WO2019242421A1 - 感光组件、摄像模组及相应的终端设备和制作方法 - Google Patents

感光组件、摄像模组及相应的终端设备和制作方法 Download PDF

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Publication number
WO2019242421A1
WO2019242421A1 PCT/CN2019/085957 CN2019085957W WO2019242421A1 WO 2019242421 A1 WO2019242421 A1 WO 2019242421A1 CN 2019085957 W CN2019085957 W CN 2019085957W WO 2019242421 A1 WO2019242421 A1 WO 2019242421A1
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WIPO (PCT)
Prior art keywords
photosensitive
circuit board
lens
photosensitive chip
area
Prior art date
Application number
PCT/CN2019/085957
Other languages
English (en)
French (fr)
Inventor
赵波杰
梅哲文
梅其敏
栾仲禹
陈振宇
席逢生
Original Assignee
宁波舜宇光电信息有限公司
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 CN201810643308.6A external-priority patent/CN110636185A/zh
Priority claimed from CN201820958434.6U external-priority patent/CN208739213U/zh
Priority claimed from CN201820958435.0U external-priority patent/CN208904027U/zh
Priority claimed from CN201810643832.3A external-priority patent/CN110634960B/zh
Application filed by 宁波舜宇光电信息有限公司 filed Critical 宁波舜宇光电信息有限公司
Publication of WO2019242421A1 publication Critical patent/WO2019242421A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02Details
    • H01L31/0203Containers; Encapsulations, e.g. encapsulation of photodiodes

Definitions

  • the present application relates to the field of optical technology, and in particular, the present application relates to a photosensitive component, a camera module, a corresponding terminal device, and a manufacturing method.
  • the full-screen design is to increase the proportion of the display area on the front panel of the mobile phone to achieve a full-featured display effect, and with the trend comes the front panel process design and device layout issues.
  • the non-display area of the front panel of the smartphone has a front camera (that is, a camera module), a handset, a distance sensor, a light sensor, a function button, a fingerprint recognition area, etc.
  • a front camera that is, a camera module
  • the area occupied by the above devices must It has been scaled down, and to this end, various solutions have been proposed.
  • the micro-slit handset, gesture operation, under-screen fingerprints, etc. but as the biggest pain point, the front-facing camera always fails to come up with an effective and feasible solution because of its irreplaceability.
  • the camera since the camera is a precise optical system, it includes a lens group consisting of a plurality of lenses, a color filter, a photosensitive chip and many other optical devices. These optical devices need corresponding structural parts to support and fix to ensure the stability and reliability of the optical path. These structural parts will inevitably occupy a certain space. Furthermore, the camera needs to have a corresponding circuit structure to output picture data, so circuit boards, electronic components, etc. will also occupy a certain space. Reasonably arranging the internal structure of the camera to increase the screen ratio of the smart terminal device is one of the urgent problems in the current market.
  • FIG. 1 shows an example in which a front camera 30 is provided at a corner of the mobile phone 10.
  • the screen ratio of the mobile phone can be further increased, thereby improving the overall visual effect of the front of the mobile phone.
  • FIG. 2 is a schematic perspective view of a typical camera module in the prior art.
  • the camera module includes a lens assembly 601 located above and a photosensitive assembly 602 located below.
  • the lens component is circular in a plan view, and the photosensitive component is square in a top view.
  • the lens component bears and is fixed to the photosensitive component (for example, fixed by an adhesive) to form a complete camera module.
  • the photosensitive component is often provided with components such as a photosensitive chip, gold wires, electronic components, and various wirings, and based on optical principles, the optical center of the lens usually needs to be aligned with the center of the photosensitive area.
  • FIG. 36 exemplarily shows a schematic partial cross-sectional view of a typical mobile phone in the prior art.
  • FIG. 36 shows a display panel 301 of the mobile phone, a transparent cover plate 302 located above the display panel 301, a top frame 304, a back case 305, and a camera module 300 of the mobile phone. It can be seen that the camera module 300 is located between the display panel 301 and the top frame 304 of the mobile phone.
  • the photo sensor chip 103 of the camera module 300 is located in the center of the circuit board 104, which results in that the upper area of the peripheral area of the circuit board will occupy a large amount and waste the display area of the front panel.
  • the present application aims to provide a solution capable of overcoming at least one drawback of the prior art.
  • a photosensitive component including:
  • the photosensitive chip is mounted on a surface of the circuit board, an outer contour of the surface of the circuit board is a notch rectangle, and the notch rectangle has at least one notch.
  • the notch is a chamfer
  • the chamfer is adapted to be adapted to a rounded corner of a terminal device with a rounded rectangular shape when viewed from above.
  • the photosensitive chip has a rectangular photosensitive area
  • the photosensitive component further includes:
  • a lens component lens holder which is installed or formed on the surface of the circuit board; a center of the lens component lens holder has a through hole; a top surface of the lens component lens holder is adapted to bear an annular bottom surface of the lens component; and The shape of the outer contour of the top surface of the lens assembly lens holder is adapted to the shape of the outer contour of the surface of the circuit board.
  • the lens assembly lens holder is a molding part, which is formed on the surface of the circuit board by a molding process, surrounds the photosensitive chip, extends toward the photosensitive chip, and contacts the photosensitive chip;
  • the photosensitive component further includes:
  • An annular support is provided on the surface of the photosensitive chip and surrounds the photosensitive area, and the color filter is attached to the surface of the photosensitive chip through the annular support.
  • the side surface of the molding portion contacting the color filter, and the top surface of the molding portion is a flat surface suitable for bearing the lens holder.
  • the photosensitive chip has a non-photosensitive area surrounding the photosensitive area, a solder pad is provided in the non-photosensitive area, and the solder pad is electrically connected to the circuit board through a metal wire.
  • the photosensitive component further includes an electronic component disposed on a surface of the circuit board, and the molding portion covers the electronic component and the metal wire.
  • the top surface of the molding portion is a flat surface formed by die pressing, and the molding portion covers at least a part of an edge region of an upper surface of the color filter.
  • the molding portion contacts the annular support, and an edge region of the bottom surface of the color filter is not exposed outside the outer side of the annular support.
  • the outer contour of the top surface of the molding part is the notch rectangle that matches the shape of the surface of the circuit board.
  • neither the electronic component nor the metal wire is disposed in a region of the circuit board having the notch.
  • the top surface of the molding part has a notch section corresponding to the notch, and the minimum width of the notch section is 0.15-0.35mm.
  • the notch rectangle has only one notch; or the notch rectangle has two notches, and the two notches are at positions opposite to each other or adjacent positions.
  • the molding part and the circuit board form a combined body
  • the combined body has an outer side surface
  • the outer side surface includes a retracted surface retracted toward the photosensitive chip, and one end of the retracted surface It is located on the bottom surface of the circuit board.
  • the indented surface is provided at a position corresponding to the notch.
  • a camera module including:
  • a lens assembly including a cylindrical lens mount and an optical lens
  • the bottom surface of the cylindrical lens holder bears and is fixed to the surface of the circuit board.
  • a camera module including:
  • a lens assembly including a cylindrical lens mount and an optical lens
  • the bottom surface of the cylindrical lens holder is abutted on and fixed to the top surface of the molding portion.
  • the thickness of the side wall of the cylindrical lens holder is uneven to fit the notch of the circuit board.
  • a terminal device including:
  • a housing having a shape of a rounded rectangle
  • the camera module according to any one of the above, which is installed in the housing, wherein one of the notches of the circuit board is set at a position corresponding to a rounded corner of the housing.
  • a method for manufacturing a photosensitive component including:
  • a photosensitive chip is mounted on the surface of the circuit board, wherein the photosensitive chip has a rectangular photosensitive area, the outer contour of the surface of the circuit board is rectangular, and at least one corner of the surface of the circuit board is set as a reserved area And the reserved area is not wired; and
  • the reserved area is removed by cutting.
  • the reserved area is removed by grinding, so that the notch rectangle has a chamfer.
  • the step 1) includes:
  • the combination of the color filter and the photosensitive chip is mounted on a surface of the circuit board, wherein a back surface of the photosensitive chip is attached to a surface of the circuit board.
  • the photosensitive chip has a non-photosensitive area surrounding the photosensitive area, and a solder pad is provided in the non-photosensitive area;
  • the method for manufacturing a photosensitive component further includes steps:
  • a metal wire is connected between the bonding pad and the circuit board to electrically connect the circuit board with the photosensitive chip, and the metal wire avoids the reserved area.
  • step 2a) further comprises: mounting electronic components on the surface of the circuit board, and the electronic components avoid the reserved area.
  • the method for manufacturing a photosensitive component further includes steps:
  • a molding portion on the surface of the circuit board by a molding process, the molding portion surrounding the photosensitive chip and extending toward and contacting the photosensitive chip, and the molding portion covering the photosensitive chip
  • step 1b) is performed between the step 1) and the step 2);
  • the step 2) further includes: cutting or grinding the assembly formed by the molding part and the circuit board, so that the outer contour of the top surface of the molding part is formed to match the surface shape of the circuit board.
  • the 1b) further includes: directly forming an outer contour of the top surface of the molding part by a molding process to match a surface shape of the circuit board with a notch rectangle;
  • the step 1b) is performed after the step 2).
  • a method for manufacturing a camera module including:
  • the lens component is mounted on the photosensitive component, wherein a bottom surface of the lens component is supported on the circuit board or a top surface of the molding portion.
  • a method for manufacturing a photosensitive component including:
  • the color filter is attached to the photosensitive chip through a ring-shaped support to obtain a combination of the color filter and the photosensitive chip, wherein the photosensitive chip has a rectangular photosensitive area, and a non-photosensitive area surrounding the photosensitive area.
  • the non-photosensitive area is provided with a solder pad.
  • the ring-shaped support is disposed on the surface of the photosensitive chip and surrounds the photosensitive area.
  • the surface of the circuit board master includes a plurality of rectangular circuit board areas, where each circuit At least one corner of the board area is set as a reserved area, and the reserved area is not wired;
  • a plurality of combinations of the color filter and the photosensitive chip are respectively mounted to each circuit board area of the circuit board mother board, wherein a back surface of the photosensitive chip is attached to the circuit board mother board s surface;
  • a top surface of the molding layer is a flat surface formed by die pressing, and The top surface is higher than the upper surface of the color filter;
  • the molding layer has a plurality of light windows respectively corresponding to each photosensitive chip; and, for each circuit board area, the molding layer surrounds the corresponding The photosensitive chip extends to the photosensitive chip and contacts the photosensitive chip, and the molding layer covers the electronic components and the metal wires mounted on the circuit board area and covers the color filters corresponding to the circuit board area. At least a part of the edge area of the upper surface;
  • the combination formed by the circuit board mother board and the molding layer is cut into a single photosensitive component semi-finished product, and the single photosensitive component semi-finished product includes the circuit board and the A molding portion on the surface thereof, and an outer contour of a surface of the semi-finished product of the single-piece photosensitive member is rectangular;
  • the circuit board is partially removed according to the reserved area, and the molding part attached to the reserved area is removed, so that the outer contour of the surface of the obtained photosensitive component It is a notch rectangle with at least one notch.
  • a photosensitive component including: a circuit board; a photosensitive chip mounted on a surface of the circuit board, the surface of the photosensitive chip having a photosensitive region; and a color filter attached to The photosensitive chip; and a lens holder installed or formed on the surface of the circuit board and surrounding the photosensitive chip, the lens holder has at least one terminal bearing side, and the terminal bearing side to the photosensitive area The distance from the other side of the lens base of the lens assembly to the photosensitive area is smaller than.
  • the photosensitive component further includes a ring-shaped support body provided on a surface of the photosensitive chip and surrounding the photosensitive area, and the color filter is attached to the photosensitive chip through the ring-shaped support body.
  • the lens holder has an annular top surface adapted to bear the lens assembly.
  • the lens holder is a molding part, which is formed on the surface of the circuit board by a molding process, surrounds the photosensitive chip, extends toward the photosensitive chip, and contacts the photosensitive chip.
  • the molding portion contacts a side surface of the color filter.
  • the top surface of the molding portion is a flat surface formed by die pressing.
  • the molding part has an inclined inner side surface, the inner side surface surrounds a light window, and the light passing surface of the light window gradually decreases from top to bottom.
  • the molding portion has an inner side surface, and the inner side surface extends inward from a top surface of the molding portion to form a draft slope.
  • the molding portion contacts an outer side surface of the annular support.
  • the photosensitive chip further includes a solder pad surrounding or partially surrounding the outside of the photosensitive chip; and, a region between the photosensitive region and a side surface of the photosensitive chip is a non-photosensitive region, and the solder is provided on the substrate.
  • the contact surface of the ring-shaped support and the photosensitive chip is located between the solder pad and the photosensitive area; and the solder pad is electrically connected to the circuit board through a metal wire.
  • the photosensitive component further includes an electronic component formed on a surface of the circuit board, and the molding portion covers the metal wire and the electronic component.
  • the circuit board has at least one first terminal bearing side, and no electronic component is provided in a region between the photosensitive chip and the first terminal bearing side.
  • the bottom surface of the color filter is not exposed outside the outer side surface of the annular support.
  • solder pad and the metal wire are not provided on a side of the photosensitive chip corresponding to the side surface bearing the first terminal.
  • the outer side surface of the molding part includes a second terminal bearing side, the first terminal bearing side and the second terminal bearing side are formed by cutting the circuit board and the molding part at a time. Formed cutting surface.
  • the side surface of the first terminal bearing is a cutting surface formed by cutting the circuit board, and the side surface of the second terminal bearing has a draft bevel, and the draft bevel is all retained or partially cut off.
  • the ring-shaped support is formed on the photosensitive chip or the color filter by a photoresist, and is attached to the color filter or the photosensitive chip by an adhesive.
  • the ring-shaped support is formed of a die-bonding film molding material, a lower surface of the ring-shaped support is in contact with and bonded to an upper surface of the photosensitive chip, and an upper surface of the ring-shaped support is in contact and bonded On the lower surface of the color filter.
  • the contact area between the support and the photosensitive chip is smaller than the contact area between the support and the color filter.
  • the lens holder is an injection lens holder, and the lens holder is mounted on the surface of the circuit board after injection molding.
  • a camera module including the aforementioned photosensitive component and a lens component mounted on the photosensitive component.
  • the lens assembly includes an optical lens and an outer lens barrel.
  • the optical lens is installed inside the outer lens barrel, and the bottom of the outer lens barrel bears on the top surface of the lens holder.
  • the side wall of the outer lens barrel has an adapting section
  • the wall thickness of the adapting section is smaller than the wall thickness of other parts of the side wall
  • the center of the lens holder has a light window
  • the optical lens includes a lens barrel and a lens group installed in the lens barrel, and is fixed to the top surface of the lens base between the side surface of the terminal bearing and the light window;
  • An outer side surface of the lens barrel is fixed to an inner side surface of the outer lens barrel.
  • an intelligent terminal device including: a camera module, the camera module is the aforementioned camera module, and the terminal of the camera module is supported on the side of the camera module. A frame of the terminal device.
  • the terminal bearing side is supported by the inner side of the frame through a buffer layer.
  • the camera module is a front camera module, and the frame is a top frame of the housing.
  • the smart terminal device is a smart phone.
  • This application can reduce the distance between the center of the photosensitive area and the frame (rounded corners) (such as the top frame) of the mobile phone, increase the screen ratio, and improve the overall visual effect of the front of the mobile phone.
  • This application can make the light path of the lens closer to the rounded corners / top frame of the mobile phone frame, thereby increasing the screen ratio and improving the overall visual effect of the front of the mobile phone.
  • This application can ensure the stable and reliable structure of the optical path of the camera module, which is suitable for mass production.
  • the molding portion can cover at least a part of the edge area of the color filter surface, and the lens component can be supported and fixed on the top surface of the molding portion, so as to extremely reduce the center of the photosensitive area to the rounded corners of the mobile phone frame. Distance to obtain the best overall visual effect of the front of the phone.
  • FIG. 1 shows an example in which a front camera is set at a corner of a mobile phone
  • FIG. 2 is a schematic perspective view showing the appearance of a typical camera module in the prior art
  • FIG. 3 is a schematic top view of a photosensitive component according to an embodiment of the present application.
  • FIG. 5 shows a schematic diagram of a comparison between a mobile phone based on the embodiment of FIG. 3 and a mobile phone based on a conventional camera module when the front camera module is disposed at a rounded corner;
  • FIG. 6 is a schematic three-dimensional appearance diagram of a photosensitive component and a corresponding camera module according to another embodiment of the present application.
  • FIG. 7 is a schematic cross-sectional view of a photosensitive component according to another embodiment of the present application.
  • FIG. 9a shows a camera module based on the photosensitive assembly shown in FIG. 7;
  • FIG. 9b shows a schematic top plan view of a lens assembly lens holder whose top surface has a rectangular outer contour
  • FIG. 10 is a schematic cross-sectional view of a camera module according to another embodiment of the present application.
  • FIG. 11 is a schematic cross-sectional view of a camera module according to the embodiment of FIG. 10 according to an embodiment of the present application;
  • FIG. 13 shows a schematic top view of a photosensitive component after a molded part is removed according to an embodiment of the present application
  • FIG. 14 is a schematic cross-sectional view at the AA ′ section of FIG. 13; FIG.
  • FIG. 16 is a schematic top view of a photosensitive component according to another embodiment of the present application.
  • FIG. 17 is a schematic top view of a circuit board after a photosensitive chip is mounted on the surface of the circuit board according to an embodiment of the present application;
  • FIG. 20 is a schematic diagram of cutting or grinding the assembly formed by the molding portion and the wiring board shown in FIG. 19;
  • FIG. 21 is a schematic perspective view of a photosensitive component after cutting or grinding a combination formed by a molding portion and a circuit board according to an embodiment of the present application;
  • FIG. 22 shows a schematic plan view without perspective corresponding to FIG. 21;
  • FIG. 23 is a schematic perspective view of a photosensitive component after cutting a combination formed by a molding portion and a circuit board in another embodiment of the present application.
  • FIG. 24 shows a schematic plan view without perspective corresponding to FIG. 23;
  • FIG. 25 illustrates a molded portion with a rectangular outer contour of a corner formed by a molding process in an embodiment of the present application
  • FIG. 26 is a schematic top view of the photosensitive component after a part of the circuit board is removed;
  • FIG. 27 illustrates a circuit board with a notch and a photosensitive chip, an electronic component, and a metal wire arranged on a surface thereof in an embodiment of the present application
  • FIG. 28 is a schematic diagram of molding a molded part on a circuit board with a corner in an embodiment of the present application.
  • FIG. 29 is a schematic top view of a circuit board motherboard in an embodiment of the present application.
  • FIG. 30 shows a schematic diagram after a plurality of assemblies are separately installed to each circuit board area of the circuit board motherboard in an embodiment of the present application
  • FIG. 31 is a schematic diagram showing an integrated molding layer formed on a surface of the circuit board mother board by a molding process in an embodiment of the present application.
  • FIG. 32 is a schematic diagram of a photosensitive component semi-finished product in which an assembly formed by the circuit board mother board and the molding layer is cut into a single body in an embodiment of the present application;
  • FIG. 33 is a schematic diagram showing that the outer contour of the surface of the photosensitive component is a rectangle with a missing corner by a removal process in an embodiment of the present application;
  • FIG. 34 is a schematic diagram showing that the outer contour of the surface of the photosensitive component is a rectangle with a missing corner by a removal process in another embodiment of the present application;
  • FIG. 35 illustrates a side cross-sectional view of a mobile phone in an embodiment of the present application.
  • FIG. 36 exemplarily illustrates a partial cross-sectional view of a typical mobile phone in the prior art
  • FIG. 37 is a schematic cross-sectional view of a camera module 300 according to an embodiment of the present application.
  • FIG. 38 is a schematic cross-sectional view of a photosensitive assembly 100 in an embodiment of the present application.
