Heater block for heating wafer
First Claim
Patent Images
1. A heater block for heating a wafer, the heater block comprising:
- a body member;
a wafer support disposed on said body member;
a plurality of heating elements disposed under the wafer support and in said body member, wherein, for a reference circle visualized from a top view of said body member and centered upon a reference point of said body member, individual ones of said heating elements are located entirely within sectors of said reference circle, and wherein the heat generated from each of said heating elements is transferred to said wafer support;
a power supply to energize said heating elements; and
a controller connected to said heating elements for non-uniformly controlling the energy supplied to said heating elements so as to produce angularly anisotropic heating of said heating elements.
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Abstract
A heater block for heating a wafer comprising a body member; a wafer support disposed on the body member, the wafer support containing a plurality of troughs which extend along the surface thereof; a plurality of heated elements disposed under the wafer support in the body wherein the heat generated from each of the heated elements is transferred to the wafer support; a gas line conmected to the wafer support for supplying gas to the plurality of troughs; means for supplying heat to the heated elements; and a controller connected to the heated elements for controlling the temperature of the heated elements.
398 Citations
9 Claims
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1. A heater block for heating a wafer, the heater block comprising:
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a body member;
a wafer support disposed on said body member;
a plurality of heating elements disposed under the wafer support and in said body member, wherein, for a reference circle visualized from a top view of said body member and centered upon a reference point of said body member, individual ones of said heating elements are located entirely within sectors of said reference circle, and wherein the heat generated from each of said heating elements is transferred to said wafer support;
a power supply to energize said heating elements; and
a controller connected to said heating elements for non-uniformly controlling the energy supplied to said heating elements so as to produce angularly anisotropic heating of said heating elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification