TWM621518U - Light fingerprint module - Google Patents

Abstract

A light fingerprint module including a fingerprint recognition module, a light guide film, at least one light-emitting element, a light-transmitting protective cover, and a printing layer is provided. The light guide film is disposed on the fingerprint recognition module. The light guide film has a top surface and a bottom surface opposite to each other, and has a side surface connected between the top surface and the bottom surface. The at least one light-emitting element is disposed on the fingerprint recognition module to provide a light beam to the light guide film. The light-transmitting protective cover is disposed on the light guide film. The printing layer is disposed on the light-transmitting protective cover to form at least one light-transmitting area on the light-transmitting protective cover. The printing layer is located between the light-guiding film and the light-transmitting protective cover, wherein the light guide film transmits the light beam to emit from the at least one light-transmitting area, thereby forming an illumination pattern.

Description

Fingerprint switch light-emitting module

The new creation relates to a functional module, and especially relates to a fingerprint switch light-emitting module.

Most of the existing fingerprint identification modules are designed to be equipped with a fingerprint sensor chip, and through the Serial Peripheral Interface Bus (SPI), the sensed fingerprint signal is transmitted to a microcontroller unit ( microcontroller unit, MCU), or directly to the system platform host. Finally, it is transferred to the host (for example, electronic applications such as notebook computers, smart phones or door locks) for signal calculation or utilization.

However, in the current market, no fingerprint switch module that can emit light from the body and has the function of fingerprint identification has been designed. Therefore, how to design self-luminous signs around or/and at the center of the fingerprint switch module to increase the aesthetic effect of the product is a goal that needs to be done in the art.

The novel creation provides a fingerprint switch light-emitting module, which can simultaneously have the functions of triggering an electronic device, self-illuminating and fingerprint identification.

The novel creation provides a fingerprint switch light-emitting module, which includes a fingerprint identification module, a light-guiding film, at least one light-emitting element, a light-transmitting protective cover plate and a printing layer. The light guide film is arranged on the fingerprint identification module. The light guide film has opposite top surfaces, bottom surfaces, and side surfaces connected between the top surfaces and the bottom surfaces. At least one light-emitting element is disposed on the fingerprint identification module to provide light beams to the light guide film. The light-transmitting protective cover plate is disposed on the light-guiding film. The printed layer is disposed on the light-transmitting protective cover plate to form at least one light-transmitting area on the light-transmitting protective cover plate. The printing layer is located between the light-guiding film and the light-transmitting protective cover, wherein the light-guiding film transmits light beams to emit light from at least one light-transmitting area, thereby forming an illumination pattern.

In an embodiment of the present invention, the above-mentioned fingerprint identification module includes a circuit element and a capacitive fingerprint chip. The capacitive fingerprint chip is disposed on the circuit element, and the light guide film surrounds the capacitive fingerprint chip.

In an embodiment of the present invention, the above-mentioned light guide film has an opening, and the capacitive fingerprint chip is located in the opening.

In an embodiment of the present invention, the capacitive fingerprint chip described above has a sensing surface, and the top surface of the light guide film is coplanar with the sensing surface.

In an embodiment of the present invention, the capacitive fingerprint chip described above has a sensing surface, and the plane where the top surface of the light guide film is located is higher than the plane where the sensing surface is located.

In an embodiment of the present invention, the above-mentioned capacitive fingerprint chip has a sensing surface, and the plane where the top surface of the light guide film is located is lower than the plane where the sensing surface is located.

In an embodiment of the present invention, the above at least one light-emitting element is connected to the side surface of the light guide film, and the at least one light-emitting element does not overlap with the light guide film in the vertical direction.

In an embodiment of the present invention, the above-mentioned at least one light-emitting element is connected to the bottom surface of the light guide film, and the at least one light-emitting element overlaps the light guide film in the vertical direction.

In an embodiment of the present invention, the number of the above-mentioned at least one light-emitting element is plural and evenly distributed around the light-guiding film.

In an embodiment of the present invention, the above-mentioned light guide films have the same height in the horizontal direction.

In an embodiment of the present invention, the above-mentioned light guide film includes a first part and a second part. The thickness of the first portion is greater than the thickness of the second portion, and the second portion surrounds the first portion.

In an embodiment of the present invention, the above-mentioned printing layer is formed on the bottom of the light-transmitting protective cover by printing, coating or coating.

In an embodiment of the present invention, the area covered by the above-mentioned printing layer in the horizontal direction is smaller than the area covered by the light-transmitting protective cover plate in the horizontal direction.

In an embodiment of the present invention, the above-mentioned at least one light-transmitting area is formed by an area of the light-transmitting protective cover plate that does not overlap with the printing layer.