  • FIG. 38A is a schematic cross-sectional view of a photosensitive member 100 in another embodiment of the present application.
  • FIG. 39 shows a schematic top view of a circuit board 104 and a photosensitive chip 103 of the photosensitive module 100 according to an embodiment of the present application;
  • FIG. 40 shows a schematic top view of the circuit board 104 and the photosensitive chip 103 after the color filter 101 is added to FIG. 39;
  • FIG. 41 is a schematic top view of the photosensitive component 100 after the molding part 106 is added to FIG. 40;
  • FIG. 42A is a schematic bottom view of an outer lens barrel 201 with non-uniform sidewall thicknesses in one embodiment of the present application.
  • FIG. 42B is a schematic bottom view of the outer lens barrel 201 with non-uniform sidewall thicknesses in another embodiment of the present application.
  • FIG. 43 is a schematic partial cross-sectional view of a mobile phone according to an embodiment of the present application.
  • FIG. 44 shows a schematic diagram of a comparison between a mobile phone based on the conventional camera module 300 and a mobile phone based on the improved camera module 300 according to an embodiment of the present application;
  • FIG. 45 shows a photosensitive structure component having a color filter lens holder
  • FIG. 46 shows a molded body photosensitive member without a color filter holder
  • FIG. 47 is a schematic cross-sectional view of a photosensitive component according to an embodiment of the present application.
  • the expressions of the first, second, etc. are only used to distinguish one feature from another feature, and do not indicate any limitation on the feature. Therefore, without departing from the teachings of this application, the first subject discussed below may also be referred to as the second subject.
  • FIG. 3 is a schematic top view of a photosensitive component according to an embodiment of the present application.
  • the photosensitive assembly includes a photosensitive chip 103 and a circuit board 104.
  • the photosensitive chip 103 is mounted on a surface of the circuit board 104
  • an outer contour 1041 of the surface of the circuit board 104 is a notch rectangle
  • the notch rectangle has at least one notch 1042.
  • the notch 1042 is a chamfer
  • the chamfer is adapted to be adapted to the rounded corners of the terminal device 10 with a rounded rectangular shell.
  • FIG. 4 shows a terminal device 10 (such as a mobile phone) with a rounded rectangle. Referring to FIG.
  • FIG. 5 shows a comparison diagram of a mobile phone based on the embodiment of FIG. 3 and a mobile phone based on the conventional camera module 30 when the front camera module is disposed at a rounded corner.
  • the left side of FIG. 5 is a mobile phone based on the conventional camera module 30, and the right side of FIG. 5 is a mobile phone based on the embodiment of FIG. 3. It can be seen that in the mobile phone based on the embodiment of FIG. 3, the camera module 20 is significantly closer to The rounded corners of the phone can increase the screen ratio of the phone and improve the overall visual effect on the front of the phone.
  • FIG. 6 is a schematic three-dimensional appearance diagram of a photosensitive component and a corresponding camera module according to another embodiment of the present application. It can be seen that, in the embodiment of FIG. 6, the notch 1042 of the circuit board 104 may be a notch 1042 cut along a diagonal line on the rectangular circuit board 104. In this embodiment, the cutting may be cutting, sawing, punching, or laser cutting. It should be noted that the circuit board 104 of the mobile phone camera module is usually also connected to a connector through a flexible connection band. The connector is used to electrically connect with the corresponding interface of other parts of the mobile phone (such as the motherboard).
  • the outer contour 1041 of the surface refers to the outer contour 1041 of the surface of the circuit board 104 except for the flexible connecting tape and the connector.
  • FIG. 7 shows a schematic cross-sectional view of a photosensitive assembly 50 according to another embodiment of the present application.
  • the cross-section shown in FIG. 7 is a cross-section parallel to the central axis of the photosensitive element 50.
  • the cross-sectional views that will appear hereinafter are all cross-sections parallel to the central axis of the photosensitive element 50, and will not be described again.
  • the photosensitive assembly 50 includes a circuit board 104, a photosensitive chip 103, a color filter 101, a ring-shaped support 102, a metal wire 105 (such as a gold wire), and an electronic component 107.
  • the outer contour 1041 of the surface of the circuit board 104 is a rectangular with a corner.
  • the schematic top view of the photosensitive component 50 of this embodiment still refers to FIG. 3. It should be noted that, for the sake of brevity, components such as the color filter 101, the metal wire 105, and the electronic component 107 are not shown in FIG. 3.
  • the photosensitive chip 103 has a rectangular photosensitive region 1031 and a non-photosensitive region 1032 surrounding the photosensitive region 1031.
  • the non-photosensitive region 1032 is provided with a bonding pad 1033, and the bonding pad 1033 is connected to the metal pad 105 through the metal wire 105.
  • the circuit board 104 is electrically connected.
  • An annular support 102 is disposed on the surface of the photosensitive chip 103 and surrounds the photosensitive region 1031.
  • the color filter 101 is fixed to the photosensitive chip 103 through the ring-shaped support body 102.
  • the annular support body 102 may be formed of a photoresist or a cured DAF adhesive.
  • DAF glue refers to the die-bonding film forming material, or it can be called the die-bonding film raw slurry.
  • the English name of the die-bonding film is Die Attach Film, which is abbreviated as DAF.
  • the electronic component 107 is disposed on the surface of the circuit board 104. Generally, the electronic component 107 is disposed outside the metal wire 105.
  • the electronic component 107 may be a capacitive component, a resistive component, or other electronic components 107 required in the camera module circuit.
  • the support is formed using a cured DAF glue, for example, a ring-shaped support 102 based on DAF glue is produced on the color filter 101 by a screen printing process (at this time, the ring-shaped support 102 is pre-cured, but It is still possible to restore the viscosity through the high-temperature hot-pressing process), and then align the color filter 101 with the photosensitive chip 103 and cover the surface of the photosensitive chip 103, and then make the DAF glue and the photosensitive chip 103 through steps such as high-temperature hot pressing and baking. The surface is adhered, so that the color filter 101 (the ring-shaped support body 102 based on the DAF glue) is adhered to the surface of the photosensitive chip 103.
  • a cured DAF glue for example, a ring-shaped support 102 based on DAF glue is produced on the color filter 101 by a screen printing process (at this time, the ring-shaped support 102 is pre-cured, but It is still possible to restore the viscosity through
  • a contact area between the support and the photosensitive chip 103 is smaller than a contact area between the support and the color filter 101.
  • the support body 102 has an inverted trapezoidal shape in a cross section passing through an axis of the photosensitive chip 103 (the axis is perpendicular to the surface of the photosensitive chip 103).
  • the inverted trapezoidal design in this embodiment can effectively prevent or reduce the shape of the support from being damaged during the forming process, and can reduce the pollution of the photosensitive chip 103 by the small particles formed during the forming process, thereby improving the product yield.
  • the inverted trapezoidal design in this embodiment also helps to reduce the lower surface of the support body, making it easier to accurately align the tiny area between the pad 1033 and the photosensitive area 1031, thereby avoiding or reducing the cause
  • the product defect caused by the inaccurate alignment of the color filter 101 and the photosensitive chip 103 is also adapted to the current development trend that the non-photosensitive area 1032 of the photosensitive chip 103 is gradually shrinking.
  • the support body 102 may be a black plastic material, so that the stray light reflected on the surface of the photosensitive chip 103 can be reduced, and the stray light can be further reduced in combination with the above-mentioned inverted trapezoidal design, thereby improving the imaging quality.
  • the ring-shaped support body 102 may be omitted, and the color filter 101 is attached to the surface of the photosensitive chip 103 through a transparent gel.
  • the edge area of the bottom surface of the color filter 101 is covered by the top surface of the ring-shaped support body 102 so that the edge area of the bottom surface of the color filter 101 is not exposed outside the outer side surface of the ring-shaped support body 102.
  • the “not exposed” can be understood as: the size of the edge region of the bottom surface of the color filter 101 exposed outside the outer side of the annular support body 102 is smaller than a preset threshold (the threshold can be determined according to the accuracy and / or tolerance of the corresponding manufacturing process) ).
  • the above “non-exposed” design can prevent the formation of a narrow semi-closed gap between the edge region of the bottom surface of the color filter 101, the outer side surface of the annular support body 102, and the edge region of the upper surface of the circuit board 104. If the above-mentioned semi-closed gap is formed, during the molding process, the punching of the molding material into this semi-closed gap may cause the color filter 101 to bulge, which will adversely affect the imaging effect and also cause color filtering. The sheet 101 is easily crushed by an indenter used in a molding process. Therefore, the solution of this embodiment helps to ensure the imaging quality of the camera module, and helps improve the production yield of the photosensitive component and the camera module.
  • the color filter 101 adopts a sunken design.
  • This solution can further reduce the distance from the center of the photosensitive region 1031 to the rounded corner of the mobile phone, so that the camera module 50 is closer to the rounded corner of the mobile phone. Then improve the overall visual effect of the front of the phone. At the same time, this solution also helps to reduce the height of the camera module 50.
  • consumers have higher and higher requirements for the imaging quality of mobile phone camera modules, and the color filter 101 has become standard for mainstream mobile phone products. In order to better show the difference between this embodiment and the traditional solution, a comparative example is introduced below for description.
  • FIG. 8 is a schematic cross-sectional view of a camera module according to a comparative example.
  • the camera module 60 of the comparative example includes a lens assembly 601 and a photosensitive assembly 602.
  • the photosensitive assembly 602 includes a conventional lens mount 6021, that is, the color filter 101 is attached to the lens mount 6021, which is referred to herein as
  • the color filter lens holder 6021 has a cylindrical shape on the bottom surface and is attached to the surface of the circuit board 104.
  • the upper surface (ie, the top surface) of the lens holder 3021 has a lens mounting surface, and the lens assembly 601 is mounted on the lens mounting surface of the lens holder.
  • the top of the lens holder 6021 extends inward (that is, extends toward the central axis of the photosensitive member 602) to form an extension portion 60211 for mounting the color filter 101, and the extension portion 60211 has a light through hole in the center.
  • the bottom surface of the lens assembly 601 is mounted on the top of the color filter lens holder 6021.
  • the color filter lens holder 6021 is usually made by injection molding process. Due to the limitation of the mold of the color filter lens holder, the lens holder must have a molding thickness, which leads to the height of the photosensitive module (refers to the size along the central axis of the photosensitive component).
  • the lateral size of the photosensitive member 602 refers to the dimension perpendicular to the central axis direction of the photosensitive member.
  • the color filter holder 6021 needs to avoid the electronic component 107 and the gold wire 105, the bottom surface of the extension 60211 must be higher than the top of the electronic component 107 and the gold wire 105, and a certain safety distance must be left to avoid damaging the electronics. Element 107 and gold wire 105.
  • the extension portion 60211 needs to have a certain thickness (the dimension of the extension portion 60211 in the direction of the central axis of the photosensitive member).
  • the above two points cause the height of the photosensitive component 602 to increase, which in turn causes the height of the camera module 60 to increase.
  • the lens holder 6021 not only supports the lens, but also needs to be attached to the color filter 101, The lateral size of the mount 6021 is limited by the width of the lens mounting surface and the mounting surface of the color filter 101, which in turn causes the lateral size of the photosensitive component 602 to increase. Further, in the scheme of FIG.
  • the color filter 101 is necessarily larger than the photosensitive area 1031 of the photosensitive chip 103, and a certain mounting area of the color filter 101 must be left around the periphery.
  • the top surface of the lens holder 6021 also needs to reserve the mounting area for the lens assembly, which makes it difficult to reduce the distance from the edge of the photosensitive area 1031 to the side of the lens holder, so it is difficult to make the notch 1042 (or chamfer).
  • the center (or optical center) of the light-sensitive area 1031 of the camera module 60 is further brought closer to the rounded corners of the mobile phone.
  • FIG. 9a shows a camera module based on the photosensitive assembly 50 shown in FIG.
  • the color filter 101 is attached to the photosensitive chip 103 through a ring-shaped support body 102 formed of a DAF adhesive or a photoresist, which can reduce the area and thickness of the color filter 101.
  • the color filter lens holder 6021 shown in FIG. 8 is no longer needed, so that the height of the photosensitive component can be reduced, and the height of the camera module can be further reduced.
  • the base of the lens assembly can directly bear on the surface of the circuit board 104 (as shown in FIG. 9a).
  • the camera module may further include a lens component lens holder for supporting the lens component (without the color filter 101 attached), and the lens component is supported by the lens component lens holder. Top. Since the lens holder in this embodiment no longer needs to support the color filter 101, part of the space on the top surface of the lens holder is released. The area originally used to support the color filter 101 can be used to support the lens assembly, so its height and lateral The size can be smaller than the traditional lens holder, thereby reducing the height of the photosensitive component and reducing the lateral size of the photosensitive component.
  • this embodiment can reduce the lateral size and height of the photosensitive component, and the color filter 101 is disposed on the surface of the photosensitive chip 103 without occupying the upper surface of the lens holder, the upper portion of the lens holder is used for The width of the adhesive glue attached to the lens holder is guaranteed, so that the lens holder can be designed to further reduce the distance from the center of the photosensitive area 1031 to the rounded corners of the mobile phone, so that the camera module is closer to the rounded corners of the mobile phone, thereby improving the front of the phone.
  • the lens component lens holder 6021 can be injection-molded.
  • the outer contour of the top surface of the lens component lens holder 6021 can be circular or a corner rectangle (Figure 9b shows a lens component with a top surface whose outline is a corner rectangle. A schematic plan view of the lens holder 6021), so as to fit the outer contour 1041 of the surface of the circuit board 104.
  • FIG. 10 is a schematic cross-sectional view of a camera module according to another embodiment of the present application.
  • This embodiment is characterized by having a molding portion 106 made by a molding process, thereby further reducing the lateral size of the photosensitive component.
  • this embodiment is different from the embodiment shown in FIG. 7 in that it includes a molding portion 106.
  • the center of the molding portion 106 has a light window corresponding to the photosensitive area 1031.
  • the molding part 106 is formed on the surface of the circuit board 104 by a molding process, surrounds the photosensitive chip 103 and extends toward the photosensitive chip 103 and contacts the photosensitive chip 103, and the molding part 106 may contact the photosensitive chip 103.
  • the side of the color filter 101 is characterized by having a molding portion 106 made by a molding process, thereby further reducing the lateral size of the photosensitive component.
  • this embodiment is different from the embodiment shown in FIG. 7 in that it includes a molding portion 106.
  • the top surface of the molding portion 106 is a flat surface suitable for bearing the lens holder. It may be a flat surface formed by die pressing, and the top surface of the molding portion 106 may be higher than the color filter.
  • the upper surface of the sheet 101 may be flush with the upper surface of the color filter 101.
  • the molding portion 106 may further cover at least a part of an edge region of the color filter 101.
  • the molding portion 106 may further cover the electronic component 107 and the metal wire 105.
  • the molding portion 106 may also contact the annular support body 102.
  • the upper mold, the circuit board 104, the photosensitive chip 103, the annular support 102, and the color filter 101 together form a molding cavity.
  • the lower mold bears on the bottom surface of the circuit board 104 to form a press fit with the upper mold (clamping) ).
  • the liquid molding material is injected into the molding cavity to form a molding portion 106 shown in FIG. 10.
  • FIG. 11 shows a schematic cross-sectional view of the camera module according to the embodiment of FIG. 10 in an embodiment of the present application.
  • the lens assembly rests on the top surface of the molding portion 106.
  • the lens holder of the lens assembly does not need to avoid the electronic component 107 and the metal wire 105 in the lateral direction (that is, a direction perpendicular to the central axis of the photosensitive component).
  • the center of the photosensitive area 1031 can be closer.
  • the mounting position of the lens holder can be further moved inward (that is, the side facing the central axis of the photosensitive component).
  • the bottom surface of the lens holder may partially overlap the edge region of the color filter 101 or the photosensitive chip 103 (for example, the non-photosensitive region 1032 of the photosensitive chip 103).
  • the partial overlap means that the bottom surface of the lens holder is partially overlapped with the edge region of the color filter 101 or the photosensitive chip 103 in a plan view. Therefore, this embodiment can help the outer side of the lens assembly (that is, the outer side of the lens holder) to be extremely close to the center of the photosensitive region 1031.
  • FIG. 12 shows a schematic top view of a photosensitive component in an embodiment of the present application.
  • the molded part 106 is shown in FIG. 12, and the outer contour of the photosensitive chip 103 covered by the molded part 106 is shown with a dotted line.
  • the outer contour of the top surface of the molding portion 106 of the photosensitive component is a notch rectangle that matches the shape of the surface of the circuit board. The concept of a notch rectangle is consistent with the notch rectangle of the outer contour of the circuit board, and will not be described again.
  • the minimum width of the top surface of the molding portion 106 (for example, the width corresponding to the notch 1042, and the section of the top surface of the molding portion 106 corresponding to the notch 1042 can also be called (Notched corner) is 0.15-0.35mm. Since the minimum width of the top surface of the molding portion 106 is generally located in the notch section, it can also be understood that the minimum width of the notch section is 0.15-0.35mm. Based on the advantages of the molding section 106, this embodiment can further bring the center of the photosensitive region 1031 closer to the rounded corners of the mobile phone, thereby making the front appearance of the mobile phone more visually impactful.
  • FIG. 13 shows a schematic top view of the photosensitive component after the molding part is removed according to an embodiment of the present application.
  • neither the electronic component 107 nor the metal wire 105 is disposed in a region of the circuit board 104 having the notch 1042. In this way, it is easy to form the corner of the molding portion 106, so that the center of the photosensitive region 1031 is extremely close to the rounded corner of the frame of the mobile phone.
  • Fig. 14 shows a schematic cross-sectional view at the AA 'section of Fig. 13.
  • the center of the photosensitive area 1031 (the optical center or optical axis of the lens is usually aligned with the center of the photosensitive area 1031) can be extremely close to the rounded corners of the mobile phone, thereby making the front appearance of the mobile phone more visually impactful.
  • the corner of the color filter holder is The cutting of the area may expose the photosensitive chip 103 to the outside, resulting in defective photosensitive components. Therefore, the center of the photosensitive area 1031 cannot be extremely close to the rounded corner of the frame of the mobile phone by forming the notch 1042.
  • the color filter lens holder is thickened before cutting, the effect that the center of the photosensitive region 1031 is extremely close to the rounded corners of the mobile phone cannot be achieved.
  • FIG. 16 shows a schematic top view of a photosensitive component according to another embodiment of the present application.
  • an outer contour of the circuit board 104 or the molding part 106 forms a notch rectangle
  • the notch rectangle has two notches 1042
  • the two notches 1042 are at mutually diagonal positions.
  • This solution not only makes the center of the photosensitive area 1031 of the camera module closer to the rounded corners of the mobile phone, but also makes it easier to avoid the display screen and further increase the screen ratio and visual effect.
  • the notched rectangle may also have more notches 1042.
  • the molding portion 106 and the circuit board 104 form a combined body, the combined body has an outer side surface, and the outer side surface includes an indentation indented toward the photosensitive chip 103 direction.
  • Surface 1041, and one end of the retracted surface is located on a bottom surface of the circuit board 104.
  • the retracted surface 1041 is disposed at a position corresponding to the notch.
  • the frame of the mobile phone case is also curved or has curved segments in the side view.
  • FIG. 35 illustrates a side cross-sectional view of a mobile phone in an embodiment of the present application.
  • the design of the indented surface can prevent the arc segment from interfering with the bottom of the camera module, so that the center of the photosensitive area 1031 of the camera module is closer to the frame of the mobile phone, which can further make the camera
  • the center of the photosensitive area 1031 of the module is close to the rounded corners of the mobile phone.
  • the indented surface can be made by various removal processes such as cutting or grinding.
  • the indented surface may be a step-shaped bent surface or an inclined surface.
