TWM516192U - Guide light structure of fingerprint recognition plate - Google Patents

Description

Fingerprint identification board light guiding structure

The present invention relates to a light guiding structure of a fingerprint identification board, in particular to a fingerprint identification board light guiding structure which is applied to an electronic device and can be placed by a finger and provides brightness required for acquiring a fingerprint.

Electronic devices, such as smart phones, laptops, flash drives, and more like smart door locks, often need to store important information such as personal letters or photos, or to unlock, burglar, and so on.

Most of the early electronic devices used password settings to prevent malicious or deliberate stealing of important data or to prevent thieves from invading. However, in order to avoid password forgetting, the general user often uses the important number such as the birthday of himself or his family to set the password when using the password setting. In this way, it is easy for the person concerned to use various methods to obtain the password, which is important. The leakage of information.

Therefore, in order to improve the functionality of theft prevention, today's electronic devices have gradually adopted the effect of fingerprint recognition. The advantage of fingerprint recognition is that others can't copy it, which can greatly improve the effect of confidentiality. As shown in Figure 1, today's smart phone A has become a necessity for life. Most users will use the smart phone A to send and receive mail or store personal data.

Therefore, most of the existing smart phone As are introduced with the function of fingerprint recognition, thereby emphasizing the effect of theft prevention. For example, the smart phone A is provided with a fingerprint identification area B, so that the user can read the fingerprint to achieve the unlocking effect, and then log in to the smart phone A.

The existing fingerprint identifier is mainly provided with an image capturing device on the circuit board, and a light guiding plate is disposed above the image capturing device, and a light emitting diode is disposed on a side of the light guiding plate to utilize the light emitting diode The released light is introduced into the light guide plate, so that when the user places the finger on the fingerprint recognition area, the light guide plate can be used to increase the brightness of the finger, so that the image capturing device can read the fingerprint on the finger, and then Perform a fingerprint comparison.

However, in the existing fingerprint recognizer, most of the light-emitting diodes and the image capturing device are simultaneously disposed on the circuit board, which causes the process of the process to be cumbersome and increases the manufacturing cost.

Another existing fingerprint identifier integrates the image capturing device, the light guide plate and the light-emitting diode together, and then fixes it on the circuit board. However, the overall structure design and volume of this type of fingerprint reader are quite large. Therefore, when it is mounted on a smart phone, the smart phone is too large to meet the slim and portable effect.

In this way, how to provide a light-shielding structure for a fingerprint identification board that is applied to an electronic device, can be placed by a finger, and provides brightness required for fingerprint collection, and is a technology that is intended to be solved by the creative device. Means and their main purpose.

In order to achieve the above object, a fingerprint identification board light guiding structure is mainly disposed between a circuit board and a protection board, and is used for enclosing an image capturing device, which comprises a frame. a body, a plurality of laterally emitting light emitting diodes, and a light guide plate. The frame body has a hollow portion at the center, and the frame body has a plurality of pairs of conductive portions, each pair of conductive portions includes a first conductive portion and a second conductive portion spaced apart from each other, and respectively extend to the bottom of the frame body to form a first portion a second contact point; a plurality of laterally emitting light emitting diodes disposed on the frame body and electrically connected to the conductive portion; the light guide plate covering the hollow portion of the frame body, so that the light emitting diode surrounds the light guide plate Around the side walls.

Therefore, through the light guiding structure of the fingerprint identification board of the present invention, directly mounted on the circuit board and covering the image capturing device, a fingerprint identifier can be formed on the electronic device, thereby simplifying the manufacturing process of the electronic device and achieving The effect of thinning the electronic device.

The frame body is further recessed from the upper surface to form a stepped portion, the stepped portion ring is disposed outside the hollow portion, and the conductive portions are disposed on the step portion.

Wherein, the step portion further protrudes toward the hollow portion to form a boss, and the boss portion is provided with the hollow portion for supporting the light guide plate.

