What is the reason for the lack of depth in the aluminum etching process?What's the rule out?

What is the cause of insufficient aluminum etching depth?What's the rule out?

I. causes:

1. The etching liquid temperature is too low

2. Etching time is too short

3, etching solution aging, low concentration

Ii. Exclusion methods:

1. Heat the etching solution to the specified process area

2. Appropriately extend the etching time

3. Discard part of the old etching liquid and add new etching liquid, or adjust it through analysis