Method for mounting optical anti-vibration device

Abstract

The invention provides an installation method of an optical anti-vibration device, and the method comprises the steps: enabling a rotor and a stator to be connected through a conductive elastic wire to form an intermediate product based on the optical anti-vibration device employing elastic electric connection, fixing the rotor in the intermediate product, and removing the fixation of the rotor after a photosensitive element is connected to the rotor. By adopting the assembling process for post-assembling the photosensitive element provided by the scheme, the problem of cost loss of the photosensitive element caused by poor subsequent product assembling when the photosensitive element is firstly assembled in the assembling process of the optical anti-vibration device can be solved, and the product yield is improved while the cost is effectively saved. Preferably, the mover can be fixed by means of variable-viscosity glue, a vacuum adsorption jig and the like, fixation of the mover is relieved after the photosensitive element is installed, and lossless stripping of a final product is achieved.

Description

Technical Field

[0001] The invention relates to a method for installing an optical anti-shake device. Background Art

[0002] When taking photos with a handheld portable smart device, the physiological tremor of the human body is unavoidable and cannot be overcome through training. As a result, the handheld portable smart device will inevitably shake with the human body when taking photos, resulting in a decrease in image quality. The most obvious manifestation is that the image obtained is blurry and unclear.

[0003] Moreover, as consumers' requirements for mobile phone imaging quality increase and the number of photo-taking scenarios increases, more and more consumers will have the need to record or take photos while exercising, which puts higher demands on the anti-shake function of handheld portable smart devices when taking photos and videos.

[0004] The optical image stabilization device of the prior art generally includes a mover and a stator, wherein a photosensitive element, such as an image sensor chip, is disposed on the mover, and the mover drives the photosensitive element to move relative to the stator under the action of a driving device to achieve optical image stabilization compensation. An electrical connection assembly (Trace Suspension Assembly, TSA) is also disposed between the mover and the stator, and the electrical connection assembly includes a plurality of conductive elastic wires, one end of each conductive elastic wire is connected to the mover, and the other end is connected to the stator, for providing electrical connection and elastic restoring force for the mover and the photosensitive element.

[0005] The existing optical image stabilization device product assembly usually adopts the method of installing the photosensitive element first. When the product is assembled using a mover with the photosensitive element pre-installed, there is an inevitable phenomenon that the product is scrapped due to poor assembly in the subsequent product assembly process, which leads to the scrapping of the photosensitive element and serious cost losses. In order to solve the problem of serious cost losses, an installation method of installing the photosensitive element later is proposed.

[0006] When the photosensitive element is installed after installation, the mover and stator must first be connected to form an intermediate product through conductive elastic wires, and then the photosensitive element must be bonded to the mover through metal wires to achieve electrical connection of the photosensitive element. The force generated in this process acts on the mover, which can easily cause the mover to shift. If the mover shifts in the X and Y directions during the installation of the photosensitive element, the installation position of the photosensitive element will shift, affecting the performance of the final product; if the Z direction shifts, the conductive elastic wire connecting the mover and stator of the product will be deformed, damaged, or even broken, causing the product to be scrapped. Summary of the invention

[0007] The object of the present invention is to provide an installation method for an optical image stabilization device, thereby reducing assembly difficulty, saving manufacturing costs, and improving product yield.

[0008] Based on the above considerations, the present invention provides a post-installation method for an optical image stabilization device, comprising: connecting a mover and a stator by means of a conductive elastic wire to form an intermediate product; fixing the mover in the intermediate product; connecting a photosensitive element to the mover to form the final product; and releasing the fixation of the mover.

[0009] Preferably, the step of forming the intermediate product comprises: placing the mover and the stator in the same plane and connecting them via the conductive elastic wire.

[0010] Preferably, the step of fixing the mover comprises: providing a packaging carrier, and bonding the mover to the packaging carrier by means of a variable viscosity glue.

[0011] Preferably, the intermediate product is integrally bonded to the packaging carrier by means of a variable viscosity adhesive.

[0012] Preferably, the step of releasing the fixation of the mover comprises: changing the process conditions to reduce the adhesive force of the variable viscosity glue to separate the final product and the packaging carrier.

[0013] Preferably, the viscosity-variable adhesive is UV thermally degradable adhesive or high-temperature deviscous adhesive.

