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Design >> High-Power Design >> The HV LCD driver and LED driver process
https://designers-guide.org/forum/YaBB.pl?num=1204166287

Message started by dandelion on Feb 27^th, 2008, 6:38pm

Title: The HV LCD driver and LED driver process
Post by dandelion on Feb 27^th, 2008, 6:38pm

Hi,
I am designing a LED driver with 18V HV CMOS process. BUt the foundry tell me no customer used this process for the LED driver IC deisgn. Alough the process seemed to meet my design requirements. I am not sure if there is any risks because of no sucessfull mass production experience for this processs to LED driver.

But the foundry tell me that this prcocess have sucessfully mass productions for the HV LCD drivers IC.

So I wonder what is the main descrepancy between the LED driver and LCD driver for the HV process erquirments?

Thanks

Title: Re: The HV LCD driver and LED driver process
Post by vivkr on Apr 9^th, 2008, 6:54am

Hi dandelion,

I can't say about the power levels since I have never made either. But I believe LEDs need to be supplied DC power, whereas LCDs are supplied with AC (basically,
you apply a voltage and then apply the reverse polarity voltage)

Regards
Vivek