US 11,894,495 B2Granted

Micro LED structure and display device

AssigneeLextar Electronics Corporation

InventorsKai-Hung Cheng, Fu-Han Ho

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Abstract

A micro LED structure includes a first micro LED chip having opposite first and second sides, a second micro LED chip adjacent to the first side of the second micro LED chip, a third micro LED chip adjacent to the first side of the first micro LED chip, and optical structures respectively over the first micro LED chip, the second micro LED chip and the third micro LED chip. Each of the first, second and third micro LED chip includes a semiconductor stack, a metal pad and a reflective coating layer. The semiconductor stack includes a first semiconductor layer, an active layer in contact with the first semiconductor layer, and a second semiconductor layer in contact with the active layer. The metal pad is in contact with the first semiconductor layer, and the reflective coating layer is disposed around sidewalls of the semiconductor stack.

Claims19

Dependent claims

A micro LED structure, comprising:

a first micro LED chip having opposite first and second sides;
a second micro LED chip adjacent to the first side of the first micro LED chip;
a third micro LED chip adjacent to the first side of the first micro LED chip, wherein each of the first micro LED chip, the second micro LED chip and the third micro LED chip comprises:
a semiconductor stack comprising a first semiconductor layer, an active layer in contact with the first semiconductor layer, and a second semiconductor layer in contact with the active layer;
a metal pad in contact with the first semiconductor layer;
and
a reflective coating layer disposed around sidewalls of the semiconductor stack;
optical structures respectively over the first micro LED chip, the second micro LED chip and the third micro LED chip;
and
a planarization layer surrounding the first micro LED, the second micro LED and the third micro LED.

7 more elements

Dependencies are inferred from the claim text.