| 摘要 |
PURPOSE:To neutralize difference in brightness or wavelength of the light generated by light-emitting diodes by a method wherein the distance is made virtually same between driving IC element output electrodes and light-emitting diodes so that a virtually equal size of power may be applied to each of the light- emitting diodes. CONSTITUTION:Between a driving IC element 3 and light-emitting diodes 2 located on an insulating substrate 1, electrical wirings 4 are formed on the attached to the insulating substrate 1, electrically connecting the driving IC element 3 and the light-emitting diodes 2. The electrical wirings 4 are made of aluminum, copper, or the like, and formed on the attached to the insulating substrate 1 between the driving IC element 3 and the light-emitting diodes 2. The line formed of all the output electrodes 3a of the driving IC element 3 is arranged parallel to the line formed of the light-emitting diodes 2. With the distance between one output electrode 3a of the driving IC element 3 and one light-emitting diode 2 being equal to the distance between other electrodes 3a and diodes 2, the length of all the electrical wirings 4 is one and the same, which ensures a virtually equal electrical resistance for all the electrical wirings 4. |
