Educated guesses on LCD panels architecture...

Thread Starter

Externet

Joined Nov 29, 2005
2,223
Hi.
A TV shows a image with these symtoms :


After a while, (warm up?) problem fades away. But not always.
Reading everywhere, there is lots of guessing, and seems to be a common failure.

Is there a site that explains (the construction architecture) what connections to the panel 'drive' which areas of the screen ?

Larger, smaller panels have more or less flexible foil 'bonded' connections to the panel.
By the number of these, and the number of failing sections, is there an educated rationale on where to look for the problem ?

I mean, as in the picture, if the lower third is wrong, there should be two other connectors driving the rest of the panel fine. So there has to be three connectors handling horizontal sections.
If the panel is also driven in left and right halves, like :



I suppose there is two connectors to the panel handling vertical sections.

Seems logic to believe 3H times 2V; the LCD panel uses six foil connectors. Or 3H and 2V = 5 foil connectors ?

How wrong/right is that rationale ? Any site explaining it where I can lean, please ?
 
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