Hitachi Displays has just announced a 4.5-inch IPS LCD panel that fits 1280 x 720 pixels within its frame, accounting for an eye-watering 329ppi density. That's higher than you can get on the ...

But 720p delivers 1280 x 720 pixels (which is 921,600 pixels in total). 720p is also sometimes referred to as high definition or HD; it's the lowest resolution that qualifies as HD.

1280 x 720 pixels (HD) / 640 x 480 / 320 x 240 pixels, 30 frames/sec. With monaural sound, with electronic image stabilization * Zoom function can be selectable optical zoom during movie recording.