Hi,
once got a question for some flat panel specialists.
I have a RGB 4.3 " inch LCD display which is specified for:
- Resolution 480x272
- Pixel Clock Max. 15MHz
- Vertical frequency 60Hz
- [URL = 22] ETM043005DH6 [/ URL]
When I run this display now at a pixel dot clock of 17MHz (is working), which would in my case drive a vertical frequency of about 100Hz to follow, then any long-term damage to electronics and the display panel to be expected and if so, which ones and why?
The reason for the high Picelclock is the graphics chip set, this is specified for operation only higher than 20MHz.
A lot already to the point:
- A display with higher resolution is an alternative but unfortunately only one type on the market.
- The blanking time (Front and Back Porch) increase in order to reduce the vertical frequency is not possible at this display, then denied it all together.
- RGB signals on FPGA lead to divide the pixel clock before you get to the display means additional effort, might be an alternative.
I realize that a display outside the specification may have adverse effects but I would like to have even a few opinions to this issue.
Thank you for the attention
Heiko