OLED Display Adhesive Layer for Shock Resistance and Visibility
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Solution Overview
Problem
Contemporary display devices with OLED panels suffer from reduced visibility and increased thickness due to refractive index differences and air gaps between the display panel and the transparent protective unit, which also compromise shock-resistance.
Innovation Solution
A display device design featuring a transparent adhesive layer between the OLED panel and the protective unit, and a fixing member at the rear side to surround and secure the panel, eliminating air gaps and enhancing impact resistance while minimizing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gap is maintained between the display panel and the transparent protective unit, then shock-resistance is improved, but visibility is deteriorated due to refractive index difference and transmittance loss
Solution Approach 1:
An adhesive layer is introduced as an intermediary substance between the display panel and the transparent protective unit. This adhesive layer has a refractive index that matches or closely approximates that of the transparent protective unit, thereby eliminating the refractive index difference that causes visibility deterioration. Simultaneously, the adhesive layer maintains the necessary gap for shock-resistance while providing optical continuity.
2Reliability
If the gap between the display panel and the transparent protective unit is increased, then shock-resistance is improved, but the thickness of the display device increases
Solution Approach 1:
The refractive index parameter of the adhesive layer is specifically selected to match the transparent protective unit, enabling the adhesive layer to serve dual purposes: maintaining an optimal gap for shock-resistance while being optically transparent. This parameter optimization allows for a minimized gap thickness that satisfies both mechanical and optical requirements.
3Length of stationary object
If the gap between the display panel and the transparent protective unit is reduced, then thickness is reduced, but visibility is deteriorated due to increased refractive index difference effects
Solution Approach 1:
By changing the refractive index parameter of the adhesive layer to match the transparent protective unit, the optical interface between these components becomes invisible. This allows the gap to be minimized for thinness without suffering from refractive index difference effects, as the adhesive layer creates optical continuity even at minimal thickness.
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 solution reduces the overall thickness of the display device, improves visibility by eliminating refractive index differences, and enhances impact resistance without increasing material consumption or manufacturing costs.
Implementation Method 1
an adhesive layer formed between the display panel and the transparent protective unit to adhere the transparent protective unit to the display panel
Data Source
AI summary
A display device is provided with a display panel displaying variable visual images, a transparent protective unit located at a front side of the display panel, an adhesive layer that is formed between the display panel and the transparent protective unit to adhere the transparent protective unit to the display panel, and a fixing member disposed at a rear side of the display panel and surrounding and fixing side surfaces of the display panel and the adhesive layer.