TWI552593B - Image-capturing module having a built-in flexible dustproof structure - Google Patents

Description

Image capture module with built-in flexible dustproof structure

The invention relates to an image capturing module, in particular to an image capturing module with a built-in flexible dustproof structure.

In recent years, the trend of handheld devices such as mobile phones and PDAs has become increasingly popular, and with the market demand for better handheld devices and smaller size, The group has faced the dual requirements of higher image quality and miniaturization. In view of the improvement of the image quality of the image capture module, on the one hand, the pixel is improved. The market trend is from the original VGA level of 30 pixels, which has progressed to the current two million pixels and five million pixels commonly available on the market. One thousand is a million pixels, and even more has been introduced to a higher level of more than 41 million pixels. In addition to the improvement of pixels, on the other hand, the resolution of the image is taken care of. Therefore, the image capturing module of the handheld device is also developed by the fixed focus image capturing function toward the camera-like optical autofocus function or even the optical zoom function. The optical autofocus function is operated according to different distances and close distances of the target object to appropriately move the lens in the image capturing module, so that the optical image of the image capturing object can be accurately focused on the image sensor. To produce a clear image. At present, the actuation mode that drives the lens movement in the image capturing module is generally common, including stepping motor actuation, piezoelectric actuation, and voice coil motor (VCM) actuation. However, the conventional image capturing module does not design a better dustproof structure.

The embodiment of the invention provides an image capturing module with a built-in flexible dustproof structure.

An image capturing module having a built-in flexible dustproof structure includes an image sensing unit, a frame housing, an actuator structure, and a flexible sleeve provided by one embodiment of the present invention. ring. The image sensing unit includes a carrier substrate and an image sensing chip disposed on the carrier substrate and electrically connected to the carrier substrate. The frame housing is disposed on the carrier substrate and surrounds the image sensing wafer. The actuator structure is disposed on the frame housing and above the image sensing wafer, wherein the actuator structure includes a lens carrier disposed on the frame housing and an movable A movable lens assembly disposed within the lens holder. The flexible collar is sleeved on an outer peripheral surface of the movable lens assembly and abuts against an inner surrounding surface of the lens carrier, wherein the flexible collar follows the movable lens The components move together within the lens mount. Wherein the flexible collar is circumferentially disposed between the inner surrounding surface of the lens carrier and the outer peripheral surface of the movable lens assembly to constitute the built-in flexible Dustproof structure.

Another embodiment of the present invention provides an image capturing module having a built-in flexible dustproof structure, comprising: an image sensing unit, a frame housing, an actuator structure, and a flexible sleeve ring. The image sensing unit includes a carrier substrate and an image sensing chip disposed on the carrier substrate and electrically connected to the carrier substrate. The frame housing is disposed on the carrier substrate and surrounds the image sensing wafer. The actuator structure is disposed on the frame housing and above the image sensing wafer, wherein the actuator structure includes a lens carrier disposed on the frame housing and an movable The movable lens assembly is disposed in the lens carrier, and the inside of the lens carrier has a surrounding movable member. The flexible collar is sleeved on an outer peripheral surface of the movable lens assembly and abuts against an inner surrounding surface of the surrounding movable member of the lens carrier. Wherein the movable lens assembly and the flexible collar together pass through at least two fixing colloids The inside of the surrounding movable member is fixed, and the movable lens assembly is movably disposed in the lens holder through the surrounding movable member. Wherein the flexible collar is disposed between the inner surrounding surface of the surrounding movable member of the lens carrier and the outer peripheral surface of the movable lens assembly to constitute a The built-in flexible dustproof structure.

According to still another embodiment of the present invention, an image capturing module having a built-in flexible dustproof structure includes: an image sensing unit, a frame housing, and an actuator structure. The image sensing unit includes a carrier substrate and an image sensing chip disposed on the carrier substrate and electrically connected to the carrier substrate. The frame housing is disposed on the carrier substrate and surrounds the image sensing wafer. The actuator structure is disposed on the frame housing and above the image sensing wafer, wherein the actuator structure includes a lens carrier disposed on the frame housing and an movable a movable lens assembly disposed in the lens holder, the movable lens assembly having a two-shot injection to be fixed on an outer peripheral surface of the movable lens assembly and abutting against the lens carrier A flexible collar surrounding the surface, and the flexible collar moves within the lens carrier along with the movable lens assembly.

The image capture module provided by the embodiment of the present invention is permeable to the inner surrounding surface of the lens carrier through the flexible collar. "Between the outer peripheral surfaces of the movable lens assembly" or "the movable lens assembly has a two-shot injection to be fixed on the outer peripheral surface of the movable lens assembly and against the inside of the lens holder The flexible collar around the surface is designed to form the built-in flexible dustproof structure. Thereby, when the external dust enters the actuator structure from a gap between the lens carrier or the inner surrounding surface of the surrounding movable member and the outer peripheral surface of the movable lens assembly When the external dust is blocked by the flexible collar disposed between the inner surrounding surface of the lens carrier and the outer peripheral surface of the movable lens assembly, the present invention achieves The purpose of dust prevention.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

M‧‧‧Image Capture Module

1‧‧‧Image sensing unit

10‧‧‧Loading substrate

11‧‧‧Image sensing wafer

111‧‧‧Electrical pads

2‧‧‧Frame housing

200‧‧‧ top opening

3‧‧‧Activity structure

30‧‧‧Lens carrier

3000‧‧‧ inner surrounding surface

30M‧‧‧around movable parts

31‧‧‧Removable lens assembly

3100‧‧‧ outer peripheral surface

3100A‧‧‧First Surrounding Surface

3100B‧‧‧Second surrounding surface

3100C‧‧‧ third surrounding surface

3101‧‧‧Top

3102‧‧‧ bottom

310‧‧‧Flexible collar

4‧‧‧Flexible collar

5‧‧‧ Filter elements

500‧‧‧ upper surface

W‧‧‧Flexible wire

H‧‧‧Fixed colloid

FIG. 1 is an exploded perspective view of an image capturing module according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a combination of the image capturing module according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of another combination of the image capturing module according to the first embodiment of the present invention.

4 is an exploded perspective view of an image capturing module according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of a combination of an image capturing module according to a second embodiment of the present invention.

FIG. 6 is a schematic diagram of another combination of the image capturing module according to the second embodiment of the present invention.

FIG. 7 is an exploded perspective view of an image capturing module according to a third embodiment of the present invention.

FIG. 8 is a schematic diagram of a combination of an image capturing module according to a third embodiment of the present invention.

FIG. 9 is a schematic diagram of another combination of the image capturing module according to the third embodiment of the present invention.

The following describes an embodiment of the "image capturing module having a built-in flexible dustproof structure" disclosed in the present invention by a specific specific example, and those skilled in the art can easily understand the present invention by the contents disclosed in the present specification. Other advantages and benefits. The present invention may be embodied or applied in various other specific embodiments, and various modifications and changes can be made without departing from the spirit and scope of the invention. Further, the drawings of the present invention are merely illustrative, and are not depicted in actual dimensions, that is, the actual dimensions of the related structures are not reflected, which will be described first. The following embodiments are intended to further explain the related art of the present invention, but are not intended to limit the technical scope of the present invention.

[First Embodiment]

As shown in FIG. 1 to FIG. 3 , the first embodiment of the present invention provides an image capturing module M having a built-in flexible dustproof structure, comprising: an image sensing unit 1 and a frame housing 2 , an actuator structure 3 and a flexible collar 4 .

First, as shown in FIG. 1 , the image sensing unit 1 includes a carrier substrate 10 and a The image sensing wafer 11 is disposed on the carrier substrate 10 and electrically connected to the carrier substrate 10. For example, the image sensing wafer 11 can be a CMOS image sensing wafer, and the image sensing wafer 11 can be set by an adhesive (not labeled, such as UV adhesive, thermosetting adhesive, or in-furnace hardening glue, etc.). On the carrier substrate 10. In addition, the carrier substrate 10 can be a circuit substrate having a plurality of conductive pads (not labeled) on the upper surface thereof. The upper surface of the image sensing wafer 11 has a plurality of conductive pads 111, and each of the image sensing wafers 11 is electrically conductive. The pad 111 can be electrically connected to the conductive pad of the carrier substrate 10 through a conductive wire W, thereby achieving electrical conduction between the image sensing wafer 11 and the carrier substrate 10.

