingly, and resistors are arranged on the first resistor bonding pad and the second resistor bonding pad correspondingly.
The narrow-width flexible lamp strip is more compact in structure and smaller in width, and can be cut at any position.
Compared with the prior art, the utility model has the beneficial effects that: the flexible circuit board has a more compact structure and smaller width; the sideline design of each electrically conductive unit is more gentle, and the unnecessary waste material of the course of working of being convenient for tears and removes, simultaneously, by the lamp area of this flexible line way board preparation, can cut in optional position, and the application scope is wider.
Drawings
FIG. 1 is a top conductive trace layer structure of the present invention.
Fig. 2 is a partial enlarged view of the top conductive trace layer of the present invention.
FIG. 3 is a bottom conductive trace layer structure according to the present invention.
Fig. 4 is a diagram of a layer structure of a narrow-width flexible circuit board according to the present invention.
Fig. 5 is a layered structure diagram of the narrow-width flexible light strip of the present invention.
In the drawings are labeled: the LED packaging structure comprises a top conducting circuit layer-100, a first conducting unit-110, a first lamp bead bonding pad-111, a first wiring bonding pad-112, a second conducting unit-120, a second lamp bead bonding pad-121, a second resistance bonding pad-122, a third conducting unit-130, a first resistance bonding pad-131, a second wiring bonding pad-132 and a through hole-140; an insulation base layer-200; a bottom conducting circuit layer-300, a positive conducting unit-310 and a negative conducting unit-320; a top insulating film layer-400; bottom insulating film layer-500.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the utility model. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 to 4, a narrow-width flexible circuit board is sequentially provided with a top conductive circuit layer 100, an insulating base layer 200, and a bottom conductive circuit layer 300 from top to bottom, where the bottom conductive circuit layer 300 includes positive and negative conductive units 320 arranged oppositely from top to bottom; the top conductive circuit layer 100 comprises a first conductive unit 110, a second conductive unit 120 and a third conductive unit 130 which are arranged along the width direction of the flexible light strip, the first conductive unit 110 is provided with a plurality of first lamp bead bonding pads 111 along the length direction of the flexible light strip, the third conductive unit 130 is provided with a plurality of first resistance bonding pads 131 along the length direction of the flexible light strip, the second conductive unit 120 is provided with a plurality of second lamp bead bonding pads 121 corresponding to the first lamp bead bonding pads 111, and a plurality of second resistance bonding pads 122 corresponding to the first resistance bonding pads 131;
the first bead pad 111 of the first conductive element 110 penetrates through the insulating base layer 200 to be communicated with the positive/negative conductive element 320 of the bottom conductive element, and the first resistance pad 131 of the third conductive element 130 penetrates through the insulating base layer 200 to be communicated with the negative/positive conductive element 310 of the bottom conductive element;
the first conductive unit 110, the second conductive unit 120, and the third conductive unit 130 are all in a strip structure, one side of the first conductive unit 110 near the upper edge of the flexible printed circuit board is a straight line, and the other side is a straight line except for an upward protruding structure in the direction of the first resistance pad 131 and the second resistance pad 122.
In this embodiment, one side of the third conductive unit 130 close to the lower edge of the flexible light strip is a straight line, the other side is a curve with a plurality of protruding structures, and a concave structure is formed between adjacent protruding structures; the peak value of the curve is 1/5-1/4 of the width of the top conductive circuit layer 100.
In this embodiment, the first conductive unit 110 is further provided with a plurality of first connection pads 112, the first connection pads 112 are disposed between the first lamp bead pads 111, the third conductive unit 130 is further provided with a plurality of second connection pads 132 corresponding to the first connection pads 112, and the second connection pads 132 are disposed between the first resistance pads 131.
In this embodiment, the first wire pad 112 and the first resistance pad 131 are disposed on the third conductive unit 130 at the protruding structure.
In this embodiment, the first and second connection pads 112 and 132 have a protrusion on one side near the second conductive element 120 and a straight line on the other side.
In this embodiment, two through holes 140 penetrating to the bottom conductive trace layer 300 are disposed on a portion of the first and second bonding pads 112 and 132.
In this embodiment, the first bead pad 111 and the second bead pad 121 are disposed at two ends of the corresponding first connection pad 112 and the second connection pad 132, respectively, to form a repeating unit; the top conductive circuit layer 100 is composed of a plurality of repeating units and a plurality of corresponding first and second resistance pads 131 and 122; three repeating units are included between the adjacent corresponding first and second resistance pads 131 and 122.
In this embodiment, the width of the bottom conductive trace layer 300 is 7.7mm, and the pitch between the positive and negative conductive elements 320 is 1 mm.
