Backlight Unit Integration for Display Device Thickness Reduction
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in reducing thickness, improving manufacturing efficiency, and preventing foreign substance intrusion due to the separation between the backlight unit and the display panel, which affects image quality and reliability.
Innovation Solution
A display device configuration where the backlight unit is closely attached to the display panel with a flexible material, eliminating the need for a fixing structure and using a base layer to reduce substrate size, enhance workability, and incorporate a reflection layer and resin layer to diffuse light uniformly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the backlight unit is separated from the display panel, then the display device can be manufactured with standard assembly processes, but the overall thickness increases and foreign substance intrusion risk increases
Solution Approach 1:
The patent merges the backlight unit and display panel into a single integrated structure where the backlight unit is directly attached to the display panel, eliminating the need for separate assembly processes and reducing overall thickness while maintaining manufacturing feasibility
2Reliability
If a fixing structure is used to attach the backlight unit, then the attachment is secure, but the device complexity and thickness increase
Solution Approach 1:
The patent extracts and eliminates the separate fixing structure by directly integrating the attachment function into the base layer itself, which serves both as a structural support and attachment medium, thereby reducing device complexity while maintaining secure attachment
Solution Approach 2:
The base layer is designed to perform multiple functions simultaneously: structural support, light diffusion, and attachment medium, eliminating the need for separate fixing structures and reducing overall device complexity
3Strength
If the substrate size is large, then the structural support is sufficient, but the manufacturing efficiency decreases and workability is reduced
Solution Approach 1:
The patent employs composite material structures and optimized base layer designs that provide sufficient structural support with reduced material quantities and smaller substrate sizes, thereby improving manufacturing efficiency and workability while maintaining structural integrity
4Ease of operation
If the backlight unit is not closely attached to the display panel, then the assembly is easier, but foreign substance intrusion occurs and image quality deteriorates
Solution Approach 1:
The patent merges the backlight unit and display panel into a closely integrated assembly with minimized gaps, preventing foreign substance intrusion while maintaining ease of assembly through the unified base layer structure that serves as both support and sealing element
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 configuration reduces the overall thickness of the display device, simplifies manufacturing, prevents foreign substance intrusion, and ensures uniform luminance and improved image quality by directly attaching the backlight unit to the display panel with a flexible material and optimized light diffusion.
Implementation Method 1
closely attached to the display panel with a flexible material
Implementation Method 2
incorporate a reflection layer and resin layer to diffuse light uniformly
Data Source
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AI summary
A display device includes a display panel, a backlight unit disposed at the back of the display panel, and a back cover disposed at the back of the backlight unit, wherein the backlight unit including a base layer having a hole, a plurality of substrates disposed on the base layer and separated from each other, and light sources and a connector disposed on each substrate; a driving board disposed under the base layer; a cable connecting the connector of a substrate and the driving board, the cable running through the hole.