Display device and light-emitting device

The light-emitting device with a connecting structure addresses the challenge of improving display resolution by providing stable electrical connections between LEDs and substrates, enhancing the yield rate of electrical connections.

TWI934241BActive Publication Date: 2026-08-01ENNOSTAR CORP
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Patent Information

Application Number
TW113127387
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2018-02-20
Filing Date
2018-06-08
Publication Date
2026-08-01
Estimated Expiration
2038-06-07

AI Technical Summary

Technical Problem

Improving the yield rate of electrical connections between light-emitting diodes (LEDs) and substrates in display devices is necessary to enhance display resolution, as existing technologies face challenges in efficiently transferring and connecting LEDs as pixels.

Method used

A light-emitting device with a connecting structure featuring a conductive region, a light-emitting element with a first contact electrode, and a connecting structure including a first electrical connection portion with varying gold atomic percentages, surrounded by a protective portion, facilitates stable and reliable electrical connections.

Benefits of technology

Enhances the yield rate of electrical connections between LEDs and substrates, improving display resolution by ensuring stable and reliable electrical connections.

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Abstract

A display device includes a light-emitting device, a carrier plate, a light-emitting element, and a connecting structure. The light-emitting device, serving as a pixel of the display device, includes: a carrier plate containing a conductive region; a light-emitting element including a first light-emitting layer capable of emitting a first light source and a first contact electrode formed beneath the first light-emitting layer, wherein the first contact electrode corresponds to the conductive region; and the connecting structure including a first electrical connection portion and a protective portion surrounding the first contact electrode and the first electrical connection portion, wherein the first electrical connection portion is electrically connected to the conductive region and the first contact electrode. The first electrical connection portion includes an upper portion and a lower portion, both of which contain gold, with the atomic percentage of gold in the upper portion being greater than that in the lower portion.
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