CN104194485B - A kind of fingerprint identification device and terminal unit - Google Patents
A kind of fingerprint identification device and terminal unit Download PDFInfo
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- CN104194485B CN104194485B CN201410425116.XA CN201410425116A CN104194485B CN 104194485 B CN104194485 B CN 104194485B CN 201410425116 A CN201410425116 A CN 201410425116A CN 104194485 B CN104194485 B CN 104194485B
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- Prior art keywords
- identification device
- fingerprint identification
- fingerprint
- ink
- sensor
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- 239000010410 layer Substances 0.000 claims abstract description 58
- 239000011241 protective layer Substances 0.000 claims abstract description 45
- 239000010409 thin film Substances 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 15
- 239000012752 auxiliary agent Substances 0.000 claims description 14
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- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
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- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 12
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- 239000002270 dispersing agent Substances 0.000 claims description 11
- -1 pottery Substances 0.000 claims description 11
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- 239000004952 Polyamide Substances 0.000 claims description 10
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 10
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- 229930195729 fatty acid Natural products 0.000 claims description 10
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- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- 229910052693 Europium Inorganic materials 0.000 claims description 6
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004584 polyacrylic acid Substances 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 5
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 5
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- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical group O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 4
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 4
- 125000005313 fatty acid group Chemical group 0.000 claims description 4
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- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 4
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- 239000010980 sapphire Substances 0.000 claims description 2
- 229910052594 sapphire Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000000976 ink Substances 0.000 description 89
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
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- 239000011701 zinc Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
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- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The present invention provides a kind of fingerprint identification device, including fingerprint recognition assembly, including: flexible circuit thin film and be formed at the fingerprint sensor on described flexible circuit thin film and control chip, and wherein said fingerprint sensor and described control chip electrical connection；Protective layer, is formed at least part of described fingerprint recognition assembly and is positioned at above described sensor；And, ink layer, luminous ink the ink layer formed is between described fingerprint recognition assembly and described protective layer.The present invention can reach at night or can show that in dim environment terminal unit and the purpose of position, fingerprint recognition region thereof, it is simple to user operation, is effectively improved user's impression.
Description
Technical field
The present invention relates to a kind of ink, particularly relate to a kind of luminous ink, use fingerprint identification device and the terminal unit of this luminous ink.
Background technology
Luminous ink is a kind of new type of safe ink, is applied to multiple fields.The problems such as it is short that the ink being made up of luminescent materials such as traditional zinc sulfide exists fluorescent lifetime, and brightness is low, light resistance is poor, wherein fluorescent lifetime is short is cause that luminous ink is difficult to the principal element effectively utilized.
It addition, along with the extensive use in people's daily life of terminal unit such as smart mobile phone, panel computer etc., its function is from strength to strength.But; terminal unit provide the user more simultaneously easily; also a lot of personal information and data can be carried; once this terminal unit is lost or stolen; owing to not carrying out protection or protective measure imperfection accordingly; then these information are easy to let out, and make troubles to user and lose.The function of keeping secret of traditional terminal unit with touch screen is to arrange such as software functions such as keypad lock on the terminal device, and realize secrecy by inputting password, start will input password every time, therefore seems cumbersome, and password is easily cracked and causes that function of keeping secret lost efficacy.Therefore increasing terminal unit equipment begins through fingerprint identification function and realizes the purpose of protection privacy.
The existing equipment being provided with touch screen, when terminal unit is unlocked by user, first to touch physical button or virtual key is lighted touch screen and is unlocked, if light is more dim in terminal unit local environment, such user may not know the position of concrete button, being easily caused maloperation, the experience sense affecting user is subject to.
Summary of the invention
The present invention provides a kind of fingerprint identification device using luminous ink and terminal unit, this luminous ink is to be mated with ink by luminous effect, make to make it possess excellent luminous effect under retaining ink effect premise, this luminous ink is used for fingerprint identification device, make at night or use in dark surrounds to be easy to find terminal unit on the one hand during terminal unit, also allow on the other hand finding the pressing of fingerprint recognition or wiping a stroke position, there is indicating effect.
According to an aspect of the present invention, it is provided that a kind of fingerprint identification device, including:
Fingerprint recognition assembly, including: flexible circuit thin film and be formed at the sensor on described flexible circuit thin film and control chip, wherein said sensor and the electrical connection of described control chip；
Protective layer, is formed at least part of described fingerprint recognition assembly and is positioned at above described sensor；And,
Ink layer, luminous ink the ink layer formed is between described fingerprint recognition assembly and described protective layer；
With parts by weight, described luminous ink includes:
Varnish 1 part, luminescent powder 0.5-3 part, binder 6-7.5 part, auxiliary agent 0.5-1 part；
Described luminescent powder is M1-xAl2O4: Rex, wherein M is one or more in Sr, Mg, Ba, Ca, and Re is one or more in Eu, Ce, Tb, Pr, Gd, 0.001≤x≤0.1；
Described binder is one or more in alkyd resin, phenolic resin, polyamide, epoxy resin, acrylic resin；
Described auxiliary agent is one or more in solvent, dispersant, desiccant, surfactant.
