Concerns about a possible glut of liquid crystal display (LCD) screens led glass and fiber optics maker Corning Inc. to widen the range of its first-quarter earnings forecast last month, Chairman and Chief Executive John Loose said recently. Loose, speaking to investors at a conference, reiterated company forecasts for the first quarter, including pro forma earnings of 28 cents to 31 cents per share, a range that Corning widened on January 24 from between 29 cents and 30 cents. At the time, Corning said some telecommunications companies might lower first-half orders in the face of tougher capital markets and added that some liquid crystal display customers could adjust inventories of monitors in the first quarter, given the current retail environment. At the conference, Loose said that concerns over a rising supply of LCD displays led to the range adjustment.