The Key Technology Study On Glass Sticking And Peeling For LCD Vacuum Aligner

TFT-LCD(Thin Film Transistor Liquid Crystal Display) is one of the flat panel display technique, the performance of TFT-LCD equipment decides the manufacturing level of TFT-LCD panels. AVIC decided to transform its production to small size LCD panels, a part of equipment can not meet with the technological process for small size LCD panels, the vacuum alignment equipment has high risk of panel light-leaking and LCD bubbles for panel production. This paper researches the technological process of the vacuum alignment equipment and the technique of glass sticking and peeling under vacuum conditions, the content is listed in the following:Production defect analysis and vacuum alignment process establishing. This paper analyzes the vacuum alignment equipment structure and process principle, put forward the process parameter characterization of glass alignment precision, analyzes the reasons of LCD panels light-leaking and LCD bubbles, establishes a new process model, finds the improved design scheme of vacuum alignment equipment, and analyzes its feasibility.The design of glass sticking and peeling unit and reliability compliance, The design of the new sticky rubber sticking unit and high air pressure diaphragm peeling unit, though experiment test it is reliable, through production test it is that the new glass sticking and peeling unit will not cause LCD panels defects. The Design of the chuck and electrical system, The design of SDC(Stick Diaphragm Chuck) glass sticking and peeling chuck and electrical system, the requirement of glass sticking and peeling action. The design of control program and man-machine interface, The design of control program and touch panel man-machine interface, make the process sequence of the vacuum alignment equipment meet the requirements of new process model.General assembly and equipment performance testing, Assemble the vacuum alignment equipment and debug the system, through production test verifies the validity of the vacuum alignment equipment improvement and the new process model.