At present lamp area decoration in-process, the width that is used for placing the groove in lamp area is the same with current lamp area occasionally, can lead to the lamp area of placing in the groove to warp like this, can cause the damage of certain degree to the lamp area. In order to place the lamp area in the groove smoothly, the width of lamp area needs to be adjusted. Because the structure of the lamp strip is compact, especially the arrangement on the top conductive circuit layer 100 is compact, and the components on the top conductive circuit layer 100 are arranged in a staggered manner, the side lines of the conductive units on the top layer electrical layer are uneven and the distance between the conductive units is very small, so that the space is saved, and meanwhile, various pads for placing the components can be well arranged. Therefore, when the width of the light strip needs to be adjusted to be smaller, it is difficult to adjust the width of each conductive unit to achieve the purpose, but if the distance between the conductive units is directly reduced to be smaller, the conductive units may have overlapping parts; or the gap is very small, and the connection line of the conductive unit is not flat, so that the top conductive circuit layer 100 is easily broken when the waste material is torn off in the processing process, which is not favorable for quick tearing off.
Based on the existing problems, the utility model provides a narrow-width flexible circuit board, which not only can make the whole structure more compact to reduce the width by adjusting the shape of each conductive unit on the top conductive circuit layer 100, but also is beneficial to tearing off waste materials once in the processing process; the specific scheme is as follows: one side of the first conductive unit 110 close to the upper edge is straight, and the other side is straight except for the upward convex structure in the direction of the first resistance pad 131 and the second resistance pad 122, and the convex height h1 of the convex structure does not exceed the highest height 1/8 of the first conductive unit 110, and the top of the convex structure is straight, so that the connection line on the other side of the first conductive unit 110 is relatively flat and easy to process, and the width of the first conductive unit 110 can be effectively shortened; similarly, one side of the third conductive unit 130 close to the lower edge of the flexible lamp strip is a straight line, the other side is a curve with a plurality of convex structures, and a concave structure is formed between adjacent convex structures; the peak value at the highest position of the curve is H2, the peak value at the lowest position of the curve is H3, the heights of H2 and H3 are 1/5-1/4 of the width H of the top conducting circuit layer 100, and the top of the convex structure and the bottom of the concave structure in the third conducting unit 130 are all straight lines, so that the design is also convenient to process and can effectively shorten the width of the third conducting unit 130; by shortening the widths of the first conductive unit 110 and the third conductive unit 130, the width of the top conductive circuit layer 100 can be effectively shortened to obtain a narrow-width lamp strip.
In this embodiment, the positions of the first lamp bead pad 111, the second lamp bead pad 121, the first resistor pad 131 and the second resistor pad 122 are designed such that the lamp beads mounted thereon are connected in parallel, and the resistors are also connected in parallel, so as to realize arbitrary cutting.
And, still be equipped with corresponding first wiring pad 112 and second wiring pad 132 between two adjacent lamp pearls, can make things convenient for external power supply's access. Meanwhile, the first and second wire bonding pads 112 and 132 are cloud-shaped and protrude only in the middle of one side, so as to reduce the area of the through holes 140 disposed on the first and second wire bonding pads 112 and 132 as much as possible on the premise of ensuring that the through holes can be normally conducted, so that the protruding height of the conductive unit is smaller, and a light strip with a smaller width is obtained.
Example 2
As shown in fig. 5, a narrow-width flexible light strip includes a top insulating film 400, a narrow-width flexible circuit board as described in embodiment 1, and a bottom insulating film 500, which are sequentially arranged from top to bottom; lamp beads are arranged on the first lamp bead pad 111 and the second lamp bead pad 121 correspondingly, and resistors are arranged on the first resistor pad 131 and the second resistor pad 122 correspondingly.
The narrow-width flexible lamp strip is more compact in structure, smaller in width and capable of being cut at any position.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.
Claims (9)
1. A narrow-width flexible circuit board is sequentially provided with a top conducting circuit layer, an insulating base layer and a bottom conducting circuit layer from top to bottom, wherein the bottom conducting circuit layer comprises a positive conducting unit and a negative conducting unit which are oppositely arranged from top to bottom; the top conducting circuit layer comprises a first conducting unit, a second conducting unit and a third conducting unit which are arranged along the width direction of the flexible lamp strip, and is characterized in that the first conducting unit is provided with a plurality of first lamp bead bonding pads along the length direction of the flexible lamp strip, the third conducting unit is provided with a plurality of first resistance bonding pads along the length direction of the flexible lamp strip, and the second conducting unit is provided with a plurality of second lamp bead bonding pads corresponding to the first lamp bead bonding pads and a plurality of second resistance bonding pads corresponding to the first resistance bonding pads;
a first lamp bead pad on the first conductive unit penetrates through the insulating base layer to be communicated with the positive electrode/negative electrode conductive unit of the bottom conductive unit, and a first resistance pad on the third conductive unit penetrates through the insulating base layer to be communicated with the negative electrode/positive electrode conductive unit of the bottom conductive unit;
the first conductive unit, the second conductive unit and the third conductive unit are all of a strip-shaped structure, one side of the first conductive unit, which is close to the upper edge of the flexible circuit board, is a straight line, and the other side of the first conductive unit is provided with an upward protruding structure in the direction of the first resistance pad and the second resistance pad, and the other parts of the first conductive unit, the second conductive unit and the third conductive unit are straight lines.
