The high resistance diaphragm for quantum dot film produced by DNP Printing Co., Ltd. in Japan is the key product of quantum display packaging technology. The preparation technology of high resistance diaphragm determines the performance characteristics of barrier film products. By analyzing the performance indexes of high resistance diaphragm products for quantum dot films, this paper summarizes the methods, principles, characteristics and applications of preparing flexible high resistance films by thermal evaporation, chemical vapor deposition and atomic layer deposition, and looks forward to the development prospect of barrier film products for quantum dot films.



At present, combined with the characteristics of organic / inorganic multilayer film formation, it is concluded that the improvement of the barrier performance of high resistance diaphragm is mainly achieved by vacuum coating technology. Electron beam evaporation technology has the fastest production rate, poor barrier performance and the lowest manufacturing cost. It is suitable for evaporation coating of aluminum and other metals. Magnetron sputtering technology can greatly improve the barrier performance, with high manufacturing cost, but it is not suitable for industrial promotion. Wound PECVD has high cost, fast production rate and excellent barrier performance, which is very suitable for industrial applications. Atomic layer deposition technology can use several layers of atomic level films to achieve excellent barrier performance, but the deposition rate is slow, and the roll to roll atomic layer deposition equipment is still in the research and development stage.



Quantum dot films can be used in TV, computer display, electronic blackboard, pad, vehicle display, mobile phone display and other fields. As a key component of quantum dot film, high resistance diaphragm products show a rapid growth trend with the market promotion and high-end display application of quantum dot film. High resistance diaphragm products for quantum dot film are the key products of quantum display packaging technology, and the preparation technology of high resistance diaphragm determines the performance characteristics of barrier film products.



According to the "Research Report on the current market development situation and industry prospect prediction of high barrier films for quantum dot films in China" released by market research network, quantum dot films can be applied to TV, computer display, electronic blackboard, pad, vehicle mounted display, mobile phone display and other fields. As a key component of quantum dot film, high barrier film products show a rapid growth trend with the market promotion and high-end display application of quantum dot film.