Micro LED display panel
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United States of America Patent
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Jun 21, 2022
Grant Date -
Jul 16, 2020
app pub date -
Jan 15, 2020
filing date -
Jan 15, 2019
priority date (Note) -
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Abstract
An epitaxial LED wafer is provided and chip process is processed such that each LED chip on the epitaxial wafer can be probed by an array of probe pin and results can be stored in a database. The epitaxial wafer is then diced on an expandable tape, and a display substrate is provided with driving circuits. The tape is expanded such that a pitch of LED chips on the tape is equal to a pitch of LED chips on display substrate. An array of drop pins will collectively and selectively drop LED chips, from the tape to the display substrate, with the same specification according to the probed results in the database.
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