CN107979669B - Touch fingerprint assembly for smart phone - Google Patents
Touch fingerprint assembly for smart phone Download PDFInfo
- Publication number
- CN107979669B CN107979669B CN201711314096.9A CN201711314096A CN107979669B CN 107979669 B CN107979669 B CN 107979669B CN 201711314096 A CN201711314096 A CN 201711314096A CN 107979669 B CN107979669 B CN 107979669B
- Authority
- CN
- China
- Prior art keywords
- cover plate
- mobile phone
- ring
- base ring
- reinforcing sheet
- 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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Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000012790 adhesive layer Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 49
- 239000003292 glue Substances 0.000 claims description 37
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 239000000741 silica gel Substances 0.000 abstract description 4
- 229910002027 silica gel Inorganic materials 0.000 abstract description 4
- 230000002146 bilateral effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
Abstract
The invention discloses a touch fingerprint assembly for a smart phone, which comprises a cover plate, a fingerprint chip, a base ring, a circuit substrate, a circular silica gel ring, a mobile phone cover plate and a main board, wherein the cover plate is positioned right above the fingerprint chip, and the cover plate and the fingerprint chip are arranged in a through hole of the base ring; a groove is formed in the bottom of the outer side surface of the base ring, a sealing ring is embedded into the groove and is positioned between the mobile phone cover plate and the base ring, and a reinforcing sheet is bonded and connected with the lower surface of the circuit substrate through a third adhesive layer; the reinforcing sheet is provided with a downward arc-shaped protruding part, the upper surface of the main board is provided with an upward protruding dome, and the dome is positioned right below the arc-shaped protruding part; the reinforcing sheet is provided with a second through hole, and an FPC flexible flat cable penetrates through the second through hole so as to extend out of the reinforcing sheet. According to the invention, the mobile phone shell, the silica gel pad, the base plate and the base ring are bonded in a sealing way, so that the inside and the outside of the mobile phone are isolated, the waterproof and dustproof effects can be effectively realized, the faults are reduced, the equipment is effectively protected, and the service life is prolonged.
Description
Technical Field
The invention relates to a touch display screen, and belongs to the technical field of semiconductor packaging.
Background
At present, fingerprint identification is widely applied to electronic product industries such as mobile phones/notebook computers, fingerprint modules are connected with a mobile phone main board through connectors in a Flexible Printed Circuit (FPC) flexible wiring mode, and in the traditional design: the FPC is led out from the side of the module, the module is matched with the mobile phone shell in a hole-shaft clearance fit mode, and referring to FIG. 1, the module is formed by 1. A surface layer protector; 2. a fingerprint chip; 3. a base ring; 4. the substrate and the FPC are formed by four parts; the surface layer protecting material covers the surface of the fingerprint chip, the fingerprint chip is connected with the substrate through the conductive material, and the base ring is connected with the substrate through glue, and the fingerprint chip is attached and sealed. The whole module is connected with the mobile phone motherboard through a side FPC flexible flat cable in a connector mode, the module is matched with the mobile phone shell in a hole-shaft clearance fit mode, and a fit clearance exists at the matched position. Because of the fit clearance between the existing module and the mobile phone shell, water vapor/ash layers and other objects can enter the mobile phone through the clearance, so that the mobile phone has no reliable waterproof and dustproof effects.
Disclosure of Invention
The invention aims to provide a touch fingerprint component for a smart phone, which is characterized in that a mobile phone shell, a silica gel pad, a base plate and a base ring of a touch display screen are bonded in a sealing mode in pairs, so that the inside and the outside of the mobile phone are isolated, the mobile phone can be effectively waterproof and dustproof, faults are reduced, equipment is effectively protected, and the service life is prolonged.
