Samsung patents test tool that presses LEDs to check if they light up
This filing describes a device used to test light-emitting diodes (LEDs) by pressing them against a board with small bumps. The bumps create a spring-like force to ensure the LEDs make a solid electrical connection during the check. A circuit on the board sends current to the LEDs to see if they work correctly.
In the filing’s own words
An electroluminescence inspection apparatus includes a first substrate; a plurality of electrodes provided at a first surface of the first substrate; a driving circuit provided at a second surface of the first substrate opposite of the first surface and configured to apply a current to a plurality of light emitting diodes provided at a second substrate through the plurality of electrodes; and a plurality of wirings configured to electrically connect the plurality of electrodes with the driving circuit. At least one electrode of the plurality of electrodes includes a plurality of protrusions configured to contact the plurality of light emitting diodes of the second substrate.
What exactly they claim (claim 1)
1. An electroluminescence inspection apparatus, comprising: a first substrate; a plurality of electrodes provided at a first surface of the first substrate and configured to generate an elastic force; a driving circuit provided at a second surface of the first substrate opposite of the first surface and configured to apply a current to a plurality of light emitting diodes provided at a second substrate through the plurality of electrodes; and a plurality of wirings configured to electrically connect the plurality of electrodes with the driving circuit, wherein the plurality of electrodes comprises a first electrode and a second electrode, wherein the first electrode and the second electrode are configured to contact a first chip electrode pad and a second chip electrode pad of one light emitting diode respectively, and wherein the first electrode and the second electrode each comprise a plurality of protrusions in a predetermined arrangement configured to generate the elastic force.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Electroluminescence inspection apparatus
- Patent number
- US12738184B2
- Application number
- 18638228
- Filed
- Apr 17, 2024
- Granted
- Sep 15, 2026
- Inventors
- 6
- Claims
- 16
Classified under
G09G 3/006 Physics & computingH10H 20/8312 Electricity & electronicsH10H 20/857 Electricity & electronicsH10W 90/00 Electricity & electronicsG09G 2330/12 Physics & computingMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.