A camera module signal wiring method

Abstract

The invention discloses a camera module signal wiring method, which is implemented in the camera module signal line wiring structure. The signal line wiring structure includes: a substrate body, an optical sensor and a plurality of components, wherein the substrate body is provided with There is a wiring PAD, the optical sensor is located on the front of the substrate body, and multiple components are distributed on the front of the substrate body and located outside the optical sensor; the signal routing method includes the following steps: (1) signal detour parallel routing ; (2) smoothing. Under the condition of relatively limited design space, the present invention matches the length of the differential signal (differential signal) pair through the wiring method of the data signal line in the optical sensor, so that the transmission rate is consistent and better anti-interference performance is achieved. Higher speed, fewer signal wire connections and better differential impedance control of wire-to-signal enable the camera module to have the advantages of stable operation and strong anti-interference performance.

Description

technical field [0001] The invention relates to the field of camera module design, in particular to a signal routing method of a camera module. Background technique [0002] With the continuous improvement and update of new bus protocols, the requirements for CCM design modules are also increasing day by day. Various signals are not just purely connected and conducted, especially for MIPI signals. [0003] High-end pixel sensors basically have MIPI signal pairs above 2Lane. At present, with the emergence of high-pixel optical sensors and mature technology (such as 8M, 13M, etc.), the use of high-end pixel sensors is becoming more and more common. Limited, it is impossible to meet the ideal wiring requirements. For example, in the past, the signal line pairs are always kept in parallel with each other, and the final signal line length difference between the signal pairs is large, which will cause signal distortion in the camera module and fail to work. and job instability. ...

AI Technical Summary

Problems solved by technology

At present, with the emergence of high-pixel optical sensors and mature technology (such as 8M, 13M, etc.), the use of high-end pixel sensors is becoming more and more common. Limited, it is impossible to meet the ideal wiring requirements. For example, in the past, the signal line pairs are always kept in parallel with each other, and the final signal line length difference between the signal pairs is large, which will cause signal distortion in the camera module and fail to work. and job instability

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