In order to achieve the above purpose, the invention adopts the following technical scheme: the touch fingerprint assembly comprises a cover plate, a fingerprint chip, a base ring, a circuit substrate, a circular silica gel ring, and a mobile phone cover plate and a main plate, wherein the lower surface of the mobile phone cover plate and the main plate are provided with ink layers, the cover plate is positioned right above the fingerprint chip, and the cover plate and the fingerprint chip are arranged in a through hole of the base ring;
the circuit substrate is positioned under the fingerprint chip and the base ring, the bottom of the outer side surface of the base ring is provided with a groove, a sealing ring is embedded into the groove and positioned between the mobile phone cover plate and the base ring, and a reinforcing sheet is bonded and connected with the lower surface of the circuit substrate through a third adhesive layer;
the inner side end of the circular silica gel ring is connected with the edge area of the lower surface of the reinforcing sheet through a first glue layer in an adhesive mode, and the outer side end of the circular silica gel ring is connected with the bottom of the mobile phone cover plate through a second glue layer in an adhesive mode;
the reinforcing sheet is provided with a downward arc-shaped protruding part, the upper surface of the main board is provided with an upward protruding dome, and the dome is positioned right below the arc-shaped protruding part; the reinforcing sheet is provided with a second through hole, and an FPC flexible flat cable penetrates through the second through hole so as to extend out of the reinforcing sheet;
the bottom of the base ring is provided with an outer flange, a gasket layer is connected with the upper surface of the outer flange through a fourth adhesive layer, and a gap is reserved between the gasket layer and the lower surface of the mobile phone cover plate.
The further improved scheme in the technical scheme is as follows:
1. in the above solution, the shape of the through hole is circular, square, oval or racetrack, not limited to the above shape, but may be other centrosymmetric or bilateral symmetry patterns.
2. In the above solution, the shape of the cover plate is circular, square, oval or racetrack, not limited to the above shape, but may be other centrosymmetric or bilateral symmetry patterns.
3. In the above scheme, the first glue layer and the second glue layer are solid glue layers, double-sided glue layers or liquid glue layers.
4. In the above scheme, the cross section of the sealing ring is circular, and the groove is semicircular.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
1. the touch fingerprint component for the smart phone has the advantages that the reinforcing sheet is provided with the downward arc-shaped protruding part, the upward protruding dome is arranged on the upper surface of the main board and is positioned right below the arc-shaped protruding part, the switch or wake-up function is added on the fingerprint module, meanwhile, the process assembly steps of the module are reduced, the use efficiency of parts is optimized, and therefore the cost of electronic equipment is reduced; and secondly, the bottom of the base ring is provided with an outer flange, a gasket layer is connected with the upper surface of the outer flange through a fourth adhesive layer, a gap is reserved between the gasket layer and the lower surface of the mobile phone cover plate, and the ink is prevented from falling off when the mobile phone cover plate moves up, down, left and right frequently relative to the base ring, so that the integrity of the ink layer is maintained, and light leakage of a mobile phone screen is avoided.
2. The touch fingerprint component for the smart phone overcomes the defect that the existing scheme is attached with tiny gaps and cannot guarantee waterproof and dustproof effects, the FPC outgoing line position is moved to the bottom, the mobile phone shell, the silica gel pad, the base plate and the base ring are attached in a sealing mode, the inside and the outside of the mobile phone are isolated, and waterproof and dustproof effects can be effectively achieved; and secondly, the circuit substrate is positioned under the fingerprint chip and the base ring, the bottom of the outer side surface of the base ring is provided with a groove, and a sealing ring is embedded into the groove and positioned between the mobile phone cover plate and the base ring, so that the waterproof and dustproof effects can be achieved, faults are reduced, equipment is effectively protected, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of a touch fingerprint assembly for a smart phone according to the present invention;
fig. 2 is a schematic view of a partial structure of fig. 1.
In the above figures: 1. a cover plate; 2. a fingerprint chip; 4. a circuit substrate; 5. a base ring; 51. a through hole; 6. a ring silica gel ring; 7. a first glue layer; 8. a second glue layer; 9. FPC flexible flat cable; 10. a groove; 11. a seal ring; 15. a main board; 16. a reinforcing sheet; 17. a third adhesive layer; 18. an arc-shaped protruding portion; 19. a pot slice; 20. a second through hole; 21. a mobile phone cover plate; 35. a fourth glue layer; 36. a gasket layer; 37. an ink layer.
