TWI626501B - Camera module - Google Patents

Abstract

The invention provides a camera module comprising a lens driving mechanism, a lens unit, a casing and an elastic component. The lens unit is disposed on the lens driving mechanism, and the housing surrounds the lens driving mechanism. The elastic element is coupled to the lens driving mechanism and includes a metal substrate, a first insulating layer, and a first metal line, wherein the first insulating layer is disposed between the metal substrate and the first metal line, and the first metal line and the lens The drive mechanism is electrically connected.

Description

Camera module

The invention relates to a camera module. More particularly, the present invention relates to a camera module having an elastic member, wherein the elastic member has at least one metal line.

With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the functions of photography or video recording. The use of these electronic devices is becoming more common and is moving toward a convenient and lightweight design to provide users with more choices.

The aforementioned electronic device having a camera or video function is usually provided with a driving module for driving one or more optical lens groups to move along an optical axis to achieve autofocus and/or zoom functions. Light can be imaged on a photosensitive element through the aforementioned optical lens set.

However, due to the aforementioned thin and light design, it is not easy to provide a circuit board or a circuit electrically connected to the driving module in the electronic device. Therefore, how to solve the above problem becomes an important issue.

In order to solve the above problems, the present invention provides a camera module including a lens driving mechanism, a lens unit, a housing, and an elastic element. The lens unit is disposed on the lens driving mechanism, and the housing surrounds the lens driving mechanism. The elastic element is coupled to the lens driving mechanism and includes a metal substrate, a first insulating layer, and a first metal line, wherein the first insulating layer is disposed between the metal substrate and the first metal line, and the first metal line and the lens The drive mechanism is electrically connected.

In an embodiment of the invention, the thickness of the metal substrate is greater than the sum of the thicknesses of the first insulating layer and the first metal line.

In an embodiment of the invention, the metal substrate has a thickness of 0.02 mm to 0.35 mm.

In an embodiment of the invention, the first metal line is formed on the first insulating layer by molding the interconnected object.

In an embodiment of the invention, the first metal line is formed on the first insulating layer by means of a plating film.

In an embodiment of the invention, the metal substrate and the first metal line have the same coefficient of thermal expansion.

In an embodiment of the invention, the elastic component further includes a plurality of first metal lines formed on the first insulating layer, wherein the first metal lines are electrically independent of each other.

In an embodiment of the invention, the lens driving mechanism includes a lens carrier, and the elastic component further includes a first fixing portion, a second fixing portion connecting the lens carrier, and connecting the first fixing portion and the second fixing portion. String section. Wherein, the lens unit is disposed in the lens carrier, and the plurality of wires are disposed on the string portion Sexually independent first metal line.

In an embodiment of the invention, the elastic component further includes a second insulating layer and at least one second metal line, wherein the second insulating layer is disposed between the second metal line and the metal substrate, and the metal substrate is disposed on the first insulation Between the layer and the second insulating layer.

In an embodiment of the invention, the thickness of the metal substrate is greater than the sum of the thicknesses of the second insulating layer and the second metal line.

In an embodiment of the invention, the second metal line is formed on the second insulating layer by molding the interconnected object.

In an embodiment of the invention, the second metal line is formed on the second insulating layer by means of a plating film.

In an embodiment of the invention, the metal substrate and the second metal line have the same coefficient of thermal expansion.

In an embodiment of the invention, the elastic component further includes a plurality of second metal lines formed on the second insulating layer, wherein the second metal lines are electrically independent of each other.

In an embodiment of the invention, the lens driving mechanism includes a lens carrier, and the elastic component further includes a first fixing portion, a second fixing portion connecting the lens carrier, and connecting the first fixing portion and the second fixing portion. String section. Wherein, the lens unit is disposed in the lens carrier, and the string portion is provided with a plurality of second metal lines electrically independent of each other.

The invention further provides a camera module, including a lens driver Structure, a lens unit, and a housing. The lens unit is disposed on the lens driving mechanism, and the housing surrounds the lens driving mechanism. The housing includes a metal member, an insulating layer, and a metal line, wherein the insulating layer is disposed between the metal member and the metal line, and the metal line is electrically connected to the lens driving mechanism.

In an embodiment of the invention, the thickness of the metal member is greater than the sum of the thicknesses of the insulating layer and the metal line.

In an embodiment of the invention, the thickness of the metal member is between 0.10 mm and 0.35 mm.