  • the indented surface may be constituted only by the surface on the circuit board 104 (for example, only a part of the circuit board 104 is cut away and the bottom surface of the molding portion 106 is not exposed), or it may be formed by the surface on the circuit board 104.
  • the molding portion 106 It may be formed together with a surface located on the molding portion 106 (for example, the circuit board 104 is cut off and a part of the bottom surface of the molding portion 106 is exposed), and the interface between the circuit board 104 and the molding portion 106 may be crossed ( (For example, an indented surface formed by cutting out both the circuit board 104 portion and the molding portion 106 at the same time).
  • the camera module includes a lens component and a photosensitive component.
  • the lens assembly includes a cylindrical lens mount and an optical lens mounted inside the cylindrical lens mount.
  • the bottom surface of the cylindrical lens holder bears on and is fixed to the top surface of the molding portion 106 of the photosensitive component.
  • the thickness of the side wall of the cylindrical lens holder is uneven in each direction to fit the notch 1042 of the circuit board 104 and the molding part 106, so that the center of the photosensitive area 1031 (or the optical center of the lens) is closer to the mobile phone. Rounded corners.
  • the photosensitive component may not have the molding part 106.
  • the bottom surface of the cylindrical lens holder is abutted and fixed on the circuit board 104 of the photosensitive component, wherein the thickness of the side wall of the cylindrical lens holder is uneven.
  • the center of the photosensitive area 1031 (or the optical center of the lens) is closer to the rounded corner of the mobile phone.
  • a terminal device such as a mobile phone
  • a terminal device which includes a housing and a camera module.
  • the housing has a rounded rectangular shape, and the camera module is installed in the housing.
  • One of the notches 1042 of the circuit board 104 is disposed at a position corresponding to one of the rounded corners of the housing.
  • a method for manufacturing a photosensitive component includes the following steps:
  • a photosensitive chip 103 is mounted on the surface of the circuit board 104, wherein the photosensitive chip 103 has a rectangular photosensitive region 1031 and a non-photosensitive region 1032 surrounding the photosensitive region 1031.
  • the outer contour of the surface of the circuit board 104 is rectangular, at least one corner of the surface of the circuit board 104 is set as a reserved area 1043, and the reserved area 1043 is not wired.
  • FIG. 17 shows a schematic top view of a printed circuit board 104 after a photosensitive chip 103 is mounted on the surface of the circuit board 104 in an embodiment of the present application.
  • the reserved area 1043 may be removed by cutting, and the cutting process may be cutting, sawing, punching, or laser cutting. In another embodiment, the reserved area 1043 may be removed by grinding, so that the notch rectangle has a chamfer.
  • step 1) may include sub-steps 11) and 12). Steps 11) and 12) are as follows:
  • the color filter 101 is attached to the photosensitive chip 103 through a ring-shaped support body 102, wherein the ring-shaped support body 102 is disposed on a surface of the photosensitive chip 103 and surrounds the photosensitive region 1031.
  • the combination of the color filter 101 and the photosensitive chip 103 is mounted on a surface of the circuit board 104, wherein a back surface of the photosensitive chip 103 is attached to a surface of the circuit board 104.
  • step 1a) may also be performed.
  • FIG. 18 shows a schematic top view of a semi-finished product after step 1a) is completed in an embodiment of the present application. Referring to FIG. 18, step 1a) is as follows:
  • a metal wire 105 is connected between the pad 1033 and the circuit board 104 so that the circuit board 104 is electrically connected to the photosensitive chip 103, and the metal wire 105 avoids the reserved area 1043 .
  • step 1b) may be performed after step 12) is completed and before step 2).
  • FIG. 19 shows a schematic top view of a semi-finished product after step 1b) is completed in an embodiment of the present application. Referring to FIG. 19, step 2b) is as follows:
  • a molding portion 106 on the surface of the circuit board by a molding process, the molding portion 106 surrounding the photosensitive chip 103 and extending toward the photosensitive chip 103 and contacting the photosensitive chip 103, and the The molding portion 106 covers the electronic component 107 and the metal wire 105 and covers at least a part of the edge area of the upper surface of the color filter; and the top surface of the molding portion 106 is formed by die pressing.
  • a flat surface, and a top surface of the molding portion 106 is higher than an upper surface of the color filter.
  • the step 2) further includes: cutting or grinding the assembly formed by the molding portion 106 and the circuit board 104 so that the outer contour of the top surface of the molding portion 106 is formed.
  • FIG. 20 is a schematic diagram of cutting or grinding the assembly formed by the molding portion 106 and the wiring board shown in FIG. 19.
  • a processing line 1045 of the removal process is shown therein. The removal process may be cutting or grinding.
  • FIG. 21 is a schematic perspective view of a photosensitive component after cutting or grinding the assembly formed by the molding portion 106 and the circuit board 104 according to an embodiment of the present application.
  • FIG. 22 shows a schematic plan view without perspective corresponding to FIG. 21, in which the electronic component 107 and the metal wire 105 are not shown. Actually, both the electronic component 107 and the metal wire 105 are covered by the molding part 106. In the embodiment shown in FIG. 21 and FIG. 22, the notch 1042 processed by the removal process is a chamfer.
  • FIG. 23 is a schematic perspective view of a photosensitive component after cutting the assembly formed by the molding portion 106 and the circuit board 104 in another embodiment of the present application. The electronic component 107 and the metal wire 105 are shown.
  • FIG. 24 shows a schematic plan view without perspective corresponding to FIG. 23, in which the electronic component 107 and the metal wire 105 are not shown. In the embodiments shown in Figs. 23 and 24, the cutting surface is an inclined surface.
  • the step 1b) may be performed after the step 2), and the step 1b) further includes: forming an outer contour of the top surface of the molding part 106 directly with the circuit through a molding process.
  • the rectangular shape of the surface of the plate 104 matches the notch.
  • FIG. 25 illustrates a molding portion 106 having a rectangular outer contour with a cutout formed by a molding process in an embodiment of the present application. The notched rectangular outer contour may be based on the formation of the mold. Further, a part of the circuit board 104 can be removed along the chamfering process line 1045 shown in FIG. 25.
  • FIG. 26 is a schematic top view of the photosensitive component after a part of the circuit board 104 is removed.
  • the circuit board 104 with a notch 1042 may be manufactured first, and then the molding part 106 is molded, and the outer contour A notch rectangle with a matching shape on the surface of the circuit board 104.
  • FIG. 27 shows a circuit board 104 with a notch and a photosensitive chip 103, an electronic component 107, and a metal wire 105 disposed on the surface thereof in an embodiment of the present application, wherein a color filter is attached to the photosensitive chip 103 to form a photosensitive member.
  • the combination of the component and the color filter is for simplicity of illustration, and the color filter is not shown in FIG. 27.
  • FIG. 28 is a schematic diagram of molding a molding portion 106 on a circuit board 104 with a corner in an embodiment of the present application.
  • a crimp edge 1046 provided in an edge region of the circuit board 104 is shown in FIG. 28.
  • the pressing edge 1046 is provided to form a tight pressing state in a molding process.
  • the upper mold and the pressing edge 1046 can bear against each other and be tightly pressed together, thereby forming a sealed forming cavity for forming the molding portion 106.
  • the liquid molding material can be prevented from leaking to the bottom surface of the circuit board 104, and at the same time, the shape of the molding portion 106 obtained after molding can be guaranteed to be as expected.
  • a part of the pressing edge 1046 can be cut by a cutting process to reduce the size of the camera module in a direction perpendicular to the optical axis.
  • a photosensitive component includes:
  • FIG. 29 shows a circuit board mother board 1040 in an embodiment of the present application. Top view schematic. Referring to FIG. 29, the surface of the circuit board mother board 1040 includes a plurality of rectangular circuit board 104 areas, wherein at least one corner of each circuit board 104 area is set as a reserved area, and the reserved area is not wired. Also shown in FIG. 29 are the connection band 104a and the connector 104b.
  • the photosensitive chip 103 has a rectangular photosensitive region 1031, and a non-photosensitive region 1032 surrounding the photosensitive region 1031. The non-photosensitive region 1032 is provided with a solder pad 1033.
  • the annular support body 102 is disposed on the photosensitive chip 103. The surface of the photoresistor 1031 and surrounding the photosensitive area 1031.
  • FIG. 30 shows a schematic diagram after a plurality of assemblies are separately installed in each circuit board 104 area of the circuit board mother board 1040 in an embodiment of the present application.
  • An electronic component 107 is installed in each of the areas of the circuit board 104, and the electronic component 107 avoids the reserved area 1043.
  • FIG. 31 is a schematic diagram showing an integrated molding layer formed on a surface of the circuit board mother board 1040 by a molding process in an embodiment of the present application.
  • FIG. 32 is a schematic diagram of a photosensitive product semi-finished product obtained by cutting an assembly formed by the circuit board mother board 1040 and the molding layer 106 into a single unit according to an embodiment of the present application.
  • FIG. 33 is a schematic diagram showing that the outer contour of the surface of the photosensitive component is a rectangle with a missing corner by a removal process in an embodiment of the present application. In this embodiment, each semi-finished product of the photosensitive member is individually cut.
  • FIG. 34 is a schematic diagram showing that the outer contour of the surface of the photosensitive component is a rectangle with a missing corner by a removal process in another embodiment of the present application. In this embodiment, a plurality of semi-finished products of photosensitive components are arranged at a predetermined angle, and a plurality of photosensitive components whose outer contours are in a rectangular shape with cut edges are obtained by one cutting.
  • FIG. 37 is a schematic cross-sectional view of a camera module 300 according to an embodiment of the present application.
  • the cross section refers to a cross section passing through the optical axis of the camera module 300.
  • the camera module 300 includes a photosensitive component 100 and a lens component 200.
  • the photosensitive module 100 includes a circuit board 104 and a photosensitive chip 103.
  • the photosensitive chip 103 is mounted on the surface of the circuit board 104.
  • the surface of the photosensitive chip 103 has a photosensitive region 1031 (the center of the photosensitive region 1031 is opposite to the circuit board).
  • the center of 104 may have an offset).
  • the lens assembly 200 includes an optical lens 202 and an outer lens barrel 201.
  • the optical lens 202 is installed inside the outer lens barrel 201.
  • FIG. 38 is a schematic cross-sectional view of a photosensitive assembly 100 in an embodiment of the present application.
  • the photosensitive assembly 100 may include a circuit board 104, a photosensitive chip 103, a ring-shaped support 102, a color filter 101, and a molding part 106.
  • the ring-shaped support 102 is disposed on the surface of the photosensitive chip 103 and surrounds the photosensitive region 1031.
  • the color filter 101 is fixed to the photosensitive chip 103 through the ring-shaped support body 102.
  • the photosensitive chip 103 may further include a solder pad 1033 surrounding or partially surrounding the outside of the photosensitive chip 1031; and, a region between the photosensitive region and a side of the photosensitive chip is a non-photosensitive region 1032, and the solder is provided thereon.
  • the non-photosensitive area 1032 of the pad 1033, and the contact surface between the ring-shaped support body 102 and the photosensitive chip 103 is located between the bonding pad 1033 and the photosensitive area 1031; and the bonding pad 1033 can pass through the metal wire 105 (Eg, a gold wire) is electrically connected to the circuit board 104.
  • the photosensitive assembly 100 may further include an electronic element 107 (for example, a capacitor element or a resistance element) formed on a surface of the circuit board 104, and the molding portion 106 may cover the metal wire 105 and the electronic element 107.
  • the color filter is attached to the photosensitive chip through the ring-shaped support. This scheme is different from the scheme of installing the color filter on the molding part (or other type of lens holder). Since the molding part of this embodiment does not need to reserve a sticking width for installing a color filter, the lens holder can be retracted internally, so that a narrow side is made on the top surface of the lens holder, so that the camera module can be set. Move closer to the top frame of the terminal.
  • the molding part in this embodiment may be replaced by other types of lens holders.
  • an injection lens holder may be used.
  • the lens holder may be injection-molded and installed on the surface of the circuit board and surround the lens holder.
  • the annular support body may be omitted, and the color filter is attached to the surface of the photosensitive chip through a transparent gel.
  • the edge region of the bottom surface of the color filter 101 is covered by the top surface of the ring-shaped support body 102 so that the bottom surface of the color filter 101 is not exposed outside the outer side surface of the ring-shaped support body 102.
  • the “not exposed” can be understood as: the size of the edge region of the bottom surface of the color filter 101 exposed outside the outer side of the annular support body 102 is smaller than a preset threshold (the threshold can be determined according to the accuracy and / or tolerance of the corresponding manufacturing process) ).
  • the above “non-exposed” design can prevent the formation of a narrow semi-closed gap between the edge region of the bottom surface of the color filter 101, the outer side surface of the annular support body 102, and the edge region of the upper surface of the circuit board 104. If the above-mentioned semi-closed gap is formed, during the molding process, the punching of the molding material into this semi-closed gap may cause the color filter 101 to bulge, which will adversely affect the imaging effect and also cause color filtering. The sheet 101 is easily crushed by an indenter used in a molding process. Therefore, the solution of this embodiment helps to ensure the imaging quality of the camera module, and helps improve the production yield of the photosensitive component and the camera module.
  • FIG. 39 shows a schematic top view of a circuit board 104 and a photosensitive chip 103 of the photosensitive module 100 according to an embodiment of the present application.
  • FIG. 40 shows a schematic top view of the circuit board 104 and the photosensitive chip 103 after the color filter 101 is added to FIG. 39.
  • FIG. 41 shows a schematic top view of the photosensitive assembly 100 after the molding part 106 is added to FIG. 40.
  • the circuit board 104 may have at least one first terminal bearing side, and no electronic component is provided in a region between the photosensitive chip 103 and the first terminal bearing side. 107, so that the center of the photosensitive region 1031 is offset from the center of the circuit board.
  • An outer side surface of the molding portion 106 may include a second terminal bearing side surface 1062, and the second terminal bearing side surface 1062 is flush with the first terminal bearing side surface 1041.
  • An extremely narrow side 108 will be formed between the first terminal bearing side 1041 (or the second terminal bearing side 1062) and the photosensitive area 1031, so that the first terminal bearing side 1041 (or the first The second terminal bearing side 1062) can be set closer to the top frame of the terminal device, thereby increasing the screen ratio.
  • the side surface of the molding portion 106 is generally an inclined surface.
  • the first terminal bearing side 1041 and the second terminal bearing side 1062 can be formed by cutting the assembly of the circuit board 104 and the molding part 106 after molding 106 once. Avoiding the above-mentioned demolding bevel on the outer side of the molding portion 106 and the pressing edge on the circuit board 104, so that the distance between the side of the circuit board 104 and the center of the photosensitive region 1031 is reduced, thereby increasing the screen ratio of the mobile phone. In another embodiment, only the circuit board may be cut.
  • the side surface of the first terminal bearing is a cutting surface formed by cutting the circuit board, and the side surface of the second terminal bearing still has a draft surface, and the draft surface is all retained (in this embodiment, the draft surface is inclined).
  • the degree is generally about 7 °, and does not increase much width).
  • the side surface of the first terminal bearing is a cutting surface formed by cutting the circuit board, and the draft bevel can be partially cut off.
  • the circuit board is cut from the back surface to form a corresponding cut surface. Cutting from the back, on the one hand, does not require a safety distance, and on the other hand, a recessed surface located on the inside of the molding section can be cut at the edge of the circuit board.
  • the first terminal bearing side 1041 and the second terminal bearing side 1062 are adapted to bear the top frame (ie, the top frame 304) of the terminal (such as a mobile phone). Since the center of the photosensitive region 1031 is closer to the top frame 304 of the mobile phone, the design of this embodiment can increase the screen ratio of the mobile phone. At the same time, this embodiment also considers the structural strength and structural stability of the camera module 300, which can ensure the stable and reliable structure of the optical path of the camera module 300, which is suitable for mass production. In addition, the camera module 300 of this embodiment can be implemented based on mature process means, which helps to improve product yield.
  • the center of the photosensitive region 1031 may be offset from the center of the photosensitive chip 103, thereby further increasing the screen ratio of the mobile phone.
  • the side of the photosensitive chip 103 corresponding to the first terminal bearing side 1041 is not provided with the bonding pad 1033 and the metal wire 105, Thereby further increasing the screen ratio of the mobile phone.
  • the top surface 1061 of the molding portion is a flat surface formed by die pressing, and the top surface 1061 of the molding portion is higher than the color filter The upper surface of the sheet 101.
  • the molding portion 106 has an inner side surface 1063, the inner side surface 1063 forms a light window, and the light passing surface of the light window gradually decreases from top to bottom.
  • the molding portion 106 has an inner side surface 1063, and the inner side surface 1063 extends inward from the top surface 1061 of the molding portion to form a draft slope.
  • the ring-shaped support body 102 is formed on the photosensitive chip 103 or the color filter 101 by a photoresist, and is attached to the color filter 101 or the photosensitive layer by an adhesive. Chip 103.
  • the ring-shaped support body 102 is formed of a die-bonding film molding material, and the lower surface of the ring-shaped support body 102 is in contact with and adhered to the photosensitive chip 103. Surface, and the upper surface of the ring-shaped support body 102 is in contact with and adhered to the lower surface of the color filter 101.
  • a contact area between the support and the photosensitive chip 103 is smaller than a contact area between the support and the color filter 101.
  • the support In a cross section passing through the axis of the photosensitive chip 103, the support is formed into an inverted trapezoidal shape.
  • FIG. 42A illustrates a schematic bottom view of the outer lens barrel 201 with non-uniform sidewall thicknesses in one embodiment of the present application.
  • the outer lens barrel 201 may have an adapting section 201a, and the adapting section 201a may correspond to an extremely narrow side of the top surface of the photosensitive member.
  • the adaptation section 201a of the side wall of the outer lens barrel 201 can be formed by cutting a cylinder with a uniform thickness of the side wall. After cutting, the wall thickness of the adapting section can be made smaller than the wall thickness of other parts of the side wall of the outer lens barrel 201.
  • the adapting section 201a may also be formed by grinding, so that the wall thickness of the adapting section 201a is smaller than the wall thickness of other parts of the side wall of the outer lens barrel 201.
  • the outer lens barrel 201 may also be a cylinder with a uniform sidewall thickness, as long as the bottom width of the outer lens barrel 201 is adapted to the extremely narrow side of the photosensitive component.
  • FIG. 42B is a schematic bottom view of the outer lens barrel 201 with non-uniform sidewall thicknesses in another embodiment of the present application.
  • a side wall of the outer lens barrel 201 may have an adapting section 201 a, and a wall thickness of the adapting section 201 a is smaller than a wall thickness of other parts of the side wall.
  • the bottom surface of the adapting section 201 a bears and is fixed to the top surface of the molding portion 106 between the second bearing surface and the light window.
  • the optical lens 202 includes a lens barrel 2021 and a lens group 2022 installed in the lens barrel 201, and an outer side surface of the lens barrel 2021 is fixed to an inner side surface of the outer lens barrel 201.
  • the outer side surface of the lens barrel 2021 may be fixed to the inner side surface of the outer lens barrel 201 by means of screw connection.
  • the lens barrel 2021 and the outer lens barrel 201 may also be combined into one, that is, the two may be integrally formed.
  • a lens group 2022 can be directly mounted on an inner side surface thereof.
  • the outer lens barrel 201 integrally formed with the lens barrel 2021 still has side walls of different thicknesses, so that the center of the optical lens 202 is aligned with the center of the photosensitive region 1031.
  • FIG. 43 is a schematic partial cross-sectional view of a mobile phone according to an embodiment of the present application.
  • the mobile phone (or other smart terminal device) includes a camera module 300, a display panel 301, a transparent cover plate 302, a top frame 304, and a back case 305.
  • the transparent cover plate 302, the top frame 304, and the back case 305 constitute a part of the mobile phone case.
  • the camera module 300 includes a photosensitive assembly 100 and a lens assembly 200.
  • the photosensitive module 100 includes a circuit board 104 and a photosensitive chip 103.
