Efficient LED wafer expander

Abstract

The invention discloses an efficient LED wafer expander which comprises a shell assembly and an air pump assembly. The air pump assembly comprises a lower air cylinder, an air pump and a flange, and amotor is located on the right side of a pump head and rotationally connected with the pump head through a rotating shaft at the output end of the motor; an air outlet pipe is arranged on the lower portion of the motor and fixedly connected with the motor, a piston is arranged on the upper side of a cylinder body, and the piston is in sliding connection with the cylinder body; a piston rod is located on the upper portion of the piston and fixedly connected with the piston. An original machine is changed, two air inlet pipes are arranged on the two sides of the air cylinder so that compressed air can enter the cylinder body from the two sides along a pipeline, the movement speed of the air cylinder is increased, and the wafer expanding yield is increased; the flange is used in the middle ofthe pipeline, and the pipeline can be detached; the air pump is damaged after long-time use, then the air pump can be replaced through the flange, and therefore the machine is convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of LED equipment, and in particular relates to an efficient LED crystal expander. Background technique [0002] Crystal expansion machine is also called wafer expansion machine or chip expansion machine, which is widely used in the grain expansion process in the production of light-emitting diodes, LEDs, integrated circuits and some special semiconductor devices. After the LED chips are produced from the manufacturer, the LED chips are densely fixed On the raw material film, due to the small gap between the LED chips, this kind of raw material cannot be directly grasped and bonded by the die-bonding machine, so it is necessary to expand the raw material film. Since the raw material film itself is elastic, the crystal expansion will make the raw material Stretching the film can change the distance between the LED chips on the raw film. [0003] The original crystal expander has certain limitations. It uses a...

AI Technical Summary

Problems solved by technology

[0003] The original crystal expander has certain limitations. It uses a cylinder to expand the crystal grains. The compressed air enters the cylinder through an intake pipe to force the piston rod to make a reciprocating linear motion. An intake pipe leads to the cylinder, which leads to the pipeline. The compressed gas is limited, which will affect the movement speed of the cylinder of the crystal expansion machine and affect the production capacity of grain expansion

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