CN116798079A - Luminous fingerprint identification module - Google Patents
Luminous fingerprint identification module Download PDFInfo
- Publication number
- CN116798079A CN116798079A CN202210405974.2A CN202210405974A CN116798079A CN 116798079 A CN116798079 A CN 116798079A CN 202210405974 A CN202210405974 A CN 202210405974A CN 116798079 A CN116798079 A CN 116798079A
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- CN
- China
- Prior art keywords
- light
- unit
- reflective layer
- disposed
- cover
- 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.)
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- 239000000758 substrate Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000000007 visual effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000000576 coating method Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Abstract
The invention relates to a luminous fingerprint identification module, which is characterized in that at least one light source is arranged on the periphery of a capacitive fingerprint sensing unit, a light guide unit is arranged between the capacitive fingerprint sensing unit and a cover body, after the light source is incident to the light guide unit, the light is uniformly refracted by the light guide unit, and then escapes through a preset light transmission area on the cover body, so that the luminous range is not limited by the position where the light source is arranged, and the light transmission area on the cover body can be projected outwards to form a preset pattern, so as to meet the design requirement of diversified visual effects.
Description
Technical Field
The invention relates to a fingerprint identification module, in particular to a module which is arranged in an electronic device and used for identifying fingerprints of users.
Background
Fingerprint recognition is commonly used in electronic devices nowadays, and as one of the technologies of user identification, a user must register a fingerprint of at least one finger in the electronic device in advance. When identification is required (e.g., unlock the electronic device, open a specific application, use a specific function, etc.), the electronic device senses the user's fingerprint and compares it with a pre-registered fingerprint to identify the user. The fingerprint identification module in the prior art is sometimes based on functionality or on attractive appearance, and a lighting effect needs to be added, for example, the fingerprint identification module has a lighting function with an original function key (such as a power key) and can display the on-off state of the original function, and the lighting effect is based on the functionality; for example, in order to increase the attractive force and the acousto-optic effect, the current electronic competition keyboards generally set all keys to be luminous so as to improve the overall visibility of the keyboard.
However, in the fingerprint identification module of the prior art, a fingerprint sensing unit is required to be provided to sense a fingerprint, and the fingerprint sensing unit cannot transmit light, so that the light emitting unit can only be arranged at the periphery of the fingerprint sensing unit, and the light emitting effect can only be manufactured at the periphery of the key with the fingerprint identification module, and the overall light emitting effect cannot be provided.
Disclosure of Invention
Accordingly, the present invention is improved against the prior art that the overall lighting effect cannot be provided, so as to provide lighting effect at any position of the whole key.
In order to achieve the above-mentioned object, the present invention provides a luminous fingerprint identification module, which comprises:
a substrate;
a capacitive fingerprint sensing unit disposed on the substrate;
the capacitive fingerprint sensing unit is arranged between the light guide unit and the substrate, and the light guide unit is provided with at least one light incident area;
at least one light source which is electrically connected with the substrate and is arranged outside the periphery of the capacitive fingerprint sensing unit relatively, wherein the light-emitting path of the light source is incident to the corresponding light-entering area of the light guide unit;
a cover body covering the light guide unit and having a light-transmitting region and a non-light-transmitting region, the light-transmitting region forming a pattern;
the light of the light source is transmitted outwards from the light-transmitting area of the cover body through the light guide unit.
The invention has the advantages that by arranging the light guide unit and the light inlet area, the light of the light source arranged at the periphery of the capacitive fingerprint sensing unit can still be projected outwards towards the right upper part of the capacitive fingerprint sensing unit, so that the light emitting range is not limited by the periphery of the capacitive fingerprint sensing unit, and the light emitting range can be designed at any position of the cover body to be projected outwards in cooperation with a pattern formed by the light transmitting area, thereby providing more flexible visual effect configuration.
