Time-multiplexed stereoscopic display with a quantum dot-polymer scanning backlight

Xu, Bugong; Wu, Qin; Yucheng, Bao; Gangwei, Chen; Yuan-qin, Wang; Ren, Shuai

doi:10.1364/ao.58.004526

Cited by 13 publications

(6 citation statements)

References 22 publications

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“…In the meantime, TiO2 concentrations range from 0.035 to 0.12 g/cm 3 . Moreover, the refractive index of the added TiO2/silicone composite is proportional to the TiO2 concentration or volume fraction in the layer [29][30][31][32][33][34]. The composite layer in this article has a refractive index of around 1.799.…”

Section: Figure 1 Simulation Of Led Cob Packagingmentioning

confidence: 99%

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO₂/Silicone Packaging Coating

Hung

Lee

2022

J. Phys.: Conf. Ser.

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Since TiO2 nanoparticles and silicon composites include a strong scatter influence, they are well-known for improving scattered lighting in LED packets. To improve the optic quality of LEDs packaged with chip-on-board (COB), a thin layer made of high-concentration TiO2 and silicon glue is added to the primary packing layer. COB LEDs’ light extraction efficiency (LEE) rises up to 65% when the key encapsulation includes just silicone, according to the findings of experiments. As a coating of TiO2 and silicone is added, however, the increase in LEE is dependent on the TiO2 concentration. The LEE can be increased from 6% to 24% as the concentration of nanoparticles drops to 0.035 g/cm3. Furthermore, at a mean correlated color temperature (CCT) of around 8500 K, the TiO2/silicone compounds layer will assist in lowering the angular correlated color temperature (CCT) variance between 900 and 470 K within the -90° to 90° observing angle range.

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Section: Figure 1 Simulation Of Led Cob Packagingmentioning

confidence: 99%

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO₂/Silicone Packaging Coating

Hung

Lee

2022

J. Phys.: Conf. Ser.

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“…The control strategy of blue LEDs needs to be designed according to the parameters of the LCD panel. The relationship between the LCD panel and the SBLU is described in detail in our previous work [20]. As shown in Fig.…”

Section: B Corresponding Relation Between the Lcd Panel And The Scanmentioning

confidence: 99%

“…It is a primary factor that influences the image quality of 3D displays. The crosstalk of the stereoscopic display can be defined as follows [20], [21]:…”

Section: B the Evaluation Of Crosstalkmentioning

confidence: 99%

Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates

Wang

2019

IEEE Access

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A time-multiplexed stereoscopic display with a wide color gamut is fabricated and introduced in this paper. It comprises a scanning backlight unit (SBLU), a 120Hz liquid crystal display (LCD) panel and a pair of LCD shutter glasses equipped with two switching lens (Manufactured by NVIDIA, Model: 3D VISION 2). We use sectional light guide plates to compress the light angle. We use blue LEDs (Domain wavelength: 450nm) to replace the traditional phosphor white LEDs used in the backlight. The blue LEDs are fixed on the edges of the sectional light guide plates, and the quantum dot-polymer (QDP) film is placed on the surface of sectional plates. The SBLU and auxiliary glasses could work together with the LCD panel. All of these components can be controlled by the vertical synchronization signal transmitted from the graphics card. The color gamut of our prototype is improved. According to ITU-R Recommendation BT.2020 (Rec.2020), the color gamut is widely extended to 77.61%. The display's ability to express color has been improved by using quantum dot (QD) material. The display brightness through the switching lens is about 120 nit. The crosstalk decreases to about 0.9%. INDEX TERMS Time-multiplexed stereoscopic, color gamut, scanning backlight, crosstalk.

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“…Deviated color temperature hinder the color quality by inducing a yellow ring at the edge of discharged light that can only be addressed with structural reformation [7]- [9]. Although the optical qualities can be improved by using modified configurations suggested from research such as conformal coating structure [10], phosphor material adjustment [11], changing discharge surface [12], and structural modification [13], [14]. These suggestions are all capable of improving the color quality, however, complexity and high production cost prevents them from being widely used.…”

Section: Introductionmentioning

confidence: 99%

Enhancing light scattering effect of white LEDs with ZnO nanostructures

Thi

Loan

Ngoc

2021

IJECE

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Pc-LEDs, the lighting method that blends blue LED light with yellow light from phosphor to discharge white radiation, is one of the most advance known for high lumen output. However, pc-LEDs has inferior due to angular CCT deviation, which prevent pc-LEDs from reaching better performance. As a result, this research is conducted to address the need of pc-LEDs development by introducing a configuration doped with ZnO nanoparticles. The finite-difference time-domain (FDTD) method and the phosphor layer containing ZnO were applied in the experiments. The effect of ZnO-filled on the performance of color quality pc-LEDs is confirmed through calculated results. In particular, the uniformity of scattered light is improved with the presence of ZnO. In addition, ZnO particles also minimize the deviation of color temperature and enhance the color quality. Although there is a small decline in lumen output to achieve better color temperature uniformity, however, with suitable concentrations such as 0.25% N-ZnO, 0.25% S-ZnO, and 0. 75% R-ZnO, the decline is acceptable. The research on ZnO pc-LEDs demonstrates that this affordable and simple configuration can improve lighting properties and create other directions to enhance white light

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Time-multiplexed stereoscopic display with a quantum dot-polymer scanning backlight

Cited by 13 publications

References 22 publications

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO₂/Silicone Packaging Coating

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO₂/Silicone Packaging Coating

Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates

Enhancing light scattering effect of white LEDs with ZnO nanostructures

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Time-multiplexed stereoscopic display with a quantum dot-polymer scanning backlight

Cited by 13 publications

References 22 publications

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO2/Silicone Packaging Coating

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO2/Silicone Packaging Coating

Wide Color Gamut Time-Multiplexed Stereoscopic Display Based on Scanning Backlight Unit Utilizing Sectional Light Guide Plates

Enhancing light scattering effect of white LEDs with ZnO nanostructures

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Product

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Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO₂/Silicone Packaging Coating

Optical Efficiency Improvement of Chip-on-Board Design LEDs with TiO₂/Silicone Packaging Coating