Our DT022CTFT uses the same LCD glass (240x320 resolution, same active area, etc.) but uses a specially slim designed backlight that fits in a 1U rack.

Is the driver IC ILI9341V built into the modules?
Yes, the ILI9341V is a COG IC connected to the display.

Is the backlight built into DT022BTFT and DT022CTFT?
Yes, the backlight is built into the display module. It is directly behind the LCD glass.