horizental line ( one line only)

my lcd has a problem

working well from 4 months

but before some days one horizental line shown on the top of display.

Picture shown very well with horizental line

but i want solution it.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0