In an embodiment of the invention, the metal member has an inner surface and an outer surface opposite to the inner surface, and the insulating layer and the metal line extend from the inner surface to the outer surface.

In an embodiment of the invention, the camera module further includes an elastic component, and the metal circuit is electrically connected to the elastic component.

10‧‧‧ camera module

20‧‧‧Electronic devices

100‧‧‧shell

101‧‧‧ inner surface

102‧‧‧ outer surface

110‧‧‧Metal components

120‧‧‧Insulation

130‧‧‧Metal lines

200‧‧‧Lens drive mechanism

210‧‧‧Lens carrier

211‧‧‧ accommodating space

212‧‧‧ concave structure

220‧‧‧ frame

230‧‧‧First electromagnetic drive assembly

240‧‧‧Second electromagnetic drive assembly

250‧‧‧Base

260‧‧‧ coil plate

270‧‧‧ring loop

280‧‧‧ position detector

300‧‧‧Lens unit

400‧‧‧Flexible components

401‧‧‧First Fixed Department

402‧‧‧Second fixed department

403‧‧‧string department

410‧‧‧Metal substrate

420‧‧‧First insulation

430‧‧‧First metal line

440‧‧‧Second insulation

450‧‧‧Second metal line

500‧‧‧Photosensitive elements

600‧‧‧ boards

O1‧‧‧ openings

O2‧‧‧ openings

1 is a schematic view showing an electronic device according to an embodiment of the present invention.

Fig. 2 is an exploded view showing a camera module according to an embodiment of the present invention.

Fig. 3A is a schematic view showing an elastic member in an embodiment of the present invention.

Fig. 3B is a cross-sectional view taken along line A-A in Fig. 3A.

Fig. 4A is a schematic view showing an elastic member in another embodiment of the present invention.

Fig. 4B is a schematic view showing an elastic member in another embodiment of the present invention.

Figure 4C is a schematic view showing an elastic member in another embodiment of the present invention.

Fig. 5 is a schematic view showing a camera module according to another embodiment of the present invention.

Fig. 6 is a schematic view showing the camera module shown in Fig. 5 with a part of the casing removed.

Fig. 7 is a cross-sectional view taken along line B-B in Fig. 5.

The camera module of the embodiment of the present invention will be described below. However, it will be readily understood that the embodiments of the present invention are susceptible to many specific embodiments of the invention and can The specific embodiments disclosed are merely illustrative of the invention, and are not intended to limit the scope of the invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning meaning It will be understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the context or context of the present disclosure, and should not be in an idealized or overly formal manner. Interpretation, unless specifically defined herein.

Please refer to FIG. 1 . The camera module 10 of the embodiment of the present invention can be installed in an electronic device 20 for photographing or photographing. The electronic device 20 can be, for example, a smart phone or a digital camera. When photographing or photographing, the camera module 10 can receive light and image, and the image can be transmitted to a processor (not shown) disposed in the electronic device 20, and the image is post-processed by the processor.

As shown in FIG. 2 , the camera module 10 mainly includes a housing 100 , a lens driving mechanism 200 , a lens unit 300 , at least one elastic component 400 , and a sense Optical element 500, and a circuit board 600. The lens driving mechanism 200 includes a lens carrier 210, a frame 220, at least one first electromagnetic driving component 230, at least one second electromagnetic driving component 240, a base 250, a coil flat plate 260, and a plurality of loop wires 270. And a plurality of position detectors 280.

The foregoing housing 100 and the base 250 may be combined into a hollow case, and the lens driving mechanism 200 may be surrounded by the housing 100 such that the lens driving mechanism 200, the lens unit 300, and the elastic member 400 are housed in the aforementioned casing. The photosensitive element 500 and the circuit board 600 are disposed on one side of the casing, and the housing 100 and the base 250 respectively have openings O1 and O2, and the light can sequentially reach the photosensitive element 500 through the opening O1, the lens unit 300 and the opening O2, to Imaging is performed on the photosensitive element 500.

The lens holder 210 has an accommodating space 211 and a concave structure 212. The accommodating space 211 is formed in the center of the lens carrier 210, and the concave structure 212 is formed on the outer wall of the lens carrier 210 and surrounds the lens holder 210. Space 211. The lens unit 300 can be fixed on the lens carrier 210 and received in the accommodating space 211 , and the first electromagnetic driving component 230 can be disposed in the concave structure 212 .

