CN111405156B

CN111405156B - Camera module and electronic equipment

Info

Publication number: CN111405156B
Application number: CN202010206215.4A
Authority: CN
Inventors: 陈宇灏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2022-05-20
Anticipated expiration: 2040-03-20
Also published as: CN111405156A

Abstract

The invention discloses a camera module, which comprises a base (100), a lens, a photosensitive chip (200) and a driving mechanism (300), wherein the lens is arranged opposite to the photosensitive chip (200), the driving mechanism (300) comprises an electrowetting electrode (310) and electrowetting liquid (330), the electrowetting liquid (330) is arranged on the base (100), the electrowetting liquid (330) is connected with the photosensitive chip (200), and when the electrowetting electrode (310) is in an electrified state, the electrowetting liquid (330) drives the photosensitive chip (200) to move towards or away from the lens through deformation. Above-mentioned scheme can be solved present module of making a video recording and have the higher problem of energy consumption at the in-process that zooms. The invention discloses an electronic device.

Description

Camera module and electronic equipment

Technical Field

The invention relates to the technical field of communication equipment, in particular to a camera module and electronic equipment.

Background

At present, electronic equipment generally disposes the module of making a video recording, and the module of making a video recording can realize electronic equipment's shooting function. In order to achieve a better shooting effect, a zoom motor is generally configured in an existing electronic device, and the zoom motor can drive a lens to move, so that a distance between the lens and a photosensitive chip is changed, and a purpose of zooming is achieved.

Along with the promotion of user's demand, the size of sensitization chip is bigger and bigger, and the sensitization chip of large tracts of land is more and more commonly used in the module of making a video recording. Along with the increase of the size of sensitization chip, the volume of the camera lens that matches with it is also bigger and bigger, and what follows with, the weight of camera lens is bigger and bigger, and this leads to zooming motor energy consumption in the course of the work higher, and then can lead to the module of making a video recording to appear the heat dissipation problem, simultaneously, also can lead to electronic equipment's battery duration variation.

Disclosure of Invention

The invention discloses a camera module, which aims to solve the problem that the energy consumption of the existing camera module is high in the zooming process.

In order to solve the problems, the invention adopts the following technical scheme:

in a first aspect, the embodiment of the invention discloses a camera module, which comprises a base, a lens, a photosensitive chip and a driving mechanism, wherein the lens is arranged opposite to the photosensitive chip, the driving mechanism comprises an electrowetting electrode and electrowetting liquid, the electrowetting liquid is arranged on the base, the electrowetting liquid is connected with the photosensitive chip, and the electrowetting liquid drives the photosensitive chip to move towards or away from the lens through deformation when the electrowetting electrode is in an electrified state.

In a second aspect, an embodiment of the present invention discloses an electronic device, which includes the camera module described above.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the focusing process of the camera module disclosed by the embodiment of the invention, the voltage of the electrowetting electrode can be controlled, so that the deformation of electrowetting liquid is adjusted. Because the sensitization chip sets up on electrowetting liquid, consequently the deformation of electrowetting liquid can drive sensitization chip and remove, can change the distance between sensitization chip and the camera lens finally, and then realize making a video recording the focusing of module. Compared with the traditional method of changing the distance between the lens and the photosensitive chip by driving the lens, the camera module disclosed by the embodiment of the invention drives the photosensitive chip, and as the photosensitive chip is light in weight, a large driving force is not required to be applied in the focusing process, so that the focusing energy consumption can be reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 and fig. 2 are schematic partial structural diagrams of a camera module disclosed in an embodiment of the present invention in different states.

Description of reference numerals:

100-base, 110-circuit board, 111-through hole, 120-reinforcing plate,

200-photosensitive chip,

300-drive mechanism, 310-electrowetting electrode, 320-containment structure, 321-first substrate, 322-second substrate, 323-flexible structure, 324-hydrophobic layer, 330-electrowetting liquid,

400-Flexible Electrical connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 2, an embodiment of the present invention discloses a camera module, which can be applied to an electronic device. The camera module disclosed by the embodiment of the invention comprises a base 100, a lens, a photosensitive chip 200 and a driving mechanism 300.