[0014] Preferably, the step of fixing the mover includes: providing a vacuum adsorption jig, placing the intermediate product in a product groove of the jig, and adsorbing the mover through vacuum air holes provided in the product groove.

[0015] Preferably, the step of releasing the fixation of the mover includes: turning off the vacuum generating device of the vacuum adsorption jig.

[0016] Preferably, the step of connecting the photosensitive element to the mover comprises: the photosensitive element is connected to a metal wire with one end suspended in the air, and the suspended end of the metal wire is bonded to a pad on the mover.

[0017] Preferably, after the step of forming the intermediate product, the electrical properties of the intermediate product are tested.

[0018] Preferably, the operations of moving parts fixing, photosensitive element connection and fixing release can be performed on multiple groups of products at the same time.

[0019] The installation method of the optical image stabilization device provided by the present invention is based on the optical image stabilization device using elastic electrical connection. The mover and the stator are first connected by conductive elastic wire to form an intermediate product, and then the mover in the intermediate product is fixed, and the fixation of the mover is released after the photosensitive element is connected to the mover. By adopting the assembly process of post-installation of the photosensitive element provided by this scheme, the problem of cost loss of the photosensitive element caused by poor assembly of subsequent process products when the photosensitive element is installed first in the previous assembly of the optical image stabilization device can be effectively solved, effectively saving costs while improving product yield. Preferably, the fixation of the mover can be achieved by means of variable viscosity glue, vacuum adsorption jigs, etc., and the fixation of the mover can be released after the photosensitive element is installed, so as to achieve non-destructive peeling of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0021] Figure 1 is a flow chart of a method for installing an optical image stabilization device according to the present invention; Figure 2 A schematic structural diagram of an intermediate product of the optical image stabilization device of the present invention; Figure 3 is a schematic diagram of a method for installing an optical image stabilization device according to an embodiment of the present invention; Figure 4 , Figure 5 FIG. 4 is a schematic diagram of a method for installing an optical image stabilization device according to another embodiment of the present invention.

[0022] In the drawings, the same or similar reference numerals denote the same or similar devices (modules) or steps throughout different drawings. Implementation

[0023] In order to solve the problems in the above-mentioned prior art, the present invention provides an installation method of an optical image stabilization device. Based on the optical image stabilization device using elastic electrical connection, the mover and the stator are first connected by a conductive elastic wire to form an intermediate product, and then the mover in the intermediate product is fixed, and the fixation of the mover is released after the photosensitive element is connected to the mover. This installation method can solve the problem of cost loss of the photosensitive element due to poor assembly of subsequent products when the photosensitive element is installed first in the assembly of the optical image stabilization device, thereby effectively saving costs and improving product yield.

[0024] In the following specific description of the preferred embodiments, reference will be made to the attached drawings which constitute a part of the present invention. The attached drawings show by way of example specific embodiments that can implement the present invention. The illustrative embodiments are not intended to be exhaustive of all embodiments according to the present invention. It will be appreciated that other embodiments may be utilized, and structural or logical modifications may also be made without departing from the scope of the present invention. Therefore, the following specific description is not restrictive, and the scope of the present invention is limited by the appended claims.

[0025] In order to solve the problem of cost loss of photosensitive elements caused by poor assembly of subsequent products when the photosensitive elements are installed first in the prior art optical image stabilization device assembly, the present invention provides an installation method of the optical image stabilization device, such as Figure 1 The specific steps include: S1: Connect the mover and stator through conductive elastic wire to form an intermediate product; S2: fixing the mover in the intermediate product; S3: Connecting the photosensitive element to the mover to form a final product; S4: releasing the fixation of the mover.

[0026] First, in step S1 , the mover 102 and the stator 101 are connected by means of a conductive elastic wire 103 to form an intermediate product 100 . Figure 2 An embodiment of an intermediate product 100 of an optical image stabilization device of the present invention is shown. The intermediate product 100 includes a stator 101 and a mover 102, an electrical connection assembly is arranged between the stator 101 and the mover 102, and the electrical connection assembly includes a plurality of conductive elastic wires 103, one end of each conductive elastic wire 103 is connected to the mover 102, and the other end is connected to the stator 101, and the conductive elastic wire 103 includes at least one metal conductive layer, and can have a certain deformation in the X and Y directions under normal working conditions, and is used to provide electrical connection and elastic restoring force for the mover 102 and the photosensitive element subsequently installed on the mover 102. Preferably, the mover 102 and the stator 101 are placed in the same plane and connected by the conductive elastic wire 103, that is, the mover 102 and the stator 101 are located in the same XY plane perpendicular to the optical axis Z direction, so that the conductive elastic wire 103 connected between the mover 102 and the stator 101 can be prevented from being deformed, damaged or even broken as much as possible, resulting in product scrapping.

