5.3: A New Cost‐Effective Optical Plate for High Performance LCD‐TVs

Ha, Juhwa; Paek, Jeongyeup; Jang, Taeseok; Choi, Jinsung; Jung, Youngsub

doi:10.1889/1.2785222

Cited by 8 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another approach is introducing a transparent plate or diffuser plate developed for improving uniformity [5,8,15,[17][18][19]. These techniques are useful for any type of backlight and are essentially independent of a light source.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design method for a thin uniform direct backlight using a diffuser plate with a pattern on the surface and optical films

2015

View full text Add to dashboard Cite

We researched a design method for improving uniformity of a thin direct backlight by using a diffuser plate with a pattern on the surface. It was found that the transmittance angle distribution (TAD) of the diffuser plate indicated the performance for uniformity and was an essential physical quantity for a backlight optical system with the diffuser plate. We clarified the relationship between the design parameters of the diffuser plate (the pattern and the mean free path of a ray in the diffuser plate) and the TAD of the diffuser plate by a simulation based on Mie theory and the experiments. The direct backlight, in which the distance between the diffuser plate and the lamps was less than 5 mm, was demonstrated. The illuminance uniformity of the diffuser plate was improved to 0.98 by the diffuser plate with a pattern that makes the TAD nearly constant distribution. Furthermore, the optical films on the diffuser plate were optimized, and the illuminance uniformity of the backlight achieved 0.99.

show abstract

Section: Introductionmentioning

confidence: 99%

“…A pattern on a transparent plate was proposed instead of a diffuser plate [19]. The pattern, the cross section of which was an elliptical lens pattern, was utilized for improving uniformity.…”

Section: Introductionmentioning

confidence: 99%

Design method for a thin uniform direct backlight using a diffuser plate with a pattern on the surface and optical films

2015

View full text Add to dashboard Cite

show abstract

“…Thus, in recent years, researchers have attempted to improve the performance of traditional diffusers by using lithographic techniques to pattern 3-D optical microstructures on the diffuser surface [13,14]. Meanwhile, other researchers have attempted to reduce the backlight thickness by means of multifunction optical films possessing both diffusion and brightness enhancement capabilities [15][16][17]. However, for slim-type backlight units, the literature contains very few proposals for enhanced performance optical films aimed specifically at large-screen LCD applications.…”

Section: Introductionmentioning

confidence: 99%

Optical film with microstructures array for slim-type backlight applications

Lin

Fang

Yang

2011

Optik

View full text Add to dashboard Cite

“…Recently, extensive efforts have been made for the development of new collimating films for better optical performances and/or hybrid films incorporating both the diffusing function and the collimating function [3][4][5]. However, it normally takes a long time of the order of at least a few months to design, fabricate, measure, feedback the experimental results, redesign and finalize the development of new optical films for backlight applications.…”

Section: Introductionmentioning

confidence: 99%

Study on the Simulation Model for the Optimization of Optical Structures of Edge-lit Backlight for LCD Applications

Ju¹,

Park²,

Lee³

et al. 2008

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

The optical performances of 15-inch edge-lit backlight were simulated by using a Monte Carlo ray-tracing technique. The backlight model was built by combining a wedge-type light guide plate, a diffuser sheet, a tubular fluorescent lamp with a lamp reflector, and two crossed prism sheets. Angular distributions of the luminance on each optical component obtained from simulation were consistent with those obtained from experiments on a real 15-inch backlight. The constructed backlight model was used to evaluate the optical performances of a micro-pyramid film. It was found that the on-axis luminance gain on the pyramid film is higher than that on one prism film but much lower than that on the two crossed prism films. These results suggest that a reliable simulation model can be used to develop new hybrid films and to optimize the optical structure of edge-lit backlight in order to reduce the developmental period.

show abstract

5.3: A New Cost‐Effective Optical Plate for High Performance LCD‐TVs

Cited by 8 publications

References 1 publication

Design method for a thin uniform direct backlight using a diffuser plate with a pattern on the surface and optical films

Design method for a thin uniform direct backlight using a diffuser plate with a pattern on the surface and optical films

Optical film with microstructures array for slim-type backlight applications

Study on the Simulation Model for the Optimization of Optical Structures of Edge-lit Backlight for LCD Applications

Contact Info

Product

Resources

About