The base 100 is a base member of the camera module, and the base 100 can provide an installation base for at least a part of the constituent members of the camera module. In the embodiment of the present invention, the driving mechanism 300 and the photosensitive chip 200 may be directly or indirectly disposed on the base 100. The lens may be disposed on the base 100, or may be disposed on another member of the camera module. Alternatively, the susceptor 100 may be a substrate.

The lens is arranged opposite to the photosensitive chip 200, and the photosensitive chip 200 can sense light rays penetrating through the lens, so that images are generated through sensing. In a specific shooting process, focusing of the camera module can be achieved by adjusting the distance between the lens and the photosensitive chip 200.

In the embodiment of the present invention, the driving mechanism 300 is connected to the photosensitive chip 200, and the driving mechanism 300 drives the photosensitive chip 200 to move, so as to implement focusing. In particular, the drive mechanism 300 includes an electrowetting electrode 310 and an electrowetting liquid 330. An electrowetting fluid 330 is disposed on the base 100. The electrowetting fluid 330 is connected to the photosensitive chip 200. The electrowetting liquid 330 may be a liquid having electrowetting properties, such as water.

The electrowetting liquid 330 may be deformed when the electrowetting electrodes 310 are in the powered state. The electrowetting liquid 330 drives the photosensitive chip 200 to move towards or away from the lens through deformation, and finally focusing is achieved.

The deformation of the electrowetting liquid 330 uses the electrowetting principle. The electrowetting principle achieves driving of the deformation of a liquid by adjusting the electrical potential applied between the liquid and the solid, thereby changing the surface tension of the liquid (here electrowetting liquid 330), and thus the contact angle between the liquid and the solid. The electrowetting principle is a well-known technique and will not be described in detail here. In an embodiment of the present invention, the electrowetting electrodes 310 are capable of deforming the electrowetting liquid 330 in the powered state.

In a specific operation process, when the electrowetting electrode 310 is not energized, the electrowetting liquid 330 may assume a condensed state due to its surface tension, and thus may be condensed to form a thick liquid bead. Under the condition that the electrowetting electrodes 310 are powered on, the voltage applied by the electrowetting electrodes 310 enables the electrowetting liquid 330 to be influenced by the electrowetting effect and be pulled to the periphery, so that the electrowetting liquid 330 becomes flat, in this case, the thickness of the electrowetting liquid 330 becomes thin, so that the photosensitive chip 200 can be far away from the lens, and of course, by adjusting the voltage of the electrowetting electrodes 310, the thickness of the electrowetting liquid 330 can be changed, so that the photosensitive chip 200 moves in the direction close to or far away from the lens.

In the focusing process of the camera module disclosed by the embodiment of the invention, the voltage of the electrowetting electrode 310 can be controlled, so that the deformation of the electrowetting liquid 330 can be adjusted. Because the photosensitive chip 200 is disposed on the electrowetting liquid 330, the deformation of the electrowetting liquid 330 drives the photosensitive chip 200 to move, and finally the distance between the photosensitive chip 200 and the lens can be changed, thereby realizing the focusing of the camera module. Compared with the traditional method of changing the distance between the lens and the photosensitive chip 200 by driving the lens, the camera module disclosed by the embodiment of the invention drives the photosensitive chip 200, and as the photosensitive chip 200 is light, a large driving force does not need to be applied in the focusing process, so that the energy consumption of focusing can be reduced.