Furthermore, as shown in FIG. 1 , the frame housing 2 is disposed on the carrier substrate 10 and surrounds the image sensing wafer 11 , and the actuator structure 3 is disposed on the frame housing 2 and located above the image sensing wafer 11 , and The actuator structure 3 includes a lens holder 30 disposed on the frame housing 2 and a movable lens assembly 31 movably disposed within the lens holder 30. For example, the frame housing 2 can be disposed on the carrier substrate 10 by an adhesive (for example, a UV adhesive, a thermosetting adhesive, or an in-furnace hardener, etc.), and the lens holder 30 can also be adhered to the lens (for example, UV). An adhesive, a thermosetting glue, or an in-furnace hardening glue or the like is provided to be disposed on the frame housing 2, and the movable lens assembly 31 may be composed of a plurality of optical lenses. In addition, it is worth mentioning that, as shown in FIG. 1, the actuator structure 3 can be a voice coil actuator, but the invention is not limited thereto.

In addition, as shown in FIG. 1 and FIG. 2, since the flexible collar 4 can be sleeved on the outer peripheral surface 3100 of the movable lens assembly 31 and abuts against the inner surrounding surface 3000 of the lens carrier 30, flexibility The collar 4 will move within the lens carrier 30 along with the movable lens assembly 31 such that the position of the movable lens assembly 31 is in an adjustable state. In other words, when the movable lens assembly 31 is placed in the lens holder 30, and the flexible collar 4 is sleeved on the outer peripheral surface 3100 of the movable lens assembly 31 and abuts against the inner surrounding surface 3000 of the lens holder 30, The flexible collar 4 is movably disposed around the inner surrounding surface 3000 of the lens carrier 30 and is movable Between the outer peripheral surfaces 3100 of the movable lens assembly 31 to constitute a built-in flexible dustproof structure. For example, the flexible collar 4 may be an O-ring made of rubber, and the inner surrounding surface 3000 of the lens carrier 30 and the outer peripheral surface 3100 of the movable lens assembly 31 may be " No screw surface or "with screw surface".

In addition, as shown in FIG. 1 , the image capturing module M of the present invention having a built-in flexible dustproof structure further includes: a filter element 5 , wherein the filter element 5 is disposed on the frame housing 2 and Located between the image sensing wafer 11 and the movable lens assembly 31. Further, the top end of the frame housing 2 has a top end opening 200, and the top end opening 200 of the frame housing 2 is closed by the filter element 5. Furthermore, as shown in FIGS. 1 and 2, when the movable lens assembly 31 is placed in the lens holder 30, the movable lens assembly 31 can be directly disposed on the upper surface 500 of the filter element 5 so as to be movable. The bottom end 3102 of the lens assembly 31 can directly contact the upper surface 500 of the filter element 5.

Furthermore, as shown in FIG. 1, the outer peripheral surface 3100 of the movable lens assembly 31 can be divided into a first surrounding surface 3100A adjacent to the top end 3101 of the movable lens assembly 31, and a bottom end adjacent to the movable lens assembly 31. The second surrounding surface 3100B of the 3102, and a third surrounding surface 3100C (eg, a slanted surrounding surface) between the first surrounding surface 3100A and the second surrounding surface 3100B, but the invention is not limited thereto. As shown in FIG. 1 and FIG. 2, when the movable lens assembly 31 is placed in the lens carrier 30, and the flexible collar 4 can be sleeved on the first surrounding surface 3100A and abuts against the third surrounding surface 3100C, The flexible collar 4 is movably disposed between the inner surrounding surface 3000 of the lens holder 30 and the outer peripheral surface 3100 of the movable lens assembly 31 to constitute a built-in flexible dustproof structure.

