| 摘要 |
PURPOSE:To suppress dispertion of light and improve the light emitting efficiency by laminating LED elements and making the LED elements have positive and negative electrodes at the same side face. CONSTITUTION:At the tip of an anode lead members 10, a leveled face 11 and a reflected part 12 are formed in a body, One of the electrode parts of an LED is placed on the leveled face 11 and the reflected part 12 has a dike-shaped frame and surrounds about half of the LED in the vicinity of the side circumference face of its LED to be put by the electrodes. Even at the tip of a cathode lead members, the leveled face 21 and the reflected part 22 are formed in a body. The other electrode part of the LED is placed on the leveled face 21 and the reflected part 22 has the dike-shaped frame composing a remained other half of the LED and together with the reflected part 12 surrounds full circumferences of the side circumference face of its LED in the vicinity of the side circumference face of the LED to be put by the electrodes. In addition, the reflected parts 12 and 22 of both lead members 10 and 20 as well as all the surface of the leveled faces 11 and 21 are processed by silver plating and plated layers 13 and 23 are formed. Thus, the above members and others are so laminated that the light emitted in a direction along laminated layer faces having both positive and negative electrodes at the same side face are not dispersed and permit them to reflect in a right angle to laminated faces. As a result, the above performance of the lead frame drastically improves the light emitting efficiency. |
