Abstract
The heat dissipation technique of LCD-TV is always a subject with continuous research and development needs. It is particularly important toimprove existing methods of heat dissipation and develop new techniquesin the face of improve electronic circuitry efficiencies. In this regard, theobjective of the present thesis is to investigate and discuss the appropriateanalysis of thermal problem in LCD-TV for the purpose of understandinghow and under what conditions heat dissipation occur, in order to achieveimprovements in current heat dissipation techniques, and to attain idealoperating temperature and internal systems heat control. We began our study by thermal experiments and used the FLOTHERM V6.1 simulation software to provide a basic internal LCD-TV systemthermal analysis. Results of experiments and simulations were used toanalyze current and systems heat flows, which served as the basis for ourrecommendations to improve existing heat dissipation techniques. Making comparisons between the experiments and simulations analysis, we have arrived at the following conclusions and recommendations. (1) The heat disipation under the environment of the natural convection, radiation is an very important parameter that can not be neglected. (2) The proper increase the size of open ratio appropriately, could obvious improve the heat dissipation of the system. (3) Only increase the emissivity of heat-sink can improve the temperature of the chip on the main-board effectively. (4) There is very great improvement to the heat dissipation of the system to put the heat source in the appropriate position.