[0027] Preferably, after the intermediate product 100 is formed, the electrical performance of the intermediate product 100 is tested. If the test fails, it is considered that the intermediate product 100 has failed to be assembled, and the subsequent step of installing the photosensitive element is no longer performed, thereby greatly reducing the problem of cost loss of the photosensitive element. If the test passes, the subsequent step of installing the photosensitive element is continued. Here, the following two preferred embodiments are shown.

[0028] Embodiment 1

[0029] Figure 3 A preferred embodiment of a method for installing an optical image stabilization device of the present invention is shown.

[0030] In step S2, a packaging carrier 104 is provided, and the mover 105 is bonded to the packaging carrier 104 by means of a variable viscosity glue 105, so as to fix the mover 102. Preferably, the intermediate product 100 (including the mover 102, the stator 101, and the conductive elastic wire 103 therebetween) is integrally bonded to the packaging carrier 104 by means of the variable viscosity glue 105, so as to ensure that the mover 102 and the stator 101 are always located in the same plane.

[0031] Next, in step S3, a photosensitive element (not shown) is connected to the mover 102 to form a final product. Specifically, the photosensitive element can be connected to the mover 102 by metal wire bonding, bonding, solder ball connection, etc. In a preferred embodiment not shown, the mover 102 may be provided with a groove or hollowing, and the groove or hollowing is used to accommodate the photosensitive element. The photosensitive element may be a component such as an image sensor having a photosensitive function to obtain image data. For example, an image sensor chip in a COM (Chip On Module) package form can be used as a photosensitive element. The image sensor chip is connected to a metal wire with one end suspended. The image sensor chip is connected to the mover 102 by bonding the suspended end of the metal wire to the pad on the mover 102. The image sensor chip is connected and installed with the mover 102. Since the mover 102 has been fixed in advance, the position of the photosensitive element is offset due to the movement of the mover during the connection process of the photosensitive element in this step, or the conductive elastic wire is deformed or damaged or even broken, thereby improving the product yield.

[0032] Finally, in step S4, the process conditions are changed to reduce the adhesive force of the variable viscosity glue 105 to release the fixation of the mover 102, and separate the final product and the package carrier 104. Among them, the variable viscosity glue 105 can use UV pyrolysis glue to fix the mover. This glue film has the characteristics of showing high adhesive force in normal state, but the adhesive force drops sharply after ultraviolet irradiation. After the photosensitive element is connected, the glue film is debonded by UV irradiation. When its viscosity drops to a small enough level or even disappears completely, the final product and the package carrier can be separated, thereby achieving non-destructive peeling of the final product. In addition, the variable viscosity glue 105 can also use high-temperature debonding glue to fix the mover. This glue film has the characteristics of showing high adhesive force in normal state, but the adhesive force drops sharply after high-temperature heating. Its application principle and structure are the same as UV pyrolysis glue. After the photosensitive element is connected, the glue film is debonded by heating to achieve non-destructive peeling of the final product.

[0033] The structure of the packaging carrier 104 and the number of the bonding intermediate products 100 can be adjusted according to actual needs. It is preferred to use the packaging carrier 104 as an operation unit to install the photosensitive element, so that the movable element is fixed, the photosensitive element is connected, and the fixing and releasing operations are performed on the group product at the same time, so as to realize batch operation and improve installation efficiency. After being separated from the final product, the packaging carrier 104 and the variable viscosity glue 105 can be recycled to further reduce the manufacturing cost.

[0034] Embodiment 1

[0035] Figure 4 , Figure 5 Another preferred embodiment of the method for installing the optical image stabilization device of the present invention is shown.

[0036] In step S2, a vacuum adsorption fixture 106 is provided. An embodiment of the vacuum adsorption fixture 106 is as follows: Figure 4 , Figure 5 As shown, it includes a product groove 107, in which a plurality of vacuum air holes 108 are provided. The intermediate product 100 (including the mover 102, the stator 101 and the conductive elastic wire 103 therebetween) is placed in the product groove 107. When the fixture is evacuated, the vacuum air holes 108 provide a vacuum adsorption force to adsorb the mover 102, thereby fixing the mover 102.

[0037] In step S3, the step of installing the photosensitive element is similar to that in the first embodiment, and will not be repeated here.

[0038] Finally, in step S4, after the photosensitive element is connected, the vacuum generating device (not shown) of the vacuum adsorption fixture is turned off to release the fixation of the mover 102, thereby achieving non-destructive peeling of the final product.

[0039] Preferably, the shape structure of the product groove 107 and the specific setting of the vacuum hole 108 can be adjusted and avoided according to the actual product structure and the required adsorption position. The number of adsorbed intermediate products 100 can also be adjusted according to actual needs. It is preferred to perform the mover fixation, photosensitive element connection, and fixation release operations on multiple groups of products at the same time to achieve batch operations and improve installation efficiency.

[0040] In summary, the installation method of the optical image stabilization device of the present invention is based on the optical image stabilization device using elastic electrical connection. The mover and the stator are first connected by a conductive elastic wire to form an intermediate product, and then the mover in the intermediate product is fixed, and the mover is released after the photosensitive element is connected to the mover. By adopting the assembly process of post-installation of the photosensitive element provided by this scheme, the problem of cost loss of the photosensitive element caused by poor assembly of subsequent products when the photosensitive element is installed first in the assembly of the optical image stabilization device can be solved, which effectively saves costs and improves product yield. Preferably, the fixation of the mover can be achieved by means of variable viscosity glue, vacuum adsorption jigs, etc., and the fixation of the mover can be released after the photosensitive element is installed, so as to achieve non-destructive peeling of the final product.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, in any case, the embodiments should be considered exemplary and non-restrictive. Furthermore, it is apparent that the term "comprising" does not exclude other elements and steps, and the wording "a" does not exclude the plural. Multiple elements stated in a device claim may also be implemented by one element. The words first, second, etc. are used to indicate names and do not indicate any particular order.

Claims

1. A method for installing an optical image stabilization device, characterized in that: include: The mover and the stator are connected by conductive elastic wire to form an intermediate product; Fixing the mover in the intermediate product; Connecting the photosensitive element to the mover to form a final product; The fixation of the mover is released.

2. The method for installing an optical image stabilization device according to claim 1, wherein: The step of forming the intermediate product includes: placing the mover and the stator in the same plane and connecting them through the conductive elastic wire.

3. The method for installing an optical image stabilization device according to claim 1, wherein: The step of fixing the mover includes: providing a packaging carrier plate, and bonding the mover to the packaging carrier plate by using a viscosity-variable glue.

4. The method for installing an optical image stabilization device according to claim 3, wherein: The intermediate product is integrally bonded to the packaging carrier by using a variable viscosity adhesive.

5. The method for installing an optical image stabilization device according to claim 3, wherein: The step of releasing the fixation of the mover includes: changing the process conditions to reduce the adhesive force of the variable viscosity glue to separate the final product and the packaging carrier.

6. The method for installing an optical image stabilization device according to claim 3, wherein: The viscosity-variable glue is UV thermally degradable glue or high-temperature de-viscosity glue.

7. The method for installing an optical image stabilization device according to claim 1, wherein: The step of fixing the mover includes: providing a vacuum adsorption jig, placing the intermediate product in a product groove of the jig, and adsorbing the mover through vacuum air holes provided in the product groove.

8. The method for installing an optical image stabilization device according to claim 7, wherein: The step of releasing the fixation of the mover includes: turning off the vacuum generating device of the vacuum adsorption jig.

9. The method for installing an optical image stabilization device according to claim 1, wherein: The step of connecting the photosensitive element to the mover includes: the photosensitive element is connected to a metal wire with one end suspended in the air, and the suspended end of the metal wire is bonded to a pad on the mover.

10. The method for installing an optical image stabilization device according to claim 1, wherein: After the step of forming the intermediate product, the electrical properties of the intermediate product are tested.

11. The method for installing an optical image stabilization device according to claim 1, wherein: At the same time, multiple groups of products can be fixed with movers, connected with photosensitive elements, and released.

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