Detection circuit substrate for detecting driver backplane of micro-led display

The detection circuit board addresses the inability of existing test pads to test conductive connection holes by forming a detection circuit that verifies the integrity of pad pairs and connection holes, enhancing the yield and functionality of micro LED displays.

TWI934870BActive Publication Date: 2026-08-01AU OPTRONICS CORP
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Patent Information

Application Number
TW114152308
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-12-31
Publication Date
2026-08-01
Estimated Expiration
2045-12-30

AI Technical Summary

Technical Problem

Existing test pads on miniature LED display driving backplanes cannot effectively test the conductive connection holes between pad pairs and driving elements, which are crucial for ensuring the driving capability and yield of micro LED displays.

Method used

A detection circuit board with detection pads, conductive lines, and bumps is used to align and bond with the micro LED display driver backplane, allowing for the detection of pad pairs and conductive connection holes, forming a detection circuit to verify the functionality and integrity of the backplane.

Benefits of technology

Ensures the yield of micro LED display driver backplanes by accurately testing the conductive connection holes and pad pairs, thereby preventing defects and ensuring proper electrical connectivity.

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Abstract

A detection circuit board for testing a micro-LED display driver backplane includes a substrate, detection pads, conductive lines, and conductive bumps disposed on the substrate. The conductive lines electrically connect to the detection pads, and the conductive bumps electrically connect to the conductive lines. The substrate is used to align and bond with the micro-LED display driver backplane, such that the detection pads electrically connect to the pad pairs of the micro-LED display driver backplane, and the conductive bumps electrically connect to a first test pad of the micro-LED display driver backplane, thereby forming a detection circuit with the detection pads, pad pairs, conductive lines, conductive bumps, and the first test pad.
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