Detailed Description
The invention is further described below with reference to examples:
example 1: the touch fingerprint assembly for the smart phone comprises a cover plate 1, a fingerprint chip 2, a base ring 5, a circuit substrate 4, a circular silica gel ring 6, a mobile phone cover plate 21 with an ink layer 37 on the lower surface and a main board 15, wherein the cover plate 1 is positioned right above the fingerprint chip 2, and the cover plate 1 and the fingerprint chip 2 are arranged in a through hole 51 of the base ring 5;
the circuit substrate 4 is positioned under the fingerprint chip 2 and the base ring 5, a groove 10 is formed in the bottom of the outer side surface of the base ring 5, a sealing ring 11 is embedded into the groove 10 and positioned between the mobile phone cover plate 21 and the base ring 5, and a reinforcing sheet 16 is bonded and connected with the lower surface of the circuit substrate 4 through a third adhesive layer 17;
the inner side end of the circular silica gel ring 6 is in adhesive connection with the edge area of the lower surface of the reinforcing sheet 16 through a first glue layer 7, and the outer side end of the circular silica gel ring 6 is in adhesive connection with the bottom of the mobile phone cover plate 21 through a second glue layer 8;
the reinforcing sheet 16 is provided with a downward arc-shaped protruding part 18, the upper surface of the main board 15 is provided with an upward protruding dome sheet 19, and the dome sheet 19 is positioned right below the arc-shaped protruding part 18; the reinforcing sheet 16 is provided with a second through hole 20, and an FPC flexible flat cable 9 penetrates through the second through hole 20 so as to extend out of the reinforcing sheet 16;
the bottom of the base ring 5 is provided with an outer flange 52, a gasket layer 36 is connected with the upper surface of the outer flange 52 through a fourth adhesive layer 35, and a gap is reserved between the gasket layer 36 and the ink layer 37 on the lower surface of the mobile phone cover plate 34.
The through hole 51 is circular in shape, and the cover plate 1 is circular in shape.
The first glue layer 7 and the second glue layer 8 are solid glue layers.
The cross-section of the seal ring 11 is circular, and the groove 10 is semicircular.
Example 2: the touch fingerprint assembly for the smart phone comprises a cover plate 1, a fingerprint chip 2, a base ring 5, a circuit substrate 4, a circular silica gel ring 6, a mobile phone cover plate 21 with an ink layer 37 on the lower surface and a main board 15, wherein the cover plate 1 is positioned right above the fingerprint chip 2, and the cover plate 1 and the fingerprint chip 2 are arranged in a through hole 51 of the base ring 5;
the circuit substrate 4 is positioned under the fingerprint chip 2 and the base ring 5, a groove 10 is formed in the bottom of the outer side surface of the base ring 5, a sealing ring 11 is embedded into the groove 10 and positioned between the mobile phone cover plate 21 and the base ring 5, and a reinforcing sheet 16 is bonded and connected with the lower surface of the circuit substrate 4 through a third adhesive layer 17;
the inner side end of the circular silica gel ring 6 is in adhesive connection with the edge area of the lower surface of the reinforcing sheet 16 through a first glue layer 7, and the outer side end of the circular silica gel ring 6 is in adhesive connection with the bottom of the mobile phone cover plate 21 through a second glue layer 8;
the reinforcing sheet 16 is provided with a downward arc-shaped protruding part 18, the upper surface of the main board 15 is provided with an upward protruding dome sheet 19, and the dome sheet 19 is positioned right below the arc-shaped protruding part 18; the reinforcing sheet 16 is provided with a second through hole 20, and an FPC flexible flat cable 9 penetrates through the second through hole 20 so as to extend out of the reinforcing sheet 16;
the bottom of the base ring 5 is provided with an outer flange 52, a gasket layer 36 is connected with the upper surface of the outer flange 52 through a fourth adhesive layer 35, and a gap is reserved between the gasket layer 36 and the ink layer 37 on the lower surface of the mobile phone cover plate 34.
The through hole 51 is shaped like a racetrack, and the cover plate 1 is shaped like a racetrack.
The first glue layer 7 and the second glue layer 8 are double-sided glue layers.
When the cover plate is pressed by a user, the arc-shaped protruding part of the reinforcing sheet is pushed to move downwards, and then the protruding elastic surface of the dome sheet is pushed to move downwards to be in contact with the main body, so that the switch or wake-up function is added on the fingerprint module, meanwhile, the process assembly steps of the module are reduced, the use efficiency of the parts is optimized, and the cost of the electronic equipment is reduced.
The FPC flexible flat cable 9 is led out from the bottom of the circuit substrate 4, the cover plate 1 is covered on the surface of the fingerprint chip 2, the fingerprint chip 2 is connected with the circuit substrate 4 through a conductive material, the base ring 5 is connected with the circuit substrate 4 through glue, the bonding is sealed, and the annular silica gel ring is bonded with the substrate through glue (solid glue/double-sided glue/liquid glue and the like). When the module is assembled with the mobile phone shell, the module main body is in clearance fit with the mobile phone shell, and the round-edge ring silica gel ring is in sealing fit with the mobile phone shell by adopting glue (solid glue/double-sided glue/liquid glue and the like).
