Detection device and detection method for internal defects of silicon wafer

Abstract

The invention discloses a detection device and a detection method for internal defects of a silicon wafer. The detection device comprises a detection module shell forming a darkroom, wherein the front of the detection module shell is provided with an operating board, and the detection module shell is provided with a test frame; the detection device further comprises a probe adjusting module, a line light source adjustment module, a loading conveying platform, an unloading conveying platform, and a necessary electrical control circuit and a power supply. The probe adjusting module can carry out three-dimensional spatial adjustment, including up-down adjustment, left-right adjustment, front-back adjustment and rotation angle adjustment, on a probe, and is fixed on the upper part of the test frame; the line light source adjustment module carries out three-dimensional spatial adjustment, including up-down adjustment, left-right adjustment, front-back adjustment and rotation angle adjustment, on the line light source, and is fixed at the lower part of the test frame; and the upper loading conveying platform and the lower unloading conveying platform are fixed on the detection module shell via a bracket. The detection device and the detection method can be used for breaking through the condition of uneven outgoing quality of the wafers in the past, and greatly reducing a series of defects of the wafers caused by the quality problem.

Description

technical field [0001] The invention relates to a silicon chip internal defect detection device and a detection method thereof, which is a visual detection method and belongs to the field of silicon chip detection. Background technique [0002] In the past few years, China's energy production has been growing rapidly. By the 21st century, China has the world's third largest energy production system, but the form of energy supply is not optimistic. In the context of heavy industry and large population, my country is even facing increasingly serious problems. The problem of energy use and supply, the solution of energy shortage is imminent. [0003] Therefore, solar energy, a green energy, is favored by the majority of people; solar cells must undergo relevant testing before leaving the factory, otherwise, once defective products enter the market, problems such as shortened service life of solar cells and insufficient power generation will occur. It causes huge waste and loss....

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Problems solved by technology

[0003] Therefore, solar energy, a green energy, is favored by the majority of people; solar cells must undergo relevant testing before leaving the factory, otherwise, once defective products enter the market, problems such as shortened service life of solar cells and insufficient power generation will occur. It causes huge waste and loss. Not only solar cells need to undergo relevant testing before leaving the factory, but even the raw materials (silicon wafers) for making solar cells should also undergo strict testing, so that the huge losses caused by defective products entering the market can be effectively controlled.

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