Study on the optical performance of light guide plate with pyramid-shaped microstructures

Wang, Pingping; Chang, Hong; Wang, Jin; Sun, Shufeng

doi:10.1016/j.ijleo.2021.168032

Cited by 4 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its uniformity was nearly 1.65 times that of the LGP without microstructures. The uniformity obtained by this result was better than the result in several references [ 13 , 23 , 27 , 31 , 46 ] and was slightly less than results of other references [ 14 , 21 , 24 , 37 , 45 ]. The authors made comparisons with previous results, and this study optimized the design of the microstructures of the LGP, the uniformity of which could be the most effective BLM application.…”

Section: Resultscontrasting

confidence: 72%

See 1 more Smart Citation

Optimized Micro-Pattern Design and Fabrication of a Light Guide Plate Using Micro-Injection Molding

et al. 2021

View full text Add to dashboard Cite

This study examined the uniformity of illuminance field distributions of light guide plates (LGPs). First, the authors designed microstructural patterns on the surface of an LGP. Then, a mold of the LGP with the optimal microstructural design was fabricated by a photolithography method. Micro-injection molding (μIM) was used to manufacture the molded LGPs. μIM technology can simultaneously manufacture large-sized wedge-shaped LGPs and micro-scale microstructures. Finally, illuminance values of the field distributions of the LGPs with various microstructures were obtained through optical field measurements. This study compared the illuminance field distributions of LGPs with various designs and structures, which included LGPs without and those with microstructure on the primary design and the optimal design. The average illuminance of the LGP with microstructures and the optimal design was roughly 196.1 cd/m2. Its average illuminance was 1.3 times that of the LGP without microstructures. This study also discusses illuminance field distributions of LGPs with microstructures that were influenced by various μIM process parameters. The mold temperature was found to be the most important processing parameter affecting the illuminance field distribution of molded LGPs fabricated by μIM. The molded LGP with microstructures and the optimal design had better uniformity than that with microstructures and the primary design and that without microstructures. The uniformity of the LGP with microstructures and the optimal design was roughly 86.4%. Its uniformity was nearly 1.65 times that of the LGP without microstructures. The optimized design and fabrication of LGPs with microstructure exhibited good uniformity of illuminance field distributions.

show abstract

Section: Resultscontrasting

confidence: 72%

“…The luminance uniformity of the K9 glass LGP was 90%, which was greater than that of the PMMA LGP. Wang et al [ 45 ] improved the optical performance of an LGP using pyramid-shaped microstructures on the LGP’s bottom surface. The average luminance and luminance uniformity of LGP were 2352.8 cd/m 2 and 92.4%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Optimized Micro-Pattern Design and Fabrication of a Light Guide Plate Using Micro-Injection Molding

et al. 2021

View full text Add to dashboard Cite

show abstract

“…For instance, microfluidic devices with micro to nanopattern structures had been used to maximize the sensitivity in detecting analytes [7][8][9]. On the other hands, micro lenses are utilized to enhance camera image quality [10] and light guide plate (LGP) also contain microstructure pattern on the surface of the material to distribute light evenly [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…The LGP is usually made of a clear polymer, such as polymethyl methacrylate (PMMA) [19,20], polycarbonate (PC) [21], polydimethylsiloxane (PDMS) [22] or optical glass [23]. It is designed with a series of microstructures patterns on its surface and these patterns serve to reflect and refract the light, causing it to bounce around the plate and disperse evenly across the display panel.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Norfazilasari Yasman,

Raja Murfiqah Raja Mohamad Fouzy,

Mohd Zairulnizam Mohd Zawawi

2024

ARAM

View full text Add to dashboard Cite

Light guide plates (LGPs) are an integral component that help distribute illumination from the light source in a variety of applications. Therefore, the design and quality of the microstructure pattern in LGPs play a significant role in achieving high luminous efficiency and light uniformity. This study investigates the relationship between laser power and laser scanning speed to the formation of micro-dots by using CO2 direct laser structuring on PMMA. Furthermore, the effect of different micro-dots pitch to the luminance was also evaluated using the luminance meter. Our finding shows that increase of laser power and decrease of laser scanning speed resulted in larger micro-dots diameter and deeper micro-dots. The results also showed that the smaller the pitch, the higher the luminance reading. Overall, the low-cost CO2 direct laser structuring demonstrated in the study able to produce consistent micro-dots pattern diameter and height which is suitable for fabrication of LGPs in the mass production.

show abstract

Design and optimization of a flexible fiber-conducted laser light guide plate system

Zhou,

Ji,

Liu

et al. 2024

Optik

View full text Add to dashboard Cite

Study on the optical performance of light guide plate with pyramid-shaped microstructures

Cited by 4 publications

References 30 publications

Optimized Micro-Pattern Design and Fabrication of a Light Guide Plate Using Micro-Injection Molding

Optimized Micro-Pattern Design and Fabrication of a Light Guide Plate Using Micro-Injection Molding

Fabrication of Polymer Light Guide Plate (LGP) using Direct CO2 Laser Structuring

Design and optimization of a flexible fiber-conducted laser light guide plate system

Contact Info

Product

Resources

About