[54] LIGHT EMITTING DISPLAY APPARATUS
[75] Inventors: Akira Ando; Mitsuji Sekine, both of Tokyo,Japan
[73] Assignee: Koha Co., Ltd., Tokyo, Japan
[21] Appl. No.: 779,202
[22] Filed: Jan. 6, 1997
[30] Foreign Application Priority Data
May 7, 1996 [JP] Japan 8-112748
May 7, 1996 [JP] Japan 8-112749
[51] Int. CI.6 F21V 5/00
[52] U.S. CI 362/244; 362/231; 362/251;
362/800; 313/500; 40/444
[58] Field of Search 40/444, 451, 452,
40/544, 581; 313/500, 501, 510; 362/230, 231, 234-237, 244, 251, 295, 800
[56] References Cited
U.S. PATENT DOCUMENTS
3,805,049 4/1974 Frank et al 40/581
3,816,739 6/1974 Stolov 40/581
3,875,456 4/1975 Kano et al 313/501
3,924,227 12/1975 Stolov 313/510
4,615,607 10/1986 Yanagawa et al 399/231
4,734,619 3/1988 Havel 313/510
4,810,937 3/1989 Havel 313/510
5,184,114 2/1993 Brown 345/83
5,410,345 4/1995 Eichenlaub 348/59
5,450,301 9/1995 Waltz et al 362/231
5,576,825 11/1996 Nakajima et al 356/71
5,724,062 3/1998 Hunter 345/102
Primary Examiner—Alan Cariaso
Attorney, Agent, or Firm—Helfgott & Karas, PC.
[57] ABSTRACT
A light emitting display apparatus has pixels arranged in rows to display a predetermined image, each of the pixels being composed of red and green, or blue and yellow light emitting diodes, lenses provided on the pixels, each of the lenses horizontally diffusing lights emitted from the red and green, or blue and yellow light emitting diodes, and vertically diverging the lights, a driver for driving the red and green, or blue and yellow light emitting diodes to be turned on in accordance with predetermined light intensities, thereby representing various colors including a white color. In the light emitting display apparatus, therefore, the displayed image is easy to be recognized, the number of the LEDs and the power consumption are decreased, and the density of pixels is increased. Further, the image information of the white color is displayed without the three original color light emitting diodes, that is, red, green and blue light emitting diodes, and the color of an image information is selectable from a variety of colors which include a white color.
11 Claims, 20 Drawing Sheets
