JP2017198979A - Camera module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera module with a prism assembly.SOLUTION: A camera module is provided, including; a prism base having a metal member, at least one first wiring layer, and a first insulation layer disposed between the metal member and the first wiring layer; a prism driving mechanism electrically connected to the first wiring layer; a prism unit connected to the prism driving mechanism. The prism driving mechanism can drive the prism unit to rotate relative to the prism base.SELECTED DRAWING: Figure 3

Description

  This application includes US Provisional Application No. 62/320096, filed April 8, 2016, US Provisional Application No. 62/356874, filed June 30, 2016, and March 2017. This application claims priority to Taiwan Patent Application No. 106108889, filed on May 17, all of which are incorporated herein by reference.

  The present invention relates to a camera module, and more particularly to a camera module having a prism assembly.

  With the development of technology, many electronic devices (for example, cameras and smartphones) have a shooting or recording function. These electronic devices have been developed to become more universal, more convenient and thinner. Thus, more options are provided to the user.

  In general, an electronic device having a shooting or recording function includes a drive module that drives one or more optical lens units that move along an optical axis to facilitate control of autofocus and autozoom. . The light can pass through the optical lens unit and form an image on the image sensor.

  However, since electronic devices have become lighter and thinner, it is difficult to arrange circuit boards or wiring therein. Therefore, how to solve the above-mentioned problem is a serious problem.

JP-A-2005-244975

  A camera module having a prism assembly is provided.

  In order to address the problems of conventional products, an embodiment of the present invention provides a camera module including a prism base, a prism driving mechanism, a prism unit, a lens unit, and an image sensor. The prism base includes a metal member, at least one first wiring layer, and a first insulating layer disposed between the metal member and the first wiring layer. The prism driving mechanism is electrically connected to the first wiring layer. The prism unit is connected to a prism driving mechanism, and the prism driving mechanism can drive the prism unit to rotate with respect to the prism base. The image sensor can capture the light beam reflected by the prism unit and passed through the lens unit.

  In some embodiments, the thickness of the metal member exceeds the total thickness of the first insulating member and the first wiring layer.

  In some embodiments, the metal member has a thickness of 0.10 mm to 0.35 mm.

  In some embodiments, the first wiring layer is formed on the first insulating layer by using a molded circuit component.

  In some embodiments, the first wiring layer is formed on the first insulating layer by coating.

  In some embodiments, the metal member and the first wiring layer have the same coefficient of thermal expansion.

  In some embodiments, the prism base further includes at least one second wiring layer and a second insulating layer, the second insulating layer being disposed between the second wiring layer and the metal member; The metal member is disposed between the first insulating layer and the second insulating layer.

  In some embodiments, the thickness of the metal member exceeds the total thickness of the second insulating layer and the second wiring layer.

  Another embodiment of the present invention provides a camera module including a prism driving mechanism, a prism unit, an elastic member coupled to the prism driving mechanism and the prism unit, a lens unit, and an image sensor. The elastic member includes a metal substrate, at least one first metal wire electrically connected to the prism driving mechanism, and a first insulating member disposed between the metal substrate and the first metal wire. The image sensor can capture the light beam reflected by the prism unit and passed through the lens unit.

  In some embodiments, the thickness of the metal substrate exceeds the total thickness of the first insulating member and the first metal line.

  In some embodiments, the thickness of the metal substrate is 0.02 mm to 0.35 mm.

  In some embodiments, the first metal line is formed on the first insulating member by using a molded circuit component.

  In some embodiments, the first metal line is formed on the first insulating member by coating.

  In some embodiments, the metal substrate and the first metal wire have the same coefficient of thermal expansion.

  In some embodiments, the elastic member further includes a plurality of first metal wires formed on the first insulating member, the first metal wires being electrically independent.

  In some embodiments, the prism drive mechanism includes a frame and a prism holder. The elastic member is connected to the frame and the prism holder, and is connected to the first fixing part connected to the frame, the second fixing part connected to the prism holder, and the first fixing part and the second fixing part. String part. The plurality of electrically independent first metal lines are disposed on the string portion.

  In some embodiments, the elastic member further includes a second insulating member and at least one second metal line, the second insulating member being disposed between the second metal line and the metal substrate; The metal substrate is disposed between the first insulating member and the second insulating member.

  In some embodiments, the elastic member further includes a plurality of second metal wires formed on the second insulating member, the second metal wires being electrically independent.

