Effect of photosensitivity in acrylic photoreactive electrode pastes on line width uniformity for large‐sized plasma display panels

Kim, Soon Hak; Kwon, Yong Hoon; Han, Yoon Soo; Hur, Youngjune; Kwak, Giseop; Woo, Chang Min; Hur, Byung‐Ki; Park, Lee Soon

doi:10.1002/app.27139

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…The general function of polymeric binders is the formation of optimized patterns in a paste, in which these patterns are formed by the development of UV‐unexposed areas with an alkali solution 14. Therefore, polymeric binders were prepared to investigate the effects of the molecular weights and acid values on the line resolution.…”

Section: Resultsmentioning

confidence: 99%

“…α,α′‐Azobisisobutyronitrile (Junsei Co., Kyoto, Japan), used as a free‐radical initiator, was reagent‐grade and was recrystallized from methanol before use. Methanol (TCI Co., Tokyo, Japan) for the polymerization was distilled in vacuo , and mercaptoacetic acid (Aldrich) was used as a chain‐transfer agent (CTA) for controlling the molecular weights of the polymeric binders 14. UV‐curable monomers such as pentaerythritol triacrylate (PETA), trimethylol propanetriacrylate (TMPTA), and trimethylolpropane ethoxytriacrylate (TMPEOTA) and a benzophenone derivative (HSP‐188), used as a photoinitiator, were obtained from SK‐CYTEC Co. (Ulsan, Korea) and used as received.…”

Section: Methodsmentioning

confidence: 99%

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Effects of the binder polymer and powder type on the resolution and edge curl of a silver electrode formed by a photolithographic process

Kim¹,

Han²,

Kwon³

et al. 2009

J of Applied Polymer Sci

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Silver (Ag) electrodes with a high resolution and a low edge curl dimension for plasma display panels were successfully fabricated through a photolithographic process using photosensitive Ag pastes with several polymeric binders. The gap and line resolutions of the photosensitive Ag pastes were examined as a function of the molecular weights and acid values of the acrylic binders with carboxylic acid groups. The effect on the formation of edge curls was also investigated with dry-and wet-processed Ag powders. Ag electrode patterns with a line resolution of 20 lm, a gap resolution of 40 lm, and an edge curl dimension of 0.8 lm could be achieved with the developing process in 34.5 s (break point Â 1.5) when the photosensitive Ag paste was prepared with the polymeric binder with a molecular weight of 23,320 g/ mol and an acid value of 94.98 mg of KOH/g of polymeric binder and with dry-processed Ag powder.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Effects of the binder polymer and powder type on the resolution and edge curl of a silver electrode formed by a photolithographic process

Kim¹,

Han²,

Kwon³

et al. 2009

J of Applied Polymer Sci

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Preparation and application of photosensitive copolymers for PDP barrier ribs formed by photolithography

et al. 2012

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Silver–Organic Complex in Photosensitive Silver Pastes for Enhanced Resolution and Aspect Ratio

Chen,

Liu,

Hsieh

et al. 2024

Langmuir

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Traditional screen printing is an easy approach commonly used for conductive pattern fabrication of electronics but lacks high resolution. Photolithography offers better resolution but is complex. Photosensitive silver pastes (PSP) combine the benefits of both but suffer from undercut issues, causing uneven etching, decreased interfacial adhesion, and thus poor resolutions. In this study, we explore the use of molecular precursors (i.e., silver oxalate) to replace metallic silver particles and enhance the depth of light penetration. Our findings demonstrate a successful solution to the undercut issue, achieving an undercut index of 1.0, indicating an undercut-free scenario and enabling higher resolutions in line and pattern formation. Additionally, our research confirms the feasibility of multilayer stacking of photosensitive pastes, achieving unprecedented aspect ratios in line patterns. By replacing 25% of micrometer silver powder with silver oxalate (PSP-25), we achieved optimal line widths as fine as 10 μm. The three-layer stack of PSP-25 reached a substantial aspect ratio with a height of 29.4 μm and an optimal fringe pattern resolution of 10 μm line width with a 15 μm aisle width. Utilization of silver oxalate was observed to slightly expand the line width, likely due to light scattering by the fine silver nanoparticles (∼40 nm) formed during the photodecomposition of silver oxalate.

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Effect of photosensitivity in acrylic photoreactive electrode pastes on line width uniformity for large‐sized plasma display panels

Cited by 4 publications

References 22 publications

Effects of the binder polymer and powder type on the resolution and edge curl of a silver electrode formed by a photolithographic process

Effects of the binder polymer and powder type on the resolution and edge curl of a silver electrode formed by a photolithographic process

Preparation and application of photosensitive copolymers for PDP barrier ribs formed by photolithography

Silver–Organic Complex in Photosensitive Silver Pastes for Enhanced Resolution and Aspect Ratio

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