Semiconductor device manufacturing: process – Coating of substrate containing semiconductor region or of... – Insulative material deposited upon semiconductive substrate
Patent
1998-12-16
2000-09-12
Bowers, Charles
Semiconductor device manufacturing: process
Coating of substrate containing semiconductor region or of...
Insulative material deposited upon semiconductive substrate
438633, 438692, 438780, H01L 2131, H01L 21469
Patent
active
061177989
ABSTRACT:
A method of spin-on-glass planarization. A spin-on-glass layer is formed on a substrate. An accuflo layer with a better fluidity than the spin-on-glass material is formed on the spin-on-glass layer. The accuflo layer and the spin-on-glass layer are etched back by two etching steps with different etching rate. The accuflo layer after being etched is stripped. A dielectric layer is formed.
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Fang Cheng-Yu
Liu Chih-Chiang
Bowers Charles
Nguyen Thanh
United Microelectronics Corp.
Wu Charles C. H.
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