  • the photosensitive chip 103 is mounted on the surface of the circuit board 104.
  • the surface of the photosensitive chip 103 has a photosensitive region 1031 and the center of the photosensitive region 1031 is opposite to the circuit board.
  • the center of 104 has an offset, and the direction of the offset is a direction toward the top frame 304.
  • the lens assembly 200 includes an optical lens 202 and an outer lens barrel 201.
  • the optical lens 202 is mounted on the inner side of the outer lens barrel 201, and the outer lens barrel 201 has side walls of different thicknesses so that the center of the optical lens 202 is aligned with the center of the photosensitive area 1031 .
  • the front camera module 300 may use the camera module 300 described in any of the foregoing embodiments.
  • the circuit board 104 may have at least one first terminal bearing side 1041, and an area between the photosensitive chip 103 and the first terminal bearing side 1041 The electronic component 107 is not provided so that the center of the photosensitive region 1031 is offset from the center of the circuit board 104.
  • An outer side surface of the molding portion 106 may include a second terminal bearing side surface 1062, and the second terminal bearing side surface 1062 is flush with the first terminal bearing side surface 1041.
  • the first terminal bearing side 1041 and the second terminal bearing side 1062 may bear on the inner side of the frame through a buffer layer (not shown in FIG. 43).
  • the area of the camera module 300 close to the top frame 304 is reduced (the reduced area is shown by the dotted frame in FIG. 43), so that the lens light path is closer to the top frame of the mobile phone, and the center of the photosensitive area 1031 and the mobile phone The distance of the top frame 304 is reduced, thereby increasing the screen ratio.
  • FIG. 44 is a schematic diagram showing a comparison between a mobile phone based on the conventional camera module 300 and a mobile phone based on the improved camera module 300 according to an embodiment of the present application. It can be seen that the distance H1b of the edge of the photosensitive area 1031 of the improved camera module 300 from the outer side of the camera module 300 near the side of the mobile phone top frame 304 is significantly smaller than the distance of the edge of the photosensitive area 1031 of the conventional camera module 300 from the camera module 300. The distance H1a on the outer side of the top frame 304 side of the mobile phone. The edge of the display panel 301 of the mobile phone based on the improved camera module 300 advances the distance D to the top frame 304 of the mobile phone.
  • the top of the circuit board represents the part of the surface of the circuit board that is close to the top frame of the mobile phone, and the side, middle, and bottom are defined as such;
  • “Move up”, “Offset”, etc. represent the process or state where the center of the module's photosensitive area or optical axis deviates from the center of the circuit board;
  • “Sinking” means that the height of the module decreases from the screen to the back cover (that is, the back shell) in the thickness direction of the mobile phone;
  • Mobile phone lateral direction represents the short side direction of the phone
  • Mobile phone vertical direction represents the long side direction of the phone
  • the "photosensitive component top edge part” represents the part of the photosensitive component near the top frame of the mobile phone, and thus defines other parts.
  • the capacitor device and the bond wire (ie metal wire) on the top of the circuit board are first removed, which can be redesigned and led to other sides. It is known that the capacitor device Hebang line can be led to the bottom of the circuit board, or scattered to the side of the circuit board. At this time, the optical system can be moved up.
  • the distance between the photosensitive component and the top frame 304 of the mobile phone is determined by the distance H of the photosensitive chip photosensitive area from the top frame 304.
  • H is determined by the distance H1 of the photosensitive chip photosensitive area from the edge of the module and the edge of the module from the top of the mobile phone.
  • the distance H2 of the frame is used.
  • the distance H2 is generally used to fill the buffer material to fix the component and prevent the component from falling off due to vibration or bump. It is a necessary safety distance for the assembly process of the mobile phone. Therefore, only the effect of the distance H1 on the upward movement of the optical system can be discussed.
  • FIG. 45 shows a photosensitive assembly having a color filter lens holder. It has an unconventional non-uniform lens holder, that is, a frame with different widths.
  • the design of the central light-transmitting area of the color filter lens holder is determined by the position of the photosensitive chip, and the size and shape of the frame is determined by the size of the circuit board and the photosensitive chip. decided together.
  • the width of the upper surface of the color filter lens holder is h1
  • the IR filter ie, the color filter
  • the IR filter is attached with a safety distance d2
  • the IR filter is attached with a width d3. It can be seen that, under the limit conditions, the IR filter When the light-transmitting area of the sheet and the light-sensitive area of the photosensitive chip are large, the above-mentioned distance H1 is:
  • H1 h1 + d2 + d3;
  • FIG. 46 shows a molded body photosensitive member without a color filter holder. Unlike the example shown in FIG. 45, it uses a molded body structure instead of the injection-molded color filter holder. It has a first step A and a second step B. The first step A has a height a relative to the upper surface of the photosensitive chip, and the second step B has a height b relative to the upper surface of the first step. , IR filter attaching safety distance d2, IR filter attaching width d3 and the draft angle ⁇ exist. At this time, the above-mentioned distance H1 is:
  • H1 d1 + btan ⁇ + d2 + d3 + atan ⁇ ;
  • the molding structure is It has advantages in terms of size and accuracy, but it is also difficult to effectively reduce the lens attachment width d1, IR filter attachment safety distance d2, IR filter attachment width d3, and draft angle ⁇ in this structure. Distance H1.
  • the first step and the second step the first step is used to carry the IR filter, and the height a is the lowest height that can be formed by the molding process; the second step is used to carry the lens assembly, and the height is, for example, It is larger than the thickness of the filter to prevent the filter from being scratched when attaching the lens component.
  • the two are integrated by the molding process.
  • the lens attaching width is the width required when attaching the lens component (dispensing).
  • the IR filter has the greatest effect on the distance H1, and the attachment safety distance d2 and the attachment width d3 restrict the reduction of the distance H1.
  • FIG. 47 is a schematic cross-sectional view of a photosensitive component according to an embodiment of the present application.
  • the structure includes a photosensitive chip, a molding part, and an IR filter.
  • the IR filter may be as large as the photosensitive chip.
  • the IR filter and the photosensitive chip may be connected through a ring-shaped boss (that is, a ring-shaped support portion).
  • the ring-shaped boss may be a photoresist formed on the photosensitive region of the photosensitive chip and the chip pad (that is, a solder pad) by a photolithography process.
  • the boss is bonded to the IR filter by glue after being formed, and the glue may be thermosetting, ultraviolet or thermosetting-ultraviolet glue; on the other hand, the annular boss may also be formed on The corresponding position on the IR filter is connected to the photosensitive chip by the same method as described above.
  • the boss is formed by adhering a DAF glue (ie, a die-bonding film molding material) having a boss shape.
  • the DAF glue has thermosetting property, and is adhered by heating after being attached to a target.
  • the DAF adhesive can be made on the IR filter by a screen printing process to form the annular boss, and then align with the photosensitive chip, and directly attach the surface of the annular boss to the hot-pressing process. Finally, on the photosensitive chip, the IR filter and the annular protrusion formed by the DAF glue are permanently fixed together by baking.
  • the combination of the photosensitive chip and the color filter can be formed by a wafer-level process.
  • One method is:
  • H1 d1 + (ah IR -h boss ) tan ⁇ ;
  • a wire bonding (for example, “gold wire”) operation is performed to electrically connect the photosensitive chip and the circuit board. It can be understood that no bonding operation is performed on the top of the circuit board.
  • the molded body covers the side of the photosensitive system and covers the part of the IR filter that corresponds to the non-photosensitive area of the photosensitive chip.
  • D1 is the aforementioned lens attachment width, which is the lens attachment (point Glue) required minimum width; ⁇ is the draft angle.
  • the mold body needs to be released after curing to separate the mold from the mold body.
  • an inclined surface is often set. The inclined surface is at an angle to the draft direction, which is called the draft angle.
  • a is the height of the first step, which is The vertical height from the chip surface to the top surface of the mold is also the lowest height that can be formed by the molding process; IR filter (thickness: h IR ); ring boss (height: h boss ).