In an embodiment of the present invention, the above-mentioned at least one light-transmitting area includes a peripheral area and a central area, and the peripheral area and the central area are spaced apart.

In an embodiment of the present invention, the material of the above-mentioned light-transmitting protective cover plate is the same as that of the light-guiding film.

In an embodiment of the present invention, the above-mentioned light-transmitting protective cover plate and the light-guiding film are integrally formed.

Based on the above, in the fingerprint switch light-emitting module of the present invention, the light-guiding film is disposed on the fingerprint identification module, and at least one light-emitting element is disposed on the fingerprint identification module and surrounds the light-guiding film. The light-transmitting protective cover plate is arranged on the light guide film, and the printed layer is arranged on the bottom side of the light-transmitting protective cover plate. Therefore, the light guide film can transmit the light beam to emit light from the area of the light-transmitting protective cover plate that does not overlap with the printing layer, thereby forming an illumination pattern. In this way, the functions of triggering the electronic device by the user, self-illumination and fingerprint identification can be provided at the same time, and thus a thin fingerprint switch light-emitting module structure can be realized.

In order to make the above-mentioned features and advantages of the novel creation more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

FIG. 1 is a schematic diagram of a fingerprint switch light-emitting module according to an embodiment of the new invention. FIG. 2 is a schematic exploded perspective view of the fingerprint switch light-emitting module of FIG. 1 . FIG. 3 is a schematic top view of the fingerprint switch light-emitting module of FIG. 1 . Please refer to Figure 1 to Figure 3. This embodiment provides a fingerprint switch light-emitting module 100 , including a fingerprint identification module 110 , a light guide film 120 , at least one light-emitting element 130 , a light-transmitting protective cover 140 and a printing layer 150 . The fingerprint switch light-emitting module 100 can be installed on an electronic device for personal use, such as a computer, a tablet, etc., and the present invention is not limited thereto.

Specifically, the fingerprint recognition module 110 includes a circuit element 112 and a capacitive fingerprint chip 114 . The circuit element 112 is, for example, a circuit board, and is electrically connected to other circuit devices in the electronic device. The capacitive fingerprint chip 114 is, for example, a capacitive sensing element, which is used for sensing the intensity of the electric charges of the peaks and valleys of the fingerprint to generate an electronic signal, so as to identify user information, such as a fingerprint. However, the present invention does not limit the type or form of the fingerprint recognition module 110 in the fingerprint switch light-emitting module 100. The detailed structure and implementation can be adequately taught, suggested, and implemented by the general knowledge in the technical field. Therefore, No longer.

The light guide film 120 is disposed on the fingerprint identification module 110 and surrounds the capacitive fingerprint chip 114 of the fingerprint identification module 110 . The light guide film 120 has an opposite top surface S1, a bottom surface S2, and a side surface S3 connected between the top surface S1 and the bottom surface S2. The light guide film 120 is used to receive the light beam L provided from the outside to transmit it evenly inside, so as to emit light outward from each surface or a designated surface (eg, the top surface S1 ).

Structurally, the light guide film 120 has an opening O, and the capacitive fingerprint chip 114 is located in the opening O. In other words, the capacitive fingerprint chip 114 is located in the center of the light guide film 120 , the shape of the opening O is adapted to the shape of the capacitive fingerprint chip 114 , and the light guide film 120 surrounds the capacitive fingerprint chip 114 . Therefore, the overall structure thickness can be further reduced. In this embodiment, the capacitive fingerprint chip 114 has a sensing surface S4 , and the top surface S1 of the light guide film 120 is coplanar with the sensing surface S4 of the capacitive fingerprint chip 114 . However, in other embodiments, the plane where the top surface S1 of the light guide film 120 is located may be higher or lower than the plane where the sensing surface S4 of the capacitive fingerprint chip 114 is located, and the invention is not limited thereto.

In addition, in this embodiment, the light guide film 120 includes a first portion 122 and a second portion 124 . The thickness of the first portion 122 is greater than that of the second portion 124 , and the second portion 124 surrounds the first portion 122 . Therefore, the thickness of the surrounding structure can be further reduced, or a step can be generated by the height difference between the first part 122 and the second part 124, so as to be suitable for assembling different kinds of structures on the upper layer, such as the casing of an electronic device covered, but the present invention is not limited to this. In this embodiment, the shape of the first part 122 is adapted to, for example, the shape of the light-transmitting protective cover plate 140 , and the shape of the second part 124 is adapted to, for example, the shape of the circuit element 112 , but the invention does not Not limited to this. In this embodiment, the first part 122 and the second part 124 are integrally formed. However, in different embodiments, the light guide film 120 can also be designed to have the same height in the horizontal direction, that is, there are no two different parts with height difference to maintain the consistency and reduce the difficulty of production, but the invention does not Not limited to this.

