Vertical high voltage light emitting diode chip and manufacturing method thereof

Abstract

The invention discloses a vertical high voltage light emitting diode chip and a manufacturing method thereof. With the design of the vertical high voltage light emitting diode chip, the back surface electrode in a first chip region is electrically connected with a conductive substrate through a hole and a bonding layer and the back surface electrode is exposed without etching in the first chip region, thereby ensuring that the effective light emitting area of the vertical high voltage light emitting diode chip is large; besides, the back surface electrode of the first chip region does not needto be wired, thereby saving cost and improving reliability; in addition, the current spreading of each chip region is vertical, and the back surface electrode of the first chip region and the front surface electrode of the Nth chip region form a vertical structure so that the current spreading of the vertical high voltage light emitting diode chip is good, and the current resistance ability can be improved by avoiding current congestion; furthermore, the vertical high voltage light emitting diode chip has a better light type and meets the Lambert distribution and is easier to distribute light.

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.

Images