SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a camera module and electronic equipment aims at solving the serious problem of current camera module external electromagnetic interference in the use.
In order to achieve the above object, the present invention provides a camera module, which includes a lens assembly, a sensor assembly, a filter and an electromagnetic film, wherein the lens assembly includes a support, a voice coil motor and a lens, the support has a light-transmitting through hole, the voice coil motor is erected on the support, the voice coil motor has a cavity, the lens is mounted in the cavity, and the voice coil motor is used for driving the lens to reciprocate along an axis of the cavity; the sensor assembly comprises a circuit board, a photosensitive chip and a connector, the photosensitive chip is arranged at a first end of the circuit board and is opposite to the light-transmitting through hole, and the connector is arranged at a second end of the circuit board; the optical filter is arranged opposite to the light-transmitting through hole and is arranged on two sides of the bracket with the photosensitive chip respectively, and the lens and the optical filter are communicated with the light path of the photosensitive chip; the electromagnetic film is arranged on the circuit board and is positioned between the connector and the support.
Preferably, the circuit board includes first base plate, soft board and the second base plate that connects gradually, the support with sensitization chip all set up in on the first base plate, the connector is located the second base plate deviates from one side of support, the electromagnetic film set up in on the soft board.
Preferably, the substrate of the soft board is a non-glue rolled copper substrate arranged in a double layer.
Preferably, the electromagnetic films are laid on two sides of the soft board.
Preferably, an accommodating cavity is formed in one side, opposite to the circuit board, of the support, the photosensitive chip is arranged in the accommodating cavity, an installation groove is formed in one side, opposite to the voice coil motor, of the support, the optical filter is arranged in the installation groove, and the accommodating cavity is communicated with the installation groove through the light-transmitting through hole.
Preferably, the shape of the mounting groove is matched with that of the optical filter, and the shape of the light-transmitting through hole is matched with that of the light-sensitive area of the light-sensitive chip.
Preferably, the filter is square, and the mounting grooves form clearance grooves corresponding to the four corners of the filter.
Preferably, the bracket comprises a support plate and a rib extending from the edge of the support plate to a direction close to the circuit board, and the rib and the support plate enclose the accommodating cavity; the mounting groove is opened in the backup pad towards one side of voice coil motor, the printing opacity through-hole is opened in the diapire of mounting groove and runs through the diapire.
Preferably, the voice coil motor is provided with a positioning column extending towards the circuit board, and the support is opposite to a position of the positioning column to form an avoiding opening.
Additionally, the utility model also provides an electronic equipment, electronic equipment includes as above-mentioned the camera module.
The utility model discloses among the technical scheme, be connected the first end electricity of sensitization chip and circuit board, the support cover is located the top of sensitization chip, makes the printing opacity through-hole align with the sensitization region of sensitization chip, just installs the light filter on the frame to the sensitization region of sensitization chip with it, erects the voice coil motor on the support to make sensitization chip, light filter and camera lens light path intercommunication. In the embodiment, the lens is used for receiving external light, the light shot from the outside enters the optical filter through the lens, part of the light filtered by the optical filter is received by the photosensitive chip on the circuit board, and the photosensitive chip converts an optical signal into an electrical signal; and a connector is arranged at the second end of the circuit board, the connector is connected with an external structure of the electronic equipment, the electric signal is converted into a digital signal, and the digital signal is processed to display an image. Among them, the light sensing chip is preferably a CMOS (complementary metal oxide semiconductor) light sensing element. In addition, still be provided with the electromagnetic film on the circuit board to set up the electromagnetic film between connector and support, the electromagnetic film can block the external electromagnetic interference of in-process at signal conversion and influence the signal transmission of image conversion in-process, thereby can make the image that the camera caught more clear. .
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, in an embodiment of the present invention, the camera module 100 includes a lens assembly 1, a sensor assembly 2, an optical filter 3 and an electromagnetic film 4, the lens assembly 1 includes a support 11, a voice coil motor 12 and a lens 13, the support 11 has a light-transmitting through hole 111, the voice coil motor 12 is erected on the support 11, the voice coil motor 12 has a cavity 122, the lens 13 is installed in the cavity 122, and the voice coil motor 12 is used for driving the lens 13 to reciprocate along an axis of the cavity 122; the sensor component 2 comprises a circuit board 21, a photosensitive chip 22 and a connector 23, wherein the photosensitive chip 22 is arranged at a first end of the circuit board 21 and is opposite to the light-transmitting through hole 111, and the connector 23 is arranged at a second end of the circuit board 21; the optical filter 3 is arranged opposite to the light-transmitting through hole 111 and is arranged on two sides of the bracket 11 with the photosensitive chip 22, and the lens 13, the optical filter 3 and the photosensitive chip 22 are in optical path communication; the electromagnetic film 4 is disposed on the circuit board 21 between the connector 23 and the holder 11.
