Fixing Unit with Reflection Member for LCD Luminance
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Solution Overview
Problem
In liquid crystal display devices, the formation of an empty step between the liquid crystal panel and the backlight unit compromises the structural support and reduces luminance due to heat dissipation requirements, which necessitates a solution to enhance both support and light reflection.
Innovation Solution
A fixing unit is introduced between the liquid crystal panel and the backlight unit, comprising a mold and a reflection member to support the panel and optical sheet, while reflecting light back onto the light guide plate to improve luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a LED flexible printed circuit board is disposed toward a cover bottom to discharge heat, then heat dissipation is improved, but an empty step is formed in the space between the liquid crystal panel and the backlight unit, reducing support force and omitting the optical sheet support structure
Solution Approach 1:
A fixing unit is introduced as an intermediary component between the liquid crystal panel and the backlight unit. This fixing unit includes a fixing plate that spans across the empty step region, providing continuous support surface. The fixing unit incorporates both support function (through the fixing plate) and heat dissipation function (through the LED FPCB), thereby resolving the contradiction between heat dissipation performance and structural support strength.
2Loss of energy
If an empty step is formed in the space between the liquid crystal panel and the backlight unit, then heat dissipation path is created, but the structure for supporting the optical sheet is omitted and support force is reduced
Solution Approach 1:
The fixing unit merges multiple functions into a single integrated component: (1) structural support function through the fixing plate that maintains support force across the empty step region, (2) optical sheet support function through the fixing plate that prevents omission of support structure, and (3) heat dissipation function through the integrated LED FPCB. This merging resolves the contradiction by achieving all three functions simultaneously without compromising any single function.
3Strength
If the fixing unit is added to support the liquid crystal panel and fix the optical sheet, then structural support and optical sheet fixation are improved, but device complexity increases
Solution Approach 1:
The fixing unit is designed as a universal component that performs multiple functions: supporting the liquid crystal panel, fixing the optical sheet, and facilitating heat dissipation. By making the fixing unit multi-functional, the patent reduces the need for separate components for each function, thereby minimizing the increase in device complexity while achieving multiple objectives simultaneously.
4Illumination intensity
If the reflection member is added to reflect light back onto the light guide plate, then luminance at the light-incident part is improved, but device complexity increases
Solution Approach 1:
The reflection member is integrated into the fixing unit, merging the light reflection function with the existing structural support and heat dissipation components. This integration approach minimizes the increase in device complexity by adding the reflection function to an already necessary component rather than adding a completely separate component 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
The fixing unit securely supports the liquid crystal panel, enhances heat dissipation, and improves image quality by reflecting light, thus addressing the structural and luminance issues in the empty space between the panel and the backlight unit.
Implementation Method 1
a fixing unit provided in an empty space between a liquid crystal panel and a backlight unit for supporting the liquid crystal panel together with a mold and fixing an optical sheet. The fixing unit may include a reflection member for improving luminance at a light-incident part of a light guide plate
Data Source
AI summary
Disclosed is a display device configured such that a fixing unit is provided in an empty space between a liquid crystal panel and a light guide plate of a backlight unit in order to support the liquid crystal panel together with a mold and to fix an optical sheet and such that the fixing unit is provided with a reflection member in order to improve luminance at a light-incident part of the light guide plate, whereby image quality is improved.