Test method of adhesive force of mesh points of light guide plate

Abstract

A test method of an adhesive force of mesh points of a light guide plate comprises the following steps: providing the light guide plate printed with the mesh points; checking whether the mesh points of the light guide plate are normal; placing the light guide plate in a temperature box, and holding a preset temperature for a first preset time; taking the light guide plate out of the temperature box, and under the normal temperature, standing upwards the mesh points of the light guide plate at least for a second preset time to ensure that the mesh points of the light guide plate are restored to a normal mechanism; providing a blade; drawing a plurality of grids with a preset size on the surface of the mesh points of the light guide plate; sticking the grids of the light guide plate mesh points to be tested by an adhesive tape with a preset adhesive force, tearing the adhesive tape in a manner of forming an angle of 90 DEG between one end of the adhesive tape and the light guide plate, and carrying out a plurality of operations of sticking the grids with the adhesive tape and then tearing at the same position; and checking whether the mesh points of the light guide are normal. The test method can test out the adhesive force between the mesh points of the light guide plate and the light guide plate after the light guide plate is in long-term use, and effectively screens out a product which is possible to generate problems after the mesh points of the light guide plate are in long-term use.

Description

technical field [0001] The invention relates to a test method, in particular to a method for testing the dot adhesion of a light guide plate. Background technique [0002] The light guide plate is widely used in the fields of backlight module technology and light box lighting. The principle is to use optical-grade acrylic / PC sheet, and then use high-tech materials with extremely high reflectivity and non-absorbing light to print light-guiding dots on the bottom of the optical-grade acrylic sheet with UV screen printing technology. The optical grade acrylic sheet is used to absorb the light emitted from the lamp to stay on the surface of the optical grade acrylic sheet. When the light hits each light guide point, the reflected light will spread to all angles, and then destroy the reflection condition by the light guide plate. Front shot. The light guide plate is a high-tech product that transforms the line light source into a surface light source, and the light guide networ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing detection methods for the quality of the light guide plate still remain at the basic detection level of whether there are black spots, leaks, defects, and whether the surface light source is uniform.

The industry does not have an effective test method for whether the dots of the light guide plate will peel off after long-term use, resulting in poor light guide effect of the light guide plate, and the uniformity of the surface light source cannot meet the use requirements.

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