Furthermore, as shown in FIGS. 1 to 3, the inside of the lens holder 30 has a surrounding movable member 30M. When the movable lens assembly 31 is placed in the lens carrier 30, and the flexible collar 4 is sleeved on the outer peripheral surface 3100 of the movable lens assembly 31 and abuts against the surrounding movable member 30M of the lens carrier 30 When the surface 3000 is surrounded, the flexible collar 4 is circumferentially disposed around the inner surrounding surface 3000 of the surrounding movable member 30M of the lens holder 30 and the outer peripheral surface of the movable lens assembly 31. Between 3100 to form a built-in flexible dustproof structure. As shown in FIG. 3, after the position of the movable lens assembly 31 is adjusted or corrected, the movable lens assembly 31 and the flexible collar 4 can pass together through at least two fixing colloids H to be fixed in a surrounding shape. In the piece 30M, the movable lens assembly 31 can be movably disposed in the lens holder 30 by the surrounding movable member 30M. For example, the inner surrounding surface 3000 of the surrounding movable member 30M of the lens holder 30 and the outer peripheral surface 3100 of the movable lens assembly 31 may be "no thread surface" or "threaded surface".

Thereby, when external dust enters the actuator structure 3 from the gap between the lens carrier 30 or the inner surrounding surface 3000 of the surrounding movable member 30M and the outer peripheral surface 3100 of the movable lens assembly 31, external dust may The barrier by the flexible collar 4 disposed between the inner surrounding surface 3000 of the lens carrier 30 and the outer peripheral surface 3100 of the movable lens assembly 31 is such that the present invention achieves the purpose of dust prevention.

[Second embodiment]

Referring to FIG. 4 to FIG. 6 , a second embodiment of the present invention provides an image capturing module M having a built-in flexible dustproof structure, including: an image sensing unit 1 and a frame housing 2 And the actuator structure 3. The second embodiment of the present invention differs greatly from the first embodiment in that, in the second embodiment, the actuator structure 3 includes a lens carrier 30 disposed on the frame housing 2 and a movable movable lens. The movable lens assembly 31 in the carrier 30, and the movable lens assembly 31 has an inner peripheral surface 3000 that is partially embedded in the outer peripheral surface 3100 of the movable lens assembly 31 by the double-molding and abuts against the inner peripheral surface of the lens holder 30. Flexible collar 310.

As shown in FIG. 4 and FIG. 5, since the flexible collar 310 can be placed on the outer peripheral surface 3100 of the movable lens assembly 31 by two materials, the movable lens assembly 31 is placed in the lens holder 30. The flexible collar 310 will abut against the inner surrounding surface 3000 of the lens carrier 30, and the flexible collar 310 will move within the lens carrier 30 along with the movable lens assembly 31 to enable the movable mirror The position of the head assembly 31 is in an adjustable state. For example, the flexible collar 310 may be an O-ring made of rubber, and the inner surrounding surface 3000 of the lens carrier 30 and the outer peripheral surface 3100 of the movable lens assembly 31 may be " No screw surface or "with screw surface". As shown in FIG. 6, after the position of the movable lens assembly 31 is adjusted or corrected, the movable lens assembly 31 and the flexible collar 310 can pass together through at least two fixing colloids H to be fixed in a surrounding shape. The piece 30M is so that the movable lens unit 31 can be movably disposed in the lens holder 30 by the surrounding movable member 30M.

Thereby, when external dust enters the actuator structure 3 from the gap between the lens carrier 30 or the inner surrounding surface 3000 of the surrounding movable member 30M and the outer peripheral surface 3100 of the movable lens assembly 31, external dust may The barrier by the flexible collar 310 disposed between the inner surrounding surface 3000 of the lens carrier 30 and the outer peripheral surface 3100 of the movable lens assembly 31 is such that the present invention achieves the purpose of dust prevention.

