25‐1: <i>Invited Paper</i>: Improvement of Viewing Angle and Color Gamut of Twisted Nematic Liquid Crystal Display using Inkjet‐printed Quantum Rod Color Pixel Converter

Hasegawa, Masaki; Hirayama, Yuki

doi:10.1002/sdtp.11610

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…However, the QYs in dry state drop to 26% for green and 8% for red, respectively because short interdot distance causes FRET and overall QY is reduced [4]. According to Hasegawa and Hirayama [9], about 4.0 um and 1.4 um of green and red QD films are required to absorb 90% of 450 nm pumping light. Based on the above QYs and absorption coefficients, the LCEs at those thicknesses are estimated to be 70% for green and 42% for red, respectively.…”

Section: Absorption and Light Conversion Properties Of Green And Red Qdsmentioning

confidence: 99%

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

Kang

Han

2019

Symp Digest of Tech Papers

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Section: Absorption and Light Conversion Properties Of Green And Red Qdsmentioning

confidence: 99%

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

Kang

Han

2019

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“…The 6×6 pixels LC cell is assembled by two different alignment layers, novel polyimide and LCP layer with uniformly dispersed NRs, thus fabricating a stable emissive display device, with high optical efficiency. This in-cell alignment layer gives many potential applications for liquid crystal displays, such as color converters, emissive displays [4], etc.…”

Section: Background and Objectivesmentioning

confidence: 99%

P‐124: Photo Emissive Nanorods Display

Zhang

Schneider

Srivastava

et al. 2018

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“…More details about the PLQYs can be found in Table S2 (Supporting Information). Based on the above demonstrations, it is evident that micrometer‐thick perovskite films could be a potential candidate as CCLs to replace currently used materials, such as: quantum dots (QDs), which exhibit equally outstanding optoelectronic performance, nevertheless, the synthesis of these QDs is somewhat complicated …”

mentioning

confidence: 99%

Vacuum‐Drying Processed Micrometer‐Thick Stable CsPbBr₃ Perovskite Films with Efficient Blue‐To‐Green Photoconversion

Yin

Ali

Liu

et al. 2019

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toward stability are yet needed since the lifetime of the reported devices is too short for consumer applications.Besides the application in LEDs, perovskite materials have also been adopted as downconverters in the backlight for liquid crystal displays (LCDs). [9][10][11] In 2016, Zhou et al. demonstrated stable green emissive films composed of MAPbBr 3 nanocrystals embedded polymer matrix through an in situ process. [10] Color gamut of 121% National Television Standards Committee was achieved by integrating these perovskite polymer composite films and red emissive phosphor with blue InGaN chips. In the same year, Wang et al. realized comparable results through swelling-deswelling microencapsulation strategy. [11] Both of the aforementioned films are proved to be ultrastable even in ambient atmosphere, which manifest considerate possibilities for their future commercialization. In 2018, Naijun et al. successfully applied perovskite films into an LCD prototype for the first time. [9] In backlight applications, the photonic energy conversion of short-wavelength light sources is generally incomplete, therefore, incorporation of color filters is inevitable. However, when it comes to the incorporation of suitable materials as color-conversion layers (CCLs) for visible blue light to achieve full color display, complete photoconversion should be enabled. Perovskite materials originally possess the potential to be utilized as CCLs for visible blue light due to their rather high photoluminescence quantum yields (PLQYs) and bright vivid colors. [12][13][14] Nevertheless, there is still no demonstration of perovskite materials for CCL applications. The pivotal requirement for CCLs is to realize complete energy conversion from short-wavelength light sources (such as: blue light). However, if the CCL is not thick enough, a portion of back light will remain unconverted thereby resulting in incomplete photoconversion. Currently, spin casting is the most widely adopted method to fabricate perovskite films while it is only suitable for nanometerthick films which are not adequately thick to be employed as CCLs. Therefore, a key challenge for perovskite materials to apply them as CCLs is to obtain films with higher thickness. Solvent annealing [15,16] or gas-solid [17] methods have been used to fabricate over one micrometer-thick perovskite films, however, they are still not sufficiently thick for efficient photoconversion. Metal halide perovskite materials have attracted great attention owing to their fascinating optoelectronic characteristics and low cost fabrication via facile solution processing. One of the potential applications of these materials is to employ them as color-conversion layers (CCLs) for visible blue lightto achieve full-color displays. However, obtaining thick perovskite films to realize complete color conversion is a key challenge. Here, the fabrication of micrometer-level thick CsPbBr 3 perovskite films is presented through a facile vacuum drying approach. An efficient green photoconversion is realized in a ...

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25‐1: Invited Paper: Improvement of Viewing Angle and Color Gamut of Twisted Nematic Liquid Crystal Display using Inkjet‐printed Quantum Rod Color Pixel Converter

Cited by 5 publications

References 15 publications

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

P‐124: Photo Emissive Nanorods Display

Vacuum‐Drying Processed Micrometer‐Thick Stable CsPbBr₃ Perovskite Films with Efficient Blue‐To‐Green Photoconversion

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25‐1: Invited Paper: Improvement of Viewing Angle and Color Gamut of Twisted Nematic Liquid Crystal Display using Inkjet‐printed Quantum Rod Color Pixel Converter

Cited by 5 publications

References 15 publications

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

P‐124: Photo Emissive Nanorods Display

Vacuum‐Drying Processed Micrometer‐Thick Stable CsPbBr3 Perovskite Films with Efficient Blue‐To‐Green Photoconversion

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Product

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Vacuum‐Drying Processed Micrometer‐Thick Stable CsPbBr₃ Perovskite Films with Efficient Blue‐To‐Green Photoconversion