  In some embodiments, the prism drive mechanism includes a frame and a prism holder. The elastic member is connected to the frame and the prism holder, and is connected to the first fixing part connected to the frame, the second fixing part connected to the prism holder, and the first fixing part and the second fixing part. String part. The plurality of electrically independent second metal lines are disposed on the string portion.

A more complete understanding of the invention can be obtained by considering the following detailed description of various embodiments of the invention in conjunction with the accompanying drawings.
It is the schematic of the electronic device based on embodiment of this invention. It is the schematic of the camera module based on embodiment of this invention. FIG. 3 is an exploded view of a prism assembly according to an embodiment of the present invention. It is the schematic of the elastic member based on embodiment of this invention. It is sectional drawing along line AA of FIG. 4A. FIG. 6 is a schematic view of an elastic member according to another embodiment of the present invention. It is sectional drawing of the prism base based on embodiment of this invention. 6 is a cross-sectional view of a prism base according to another embodiment of the present invention. FIG.

  The manufacture and use of camera module embodiments are discussed in detail below. However, the present embodiment may be embodied in a manner that adapts in various specific situations. The specific embodiments discussed are merely illustrative of specific aspects of making and using the embodiments and do not limit the scope of the invention.

  Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed as having a meaning consistent with that in the context of the relevant technical field. Unless expressly so defined in the specification, it should not be interpreted in an idealized or overly formal sense.

  As shown in FIG. 1, in the embodiment of the present invention, the camera module 10 is disposed in an electronic device 20 and can be used for shooting or recording. The electronic device 20 can be, for example, a smartphone or a digital camera. When shooting or recording, the camera module 10 can receive light and form an image, which can be transmitted to a processor (not shown) of the electronic device 20 for image post-processing. Can be

  As shown in FIG. 2, the camera module 10 includes a housing C, a lens assembly M1, a prism assembly M2, and an image sensor S. The housing C has an accommodation space R and an opening O communicating with the accommodation space R, and the opening is formed on the wall surface of the housing C. The lens assembly M1, the prism assembly M2, and the image sensor S are disposed in the accommodation space R. The lens assembly M1 is disposed between the prism assembly M2 and the image sensor S, and the opening O is adjacent to the prism assembly M2.

  When the light beam L passes through the opening O along the Y-axis direction and enters the accommodation space R of the camera module 10, the prism assembly M2 reflects the light beam L, and the reflected light beam L is reflected in the Z-axis direction. Can pass through the lens assembly M2 and reach the image sensor S. In particular, the image sensor S can capture the light beam reflected by the prism unit 1100 of the prism assembly M2 and passed through the lens unit 2100 of the lens assembly M1.

  As shown in FIG. 2, the lens assembly M1 mainly includes a lens unit 2100 and a lens driving mechanism, and the lens driving mechanism is used to drive the lens unit 2100 to move relative to the image sensor S. . For example, the lens driving mechanism can include a lens holder 2200, a case 2300, two spring seats 2400, at least one coil 2500, and at least one magnetic member 2600.

  The lens unit 2100 is fixed to the lens holder 2200. The two spring seats 2400 are connected to the lens holder 2200 and the case 2300, and are disposed on the opposite sides of the lens holder 2200, respectively. Accordingly, the lens holder 2200 is suspended from the hollow portion 2310 of the case 2300 so as to be movable. The coil 2500 and the magnetic member 2600 are disposed on the lens holder 2200 and the case 2300, respectively, and correspond to each other. When current flows through the coil 2500, electromagnetic induction occurs between the coil 2500 and the magnetic member 2600, and the lens holder 2200 and the lens unit 2100 disposed on the lens holder 2200 move relative to the image sensor S. Can be driven as follows.

  FIG. 3 is an exploded view of the prism assembly M2. As shown in FIG. 3, in this embodiment, the prism assembly M2 mainly includes a prism unit 1100 and a prism driving mechanism, and the prism driving mechanism includes an elastic member 1200, a prism holder, and a plurality of first electromagnetic drives. The assembly 1400 includes a frame 1500, a plurality of second electromagnetic drive assemblies 1600, a plurality of position detectors 1700, and a prism base 1800.

  As shown in FIGS. 3 and 4A, the elastic member 1200 may include at least one first fixing part 1201, at least one second fixing part 1202, and at least one string part 1203. The first fixing part 1201 is fixed to the frame 1500, and the string part 1203 is connected to the first fixing part 1201 and the second fixing part 1202. The prism unit 1100 and the prism holder 1300 are each fixed to the opposing surface of the second fixing portion 1202. That is, the prism unit 1100 and the prism holder 1300 are connected to each other via the elastic member 1200.

