Preparation method of high-transmittance light guide plate

Abstract

The invention discloses a preparation method of a high-transmittance light guide plate, which comprises the following steps of: forming a plurality of grooves in at least one main surface of a curved-surface light guide plate, pressing and fitting an optical film layer and the curved-surface light guide plate, and performing auxiliary integration between the curved-surface light guide plate and the optical film layer through a tight connection structure, a plurality of grooves are formed in the surface of the light guide plate, so that stress generated after the light guide plate is bent can be reduced, the risk that the light guide plate is scratched is reduced, and on the basis of improving the display effect, the tightness of integrated contact between the filling adhesive and the optical film layer is improved through the use of a tight connection structure between the optical film layer and the curved-surface light guide plate; therefore, the overall stability between the curved-surface light guide plate and the optical film layer is ensured, the light guide performance is improved, and the light guide working effect is ensured.

Description

technical field [0001] The invention relates to the technical field of light guide plates, in particular to a preparation method of a high transmittance light guide plate. Background technique [0002] The light guide plate is made of optical grade acrylic / PC sheet, and then uses high-tech materials with extremely high refractive index and no light absorption, and uses laser engraving, V-shaped cross grid engraving, and UV screen printing technology on the bottom surface of the optical grade acrylic sheet. Print the light guide points; use the optical grade acrylic sheet to absorb the light emitted from the lamp and 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 conditions by The light guide plate is emitted from the front. [0003] The Chinese patent document with the currently authorized announcement number CN106873073A discloses a light guid...

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Problems solved by technology

[0004] In the above solution, for the connection between the curved light guide plate and the optical film layer, grooves are arranged equidistantly on the back concave surface of the light guide plate, and filling glue is placed in the groove to connect with the optical film layer. In actual work Among them, it is difficult for the filling glue in the groove to be closely connected with the optical film layer, and the filling glue is easy to overflow from the groove, which has an impact on the light guiding effect of the light guide plate, and more filling glue is left in the groove, causing waste , and it will also hinder the work of the light guide plate, which needs to be improved and optimized

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