WO2020108192A1 - 线路板拼板及其制造方法和感光组件、摄像模组 - Google Patents

线路板拼板及其制造方法和感光组件、摄像模组 Download PDF

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Publication number
WO2020108192A1
WO2020108192A1 PCT/CN2019/113346 CN2019113346W WO2020108192A1 WO 2020108192 A1 WO2020108192 A1 WO 2020108192A1 CN 2019113346 W CN2019113346 W CN 2019113346W WO 2020108192 A1 WO2020108192 A1 WO 2020108192A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
area
camera module
imposition
regions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/113346
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English (en)
French (fr)
Inventor
易峰亮
黄华
席逢生
郭飞
霍丽丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Sunny Opotech Co Ltd
Original Assignee
Ningbo Sunny Opotech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811416423.6A external-priority patent/CN109379519B/zh
Priority claimed from CN201811453031.7A external-priority patent/CN111263507A/zh
Application filed by Ningbo Sunny Opotech Co Ltd filed Critical Ningbo Sunny Opotech Co Ltd
Publication of WO2020108192A1 publication Critical patent/WO2020108192A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details

Definitions

  • the invention relates to the field of camera modules, and more specifically relates to a circuit board assembly with a guide groove and a manufacturing method thereof, which is convenient for reducing the distance between adjacent circuit boards of the circuit board assembly and making circuit boards of the same size More circuit board areas can be arranged to increase output rate and reduce costs.
  • molding technology is one of the commonly used camera module manufacturing technologies, such as MOC camera modules (Molding On Chip) and MOB camera modules (Molding On Board).
  • the MOB camera module is to form the molded base only in the non-chip area of the circuit board, that is, the outer area of the photosensitive chip; and the MOC camera module is to form the molded base to form the surface of the circuit board and the outer edge area of the photosensitive chip.
  • the upper mold is pressed against the preset position of the circuit board, the liquefied molding material is injected, and the molding material is cured by heating and the like to form the molding base of the camera module, which is to play a role The role of the lens holder in the molded camera module.
  • the circuit board imposition needs to provide a location to carry the molding runner.
  • the top side of each circuit board area of the circuit board assembly needs to be provided with a continuous horizontal flow channel, and the adjacent circuit board areas in the same row need to be provided with a longitudinal flow channel.
  • the arrangement of the longitudinal flow channels of the adjacent circuit board areas in the same row also needs to consider the subsequent cutting process.
  • the areas of adjacent circuit boards in the same row are separated by more than 1 mm. If you want to arrange more circuit board areas on the same size circuit board, to reduce costs, you need to reduce the spacing of adjacent circuit board areas in the same row. But the ensuing problem is that the interval between adjacent circuit board regions in the same row is reduced, and it is impossible to provide layout space for the copper-containing layer between adjacent circuit board regions in the same row.
  • the avoidance space reserved on both sides of the copper-containing layer in the spacing area will also be small.
  • the cutting knife can easily cut the Copper layer.
  • the copper-containing layer has a high hardness and is difficult to cut, which not only wears the cutter but also affects the cutting efficiency.
  • the tool will generate heat during the cutting of the copper-containing layer, which may affect the flatness of each circuit board area and even damage electronic components.
  • solder resist ink layer is cured without the copper-containing layer, and cracking and warping may occur. So if you want to arrange more circuit board areas on the same size circuit board, you will encounter many problems that need to be solved.
  • Mobile phone camera modules are usually composed of circuit boards, lenses, sensors, connectors, capacitors, resistors, etc. During production, the sensors, connectors, lenses, capacitors, resistors, etc. are mounted or soldered on the circuit board to form a whole, which can realize the camera function of the mobile phone camera module.
  • Mobile phone camera module circuit boards generally include FPC flexible printed circuit boards, PCB rigid printed circuit boards and soft and hard combined printed circuit boards.
  • the production process includes cutting board, pattern transfer, surface blackening, pressure relief board, x-ray drilling target, trimming, etc.
  • the board can facilitate the mechanization of production, greatly improve the production efficiency, and can also reduce waste and save costs.
  • the utility models with authorization announcement numbers CN204810689U and CN202949639U both disclose a mobile phone camera module circuit board imposition structure, which is produced by assembling several camera module circuit boards into an imposition.
  • the camera module circuit board assembly includes a circuit board, a connection belt and a connector, wherein the circuit board is generally square, and multiple copper layers and insulation layers are stacked alternately, on which are integrated electronic elements such as capacitors, resistors, diodes, triodes, etc.
  • the device and the circuit board area are generally attached with a photosensitive chip.
  • the lens is placed on the photosensitive path of the photosensitive chip to form a camera module; the connector has multiple solder joints for connecting to terminals such as mobile phones, and the connection belt is generally Flexible flexible board that can be bent for connecting circuit boards and connectors.
  • circuit board imposition is generally a whole piece of material with a width of 250mm and any length, and the PCBs are connected to each other.
  • the whole board carries the PCB board as a whole, because the PCB boards are connected with a narrow connection position, the connection strength of the PCB will be reduced, which will cause the PCB board to bend and reduce the flatness of the PCB board.
  • PCB board tolerance control requirements In order to improve the connection strength and flatness of the PCB board, as shown in FIG. 14, in the prior art, the 250 mm wide version is split into a small imposition 101 and a small imposition 102 that are spliced together.
  • Each row of the small imposition 101 can accommodate multiple pieces
  • the circuit board 103 is connected to each circuit board 103 through a connection bit 104.
  • the splicing area of the small imposition 101 and the small imposition 102 as a waste area will cause a low utilization rate of the board.
  • Another advantage of the present invention is to provide a circuit board puzzle and its manufacturing method and photosensitive assembly, camera module, wherein the interval between adjacent circuit boards in the same row can be realized between 0.3mm and 0.4mm, and can be avoided Cut to the problem of cracking and lifting when the copper-containing layer and the solder resist ink layer are cured.
  • Another advantage of the present invention is to provide a circuit board assembly and manufacturing method thereof, a photosensitive component, and a camera module. Compared with the prior art, there is no need to additionally provide a copper-containing layer in adjacent circuit board areas in the same row. The problem of cracking and warping when the solder resist ink layer is cured can also be avoided.
  • Another advantage of the present invention is to provide a circuit board assembly and its manufacturing method, photosensitive assembly, and camera module, in which adjacent circuit board areas in the same row do not need to be additionally provided with a copper-containing layer, thereby avoiding cutting in the cutting process
  • the knife can easily cut the copper-containing layer in the spaced area, thereby avoiding the heat generation problem in the cutting process, and maintaining the flatness of each circuit board area.
  • Another advantage of the present invention is to provide a circuit board puzzle and its manufacturing method and photosensitive assembly, camera module, wherein the circuit board puzzle can avoid heat damage to electronic components during the cutting process, thereby improving the quality rate.
  • Another advantage of the present invention is to provide a circuit board assembly and its manufacturing method, photosensitive assembly, and camera module, in which adjacent circuit board areas in the same row do not require additional copper-containing layers, thereby requiring subsequent cutting processes Reduced and improved cutting efficiency.
  • Another advantage of the present invention is to provide a circuit board assembly and manufacturing method thereof, a photosensitive assembly, and a camera module, wherein a stress guide groove is provided between the solder resist ink layers of adjacent circuit board regions in the same row to facilitate release
  • the stress during ink curing solves the problem of cracking and warping during ink curing.
  • Another advantage of the present invention is to provide a circuit board puzzle and its manufacturing method, photosensitive assembly, and camera module, in which adjacent circuit board areas in the same row can be separated with only a knife, compared to the current There are technologies that require two cuts to improve cutting efficiency.
  • the camera module includes a camera module circuit board obtained by the camera module circuit board imposition, so that the camera During the installation of the module, the circuit board of the camera module can avoid scratching the operator.
  • a circuit board imposition includes a plurality of circuit board units, wherein a through groove or a guide groove is provided between adjacent circuit board units.
  • the circuit board imposition includes multiple sets of camera module circuit board components, each camera module circuit board component includes a square camera module circuit board, a connector, and a connection belt connecting the camera module circuit board and the connector, each The circuit board assembly of the camera module includes a plurality of circuit board units, and two adjacent circuit board units are connected by a first through slot;
  • the first through-slot and the second through-slot are made of insulating material, which is the waste area of the camera module circuit-board assembling.
  • the first through-slot and the second through-slot are used to connect the adjacent two. The function of a camera module circuit board and enhances the strength and flatness of the entire imposition, so that the entire imposition material can meet the requirements of tolerance control.
  • first through groove and the second through groove are angle grooves.
  • the width of the first through slot and the second through slot is at least larger than the width required for cutting to prevent the copper layer from leaking out of the edge of the camera module circuit board after cutting to prevent short circuit.
  • the width of the first through groove and the second through groove is greater than 1 mm.
  • the depth of the first through slot and the second through slot is 1/5 to 1/3 of the height of the camera module circuit board.
  • a plurality of connecting parts are provided between two groups of adjacent camera module circuit board components, and each connecting part is connected to two opposite connectors to realize the adjacent two groups of camera module circuit board components Connection.
  • the connecting part is an easy-to-separate connecting part, which is convenient for separating the circuit board assembly of each group of camera modules.
  • the camera module circuit board imposition further includes at least two positioning holes, which are disposed in the edge scrap area of the camera module circuit board imposition.
  • the positioning hole is mainly used to fix the camera module circuit board imposition on the fixed tooling, which is convenient for the drilling, indentation, cutting and other processes of the imposition.
  • the positioning holes are symmetrically distributed in the edge scrap area of the camera module circuit board imposition.
  • the symmetrical distribution of the positioning holes can improve the fixing stability of the camera module circuit board imposition.
  • the circuit board imposition further includes at least two mark points used for positioning when the imposition is photographed and identified, which is provided in the edge scrap area of the camera module circuit board imposition.
  • the marking point may be located near the positioning hole in the edge scrap area of the camera module circuit board imposition.
  • each corner of the camera module circuit board is a quarter-circle concave chamfer, this can avoid the camera module circuit board from scratching the installer, and can also avoid Knock or scratch other parts.
  • the present invention further provides a circuit board assembly with a guide slot, including:
  • a circuit board body layer wherein the circuit board body layer has a plurality of circuit board regions and a plurality of first spaced regions, wherein the circuit board regions are laterally arranged at intervals, one of the adjacent circuit board regions in the same row Define the first compartment area;
  • solder resist ink layer wherein the solder resist ink layer is coated on the surface of the circuit board body layer, wherein the solder resist ink layer has at least one guide groove, wherein the guide groove is located in the first spaced region In the process of curing the solder resist ink layer, the guide groove guides the ink to release stress.
  • the guide groove located in the first spacing area is elongated and extends from the upper edge of the first spacing area to the lower edge of the first spacing area.
  • the guide grooves located in the first spacing area are arranged at intervals in the first spacing area.
  • the peripheral wall of the guide groove located in the first spaced region is located inside with respect to the circuit board region.
  • the width of the guide groove located in the first spacing area does not exceed the width of the first spacing area, but not less than 0.2 mm.
  • the width of the first spacing area is between 0.3 mm and 0.4 mm.
  • the first spacer region is implemented as an insulating spacer region.
  • the circuit board puzzle further has at least one second spaced region, wherein the circuit board regions are arranged in an array in at least two rows at intervals, wherein adjacent ones of the circuit board regions in the same row Defines the second interval area.
  • the second partition area is provided with the guide groove.
  • the guide groove located in the second spaced region is elongated and extends from one end to the other end of the second spaced region.
  • the guide groove provided in the second spaced area and the guide groove provided in the second spaced area are in communication.
  • the guide grooves located in the second spaced area are arranged at intervals in the second spaced area.
  • the width of the guide groove located in the second spaced region does not exceed the width of the second spaced region, but is not less than 0.2 mm.
  • the width of the second spacing area is between 0.3 mm and 0.4 mm.
  • the present invention further provides a circuit board assembly, including:
  • a circuit board body layer wherein the circuit board body layer has a plurality of circuit board regions and a plurality of insulating space regions, wherein the circuit board regions are arranged laterally at intervals, between adjacent circuit board regions in the same row Define the insulation spacing area;
  • solder resist ink layer wherein the solder resist ink layer is coated on the surface of the circuit board body layer.
  • the circuit board regions are arranged in an array in at least two rows at intervals, wherein the insulating space regions are defined between adjacent circuit board regions in the same column.
  • the present invention further provides a method for manufacturing a circuit board assembly, including:
  • circuit board body layer Forming a circuit board body layer, wherein the circuit board body layer has a plurality of circuit board regions and a plurality of spaced regions arranged in an array, wherein the spaced regions space the adjacent circuit board regions;
  • solder resist ink layer on the outer surface of the main body layer of the circuit board, wherein the solder resist ink layer has a plurality of guide grooves, wherein the guide grooves are located in the spaced regions;
  • solder resist ink layer is cured, wherein the guide groove guides the solder resist ink layer to release stress.
  • the spacer region is implemented as an insulating spacer region.
  • the invention further provides a photosensitive element, including:
  • a circuit board wherein the circuit board has a circuit body layer and an ink layer, wherein the ink layer covers the surface of the circuit body layer, wherein the edge of the ink layer is located on the copper-containing layer of the circuit body layer outside of the edge;
  • a photosensitive chip wherein the photosensitive chip is electrically connected to the surface of the circuit board;
  • a molded base wherein the molded base encapsulates the photosensitive chip on the surface of the circuit board using a molding process.
  • the molded base has a bottom edge portion, wherein the bottom edge portion is convex relative to the bottom of the molded base, is located outside the ink layer, and covers the Part of the edge of the ink layer.
  • the present invention further provides a camera module, including:
  • An optical component wherein the optical component is supported on the top side of the photosensitive component, corresponding to the photosensitive path of the photosensitive component.
  • the invention further provides a photosensitive element, including:
  • At least two photosensitive chips wherein each corresponding circuit board area electrically connects the corresponding photosensitive chip
  • a molded base wherein the molded base uses a molding process to encapsulate a plurality of the photosensitive chips on the surface of the circuit board and fill the guide groove.
  • the present invention further provides a camera module, including:
  • At least two optical components wherein the optical component is supported on the top side of the photosensitive component, corresponding to the photosensitive path of the photosensitive component.
  • the circuit board imposition provided by the present invention utilizes the first through slot and the second through slot to closely arrange the camera module circuit board components on the entire imposition, which is greatly improved on the basis of ensuring the connection strength and flatness between the circuit boards The utilization ratio of the circuit board imposition is increased.
  • the camera module provided by the present invention includes a camera module circuit board cut from the camera module circuit board imposition. During the installation of the camera module, the quarter-round arc of the camera module circuit board is concave Chamfering can significantly prevent the edge of the camera module circuit board from scratching the installer.
  • FIG. 1 is a plan view of a circuit board imposition in the prior art related to the present invention.
  • FIG. 2 is a partial enlarged view of the above-mentioned prior art circuit board imposition.
  • FIG. 3 is a partial cross-sectional view along the B-B direction of the aforementioned prior art circuit board imposition.
  • FIG. 4A is a top view of a circuit board imposition according to an embodiment of the invention.
  • 4B is a partial enlarged view of the circuit board imposition according to the above embodiment of the present invention.
  • 4C is a perspective view of a partially enlarged view of the circuit board imposition according to the above embodiment of the present invention.
  • 4D is a partial cross-sectional view along the D-D direction of the circuit board imposition according to the above-described embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a circuit board body layer of a circuit board imposition according to the present invention.
  • 6A is a partial plan view of a circuit board imposition according to a modified embodiment of the above-described embodiment of the present invention.
  • 6B is a partial perspective view of the circuit board imposition according to the above-described modified embodiment of the present invention.
  • FIG. 7 is a top view of a circuit board imposition according to another embodiment of the present invention.
  • FIG. 8A is a partially enlarged view of a circuit board imposition according to the above-described another embodiment of the present invention.
  • FIG. 8B is a cross-sectional view of the circuit board imposition in the F-F direction according to another embodiment of the present invention.
  • FIG. 8C is a cross-sectional view of the circuit board imposition in the G-G direction according to another embodiment of the present invention.
  • FIG. 8D is a partial perspective view of a circuit board imposition according to another embodiment of the present invention.
  • 9A is a partial plan view of a circuit board imposition according to a modified embodiment of the above-described another embodiment of the present invention.
  • FIG. 9B is a partial perspective view of a circuit board imposition according to a modified embodiment of the above-described another embodiment of the present invention.
  • FIG. 10 is a perspective view of a photosensitive element according to an embodiment of the invention.
  • 11A is a cross-sectional view of the photosensitive assembly according to the above-described embodiment of the present invention.
  • 11B is a cross-sectional view of a camera module according to the present invention.
  • FIG. 12B is a cross-sectional view of a dual camera module according to the present invention.
  • FIG. 13 is a flowchart of a method for manufacturing a circuit board imposition according to the present invention.
  • FIG. 16 is a schematic structural diagram of a camera module circuit board according to a first modified embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a camera module circuit board assembly according to a first modified embodiment of the present invention.
  • the term “a” should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of an element can be one, and in other embodiments, the The quantity can be more than one, and the term “one” cannot be understood as a limitation on the quantity.
  • the circuit board assembly 100 includes a circuit board body layer 110 and a solder resist ink layer 120.
  • the solder resist ink layer 120 is coated on the surface of the circuit board body layer 110 to form a protective film layer, thereby forming the circuit board puzzle 100.
  • the circuit board body layer 110 is a circuit board body in which a signal layer, a copper-containing layer, an insulating layer and the like required by the circuit board are stacked in a certain order.
  • the circuit board body layer 110 may be implemented such that the signal layer is respectively disposed on the uppermost layer and the lowermost layer, and multiple copper-containing layers and multiple insulating layers are alternately disposed between the two signal layers, as shown in FIG. 5 .
  • the circuit board body layer 110 may also include other functional layers, such as a mechanical layer that defines the size of the wiring planning board frame. That is to say, the structure and design of the circuit board body layer 110 of the present invention are not limited, and those skilled in the art can use the known lamination method to realize the structure of the circuit board body layer 100.
  • the solder resist ink layer 120 is coated on the surface of the circuit board body layer 110.
  • the solder resist ink layer 120 can selectively shield the wires so that the pattern is not damaged, and no short circuit occurs during solder resist.
  • the film-forming substance of the solder resist ink layer 120 can have good chemical resistance, solvent resistance, heat resistance, and insulation, and has functions of moisture resistance and salt spray, preventing the solder from adhering to unnecessary parts and preventing Copper contamination of solder baths, etc.
  • the solder resist ink layer 120 may be applied to the surface of the circuit board body layer 110 by screen printing, gravure printing, inkjet printing, etc., and then subjected to curing treatment to form the solder resist ink ⁇ 120 ⁇ Layer 120.
  • a specific pattern of ink is printed on the outer surface of the circuit board body layer 110 on the surface of the circuit board body layer 110 after the wiring is arranged, by screen printing or roll coating on the negative film.
  • the ink is cured by exposure or the like. The cured ink protects the circuit from damage and does not cause a short circuit during solder resist.
  • the circuit board body layer 110 has a plurality of circuit board regions 130 and a plurality of first spacing regions 140.
  • the circuit board regions 130 are horizontally arranged at intervals on the circuit board puzzle 100, and the first space regions 140 are defined between adjacent circuit board regions 130 in the same row.
  • the circuit board puzzle 100 includes a plurality of connectors 160 electrically connected to the corresponding circuit board area 130.
  • the connector 160 extends outward from the corresponding board area 130.
  • the circuit board puzzles are arranged end to end in the column direction. That is, the connector 160 of the circuit board of the previous row is connected to or close to the circuit board area 130 of the circuit board of the next row.
  • the circuit board area 130 and the first spacing area 140 are arranged at intervals from each other.
  • the circuit board area 130 corresponds to the wiring area of the circuit board body layer 110 (that is, the area where the signal layer, the copper-containing layer and the insulating layer in the circuit board body layer 110 are arranged), when the circuit board After the puzzle 100 is cut, the circuit board area 130 forms a corresponding circuit board unit.
  • the first spacing region 140 corresponds to a non-wired region of the circuit board body layer 110 (that is, no signal layer, copper-containing layer, and insulating layer are arranged in the circuit board body layer 110), and can be used for cutting. That is to say, cutting along the first spacing region 140, the circuit board region 130 can correspondingly form a circuit board monomer.
  • the solder resist ink layer is continuously arranged on the surface of the circuit board body layer. That is, the circuit board area and the space area are continuously covered.
  • the prior art provides a copper-containing layer in the spaced region of the circuit board body, so that the solder resist ink is cured on the copper layer, and the copper has good toughness, which is compacted and prevented from cracking. Function as shown.
  • These settings benefit from the large size of the spacing area in the prior art, generally at least 1 mm. Not only can space be provided for the copper-containing layer, but also space can be reserved for the cutting area on both sides of the copper-containing layer, as described above, and will not be repeated here.
  • the output rate is increased, and the cost is reduced.
  • the interval between the circuit boards adjacent to the same row in the present invention is smaller.
  • the interval between adjacent circuit boards in the same row can be between 0.3 mm and 0.4 mm, and the problem of cracking and warping when the copper-containing layer and the solder resist ink layer are cured can be avoided.
  • the width W 1 of the first spacing region 140 is between 0.3 mm and 0.4 mm, and there is no need to provide a copper-containing layer in the spacing region of the circuit board body . That is, the first spacer region 140 in the present invention is implemented as an insulating spacer region, and is laid by an insulating layer.
  • the solder resist ink layer 120 has at least one guide groove 121 for guiding the ink to release stress when the solder resist ink is solidified to prevent lifting and cracking.
  • the guide groove 121 is located between the first space area 140, that is, between the adjacent circuit board areas 130.
  • the width W 1 of the first spacing region 140 is 0.33 mm.
  • FIG. 4D it is a cross-sectional view of the circuit board assembly 100 in the first space area 140 and its periphery.
  • the formation of the guide groove 121 exposes the insulation layer of the circuit board assembly 100.
  • the direction toward the center of the first spacing region 140 is inward, and the direction from the first spacing region 140 toward the circuit board regions 130 on both sides is outward.
  • the peripheral wall of the guide groove 121 is located inside the circuit board region 130. That is to say, in a preferred embodiment of the present invention, the guide groove 121 spaces the solder resist ink layer 120 into a plurality of solder resist ink regions 122.
  • the guide groove 121 may also be implemented in other shapes and sizes, for example, the guide groove 121 has a cylindrical shape, a truncated cone shape, a trapezoidal cross-section, etc. As shown in FIGS. 6A and 6B, the first spacing region 140 is not limited herein.
  • the guide groove 121 can be formed by pre-designing the printing plate in screen printing, gravure printing, and inkjet printing to avoid printing ink at a predetermined position of the guide groove 121.
  • the shape and size of the neglected guide groove 121 can also be achieved by adjusting or changing the printing plate.
  • a plurality of photosensitive chips 200 and a series of electronic components 300 are mounted on each of the circuit board regions 130 respectively.
  • the circuit board assembly 100 with the photosensitive chip 200 and the electronic component 300 is placed in a lower mold, and the upper mold is pressed against a predetermined position in the circuit board area, and the liquefied molding is injected material.
  • the molding material circulates through the flow channel corresponding to the spaced area and is filled to a preset position.
  • the molding material is cured by heating or the like to form a molding base.
  • the cutting blade separates the adjacent circuit board regions 130 in the same row along the first spacing region 140 to form a plurality of photosensitive components.
  • the cutting blade can cut along the guide groove 121. In the photosensitive element just obtained, the corresponding edge of the solder resist ink area 122 is still located outside the edge of the circuit board area 130. Then, you can further cut off the excess part to reduce the size of the photosensitive component.
  • the first spacing region 140 is not provided with a copper-containing layer, there is no need to worry about the copper-containing layer of the cutting blade during the cutting process, thereby preventing heat generation, protecting electronic components and improving cutting efficiency.
  • the circuit board assembly 100A includes a circuit board body layer 110A and a solder resist ink layer 120A.
  • the solder resist ink layer 120A is coated on the surface of the circuit board body layer 110A.
  • the circuit board assembly 100A has a plurality of circuit board regions 130A, a plurality of first spacing regions 140A and a second spacing region 150A.
  • the circuit board regions 130A are arranged at intervals in the circuit board puzzle 100A in two rows.
  • the first space area 140A is defined between the circuit board areas 130A adjacent in the same row
  • the second space area 150A is defined between the circuit board areas 130A adjacent in the same row.
  • the first spacer region 140A and the second spacer region 150A are in contact, and correspond to the flow channel during molding.
  • the first separation area 140A is located on both sides of the second separation area 140A.
  • the circuit board panels are adjacent to each other in the column direction.
  • a plurality of connectors 160A electrically connected to the corresponding circuit board area 130A respectively extend outward from both sides of the circuit board puzzle 100A.
  • the circuit board area 130A of the previous row of circuit board puzzles is close to the circuit board area 130A of the next row of circuit board puzzles.
  • the solder resist ink layer 120A is provided with a corresponding guide groove 121A in the first space area 140A, and a corresponding guide groove 121A is also provided in the second space area 150A.
  • the guide groove 121A provided in the first space area 140A may be used to release the stress generated when the ink in the first space area 140A solidifies.
  • the guide groove 121 provided in the second space area 150A may be used to release the stress generated when the ink in the second space area 150A solidifies.
  • the guide groove 121A is elongated.
  • the guide groove 121 provided in the second space area 150A and the guide groove 121A provided in the second space area 150A communicate with each other.
  • the guide groove 121A provided in the first space area 140A may extend from the upper edge of the first space area 140A to the second space The top edge of area 150A.
  • the guide groove 121A provided in the first spacing area 140A may extend from the lower edge of the second spacing area 150A to the first spacing area 140A Bottom edge.
  • the guide groove 121A provided in the second spacing region 150A extends from one end to the other end of the second spacing region 150A.
  • the guide groove 121A may also be implemented in other shapes and sizes, for example, the guide groove 121A has a cylindrical shape, a truncated cone shape, a trapezoidal cross-section, etc., or a plurality of the guide grooves 121A are provided at intervals
  • the first spacing area 140A or the second spacing area 150A is not limited herein by the present invention.
  • FIG. 8B it is an interface view of the circuit board puzzle 100A in the F-F direction, showing a cross-sectional view of the first spacing area 140A and its surroundings.
  • the formation of the guide groove 121A of the first spacing area 140A allows the wiring board assembly 100A to expose an insulating layer at the first spacing area 140A.
  • the direction toward the center of the first spacing region 140A is inward, and the direction from the first spacing region 140A toward the circuit board regions 130A on both sides is outward.
  • the peripheral wall of the guide groove 121A is located inside the circuit board area 130A.
  • FIG. 8C it is an interface view of the circuit board puzzle 100A in the G-G direction, showing a cross-sectional view of the second spacing area 150A and its surroundings.
  • the formation of the guide groove 121A of the second spacing region 150A allows the circuit board assembly 100A to also expose the insulating layer at the second spacing region 150A.
  • the direction toward the center of the second spacing region 150A is inward, and the direction from the second spacing region 150A toward the circuit board regions 130A on both sides is outward.
  • the peripheral wall of the guide groove 121A is located inside with respect to the circuit board area 130A.
  • the solder resist ink area 122A covers the outer edge of the corresponding circuit board area 130A and the adjacent second space area 150A. In other words, the edge of the solder resist ink region 122A is located outside the edge of the circuit board region 130A and inside the second space region 150A.
  • a plurality of photosensitive chips 200 and a series of electronic components 300 are mounted on each of the circuit board regions 130 respectively.
  • the circuit board assembly 100 with the photosensitive chip 200 and the electronic component 300 is placed in a lower mold, and the upper mold is pressed against a predetermined position in the circuit board area, and the liquefied molding is injected material.
  • the molding material circulates through the flow channels corresponding to the first partition area and the second partition area, and is filled to a preset position.
  • the molding material is cured by heating or the like to form a molded one-piece base.
  • a cutting blade or a laser separates the circuit board area 130A adjacent to the same row along the first spacing area 140A, and separates the line adjacent to the same row along the second spacing area 150A
  • the circuit board area 130A forms a plurality of photosensitive components.
  • the cutting blade can cut along the guide groove 121A.
  • the corresponding edge of the solder resist ink area 122A is still located outside the edge of the circuit board area 130A. Then, you can further cut off the excess part to reduce the size of the photosensitive component.
  • the photosensitive assembly just cut includes a circuit board 400, the photosensitive chip 200, a series of the electronic components 300 and a molded base 500.
  • the photosensitive chip 200 and the electronic component 300 are communicably attached to the circuit board 400.
  • the molding base 500 encapsulates the photosensitive chip 200 and the electronic component 300 on the circuit board 400 through a molding process, and can form a MOB or MOC camera module.
  • the molded base 500 has a light window 520 corresponding to the photosensitive chip 200.
  • the circuit board 400 is obtained by cutting the circuit board assembly 100, that is to say, the circuit board 400 has a circuit body layer 410 and an ink layer 420.
  • the circuit body layer 410 is cut by the circuit board body layer 110 of the circuit board puzzle 100, and the ink layer 420 is cut by the solder resist ink layer 110 of the circuit board puzzle 100.
  • the ink layer 420 covers the surface of the circuit body layer 410.
  • the edge of the ink layer 420 is located outside the edge of the copper-containing layer of the circuit body layer 410, as shown in FIGS. 10 and 11A.
  • the circuit board assembly 100 of the present invention is also suitable for producing multi-camera camera modules, as shown in FIGS. 12A and 12B. That is, when cutting, a laser cutting or blade cutting is used to cut the circuit board assembly 100 into a plurality of circuit boards 400 having at least two of the circuit board regions 130, wherein between the adjacent circuit board regions 130 A partition area (part of the first partition area or the second partition area) is defined.
  • the ink layer 420 is coated on the surface of the circuit body layer 410 of the circuit board 400, and the guide groove 121 is provided in the spaced region.
  • the cut circuit board 400 has two adjacent circuit board regions 130, wherein each circuit board region corresponds to an electrical connection between the corresponding photosensitive chip 200 and the electronic element. ⁇ 300 ⁇ The device 300.
  • a space area is defined between two adjacent 130 of the circuit board area, and the ink layer 420 is provided with a guide groove in the space area.
  • the molded base 500 encapsulates the photosensitive chip 200 and the electronic component 300 on the surface of the circuit board 400 and fills the guide groove 121 between two adjacent circuit board regions 130.
  • the bottom edge portion 510 of the molded base 500 contacts the upper surface of the circuit body layer 410 of the circuit board 400. Moreover, the bottom edge portion 510 is located outside the ink layer 420 and covers a part of the edge of the ink layer 420. The bottom edge portion 510 protrudes from the bottom of the molding base 500 and has the same height as the depth of the guide groove 121.
  • the multiple optical components 600 are correspondingly supported on the top side of the photosensitive component of the multi-camera camera module, respectively corresponding to the photosensitive paths of the corresponding photosensitive chips.
  • the present invention further provides a circuit board imposition manufacturing method, which can be used in the manufacture of the above circuit board imposition to achieve the objectives and advantages of the present invention, as shown in FIG. 13.
  • Step 610 Form a circuit board body layer, wherein the circuit board body layer has a plurality of circuit board regions and a plurality of spaced regions arranged in an array, wherein the spaced regions space adjacent circuit board regions.
  • the present invention is not limited.
  • the dry film is pressed.
  • the preset negative film is attached to the dry film, and exposure treatment is performed using light irradiation.
  • 1% Na 2 CO 3 can be used to wash 2.5kg/cm 2 under pressure to achieve development.
  • an acid etching solution the exposed dry film is used as a resist to etch copper.
  • the width of the space area can be further reduced.
  • the width of the spaced region is 0.3 mm to 0.4 mm.
  • Step 620 Print a solder resist ink layer on the outer surface of the main body layer of the circuit board, wherein the solder resist ink layer has a plurality of guide grooves, wherein the guide grooves are located in the spacing area.
  • the printing technology of the solder resist ink layer may use screen printing, gravure printing, inkjet printing and the like.
  • the guide groove is preferably elongated and penetrates the spaced region.
  • the width of the guide groove is at least 0.2 mm.
  • the width of the guide groove is smaller than the width of the space area.
  • Step 630 Curing the solder resist ink layer, wherein the guide groove guides the solder resist ink layer to release stress.
  • Step 640 Electrically connect the photosensitive chip and/or electronic components to the corresponding circuit board area.
  • Step 650 A molding process is used to encapsulate the photosensitive chip and/or electronic components to form a photosensitive assembly panel.
  • Step 660 Cutting the photosensitive assembly panel along the spaced area to form a plurality of photosensitive assemblies.
  • the spacing area in the present invention is an insulating spacing area, no copper-containing layer is provided in the spacing area, and each spacing area only needs to be cut once. Compared with the existing need to avoid cutting the copper-containing layer twice, the efficiency is higher.
  • the circuit board imposition 100 provided by the first modified embodiment of the present invention includes multiple sets of camera module circuit board assemblies 700, and each camera module circuit board assembly 700 includes a camera module circuit board 703 and a connector 701.
  • Each group of camera module circuit board components includes a plurality of circuit board units, two adjacent circuit board units are connected by a first through slot 704, and each circuit board unit includes two camera modules symmetrically distributed along the parallel line of the connector 701
  • the circuit board assembly is assembled, and the two camera module circuit board assemblies are connected through the second through slot 705.
  • the circuit board imposition 100 provided in this embodiment is made by a full-scale imposition.
  • a multilayer circuit board is formed by providing a plurality of copper layers, insulating layers, cover films, etc. on a substrate with a width of 250 mm and any length.
  • the copper layer only lays the required circuits in the areas of the camera module circuit board 703, the connection band 702 and the connector 701 of the array, and the first through slot 704 and the second through slot 705 in the imposition do not contain a copper layer, thereby forming
  • the camera module circuit board components are assembled, and each camera module circuit board component is electrically isolated.
  • the array of camera module components on the whole plate is bound to leave a part of the remaining material In the area 710, after forming the array of the camera module circuit board components, it is necessary to remove the excess residual material area, and processes such as an indenter, a milling cutter, and a file can be used.
  • first through-slot 704 and the second through-slot 705 between the camera module circuit board components are used as subsequent cutting areas when the circuit board imposition 100 is cut into a single camera module circuit board component, because the first The through-slot 704 and the second through-slot 705 do not include a copper layer with a relatively high hardness, so it becomes easy and hard to wear the cutter when cutting the circuit board imposition 100. It should be understood that the number of circuit board layers of the camera module circuit board assembly is not limited, and is determined by the electrical design of the specific product.
  • the camera module circuit board 703 is actually composed of copper layers 801, 803, 805, and 807 and insulating layers 802, 804, and 806 interleaved.
  • the preparation process there is no copper plating between the two camera module circuit boards, that is, only the insulating layer 802, 804, 806 is plated between the camera module circuit boards to form a through slot made of plated material, the through slot is just right.
  • the connecting part connects the adjacent camera module circuit boards, due to the large area of the through slot, the strength and flatness of the entire imposition are enhanced, so that the entire imposition material can meet the requirements of tolerance control.
  • the first through-slot 704 and the second through-slot 705 are chamfered grooves, the width of which is at least larger than the width required for cutting to prevent the copper layer from leaking out of the edge of the camera module circuit board after cutting to prevent short circuit.
  • the first The width of the groove 704 and the second through groove 705 is greater than 1 mm, and the groove depth is 1/5 to 1/3 of the height of the circuit board of the camera module.
  • the first through-slot 704 and the second through-slot 705 as connecting members greatly enhance the strength between the circuit boards, so the flatness of the camera module circuit board is greatly improved, and thus the quality of the camera module can also be improved.
  • the corner of the camera module circuit board will leave a 90° corner.
  • the 90° corner of the camera module circuit board will bump or scratch Injury to other parts is also likely to scratch the operating staff.
  • a through hole 707 is provided in the center of the first through slot 704, and two semi-circular arc edges are provided at both ends of the first through slot 704.
  • the advantage of this arrangement is that cutting along the center line of the first through slot 704 and the second through slot 705 obtains the camera module circuit board assembly shown in FIG. 17, and the four corners of the camera module circuit board 703 in FIG. They all appear as concave quarter arcs, that is, as concave chamfers 901.
  • the chamfering of the camera module circuit board can avoid knocking or scratching other parts, and can also avoid scratching the operator.
  • connection parts 706 are provided between two groups of adjacent camera module circuit board components, and each connection part 706 connects two opposite connectors to achieve the adjacent Connection of two sets of camera module circuit board components.
  • the connecting part is an easy-to-separate connecting part, which is convenient for separating the circuit board assembly of each group of camera modules.
  • the circuit board imposition 100 also includes at least two positioning holes, and the positioning holes are symmetrically distributed on the circuit Edge scrap area of panel imposition 100.
  • 4 positioning holes 708 may be included, as shown in FIG. 15, 4 positioning holes may be distributed in 4 top corner scrap areas of circuit board imposition 100, and 4 positioning holes may also be distributed in 4 of circuit board imposition 100 A waste area in the middle of the edge.
  • the circuit board imposition 100 provided in this embodiment further includes at least two mark points 709 that are used for positioning during imposition photo identification, which are disposed near the positioning holes and disposed at the edge scrap area of the circuit board imposition 100.
  • Table 1 shows the flatness of the circuit board imposition 100 provided in this embodiment
  • Table 2 shows the flatness of the circuit board imposition 100 provided by the background technology. Analysis of Table 1 and Table 2 shows that for any board length, The flatness of the circuit board imposition 100 provided in this embodiment is less than the flatness of the circuit board imposition 100 provided by the background technology. According to statistics, the flatness of the large imposition is lower than that of the conventional small imposition by 5-10 ⁇ m, which shows that The provided circuit board imposition 100 can improve the flatness of the circuit board.
  • Table 1 The flatness of the circuit board imposition 100 provided in this embodiment
  • the camera modules of the entire imposition are closely arranged, without the small imposition splicing area, and a larger number of camera modules of the same size can be arranged on the width of 250mm
  • the circuit board improves the utilization rate of the board and saves costs.
  • Another embodiment also provides a camera module, including a camera module circuit board.
  • the camera module circuit board is cut from the above circuit board imposition 100, that is, the camera module circuit board shown in FIG. 17, and the four corners of the camera module circuit board are all quarter circles
  • the concave chamfer 901 of the arc can significantly avoid scratching the installer when such a camera module circuit board is installed.
  • each component or each step can be decomposed and/or recombined.
  • decompositions and/or recombinations shall be regarded as equivalent solutions of this application.

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Abstract

本发明公开一线路板拼板及其制造方法和感光组件、摄像模组。该线路板拼板包括一线路板主体层,其中该线路板主体层具有多个线路板区域和多个第一间隔区域,其中该线路板区域间隔地横向排布,同排相邻的该线路板区域之间定义该第一间隔区域;和一阻焊油墨层,其中该阻焊油墨层被涂覆于该线路板主体层表面,其中该阻焊油墨层具有至少一引导槽,其中该引导槽位于该第一间隔区域,其中在该阻焊油墨层固化的过程中,该引导槽引导油墨释放应力。

Description

线路板拼板及其制造方法和感光组件、摄像模组 技术领域
本发明涉及摄像模组领域,更详而言之地涉及一具有引导槽的线路板拼板及其制造方法,便于降低线路板拼板的相邻线路板的间距,使得同尺寸线路板拼板可以排布更多的线路板区域,提高产出率,降低成本。
背景技术
随着智能手机的普及和发展,消费者对智能手机的性价比越来越看重。而摄像功能作为目前智能手机的必备功能之一,消费者对其要求也越来越高。这就使得摄像模组厂商不仅需要不断提高摄像模组性能和开发新技术,还需要降低成本,提高摄像模组的性价比。
在现有的摄像模组中,模塑技术是常用的摄像模组生产制造技术之一,例如MOC摄像模组(Molding On Chip)和MOB摄像模组(Molding On Board)。MOB摄像模组是使模塑基座仅形成于线路板的非芯片区域,即感光芯片的外侧区域;而MOC摄像模组是使模塑基座形成线路板表面和感光芯片的外部边缘区域。模塑过程中,上模具压合于线路板的预设位置,注入液化的模塑材料,并通过加热等方式使得模塑材料固化,形成摄像模组的模塑基座,也就是起到非模塑类摄像模组中镜座的作用。因此,在模塑工艺中,线路板拼版需要提供承载模塑流道的位置。具体地说,线路板拼板的各线路板区域的顶侧需要设置连续的横向流道,而同排中相邻的线路板区域需要设置纵向流道。且同排中相邻的线路板区域纵向流道的设置还需要考虑后续的切割工序。
目前,现有的模塑工艺中,同排中相邻的线路板区域间隔以在1mm以上。如果想要在同尺寸的线路板拼板排布更多的线路板区域,降低成本,则需要减少同排中相邻的线路板区域间隔。但是随之而来的问题是,同排中相邻的线路板区域间隔减小,无法为同排中相邻的线路板区域之间为含铜层提供布置空间。现有技术中,为了给线路板拼板的阻焊油墨层提供平整的设置表面,相邻的线路板区域的间隔区域中会设置含铜层,而且同排中相邻的线路板区域间隔较大,间隔区域中的含铜层两侧还可以为后续的切割工艺预留避让空间,如图1至图3所示。 因此现有技术的模塑工艺中,同排中相邻的线路板区域间需要切割两次才能分离,即分别在间隔区域中的含铜层两侧的预留避让空间各切割一次。
但是如果同排中相邻的线路板区域间隔较小,间隔区域中的含铜层两侧预留的避让空间也会较小,在切割过程中,切割刀很容易切到间隔区域中的含铜层。含铜层硬度较高,很难切割,不仅会磨损刀具,还会影响切割效率。同时,刀具切割含铜层的过程中会发热,进而可能影响各个线路板区域平整度乃至损伤电子元器件。
然而,如果相邻的线路板区域的间隔区域中不额外设置含铜层,阻焊油墨层在无含铜层的情况器固化,会出现开裂、翘起等情况。所以想要在同尺寸的线路板拼板排布更多的线路板区域,会遇到诸多问题需要解决。
手机摄像模组通常由线路板、镜头、感应器、连接器、电容、电阻等组成。生产时将感应器、连接器、镜头、电容、电阻等搭载或焊接在线路板上形成一个整体,便可实现手机摄像头模组摄像功能。
手机摄像模组线路板一般有FPC软性印刷线路板、PCB硬性印刷线路板和软硬结合印刷线路板。其制作工序包括切板、图形转移、表面黑化、排压板、x-ray钻标靶、修边等,厂商在批量生产线路板时,将一定尺寸的一整块大板材制作成阵列的线路板,可以方便实现生产的机械化,大大提高生产效率,也可以减少废料节约成本。如授权公告号为CN204810689U和CN202949639U的实用新型均公开了一种手机摄像模组线路板拼版结构,均是将数个摄像模组线路板拼成拼版进行生产。
摄像模组线路板组件包括线路板、连接带和连接器,其中,线路板一般为方形,多个铜层和绝缘层交错堆叠而成,其上集成有电容、电阻、二极管、三极管等电子元器件,线路板区域一般贴附有感光芯片,镜头置于感光芯片的感光路径上,形成摄像模组;连接器其上具有多个焊点,用于连接到手机等终端上,连接带一般为可弯折的柔性软板,用于连接线路板和连接器。
厂商在生产线路板拼版时,根据行业统一标准,线路板拼版一般是宽度为250mm,长度任意的整片材料,PCB之间互相连接。当整片板子作为一个整体承载PCB板时,由于PCB板之间是以狭窄的连接位连接,会将降低PCB的连接强度,进而会造成PCB板的弯曲,降低PCB板的平整度,不满足PCB板的公差管控要求。为了提升PCB板的连接强度和平整度,如附图14,现有技术中 将250mm宽的版子拆分为拼接在一起的小拼版101和小拼版102,小拼版101每一行能容纳多片线路板103,每片线路板103之间通过连接位104连接。小拼版101和小拼版102的拼接区域作为废料区域会造成板材的利用率不高。
发明内容
本发明的一个优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中所述线路板拼板中,同排相邻的线路板区域间隔相比于现有技术小,从而使得同尺寸的线路板拼板排布更多的线路板区域,提高产出率,降低成本。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中同排相邻的线路板区域间隔可以实现在0.3mm至0.4mm之间,且可以避免切到含铜层和阻焊油墨层固化时开裂翘起的问题。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中相比于现有技术,同排中相邻的线路板区域无需额外设置含铜层,也可以避免阻焊油墨层固化时开裂、翘起的问题。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中同排中相邻的线路板区域无需额外设置含铜层,从而可以避免切割工序中切割刀很容易切到间隔区域中的含铜层问题,进而避免切割工艺中发热问题,保持各个线路板区域平整度。
本发明的另一优势在于提供一种线路板拼板和及其制造方法和感光组件、摄像模组,其中所述线路板拼板在切割过程中可以避免产生热量损伤电子元器件,进而提高良品率。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中同排中相邻的线路板区域无需额外设置含铜层,从而对后续的切割工艺要求降低,提高了切割效率。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中同排中相邻的线路板区域的阻焊油墨层间设有应力引导槽,便于释放油墨固化时的应力,解决了油墨固化过程中开裂、翘起的问题。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,其中同排中相邻的线路板区域之间只需切一刀即可分离,相比于现有技术需要两次切割,提高切割效率。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,该摄像模组线路板拼版在保证线路板之间的连接强度和平整度的基础上,大大提升了线路板拼版的板材利用率。
本发明的另一优势在于提供一种线路板拼板及其制造方法和感光组件、摄像模组,该摄像模组中包含由摄像模组线路板拼版获得的摄像模组线路板,使得该摄像模组的安装过程中能够避免摄像模组线路板划伤操作人员。
为实现上述发明的优势,本发明提供以下技术方案:
一种线路板拼版,包括多个线路板单元,其中相邻的所述线路板单元之间设有通槽或者引导槽。
所述线路板拼版包括多组摄像模组线路板组件,每个摄像模组线路板组件包括方形的摄像模组线路板、连接器、以及连接摄像模组线路板和连接器的连接带,每组摄像模组线路板组件包括多个线路板单元,相邻两个线路板单元通过第一通槽连接;
每个线路板单元包括沿连接器的平行线对称分布的两个摄像模组线路板组件,两个摄像模组线路板组件通过第二通槽连接。
该摄像模组线路板拼版中,第一通槽和第二通槽材质为绝缘材料,是摄像模组线路板拼版的废料区域,该第一通槽和第二通槽起到连接相邻两个摄像模组线路板的作用,并增强了整个拼版的强度和平整度,使得整个拼版材料能满足公差管控的要求。
该摄像模组线路板拼版中,由于整拼版的摄像模组线路板紧密排布,没有了小拼版拼接区域,在250mm的宽度上能排布数量更多的同等大小的摄像模组线路板,提高了板材的利用率,节约了成本。
在另外一个实施方式中,所述第一通槽的中心设有通孔。所述第一通槽的两端设有两个半圆弧边。应用时,沿第一通槽和第二通槽的中线切割,获得单个摄像模组线路板组件,每个摄像模组线路板组件的摄像模组线路板的四个角均呈现为内凹的四分之一圆弧,即呈现为内凹倒角。这样安装时,摄像模组线路板的倒角能够避免磕碰或划伤其他零部件,也能避免划伤操作职员。
在另外一个实施方式中,所述第一通槽和第二通槽为导角槽。
在另外一个实施方式中,所述第一通槽和第二通槽的宽度至少大于切割所需宽度,以防止切割后的摄像模组线路板边缘漏出铜层防止短路。优选地,所述第 一通槽和第二通槽的宽度大于1mm。
所述第一通槽和第二通槽的槽深度为摄像模组线路板高度的1/5~1/3。
这样第一通槽与第二通槽大范围的连接方式极大地增强线路板之间的强度,所以极大提高了摄像模组线路板的平整度,对提升摄像模组的品质亦有帮助。经实际生产统计,大拼版平整度比常规小拼版平整度低5~10μm。
在上述实施方式中,相邻两组摄像模组线路板组件之间设有多个连接部,每个连接部连接相对的两个连接器,以实现对相邻两组摄像模组线路板组件的连接。该连接部为易分离连接部,方便分离每组摄像模组线路板组件。
在上述实施方式中,摄像模组线路板拼版还包括至少两个定位孔,其设置在所述摄像模组线路板拼版的边缘废料区域。定位孔主要用于将摄像模组线路板拼版固定在固定工装上,方便拼版的打孔、压头、切割等工序。
其中,所述定位孔对称分布在所述摄像模组线路板拼版的边缘废料区域。定位孔的对称分布可以提高摄像模组线路板拼版的固定稳定性。
在上述实施方式中,线路板拼版还包括至少两个用于拼版拍照识别时起定位作用的标记点,其设置在所述摄像模组线路板拼版的边缘废料区域。具体地,标记点可以靠近定位孔设置在摄像模组线路板拼版的边缘废料区域。
一种摄像模组,包括摄像模组线路板,所述摄像模组线路板由上述的摄像模组线路板拼版切割得到,所述摄像模组线路板的四个边角均为四分之一圆弧的内凹倒角。
该摄像模组中,由于摄像模组线路板的每个边角均为四分之一圆弧的内凹倒角,这样能够很好地避免摄像模组线路板划伤安装人员,也能够避免磕碰或划伤其他零部件。
为了实现以上至少另一优势,依本发明的一个方面,本发明进一步提供一种具有引导槽的线路板拼板,包括:
一线路板主体层,其中所述线路板主体层具有多个线路板区域和多个第一间隔区域,其中所述线路板区域间隔地横向排布,同排相邻的所述线路板区域之间定义所述第一间隔区域;和
一阻焊油墨层,其中所述阻焊油墨层被涂覆于所述线路板主体层表面,其中所述阻焊油墨层具有至少一引导槽,其中所述引导槽位于所述第一间隔区域,其中在所述阻焊油墨层固化的过程中,所述引导槽引导油墨释放应力。
根据本发明的一个实施例,位于所述第一间隔区域的所述引导槽呈长条状,从所述第一间隔区域的上边沿延伸至所述第一间隔区域的下边沿。
根据本发明的一个实施例,位于所述第一间隔区域的所述引导槽间隔地排布于所述第一间隔区域。
根据本发明的一个实施例,位于所述第一间隔区域的所述引导槽的周壁相对于所述线路板区域位于内侧。
根据本发明的一个实施例,位于所述第一间隔区域的所述引导槽的宽度不超过所述第一间隔区域的宽度,但不低于0.2mm。
根据本发明的一个实施例,所述第一间隔区域的宽度在0.3mm至0.4mm之间。
根据本发明的一个实施例,所述第一间隔区域被实施为绝缘间隔区域。
根据本发明的一个实施例,所述线路板拼板进一步具有至少一第二间隔区域,其中所述线路板区域间隔地阵列排布呈至少两排,其中同列相邻的所述线路板区域之间定义了所述第二间隔区域。
根据本发明的一个实施例,所述第二间隔区域设有所述引导槽。
根据本发明的一个实施例,位于所述第二间隔区域的所述引导槽呈长条状,从所述第二间隔区域一端延伸至其另一端。
根据本发明的一个实施例,设置于所述第二间隔区域的所述引导槽和设置于所述第二间隔区域的所述引导槽相连通。
根据本发明的一个实施例,位于所述第二间隔区域的所述引导槽间隔地排布于所述第二间隔区域。
根据本发明的一个实施例,位于所述第二间隔区域的所述引导槽的宽度不超过所述第二间隔区域的宽度,但不低于0.2mm。
根据本发明的一个实施例,所述第二间隔区域的宽度在0.3mm至0.4mm之间。
根据本发明的一个实施例,所述第一间隔区域和所述第二间隔区域被实施为绝缘间隔区域。
依本发明的另一个方面,本发明进一步提供一种线路板拼板,包括:
一线路板主体层,其中所述线路板主体层具有多个线路板区域和多个绝缘间隔区域,其中所述线路板区域间隔地横向排布,同排相邻的所述线路板区域之间 定义所述绝缘间隔区域;和
一阻焊油墨层,其中所述阻焊油墨层被涂覆于所述线路板主体层表面。
根据本发明的一个实施例,所述线路板区域间隔地阵列排布呈至少两排,其中同列相邻的所述线路板区域之间定义了所述绝缘间隔区域。
依本发明的另一个方面,本发明进一步提供一种线路板拼板制造方法,包括:
形成一线路板主体层,其中所述线路板主体层具有阵列排布的多个线路板区域和多个间隔区域,其中所述间隔区域间隔相邻的所述线路板区域;
印刷一阻焊油墨层于所述线路板主体层外表面,其中所述阻焊油墨层具有多个引导槽,其中所述引导槽位于所述间隔区域;和
固化所述阻焊油墨层,其中所述引导槽引导所述阻焊油墨层释放应力。
根据本发明的一个实施例,所述间隔区域被实施为绝缘间隔区域。
依本发明的另一个方面,本发明进一步提供一种感光组件,包括:
一线路板,其中所述线路板具有一线路主体层和一油墨层,其中所述油墨层覆盖于所述线路主体层表面,其中所述油墨层的边沿位于所述线路主体层的含铜层的边沿外侧;
一感光芯片,其中所述感光芯片电连接地贴附于所述线路板的表面;和
一模塑基座,其中所述模塑基座采用模塑工艺封装所述感光芯片于所述线路板表面。
根据本发明的一个实施例,所述模塑基座具有一底部边沿部,其中所述底部边沿部相对于所述模塑基座底部凸起,位于所述油墨层的外侧,包覆所述油墨层的部分边沿。
依本发明的另一个方面,本发明进一步提供一种摄像模组,包括:
一如上所述的感光组件;和
一光学组件,其中所述光学组件被支撑于所述感光组件的顶侧,对应于所述感光组件的感光路径。
依本发明的另一个方面,本发明进一步提供一种感光组件,包括:
一线路板,其中所述线路板包括一线路主体层和一油墨层,其中所述油墨层覆盖于所述线路主体层表面,其中所述线路板主体层具有至少两个线路板区域和一间隔区域,其中所述相邻的所述线路板区域的之间定义所述间隔区域,其中所述油墨层于所述间隔区域设有至少一引导槽;
至少两感光芯片,其中每个所述线路板区域对应的电连接对应的所述感光芯片;和
一模塑基座,其中所述模塑基座采用模塑工艺封装多个所述感光芯片于线路板的表面,并填充所述引导槽。
依本发明的另一个方面,本发明进一步提供一种摄像模组,包括:
一如上所述的感光组件;和
至少两光学组件,其中所述光学组件被支撑于所述感光组件的顶侧,对应于所述感光组件的感光路径。
本发明的有益效果表现在:
本发明提供的线路板拼版利用第一通槽和第二通槽将摄像模组线路板组件紧密排布于整个拼版上,在保证线路板之间的连接强度和平整度的基础上,大大提升了线路板拼版的板材利用率。
本发明提供的摄像模组中包含有由摄像模组线路板拼版切割得到的摄像模组线路板,在摄像模组安装过程中,该摄像模组线路板的四分之一圆弧的内凹倒角能够显著避免摄像模组线路板边角划伤安装人员。
附图说明
图1是和本发明相关的现有技术中一线路板拼版的俯视图。
图2是上述现有技术的线路板拼版的部分放大图。
图3是上述现有技术的线路板拼版的沿B-B方向的局部截面图。
图4A是根据本发明的一实施例的线路板拼版俯视图。
图4B是根据本发明的上述实施例的线路板拼版的局部放大图。
图4C是根据本发明的上述实施例的线路板拼版的局部放大图的立体图。
图4D是根据本发明的上述实施例的线路板拼版的沿D-D方向的局部截面图。
图5是根据本发明的一线路板拼版的一线路板主体层的结构示意图。
图6A是根据本发明的上述实施例的变形实施例的线路板拼版的局部俯视图。
图6B是根据本发明的上述变形实施例的线路板拼版的局部立体图。
图7是根据本发明的另一实施例的线路板拼版俯视图。
图8A是根据本发明的上述另一实施例的线路板拼版的局部放大图。
图8B是根据本发明的上述另一实施例的线路板拼版沿F-F方向的截面图。
图8C是根据本发明的上述另一实施例的线路板拼版沿G-G方向的截面图。
图8D是根据本发明的上述另一实施例的线路板拼版的局部立体图。
图9A是根据本发明的上述另一实施例的变形实施例的线路板拼版的局部俯视图。
图9B是根据本发明的上述另一实施例的变形实施例的线路板拼版的局部立体图。
图10是根据本发明的一实施例的一感光组件的立体图。
图11A是根据本发明的上述实施例的所述感光组件的截面图。
图11B是根据本发明的一摄像模组的截面图。
图12A是根据本发明的一双摄摄像模组的一感光组件的截面图。
图12B是根据本发明的一双摄摄像模组的截面图。
图13是根据本发明的一线路板拼版的制造方法流程图。
图14是背景技术中摄像模组线路板拼版的结构示意图。
图15是根据本发明的第一变形实施例提供的线路板拼版的结构示意图。
图16是根据本发明的第一变形实施例提供的摄像模组线路板的结构示意图。
图17是根据本发明的第一变形实施例提供的摄像模组线路板组件的结构示意图。
具体实施方式
以下描述用于揭露本发明以使本领域技术人员能够实现本发明。以下描述中的优选实施例只作为举例,本领域技术人员可以想到其他显而易见的变型。在以下描述中界定的本发明的基本原理可以应用于其他实施方案、变形方案、改进方案、等同方案以及没有背离本发明的精神和范围的其他技术方案。
本领域技术人员应理解的是,在本发明的揭露中,术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系是基于附图所示的方位或位置关系,其仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此上述术语不能理解为对本发明的限制。
可以理解的是,术语“一”应理解为“至少一”或“一个或多个”,即在一 个实施例中,一个元件的数量可以为一个,而在另外的实施例中,该元件的数量可以为多个,术语“一”不能理解为对数量的限制。
如图4A至图4D所示,其阐述了本发明的一较佳实施例的线路板拼板。所述线路板拼板100包括一线路板主体层110和一阻焊油墨层120。所述阻焊油墨层120被涂覆于所述线路板主体层110表面,形成一层保护膜层,进而构成所述线路板拼板100。
所述线路板主体层110是线路板所需的信号层、含铜层和绝缘层等按照一定顺序叠层设置的线路板主体。例如,所述线路板主体层110可以被实施为信号层分别设置于最上层和最底层,而多个含铜层和多个绝缘层在两层信号层之间交替设置,如图5所示。
值得一提的是,此处所提信号层、含铜层和绝缘层并不是限制,只是为了阐述明了。所述线路板主体层110还可以包括其他功能层,例如定义走线规划板框大小的机械层。也就是说,所述线路板主体层110的结构和设计本发明并不限制,本领域技术人员可以采用其所知的叠层方式实现所述线路板主体层100的结构。
所述阻焊油墨层120被涂覆于所述线路板主体层110表面。所述阻焊油墨层120可以实现有选择地掩蔽导线,使图形不受损伤,在阻焊时不发生短路。同时所述阻焊油墨层120的成膜物质可以具有耐化学药品性、耐溶剂性、耐热性、绝缘性良好,有防潮、防盐雾的功能,防止焊锡黏附在不需要的部分,防止铜对焊锡槽的污染等。
具体地,所述阻焊油墨层120可以通过丝网印刷、凹版印刷、喷墨打印等方式将阻焊油墨涂布于所述线路板主体层110表面,后经过固化处理形成所述阻焊油墨层120。例如,在排布完线路的所述线路板主体层110的表面,以丝印或在负片上滚涂的方式,在所述线路板主体层110外表面印刷出特定图案的油墨。然后通过曝光等方式将油墨固化。固化的油墨保护线路不受损伤,在阻焊时不发生短路。
进一步,所述线路板主体层110具有多个线路板区域130和多个第一间隔区域140。所述线路板区域130间隔地横向排布于所述线路板拼板100,同排相邻的所述线路板区域130之间定义所述第一间隔区域140。具体地,所述线路板拼板100包括和对应的线路板区域130电连接的多个连接器160。所述连接器160从对应的所述线路板区域130向外侧延伸。在本实施例中,所述线路板拼板在列 方向上呈首尾相邻。即上一排线路板拼板的连接器160和下一排的线路板拼板的线路板区域130相接或相近。
也就是说,在本发明的较佳实施例中,所述线路板区域130和所述第一间隔区域140相互间隔地排布。所述线路板区域130对应于所述线路板主体层110的排线区域(即线路板主体层110中的信号层、含铜层和绝缘层等所排布的区域),当所述线路板拼板100被切割后,所述线路板区域130形成对应的线路板单体。所述第一间隔区域140对应于所述线路板主体层110的非排线区域(即线路板主体层110中未排设信号层、含铜层和绝缘层),可以用于切割。也就是说,沿着所述第一间隔区域140切割,所述线路板区域130可以对应形成线路板单体。
在现有技术中,所述阻焊油墨层连续地铺排于所述线路板主体层的表面。即连续地覆盖于所述线路板区域和所述间隔区域。为了使得油墨固化良好,现有技术在所述线路板主体层在间隔区域设有含铜层,使得阻焊油墨在铜层上固化,铜的韧性较好,起到压实、防翘起开裂的功能,如图所示。这些设置得益于现有技术中间隔区域的尺寸较大,一般至少1mm。不仅可以为含铜层提供布置空间,也可以在含铜层两侧为切割区域预留空间,如前文所述,此处不再赘述。
而本发明中,为了使得同尺寸的线路板拼板排布更多的线路板区域,提高产出率,降低成本。本发明中同排相邻的线路板区域间隔相比于现有技术小。优选地,同排相邻的线路板区域间隔可以实现在0.3mm至0.4mm之间,且可以避免切到含铜层和阻焊油墨层固化时开裂翘起的问题。
具体地,在本发明的较佳实施例中,所述第一间隔区域140的宽度W 1在0.3mm至0.4mm之间,且无需于所述线路板主体层的间隔区域设有含铜层。即本发明中的所述第一间隔区域140被实施为绝缘间隔区域,由绝缘层铺设而成。
所述阻焊油墨层120具有至少一引导槽121,用于在阻焊油墨固化时引导油墨释放应力,防止翘起和开裂。所述引导槽121位于所述第一间隔区域140,即相邻的所述线路板区域130之间。优选地,所述第一间隔区域140的宽度W 1为0.33mm。
在本发明的较佳实施例中,所述引导槽121呈长条状,从所述第一间隔区域140的上边沿延伸至所述第一间隔区域140的下边沿。优选地,所述引导槽121的宽度W 2不超过所述第一间隔区域140的宽度W 1,但W 2不低于0.2mm。
如图4D所示,为所述线路板拼板100于第一间隔区域140及其周部的截面 图。在本实施例中,所述引导槽121的形成使得所述线路板拼板100的绝缘层裸露。以趋向于第一间隔区域140中心的方向为向内,从该第一间隔区域140趋向于其两侧的线路板区域130的方向为向外进行说明。在本发明中,所述引导槽121的周壁对于所述线路板区域130位于内侧。也就是说,在本发明的较佳实施例中,所述引导槽121将所述阻焊油墨层120间隔成多个阻焊油墨区域122。所述阻焊油墨区域122覆盖对应的线路板区域130和相邻的所述第一间隔区域140的外部边沿。或者说,所述阻焊油墨区域122的边沿位于所述线路板区域130的边沿外侧,位于所述第一间隔区域140的内侧。
当然,所述引导槽121也可以被实施为其他形状和尺寸,例如,所述引导槽121呈圆柱体形、圆台形、横截面为梯形等等,或者多个所述引导槽121间隔地设置于所述第一间隔区域140,如图6A和图6B所示,此处本发明并不限制。
所述引导槽121的形成可以通过对丝网印刷、凹版印刷、喷墨打印中印刷版的预先设计,避免在所述引导槽121的预设位置印刷油墨。而所忽视引导槽121的形状和尺寸也可以通过调整或改变印刷版实现。
之后,多个感光芯片200和一系列电子元器件300分别被安装于各个所述线路板区域130。模塑时,安装有所述感光芯片200和所述电子元器件300的所述线路板拼板100置于一下模具,一上模具压合于线路板区域的预设位置,注入液化的模塑材料。模塑材料通过对应于所述间隔区域的流道流通,填充至预设位置。通过加热等方式使得模塑材料固化,形成模塑基座。切割时,切割刀片沿着所述第一间隔区域140分离同排相邻的所述线路板区域130,形成多个感光组件。优选地,切割刀片可以沿着所述引导槽121切割。刚切割所得的感光组件中,其对应的所述阻焊油墨区域122的边沿仍位于所述线路板区域130的边沿外侧。然后,可以进一步将多余的部分切除,缩小感光组件尺寸。
所以,由于所述第一间隔区域140并未设置含铜层,切割过程中就无需担心会切割刀含铜层,进而就不会发热,保护了电子元器件的同时,也提高了切割效率。而且,相比于现有技术,需要避让位于间隔区域的含铜层,同排相邻的所述线路板区域130之间需要切割两刀才能完全分离,本发明中同排相邻的所述线路板区域130之间只需要切割一刀即可完全分离,无需避让含铜层,提高了切割效率。
如图7至图8D所示,其阐述了本发明的另一实施例的具有引导槽的线路板 拼板。在本实施例中,线路板拼板100A包括一线路板主体层110A和一阻焊油墨层120A。所述阻焊油墨层120A被涂覆于所述线路板主体层110A表面。
和上述实施例不同的是,所述线路板拼板100A具有多个线路板区域130A、多个第一间隔区域140A和第二间隔区域150A。所述线路板区域130A间隔地阵列排布于所述线路板拼板100A,排布成两排。同排相邻的所述线路板区域130A之间定义所述第一间隔区域140A,同列相邻的所述线路板区域130A之间定义了所述第二间隔区域150A。所述第一间隔区域140A和所述第二间隔区域150A相接,对应于模塑时的流道。所述第一间隔区域140A位于所述第二间隔区域140A的两侧。在本实施例中,在本实施例中,所述线路板拼板在列方向上呈头对头相邻。即和对应的线路板区域130A电连接的多个连接器160A分别从所述线路板拼板100A的两侧向外延伸。上一排线路板拼板的线路板区域130A和下一排的线路板拼板的线路板区域130A相近。
在本实施例中,所述阻焊油墨层120A除了在所述第一间隔区域140A设有对应的引导槽121A,在所述第二间隔区域150A也设有对应的引导槽121A。设置于所述第一间隔区域140A的引导槽121A可以用于释放位于第一间隔区域140A的油墨固化时产生的应力。设置于所述第二间隔区域150A的引导槽121可以用于释放位于所述第二间隔区域150A的油墨固化时产生的应力。
优选地,所述引导槽121A呈长条状。优选地,设置于所述第二间隔区域150A的所述引导槽121和设置于所述第二间隔区域150A的所述引导槽121A相连通。具体地,对于所述线路板拼板100A的上排来说,设置于所述第一间隔区域140A的所述引导槽121A可以从所述第一间隔区域140A上边沿延伸至于所述第二间隔区域150A的上边沿。对于所述线路板拼板100A的下排来说,设置于所述第一间隔区域140A的所述引导槽121A可以从所述第二间隔区域150A的下边沿延伸至所述第一间隔区域140A下边沿。设置于所述第二间隔区域150A的所述引导槽121A从所述第二间隔区域150A一端延伸至另一端。
或者,本领域技术人员可以知道的是,所述引导槽121A可以间断地设置于所述第二间隔区域150A,如图9A和图9B所示。所述引导槽121A也可以间断地设置于所述第二间隔区域150A。设置于所述第二间隔区域150A的所述引导槽121A和设置于所述第二间隔区域150A的所述引导槽121A也可以不相接或不相同。进一步,所述引导槽121A也可以被实施为其他形状和尺寸,例如,所 述引导槽121A呈圆柱体形、圆台形、横截面为梯形等等,或者多个所述引导槽121A间隔地设置于所述第一间隔区域140A或所述第二间隔区域150A,此处本发明并不限制。
具体地,在本实施例中,所述第一间隔区域140A的宽度W 1和所述第二间隔区域150A的宽度W 3在0.3mm至0.4mm之间,且均无需于所述线路板主体层的间隔区域设有含铜层。即在本实施例中,所述第一间隔区域140A和所述第二间隔区域150A均被实施为绝缘间隔区域,由绝缘层铺设而成。
优选地,所述第一间隔区域140A的宽度W 1和所述第二间隔区域150A的宽度W 3为0.33mm。对应地,设置于所述第一间隔区域140A的所述引导槽121A宽度W 2不超过所述第一间隔区域140A的宽度W 1,但W 2不低于0.2mm。设置于所述第二间隔区域150A的所述引导槽121A的宽度W 2不超过所述第二间隔区域150A的宽度W 3,但W 2不低于0.2mm。
如图8B所示,为所述线路板拼板100A于F-F方向上的界面图,显示了第一间隔区域140A及其周部的截面图。和上一实施类似,第一间隔区域140A的所述引导槽121A的形成使得所述线路板拼板100A于第一间隔区域140A裸露绝缘层。以趋向于第一间隔区域140A中心的方向为向内,从该第一间隔区域140A趋向于其两侧的线路板区域130A的方向为向外进行说明。在本实施例中,所述引导槽121A的周壁对于所述线路板区域130A位于内侧。也就是说,在本发明的较佳实施例中,所述引导槽121A将所述阻焊油墨层120A间隔成多个阻焊油墨区域122A。所述阻焊油墨区域122A覆盖对应的线路板区域130A和相邻的所述第一间隔区域140A的外部边沿。或者说,所述阻焊油墨区域122A的边沿位于所述线路板区域130A的边沿外侧,位于所述第一间隔区域140A的内侧。
如图8C所示,为所述线路板拼板100A于G-G方向上的界面图,显示了第二间隔区域150A及其周部的截面图。在本实施例中,第二间隔区域150A的所述引导槽121A的形成使得所述线路板拼板100A于第二间隔区域150A也裸露绝缘层。以趋向于第二间隔区域150A中心的方向为向内,从该第二间隔区域150A趋向于其两侧的线路板区域130A的方向为向外进行说明。在本实施例中,所述引导槽121A的周壁相对于所述线路板区域130A位于内侧。所述阻焊油墨区域122A覆盖对应的线路板区域130A和相邻的所述第二间隔区域150A的外部边沿。或者说,所述阻焊油墨区域122A的边沿位于所述线路板区域130A的 边沿外侧,位于所述第二间隔区域150A的内侧。
之后,多个感光芯片200和一系列电子元器件300分别被安装于各个所述线路板区域130。模塑时,安装有所述感光芯片200和所述电子元器件300的所述线路板拼板100置于一下模具,一上模具压合于线路板区域的预设位置,注入液化的模塑材料。模塑材料通过对应于所述第一间隔区域和所述第二间隔区域的流道流通,填充至预设位置。通过加热等方式使得模塑材料固化,形成模塑连体基座。
在本实施例中,切割时,切割刀片或激光沿着所述第一间隔区域140A分离同排相邻的所述线路板区域130A,沿所述第二间隔区域150A分离同列相邻的所述线路板区域130A,形成多个感光组件。优选地,切割刀片可以沿着所述引导槽121A切割。刚切割所得的感光组件中,其对应的所述阻焊油墨区域122A的边沿仍位于所述线路板区域130A的边沿外侧。然后,可以进一步将多余的部分切除,缩小感光组件尺寸。
也就是说,对于刚切割所得的感光组件包括一线路板400、所述感光芯片200、一系列所述电子元器件300和一模塑基座500。所述感光芯片200和所述电子元器件300可通信地贴附于所述线路板400。所述模塑基座500通过模塑工艺封装所述感光芯片200和所述电子元器件300于所述线路板400,可以形成MOB或MOC摄像模组。所述模塑基座500具有对应于所述感光芯片200的一光窗520。所述线路板400由上述线路板拼板100经切割所得,也就是说,所述线路板400具有一线路主体层410和一油墨层420。所述线路主体层410经所述线路板拼板100的线路板主体层110切割所得,所述油墨层420经所述线路板拼板100的阻焊油墨层110切割所得。对应地,所述油墨层420覆盖于所述线路主体层410表面。所述油墨层420的边沿位于所述线路主体层410的含铜层的边沿外侧,如图10和图11A所示。
进一步,模塑过程中,模塑材料会填充所述引导槽121,即固化模塑材料成型后的模塑连体基座填充所述引导槽121。切割后,尤其是沿着所述引导槽121切割后,所得的感光组件中,所述模塑基座500的底部边沿部510和线路板400的线路主体层410上表面接触。所述底部边沿部510相对于所述模塑基座500底部凸起,且所述底部边沿部510的高度和所述引导槽121的深度相同。并且所述底部边沿部510位于所述油墨层420的外侧,包覆所述油墨层420的部分边沿。
本发明进一步提供一摄像模组,如图11B所示。所述摄像模组包括所述感光组件和一光学组件600,其中所述光学组件被支撑于所述感光组件的顶侧,对应于所述感光组件的感光路径。所述光学组件600可以是一组光学镜片组,可以是马达和光学镜片组,从而组成定焦摄像模组或动焦摄像模组,本发明并不限制。
值得一提的是,本发明的所述线路板拼板100也适合用于生产多摄摄像模组,如图12A和图12B。即切割时,使用激光切割或刀片切割,将线路板拼板100切割成具有至少两个所述线路板区域的130的多个线路板400,其中相邻的所述线路板区域的130之间定义一间隔区域(所述第一间隔区域或所述第二间隔区域的部分)。所述油墨层420被涂覆于所述线路板400的线路主体层410的表面,并于所述间隔区域设有所述引导槽121。切割所得的所述线路板电连接多个所述感光芯片200和多个所述电子元器件300,且切割后所述的模塑基座500覆盖线路板400的表面,并填充所述引导槽121。所述模塑基座500具有对应于所述感光芯片200的至少两光窗520
以双摄摄像模组为例,切割所得的线路板400具有相邻的两所述线路板区域的130,其中每个线路板区域对应的电连接对应的所述感光芯片200和所述电子元器件300。相邻的两所述线路板区域的130之间定义一间隔区域,所述油墨层420于所述间隔区域设有引导槽。所述模塑基座500于线路板400的表面,封装所述感光芯片200和所述电子元器件300,并且填充相邻两所述线路板区域的130之间的所述引导槽121。
进一步,多摄摄像模组中,尤其是当沿着所述引导槽121切割所得,所述模塑基座500的底部边沿部510和线路板400的线路主体层410的上表面接触。并且所述底部边沿部510位于所述油墨层420的外侧,包覆所述油墨层420的部分边沿。所述底部边沿部510从所述模塑基座500底部凸出,其高度和所述引导槽121深度相同。
多个光学组件600被对应的支撑于多摄摄像模组的感光组件顶侧,分别对应于对应的感光芯片的感光路径。
根据本发明的另一方面,本发明进一步提供一线路板拼版制造方法,可以用于以上线路板拼版的制造,以实现本发明的目的和优势,如图13所示。
步骤610:形成一线路板主体层,其中所述线路板主体层具有阵列排布的多个线路板区域和多个间隔区域,其中所述间隔区域间隔相邻的所述线路板区域。
所述线路板主体层的形成可以采用多种方法,本发明并不限制。例如,将内层基板经裁切、磨边、磨刷和除尘等前处理工艺处理后,压上干膜。将预设的底片贴合于干膜,使用光照射进行曝光处理。然后可以使用1%Na 2CO 3加压2.5kg/cm 2冲洗,实现显影。利用酸性蚀刻液,以被曝光的干膜作为阻剂,蚀刻铜。利用强碱,例如5%NaOH浸泡去除,将聚合的油墨冲洗,实现去膜步骤,显示所需图样的铜层。对应的,在本步骤中,相比于现有技术,无需在间隔区域设置铜层。且间隔区域的宽度可以进一步缩小。优选地,所述间隔区域的宽度在0.3mm至0.4mm。
步骤620:印刷一阻焊油墨层于所述线路板主体层外表面,其中所述阻焊油墨层具有多个引导槽,其中所述引导槽位于所述间隔区域。
阻焊油墨层的印刷可以采用丝网印刷、凹版印刷、喷墨打印等印刷技术。所述引导槽优选为长条状,贯穿所述间隔区域。优选地,所述引导槽的宽度至少为0.2mm。所述引导槽的宽度小于所述间隔区域的宽度。
步骤630:固化所述阻焊油墨层,其中所述引导槽引导所述阻焊油墨层释放应力。
步骤640:电连接感光芯片和\或电子元器件,于对应的线路板区域。
步骤650:采用模塑工艺,封装所述感光芯片和\或电子元器件,形成感光组件拼板。
步骤660:沿所述间隔区域切割所述感光组件拼板,形成多个感光组件。
此时,由于本发明中所述间隔区域为绝缘间隔区域,在间隔区域中不设有含铜层,每个间隔区域只需一次切割。相比于现有需要避让含铜层两次切割,效率更高。
如图15所示,本发明的第一变形实施例提供的线路板拼版100包括多组摄像模组线路板组件700,每个摄像模组线路板组件700包括摄像模组线路板703、连接器701、连接摄像模组线路板703和连接器701的连接带702。每组摄像模组线路板组件包括多个线路板单元,相邻两个线路板单元通过第一通槽704连接,每个线路板单元包括沿连接器701的平行线对称分布的两个摄像模组线路板组件,两个摄像模组线路板组件通过第二通槽705连接。
本实施例提供的线路板拼版100为整拼版制作而成,藉由一宽为250mm长度任意的基板,在其上设置多个铜层、绝缘层、覆盖膜等,形成多层线路板,其 中铜层只在所述阵列的摄像模组线路板703、连接带702与连接器701区域布设所需电路,整拼版中第一通槽704与第二通槽705区域不包含铜层,从而形成拼版的所述摄像模组线路板组件,且每个所述摄像模组线路板组件之间电气隔断。
在整块板材上形成阵列的所述摄像模组线路板单元后,由于所述摄像模组线路板单元具有多个部件,故整块板材上阵列的摄像模组组件势必会留下一部分余料区710,在形成阵列的摄像模组线路板组件后,需要去掉多余的余料区,可使用压头、铣刀、锉刀等工艺。其次,所述摄像模组线路板组件之间的第一通槽704与第二通槽705作为后续所述线路板拼版100切割成单个摄像模组线路板组件时切割区域,由于所述第一通槽704与所述第二通槽705不包含硬度较大的铜层,故切割所述线路板拼版100时变得容易且不易磨损刀具。应理解的是,所述摄像模组线路板组件的线路板层数不受限制,由具体产品的电气设计所决定。
如图16所示,摄像模组线路板703实际上是由铜层801、803、805、807和绝缘层802、804、806交错层叠而成。在制备过程中,两个摄像模组线路板之间不镀铜,即摄像模组线路板之间仅镀绝缘层802、804、806形成一个由镀绝材料构成的通槽,该通槽刚好作为连接部件连接相邻的摄像模组线路板,由于该通槽的面积较大,因此增强了整个拼版的强度和平整度,使得整个拼版材料能满足公差管控的要求。
具体地,第一通槽704和第二通槽705为倒角槽,宽度至少大于切割所需宽度,以防止切割后的摄像模组线路板边缘漏出铜层防止短路,具体地,第一通槽704和第二通槽705的宽度大于1mm,槽深度为摄像模组线路板高度的1/5~1/3。该第一通槽704和第二通槽705作为连接部件极大地增强线路板之间的强度,所以极大提高了摄像模组线路板的平整度,进而也能提升摄像模组的品质。
如图14所示的拼版上的摄像模组线路板被切下来后,摄像模组线路板的拐角处会留下90°棱角,安装时,摄像模组线路板的90°棱角会磕碰或划伤其他零部件,还很有可能会划伤操作职员。
为了解决这个问题,本实施例提供的线路板拼版100中,第一通槽704的中心设有通孔707,第一通槽704的两端设有两个半圆弧边。这样设置的好处在于,沿第一通槽704和第二通槽705的中线切割,获得如图17所示的摄像模组线路板组件,图17中的摄像模组线路板703的四个角均呈现为内凹的四分之一圆弧,即呈现为内凹倒角901。这样安装时,摄像模组线路板的倒角能够避免磕碰或划 伤其他零部件,也能避免划伤操作职员。
在本实施例提供的线路板拼版100中,相邻两组摄像模组线路板组件之间设有多个连接部706,每个连接部706连接相对的两个连接器,以实现对相邻两组摄像模组线路板组件的连接。该连接部为易分离连接部,方便分离每组摄像模组线路板组件。
为了稳定地将模组线路板拼版固定在固定工装上,以方便对拼版进行打孔、压头、切割等操作,线路板拼版100还包括至少两个定位孔,定位孔对称分布在所述线路板拼版100的边缘废料区域。具体地,可以包括4个定位孔708,如图15所示,4个定位孔可以分布在线路板拼版100的4个顶角废料区域,4个定位孔还可以分布在线路板拼版100的4个边缘中间废料区域。
本实施例提供的线路板拼版100,还包括至少两个用于拼版拍照识别时起定位作用的标记点709,其设置在靠近定位孔设置在线路板拼版100的边缘废料区域。
表1给出了本实施例提供的线路板拼版100的平整度,表2给出了背景技术提供的线路板拼版100的平整度,分析表1和表2可得,针对任意一个板长,本实施例提供的线路板拼版100的平整度均小于背景技术提供的线路板拼版100的平整度,经统计,大拼版平整度比常规小拼版平整度低5~10μm,由此可见,本发明提供的线路板拼版100能够提高线路板的平整度。
表1 本实施例提供的线路板拼版100的平整度
Figure PCTCN2019113346-appb-000001
Figure PCTCN2019113346-appb-000002
表2 背景技术提供的线路板拼版100的平整度
Figure PCTCN2019113346-appb-000003
Figure PCTCN2019113346-appb-000004
此外,本实施例提供的线路板拼版100中,整拼版的摄像模组线路板紧密排布,没有了小拼版拼接区域,在250mm的宽度上能排布数量更多的同等大小的 摄像模组线路板,提高了板材的利用率,节约了成本。
另外一个实施例还提供了一种摄像模组,包括摄像模组线路板。具体地,该摄像模组线路板是由上述线路板拼版100切割得到,即如图17所示的摄像模组线路板,该摄像模组线路板的四个边角均为四分之一圆弧的内凹倒角901,这样的摄像模组线路板在被安装时能够显著避免划伤安装人员。
以上结合具体实施例描述了本申请的基本原理,但是,需要指出的是,在本申请中提及的优点、优势、效果等仅是示例而非限制,不能认为这些优点、优势、效果等是本申请的各个实施例必须具备的。另外,上述公开的具体细节仅是为了示例的作用和便于理解的作用,而非限制,上述细节并不限制本申请为必须采用上述具体的细节来实现。
本申请中涉及的器件、装置、设备、系统的方框图仅作为例示性的例子并且不意图要求或暗示必须按照方框图示出的方式进行连接、布置、配置。如本领域技术人员将认识到的,可以按任意方式连接、布置、配置这些器件、装置、设备、系统。诸如“包括”、“包含”、“具有”等等的词语是开放性词汇,指“包括但不限于”,且可与其互换使用。这里所使用的词汇“或”和“和”指词汇“和/或”,且可与其互换使用,除非上下文明确指示不是如此。这里所使用的词汇“诸如”指词组“诸如但不限于”,且可与其互换使用。
还需要指出的是,在本申请的装置、设备和方法中,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应视为本申请的等效方案。
提供所公开的方面的以上描述以使本领域的任何技术人员能够做出或者使用本申请。对这些方面的各种修改对于本领域技术人员而言是非常显而易见的,并且在此定义的一般原理可以应用于其他方面而不脱离本申请的范围。因此,本申请不意图被限制到在此示出的方面,而是按照与在此公开的原理和新颖的特征一致的最宽范围。
为了例示和描述的目的已经给出了以上描述。此外,此描述不意图将本申请的实施例限制到在此公开的形式。尽管以上已经讨论了多个示例方面和实施例,但是本领域技术人员将认识到其某些变型、修改、改变、添加和子组合。

Claims (37)

  1. 一线路板拼版,其特征在于,包括多个线路板单元,其中相邻的所述线路板单元之间设有通槽或者引导槽。
  2. 根据权利要求1所述的线路板拼板,其特征在于,包括:
    一线路板主体层,其中所述线路板主体层具有多个线路板区域和多个第一间隔区域,其中所述线路板区域间隔地横向排布,同排相邻的所述线路板区域之间定义所述第一间隔区域;和
    一阻焊油墨层,其中所述阻焊油墨层被涂覆于所述线路板主体层表面,其中所述阻焊油墨层具有至少一所述引导槽,其中所述引导槽位于所述第一间隔区域,其中在所述阻焊油墨层固化的过程中,所述引导槽引导油墨释放应力。
  3. 根据权利要求2所述的线路板拼板,其中位于所述第一间隔区域的所述引导槽呈长条状,从所述第一间隔区域的上边沿延伸至所述第一间隔区域的下边沿。
  4. 根据权利要求2所述的线路板拼板,其中位于所述第一间隔区域的所述引导槽间隔地排布于所述第一间隔区域。
  5. 根据权利要求2所述的线路板拼板,其中位于所述第一间隔区域的所述引导槽的周壁相对于所述线路板区域位于内侧。
  6. 根据权利要求2所述的线路板拼板,其中位于所述第一间隔区域的所述引导槽的宽度不超过所述第一间隔区域的宽度,但不低于0.2mm。
  7. 根据权利要求2至5任一所述的线路板拼板,其中所述第一间隔区域的宽度在0.3mm至0.4mm之间。
  8. 根据权利要求2至5任一所述的线路板拼板,其中所述第一间隔区域被实施为绝缘间隔区域。
  9. 根据权利要求2至5任一所述的线路板拼板,其中所述线路板拼板进一步具有至少一第二间隔区域,其中所述线路板区域间隔地阵列排布呈至少两排,其中同列相邻的所述线路板区域之间定义了所述第二间隔区域。
  10. 根据权利要求9所述的线路板拼板,其中所述第二间隔区域设有所述引导槽。
  11. 根据权利要求10所述的线路板拼板,其中位于所述第二间隔区域的所述引导槽呈长条状,从所述第二间隔区域一端延伸至其另一端。
  12. 根据权利要求10所述的线路板拼板,其中设置于所述第二间隔区域的所述引导槽和设置于所述第二间隔区域的所述引导槽相连通。
  13. 根据权利要求10所述的线路板拼板,其中位于所述第二间隔区域的所述引导槽间隔地排布于所述第二间隔区域。
  14. 根据权利要求10所述的线路板拼板,其中位于所述第二间隔区域的所述引导槽的宽度不超过所述第二间隔区域的宽度,但不低于0.2mm。
  15. 根据权利要求10所述的线路板拼板,其中所述第二间隔区域的宽度在0.3mm至0.4mm之间。
  16. 根据权利要求9所述的线路板拼板,其中所述第一间隔区域和所述第二间隔区域被实施为绝缘间隔区域。
  17. 根据权利要求1所述的线路板拼版,其中所述线路板拼版包括多组摄像模组线路板组件,每个摄像模组线路板组件包括方形的摄像模组线路板、连接器、以及连接摄像模组线路板和连接器的连接带,其中每组摄像模组线路板组件包括所述线路板单元,相邻两个线路板单元通过第一通槽连接,每个线路板单元包括沿连接器的平行线对称分布的两个摄像模组线路板组件,两个摄像模组线路板组件通过第二通槽连接。
  18. 根据权利要求17所述的线路板拼版,其中所述第一通槽的中心设有通孔。
  19. 根据权利要求17所述的线路板拼版,其中所述第一通槽的两端设有两个半圆弧边。
  20. 根据权利要求17所述的线路板拼版,其中所述第一通槽和第二通槽为导角槽。
  21. 根据权利要求17所述的线路板拼版,其中所述第一通槽和第二通槽的宽度大于1mm。
  22. 根据权利要求17所述的线路板拼版,其中所述第一通槽和第二通槽的槽深度为摄像模组线路板高度的1/5~1/3。
  23. 根据权利要求17至22任一所述的线路板拼版,其中相邻两组摄像模组线路板组件之间设有多个连接部,每个连接部连接相对的两个连接器,以实现对相邻两组摄像模组线路板组件的连接。
  24. 根据权利要求17至22任一所述的线路板拼版,其中还包括至少两个定位孔,其设置在所述线路板拼版的边缘废料区域。
  25. 根据权利要求17至22任一所述的线路板拼版,其中所述定位孔对称分布在所述线路板拼版的边缘废料区域。
  26. 根据权利要求17至22任一所述的线路板拼版,其中还包括至少两个用于拼版拍照识别时起定位作用的标记点,其设置在所述线路板拼版的边缘废料区域。
  27. 一种摄像模组,包括摄像模组线路板,其特征在于,所述摄像模组线路板由一线路板拼版切割得到,所述摄像模组线路板的四个边角均为四分之一圆弧的内凹倒角。
  28. 一种线路板拼板,其特征在于,包括:
    一线路板主体层,其中所述线路板主体层具有多个线路板区域和多个绝缘间隔区域,其中所述线路板区域间隔地横向排布,同排相邻的所述线路板区域之间定义所述绝缘间隔区域;和
    一阻焊油墨层,其中所述阻焊油墨层被涂覆于所述线路板主体层表面。
  29. 根据权利要求28所述的线路板拼板,其中所述线路板区域间隔地阵列排布呈至少两排,其中同列相邻的所述线路板区域之间定义了所述绝缘间隔区域。
  30. 一种线路板拼板制造方法,其特征在于,包括:
    形成一线路板主体层,其中所述线路板主体层具有阵列排布的多个线路板区域和多个间隔区域,其中所述间隔区域间隔相邻的所述线路板区域;
    印刷一阻焊油墨层于所述线路板主体层外表面,其中所述阻焊油墨层具有多个引导槽,其中所述引导槽位于所述间隔区域;和
    固化所述阻焊油墨层,其中所述引导槽引导所述阻焊油墨层释放应力。
  31. 根据权利要求30所述的线路板拼板制造方法,其中所述间隔区域被实施为绝缘间隔区域。
  32. 一感光组件,其特征在于,包括:
    一线路板,其中所述线路板具有一线路主体层和一油墨层,其中所述油墨层覆盖于所述线路主体层表面,其中所述油墨层的边沿位于所述线路主体层的含铜层的边沿外侧;
    一感光芯片,其中所述感光芯片电连接地贴附于所述线路板的表面;和
    一模塑基座,其中所述模塑基座采用模塑工艺,形成一对应于所述感光芯片的光窗。
  33. 根据权利要求32所述的感光组件,其中所述模塑基座具有一底部边沿部, 其中所述底部边沿部相对于所述模塑基座底部凸起,位于所述油墨层的外侧,包覆所述油墨层的部分边沿。
  34. 一摄像模组,其特征在于,包括:
    一如权利要求32或33所述的感光组件;和
    一光学组件,其中所述光学组件被支撑于所述感光组件的顶侧,对应于所述感光组件的感光路径。
  35. 一感光组件,其特征在于,包括:
    一线路板,其中所述线路板包括一线路主体层和一油墨层,其中所述油墨层覆盖于所述线路主体层表面,其中所述线路板主体层具有至少两个线路板区域和一间隔区域,其中所述相邻的所述线路板区域的之间定义所述间隔区域,其中所述油墨层于所述间隔区域设有至少一引导槽;
    至少两感光芯片,其中每个所述线路板区域对应的电连接对应的所述感光芯片;以及
    一模塑基座,其中所述模塑基座采用模塑工艺封装,形成对应于所述感光芯片的至少两光窗。
  36. 根据权利要求35所述的感光组件,其中所述间隔区域被实施为绝缘间隔区域。
  37. 一摄像模组,其特征在于,包括:
    一如权利要求35或36所述的感光组件;和
    至少两光学组件,其中所述光学组件被支撑于所述感光组件的顶侧,对应于所述感光组件的感光路径。
PCT/CN2019/113346 2018-11-26 2019-10-25 线路板拼板及其制造方法和感光组件、摄像模组 Ceased WO2020108192A1 (zh)

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