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Drawings
FIG. 1 is a schematic diagram of the present invention disposed on a keyboard of an electronic device;
FIG. 2 is a schematic side cross-sectional view of a first embodiment of the present invention;
FIG. 3 is a schematic side cross-sectional view of a second embodiment of the present invention;
FIG. 4 is a schematic view of a first embodiment of the present invention;
FIG. 5 is a schematic side cross-sectional view of a third embodiment of the present invention;
FIG. 6 is a schematic side cross-sectional view of a fourth embodiment of the present invention;
fig. 7 is a schematic light-emitting diagram of a fifth embodiment of the present invention.
Wherein, the reference numerals:
1 fingerprint identification module
100 keyboard
101 pattern
10 substrate
20 capacitive fingerprint sensing unit
30 light guide unit
31 light-emitting surface
32 light incident region
40 light source
50 cover body
51 light-transmitting region
52 non-light-transmitting region
53 primer layer
54 color paint layer
60. 60A, 60B support unit
70. 70A first reflective layer
71 second reflective layer
Detailed Description
The structural and operational principles of the present invention are described in detail below with reference to the accompanying drawings:
the technical means adopted by the present invention to achieve the intended purpose of the present invention will be further described below with reference to the drawings, which are simplified for illustration purposes only, and the structure or method of the present invention will be described by describing the relationship between the elements and components of the present invention, so that the elements shown in the drawings are not represented in actual numbers, actual shapes, actual sizes, and actual proportions, the sizes or proportions of the sizes have been enlarged or simplified, thereby providing a better description, the actual numbers, actual shapes, or actual proportions of the sizes have been selectively designed and configured, and the detailed layout of the elements may be more complicated.
Referring to fig. 1 and 2, the luminous fingerprint recognition module 1 of the present invention can be disposed in any key of a keyboard 100 of an electronic device, and the fingerprint recognition module 1 includes a substrate 10, a capacitive fingerprint sensing unit 20, a light guiding unit 30, at least one light source 40, and a cover 50.
The substrate 10 has a circuit structure, the circuit structure of the substrate 10 is electrically connected to the capacitive fingerprint sensing unit 20, and the circuit structure of the substrate 10 is electrically connected to the light source 40.
The capacitive fingerprint sensing unit 20 is disposed on the substrate 10 and electrically connected to the substrate 10, and the capacitive fingerprint sensing unit 20 senses the fingerprint by sensing a capacitance change of the user after the user touches the substrate, and in one embodiment, the capacitive fingerprint sensing unit 20 has a sensing array, and the sensing array detects the capacitance change of the corresponding fingerprint to obtain a fingerprint image.
The capacitive fingerprint sensing unit 20 is disposed between the light guiding unit 30 and the substrate 10, the light guiding unit 30 has a light emitting surface 31 and at least one light incident region 32, the light guiding unit 30 is configured to uniformly refract the incident light to change the traveling path of the light, and guide the light to escape toward the light emitting surface 31. In an embodiment, the surface of the light guiding unit 30 is provided with a microstructure, and the microstructure can be disposed on at least one of the inner surface of the light guiding unit 30 near the cover 50 and the inner surface near the capacitive fingerprint sensing unit 20, and the microstructure can increase the diffusion effect of the light guiding unit 30.
The light source 40 is electrically connected to the substrate 10, the light source 40 is disposed opposite to the periphery of the capacitive fingerprint sensing unit 20, and the light emitting path of the light source 40 corresponds to the light incident area of the light guiding unit 30, so that the light of the light source 40 is incident into the light guiding unit 30 from the light incident area of the light guiding unit 30. In an embodiment, the light sources 40 are plural in number and are disposed outside the periphery of the capacitive fingerprint sensing unit 20 in a scattered manner.
In one embodiment (as shown in fig. 3), the width of the light guiding unit 30 corresponds to the width of the capacitive fingerprint sensing unit 20, the light source 40 is disposed at the periphery of the end surface of the light guiding unit 30, the light source 40 is fixed by a supporting unit 60A, the supporting unit 60A is disposed between the inner side surface of the cover 50 and the substrate 10, and the light of the light source 40 is projected into the light guiding unit 30 through a light incident area 32A formed by the end surface of the light guiding unit 30.
