I've recently been trying to get a custom LCD (ET101005DSAK0) connected to an Embedded System on Module however without any success. When debugging why the LCD is not working I wanted to make use of the BIST (build in self test) PIN of the LCD.
However the datasheet of my LCD doesn't give any descriptions about what the BIST pin should output. I did some research by looking at the BIST output of other LCD's for example:
And eventhough this is similar to what my LCD is outputting it is not quite the same as can be seen in the GIF of my output below.
So in the GIF you can indeed see that the screen is displaying some sorts of RGB pattern. Which according to other datasheets is indeed a common pattern to display when doing these BIST tests. However I would've expected the screen to go from solid red, to green and finally blue. What I am seeing is that the colors for some reason are fading inwards. Also there seems to be this peculiar black stripe in the middle of the LCD. Since this is a Build In Self Test (No clock signals or any signals connected apart from the BIST pin and power) I expected to see the full screen to display solid colors.
Can anyone more practiced in these tests can give any clarity about what the expected outcome should be (E.G. solid colors or not) and can anyone clarify the black stripe through the middle. Or is it safe to assume that this LCD is not functioning properly.