DLP660TE: DMD shows dark pixels

Hello Zeno,

Thank you for reaching out to us through E2E!

Could you please describe when this is seen? Sorry, I'm not understanding what is meant by "just only in a flash" means.

Are these persistent - seen over an extended amount of time? Or is this just a snapshot?

Best,

Aaron

Hi Aaron,

Thank you for your response.

this is seen by our customer calibrates the light engine using white image from solid field , they can see some pixels become dark suddenly and back to normal soon like a snapshot.

Then they continue check the DMD and the dark pixels show again in diiferent position and back to normal again.

Do you need any other imformation?

Thank you again.

BR,

Zeno

Hello Zeno,

Thank you for your description! Could you please advise what kind of system is being utilized, LED or ColorWheel?

Best,

Aaron

Hi Aaron,

This is a LED system, there are several engine have this issue at out customer side.

Have you need other information for this issue?

Thank you.

BR,

Zeno

Hello Zeno,

I've been checking with my team and we've had an extended weekend, thank you for your patience!

1. What is the cause of dark pixels? 

This seems to be a timing question, there might be a slight mismatch.

2. Will DMD be damaged quickly when the dark pixels appear?

Because the pixels are not sticking dark, this should be fixed in software.

3. Could the DMD continue be used if the DMD has dark pixels?

It seems since the mirrors are still moving there shouldn't be anything mechanically wrong with the device, again software should be able to fix this.

Are you in touch with your FAE in your region? We can continue to work with you and them through e-mail, if not we can reach out to you through e-mail.

Best,

Aaron

Hi Aaron,

Thank you for your reply, that is helpful for us to discuss with our customer.

And yes, we do keep in touch with our FAE tony, we can continue to work through e-mail.

I will send an email to you.

Thanks again

Zeno

Hello Zeno,

Thank you, we will proceed offline and come back with updates accordingly.

Best,

Aaron

Hello Zeno,

Just as a reminder, we haven't heard from you since our initial contact. Please continue to maintain contact with us for a swift resolution.

Best,

Aaron