Preface: Even if you do not have a definite answer, I would greatly like feedback from anyone who has even seen an LCD using this technology.
I recently took apart a Canon digital camera from the late 1990s and obtained an unusual LCD display. Unlike the standard chip-on-glass controller technology used on modern LCDs, this one appears to have the chip embedded in the glass.
Here is the camera in question, a Canon PowerShot S100 2MP Digital ELPH:
It appears to have first been sold on Amazon on September 4, 1999. I cannot find any other information about when it was released.
When I took the display out, I noticed that the metal bezel around the display was only about 4mm on each side, and the flat flexible cable attached directly to the glass with no room for the standard controller chip. The display appears to have been made by Sony, as seen at the top left of the bezel and on the back of the display.
I decided to remove the metal bezel, backlight, and filters and still could not find a controller chip. However, there was a black area around the display that appeared to be painted onto the top layer of the LCD, which made me curious as to what it was covering up. I decided to remove the top layer using the following procedure that has worked for me with other displays:
Remove the top and bottom polarizers from the display.
Score the center of the top of the display with a sharp tool parallel to the connector.
Put the display in a plastic bag to aid with cleanup.
Place a flat-head screwdriver over the center of the display parallel to the connector.
Hit the handle of the screwdriver with gradually increasing strength until the top layer shatters.
Remove the display from the bag and remove the shattered top layer.
Clean the display to remove small glass fragments and the gel-like substance between the 2 layers.
It worked and I was able to isolate the bottom layer. The controller integrated circuit appears to be embedded in the glass and distributed around the outside of the display. Here are some very close-up pictures:
I can not find any information about this technology on the internet, even just something saying that it exists. Does anyone here know what it is called, why it was used instead of chip-on-glass, when it was used, and if there is any information out there on it? Has anyone out there even seen this before?
Related question, if anyone knows why: Why do LCDs used in cameras have the pixels in a staggered arrangement (see my photos up close or look at a camera LCD yourself)?