The first conductive portion is connected in series with each other through the first conductive portion, and the second conductive portions are connected in series with each other through the second conductive portion. The first conductive portion is disposed on the upper surface, and the second conductive portion is connected to the upper surface. The part is arranged on the boss.

The stepped portion is formed with a plurality of through holes penetrating the frame body, and the first conductive portion and the second conductive portion respectively extend through the through hole to the lower surface of the frame to form the first contact and the second contact.

Wherein, a protruding portion is protruded outwardly from the four end edges of the light guide plate, and the protruding portions corresponding to the end edge corners have mutually corresponding shapes.

A‧‧‧Smart Phone

B‧‧‧ fingerprint identification area

10‧‧‧ Fingerprinting plate light guiding structure

20‧‧‧ boards

30‧‧‧Image capture device

40‧‧‧protection board

50‧‧‧ frame

51‧‧‧ upper surface

52‧‧‧ lower surface

53‧‧‧ Hollow

54‧‧‧Electrical Department

541‧‧‧First Conductive Department

542‧‧‧Second Conductive Department

543‧‧‧First Guide

544‧‧‧Second Guide

545‧‧‧ first joint

546‧‧‧second junction

55‧‧‧Steps

56‧‧‧Boss

57‧‧‧through hole

60‧‧‧Lighting diode

70‧‧‧Light guide

71‧‧‧Protruding

Figure 1 is a schematic diagram of a conventional electronic device.

Figure 2 is a schematic cross-sectional view of the creation of the creation.

Figure 3 is a front perspective view of the creation.

Figure 4 is an exploded view of the creation.

Figure 5 is a schematic plan view of the creation.

Figure 6 is a perspective view of the back side of the creation.

Figure 7 is a schematic cross-sectional view of the creation.

Fig. 8 is a partially enlarged schematic view of Fig. 7.

As shown in FIG. 2, the fingerprint guiding plate light guiding structure 10 of the present invention is mainly used for being disposed on a circuit board 20 and enclosing an image capturing device 30.

The embodiment is a main implementation of the smart phone. The fingerprint light guide structure 10 is disposed on the circuit board 20 and covers the image capturing device 30. The fingerprint light guiding plate structure 10 is provided. Further, a protection board 40 is further disposed, so that the fingerprint recognition board light guiding structure 10 is fixed between the circuit board 20 and the protection board 40. In this embodiment, the protection board 40 can be made of glass, plastic or any see-through material. production.

As shown in FIG. 3 and FIG. 4, the fingerprint guiding plate light guiding structure 10 of the present invention comprises a frame body 50, a plurality of laterally emitting light emitting diodes 60, and a light guiding plate 70.

The frame 50 has an upper surface 51 and a lower surface 52 corresponding to the upper surface 51. A hollow portion 53 is formed in the center, and at least one pair of conductive portions 54 are formed on the frame 50. Each pair of conductive portions 54 includes The first conductive portion 541 and the second conductive portion 542 are spaced apart from each other. In the embodiment, a plurality of pairs of conductive portions 54 are formed on the frame 50, and the first conductive portions 541 in each pair of conductive portions 54 are connected in series. The second conductive portions 542 are also connected in series to each other.

In the embodiment, the frame body 50 is recessed downwardly from the upper surface 51 to form a stepped portion 55. The stepped portion 55 is annularly disposed outside the hollow portion 53 and further protrudes from the step portion 55 toward the hollow portion 53. The boss 56 has a boss 56 formed in the hollow portion 53 , and the first conductive portion 541 and the second conductive portion 542 of the conductive portion 54 are disposed on the step portion 55 .

At the same time, as shown in FIG. 5 , the first conductive portions 541 are connected in series through the first guiding portion 543 , and the first guiding portion 543 is disposed on the upper surface 51 of the frame 50 . The second conductive portions 542 are connected in series through the second guiding portion 544 , and the second guiding portion 544 is disposed above the boss 56 .

