This lecture introduces the concept of large area electronic materials, comparing microelectronics with macroelectronics, discussing the components of TFT displays, photocopiers, and thin film solar cells. It also covers the materials used in large area electronics, such as organic semiconductors, metal oxides, and emerging materials like OLEDs. The manufacturing processes for thin films are explained, including chemical and physical deposition methods. The scalability of LCD substrates and the global display market trends are also addressed, highlighting the importance of large area electronic materials in various industries.