TWM581727U - Image capturing device - Google Patents

Abstract

An image capturing device including a cover plate, an image capturing module, a fame body, a first adhesive layer, and a second adhesive layer is provided. The fame body and the image capturing module are located at the same side of the cover plate. The fame body is joined to the cover plate via the first adhesive layer. The image capturing module is joined to the fame body via the second adhesive layer. An orthographic projection of the second adhesive layer on the cover plate falls within an orthographic projection of the fame body on the cover plate.

Description

Image capture device

The present invention relates to an electronic device, and more particularly to an image capturing device.

The types of biometrics include face, sound, iris, retina, veins, palmprint, and fingerprint recognition. According to the different sensing methods, the biometric identification device can be divided into optical, capacitive, ultrasonic and thermal sensing.

The optical biometric identification device mainly performs biometric identification by capturing an image of a biometric image through an image capturing module. In a conventional optical biometric device, the image taking module is attached to the cover (or display panel) via an adhesive layer, and the fit is partially adhered rather than fully conformed. Under this structure, in the area where the adhesive layer is disposed, the light transmission medium between the cover and the image capturing module is an adhesive layer, and in the area where the adhesive layer is not provided, the cover and the image capturing module are The intermediate light transfer medium is not an adhesive layer (for example, air). Since different light transmission media have refractive index differences, the user can easily perceive the appearance of the image capturing module when operating the biometric device.

The novel creation provides an image capturing device, and the image capturing module is not easily perceived by a user.

An image capturing device created by the present invention comprises a cover plate, an image taking module, a frame body, a first adhesive layer and a second adhesive layer. The frame and the image capturing module are located on the same side of the cover. The frame is joined to the cover plate via the first adhesive layer. The image taking module is joined to the frame via the second adhesive layer. The orthographic projection of the second adhesive layer on the cover plate falls within the orthographic projection of the frame on the cover.

In an embodiment of the present invention, the cover comprises a transparent cover, an organic light emitting display panel, a touch panel or a combination of at least two of the above

In an embodiment of the present invention, there is an air gap between the cover and the image taking module.

In an embodiment of the present invention, the image taking module includes a carrier, a sensor, a band pass filter element, a collimator, and at least one support. The sensor is placed on the carrier board. The band pass filter element is disposed on the sensor. The collimator is disposed on the band pass filter element with an air gap between the collimator and the cover. The at least one support member is disposed on the carrier and located at a periphery of the sensor.

In an embodiment of the novel creation, the band pass filter element is an infrared filter.

In an embodiment of the present invention, the second adhesive layer is located between the carrier and the frame.

In an embodiment of the novel creation, the second adhesive layer engages the carrier with the frame. The at least one support member is located between the second adhesive layer and the sensor, and an air gap exists between the at least one support member and the cover plate.

In an embodiment of the novel creation, the at least one support member and the sensor maintain a distance therebetween.

In an embodiment of the present invention, the at least one support contacts the carrier, the sensor, the band pass filter, and the collimator, and the at least one support filters the sensor and the band pass The component and the collimator are attached to the carrier.

In an embodiment of the present invention, the at least one support member is located between the carrier and the frame. The at least one support member is engaged with the frame via the second adhesive layer. At least a portion of the orthographic projection of the at least one support member on the cover plate falls within an orthographic projection of the frame on the cover plate.

In the image capture device of the present invention, the frame is attached to the cover via the first adhesive layer, the image capture module is attached to the frame via the second adhesive layer, and the second adhesive layer is on the cover. The orthographic projection on the board falls within the orthographic projection of the frame on the cover. Therefore, the second adhesive layer is covered by the frame when viewed from the side of the cover. By hiding the second adhesive layer under the frame, the second adhesive layer can be prevented from affecting the visual effect. In addition, since the image capturing module is indirectly joined to the cover plate via the second adhesive layer, the frame body and the first adhesive layer, the adhesive layer can be disposed between the cover plate and the image capturing module not covered by the frame body. . Under this design, there is only one light transmission medium (for example, air) between the cover and the image capturing module that is not covered by the frame, so that the image capturing module is not easily perceived by the user.