The frame 220 has a receiving portion 221 and a plurality of grooves 222. The lens holder 210 is received in the receiving portion 221, and the second electromagnetic driving assembly 240 is fixed in the recess 222 and adjacent to the first electromagnetic driving assembly 230.

The lens carrier 210 and the lens unit 300 disposed on the lens carrier 210 can be driven along the Z axis with respect to the frame 220 by electromagnetic induction between the first electromagnetic driving component 230 and the second electromagnetic driving component 240. Move in direction. For example, in this embodiment, the first electromagnetic driving component 230 can be carried around the lens. The seat 210 houses a drive coil of the space 211, and the second electromagnetic drive assembly 240 can include at least one magnet.

When a current is passed into the driving coil (the first electromagnetic driving component 230), electromagnetic induction is generated between the driving coil and the magnet, so that the lens carrier 210 and the lens unit 300 disposed thereon can be driven relative to the frame. The 220 moves in the Z-axis direction and moves in the Z-axis direction with respect to the photosensitive element 500 to achieve the purpose of adjusting the focal length.

In some embodiments, the first electromagnetic drive assembly 230 can be a magnet and the second electromagnetic drive assembly 240 can be a drive coil.

Continuing to refer to FIG. 2 , the camera module 10 of the present embodiment includes two elastic members 400 respectively disposed on opposite sides of the lens holder 210 / the frame 220 , so that the lens holder 210 / the frame 220 are located in the foregoing Between the two elastic elements 400. The elastic member 400 can connect the lens carrier 210 to the housing 100 or the frame 220. The lens carrier 210 can be suspended in the housing portion 221 of the housing 220 by the elastic member 400, and the amplitude of movement of the lens carrier 210 in the Z-axis direction can be restricted by the elastic member 400.

As shown in FIG. 3A, the elastic member 400 may include at least one first fixing portion 401, at least one second fixing portion 402, and at least one string portion 403. The first fixing portion 401 is fixed to the housing 100 or the frame 220, the second fixing portion 402 is fixed to the lens carrier 210, and the string portion 403 is connected to the first fixing portion 401 and the second fixing portion 402.

Fig. 3B is a cross-sectional view taken along line A-A in Fig. 3A. Please one Referring to FIGS. 3A and 3B , the elastic member 400 may include a metal substrate 410 , a first insulating layer 420 , and at least one first metal line 430 . The first insulating layer 420 is disposed between the metal substrate 410 and the first metal line 430.

The thickness of the metal substrate 410 in the Z-axis direction is greater than the sum of the thicknesses of the first insulating layer 420 and the first metal line 430 in the Z-axis direction, and may be, for example, 0.02 mm to 0.35 mm. The metal substrate 410 and the first metal line 430 may have the same coefficient of thermal expansion, so that when the elastic member 400 is heated, no relative displacement occurs between the metal substrate 410 and the first metal line 430.

It should be particularly noted that, as shown in FIGS. 3A and 3B, the elastic member 400 may have a plurality of first metal lines 430, and the first metal lines 430 are separated from each other and electrically independent. The first metal lines 430 may extend from the first fixing portion 401 through the string portion 403 to the second fixing portion 402, and each of the first metal lines 430 is disposed on the first fixing portion 401 and the second fixing portion 402. The ends are used to electrically connect with other components, such as the loop wire 270.

Referring to FIG. 4A, in another embodiment, the elastic member 400 may include more than two first metal lines 430. For example, the elastic member 400 in this embodiment includes four first metal lines 430. Referring to FIG. 4B, in another embodiment, the first metal lines 430 separated from each other and electrically independent may pass through the same string portion 403. That is, each of the string portions 403 is provided with a plurality of first metal lines 430 that are separated from each other and electrically independent.

Referring to FIG. 4C , in another embodiment, the elastic component 400 further includes a second insulating layer 440 and at least one second metal line 450 . Metal substrate 410 The first insulating layer 420 is disposed between the first insulating layer 420 and the second insulating layer 440 , and the second insulating layer 440 is disposed between the metal substrate 410 and the second metal line 450 .

Similarly, the thickness of the metal substrate 410 in the Z-axis direction is greater than the sum of the thicknesses of the second insulating layer 440 and the second metal line 450 in the Z-axis direction. The metal substrate 410 and the second metal line 450 may have the same coefficient of thermal expansion, so that when the elastic member 400 is heated, no relative displacement occurs between the metal substrate 410 and the second metal line 450. When a plurality of second metal lines 450 are disposed on the second insulating layer 440, the second metal lines 450 may be separated from each other and electrically independent, and may adopt the first metal lines 430 in FIGS. 3A, 4A, and 4B. A similar configuration.

