Dispersion, useful for preparing film, which is useful e.g. in optoelectronics, and microelectronics, comprises indium tin oxide particles, alkyloxacarboxylic acid, a thermoplastic binder e.g. polyvinyl butyral, and solvent e.g. alcohols

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The patent describes a specialized dispersion containing indium tin oxide (ITO) nanoparticles, a dispersing agent, a thermoplastic binder, and a solvent. This dispersion is used to create thin, flexible, transparent, and electrically conductive films. These films can be manufactured by applying the dispersion to a base and then drying and detaching the film. The invention is particularly suited for applications requiring transparency and electrical conductivity, such as in optoelectronic and microelectronic devices.

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• Manufacture of touchscreens for smartphones and tablets
• Production of flexible displays and wearable electronic devices
• Creation of transparent conductive coatings for solar cells
• Development of lightweight and flexible electronic circuits
• Fabrication of antistatic coatings for sensitive electronic equipment

BenefitsContent extracted from patent full text and abstract with AI.

• Enables the production of thin, flexible, and transparent conductive films
• Improves processing ease due to the stable dispersion and film casting method
• Enhances film uniformity and performance with nano-sized ITO particles
• Compatible with a range of solvents and binders, allowing for versatile manufacturing
• Supports advanced electronics requiring flexibility and optical clarity

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Dispersion comprises: (a) 5-60 wt.% of indium tin oxide particles having an average particle diameter of less than 200 nm; (b) 0.1-5 wt.% of alkyloxacarboxylic acid as dispersing agent; (c) 1-20 wt.% of a thermoplastic binder; and (d) 30-90 wt.% solvent, where the sum of the components (a)-(d) is at least 98 wt.%. Independent claims are included for: (1) method for producing a flexible, transparent and electrically conductive film with a thickness of 1-50 mu m applied on a base, comprises applying the dispersion on the base by a film casting process under the formation of a film, drying the film and detaching from the base; and (2) the flexible, transparent and electrically conductive film with a thickness of 1-50 mu m applied on a base, obtained by the method.