Short-pitch thin LED lead frame

Abstract

The invention relates to a short pitch thin LED lead frame, which comprises a fabrication rim, wherein, fabrication holes are evenly opened on the fabrication rim that is connected with a plurality ofLED double-pin leads which are connected with each other by upper connection ribs. The distance between the center lines of the two adjacent LED double-pin leads, namely, the pitch a, is less than 7.26 mm while the thickness of the steel belt which is used for manufacturing the lead frame is less than 0.5mm. In the invention, the distance between the center lines of the two adjacent LED double-pin leads on the single LED lead frame is shortened, and the thickness of the used steel belt is reduced, therefore, more LED double-pin leads can be arranged on each lead frame, the use quantity of thesteel belt is reduced, and the production cost is lowered.

Description

technical field [0001] The invention relates to a lead frame for producing LEDs, that is, light-emitting diodes, in particular to a short-pitch thin LED lead frame. Background technique [0002] LED, or light-emitting diode, is a green and environmentally friendly light source. It is widely used in indicator lights, decorative lights, landscape lights, flashlight lights, traffic lights, car lights, road lights, etc., and will gradually replace traditional lighting. Cold light source, low energy consumption, high efficiency, long life and other properties make it more and more widely used. However, due to the high cost of packaging and manufacturing, the cost of LED is high, which affects and hinders the application and development of LED. At present, the general lead frame process length of in-line LED packaging is 152.4 mm, the pitch is 7.62 mm, the thickness of the steel strip is 0.5 mm, and the pitch distance is large, which makes the steel strip thicker and increases the...

AI Technical Summary

Problems solved by technology

[0002] LED, or light-emitting diode, is a green and environmentally friendly light source. It is widely used in indicator lights, decorative lights, landscape lights, flashlight lights, traffic lights, car lights, road lights, etc., and will gradually replace traditional lighting. Cold light source, low energy consumption, high efficiency, long life and other properties make it more and more widely used, but due to the high cost of packaging and manufacturing, the cost of LED is high, which affects and hinders the application and development of LED

At present, the length of the common lead frame process for in-line LED packaging is 152.4 mm, the pitch is 7.62 mm, the thickness of the steel strip is 0.5 mm, and the pitch distance is relatively large, which makes the steel strip thicker and increases the consumption of the steel strip.

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