Replication and comparison of concave and convex microlens arrays of light guide plate for liquid crystal display in injection molding

2010 ◽  
Vol 50 (8) ◽  
pp. 1696-1704 ◽  
Author(s):  
Jong Sun Kim ◽  
Dong Sung Kim ◽  
Jeong Jin Kang ◽  
Jong Deok Kim ◽  
Chul Jin Hwang
Keyword(s):  
Liquid Crystal ◽  
Injection Molding ◽  
Light Guide ◽  
Liquid Crystal Display ◽  
Microlens Arrays ◽  
Light Guide Plate ◽  
Guide Plate

Simple liquid crystal display backlight unit comprising only a single-sheet micropatterned polydimethylsiloxane (PDMS) light-guide plate

2007 ◽  
Vol 32 (18) ◽  
pp. 2665 ◽  
Author(s):  
Joo-Hyung Lee ◽  
Hong-Seok Lee ◽  
Byung-Kee Lee ◽  
Won-Seok Choi ◽  
Hwan-Young Choi ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Guide ◽  
Liquid Crystal Display ◽  
Simple Liquid ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Single Sheet

scholarly journals Polarized light-guide plate for liquid crystal display

2005 ◽  
Vol 13 (21) ◽  
pp. 8349 ◽  
Author(s):  
Xingpeng Yang ◽  
Yingbai Yan ◽  
Guofan Jin
Keyword(s):  
Liquid Crystal ◽  
Light Guide ◽  
Liquid Crystal Display ◽  
Polarized Light ◽  
Light Guide Plate ◽  
Guide Plate

Edge-Lighting Light Guide Plate Based on Micro-Prism for Liquid Crystal Display

2009 ◽  
Vol 5 (9) ◽  
pp. 355-357 ◽  
Author(s):  
Jin-Ren Yan ◽  
Qiong-Hua Wang ◽  
Da-Hai Li ◽  
Jian-De Zhang
Keyword(s):  
Liquid Crystal ◽  
Light Guide ◽  
Liquid Crystal Display ◽  
Light Guide Plate ◽  
Guide Plate

scholarly journals Optical Design of Light Guide Plate Material for Slim Liquid Crystal Display

2014 ◽  
Vol 47 (5) ◽  
pp. 233-238 ◽  
Author(s):  
Taewon Gong ◽  
Gyu Jin Choi ◽  
Jin Hyuk Kwon ◽  
In Shik Park ◽  
Sunmook Lee ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Light Guide ◽  
Liquid Crystal Display ◽  
Optical Design ◽  
Plate Material ◽  
Light Guide Plate ◽  
Guide Plate

Simulation of Injection Molding of Ultra-Thin Light Guide Plate with Hemispherical Microstructures

2012 ◽  
Vol 503 ◽  
pp. 222-226 ◽  
Author(s):  
Peng Wei Dong ◽  
Zhong Li Zhao ◽  
Da Ming Wu ◽  
Ya Yun Zhang ◽  
Jian Zhuang
Keyword(s):  
Residual Stress ◽  
Injection Molding ◽  
Production Efficiency ◽  
Light Guide ◽  
Low Cost ◽  
Mold Temperature ◽  
Main Element ◽  
Melt Temperature ◽  
Light Guide Plate ◽  
Guide Plate

Micro injection molding is used widely owing to its high accuracy, high production efficiency, low cost and can fabricate products with complex structures. For optical components, the residual stress is a main element for quality. In this research, the light guide plate is used as the study object. The light guide plate was designed by software Pro-E, and was simulated by Moldflow for filling process. Orthogonal method was used in this research. The most important factor that affects residual stress level is mold temperature. The level of the different process parameters on residual stress are mold temperature, packing time, packing pressure and melt temperature.

A Design of Light Guide Plate for Direct Illumination of LargeSided Liquid Crystal Panel

2010 ◽  
Vol 30 (9) ◽  
pp. 2668-2673
Author(s):  
张鹤 Zhang He ◽  
朱钧 Zhu Jun ◽  
赵燕 Zhao Yan ◽  
谭峭峰 Tan Qiaofeng ◽  
金国藩 Jin Guofan
Keyword(s):  
Liquid Crystal ◽  
Light Guide ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Direct Illumination ◽  
Liquid Crystal Panel

Fabrication of High Performance Light Guide Plate and New Design for High Luminance

2010 ◽  
Author(s):  
Takaya Fujimoto ◽  
Kenji Yamashita ◽  
Satoshi Nishida ◽  
Daiji Noda ◽  
Tadashi Hattori
Keyword(s):  
High Performance ◽  
Light Guide ◽  
Liquid Crystal Display ◽  
Light Emitting Diode ◽  
High Luminance ◽  
Light Emitting ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Average Luminance ◽  
Point Light

Recently, LED (Light Emitting Diode) is paid to attention as a new source of light. However, it doesn’t turn to shine on a wide area efficiently because LED is a point light. Then, the method of the light guide plate technology used for the liquid crystal display etc, and use as the LED lighting is examined. A minute reflection dots exists bottom of the light guide plate, system is such that light comes out from the surface because the light that hits the dots break a total reflection condition. In our laboratory, the function of the diffusion seat and the condensing prism seat that is complete parts of the lighting panel was involved by optimizing shape and the arrangement of the dots, and it works on the research of the light guide plate where uniform luminescence is enabled. In the process of study, it has been understood that luminance increases by increasing the number of dots, too. Therefore, an accumulating method of piling up two or more light guide plates was proposed as a method of achieving high luminance for highly effective lighting usage, and the device was analyzed with an optical simulator. As a result of optimization, the average luminance has improved by 15%. We are starting to fabricate this high luminance light guide plate by accumulating method. If this piled light guide plate is completed and luminance is improved in accordance with the simulation, it will be possible to convert it to a higher luminance light guide plate.

Research on the Key Technology of Precision Injection Molding Equipment for Light Guide Plate

2009 ◽  
Vol 87-88 ◽  
pp. 306-310 ◽  
Author(s):  
Peng Cheng Xie ◽  
Gang Gou ◽  
Zhen Xing Wen ◽  
Yu Mei Ding ◽  
Wei Min Yang
Keyword(s):  
Corrosion Resistance ◽  
Injection Molding ◽  
Influencing Factors ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Light Guide ◽  
Surface Hardness ◽  
Tungsten Alloy ◽  
Light Guide Plate ◽  
Guide Plate

The light guide plate is an important element of the LCD backlight module which demands a certain degree of transparency and uniformity of gray. The defects such as black spots and yellow surface appeared when the light guide plate was processed by domestic equipments. The main problem was caused by the plasticization unit. The Influencing factors of performance for polycarbonate (PC) special screw were discussed in this paper. The conveyance capacity of melt in the metering zone of injection screws with different flight width and channel depth was analyzed by POLYFLOW software. In order to obtain high surface hardness, corrosion resistance and smoothness of PC special screw, surface coating processing was the key point for injection molding light guide plate. Moreover, the peel strength of PC with different coating processing metallic block was tested and measured. he experimental results of the analysis showed that the nickel-tungsten alloy plating and physical vapor deposition can significantly improve stripping properties, corrosion resistance and smoothness. The influencing factors of coating and PC materials’ stripping were analyzed. Through industrial testing, the defective rate of light guide plate had been greatly reduced with physical vapor deposition compared to the screw with hard chromium plating.

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