We have discussed these things with Nithin in email but let's add an update here too.
Nithin Prakash wrote:
I would like to know the driver IC name and sharp LCD part no that u are using is SPI043 board. Thank you
The driver IC is custom logic in a FPGA so it is not some part number for which you would find a datasheet from somewhere else. The use of FPGA gives the board the flexibility of being able to customize the interface and features based on what is needed for the application. The Sharp LCD part number that has been used for these prototypes is LQ043T3DX02 but it is possible to make boards that fit other displays also.
Nithin Prakash wrote:
But i also want to know whether do u have any other board interfaced with a 3.5 inch LCD.
There is no special 3.5" TFT board made at this time but for prototype needs a 3.5" TFT has been also attached using an adapter board. It can be seen in this picture:
http://www.flickr.com/photos/lcdinfo/3573464258/
A version of the SPI043 board customized for some specific 3.5" panel is something that could be discussed.