Thanks Philip for the reply.
1080i or 720p etc are resolution of video signals and a bulb in TV has nothing to do with it, in fact it is matter of video processor and supporting circuitry utilized in TV, bulb is just a backlight source in TV to project the image/ picture generated in light engine/ optical block of TV to front screen of TV.
1080i video resolution works on Component Video input of a TV and HDMI
input is ideal to get even higher video resolution that is 1080p along with 1080i or 720p, your Toshiba TV is capable to present 1080i resolution picture with same bulb if connect video source into HDMI input of TV, please check following link to view TV specs..
I trust my input will help you out. Please feel free to respond if you have any additional questions.
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