  4B is a cross-sectional view taken along line AA in FIG. 4A. As shown in FIGS. 4A and 4B, the elastic member 1200 can include a metal substrate 1210, a first insulating member 1220, and at least one first metal wire 1230, where the first insulating member 1220 includes: , Between the metal substrate 1210 and the first metal wire 1230.

  The thickness of the metal substrate 1210 exceeds the total thickness of the first insulating member 1220 and the first metal wire 1230. For example, the thickness of the metal substrate 1210 is 0.02 mm to 0.35 mm. The metal substrate 1210 and the first metal wire 1230 may have the same thermal expansion coefficient, and no relative displacement occurs between the metal substrate 1210 and the first metal wire 1230 when the elastic member 1200 is heated. .

  It should be noted that the elastic member 1200 can include a plurality of first metal wires 1230. These first metal wires 1230 are separated from each other and are electrically independent. These first metal wires 1230 can extend from the first fixing part 1201 to the second fixing part 1202 through the string part 1203. The end portions of the first metal wires 1230 disposed on the first fixing portion 1201 and the second fixing portion 1202 are electrically connected to other members (for example, the second electromagnetic drive assembly 1600). Used for.

  The electrically isolated first metal wires 1230 separated from each other can be extended through the same string portion 1203. In other words, the plurality of electrically independent first metal wires 1230 are disposed on each string portion 1203.

  As shown in FIG. 5, in another embodiment, the elastic member 1200 further includes a second insulating member 1240 and at least one second metal wire 1250. The metal substrate 1210 is disposed between the first insulating member 1220 and the second insulating member 1240, and the second insulating member 1240 is disposed between the metal member 1210 and the second metal wire 1250.

  Similarly, the thickness of the metal substrate 1210 exceeds the total thickness of the second insulating member 1240 and the second metal wire 1250. The metal substrate 1210 and the second metal wire 1250 may have the same thermal expansion coefficient, and no relative displacement occurs between the metal substrate 1210 and the second metal wire 1250 when the elastic member 1200 is heated. . When a plurality of second metal lines 1250 are disposed on the second insulating member 1240, the second metal lines 1250 can be separated from each other and electrically independent, and the second metal lines 1250 can be separated from each other. The arrangement of can be similar to the arrangement of the first metal wire 1230 of FIG. 4A.

  Since the electrically independent first metal wire 1230 and the electrically independent second metal wire 1250 can be disposed on the elastic member 1200, even when two or more conductive paths are required, The elastic member 1200 does not need to be divided. Accordingly, an integrated elastic member 1200 can be achieved, and assembly of the elastic member 1200 is facilitated. Further, since the integrated elastic member 1200 can be achieved, the elastic force applied to the prism holder 1300 can be made uniform, and the rotation angle driven by the prism driving mechanism becomes more accurate. The integrated elastic member 1200 has a larger fixed area than the divided elastic member. Therefore, it is possible to avoid the elastic member 1200 from being separated from the frame 1500, the prism unit 1100, or the prism holder 1300 due to the collision of the camera module 10.

  The first metal line 1230 and the second metal line 1250 may be formed by using a molded circuit device (MID), for example, laser direct structuring (LDS), micro composite processing technology (microscopic). integrated processing technology (MIPTEC), laser induced metallization (LIM), laser restructuring printing (LRP), aerosol jet process (aerosol sero-jet) m By thod), it may be respectively formed on the first insulating member 1220 and the second insulating member 1240. In some embodiments, the first metal line 1230 and the second metal line 1250 can be formed on the first insulating member 1220 and the second insulating member 1240, respectively, by coating.

  As shown in FIGS. 2 and 3, the first electromagnetic drive assembly 1400 is fixed to the prism holder 1300 and surrounds the prism holder 1300. The second electromagnetic drive assembly 1600 is fixed to the prism base 1800, passes through a hole in the frame, and corresponds to the first electromagnetic drive assembly 1400.

  The prism holder 1300 and the prism unit 1100 connected thereto are driven by electromagnetic induction between the first electromagnetic drive assembly 1400 and the second electromagnetic drive assembly 1600 and can move relative to the frame 1500. For example, in this embodiment, the first electromagnetic drive assembly 1400 can include at least one magnet, and the second electromagnetic drive assembly 1600 can be a plurality of drive coils.

  When current flows through the drive coil (second electromagnetic drive assembly 1600), electromagnetic induction occurs between the drive coil and the magnet. Accordingly, the prism holder 1300 and the prism unit 1100 are driven to rotate around the X-axis direction and / or the Y-axis direction with respect to the frame 1500 to finely adjust the position of the light beam L in the image sensor S. Can do.

