LCD Backplane Airflow Control to Limit Heat and Diaphragm Vibration
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Solution Overview
Problem
High-brightness liquid crystal display devices suffer from poor display effects due to heat generation and temperature extremes, leading to operational failures.
Innovation Solution
A high-brightness liquid crystal display device with a temperature controller and ventilation channels, including a diffuser plate and static pressure cavity, to regulate airflow and maintain optimal operating temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is used to blow air into the display module to adjust temperature, then temperature control is improved, but diaphragm vibration occurs which deteriorates display quality
Solution Approach 1:
The patent introduces an air guide component as an intermediary between the fan and the display module. This air guide redirects the airflow to bypass the diaphragm area, allowing temperature control to be achieved without causing diaphragm vibration. The air guide acts as a mediator that decouples the cooling function from the harmful vibration effect.
Solution Approach 2:
The patent applies different airflow characteristics to different regions. By using the air guide, strong direct airflow is directed away from the diaphragm region, while still maintaining effective cooling through alternative pathways. This local differentiation of airflow patterns resolves the contradiction between cooling efficiency and vibration avoidance.
2Productivity
If high-brightness liquid crystal display module works for a period of time, then display output is improved, but heat accumulation increases which deteriorates display effect and reliability
Solution Approach 1:
The patent establishes a continuous cooling mechanism that operates throughout the display module's working period. The fan continuously circulates air through the air guide and ventilation channels, maintaining ongoing heat dissipation rather than intermittent cooling. This continuous action prevents heat accumulation while sustaining high display output.
Solution Approach 2:
The air guide component serves as a dedicated heat dissipation pathway that continuously carries away heat from the display module. By providing a dedicated thermal management route independent of the display function, the system maintains continuous operation without heat buildup affecting display quality.
3Adaptability or versatility
If outdoor temperature is extremely low, then environmental adaptability is tested, but display module operation is disabled which reduces reliability
Solution Approach 1:
The temperature controller continuously monitors the display module's temperature and adjusts fan operation accordingly. In cold environments, the system detects low temperatures and activates heating functions or adjusts airflow patterns to prevent the display module from freezing. This feedback mechanism ensures reliable operation across extreme temperature ranges.
Solution Approach 2:
The patent implements dynamic adjustment of the cooling system based on environmental conditions. The fan speed, airflow direction, and ventilation channel usage are dynamically modified in response to temperature changes. In cold environments, the system transitions from cooling mode to heating or insulation mode, ensuring reliable operation while maintaining adaptability to extreme weather.
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 adjusts temperature through airflow, reducing diaphragm vibration and improving display quality while extending product lifespan.
Implementation Method 1
fans are disposed on the display module in correspondence to the first ventilation channel of the temperature controller, the fans forming an airflow that flows through the first ventilation channel, to adjust temperature of the display module
Implementation Method 2
a heat exchange module arranged within the casing, wherein the heat exchange module is provided with first heat exchange holes positioned inside the sealed space, wherein a first circulation airflow is formed between the first heat exchange holes and the sealed space; and a second heat exchange holes positioned outside the sealed space, wherein the second heat exchange holes communicate with the outside to form a second circulation airflow for performing heat exchange with the first circulation airflow
Data Source
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AI summary
The present invention relates to a high-brightness liquid crystal display device, including a display module; a temperature controller abutting a back surface of the display module, a first ventilation channel being formed in the temperature controller; and fans disposed on the display module in correspondence to the first ventilation channel of the temperature controller. The fans form an airflow that flows through the first ventilation channel, to adjust the temperature of the display module. According to the present invention, the temperature controller abuts the back surface of the display module to implement temperature control on the back surface of the display module. The back surface of the display module is a lamp panel, and the temperature controller abuts the lamp panel. The airflow formed by the fans quickly reduces and increases the temperature of the lamp panel, thereby ensuring that the lamp panel works at an appropriate environmental temperature.