Backlight Optical Sheet Air Gap for Display Thickness
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Solution Overview
Problem
Existing display devices have a complex structure that makes it difficult to achieve a thin profile and often result in reduced visibility due to their design, which is not efficiently addressed by current technologies.
Innovation Solution
A display device configuration that includes a display panel with a backlight unit featuring an optical sheet part and a light source, where the optical sheet part is not fixed to a bracket, allowing for an air gap that enhances optical characteristics and reduces manufacturing costs by eliminating the need for fasteners like screws, thereby simplifying the fixing process and reducing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the optical sheet part is fixed to the bracket using fasteners, then the structural stability is improved, but the device thickness increases and manufacturing complexity increases
Solution Approach 1:
The patent removes the bracket and fasteners from the assembly, extracting the fixation function and replacing it with an adhesive layer applied directly to the backlight unit housing. This eliminates the mechanical fastening structure that会增加厚度, while maintaining structural stability through adhesive bonding.
Solution Approach 2:
The patent replaces the mechanical fastening system (screws, clips, or other fasteners) with a chemical bonding system (adhesive layer). This substitution eliminates the need for mechanical interlocking structures that increase device thickness, while achieving equivalent or superior fixation stability.
2Stability of the object's composition
If the optical sheet part is fixed to the bracket using fasteners, then the structural stability is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent removes the bracket and fasteners from the assembly, extracting the fixation function and replacing it with an adhesive layer applied directly to the backlight unit housing. This eliminates the mechanical fastening structure that会增加厚度, while maintaining structural stability through adhesive bonding.
Solution Approach 2:
The patent replaces the mechanical fastening system (screws, clips, or other fasteners) with a chemical bonding system (adhesive layer). This substitution eliminates the need for mechanical interlocking structures that increase device thickness, while achieving equivalent or superior fixation stability.
3Stability of the object's composition
If the optical sheet part is fixed to the bracket using fasteners, then the structural stability is improved, but the optical characteristics and visibility deteriorate
Solution Approach 1:
The patent introduces an air gap as an intermediary space between the optical sheet part and the bracket structure. This air gap prevents direct contact that would block or scatter light, allowing light to pass through the optical sheet uninterrupted while the adhesive layer provides indirect structural support, thereby maintaining both optical performance and structural stability.
Data Source
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AI summary
A display device includes a display panel including a front substrate and a back substrate, a back cover positioned in the rear of the display panel, and a backlight unit positioned between the display panel and the back cover. The backlight unit includes a plurality of optical sheets. At least first optical sheet of the plurality of optical sheets includes an opening. At least second optical sheet of the other optical sheets except the first optical sheet among the plurality of optical sheets includes a protrusion corresponding to the opening of the first optical sheet.