BROOKINGS, S.D. — The seemingly endless prairie that blankets this part of the United States would seem to be an unlikely place for one of the largest makers of sports video displays, Daktronics. After all, the nearest big-league ballpark is a four-hour drive from this town, which has barely enough residents to fill any of the arenas and stadiums where the high-tech screens are fixtures.

Yet in the nearly half-century since its founding, the company has become a global giant in sports entertainment, and though the quiet, tree-lined streets may not show it, business is good.

Revenue grew by a healthy 6.5 percent last year, largely because of demand from the N.F.L. For months, hundreds of the 1,600 workers in the sprawling Daktronics complex off the interstate that runs between Omaha and Fargo, N.D., have been building gigantic video displays for N.F.L. teams in cities like Charlotte, N.C.; Cleveland; and Jacksonville, Fla., where two screens the length of a football field were installed behind the end zones and will be unveiled this week. Smaller screens will end up in the baseball, basketball and hockey homes of professional and college teams.

The new orders are a result of a paradox: As teams reap billions of dollars from television networks that carry their games in increasingly vivid detail, fans are finding more reasons to stay home, especially as the costs of tickets, parking and food escalate.