CN204806118U - Light source circuit of biological identification module - Google Patents
Light source circuit of biological identification module Download PDFInfo
- Publication number
- CN204806118U CN204806118U CN201520524069.4U CN201520524069U CN204806118U CN 204806118 U CN204806118 U CN 204806118U CN 201520524069 U CN201520524069 U CN 201520524069U CN 204806118 U CN204806118 U CN 204806118U
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- Prior art keywords
- plastic rectangular
- hole
- rectangular substrate
- substrate frame
- identification module
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Abstract
The utility model discloses a light source circuit of biological identification module, including plastic rectangular base plate frame and a plurality of LED emitting diode, this plastic rectangular base plate frame lower surface outside -in set gradually along the annular positive pole metal line and the annular negative pole metal wire of circumference distribution, and plastic rectangular base plate frame upper surface leans on the marginal zone in the outside to be provided with a plurality of positive pole metal solder joint along circumference, and plastic rectangular base plate frame upper surface leans on inboard marginal zone to follow circumference and is provided with a plurality of negative pole metal solder joint, the distribution is located and is provided with first through -hole between positive pole metal solder joint and the annular positive pole metal line of plastic rectangular base plate frame upper surface, lower surface, and this first through -hole intussuseption is filled with first metal and leads electrical pillar, LED emitting diode just, the negative pole respectively with positive pole metal solder joint, negative pole metal electrical connection of solder joint, the diameter of first through -hole, second through -hole is 80-200 mu m. The utility model discloses guarantee that the illumination intensity who accepts equal, further improves the precision of biological identification module discernment around the fingerprint chip.
Description
Technical field
The utility model relates to a kind of circuit of light sources of bio-identification module, belongs to technical field of semiconductor encapsulation.
Background technology
Along with the development of development of Mobile Internet technology, security issues become increasingly urgent for mobile Internet terminal user identification information, because identity identification information is stolen and personation and cause the situation of user's economic loss to appear in the newspapers repeatly end.Conventional password formula identification scheme, also exists the problems such as the low and complex operation of low, the consuming time length of efficiency, security, gradually becomes the short slab problem that the development of current development of Mobile Internet technology is universal.Fingerprint identification technology as the unique biological characteristic of user can solve the problem effectively.
For the design of the circuit of light sources of this kind of optical finger print identification, before biological field, the design of relevant source circuit can not followed.
Summary of the invention
The utility model object is to provide a kind of circuit of light sources of bio-identification module, and the circuit of light sources of this bio-identification module ensures that the intensity of illumination that fingerprint chip surrounding receives is equal, improves the precision of bio-identification module identification further.
For achieving the above object, the technical solution adopted in the utility model is: a kind of circuit of light sources of bio-identification module, comprise plastic rectangular substrate frame and several LED light emitting diodes, described plastic rectangular substrate frame middle section is vacancy section, this plastic rectangular substrate frame lower surface ecto-entad is disposed with the annular cathode metal line and annular negative metal line that circumferentially distribute, described plastic rectangular substrate frame upper surface marginal zone in the outer part is circumferentially provided with several cathode metal solder joints, described plastic rectangular substrate frame upper surface marginal zone in the inner part is circumferentially provided with several negative metal solder joints,
Distribution is provided with the first through hole between the cathode metal solder joint and annular cathode metal line of plastic rectangular substrate frame upper surface, lower surface, the first metallic conduction post is filled with in this first through hole, distribution is provided with the second through hole between the negative metal solder joint and annular negative metal line of plastic rectangular substrate frame upper surface, lower surface, be filled with the second metallic conduction post in this second through hole, the positive and negative electrode of described LED light emitting diode is electrically connected with cathode metal solder joint, negative metal solder joint respectively.
In technique scheme, further improved plan is as follows:
1., in such scheme, the LED light emitting diode number on the described upper and lower limit of plastic rectangular substrate frame is equal.
2., in such scheme, the LED light emitting diode number on the described left and right limit of plastic rectangular substrate frame is equal.
3., in such scheme, described LED light emitting diode number is 4 ~ 20.
4., in such scheme, the diameter of described first through hole, the second through hole is 80 ~ 200 μm.
5., in such scheme, the live width of described annular cathode metal line and annular negative metal line is 150 μm ~ 300 μm.