The light emitting element 130 is disposed on the fingerprint identification module 110 and surrounds the light guide film 120 . In detail, the light emitting element 130 is connected to the side surface S3 of the light guide film 120, and directly provides the light beam L toward the side surface S3. In other words, the light emitting surface S5 of the light emitting element 130 is parallel to the side surface S3 of the light guide film 120 , and the light emitting surface S5 of the light emitting element 130 does not directly face the user's front view. In other words, in the vertical direction, the light emitting element 130 and the light guide film 120 do not overlap. Therefore, the overall structure thickness can be further reduced. In this embodiment, the number of the light-emitting elements 130 is two, and the light-emitting elements 130 are geometrically symmetrically distributed on the two opposite side surfaces S3 of the second portion 124 of the light-guiding film 120 . However, in different embodiments, the number of light-emitting elements 130 may be singular or plural, and the present invention is not limited thereto. On the other hand, in different embodiments, the light-emitting element 130 can also be connected to the bottom surface S2 of the light guide film 120 in a modified configuration, so that the light-emitting element 130 overlaps with the light guide film 120 in the vertical direction, and in different embodiments , the light-emitting element 130 can selectively provide the light beam L upward or downward, but the novel creation is not limited to this.

The light-transmitting protective cover plate 140 is disposed on the light-guiding film 120 to protect the internal structure. The light-transmitting protective cover plate 140 is, for example, a light-transmitting glass cover plate, or an optional light-transmitting plastic cover plate, but the present invention is not limited thereto. In this embodiment, the shape of the light-transmitting protective cover plate 140 is adapted to the first portion 122 of the light guide film 120 , and its area is slightly larger than that of the first portion 122 , but the present invention is not limited to this.

The printed layer 150 is disposed on the light-transmitting protective cover 140 to form at least one light-transmitting area P in the light-transmitting protective cover 140 , and the printed layer 150 is located between the light-guiding film 120 and the light-transmitting protective cover 140 . In other words, the non-overlapping region of the light-transmitting protective cover plate 140 and the printing layer 150 becomes the light-transmitting region P, which allows the light emitted by the light-guiding film 120 to pass through. For example, in this embodiment, the light-transmitting area P includes a peripheral area and a central pattern area (ie, a power symbol pattern), and the peripheral area and the central area are spaced apart. That is, the printing layer 150 is disposed on the bottom of the light-transmitting protective cover plate 140 . Specifically, the printing layer 150 is formed on the bottom of the light-transmitting protective cover plate 140 by printing, coating or coating. The printing layer 150 is formed of an opaque material for shielding light to form a special light emitting pattern. In this embodiment, the area covered by the printing layer 150 in the horizontal direction is smaller than the area covered by the light-transmitting protective cover plate 140 in the horizontal direction. For example, in this embodiment, the edge of the light-transmitting protective cover plate 140 does not have the printing layer 150 . Therefore, the light can be transmitted to the user from the edge of the light-transmitting protective cover plate 140, so that the user can obtain a good appearance and vision. In other words, the edge of the light-transmitting protective cover plate 140 is a part of the light-transmitting area P. As shown in FIG. It is worth mentioning that, in another embodiment, the material of the light-transmitting protective cover plate 140 may be the same as the material of the light-guiding film 120 , but the present invention is not limited to this. Therefore, the light display effect of the light-transmitting region P can be further improved. For example, the light-transmitting protective cover 140 and the light-guiding film 120 can be integrally formed. In this way, the manufacturing process can also be simplified, and the light display effect can be improved at the same time.

In the present embodiment, the light beam L provided by the light-emitting element 130 is transmitted through the light guide film 120, and the light guide film 120 transmits the light beam L from the light-transmitting protective cover 140 from the area that does not overlap the printed layer 150 (ie, The light-transmitting area P) emits light, thereby forming an illumination pattern. In this way, with the configuration of this embodiment, the fingerprint switch light-emitting module 100 can simultaneously provide the functions of the user to trigger the electronic device, self-illumination and fingerprint identification. In addition, with the configuration of this embodiment, a thin fingerprint switch light-emitting module 100 structure can be realized.

To sum up, in the fingerprint switch light-emitting module of the present invention, the light-guiding film is disposed on the fingerprint identification module, and at least one light-emitting element is disposed on the fingerprint identification module and surrounds the light-guiding film. The light-transmitting protective cover plate is arranged on the light guide film, and the printed layer is arranged on the bottom side of the light-transmitting protective cover plate. Therefore, the light guide film can transmit the light beam to emit light from the area of the light-transmitting protective cover plate that does not overlap with the printing layer, thereby forming an illumination pattern. In this way, a user-triggered electronic device, self-illumination and fingerprint identification functions can be provided at the same time, and a fingerprint switch light-emitting module structure that can be thinned can be realized.