In addition, as shown in FIG. 6, the frame body 50 is further formed with a plurality of through holes 57 in the direction of the lower surface 52 of the step portion 55, so that the portion of the first conductive portion 541 and the second conductive portion 542 pass through the through holes. The surface of the surface 57 extends to the lower surface 52 to form at least a first contact 545 and a second contact 546, so that the frame 50 can pass through the first contact 545 and the second contact 546 and the circuit board 20 Electrically connected and fixed to the circuit board 20.

In a practical application, the first conductive portion 541 and the second conductive portions 542 can be independent, and respectively extend to the lower surface 52 of the frame 50 to form a plurality of first contacts 545 and second contacts 546; Alternatively, the first conductive portions 542 and the second conductive portions 542 may be connected in parallel with each other. The number of first contacts 545 and second contacts 546 may be adjusted depending on the design of the circuit board 20.

The plurality of laterally-emitting light-emitting diodes 60 are disposed on the frame 50, and each of the laterally-emitting light-emitting diodes 60 corresponds to a pair of conductive portions 54 and is respectively first with each pair of conductive portions 54. The conductive portion 541 and the second conductive portion 542 are electrically connected to each other, and the light-emitting diodes 60 that emit light laterally are electrically connected to the circuit board 20 to project light into the hollow portion 53 of the frame 50.

The light guide plate 70 is disposed on the boss 56 of the frame 50 and located above the hollow portion 53 so that the plurality of laterally-emitting light-emitting diodes 60 are disposed around the periphery of the light guide plate 70, thereby causing lateral illumination. The light projected by the LEDs 60 enters the light guide plate 70 and is refracted in the light guide plate 70 to achieve the effect of illuminating the light guide plate 70.

In addition, at the four end edges of the light guide plate 70, a protruding portion 71 is further protruded outwardly, and the protruding portions 71 respectively cover the step portion 55 of the frame 50. The protruding portions 71 of each of the diagonal corners have a shape corresponding to each other, and are further fixed to the frame body 50 through the protruding portions 71.

As shown in FIG. 2, FIG. 7 and FIG. 8, since the central portion of the frame 50 has a hollow portion 53, the frame 50 is fixed to the circuit board through the first contact 545 and the second contact 546 at the bottom. When 20 is up, the frame 50 can be effectively covered on the outside of the image capturing device 30.

The laterally-emitting light-emitting diode 60 is disposed in the step portion 55 of the frame 50 and is disposed around the periphery of the light guide plate 70, thereby enabling the light emitted by the laterally-emitting light-emitting diode 60. , effectively enters the light guide plate 70, thereby uniformly illuminating the light guide plate 70.

When the finger is placed on the light guide plate 70 or is disposed above the light guide plate 70 via the protective plate 40, the light guide plate 70 can be uniformly illuminated through the laterally-emitting light-emitting diodes 60, thereby further illuminating the image. The capturing device 30 can more clearly capture the fingerprint lines on the finger, thereby improving the recognition effect.

In addition, since the laterally-emitting light-emitting diodes 60 are integrated into the frame 50, the fingerprint identification plate light guiding structure 10 of the present invention can be directly fixed on the circuit board 20, and the electronic device is reduced. The assembly process greatly reduces costs. Furthermore, the image capturing device 30 is independently disposed on the circuit board 20, and is packaged by the fingerprint identification plate light guiding structure 10 of the present invention. The cover can further simplify the size of the electronic device and achieve the purpose of thinning and thinning the electronic device.

In actual assembly, the frame 50 can be separately mounted on the circuit board 20, and then the light guide plate 70 is mounted under the protection board 40, and the circuit board 20 and the protection board 40 are disposed at a position relative to the frame 50. The assembly is performed, so that the image capturing device 30 can be effectively mounted at the central position of the hollow portion 53, so that the image capturing device 30 can collect the fingerprint more efficiently, thereby providing an assembly. The correct fingerprint identification plate light guiding structure 10.

Compared with the prior art, the light guiding structure of the fingerprint identification board of the present invention mainly achieves the brightness required for collecting fingerprints when the application is applied to the electronic device through a simple structure, and at the same time, the volume is thin and light.

10‧‧‧ Fingerprinting plate light guiding structure

50‧‧‧ frame

60‧‧‧Lighting diode

70‧‧‧Light guide

Claims (10)

A fingerprint identification board light guiding structure is mounted on a circuit board to cover an image capturing device, comprising: a frame body having a hollow portion at the center, having an upper surface and a lower surface, the upper surface having a plurality of pairs of conductive portions, the pair of conductive portions including the first conductive portion and the second conductive portion spaced apart from each other, and the first conductive portions are connected in series to each other and partially extend to the lower surface to form at least one first contact The second conductive portions are connected in series to each other and partially extend to the lower surface to form at least one second contact; a plurality of laterally emitting light emitting diodes are disposed on the upper surface of the frame, and each lateral direction The illuminating light-emitting diodes respectively correspond to the pair of conductive portions and are electrically connected to the first conductive portion and the second conductive portion respectively; and at least one light guide plate covers the hollow portion of the frame body, and the light-emitting diode The sidewall of the light guide plate is adjacent to the laterally-emitting light-emitting diodes, and the laterally-emitting light-emitting diodes surround the periphery of the light guide plate. The light guide structure of the fingerprint identification board of claim 1, wherein the frame body is further recessed from the upper surface to form a stepped portion, the stepped portion is disposed outside the hollow portion, and the conductive portions are Set at the step. The light guide structure of the fingerprint identification board of claim 2, wherein the step portion protrudes toward the hollow portion with a boss, and the boss is provided with the hollow portion for supporting the light guide plate. The light guide structure of the fingerprint identification board of claim 3, wherein the first conductive portions are connected in series with each other through the first conductive portions, and the second conductive portions are connected in series with each other through the second conductive portions. A guiding portion is disposed on the upper surface, and the second guiding portion is disposed on the boss. The light guide structure of the fingerprint identification board of claim 2, wherein the step portion is formed with a plurality of through holes penetrating through the frame body, and the first conductive portion and the second conductive portion respectively extend through the surface of the through hole The first contact and the second contact are formed on the lower surface of the frame. The light guide structure of the fingerprint identification board of claim 1, wherein a convex portion is protruded outwardly from the four end edges of the light guide plate. The fingerprint identification plate light guiding structure according to claim 6, wherein the two corresponding edge angle projections have mutually corresponding shapes. A fingerprint identification board light guiding structure is mounted on a circuit board to cover an image capturing device, comprising: a frame body having a hollow portion at the center, having an upper surface and a lower surface, the upper surface having a plurality of pairs of conductive portions, wherein each of the pair of conductive portions includes a first conductive portion and a second conductive portion that are spaced apart from each other, and the first conductive portions and the second conductive portions respectively extend to the lower surface to form a plurality of a contact point and a plurality of second contacts; a plurality of laterally emitting light emitting diodes are disposed on the upper surface of the frame body, and each of the laterally emitting light emitting diodes corresponds to a pair of conductive portions, and respectively The first conductive portion and the second conductive portion are electrically connected to each other; and at least one light guide plate covers the hollow portion of the frame, and the sidewall of the light guide plate is adjacent to the laterally illuminated light emitting diodes And surrounding the periphery of the light guide plate with the laterally emitting light emitting diodes. The light guide structure of the pattern recognition board of claim 8, wherein the frame body is further recessed downwardly from the upper surface to form a stepped portion, the stepped portion is disposed outside the hollow portion, and the conductive portions are Set at the step. The illuminating structure of the embossing plate of claim 9, wherein the step portion protrudes toward the hollow portion with a boss, and the boss is provided with the hollow portion for supporting the light guide plate.