Semiconductor Substrate Heater Layout for Uniform Temperature Control
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Solution Overview
Problem
Existing semiconductor substrate heating devices face challenges in achieving temperature uniformity while incurring high manufacturing and maintenance costs, complex wiring, and reduced yield due to increased heater zones and complicated design.
Innovation Solution
A semiconductor substrate heating device with a heating cavity, a main heating part, a compensation control part, and temperature compensation units that adjust temperature uniformly with minimal manufacturing and maintenance costs by using a compensation control part and temperature compensation units arranged in correspondence, avoiding complex wiring and facilitating disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the number of zones of the heater is increased to improve temperature uniformity, then temperature uniformity is improved, but manufacturing cost and development cost are greatly increased
Solution Approach 1:
The heater is divided into multiple independent heating zones, each controlled by separate heating circuits. This allows localized temperature adjustment in specific areas without affecting the entire heating plate, enabling temperature uniformity improvement without requiring a complete redesign of the entire heater structure
Solution Approach 2:
Different regions of the heating plate are equipped with different numbers of heating zones based on their specific temperature requirements. Areas requiring higher temperature uniformity have more heating zones, while other areas use fewer zones, optimizing both performance and cost
2Temperature
If the number of zones of the heater is increased to improve temperature uniformity, then temperature uniformity is improved, but device complexity and wiring complexity are greatly increased
Solution Approach 1:
Multiple heating zones share common structural components and control systems. The heating elements, insulation layers, and support structures are merged into a unified modular design, reducing overall device complexity despite the increased number of zones
Solution Approach 2:
The heating zones are designed with dynamic control capabilities, allowing selective activation and deactivation of specific zones based on real-time temperature requirements. This dynamic control simplifies the effective wiring complexity by enabling software-based control strategies rather than requiring dedicated hardwired control for each zone
3Temperature
If the number of zones of the heater is increased to improve temperature uniformity, then temperature uniformity is improved, but yield of the heater is reduced
Solution Approach 1:
Redundant heating circuits and components are built into the heater design beforehand. If a heating element or circuit fails in one zone, the system can continue operating with reduced capacity rather than complete failure, cushioning against yield loss and improving overall reliability
4Temperature
If the number of zones of the heater is increased to improve temperature uniformity, then temperature uniformity is improved, but space for installing hardware is occupied
Solution Approach 1:
The heating zones are arranged in a nested or layered configuration where heating elements are positioned within available spaces of the heating plate structure. This nesting approach allows multiple heating zones to coexist in a compact arrangement, maximizing temperature uniformity while minimizing the occupied installation space
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively controls temperature uniformity with reduced costs and simplified maintenance by using a compensation control part and temperature compensation units, enhancing heater performance and yield.
Implementation Method 1
a temperature compensation unit arranged between the heating plate and the compensation control part and being in communication connection with the compensation control part; wherein, the temperature compensation unit and the temperature control compensation area are arranged in a correspondence manner, so as to perform temperature compensation adjustment on the temperature control compensation area
Data Source
AI summary
The disclosure provides a semiconductor substrate heating device, comprising a heating cavity, a main heating part, a compensation control part and at least one temperature compensation unit. The compensation control part and several temperature compensation units are arranged in the heating cavity of the semiconductor substrate heating device, a top surface of the compensation control part and a bottom surface of a heating plate are arranged in a correspondence manner, and the several temperature compensation units arranged between the heating plate and the compensation control part and being in communication connection with the compensation control part are arranged in one-to-one correspondence with several temperature control compensation areas at the bottom surface of the heating plate. Complicated outgoing design is avoided, and temperature compensation adjustment can be performed on the temperature control compensation areas under the control of the compensation control part, thereby effectively controlling the temperature uniformity of the semiconductor substrate with as little manufacturing and maintenance costs as possible.