KR101342957B1 - Method of manufacturing fingerprint recognition home key using uv molding - Google Patents

Abstract

An embodiment of the present invention relates to a fingerprint recognition home key manufacturing method using UV molding comprising: a first injection molding step for forming a first injection molding material by fixing the location of a fingerprint recognition sensor; a second injection molding step for forming a second injection molding material using the first injection molding material and for forming mould on the second injection molding material; a step of covering UV molding liquid with the mould; and a step of forming an UV molding layer by hardening the UV molding liquid covered with the mould. [Reference numerals] (AA) START;(BB) END;(S100) First injection;(S200) Second injection;(S300) Coating UV molding liquid on a second injection molding material storage groove;(S400) Hardening a UV molding layer;(S500) Grinding a UV molding layer

Description

ＵⅤ Method for manufacturing fingerprint recognition home key using molding {METHOD OF MANUFACTURING FINGERPRINT RECOGNITION HOME KEY USING UV MOLDING}

One embodiment of the present invention relates to a fingerprint recognition home key manufacturing method using UV molding.

Fingerprint recognition technology is a technique that is mainly used to prevent various security incidents by going through user registration and authentication procedures. In particular, it is a technology applied to personal and organizational network defense, protection of various contents and data, and secure access control.

2. Description of the Related Art In recent years, as the number of users of various portable devices including smartphones and tablet PCs has surged, personal information and contents stored in and stored in a portable device have frequently been leaked to the outside.

In the case of the conventional mobile phone, it has been used only for the purpose of making a voice call, and in the case of a personal computer, it has been placed in the home or office, and only a few users have been provided.

However, recently developed smart phones and tablet PCs have been manufactured in a compact form that can be carried by users anytime, anywhere, away from the limited use of conventional mobile phones and personal computers, It is a concept of necessity to carry around.

With the development of mobile technology and the development of computing devices, portable devices such as smartphones and tablet PCs have built-in large-capacity data storage media, high-performance computation processor and high-speed communication module, It is now possible to carry out the following.

 If such a portable device is lost or handed over to the hands of a malicious person, there is a risk that information that requires security maintenance such as various personal information and business secrets may be leaked to an unspecified third party. In addition, there are many cases where personal financial transactions are carried out using a portable device, and when personal financial information is leaked to another person, a risk of serious financial accidents may occur.

Although fingerprint recognition function has been applied to some portable devices such as smart phones and notebooks, fingerprint recognizers are attached to the device so that they can be visually recognized.

Fig. 1 shows a typical example of a portable device. Fig. 1 (a) shows a brief view of a cellular phone, and Fig. 1 (b) shows a tablet PC briefly.

As shown in FIG. 1 (a), in a recently released cellular phone 10, a large-area display device 13 is provided at the front center of the main body 11, and the display device 13 has a complex key The touch drive method is applied beyond the pad structure.

And a home key H is provided at the bottom of the front of the mobile phone 10. [ The home key H realizes various functions of the cellular phone 10 in a one-touch manner, thereby improving usability.

1B, the tablet PC 20 is provided with a display device 23 that can be touch-driven to the front center of the main body 21, similar to the above-described mobile phone, and the main body 21 Is provided with a groove key (H)

In this way, in a mobile phone or a tablet PC, a home key (H) realizes an operation set through a portable device. For example, when a home device (H) is pressed or touched during the use of a portable device, Function.

However, in the case of the portable device introduced to date, the function and arrangement structure of the home key provided in the majority of devices are limited and used only in a similar manner as described above. When a security technique such as user authentication is applied Was rare.

Among various types of fingerprint recognition sensors, an electrostatic fingerprint sensor is provided in a form of a flexible printed circuit board (FPCB) combined with an ASIC, and is suitable for being embedded in a home key of a portable device.

However, some recently introduced fingerprint recognition functions have been applied to some portable devices such as smart phones and notebooks. However, most of them are apparently equipped with a fingerprint recognition sensor, which is vulnerable to security, and is aesthetically limiting the design of portable devices.

Accordingly, a portable device is provided with a fingerprint recognition device, and a manufacturing method for visually preventing a fingerprint recognition sensor from being invisible.

Prior art related to the present invention is disclosed in Republic of Korea Patent Publication No. 2002-0016671 (2002. 03. 06. Publication), the prior art discloses a portable information terminal with a fingerprint recognition module and a technology related to the control method Is disclosed.

The present invention provides a method of manufacturing a fingerprint recognition home key, which is provided in a portable terminal such as a smart phone, a tablet PC, and the like, and which can not distinguish whether a fingerprint recognition sensor is provided.

In addition, the present invention provides a fingerprint recognition home key manufacturing method that has a good adhesion between the fingerprint recognition sensor and the home key injection by using a UV molding method and has an excellent fingerprint recognition rate with a high dielectric constant.

The problem to be solved by the present invention is not limited to the above-mentioned problems, other problems that are not mentioned here will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention (a) the first injection step of molding the first injection molding by fixing the position of the fingerprint recognition sensor; (b) a second injection molding step of forming a second injection molding in the form of a home key using the first injection molding, and forming a mold on the second injection molding; (c) applying a UV molding liquid to the mold; And (d) hardening the UV molding liquid applied to the mold to form a UV molding layer.

Before the step (a), the adhesive or adhesive may be applied onto the surface of the fingerprint recognition sensor in contact with the primary injection.

The UV molding solution in step (c) may comprise a UV curable resin.

(D) step (d-1) drying the UV molding liquid applied to the mold to form a UV molding layer; And (d-2) hardening by performing UV exposure on the dried UV molding layer.

After the step (d), (e) polishing the cured UV molding layer leaving only a predetermined thickness; further includes.

After the step (e), further comprising the step of (f) painting.

Before the step (f), it is possible to apply a primer on top of the UV molding layer polished in the step (e).

After the step (f), (g) performing a urethane coating; And (h) performing a UV coating.

In addition, according to an embodiment of the present invention is provided with a fingerprint sensor and a groove-shaped mold (mould) is provided on the upper part of the injection molded in the form of a home key, the UV molding liquid is contained in the mold and cured UV molding Provided is a fingerprint recognition home key structure in which a layer is formed.

In this case, the UV molding layer may be polished so that only a predetermined thickness remains.

In this case, a paint layer may be formed on the UV molding layer after the polishing.

In addition, a UV layer may be formed on the paint layer.

In addition, a urethane layer may be formed between the paint layer and the UV layer.

In addition, a primer layer may be formed between the upper portion of the UV molding layer after the polishing and the painting layer.

According to an embodiment of the present invention, by providing a home key having a fingerprint recognition function, it is possible to secure user authentication and security functions when using a portable device such as a smartphone, a tablet PC, or the like. As a result, external leakage of data such as personal information and content stored in the portable device can be prevented, and secure access control can be enabled.

In addition, the built-in fingerprint sensor on the home key of a portable device such as a smart phone, tablet PC, etc., but apparently does not identify whether the fingerprint sensor is provided, it can solve the problem of security, aesthetically vulnerable.

In particular, according to one embodiment of the present invention, after the mold is formed on the injection molded product after the second injection, the UV molding liquid is applied to the inside of the mold. The cured UV molding layer is then formed through drying and UV exposure. Then, the UV molding layer may be polished to leave only the necessary thickness.

Therefore, it is possible to enhance the interlayer adhesion between the fingerprint touch area and the fingerprint recognition sensor as compared to the case of spraying the primer on the second injection molding according to the conventional method, and as a result, between the fingerprint recognition sensor and the coating and the coating layer. It is possible to reliably prevent the play that may occur at the end, thereby contributing to maintaining a stable dielectric constant desired by the manufacturer, resulting in a high fingerprint recognition rate.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a home key provided in a portable device. Fig.
Figure 2 is a flow chart of a fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention.
3 is a flow chart showing the detailed steps of the UV molding layer forming step of FIG.
Figure 4 is a process diagram of a fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention.
Figure 5 is a flow chart showing the process after the detailed steps of the fingerprint recognition home key manufacturing method using the UV molding shown in FIG.
6 is a cross-sectional view showing a fingerprint recognition home key structure manufactured according to the flowchart shown in FIG.
Figure 7 is a view showing a state in which the decoration parts are assembled on the home key provided through the fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall appropriately define the concept of the term in order to best explain its invention It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

Hereinafter, a fingerprint recognition home key manufacturing method using UV molding according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a flow chart of a fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention.

As shown, the fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention is the first injection step (S100), the second injection step (S200), UV molding solution coating step (S300), UV molding It includes a layer curing step (S400) and UV molding layer polishing step (S500).

3 is a flowchart illustrating a drying step (S410) and a UV exposure step (S420) which are detailed steps of the UV molding layer curing step (S400) of the fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention. .

Hereinafter, a method of manufacturing a fingerprint recognition home key will be described in detail with reference to FIG. 4 that briefly illustrates each step process.

First injection step (S100)

This step is to perform a first injection to prepare a step for forming a shape for the second injection through the first injection of the ASIC and FPCB of the fingerprint recognition sensor after preparing the fingerprint recognition sensor.

And prior to the first injection step, an adhesive or an adhesive may be applied onto the surface of the fingerprint recognition sensor in contact with the first injection.

Referring to FIG. 4, the fingerprint recognition sensor 100 uses an electrostatic characteristic of the skin as a sensor using an electrostatic method, and reads unique fingerprint-specific shapes for each user as an electrical signal. The fingerprint recognition sensor 100 includes an ASIC 105 and an FPCB 110.

The ASIC 105 converts the analog data detected during the fingerprint touch into a digital signal and outputs the digital signal. The ASIC 105 is electrically connected to the FPCB 110 having a pattern for recognizing a fingerprint.

And, as shown, the ASIC 105 is provided in a convex form protruding from either side of the FPCB (100).

Fingerprint recognition sensor 100 is fixed to the upper part of the injection through the first, second injection. In addition, at least one material selected from PC, PC glass, ABS, PP, PET, nylon, and a plastic polymer compound may be used as the injection material used in the first and second injection.

Second injection step ( S200 )

This step is a step of molding a second injection molding in the form of a home key in a state in which the fingerprint recognition sensor is closely attached to and fixed after the first injection. In particular, during the secondary injection in this step, a mold having a yaw shape is formed on the secondary injection.

The mold is a receiving groove formed stepped around the edge of the secondary injection molding, and serves to hold and fix the FPCB edge of the fingerprint sensor, and at the same time, it serves as a space in which the UV molding liquid is filled.

UV molding liquid application step (S300)

In this step, the UV molding liquid is applied and filled into the receiving groove on the upper part of the second injection molding, that is, inside the mold.

UV molding liquid contains resin hardened | cured by UV light (this is called UV curable resin). The UV curable resin may include an oligomer, a monomer, a photopolymerization initiator, and various other additives as is well known in the art.

Oligomer means a base resin component, and is an important component that determines the physical properties of a resin, and forms a cured film by forming a polymer bond by a polymerization reaction. Depending on the structure of the skeleton molecule, it is classified into an acrylate such as a polyester type, an epoxy type, a urethane type, a polyether type, and a polyacryl type.

The monomer serves as a reactive diluent, acting as a crosslinking agent or diluent for the oligomer.

The photopolymerization initiator is a raw material that is the most basic material of a UV curable resin, and absorbs UV to generate radicals or cations to initiate polymerization.

Other additives may be added depending on the application.

Referring to FIG. 4B, it can be seen that the UV molding liquid 390 is uniformly applied to the inside of the mold on the upper part of the second injection-molded product 300 provided in the receiving groove shape.

UV molding layer curing step (S400)

This step is to dry and cure the UV molding liquid applied in the mold of the secondary injection molding in the previous step to form a rigid UV molding layer.

This step includes a drying step S410 and a UV exposure step according to the flowchart shown in FIG. 3.

Referring to Figure 4 (c) and (d) it can be seen that the UV molding liquid is dried and UV exposure is performed.

Referring to FIG. 4C, a UV molding liquid 390 is applied to a mold formed stepped on the second injection-molded product 300, and thermal drying is performed on the UV molding liquid 390. The heat drying temperature at this time may be made between about 50 ~ 200 ℃.

Subsequently, referring to FIG. 4D, after the drying is completed in the previous step, UV exposure is performed. The UV molding liquid filled in the mold of the second injection molding 300 through UV exposure forms a hardened UV molding layer 390.

UV molding layer polishing step (S500)

This step is to remove the UV molding layer hardened in the previous step, leaving only the set thickness.

This step can be confirmed with reference to FIG. The UV molding layer 390 hardened through the previous step is removed leaving only the set thickness. The area indicated by the dotted line represents the part polished through polishing or grinding.

5 is a flowchart illustrating a process after the fingerprint recognition home key manufacturing method using the above-described UV molding.

And the structure of the fingerprint recognition home key provided through the subsequent steps shown in Figure 5 can be confirmed with reference to FIG.

Fingerprint recognition home key manufacturing method using UV molding according to an embodiment of the present invention includes the above-described steps S100, S200, S300, S400, S500, as well as forming a primer layer on top of the polished UV molding layer. It comprises a step (S600), the paint layer forming step (S700), the urethane layer forming step (S800) and the UV layer forming step (S900).

First, the UV molding layer covered on the FPCB through the above-described polishing step is removed by polishing, leaving only the set thickness.

In addition, a primer layer may be formed on the hardened UV molding layer through the primer layer forming step (S600).

Referring to FIG. 6, it can be seen that the primer layer 391 is formed on the UV molding layer 390 left through polishing.

The primer layer 391 is applied between the coating layer 400, which will be described later, and the UV molding layer 390 remaining after the polishing step, and serves to improve adhesion performance to each other.

Subsequently, the paint layer forming step S700 is performed.

Referring to FIG. 6, the paint layer 400 may be formed over the primer layer 391 applied in the previous step.