Preferably, described luminous ink is coated on fingerprint sensor upper surface and forms described ink layer.
Preferably, described luminous ink is coated on the basal surface of protective layer and forms described ink layer.
Preferably, also including support member, it is wrapped up at least in part by described fingerprint recognition assembly；Described support member has groove, with accommodating described control chip.
Preferably, described fingerprint recognition assembly wraps up at least two face of described support member.
Preferably, described support member is film adhered at least partially through binding agent and described flexible circuit.
Preferably, described binding agent includes PSA glue and hot-setting adhesive.
Preferably, described protective layer material includes UV glue, heat-curable glue or diamond like carbon.
Preferably, also include pressure cell, be arranged on the lower section of described fingerprint identification device.
Preferably, described luminescent powder is Sr0.985Al2O4: Eu0.015Or Mg0.935Al2O4: Eu0.005Ce0.06。
Preferably, described solvent is at least one in ethanol, n-butyl alcohol, isobutanol, ethylene glycol-ether, butyl acetate, Ketohexamethylene, glycidyl ether, oxolane, methyl ethyl ketone, Ketohexamethylene, propylene glycol, DMF, ethyl cellosolve acetate, ethyl acetate.
Preferably, described dispersant is at least one in glycol monoethyl ether, polytrimethylene glycol, Polyethylene Glycol, polyvinylpyrrolidone, polyacrylic acid, polyvinyl alcohol.
Preferably, described desiccant is fatty acid manganese or cobalt naphthenate.
According to another aspect of the present invention, it is provided that a kind of fingerprint identification device, including:
Fingerprint recognition assembly, including: substrate；Sensor, is formed on described substrate；Control chip, is installed on the basal surface of described substrate, and electrically connects with described sensor with the form of flip-chip；
Circuit board；
Molding layer, is formed on described circuit board, and is filled between described circuit board and described fingerprint recognition assembly；
Protective layer, is formed at least part of described fingerprint recognition assembly and is positioned at above described sensor；And
Ink layer, above-mentioned luminous ink the ink layer formed is between described molding layer and described protective layer；
With parts by weight, described luminous ink includes:
Varnish 1 part, luminescent powder 0.5-3 part, binder 6-7.5 part, auxiliary agent 0.5-1 part；
Described luminescent powder is M1-xAl2O4: Rex, wherein M is one or more in Sr, Mg, Ba, Ca, and Re is one or more in Eu, Ce, Tb, Pr, Gd, 0.001≤x≤0.1；
Described binder is one or more in alkyd resin, phenolic resin, polyamide, epoxy resin, acrylic resin；
Described auxiliary agent is one or more in solvent, dispersant, desiccant, surfactant.
Preferably, described luminous ink is coated on the basal surface of described protective layer and forms described ink layer.
Preferably, described luminescent powder is Sr0.985Al2O4: Eu0.015Or Mg0.935Al2O4: Eu0.005Ce0.06。
Preferably, described solvent is at least one in ethanol, n-butyl alcohol, isobutanol, ethylene glycol-ether, butyl acetate, Ketohexamethylene, glycidyl ether, oxolane, methyl ethyl ketone, Ketohexamethylene, propylene glycol, DMF, ethyl cellosolve acetate, ethyl acetate.
Preferably, described dispersant is at least one in glycol monoethyl ether, polytrimethylene glycol, Polyethylene Glycol, polyvinylpyrrolidone, polyacrylic acid, polyvinyl alcohol.
Preferably, described desiccant is fatty acid manganese or cobalt naphthenate.
According to another aspect of the present invention, it is provided that a kind of terminal unit, including above-mentioned fingerprint identification device.
According to technical scheme disclosed by the invention, this luminous ink is used for the fingerprint identification device of terminal unit by the present invention, at night or have indicative function in dim environment and can show that position, fingerprint recognition region, it is simple to user operation, is effectively improved user's impression.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention has the terminal unit embodiment of luminous effect；
Fig. 2 is the sectional view (only showing cover plate above section) in fingerprint identification area territory in Fig. 1 terminal unit；
Fig. 3 is the decomposition cross-sectional schematic that the present invention has fingerprint identification device second embodiment of luminous effect；
Fig. 4 is the sectional view that the present invention has fingerprint identification device the 3rd embodiment of luminous effect.
