Design guidance of backlight optic for improvement of the brightness in the conventional edge-lit LCD backlight

Joo, Byung-Yun; Shin, Dongho

doi:10.1016/j.displa.2010.02.004

Cited by 25 publications

(13 citation statements)

References 3 publications

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“…The crude product was purified by flash silica gel column chromatography (R f : 0.23, hexane:ethyl acetate = 2:1, v/v), and 9.31 g (93%) of 2-NEUA was obtained. 1 …”

Section: Synthesis Of 2-neuamentioning

confidence: 97%

“…The crude product was purified by flash silica gel column chromatography (R f : 0.20, hexane:ethyl acetate = 3:1, v/v), and 9.89 g (99%) of 2-NEA was obtained. 1 The hydroxyl group (OH) on the side chains of 2-NEA was reacted with the -NCO group of TDI. DBTL (0.002 g, 0.0003 mmol) was added to the reaction mixture and the reaction was incubated at 75°C to complete the reaction.…”

Section: Synthesis Of 2-neuamentioning

confidence: 99%

“…After purification by flash silica gel column chromatography (R f : 0.20, hexane:ethyl acetate = 16:1, v/v), 4.62 g (92%) of 2-NGE was obtained. 1 Preparation of 2-NEA 2-NGE (7.35 g, 36 mmol), AA (2.65 g, 36 mmol), MEHQ (0.01 g, 0.08 mmol), and BTEAC (0.1 g, 0.37 mmol) were added all at once. The mixture was stirred at 60°C and the reaction temperature was increased gradually to 100°C.…”

Section: Synthesis Of 2-neuamentioning

confidence: 99%

“…To ensure brightness uniformity and high luminance, the BLU is composed of several kinds of optical materials, namely a light source, reflective sheet, light guide plate (LGP), diffuser sheet, prism sheet, and a mold frame as shown schematically in Fig. 1 [1][2][3][4][5][6][7][8][9][10][11]. Therefore, high refractive materials play an important role in determining LCD efficiency.…”

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confidence: 99%

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Preparation and properties of photocurable, high refractive, 2-naphthol epoxy-modified urethane acrylate

et al. 2011

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The back light unit (BLU) is a core component of liquid crystal displays (LCDs) that are used in notebook computers, mobile phones, navigation devices, flat screen TVs, and public information display (PID) devices, among many others. To enhance the optical efficiency of LCDs, optical films with a high refractive index have been used in the BLU. In particular, high refractive chemicals have been the subject of recent investigations to enhance the optical efficiency of BLUs. In this study, we efficiently synthesized photocurable, high refractive 2-naphthol epoxy-modified urethane acrylate (2-NEUA) from 2-naphthol via a three-step reaction. The refractive index of 2-NEUA was higher than that of 2-naphthol epoxy acrylate (2-NEA), presumably because it contains more integrated aromatic rings and therefore has a higher electron density than 2-NEA. Furthermore, we critically evaluated the effects of 2-NEUA on the mechanical properties of UV curable films in this article.

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“…The crude product was purified by flash silica gel column chromatography (R f : 0.23, hexane:ethyl acetate = 2:1, v/v), and 9.31 g (93%) of 2-NEUA was obtained. 1 …”

Section: Synthesis Of 2-neuamentioning

confidence: 97%

Section: Synthesis Of 2-neuamentioning

confidence: 99%

Section: Synthesis Of 2-neuamentioning

confidence: 99%

mentioning

confidence: 99%

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Preparation and properties of photocurable, high refractive, 2-naphthol epoxy-modified urethane acrylate

et al. 2011

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“…A back light unit (BLU), an essential module of TFT-LCD, consists of a light source [such as a cold cathode fluorescent lamp or light-emitting diodes (LEDs)], a light guide plate (LGP), and several optical sheets (e.g., reflector, diffuser, and prism sheets) [1][2][3][4][5][6][7][8][9][10]. Competitive technological development of prism sheets and related parts necessary for BLU has recently become a focus.…”

Section: Introductionmentioning

confidence: 99%

Improvement in the anti-abrasion behavior of a highly refractive optical sheet through the use of modified urethane acrylates

2016

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The back light unit (BLU) is the core component of LCDs for laptops, mobile phones, navigation, large televisions, and public information displays (PIDs). To enhance the optical efficiency of LCDs, optical films with a high reflective index have been used for BLUs. Highly reflective chemicals have been actively investigated to enhance the optical efficiency and mechanical property of BLUs. In this study, urethane acrylates were modified to improve the anti-abrasion behavior of highly refractive materials. Highly refractive modified urethane acrylate (MUA) was synthesized from o-phenylphenol (OPP), polyols, and diisocyanate. The refractive index of ester-based o-phenylphenol urethane acrylates (OPPUAs) was slightly greater than that of ether-based OPPUAs. The difference was due to the electron density increase induced by molecular interactions in the ester polyol, resulting in a higher refractive index. Additionally, urethane acrylate with carbonate polyol showed the highest viscosity. Based on the anti-abrasion test, the weight loss of MUAs with an alkyl group was less than that in OPPUAs with an aromatic group.

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Applications of Organic Light‐Emitting Transistors

Muccini¹,

Toffanin²

2016

Organic Light‐Emitting Transistors

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Design guidance of backlight optic for improvement of the brightness in the conventional edge-lit LCD backlight

Cited by 25 publications

References 3 publications

Preparation and properties of photocurable, high refractive, 2-naphthol epoxy-modified urethane acrylate

Preparation and properties of photocurable, high refractive, 2-naphthol epoxy-modified urethane acrylate

Improvement in the anti-abrasion behavior of a highly refractive optical sheet through the use of modified urethane acrylates

Applications of Organic Light‐Emitting Transistors

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