Since the first metal line 430 and the second metal line 450 which are electrically independent from each other are disposed on the elastic member 400, it is not necessary to divide the elastic member 400 even when two or more conductive actions are required to be performed by the elastic member 400. In turn, the integrity of the elastic element 400 can be maintained, facilitating the installation of the elastic element 400. In addition, since the elastic member 400 can be kept intact, the lens carrier 210 can be subjected to an average elastic force, so that the displacement of the lens unit 300 by the lens driving mechanism 200 is more precise. Moreover, the fixed area of the complete elastic element 400 is larger than that of the divided elastic element, so that the elastic element 400 can be prevented from the housing 100, the frame 220 or the lens holder 210 due to the collision of the camera module 10. Separation.

The first metal line 430 and the second metal line 450 may be respectively formed on the first insulating layer 420 and the second insulating layer 440 by means of Molded Interconnect Device (MID), for example, by laser direct molding (Laser) Direct Structuring, LDS), Micro Volumetric Process Technology (Microscopic Integrated Processing Technology, MIPTEC), Laser Induced Metallization (LIM), Laser Restructuring Print (LRP), Aerosol Jet Process, or Double Injection (Aerosol Jet Process) Two-shot molding method). In some embodiments, the first metal line 430 and the second metal line 450 may also be formed on the first insulating layer 420 and the second insulating layer 440 through a plating method.

Returning to FIG. 2, as shown, the coil plate 260 is disposed on the base 250. When current flows through the coil plate 260, electromagnetic induction will be generated between the coil plate 260 and the aforementioned second electromagnetic drive assembly 240 (or the first electromagnetic drive assembly 230), so that the lens carrier 210 and the frame 220 are opposed to the coil plate 260. Moving in the X-axis direction and/or the Y-axis direction, the lens unit 300 is moved relative to the photosensitive element 500 in the X-axis direction and/or the Y-axis direction to achieve the purpose of sway compensation.

In this embodiment, the camera module 10 includes four loop wires 270 disposed at four corners of the coil plate 260 and connected to the base 250, the coil plate 260, and the elastic member 400. When the lens holder 210 and the lens unit 300 are moved in the X-axis direction and/or the Y-axis direction, the loop wires 270 can limit the magnitude of their movement. In addition, since the loop wire 270 includes a metal material (for example, copper or its alloy, etc.), it can also be used as a conductor, for example, current can flow into the first electromagnetic drive via the base 250, the loop wire 270, and the first metal line 430 of the elastic member 400. Component 230.

The position detector 280 is disposed on the base 250 to determine the position of the lens carrier 210 and the lens unit 300 in the X-axis direction and the Y-axis direction by detecting the displacement of the second electromagnetic driving component 240.

For example, the position detector 280 can be a Hall sensor, a Magnetoresistance Effect Sensor (MR Sensor), or a Giant Magnetoresistance Effect Sensor (Giant Magnetoresistance Effect Sensor). , GMR Sensor), Tunneling Magnetoresistance Effect Sensor (TMR Sensor), or Fluxgate.

Referring to FIGS. 5-7, in another embodiment of the present invention, the housing 100 may include a metal member 110, an insulating layer 120, and at least one metal line 130, wherein the insulating layer 120 is disposed on the metal member 110 and the metal Between lines 130. One end of the metal line 130 is connected to the elastic member 400, and the metal line 130 and the insulating layer 120 are extended from the inner surface 101 of the housing 100 to the outer surface 102, so that the other end of the metal line 130 is exposed to be the other in the electronic device 20. The electronic components are electrically connected.

The thickness of the metal member 110 is greater than the sum of the thicknesses of the insulating layer 120 and the metal line 130, for example, may be between 0.10 mm and 0.35 mm, and the metal member 110 and the metal line 130 may have the same coefficient of thermal expansion.

Since the circuit board of the camera module 10 and the electronic components in the electronic device 20 are not required to be additionally provided, the volume of the camera module 10 can be effectively reduced to facilitate the installation on the miniaturized electronic device 20 . The process can be simplified and the heat dissipation efficiency of the camera module 10 can be improved.

In summary, the present invention provides a camera module in which the elastic members in the camera module can be provided with a plurality of metal lines electrically independent of each other, so that the appearance of the elastic members can be kept intact. Furthermore, the housing of the camera module can also be provided with metal The line is such that the lens drive mechanism can be connected to external electronic components.