Wherein, description of reference numerals is as follows:
1: cover plate
2: viewing area
3: luminous type fingerprint recognition region
4: protective layer
5: ink layer
6: fingerprint sensor assembly
1 ': fingerprint identification device
10: fingerprint recognition assembly
101: flexible circuit thin film
102: sensor
103: control chip
104: substrate
20: support member
30: ink layer
40: protective layer
50: molding layer
60: basic ring
70: solder ball
80: circuit board
Detailed description of the invention
It is described more fully with example embodiment referring now to accompanying drawing.But, example embodiment can be implemented in a variety of forms, and is not understood as limited to embodiment set forth herein；On the contrary, it is provided that these embodiments make the present invention will fully and completely, and the design of example embodiment is conveyed to those skilled in the art all sidedly.Accompanying drawing labelling identical in the drawings represents same or similar structure, thus will omit repetition thereof.
Described feature, structure or characteristic can be combined in one or more embodiment in any suitable manner.In the following description, it is provided that many details are thus providing fully understanding embodiments of the present invention.But, one of ordinary skill in the art would recognize that, it does not have one or more in described specific detail, or adopt other method, constituent element, material etc., it is also possible to put into practice technical scheme.In some cases, known features, material or operation are not shown in detail or describe to avoid the fuzzy present invention.
In the embodiment of the present invention, the luminous ink of preparation specifically includes that varnish, and it can select varnish general in ink area；Luminescent powder, formula is M1-xAl2O4: Rex, wherein M is one or more in Sr, Mg, Ba, Ca, and Re is one or more in Eu, Ce, Tb, Pr, Gd, 0.001≤x≤0.1, is made by doped with rare-earth elements that the fluorescent lifetime of gained ink extends, brightness is increased；And binder and auxiliary agent.The particle size range of described luminescent powder requires to be 100nm～10um, it is preferred that 500nm～2um, sized too small, luminous effect is poor, too large in size, and it is high that ink has printed rear surface roughness, affects outward appearance.The rare earth material of doping can be europium, cerium, terbium etc., it is possible to selects, according to different colours demand, the rare earth element that other are suitable.Suitable binder and auxiliary agent is selected to make ink have suitable Viscous Criterion and good printing adaptability.
The embodiment 1 of luminous ink
Varnish 10g, luminescent powder is Sr0.985Al2O4: Eu0.0155g, binder includes alkyd resin 10g, phenolic resin 60g, and auxiliary agent includes solvent acetic acid butyl ester 3g, fatty acid manganese 2g.
Preparation method: by above-mentioned weight, mixes alkyd resin, phenolic resin, glycol monoethyl ether, fatty acid manganese and varnish, stirs 8h and is completely dissolved to resin, be cooled to 20～25 DEG C, add Sr at temperature 40～50 DEG C0.985Al2O4: Eu0.015, continue stirring 4h, be filtrated to get luminous ink.
The embodiment 2 of luminous ink
Varnish 10g, luminescent powder is Mg0.935Al2O4: Eu0.005Ce0.0610g, binder includes alkyd resin 10g, polyamide 55g, and auxiliary agent includes dispersant polytrimethylene glycol 3g, cobalt naphthenate 2g.
Preparation method: by above-mentioned weight, mixes alkyd resin, polyamide, polytrimethylene glycol, cobalt naphthenate and varnish, stirs 8h and is completely dissolved to resin, be cooled to 20～25 DEG C, add Mg at temperature 40～50 DEG C0.935Al2O4: Eu0.005Ce0.06, continue stirring 4h, be filtrated to get luminous ink.
The embodiment 3 of luminous ink
Varnish 10g, luminescent powder is Ba0.091Al2O4: Ce0.03Pr0.0620g, binder includes alkyd resin 10g, polyamide 60g, and auxiliary agent includes dispersant Polyethylene Glycol 5g, fatty acid manganese 2g.
Preparation method: by above-mentioned weight, mixes alkyd resin, polyamide, Polyethylene Glycol, fatty acid manganese and varnish, stirs 8h and is completely dissolved to resin, be cooled to 20～25 DEG C, add Ba at temperature 40～50 DEG C0.091Al2O4: Ce0.03Pr0.06, continue stirring 4h, be filtrated to get luminous ink.
The embodiment 4 of luminous ink
Varnish 10g, luminescent powder is Ca0.92Al2O4: Eu0.01Gd0.0630g, binder includes phenolic resin 10g, polyamide 65g, and auxiliary agent includes dispersant polyacrylic acid 3g, fatty acid manganese 2g.
Preparation method: by above-mentioned weight, mixes phenolic resin, polyamide, polyacrylic acid, fatty acid manganese and varnish, stirs 8h and is completely dissolved to resin, be cooled to 20～25 DEG C, add Ca at temperature 40～50 DEG C0.92Al2O4: Eu0.01Gd0.06, continue stirring 4h, be filtrated to get luminous ink.