Because technique scheme is used, the utility model compared with prior art has following advantages and effect:
1. the circuit of light sources of the utility model bio-identification module, its mode being used in through hole on plastic rectangular substrate carries out being electrically connected the thickness effectively reducing circuit of light sources, this circuit carries out wiring and improves substrate utilization rate and reduce substrate area, because this design greatly reduces the volume of fingerprint recognition circuit of light sources on plastic rectangular substrate two sides.
2. the circuit of light sources of the utility model bio-identification module, LED light emitting diode number on its upper and lower limit of plastic rectangular substrate frame is equal, LED light emitting diode number on the left and right limit of plastic rectangular substrate frame is equal, the LED number of up and down, left and right is equal, and reserved pad is structurally symmetrical, ensure that the intensity of illumination that fingerprint chip surrounding receives is equal, improve the precision of bio-identification module identification further.
Accompanying drawing explanation
Accompanying drawing 1 is the main TV structure schematic diagram of circuit of light sources of the utility model bio-identification module;
What accompanying drawing 2 was accompanying drawing 1 looks up structural representation;
Accompanying drawing 3 is the A-A cross-sectional view of accompanying drawing 2.
In above accompanying drawing: 1, plastic rectangular substrate frame; 2, LED light emitting diode; 3, vacancy section; 4, annular cathode metal line; 5, annular negative metal line; 6, cathode metal solder joint; 7, negative metal solder joint; 8, the first through hole; 9, the first metallic conduction post; 10, the second through hole; 11, the second metallic conduction post.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is further described:
Embodiment 1: a kind of circuit of light sources of bio-identification module, comprise plastic rectangular substrate frame 1 and several LED light emitting diodes 2, described plastic rectangular substrate frame 1 middle section is vacancy section 3, this plastic rectangular substrate frame 1 lower surface ecto-entad is disposed with the annular cathode metal line 4 and annular negative metal line 5 that circumferentially distribute, described plastic rectangular substrate frame 1 upper surface marginal zone in the outer part is circumferentially provided with several cathode metal solder joints 6, and described plastic rectangular substrate frame 1 upper surface marginal zone in the inner part is circumferentially provided with several negative metal solder joints 7;
Distribution is provided with the first through hole 8 between the cathode metal solder joint 6 and annular cathode metal line 4 of plastic rectangular substrate frame 1 upper surface, lower surface, the first metallic conduction post 9 is filled with in this first through hole 8, distribution is provided with the second through hole 10 between the negative metal solder joint 7 and annular negative metal line 5 of plastic rectangular substrate frame 1 upper surface, lower surface, be filled with the second metallic conduction post 11 in this second through hole 10, the positive and negative electrode of described LED light emitting diode 2 is electrically connected with cathode metal solder joint 6, negative metal solder joint 7 respectively.
LED light emitting diode 2 number on the above-mentioned upper and lower limit of plastic rectangular substrate frame 1 is equal.
LED light emitting diode 2 number on the above-mentioned left and right limit of plastic rectangular substrate frame 1 is equal.
Above-mentioned LED light emitting diode 2 number is 8.
The diameter of above-mentioned first through hole 8, second through hole 10 is 100 μm, utilizes LDS laser boring and changes coating technology, becoming the connection via of positive and negative circuit.
Above-mentioned annular cathode metal line 4 and annular negative metal line 5 utilize LDS precision processing technology, and line width is 245 μm.
Embodiment 2: a kind of circuit of light sources of bio-identification module, comprise plastic rectangular substrate frame 1 and several LED light emitting diodes 2, described plastic rectangular substrate frame 1 middle section is vacancy section 3, this plastic rectangular substrate frame 1 lower surface ecto-entad is disposed with the annular cathode metal line 4 and annular negative metal line 5 that circumferentially distribute, described plastic rectangular substrate frame 1 upper surface marginal zone in the outer part is circumferentially provided with several cathode metal solder joints 6, and described plastic rectangular substrate frame 1 upper surface marginal zone in the inner part is circumferentially provided with several negative metal solder joints 7;
Distribution is provided with the first through hole 8 between the cathode metal solder joint 6 and annular cathode metal line 4 of plastic rectangular substrate frame 1 upper surface, lower surface, the first metallic conduction post 9 is filled with in this first through hole 8, distribution is provided with the second through hole 10 between the negative metal solder joint 7 and annular negative metal line 5 of plastic rectangular substrate frame 1 upper surface, lower surface, be filled with the second metallic conduction post 11 in this second through hole 10, the positive and negative electrode of described LED light emitting diode 2 is electrically connected with cathode metal solder joint 6, negative metal solder joint 7 respectively.
