LED die with central peak surface brightness

By shaping and electrically adjusting the LED die, the problem of insignificant light in the corners of square or rectangular LED dies is solved, and more efficient optical system performance and material utilization are achieved.

CN118633353BActive Publication Date: 2025-04-04LUMILEDS LLC
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Patent Information

Application Number
CN202280090796.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-12-01
Filing Date
2022-11-17
Publication Date
2025-04-04
Estimated Expiration
2042-11-17

AI Technical Summary

Technical Problem

The light emitted from the corners of existing square or rectangular LED dies does not significantly contribute to the quality of the optical system, resulting in waste of optical materials and electrical energy.

Method used

By shaping the LED die, the surface area associated with corners is reduced or eliminated, and the electrical connection is adjusted, so that the surface brightness forms a peak at the center, which decreases as the distance increases.

Benefits of technology

It reduces the waste of optical materials and electrical energy, improves the quality of the optical system, and effectively utilizes the materials, reducing the power consumption of LED dies.

✦ Generated by Eureka AI based on patent content.

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Abstract

A light emitting diode (LED) die may include a p-n junction between a p-doped semiconductor material and an n-doped semiconductor material. The LED die may include a through hole that can power the p-n junction. The through holes may be optionally electrically connected in parallel to each other. A controller may provide current to the through holes to power the LED die. The density of the distribution of the through holes may peak at or near the center of the LED die and decrease as the distance away from the density peak increases, so that when the through holes are powered, the surface brightness of the light emitted by the LED die peaks at or near the center of the LED die and decreases as the distance away from the surface brightness peak increases.
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Citation Information

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