Light-emitting diode crystal grain and its manufacturing method

Abstract

An LED die includes a substrate, a first semiconductor layer, an active layer, a second semiconductor layer, a transparent conductive layer, a first electrode and a second electrode. The first semiconductor layer, the active layer, the second semiconductor layer and the transparent conductive layer are successively formed on the substrate. The first electrode and the second electrode respectively is formed on the first semiconductor layer and the transparent conductive layer. A plurality of grooves defined on the first semiconductor layer, and a plurality of hole groups defined on the second semiconductor layer. The present disclosure also provides a method of manufacturing the LED die.

Description

technical field [0001] The invention relates to a semiconductor crystal grain structure, in particular to a light-emitting diode crystal grain and a method for manufacturing the light-emitting diode crystal grain. Background technique [0002] An existing horizontal light emitting diode (Light Emitting Diode, LED) crystal grain includes a substrate, a semiconductor light emitting structure grown on the substrate, and two electrodes. Because the sapphire substrate is not conductive, the N pole and P pole electrodes are usually plated on the same side, thus forming a horizontal structure. [0003] However, when current is injected from the P pole to the N pole of the horizontal light-emitting diode grain, due to the electrical characteristics of the current, the current between the two electrodes on the same side often takes the shortest distance, resulting in the current being concentrated in the shortest path. on the channel. As a result, the light emitting diode grains ar...

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Problems solved by technology

[0003] However, when current is injected from the P pole to the N pole of the horizontal light-emitting diode grain, due to the electrical characteristics of the current, the current between the two electrodes on the same side often takes the shortest distance, resulting in the current being concentrated in the shortest path. on the channel

As a result, the light emitting diode grains are uneven, which in turn affects the light emitting effect of the light emitting diode grains

In order to achieve the purpose of a uniform circuit, the industry generally adopts metal extension electrodes arranged at intervals on the N pole and the P pole. However, the metal extension electrodes usually cover the light-emitting surface, resulting in low light-emitting efficiency of the LED grains.

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