Although the embodiments of the present invention and its advantages are disclosed above, it should be understood that those skilled in the art can make modifications, substitutions, and refinements without departing from the spirit and scope of the invention. In addition, the scope of the present invention is not limited to the processes, machines, manufacture, compositions, devices, methods, and steps in the specific embodiments described in the specification. Any one of ordinary skill in the art can. The processes, machines, fabrications, compositions, devices, methods, and procedures that are presently or in the future are understood to be used in accordance with the present invention as long as they can perform substantially the same function or achieve substantially the same results in the embodiments described herein. Accordingly, the scope of the invention includes the above-described processes, machines, manufactures, compositions, devices, methods, and steps. In addition, the scope of each of the claims constitutes an individual embodiment, and the scope of the invention also includes the combination of the scope of the application and the embodiments.

While the invention has been described above in terms of several preferred embodiments, it is not intended to limit the invention. Those skilled in the art having the ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. In addition, each patent application scope is constructed as a separate embodiment, and various combinations of patents and combinations of embodiments are within the scope of the invention.

Claims (19)

A camera module includes: a lens driving mechanism; a lens unit disposed on the lens driving mechanism; a housing surrounding the lens driving mechanism; and an elastic component connecting the lens driving mechanism, including: a metal substrate At least one first metal line; and a first insulating layer disposed between the metal substrate and the first metal line, wherein the first metal line is electrically connected to the lens driving mechanism. The camera module of claim 1, wherein the metal substrate has a thickness greater than a sum of thicknesses of the first insulating layer and the first metal line. The camera module of claim 1, wherein the metal substrate has a thickness of between 0.02 mm and 0.35 mm. The camera module of claim 1, wherein the first metal circuit is formed on the first insulating layer by molding the interconnection object. The camera module of claim 1, wherein the first metal circuit is formed on the first insulating layer by coating. The camera module of claim 1, wherein the metal substrate and the first metal line have the same coefficient of thermal expansion. The camera module of claim 1, wherein the elastic component is further A plurality of first metal lines are formed on the first insulating layer, wherein the first metal lines are electrically independent of each other. The camera module of claim 7, wherein the lens driving mechanism comprises a lens carrier, the lens unit is disposed in the lens carrier, and the elastic component further comprises: a first fixing portion; a second fixing portion connected to the lens carrier; and a string portion connecting the first fixing portion and the second fixing portion, wherein the string portion is provided with a plurality of the first metals electrically independent of each other line. The camera module of claim 1, wherein the elastic component further comprises: at least one second metal line; and a second insulating layer disposed on the second metal line and the metal Between the substrates, and the metal substrate is disposed between the first insulating layer and the second insulating layer. The camera module of claim 9, wherein the thickness of the metal substrate is greater than a sum of thicknesses of the second insulating layer and the second metal line. The camera module of claim 9, wherein the second metal circuit is formed on the second insulating layer by molding the interconnected object. The camera module of claim 9, wherein the second metal circuit is formed on the second insulating layer by coating. The camera module of claim 9, wherein the metal substrate and The second metal lines have the same coefficient of thermal expansion. The camera module of claim 9, wherein the elastic component further comprises a plurality of second metal lines formed on the second insulating layer, wherein the second metal lines are electrically independent of each other. The camera module of claim 9, wherein the lens driving mechanism comprises a lens carrier, the lens unit is disposed in the lens carrier, and the elastic component further comprises: a first fixing portion; a second fixing portion connected to the lens carrier; and a string portion connecting the first fixing portion and the second fixing portion, wherein the string portion is provided with a plurality of the second metals electrically independent from each other line. A camera module includes: a lens driving mechanism; a lens unit disposed on the lens driving mechanism; an elastic component coupled to the lens driving mechanism and including at least a first metal line; and a housing surrounding the a lens driving mechanism, the housing comprising: a metal member; a metal line; and an insulating layer disposed between the metal member and the metal line, wherein the metal line is electrically connected to the elastic member. The camera module of claim 16, wherein the metal component The thickness is greater than the sum of the thicknesses of the insulating layer and the metal line. The camera module of claim 16, wherein the metal member has a thickness of 0.10 mm to 0.35 mm. The camera module of claim 16, wherein the metal member has an inner surface and an outer surface opposite to the inner surface, and the insulating layer and the metal line extend from the inner surface to the outer surface .