Table 1 luminous ink performance indications of the present invention
| Luminous ink | Mobility | Fineness | Viscosity (Pas) |
| Embodiment 1 | 25℃/33mm | 0.5μ | 30℃/15.2 |
| Embodiment 2 | 25℃/35mm | 1μ | 30℃/16.1 |
| Embodiment 3 | 25℃/36mm | 0.5μ | 30℃/15.5 |
| Embodiment 4 | 25℃/33mm | 0.5μ | 30℃/16.0 |
It is shown that product meets ink standards, it is possible to use.
Table 2 luminous ink of the present invention compares with existing zinc sulfide ink light intensity decays Changing Pattern:
| Time (h) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Zinc sulfide ink |
| 1 | 600 | 620 | 610 | 600 | 30 |
| 2 | 260 | 270 | 265 | 255 | 8 |
| 3 | 90 | 95 | 92 | 88 | 2 |
| 5 | 40 | 45 | 42 | 38 | 0 |
By result above it can be seen that the luminous ink of the present invention is basically identical with the luminous intensity attenuation law of conventional vulcanized zinc luminous printing ink, but the light intensity of the conventional vulcanized zinc of light strength ratio of the luminous ink of the present invention is higher, and therefore persistence is longer.Luminescent powder in the luminous ink of the present invention is preferably photo-induced energy storage luminescent powder, has light storage function, stable chemical performance, and pollution-free, it by day or absorbs sunlight 10～30min under illumination condition, just can automatic continuous luminous more than 5h.This luminous ink product is nontoxic without radiation, and the ink layer of formation is more than 10 years service life.
Meanwhile, the present invention provides a kind of fingerprint identification device.Fingerprint identification device such as may include that fingerprint sensor, velocity sensor and is electrically connected to the control circuit of fingerprint sensor and velocity sensor.The electrode of fingerprint sensor and velocity sensor is formed at the top surface of substrate by modes such as etchings.Protective layer is formed on fingerprint sensor and velocity sensor, thinks that sensor provides and electrically isolates and mechanical protection.The ink layer formed by above-mentioned luminous ink is between fingerprint sensor and protective layer.Alternatively, luminous ink can be coated on fingerprint sensor upper surface, it is also possible to being coated on the basal surface of protective layer and form ink layer, then the electrode of fingerprint sensor can also be formed at the basal surface of protective layer further.
Fingerprint identification device disclosed by the invention is integrated in screen or the shell of terminal unit, and it is positioned on the screen of terminal unit or the top surface of shell, so that when the finger of user contacts the top surface of terminal unit, the distance of fingerprint sensor and finger is in 250 μm.In configuration at least in part, when fingerprint identification device can be configured as the top surface of finger contact terminal unit of user, the distance of fingerprint sensor therein and finger is in 200 μm, it is preferable that in 150 μm, more preferably in 100 μm, what is more can in 50 μm.
In certain embodiments, it is possible to provide an one chip controls at least one of function of display screen, touch screen and fingerprint identification device.Additionally, the top surface of the terminal unit comprising fingerprint sensor in the present invention is smooth or substantially smooth.Display screen and fingerprint identification device are configured to integrate and have identical mode of operation, or are configured to the single component that terminal unit comprises.
The fingerprint identification device of the present invention is a user interface housing of terminal unit, for instance for a button in terminal unit, is integrated in terminal unit, for instance smart mobile phone.Its size can be designed adaptively because of the difference of terminal unit.Adaptive two-dimensional, for instance square or rectangular, it is possible to for 4mm × 1mm, 4mm × 4mm, 5mm × 15mm, 10mm × 10mm or 10mm × 15mm etc..Adaptive diameter, for instance for circular or oval, it is possible to for 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm etc..The above-mentioned size enumerated is merely illustrative, and the present invention is not limited.Additionally, the size of fingerprint identification device with sensor therein be also one-dimensional sensor or dimension sensor relevant.
The shape of fingerprint identification device can be any physical form, including: circle, ellipse, square, rectangle, trapezoidal, triangle etc., the present invention is not limited.Smart mobile phone or panel computer generally use the substrate with high gloss as its cover plate.The material of these cover plates is generally glass, strengthening glass, transparent plastic, acrylic acid or has the material of any high-gloss surface.In order to adapt in such terminal unit, the top surface of the housing of fingerprint identification device is also required to the surface with high gloss, is mated with the surface with surrounding.The material of the top surface of the housing of fingerprint identification device, for instance can be glass, plastics etc..In configuration at least partly, fingerprint identification device can obtain outward appearance and the sense of touch of the housing effect same with terminal unit.
Fingerprint sensor in the fingerprint identification device of the present invention can also with touch sensor (touchsensor) collaborative work of terminal unit.Same control chip is used to control touch sensor circuit and fingerprint sensor circuit.This difunctional controller can be integrated in fingerprint identification device, or is electrically connected with fingerprint identification device by flexible PCB.
