A vertical high-voltage light-emitting diode chip and its manufacturing method

Abstract

The invention discloses a vertical high-voltage light-emitting diode chip and a manufacturing method thereof, wherein. Through the design of the vertical high voltage light emitting diode chip, the back electrode at the first chip area is electrically connected to the conductive substrate through the opening and the bonding layer, so that the back electrode is exposed without etching in the first chip area, so as to ensure the vertical high voltage light emitting diode. The effective light-emitting area of ​​the chip is large; and, the back electrode of the first chip area does not need to be wired, which saves costs and improves reliability; in addition, the current expansion of each chip area is in the vertical direction, and the first chip area The back electrode and the front electrode of the Nth chip area form a vertical structure, so that the current of the vertical high-voltage light-emitting diode chip expands better, thereby avoiding current congestion and improving the current tolerance; in addition, the vertical high-voltage light-emitting diode chip has a better light type , which conforms to the Lambertian distribution and is easier to light distribution.

Description

technical field [0001] The invention relates to the technical field of light-emitting diodes, and more specifically, to a vertical high-voltage light-emitting diode chip and a manufacturing method thereof. Background technique [0002] Light Emitting Diode (English: Light Emitting Diode, referred to as: LED), as a very influential new product in the optoelectronics industry, has the characteristics of small size, long service life, colorful colors, low energy consumption, energy saving and environmental protection, and high safety. Another leap in the history of human lighting after incandescent lamps and fluorescent lamps is driving the upgrading of traditional lighting and display industries. It is widely used in lighting, display screens, signal lights, backlights, toys and other fields. [0003] Traditional light-emitting diodes generally work under direct current, and the voltage of a single LED chip is generally between 2-4V. In practical applications, especially in h...

AI Technical Summary

Problems solved by technology

However, the current design of chip-level serial connection is mostly used to make light-emitting diode chips with horizontal electrode structures. Under the condition of light-emitting diode chips with the same size, the effective light-emitting area of ​​light-emitting diode chips with horizontal structures is relatively small.

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