In the above technical solution, the light sensing chip 22 is electrically connected to the first end of the circuit board 21, the support 11 covers the light sensing chip 22, the light transmitting through hole 111 is aligned to the light sensing area of the light sensing chip 22, the optical filter 3 is installed on the support 11 just facing the light sensing area of the light sensing chip 22, and the voice coil motor 12 is erected on the support 11, so that the light paths of the light sensing chip 22, the optical filter 3 and the lens 13 are communicated. In this embodiment, the lens 13 is used for receiving external light, the light taken from the outside enters the optical filter 3 through the lens 13, part of the light filtered by the optical filter 3 is received by the photosensitive chip 22 on the circuit board 21, and the photosensitive chip 22 converts the optical signal into an electrical signal; and a connector 23 is provided at a second end of the circuit board 21, the connector 23 being connected to an external structure of the electronic device and converting the electrical signal into a digital signal, the digital signal being processed to display an image. Among them, the light sensing chip 22 is preferably a CMOS (complementary metal oxide semiconductor) light sensing element. In addition, still be provided with electromagnetic film 4 on circuit board 21 to set up electromagnetic film 4 between connector 23 and support 11, electromagnetic film 4 can block the external electromagnetic interference of in-process at signal conversion and influence the signal transmission in the image conversion process, thereby can make the image that the camera caught more clear.
The circuit board 21 includes a first substrate 211, a soft board 212, and a second substrate 213 connected in sequence, the support 11 and the photosensitive chip 22 are both disposed on the first substrate 211, the connector 23 is disposed on a side of the second substrate 213 departing from the support 11, and the electromagnetic film 4 is disposed on the soft board 212. The circuit board 21 includes a first substrate 211, a second substrate 213, and a flexible board 212 connecting the first substrate 211 and the second substrate 213, wherein the flexible board 212 in the middle is made of a flexible material, and the width of the flexible board 212 is smaller than the width of the first substrate 211 and the width of the second substrate 213. When the circuit board 21 is bent, the middle flexible board 212 is subjected to bending force and is not easily broken, which is beneficial to bending the first substrate 211 and the second substrate 213 to two sides. The photosensitive chip 22 is disposed on the first substrate 211, and the connector 23 is disposed on the second substrate 213. Photosensitive chip 22 and connector 23 are separately disposed on two sides of circuit board 21, so that when flexible board 212 is bent, photosensitive chip 22 and connector 23 can both be disposed away from the direction of ground, and photosensitive chip 22 and connector 23 can be better protected. In addition, the electromagnetic film 4 is disposed on the flexible board 212, so that external electromagnetic interference in signal transmission between the photosensitive core and the connector 23 can be better prevented. In a preferred embodiment, the circuit board 21 is a flexible circuit board 21 or a rigid-flex circuit board 21. In addition, both ends of the flexible board 212 are arc-connected to the first and second substrates 213, respectively. This can prevent the connection between the first substrate 211 and the second substrate 213 and the flexible board 212 from being easily broken during the bending process.
Alternatively, the substrate of the flexible board 212 is a binderless calendered copper substrate in a two-layer arrangement. The first substrate 211 and the second substrate 213 are electrically connected through the non-glue rolled copper substrate, and the elongation of the non-glue rolled copper substrate can reach 20-45%, so that when the soft board 212 is in a bending state, the non-glue rolled copper substrate can freely extend, the non-glue rolled copper substrate cannot break or locally and severely deform, and the stability of signal transmission can be maintained. Optionally, electromagnetic films 4 are laid on both sides of the soft board 212. Electromagnetic film 4 can block external electromagnetic interference when no glue calendering copper substrate signal transmission to better transmission signal. An anti-oxidation layer can be laid between the non-glue rolled copper base material and the electromagnetic film 4, and the service life of the non-glue rolled copper base material is further prolonged. Because the non-glue rolled copper base material with good extensibility is adopted as the base material of the soft board 212, the bending radius of the area of the soft board 212 can reach 0.8mm, and no surface and poor functionality can be caused after 30 times of bending at 80 degrees under the limit bending condition.