In an embodiment (as shown in fig. 2), the width of the light guiding unit 30 is greater than the width of the capacitive fingerprint sensing unit 20, the light incident area 32 of the light guiding unit 30 is disposed in an extending area between the light guiding unit 30 and the capacitive fingerprint sensing unit 20, the light of the light source 40 is projected into the light guiding unit 30 through the light incident area 32 formed by the extending area, the supporting unit 60 is disposed between the inner side surface of the cover 50 and the substrate 10, and is connected to the light guiding unit 30 to support the inner side surface of the cover 50, so that when a user touches the cover 50, the inner side surface of the cover 50 is completely supported by the supporting unit 60 and the light guiding unit 30, thereby improving the structural strength of the fingerprint recognition module 1.
The cover 50 covers the light guiding unit 30, and has a light-transmitting area 51 and a non-light-transmitting area 52, the light-emitting surface 31 of the light guiding unit 30 corresponds to the cover 50, the light-transmitting area 51 forms a pattern 101, and the pattern 101 can be a functional pattern for marking the key where the fingerprint identification module 1 is located or a decorative pattern. In an embodiment, the cover 50 is made of a transparent material, a primer layer 53 is disposed on a side of the cover 50 opposite to the light guiding unit 30 and corresponding to the non-transparent region 52, the primer layer 53 is used for shielding light so that the cover 50 can provide the non-transparent region 52, and a color paint layer 54 is disposed between the cover 50 and the primer layer 53, and the color paint layer 54 forms a base color of the non-transparent region 52 of the cover 50. In one embodiment (not shown), the cover 50 may be made of a non-transparent material, and at least one through hole is formed to form the transparent region 51.
Referring to fig. 1 and 4, when the light of the light source 40 enters the light guide unit 30 from the light entrance area 32 of the light guide unit 30, the light guide unit 30 uniformly refracts the entering light to change the traveling path of the light, and then the light escapes from the light exit surface 31 corresponding to the light transmission area 51 of the cover 50, so that the pattern 101 formed by the light transmission area 51 generates a light emitting effect by the dissipation of the light, and therefore, by the arrangement of the light guide unit 30, the light of the light source 40 can be guided to a desired range to emit light by the design of the light transmission area 51 and the non-light transmission area 52 of the cover 50, thereby forming a preset light emitting pattern 101.
In order to make the light more effectively transmitted, the invention can add a reflecting layer at a proper position to prevent the light from being dissipated outwards from a non-set area. In one embodiment (as shown in fig. 5), a first reflective layer 70 is disposed between the capacitive fingerprint sensing unit 20 and the light guiding unit 30 to prevent light from escaping from between the capacitive fingerprint sensing unit 20 and the light guiding unit 30, and the capacitive fingerprint sensing unit 20 of the present invention can function without receiving reflected light, or the first reflective layer 70 does not affect the function of the capacitive fingerprint sensing unit 20. In one embodiment (as shown in fig. 6), a first reflective layer 70A is disposed between the opaque region 52 of the cover 50 and the light guiding unit 30 to prevent light from escaping from between the cover 50 and the light guiding unit 30. In one embodiment (as shown in fig. 2 and 4), a first reflective layer 70 is disposed between the capacitive fingerprint sensing unit 20 and the light guiding unit 30 to prevent light from escaping from between the capacitive fingerprint sensing unit 20 and the light guiding unit 30, and a second reflective layer 71 is disposed between the opaque region 52 of the cover 50 and the light guiding unit 30 to prevent light from escaping from between the cover 50 and the light guiding unit 30. In an embodiment, the reflective layers 70, 70A, 71 are reflective coatings, which may be non-conductive coatings or may be coatings containing less than 20% by volume of metal powder, wherein the metal powder is used to enhance the reflective effect.
Taking the embodiment shown in fig. 2 and fig. 4 as an example, since the side surface of the light guiding unit 30 corresponding to the capacitive fingerprint sensing unit 20 is covered by the first reflective layer 70 except the light incident region 32, and the light emergent surface 31 of the light guiding unit 30 is covered by the second reflective layer 72 except the light transmitting region 51 corresponding to the cover 50, after entering the light guiding unit 30, the light is uniformly refracted in the light guiding unit 30 and limited to escape from the light emergent surface 31 corresponding to the light transmitting region 51, the brightness of the light emitted from the pattern 101 can be effectively improved, and unnecessary light energy loss is reduced.
