Composite light guide plate and production method thereof

Abstract

Provided is a composite light guide plate. The composite light guide plate comprises a transparent substrate (1), a light leading-out film (2) is attached on the substrate (1), and the bottom face of the light leading-out film (2) is a combined face of a convex face (3) and a concave face and is the attached face with the substrate. A natural transitional face of the convex face and the concave face is of an inclined face or an arc-shaped face and serves as reflection faces (5, 6) of light. The width or the diameter of the convex face is a, a=0.005-0.5mm, surface roughness R of the convex face and the transitional face is smaller than 0.05, the height h of the reflection face is 0.65-2.5 times of the width or the diameter a of the convex face, and the included angle between tangent plane of any point on the reflection face and the top face of the substrate is 30 degrees-80degrees. The light guide plate is applied to lighting or luminous displaying, and the production of the light guide plate includes six steps: choosing substrate material; making the substrate; choosing the light leading-out material; making a mold; and making and attaching the light leading-out film. Compared with the prior art, the composite light guide plate has the advantages of being high in lighting effect, and controllable in radiance and uniformity, and possessing a self-protection interface structure and the like.

Description

Technical field [0001] The invention relates to an optical material and a production method thereof, in particular to a composite light guide plate which is applied to lighting or luminous display equipment and can convert a line light source and a point light source into a surface light source and a production method thereof. Background technique [0002] CN102565923 discloses a "composite light guide plate" in which a transparent film is attached under a transparent substrate, and light guide points are printed on the lower or upper surface of the transparent film. The defect of the composite light guide plate is: printed light guide points The light effect of the reflective ink or astigmatism ink is not high, and light is emitted on both sides, and a reflective plate needs to be added on one side, which affects the light efficiency and increases the cost, and it is impossible to manufacture a large-size light guide plate. [0003] CN101216573 discloses that "a composite light gu...

AI Technical Summary

Problems solved by technology

[0002] CN102565923 discloses a "composite light guide plate", in which a transparent film is attached under the transparent substrate, and light guide points are printed on the lower or upper surface of the transparent film. The defect of the composite light guide plate is that the printed light guide points Reflective inks or astigmatism inks have low light efficiency, and light is emitted from both sides, so a reflector needs to be added on one side, which affects light efficiency and increases costs, making it impossible to manufacture large-sized light guide plates

[0004] One is to emit light from both sides, and a reflector needs to be added to one side, which will affect the light effect and increase the cost

Second, the outgoing light is diffused in a large angle range, and it is difficult to control the angle of the outgoing light

The third is that its light guide points are distributed on the outer surface of the flexible light guide film composite light guide plate, which is easy to accumulate dust and is not easy to remove, which affects the light intensity. The exposed light guide point structure is easy to be damaged and scratched, which affects the use effect and service life

The fourth is that the full shot lengthens the transmission distance of light in the board and increases the light loss

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