Referring to fig. 3 and 4, an accommodating cavity 112 is formed on a side of the support 11 opposite to the circuit board 21, the photosensitive chip 22 is disposed in the accommodating cavity 112, an installation groove 113 is formed on a side of the support 11 opposite to the voice coil motor 12, the optical filter 3 is disposed in the installation groove 113, and the accommodating cavity 112 is communicated with the installation groove 113 through a light-transmitting through hole 111. That is, the support 11 covers the photosensitive chip 22, so that the photosensitive chip 22 is accommodated in the accommodating cavity 112, and the position of the support 11 is adjusted, so that the position of the light-transmitting through hole 111 corresponds to the position of the photosensitive area of the photosensitive chip 22, and the light-transmitting through hole 111 is directly formed in the bottom wall of the mounting groove 113, so that the light path communication between the light filter 3 and the photosensitive chip 22 can be conveniently realized by disposing the light filter 3 in the mounting groove 113. In order to facilitate the installation of the filter 3, the opening edge of the installation groove 113 may be chamfered.
Specifically, the shape of the mounting groove 113 matches the shape of the optical filter 3, and the shape of the light-transmitting through-hole 111 matches the shape of the light-sensing area of the light-sensing chip 22. Since the glare phenomenon is not increased when the light areas are the same in size, when the bracket 11 having the light-transmitting through holes 111 with a predetermined size is disposed, the size of the light area is the same as that of the light-transmitting area formed by additionally adding the screen printing on the blue glass, that is, the filter 3 having the light-transmitting area formed by the screen printing is directly replaced by limiting the size of the light-transmitting through holes 111. Therefore, the filter 3 having a light transmitting region formed by screen printing is not required, and the process steps can be simplified.
The filter 3 has a square shape, and the mounting grooves 113 have clearance grooves 111a formed at positions corresponding to four corners of the filter 3. Keep away empty groove 111a and can conveniently observe whether the edge of the photosensitive region of sensitization chip 22 aligns with the edge of printing opacity through-hole 111 on support 11, guarantee the precision of equipment to improve the formation of image effect.
More specifically, the bracket 11 includes a supporting plate 114 and a rib 115 extending from an edge of the supporting plate 114 to a direction close to the circuit board 21, and the rib 115 and the supporting plate 114 enclose the accommodating cavity 112; the mounting groove 113 is opened on one side of the supporting plate 114 facing the voice coil motor 12, and the light-transmitting through hole 111 is opened on the bottom wall of the mounting groove 113 and penetrates through the bottom wall. Light all around is sheltered from to flange 115, guarantee sensitization chip 22's operational environment, light filter 3 is located in mounting groove 113, when mounting groove 113's diapire supported light filter 3 promptly, printing opacity through-hole 111 is seted up in mounting groove 113's diapire and is run through the distance that the diapire can reduce between light filter 3 and the sensitization chip 22, reduce camera module 100's size, make camera module 100's application range wider, and, support 11 can perhaps draw integrated into one piece through integrative injection moulding or integrative extrusion molding, improve final support 11 off-the-shelf uniformity and precision from this.
Furthermore, a positioning post 121 extending toward the circuit board 21 is disposed on the voice coil motor 12, and an avoiding opening 116 is formed at a position of the support 11 facing the positioning post 121. Because the mounted position of camera lens 13 and voice coil motor 12 is fixed, through reference column 121 and dodge mouthful 116 cooperation, inject the mounted position of voice coil motor 12 and support 11, during the installation of every time, only need with reference column 121 and dodge mouthful 116 to it, just can guarantee camera lens 13, light path intercommunication between light filter 3 and the sensitization chip 22, can simplify the equipment degree of difficulty through setting up reference column 121 and dodging mouthful 116 promptly, improve the equipment precision, improve the imaging effect of the camera module 100 that final equipment was accomplished.
Additionally, the utility model also provides an electronic equipment, electronic equipment includes as above-mentioned camera module 100. The electronic device can be a mobile phone, a camera or a computer. The specific structure of the camera module 100 refers to the above embodiments, and since the electronic device includes the camera module 100 as described above, the electronic device has all the advantages of the camera module 100, which is not repeated herein.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.