The first embodiment of fingerprint identification device
The terminal electronic device of the present invention is for the mobile phone shown in Fig. 1, and 1 is the cover plate of mobile phone, and 2 is the viewing area of touch screen, and 3 is luminous type fingerprint recognition region.As in figure 2 it is shown, the fingerprint identification device in luminous type fingerprint recognition region 3 includes: protective layer 4, ink layer 5 and fingerprint sensor assembly 6.Ink layer 5 is formed between fingerprint sensor assembly 6 and protective layer 4.
Ink layer 5 can adopt the luminous ink of prior art, or adopts the luminous ink in above-described embodiment, is formed by being coated with.This paint-on technique can adopt silk screen printing or ink-jet printing technology, and the present invention is not limited.Ink layer 5 can be formed on fingerprint sensor assembly 6 upper surface, it is also possible to is formed on the basal surface of protective layer 4.Ink layer 5 can be shown as yellow, green, colour etc., can select different luminous inks according to different colours demand, and the present invention is not limited.This ink layer 5 ink film thickness can be 30～50 μm, has good luminous effect under this thickness.
Second embodiment of fingerprint identification device
Fig. 3 is the decomposition cross-sectional schematic that the present invention has the fingerprint identification device of luminous effect.It should be noted that, this figure is the decomposing schematic representation of fingerprint identification device structure, in order to more clearly illustrate the structure of fingerprint identification device, directly not connecting in figure between each assembly, it cannot be used for the annexation between each assembly of fingerprint identification device of the restriction present invention.
As it is shown on figure 3, fingerprint identification device 1 ' including: fingerprint recognition assembly 10, support member 20, ink layer 30 and protective layer 40.Fingerprint recognition assembly 10 includes: flexible circuit thin film 101 and be formed at the sensor 102 on flexible circuit thin film 101 and control chip 103.
Wherein protective layer 40 is positioned at the top of fingerprint recognition assembly 10, to fingerprint recognition assembly 10, especially sensor 102 to be protected.Protective layer 40 can pass through spraying technology or printing technology is formed, and its material such as includes hard resin layer or diamond like carbon (Diamond-likeCarbon, DLC).In certain embodiments; protective layer 40 can also be formed by the material of glass, pottery, sapphire, quartz or other durables, for instance the organic films such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyimides (PI).Protective layer 40 is such as a hard conating (hardcoating).Additionally, protective layer 40 can also be directly the cover plate (such as glass or strengthening glass etc.) of terminal unit.
Ink layer 30 is formed between fingerprint recognition assembly 10 and protective layer 40.Ink layer 30 can adopt the luminous ink of prior art, or adopts the luminous ink in above-described embodiment to be formed by being coated with, and this paint-on technique can adopt silk screen printing or ink-jet printing technology, and the present invention is not limited.Ink layer 30 can be formed on the fingerprint sensor upper surface of fingerprint recognition assembly 10, it is also possible to is formed on the basal surface of protective layer 40.Ink layer 30 can embody with the form of color layers, and it can be shown as yellow, green, colour etc., can select different luminous inks according to different colours demand, and the present invention is not limited.Additionally, at protective layer 40 or under protective layer 40 and ink layer 30, it is also possible to including other layers, the present invention is not limited.
The thickness of the protective layer 40 in the fingerprint identification device 1 ' of the embodiment of the present invention is such as 0.05mm; the thickness of ink layer 30 is such as 0.01mm; the thickness of the binding agent between ink layer 30 and fingerprint recognition assembly 10 is such as 0.01mm, is formed with the thickness of flexible circuit thin film 101 of sensor 102 and control chip 103 such as 0.06mm.Therefore, the fingerprint identification device 1 ' of the embodiment of the present invention can provide very thin thickness, to meet terminal unit to the lightening demand of its integrated package.Above-mentioned size is merely cited for, and the unrestricted present invention.
Flexible circuit thin film 101 can be such as Kapton (Polyimidefilm, PIfilm), as shown in FIG., it is possible to be made up of two layers of polyimide resin (Polyimideresin, PIresin).
Sensor 102 can be formed on flexible circuit thin film 101.Including at least one sensing element, to sense ridge and the paddy of user's finger print, thus the fingerprint of user is identified.Sensor 102 can also can be two-dimensional structure for one-dimentional structure, and the present invention is not limited.
Sensor 102 in the present invention can be that formula sensor is drawn in the wiping of distribution in strip type, it is also possible to for the pressing type sensor being distributed in array, the present invention is not limited.In addition, sensor 102 can also be combined with the element performing the sensing of the optics to the fingerprint of user, infrared sensing or other sensings or work in combination, and these elements itself are alternatively coupled to certain other features of the fingerprint of the epidermis of user's finger, the subcutaneous part of user's finger or expression user.
