| 摘要 |
PURPOSE:To prevent the dispersion of the luminous luminance, which is generated from light-emitting diodes, and the luminous wavelength and to obtain high- quality printings and prints by forming common electrodes, whereon plural pieces of the light-emitting diodes are linearly arranged, by a film thickness technique. CONSTITUTION:Common electrodes 2 are formed by adhesion on the surface of a substrate 1. Light-emitting diodes LED 3 are linearly bonded on the upper parts of the common electrodes 2 and the common electrodes 2 act as the electrodes on one side of electrodes for impressing power on the LEDs 3. Moreover, ICs 4 for drive are mounted on both sides of the LEDs 3 in parallel to the arrangement of the LEDs 3, each output terminal 4a is connected to the LEDs 3 with bonding wires 5. According to such a way, the electric resistance of the common electrodes can be made smaller, and at the same time, the dispersion of the luminous luminance and the luminous wavelength can be prevented because the heat to be generated from the LEDs can be absorbed by the common electrodes and high-quality printings and prints can be obtained. |
