replaced display not the same with original that came with phone

My HTC 816G phone is about one years old and I found the display broken inside my pocket with the touch not working. I approached a local mobile repairing shop n they say it'll cost Rs.2800 with the original one and so I trusted them n changed it. After 3 hours i went to take the phone and I was so sad to see the display as it's different with the original one that came with the phone. I regret that I hadn't went to HTC servicing centre. Are replaced display different from the original one that came with the phone?