[Third embodiment]

Referring to FIG. 7 to FIG. 9 , a third embodiment of the present invention provides an image capturing module M having a built-in flexible dustproof structure, including: an image sensing unit 1 and a frame housing 2 . , an actuator structure 3 and a flexible collar 4 . The third embodiment of the present invention is the most different from the first embodiment in that, in the third embodiment, as shown in FIG. 7 and FIG. 8, after the movable lens assembly 31 is placed in the lens carrier 30, the movable lens is movable. The assembly 31 is passed through at least two fixing colloids H to be fixed in the surrounding movable member 30M, whereby the movable lens assembly 31 is movably disposed in the lens holder 30 by the surrounding movable member 30M. As shown in FIG. 8 and FIG. 9, after the movable lens assembly 31 is fixed in the surrounding movable member 30M by at least two fixing colloids H, the flexible collar 4 can be sleeved outside the movable lens assembly 31. The surrounding surface 3100 abuts against the inner surrounding surface 3000 of the lens carrier 30 to form a built-in flexible dustproof structure.

Thereby, when external dust comes from between the lens mount 30 or the inner surrounding surface 3000 of the surrounding movable member 30M and the outer peripheral surface 3100 of the movable lens assembly 31 When the gap enters the actuator structure 3, external dust may be blocked by the flexible collar 4 disposed between the inner surrounding surface 3000 of the lens carrier 30 and the outer peripheral surface 3100 of the movable lens assembly 31. The invention is made to achieve the purpose of dust prevention.

[Possible effects of the examples]

In summary, the image capturing module M provided by the embodiment of the present invention can be disposed around the inner surrounding surface 3000 of the lens carrier 30 and the movable lens assembly 31 through the flexible collar 4 . "Between the peripheral surface 3100" or "the movable lens assembly 31 has a flexible collar that is ejected by two materials to be fixed to the outer peripheral surface 3100 of the movable lens assembly 31 and abuts against the inner surrounding surface 3000 of the lens holder 30. The 310" is designed to form a built-in flexible dustproof structure. Thereby, when external dust enters the actuator structure 3 from the gap between the lens carrier 30 or the inner surrounding surface 3000 of the surrounding movable member 30M and the outer peripheral surface 3100 of the movable lens assembly 31, external dust may The barrier is shielded by a flexible collar (4 or 310) disposed between the inner surrounding surface 3000 of the lens carrier 30 and the outer peripheral surface 3100 of the movable lens assembly 31 to achieve the purpose of dust prevention.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent technical changes made by using the present specification and the contents of the drawings are included in the protection scope of the present invention. .

M‧‧‧Image Capture Module

1‧‧‧Image sensing unit

10‧‧‧Loading substrate

11‧‧‧Image sensing wafer

111‧‧‧Electrical pads

2‧‧‧Frame housing

200‧‧‧ top opening

3‧‧‧Activity structure

30‧‧‧Lens carrier

3000‧‧‧ inner surrounding surface

30M‧‧‧around movable parts

31‧‧‧Removable lens assembly

3100‧‧‧ outer peripheral surface

3100A‧‧‧First Surrounding Surface

3100B‧‧‧Second surrounding surface

3100C‧‧‧ third surrounding surface

3101‧‧‧Top

3102‧‧‧ bottom

4‧‧‧Flexible collar

5‧‧‧ Filter elements

500‧‧‧ upper surface

W‧‧‧Flexible wire

Claims (9)