LED light emitting diode 2 number on the above-mentioned upper and lower limit of plastic rectangular substrate frame 1 is equal.
LED light emitting diode 2 number on the above-mentioned left and right limit of plastic rectangular substrate frame 1 is equal.
Above-mentioned LED light emitting diode 2 number is 14.
The diameter of above-mentioned first through hole 8, second through hole 10 is 150 μm, utilizes LDS laser boring and changes coating technology, becoming the connection via of positive and negative circuit.
Above-mentioned annular cathode metal line 4 and annular negative metal line 5 utilize LDS precision processing technology, and line width is 180 μm.
When adopting the circuit of light sources of above-mentioned new bio identification module, its mode being used in through hole on plastic rectangular substrate carries out being electrically connected the thickness effectively reducing circuit of light sources, this circuit carries out wiring and improves substrate utilization rate and reduce substrate area, because this design greatly reduces the volume of fingerprint recognition circuit of light sources on plastic rectangular substrate two sides; Secondly, LED light emitting diode number on its upper and lower limit of plastic rectangular substrate frame is equal, LED light emitting diode number on the left and right limit of plastic rectangular substrate frame is equal, the LED number of up and down, left and right is equal, and reserved pad is structurally symmetrical, ensure that the intensity of illumination that fingerprint chip surrounding receives is equal, improve the precision of bio-identification module identification further.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (6)
1. the circuit of light sources of a bio-identification module, it is characterized in that: comprise plastic rectangular substrate frame (1) and several LED light emitting diodes (2), described plastic rectangular substrate frame (1) middle section is vacancy section (3), this plastic rectangular substrate frame (1) lower surface ecto-entad is disposed with the annular cathode metal line (4) and annular negative metal line (5) that circumferentially distribute, described plastic rectangular substrate frame (1) upper surface marginal zone in the outer part is circumferentially provided with several cathode metal solder joints (6), described plastic rectangular substrate frame (1) upper surface marginal zone in the inner part is circumferentially provided with several negative metal solder joints (7),
Distribution is positioned at plastic rectangular substrate frame (1) upper surface, the first through hole (8) is provided with between the cathode metal solder joint (6) of lower surface and annular cathode metal line (4), the first metallic conduction post (9) is filled with in this first through hole (8), distribution is positioned at plastic rectangular substrate frame (1) upper surface, the second through hole (10) is provided with between the negative metal solder joint (7) of lower surface and annular negative metal line (5), the second metallic conduction post (11) is filled with in this second through hole (10), described LED light emitting diode (2) just, negative pole respectively with cathode metal solder joint (6), negative metal solder joint (7) is electrically connected.
2. the circuit of light sources of bio-identification module according to claim 1, is characterized in that: LED light emitting diode (2) number on the upper and lower limit of described plastic rectangular substrate frame (1) is equal.
3. the circuit of light sources of bio-identification module according to claim 1, is characterized in that: LED light emitting diode (2) number on the left and right limit of described plastic rectangular substrate frame (1) is equal.
4. the circuit of light sources of bio-identification module according to claim 1, is characterized in that: described LED light emitting diode (2) number is 4 ~ 20.
5. the circuit of light sources of bio-identification module according to claim 1, is characterized in that: the diameter of described first through hole (8), the second through hole (10) is 80 ~ 200 μm.
6. the circuit of light sources of bio-identification module according to claim 1, is characterized in that: the live width of described annular cathode metal line (4) and annular negative metal line (5) is 150 μm ~ 300 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520524069.4U CN204806118U (en) | 2015-07-17 | 2015-07-17 | Light source circuit of biological identification module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520524069.4U CN204806118U (en) | 2015-07-17 | 2015-07-17 | Light source circuit of biological identification module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204806118U true CN204806118U (en) | 2015-11-25 |
Family
ID=54590940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520524069.4U Expired - Fee Related CN204806118U (en) | 2015-07-17 | 2015-07-17 | Light source circuit of biological identification module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204806118U (en) |
-
2015
- 2015-07-17 CN CN201520524069.4U patent/CN204806118U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20160717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |