Accurate transmittance analysis of liquid crystal displays using a rational fraction approach in the time domain

Kang, Dong-Wan; Ahn, Hyeongjin; Kim, Heetae; Lee, Jong‐Kwon

doi:10.1016/j.optcom.2015.04.064

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…For example, APF polarizers on NB products can increase the transmittance by 40%, but the polarizers cost can increase by 50%, and thinning color filter thicknesses can affect key product specifications such as product color gamut and color coordinates. Therefore, the schemes of increasing transmittance without increasing product cost and affecting the product specification have received extensive attention and research [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

P‐3.14: Development of Thin Film Design based on IGZO‐TFT Displays for Transmittance and Picture Quality Improvement

Wang¹,

Ge²,

Wang³

et al. 2022

Symp Digest of Tech Papers

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In this work, the effects of array‐side thin film design on the transmittance and picture quality improvement were studied by optical simulation and experimental verification based on IGZO‐TFT displays. The results show that the maximum transmittance increase of array‐side and modular optics is about 10% through optimizing thin film thickness and refractive design based on light interference cancellation principle. As a result, the power consumption is reduced noticeably without any additional cost. Moreover, the transmittance at different wavelengths can also be modulated by adjusting thin film thickness and refractive design. By this way, higher picture quality panels with higher color gamut and lower blue light can be obtained by matching with color filter of suitable spectrums. This research results provides theoretical basis and experience reference for IGZO‐TFT displays quality improvement.

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Section: Introductionmentioning

confidence: 99%

P‐3.14: Development of Thin Film Design based on IGZO‐TFT Displays for Transmittance and Picture Quality Improvement

Wang¹,

Ge²,

Wang³

et al. 2022

Symp Digest of Tech Papers

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Analysis of light leakage between the adjacent pixels in a color-filter stacked white OLED display

Lee

Cho²,

Kang³

2016

Displays

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Efficiency enhancement in a backside illuminated 112 μm pixel CMOS image sensor via parabolic color filters

Lee¹,

Kim²,

Kang³

et al. 2016

Opt. Express

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The shrinkage of pixel size down to sub-2 μm in high-resolution CMOS image sensors (CISs) results in degraded efficiency and increased crosstalk. The backside illumination technology can increase the efficiency, but the crosstalk still remains an critical issue to improve the image quality of the CIS devices. In this paper, by adopting a parabolic color filter (P-CF), we demonstrate efficiency enhancement without any noticeable change in optical crosstalk of a backside illuminated 1.12 μm pixel CIS with deep-trench-isolation structure. To identify the observed results, we have investigated the effect of radius of curvature (r) of the P-CF on the efficiency and optical crosstalk of the CIS by performing an electromagnetic analysis. As the r of P-CF becomes equal to (or half) that of the microlens, the efficiencies of the B-, G-, and R-pixels increase by a factor of 14.1% (20.3%), 9.8% (15.3%), and 15.0% (15.7%) with respect to the flat CF cases without any noticeable crosstalk change. Also, as the incident angle increases up to 30°, the angular dependence of the efficiency and crosstalk significantly decreases by utilizing the P-CF in the CIS. Meanwhile, further reduction of r severely increases the optical crosstalk due to the increased diffraction effect, which has been confirmed with the simulated electric-field intensity distribution inside the devices.

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Accurate transmittance analysis of liquid crystal displays using a rational fraction approach in the time domain

Cited by 3 publications

References 24 publications

P‐3.14: Development of Thin Film Design based on IGZO‐TFT Displays for Transmittance and Picture Quality Improvement

P‐3.14: Development of Thin Film Design based on IGZO‐TFT Displays for Transmittance and Picture Quality Improvement

Analysis of light leakage between the adjacent pixels in a color-filter stacked white OLED display

Efficiency enhancement in a backside illuminated 112 μm pixel CMOS image sensor via parabolic color filters

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