48.3: Continuous Coating of Photo-Alignment Layer on a Flexible Color Filter for LCDs Using a Roll-to-Roll Manufacturing Process

Sonehara, Akio; Maruyama, Kei; Sugizaki, Atsushi; Eguchi, Toshimasa; Suzuki, Yasuyuki; Ito, Takeshi; Kumano, Atsushi; Takahashi, T

doi:10.1889/1.2433299

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…Recently, several schemes in which the substrate with the photoaligning material is moved while irradiated are suggested. Sonehara et al 33 realized roll-to-roll translation of flexible substrates under luminous flux. It allowed implementation of continuous manufacturing of optical films.…”

Section: Photoirradiation Proceduresmentioning

confidence: 99%

Photoalignment of liquid crystals: basics and current trends

2012

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Section: Photoirradiation Proceduresmentioning

confidence: 99%

Photoalignment of liquid crystals: basics and current trends

2012

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“…Optimization of light printer parameters (wavelength of exposure, photoaligning material and divergence angle of the beam) enabled us to reduce exposure energy from ≈ 1 J/cm 2 to (≈150 mJ/cm 2 ). These studies enabled us to use roll-to-roll technology for the production of full-color ORW e-paper devices (see Figure 7) [23,24]. A challenge for substrate transport is ensuring precise movement of the substrate.…”

Section: Resultsmentioning

confidence: 99%

Flexible Optically Rewritable Electronic Paper

Chigrinov,

Kudreyko,

Sun

2023

Crystals

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In this article, we present the procedure of preparation of flexible electronic paper with a photosensitive azo dye layer as the key element for changing the orientation of the polarization plane. The main steps of the technology for the fabrication of flexible e-paper are reported. The possible production of Digital Mirror Devices and the roll-to-roll process is discussed. Images on flexible e-paper are demonstrated, including bank card options. The advantages of optically rewritable e-paper technology in comparison with the e-ink usually used for this purpose are highlighted. Potential applications of flexible optically rewritable e-paper include price tags for supermarkets, indoor and outdoor advertisements, smart card labels, etc.

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“…We have previously reported roll-to-roll-based technologies for advanced LCDs, [23][24][25] including the use of a roll-to-roll process in (1) the manufacture of a bendable backlight system and (2) the continuous coating of a photoalignment layer on a flexible color filter. With the incorporation of the TFT-backplane rolls discussed in this article into these previously reported backlight and color-filter rolls, we have successfully demonstrated prototypes of a very thin, light LCD panel.…”

Section: Roll-to-roll Process For the Fabrication Of Tft-backplane Rollsmentioning

confidence: 99%

Development of rollable silicon thin‐film‐transistor backplanes utilizing a roll‐to‐roll continuous lamination process

et al. 2010

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Abstract— Rollable silicon thin‐film‐transistor (TFT) backplanes utilizing a roll‐to‐roll process have been developed. The roll‐to‐roll TFT‐backplane technology is characterized by a glass‐etching TFT transfer process and a roll‐to‐roll continuous lamination process. The transfer process includes high‐rate, uniform glass‐etching to transfer TFT arrays fabricated on a glass substrate to a flexible plastic film. In the roll‐to‐roll process, thinned TFT‐glass sheets (0.1 mm) and a base‐film roll are continuously laminated using a permanent adhesive. Choosing both an appropriate elastic modulus for the adhesive and an appropriate tension strength to be used in the process is the key to suppressing deformation of the TFT‐backplane rolls caused by thermal stress. TFT backplanes that can be wound, without any major physical damage such as cracking, on a roll whose core diameter is approximately 300 mm have been sucessfully obtained. Incorporating the TFT‐backplane rolls into other roll components, such as color‐filter rolls, will make it possible to produce TFT‐LCDs in a fully roll‐to‐roll manufacturing process.

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48.3: Continuous Coating of Photo-Alignment Layer on a Flexible Color Filter for LCDs Using a Roll-to-Roll Manufacturing Process

Abstract: We applied a photo‐alignment method to the color filter instead of a rubbing method to form an orientation layer continuously. We confirmed that the column spacers with the size of 5.5 μm in height and 20‐μm‐square did not affect both the coating and alignment process.

Cited by 6 publications

References 6 publications

Photoalignment of liquid crystals: basics and current trends

Photoalignment of liquid crystals: basics and current trends

Flexible Optically Rewritable Electronic Paper

Development of rollable silicon thin‐film‐transistor backplanes utilizing a roll‐to‐roll continuous lamination process

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