Image sensor driver and mobile terminal having same

Abstract

The utility model relates to an image sensor driver and a mobile terminal with the same, and the image sensor driver comprises an installation housing, a moving part, an image sensor, a driving mechanism, and a flexible circuit. A mounting part is arranged on one side of the mounting shell and is suitable for mounting a lens; the movable piece is located in the cavity of the mounting shell and is in rolling or sliding connection with the mounting shell; the image sensor is located in the cavity of the mounting shell and arranged on the side, facing the mounting part, of the movable piece. The driving mechanism is connected with the mounting shell and the movable piece and used for driving the movable piece to move in the preset direction; one end of the flexible circuit is electrically connected with the image sensor, the other end is fixedly connected with the mounting shell, and at least one bending structure is arranged between the two ends. According to the invention, the distance between the image sensor and the lens is controlled by driving the image sensor with relatively light weight, so that a focusing effect is achieved, and then the lens with relatively heavy weight is adapted.

Description

Technical Field

[0001] The present application relates to the technical field of optical instruments, and in particular to an image sensor driver and a mobile terminal having the same. Background Art

[0002] At present, most of the auto-focus camera modules use the method of driving the lens to achieve the focusing effect. For example, patent document CN219458881U discloses a high-thrust VCM motor and camera, in which a zoom assembly is driven by a magnetic group and a coil, thereby driving the lens on the zoom assembly to achieve zooming.

[0003] However, this driving method can only meet the needs of camera modules with small lenses and light weight. As the weight and size of the lens increase, the thrust of this driving method is difficult to meet the demand.

[0004] Therefore, how to focus drive a camera module with a heavy lens has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, the present application proposes an image sensor driver and a mobile terminal having the same.

[0006] According to one aspect of the present application, there is provided an image sensor driver, comprising: a mounting housing, a moving part, an image sensor, a driving mechanism and a flexible circuit;

[0007] The moving member is located inside the cavity of the mounting shell, and the moving member is connected to the mounting shell in a rolling or sliding manner;

[0008] The image sensor is located inside the cavity of the mounting shell, and the image sensor is arranged on a side of the moving part facing the mounting portion;

[0009] The driving mechanism is connected to the mounting shell and the moving member respectively, and the driving mechanism is used to drive the moving member to move along a preset direction;

[0010] One end of the flexible circuit is electrically connected to the image sensor, and the other end is fixedly connected to the mounting shell, and at least one bending structure is provided between the two ends.

[0011] In a possible implementation, the flexible circuit is provided with a fixing portion;

[0012] The fixing portion is fixedly connected to the mounting shell.

[0013] In a possible implementation, the flexible circuit is further provided with an input end, a connecting portion and an output end;

[0014] The input end, the connecting portion, the fixing portion and the output end are electrically connected in sequence, the input end is electrically connected to the image sensor, the fixing portion is connected to the mounting shell, and the output end protrudes out of the mounting shell.

[0015] In a possible implementation, the connecting portion and the input end are respectively located on two opposite sides of the image sensor, the connecting portion is located on a light receiving side of the image sensor, and the connecting portion is electrically connected to the input end after being bent.

[0016] In a possible implementation manner, a preset gap is left between the connecting portion and the image sensor.

[0017] In a possible implementation manner, the main body of the input end is a sheet-like structure, one side of the input end is electrically connected to the image sensor, and one end of the input end is electrically connected to the connecting portion.

[0018] In a possible implementation, it further includes a guiding mechanism;

[0019] The guide mechanism is located between the mounting shell and the movable member, and the movable member is connected with the mounting shell in a rolling or sliding manner through the guide mechanism.

[0020] In a possible implementation, the mounting shell includes an upper cover and a base;

[0021] The upper cover is interlocked with the base;

[0022] The mounting portion is arranged on the upper cover, and a mounting hole is formed on the mounting portion. The mounting hole passes through the mounting portion and the upper cover, and the mounting hole faces the light receiving side of the image sensor.

[0023] In a possible implementation, the driving mechanism includes a magnet and a coil;

[0024] The magnet is arranged on a side of the movable member facing the mounting shell, the coil is arranged on a side of the mounting shell facing the movable member, and the magnet and the coil are arranged opposite to each other.

[0025] According to another aspect of the present application, a mobile terminal is provided, comprising any one of the above-mentioned image sensor drivers.

