A mobile terminal and its photographing device

Abstract

An embodiment of the present invention provides a mobile terminal and a photographing device thereof. The photographing device includes: a camera module interface circuit, the camera module interface circuit is arranged on a main board, includes a baseband circuit and an optical anti-shake drive module, and the optical anti-shake drive module It is connected with the baseband circuit; the optical anti-shake camera module includes an anti-shake motor module, a focus motor module, a Hall module and a camera module circuit board, and the anti-shake motor module, the focus motor module and the Hall module are respectively connected with the optical anti-shake driver The modules are connected; the camera module circuit board includes at least one image sensing module and a first gyroscope module, each image sensing module is connected to the baseband circuit; the first gyroscope module is respectively connected to the baseband circuit and the optical anti-shake drive module. The embodiment of the present invention effectively solves the problem of local heating of the optical anti-shake camera module and the problem of interference between modules, improves the anti-shake performance of the camera, saves layout space, and is conducive to improving reliability and user experience.

Description

technical field [0001] The present invention relates to the technical field of mobile terminals, in particular to a photographing device for a mobile terminal and a mobile terminal. Background technique [0002] At present, camera technology with optical anti-shake has been applied in mobile phones. With the rapid development of mobile phones, users' requirements are getting higher and higher. The anti-shake performance) is better. In addition, the requirements for the optical image stabilization camera module are getting higher and higher in the design of mobile phones. Affect the optical image stabilization performance and camera effect of the mobile phone, and may cause the local temperature of the whole machine to be too high, reducing the comfort of the user experience. [0003] related technologies, such as figure 1 As shown, the internal circuit of the optical image stabilization camera module mainly includes an image sensor module (image sensing module) circuit, a ...

AI Technical Summary

Problems solved by technology

[0005] First, the heating of the optical image stabilization camera module circuit board is a big problem, and as users pursue higher and higher camera pixels, higher frame rates, and higher optical performance, these all mean heat generation. It is getting more and more serious, and the heat dissipation design of the ultra-thin mobile phone in the area of ​​the optical image stabilization camera module is limited, and the application of the optical image stabilization camera module will face the bottleneck of solving the heat dissipation problem

[0006] Second, the gyroscope is sensitive to temperature, and the temperature change on the circuit board of the optical image stabilization camera module will cause the data of the shake angular velocity detected by the gyroscope to drift, which directly affects the optical image stabilization performance of the camera.

[0007] Third, there is no way to make the size of the optical image stabilization camera module circuit board smaller, and the blind and buried hole process must be used for layout (layout), which has poor reliability.

[0008] Fourth, the internal wiring and layout space of the optical image stabilization camera module circuit board is limited, and the interference of the optical image stabilization drive module circuit to the image sensor module will affect the imaging quality of the image sensor module

And due to the existence of interference, the optical anti-shake drive module circuit can only use linear drive to drive motors (such as focus motors and anti-shake motors, etc.) to reduce interference, but cannot use low-power PWM (Pulse Width Modulation, pulse width modulation) ) drive mode drive motor

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