CN215182048U

CN215182048U - Fingerprint identification button subassembly and display device

Info

Publication number: CN215182048U
Application number: CN202121033415.0U
Authority: CN
Inventors: 郝宁
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-12-14
Anticipated expiration: 2031-05-14

Abstract

The application discloses fingerprint identification button subassembly and display device, including button chip, button chip is equipped with the fingerprint contact surface, button chip periphery covers there is intensive coating, strengthen the coating to at least including covering the first intensive coating of fingerprint contact surface. According to the technical scheme that this application embodiment provided, through covering the reinforced coating on fingerprint identification button subassembly's button chip, protect the case chip through this reinforced coating, resist the wearing and tearing of materials such as external particulate matter, flexible cloth in the use, protect fingerprint identification button subassembly's surface and chip, improve fingerprint identification ware's wear-resisting ability, increase of service life reduces the outward appearance and damages simultaneously.

Description

Fingerprint identification button subassembly and display device

Technical Field

The utility model relates to a show technical field, especially relate to fingerprint identification button subassembly and display device.

Background

Fingerprint sensor and unlocking button combine together in the fingerprint scheme of the cell-phone of present side fingerprint scheme, flat board, make a fingerprint identification button module, realize that the user verifies the fingerprint identification function simultaneously pressing the unlocking button. The center that presses the general protrusion display device of unlocking key sets up, perhaps the indent in display device's center, no matter which kind of form, materials such as external particulate matter, flexible cloth can produce wearing and tearing to fingerprint identification's the module of pressing in the use for fingerprint identification sensor surface produces the risk of wearing and tearing.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings or drawbacks of the prior art, it is desirable to provide a fingerprint recognition key assembly and a display device.

In a first aspect, a fingerprint identification key assembly is provided, comprising a key chip, the key chip having a fingerprint contact surface,

the periphery of the key chip is covered with a reinforced coating, and the reinforced coating comprises a first reinforced coating at least covering part of the fingerprint contact surface.

In an implementation manner, the first strengthening coating is a plurality of protrusions arranged at intervals.

In an implementation manner, the protrusions are in the shape of dots or stripes.

As a practical matter, the spacing between adjacent protrusions is no less than the width of a single fingerprint valley ridge.

As a practical matter, the interval between the adjacent protrusions is 0.4 + -0.12 mm.

As an implementation manner, the height of the protrusion is smaller than the maximum fingerprint identification distance of the capacitor of the key chip.

As a practical matter, the height of the protrusions is less than 0.15 mm.

In an implementation manner, the strengthening coating further comprises a second strengthening coating covering the non-fingerprint contact surface, and the second strengthening coating is of a planar structure.

In a second aspect, a display device is provided, which includes the above fingerprint identification key assembly, the fingerprint identification key assembly is convexly disposed on the display device middle frame, or the fingerprint identification key assembly is concavely disposed on the display device middle frame.

As a practical matter, the appearance of the strengthening coating is consistent with the appearance of the middle frame of the display device.

According to the technical scheme that this application embodiment provided, through covering the reinforced coating on fingerprint identification button subassembly's button chip, protect the case chip through this reinforced coating, resist the wearing and tearing of materials such as external particulate matter, flexible cloth in the use, protect fingerprint identification button subassembly's surface and chip, improve fingerprint identification ware's wear-resisting ability, increase of service life reduces the outward appearance and damages simultaneously.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a fingerprint identification key assembly according to an embodiment of the present invention;

fig. 2-3 are schematic structural diagrams illustrating the fingerprint identification case assembly disposed on the display device in this embodiment.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, the present embodiment provides a fingerprint identification key assembly 1, which includes a key chip 2, the key chip 2 is provided with a fingerprint contact surface,

the periphery of the key chip 2 is covered with a reinforced coating 3, and the reinforced coating 3 comprises a first reinforced coating 31 at least covering part of the fingerprint contact surface 21.

In the correlation technique, with fingerprint identification button module embedded in the side center of equipment, the surface of fingerprint identification button is with center border parallel and level or indent, the design of indent embedding can be restricted to fingerprint identification ware's surface material like this, along with the development of material and the demand that user experience promoted, require the evagination of fingerprint identification button design outside center border in new design, can guarantee like this that the success rate of pressing and user use feel, but brought the wearing and tearing risk of fingerprint identification sensor surface; in this embodiment, the key chip 2 of the fingerprint identification key assembly 1 is covered with the strengthening coating, and the key chip 2 is protected by the strengthening coating 3, so that the abrasion of materials such as external particles and flexible cloth in the using process is resisted, the outer surface and the chip of the fingerprint identification key assembly 1 are protected, the wear resistance of the fingerprint identifier is improved, the service life is prolonged, and the appearance damage is reduced.

Further, the first strengthening coating 31 is a plurality of protrusions arranged at intervals.

In this embodiment, the first strengthening coating 31 is disposed on the fingerprint contact surface of the key assembly, the first strengthening coating 31 protects the fingerprint contact surface of the key assembly, protects external particles, flexible cloth, and the like, and the first strengthening coating 31 improves the wear resistance of the fingerprint contact surface and prolongs the service life; simultaneously, the button subassembly in this embodiment has fingerprint identification's function, and the fingerprint contact surface of this subassembly needs to have better fingerprint identification ability, consequently, sets up first intensive coating 31 into a plurality of archs at spaced, realizes the protection to the fingerprint contact surface through a plurality of protruding structures, and simultaneously, interval between the arch guarantees that this button subassembly can effectually discern the fingerprint, guarantees fingerprint identification's accuracy and validity.

