Bottom Frame Fastening Protrusions for Thin LCD Bezel
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices face challenges in achieving a lightweight, thin profile, and narrow bezel design without compromising image quality, particularly in applications like desktop monitors and wall-mounted televisions where reduced weight and volume with large display areas are required.
Innovation Solution
The design incorporates a liquid crystal panel with a backlight unit featuring a light guide plate, optical sheet, and a bottom frame with reduced thickness and width, utilizing fastening protrusions for secure modularization, which omits the top frame to minimize weight, thickness, and bezel size while maintaining stability and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a conventional LCD device structure is used, then structural stability and image quality are maintained, but weight and volume are excessive
Solution Approach 1:
The patent removes the top frame component from the conventional LCD device structure. By extracting this unnecessary component, the device achieves significant weight reduction and thinner profile while maintaining structural integrity through the optimized bottom frame design with integrated fastening protrusions that secure the liquid crystal panel and backlight unit effectively.
Solution Approach 2:
The bottom frame is designed to integrate multiple functions: it provides structural support, contains the backlight unit, and incorporates fastening protrusions for securing components. This merging of functions into a single component reduces the overall number of parts, thereby reducing weight and simplifying the device structure while maintaining reliability.
2Shape
If a conventional LCD device structure is used, then structural stability is maintained, but bezel width is excessive
Solution Approach 1:
By removing the top frame, the patent eliminates the upper bezel structure, resulting in a narrow or borderless display area. The bottom frame's fastening protrusions compensate for the removed top frame, maintaining structural stability without requiring a wide bezel.
Solution Approach 2:
The patent redistributes structural support from a two-sided frame configuration (top and bottom frames) to a single-sided configuration (bottom frame only). This dimensional change allows the display area to extend to the top edge, minimizing bezel width while the bottom frame's enhanced fastening structure maintains overall stability.
3Length of stationary object
If frame thickness and width are reduced, then device thin profile and narrow bezel are achieved, but manufacturing complexity increases
Solution Approach 1:
The bottom frame integrates multiple functions into a single component: structural support, backlight unit housing, and component fastening. This merging simplifies manufacturing by reducing the number of separate parts that need to be assembled, even though the frame itself has reduced thickness and width.
Solution Approach 2:
The fastening protrusions are pre-formed as integral parts of the bottom frame during the frame manufacturing process. This preliminary action of incorporating fastening features directly into the frame structure simplifies subsequent assembly operations, offsetting the complexity introduced by the reduced frame dimensions.
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 results in a lightweight, thin-profile LCD device with a narrow bezel structure, enhanced stability, and improved reliability, preventing light loss and image degradation, while simplifying manufacturing and reducing production costs.
Implementation Method 1
a light guide plate for guiding light across the liquid crystal panel
Implementation Method 2
an optical sheet over the light guide plate
Implementation Method 3
The alignment direction of the liquid crystal molecules can be controlled by application of an electric field across the liquid crystal molecules
Data Source
AI summary
Discussed is a liquid crystal display device. The liquid crystal display device of the present disclosure comprises a liquid crystal panel, a backlight unit disposed under the liquid crystal panel and including a light guide plate and an optical sheet over the light guide plate, and a bottom frame including a horizontal surface and a side surface, wherein first and second fastening protrusions are provided at an outer surface of the side surface of the bottom frame.