  • the maximum thickness of the molded body on this surface is d1 + (ah IR -h boss ) tan ⁇ .
  • This thickness is the horizontal distance from the chip's photosensitive area to the edge of the circuit board, that is, the extreme position of the photosensitive system in the vertical direction of the mobile phone. .
  • the IR filter is no longer limited by the distance H1, and the IR filter and the photosensitive chip can be regarded as "integrated".
  • the IR filter attachment safety distance d2, IR filter attachment width d3, etc. are no longer related to the distance H1, and the aforementioned limiting factors are fundamentally separated.
  • only the lens attachment width d1 and the draft angle ⁇ are affected by the distance H1, so the distance H1 is effectively reduced.
  • the lens barrel structure of the front camera module of a mobile phone is mostly step-shaped.
  • the IR filter is directly attached to the non-photosensitive area of the photosensitive chip through a ring-shaped boss.
  • the thickness of the IR filter is reduced, and the annular boss that functions as the IR filter also has a very low micron-level height.
  • the IR filter is changed from the original
  • the adhesive is sunk above the structure until it is wrapped inside the molded body by the side.
  • the height of the photosensitive structure is reduced from two aspects. Then, the lens component (ie, the optical structure) carried on the photosensitive component can also sink to the corresponding height.
  • the sinking reduces the structural height and also reduces the module size of the original plane.
  • the structure sinking height exceeds the stepped lens barrel described above, In the case of a step, correspondingly, the screen area can be pushed forward by a corresponding distance, thereby further reducing the module's screen ratio (as shown in Figure 44).
  • the lens assembly may include an optical lens and an outer lens barrel.
  • the uniform optical lens is fixed inside the uniform outer lens barrel by means of locking or assembly, and its optical center is the geometric center of the lens assembly.
  • the outer lens barrel is designed such that a portion of the outer lens barrel corresponding to the extremely narrow side of the photosensitive member has a thinner lens barrel wall, and other portions have relatively thicker lens barrel walls.
  • the wall of the lens barrel corresponds to the non-top edge portion of the photosensitive structure.
  • the uniform lens barrel is set in an outer lens barrel with an uneven wall thickness, and is attached to the photosensitive structure through a lens assembly to realize the shift of the overall optical system.
  • the above-mentioned outer lens barrel with a non-uniform structure is generally injection-molded by a mold that also has a non-uniform structure.
  • the lens barrel is formed by cutting and grinding an existing outer lens barrel. It can be understood that the formation process of the outer lens barrel corresponds to the structure of the photosensitive component, especially in the direction of the top frame of the mobile phone, so that the outer wall of the photosensitive structure and the outer wall of the optical structure coincide in this direction.
  • the above-mentioned forming method is only for the outer side wall of the lens barrel, and the inner side wall thereof is preferably kept unchanged, that is, the optical system of the lens does not need to be changed.
  • the camera module of the present application further moves up the optical system and reduces the module height. Therefore, the screen ratio of the current smart phone can be greatly increased, and it is more suitable for compact mobile phone internal design. It can be understood that, as a camera module for increasing the proportion of the display area, this application can also be applied to other devices and occasions other than mobile phones.

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Abstract

本申请提供了一种感光组件,包括:感光芯片;以及线路板,感光芯片安装于线路板的表面,线路板的表面的外轮廓呈缺角矩形,并且缺角矩形具有至少一个缺角。本申请还提供了相应的摄像模组及终端设备和感光组件及摄像模组的组装方法和智能终端设备。本申请可以减小感光区域中心与手机边框圆角的距离,提高屏幕占比,可降低模组高度,并改善手机正面的整体视觉效果。

Description

感光组件、摄像模组及相应的终端设备和制作方法
交叉引用
本申请要求于2018年6月21日向中国专利局提交的、发明名称为“感光组件、摄像模组及相应的终端设备和制作方法”的第201810643832.3号发明专利申请、于2018年6月21日向中国专利局提交的、实用新型名称为“感光组件、摄像模组及相应的终端设备”的第201820958435.0号实用新型专利申请、于2018年6月21日向中国专利局提交的、发明名称为“感光组件、摄像模组及智能终端设备”的第201810643308.6号发明专利申请、于2018年6月21日向中国专利局提交的、实用新型名称为“感光组件、摄像模组及智能终端设备”的第201820958434.6号实用新型专利申请的优先权,上述专利申请的全部内容通过引用并入本文。
技术领域
本申请涉及光学技术领域,具体地说,本申请涉及感光组件、摄像模组及相应的终端设备和制作方法。
背景技术
随着智能手机及其他电子设备的飞速发展,由于手机屏幕越来越趋向于全面屏化、轻薄化,因此对摄像模组的小型化需求越来越强烈。其中,全面屏设计是通过提升显示区在手机前面板的占比来达成科技感十足的显示效果,而随着潮流而来的则是前面板的工艺设计及器件布局问题。
智能手机前面板的非显示区具有前置摄像头(即摄像模组)、听筒、距离感应器、光线感应器、功能按键、指纹识别区等,为了提升屏占比,上述器件所占用的面积必须被缩小,为此,多种解决方案被提出。例如微缝听筒、手势操作、屏下指纹等,但作为最大的痛点,前置摄像头因其无可替代性而始终无法出现有效的可行的解决方案。
另一方面,人们对手机摄像头的成像质量要求越来越高,摄像头光学结构的尺寸难以缩小。并且,由于摄像头是精密的光学系统,包括多个透镜组成的镜片组、滤色片、感光芯片等诸多光学器件。这些 光学器件需要相应的结构件来支撑和固定以保证光路的稳定性和可靠性。这些结构件将不可避免地占据一定空间。再者摄像头还需要具备相应的电路结构以输出图片数据,因此线路板、电子元件等也会占据一定空间。合理地对摄像头的内部结构进行布局以提高智能终端设备的屏占比,是当前市场上迫切需要解决的问题之一。
人们期待智能手机的屏幕显示区尽可能地接近手机顶框,然而前置摄像头(即摄像模组)的存在导致屏幕显示区必须做出相应的避让,这导致手机的屏占比受限,影响了的视觉效果。一种解决思路是将前置摄像头设置在手机的角落处。图1示出了将前置摄像头30设置在手机10的角落处的示例。在该示例中,如果手机的屏幕显示区仅避让角落部分,那么手机的屏占比可以进一步提升,进而改善手机正面的整体视觉效果。
然而,摄像模组的外形通常是上圆下方的异性结构。图2示出了现有技术中一个典型的摄像模组的外形立体示意图。该摄像模组包括位于上方的镜头组件601和位于下方的感光组件602。其中镜头组件在俯视图中呈圆形,感光组件在俯视图中呈方形,并且镜头组件承靠并固定于(例如通过粘合胶固定)感光组件以形成完整的摄像模组。进一步地,感光组件上往往设置感光芯片、金线、电子元件以及各种布线等构件,并且基于光学原理,镜头的光学中心通常需对准感光区域的中心。以上特性导致,当前置摄像模组安装在手机壳体内侧时,感光组件的尖角会与手机边框的圆角发生干涉,导致前置摄像头不能极致地贴近手机边框的圆角处,不利于改善手机正面的整体视觉效果。
图36示例性地示出了现有技术中一种典型的手机的局部剖面示意图。图36中示出了手机的显示面板301、位于显示面板301上方的透明盖板302、手机的顶框304、背壳305以及摄像模组300。可以看出摄像模组300位于手机的显示面板301与顶框304之间。在该示例中,摄像模组300的感光芯片103位于线路板104的正中央,这导致线路板外围区域的上空区会大量占用并浪费前面板的显示区域。
发明内容
本申请旨在提供一种能够克服现有技术的至少一个缺陷的解决方案。
根据本申请的一个方面,提供了一种感光组件,包括:
感光芯片;以及
线路板,所述感光芯片安装于所述线路板的表面,所述线路板的 表面的外轮廓呈缺角矩形,并且所述缺角矩形具有至少一个缺角。
其中,所述缺角为倒角,其中所述倒角适于与俯视轮廓呈圆角矩形的终端设备的圆角适配。
其中,所述感光芯片具有呈矩形的感光区域,以及
所述感光组件还包括:
滤色片,其贴附于所述感光芯片的表面;以及
镜头组件镜座,其安装或形成于所述线路板表面,所述镜头组件镜座的中央具有通孔,所述镜头组件镜座的顶面适于承靠镜头组件的环形底面,并且所述镜头组件镜座的顶面的外轮廓的形状与所述线路板的表面的外轮廓的形状适配。
其中,所述镜头组件镜座为模塑部,其通过模塑工艺形成在所述线路板表面、围绕所述感光芯片并向所述感光芯片延伸且接触所述感光芯片;以及
所述感光组件还包括:
环形支撑体,其设置在所述感光芯片的表面并且围绕在所述感光区域周围,并且所述滤色片通过所述环形支撑体贴附于所述感光芯片的表面。
其中,所述模塑部接触所述滤色片的侧面,以及所述模塑部的顶面为适于承靠镜座的平坦面。
其中,所述感光芯片具有围绕所述感光区域的非感光区域,所述非感光区域设有焊垫,且所述焊垫通过金属线与所述线路板电连接。
其中,所述感光组件还包括电子元件,其设置于所述线路板表面,且所述模塑部覆盖所述电子元件和所述金属线。
其中,所述模塑部的顶面是通过模具压合而形成的平坦面,并且所述模塑部覆盖所述滤色片的上表面的至少一部分边缘区域。
其中,所述模塑部接触所述环形支撑体,并且所述滤色片底面的边缘区域不暴露在所述环形支撑体的外侧面以外。
其中,所述模塑部的顶面的外轮廓为与所述线路板表面形状匹配的所述缺角矩形。
其中,所述电子元件和所述金属线均不设置于所述线路板的具有所述缺角的区域。
其中,所述模塑部的顶面具有与所述缺角对应的缺角段,所述缺角段的最小宽度为0.15-0.35mm。
其中,所述缺角矩形仅具有一个缺角;或者所述缺角矩形具有两个缺角,且这两个缺角处于互为对角的位置或相邻的位置。
其中,所述模塑部与所述线路板形成组合体,所述组合体具有外侧面,所述外侧面包含向所述感光芯片方向缩进的缩进面,并且所述缩进面的一端位于所述线路板的底面。
其中,所述缩进面设置于对应于所述缺角的位置。
根据本申请的另一个方面,提供了一种摄像模组,包括:
镜头组件,其包括筒形镜座和光学镜头;以及
以上任意一项所述的感光组件,所述筒形镜座的底面承靠并固定于所述线路板的表面。
根据本申请的又一个方面,提供了一种摄像模组,包括:
镜头组件,其包括筒形镜座和光学镜头;以及
以上任意一项所述的感光组件,所述筒形镜座的底面承靠并固定于所述模塑部的顶面。
其中,所述筒形镜座的侧壁厚度各向不均匀以适配所述线路板的所述缺角。
根据本申请的还一个方面,提供了一种终端设备,包括:
外壳,其具有呈圆角矩形的形状;以及
以上任意一项所述的摄像模组,其安装于所述外壳内,其中所述线路板的一个所述缺角设置在对应于所述外壳的一个圆角的位置。
根据本申请的再一个方面,提供了一种感光组件制作方法,包括:
1)在线路板的表面安装感光芯片,其中,所述感光芯片具有呈矩形的感光区域,所述线路板表面外轮廓为矩形,所述线路板的表面的至少一个角被设置为预留区域,并且所述预留区域不布线;以及
2)去除所述预留区域使所述线路板的表面的外轮廓呈缺角矩形,所述缺角矩形包括至少一个缺角。
其中,所述步骤2)中,通过切割去除所述预留区域。
其中,所述步骤2)中,通过打磨去除所述预留区域,使所述缺角矩形具有倒角。
其中,所述步骤1)包括:
11)将滤色片通过环形支撑体贴附于所述感光芯片,其中所述环形支撑体设置在所述感光芯片的表面并且围绕在所述感光区域周围;以及
12)将所述滤色片与所述感光芯片的组合体安装到所述线路板的表面,其中所述感光芯片的背面贴附于所述线路板的表面。
其中,所述感光芯片具有围绕所述感光区域的非感光区域,所述非感光区域设有焊垫;以及
在所述步骤1)和所述步骤2)之间,所述感光组件制作方法还包括步骤:
1a)在所述焊垫和所述线路板之间连接金属线以使所述线路板与所述感光芯片电连接,并且所述金属线避开所述预留区域。
其中,所述步骤2a)还包括:在所述线路板表面安装电子元件,并且所述电子元件避开所述预留区域。
其中,所述感光组件制作方法还包括步骤:
1b)通过模塑工艺在所述线路板的表面形成模塑部,所述模塑部围绕所述感光芯片并向所述感光芯片延伸且接触所述感光芯片,并且所述模塑部覆盖所述电子元件和所述金属线以及覆盖所述滤色片的上表面的至少一部分边缘区域;并且所述模塑部的顶面是通过模具压合而形成的平坦面,且所述模塑部的顶面高于所述滤色片的上表面。
其中,所述步骤1b)在所述步骤1)和所述步骤2)之间执行;并且
所述步骤2)还包括:对所述模塑部和所述线路板形成的组合体进行切割或研磨,使得所述模塑部的顶面的外轮廓形成与所述线路板表面形状匹配的缺角矩形;并且在所述缺角的位置处,所述模塑部的外侧面与所述线路板的外侧面齐平。
其中,所述1b)还包括:通过模塑工艺使得所述模塑部的顶面的外轮廓直接形成与所述线路板表面形状匹配的缺角矩形;以及
所述步骤1b)在所述步骤2)之后执行。
根据本申请的另一个方面,提供了一种摄像模组制作方法,包括:
根据以上任意一项所述的感光组件制作方法制作感光组件;以及
将镜头组件安装于所述感光组件,其中所述镜头组件的底面承靠于所述线路板或者承靠于所述模塑部的顶面。
根据本申请的另一个方面,提供了一种感光组件制作方法,包括:
10)将滤色片通过环形支撑体贴附于感光芯片,得到滤色片与感光芯片的组合体,其中,所述感光芯片具有呈矩形的感光区域,围绕所述感光区域的非感光区域,所述非感光区域设有焊垫,所述环形支撑体设置在所述感光芯片的表面并且围绕在所述感光区域周围,线路板母版的表面包括多个矩形的线路板区域,其中每个线路板区域的至少一个角被设置为预留区域,并且所述预留区域不布线;
20)将多个所述滤色片与所述感光芯片的组合体分别安装到所述线路板母板的每个线路板区域,其中所述感光芯片的背面贴附于所述线路板母板的表面;
30)在所述焊垫和所述线路板区域之间连接金属线以使每个所述线路板区域与对应的所述感光芯片电连接,并且所述金属线避开所述预留区域;
40)在每个所述线路板区域安装电子元件,并且所述电子元件避开所述预留区域;
50)通过模塑工艺在所述线路板母板的表面形成一体成型的模塑层,其中所述模塑层的顶面是通过模具压合而形成的平坦面,且所述模塑部的顶面高于所述滤色片的上表面;所述模塑层具有多个分别对应于每个感光芯片的光窗;并且,对于每个线路板区域,所述模塑层围绕对应的所述感光芯片并向该感光芯片延伸且接触该感光芯片,并且所述模塑层覆盖安装于该线路板区域的所述电子元件和所述金属线以及覆盖该线路板区域对应的滤色片的上表面的至少一部分边缘区域;
60)根据线路板区域的分界线,将所述线路板母板与所述模塑层形成的组合体切割成单体的感光组件半成品,所述单体的感光组件半成品包括线路板和附着在其表面的模塑部,并且所述单体的感光组件半成品的表面的外轮廓呈矩形;以及
70)对于单体的感光组件半成品,根据所述预留区域对所述线路板做局部去除,并去除附着在所述预留区域的模塑部,使得所得到的感光组件的表面的外轮廓呈缺角矩形,所述缺角矩形具有至少一个缺角。
根据本申请的另一方面,提供了一种感光组件,包括:线路板;感光芯片,其安装在所述线路板表面,所述感光芯片的表面具有感光区域;滤色片,其贴附于所述感光芯片;以及镜座,其安装或形成在所述线路板表面并围绕所述感光芯片,所述镜座具有至少一个终端承靠侧面,并且所述终端承靠侧面到所述感光区域的距离小于所述镜头组件镜座的其他侧面到所述感光区域的距离。
其中,所述感光组件还包括:环形支撑体,其设置在所述感光芯片的表面并且围绕在所述感光区域周围,所述滤色片通过所述环形支撑体贴附于所述感光芯片。
其中,所述镜座具有适于承靠镜头组件的环形顶面。
其中,所述镜座为模塑部,其通过模塑工艺形成在所述线路板表面、围绕所述感光芯片并向所述感光芯片延伸且接触所述感光芯片。
其中,所述模塑部接触所述滤色片的侧面。
其中,所述模塑部的顶面是通过模具压合而形成的平整面。
其中,所述模塑部具有倾斜的内侧面,所述内侧面围绕成光窗且所述光窗的通光面由上至下逐渐缩小。
其中,所述模塑部具有内侧面,且所述内侧面由所述模塑部的顶面向内延伸形成拔模斜面。
其中,所述模塑部接触所述环形支撑体的外侧面。
其中,所述感光芯片还包括围绕或部分围绕在所述感光芯片外侧的焊垫;并且,所述感光区域与所述感光芯片的侧面之间的区域为非感光区域,在设置有所述焊垫的非感光区域中,所述环形支撑体与所述感光芯片的接触面位于所述焊垫与所述感光区域之间;并且,所述焊垫通过金属线与所述线路板电连接。
其中,所述感光组件还包括形成在所述线路板的表面的电子元件,所述模塑部覆盖所述金属线和所述电子元件。
其中,所述线路板具有至少一个第一终端承靠侧面,所述感光芯片与所述第一终端承靠侧面之间的区域不设置电子元件。
其中,所述线路板的位于所述感光芯片与所述第一终端承靠侧面之间的区域没有布线。
其中,所述滤色片的底面不暴露在环形支撑体的外侧面以外。
其中,所述感光芯片的对应于所述第一终端承靠侧面的一侧不设置所述焊垫和所述金属线。