The driving mechanism 300 disclosed in the embodiment of the present invention may further include a receiving structure 320, where the receiving structure 320 has a receiving space, and the receiving structure 320 has a receiving space. The electrowetting liquid 330 is filled in the accommodating space. The photo-sensing chip 200 is disposed on the receiving structure 320 and thus indirectly disposed on the electrowetting fluid 330. In a specific operation process, the electrowetting fluid 330 is deformed to drive the photosensitive chip 200 through the accommodating structure 320. The containment structure 320 can provide space for the electrowetting liquid 330 to slow evaporation of the electrowetting liquid 330. At the same time, the containment structure 320 is able to better contain the electrowetting liquid 330, thereby avoiding splashing of the electronic device during a drop. Clearly, the receiving formation 320 clearly provides greater stability to the drive mechanism 300.

To allow for better deformation of the electrowetting liquid 330 in an electric field, the electrowetting electrode 310 may optionally be arranged on the containment structure 320 so as to be closer to the electrowetting liquid 330.

In the present embodiment, the structure of the accommodating structure member 320 may be various, and in a specific embodiment, the accommodating structure member 320 may be an elastic sealing film, for example, a polymer film. The elastic sealing film has good elasticity, has small limitation on the deformation of the electrowetting liquid 330, and is beneficial to improving the driving effect of the deformed electrowetting liquid 330 on the photosensitive chip 200.

Referring to fig. 1 and fig. 2 again, in another specific embodiment, the accommodating structure 320 may include a first substrate 321, a second substrate 322, and a flexible structure 323, the first substrate 321 is disposed on the base 100, the second substrate 322 is disposed at a distance from the first substrate 321, the photosensitive chip 200 is disposed on the second substrate 322, the flexible structure 323 is connected between the first substrate 321 and the second substrate 322, and the first substrate 321, the second substrate 322, and the flexible structure 323 form an accommodating space. The second substrate 322 can provide a more stable mounting position for the photosensitive chip 200, thereby improving the mounting effect of the photosensitive chip 200. The first substrate 321 has a larger area, so that the driving mechanism 300 can be stably mounted on the base 100. In particular, the flexible structure 323 may be a flexible film.

In a further technical scheme, a hydrophobic layer 324 is disposed on a surface of the first substrate 321 facing the electrowetting liquid 330, and the hydrophobic layer 324 can better enable the electrowetting liquid 330 to have better surface energy and more easily maintain a liquid droplet state. Similarly, the surface of the second substrate 322 facing the electrowetting liquid 330 may also be provided with a hydrophobic layer 324, so that the electrowetting liquid 330 has better surface energy.

In the driving mechanism 300 disclosed in the embodiment of the present invention, the electrowetting electrode 310 may be disposed on the first substrate 321, the first substrate 321 may be a fixed base for supporting the electrowetting liquid 330, and under the action of the electrowetting electrode 310, the electrowetting electrode 310 can change a contact angle with the first substrate 321, thereby implementing deformation.

In particular, the electrowetting electrodes 310 may be arranged in an array on the first substrate 321, so that by voltage adjustment of the respective electrowetting electrodes 310, a finer deformation adjustment of the electrowetting liquid 330 is achieved.

The camera module disclosed by the embodiment of the invention has less installation limitation on the lens because the lens is not required to be driven, thereby more easily realizing the installation design of the lens. Optionally, the camera module may further include a lens holder, the lens holder is disposed on the base 100, and the lens is disposed on the lens holder, so as to implement the installation. The lens holder is installed on the base 100, the photosensitive chip 200 is located in the area surrounded by the lens holder, and the lens holder can be made of a shading material, so that the photosensitive chip 200 can only sense light penetrating through the lens, the interference of stray light in the environment can be avoided, and the imaging quality is improved.

In the camera module disclosed in the embodiment of the present invention, the base 100 may have a plurality of types, the base 100 may include a circuit board 110, and the photosensitive chip 200 is electrically connected to the circuit board 110 through the flexible electrical connector 400. In this case, the base 100 can supply power to the photosensitive chip 200 as well as the mounting base of the camera module. Specifically, flexible electrical connector 400 may be a flexible wire, a flexible circuit board, etc., and the specific type of flexible electrical connector 400 is not limited by the embodiments of the present invention.

