LoL. Call me crazy, but I'm not so much surprised with bugs, but with presence of glass overlay on the LCD TV. Haven't seen this in awhile )))
On topic: no way to remove those buggers without a complete disassembly. If it gets very annoying, then you should probably take your TV to a repair workshop. The procedure itself is relatively easy, but requires patience and a few risky steps. You need to unclip the back cover, remove all logic boards, unscrew the LCD and carefully lift it off the front panel. Then, clean the screen with microfiber cloth, do the same for a glass panel, and then put it all back together. Or just wait for them to die of starvation and fall down off the LCD ))
Another thing that might or might not work, is luring them out. Just like most insects they are attracted to light. You can leave it off in a dark room, and stick a small LED flashlight on one of the rear vents. It's literally and figuratively a shot in the dark, but definitely safer than disassembling a TV on your own )))