In an embodiment, as shown in fig. 7, the supporting unit 60B is made of a light-permeable material, an end surface of the supporting unit 60B is abutted against a side surface of the light guiding unit 30 to form a joint surface, and after part of the light source 40 enters the supporting unit 60B, the light can also enter the light guiding unit 30 through the joint surface between the supporting unit 60B and the light guiding unit 30, so that the light guiding unit 30 not only directly receives the light from the light source 40, but also receives the light from the supporting unit 60B, and the light intensity in the light guiding unit 30 can be further improved.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A luminous fingerprint recognition module, comprising:
a substrate;
a capacitive fingerprint sensing unit disposed on the substrate;
the capacitive fingerprint sensing unit is arranged between the light guide unit and the substrate, and the light guide unit is provided with at least one light incident area;
at least one light source which is electrically connected with the substrate and is arranged outside the periphery of the capacitive fingerprint sensing unit relatively, wherein the light-emitting path of the light source is incident to the corresponding light-entering area of the light guide unit; a kind of electronic device with high-pressure air-conditioning system
A cover body covering the light guide unit and having a light-transmitting region and a non-light-transmitting region, the light-transmitting region forming a pattern;
the light of the light source is transmitted outwards from the light-transmitting area of the cover body through the light guide unit.
2. The luminous fingerprint recognition module according to claim 1, wherein the light source is disposed at a periphery of the light guiding unit, and the light incident area of the light guiding unit is an end face of the periphery.
3. The fingerprint identification module of claim 1, wherein the light source is disposed outside a periphery of the capacitive fingerprint sensing unit and on the substrate, and the light guiding unit has a width greater than a width of the capacitive fingerprint sensing unit, such that the light guiding unit has an extended area that does not overlap the capacitive fingerprint sensing unit, and the light incident area is disposed in the extended area.
4. The luminous fingerprint recognition module of claim 3, wherein the light source has a height lower than a height of the capacitive fingerprint sensing unit.
5. The luminous fingerprint recognition module of claim 2, further comprising a supporting unit disposed between the substrate and the cover, the light source being fixed to the supporting unit.
6. The module of claim 1, 3 or 4, further comprising a supporting unit disposed between the substrate and the cover and connected to the light guiding unit to support the inner surface of the cover.
7. The luminous fingerprint recognition module of claim 6, wherein the supporting unit is made of a light-permeable material.
8. The fingerprint recognition module according to any one of claims 1 to 5, further comprising a first reflective layer disposed on one side of the light guide unit.
9. The fingerprint recognition module of claim 6, further comprising a first reflective layer disposed on one side of the light guide unit.
10. The fingerprint identification module according to any one of claims 1 to 5, further comprising a first reflective layer and a second reflective layer, wherein the first reflective layer is disposed between the light guiding unit and the capacitive fingerprint sensing unit, the second reflective layer is disposed between the light guiding unit and the cover, the second reflective layer is provided with at least one through hole, and the through hole of the second reflective layer corresponds to the light transmitting area of the cover.
11. The fingerprint identification module of claim 6, further comprising a first reflective layer and a second reflective layer, wherein the first reflective layer is disposed between the light guide unit and the capacitive fingerprint sensing unit, the second reflective layer is disposed between the light guide unit and the cover, the second reflective layer has at least one through hole, and the through hole of the second reflective layer corresponds to the light transmitting area of the cover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW111109297A TW202336636A (en) | 2022-03-14 | 2022-03-14 | Illuminated fingerprint recognition module |
| TW111109297 | 2022-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116798079A true CN116798079A (en) | 2023-09-22 |
Family
ID=88045566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210405974.2A Pending CN116798079A (en) | 2022-03-14 | 2022-04-18 | Luminous fingerprint identification module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116798079A (en) |
| TW (1) | TW202336636A (en) |
-
2022
- 2022-03-14 TW TW111109297A patent/TW202336636A/en unknown
- 2022-04-18 CN CN202210405974.2A patent/CN116798079A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| TW202336636A (en) | 2023-09-16 |
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