[gnaffle]

Who had invented Trinitron before Sony?

Or are you saying that Sony copied the basic idea of a television, so that makes it impossible for them to have contributed any innovation to the space of TV sets? If you read the history, the invention of something like Trinitron required a lot of work, a lot of trial and failure to make the basic idea of a single-gun color TV feasible.

That work isn't about "polishing the turd called color television", that's called innovation.