Epistar Corporation

Jhih-Yong Yang

Chien-Fu Shen

Tsun-Kai Ko

Hui-Chun Yeh

De-Shan Kuo

Min-Hsun Hsieh

Chang-Lin Lee

Chao-Hsing Chen

Yi-Hung Lin

Hsin-Ying Wang

Cheng-Lin Lu

Meng-Hsiang Hong

Kuo-Ching Hung

A light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer and an active area between the first semiconductor layer and the second semiconductor layer, wherein the first semiconductor layer including an upper surface; an exposed region formed in the semiconductor stack to expose the upper surface; a first protective layer covering the exposed region and a portion of the second semiconductor layer, wherein the first protective layer includes a first part with a first thickness formed on the upper surface and a second part with a second thickness formed on the second semiconductor layer, the first thickness is smaller than the second thickness; a first reflective structure formed on the second semiconductor layer and including one or multiple openings; and a second reflective structure formed on the first reflective structure and electrically connected to the second semiconductor layer through the one or multiple openings.

Light-emitting device and manufacturing method thereof

A chip transferring method includes providing a plurality of chips on a first load-bearing structure; measuring photoelectric characteristic values of the plurality of chips; categorizing the plurality of chips into a first portion chips and a second portion chips according to the photoelectric characteristic values of the plurality of chips, wherein the second portion chips comprise parts of the plurality of chips which photoelectric characteristic value falls within an unqualified range; removing the second portion chips from the first load-bearing structure; dividing the first portion chips into a plurality of blocks according to the photoelectric characteristic values, and each of the plurality of blocks comprising multiple chips of the first portion chips; and transferring the multiple chips of one of the plurality of blocks to a second load-bearing structure.

Chip transferring method and the apparatus thereof

A chip transferring method includes providing a plurality of chips on a first load-bearing structure; measuring a photoelectric characteristic value of each of the plurality of chips; categorizing the plurality of chips into a first portion chips and a second portion chips according to the photoelectric characteristic value of each of the plurality of chips; providing a second load-bearing structure; weakening a first adhesion between the first portion chips and the first load-bearing structure or between the second portion chips and the first load-bearing structure; and transferring the first portion chips or the second portion chips to the second load-bearing structure.

A transferring chips method, including providing a plurality of chips on a first load-bearing structure; dividing the first load-bearing structure into a plurality of blocks, and each of the plurality of blocks including multiple chips of the plurality of chips; measuring a characteristic value of each of the plurality of chips; respectively calculating an average characteristic value of each of the plurality of blocks based on the characteristic values of the multiple chips of each of the plurality of blocks; and transferring the multiple chips of at least two blocks of the plurality of blocks with the average characteristic values within the same range to a second load-bearing structure.

A light-emitting structure, comprising: a first light-emitting structure unit and a second light-emitting structure unit, adjacent to and spaced apart from each other; and an electrical connection arranged on the first light-emitting structure unit and the second light-emitting structure unit, and electrically connecting the first light-emitting structure unit and the second light emitting structure unit; wherein the first light-emitting structure unit comprises a first side surface and a second side surface; wherein the first side surface is between the first and the second light-emitting structure units, and the second side surface is not between the first light-emitting structure unit and the second light-emitting structure unit; and wherein the first side surface is inclined and a slope of the first side surface is gentler than a slope of the second side surface.

Growing community of inventors

Hsinchu, Taiwan

Jhih-Yong Yang