As it is shown on figure 3, support member 20 is wrapped up by fingerprint recognition assembly 10, and fingerprint recognition assembly 10 has wrapped up four faces of support member 20.Fingerprint recognition assembly 10 can closely wrap up support member 20, namely two limits of fingerprint recognition assembly 10 seam can between do not stay gap, can not also closely wrap up support member 20, namely as shown in FIG., leaving a gap between two limits of fingerprint recognition assembly 10 seam, the present invention is not limited.
Engage at least partially through binding agent between flexible circuit thin film 101 with support member 20, with fixing fingerprint recognition assembly 10 and support member 20.For example, it is possible to as shown in FIG., binding agent (in figure shown in black part) is only used to engage on horizontal plane, it is also possible to using adhesive bond with fingerprint recognition assembly 10 on any surface that support member 20 contacts, the present invention is not limited.Binding agent is such as pressure sensitive adhesive (PSA) and hot-setting adhesive.
In order to house control chip 103, a part is dug up on a surface of support member 20, forms a groove, with accommodating control chip 103.In certain embodiments, in order to avoid making control chip 103 produce the phenomenon of damage because user's finger presses fingerprint identification device 1 ', the height diging up part on support member 20 can a little higher than control chip 103, when making pressing, support member 20 will not touch control chip, thus avoiding the destruction to control chip 103.
3rd embodiment of fingerprint identification device
Fig. 4 is the sectional view that the present invention has fingerprint identification device the 3rd embodiment of luminous effect.The 3rd embodiment shown in Fig. 4 and the second embodiment shown in Fig. 3 are distinctive in that herein below, and fingerprint identification device 1 ' including: fingerprint recognition assembly 10, ink layer 30, protective layer 40, molding layer 50 and circuit board 80.Fingerprint recognition assembly 10 includes: sensor 102, control chip 103 and substrate 104.
Fingerprint recognition assembly 10 is arranged on circuit board 80, and adopts BGA (BallGridArray, BGA) packaged type to be packaged between circuit board 80.Fingerprint recognition assembly 10 is electrically connected with circuit board 80 by multiple BGA solder ball (SolderBall) 70.Molding layer 50 is formed on circuit board 80, is filled between fingerprint recognition assembly 10 and circuit board 80.The material that molding layer 50 adopts is such as epoxy resin mould moulding (EpoxyModelingCompound, EMC).
Protective layer 40 is positioned at the top of at least part of fingerprint recognition assembly 10, to fingerprint recognition assembly 10, especially sensor 102 to be protected.
Ink layer 30 is formed between molding layer 50 and protective layer 40.Ink layer 30 can adopt the luminous ink of prior art, or adopts the luminous ink in above-described embodiment to be formed by being coated with, and this paint-on technique can adopt silk screen printing or ink-jet printing technology, and the present invention is not limited.Ink layer 30 can be formed on the basal surface of protective layer 40.Ink layer 30 can embody with the form of color layers, and it can be shown as yellow, green, colour etc., can select different luminous inks according to different colours demand, and the present invention is not limited.Additionally, at protective layer 40 or under protective layer 40 and ink layer 30, it is also possible to including other layers, the present invention is not limited.
Sensor 102 in fingerprint recognition assembly 10 can be formed on substrate 104 top surface.Including at least one sensing element, to sense ridge and the paddy of user's finger print, thus the fingerprint of user is identified.Sensor 102 can also can be two-dimensional structure for one-dimentional structure, and the present invention is not limited.
Control chip 103 is arranged on the basal surface of substrate 104 with flip-chip (flipchip) form, and is electrically connected by substrate 104 and sensor 102, processes so that the signal of sensor 102 is transferred in control chip 103.
Fingerprint identification device 1 ' can also include: basic ring 60.Basic ring 60 has top opening, covers on the fingerprint recognition assembly 10 being formed with protective layer 40, is placed in one by fingerprint recognition assembly 10, is used for being formed the exterior contour of fingerprint identification device 1 '.The material of basic ring 60 is such as metal, plastics or PEEK (polyetheretherketone, polyether-ether-ketone resin) material, and it has the features such as wear-resisting, high temperature resistant, corrosion-resistant.The top surface of basic ring 60 can be concordant with the end face of protective layer 40, it is also possible to higher than the end face of protective layer 40.
The fingerprint identification device of the embodiment of the present invention can be integrated in touch screen or the housing of terminal unit such as smart mobile phone, panel computer etc., it is possible to the electronic equipment such as terminal unit such as ATM being applied to bank, but the present invention is not limited.For example, it is possible to use with the control knob of terminal unit or switch element combination, it is also possible to be directly embedded in the cover-plate glass of terminal unit or housing and be used alone.In a word, according to the situation of terminal unit, adaptive adjustment can be carried out, with user-friendly.When control knob or the switch element of fingerprint identification device with terminal unit combine when using, also need to be provided with pressure cell in the lower section of fingerprint identification device, to sense user's pressing operation when operating this control knob or switch element.The electronic equipment of terminal is typically configured as and includes: display screen, touch screen, cover-plate glass, storage, SOC(system on a chip) (systemonchip), CPU, GPU, internal memory, Wi-Fi connection, bluetooth connection, USB connection, battery, external power supply, computer-readable media and software etc..
