Dynamic Thermal Conduction Path for LCD Temperature Regulation
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Solution Overview
Problem
Liquid crystal displays (LCDs) face challenges in maintaining optimal temperature for efficient operation, particularly in varying environments, which affects the speed and accuracy of liquid crystal orientation and refresh rates, leading to undesirable visual artifacts like ghosting and smearing, especially in applications like gaming and virtual/augmented reality.
Innovation Solution
An apparatus with thermal control logic, a heat sinking layer, and a motion actuator is used to form a thermal conduction path between the LCD and a heat conduction element, allowing for selective heat management by coupling and decoupling the heat conduction element with the heat sinking layer based on temperature thresholds to maintain the liquid crystal within a target temperature range, thereby regulating the LCD temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat is continuously conducted from processors to LCD, then LCD temperature is maintained, but liquid crystal response time deteriorates at high temperatures
Solution Approach 1:
The patent implements dynamic thermal management by making the heat conduction path controllable rather than static. The motion actuator enables the heat conduction element to dynamically adjust its coupling state with the heat sinking layer, transitioning between coupled and decoupled positions based on real-time temperature conditions, thereby optimizing liquid crystal response time across varying temperature environments
Solution Approach 2:
The system changes the thermal conduction parameter (heat flow) based on temperature thresholds. When the LCD temperature exceeds the upper threshold, the system reduces heat conduction by decoupling the heat conduction element from the heat sinking layer, preventing excessive temperature rise that would degrade liquid crystal response time
2Temperature
If heat conduction element is coupled with heat sinking layer, then LCD temperature is regulated, but device complexity increases
Solution Approach 1:
The patent introduces a heat conduction element as an intermediary component between the processors and the LCD. This intermediary can be selectively coupled to the heat sinking layer via a motion actuator, providing controlled thermal management. The intermediary structure enables precise temperature regulation while maintaining modularity and avoiding direct complex thermal coupling
Solution Approach 2:
The thermal management system is segmented into distinct functional components: processors, heat sinking layer, heat conduction element, motion actuator, and LCD. This segmentation allows independent control and optimization of each component, simplifying the overall system architecture while enabling sophisticated thermal regulation through selective coupling
3Speed
If heat is directed to LCD to warm liquid crystal, then response time improves in cold environments, but visual artifacts occur due to overheating
Solution Approach 1:
The system employs feedback control by continuously monitoring LCD temperature and adjusting the heat conduction path accordingly. When temperature exceeds the upper threshold, the thermal control logic triggers the motion actuator to decouple the heat conduction element, preventing overheating-induced visual artifacts. This closed-loop feedback ensures liquid crystal response time is optimized without causing thermal distortion
Solution Approach 2:
The system takes preliminary anti-action by preventing excessive heat transfer before it can cause harmful effects. The motion actuator proactively decouples the heat conduction element when approaching dangerous temperature thresholds, preventing the liquid crystal from overheating and generating visual artifacts like ghosting and smearing
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
This solution supports higher refresh rates and improves user experiences in VR and AR by maintaining optimal liquid crystal response times, reducing undesirable motion effects and visual artifacts.
Implementation Method 1
The heat sinking layer is coupled to sink heat from the one or more processors
Implementation Method 2
couple the heat conduction element with the heat sinking layer to form a thermal conduction path between the heat sinking layer and the LCD
Data Source
AI summary
Thermal control logic receives a temperature signal representative of a temperature of a liquid crystal display (LCD). The thermal control logic is configured to selectively drive a motion actuator to couple a heat conduction element with a heat sinking layer that receives heat from one or more processors. The heat conduction element is coupled between the heat sinking layer and the LCD.