Low-power Implementation Solution Of Large-screen TFT-LCD Cell Phone

Currently as the development of the communications industry thephone’functions change from single voice communicate to images music andmultimedia. Compared with traditional mobile phones smart phones with itspowerful functions and convenient operation have become more and morepopular. But as smart phone become more powerful its power consumption isalso growing. Therefore, we must increase the use time and standby time ofsmart phones. One solution is to make the mobile phone battery with greatercapacity, but due to technical bottlenecks, there is no progress. Anothersolution is improving the system design of arge-screen smart phone withadvanced technology to reducing power loss. So as to extend the use time andstandby time of smart phones. In fact, low-power design has become a moreand more pressing issue of smart phone.Against the power consumption of smart phones this thesis design andimplement a method to reduce power consumption of large-screen TFT-LCDsmart phones and at first the thesis analyzes the display principle ofTFT-LCD then it analyzes the a variety of related technologies of the low-power TFT-LCD based on the phone’s overall design. Then on this basisfrom tow aspect of hardware and software the thesis achieves low-powerlarge-screen mobile phone method. In hardware it uses the ARM7processorand TFT-LCD driver chip ILI9481and in software based on the currentmainstream of the of the Android system it develops a software to reduceLCD power consumption this software shuts down unwanted softwareaccording to demand controls the brightness of the LCD display during thetime management and the external environment After testing the softwarecan effectively reduce the power consumption of mobile systems and extendthe use of mobile phones on a single charge time.