The fingerprint identification device that the embodiment of the present invention provides, packaging technology is simple, has less structure, can meet the terminal unit lightening demand for its integrated package, and be easily mounted in terminal unit, effectively improves production yield and efficiency.It is provided with luminous ink layer 30 due in the fingerprint identification device that the embodiment of the present invention provides, thus to evening or can show that terminal unit and position, fingerprint recognition region in dim environment, it is simple to user operation, it is effectively improved user's impression.
More than it is particularly shown and described the illustrative embodiments of the present invention.It should be understood that the invention is not restricted to disclosed embodiment, on the contrary, it is intended to contain the various amendments and equivalent replacement that comprise within the scope of the appended claims.
Claims (19)
1. a fingerprint identification device, it is characterised in that including:
Fingerprint recognition assembly, including: flexible circuit thin film and be formed at the fingerprint sensor on described flexible circuit thin film and control chip, wherein said fingerprint sensor and the electrical connection of described control chip；
Protective layer, is formed at least part of described fingerprint recognition assembly and is positioned at above described sensor；And,
Ink layer, luminous ink the ink layer formed is between described fingerprint recognition assembly and described protective layer；
With parts by weight, described luminous ink includes:
Varnish 1 part, luminescent powder 0.5-3 part, binder 6-7.5 part, auxiliary agent 0.5-1 part；
Described luminescent powder is M1-xAl2O4: Rex, wherein M is one or more in Sr, Mg, Ba, Ca, and Re is one or more in Eu, Ce, Tb, Pr, Gd, 0.001≤x≤0.1；
Described binder is one or more in alkyd resin, phenolic resin, polyamide, epoxy resin, acrylic resin；
Described auxiliary agent is one or more in solvent, dispersant, desiccant, surfactant.
2. fingerprint identification device as claimed in claim 1, it is characterised in that described luminous ink is coated on described fingerprint sensor upper surface and forms described ink layer.
3. fingerprint identification device as claimed in claim 1, it is characterised in that described luminous ink is coated on the basal surface of described protective layer and forms described ink layer.
4. fingerprint identification device as claimed in claim 1, it is characterised in that also including support member, it is wrapped up at least in part by described fingerprint recognition assembly；Described support member has groove, with accommodating described control chip.
5. fingerprint identification device as claimed in claim 4, it is characterised in that described fingerprint recognition assembly wraps up at least two face of described support member.
6. fingerprint identification device as claimed in claim 4, it is characterised in that described support member is film adhered at least partially through binding agent and described flexible circuit.
7. fingerprint identification device as claimed in claim 6, it is characterised in that described binding agent is the one in PSA glue and hot-setting adhesive.
8. fingerprint identification device as claimed in claim 1, it is characterised in that described protective layer material is the one in glass, pottery, sapphire, quartz, resin hard layer and diamond-like materials coating.
9. fingerprint identification device as claimed in claim 1, it is characterised in that described luminescent powder is Sr0.985Al2O4: Eu0.015Or Mg0.935Al2O4: Eu0.005Ce0.06。
10. fingerprint identification device as claimed in claim 1, it is characterized in that, described solvent is at least one in ethanol, n-butyl alcohol, isobutanol, ethylene glycol-ether, butyl acetate, Ketohexamethylene, glycidyl ether, oxolane, methyl ethyl ketone, propylene glycol, DMF, ethyl cellosolve acetate, ethyl acetate.
11. fingerprint identification device as claimed in claim 1, it is characterised in that described dispersant is at least one in glycol monoethyl ether, polytrimethylene glycol, Polyethylene Glycol, polyvinylpyrrolidone, polyacrylic acid, polyvinyl alcohol.
12. fingerprint identification device as claimed in claim 1, it is characterised in that described desiccant is fatty acid manganese or cobalt naphthenate.
13. a fingerprint identification device, it is characterised in that including:
Fingerprint recognition assembly, including: substrate；Sensor, is formed on described substrate；Control chip, is installed on the basal surface of described substrate, and electrically connects with described sensor with the form of flip-chip；
Circuit board；
Molding layer, is formed on described circuit board, and is filled between described circuit board and described fingerprint recognition assembly；
Protective layer, is formed at least part of described fingerprint recognition assembly and is positioned at above described sensor；And
Ink layer, luminous ink the ink layer formed is between described molding layer and described protective layer；
With parts by weight, described luminous ink includes:
Varnish 1 part, luminescent powder 0.5-3 part, binder 6-7.5 part, auxiliary agent 0.5-1 part；
Described luminescent powder is M1-xAl2O4: Rex, wherein M is one or more in Sr, Mg, Ba, Ca, and Re is one or more in Eu, Ce, Tb, Pr, Gd, 0.001≤x≤0.1；
Described binder is one or more in alkyd resin, phenolic resin, polyamide, epoxy resin, acrylic resin；
Described auxiliary agent is one or more in solvent, dispersant, desiccant, surfactant.
