The Pentax WG-30 has a better display than most cameras that were launched around the same time as it. This camera has a TFT display, whereas most cameras that have been around for around the same time as it have an LCD display. TFT LCDs provide better image quality and higher resolutions to earlier LCD displays but their limitations are narrow viewing angles and poor vislibility in direct sunlight.
A TFT display is in fact the best display amongst all cameras of a similar type and age to the WG-30.
An LCD display is the worst display across comparable types of camera.