PATENT DOCUMENT

Publication Number: US-12063742-B1
Application Number: US-202217715852-A
Country: US
Kind Code: B1

Title: Printed circuit board with embedded coil and position sensor

Abstract:
A camera may include a printed circuit board (PCB) that may include at least one coil and at least one position sensor. The coil may be embedded at least partially inside the PCB at a first side of the PCB, whilst the position sensor may be attached to the PCB at a second side opposite the first side. The PCB may include an aperture through the PCB at a location corresponding to the position sensor to enhance sensing of the position sensor. The PCB may further include at least one recess inside which the position sensor may be attached to the PCB.

Claims:
What is claimed is: 
     
       1. A system, comprising:
 a lens group including one or more lenses; 
 an image sensor configured to generate image signals based on light passing through the lens group; and 
 a printed circuit board (PCB) that comprises:
 at least one coil of an actuator configured to move at least one of the lens group or the image sensor, wherein the at least one coil is embedded at least partially inside the PCB at a first side of the PCB, wherein the first side of the PCB is an object side of the PCB; and 
 at least one sensor that is attached to the PCB at a second side of the PCB opposite the first side of the PCB and adjacent an aperture extending through the PCB, wherein the sensor is configured to provide information indicating a relative distance between the image sensor and the lens group, wherein the second side of the PCB is an image side of the PCB. 
 
 
     
     
       2. The system of  claim 1 , wherein the image sensor is also attached to the PCB. 
     
     
       3. The system of  claim 1 , wherein the at least one sensor is a surface mount device and is configured such that, when attached to the second side of the PCB, the at least one sensor provides a larger sensing output compared to when the sensor is attached to the first side of the PCB. 
     
     
       4. The system of  claim 1 , wherein the PCB includes at least one recess at the second side of the PCB, and wherein the at least one sensor is attached to the PCB inside the recess. 
     
     
       5. The system of  claim 1 , further comprising at least another coil of the actuator that is positioned outside the PCB and coupled with the at least one coil embedded at least partially inside the PCB. 
     
     
       6. The system of  claim 1 , wherein the PCB further comprises at least one driver for the at least one coil of the actuator, and wherein the at least one driver is attached to the PCB at the second side of the PCB. 
     
     
       7. The system of  claim 1 , wherein the PCB includes an organic portion and a ceramic portion, and wherein the ceramic portion is attached to the organic portion of the PCB at the second side of the PCB. 
     
     
       8. The system of  claim 1 , wherein the at least one sensor is a magnetoresistive (MR) sensor. 
     
     
       9. The system of  claim 1 , wherein the actuator is a voice coil motor (VCM) actuator. 
     
     
       10. A device, comprising:
 a lens group including one or more lenses; 
 an image sensor configured to generate image signals based on light passing through the lens group; 
 a processor configured to process the image signals from the image sensor to generate an image; and 
 a printed circuit board (PCB) that comprises:
 at least one coil of an actuator configured to move at least one of the lens group or the image sensor, wherein the at least one coil is embedded at least partially inside the PCB at a first side of the PCB, wherein the first side of the PCB is an object side of the PCB; and 
 at least one sensor that is attached to the PCB at a second side of the PCB opposite the first side of the PCB and adjacent an aperture extending through the PCB, wherein the sensor is configured to provide information indicating a relative distance between the image sensor and the lens group, wherein the second side of the PCB is an image side of the PCB. 
 
 
     
     
       11. The device of  claim 10 , wherein the image sensor is also attached to the PCB. 
     
     
       12. The device of  claim 10 , wherein the at least one sensor is a surface mount device and is configured such that, when attached to the second side of the PCB, the at least one sensor provides a larger sensing output compared to when the at least one sensor is attached to the first side of the PCB. 
     
     
       13. The device of  claim 10 , wherein the PCB includes at least one recess at the second side of the PCB, and wherein the at least one sensor is attached to the PCB inside the recess. 
     
     
       14. The device of  claim 10 , further comprising at least another coil of the actuator that is positioned outside the PCB and coupled with the at least one coil embedded at least partially inside the PCB. 
     
     
       15. The device of  claim 10 , wherein a portion of the PCB where the at least one coil is embedded is a rigid portion, and wherein other portions of the PCB include a rigid portion or a flexible portion. 
     
     
       16. The device of  claim 10 , wherein the PCB includes an organic portion and a ceramic portion, and wherein the ceramic portion is attached to the organic portion of the PCB at the second side of the PCB. 
     
     
       17. The device of  claim 10 , wherein the at least one sensor is a magnetoresistive (MR) sensor. 
     
     
       18. A method, comprising:
 obtaining a printed circuit board (PCB) that includes (1) at least one coil embedded at least partially inside the PCB at a first side of the PCB and (2) at least one aperture extending through the PCB at a location corresponding to at least one position sensor, wherein the first side of the PCB is an object side of the PCB; and 
 attaching the at least one position sensor to the PCB at a second side opposite the first side of the PCB, wherein the position sensor is positioned proximate the aperture extending through the PCB, wherein the second side of the PCB is an image side of the PCB.

Description:
This application claims benefit of priority to U.S. Provisional Application Ser. No. 63/172,608, entitled “Printed Circuit Board with Embedded Coil and Position Sensor,” filed Apr. 8, 2021, and which is hereby incorporated herein by reference in its entirety. 
    
