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Manufacture method of bowl for manufacturing diffusing plate

A diffusion plate and roller technology, applied to the surface coating liquid device, metal material coating process, shaft and bearing, etc., to achieve the effect of reducing cooling speed, low heat transfer coefficient, and improving brightness

Active Publication Date: 2010-06-16
常州丰盛光电科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the conventional diffuser is that it only diffuses the light. If you want to change the light path, you need to add the corresponding optical film
However, the film is easily affected to produce optical defects, which reduces the pass rate of the backlight module, and the film is expensive, which increases the cost of the backlight module.

Method used

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  • Manufacture method of bowl for manufacturing diffusing plate
  • Manufacture method of bowl for manufacturing diffusing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The roller is composed of a metal roller and a cured polyurethane modified cyanate resin layer attached to the surface of the metal roller, and its preparation method is as follows:

[0036] 1. Mix cyanate resin, polyurethane and N,N-dimethylformamide in proportion to form a uniform solution. The proportion (weight ratio) is: cyanate resin is 40%, polyurethane is 10%, N , N-dimethylformamide was 50%.

[0037] 2. React the solution obtained in step 1 at 90° C. for 25 minutes to obtain a polyurethane-modified cyanate resin solution.

[0038] 3. Add dibutyltin dilaurate to the solution obtained in step 2, and its proportion (weight ratio) is 0.1% of the cyanate resin.

[0039] 4. Dip-coat the solution obtained in step 3 on the surface of the metal roller, and then dip-coat after N,N-dimethylformamide volatilizes and dries. Repeat dip-coating and volatilization and drying 3 times in total. A polyurethane-modified cyanate resin layer with a thickness of 0.1 mm was formed o...

Embodiment 2

[0043] Repeat the steps of Example 1, adjust the technical parameters therein, and the obtained results can also achieve the purpose of the present invention. The adjusted technical parameters are:

[0044] 1. Cyanate resin is 37.5%, polyurethane is 12.5%, and N,N-dimethylformamide is 50%.

[0045] 2. The solution obtained in step 1 was reacted at 70° C. for 60 minutes.

[0046] 3. The dibutyltin dilaurate proportioning (weight ratio) added in step 3 is 0.3% of the cyanate resin.

[0047] 4. In step 4, perform 6 times of dip coating and 6 times of volatilization and drying to form a polyurethane-modified cyanate resin layer with a thickness of 0.3 mm on the surface of the metal roller.

[0048] 5. React the polyurethane-modified cyanate resin layer on the roller surface obtained in step 4 at 120° C., 140° C., 160° C., and 170° C. for 2.5 hours to cure the polyurethane-modified cyanate ester resin layer.

[0049] 6, the surface layer-cured polyurethane modified cyanate ester...

Embodiment 3

[0051] Repeat the steps of Example 2, adjust the technical parameters therein, and the obtained result can also realize the object of the present invention. The adjusted technical parameters are:

[0052] 1. Cyanate resin is 42.5%, polyurethane is 7.5%, and N,N-dimethylformamide is 50%.

[0053] 2. The solution obtained in step 1 was reacted at 80° C. for 40 minutes.

[0054] 3. The dibutyltin dilaurate proportioning (weight ratio) added in step 3 is 0.2% of the cyanate resin.

[0055] 4. In step 4, perform 4 times of dip coating and 4 times of volatilization and drying to form a polyurethane modified cyanate resin layer with a thickness of 0.15mm on the surface of the metal roller.

[0056]5. React the polyurethane-modified cyanate ester resin layer on the surface of the roller obtained in step 4 at 120°C, 140°C, 160°C, and 170°C for 2 hours, and at 180°C for 1 hour to make the polyurethane-modified cyanate resin layer The ester resin layer is cured.

[0057] 6, the surfa...

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Abstract

The invention discloses a roll for manufacturing a diffuser plate, comprising a metal roller and a curable polyurethane-modified dicyanate resin layer; or a metal roller and a curable polyurethane-modified dicyanate resin / inorganic filler polymer blend layer; or a metal roller, a curable polyurethane-modified dicyanate resin layer, and a nickel layer or chromium layer. The invention further discloses the preparation methods of the rollers. The surface of the diffuser plate prepared by the roller of the invention shows minutely concave-convex optical structure, and can reflect and diffuse the incident light to the diffuser plate, change the path of light after being emitted into the diffuser plate, thus reducing optical loss and improving brightness. Simultaneously, the curable polyurethane-modified dicyanate resin layer on the surface of the roller has lower thermal-conductivity coefficient and can decrease the cooling speed of the sheet material of the metal roller during extrusion process of the sheet material. The roller of the invention can be used for manufacturing diffuser plates with low glossiness and surface with fine optical structure with a simple process at a low cost.

Description

technical field [0001] The invention relates to a preparation method of a roller for manufacturing a low-gloss fine optical structure surface diffusion plate. Background technique [0002] The diffusion plate is the main part of the LCD TV backlight module, and its function is to atomize the line light source into a surface light source and distribute the light evenly. The disadvantage of the conventional diffuser is that it only has the function of diffusing light. If you want to change the light path, you need to add a corresponding optical film. However, the film is easily affected to produce optical defects, which reduces the pass rate of the backlight module, and the film is expensive, which increases the cost of the backlight module. Contents of the invention [0003] Object of the invention: The object of the invention is to provide a method for preparing a roller for manufacturing a low-gloss fine optical structure surface diffuser plate. [0004] Technical sc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02F16C13/00C23C30/00B05D1/18B05D7/24
Inventor 吴龙平葛伟新李东吴石山沈健
Owner 常州丰盛光电科技股份有限公司