The above described features and advantages of the present invention will become more apparent and understood from the following description.

The directional terms mentioned in the embodiments, such as "upper", "lower", "before", "after", "left", "right", etc., are only referring to the directions of the drawings. Therefore, the directional terminology used is for illustrative purposes and is not intended to limit the novel creation. In the drawings, the drawings depict typical features of the methods, structures, and/or materials used in the particular exemplary embodiments. However, the drawings are not to be interpreted as limiting or limiting the scope or nature of the embodiments disclosed. For example, the relative size, thickness, and location of layers, regions, and/or structures may be reduced or enlarged for clarity.

In the embodiments, the same or similar elements will be designated by the same or similar numerals, and the description thereof will be omitted. In addition, the features of the different exemplary embodiments can be combined with each other without conflict, and the simple equivalent changes and modifications made by the present specification or the scope of the patent application are still within the scope of the patent. In addition, the terms "first", "second" and the like mentioned in the specification or the scope of the claims are only used to identify discrete elements or to distinguish different embodiments or ranges, and are not intended to limit the number of components. The upper or lower limits are also not intended to limit the order of manufacture or order of the components.

1 to 4 are schematic cross-sectional views of the image taking devices 1 to 4 according to the first to fourth embodiments of the present invention, respectively. Each of the image taking devices 1 to 4 is adapted to capture biometric features of the object to be tested (not shown). For example, the object to be tested may be a finger, and the biometric feature may be a fingerprint or a vein, but is not limited thereto. In an embodiment, the object to be tested may be a palm and the biometric feature may be a palm print.

Referring to FIG. 1 , the image capturing apparatus 1 of the first embodiment includes a cover 10 , an image capturing module 11 , a frame 12 , a first adhesive layer 13 , and a second adhesive layer 14 .

The cover 10 may include a light transmissive cover, an organic light emitting display panel, a touch panel, or a combination of at least two of the above. When the cover 10 is an organic light emitting display panel, the cover 10 can provide a light beam for image taking. In addition, when the cover 10 is a light transmissive cover, the cover 10 can be used to protect the components located thereunder. For example, the transparent cover can be a glass cover or a plastic cover. The glass cover plate may be a chemically strengthened or physically strengthened glass substrate or an unreinforced glass substrate. The plastic cover can be made of polycarbonate (PC), polyethylene terephthalate (PET), polymethylmethacrylate (PMMA) or polyimide (PI). A substrate formed of a material, but not limited thereto. When the cover 10 is an organic light emitting display panel, the image taking device 1 can further have a display function.

The cover plate 10 has an inner surface SI and an outer surface SO. The inner surface SI is a surface of the cover 10 facing the image taking module 11. The outer surface SO is opposed to the inner surface, and the outer surface SO is a surface of the cover plate 10 facing the object to be tested. When biometric identification is performed, the object to be tested is pressed against the outer surface SO. In other words, the outer surface SO is the pressing surface of the object to be tested.

The image taking module 11 faces the inner surface SI of the cover 10 and is disposed adjacent to the inner surface SI of the cover 10. The image capturing module 11 is configured to intercept an image of the biometric feature for biometric identification. In this embodiment, the image capturing module 11 can be any known optical biometric module. FIG. 1 schematically illustrates an embodiment of the image capturing module 11 , wherein the image capturing module 11 includes a carrier 110 , a sensor 111 , a band pass filter element 112 , a collimator 113 , and at least one support The device 114, but the implementation of the image capturing module 11 is not limited thereto.

