Step 51.  Dielectric deposition and planarization

 

 

 

 

Step

 

Process

Date

Operator

 

51.1

 

 

Continue with w#4, 9

Undoped TEOS deposition in P-5000. Target = 2um

Oxide thickness on wafers before deposition (LOCOS+PSG):
w#4: 7862  7453  7751  7563  7753 A
w#9: 7862  7459  7587  7466  7701 A

AH-USG recipe, 250sec. deposition time

Oxide thickness after deposition:

w#4: can't measure, bad film quality
w#9: 28747  28390  28341  28660  28497 A

03/21/05

Horvath





51.2

  CMP target: 1um removal
  CMP recipe: 6IN.OXIDE, time: 2x225sec (7.5min)

  Oxide thickness after CMP:

  w#4: smashed in the CMP machine
  w#9: 18096  17223  13172  17455  14350 A





03/21/05




Horvath