When the touch fingerprint component for the smart phone is adopted, the defect that the existing scheme is attached so that a tiny gap exists and the waterproof and dustproof effects cannot be guaranteed is overcome, the FPC outgoing line position is moved to the bottom, the mobile phone shell, the silica gel pad, the base plate and the base ring are attached in a sealing mode, the inside and the outside of the mobile phone are isolated, and waterproof and dustproof effects can be effectively achieved; secondly, the circuit substrate is positioned under the fingerprint chip and the base ring, the bottom of the outer side surface of the base ring is provided with a groove, and a sealing ring is embedded into the groove and positioned between the mobile phone cover plate and the base ring, so that the functions of water resistance and dust resistance can be achieved, faults are reduced, equipment is effectively protected, and the service life is prolonged; and secondly, when the mobile phone cover plate is prevented from moving up, down, left and right frequently relative to the base ring, the ink is prevented from falling off, so that the integrity of the ink layer is maintained, and light leakage of a mobile phone screen is avoided.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (3)
1. A touch-control fingerprint subassembly for smart mobile phone, its characterized in that: the mobile phone fingerprint detection device comprises a cover plate (1), a fingerprint chip (2), a base ring (5), a circuit substrate (4), a ring silica gel ring (6), a mobile phone cover plate (21) and a main plate (15), wherein the lower surface of the mobile phone cover plate is provided with an ink layer (37), the cover plate (1) is positioned right above the fingerprint chip (2), the cover plate (1) and the fingerprint chip (2) are arranged in a through hole (51) of the base ring (5), the through hole (51) is circular, square, elliptic or runway-shaped, and the cover plate (1) is circular, square, elliptic or runway-shaped;
the circuit substrate (4) is positioned under the fingerprint chip (2) and the base ring (5), a groove (10) is formed in the bottom of the outer side surface of the base ring (5), a sealing ring (11) is embedded into the groove (10) and positioned between the mobile phone cover plate (21) and the base ring (5), and a reinforcing sheet (16) is bonded and connected with the lower surface of the circuit substrate (4) through a third adhesive layer (17);
the inner side end of the circular silica gel ring (6) is connected with the edge area of the lower surface of the reinforcing sheet (16) through a first glue layer (7) in an adhesive mode, and the outer side end of the circular silica gel ring (6) is connected with the bottom of the mobile phone cover plate (21) through a second glue layer (8) in an adhesive mode;
the reinforcing sheet (16) is provided with a downward arc-shaped protruding part (18), the upper surface of the main board (15) is provided with an upward protruding dome (19), and the dome (19) is positioned under the arc-shaped protruding part (18); the reinforcing sheet (16) is provided with a second through hole (20), and an FPC flexible flat cable (9) penetrates through the second through hole (20) so as to extend out of the reinforcing sheet (16); the bottom of the base ring (5) is provided with an outer flange (52), a gasket layer (36) is connected with the upper surface of the outer flange (52) through a fourth adhesive layer (35), and a gap is reserved between the gasket layer (36) and an ink layer (37) on the lower surface of the mobile phone cover plate (21).
2. The touch fingerprint assembly for a smart phone of claim 1, wherein: the first glue layer (7) and the second glue layer (8) are solid glue layers, double-sided glue layers or liquid glue layers.
3. The touch fingerprint assembly for a smart phone of claim 1, wherein: the cross section of the sealing ring (11) is circular, and the groove (10) is semicircular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314096.9A CN107979669B (en) | 2017-12-12 | 2017-12-12 | Touch fingerprint assembly for smart phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314096.9A CN107979669B (en) | 2017-12-12 | 2017-12-12 | Touch fingerprint assembly for smart phone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107979669A CN107979669A (en) | 2018-05-01 |
| CN107979669B true CN107979669B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711314096.9A Active CN107979669B (en) | 2017-12-12 | 2017-12-12 | Touch fingerprint assembly for smart phone |
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| Country | Link |
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| CN (1) | CN107979669B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831324B (en) * | 2018-07-19 | 2020-04-21 | 京东方科技集团股份有限公司 | Terminal |
| CN109302515A (en) * | 2018-11-30 | 2019-02-01 | 上海摩软通讯技术有限公司 | Lens installation structure and mobile terminal |
| CN112956178B (en) * | 2018-12-29 | 2023-07-04 | Oppo广东移动通信有限公司 | Mobile terminal |
| CN114241533B (en) * | 2021-12-22 | 2023-05-16 | 赣州深奥科技有限公司 | Waterproof fingerprint module structure |
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