Design and manufacturing method of light guide points on light guide plate

Abstract

The invention provides a design and manufacturing method of light guide points on a light guide plate. The design and manufacturing method includes 1, designing distributing position and size of a point of the light guide points, and controlling size of the point through laser lighting time or by controlling power of laser; meanwhile, dividing all the light guide points into several light guide point lines; 2, dividing point image into several areas, processing the light guide points among each area and inside the areas randomly during the process; or processing one by one the light guide points in odd number lines among the light guide point lines; after all the light guide points in the odd number lines are processed, processing one by one the light guide points in even number lines among the light guide point lines along the vertical direction until all the light guide points are processed. With the design and manufacturing method, possible influence on results such as electromagnetic interference and equipment temperature flutter and drift during pointing process is overcome, influence on light guide point processing from external factors can be minimized, and uniformity of the processed light guide plate is good.

Description

technical field [0001] The invention belongs to the field of laser processing, and in particular relates to a method for designing and manufacturing light guide dots on a light guide plate. Background technique [0002] Light guide plate lighting technology was first invented in 1986 by Japan Minto Corporation, and it is currently the mainstream method for backlighting LCD screens of notebook computers. Its working principle is to use the PMMA transparent light guide plate to introduce the pure white light emitted by the cold cathode fluorescent tube (line light source) from the end face of the transparent plate and diffuse it to the entire plate surface. Reflection, emitted from the plate surface (working surface) perpendicular to the incident surface of the light source. The light guide plate lighting uses the principle of total reflection of light on the interface of the transparent plate to deflect the light incident on the end surface by 90° and emit it from the front,...

AI Technical Summary

Problems solved by technology

However, at present, when lasers are used to process the light guide dots on the light guide plate, the dots are generally processed line by line, so that once there is interference during the processing, or due to the influence of factors such as temperature and time, the processed dots will be damaged. Drift occurs, so that the illumination of the light guide plate is not uniform enough, and there are more dark or bright areas

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