  In some embodiments, the first electromagnetic drive assembly 1400 can be a drive coil and the second electromagnetic drive assembly 1600 can be a magnet.

  As shown in FIGS. 2 and 3, the prism base 1800 is fixed to the housing C, and the frame 1500 and the position detector 1700 are fixed to the prism base 1800. The position detector 1700 passes through the hole 1510 of the frame 1500 and detects the position of the first electromagnetic drive assembly 1400 to confirm the rotation angle of the prism unit 1100.

  For example, the position detector 1700 includes a Hall sensor, a magnetoresistive effect sensor (MR sensor), a giant magnetoresistive effect sensor (GMR sensor), a tunnel magnetoresistive effect sensor (tunnel sensor). It can be a TMR sensor, or a fluxgate sensor.

  As shown in FIG. 6, in this embodiment, the prism base 1800 has three layers including a metal member 1810, a first insulating layer 1820, and at least one first wiring layer 1830. The insulating layer 1820 is disposed between the metal member 1810 and the first wiring layer 1830. For example, the first wiring layer 1830 can be electrically connected to the second electromagnetic drive assembly 1600 and position detector 1700 of the prism drive mechanism to transmit signals and power.

  The thickness of the metal member 1810 exceeds the total thickness of the first insulating layer 1820 and the first wiring layer 1830. For example, the thickness of the metal member 1810 can be 0.10 mm to 0.35 mm. The metal member 1810 and the first wiring layer 1830 can have the same thermal expansion coefficient.

  As shown in FIG. 6B, in another embodiment of the present invention, the prism base 1800 includes a metal member 1810, a first insulating layer 1820, at least one first wiring layer 1830, a second insulating layer 1840, And five layers including at least one second wiring layer 1850. The first insulating layer 1820 is disposed between the metal member 1810 and the first wiring layer 1830, and the metal member 1810 is disposed between the first insulating layer 1820 and the second insulating layer 1840, and The second insulating layer 1840 is disposed between the metal member 1810 and the second wiring layer 1850.

  The thickness of the metal member 1810 exceeds the total thickness of the first insulating layer 1820 and the first wiring layer 1830, and exceeds the total thickness of the second insulating layer 1840 and the second wiring layer 1850. For example, the thickness of the metal member 1810 can be 0.10 mm to 0.35 mm. The metal member 1810, the first wiring layer 1830, and the second wiring layer 1850 can have the same thermal expansion coefficient.

  Similarly, the first wiring layer 1830 and the second wiring layer 1850 can be formed by using a molded circuit component (MID), for example, laser direct structuring (LDS), micro composite processing technology (MIPTEC), laser induced meta It can be formed on the first insulating layer 1820 and the second insulating layer 1840, respectively, by means of the Rization (LIM), Laser Reconstruction Printing (LRP), aerosol jet process, or double molding. In some embodiments, the first wiring layer 1830 and the second wiring layer 1850 can be formed on the first insulating layer 1820 and the second insulating layer 1840, respectively, by coating.

  Since the prism base 1800 includes the above-described structure, the prism assembly M2 does not need to further arrange a flexible circuit board (FPC) or a printed circuit board (PCB), or need to embed wiring in the bottom of the plastic. Thus, the manufacturing process can be simplified, the volume can be reduced, and the flatness and strength can be improved.

  In summary, a plurality of electrically independent metal wires can be placed on the elastic member of the prism assembly, providing a camera module in which an integrated elastic member is achieved. Further, since the wiring layer can be disposed on the prism-based metal member, the camera can have sufficient strength to withstand a collision.

  While certain embodiments of the present disclosure and their advantages have been described in detail, various changes may be made herein without departing from the spirit and scope of the disclosure as defined by the appended claims. It should be understood that changes, substitutions, and modifications can be made. For example, those skilled in the art will readily appreciate that many of the features, functions, processes, and materials described herein can be modified without departing from the scope of the disclosure. In addition, the scope of the present application is not intended to be limited to the particular embodiments of the processes, machines, manufacture, material compositions, means, methods, and steps described herein. As those skilled in the art will readily appreciate from the disclosure of the present disclosure, perform substantially similar functions or achieve substantially similar results to the corresponding embodiments described herein, Existing or later developed disclosures, processes, machines, manufacturing, material compositions, means, methods, or steps may be utilized in accordance with the present disclosure. Accordingly, the appended claims are intended to include the processes, machines, manufacture, compositions of matter, means, methods, or steps described above. Also, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.