其中,所述模塑部的外侧面包括第二终端承靠侧面,所述第一终端承靠侧面和所述第二终端承靠侧面为通过一次切割所述线路板和所述模塑部而形成的切割面。
其中,所述第一终端承靠侧面是切割所述线路板形成的切割面,所述第二终端承靠侧面具有拔模斜面,所述拔模斜面全部保留或被部分切除。
其中,所述环形支撑体由光刻胶形成于所述感光芯片或者所述滤色片,并通过粘合胶贴附于所述滤色片或者感光芯片。
其中,所述环形支撑体由芯片粘结膜成型材料形成,所述环形支撑体的下表面接触并粘合于所述感光芯片的上表面,并且所述环形支撑体的上表面接触并粘合于所述滤色片的下表面。
其中,所述支撑体与所述感光芯片的接触面积小于所述支撑体与所述滤色片的接触面积。
其中,所述镜座为注塑镜座,所述镜座在注塑成型后安装于所述线路板表面。
根据本申请的另一方面,还提供了一种摄像模组,包括:前述感光组件,以及安装于所述感光组件的镜头组件。
其中,所述镜头组件包括:光学镜头,和外镜筒,所述光学镜头安装于所述外镜筒的内侧,所述外镜筒的底部承靠于所述镜座的顶面。
其中,所述外镜筒的侧壁具有适配段,所述适配段的壁厚小于所述侧壁的其它部分的壁厚,所述镜座中央具有光窗,并且所述适配段的底面承靠并固定于所述镜座的位于所述终端承靠侧面与所述光窗之间的顶面;以及所述光学镜头包括镜筒和安装在镜筒内的镜片组,并所述镜筒的外侧面固定于所述外镜筒的内侧面。
根据本申请的另一方面,还提供了一种智能终端设备,包括:摄像模组,所述摄像模组是前述摄像模组,并且所述摄像模组的所述终端承靠侧面承靠于所述终端设备的边框。
其中,所述终端承靠侧面通过缓冲层承靠于所述边框的内侧面。
其中,所述摄像模组为前置摄像模组,并且所述边框为所述外壳的顶框。
其中,所述智能终端设备为智能手机。
与现有技术相比,本申请具有下列至少一个技术效果:
1、本申请可以减小感光区域中心与手机边框(圆角)(例如顶框)的距离,提高屏幕占比,并改善手机正面的整体视觉效果。
2、本申请可以降低了模组高度(沿着光轴方向的尺寸),有助于摄像模组的镜头避让显示面板,从而提高屏幕占比。
3、本申请可以使镜头光路更靠近手机边框圆角/顶框,从而提高屏幕占比,并改善手机正面的整体视觉效果。
4、本申请可以保障摄像模组的光路的结构稳定可靠,适合于大规模量产。
5、本申请可以基于成熟的工艺手段实现,有助于提升产品良率。
6、本申请可以通过模塑部覆盖滤色片表面的至少一部分边缘区域,并将镜头组件承靠和固定于所述模塑部的顶面,来极致地缩小感光区域中心到手机边框圆角的距离,从而获得最佳的手机正面整体视觉效果。
附图说明
在参考附图中示出示例性实施例。本文中公开的实施例和附图应被视作说明性的,而非限制性的。
图1示出了将前置摄像头设置在手机的角落处的示例;
图2示出了现有技术中一个典型的摄像模组的外形立体示意图;
图3示出了本申请一个实施例的感光组件的俯视示意图;
图4示出了一个外壳呈圆角矩形的终端设备(例如手机);
图5示出了当前置摄像模组设置在圆角处时,基于图3实施例的手机和基于传统摄像模组的手机的对比示意图;
图6示出了本申请另一个实施例的感光组件及对应的摄像模组的立体外形示意图;
图7示出了本申请又一个实施例的感光组件的剖面示意图;
图8示出了一个比较例的摄像模组的剖面示意图;
图9a示出了基于图7所示感光组件的一个摄像模组;
图9b示出了一种顶面的外轮廓为缺角矩形的镜头组件镜座的俯视示意图;
图10示出了本申请再一个实施例的摄像模组的剖面示意图;
图11示出了本申请在一个实施例中基于图10实施例的摄像模组的剖面示意图;
图12示出了本申请一个实施例中的感光组件的俯视示意图;
图13示出了本申请一个实施例的隐去模塑部后的感光组件俯视示意图;
图14示出了图13的AA’剖面处的剖面示意图;
图15示出了摄像模组的AA’剖面处的剖面示意图;
图16示出了本申请另一个实施例的感光组件的俯视示意图;
图17示出了本申请一个实施例中,在所述线路板的表面安装感光芯片后的俯视示意图;
图18示出了本申请一个实施例中半成品的俯视示意图;
图19示出了本申请一个实施例中半成品的俯视示意图;
图20示出了对图19所示的模塑部和线路板形成的组合体进行切割或研磨的示意图;
图21示出了本申请一个实施例中对模塑部和线路板形成的组合体切割或研磨完成后的感光组件的透视示意图;
图22示出了与图21对应的无透视俯视示意图;
图23示出了本申请另一个实施例中对模塑部和线路板形成的组合体切割完成后的感光组件的透视示意图;
图24示出了与图23对应的无透视俯视示意图;
图25示出了本申请一个实施例中通过模塑工艺形成的具有缺角矩形外轮廓的模塑部;
图26示出了去除线路板的部分区域后的感光组件的俯视示意图;
图27示出了本申请一个实施例中的有缺角的线路板及布置于其表面的感光芯片、电子元件以及金属线;
图28示出了本申请一个实施例中在有缺角的线路板上模塑出模塑部的示意图;
图29示出了本申请一个实施例中线路板母板的俯视示意图;
图30示出了本申请一个实施例中将多个组合体分别安装到所述线路板母板的每个线路板区域后的示意图;
图31示出了本申请一个实施例中通过模塑工艺在所述线路板母板的表面形成一体成型的模塑层后的示意图;
图32示出了本申请一个实施例中将所述线路板母板与所述模塑层形成的组合体切割成单体的感光组件半成品的示意图;
图33示出了本申请一个实施例中通过去除工艺使感光组件的表面的外轮廓呈缺角矩形的示意图;
图34示出了本申请另一个实施例中通过去除工艺使感光组件的表面的外轮廓呈缺角矩形的示意图;
图35示出了本申请一个实施例中的手机的侧面剖视图。
图36示例性地示出了现有技术中一种典型的手机的局部剖面示意图;
图37示出了本申请一个实施例的摄像模组300的剖面示意图;
图38示出了本申请一个实施例中的感光组件100的剖面示意图;
图38A示出了本申请另一个实施例中的感光组件100的剖面示意图;
图39示出了本申请一个实施例的感光组件100的线路板104和感光芯片103的俯视示意图;
图40示出了在图39基础上加入滤色片101后的线路板104和感光芯片103的俯视示意图;
图41示出了在图40基础上加入模塑部106后的感光组件100的俯视示意图;
图42A示出了本申请一个实施例中的侧壁厚度各向不均匀的外镜筒201的仰视示意图;
图42B示出了本申请另一个实施例中的侧壁厚度各向不均匀的外 镜筒201的仰视示意图;
图43示出了本申请一个实施例的手机局部剖面示意图;
图44示出了基于传统摄像模组300的手机与基于本申请一个实施例的基于改进摄像模组300的手机的对比示意图;
图45示出了一种具有滤色片镜座的感光结构组件;
图46示出了一种无滤色片镜座的模塑体感光组件;
图47示出了本申请一个实施例的感光组件的剖视示意图。
具体实施方式
为了更好地理解本申请,将参考附图对本申请的各个方面做出更详细的说明。应理解,这些详细说明只是对本申请的示例性实施方式的描述,而非以任何方式限制本申请的范围。在说明书全文中,相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。
应注意,在本说明书中,第一、第二等的表述仅用于将一个特征与另一个特征区分开来,而不表示对特征的任何限制。因此,在不背离本申请的教导的情况下,下文中讨论的第一主体也可被称作第二主体。
在附图中,为了便于说明,已稍微夸大了物体的厚度、尺寸和形状。附图仅为示例而并非严格按比例绘制。
还应理解的是,用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”,当在本说明书中使用时表示存在所陈述的特征、整体、步骤、操作、元件和/或部件,但不排除存在或附加有一个或多个其它特征、整体、步骤、操作、元件、部件和/或它们的组合。此外,当诸如“...中的至少一个”的表述出现在所列特征的列表之后时,修饰整个所列特征,而不是修饰列表中的单独元件。此外,当描述本申请的实施方式时,使用“可以”表示“本申请的一个或多个实施方式”。并且,用语“示例性的”旨在指代示例或举例说明。
如在本文中使用的,用语“基本上”、“大约”以及类似的用语用作表近似的用语,而不用作表程度的用语,并且旨在说明将由本领域普通技术人员认识到的、测量值或计算值中的固有偏差。
除非另外限定,否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是,用语(例如在常用词典中定义的用语)应被解释为具有与它们在相关技术的上下文中的含义一致的含义,并且将不被以理想化 或过度正式意义解释,除非本文中明确如此限定。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
图3示出了本申请一个实施例的感光组件的俯视示意图。如图3所示,该感光组件包括感光芯片103和线路板104。其中,所述感光芯片103安装于所述线路板104的表面,所述线路板104的表面的外轮廓1041呈缺角矩形,并且所述缺角矩形具有至少一个缺角1042。本实施例中,所述缺角1042为倒角且该倒角适于与外壳呈圆角矩形的终端设备10的圆角适配。图4示出了一个外壳呈圆角矩形的终端设备10(例如手机)。参考图4,当线路板104的表面的外轮廓1041呈缺角矩形时,摄像模组20可以设置在更加贴近手机的圆角的位置处。图5示出了当前置摄像模组设置在圆角处时,基于图3实施例的手机和基于传统摄像模组30的手机的对比示意图。其中,图5的左侧为基于传统摄像模组30的手机,图5的右侧为基于图3实施例的手机,可以看出基于图3实施例的手机中,摄像模组20明显更加贴近手机的圆角,从而可以提高手机的屏幕占比,并改善手机正面的整体视觉效果。需注意,所述缺角1042并不限于倒角。例如,图6示出了本申请另一个实施例的感光组件及对应的摄像模组的立体外形示意图。可以看出,图6的实施例中,线路板104的所述缺角1042可以是在矩形线路板104上沿斜线切割出的缺角1042。本实施例中,切割可以是剪切、锯切、冲切或激光切割。需注意,手机摄像模组的线路板104通常还通过柔性连接带与一连接器连接,连接器用于与手机的其他部分(例如主板)的对应接口电连接,本文中所述的线路板104的表面的外轮廓1041是指除去柔性连接带和连接器以外部分的线路板104表面的外轮廓1041。
进一步地,图7示出了本申请又一个实施例的感光组件50的剖面示意图。图7所示出的剖面是与感光组件50的中轴线平行的一个剖面,下文中将出现的剖面图均是与感光组件50的中轴线平行的剖面,不再赘述。参考图7,感光组件50包括线路板104、感光芯片103、滤色片101、环形支撑体102、金属线105(例如金线)和电子元件107。其中,线路板104的表面的外轮廓1041呈缺角矩形。本实施例的感光组件50的俯视示意图仍参考图3,需注意,为使图面简洁,图3中并未示出滤色片101、金属线105和电子元件107等构件。所述感光芯片103具有呈矩形的感光区域1031和围绕所述感光区域1031的非感 光区域1032,所述非感光区域1032设有焊垫1033,且所述焊垫1033通过金属线105与所述线路板104电连接。环形支撑体102设置在所述感光芯片103的表面并且围绕在所述感光区域1031周围。滤色片101通过所述环形支撑体102与所述感光芯片103固定在一起。环形支撑体102可以由光刻胶或固化的DAF胶形成。其中DAF胶指芯片粘结膜成型材料,或者可以称为芯片粘结膜原浆,芯片粘结膜英文名称是Die Attach Film,缩写为DAF。电子元件107设置于所述线路板104表面,通常来说,电子元件107设置在金属线105的外侧。电子元件107可以是电容元件,也可以是电阻元件,还可以是摄像模组电路中所需的其它电子元件107。在一个实施例中,所述支撑体采用固化的DAF胶形成,例如通过丝网印刷工艺在滤色片101上制作基于DAF胶的环形支撑体102(此时该环形支撑体102预固化,但仍可通过高温热压工艺恢复粘性),然后再将滤色片101与感光芯片103对位并盖在感光芯片103的表面,然后通过高温热压、烘烤等步骤使DAF胶与感光芯片103表面粘合,从而使滤色片101(基于DAF胶的环形支撑体102)通过贴附于感光芯片103表面。所述支撑体与所述感光芯片103的接触面积小于所述支撑体与所述滤色片101的接触面积。在经过所述感光芯片103的轴线(该轴线垂直于感光芯片103的表面)的截面上,所述支撑体102形成倒梯形的形状。一方面,本实施例中的倒梯形设计可以有效地避免或减少成形工艺过程中支撑体形状被破坏,可以减少成形工艺过程中形成的微小颗粒对感光芯片103造成污染,从而提高产品良率。另一方面,本实施例中的倒梯形设计还有助于减小支撑体的下表面,使其更易于准确地对准焊垫1033与感光区域1031之间的微小区域,从而避免或减少因滤色片101与感光芯片103对位不精确而造成的产品不良,同时也适应目前感光芯片103的非感光区域1032逐渐缩小的发展趋势。进一步的,所述支撑体102可以为黑色胶材,这样可以减少反射至感光芯片103表面的杂光,同时结合上述倒梯形设计可以进一步减少杂光,从而提高成像品质。
在另一个实施例中,还可以省略所述环形支撑体102,滤色片101通过透明胶体贴附于感光芯片103的表面。
进一步地,在一个实施例中,滤色片101底面的边缘区域被环形支撑体102的顶面所覆盖,以使滤色片101底面的边缘区域不暴露在环形支撑体102的外侧面以外。其中“不暴露”可以理解为:滤色片101底面的边缘区域暴露在环形支撑体102的外侧面以外的尺寸小于预设的阈值(该阈值可根据相应的制作工艺的精度和/或公差确定)。 上述“不暴露”的设计可以防止滤色片101底面的边缘区域、环形支撑体102的外侧面以及线路板104的上表面的边缘区域之间形成狭小的半封闭间隙。如果形成上述半封闭间隙,那么在模塑成形过程中,模塑材料冲入这个半封闭间隙可能导致滤色片101拱起,这种拱起会对成像效果造成负面影响,同时还导致滤色片101易于被用于模塑工艺的压头压碎。因此,本实施例的方案有助于保障摄像模组的成像质量,有助于提高感光组件和摄像模组的生产良率。
图7的实施例中,滤色片101采用了下沉式设计,这种方案可以进一步减小感光区域1031中心到手机的圆角的距离,从而使摄像模组50更加贴近手机的圆角,进而改善手机正面的整体视觉效果。同时,这种方案还有助于降低摄像模组50的高度。当前,消费者对手机摄像模组的成像品质要求越来越高,滤色片101已成为主流手机产品的标配。为更好地示出本实施例与传统方案的区别,下面引入一个比较例进行说明。
图8示出了一个比较例的摄像模组的剖面示意图。如图8所示,该比较例的摄像模组60包括镜头组件601和感光组件602,其中感光组件602包括一个常规镜座6021,即滤色片101贴附于镜座6021,在此称为滤色片镜座6021,该滤色片镜座6021的底面呈筒状并贴附于线路板104表面。该镜座3021上表面(即顶面)具有一镜头安装面,镜头组件601安装于镜座的镜头安装面。镜座6021顶部向内侧延伸(即向感光组件602的中轴线延伸),形成用于安装滤色片101的延伸部60211,该延伸部60211中心具有通光孔。镜头组件601的底面安装于滤色片镜座6021的顶部。滤色片镜座6021通常采用注塑工艺制作,受限于滤色片镜座模具成型的限制,镜座必然具有成型厚度,导致感光模组的高度(指沿着感光组件中轴线方向的尺寸)增加,并且不利于减小感光组件602的横向尺寸(指垂直于感光组件中轴线方向的尺寸)。第一,由于滤色片镜座6021需要避让电子元件107和金线105,因此延伸部60211的底面必须高于电子元件107和金线105顶部,并且留出一定的安全距离,以避免损坏电子元件107和金线105。第二,为了对滤色片101形成稳定可靠的支撑,延伸部60211需要具有一定厚度(延伸部60211在指感光组件中轴线方向上的尺寸)。以上两点导致感光组件602的高度增加,进而导致摄像模组60的高度增加。第三,图8的方案中,需要用摄取机构将单个滤色片101精确地定位并安装于延伸部60211。由于工艺限制,滤色片101的面积不能太小、厚度不能太薄,这也导致感光组件602的高度增加,同时,由于镜座6021 不仅支撑镜头,还需贴附滤色片101,因此镜座6021的横向尺寸受限于镜头安装面及滤色片101安装面的宽度,进而导致感光组件602的横向尺寸增加。进一步地,在图8的方案中,滤色片101必然会大于感光芯片103的感光区域1031,且周边要留出一定的滤色片101安装面积,进一步地,在更外围的区域,滤色片镜座6021的顶面还需要预留出安装镜头组件的安装面积,这导致从感光区域1031边缘到镜座侧面的距离难以减小,因此难以通过制作缺角1042(或倒角)的方式来使摄像模组60的感光区域1031中心(或光学中心)进一步贴近手机的圆角。
图9a示出了基于图7所示感光组件50的一个摄像模组。本实施例中,滤色片101通过DAF胶或光刻胶形成的环形支撑体102贴附于感光芯片103,可以减小滤色片101的面积和厚度。并且,本实施例中不再需要如图8所示的滤色片镜座6021,从而可以降低感光组件的高度,进而降低摄像模组的高度。在一个实施例中,由于取消了滤色片镜座,镜头组件的底座可以直接承靠于线路板104表面(如图9a所示)。
在另一实施例中,所述摄像模组也可以进一步包括一仅供支撑所述镜头组件(不贴需附滤色片101)的镜头组件镜座,镜头组件承靠于镜头组件镜座的顶面。由于本实施例中的镜座不再需要支撑滤色片101,从而释放了镜座顶面的部分空间其原本用以支撑滤色片101的区域可以用以支撑镜头组件,因此其高度和横向尺寸均可以小于传统镜座,从而降低感光组件的高度并减小感光组件的横向尺寸。由于,本实施例可以减小感光组件的横向尺寸,以及可以减小感光组件的高度,同时滤色片101设置于感光芯片103表面,无需占用镜座上部贴附表面,因此镜座上部用于镜座贴附的画胶宽度得以保证,从而可以使得镜座被设计成进一步减小感光区域1031中心到手机的圆角的距离,从而使摄像模组更加贴近手机的圆角,进而改善手机正面的整体视觉效果。镜头组件镜座6021可以注塑成型,镜头组件镜座6021的顶面的外轮廓可以是圆形也可以是缺角矩形(图9b示出了一种顶面的外轮廓为缺角矩形的镜头组件镜座6021的俯视示意图),从而与线路板104表面的外轮廓1041适配。
进一步地,图10示出了本申请再一个实施例的摄像模组的剖面示意图。本实施例的特点是具有通过模塑工艺制作的模塑部106,从而进一步减小了感光组件的横向尺寸。具体来说,本实施例与图7所示的实施例的区别在于包括模塑部106。模塑部106的中心具有对应于 感光区域1031的光窗。模塑部106通过模塑工艺形成在所述线路板104表面、围绕所述感光芯片103并向所述感光芯片103延伸且接触所述感光芯片103,并且所述模塑部106可以接触所述滤色片101的侧面。所述模塑部106的顶面为适于承靠镜座的平坦面,它可以是通过模具压合而形成的平坦面,并且所述模塑部106的顶面可以高于所述滤色片101的上表面,也可以与所述滤色片101的上表面齐平。在一个实施例中,所述模塑部106还可以覆盖所述滤色片101的至少一部分边缘区域。所述模塑部106还可以覆盖电子元件107和金属线105。在一个实施例中,所述模塑部106还可以接触所述环形支撑体102。在模塑时,上模具、线路板104、感光芯片103、环形支撑体102以及滤色片101共同构成成形腔,下模具承靠于线路板104底面,从而与上模具形成压合(合模)。液态模塑成形材料被注入成形腔,进而形成图10所示的模塑部106。
进一步地,图11示出了本申请在一个实施例中基于图10实施例的摄像模组的剖面示意图。本实施例中,镜头组件承靠于模塑部106的顶面。参考图11可以看出,本实施例中,镜头组件的镜座在横向方向上(即垂直于感光组件中轴线的方向上)不需要避让电子元件107和金属线105,因此镜头组件的外侧面可以更加接近感光区域1031的中心。基于本实施例,镜座的安装位置还可以进一步向内侧(即朝向感光组件中轴线的一侧)移动。在极限的情况下,镜座的底面可以与滤色片101或感光芯片103的边缘区域(例如感光芯片103的非感光区域1032)部分重叠。这里部分重叠是指在俯视图中看镜座的底面与滤色片101或感光芯片103的边缘区域部分重叠。因此,本实施例可以帮助镜头组件的外侧面(即镜座的外侧面)极致地接近感光区域1031的中心。
进一步地,图12示出了本申请一个实施例中的感光组件的俯视示意图。图12中示出了模塑部106,并用虚线示出了被模塑部106覆盖的感光芯片103的外轮廓。本实施例中,感光组件的所述模塑部106的顶面的外轮廓为与所述线路板表面形状匹配的缺角矩形。缺角矩形的概念与线路板外轮廓的缺角矩形一致,不再赘述。在一个实施例中,所述模塑部106的顶面的最小宽度(例如对应于缺角1042处的宽度,所述模塑部106的顶面对应于缺角1042的区段也可以称为缺角段)为0.15-0.35mm。由于所述模塑部106的顶面的最小宽度一般位于所述缺角段,所以也可以理解为缺角段的最小宽度为0.15-0.35mm。在模塑部106的各项优势的基础上,本实施例可以进一步地使感光区域1031中 心靠近手机的圆角,从而使得手机正面外观更具视觉冲击力。
进一步地,图13示出了本申请一个实施例的隐去模塑部后的感光组件俯视示意图。如图13所示,电子元件107和金属线105均不设置于所述线路板104的具有所述缺角1042的区域。这样,可便于模塑部106形成缺角,从而使感光区域1031中心极致地靠近手机边框的圆角。进一步地,图14示出了图13的AA’剖面处的剖面示意图。可以看出,在缺角位置处,由于没有电子元件107和金属线105,模塑部106的顶面的宽度(指垂直于感光组件中轴线方向的尺寸)可以进一步减小。进一步地,图15示出了摄像模组的AA’剖面处的剖面示意图。从图15可以看出,在对应于缺角的位置处,镜座的底面可以与滤色片101或感光芯片103的边缘区域(例如感光芯片103的非感光区域1032)部分重叠,镜头组件的外侧面也可以与模塑部106的外侧面齐平。这样,感光区域1031的中心(镜头的光学中心或光轴通常对准感光区域1031的中心)可以极致地靠近手机的圆角,从而使得手机正面外观更具视觉冲击力。而作为对比,图8所示的比较例中,由于滤色片镜座的延伸部60211与线路板104之间具有用于避让电子元件107和金属线105的空隙,对滤色片镜座角落区域的切割可能会使感光芯片103暴露于外界,导致感光组件不良,因此无法通过形成所述缺角1042来使感光区域1031中心极致地靠近手机边框的圆角。另一方面,如果先加厚滤色片镜座再进行切割,则无法达到感光区域1031的中心极致地靠近手机的圆角的效果。
上述实施例中,所述缺角矩形仅具有一个缺角,但本申请并不限于此。例如,图16示出了本申请另一个实施例的感光组件的俯视示意图。参考图16,线路板104或模塑部106的外轮廓形成缺角矩形,所述缺角矩形具有两个缺角1042,且这两个缺角1042处于互为对角的位置。这种方案除了使摄像模组的感光区域1031的中心更靠近手机的圆角,还可以便于避让显示屏,进一步提高屏占比和视觉效果。在其它实施例中,缺角矩形也可以具有更多的缺角1042。