Optionally, the protrusion is in a dot shape or a strip shape.

This embodiment sets up the arch on key unit's fingerprint contact surface, forms certain decorative pattern through the arch, and this decorative pattern does not restrict, when protecting fingerprint contact surface through the arch, need leave certain clearance and carry out fingerprint identification, sets up the arch into the discernment that punctiform or stripe dress does not all influence the fingerprint, forms the cross section as the structure shown in fig. 1.

Further, the distance between every two adjacent protrusions is not less than the width of the single fingerprint valley ridge.

This embodiment sets up protruding structure at the fingerprint contact surface, is formed into at this surface and has bellied line, and the interval between the line needs not to be less than the width of single fingerprint valley spine, guarantees fingerprint identification's accuracy.

Optionally, the distance between adjacent protrusions is 0.4 ± 0.12 mm. It is preferable to set the interval between the adjacent protrusions to 0.4mm with 30% front-to-back floating.

Further, the height of the protrusion is smaller than the maximum fingerprint identification distance of the capacitor of the key chip. The height of the bulge in the embodiment needs to be less than the maximum identification distance of the capacitor of the fingerprint identification chip, so that the efficiency and effectiveness of the key assembly for fingerprint identification are ensured,

optionally, the height of the protrusion is less than 0.15 mm. The height of the protrusion is preferably set to be less than 0.15mm, so that the performance of the fingerprint identification capacitor in the prior art is met.

Further, the strengthening coating 3 further comprises a second strengthening coating 32 covering the non-fingerprint contact surface, and the second strengthening coating 32 has a planar structure.

The fingerprint identification key assembly 1 in this embodiment is generally disposed on a middle frame of a display device, that is, on the periphery of the display device, the case assembly generally protrudes out of the middle frame or partially protrudes out of the middle frame, therefore, a second reinforced coating 32 is disposed on a non-fingerprint contact surface of the key assembly, for example, a side surface perpendicular to the fingerprint contact surface in fig. 1, the side surface of the key assembly is protected by the second reinforced coating 32, and the second reinforced coating 32 is disposed in a planar structure, because fingerprint identification is not required and the key chip 2 is required to be protected in an all-round manner, a gap is not required to be disposed, and the thickness of the second reinforced coating 32 can be determined according to actual requirements, which is not required herein.

Optionally, the strengthening coating is a polytetrafluoroethylene coating. In this embodiment, a teflon (Polytetrafluoroethylene, abbreviated as PTFE) material is used to prepare the reinforced coating, and the first reinforced coating 31 and the second reinforced coating 32 are made of the same material, so that the reinforced coating has better wear resistance.

Further, a resin packaging layer 4 is arranged between the key chip 2 and the reinforced coating.

As shown in fig. 1, a resin encapsulation layer 4 is disposed between the case chip and the strengthening coating layer in this embodiment to encapsulate and primarily protect the key chip 2, and the resin encapsulation layer 4 is generally thin, so that the fingerprint identification performance of the key chip 2 is not affected.

As shown in fig. 2 and fig. 3, the present embodiment further provides a display device, which includes the fingerprint identification key assembly 1, where the fingerprint identification key assembly 1 is convexly disposed on the display device middle frame 5, or the fingerprint identification key assembly is concavely disposed on the display device middle frame.

As shown in fig. 2, with this button subassembly protrusion setting on display device's center 5 in this embodiment, the mode that this protrusion set up makes the key stroke design of this button longer, and user feedback is better in the time of fingerprint identification to protrusion display device center setting can strengthen this button subassembly's structural strength, when guaranteeing wear resistance, and the user feels better in the use.

As shown in fig. 3, in this embodiment, the key assembly is concavely disposed on the middle frame 5 of the display device, and the concave disposing manner can protect the outer surface of the key more favorably, and is not easily worn, and the key assembly is reinforced by combining the reinforced coating, so as to further ensure the wear resistance of the case assembly.

Further, the appearance of the reinforced coating is consistent with that of a middle frame of the display device.

In the embodiment, the reinforced coating and the middle frame of the display device can be prepared by adopting the same material or the same color, so that the appearance consistency of the whole device is ensured.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A fingerprint identification key component is characterized in that the key component comprises a key chip, the key chip is provided with a fingerprint contact surface,

2. The key assembly of claim 1, wherein the first reinforcement coating is a plurality of protrusions spaced apart from each other.

3. The fingerprint recognition key assembly of claim 2, wherein the protrusions are dot-shaped or bar-shaped.

4. The fingerprint recognition key assembly of claim 3, wherein a spacing between adjacent protrusions is no less than a width of a single fingerprint valley ridge.

5. The fingerprint recognition key assembly of claim 4, wherein a spacing between adjacent protrusions is 0.4 ± 0.12 mm.

6. The fingerprint recognition key assembly of claim 3, wherein a height of the protrusion is less than a maximum fingerprint recognition distance of a capacitance of the key chip.

7. The fingerprint recognition key assembly of claim 6, wherein the height of the protrusion is less than 0.15 mm.

8. The fingerprint recognition key assembly of any one of claims 1-7, wherein the reinforcement coating further comprises a second reinforcement coating covering the non-fingerprint contact surface, the second reinforcement coating being a planar structure.

9. A display device, comprising the fingerprint recognition key assembly according to any one of claims 1 to 8, wherein the fingerprint recognition key assembly is protruded from the display device middle frame, or the fingerprint recognition key assembly is recessed from the display device middle frame.

10. The display device of claim 9, wherein the appearance of the strengthening coating is consistent with the appearance of a bezel of the display device.