58‐1: <i>Invited Paper:</i> High Resolution IPS‐LCDs Fabricated with Transparent Polyimide Substrates

Oka, Shinichiro; Hyodo, Yusuke; Jin, Lu; Yamaguchi, Yasunori; Asozu, Genki; Emi, Higano; Higano, Toshiyuki; Komura, Shinichi

doi:10.1002/sdtp.12356

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Thin‐film transistor liquid crystal display devices (TFT‐LCD) with high viewing angles and high display quality, such as in‐plane switching (IPS) and fringe field switching (FFS) types of TFT‐LCD have been becoming the dominant products in the market 1–3 . They have been widely used as the panels for portable mobile communication devices, such as mobile phones and tablets, due to the characteristics of fast response speed, wide viewing angles, and low power consumption.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of photo‐decomposable ester‐containing semi‐alicyclic polyimide alignment layers for potential applications in in‐plane switching thin‐film transistor liquid crystal display devices

Zhi

Wang²,

Jia³

et al. 2022

Polymers for Advanced Techs

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Poly(amic acid)s (PAAs) alignment agents have been prepared from the alicyclic dianhydrides, including 1,2,3,4‐cyclobutanetetracarboxylic dianhydride (CBDA, I), 1,3‐dimethyl‐1,2,3,4‐cyclobutanetetracarboxylic dianhydride (DMCBDA, II), and ester‐linked aromatic diamines, including 4‐aminophenyl‐4′‐aminobenzoate (APAB, a) and bis(4‐aminophenyl)terephthalate (BPTP, b), respectively. The derived PAAs, including PAA‐Ia (CBDA‐APAB), PAA‐Ib (CBDA‐BPTP), and PAA‐IIa (DMCBDA‐APAB) exhibited the preferable molecular weights, while the PAA‐IIb (DMCBDA‐BPTP) showed the low one due to the low polymerization reactivity both for the DMCBDA dianhydride and the BPTP diamine. All the PAA solutions except PAA‐IIb were adopted as the alignment components to fabricate liquid crystal (LC) minicells with a mode of in‐plane switching (IPS). The polyimides (PI) alignment layers derived from the thermal dehydration reaction of the PAA precursors at 230°C for 30 min showed good alignments effects to the LC molecules, which exhibited the pretilt angles (θp) from 0.09 to 0.15° after being exposed by the linear polarized ultraviolet light sources with the wavelength of 254 nm. In addition, the PI alignment layers afforded good optoelectronic features to the minicells, including the voltage holding ratio values over 97% at room temperature, and the residual direct circuit voltages lower than 1.0 V. The anchoring energy results indicated that the PI‐IIa (DMCBDA‐APAB) alignment layer showed the highest interaction with the LC molecules, and thus exhibited the highest threshold voltage (Vth) in the voltage‐transmittance (V‐T) measurements for the minicells.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of photo‐decomposable ester‐containing semi‐alicyclic polyimide alignment layers for potential applications in in‐plane switching thin‐film transistor liquid crystal display devices

Zhi

Wang²,

Jia³

et al. 2022

Polymers for Advanced Techs

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Ultra‐narrow border display with a cover glass using liquid crystal displays with a polyimide substrate

et al. 2020

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Plastic liquid crystal displays (LCDs) termed sheet LCDs with transparent polyimide (PI) substrates were constructed. There is a lot of potential to expand the use of these LCDs in LCD applications. Herein, we investigated a structure for sheet LCDs such as high-density main post spacers (PSs) and PI substrates with the aid of a barrier layer to control the residual stress and protect the liquid crystal from moisture.Drawing on this, we propose an ultra-narrow border LCD that makes of the developed sheet LCDs. The most significant improvement is that the four borders of the LCD can be folded to wrap the backlight unit. This LCD was based on various new techniques, including the use of plastic substrates, processing of polarizer films, control of the neutral surface of a bending component based on the sealant width, and the use of a cover glass with a lens effect. We believe that these novel LCDs will be useful in numerous new applications. K E Y W O R D S

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45‐2: Distinguished Paper: Ultra‐narrow Border Display with a Cover Glass Using LCDs with a Polyimide Substrate

Oka

Hyodo

Jin

et al. 2020

Symp Digest of Tech Papers

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We propose a novel plastic Liquid crystal display (LCD) with an ultra-narrow-border. As the most significant improvement, the four borders of the LCDs can be folded to wrap the backlight unit. This LCD was based on various new techniques, including the use of plastic substrates, processing of polarizer films, control of the neutral surface of a bending component based on the sealant width, and the use of a cover glass with a lens effect. We believe that these novel LCDs will be useful for numerous new applications.

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58‐1: Invited Paper: High Resolution IPS‐LCDs Fabricated with Transparent Polyimide Substrates

Cited by 5 publications

References 6 publications

Preparation and characterization of photo‐decomposable ester‐containing semi‐alicyclic polyimide alignment layers for potential applications in in‐plane switching thin‐film transistor liquid crystal display devices

Preparation and characterization of photo‐decomposable ester‐containing semi‐alicyclic polyimide alignment layers for potential applications in in‐plane switching thin‐film transistor liquid crystal display devices

Ultra‐narrow border display with a cover glass using liquid crystal displays with a polyimide substrate

45‐2: Distinguished Paper: Ultra‐narrow Border Display with a Cover Glass Using LCDs with a Polyimide Substrate

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