[0026] The present application is suitable for matching lenses with a large weight, wherein the adapted lens is arranged on a mounting shell through a mounting portion, and the two ends of the mounted lens are respectively facing the outside of the mounting shell and the image sensor inside the mounting shell. The moving part is driven by a driving mechanism to slide inside the cavity of the mounting shell, wherein the sliding direction of the moving part is toward or away from the mounting portion, and close to or away from the lens, and then, under the drive of the driving mechanism, the image sensor arranged on the moving part is controlled to be close to or away from the lens, thereby realizing focus driving. The image sensor sends the acquired signal to the terminal processor for processing through a flexible circuit. Compared with the traditional focusing method of driving the lens to control the distance between the lens and the image sensor, which cannot drive a lens with a large weight, the present application achieves a focusing effect by driving an image sensor with a small weight and controlling the distance between it and the lens, thereby realizing adaptation of a lens with a large weight.

[0027] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0029] Figure 1 An exploded view of an image sensor driver according to an embodiment of the present application is shown;

[0030] Figure 2 A main structural diagram of an image sensor driver according to an embodiment of the present application is shown;

[0031] Figure 3 A main structural diagram of an image sensor driver according to another embodiment of the present application is shown;

[0032] Figure 4 A main structural diagram of a flexible circuit according to an embodiment of the present application is shown;

[0033] Figure 5 A schematic diagram showing the motion state of the flexible circuit according to an embodiment of the present application;

[0034] Figure 6 A main structural diagram of a flexible circuit according to another embodiment of the present application is shown;

[0035] Figure 7 A main structural diagram of a flexible circuit according to another embodiment of the present application is shown;

[0036] Figure 8 A main structural diagram of the guide mechanism of an embodiment of the present application is shown;

[0037] Fig. 9 A top view showing a guide mechanism according to an embodiment of the present application;

[0038] Fig.10 A main structural diagram showing a guide mechanism of another embodiment of the present application;

[0039] Fig.11 A top view of a guide mechanism according to another embodiment of the present application is shown. DETAILED DESCRIPTION

[0040] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0041] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0044] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0045] Figure 1 An exploded view of an image sensor driver according to an embodiment of the present application is shown. Figure 2 FIG. 2 shows a main structure diagram of an image sensor driver according to an embodiment of the present application. Figure 1 and Figure 2 As shown, the image sensor driver includes: a mounting shell 100, a moving part 200, an image sensor 300, a driving mechanism 600 and a flexible circuit 400; a mounting portion 111 is provided on one side of the mounting shell 100, and the mounting portion 111 is suitable for mounting a lens 700; the moving part 200 is located inside the cavity of the mounting shell 100, and the moving part 200 is connected to the mounting shell 100 by rolling or sliding; the image sensor 300 is located inside the cavity of the mounting shell 100, and the image sensor 300 is arranged on the side of the moving part 200 facing the mounting portion 111; the driving mechanism 600 is respectively connected to the mounting shell 100 and the moving part 200, and the driving mechanism 600 is used to drive the moving part 200 to slide; the main body of the flexible circuit 400 is a folding structure, and the flexible circuit 400 is respectively located on two opposite sides of the image sensor 300, the flexible circuit 400 located on the light receiving side of the image sensor 300 protrudes out of the mounting shell 100, and the flexible circuit 400 located on the other side of the image sensor 300 is electrically connected to the image sensor 300.

[0046] The present application is suitable for matching lenses with a large weight, wherein the adapted lens 700 is arranged on the mounting shell 100 through the mounting portion 111, and the two ends of the mounted lens 700 are respectively facing the outside of the mounting shell 100 and the image sensor 300 inside the mounting shell 100. The driving mechanism 600 drives the movable member 200 to slide inside the cavity of the mounting shell 100, wherein the sliding direction of the movable member 200 is toward or away from the mounting portion 111, and close to or away from the lens 700, and then under the drive of the driving mechanism 600, the image sensor 300 arranged on the movable member 200 is controlled to approach or move away from the lens 700 to achieve focus drive. The image sensor 300 sends the acquired signal to the terminal processor for processing through the flexible circuit 400. Compared with the traditional focusing method of driving the lens 700 to control the distance between the lens 700 and the image sensor 300, which cannot drive the lens 700 with a heavier weight, the present application achieves the focusing effect by driving the image sensor 300 with a lighter weight and controlling the distance between it and the lens 700, thereby realizing the adaptation of the lens 700 with a heavier weight.

[0047] In one possible implementation, Figure 4 As shown, the flexible circuit 400 is provided with an input end 440, a connecting portion 430, a fixing portion 420 and an output end 410; the input end 440, the connecting portion 430, the fixing portion 420 and the output end 410 are electrically connected in sequence, the input end 440 is electrically connected to the image sensor 300, the fixing portion 420 is connected to the mounting shell 100, and the output end 410 protrudes out of the mounting shell 100.

