【摘要】：以紅、綠、藍(lán)三色混光而成的白光激光光源,具有色域覆蓋廣、色彩飽和度高、亮度高、能損低、壽命長等等優(yōu)點(diǎn),正在顯示技術(shù)中引領(lǐng)著新一輪革命——“full-color”顯示。作為顯示技術(shù)的終端,液晶顯示器具有體積小、重量輕、功耗低、輕便易攜帶等等優(yōu)點(diǎn),已經(jīng)取代陰極射線顯像管顯示器,成為當(dāng)今主流顯示器。近年來,在激光顯示領(lǐng)域,眾多科研工作者針對投影顯示技術(shù)做了大量工作,取得了輝煌的成果,然而,關(guān)于激光液晶顯示技術(shù)的研究還是很少。激光液晶顯示器,結(jié)合了激光顯示和液晶顯示的優(yōu)點(diǎn),不僅有重要的學(xué)術(shù)研究空間和價值,還有巨大的市場商用前景。本文針對液晶顯示器激光背光模組的一些關(guān)鍵技術(shù)開展了一系列研究,具體如下:1、針對激光光源模塊的研究。將紅、綠、藍(lán)三色激光經(jīng)光纖耦合混合輸出白光激光可應(yīng)用于液晶顯示器。由于普通光纖耦合模塊是光纖端面發(fā)光,每個模塊只能發(fā)射一束激光,每個顯示器需要多個發(fā)光點(diǎn),這就需要多個模塊,增加了系統(tǒng)復(fù)雜程度和成本。本文設(shè)計并研究了對光纖側(cè)面加工使光纖側(cè)面發(fā)光的方法,使一個光纖耦合模塊可具有多個發(fā)光點(diǎn)。模擬分析了對光纖側(cè)面加工的不同孔深、孔面積、孔幾何結(jié)構(gòu)等參數(shù)對出光光場的影響,得到了各個出光點(diǎn)對應(yīng)光場照度最大值在5%均齊度范圍內(nèi)的均齊光場。2、針對激光散斑抑制技術(shù)的研究。由于激光本身的干涉性,激光光源的散斑效應(yīng)會嚴(yán)重影響顯示質(zhì)量,解決這個問題,是使激光液晶顯示技術(shù)成熟與市場化的前提條件,具有十分重大的意義。本文針對半導(dǎo)體激光器作為背光源的液晶顯示器背光模組,應(yīng)用TN型E7液晶構(gòu)建了抑制散斑裝置,探索了頻率與電壓對散斑抑制效應(yīng)的影響,將散斑對比度由6.52%降到了2.80%,低于4%,無法被人眼察覺。
[Abstract]:White laser light source, which is composed of red, green and blue, has the advantages of wide color coverage, high color saturation, high brightness, low energy loss, long life and so on. It is leading a new revolution in display technology-"full-color" display. As the terminal of display technology, LCD has the advantages of small volume, light weight, low power consumption, portability and so on. It has replaced the CRT display and become the mainstream display. In recent years, in the field of laser display, many researchers have done a lot of work on projection display technology, and achieved brilliant results. However, the research on laser liquid crystal display technology is still few. Laser liquid crystal display (LCDs), which combines the advantages of laser display and liquid crystal display, not only has important academic research space and value, but also has a huge market prospect. In this paper, some key technologies of laser backlight module of liquid crystal display (LCD) are studied, as follows: 1, the research of laser light source module. The red, green and blue laser can be used in liquid crystal display. Because the optical fiber coupling module is optical fiber end luminous, each module can only emit one laser beam, each display needs more than one luminous point, which requires multiple modules, which increases the complexity and cost of the system. In this paper, we design and study the method of making optical fiber flank luminous, so that a fiber coupling module can have multiple luminescence points. The effects of different hole depth, hole area and hole geometry on the light field are simulated and analyzed. The homogenous light field corresponding to the maximum illuminance of each light point in the range of 5% homogeneity is obtained. Research on laser speckle suppression technology. Because of the interference of laser, the speckle effect of laser light source will seriously affect the quality of display. To solve this problem, it is the precondition to make laser liquid crystal display technology mature and market-oriented, which is of great significance. In this paper, a speckle suppression device based on TN E7 liquid crystal has been constructed for LCD backlight module with semiconductor laser as backlight source. The influence of frequency and voltage on speckle suppression effect has been explored. The speckle contrast was reduced from 6.52% to 2.80.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN873.93

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本文編號：2380590