I know this tread is old but, I discovered something quite unexpectedly that may be very interesting to some.
I decided to upgrade the old CRT TVs to flat panel LCD. At first I was going to use small inverters. After researching LCDs, I discovered the LEDs where MUCH lighter and thinner. So I opted for those. I ordered a 24" for the front and a 19" for the bedroom, both were Haier LED TVs
When the TVs arrived, I noticed the power cord had a 120VAC to 12VDC (3amp) converter built in. The plug into the TV was a simple 12VDC plug. So, I thought I was buying 2 120VAC TVs and they are really 12VDC.
I have to assume most/all LEDs (at least the small ones) are now 12V....perhaps even some of the LCDs. Something to check into when upgrading, depending on your power requirements. BTW, I bought 2 12V power cords from Radio Shack and hardwired them to a 12v circuit.