22-11-2014, 09:42 PM
INTRODUCTION
Liquid crystal displays (LCD) are used through out the world in a variety of
applications. Portable electronic devices such as iPods ®, cellular phones and personal digital assistants all rely on LCD technology. LCD display failure can occur for several reasons. One of the reasons is the influence of environmental conditions on the LCD assembly conditions.Environmental effects include both temperature and humidity and cyclic loading. Another reason is the effect of processing conditions on the LCD display. Treatment may include bending, repetitive shock and drop a load failure conditions. Common seen in LCD displays lower contrast screen pixel is not functioning or display, and broken glass in the Assembly. Due to the large number of displays, used in portable electronic devices may be an important question: how long can survive before the LCD fails? Characterizing these shortcomings, in addition to providing information and techniques to help assess the life expectancy of LCD is an important issue that needs to be overcome two major types of displays exist; over the passive matrix LCD and a new, more widely used active matrix LCD (AMLCD). active matrix LCD uses several variants of liquid crystal technology and materials to the LCD have a range of possibilities.
Liquid crystal displays (LCD) are used through out the world in a variety of
applications. Portable electronic devices such as iPods ®, cellular phones and personal digital assistants all rely on LCD technology. LCD display failure can occur for several reasons. One of the reasons is the influence of environmental conditions on the LCD assembly conditions.Environmental effects include both temperature and humidity and cyclic loading. Another reason is the effect of processing conditions on the LCD display. Treatment may include bending, repetitive shock and drop a load failure conditions. Common seen in LCD displays lower contrast screen pixel is not functioning or display, and broken glass in the Assembly. Due to the large number of displays, used in portable electronic devices may be an important question: how long can survive before the LCD fails? Characterizing these shortcomings, in addition to providing information and techniques to help assess the life expectancy of LCD is an important issue that needs to be overcome two major types of displays exist; over the passive matrix LCD and a new, more widely used active matrix LCD (AMLCD). active matrix LCD uses several variants of liquid crystal technology and materials to the LCD have a range of possibilities.