进一步地,在一个实施例中,所述模塑部106与所述线路板104形成组合体,所述组合体具有外侧面,所述外侧面包含向所述感光芯片103方向缩进的缩进面1041,并且所述缩进面的一端位于所述线路板104的底面。所述缩进面1041设置于对应于所述缺角的位置。手机外壳除了在俯视图中具有圆角,往往在侧视图中其边框也呈弧形或具有弧形分段。图35示出了本申请一个实施例中的手机的侧面剖视图。图中可以看出,上述缩进面的设计可以避免弧形分段与摄像模组的底 部发生干涉,从而使摄像模组的感光区域1031的中心更加靠近手机的边框,进而可以进一步地使摄像模组的感光区域1031的中心靠近手机的圆角。上述缩进面可以通过切割或打磨等各种去除工艺制成。所述缩进面可以为台阶状弯折面或者为斜面。所述缩进面可以仅由位于所述线路板104上的面构成(例如仅切除线路板104的一部分且模塑部106的底面未暴露),也可以由位于所述线路板104上的面和位于所述模塑部106的面共同构成(例如切除线路板104并使模塑部106的一部分底面暴露),还可以跨越所述线路板104和所述模塑部106之间的界面(例如同时切除线路板104部分和模塑部106部分而形成的缩进面)。
进一步地,在一个实施例中,摄像模组包括镜头组件和感光组件。镜头组件包括筒形镜座和安装于筒形镜座内侧的光学镜头。筒形镜座的底面承靠并固定于感光组件的所述模塑部106的顶面。其中筒形镜座的侧壁厚度各向不均匀以适配所述线路板104和模塑部106的所述缺角1042,从而使感光区域1031中心(或镜头的光学中心)更加贴近于手机的圆角。在另一个实施例中,感光组件可以没有模塑部106,此时筒形镜座的底面承靠并固定于感光组件的线路板104上,其中筒形镜座的侧壁厚度各向不均匀以适配所述线路板104的所述缺角1042,从而使感光区域1031中心(或镜头的光学中心)更加贴近于手机的圆角。
进一步地,在一个实施例中,提供了一种终端设备(例如手机),其包括外壳和摄像模组,所述外壳具有圆角矩形的形状,摄像模组安装于所述外壳内,其中所述线路板104的一个所述缺角1042设置在对应于所述外壳的一个圆角的位置。
进一步地,根据本申请一个实施例,还提供了一种感光组件制作方法。该感光组件制作方法包括下列步骤:
1)在线路板104的表面安装感光芯片103,其中所述感光芯片103具有呈矩形的感光区域1031和围绕所述感光区域1031的非感光区域1032。线路板104的表面外轮廓为矩形,所述线路板104的表面的至少一个角被设置为预留区域1043,并且所述预留区域1043不布线。图17示出了本申请一个实施例中,在所述线路板104的表面安装感光芯片103后的俯视示意图。
2)去除所述预留区域1043使所述线路板104的表面的外轮廓呈缺角矩形,所述缺角矩形包括至少一个缺角。在一个实施例中,可以通过切割去除所述预留区域1043,切割工艺可以采用剪切、锯切、冲 切或激光切割。在另一个实施例中,可以通过研磨去除所述预留区域1043,使所述缺角矩形具有倒角。
在一个实施例中,步骤1)可以包括子步骤11)和12)。步骤11)和12)如下:
11)将滤色片101通过环形支撑体102贴附于所述感光芯片103,其中所述环形支撑体102设置在所述感光芯片103的表面并且围绕在所述感光区域1031周围。
12)将所述滤色片101与所述感光芯片103的组合体安装到所述线路板104的表面,其中所述感光芯片103的背面贴附于所述线路板104的表面。
在一个实施例中,在完成步骤12)后、执行步骤2)之前,还可以执行步骤1a)。图18示出了本申请一个实施例中步骤1a)完成后的半成品的俯视示意图。参考图18,步骤1a)如下:
1a)在所述焊垫1033和所述线路板104之间连接金属线105以使所述线路板104与所述感光芯片103电连接,并且所述金属线105避开所述预留区域1043。
在一个实施例中,在完成步骤12)后、执行步骤2)之前,还可以执行步骤1b)。图19示出了本申请一个实施例中步骤1b)完成后的半成品的俯视示意图。参考图19,步骤2b)如下:
1b)通过模塑工艺在所述线路板的表面形成模塑部106,所述模塑部106围绕所述感光芯片103并向所述感光芯片103延伸且接触所述感光芯片103,并且所述模塑部106覆盖所述电子元件107和所述金属线105以及覆盖所述滤色片的上表面的至少一部分边缘区域;并且所述模塑部106的顶面是通过模具压合而形成的平坦面,且所述模塑部106的顶面高于所述滤色片的上表面。
在一个实施例中,所述步骤2)还包括:对所述模塑部106和所述线路板104形成的组合体进行切割或研磨,使得所述模塑部106的顶面的外轮廓形成与所述线路板104表面形状匹配的缺角矩形;并且在所述缺角1042的位置处,所述模塑部106的外侧面与所述线路板104的外侧面齐平。图20示出了对图19所示的模塑部106和线路板形成的组合体进行切割或研磨的示意图。其中示出了去除工艺的加工线1045。该去除工艺可以是切割或研磨。图21示出了本申请一个实施例中对模塑部106和线路板104形成的组合体切割或研磨完成后的感光组件的透视示意图,其中示出了电子元件107和金属线105。图22示出了与图21对应的无透视俯视示意图,其中未示出了电子元件 107和金属线105,实际上电子元件107和金属线105均被模塑部106所覆盖。图21和图22所示的实施例中,通过去除工艺加工出的缺角1042为倒角。图23示出了本申请另一个实施例中对模塑部106和线路板104形成的组合体切割完成后的感光组件的透视示意图,其中示出了电子元件107和金属线105。图24示出了与图23对应的无透视俯视示意图,其中未示出了电子元件107和金属线105。图23和图24所示的实施例中切割面为斜面。
在另一个实施例中,所述步骤1b)可以在步骤2)之后执行,并且步骤1b)还包括:通过模塑工艺使得所述模塑部106的顶面的外轮廓直接形成与所述线路板104表面形状匹配的缺角矩形。图25示出了本申请一个实施例中通过模塑工艺形成的具有缺角矩形外轮廓的模塑部106。该缺角矩形外轮廓可以基于模具的形成。进一步地,可以沿着图25所示的倒角制作工艺线1045去除线路板104的部分区域。图26示出了去除线路板104的部分区域后的感光组件的俯视示意图。
在另一个实施例中,也可以先制作出有缺角1042的线路板104,即表面外轮廓为缺角矩形的线路板104,然后再模塑出模塑部106,其外轮廓具有与所述线路板104表面形状匹配的缺角矩形。图27示出了本申请一个实施例中的有缺角的线路板104及布置于其表面的感光芯片103、电子元件107以及金属线105,其中感光芯片103上贴附有滤色片形成感光组件和滤色片的组合体,为图示简洁,图27中未示出滤色片。图28示出了本申请一个实施例中在有缺角的线路板104上模塑出模塑部106的示意图。特别地,在图28中示出了设置在线路板104边缘区域的压合边1046。该压合边1046是模塑工艺中形成紧密压合状态而设置。在模塑过程中,上模具可以与该压合边1046互相承靠并紧密压合,从而形成密封的用于形成模塑部106的成形腔。这样可以防止液态模塑材料泄露到线路板104底面,同时也可以保障成型后所得到的模塑部106形状符合预期。进一步地,部分压合边1046可以通过切割工艺切除,以减小摄像模组在垂直于光轴方向的尺寸。
进一步地,根据本申请的另一个实施例,还提供了另一种感光组件制作方法,其包括:
10)将滤色片101通过环形支撑体102贴附于感光芯片103,得到滤色片101与感光芯片103的组合体,其中,图29示出了本申请一个实施例中线路板母板1040的俯视示意图。参考图29,线路板母板1040表面包括多个矩形的线路板104区域,其中每个线路板104区域的至少一个角被设置为预留区域,并且所述预留区域不布线。图29 中还示出了连接带104a和连接器104b。所述感光芯片103具有呈矩形的感光区域1031,围绕所述感光区域1031的非感光区域1032,所述非感光区域1032设有焊垫1033,所述环形支撑体102设置在所述感光芯片103的表面并且围绕在所述感光区域1031周围。
20)将多个所述滤色片101与所述感光芯片103的组合体分别安装到所述线路板母板1040的每个线路板104区域,其中所述感光芯片103的背面贴附于所述线路板母板1040的表面。图30示出了本申请一个实施例中将多个组合体分别安装到所述线路板母板1040的每个线路板104区域后的示意图。
30)在所述焊垫1033和所述线路板104区域之间连接金属线105以使每个所述线路板104区域与对应的所述感光芯片103电连接,并且所述金属线105避开所述预留区域1043。
40)在每个所述线路板104区域安装电子元件107,并且所述电子元件107避开所述预留区域1043。
50)通过模塑工艺在所述线路板母板1040的表面形成一体成型的模塑层,其中所述模塑层的顶面是通过模具压合而形成的平坦面,且所述模塑部106的顶面高于所述滤色片101的上表面;所述模塑层具有多个分别对应于每个感光芯片103的光窗;并且,对于每个线路板104区域,所述模塑层围绕对应的所述感光芯片103并向该感光芯片103延伸且接触该感光芯片103,并且所述模塑层覆盖安装于该线路板104区域的所述电子元件107和所述金属线105以及覆盖该线路板104区域对应的滤色片101的上表面的至少一部分边缘区域。图31示出了本申请一个实施例中通过模塑工艺在所述线路板母板1040的表面形成一体成型的模塑层后的示意图。
60)根据线路板104区域的分界线,将所述线路板母板1040与所述模塑层形成的组合体切割成单体的感光组件半成品,所述单体的感光组件半成品包括线路板104和附着在其表面的模塑部106,并且所述单体的感光组件半成品的表面的外轮廓1041呈矩形。图32示出了本申请一个实施例中将所述线路板母板1040与所述模塑层106形成的组合体切割成单体的感光组件半成品的示意图。
70)对于单体的感光组件半成品,根据所述预留区域1043对所述线路板104做局部去除,并去除附着在所述预留区域1043的模塑部106,使得所得到的感光组件的表面的外轮廓1041呈缺角矩形,所述缺角矩形具有至少一个缺角1042。图33示出了本申请一个实施例中通过去除工艺使感光组件的表面的外轮廓呈缺角矩形的示意图。该实 施例中,对每个感光组件半成品单独进行切割。图34示出了本申请另一个实施例中通过去除工艺使感光组件的表面的外轮廓呈缺角矩形的示意图。该实施例中,将多个感光组件半成品以预定角度排列,通过一次切割得到多个表面的外轮廓呈缺角矩形的感光组件。
图37示出了本申请一个实施例的摄像模组300的剖面示意图。其中剖面是指经过摄像模组300的光轴的剖面,本文中的其它剖面示意图也是如此,下文中不再赘述。参考图37,所述摄像模组300包括感光组件100和镜头组件200。其中感光组件100包括线路板104和感光芯片103,感光芯片103安装在所述线路板104表面,所述感光芯片103的表面具有感光区域1031(所述感光区域1031的中心相对于所述线路板104的中心可以具有偏移)。镜头组件200包括光学镜头202和外镜筒201。所述光学镜头202安装于所述外镜筒201的内侧。
进一步地,图38示出了本申请一个实施例中的感光组件100的剖面示意图。参考图38,感光组件100可以包括:线路板104、感光芯片103、环形支撑体102、滤色片101和模塑部106。其中环形支撑体102设置在所述感光芯片103的表面并且围绕在所述感光区域1031周围。滤色片101通过所述环形支撑体102与所述感光芯片103固定在一起。模塑部106通过模塑工艺形成在所述线路板104表面、围绕所述感光芯片103并向所述感光芯片103延伸且接触所述感光芯片103以及所述环形支撑体102的外侧面。所述模塑部106可以覆盖所述滤色片101的上表面的至少一部分边缘区域,也可以不覆盖所述滤色片的上表面(例如图38A示出了本申请另一个实施例中的感光组件100的剖面示意图,该实施例中,模塑部106可以与所述滤色片的侧面接触但不覆盖所述滤色片的上表面的任何区域)。所述模塑部106的顶面承靠于所述外镜筒201的底面。感光芯片103可以还包括围绕或部分围绕在所述感光芯片1031外侧的焊垫1033;并且,所述感光区域与所述感光芯片侧面之间的区域为非感光区域1032,在设置有所述焊垫1033的非感光区域1032,所述环形支撑体102与所述感光芯片103的接触面位于所述焊垫1033与所述感光区域1031之间;并且,所述焊垫1033可以通过金属线105(例如金线)与所述线路板104电连接。所述感光组件100可以还包括形成在所述线路板104的表面的电子元件107(例如电容元件或电阻元件),所述模塑部106可以覆盖所述金属线105和所述电子元件107。本实施例中,滤色片通过所述环形支撑体贴附于感光芯片,这种方案区别于在模塑部(或其他类型的镜座)上安装滤色片的方案。由于本实施例的模塑部不需要预留用于安装滤 色片的贴附宽度,因此镜座可以内缩,从而在镜座的顶面做出极窄边,从而使摄像模组可以设置到更加靠近终端设备顶框的位置。关于上述极窄边的设计原理在下文中还有进一步地描述,此处不再详述。需要注意,本实施例中的模塑部可以被其他类型的镜座替代,例如在一个实施例中,可以采用注塑镜座,该镜座可以注塑成型后安装于所述线路板表面并围绕在所述感光芯片的周围。另外,在另一个实施例中,可以省略所述环形支撑体,滤色片通过透明胶体贴附于感光芯片的表面。
进一步地,在一个实施例中,滤色片101底面的边缘区域被环形支撑体102的顶面所覆盖,以使滤色片101底面不暴露在环形支撑体102的外侧面以外。其中“不暴露”可以理解为:滤色片101底面的边缘区域暴露在环形支撑体102的外侧面以外的尺寸小于预设的阈值(该阈值可根据相应的制作工艺的精度和/或公差确定)。上述“不暴露”的设计可以防止滤色片101底面的边缘区域、环形支撑体102的外侧面以及线路板104的上表面的边缘区域之间形成狭小的半封闭间隙。如果形成上述半封闭间隙,那么在模塑成形过程中,模塑材料冲入这个半封闭间隙可能导致滤色片101拱起,这种拱起会对成像效果造成负面影响,同时还导致滤色片101易于被用于模塑工艺的压头压碎。因此,本实施例的方案有助于保障摄像模组的成像质量,有助于提高感光组件和摄像模组的生产良率。
图39示出了本申请一个实施例的感光组件100的线路板104和感光芯片103的俯视示意图。图40示出了在图39基础上加入滤色片101后的线路板104和感光芯片103的俯视示意图。图41示出了在图40基础上加入模塑部106后的感光组件100的俯视示意图。结合参考图38-41,本实施例中,所述线路板104可以具有至少一个第一终端承靠侧面,所述感光芯片103与所述第一终端承靠侧面之间的区域不设置电子元件107,以使所述感光区域1031的中心相对于所述线路板的中心具有偏移。所述模塑部106的外侧面可以包括第二终端承靠侧面1062,所述第二终端承靠侧面1062与所述第一终端承靠侧面1041齐平。所述第一终端承靠侧面1041(或所述第二终端承靠侧面1062)与感光区域1031之间将形成一条极窄边108,使得所述第一终端承靠侧面1041(或所述第二终端承靠侧面1062)可以设置在更加靠近终端设备顶框的位置,从提高屏占比。
在一个实施例中,所述第一终端承靠侧面1041和所述第二终端承靠侧面1062为通过一次切割所述线路板104和所述模塑部106而形成 的切割面。模塑部106通过模塑工艺在线路板104上形成。模塑工艺中,上下模具压合对线路板104进行压合,以在线路板104上表面的相应区域形成与如图38所述模塑部106形状相对应的成型腔。为保证压合,需要模塑部106的外侧面与线路板104的侧面之间通常留有压合边,导致线路板104的侧面与感光区域1031中心的距离增加。并且,为便于脱模,模塑部106的侧面通常为斜面。而本实施例中,通过对模塑后106的线路板104与模塑部106的组合体进行一次切割来形成所述第一终端承靠侧面1041和所述第二终端承靠侧面1062,可以避免上述位于模塑部106的外侧面的脱模斜面和线路板104上的压合边,从而使线路板104的侧面与感光区域1031中心的距离减小,进而提升手机的屏占比。在另一个实施例中,可以仅切割线路板。即所述第一终端承靠侧面是切割所述线路板形成的切割面,而所述第二终端承靠侧面仍具有拔模斜面,且拔模斜面全部保留(该实施例中,拔模斜度一般为7°左右,不会增加太多的宽度)。这种设计有助于降低切割工艺难度,提升良率。在又一实施例中,所述第一终端承靠侧面是切割所述线路板形成的切割面,并且所述拔模斜面可以被部分切除。进一步地,在一个实施例中,从背面切割所述线路板形成对应的切割面。从背面来切割,一方面不需要留安全距离,另一方面是可以在线路板边缘切出一个位于模塑部内侧的缩进面。
上述实施例中,第一终端承靠侧面1041和第二终端承靠侧面1062适于承靠终端(例如手机)的顶部边框(即顶框304)。由于感光区域1031中心更加靠近手机的顶框304,本实施例的设计可以提高手机屏占比。同时本实施例还考虑到了摄像模组300的结构强度和结构稳定性,可以保障摄像模组300的光路的结构稳定可靠,适合于大规模量产。并且,本实施例的摄像模组300可以基于成熟的工艺手段实现,有助于提升产品良率。
进一步地,仍然参考图38-41,在一个实施例中,所述感光区域1031的中心可以相对于所述感光芯片103的中心具有偏移,从而进一步提高手机的屏占比。
进一步地,仍然参考图38-41,在一个实施例中,所述感光芯片103的对应于所述第一终端承靠侧面1041的一侧不设置所述焊垫1033和所述金属线105,从而进一步提高手机的屏占比。
进一步地,仍然参考图38,在一个实施例中,所述模塑部的顶面1061是通过模具压合而形成的平整面,并且所述模塑部的顶面1061高于所述滤色片101的上表面。
进一步地,仍然参考图38,在一个实施例中,所述模塑部106具有内侧面1063,所述内侧面1063形成光窗且所述光窗的通光面由上至下逐渐缩小。
进一步地,仍然参考图38,在一个实施例中,所述模塑部106具有内侧面1063,且所述内侧面1063由所述模塑部的顶面1061向内延伸形成拔模斜面。
进一步地,在一个实施例中,所述环形支撑体102由光刻胶形成于所述感光芯片103或者所述滤色片101,并通过粘合胶贴附于所述滤色片101或者感光芯片103。
进一步地,仍然参考图38,在一个实施例中,所述环形支撑体102由芯片粘结膜成型材料形成,所述环形支撑体102的下表面接触并粘合于所述感光芯片103的上表面,并且所述环形支撑体102的上表面接触并粘合于所述滤色片101的下表面。
进一步地,仍然参考图38,在一个实施例中,所述支撑体与所述感光芯片103的接触面积小于所述支撑体与所述滤色片101的接触面积。在经过所述感光芯片103的轴线的截面上,所述支撑体形成倒梯形的形状。
进一步地,图42A示出了本申请一个实施例中的侧壁厚度各向不均匀的外镜筒201的仰视示意图。本实施例中,外镜筒201可以具有适配段201a,该适配段201a可以对应于感光组件顶面的极窄边。外镜筒201的侧壁的适配段201a可以通过切割侧壁厚度均匀的圆筒来形成。切割后可以使适配段的壁厚小于所述外镜筒201的侧壁的其它部分的壁厚。在其它实施例中,适配段201a还可以通过研磨来形成,以使适配段201a的壁厚小于所述外镜筒201的侧壁的其它部分的壁厚。需要注意,本申请的其他实施例中,外镜筒201也可以是侧壁厚度均匀的圆筒,只要外镜筒201的底部宽度适配感光组件的极窄边即可。
图42B示出了本申请另一个实施例中的侧壁厚度各向不均匀的外镜筒201的仰视示意图。参考图38和图42A,所述外镜筒201的侧壁可以具有适配段201a,所述适配段201a的壁厚小于所述侧壁的其它部分的壁厚。结合参考图38、图41和图42A,所述适配段201a的底面承靠并固定于所述模塑部106的位于所述第二承靠面与所述光窗之间的顶面。
进一步地,仍然参考图37,所述光学镜头202包括镜筒2021和安装在镜筒201内的透镜组2022,并所述镜筒2021的外侧面固定于所述外镜筒201的内侧面。所述镜筒2021的外侧面可以通过螺纹连接 的方式与所述外镜筒201的内侧面固定。在另一个实施例中,所述镜筒2021和外镜筒201也可以合二为一,即二者可以一体成型。对于与镜筒2021一体成型的外镜筒201,其内侧面可以直接安装透镜组2022。需注意,与镜筒2021一体成型的外镜筒201仍然具有各向不同厚度的侧壁,以使所述光学镜头202的中心对准所述感光区域1031的中心。
进一步地,图43示出了本申请一个实施例的手机局部剖面示意图。参考图43,手机(或其它智能终端设备)包括摄像模组300、显示面板301、透明盖板302、顶框304和背壳305。其中,透明盖板302、顶框304和背壳305构成该手机外壳的一部分。所述摄像模组300包括感光组件100和镜头组件200。其中感光组件100包括线路板104和感光芯片103,感光芯片103安装在所述线路板104表面,所述感光芯片103的表面具有感光区域1031且所述感光区域1031的中心相对于所述线路板104的中心具有偏移,并且偏移的方向是朝向所述顶框304的方向。镜头组件200包括光学镜头202和外镜筒201。所述光学镜头202安装于所述外镜筒201的内侧,并且所述外镜筒201具有各向不同厚度的侧壁,以使所述光学镜头202的中心对准所述感光区域1031的中心。
进一步地,本申请中,智能终端设备中,前置摄像模组300可以采用前文中任意实施例所述的摄像模组300。仍然结合参考图38-41,在一个实施例中,所述线路板104可以具有至少一个第一终端承靠侧面1041,所述感光芯片103与所述第一终端承靠侧面1041之间的区域不设置电子元件107,以使所述感光区域1031的中心相对于所述线路板104的中心具有偏移。所述模塑部106的外侧面可以包括第二终端承靠侧面1062,所述第二终端承靠侧面1062与所述第一终端承靠侧面1041齐平。所述第一终端承靠侧面1041和第二终端承靠侧面1062可以通过缓冲层(图43中未示出)承靠于所述边框的内侧面。
从图43可以看出,由于摄像模组300靠近顶框304的区域被削减(被削减区域如图43中虚线框所示),使得使镜头光路更靠近手机顶框,感光区域1031中心与手机顶框304的距离减小,从而提高屏幕占比。
图44示出了基于传统摄像模组300的手机与基于本申请一个实施例的基于改进摄像模组300的手机的对比示意图。可以看出,改进摄像模组300的感光区域1031边缘距摄像模组300靠近手机顶框304一侧的外侧面的距离H1b显著小于传统摄像模组300的感光区域1031边缘距摄像模组300靠近手机顶框304一侧的外侧面的距离H1a。基 于改进摄像模组300的手机的显示面板301边缘向手机顶框304推进了距离D。
进一步地,为更好地阐述本申请的工艺原理及技术效果,下文中将结合比较例来进一步展示本申请的优异特性。
下文的描述中,“线路板顶部”代表是线路板表面靠近手机顶框的部分,侧部、中部、底部等由此界定;
“上移”、“偏移”等代表模组感光区域中心或光轴偏离线路板中心的过程或状态;
“下沉”代表模组在从屏幕指向后盖(即背壳)的沿手机厚度方向的高度降低;
“手机横向方向”代表手机的短边方向;
“手机竖直方向”代表手机的长边方向;
