Articles techniques et présentations

One of the major challenges faced by the semiconductor industry is that electronic circuits produce a lot of heat energy during their operation. And with the current scenario where the gates are packed so much close together, then the problem of heat generation has become extremely significant. So we are working towards the efficient heat management and dissipation solution for the heat generated in electronic devices. We were working on Organic Display Devices. (Fig. 1) shows the top view of the display which consists of vertical aluminum and horizontal chromium stripes in different layers. The light emitting organic material is placed in the middle layer at the cross points of the lines thus acting as a pixel. The heat is generated primarily in the organic material. Also some amount of heat is generated in the metal stripes due to the movement of electrons or current through them but that is quite negligible. The whole setup had to be enclosed within a glass cavity, to prevent the oxidation of the organic material, which created more problems for use of air as cooling media. The proposed solution to the problem is adding oil in the cavity, which will help in convection transfer of the oil from the heat generating area due to fluid thermal interaction, hence helps in dissipating heat. Also metallic fins of high thermal conductivity were embedded in the glass which have a large surface area outside the cavity, and they help in the exchange of the heat from the fluid to the external surface.