An image capturing module having a built-in flexible dustproof structure includes: an image sensing unit, the image sensing unit includes a carrier substrate, and is disposed on the carrier substrate and electrically connected to the substrate An image sensing wafer of the carrier substrate; a frame housing disposed on the carrier substrate and surrounding the image sensing wafer; an actuator structure, the actuator structure being disposed at the On the frame housing and above the image sensing wafer, wherein the actuator structure comprises a lens carrier disposed on the frame housing and a movable device disposed in the lens carrier a movable lens assembly; and a flexible collar that is sleeved on an outer peripheral surface of the movable lens assembly and abuts against an inner surrounding surface of the lens carrier, wherein The flexible collar moves within the lens carrier along with the movable lens assembly; wherein the flexible collar is circumferentially disposed on the inner surrounding surface of the lens carrier The movable mirror Between the outer peripheral surfaces of the assembly to form the built-in flexible dustproof structure; wherein the outer peripheral surface of the movable lens assembly is divided into a first end adjacent to the top end of the movable lens assembly a surrounding surface, a second surrounding surface adjacent to a bottom end of the movable lens assembly, and a third surrounding surface connecting the first surrounding surface and the second surrounding surface, and the flexibility A collar is movably sleeved over the first surrounding surface and abuts against the third surrounding surface. An image capturing module having a built-in flexible dustproof structure according to claim 1, further comprising: a filter element disposed on the frame housing and located at the frame Image sensing wafer and the movable lens assembly Between the top ends of the frame housing having a top opening, and the top opening of the frame housing is closed by the filter element. An image capturing module having a built-in flexible dustproof structure according to claim 2, wherein the inner surrounding surface of the lens carrier and the outer peripheral surface of the movable lens assembly are There is no screw surface, and the movable lens assembly is directly disposed on the upper surface of the filter element such that the bottom end of the movable lens assembly directly contacts the filter element. An image capturing module having a built-in flexible dustproof structure includes: an image sensing unit, the image sensing unit includes a carrier substrate, and is disposed on the carrier substrate and electrically connected to the substrate An image sensing wafer of the carrier substrate; a frame housing disposed on the carrier substrate and surrounding the image sensing wafer; an actuator structure, the actuator structure being disposed at the On the frame housing and above the image sensing wafer, wherein the actuator structure comprises a lens carrier disposed on the frame housing and a movable device disposed in the lens carrier a movable lens assembly, wherein the inside of the lens carrier has a surrounding movable member; and a flexible collar that is sleeved on an outer peripheral surface of the movable lens assembly And abutting against the inner surrounding surface of the surrounding movable member of the lens carrier; wherein the movable lens assembly and the flexible collar together are fixed to the surrounding by at least two fixing colloids Movable And the movable lens assembly is movably disposed in the lens holder through the surrounding movable member; wherein the flexible collar is surrounded by the lens holder The inner surrounding surface of the surrounding movable member and the outer peripheral surface of the movable lens assembly constitute the built-in flexible dustproof structure. An image capturing module having a built-in flexible dustproof structure according to claim 4, further comprising: a filter element disposed on the frame housing and located at the frame Between the image sensing wafer and the movable lens assembly, wherein the top end of the frame housing has a top opening, and the top opening of the frame housing is closed by the filter element. An image capturing module having a built-in flexible dustproof structure according to claim 5, wherein the inner surrounding surface of the surrounding movable member of the lens carrier and the movable lens assembly The outer peripheral surface is a screwless surface, and the movable lens assembly is directly disposed on an upper surface of the filter element such that a bottom end of the movable lens assembly directly contacts the filter element . An image capturing module having a built-in flexible dustproof structure according to claim 5, wherein the outer peripheral surface of the movable lens assembly is divided into a first one adjacent to a top end of the movable lens assembly a surrounding surface, a second surrounding surface adjacent to a bottom end of the movable lens assembly, and a third surrounding surface connecting the first surrounding surface and the second surrounding surface, and the flexible sleeve A ring is sleeved over the first surrounding surface and abuts against the third surrounding surface. An image capturing module having a built-in flexible dustproof structure includes: an image sensing unit, the image sensing unit includes a carrier substrate, and is disposed on the carrier substrate and electrically connected to the substrate An image sensing wafer of the carrier substrate; a frame housing disposed on the carrier substrate and surrounding the image sensing wafer; and an actuator structure, the actuator structure being disposed at The frame housing is located above the image sensing wafer, wherein the actuator structure includes a lens carrier disposed on the frame housing and a lens mount movably disposed on the frame carrier a movable lens assembly having a two-shot injection to be fixed to an outer circumference of the movable lens assembly A flexible collar that faces and abuts against an inner surrounding surface of the lens carrier, and the flexible collar moves within the lens carrier along with the movable lens assembly. An image capturing module having a built-in flexible dustproof structure according to claim 8, further comprising: a filter element disposed on the frame housing and located at the frame Between the image sensing wafer and the movable lens assembly, wherein a top end of the frame housing has a top opening, and the top opening of the frame housing is closed by the filter element, wherein The inner surrounding surface of the lens holder and the outer peripheral surface of the movable lens assembly are screwless surfaces, and the movable lens assembly is directly disposed on an upper surface of the filter element to The bottom end of the movable lens assembly is brought into direct contact with the filter element.