In order to improve the supporting strength, the base 100 may further include a reinforcing plate 120, and the reinforcing plate 120 is fixed to a side of the circuit board 110 facing away from the lens. The reinforcing plate 120 can perform a reinforcing function. Specifically, the reinforcing plate 120 may be a metal plate, such as a stainless steel plate. In this case, the reinforcing plate 120 not only can play a role of reinforcement, but also can optimize the heat dissipation of the entire camera module.

Alternatively, the circuit board 110 may be formed with a through hole 111 penetrating through the thickness direction thereof, the driving mechanism 300 is at least partially disposed in the through hole 111, and the driving mechanism 300 is disposed on the reinforcing plate 120. In this case, the reinforcing plate 120 can directly support the driving mechanism 300, and can also directly radiate heat to the driving mechanism 300. Since the driving mechanism 300 is at least partially disposed in the through hole 111, the stacking height between the driving mechanism 300 and the base 100 can be made smaller, which is beneficial for designing the camera module in a thinner direction, and is further beneficial for designing the electronic device in a thinner direction.

Based on the camera module disclosed by the embodiment of the invention, the embodiment of the invention discloses electronic equipment, and the disclosed electronic equipment comprises the camera module.

The electronic device disclosed in the embodiment of the present invention may be a mobile phone, a tablet computer, an electronic book reader, a game machine, a wearable device (e.g., smart glasses), or may be other types of electronic devices.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a camera module, its characterized in that includes base (100), camera lens, sensitization chip (200) and actuating mechanism (300), wherein:

the lens is arranged opposite to the photosensitive chip (200), the driving mechanism (300) comprises an electrowetting electrode (310) and electrowetting liquid (330), the electrowetting liquid (330) is arranged on the base (100), the electrowetting liquid (330) is connected with the photosensitive chip (200), and under the condition that the electrowetting electrode (310) is not electrified, the electrowetting liquid (330) is converged to form a thicker liquid bead due to the surface tension of the electrowetting liquid (330); when the electrowetting electrode (310) is in a power-on state, the electrowetting liquid (330) is affected by the electrowetting action of voltage applied by the electrowetting electrode (310), so that the electrowetting liquid (330) is flattened, and the thickness of the electrowetting liquid (330) is thinned, so that the photosensitive chip (200) can move away from the lens;

the driving mechanism (300) further comprises a containing structure member (320), the containing structure member (320) is provided with a containing space, the electrowetting liquid (330) is filled in the containing space, the photosensitive chip (200) is arranged on the containing structure member (320), the containing structure member (320) comprises a first substrate (321), a second substrate (322) and a flexible structure member (323), wherein:

the first substrate (321) is arranged on the base (100), the second substrate (322) is arranged at a distance from the first substrate (321), the photosensitive chip (200) is arranged on the second substrate (322), the flexible structural member (323) is connected between the first substrate (321) and the second substrate (322), and the first substrate (321), the second substrate (322) and the flexible structural member (323) form the accommodating space;

the base (100) comprises a circuit board (110) and a reinforcing plate (120), the reinforcing plate (120) is fixed on one side, deviating from the lens, of the circuit board (110), a through hole (111) penetrating through the circuit board (110) in the thickness direction is formed in the circuit board, at least part of the driving mechanism (300) is arranged in the through hole (111), and the driving mechanism (300) is arranged on the reinforcing plate (120).

2. The camera module according to claim 1, characterized in that the electrowetting electrode (310) is arranged on the receiving structure (320).

3. Camera module according to claim 1, characterized in that the surface of the first substrate (321) and/or the second substrate (322) facing the electrowetting liquid (330) is provided with a hydrophobic layer (324).

4. The camera module of claim 1, further comprising a lens holder, wherein the lens holder is disposed on the base (100), and wherein the lens is disposed on the lens holder.

5. The camera module according to claim 1, wherein the photosensitive chip (200) is electrically connected to the circuit board (110) by a flexible electrical connector (400).

6. An electronic device comprising the camera module of any one of claims 1-5.