Modelling the Lamination Process for Ruggedised Displays

Active matrix liquid crystal displays (AMLCD) need to be protected in severe environments. This is achieved through a ruggedisation process, where the display is laminated with cover glasses to become a more robust structure. The ruggedisation process can in itself cause stresses in the display and this can lead to delamination failures during the lamination process, during qualification testing or in-service. Controlling the magnitude of stress in a display during the lamination process is of course very important and this depends highly on the materials used. This paper discusses the use of finite element analysis to investigate the use of different materials in the lamination process and how such materials can affect the stress magnitude in the display.

Predicting the behaviour of micro-electronic displays using computational mechanics

Micro-electronic displays are indispensible devices used in high performance applications such as aerospace, medical, marine and industrial sectors.These devices provide an interface to real time mission critical devices and therefore require good optical visual performance and high reliability, all this within varied and challenging environments.

Thermo-mechanical analysis of the packaging process for micro-electronic displays

Micro-electronic displays are sensitive devices and its performance is easily affected by external environmental factors. To enable the display to perform in extreme conditions, the device must be structurally strengthened, the effects of this packaging process was investigated. A thermo-mechanical finite element analysis was used to discover potential problems in the packaging process and to improve the overall design of the device. The main concern from the analysis predicted that displacement of the borosilicate glass and the Y stress of the adhesive are important. Using this information a design which reduced the variation of displacement and kept the stress to a minimum was suggested

Factors that influence aggressive behaviour in acute care settings

Patients with critical illness or severe trauma may feel fear, anxiety and powerlessness, which can lead to aggressive behaviour. This article examines factors that contribute to patient aggression in acute care areas and identifies how these incidents can be minimised.