[0048] Furthermore, the connection portion 430 and the input end 440 are located on opposite sides of the image sensor 300 , respectively. The connection portion 430 is located on the light-receiving side of the image sensor 300 . The connection portion 430 is electrically connected to the input end 440 after being bent to form a folded structure of the flexible circuit 400 .

[0049] Furthermore, the main body of the connecting portion 430 is in a strip-shaped structure, and the two opposite ends of the connecting portion 430 in the body length direction are electrically connected to the fixing portion 420 and the input end 440 respectively. At least one L-shaped bend is provided on the connecting portion 430 to form a folding structure of the main body of the flexible circuit 400, so that when the input end 440 moves up and down with the image sensor 300, as shown in FIG. Figure 5 As shown, the flexible circuit 400 can change the bending angle of the L-shaped structure on the connecting portion 430 to ensure that the flexible circuit 400 does not pull the movable part and the image sensor 300.

[0050] In a possible implementation, a preset gap is left between the connecting portion 430 and the image sensor 300 to ensure that the total length of the flexible circuit 400 has a margin for the moving range of the image sensor 300 and does not affect the movement of the image sensor 300 .

[0051] Furthermore, there are two connecting parts 430 , the length directions of the two connecting parts 430 are parallel to each other, and the light receiving area of ​​the image sensor 300 is located between the two connecting parts 430 .

[0052] In a possible implementation, the main body of the input terminal 440 is a sheet-like structure, one side of the input terminal 440 is electrically connected to the image sensor 300, and one end of the input terminal 440 is electrically connected to the connecting portion 430. The shape of the input terminal 440 matches the image sensor 300. Preferably, the main body of the input terminal 440 is rectangular.

[0053] In another possible implementation, Figure 6 As shown, there is only one connection portion 430 , that is, the connection portion 430 is disposed on one side, and the connection portion 430 is disposed away from the light receiving area of ​​the image sensor 300 .

[0054] In another possible implementation, Figure 7 As shown, the connection part 430 is multi-stranded, that is, the connection part 430 is in a grid structure, and there are two connection parts 430, which are arranged on both sides and avoid the light receiving area of ​​the image sensor 300.

[0055] It should be noted that although Figure 4 , Figure 6 and Figure 7The flexible circuit 400 is introduced as an example, but those skilled in the art will appreciate that the present application should not be limited thereto. In fact, the user can flexibly set the specific structure of the flexible circuit 400 according to personal preferences and / or actual application scenarios, as long as the flexible circuit 400 can change the bending angle of the L-shaped structure on the connecting portion 430 to ensure that the flexible circuit 400 does not pull the moving part and the image sensor 300.

[0056] In a possible implementation, the fixing portion 420 is provided with a positioning hole, and the mounting shell 100 is provided with a protrusion matching the positioning hole, and the flexible circuit 400 is fixedly connected to the mounting shell 100 through the positioning hole and the protrusion. There are two positioning holes and two protrusions.

[0057] In a possible implementation, a guide mechanism 500 is further included; the guide mechanism 500 is located between the mounting shell 100 and the movable member 200, and the movable member 200 is rollingly or slidingly connected to the mounting shell 100 through the guide mechanism 500. By providing the guide mechanism 500, the sliding direction accuracy and sliding stability of the movable member 200 are ensured.

[0058] Furthermore, the guide mechanism 500 includes a guide groove and a ball 520; the guide groove is arranged on the side of the mounting shell 100 facing the movable member 200, or at least one of the sides of the movable member 200 facing the mounting shell 100; the ball 520 matches the guide groove, and the ball 520 is located inside the groove body of the guide groove. The overall structure is relatively simple, which effectively reduces the production cost.

[0059] like Figure 8 As shown, the guide groove includes a guide rod 510; the main body of the guide rod 510 is a columnar structure, and there are two guide rods 510, the axes of the two guide rods 510 are parallel to each other and face the sliding direction of the moving member 200, and the ball 520 is respectively in contact with the two guide rods 510. The two parallel guide rods 510 form a guide groove, so that the ball 520 can roll along the axial direction of the guide rod 510 to achieve guidance.