The paint layer is a layer formed by coloring the color of the portable device to which the fingerprint recognition home key is applied (for example, black or white), and makes the fingerprint sensor inconspicuous in appearance of the portable device, and the home key. Improves the aesthetics of the device by unifying the color between the device and the portable device.

Subsequently, the urethane layer forming step S800 and the UV layer forming step S900 are performed.

Referring to FIG. 6, it can be seen that the urethane layer 490 and the UV layer 500 are sequentially stacked on the paint layer 400.

The UV layer 500 imparts gloss and hardness to the surface of the home key.

Before the UV layer is formed, the urethane layer 490 may be preferably formed between the UV layer and the painting layer.

The urethane layer 490 serves to prevent the UV layer 500 from penetrating or depositing into the paint layer 400 and increasing the adhesion between the paint layer 400 and the UV layer 500.

7 is a view showing a state in which the decoration parts are assembled on the home key provided through the fingerprint recognition home key manufacturing method according to an embodiment of the present invention.

FIG. 7A schematically shows one exemplary shape for the primary injection. However, the primary injection molded product 200 is not limited to the illustrated shape, and may be slightly changed in shape and structure through various embodiments. Here, the fingerprint recognition sensor 100 is provided in a form exposed to the outside.

7 (b) shows a secondary injection product 300 provided in the shape of a home key through the secondary injection, and the ring-shaped deco part 600 through the coupling hole 340 provided in the secondary injection material 300. This can be assembled. In addition, the fingerprint recognition sensor is not exposed to the outside through the second injection.

The deco component 600 is assembled to the upper surface of the fingerprint recognition home key 300 can be confirmed in detail through (c) of FIG.

However, the shape and formation method of the illustrated deco component 600 is not limited to the illustrated form, but may have various other embodiments. Therefore, the shape of the decoration parts and the coupling form between them may be slightly different.

As described above, according to an embodiment of the present invention, by providing a home key having a fingerprint recognition function, it is possible to secure user authentication and security functions when using a portable device such as a smartphone, a tablet PC, and the like. As a result, external leakage of data such as personal information and content stored in the portable device can be prevented, and secure access control can be enabled.

In addition, the built-in fingerprint sensor on the home key of a portable device such as a smart phone, tablet PC, etc., but apparently does not identify whether the fingerprint sensor is provided, it can solve the problem of security, aesthetically vulnerable.

In particular, according to an embodiment of the present invention, after forming a mold on the injection molded product after the first and second injection, the UV molding liquid is applied to the inside of the mold. The cured UV molding layer is then formed through drying and UV exposure. Then, the UV molding layer may be polished to leave only the necessary thickness.

Therefore, it is possible to strengthen the interlayer adhesion between the fingerprint touch area and the fingerprint sensor as compared to the case of spraying the primer on the second injection molding according to the conventional method. As a result, the dielectric constant can be increased, resulting in high fingerprint recognition rate. have.

In the above, the method for manufacturing a fingerprint recognition home key using UV molding according to an exemplary embodiment of the present invention has been described in detail.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

100: Fingerprint sensor
105: ASIC
110: FPCB
300: secondary injection
300: fingerprint recognition home key
390: UV molding layer (or UV molding liquid)
391: primer layer
400: paint layer
490: urethane layer
500: UV layer
600: Deco Parts

Claims (14)

(a) a first injection step of molding the first injection molding by fixing the position of the fingerprint recognition sensor;
(b) a second injection molding step of forming a second injection molding in the form of a home key using the first injection molding, and forming a mold on the second injection molding;
(c) applying a UV molding liquid to the mold;
(d) curing the UV molding liquid applied to the mold to form a UV molding layer;
(e) polishing the cured UV molding layer leaving only a set thickness;
(f) performing painting;
(g) carrying out a urethane coating; And
(h) performing a UV coating; fingerprint recognition home key manufacturing method using a UV molding comprising a. The method of claim 1,
Before the step (a), the fingerprint recognition home key manufacturing method using a UV molding in which an adhesive or an adhesive is applied onto the surface of the fingerprint recognition sensor in contact with the primary injection. The method of claim 1,
UV molding solution in the step (c) is a fingerprint recognition home key manufacturing method using a UV molding containing a UV curable resin. The method of claim 1,
The step (d)
(d-1) drying the UV molding liquid applied to the mold to form a UV molding layer; And
(d-2) performing a UV exposure on the dried UV molding layer to cure; fingerprint home key manufacturing method using a UV molding comprising a. delete delete The method of claim 1,
Before the step (f)
Fingerprint recognition home key manufacturing method using a UV molding for applying a primer on top of the UV molding layer polished in the step (e). delete delete delete delete delete delete delete

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