14. fingerprint identification device as claimed in claim 13, it is characterised in that described luminous ink is coated on the basal surface of described protective layer and forms described ink layer.
15. fingerprint identification device as claimed in claim 13, it is characterised in that described luminescent powder is Sr0.985Al2O4: Eu0.015Or Mg0.935Al2O4: Eu0.005Ce0.06。
16. fingerprint identification device as claimed in claim 13, it is characterized in that, described solvent is at least one in ethanol, n-butyl alcohol, isobutanol, ethylene glycol-ether, butyl acetate, Ketohexamethylene, glycidyl ether, oxolane, methyl ethyl ketone, propylene glycol, DMF, ethyl cellosolve acetate, ethyl acetate.
17. fingerprint identification device as claimed in claim 13, it is characterised in that described dispersant is at least one in glycol monoethyl ether, polytrimethylene glycol, Polyethylene Glycol, polyvinylpyrrolidone, polyacrylic acid, polyvinyl alcohol.
18. fingerprint identification device as claimed in claim 13, it is characterised in that described desiccant is fatty acid manganese or cobalt naphthenate.
19. a terminal unit, it is characterised in that include the fingerprint identification device described in any one of claim 1-18.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104751133A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751123A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751132A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751127A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751126A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751128A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751125A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751134A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751124A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN104751131A (en) * | 2015-03-06 | 2015-07-01 | 南昌欧菲生物识别技术有限公司 | Fingerprint identification device, touch screen and electronic equipment |
| CN105005762B (en) * | 2015-06-24 | 2018-10-12 | 广东金龙机电有限公司 | A kind of fingerprint module making method and fingerprint module |
| CN106336725A (en) * | 2015-07-16 | 2017-01-18 | 上海箩箕技术有限公司 | Printing ink, and imaging module and coloring method thereof |
| CN105585898B (en) * | 2015-12-21 | 2019-07-12 | 滁州金桥德克新材料有限公司 | A kind of UV coating dumb light ink and preparation method thereof |
| CN105694583A (en) * | 2016-03-15 | 2016-06-22 | 安徽昂然节能环保科技有限公司 | Photoinduced energy-storing environment-friendly ink |
| CN106022301A (en) * | 2016-06-02 | 2016-10-12 | 林梓梁 | Easy-to-find fingerprint identification device and terminal |
| CN108537097A (en) * | 2017-03-06 | 2018-09-14 | 上海箩箕技术有限公司 | Fingerprint imaging module and electronic equipment |
| CN108881522B (en) * | 2017-05-08 | 2024-03-22 | 蓝思科技（长沙）有限公司 | White mobile phone panel carrying capacitive fingerprint module and manufacturing method thereof |
| TWI628600B (en) * | 2017-09-12 | 2018-07-01 | 速博思股份有限公司 | Electronic apparatus with embedded fingerprint sensing module |
| CN107652739A (en) * | 2017-09-22 | 2018-02-02 | 南昌欧菲生物识别技术有限公司 | Anti-soil film, fingerprint module, the preparation method of anti-soil film |
| CN109934063B (en) * | 2017-12-18 | 2022-11-15 | 江西欧迈斯微电子有限公司 | Handheld terminal and fingerprint identification module thereof |
| CN110032913A (en) * | 2018-01-11 | 2019-07-19 | 南昌欧菲生物识别技术有限公司 | Protective film, fingerprint recognition mould group and the terminal of fingerprint recognition mould group |
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Address after: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Patentee after: Nanchang OFilm Tech. Co.,Ltd. Patentee after: Ophiguang Group Co.,Ltd. Patentee after: SUZHOU OFILM TECH Co.,Ltd. Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee before: OFilm Microelectronics Technology Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: OFilm Tech Co.,Ltd. Patentee before: SUZHOU OFILM TECH Co.,Ltd. Address after: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee after: OFilm Microelectronics Technology Co.,Ltd. Patentee after: Nanchang OFilm Tech. Co.,Ltd. Patentee after: OFilm Tech Co.,Ltd. Patentee after: SUZHOU OFILM TECH Co.,Ltd. Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi Patentee before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd. Patentee before: Nanchang OFilm Tech. Co.,Ltd. Patentee before: Shenzhen OFilm Tech Co.,Ltd. Patentee before: SUZHOU OFILM TECH Co.,Ltd. |
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