P‐217: 120% Luminance Enhancement of OLED by Patterned Microlens Array

Ho, Yu‐Hsuan; Chen, Kuan‐Yu; Lin, Hoang‐Yan; Lee, Jiun‐Haw; Fang, Jheng-Hao; Wei, Mao‐Kuo

doi:10.1889/1.3069598

Cited by 2 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 With regard to display technology, a patterned MLA film attached to the bottom of an organic light-emitting diode (OLED) can enhance display luminance. 8,9 As flexible substrates are used for flexible displays, MLAs should be fabricated on flexible substrates.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Therefore, microlenses can be coupled with charge-coupled devices (CCDs) in digital photo cameras and three-dimensional (3D) image sensing and visualization. , Microlenses can also be applied to microfluidics, such as high-resolution bioimaging and sensing. − Patterned directly on fiber optics, the microlens can be applied as a pH sensor and used in fluorescence imaging systems . With regard to display technology, a patterned MLA film attached to the bottom of an organic light-emitting diode (OLED) can enhance display luminance. , As flexible substrates are used for flexible displays, MLAs should be fabricated on flexible substrates.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Drop-on-Demand Electrohydrodynamic Jet Printing of Microlens Array on Flexible Substrates

Prasetyo

Yudistira

et al. 2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

The inkjet-printing technique is regarded as an efficient method to fabricate microlens arrays used in digital cameras, medical endoscopes, displays, optical communication, and light source devices. The diameter, height, and aspect ratio of the microlens are the major contributors to these optical properties. Hence, the optical characteristics of the microlens array can vary with the type of inkjet-printing method. In this study, by employing electrohydrodynamic (EHD) jet printing with the drop-on-demand strategy, we fabricated microlenses and microlens arrays using a UV-curable photopolymer liquid on flexible poly(3,4-ethylenedioxythiophene):polystyrenesulfonate-coated poly(ethylene terephthalate). By controlling the number of printing drops, which is regarded as an efficient approach to control the dimension of the microlens, lenses with diameters of 11.9 ± 0.2 and 24.4 ± 0.5 μm and aspect ratio ranging from 0.22 to 0.33 were constructed. It was found that the focal length (15.44–26.79 μm), numerical aperture (0.39–0.46), and f-number (1.3–1.1) varied with the number of printing drops. The results demonstrate that the EHD-printed microlenses have a much shorter focal length, higher numerical aperture, and smaller f-number than the previously reported printed lenses. Hence, the EHD-printed microlens can be utilized to produce wide-angle-of-view applications and capture accurate images with insufficient light intensity. In addition, the proposed EHD-printing method may provide a cost-effective and simple route for manufacturing microlens arrays.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Drop-on-Demand Electrohydrodynamic Jet Printing of Microlens Array on Flexible Substrates

Prasetyo

Yudistira

et al. 2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…Several other reports about the increase in the light out-coupling efficiency of OLEDs using a microlens have been published thus far. [6][7][8][9][10][11][12][13][14][15][16][17][18] Moreover, the emission angle control of OLEDs using a lens was reported. 19) However, a collimated OLED light source using a microlens has not yet been reported.…”

Section: Introductionmentioning

confidence: 99%

Collimated Light Source Using Patterned Organic Light-Emitting Diodes and Microlens

Aratani

Adachi

Shimizu

et al. 2010

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

We developed for the first time a collimated organic light-emitting diode (OLED) light source using a patterned OLED and a microlens. The structure of the collimated OLED light source was designed by conventional ray-tracking simulation. We demonstrated that the collimated OLED light source enhanced the luminance of a liquid crystal display (LCD) with a low aperture ratio by a factor of more than two compared with a conventional OLED light source, which was not patterned. The collimated OLED light source with the patterned OLED and microlens is thus very effective for achieving a highly efficient LCD with OLED backlight. #

show abstract

P‐217: 120% Luminance Enhancement of OLED by Patterned Microlens Array

Cited by 2 publications

References 8 publications

Drop-on-Demand Electrohydrodynamic Jet Printing of Microlens Array on Flexible Substrates

Drop-on-Demand Electrohydrodynamic Jet Printing of Microlens Array on Flexible Substrates

Collimated Light Source Using Patterned Organic Light-Emitting Diodes and Microlens

Contact Info

Product

Resources

About