High-voltage direct-current LED or alternating-current LED and manufacturing method thereof
A high-voltage direct current, manufacturing method technology, applied in the direction of electrical components, electrical solid devices, circuits, etc., can solve the problems of increasing process cost and difficulty, opaque silicon substrate, and reduced light extraction efficiency, so as to improve the light output rate, avoid light absorption, The effect of simplifying the manufacturing process
Active Publication Date: 2019-08-30
GUANGDONG INST OF SEMICON IND TECH
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Problems solved by technology
[0003] LEDs can be fabricated using silicon substrates, which have many advantages, including but not limited to: silicon substrates are low in cost, and silicon substrates can achieve large sizes, while traditional sapphire or silicon carbide substrates are relatively large in size. Smaller; silicon material processing technology is very rich, and complex structures can be realized; however, there are also huge challenges in making LEDs with silicon substrate materials. emitted light, resulting in a great reduction in light extraction efficiency
However, the silicon substrate usually has good electrical conductivity. When forming the interconnection structure between each small island, it is necessary to pay attention to the electrical insulation from the silicon substrate, which increases the process cost and difficulty.
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[0077] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.
[0078] It should ...
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The invention provides a high-voltage direct-current LED or alternating-current LED and a manufacturing method thereof, and relates to the technical field of LEDs. According to the high-voltage direct-current LED or alternating-current LED and the manufacturing method thereof in the embodiment of the invention, the light emitting part of the device is obtained by growing a nucleation center layer,independent light emitting units are formed by employing a selective area epitaxy technology, and the light emitting units are mutually separated. In the preparation process, the light-emitting unitsare not divided by using an etching or cutting process, so that the manufacturing process of the high-voltage direct-current LED or alternating-current LED is effectively simplified, and a non-radiative recombination center formed on the etched or cut surface is obviously inhibited. Meanwhile, in the manufacturing process, the first substrate is removed, and the second substrate is used for providing support, so that light absorption of the first substrate can be avoided, and the light emitting rate of the high-voltage direct-current LED or alternating-current LED is improved.
Description
technical field [0001] The present application relates to the technical field of LEDs, in particular, to a high-voltage DC LED or AC LED and a manufacturing method thereof. Background technique [0002] Light Emitting Diode (Light Emitting Diode) is a commonly used light-emitting device. Conventional LEDs are low-voltage DC devices. When using commercial power or other higher-voltage power sources to drive LEDs, complex drive circuits are required to The voltage of the power supply is converted into a low-voltage, DC power supply required by the LED, which significantly increases the cost of the system and is not conducive to the popularization and use of the LED. Many manufacturers have developed alternating current (AC) LED devices or high voltage (HV) LED chips or modules to solve this problem. These AC LEDs can be directly driven by AC mains power. If high-voltage LEDs are used, the complexity of the driving circuit required from the mains power to the LED voltage can b...
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Login to View More IPC IPC(8): H01L27/15H01L33/00H01L33/38
CPCH01L27/156H01L33/007H01L33/382H01L33/385H01L2933/0016H01L33/0093
Inventor黎子兰李成果张树昕
OwnerGUANGDONG INST OF SEMICON IND TECH