A common problem when using TVs as display device is that screen elements near the edge of the display are partially or totally hidden. This is due to a legacy television feature called overscan and is normal. The way to get around this is to create the UI with sufficient margins around the edge to avoid elements from falling into this space. The Freescale Android 10.3.1 patch release ( http://imxcommunity.org/xn/detail/4103961:BlogPost:38325 ) contains support for overscan.
If you would like to read more about overscan in general wikipedia has a good summary article (http://en.wikipedia.org/wiki/Overscan)