Is TU690T edge lit or direct lit?

I'm curious to know, in relation to the TU690T model, could you clarify whether it is edge lit or direct lit? I'm considering purchasing this model and I'd like to understand the differences in terms of brightness, power consumption, and overall performance between the two lighting techniques. Additionally, are there any other notable features or advantages of the TU690T that you would recommend taking into consideration before making a decision?