    
     BACKGROUND 
     Technical Field 
     This disclosure relates generally to a camera and more specifically to a camera that may include a printed circuit board (PCB) where one or more coils may be at least partially embedded and/or one or more position sensors may be attached. 
     Description of the Related Art 
     Mobile multipurpose devices such as smartphones, tablet, and/or pad devices are considered as a necessity nowadays. They integrate various functionalities in one small package thus providing tremendous convenience for use. Most, if not all, of today&#39;s mobile multipurpose devices include at least one camera. Some cameras may incorporate an autofocus (AF) mechanism whereby the object focal distance can be adjusted to focus an object plane in front of a camera at an image plane to be captured by the image sensor. In some cameras, the AF mechanisms can be implemented by moving the optical lenses as a single rigid body along the optical axis of the camera. Furthermore, some cameras may incorporate an optical image stabilization (OIS) mechanism that can sense and react to external excitation/disturbance by adjusting position of the image sensor relative to the lenses in an attempt to compensate for unwanted motion of the lenses. The advent of the mobile multipurpose devices has resulted in a high requirement for cameras, in terms of image quality but also size of the cameras. Therefore, it is desirable to have techniques capable of reducing the footprint of cameras in mobile multipurpose devices. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS.  1 A- 1 D  show an example camera including a printed circuit board (PCB), according to some embodiments. 
         FIGS.  2 A- 2 B  show cross-sectional views of example PCB designs to illustrate size reduction, according to some embodiments. 
         FIG.  3 A  shows the layer stack-up of an example PCB, according to some embodiments. 
         FIG.  3 B  is a table showing an example structure of a PCB at two areas with and without a recess, according to some embodiments. 
         FIG.  4    is a high-level diagram flowchart showing methods and techniques for forming an example PCB, according to some embodiments. 
         FIG.  5    illustrates a schematic representation of an example device that may include a camera including a PCB, according to some embodiments. 
         FIG.  6    illustrates a schematic block diagram of an example computer system that may include a camera having a PCB, according to some embodiments. 
     
    
    
