Testing method for bending resistance of light guide plate

Abstract

The invention discloses a testing method for bending resistance of a light guide plate. The method comprises the steps that the light guide plate to be tested is suspended inside an incubator, so that high-temperature aging testing of the light guide plate is carried out, and the light guide plate is taken out of the incubator after testing is finished; the light guide plate is suspended inside a hot and cold impact machine, so that temperature impact testing of the light guide plate is carried out, and the light guide plate is taken out of the hot and cold impact machine after testing is finished; the light guide plate obtained after the high-temperature aging testing and the temperature impact testing are carried out is arranged on a testing platform in a standing mode under normal temperature; whether the light guide plate cracks or deforms or whether surface distribution of the light guide plate is uniform or not is detected visually under the illumination condition with the preset illumination value. The testing method for the bending resistance of the light guide plate is easy and convenient to implement, the problem that after being used for a long time, the light guide plate deforms or cracks or the like can be effectively simulated, and therefore the superior light guide plate with the high bending resistance can be screened out, and a basis is provided for product development. The screened light guide plate still has the good flatness and reliability after being used for a long time, and long-term use requirements of customers are met.

Description

technical field [0001] The invention relates to the lighting field, in particular to a method for testing the bending resistance of a light guide plate. Background technique [0002] The light guide plate is widely used in the field of backlight module technology and light box lighting, and is used to transform the line light source into a surface light source. [0003] At present, the method of testing the quality of the light guide plate is only based on visual inspection of whether there are black spots, leaks, and defects on the light guide plate, whether the surface light source is uniform, and whether the light guide plate is fogged or cracked. However, after long-term use of the light guide plate, whether there will be abnormalities such as cracking and deformation of the light guide plate due to insufficient bending resistance of the light guide plate, resulting in insufficient illumination of the surface light source and poor brightness uniformity, there is no effec...

AI Technical Summary

Problems solved by technology

[0003] At present, the method of testing the quality of the light guide plate is only based on visual inspection of whether there are black spots, leaks, or defects on the light guide plate, whether the surface light source is uniform, and whether the light guide plate is fogged or cracked.

However, after long-term use of the light guide plate, whether there will be abnormalities such as cracking and deformation of the light guide plate due to insufficient bending resistance of the light guide plate, resulting in insufficient illumination of the surface light source and poor brightness uniformity, etc., there is no effective test method.

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