Solid-state light-emitting element with mesh channel and method of making the same

Abstract

The invention relates to a solid-state light-emitting element with a mesh channel and a manufacturing method thereof. The solid-state light-emitting element with a mesh channel includes a substrate, a light-emitting layer unit formed on the substrate and generating light when electric energy is supplied, and an electrode unit that cooperates with an external circuit to provide electric energy to the light-emitting layer unit, especially the light-emitting layer unit It has a layer body and a plurality of blocks extending downward from the bottom surface of the layer body at intervals and connected to the substrate, and the bottom surface of the layer body, the blocks and the top surface of the substrate jointly define a reticular channel structure, so that the light generated by the light-emitting layer unit and traveling toward the substrate has a higher probability of being reflected, thereby effectively improving the overall luminous brightness of the solid-state light-emitting element; in addition, the present invention also provides the reticulated channel A method for manufacturing a solid-state light-emitting element.

Description

Technical field [0001] The invention relates to a solid-state light-emitting element that generates light and a manufacturing method thereof, in particular to a solid-state light-emitting element with a mesh channel and a manufacturing method thereof. Background technique [0002] Solid-state light-emitting elements, such as light-emitting diodes, are semiconductor devices that convert electrical energy into light energy. In terms of the relationship between the input electrical energy and the converted light energy, there are roughly internal quantum efficiency (internal quantum efficiency) and external quantum efficiency ( The light extraction efficiency directly affects the brightness and uniformity of the light-emitting diodes. Therefore, how to improve and adjust the light extraction efficiency of the light-emitting diodes has always been a very important topic. [0003] Such as figure 1 As shown, figure 1 It is a schematic cross-sectional view illustrating the structure of a ...

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Problems solved by technology

[0010] Although the overall light extraction efficiency of the solid-state light-emitting element composed of the patterned substrate 21 is indeed improved compared with the solid-state light-emitting element composed of a flat substrate, the patterned substrate 21 is in a flat state with a complete lattice arrangement. The wafer is produced through many processes such as lithography and etching, and the lattice integrity of the top surface of the wafer in the initial flat state will inevitably be destroyed during the implementation of these processes such as etching, resulting in the patterned substrate 21 When the light-emitting layer unit 12 is formed by epitaxy, unnecessary voids or dislocations are likely to be generated, which instead reduces the internal quantum efficiency of the light-emitting layer unit 12, thereby reducing the overall luminous efficiency.

[0011] It can be seen that the above-mentioned existing improvement method of simply using a patterned substrate to improve the light extraction efficiency of a solid-state light-emitting element and the manufactured solid-state light-emitting element obviously still have inconveniences and defects in terms of product structure, manufacturing method and use. and need to be further improved

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve

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