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Method for preparing convex micro lens and method for manufacturing white light LED device

A micro-lens and convex technology, applied in the optical field, can solve the problems that the optical characteristics of the micro-lens cannot be well exerted, cannot achieve light emission, light conversion, filtering, and cannot obtain the aspect ratio, etc., and achieve unique optical performance and cost. low, good performance

Inactive Publication Date: 2021-07-02
ZHIJING NANOTECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Specific to the preparation method of the microlens structure, ultra-precision machining methods and complex photolithography methods are widely used at present. Most of them need to process molds first, and the cost is high and the efficiency is low.
The existing inkjet printing method is difficult to directly realize the convex microlens structure with high refractive index. The prepared microlens has a large size and cannot obtain an excellent aspect ratio, which leads to the inability of the optical characteristics of the microlens to be fully utilized. in application
[0004] In addition, the currently used microlenses are generally based on colorless and transparent media, which cannot achieve functions such as light emission, light conversion, and light filtering.
Moreover, there are still few related studies on the incorporation of functional materials, and most of them are based on dyes, and there are no reports based on quantum dot materials.

Method used

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  • Method for preparing convex micro lens and method for manufacturing white light LED device
  • Method for preparing convex micro lens and method for manufacturing white light LED device
  • Method for preparing convex micro lens and method for manufacturing white light LED device

Examples

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preparation example Construction

[0039] On the basis of the above method for preparing convex microlenses, the present invention also provides a method for preparing a microlens structure based on quantum dot materials. The quantum dot material is mixed into the ultraviolet light curing glue, and the microlens structure is directly printed on the specially treated substrate by inkjet printing to realize the fluorescent quantum dot microlens array, so that the quantum dot material and the microlens structure realize The one-step combination brings into play the excellent characteristics of quantum dot materials and the unique optical performance of the microlens structure. figure 2 The process flow chart of preparing the quantum dot material microlens structure is exemplarily shown. The method may mainly include the following steps.

[0040] Quantum dot solutions with high quantum yields and different wavelengths of light are synthesized by using relatively mature methods known in the art (such as microemuls...

example 1

[0053] Preparation of polymer glue: Dissolve 0.32g of PAN polymer powder in 1.4ml of DMF, and stir at room temperature for more than 3 hours using a magnetic stirrer to obtain a clear and transparent polymer glue.

[0054] The above polymer glue was spin-coated on a 2.5cm×2.5cm clean glass sheet at a speed of 1000 rpm using a homogenizer, and dried on a temperature controller at 80°C for 30min to obtain a polymer film with good flatness. And test the contact angle of the printed material on its surface.

[0055] Place the glass sheet treated with the polymer film on the MicroplotterⅡ (Sonoplot high-precision micro-nano material deposition inkjet printing system) printing platform, and print the UV-curable glue (Fanli 3217, Shenzhen Feili Electronic Commerce Co., Ltd.), Print a 5×5 microlens array with a preset pattern. Immediately after printing, use a 365nm hand-held UV lamp (1.3W, Trident, Ningbo Hongyi Electronics) to irradiate the printed area vertically for 30 seconds, an...

example 2

[0057] Preparation of polymer glue: Dissolve 0.25g of PVDF polymer powder in 1.4ml of DMF, and stir at room temperature for more than 3 hours with a magnetic stirrer to obtain a clear and transparent polymer glue.

[0058] The above polymer glue was spin-coated on a 2.5cm×2.5cm clean glass sheet at a speed of 1000 rpm using a homogenizer, and dried on a temperature controller at 80°C for 30min to obtain a polymer film with good flatness. And test the contact angle of the printed material on its surface.

[0059] Place the glass sheet treated with the polymer film on the MicroplotterⅡ (Sonoplot high-precision micro-nano material deposition inkjet printing system) printing platform, and print the UV-curable glue (Fanli 3217, Shenzhen Feili Electronic Commerce Co., Ltd.), Print a 5×5 microlens array with a preset pattern. Immediately after printing, use a 365nm hand-held UV lamp (1.3W, Trident, Ningbo Hongyi Electronics) to irradiate the printed area vertically for 30 seconds, an...

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Abstract

The invention relates to a method for preparing a convex micro lens and a method for manufacturing a white light LED device. The method for preparing the convex micro lens comprises the following steps: preparing a transparent polymer glue solution by adding a curing agent into a polymer solution; applying the polymer glue solution to a substrate to form a cured polymer film; ink-jet printing a material for preparing the micro-lens on the polymer film to form the micro-lens, and controlling the performance of the polymer film by selecting the proportion of the added curing agent according to the material for preparing the micro-lens so as to control the contact angle of the micro-lens on the polymer film.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a method for preparing a convex microlens and a method for manufacturing a white light LED device. Background technique [0002] As the most common structure in micro-optical components, micro-lenses have been widely studied and widely used in various products such as image sensors, infrared focal plane arrays, and OLEDs. Microlenses produced by various physical or chemical methods have many new features in terms of quality, structural design, production methods, etc., and can achieve many special functions that are difficult to achieve with traditional optical components, such as: optimized imaging, micro-integration And control the light intensity distribution, etc. [0003] Specific to the preparation method of the microlens structure, ultra-precision machining methods and complex photolithography methods are widely used at present. Most of them need to process molds first, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48H01L33/58H01L33/56
CPCH01L33/48H01L33/58H01L33/56
Inventor 李建军钟海政张萍萍赵跃进杨高岭
Owner ZHIJING NANOTECH CO LTD
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