Light-emitting diode and its manufacturing method
A technology of light-emitting diodes and manufacturing methods, which is applied to electrical components, circuits, semiconductor devices, etc., can solve the problems of light loss, low brightness, and inability to emit light to the outside, and achieve the effect of increasing brightness and increasing light output rate
Inactive Publication Date: 2011-11-30
ZHANJING TECH SHENZHEN +1
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However, the light generated by the LED can only be emitted to the outside when the angle is smaller than the critical angle. Otherwise, due to internal reflection and other reasons, a large amount of light will be lost inside the LED and cannot be emitted to the outside, resulting in a low light output rate of the LED. , the brightness is not high
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[0029] figure 1 Shown is the flow chart of the manufacturing method of the light emitting diode of the present invention, the manufacturing method mainly includes the following steps: first, a chip is provided, the chip includes a substrate and a light emitting structure formed on the substrate; then electrodes are formed on the light emitting structure; The outer surface of the light-emitting structure and the electrode are coated with photoresist; and then the photoresist is removed by etching, so that the outer surface of the light-emitting structure and the outer surface of the electrode are roughened, so that the light energy generated by the chip can be processed repeatedly After reflection, it emits through the roughened light-emitting surface to increase the light-emitting rate of the chip, thereby obtaining a high-brightness light-emitting diode. The manufacturing method of the light-emitting diode of the present invention and the excellent light-emitting diode obtain...
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A light-emitting diode, including a substrate, a light-emitting structure on the substrate, and an electrode arranged on the light-emitting structure, wherein the outer surface of the light-emitting structure is the light-emitting surface of the light-emitting diode, and the part of the light-emitting surface connected to the electrode The light-emitting surface is a smooth surface, and at least a part of the light-emitting surface around the electrode is a rough surface. The manufacturing method of the light-emitting diode includes the following steps: providing a chip, the chip includes a substrate and a light-emitting structure formed on the substrate; forming an electrode on the light-emitting structure ; Coating photoresist on the outer surface of the light-emitting structure and the electrode; etching and removing the photoresist to roughen the outer surface of the light-emitting structure and the outer surface of the electrode, thereby changing the geometry of the interface with the outside world, The light output rate of the light-emitting diode is increased, thereby increasing the brightness of the light-emitting diode.
Description
technical field [0001] The invention relates to a light emitting diode, in particular to a method for manufacturing the light emitting diode. Background technique [0002] In recent years, with the continuous deepening of research on semiconductor light-emitting materials and the continuous improvement of the manufacturing process of light-emitting diodes (LEDs), considerable breakthroughs have been made in the luminous efficiency and color of light-emitting diodes, making the application of light-emitting diodes leap to high-efficiency The lighting source market becomes possible. However, the light generated by the LED can only be emitted to the outside when the angle is smaller than the critical angle. Otherwise, due to internal reflection and other reasons, a large amount of light will be lost inside the LED and cannot be emitted to the outside, resulting in a low light output rate of the LED. , the brightness is not high. Therefore, it is necessary to find a manufactur...
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IPC IPC(8): H01L33/20H01L33/22
CPCH01L33/38H01L33/22
Inventor 洪梓健沈佳辉
Owner ZHANJING TECH SHENZHEN