“感光组件顶边部分”代表感光组件靠近手机顶框的部分,并由此界定其他部分。
作为模组内部空间的较大占用者,线路板顶部的电容器件和邦线(即金属线)首先被移除,其可以被重新设计电路并引至其他边,已知的,所述电容器件和邦线可被引至线路板底部,或分散至线路板侧部。此时,上述光学系统得以进行上移。
作为压缩全面屏手机“额头”的方法,光学系统上移提供了一种解决思路,下面讨论现有的两种结构:
可以理解的是,感光组件与手机顶框304的距离由感光芯片感光区域距该顶框304的距离H所决定,H由感光芯片感光区域距模组边缘的距离H1和模组边缘距手机顶框的距离H2组成,距离H2一般用于填充缓冲物质固定组件同时避免震动或磕碰造成的组件脱落,是手机组装工艺的必须安全距离,因此,可以只讨论距离H1对光学系统上移的影响。
图45示出了一种具有滤色片镜座的感光组件。其具有非常规的不均匀镜座,即不同宽度的边框,滤色片镜座中心透光区的设计由感光芯片的位置所决定,而其边框的大小形状则由线路板和感光芯片的大小共同决定。
该滤色片镜座上表面宽度为h1,IR滤光片(即滤色片)贴附安全距离d2,IR滤光片贴附宽度d3,可以看出,在极限条件下,即IR滤光片的透光区与感光芯片感光区等大时,此时上述距离H1为:
H1=h1+d2+d3;
该方案中,其滤色片镜座由注塑工艺形成,而在注塑工艺中,模具的尺寸限制使得镜座的尺寸具有一极限而难以降低,这使得滤色片镜座的上表面宽度h1难以缩小,限制了光学系统的上移程度。其中,镜座上表面用来贴附镜头组件,由于注塑工艺的限制,其宽度较大,在满足镜头贴附宽度的同时还有较多剩余,造成浪费。IR滤光片贴附安全距离是:贴附滤光片时在其侧边预留的空间,以降低贴附精度要求,并提供结构的热膨胀缓冲空间。IR滤光片贴附宽度是:为了保证滤光片的贴附强度,其在贴附时必须保证一定的贴附宽度。
图46示出了一种无滤色片镜座的模塑体感光组件。与图45所示的例子不同,其使用模塑体结构代替了注塑成型的滤色片镜座。其具有第一台阶A和第二台阶B,第一台阶A具有相对于感光芯片上表面的高度a,第二台阶B具有相对于第一台阶上表面的高度b,同时由于镜头贴附宽度d1、IR滤光片贴附安全距离d2、IR滤光片贴附宽度d3和拔模角θ的存在,此时上述距离H1为:
H1=d1+btanθ+d2+d3+atanθ;
该方案中直接模制于感光芯片和线路板表面的模塑体(或称为模塑部起到了滤色片镜座的作用,模塑结构相较于传统的注塑滤色片镜座,在尺寸、精度等方面具有优势,但由于该结构中镜头贴附宽度d1、IR滤光片贴附安全距离d2、IR滤光片贴附宽度d3和拔模角θ的存在,同样难以有效减小距离H1。其中,第一台阶和第二台阶:第一台阶用来承载IR滤光片,其高度a是模塑工艺所能形成的最低高度;第二台阶用来承载镜头组件,其高度例如大于滤光片厚度,以防止在贴附镜头组件的时候刮伤滤光片。二者通过模塑工艺一体形成。镜头贴附宽度是:贴附镜头组件(点胶)时所需要的宽度。
基于上述分析可以看出,除了工艺限制外对距离H1影响最大的是IR滤光片,其贴附安全距离d2、贴附宽度d3等制约着距离H1的减小。
图47示出了本申请一个实施例的感光组件的剖视示意图,该结构包括感光芯片、模塑部和IR滤光片,IR滤光片可以与所述感光芯片等大。IR滤光片和感光芯片可以通过一环形凸台(即环形支撑部)连接,所述环形凸台可以是光刻胶通过光刻工艺形成于感光芯片的感光区与芯片焊盘(即焊垫)之间,所述凸台在形成后通过胶水粘接于IR滤光片,所述胶水可以是热固、紫外或者热固-紫外胶;另一方面,所 述环形凸台也可以形成于IR滤光片上的对应位置,并通过与上述粘接同样的方法与感光芯片连接。在本申请的另一个实施例中,所述凸台为具有凸台形状的DAF胶(即芯片粘结膜成型材料)粘附形成,DAF胶具有热固性,在贴附于目标后通过加热进行粘接,所述DAF胶可以通过丝网印刷工艺制作在IR滤光片上,形成所述环形凸台,然后与感光芯片进行对位,通过高温热压处理将环形凸台的表面直接贴附在感光芯片上,最后通过烘烤使IR滤光片和感光芯片通过DAF胶形成的所述环形凸台永久固定在一起。
通常情况下,所述感光芯片和滤色片的组合体可以通过晶圆级工艺形成,一种方法是:
1在具有感光芯片的晶圆正面形成若干环绕每个芯片感光区的环形凸台;
2将IR滤光片(优先选择与晶圆等大的未切割滤光片)贴附于上述环形凸台;
3对所述晶圆和/或滤光片进行减薄;
4切割上述结构,得到分立的若干感光系统。
将上述感光系统芯片面贴附于线路板,贴附区域通过下式进行选择:
H1=d1+(a-h IR-h 凸台)tanθ;
在本实施例中,为便于理解,仅对感光芯片在手机竖直方向上的位置进行了限定。稍后对上述选择方法进行解释。
感光芯片贴附后,进行引线键合(例如“打金线”)操作,电连接所述感光芯片与线路板,可以理解的是,线路板顶部不进行键合操作。
如图47所示,模塑体包覆感光系统的侧面并覆盖IR滤光片对应于感光芯片非感光区的部分,d1是前文提到的镜头贴附宽度,其为贴附镜头组件(点胶)时所必须的最低宽度要求;θ是拔模角,在模塑工艺中,模制体固化完成后需要进行脱模,以分离模具与模制体,为了顺利脱模并在脱模过程中不损伤模塑表面,防止刮痕、模刺的产生,常常会设置一斜面,该斜面与拔模方向成一角度,称为拔模角;同前文,a是第一台阶的高度,其为芯片表面至模塑顶表面的垂直高度,同时也是模塑工艺所能形成的最低高度;IR滤光片(厚度:h IR);环形凸台(高度:h 凸台)。
因此,模塑体在此面的最大厚度为d1+(a-h IR-h 凸台)tanθ,此厚度为芯片感光区距线路板边缘的水平距离,亦即感光系统在手机竖直方向上的极限位置。
综合上述三个H1计算公式可以看出,在图47所示的实施例中,IR滤光片不再作为距离H1的限制,IR滤光片可与感光芯片视为“一体”,此时,IR滤光片贴附安全距离d2、IR滤光片贴附宽度d3等均不再与距离H1有关,从根本上分离上述限制因子。此时,影响距离H1的只有镜头贴附宽度d1和拔模角θ,因此有效地减小了距离H1。
下面描述图47所示的实施例的另一优势。
目前,手机前置摄像模组的镜筒结构多大约呈台阶状。图47的实施例中,IR滤光片通过环形凸台直接贴附于感光芯片非感光区。在工艺上,由于进行了减薄操作,IR滤光片的厚度得以降低,起承载IR滤光片作用的环形凸台也具有极低的微米级高度;在结构上,IR滤光片由原来的贴附于结构上方下沉至被侧面包裹于模塑体内部。从两个方面降低了感光结构的高度,那么,承载于感光组件之上的镜头组件(即光学结构)亦可下沉相应高度。因此,对于目前的前摄镜筒结构,可以理解的是,所述下沉在降低结构高度的同时也相应减小了原平面的模组尺寸,当结构下沉的高度超过上述台阶状镜筒的一台阶时,相应的,屏幕区域即可向前推进相应距离,从而进一步缩小了模组占屏比(如图44所示)。
进一步地,现有技术中,镜头组件可以包括光学镜头和外镜筒。各向均匀的光学镜头通过锁附或组立等工艺固定于各向均匀的外镜筒内部,其光学中心即镜头组件的几何中心。
而本申请的一个实施例中,外镜筒被设计为:所述外镜筒的与上述感光组件的极窄边对应的部分具有较薄的镜筒壁,而其他部分则具有相对较厚的镜筒壁以对应于上述感光结构的非顶边部分。均匀的镜筒被设于具有不均匀壁厚的外镜筒内,并通过镜头组件贴附结合于所述感光结构,以实现整体光学系统的偏移。
在一个实施例中,上述具有不均匀结构的外镜筒一般通过同样具有不均匀结构的模具注塑成型。在另一实施例中,所述镜筒通过切割、研磨现有外镜筒来形成。可以理解,外镜筒的形成过程与所述感光组件的结构保持对应,尤其在手机顶框方向,以使此方向上感光结构的外壁与光学结构的外壁重合。
可以理解的是,上述形成方法只针对镜筒的外侧壁,其内侧壁优先保持不变,即所述镜头的光学系统无需改变。
本申请的摄像模组较现有技术进一步上移了光学系统,同时降低了模组高度,因此可较大地提升当前智能手机的屏幕占比,也更加适用于紧凑的手机内部设计。可以理解的是,作为一种提升显示区占比的摄像模组,本申请同样可用于手机以外的其他设备及场合。
以上描述仅为本申请的较佳实施方式以及对所运用技术原理的说明。本领域技术人员应当理解,本申请中所涉及的发明范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离所述发明构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。

Claims (58)

  1. 一种感光组件,其特征在于,包括:
    感光芯片;以及
    线路板,所述感光芯片安装于所述线路板的表面,所述线路板的表面的外轮廓呈缺角矩形,并且所述缺角矩形具有至少一个缺角。
  2. 根据权利要求1所述的感光组件,其特征在于,包括:所述缺角为倒角,其中所述倒角适于与俯视轮廓呈圆角矩形的终端设备的圆角适配。
  3. 根据权利要求2所述的感光组件,其特征在于,所述感光芯片具有呈矩形的感光区域,以及
    所述感光组件还包括:
    滤色片,其贴附于所述感光芯片的表面;以及
    镜头组件镜座,其安装或形成于所述线路板表面,所述镜头组件镜座的中央具有通孔,所述镜头组件镜座的顶面适于承靠镜头组件的环形底面,并且所述镜头组件镜座的顶面的外轮廓的形状与所述线路板的表面的外轮廓的形状适配。
  4. 根据权利要求3所述的感光组件,其特征在于,
    所述镜头组件镜座为模塑部,其通过模塑工艺形成在所述线路板表面、围绕所述感光芯片并向所述感光芯片延伸且接触所述感光芯片;以及
    所述感光组件还包括:
    环形支撑体,其设置在所述感光芯片的表面并且围绕在所述感光区域周围,并且所述滤色片通过所述环形支撑体贴附于所述感光芯片的表面。
  5. 根据权利要求4所述的感光组件,其特征在于,所述模塑部接触所述滤色片的侧面,以及所述模塑部的顶面为适于承靠镜座的平坦面。
  6. 根据权利要求4所述的感光组件,其特征在于,所述感光芯片具有围绕所述感光区域的非感光区域,所述非感光区域设有焊垫, 且所述焊垫通过金属线与所述线路板电连接。
  7. 根据权利要求6所述的感光组件,其特征在于,所述感光组件还包括电子元件,其设置于所述线路板表面,且所述模塑部覆盖所述电子元件和所述金属线。
  8. 根据权利要求5所述的感光组件,其特征在于,所述模塑部的顶面是通过模具压合而形成的平坦面,并且所述模塑部覆盖所述滤色片的上表面的至少一部分边缘区域。
  9. 根据权利要求4所述的感光组件,其特征在于,所述模塑部接触所述环形支撑体,并且所述滤色片底面的边缘区域不暴露在所述环形支撑体的外侧面以外。
  10. 根据权利要求4-9中任意一项所述的感光组件,其特征在于,所述模塑部的顶面的外轮廓为与所述线路板表面形状匹配的所述缺角矩形。
  11. 根据权利要求7所述的感光组件,其特征在于,所述电子元件和所述金属线均不设置于所述线路板的具有所述缺角的区域。
  12. 根据权利要求4所述的感光组件,其特征在于,所述模塑部的顶面具有与所述缺角对应的缺角段,所述缺角段的最小宽度为0.15-0.35mm。
  13. 根据权利要求1所述的感光组件,其特征在于,所述缺角矩形仅具有一个缺角;或者所述缺角矩形具有两个缺角,且这两个缺角处于互为对角的位置或相邻的位置。
  14. 根据权利要求4-11中任意一项所述的感光组件,其特征在于,所述模塑部与所述线路板形成组合体,所述组合体具有外侧面,所述外侧面包含向所述感光芯片方向缩进的缩进面,并且所述缩进面的一端位于所述线路板的底面。
  15. 根据权利要求14所述的感光组件,其特征在于,所述缩进 面设置于对应于所述缺角的位置。
  16. 一种摄像模组,其特征在于,包括:
    镜头组件,其包括筒形镜座和光学镜头;以及
    权利要求1、2、3或13所述的感光组件,所述筒形镜座的底面承靠并固定于所述线路板的表面。
  17. 一种摄像模组,其特征在于,包括:
    镜头组件,其包括筒形镜座和光学镜头;以及
    权利要求4-12和14-15中任意一项所述的感光组件,所述筒形镜座的底面承靠并固定于所述模塑部的顶面。
  18. 根据权利要求17所述的摄像模组,其特征在于,所述筒形镜座的侧壁厚度各向不均匀以适配所述线路板的所述缺角。
  19. 一种终端设备,其特征在于,包括:
    外壳,其具有呈圆角矩形的形状;以及
    权利要求16、17或18所述的摄像模组,其安装于所述外壳内,其中所述线路板的一个所述缺角设置在对应于所述外壳的一个圆角的位置。
  20. 一种感光组件制作方法,其特征在于,包括:
    1)在线路板的表面安装感光芯片,其中,所述感光芯片具有呈矩形的感光区域,所述线路板的表面外轮廓为矩形,所述线路板的表面的至少一个角被设置为预留区域,并且所述预留区域不布线;以及
    2)去除所述预留区域使所述线路板的表面的外轮廓呈缺角矩形,所述缺角矩形包括至少一个缺角。
  21. 根据权利要求20所述的感光组件制作方法,其特征在于,所述步骤2)中,通过切割去除所述预留区域。
  22. 根据权利要求20所述的感光组件制作方法,其特征在于,所述步骤2)中,通过打磨去除所述预留区域,使所述缺角矩形具有倒角。
  23. 根据权利要求20所述的感光组件制作方法,其特征在于,所述步骤1)包括:
    11)将滤色片通过环形支撑体贴附于所述感光芯片,其中所述环形支撑体设置在所述感光芯片的表面并且围绕在所述感光区域周围;以及
    12)将所述滤色片与所述感光芯片的组合体安装到所述线路板的表面,其中所述感光芯片的背面贴附于所述线路板的表面。
  24. 根据权利要求23所述的感光组件制作方法,其特征在于,所述感光芯片具有围绕所述感光区域的非感光区域,所述非感光区域设有焊垫;以及
    在所述步骤1)和所述步骤2)之间,所述感光组件制作方法还包括步骤:
    1a)在所述焊垫和所述线路板之间连接金属线以使所述线路板与所述感光芯片电连接,并且所述金属线避开所述预留区域。
  25. 根据权利要求24所述的感光组件制作方法,其特征在于,所述步骤1a)还包括:在所述线路板表面安装电子元件,并且所述电子元件避开所述预留区域。
  26. 根据权利要求25所述的感光组件制作方法,其特征在于,所述感光组件制作方法还包括步骤:
    1b)通过模塑工艺在所述线路板的表面形成模塑部,所述模塑部围绕所述感光芯片并向所述感光芯片延伸且接触所述感光芯片,并且所述模塑部覆盖所述电子元件和所述金属线以及覆盖所述滤色片的上表面的至少一部分边缘区域;并且所述模塑部的顶面是通过模具压合而形成的平坦面,且所述模塑部的顶面高于所述滤色片的上表面。
  27. 根据权利要求26所述的感光组件制作方法,其特征在于,所述步骤1b)在所述步骤1)和所述步骤2)之间执行;并且
    所述步骤2)还包括:对所述模塑部和所述线路板形成的组合体进行切割或研磨,使得所述模塑部的顶面的外轮廓形成与所述线路板表面形状匹配的缺角矩形;并且在所述缺角的位置处,所述模塑部的外侧面与所述线路板的外侧面齐平。
  28. 根据权利要求26所述的感光组件制作方法,其特征在于,所述2b)还包括:通过模塑工艺使得所述模塑部的顶面的外轮廓直接形成与所述线路板表面形状匹配的缺角矩形;以及
    所述步骤1b)在所述步骤2)之后执行。
  29. 一种摄像模组制作方法,其特征在于,包括:
    根据权利要求20-28中任意一项所述的感光组件制作方法制作感光组件;以及
    将镜头组件安装于所述感光组件,其中所述镜头组件的底面承靠于所述线路板或者承靠于所述模塑部的顶面。
  30. 一种感光组件制作方法,其特征在于,包括:
    10)将滤色片通过环形支撑体贴附于感光芯片,得到滤色片与感光芯片的组合体,其中,线路板母版的表面包括多个矩形的线路板区域,其中每个线路板区域的至少一个角被设置为预留区域,并且所述预留区域不布线,所述感光芯片具有呈矩形的感光区域,围绕所述感光区域的非感光区域,所述非感光区域设有焊垫,所述环形支撑体设置在所述感光芯片的表面并且围绕在所述感光区域周围;
    20)将多个所述滤色片与所述感光芯片的组合体分别安装到所述线路板母板的每个线路板区域,其中所述感光芯片的背面贴附于所述线路板母板的表面;
    30)在所述焊垫和所述线路板区域之间连接金属线以使每个所述线路板区域与对应的所述感光芯片电连接,并且所述金属线避开所述预留区域;
    40)在每个所述线路板区域安装电子元件,并且所述电子元件避开所述预留区域;
    50)通过模塑工艺在所述线路板母板的表面形成一体成型的模塑层,其中所述模塑层的顶面是通过模具压合而形成的平坦面,且所述模塑部的顶面高于所述滤色片的上表面;所述模塑层具有多个分别对应于每个感光芯片的光窗;并且,对于每个线路板区域,所述模塑层围绕对应的所述感光芯片并向该感光芯片延伸且接触该感光芯片,并且所述模塑层覆盖安装于该线路板区域的所述电子元件和所述金属线以及覆盖该线路板区域对应的滤色片的上表面的至少一部分边缘区域;
    60)根据线路板区域的分界线,将所述线路板母板与所述模塑层 形成的组合体切割成单体的感光组件半成品,所述单体的感光组件半成品包括线路板和附着在其表面的模塑部,并且所述单体的感光组件半成品的表面的外轮廓呈矩形;以及
    70)对于单体的感光组件半成品,根据所述预留区域对所述线路板做局部去除,并去除附着在所述预留区域的模塑部,使得所得到的感光组件的表面的外轮廓呈缺角矩形,所述缺角矩形具有至少一个缺角。
  31. 一种感光组件,其特征在于,包括:
    线路板;
    感光芯片,其安装在所述线路板表面,所述感光芯片的表面具有感光区域;
    滤色片,其贴附于所述感光芯片;以及
    镜座,其安装或形成在所述线路板表面并围绕所述感光芯片,所述镜座具有至少一个终端承靠侧面,并且所述终端承靠侧面到所述感光区域的距离小于所述镜头组件镜座的其他侧面到所述感光区域的距离。
  32. 根据权利要求31所述的感光组件,其特征在于,所述感光组件还包括:
    环形支撑体,其设置在所述感光芯片的表面并且围绕在所述感光区域周围,所述滤色片通过所述环形支撑体贴附于所述感光芯片。
  33. 根据权利要求31所述的感光组件,其特征在于,所述镜座具有适于承靠镜头组件的环形顶面。
  34. 根据权利要求32所述的感光组件,其特征在于,所述镜座为模塑部,其通过模塑工艺形成在所述线路板表面、围绕所述感光芯片并向所述感光芯片延伸且接触所述感光芯片。
  35. 根据权利要求34所述的感光组件,其特征在于,所述模塑部接触所述滤色片的侧面。
  36. 根据权利要求34所述的感光组件,其特征在于,所述模塑部的顶面是通过模具压合而形成的平整面。
  37. 根据权利要求34所述的感光组件,其特征在于,所述模塑部具有倾斜的内侧面,所述内侧面围绕成光窗且所述光窗的通光面由上至下逐渐缩小。
  38. 根据权利要求34所述的感光组件,其特征在于,所述模塑部具有内侧面,且所述内侧面由所述模塑部的顶面向内延伸形成拔模斜面。
  39. 根据权利要求34所述的感光组件,其特征在于,所述模塑部接触所述环形支撑体的外侧面。
  40. 根据权利要求34所述的感光组件,其特征在于,所述感光芯片还包括围绕或部分围绕在所述感光芯片外侧的焊垫;并且,所述感光区域与所述感光芯片的侧面之间的区域为非感光区域,在设置有所述焊垫的非感光区域中,所述环形支撑体与所述感光芯片的接触面位于所述焊垫与所述感光区域之间;并且,所述焊垫通过金属线与所述线路板电连接。
  41. 根据权利要求40所述的感光组件,其特征在于,所述感光组件还包括形成在所述线路板的表面的电子元件,所述模塑部覆盖所述金属线和所述电子元件。
  42. 根据权利要求40所述的感光组件,其特征在于,所述线路板具有至少一个第一终端承靠侧面,所述感光芯片与所述第一终端承靠侧面之间的区域不设置电子元件。
  43. 根据权利要求42所述的感光组件,其特征在于,所述线路板的位于所述感光芯片与所述第一终端承靠侧面之间的区域没有布线。
  44. 根据权利要求35所述的感光组件,其特征在于,所述滤色片的底面不暴露在环形支撑体的外侧面以外。
  45. 根据权利要求44所述的感光组件,其特征在于,所述感光 芯片的对应于所述第一终端承靠侧面的一侧不设置所述焊垫和所述金属线。
  46. 根据权利要求42所述的感光组件,其特征在于,所述模塑部的外侧面包括第二终端承靠侧面,所述第一终端承靠侧面和所述第二终端承靠侧面为通过一次切割所述线路板和所述模塑部而形成的切割面。
  47. 根据权利要求42所述的感光组件,其特征在于,所述第一终端承靠侧面是切割所述线路板形成的切割面,所述第二终端承靠侧面具有拔模斜面,所述拔模斜面全部保留或被部分切除。
  48. 根据权利要求32所述的感光组件,其特征在于,所述环形支撑体由光刻胶形成于所述感光芯片或者所述滤色片,并通过粘合胶贴附于所述滤色片或者感光芯片。
  49. 根据权利要求32所述的感光组件,其特征在于,所述环形支撑体由芯片粘结膜成型材料形成,所述环形支撑体的下表面接触并粘合于所述感光芯片的上表面,并且所述环形支撑体的上表面接触并粘合于所述滤色片的下表面。
  50. 根据权利要求49所述的感光组件,其特征在于,所述支撑体与所述感光芯片的接触面积小于所述支撑体与所述滤色片的接触面积。
  51. 根据权利要求32所述的感光组件,其特征在于,所述镜座为注塑镜座,所述镜座在注塑成型后安装于所述线路板表面。
  52. 一种摄像模组,其特征在于,包括:
    权利要求31-51中任一项所述的感光组件,以及
    安装于所述感光组件的镜头组件。
  53. 根据权利要求52所述的摄像模组,其特征在于,所述镜头组件包括:
    光学镜头,以及
    外镜筒,所述光学镜头安装于所述外镜筒的内侧,所述外镜筒的底部承靠于所述镜座的顶面。
  54. 根据权利要求52所述的摄像模组,其特征在于,所述外镜筒的侧壁具有适配段,所述适配段的壁厚小于所述侧壁的其它部分的壁厚,所述镜座中央具有光窗,并且所述适配段的底面承靠并固定于所述镜座的位于所述终端承靠侧面与所述光窗之间的顶面;以及
    所述光学镜头包括镜筒和安装在镜筒内的镜片组,并所述镜筒的外侧面固定于所述外镜筒的内侧面。
  55. 一种智能终端设备,包括:摄像模组,其特征在于,所述摄像模组是权利要求52-54中任意一项所述的所述摄像模组,并且所述摄像模组的所述终端承靠侧面承靠于所述终端设备的边框。
  56. 根据权利要求55所述的智能终端设备,其特征在于,所述终端承靠侧面通过缓冲层承靠于所述边框的内侧面。
  57. 根据权利要求55所述的智能终端设备,其特征在于,所述摄像模组为前置摄像模组,并且所述边框为所述外壳的顶框。
  58. 根据权利要求55所述的智能终端设备,其特征在于,所述智能终端设备为智能手机。
PCT/CN2019/085957 2018-06-21 2019-05-08 感光组件、摄像模组及相应的终端设备和制作方法 WO2019242421A1 (zh)

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