The (1920x1080) matches your screen's native output. Where to Find it
The search results indicate that is a firmware specification for LED/Smart TVs, specifically for the North Tech 40SMS Download P75 338 1920x1080 512M NORTH TECH 40SMS part4 rar
The matches (located on a sticker inside the TV on the back of the LCD panel). The (1920x1080) matches your screen's native output