     This specification includes references to “one embodiment” or “an embodiment.” The appearances of the phrases “in one embodiment” or “in an embodiment” do not necessarily refer to the same embodiment. Particular features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure. 
     “Comprising.” This term is open-ended. As used in the appended claims, this term does not foreclose additional structure or steps. Consider a claim that recites: “An apparatus comprising one or more processor units . . . .” Such a claim does not foreclose the apparatus from including additional components (e.g., a network interface unit, graphics circuitry, etc.). 
     “Configured To.” Various units, circuits, or other components may be described or claimed as “configured to” perform a task or tasks. In such contexts, “configured to” is used to connote structure by indicating that the units/circuits/components include structure (e.g., circuitry) that performs those task or tasks during operation. As such, the unit/circuit/component can be said to be configured to perform the task even when the specified unit/circuit/component is not currently operational (e.g., is not on). The units/circuits/components used with the “configured to” language include hardware—for example, circuits, memory storing program instructions executable to implement the operation, etc. Reciting that a unit/circuit/component is “configured to” perform one or more tasks is expressly intended not to invoke 35 U.S.C. § 112(f) for that unit/circuit/component. Additionally, “configured to” can include generic structure (e.g., generic circuitry) that is manipulated by software and/or firmware (e.g., an FPGA or a general-purpose processor executing software) to operate in manner that is capable of performing the task(s) at issue. “Configure to” may also include adapting a manufacturing process (e.g., a semiconductor fabrication facility) to fabricate devices (e.g., integrated circuits) that are adapted to implement or perform one or more tasks. 
     “First,” “Second,” etc. As used herein, these terms are used as labels for nouns that they precede, and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). For example, a buffer circuit may be described herein as performing write operations for “first” and “second” values. The terms “first” and “second” do not necessarily imply that the first value must be written before the second value. 
     “Based On.” As used herein, this term is used to describe one or more factors that affect a determination. This term does not foreclose additional factors that may affect a determination. That is, a determination may be solely based on those factors or based, at least in part, on those factors. Consider the phrase “determine A based on B.” While in this case, B is a factor that affects the determination of A, such a phrase does not foreclose the determination of A from also being based on C. In other instances, A may be determined based solely on B. 
     It will also be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first contact could be termed a second contact, and, similarly, a second contact could be termed a first contact, without departing from the intended scope. The first contact and the second contact are both contacts, but they are not the same contact. 
     The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description and the appended claims, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “includes,” “including,” “comprises,” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     As used herein, the term “if” may be construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” may be construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context. 
     DETAILED DESCRIPTION 
     Various embodiments described herein relate to a camera that may include a printed circuit board (PCB) where one or more coils may be at least partially embedded and/or one or more position sensors may be attached. In some embodiments, the PCB may be preferably rigid in the areas where the coils are embedded, but that the overall PCB may be a rigid PCB or a rigid-flex PCB (e.g., where the coils are embedded into a rigid portion of the rigid-flex PCB). In some embodiments, the camera may include an image sensor and a lens group having one or more lenses. The lens group may receive light from an external environment and pass the light to the image sensor. The image sensor may receive the light passing through the lens group and accordingly generate image signals, e.g., electrical signals. The image signals may be further processed by a processor to render an image for display. The PCB with associated coils and position sensors may be used in a variety of different camera application. For instance, in an instance where the camera has a moveable image sensor, the camera may have an assembly that is configured to hold the image sensor and one or more coils. The PCB portion of the assembly may utilize the coil and/or position sensor mounting techniques described herein. In some embodiments, the cameras may be integrated as part of a mobile multipurpose device such as a smartphone, a tablet, a pad device, and the like. 
     In some embodiments, the camera may include an actuator, e.g., a voice coil motor (VCM) actuator, that may move the lens group and/or the image sensor relative to each other. For instance, the actuator may control the lens group to move relative to the image sensor from one position to another, e.g., in a direction approximately parallel to the optical axis (or Z-axis) of the lens group of the camera to implement an autofocus (AF) function. In some embodiments, the actuator may also move the image sensor relative to the lens group to different positions in one or more directions, e.g., along X- and/or Y-axis, that are approximately orthogonal to the optical axis (or Z-axis) of the lens group to implement an optical image stabilization (OIS) function. In some embodiments, instead of moving both components, the actuator may move either the lens group or the image sensor alone, e.g., along (1) Z-axis and (2) X- and/or Y-axis, to implement both the AF and OIS functions. 
     In some embodiments, the camera may include an assembly for mounting various components of the camera. For instance, the assembly may include a PCB, at least one coil of the actuator, and at least one position sensor. In some embodiments, the coil of the actuator may be embedded or buried at least partially inside the PCB at a first side of the PCB, and the position sensor may be mounted or attached to the PCB at a second side opposite the first side of the PCB. The coil may conduct current that may interact with the magnetic field of at least one corresponding magnet to generate motive force (e.g., Lorentz force) for moving the lens group and/or the image sensor. The position sensor may be used for measurement to provide information indicating a relative distance between the lens group and the image sensor. This relative distance may be further used as a parameter in control of the movement and/or position of the lens group and/or the image sensor by the actuator. Here, the term “position sensor” may broadly refer to any type of sensors suitable for measuring the distance, position, direction, and/or speed of one object (e.g., the coil) relative to another object (e.g., the magnet). For instance, the positions sensor may include a magnetoresistive (MR) sensor (e.g., a giant magnetoresistive or GMR sensor, a tunneling magnetoresistive or TMR sensor, an anisotropic magnetoresistive or AMR sensor, etc.), a Hall effect-based magnetic sensor, an eddy current-based sensor, a capacitive position sensor, an inductive position sensor, a potentiometric position sensor (resistance-based), a fiber-optic position sensor, an optical position sensor, an ultrasonic position sensor, and the like. 
     In some embodiments, the PCB may include at least one aperture or opening through the PCB in order to enhance the sensing of the position sensor. For instance, in some embodiments, the magnet of the camera may be placed proximate the first side of the PCB. Because the position sensor is attached to the (opposite) second side of the PCB, an aperture may be created through the PCB proximate the position sensor (e.g., the aperture may be positioned approximately “in-between” the magnet and the position sensor) to reduce the magnetoresistance (i.e., the “friction” of the magnetic field) for the position sensor. In addition, in some embodiments, the position sensor may be designed such that, when attached to the second side of the PCB, it may provide a larger sensing output than attached in the opposite direction. Typically, a position sensor has better sensing performance when the magnet is at the opposite side compared to the leads of the package of the position sensor. In other words, for instance, when the position sensor is a surface mount device mounted to a underneath side of a PCB, its sensing output is larger when the magnet is underneath the PCB (e.g., at the opposite side with respect to the surface-mounting leads) than the scenario when the magnet is above the PCB (e.g., at the same side as the leads). However, in this disclosure, due to the “custom” design, the position sensor may have a stronger sensing output when the magnet is positioned at the same side (e.g., above the PCB or proximate the top side of the PCB) as the leads relative to the position sensor, given the aperture through the PCB. 
     In some embodiments, the PCB may include at least a recess such that the height or thickness of the PCB at the location of the recess may become less than other parts of the PCB. The position sensor may be attached to the PCB inside the recess so as to reduce the height or thickness of the overall assembly (e.g., a sum of the heights or thicknesses of the PCB at the recess and the position sensor attached to the PCB). In some embodiments, the PCB may further include at least one driver (e.g., an integrated-circuit component) that may be used to control and regulate the current of the coil of the actuator. In some embodiments, the driver may be attached to the PCB at the same side, e.g., the second side, of the PCB as the position sensor. In some embodiments, the PCB may include an organic portion and a ceramic portion. The above-described embedded coil, position sensor, and/or driver may be attached to the organic portion of the PCB. In some embodiments, the ceramic portion may be attached to the organic portion at the same side, e.g., the second side, of the PCB as the position sensors. In some embodiments, the PCB may include one or more additional recesses such that the driver and/or the ceramic portion may be attached to the PCB also inside the additional recesses, in order to reduce the overall height or thickness of the PCB. In some embodiments, the camera may further include at least an additional coil that may be electrically coupled with the embedded coil but positioned outside the PCB, e.g., at the first side of the PCB. In some embodiments, the additional coil may have a higher coil density than the embedded coil. For instance, the additional coil may be wound in a way to reduce airgap between windings of the additional coil and/or provide a higher number of turns within a same volume, and/or may use a different conductor or power supply to obtain a higher current. In some embodiments, the image sensor and the additional coil may be the only components mounted at the first second side of the PCB. In other words, all the other components may be either embedded inside the PCB or attached to the second side of the PCB 
     As described above, in some embodiments, the PCB may be preferably rigid in the areas where the one or more coils are embedded, e.g., to avoid impacting performance of the embedded coils. However, the overall PCB may be a rigid PCB (such as a hardboard) or a rigid-flex PCB (such as a combination of one or more hardboards and one or more flexible circuits connected to the hardboards). In the case when the overall PCB is a rigid-flex PCB, the coils may be embedded at least partially into a rigid portion of the rigid-flex PCB. 
     The PCB arrangement described in this disclosure can provide at least several benefits. One, it can reduce the height or thickness of the overall assembly, which may further lead to the reduction of the overall camera footprint. Consider an example where the image sensor is attached to the PCB and positioned upon the X-Y plane to receive light passing through the lens group along the optical axis (or Z-axis) of the lens group. Embedding the coil at least partially inside the PCB, e.g., at a top side of the PCB, may reduce the height or thickness of the overall assembly along Z-axis (e.g., the Z-height) compared to traditional designs where the coil is mounted outside on top of the PCB. Further, in such an example camera, typically the magnet is positioned above the PCB, and the position sensor is attached at the same side (e.g., the top side) of the PCB as the coil. However, there may be readily-available space between the underneath side of the PCB and casing of the camera that would otherwise be unoccupied in traditional designs, according to some embodiments. Therefore, moving the position sensor from the top side to the underneath side of the PCB, using the readily-available space, can further reduce the Z-height of the PCB. Note that this is only an example to illustrate the size reduction, e.g., along Z-axis. Depending on the orientation of the PCB installation inside the camera, the disclosed design may also reduce the size of the PCB and/or footprint of the camera in the other directions (e.g., size reduction along the X- and/or Y-axis when the PCB is arranged vertically). Two, the disclosed design can simplify the manufacturing process of the PCB. For instance, traditionally, the position sensor, driver, and/or the ceramic portion of the PCB are positioned at different sides of the PCB. Therefore, it requires multiple reflow processes to mount or attach (e.g., using soldering) these components to the PCB (e.g., to an organic portion of the PCB). However, according to the disclosed design, these components may now move to the same side of the PCB, and therefore they can be attached to the PCB in one single reflow. Every time the PCB goes through a reflow process, it has to experience some thermal cycles and associated differential thermal expansions. Therefore, the simplification of the manufacturing process can also improve the reliability of the PCB as well as reduce warpages. Three, the disclosed PCB arrangement can also improve the sensing performance of the position sensor. Traditionally, when the position sensor and coil are positioned at the same side of the PCB, the position sensor may be subject to saturation. This can happen when the magnet is too close to the coil (and thus the position sensor) for increasing the magnetic field and thus the motive force, e.g., in order to improve dynamic response and/or move a larger and heavier movable component. In the disclosed design, the position sensor may be placed at the opposite side of PCB compared to the coil and magnet, and therefore the saturation may be eliminated or at least mitigated. The sensing performance of the position sensor may be still guaranteed by creating an aperture through the PCB corresponding to the position sensor. Therefore, the camera can retain or even increase the motive force without sacrificing performance of the position sensor. 
       FIGS.  1 A- 1 D  show an example camera including the disclosed PCB arrangement, according to some embodiments. For purposes of illustration, only relevant components are illustrated in these figures.  FIG.  1 A  shows a (partial) cross-sectional view of the example camera. In this example, camera  100  may include lens group  105  and image sensor  110 . Lens group  105  may include one or more lenses (not shown), which may receive light from an external environment and focus the light on to an image plane of image sensor  110 . Image sensor  110  may generate image signals based on the light passing through lens group  105 . The image signals may be further processed by a processor to render an image for display. In some embodiments, camera  100  may include infrared (IR) filter  195  that may block at least some IR light from reaching image sensor  110 . For purposes of illustration, in this example, the optical axis of lens group  105  is designated as the Z-axis, and the image sensor  110  is shown to sit upon the X-Y plane orthogonal to the optical axis (or Z-axis) of lens group  105 . In some embodiments, camera  100  may include printed circuit board (PCB)  120  that may be used for mounting various components of camera  100 . In this example, for purposes of illustration, PCB  120  may include organic portion  125  and ceramic portion  130 , according to some embodiments. 
     As described above, in some embodiments, camera  100  may include at least one actuator that may be used to move lens group  105  and/or image sensor  110  to implement AF and/or OIS functions. For instance, as shown in  FIG.  1 A , camera  100  may include AF coil  160  of an actuator that may be fixedly coupled with lens holder  150 . Lens holder  150  may contain the one or more lenses of lens group  105 . For instance, lens holder  150  may include interior threads, and the one or more lenses of lens group  105  may be screwed in to the threads to become attached to lens holder  150 . Camera  100  may include at least one magnet  145  arranged proximate AF coil  160 , as shown in  FIG.  1 A . Magnet  145  may be attached with static platform  155  that further be fixedly coupled with casing  175  of camera  100 . In some embodiments, camera  100  may include a flexure connection (not shown), e.g., a horizontal connection between lens holder  150  and static platform  155 , which may provide necessary support for lens holder  150  but also allow for freedom of movement for lens holder  150 , e.g., in a directional approximately parallel to the optical axis (or Z-axis) of lens group  105 . Therefore, when AF coil  160  conducts current, the current may interact with the magnetic field of magnet  145  to generate motive force (e.g., Lorentz force) upon AF coil  160  to move AF coil  160  (together with lens holder  150  and lens group  105 ) relative to image sensor  110  approximately along Z-axis to implement the AF function. 
     In addition, in some embodiments, camera  100  may also use the same or a different actuator to move image sensor  110  relative to lens group  105 . For instance, as shown in  FIG.  1 A , in some embodiments, image sensor  110  may be fixedly coupled with PCB  120 , e.g., using a chip socket or being soldered directly on to connector(s) on ceramic portion  130  of PCB  120 . Ceramic portion  130  of PCB  120  may be further coupled with static platform  170  through a flexure connection  165 . Flexure connection  165  may allow for movement of PCB  120  (and thus image sensor  110 ) relative to lens group  105 , e.g., in one or more directions (e.g., along X- and/or Y-axis) approximately orthogonal to the optical axis (or Z-axis) of lens group  105 . Camera  100  may include at least one OIS coil  135  that may be at least partially embedded inside PCB  120 . For instance, coil  135  may be at least partially embedded within one or more layers at a first side of organic portion  125  of PCB  125  that faces lens group  105 . As shown in  FIG.  1 A , magnet  145  may be arranged proximate coil  135 , such that the magnetic field of magnet  145  and the current of coil  135  may interact with each other to generate motive force (e.g., Lorentz force) to move image sensor  110  relative to lens group  105 , e.g., approximately along X- and/or Y-axis to implement the OIS function. 
     In some embodiments, camera  100  may include position sensor  140  that may be used to provide information indicating a relative distance between lens group  105  and image sensor  110 , which may be used in control of the movement and/or position of image sensor  110  relative to lens group  105 . In some embodiments, position sensor  140  may be attached to a second side of PCB  120  opposite the first side and facing away from lens group  105 , e.g., within the space between PCB  120  and casing  175  of camera  100  as shown in  FIG.  1 A . As described above, the underneath space between PCB  120  and casing  175  of camera  100  may be readily available, and thus embedding coil  135  inside PCB  120  and attaching position sensor  140  to the opposite side of PCB  120  can reduce the height or thickness (e.g., the Z-height in this example) of the overall assembly. As shown in  FIG.  1 A , because position sensor  140  is now moved to the underneath side of PCB  120 , PCB  120  may include aperture  142  through PCB  120  corresponding to position sensor  140 . For instance, aperture  142  may be located approximately above position sensor  140  to create an airgap in-between position sensor  140  and magnet  145 . Aperture  142  can reduce the magnetoresistance of the magnetic field of magnet  145  for position sensor  140  and thus enhance the sensing of position sensor  140 . 
     In addition, in some embodiments, position sensor  140  may be designed such that, when attached to the underneath side of PCB  120  as shown in  FIG.  1 A , position sensor  140  may provide a larger sensing output than attached in the opposite direction. In other words, position  140  sensor may have a larger sensing output when magnet  145  is positioned above the top side of PCB  120  (e.g., at the same side as the leads of position sensor  140 ) than the scenario when magnet  145  is underneath PCB  120 . For purposes of illustration,  FIG.  1 A  shows the upward arrows to indicate this “sensing direction” for position sensor  140 . 
     As shown in  FIG.  1 A , in some embodiments, PCB  120  may include both organic portion  120  and ceramic portion  130 . In that case, ceramic portion  130  may be attached to organic portion  125  of PCB  120  at the same side, e.g., the underneath side, as position sensor  140 , according to some embodiments. In addition, in some embodiments, camera  100  may include driver  180  (e.g., an IC component) for coil  135  that may be attached to PCB  120  at the same side, e.g., the underneath side, as position sensor  140 . As described above, the PCB arrangement described herein of having components such as position sensor  140 , ceramic portion  130  of PCB  120 , and/or driver  180  at the same side of PCB  120  may simplify the manufacturing process, which may further improve the reliability and reduce warpage. Further, as described above, the attachment of position sensor  140  at the opposite side as coil  135  can improve the sensing performance, e.g., by eliminating or at least mitigating saturation of position sensor  140 . In some embodiments, PCB  120  may include one or more recesses such that position sensor  140 , driver  180 , and/or ceramic portion  130  may be attached to organic portion  125  inside the recesses to further reduce the overall height or thickness of the PCB, as described in  FIG.  2   . 
       FIG.  1 B  shows a top view of the PCB, according to some embodiments. As shown in  FIG.  1 B , PCB  120  may include at least one coil  135  and at least one position sensor  140 . In  FIG.  1 B , position sensor  140  is shown with dashed lines because it is attached to the underneath side of PCB  120  and thus not directly visible in the top view. Further, PCB  120  may include aperture  142  through PCB  120  corresponding to position sensor  140 . As shown in  FIG.  1 B , in this example, aperture  142  may be created at a location proximate position sensor  140 , e.g., approximately above position sensor  140 . In addition, in some embodiments, at least one driver  180  for coil  135  may be attached to the same side (e.g., the underneath side) of PCB  120  as position sensor  140 —thus driver  180  is also shown with dashed lines in  FIG.  1 B . Note that moving driver  180  to the underneath side of PCB  120  (e.g., opposite to coil  135 ) may also provide additional possibility to reduce the size of the overall assembly. For instance, as shown in  FIG.  1 B , this can provide additional space, e.g., along the west and/or east sides on the X-Y plane, at the top side of PCB  120 . 
       FIG.  1 C  shows a cross-sectional zoom-in view of the PCB, according to some embodiments. In this example, the figure corresponds to a cross-sectional view, from left to right, of zone  190  as indicated in  FIG.  1 B . As shown in  FIG.  1 C , PCB  120  may include at least one coil  135  and at least one position sensor  140 , according to some embodiments. In some embodiments, coil  135  may be embedded at least partially inside PCB  120 , e.g., within the three layers of organic portion  125  of PCB  120  at the first side, as shown in  FIG.  1 C . Position sensor  140  may be attached to PCB  120  at the second side opposite to the first side of PCB  120 . In addition, PCB  120  may include aperture  142 , e.g., approximately above position sensor  140  as shown in  FIG.  1 C . In some embodiments, position sensor  140  may be designed to provide a larger sensing output when attached to the second side of PCB  120  (as shown in  FIG.  1 C ) than attached in an opposite direction, as indicated by the upward “sensing direction” in  FIG.  1 C . In some embodiments, at least one driver  180  for coil  135  may be attached to PCB  120  at the same side, e.g., the second side, as position sensor  140 . In addition, in some embodiments, camera  100  may include at least one additional coil  185  that may be positioned outside PCB  120 , e.g., at the first side of PCB  120 , and may be electrically connected with embedded coil  135 . In some embodiments, additional coil  185  may provide a higher density than embedded coil  135 . For instance, additional coil  185  may have a higher winding density, a larger number of turns, and/or a larger current. 
     As described above, in some embodiments, the PCB may be preferably rigid in the areas where the coils are embedded—e.g., organic portion  125  of PCB  120  inside which coils  135  is embedded may be preferably a rigid portion. However, the overall PCB may be a rigid PCB or a rigid-flex PCB.  FIG.  1 D  shows an example rigid-flex PCB. In  FIG.  1 D , rigid-flex PCB  190  may include rigid portion  191  and flexible portion  192 . For instance, rigid portion  191  may correspond to a hardboard, whilst flexible portion  192  may be a flexible circuit that may include traces connected with traces inside rigid portion  191 . One or more coils  136  may be embedded at least partially inside rigid-flex PCB  190 , e.g., into a first side of rigid portion  191 . Further, one or more position sensors  141  may be attached to rigid-flex PCB  190  at a second side opposite to embedded coils  136 . In some embodiments, rigid-flex PCB  190  may include one or more apertures  143  through rigid-flex PCB  190  at locations corresponding to position sensors  141  to enhance sensing of position sensors  141 . In addition, in some embodiments, one or more additional coils  186  positioned outside rigid-flex PCB  190  may be coupled with embedded coils  136 . 
     Note that  FIGS.  1 A- 1 D  are provided only as an example for purposes of illustration. In some embodiments, image sensor  110  may be mounted at another side of PCB  120  (e.g., at the top side of PCB  120  in  FIG.  1 A ) that faces lens group  102 . Further, the PCB may be used to hold a variety of different camera components and be arranged in different orientations. For instance, in some embodiments, a PCB may not necessarily be used to hold the image sensor, but rather be arranged vertically in parallel to the Z-axis and used to transfer power and/or signals to one or more coils attached with the lens holder (e.g., AF coil  160  in  FIG.  1 A ). Moreover, the PCB may be made of one single material (e.g., organic material, ceramic, or any other appropriate PCB material), or a combination of different materials (e.g., including an organic portion and a ceramic portion). In addition, as described above, in some embodiments, camera  100  may move image sensor  110  in one or more additional directions, e.g., approximately along the optical axis (or Z-axis) of lens group  105  to implement the AF function. Note that a camera may include one or more PCB assemblies as described herein. For instance, in some embodiments, a camera may include one PCB as described herein to hold the image sensor (e.g., on X-Y plane), and another PCB as described here (e.g., in parallel to Z-axis) to transfer power and/or signals to other camera components (e.g., the AF coil). 
     In some embodiments, the embedding of coil  135  at least partially inside PCB  120  may be implemented using various appropriate approaches. For instance, in some embodiments, embedded coil  135  may be created using an electroplating process, such as a 3-D copper plating. For example, a conductive material such as copper may be deposited at one layer of PCB  120 . Then, PCB  120  may be etched according to a given winding pattern of coil  135  to form one layer of windings for embedded coil  135 . Next, an insulation layer may be applied on top of and/or underneath this layer, and the above processes may be repeated at another layer of PCB  120  as needed to form one or more additional layers of windings for embedded coil  135 . Finally, a protective layer may be applied to encapsulate embedded coil  135 . Note that PCB  135  may further include vias and/or other connections for connecting the windings of embedded coil  135  at different layers. 
       FIGS.  2 A- 2 B  show cross-sectional views of two example designs to illustrate the size reduction of the PCB, according to some embodiments. For purposes of illustration, in this example, PCB  220  (and  260 ) are shown to include organic portion  225  (and  265 ) and ceramic portion  230  (and  270 ). As shown in  FIG.  2 A , at least one coil  235  embedded inside PCB  220  at a first side of PCB  220 , and at least one position sensor  240  attached to PCB  220  at a second side opposite the first side of PCB  220 . Further, PCB  220  may include recess  252 , and position sensor  240  may be placed at least partially inside recess  252 . By comparison, in  FIG.  2 B , at least one coil  272  is not embedded but rather mounted on top of PCB  260 . Further, in  FIG.  2 B , at least one position sensor  280  is placed at the same side as coil  275 . For comparison, some dimensions of the components are assumed the same between  FIGS.  2 A and  2 B  as indicated in the figures. Therefore, between  FIGS.  1 A and  2 B , it is clear that the height or thickness of the PCB in  FIG.  2 A  may be reduced by at least the height of embedded coil  235  (e.g., h5), assuming that the other dimensions do not change and the height of position sensor  280  is less than that of embedded coil  235  (e.g., h1&lt;h5). Further, as shown in  FIG.  1 A , the space underneath PCB  220  may be a readily-available space, which would otherwise be unoccupied and wasted in traditional designs as shown in  FIG.  2 B . Thus, moving position sensor  240  to the underneath side of PCB  220  may utilize this readily-available space to help reduce the size of the PCB, especially if position sensor  240  is taller than embedded coil  235 . With position sensor  240  at the underneath side, the above described height or thickness reduction for the PCB by embedding coil  235  inside PCB  220  can still occur even if other layers of PCB  220  (e.g., ceramic portion  230 ) need to get thicker to provide clearance for position sensor  240 . In addition, recess  252  may further offset at least some of the need of the clearance for position sensor  240 . 
       FIG.  3 A  shows the layer stack-up of an example PCB, according to some embodiments. For purposes of illustration, in this example, the PCB is a rigid-flex PCB that includes both a rigid portion (e.g., a hardboard) and a flexible portion (e.g., a flexible circuit). Note that the example may also illustrate the layer stack-up of a rigid PCB that includes only a rigid portion but not a flexible portion. In this example, the rigid portion of the PCB may include six inner layers (e.g., routing layer 1, routing layer 2, . . . , routing layer 6), a core layer, insulation layers (e.g., insulation layer 1, insulation layer 2, . . . , insulation layer 5) for insulating the adjacent routing layers, and two outer protective layers. The flexible portion of the PCB may include two inner layers on each side of the core layer that are connected to routing layer 3 and routing layer 4 of the rigid portion of the PCB. In this example, routing layer 3 is used as a ground layer, whilst layer 4 is used to route signal traces. Thus, the flexible portion of the PCB may connect the ground and signal traces from the rigid portion of the PCB to another portion of the PCB (e.g., to another rigid portion of the PCB) and/or to another component separate from the PCB. The flexible portion of the PCB may further include adhesive layers to join the inner layers with the outer protective layers. As shown in  FIG.  3 A , one or more coils may be embedded inside the rigid portion of the PCB, e.g., at routing layer 1 and routing layer 2. Further, one or more optional, high-density coils may be placed outside the PCB and connected to the embedded coils inside the PCB. 
       FIG.  3 B  is a table showing an example structure of a PCB at two areas with and without a recess, according to some embodiments. In this example, the PCB (e.g., like PCB  120  and  220  in  FIGS.  1 - 2   ) may include eight internal layers (e.g., routing layer 1, routing layer 2, . . . , routing layer 8) each of which may be separated from an adjacent routing layer using an insulation layer (e.g., insulation layer 1, insulation layer 2, . . . , insulation layer 8), a core layer, and two protective layers at each side of the PCB. Note that the term “routing layer” may broadly refer to an internal layer of a PCB that may be used to route a trace such as a signal trace, a power or ground trace, and/or an embedded coil. As shown in  FIG.  3 A , each cell in the table may indicate a height or thickness of the corresponding layer. For instance, h(rl4) may refer to the height or thickness of the routing layer 4 of the PCB. In this example, the recess may be created by including fewer number of layers at the area of the recess (e.g., by removing layers 5-8) than the area without the recess, as indicated in  FIG.  3 A . Alternatively, in some embodiments, the recess may be created by reducing the heights or thickness of one or more layers of the PCB at the area of the recess than the area without the recess. For instance, the height or thickness of the routing layer 5 at the area of the recess may be reduced to be less than the height or thickness of the routing layer 5 at the area without the recess. Note that the above example in  FIG.  3 A  is provided only as an example for purposes of illustration. The structure of the PCB (including, e.g., the number of layers and/or heights of the layers) may be different in some embodiments. 
       FIG.  4    is a high-level diagram flowchart showing methods and techniques for forming an example PCB, according to some embodiments. As shown in this example, in some embodiments, a PCB may be obtained that may include one or more coils, aperture, and/or recesses, as indicated by block  405 . As described above, the coils may be embedded at least partially inside the PCB at a first side of the PCB. The aperture may be created through the PCB at a specified location, e.g., proximate a position sensor is to be mounted at a second side opposite the first side of the PCB and/or in-between the position sensor and at least one corresponding magnet. Further, the recess may be formed at the PCB at the second side at a specified location, e.g., at the location where the position sensor is to be mounted. In some embodiments, the position sensor may be attached to the PCB at the second side of the PCB, as indicated by block  410 . As described above, in some embodiments, the position sensor may be mounted to the second side of the PCB inside a recess, such that the total height or thickness of the PCB may be reduced. In some embodiments, one or more other components, such as a ceramic portion of the PCB and/or a driver for the coil, may be attached to the PCB (e.g., the organic portion of the PCB) as the same side, e.g., the second side, of the PCB as the position sensor. As described above, because all the components are now positioned at the same side of the PCB, they may be mounted to the PCB within one single reflow process. In some embodiments, one or more additional components may be attached to the PCB, e.g., at the first and/or second sides of the PCB, as indicated by block  415 . For instance, one or more additional higher-density coils may be attached to the PCB at the first side of the PCB. In some embodiments, the higher-density coils may be positioned completely outside the PCB and may be electrically coupled with the embedded coils. In some embodiments, the camera may include no component distinct from the image sensor, except the higher-density coils, mounted at the first second side of the PCB. It means that the components may all be mounted at the same side, e.g., the second side, of the PCB in order to reduce the reflows and simplify manufacturing process of the PCB. 
       FIG.  5    illustrates a schematic representation of an example device  500  that may include a camera (e.g., the camera described above in  FIGS.  1 - 4   ) including a PCB arranged as described herein, according to some embodiments. In some embodiments, the device  500  may be a mobile device and/or a multifunction device. In various embodiments, the device  500  may be any of various types of devices, including, but not limited to, a personal computer system, desktop computer, laptop, notebook, tablet, slate, pad, or netbook computer, mainframe computer system, handheld computer, workstation, network computer, a camera, a set top box, a mobile device, an augmented reality (AR) and/or virtual reality (VR) headset, a consumer device, video game console, handheld video game device, application server, storage device, a television, a video recording device, a peripheral device such as a switch, modem, router, or in general any type of computing or electronic device. 
     In some embodiments, the device  500  may include a display system  502  (e.g., comprising a display and/or a touch-sensitive surface) and/or one or more cameras  504 . In some non-limiting embodiments, the display system  502  and/or one or more front-facing cameras  504   a  may be provided at a front side of the device  500 , e.g., as indicated in  FIG.  5   . Additionally, or alternatively, one or more rear-facing cameras  504   b  may be provided at a rear side of the device  500 . In some embodiments comprising multiple cameras  504 , some or all of the cameras may be the same as, or similar to, each other. Additionally, or alternatively, some or all of the cameras may be different from each other. In various embodiments, the location(s) and/or arrangement(s) of the camera(s)  504  may be different than those indicated in  FIG.  5   . 
     Among other things, the device  500  may include memory  506  (e.g., comprising an operating system  508  and/or application(s)/program instructions  510 ), one or more processors and/or controllers  512  (e.g., comprising CPU(s), memory controller(s), display controller(s), and/or camera controller(s), etc.), and/or one or more sensors  516  (e.g., orientation sensor(s), proximity sensor(s), and/or position sensor(s), etc.). In some embodiments, the device  500  may communicate with one or more other devices and/or services, such as computing device(s)  518 , cloud service(s)  520 , etc., via one or more networks  522 . For example, the device  500  may include a network interface (e.g., network interface  510 ) that enables the device  500  to transmit data to, and receive data from, the network(s)  522 . Additionally, or alternatively, the device  500  may be capable of communicating with other devices via wireless communication using any of a variety of communications standards, protocols, and/or technologies. 
       FIG.  6    illustrates a schematic block diagram of an example computing device, referred to as computer system  600 , that may include or host embodiments of a camera including a PCB arrangement, e.g., as described herein with reference to  FIGS.  1 - 5   , according to some embodiments. In addition, computer system  600  may implement methods for controlling operations of the camera and/or for performing image processing images captured with the camera. In some embodiments, the device  500  (described herein with reference to  FIG.  5   ) may additionally, or alternatively, include some or all of the functional components of the computer system  600  described herein. 
     The computer system  600  may be configured to execute any or all of the embodiments described above. In different embodiments, computer system  600  may be any of various types of devices, including, but not limited to, a personal computer system, desktop computer, laptop, notebook, tablet, slate, pad, or netbook computer, mainframe computer system, handheld computer, workstation, network computer, a camera, a set top box, a mobile device, an augmented reality (AR) and/or virtual reality (VR) headset, a consumer device, video game console, handheld video game device, application server, storage device, a television, a video recording device, a peripheral device such as a switch, modem, router, or in general any type of computing or electronic device. 
     In the illustrated embodiment, computer system  600  includes one or more processors  602  coupled to a system memory  604  via an input/output (I/O) interface  606 . Computer system  600  further includes one or more cameras  608  coupled to the I/O interface  606 . Computer system  600  further includes a network interface  610  coupled to I/O interface  606 , and one or more input/output devices  612 , such as cursor control device  614 , keyboard  616 , and display(s)  618 . In some cases, it is contemplated that embodiments may be implemented using a single instance of computer system  600 , while in other embodiments multiple such systems, or multiple nodes making up computer system  600 , may be configured to host different portions or instances of embodiments. For example, in one embodiment some elements may be implemented via one or more nodes of computer system  600  that are distinct from those nodes implementing other elements. 
     In various embodiments, computer system  600  may be a uniprocessor system including one processor  602 , or a multiprocessor system including several processors  602  (e.g., two, four, eight, or another suitable number). Processors  602  may be any suitable processor capable of executing instructions. For example, in various embodiments processors  602  may be general-purpose or embedded processors implementing any of a variety of instruction set architectures (ISAs), such as the x86, PowerPC, SPARC, or MIPS ISAs, or any other suitable ISA. In multiprocessor systems, each of processors  602  may commonly, but not necessarily, implement the same ISA. 
     System memory  604  may be configured to store program instructions  620  accessible by processor  602 . In various embodiments, system memory  604  may be implemented using any suitable memory technology, such as static random access memory (SRAM), synchronous dynamic RAM (SDRAM), nonvolatile/Flash-type memory, or any other type of memory. Additionally, existing camera control data  622  of memory  604  may include any of the information or data structures described above. In some embodiments, program instructions  620  and/or data  622  may be received, sent or stored upon different types of computer-accessible media or on similar media separate from system memory  604  or computer system  600 . In various embodiments, some or all of the functionality described herein may be implemented via such a computer system  600 . 
     In one embodiment, I/O interface  606  may be configured to coordinate I/O traffic between processor  602 , system memory  604 , and any peripheral devices in the device, including network interface  610  or other peripheral interfaces, such as input/output devices  612 . In some embodiments, I/O interface  606  may perform any necessary protocol, timing or other data transformations to convert data signals from one component (e.g., system memory  604 ) into a format suitable for use by another component (e.g., processor  602 ). In some embodiments, I/O interface  606  may include support for devices attached through various types of peripheral buses, such as a variant of the Peripheral Component Interconnect (PCI) bus standard or the Universal Serial Bus (USB) standard, for example. In some embodiments, the function of I/O interface  606  may be split into two or more separate components, such as a north bridge and a south bridge, for example. Also, in some embodiments some or all of the functionality of I/O interface  606 , such as an interface to system memory  604 , may be incorporated directly into processor  602 . 
     Network interface  610  may be configured to allow data to be exchanged between computer system  600  and other devices attached to a network  624  (e.g., carrier or agent devices) or between nodes of computer system  600 . Network  624  may in various embodiments include one or more networks including but not limited to Local Area Networks (LANs) (e.g., an Ethernet or corporate network), Wide Area Networks (WANs) (e.g., the Internet), wireless data networks, some other electronic data network, or some combination thereof. In various embodiments, network interface  610  may support communication via wired or wireless general data networks, such as any suitable type of Ethernet network, for example; via telecommunications/telephony networks such as analog voice networks or digital fiber communications networks; via storage area networks such as Fibre Channel SANs, or via any other suitable type of network and/or protocol. 
     Input/output devices  612  may, in some embodiments, include one or more display terminals, keyboards, keypads, touchpads, scanning devices, voice or optical recognition devices, or any other devices suitable for entering or accessing data by one or more computer systems  600 . Multiple input/output devices  612  may be present in computer system  600  or may be distributed on various nodes of computer system  600 . In some embodiments, similar input/output devices may be separate from computer system  600  and may interact with one or more nodes of computer system  600  through a wired or wireless connection, such as over network interface  610 . 
     Those skilled in the art will appreciate that computer system  900  is merely illustrative and is not intended to limit the scope of embodiments. In particular, the computer system and devices may include any combination of hardware or software that can perform the indicated functions, including computers, network devices, Internet appliances, PDAs, wireless phones, pagers, etc. Computer system  900  may also be connected to other devices that are not illustrated, or instead may operate as a stand-alone system. In addition, the functionality provided by the illustrated components may in some embodiments be combined in fewer components or distributed in additional components. Similarly, in some embodiments, the functionality of some of the illustrated components may not be provided and/or other additional functionality may be available. 
     Those skilled in the art will also appreciate that, while various items are illustrated as being stored in memory or on storage while being used, these items or portions of them may be transferred between memory and other storage devices for purposes of memory management and data integrity. Alternatively, in other embodiments some or all of the software components may execute in memory on another device and communicate with the illustrated computer system via inter-computer communication. Some or all of the system components or data structures may also be stored (e.g., as instructions or structured data) on a computer-accessible medium or a portable article to be read by an appropriate drive, various examples of which are described above. In some embodiments, instructions stored on a computer-accessible medium separate from computer system  900  may be transmitted to computer system  900  via transmission media or signals such as electrical, electromagnetic, or digital signals, conveyed via a communication medium such as a network and/or a wireless link. Various embodiments may further include receiving, sending or storing instructions and/or data implemented in accordance with the foregoing description upon a computer-accessible medium. Generally speaking, a computer-accessible medium may include a non-transitory, computer-readable storage medium or memory medium such as magnetic or optical media, e.g., disk or DVD/CD-ROM, volatile or non-volatile media such as RAM (e.g. SDRAM, DDR, RDRAM, SRAM, etc.), ROM, etc. In some embodiments, a computer-accessible medium may include transmission media or signals such as electrical, electromagnetic, or digital signals, conveyed via a communication medium such as network and/or a wireless link. 
     The methods described herein may be implemented in software, hardware, or a combination thereof, in different embodiments. In addition, the order of the blocks of the methods may be changed, and various elements may be added, reordered, combined, omitted, modified, etc. Various modifications and changes may be made as would be obvious to a person skilled in the art having the benefit of this disclosure. The various embodiments described herein are meant to be illustrative and not limiting. Many variations, modifications, additions, and improvements are possible. Accordingly, plural instances may be provided for components described herein as a single instance. Boundaries between various components, operations and data stores are somewhat arbitrary, and particular operations are illustrated in the context of specific illustrative configurations. Other allocations of functionality are envisioned and may fall within the scope of claims that follow. Finally, structures and functionality presented as discrete components in the example configurations may be implemented as a combined structure or component. These and other variations, modifications, additions, and improvements may fall within the scope of embodiments as defined in the claims that follow.

Metadata:
Filing Date: 20220407
Publication Date: 20240813
Grant Date: 20240813
Priority Date: 20210408
Inventors: JANDHYALA, Sai Harsha
PATEL, HIMESH
Assignee: APPLE INC
CPC Classifications: [{"code": "H05K1/185", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K1/189", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K1/181", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K1/036", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K1/147", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K3/4691", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K2201/10121", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K2201/1009", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K2201/10151", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K1/16", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K2201/10265", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04N23/57", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/54", "inventive": true, "first": false, "tree": "[]"}, {"code": "H02K41/0354", "inventive": true, "first": false, "tree": "[]"}, {"code": "G03B13/36", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/687", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/55", "inventive": true, "first": false, "tree": "[]"}, {"code": "G03B5/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/67", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04N23/687", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/67", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/55", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/54", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K2201/10151", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K2201/1009", "inventive": false, "first": false, "tree": "[]"}, {"code": "G03B2205/0069", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K3/303", "inventive": true, "first": false, "tree": "[]"}, {"code": "G03B5/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "G03B13/36", "inventive": true, "first": false, "tree": "[]"}, {"code": "H02K41/0354", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K1/181", "inventive": true, "first": true, "tree": "[]"}, {"code": "H05K2201/10151", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K2201/1009", "inventive": false, "first": false, "tree": "[]"}, {"code": "G03B2205/0069", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K3/303", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/687", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/67", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/55", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04N23/54", "inventive": true, "first": false, "tree": "[]"}, {"code": "H02K41/0354", "inventive": true, "first": false, "tree": "[]"}, {"code": "G03B13/36", "inventive": true, "first": false, "tree": "[]"}, {"code": "G03B5/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K1/181", "inventive": true, "first": true, "tree": "[]"}]
Family ID: 92217325