Electrically isolated pillars in active devices
First Claim
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1. A method of forming an active device, the method comprising:
- performing a first patterning operation having a first pattern on a first plurality of layers comprising etching the first plurality of layers into a first plurality of strips oriented in a first direction, the first patterning operation defining a first feature of the active device; and
performing a second patterning operation having a second pattern comprising etching at least one strip of the first plurality of strips in a second direction, the second direction being different than the first direction to create a pillar on at least one patterned layer of the first plurality of layers, the second patterning operation defining a second feature of the active device, wherein the first and second patterning operations are performed substantially back-to-back.
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Abstract
A method of forming an active device is provided. The method includes performing a first patterning operation on a first plurality of layers. This first patterning operation defines a first feature of the active device. Then, a second patterning operation can be performed on at least one layer of the first plurality of layers. This second patterning operation defines a second feature of the active device. Of importance, the first and second patterning operations are performed substantially back-to-back, thereby ensuring that the active device can accurately function.
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Citations
41 Claims
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1. A method of forming an active device, the method comprising:
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performing a first patterning operation having a first pattern on a first plurality of layers comprising etching the first plurality of layers into a first plurality of strips oriented in a first direction, the first patterning operation defining a first feature of the active device; and performing a second patterning operation having a second pattern comprising etching at least one strip of the first plurality of strips in a second direction, the second direction being different than the first direction to create a pillar on at least one patterned layer of the first plurality of layers, the second patterning operation defining a second feature of the active device, wherein the first and second patterning operations are performed substantially back-to-back. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification