scholarly journals Two-dimensional distribution expressions of micro-prism on bottom surface of partial integrated light guide plate

2019 ◽  
Vol 68 (21) ◽  
pp. 218501
Author(s):  
Xu-Lin Zhang ◽  
Wei Yang ◽  
Tong-Zheng Luo ◽  
Yan-Yan Huang ◽  
Lei Lei ◽  
...  
Keyword(s):  
Light Guide ◽  
Bottom Surface ◽  
Two Dimensional ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Dimensional Distribution

scholarly journals Two-dimensional distribution design of micro-prism for partial integrated light guide plate

2019 ◽  
Vol 68 (3) ◽  
pp. 038502
Author(s):  
Ping Xu ◽  
Wei Yang ◽  
Xu-Lin Zhang ◽  
Tong-Zheng Luo ◽  
Yan-Yan Huang
Keyword(s):  
Light Guide ◽  
Two Dimensional ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Dimensional Distribution

Research on Law of Luminance in Light Guide Plate with Fused Micro-Prisms on Bottom Surface

2009 ◽  
Vol 29 (9) ◽  
pp. 2516-2519 ◽  
Author(s):  
陈祥贤 Chen Xiangxian ◽  
徐平 Xu Ping ◽  
黄洁锋 Huang Jiefeng ◽  
张旭琳 Zhang Xulin ◽  
王冰 Wang Bing ◽  
...  
Keyword(s):  
Light Guide ◽  
Bottom Surface ◽  
Light Guide Plate ◽  
Guide Plate

Algorithm research on microstructure distribution on the bottom surface of an integrated micro-optical light guide plate

2014 ◽  
Vol 53 (7) ◽  
pp. 1322 ◽  
Author(s):  
Ping Xu ◽  
Yanyan Huang ◽  
Zhijie Su ◽  
Xulin Zhang
Keyword(s):  
Light Guide ◽  
Bottom Surface ◽  
Light Guide Plate ◽  
Guide Plate

Fabrication of Light Guide Plate on PDMS-Based Using MEMS Technique for Application of LED-Backlight

2007 ◽  
Vol 364-366 ◽  
pp. 7-12
Author(s):  
Chao Heng Chien ◽  
Zhi Peng Chen
Keyword(s):  
Light Guide ◽  
Recent Decade ◽  
Bottom Surface ◽  
White Led ◽  
Etching Technique ◽  
Silicon Mold ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Light Function ◽  
Led Backlight

Following the development of the thin-LCD, many researchers have improved the traditional backlighting module to make it thinner, lighter, and brighter which has already become the trend. The light guide plate is a very important component in backlighting module. Generally, the traditional light guide plate (LGP) is made of PMMA material. Injection molding technique is applied to fabricate the traditional LGP. In this research, Polydimethylsiloxane (PDMS) material was used to make the LGP, which was fabricated by using MEMS technique. In order to modify the traditional LGP, the micro prisms were constructed on the bottom surface of the PDMS LGP. Silicon mold was used to define the geometry of the micro-prism. Anisotropic etching technique was applied to fabricate the prism silicon mold. A liquid PDMS mixture was cast onto the prism silicon mold and the PDMS LGP was completed. White LED was utilized to be the light source of the PDMS LGP. After going through the illuminative test, PDMS LGP was demonstrated successfully of guide light function and its 77% of illuminative uniformity was achieved requirement of a general v-grooved light guide. The thickness of the PDMS LGP is easy to control and the PDMS is a heat-resistant and cheap material; therefore, the space and fabrication cost are saved. The field of MEMS has experienced rapid growth in the recent decade. In the future, the PDMS LGP can make displays thinner and brighter for thin-LCD applications.

scholarly journals A Light Guide Plate That Uses Asymmetric Intensity Distribution of Mini-LEDs for the Planar Illuminator

Crystals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 141 ◽  
Author(s):  
Zhi-Ting Ye ◽  
Yung-Min Pai ◽  
Cheng-Huan Chen ◽  
Hao-Chung Kuo ◽  
Lung-Chien Chen
Keyword(s):  
Intensity Distribution ◽  
Light Guide ◽  
Light Emitting Diode ◽  
Bottom Surface ◽  
Total Efficiency ◽  
Considerable Time ◽  
Light Emitting ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Diffusion Reflection

Traditional backlights are designed with new dot patterns, and then injection molding, laser beam fabrication, or UV (Ultraviolet) roll-to-plate imprinting is used to apply dot patterns to a light guide plate—the process consumes considerable time and resources. Therefore, we propose a novel light guide design that does not use a dot pattern. We designed an asymmetric intensity distribution of mini-LEDs (Light Emitting Diode) and a light guide plate with a fully printed diffusion reflection on the bottom surface for a planar illuminator. The design rules for the proposed architecture are described in this paper. The archetype design with a 152.4 mm circular down-light has a diameter of 143 mm for the planar light source module. The experiment achieved a total efficiency of 85% and uniformity of 92.6%.

scholarly journals 28.1: Invited Paper: Two‐dimensional local dimming by using multiple physical partitions of grooved and edge‐lit light guide plate

2021 ◽  
Vol 52 (S1) ◽  
pp. 177-178
Author(s):  
Ju Guo ◽  
Zongzhao Jiang ◽  
Fang Gao ◽  
EnGuo Chen ◽  
Sheng Xu ◽  
...  
Keyword(s):  
Light Guide ◽  
Two Dimensional ◽  
Light Guide Plate ◽  
Guide Plate ◽  
Local Dimming

scholarly journals Research of micro-prism distribution on the bottom surface of the small-size integrated light guide plate

2015 ◽  
Vol 23 (4) ◽  
pp. 4887 ◽  
Author(s):  
Ping Xu ◽  
Yanyan Huang ◽  
Zhijie Su ◽  
Xulin Zhang ◽  
Tongzheng Luo ◽  
...  
Keyword(s):  
Light Guide ◽  
Bottom Surface ◽  
Light Guide Plate ◽  
Guide Plate

Design of a Highly-Efficient Light Guide Plate for the Edge Lighting Backlight Module

2007 ◽  
Vol 364-366 ◽  
pp. 128-131 ◽  
Author(s):  
Paul C.P. Chao ◽  
Lun De Liao ◽  
Chi Wei Chiu ◽  
Chien Yu Shen
Keyword(s):  
Light Source ◽  
Light Guide ◽  
Incident Light ◽  
Bottom Surface ◽  
Optical Efficiency ◽  
Highly Efficient ◽  
Light Guide Plate ◽  
Guide Plate ◽  
High Uniformity ◽  
Optical Films

This study develops a highly-efficient light-guide plate for edge lighting backlight module that has no optical films. The light guide plate is designed to control the angle of the incident rays to the top surface from light source, to get the highest uniformity of intensity for thin edge lighting backlight system applications. The micro-prisms of pyramidal shape on the top surface can highly-efficient collimate with the light rays. Another micro-prism of v-cut shape on the bottom surface can reflect the incident light into the front direction and mixing the rays in the lightguide plate with the high uniformity. A novel design concept of the v-cut is the regular density varies of the cut in the LGP. The modeling simulation program, employing a Monte Carlo method based on TracePro software, has optimized the shape of the pyramidal micro-prisms on the top surface and the density distribution condition of the v-cut micro-prisms on the bottom surface, also the multiple scattering characteristics. The two types of the micro-prisms at the top and bottom surface can be highly recommended for the uniformity of the brightness via the optimal design process. Future work is warranted on improving the optical efficiency by using light-emitting diodes as a light source. The backlight module will allow us to increase the optical efficiency and to lower the total cost in portable LCD applications. The study confirms that a uniformity of brightness can be achieved without using any optical films, resulting in a high uniformity of 84%.

P-70: Light Shifted Light-guide Plate for Simple Multi-view Spatial/Temporal Hybrid Autostereoscopic Display

2016 ◽  
Vol 47 (1) ◽  
pp. 1399-1401 ◽  
Author(s):  
Gun-Wook Yoon ◽  
Seok-Won Bae ◽  
Hyun-Seung Cho ◽  
Jun-Bo Yoon
Keyword(s):  
Light Guide ◽  
Autostereoscopic Display ◽  
Light Guide Plate ◽  
Guide Plate
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