The carrier 110 is used for carrying components such as the sensor 111, the band pass filter element 112, the collimator 113, and the support 114 described above. In addition, the carrier 110 may further have circuitry to electrically connect the electronic components disposed thereon with external circuitry. For example, the carrier board 110 may include a Flexible Printed Circuit (FPC) or a Printed Circuit Board (PCB). When the carrier board 110 includes a flexible printed circuit board, the carrier board 110 may further include a stiffener. That is to say, the carrier 110 may be a single layer or a composite board.

The sensor 111 is disposed on the carrier 110. The sensing surface S111 of the sensor 111 faces the cover 10 to receive a light beam (a beam with biometric information) reflected by the object to be tested. For example, the sensor 111 may include a Charge Coupled Device (CCD), a Complementary Metal-Oxide Semiconductor (CMOS), or other suitable kinds of image sensing elements. In the embodiment, the image capturing module 11 further includes a wire 115 and an encapsulation layer 116. The sensor 111 is electrically connected to a circuit on the carrier 110 via a wire 115. The encapsulation layer 116 is disposed on the carrier 110 and covers the wires 115 to protect the wires 115.

The band pass filter element 112 is disposed on the sensor 111 to filter stray light and reduce the interference of stray light on biometric identification. For example, the band pass filter element 112 can be an infrared filter that filters infrared light and allows light other than infrared light to pass. However, the band filtered by the band pass filter element 112 can be changed as needed, and is not limited thereto.

A collimator 113 is disposed on the band pass filter element 112 to collimate the beam transmitted toward the sensor 111. The collimator 113 can be any known collimating element and is not limited herein.

The support member 114 is disposed on the carrier 110 and located at the periphery of the sensor 111. When the object to be tested presses the outer surface SO of the cover 10, the cover 10 is pressed down, and the support member 114 can support the depressed cover 10 to prevent other components in the image taking module 11 from being damaged. The shape of the support member 114 may be columnar or annular. When the shape of the support member 114 is a columnar shape, a plurality of support members 114 may be spaced apart at the periphery of the sensor 111. When the shape of the support member 114 is annular, the annular support member 114 can surround the sensor 111.

The frame 12 and the image capturing module 11 are located on the same side of the cover 10, and the frame 12 is disposed around the periphery of the image capturing module 11 to provide appropriate protection for the image capturing module 11. In addition, the frame may be an opaque frame to shield components that are not intended to be viewed by a user.

The frame 12 is joined to the cover 10 via the first adhesive layer 13. The first adhesive layer 13 may be an optical glue of the same color as the frame 12, such as a dark color or a black optical glue, but is not limited thereto.

The image taking module 11 is joined to the frame 12 via the second adhesive layer 14 . In other words, the image taking module 11 is indirectly joined to the cover 10 via the second adhesive layer 14 , the frame 12 , and the first adhesive layer 13 .

The orthographic projection P14 of the second adhesive layer 14 on the cover 10 falls within the orthographic projection P12 of the frame 12 on the cover 10. That is, the second adhesive layer 14 is covered by the frame 12 when viewed from the side of the cover. FIG. 1 schematically illustrates one of the cases where the orthographic projection P14 falls within the orthographic projection P12. In FIG. 1, the edge of the orthographic projection P14 does not extend beyond the edge of the orthographic projection P12, and the edge of the orthographic projection P14 is aligned with the edge of the orthographic projection P12. However, in another embodiment, the edge of the orthographic projection P14 may not be aligned with the edge of the orthographic projection P12. For example, the edge of the orthographic projection P14 may be retracted by the distance of the edge of the orthographic projection P12, but is not limited thereto.

In the case where the image taking module is directly attached to the cover via the adhesive layer, the region where the adhesive layer is provided (for example, above the support member) and the region where the adhesive layer is not provided (for example, above the collimator) may be affected by the refractive index. The difference causes the reflectance and/or the transmittance to be different between the two regions, so that the user can easily perceive the appearance of the image capturing module when operating the biometric device.