2. The narrow-width flexible circuit board according to claim 1, wherein one side of the third conductive unit, which is close to the lower edge of the flexible lamp strip, is a straight line, the other side is a curve with a plurality of convex structures, and concave structures are formed between adjacent convex structures; the peak value of the curve is 1/5-1/4 of the width of the top conducting circuit layer.
3. The narrow width flexible printed circuit board of claim 2, wherein the first conductive element further comprises a plurality of first connection pads disposed between the first bead pads, and the third conductive element further comprises a plurality of second connection pads corresponding to the first connection pads disposed between the first resistance pads.
4. The narrow width flexible wiring board of claim 3, wherein the first wire bond pad and the first resistance pad are disposed on the third conductive element at a raised structure.
5. The narrow width flexible wiring board of claim 3, wherein the first and second terminal pads have a protrusion on one side adjacent to the second conductive element and a straight line on the other side.
6. The narrow width flexible wiring board of claim 3, wherein two vias are provided through portions of said first and second terminal pads to the bottom conductive trace layer.
7. The narrow-width flexible circuit board according to claim 3, wherein the first and second bead pads are disposed at two ends of the corresponding first and second connection pads to form a repeating unit; the top conducting circuit layer consists of a plurality of repeating units and a plurality of corresponding first resistance bonding pads and second resistance bonding pads; at least one repeating unit is included between the adjacent corresponding first and second resistance pads.
8. The narrow width flexible circuit board of claim 1, wherein the width of the bottom conductive trace layer is 7.7mm, and the pitch between the positive and negative conductive elements is 1 mm.
9. A narrow-width flexible lamp strip is characterized by comprising a top insulating film layer, the narrow-width flexible circuit board as claimed in any one of claims 1 to 8 and a bottom insulating film layer which are sequentially arranged from top to bottom; lamp beads are arranged on the first lamp bead bonding pad and the second lamp bead bonding pad correspondingly, and resistors are arranged on the first resistor bonding pad and the second resistor bonding pad correspondingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220163606.7U CN216795369U (en) | 2022-01-20 | 2022-01-20 | Narrow width flexible line way board and lamp area thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220163606.7U CN216795369U (en) | 2022-01-20 | 2022-01-20 | Narrow width flexible line way board and lamp area thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216795369U true CN216795369U (en) | 2022-06-21 |
Family
ID=82014296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220163606.7U Active CN216795369U (en) | 2022-01-20 | 2022-01-20 | Narrow width flexible line way board and lamp area thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216795369U (en) |
-
2022
- 2022-01-20 CN CN202220163606.7U patent/CN216795369U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216795369U (en) | Narrow width flexible line way board and lamp area thereof | |
| CN111047993A (en) | Bendable transparent LED display screen and processing method | |
| JP5290543B2 (en) | Light emitting device | |
| CN113079625B (en) | Power-free high-voltage flexible circuit board and lamp strip thereof | |
| CN214481482U (en) | Short unit power-free high-voltage flexible circuit board and lamp strip thereof | |
| CN213783711U (en) | Double flexible line way board of short unit and lamp area | |
| CN210865434U (en) | Flexible transparent LED display screen | |
| CN211925457U (en) | Flexible LED lamp strip | |
| CN210348144U (en) | Lamp strip capable of improving assembly clearance | |
| CN210008010U (en) | Lamp strip structure and lamp strip | |
| CN107567206A (en) | Double-side conduction construction processing method, linear circuit plate processing method and line source | |
| CN211232483U (en) | LED lamp strip and LED lamps and lanterns | |
| CN217428423U (en) | High-density flexible circuit board and lamp strip thereof | |
| CN111457271A (en) | Flexible L ED lamp strip | |
| CN218450681U (en) | Flexible circuit board and lamp strip with same | |
| CN109148402B (en) | Light emitting diode packaging structure and manufacturing method thereof | |
| CN216820205U (en) | High-density arranged flexible circuit board and lamp strip thereof | |
| CN214535778U (en) | Flexible circuit board capable of being cut at will at multiple positions and lamp strip thereof | |
| CN114513895B (en) | High-density-arrangement flexible circuit board, lamp strip thereof and die cutting tool | |
| CN217241041U (en) | Flexible circuit board and lamp strip thereof | |
| CN219473517U (en) | Flexible LED lamp area | |
| CN212204125U (en) | Lamp belt | |
| CN212204126U (en) | LED lamp strip | |
| CN113015318B (en) | Flexible circuit board capable of being cut at will at multiple positions and lamp strip thereof | |
| CN218001194U (en) | LED lamp bead module with built-in resistor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |