Integrated camera module

Abstract

The utility model relates to the field of cameras, and discloses an integrated camera module. The combined base is connected to the circuit board and integrally formed, the photosensitive assembly is electrically connected to the circuit board and located on the inner side of the combined base, the anti-shake assembly is installed on the combined base, the lens is installed on the anti-shake assembly and aligned with the photosensitive assembly, the shell is arranged on the combined base in a buckled mode, and one end of the lens extends out of the shell. According to the camera module, the camera base and the motor bracket are arranged into the integrated combined base, so that the processing cost is reduced, the assembling operation is simplified, the cost is reduced, a gap between the base and the bracket is completely eliminated, the reject ratio of the camera module is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of camera, especially a kind of integrated camera module. BACKGROUND

[0002] Camera module is a kind of highly integrated optical imaging equipment, usually by lens, image sensor, image signal processor, motor, optical filter and other core components, can be converted into high-quality digital image or video optical signal.Its lens realizes light collection and focusing by precise optical design, sensor (such as CMOS or CCD) is responsible for photoelectric conversion, captures picture details, and image signal processor is to raw data noise reduction, color correction and dynamic range optimization, ensure that imaging is clear and lifelike.Modern camera module also supports auto focus, optical image stabilization (OIS), multi-frame synthesis and other advanced technologies, widely used in smart phones, security monitoring, automotive electronics (such as vehicle surround view, autonomous driving), medical endoscope, unmanned aerial vehicle and AR / VR equipment and other fields.With the integration of AI technology, part of the module also has intelligent scene recognition, portrait tracking and other functions, meet the high-precision, low-delay visual demand in diversified scene, is the "visual core" of intelligent terminal in digital era.

[0003] In the existing camera module, camera base and motor support are usually designed in split type, and the tolerance accumulation of split joint surface can cause deviation of the optical axis alignment of motor and lens, affect imaging consistency; the assembly steps of multiple components can increase assembly process and process complexity, may cause problems such as inclination or uneven glue amount, reduce yield; and the split design can produce micro deformation under vibration or temperature change, affect diagonal accuracy and long-term reliability, and the split joint can become a weak point for dust invasion, increase the risk of module failure. UTILITY MODEL CONTENT

[0004] In view of the above technical problems of prior art, the utility model solves the technical problems of the utility model: provide a kind of integrated camera module to solve the problem of assembly trouble between base and motor support and joint yield reduction.

[0005] To solve the above technical problems, one technical scheme of the utility model is: provide a kind of integrated camera module, including circuit board, combined base integrally formed and connected on circuit board, photosensitive component electrically connected to circuit board and located in the inside of combined base, anti-shake component installed on combined base, lens installed on anti-shake component and aligned with photosensitive component and shell buckled on combined base, one end of the lens extends out of the shell.

[0006] Further, the combined base has a first side and a second side respectively distributed in the direction of the optical axis, the first side is recessed with a first accommodating groove in the direction of the optical axis, and the first accommodating groove is provided with a light outlet penetrating in the direction of the optical axis at the center position of the first accommodating groove, and the photosensitive component is arranged in the first accommodating groove and faces the light outlet.

[0007] Further, the first accommodating groove is recessed with a second accommodating groove at the center position and around the light outlet, the photosensitive component includes a photosensitive chip electrically connected to the circuit board and arranged in the first accommodating groove, and a filter arranged in the second accommodating groove.

[0008] Further, the part of the combined base around the first accommodating groove on the first side is configured as a blocking part, and the blocking part is provided with an exhaust groove on one side thereof, which communicates between the inside and outside of the first accommodating groove in a horizontal direction perpendicular to the direction of the optical axis.

[0009] Further, the exhaust groove has two ports respectively communicating with the inside of the first accommodating groove and the outside of the first accommodating groove, and the exhaust groove has a bending structure so that the two ports are distributed in a staggered manner.

[0010] Further, the exhaust groove includes a first groove segment communicating with the first accommodating groove, a second groove segment communicating with and perpendicular to the first groove segment, and a third groove segment communicating with the first groove segment and parallel to the first groove segment, and the two ports are formed on the first groove segment and the third groove segment respectively.

[0011] Further, the exhaust groove penetrates in the direction of the optical axis towards the side away from the blocking part.

[0012] Further, the second side is recessed with a dust-proof glue groove in the direction of the optical axis around the light outlet, and the dust-proof glue groove is used to fill glue inside to adhere to the lens when the lens is mounted on the anti-shake component.

[0013] Further, the second side is recessed with a third accommodating groove in the direction of the optical axis, a metal sheet is fitted and embedded in the third accommodating groove, the metal sheet is provided with a through hole in the direction of the optical axis at a position corresponding to the light outlet, the dust-proof glue groove is formed on the third accommodating groove and located inside the through hole, and the anti-shake component is mounted on the metal sheet.

[0014] Further, the anti-shake component includes a first anti-shake group mounted on the second side for driving the lens to move in the horizontal direction, and a second anti-shake group mounted on the first anti-shake group for driving the lens to move in the direction of the optical axis, and the lens is mounted on the second anti-shake group.

[0015] The integral camera module has at least the following beneficial effects: the camera base and the motor support are arranged as an integral combined base, thereby reducing processing cost, simplifying assembly operation and cost, completely eliminating the gap between the base and the support, thereby reducing the defective rate of the camera module and improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application.

[0017] Figure 1 It is a structural schematic view of the camera module of the utility model;

[0018] Figure 2 It is an exploded view of the camera module of the utility model;

[0019] Figure 3 It is a cooperation structural schematic view of the combined base and the anti-shake assembly of the utility model;

[0020] Figure 4 It is a cooperation structural schematic view of the combined base and the metal sheet of the utility model;

[0021] Figure 5 It is a structural schematic view of the combined base of the utility model;

[0022] Figure 6 It is a structural schematic view of the combined base (another angle) of the utility model;

[0023] Figure 7 It is Figure 6 The enlarged schematic view of the A part shown in the figure.

[0024] The meanings of the various reference numerals in the drawings are as follows:

[0025] The circuit board 1, the connector 11, the combined base 2, the first side surface 211, the second side surface 212, the first containing groove 22, the second containing groove 221, the enclosing part 23, the glue storage groove 231, the exhaust groove 24, the port 241, the first groove section 242, the second groove section 243, the third groove section 244, the light outlet 25, the third containing groove 26, the metal sheet 261, the first protruding block 262, the second protruding block 263, the through hole 264, the dustproof glue groove 27, the boss 28, the glue storage groove 29, the photosensitive assembly 3, the photosensitive chip 31, the light filter 32, the anti-shake assembly 4, the first anti-shake group 41, the first elastic sheet 411, the first coil 412, the second anti-shake group 42, the second elastic sheet 421, the lens 5, the shell 6, the light inlet 61. DETAILED DESCRIPTION

[0026] The utility model makes further illustration in combination with the drawings.

[0027] Please refer to Figures 1 to 7 The integral camera module comprises a circuit board 1, a combined base 2 integrally formed and connected to the circuit board 1, a photosensitive component 3 electrically connected to the circuit board 1 and located inside the combined base 2, a shakeproof component 4 mounted on the combined base 2, a lens 5 mounted on the shakeproof component 4 and aligned with the photosensitive component 3, and a shell 6 buckled on the combined base 2. The circuit board 1 is used for controlling the transmission of signals and the supply of power, the combined base 2 is used for supporting the shell 6 and the shakeproof component 4, the photosensitive component 3 is used for filtering out unnecessary light and converting optical signals into electrical signals to generate image data, the shakeproof component 4 supports the lens 5 and drives the lens 5 to move to realize automatic focusing, and the shell 6 cooperates with the combined base 2 to protect the shakeproof component 4 and the photosensitive component 3.

[0028] Please refer to Figure 1 And Figure 2 In the embodiment, the circuit board 1 is selected from FPC (flexible circuit board 1), the shape and size of the circuit board 1 are adapted to the combined base 2 and can be a square structure, and a plurality of electronic components are welded on the circuit board 1. The circuit board 1 has an extension on one side, and a connector 11 is welded on the extension. The circuit board 1 is a prior art, and will not be described in detail here.

[0029] Please refer to Figures 1 to 7 In the embodiment, the combined base 2 is a square block structure and has four sides, and the specific shape of the combined base 2 is set according to the actual application range and is not limited to the structure described in the embodiment. The combined base 2 has a first side surface 211 and a second side surface 212 distributed in the opposite direction along the optical axis direction, wherein the optical axis direction is consistent with the thickness direction of the combined base 2, and the first side surface 211 is adhered to the circuit board 1 by using glue. A first accommodating groove 22 is recessed on the first side surface 211 along the optical axis direction, the first accommodating groove 22 is located at the middle position of the first side surface 211 and corresponds to the shape of the combined base 2 and is also a square structure, and the four side walls of the first accommodating groove 22 are parallel to the four sides of the combined base 2. The formation of the first accommodating groove 22 forms a protrusion around the first accommodating groove 22 on the first side surface 211 of the combined base 2, and the protrusion is arranged as a surrounding part 23 to surround the first accommodating groove 22, and correspondingly, the first accommodating groove 22 is formed by the surrounding part 23. When connected to the circuit board 1, the corresponding first side surface 211 part of the surrounding part 23 is connected to the circuit board 1 by glue.

[0030] When the camera module is in the process of AA process (AA process refers to the active alignment technology, including dispensing, active alignment, UV pre-curing, UV curing high temperature baking and other steps), the internal and external pressure difference of the camera module is generated due to the baking, and the pressure difference will cause the internal expansion deformation. In order to solve this problem, the surrounding part 23 has four sides corresponding to the four side walls of the first containing groove 22, and the exhaust groove 24 is opened on one side of the surrounding part 23, which is perpendicular to the horizontal direction along the optical axis direction and communicates the inside and outside of the first containing groove 22. With the length and width of the combination base 2 as a reference, there is a first direction parallel to the length and a second direction parallel to the width (or two directions parallel to the two adjacent side edges of the combination base 2), both the first direction and the second direction are defined as horizontal directions and perpendicular to the optical axis direction. In this way, when the camera module is in the process of AA process, the gas generated in the internal of the camera module due to the baking can be discharged from the exhaust groove 24, preventing the internal of the camera module from deforming. Among them, the exhaust groove 24 has two ports 241 respectively communicating the inner cavity of the first containing groove 22 and the outside of the first containing groove 22, so that the first containing groove 22 is communicated with the outside of the camera module through the exhaust groove 24. The exhaust groove 24 has a bending structure to stagger the distribution of the two ports 241, thereby lengthening the length of the exhaust groove 24 and slowing down the exhaust speed to some extent, so that the gas in the first containing groove 22 is not discharged too quickly to cause the gas pressure in the first containing groove 22 to change too quickly and cause adverse effects. Specifically, the exhaust groove 24 includes a first groove segment 242 arranged along the first direction and communicating the first containing groove 22, a second groove segment 243 communicating and perpendicular to the first groove segment 242, and a third groove segment 244 communicating the first groove segment 242 and parallel to the first groove segment 242, the second groove segment 243 is arranged along the second direction, and the two ports 241 are respectively formed on one end of the first groove segment 242 and the third groove segment 244 away from the second groove segment 243. Among them, the exhaust groove 24 penetrates the first side surface 211 along the optical axis direction away from one side of the surrounding part 23, so as to facilitate the opening of the exhaust groove 24. In order to ensure the sealing of the camera module, after the combination base 2, the anti-shake assembly 4 and the like are fixed with the circuit board 1, the exhaust groove 24 is sealed by dispensing to block the exhaust groove 24, and the exhaust groove 24 can be sealed by using glue when connecting the combination base 2 and the circuit board 1 by glue, without additional dispensing. The glue storage groove 231 is opened on the outer side wall of the surrounding part of the combination base 2 away from the first containing groove 22, the slot of the glue storage groove 231 extends to the first side surface 211 and penetrates in the horizontal direction away from the first containing groove 22, and the glue storage groove 231 penetrates the first side surface 211 along the optical axis direction, so that the excess glue can enter the glue storage groove 231 and contact the circuit board 1 when dispensing to increase the connection strength.

[0031] In the content defined by the embodiment, the second accommodating groove 221 is recessed relative to the first accommodating groove 22 and is arranged in communication with the first accommodating groove 22 and adapted to the arrangement of the photosensitive assembly 3, and is arranged at the center of the inner wall of the side of the first accommodating groove 22 close to the second side surface 212. The light outlet 25 is arranged at the center of the inner wall of the side of the second accommodating groove 221 close to the second side surface 212 and penetrates the second side surface 212 along the optical axis direction. The photosensitive assembly 3 is arranged in the first accommodating groove 22 and is arranged opposite to the light outlet 25, so that the photosensitive assembly 3 can process the light. The size of the light outlet 25 is smaller than that of the second accommodating groove 221, so that the light outlet 25 and the second accommodating groove 221 are arranged in a stepped manner.

[0032] In the content defined by the embodiment, the second side surface 212 is recessed along the optical axis direction to form the third accommodating groove 26. The metal sheet 261 is arranged in the third accommodating groove 26. The metal sheet 261 can be a steel support. The metal sheet 261 is electrically connected to the circuit board 1 through the internal circuit to provide power for the anti-shake assembly 4. A plurality of first protrusions 262 are arranged on the third accommodating groove 26 corresponding to the position of the anti-shake assembly 4. The anti-shake assembly 4 is supported on the first protrusions 262. The height of the first protrusions 262 is higher than that of the metal sheet 261. First avoiding grooves are arranged on the metal sheet 261 corresponding to the positions of the first protrusions 262. Second protrusions 263 are arranged on the third accommodating groove 26 corresponding to the anti-shake assembly 4 along the optical axis direction. Second avoiding grooves are arranged on the metal sheet 261 corresponding to the positions of the second protrusions 263 and penetrating the second protrusions 263 along the optical axis direction. Perforations 264 are arranged on the metal sheet 261 corresponding to the position of the light outlet 25 along the optical axis direction. The diameter of the perforations 264 is larger than the size of the light outlet 25. The first avoiding grooves are in communication with the perforations 264, and the first protrusions 262 are arranged close to the perforations 264. The anti-shake assembly 4 is arranged on the metal sheet 261 through the first protrusions 262 and the second protrusions 263.

[0033] The dustproof glue groove 27 is recessed relative to the third accommodating groove 26 and is formed on the inner wall of the side of the third accommodating groove 26 close to the first side 211 along the optical axis direction. The dustproof glue groove 27 is formed on the third accommodating groove 26 and is located inside the through hole 264. The dustproof glue groove 27 is used to fill the glue inside and adhere to the lens 5 when the lens 5 is installed on the anti-shake assembly 4. The dustproof glue groove 27 is provided in four and is arranged outside the four sides of the light outlet 25. The four dustproof glue grooves 27 are located inside the through hole 264 in the horizontal direction, so that the dustproof glue groove 27 is relatively surrounded around the four-axis of the photosensitive assembly 3. By filling the glue into the dustproof glue groove 27, the dustproof glue can be used to adsorb the dust in the lens 5 and the anti-shake assembly 4, so as to reduce the dust close to the photosensitive assembly 3 through the light outlet 25. It should be noted that the internal circuit is provided in the entire combined base 2. The internal circuit is formed of conductive metal and can be used for conduction while improving the strength of the combined base 2.

[0034] Referring to Figure 2 In the embodiment, the photosensitive assembly 3 includes the photosensitive chip 31 electrically connected to the circuit board 1 and located in the first accommodating groove 22, and the filter 32 installed in the second accommodating groove 221. The filter 32 is arranged opposite to the light outlet 25. The photosensitive chip 31 is used to convert the optical signal into an electrical signal. The filter 32 is used to filter out the unnecessary light to improve the image quality.

[0035] Referring to Figure 2 and Figure 3In the embodiment, the anti-shake assembly 4 comprises a first anti-shake group 41 mounted on the second side surface 212 for driving the lens 5 to move in the horizontal direction, and a second anti-shake group 42 mounted on the first anti-shake group 41 for driving the lens 5 to move in the optical axis direction, and the lens 5 is mounted on the second anti-shake group 42. The first anti-shake group 41 comprises four first coils 412 arranged corresponding to the second protrusions 263, a first carrier supported on the first protrusion 262, four first magnets arranged in the first carrier and corresponding to the four first coils 412, and a first spring sheet 411 connected between the second side surface 212 of the combined base 2 and the first carrier. Two second protrusions 263 are protruded at positions corresponding to each of the first coils 412 on the third accommodating groove 26, and the first coil 412 is sleeved on the second protrusion 263 and connected to the metal sheet 261. A first conductive sheet made of a conductive metal material such as steel is arranged in the first carrier, the first conductive sheet wraps the first magnets, the first conductive sheet is connected to the first spring sheet 411, and the first spring sheet 411 is connected to the internal circuit in the combined base 2 to realize the circuit communication. Two opposite first coils 412 and first magnets are matched to drive the first carrier to move in the first direction, and the other two opposite first coils 412 and first magnets are matched to drive the first carrier to move in the second direction. The inner side of the first carrier is provided with a first mounting hole in the optical axis direction corresponding to the position of the through hole 264, and the first spring sheet 411 is used to reset the first carrier after moving. The second anti-shake group 42 comprises a second carrier in the first mounting hole, a coil group for driving the second carrier to move in the optical axis direction, and a second spring sheet 421 connected between the first carrier and the second carrier, the coil group is similar to the first coil 412 and the first magnet but the moving direction is different, and the second spring sheet 421 is used to reset the second carrier after moving. A second mounting hole is arranged on the second carrier corresponding to the position of the light outlet 25, and the lens 5 is mounted at the second mounting hole. The specific structure of the anti-shake assembly 4 can refer to the existing voice coil motor structure and the drawings shown, except that the support and base of the voice coil motor are integrally formed as the combined base 2 in the embodiment, the rest is the same as the prior art, which will not be described in detail here.

[0036] In the embodiment, the lens 5 is a common optical lens 5, which will not be described here. The shell 6 has a top plate for supporting on the first carrier and four side plates for surrounding on the four side edges of the combined base 2, and the four outer side edges of the combined base 2 are protruded with the bosses 28, and the four side plates of the shell 6 are provided with the recesses corresponding to the positions of the bosses 28, and the shell 6 is sleeved on the bosses 28 through the recesses so that the bosses 28 are used to support the shell 6, realizing the connection between the shell 6 and the combined base 2. The light inlet 61 is arranged on the shell 6 corresponding to the position of the lens 5, and one end of the lens 5 extends out of the shell 6 through the light inlet 61.

[0037] The working mode of one of the embodiments of the integral camera module is as follows: during assembly, the dustproof glue groove 27 is used to fill dustproof glue to block and adsorb dust to reduce the influence of dust on the use of the filter 32, the exhaust groove 24 uniformly discharges gas during AA process to prevent large air pressure difference in the inner cavity of the camera module, then the exhaust groove 24 is filled to keep the sealing of the first containing cavity when the circuit board 1 and the combined base 2 are bonded by using glue; then after the circuit board 1 is connected with the circuit through the connector 11, light is focused to the filter 32 after passing through the lens 5, the filter 32 filters out the unnecessary light in the light, finally the light is imaged on the photosensitive chip 31, the photosensitive chip 31 converts the light signal into an electric signal and carries out image processing to complete imaging, in this process, the anti-shake assembly 4 automatically adjusts the lens 5 for focusing, and the lens 5 uses the light outlet 25 to ensure the imaging quality when the first carrier and the second carrier are moved.

Claims

1. An integrated camera module, characterized by: The camera includes a circuit board, a combined base connected to the circuit board and integrally formed, a photosensitive assembly electrically connected to the circuit board and located inside the combined base, an anti-shake assembly mounted on the combined base, a lens mounted on the anti-shake assembly and aligned with the photosensitive assembly, and a housing buckled on the combined base, one end of the lens extending out of the housing.

2. The integrated camera module of claim 1, wherein: The combined base has a first side surface and a second side surface respectively distributed in the direction of the optical axis, the first side surface is recessed with a first accommodating groove in the direction of the optical axis, and a light outlet is formed in the center of the first accommodating groove and penetrates through in the direction of the optical axis, the photosensitive assembly is mounted in the first accommodating groove and arranged opposite to the light outlet.

3. The integrated camera module of claim 2, wherein: A second accommodating groove is recessed in the center of the first accommodating groove and around the light outlet, the photosensitive assembly includes a photosensitive chip electrically connected to the circuit board and located in the first accommodating groove, and a filter mounted in the second accommodating groove.

4. The integrated camera module of claim 2, wherein: The part of the combined base around the first accommodating groove on the first side surface is configured as a surrounding part, and an exhaust groove is formed on one side of the surrounding part and communicates between the inside and outside of the first accommodating groove in a horizontal direction perpendicular to the direction of the optical axis.

5. The integrated camera module of claim 4, wherein: The exhaust groove has two ports respectively communicating with the inside and outside of the first accommodating groove, and the exhaust groove has a bending structure so that the two ports are distributed in a staggered manner.

6. The integrated camera module of claim 5, wherein: The exhaust groove includes a first groove segment communicating with the first accommodating groove, a second groove segment communicating with and perpendicular to the first groove segment, and a third groove segment communicating with and parallel to the first groove segment, and the two ports are formed on the first groove segment and the third groove segment.

7. The integrated camera module of claim 4 or 5, wherein: The exhaust groove penetrates through in the direction of the optical axis towards the side of the surrounding part.

8. The integrated camera module of claim 2, wherein: Dust-proof glue grooves are recessed in the direction of the optical axis on the second side surface and distributed around the four sides of the light outlet, and the dust-proof glue grooves are used to fill glue inside and adhere to the lens when the lens is mounted on the anti-shake assembly.

9. The integrated camera module of claim 8, wherein: A third accommodating groove is recessed in the direction of the optical axis on the second side surface, a metal sheet is fitted and embedded in the third accommodating groove, the metal sheet is provided with a through hole in the direction of the optical axis at a position corresponding to the light outlet, the dust-proof glue groove is formed on the third accommodating groove and located inside the through hole, and the anti-shake assembly is mounted on the metal sheet.

10. The integrated camera module of claim 2, wherein: The anti-shake assembly includes a first anti-shake assembly mounted on the second side surface for driving the lens to move in the horizontal direction, and a second anti-shake assembly mounted on the first anti-shake assembly for driving the lens to move in the direction of the optical axis, and the lens is mounted on the second anti-shake assembly.

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