In contrast, attaching the image capturing module 11 to the frame 12 via the second adhesive layer 14 and hiding the second adhesive layer 14 under the frame 12 can prevent the second adhesive layer 14 from affecting the visual effect. In addition, since the image capturing module 11 is indirectly engaged with the cover 10 via the second adhesive layer 14 , the frame 12 , and the first adhesive layer 13 , the adhesive layer can be disposed between the cover 10 and the image capturing module 11 . . That is to say, there may be an air gap AG between the cover 10 and the image capturing module 11. There may be only one light transmission medium (for example, air, that is, between the collimator 113 and the cover 10 and the support member 114 and the cover 10 between the cover 10 and the image capturing module 11 not covered by the frame 12. There is an air gap AG between them without filling the adhesive layer), rather than a combination of multiple light transmitting media (for example, a combination of air and adhesive layers), so the image taking module 11 is not easily perceived by the user.

The image taking device 1 may further include other elements or film layers depending on different needs. For example, the image taking device 1 may further include an anti-reflection layer (not shown). An anti-reflective layer may be disposed on the inner surface SI of the cover 10 to reduce interfacial reflection occurring at the inner surface SI.

Referring to Fig. 2, the main differences between the image pickup device 2 of the second embodiment and the image pickup device 1 of Fig. 1 are as follows. In the image taking device 1, the support member 114 and the second adhesive layer 14 are not overlapped, and only the second adhesive layer 14 of the support member 114 and the second adhesive layer 14 is hidden under the frame 12. In detail, the second adhesive layer 14 is located between the carrier 110 and the frame 12, and the second adhesive layer 14 bonds the carrier 110 to the frame 12. In addition, the support member 114 is located between the second adhesive layer 14 and the sensor 111, and an air gap AG exists between the support member 114 and the cover plate 10.

On the other hand, in the image taking device 2, the support member 214 is overlapped with the second adhesive layer 14, and the support member 214 and the second adhesive layer 14 are collectively hidden under the frame 22. In detail, the support member 214 is also located between the carrier 110 and the frame 22, and the support member 214 is engaged with the frame 22 via the second adhesive layer 14. Specifically, the support member 214 is located between the carrier 110 and the second adhesive layer 14 , and the second adhesive layer 14 is located between the support member 214 and the frame 22 . In addition, at least a portion of the orthographic projection P214 of the support member 214 on the cover 10 falls within the orthographic projection P22 of the frame 22 on the cover 10.

By overlapping the support member 214 and the second adhesive layer 14, the layout area of the two can be effectively reduced, the line layout space is more abundant, and the area of the carrier 110 is reduced, so that the image capturing module 21 is The overall area can be further reduced.

Referring to Fig. 3, the main differences between the image pickup device 3 of the third embodiment and the image pickup device 1 of Fig. 1 are as follows. In the image taking device 1, the distance between the support member 114 and the sensor 111 is maintained (the two are not in contact), and the image taking module 11 further includes an encapsulation layer 116 to protect the wires 115.

On the other hand, in the image taking device 3, the support member 314 contacts the carrier 110, the sensor 111, the band pass filter element 112, and the collimator 113, and the support member 314 filters the sensor 111 and the band pass. The element 112 and the collimator 113 are fixed to the carrier 110. For example, the support 314 can be formed by curing of the encapsulant. Therefore, the imaging module 31 can omit the encapsulation layer 116 of FIG.

Referring to Fig. 4, the main differences between the image taking device 4 of the fourth embodiment and the image capturing device 3 of Fig. 3 are as follows. In the image capturing module 31 of the image taking device 3, the support member 314 does not overlap the frame 12, and the second adhesive layer 14 joins the carrier 110 to the frame 12.

On the other hand, in the image capturing module 41 of the image taking device 4, the support member 414 further extends below the frame body 12 and overlaps the frame body 12. Further, the second adhesive layer 14 engages the support member 414 with the frame 12.

