Method for raising light guide plate screen press run and permeability

Abstract

The invention provides a method for raising light guide plate screen press run and permeability. The method comprises the following steps that a, the design and production of a film negative comprises the following steps of designing the needed negative pattern firstly, symmetrically marking on the four corners of the periphery of the pattern for the counter point of a second exposure and creating a second draft pattern, remaining the same center line of the negative secondly, broadening 50 Mu m of each object line width of the pattern, creating a second draft pattern and producing two sets of films; b, coating and printing comprises the following steps of coating and exposing twice, using different natures of two photosensitive emulsions in the twice coating. Due to the fact that different natures of the two photosensitive emulsions are used in the coating, the print resistance and the permeability of the screen is improved greatly, production cost is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a manufacturing process of a precision light guide plate screen. Background technique [0002] The LED panel lights that are popular in the market today are favored by consumers. The LED panel light has a unique design. The light passes through the light guide plate with high light transmittance to form a uniform plane luminous effect. The uniformity of illumination is good, the light is soft, comfortable and bright, which can effectively relieve eye fatigue. The design principle of the light guide plate is derived from the LCD screen of the notebook computer, which can transform the line light source or point light source into a uniformly luminous surface light source. The light guide plate is made of optical-grade acrylic / PC sheet, and then high-tech materials with high reflectivity and non-absorbing light are used to print light-guiding points on the bottom of the optical-gr...

AI Technical Summary

Problems solved by technology

At the same time, in order to further pursue refinement, most manufacturers use stainless steel wire mesh for production. However, stainless steel mesh hinders the penetration of ultraviolet rays. In the case of ensuring the accuracy of the screen image and text, even if the peak value of the optimal exposure is used, the screen will still appear. The film on the squeegee surface of the plate is peeled off, and pinholes are easy to occur on the plate; if the exposure is increased one-sidedly, the phenomenon of jagged edges of graphics and text and loss of local dots will inevitably occur

Therefore, the traditional one-time coating and exposure plate-making process cannot fully meet the requirements of refinement, printing durability, solvent resistance, and leveling

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