Mini LED lighting board part 7
(Continued from last time)
Arrange the four completed FPCs in a horizontal row.
Since there is only 0.1 mm between the LEDs, the connection between the FPCs must be 0.1 mm or less, and the FPCs must be disconnected and connected.
We carefully cut and connected while looking into the microscope.
Laminate it on a transparent acrylic board and the demo set is complete!
For the convenience of the control board, a black hidden plate is placed under the light emitting part.
This caused a lot of misunderstandings at the exhibition and was a bit of a failure.
We received many inquiries such as "Does this black part shine?"
It would be great if the black part actually became a full-dot display. .. ..
This time, four driver ICs control 800 LEDs.
In order to make this a display, it is necessary to prepare hundreds of sets of the same thing or another driving method, which is quite a hurdle for us as a bonding contract service.
Please also see the video that shows how it works.
The board produced this time supports up to 1600 LED control.
We were worried whether the processing power of the microcomputer would be okay.
At first, when we confirmed that all the LEDs were lit, it took seconds to rewrite the lighting contents of all the LEDs, but we read the driver IC specifications carefully and optimized the writing method several times. Or, using DMA, it's 100x speed, and now it's probably about 100fps.
Software is important, isn't it? we learned a lot.
This is the end of the introduction of the miniLED bonding demo product.
We are bonding LEDs and other devices.
We are also developing a demo machine for this scale exhibition, so please feel free to contact us.
(End)