In summary, in the image capturing device of the present invention, the frame is attached to the cover through the first adhesive layer, and the image capturing module is attached to the frame via the second adhesive layer, and the second adhesive layer The orthographic projection on the cover falls within the orthographic projection of the frame on the cover. Therefore, the second adhesive layer is covered by the frame when viewed from the side of the cover. By hiding the second adhesive layer under the frame, the second adhesive layer can be prevented from affecting the visual effect. In addition, since the image capturing module is indirectly joined to the cover plate via the second adhesive layer, the frame body and the first adhesive layer, the adhesive layer can be disposed between the cover plate and the image capturing module not covered by the frame body. . Under this design, there is only one light transmission medium (for example, air) between the cover and the image capturing module that is not covered by the frame, so that the image capturing module is not easily perceived by the user. In an embodiment, the support member of the image capturing module can be overlapped with the second adhesive layer to make the layout space on the carrier board more abundant or the overall area of the image capturing module can be further reduced. In another embodiment, the support can be formed by curing of the encapsulant. In still another embodiment, the support formed by the curing of the encapsulant may be disposed to overlap the second adhesive layer.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the novel creation, and any person skilled in the art can make some changes without departing from the spirit and scope of the novel creation. Retouching, the scope of protection of this new creation is subject to the definition of the scope of the patent application attached.

1, 2, 3, 4‧‧‧ image capture device  10‧‧‧ Cover  11, 21, 31, 41‧‧‧ image capture module  12, 22‧‧‧ frame  13‧‧‧First adhesive layer  14‧‧‧Second Adhesive Layer  110‧‧‧ Carrier Board  111‧‧‧Sensor  112‧‧‧Bandpass filter  113‧‧‧ collimator  114, 214, 314, 414‧‧‧ support  115‧‧‧ wire  116‧‧‧Encapsulation layer  AG‧‧‧Air gap  P12, P14, P22, P214‧‧‧ orthographic projection  S111‧‧‧Sense surface  SI‧‧‧ inner surface  SO‧‧‧ outer surface  

1 to 4 are schematic cross-sectional views of an image taking device according to first to fourth embodiments of the present invention, respectively.

Claims (10)

An image capturing device comprising:  a cover plate  An image capture module;  a frame body, and the image capturing module is located on the same side of the cover plate;  a first adhesive layer, wherein the frame is joined to the cover via the first adhesive layer;  a second adhesive layer, wherein the image capturing module is engaged with the frame through the second adhesive layer, and an orthographic projection of the second adhesive layer on the cover plate falls on the cover of the frame Inside the orthographic projection.   The image capture device of claim 1, wherein the cover comprises a light transmissive cover, an organic light emitting display panel, a touch panel or a combination of at least two of the above. The image capturing device of claim 1, wherein an air gap exists between the cover and the image capturing module. The image capturing device of claim 1, wherein the image capturing module comprises:  One carrier board;  a sensor disposed on the carrier board;  a band pass filter element disposed on the sensor;  a collimator disposed on the band pass filter element, and an air gap between the collimator and the cover; and  At least one support member is disposed on the carrier and located at a periphery of the sensor.   The image taking device of claim 4, wherein the band pass filter element is an infrared filter. The image capturing device of claim 4, wherein the second adhesive layer is located between the carrier and the frame. The image capturing device of claim 6, wherein the second adhesive layer engages the carrier with the frame, the at least one support member is located between the second adhesive layer and the sensor, and the There is an air gap between the at least one support member and the cover plate. The image capturing device of claim 7, wherein the at least one support member and the sensor maintain a distance therebetween. The image capturing device of claim 7, wherein the at least one support member contacts the carrier, the sensor, the band pass filter element, and the collimator, and the at least one support member senses The detector, the band pass filter element, and the collimator are fixed to the carrier. The image capturing device of claim 6, wherein the at least one supporting member is located between the carrier and the frame, and the at least one supporting member is engaged with the frame via the second adhesive layer, and the At least a portion of the orthographic projection of the at least one support member on the cover plate falls within the orthographic projection of the frame on the cover plate.