LCD Heat Dissipation via Lower Cover Vents and Thermal Sheet
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Solution Overview
Problem
Liquid crystal display (LCD) devices experience degradation in display quality due to heat-induced feature changes in light emitting diodes (LEDs), causing the emission of white light to shift towards one of the RGB colors over time, leading to impaired screen performance.
Innovation Solution
The implementation of a liquid crystal display device with heat emitting holes and a heat emitting sheet in the lower cover to rapidly dissipate heat generated by the LEDs, ensuring efficient heat transfer and emission outside the device, thereby minimizing heat concentration and maintaining pure white light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If light emitting diodes are used as a light source, then power consumption is reduced and brightness is improved, but heat is generated causing feature changes in the LEDs over time
Solution Approach 1:
The patent extracts the heat emission function from the main body structure by providing dedicated heat emitting holes in the lower cover. This allows heat to be removed from the system separately from the light emission function, resolving the contradiction between using LEDs for low power consumption and managing their heat generation.
Solution Approach 2:
The patent introduces a heat emitting sheet as an intermediary component between the LEDs and the external environment. This sheet facilitates heat transfer from the LEDs through the lower cover heat emitting holes, acting as a mediator that enables efficient heat dissipation while maintaining the LED's light emission function.
2Weight of moving object
If light emitting diodes are used, then weight and brightness are improved, but display quality degrades due to heat-induced feature changes
Solution Approach 1:
The patent converts the harmful heat generated by LEDs into a manageable thermal flow by directing it through dedicated heat emitting holes in the lower cover. By providing this specific heat emission path, the harmful thermal effect is transformed into a controlled heat dissipation process, preventing display quality degradation while maintaining the weight and brightness advantages of LEDs.
3Device complexity
If heat is not rapidly emitted, then structural simplicity is maintained, but feature changes in LEDs occur due to heat accumulation
Solution Approach 1:
The patent segments the lower cover structure by providing dedicated heat emitting holes, separating the heat emission function from the overall housing structure. This segmentation allows for efficient heat removal while maintaining relative structural simplicity, as the heat emission paths are integrated into the existing lower cover rather than requiring a completely separate cooling system.
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 effectively reduces heat concentration near the LEDs, maintaining display quality by ensuring that pure white light is consistently supplied to the LC panel, even after prolonged use, thus enhancing the overall screen performance.
Implementation Method 1
a heat emitting sheet disposed in the lower cover so as to correspond to the one or more heat emitting holes
Data Source
AI summary
Disclosed is an LCD device capable of enhancing a display quality on a screen by minimizing feature changes of light emitting diodes (LED) due to heat in a structure that heat is rapidly emitted, from the LED serving as a light source, to outside of a lower cover. The LCD device comprises an LC panel; a plurality of light emitting diodes disposed below the LC panel, and supplying light to the LC panel; a lower cover having one or more heat emitting holes at a bottom surface adjacent to the light emitting diodes, and receiving the light emitting diodes in correspondence to one or more inner side surfaces thereof; and a heat emitting sheet disposed in the lower cover so as to correspond to the one or more heat emitting holes.