[0060] Preferably, there are two guide mechanisms 500, the two guide mechanisms 500 and the driving mechanism 600 are located on the same side of the moving member 200, and the two guide mechanisms 500 are located at opposite ends of the driving mechanism 600. Figure 8 and Fig. 9 As shown, the driving mechanism 600 is composed of two guide rods 510 forming a guide groove, and the guide groove is set on the mounting shell 100. The ball bearings 520 are respectively in contact with the guide groove and the outer side wall of the moving member 200. There are more than two ball bearings 520 to support the moving member 200. Fig.10 and Fig.11As shown, the driving mechanism 600 is composed of four guide rods 510 forming two guide grooves, the two guide grooves are respectively arranged on the mounting shell 100 and the movable member 200, and the balls 520 are respectively in contact with the two guide grooves, wherein there are more than two balls 520 to guide the movable member 200.

[0061] In a possible implementation, the mounting shell 100 includes an upper cover 110 and a base 120; the upper cover 110 and the base 120 are interlocked; the mounting portion 111 is disposed on the upper cover 110, and the mounting portion 111 is provided with a mounting hole, which passes through the mounting portion 111 and the upper cover 110, and faces the image sensor 300. The overall structure is relatively simple, which effectively reduces the production cost.

[0062] In a possible implementation, the driving mechanism 600 includes a magnet 610 and a coil 620; the magnet 610 is disposed on the side of the moving member 200 facing the mounting shell 100, and the coil 620 is disposed on the side of the mounting shell 100 facing the moving member 200, and the magnet 610 and the coil 620 are disposed opposite to each other. Common technical means in the art may be used here.

[0063] Furthermore, a yoke is provided on the side of the coil 620 facing away from the magnet 610. The yoke is provided to increase the magnetic flux density and enhance the electromagnetic force.

[0064] In a possible implementation, a position sensor is further included. When the moving member 200 moves, a position change signal is detected by the position sensor, and real-time position information is fed back.

[0065] According to another aspect of the present application, a mobile terminal is provided, comprising any one of the above-mentioned image sensor drivers.

[0066] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An image sensor driver, characterized in that: include: Install the housing, moving parts, image sensor, drive mechanism and flexible circuit; A mounting portion is provided on one side of the mounting shell, and the mounting portion is suitable for mounting a lens; The moving member is located inside the cavity of the mounting shell, and the moving member is connected to the mounting shell in a rolling or sliding manner; The image sensor is located inside the cavity of the mounting shell, and the image sensor is arranged on a side of the moving part facing the mounting portion; The driving mechanism is connected to the mounting shell and the moving member respectively, and the driving mechanism is used to drive the moving member to move along a preset direction; One end of the flexible circuit is electrically connected to the image sensor, and the other end is fixedly connected to the mounting shell, and at least one bending structure is provided between the two ends.

2. The image sensor driver according to claim 1, wherein: The flexible circuit is provided with a fixing portion; The fixing portion is fixedly connected to the mounting shell.

3. The image sensor driver according to claim 2, characterized in that: The flexible circuit is also provided with an input end, a connecting portion and an output end; The input end, the connecting portion, the fixing portion and the output end are electrically connected in sequence, the input end is electrically connected to the image sensor, the fixing portion is connected to the mounting shell, and the output end protrudes out of the mounting shell.

4. The image sensor driver according to claim 3, characterized in that: The connecting portion and the input end are respectively located on two opposite sides of the image sensor, the connecting portion is located on a light receiving side of the image sensor, and the connecting portion is electrically connected to the input end after being bent.

5. The image sensor driver according to claim 4, characterized in that: A preset gap is left between the connecting portion and the image sensor.

6. The image sensor driver according to claim 4, characterized in that: The main body of the input end is in a sheet-like structure, one side of the input end is electrically connected to the image sensor, and one end of the input end is electrically connected to the connecting portion.

7. The image sensor driver according to any one of claims 1 to 6, characterized in that: It also includes a guiding mechanism; The guide mechanism is located between the mounting shell and the movable member, and the movable member is connected with the mounting shell in a rolling or sliding manner through the guide mechanism.

8. The image sensor driver according to claim 7, characterized in that: The installation shell includes an upper cover and a base; The upper cover is interlocked with the base; The mounting portion is arranged on the upper cover, and a mounting hole is formed on the mounting portion. The mounting hole passes through the mounting portion and the upper cover, and the mounting hole faces the light receiving side of the image sensor.

9. The image sensor driver according to claim 7, characterized in that: The driving mechanism includes a magnet and a coil; The magnet is arranged on a side of the movable member facing the mounting shell, the coil is arranged on a side of the mounting shell facing the movable member, and the magnet and the coil are arranged opposite to each other.

10. A mobile terminal, characterized in that: The invention comprises the image sensor driver as claimed in any one of claims 1 to 9.

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