STELLA NEWS SITE is managed by Stella Corporation Inc.

FPD/PCB NEWS`September 13


Mitsui Chemicals Tohcello decided on a production increase for a protective tape used in semiconductor manufacturing processes

Toshiba, the world-leader in development of perovskite photovoltaic modules for next-generation solar power generation, announced to develop a new coating method for the perovskite layer that boosts power conversion efficiency (PCE) to 15.1% for 703cm2 module, the highest for any large, polymer film-based perovskite photovoltaic module. The innovative coating method for perovskite layer also greatly reduces production time and costs, contributing to a lower cost for solar power generation.

The company previously developed a two-step coating process that first applied a layer of PbI2 (lead iodide) ink to a substrate, followed by a layer of MAI (methyammonium iodide, CH3NH3I) ink, triggering a reaction that formed an MAPbI3 layer. However, this multi-step approach had a low coating rate and often left unreacted sections in the perovskite layer. The alternative is a one-step process that applies MAPbI3 ink directly, but it is not easy to control crystallization of the MAPbI3 and obtain a uniform perovskite layer across a large area. A new coating method that solves these problems was required.

The company has developed a one-step meniscus coating method that uses improved ink, film drying processes and production equipment to form a uniform perovskite layer over an area as large as 703cm2. These innovations halve the steps for deposition of the perovskite layer, and raise the coating speed to 6 meters per minute on a 5~5 cm2 module, a rate that meets requirements for mass production.

The company previously reported 703cm2 polymer film-based perovskite photovoltaic modules, the one-step meniscus coating method achieves a PCE of 15.1%, the world's highest ever for a polymer film-based large-area perovskite photovoltaic module. This higher PCE and the faster, simplified production process, significantly advance progress toward the commercialization of highly efficient, low-cost, polymer film-based perovskite photovoltaic modules.

FPD/PCB NEWS`August 24


Sumitomo Chemical to Expand Production Capacity for High-Purity Chemicals for Semiconductors at its Ehime Works and in South Korea

Sumitomo Chemical announced to expand its production capacity for high-purity chemicals for semiconductors.

The Company will install new production lines to double the capacity for high-purity sulfuric acid at its Ehime Works (Niihama city, Ehime) and increase the capacity for high-purity ammonia water at the Iksan Plant of Dongwoo Fine-Chem, a wholly owned subsidiary in South Korea, by approximately 40%. The new production lines are due to commence operation in the first half of fiscal 2024 for Ehime Works, and the second half of fiscal 2023 for the Iksan Plant.

FPD/PCB NEWS`August 23


Sumitomo Chemical to Construct Chemical Recycling Pilot Facility for Acrylic Resin to Reduce Impact on the Environment

Sumitomo Chemical announced to construct a pilot facility for chemical recycling of acrylic resin (PMMA, poly-methyl-methacrylate) at its Ehime Works in Niihama City, Ehime Prefecture, Japan.

The new facility is scheduled to begin pilot tests in the fall of 2022 and to start providing samples in 2023. In parallel with this project, the Company will work to develop a recycling system for PMMA, from collection of used acrylic resin to recycling and reprocessing into products, aiming for early commercialization of chemically recycled PMMA.

FPD/PCB NEWS`July 8


JDI Signing of Term Sheet to Sell Subsidiary

Japan Display (JDI) announced its Board of Directors meetingto approve the signing of a term sheet between Wise Cap, a wholly owned subsidiary of Wistron Corporation, an EMS to whom JDI outsources module manufacturing, JDI Taiwan, a wholly owned subsidiary of JDI, and Kaohsiung Opto-Electronics, a wholly owned subsidiary of JDIT. The Term Sheet specifies that JDIT, Wise Cap, and KOE will hold discussions to finalize the sale of all KOEshares to Wise Cap(the "Share Sale").Wise Cap, JDIT, and KOE allsigned the Term Sheet today.

FPD/PCB NEWS`June 7


Showa Denko Materials transfers PCB Business

Sumitomo Chemical announced to build a new research facility at its Chiba site (Sodegaura City, Chiba, Japan), which will serve as iShowa Denko Materials announced on June 2, 2021, it entered into an agreement to transfer the printed wiring board business operated by Showa Denko Materials and its consolidated subsidiaries, namely, Showa Denko Materials Electronics (SDME), Yamagishi AIC (YGA), and Showa Denko Materials (Singapore)(SDMS), by Showa Denko Materials to PTCJ-S Holdings, a special purpose company set up by Polaris Capital Group (Polaris).

FPD/PCB NEWS`June 3


Sumitomo Chemical to Build New Research Facility in Chiba

Sumitomo Chemical announced to build a new research facility at its Chiba site (Sodegaura City, Chiba, Japan), which will serve as its center for the development of innovative materials and new technologies for reducing environmental impact. The facility is scheduled to come into operation in March 2024.

FPD/PCB NEWS`April 21


Daido Steel develop a sputtering target for blackening layer with excellent discoloration resistance

Daido Steel announced to develop the sputtering target "STARMESHTM-1" for blackening layer, which has low reflectance and excellent discoloration resistance for metal-mesh electrode-based touch panels. The company started selling in April.as a new line of the STARMESHTM series.

The blackening layer deposited by sputtering with STARMESHTM-1 can suppress the reflectance of the copper (Cu) conductive layer down to 10-20%. In addition, this blacking layer does not show any conduction change or color change in environmental tests (temperature 85, humidity 85%, 1000 hours) assuming electronic components for automobiles. Therefore, compared with conventional blackening layer of copper oxide (CuO), it can be used in harsh environments and the life of applicable products can be extended.

FPD/PCB NEWS`April 19


Nippon Shokubai provides soft string-type organic EL film into woven fabric

Nippon Shokubai announced to provide the iOLED film light source for the exhibition co-sponsored by ZOZO Technologies and Hosoo. The purpose of this exhibition is to present the results of joint research on fabrics that combine traditional crafts and advanced technology conducted by ZOZO, the University of Tokyo, the Interfaculty Initiative in Information Studies (III), Yasuaki Kakei Laboratory and Hosoo. As one of the exhibits, Nishijin brocade, woven with Nippon Shokubai's iOLED film light source will be exhibited.

The iOLED film light source has overcome the long-standing problem associated with organic EL, which is the degradation of the device due to oxygen and moisture in the air, through materials and device technology (iOLED technology) jointly developed by Nippon Shokubai and NHK. As a result, the company realized a highly flexible light source with a thickness of not more than 0.1 mm, which is thinner than paper.

This time, Nippon Shokubai and ZOZO jointly developed the structure and shape that can be woven into woven fabrics, and created a new thin string-shaped iOLED film light source. It is expected to be used not only for Nishijin brocade but also for various fabrics.

FPD/PCB NEWS`April 8


Mitsui Chemicals Tohcello decided on a production increase for a protective tape used in semiconductor manufacturing processes

Murata Manufacturing announced to complete a new production building, which had been under Mitsui Chemicals announced that its wholly owned subsidiary Mitsui Chemicals Tohcello has decided on a production increase for ICROS Tape, a protective tape used in semiconductor manufacturing processes.

This increase is set to go into effect at Taiwan Tohcello Functional Sheet (Kaohsiung;Taiwan Tohcello), which started up operations in January of last year. The expansion will more than double Mitsui Chemicals'Taiwanese production capacity for ICROS Tape.