Although the present invention has been disclosed above with examples, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the new creation should be determined by the scope of the appended patent application.

100: Fingerprint switch light-emitting module 110: Fingerprint recognition module 112: Circuit Components 114: Capacitive fingerprint chip 120: light guide film 122: Part One 124: Part II 130: Light-emitting element 140: Light-transmitting protective cover 150: Printing layer L: Beam O: open P: light transmission area S1: Top surface S2: Bottom S3: Side S4: Sensing surface S5: light-emitting surface

FIG. 1 is a schematic diagram of a fingerprint switch light-emitting module according to an embodiment of the new invention. FIG. 2 is a schematic exploded perspective view of the fingerprint switch light-emitting module of FIG. 1 . FIG. 3 is a schematic top view of the fingerprint switch light-emitting module of FIG. 1 .

100: Fingerprint switch light-emitting module

110: Fingerprint recognition module

112: Circuit Components

114: Capacitive fingerprint chip

120: light guide film

122: Part One

124: Part II

130: Light-emitting element

140: Light-transmitting protective cover

150: Printing layer

O: open

S1: Top surface

S2: Bottom

S3: Side

S4: Sensing surface

S5: light-emitting surface

Claims (17)

A fingerprint switch light-emitting module, comprising: Fingerprint identification module; a light guide film, disposed in the fingerprint identification module, the light guide film has an opposite top surface, a bottom surface, and a side surface connected between the top surface and the bottom surface; at least one light-emitting element disposed on the fingerprint identification module to provide light beams to the light guide film; a light-transmitting protective cover plate, disposed on the light-guiding film; and a printed layer, disposed on the light-transmitting protective cover plate to form at least one light-transmitting area on the light-transmitting protective cover plate, the printed layer is located between the light-guiding film and the light-transmitting protective cover plate, wherein The light guide film transmits the light beam to emit light from the at least one light-transmitting area, thereby forming an illumination pattern. The fingerprint switch light-emitting module according to claim 1, wherein the fingerprint identification module comprises a circuit element and a capacitive fingerprint chip, the capacitive fingerprint chip is disposed on the circuit element, and the light guide film surrounds The capacitive fingerprint chip. The fingerprint switch light-emitting module of claim 2, wherein the light guide film has an opening, and the capacitive fingerprint chip is located in the opening. The fingerprint switch light-emitting module of claim 2, wherein the capacitive fingerprint chip has a sensing surface, and the top surface of the light guide film is coplanar with the sensing surface. The fingerprint switch light-emitting module according to claim 2, wherein the capacitive fingerprint chip has a sensing surface, and the plane where the top surface of the light guide film is located is higher than the plane where the sensing surface is located. The fingerprint switch light-emitting module according to claim 2, wherein the capacitive fingerprint chip has a sensing surface, and the plane where the top surface of the light guide film is located is lower than the plane where the sensing surface is located. The fingerprint switch light-emitting module according to claim 1, wherein the at least one light-emitting element is connected to the side surface of the light guide film, and the at least one light-emitting element is not vertically aligned with the light guide film. overlapping. The fingerprint switch light-emitting module of claim 1, wherein the at least one light-emitting element is connected to the bottom surface of the light guide film, and the at least one light-emitting element overlaps the light guide film in a vertical direction . The fingerprint switch light-emitting module according to claim 1, wherein the number of the at least one light-emitting element is plural and distributed evenly around the light-guiding film. The fingerprint switch light-emitting module according to claim 1, wherein the heights of the light guide films in the horizontal direction are the same. The fingerprint switch light-emitting module according to claim 1, wherein the light guide film comprises a first part and a second part, the thickness of the first part is greater than the thickness of the second part, and the second part surrounds the the first part. The fingerprint switch light-emitting module according to claim 1, wherein the printing layer is formed on the bottom of the light-transmitting protective cover plate by printing, coating or coating. The fingerprint switch light-emitting module according to claim 1, wherein the area covered by the printing layer in the horizontal direction is smaller than the area covered by the light-transmitting protective cover plate in the horizontal direction. The fingerprint switch light-emitting module according to claim 1, wherein the at least one light-transmitting area is formed by an area where the light-transmitting protective cover plate does not overlap with the printing layer. The fingerprint switch light-emitting module according to claim 1, wherein the at least one light-transmitting area includes a peripheral area and a central area, and the peripheral area and the central area are spaced apart. The fingerprint switch light-emitting module according to claim 1, wherein the material of the light-transmitting protective cover plate is the same as the material of the light-guiding film. The fingerprint switch light-emitting module according to claim 16, wherein the light-transmitting protective cover plate and the light-guiding film are integrally formed.

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