發(fā)布時間：2019-05-14 17:33

【摘要】：背光模組是液晶顯示應(yīng)用中的關(guān)鍵器件,其主要作用是向液晶屏幕提供高亮度和高均勻性的面光源。典型背光模組由光源、雙層正交增亮膜、擴散膜、反射膜以及導(dǎo)光板五部分組成,存在結(jié)構(gòu)復(fù)雜、光能利用率低等問題。本實驗室前期所研制的一體化導(dǎo)光板,將增亮膜、反射膜以及擴散膜的功能集成于一體,實現(xiàn)結(jié)構(gòu)的最簡化。但由于一體化概念將反射膜也一并集成,超越了目前業(yè)界成熟的復(fù)制流程,不利于設(shè)計的產(chǎn)業(yè)化。因此,本文重點研究對象是集成化導(dǎo)光板,即將典型背光模組中的雙層正交增亮膜、擴散膜與導(dǎo)光板集成為一體,而反射膜分離,從而與產(chǎn)業(yè)界復(fù)制工藝流程保持一致。由于反射膜與集成化導(dǎo)光板之間存在著空氣層,由光波導(dǎo)理論可知,集成化導(dǎo)光板中的光線傳輸與一體化導(dǎo)光板中存在物理本質(zhì)上的差異,需要對高性能參數(shù)下的集成化導(dǎo)光板的結(jié)構(gòu)參數(shù)進行重新設(shè)計并分析相應(yīng)的規(guī)律�；趯嶒炇仪捌趯苫瘜�(dǎo)光板上表面半柱狀非球面陣列結(jié)構(gòu)以及下表面微棱鏡單元結(jié)構(gòu)參數(shù)的設(shè)計、優(yōu)化,本論文研究了小尺寸集成化導(dǎo)光板下表面微棱鏡排布規(guī)律,研制了一款五英寸集成化導(dǎo)光板金屬模板,并初步研究了激光雕刻技術(shù)用于集成化導(dǎo)光板的可行性。主要研究成果如下:(1)建立了小尺寸集成化導(dǎo)光板下表面微棱鏡的排布公式。對于不同尺寸(三至七寸)的集成化導(dǎo)光板,調(diào)整其下表面微棱鏡排布使亮度均勻性達85%以上,通過數(shù)值分析集成化導(dǎo)光板的寬度、長度對微棱鏡排布的影響,擬合出集成化導(dǎo)光板下表面微棱鏡排布公式以及該公式中的系數(shù)與導(dǎo)光板結(jié)構(gòu)參數(shù)的關(guān)系式。運用上述公式直接計算得出的微棱鏡排布方式,能夠使背光模組的亮度均勻性達到80%,提高了設(shè)計效率。(2)設(shè)計了一款五英寸集成化導(dǎo)光板并研制其金屬模板。對(1)中設(shè)計的五英寸集成化導(dǎo)光板進行結(jié)構(gòu)參數(shù)冗余度分析,同時根據(jù)加工條件對集成化導(dǎo)光板設(shè)計參數(shù)進行了修正,成功研制出一款五英寸集成化導(dǎo)光板金屬模板,以用于制作樣品。(3)探索了激光雕刻技術(shù)用于集成化導(dǎo)光板的可行性。將激光加工技術(shù)應(yīng)用于集成化導(dǎo)光板下表面微結(jié)構(gòu)的雕刻,對加工得到的微結(jié)構(gòu)參數(shù)進行了測試及模擬分析,并重新設(shè)計優(yōu)化了集成化導(dǎo)光板上表面的微聚光結(jié)構(gòu),建模仿真得到的亮度均勻性為73.24%,仿真結(jié)果表明該應(yīng)用具有可行性。
[Abstract]:Backlight module is the key device in liquid crystal display application, its main function is to provide high brightness and high uniformity surface light source to liquid crystal screen. The typical backlight module is composed of five parts: light source, double layer orthogonal brightening film, diffusion film, reflective film and light guide plate. There are some problems, such as complex structure and low utilization ratio of light energy. The integrated light guide plate developed in our laboratory integrates the functions of brightening film, reflective film and diffusion film to simplify the structure. However, because of the integration concept, the reflective film is also integrated, which goes beyond the mature replication process in the industry and is not conducive to the industrialization of design. Therefore, the focus of this paper is the integrated light guide plate, that is, the double layer orthogonal brightening film in the typical backlight module, the diffusion film and the light guide plate are integrated, and the reflection film is separated, which is consistent with the replication process of the industry. Because there is an air layer between the reflective film and the integrated light guide plate, it can be seen from the optical waveguide theory that there is a physical difference between the light transmission in the integrated light guide plate and the integrated light guide plate. It is necessary to redesign the structural parameters of the integrated light guide plate with high performance parameters and analyze the corresponding laws. Based on the design and optimization of the semi-cylindrical aspherical array structure on the upper surface of the integrated light guide plate and the structural parameters of the microprism element on the lower surface of the integrated light guide plate, the arrangement law of the micro prism on the lower surface of the small size integrated light guide plate is studied in this paper. A five-inch integrated light guide plate metal template is developed, and the feasibility of laser engraving technology for integrated light guide plate is studied. The main research results are as follows: (1) the arrangement formula of micro prism on the lower surface of small size integrated light guide plate is established. For the integrated light guide plate of different sizes (three to seven inches), the arrangement of the micro prism on the lower surface is adjusted to make the brightness uniformity reach more than 85%. The influence of the width and length of the integrated light guide plate on the arrangement of the micro prism is analyzed by numerical value. The arrangement formula of micro prism on the lower surface of the integrated light guide plate and the relationship between the coefficient in the formula and the structural parameters of the light guide plate are fitted. The arrangement of microprism calculated directly by using the above formula can make the brightness uniformity of backlight module reach 80% and improve the design efficiency. (2) A five-inch integrated light guide plate is designed and its metal template is developed. The redundancy of the structural parameters of the five-inch integrated light guide plate designed in (1) is analyzed, and the design parameters of the integrated light guide plate are modified according to the processing conditions, and a metal template of the five-inch integrated light guide plate is successfully developed. To make samples. (3) the feasibility of laser engraving technology for integrated light guide plate is explored. The laser processing technology is applied to the engraving of the microstructure of the lower surface of the integrated light guide plate. The microstructure parameters obtained are tested and simulated, and the microfocusing structure of the surface of the integrated light guide plate is redesigned and optimized. The brightness uniformity obtained by modeling and simulation is 73.24%. The simulation results show that the application is feasible.
【學(xué)位授予單位】：深圳大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN873.93

【參考文獻】

相關(guān)期刊論文 前9條

1 陳恩果;黃炳樂;徐勝;郭太良;;側(cè)入式導(dǎo)光板的激光微加工技術(shù)的驗證研究（英文）[J];光子學(xué)報;2015年11期

2 Haixuan Huang;Shuangchen Ruan;Tuo Yang;Ping Xu;;Novel Even Beam Splitters Based on Subwavelength Binary Simple Periodic Rectangular Structure[J];Nano-Micro Letters;2015年02期

3 陳穎聰;文尚勝;宋鵬程;;Design of a backlight module with a freeform surface by applying the Taguchi method[J];Chinese Optics Letters;2015年03期

4 陳祥賢;徐平;黃潔鋒;張旭琳;王冰;李貝貝;;導(dǎo)光板底面熔合微棱鏡出射亮度規(guī)律研究[J];光學(xué)學(xué)報;2009年09期

5 萬麗麗;徐平;陳祥賢;黃潔鋒;王愷;劉加勇;黃海漩;;手機導(dǎo)光板熔合微光學(xué)陣列研究[J];光子學(xué)報;2008年12期

6 陳祥賢;徐平;萬麗麗;黃潔鋒;王愷;劉加勇;;新型背光系統(tǒng)導(dǎo)光板技術(shù)[J];液晶與顯示;2007年05期

7 鄢澤林;徐平;萬麗麗;陳祥賢;黃海漩;楊俊波;;背光照明系統(tǒng)導(dǎo)光板[J];激光雜志;2006年03期

8 鄢澤林,徐平,萬麗麗,阮雙琛,黃海漩,陳祥賢,楊俊波;集成微光學(xué)導(dǎo)光板衍射分析[J];深圳大學(xué)學(xué)報;2005年03期

9 吳yN;PMMA導(dǎo)光板在家用音響產(chǎn)品顯示系統(tǒng)中的應(yīng)用[J];電子機械工程;2003年02期

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