  Although the invention has been described by way of examples and preferred embodiments, the invention is not limited to the disclosed embodiments. On the contrary, various modifications and similar arrangements obvious to those skilled in the art are covered. Accordingly, the appended claims are to be accorded the broadest interpretation and should include all such modifications and similar arrangements.

10 camera module 20 electronic device,
1100 Prism unit 1200 Elastic member 1201 First fixing portion 1202 Second fixing portion 1203 String portion 1210 Metal substrate 1220 First insulating member 1230 First metal wire 1240 Second insulating member 1250 Second metal wire 1300 Prism Holder 1400 First electromagnetic drive assembly 1500 Frame 1510 Hole 1600 Second electromagnetic drive assembly 1700 Position detector 1800 Prism base 1810 Metal member 1820 First insulating layer 1830 First wiring layer 1840 Second insulating layer 1850 Second Wiring layer 2100 Lens unit 2200 Lens holder 2300 Case 2310 Hollow portion 2400 Spring sheet 2500 Coil 2600 Magnetic member C Housing L Light beam M1 Lens assembly M2 Prism assembly O Opening R Housing Space S Image sensor

Claims (20)

A metal member;
At least one first wiring layer;
A prism base including the metal member and a first insulating layer disposed between the first wiring layer;
A prism driving mechanism electrically connected to the first wiring layer, and a prism unit connected to the prism driving mechanism,
The prism drive mechanism is a camera module capable of driving the prism unit to rotate with respect to the prism base.   The camera module according to claim 1, wherein a thickness of the metal member exceeds a total thickness of the first insulating layer and the first wiring layer.   The camera module according to claim 1, wherein the metal member has a thickness of 0.10 mm to 0.35 mm.   The camera module according to claim 1, wherein the first wiring layer is formed on the first insulating layer by using a molded circuit component.   The camera module according to claim 1, wherein the first wiring layer is formed on the first insulating layer by coating.   The camera module according to claim 1, wherein the metal member and the first wiring layer have the same thermal expansion coefficient. The prism base is
And further comprising at least one second wiring layer and a second insulating layer,
The second insulating layer is disposed between the second wiring layer and the metal member, and the metal member is disposed between the first insulating layer and the second insulating layer. The camera module according to 1.   The camera module according to claim 7, wherein a thickness of the metal member exceeds a total thickness of the second insulating layer and the second wiring layer. Prism drive mechanism,
A prism unit, and an elastic member coupled to the prism drive mechanism and the prism unit,
The elastic member is
Metal substrate,
At least one first metal wire electrically connected to the prism drive mechanism;
A camera module including the metal substrate and a first insulating member disposed between the first metal wire.   The camera module according to claim 9, wherein a thickness of the metal substrate exceeds a total thickness of the first insulating member and the first metal wire.   The camera module according to claim 9, wherein a thickness of the metal substrate is 0.02 mm to 0.35 mm.   The camera module according to claim 9, wherein the first metal wire is formed on the first insulating member by using a molded circuit component.   The camera module according to claim 9, wherein the first metal line is formed on the first insulating member by coating.   The camera module according to claim 9, wherein the metal substrate and the first metal wire have the same thermal expansion coefficient.   The elastic member further includes a plurality of the first metal wires formed on the first insulating member, and the plurality of the first metal wires are electrically independent. The camera module described. The prism driving mechanism includes a frame and a prism holder, and the elastic member is coupled to the frame and the prism holder,
A first fixing part connected to the frame;
A plurality of electrically independent first metal lines including a second fixed portion connected to the prism holder; and a string portion connected to the first fixed portion and the second fixed portion. The camera module according to claim 9, wherein the camera module is disposed on the string portion. The elastic member is
At least one second metal wire, and a second insulating member;
The second insulating layer is
The camera module according to claim 9, wherein the camera module is disposed between the second metal line and the metal substrate, and the metal substrate is disposed between the first insulating member and the second insulating member.   The camera module according to claim 17, wherein a thickness of the metal substrate exceeds a total thickness of the second insulating member and the second metal wire.   The elastic member further includes a plurality of the second metal wires formed on the second insulating member, and the plurality of the second metal wires are electrically independent. The camera module described. The prism driving mechanism includes a frame and a prism holder, and the elastic member is coupled to the frame and the prism holder,
A first fixing part connected to the frame;
A second fixing part connected to the prism holder; and a string part connected to the first fixing part and the second fixing part;
The camera module according to claim 17, wherein the plurality of electrically independent second metal lines are disposed on the string portion.

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