Light Guide Member Recesses Prevent Light Leakage in Thin Displays
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Solution Overview
Problem
Thin display devices experience light leakage due to their reduced thickness, which affects visibility and reliability.
Innovation Solution
A display device design incorporating a light guide member with recessed portions and a filling portion of lower refractive index, positioned between the cover member and the display panel, to guide and refract leaking light, preventing it from escaping through the bezel area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the display device is made thinner to reduce weight and improve portability, then the device becomes more compact and portable, but light leakage occurs due to reduced thickness
Solution Approach 1:
The patent converts the harmful light leakage into a beneficial effect by using the thin space created by reduced thickness to house a light guide member that redirects leaked light back to the display area, transforming the problem of light leakage into a solution that improves display uniformity
Solution Approach 2:
The light guide member acts as an intermediary element between the display panel and the external environment, capturing leaked light and redirecting it back to the display area, thereby preventing direct light leakage while maintaining the thin profile
2Object-generated harmful factors
If a light guide member is added to prevent light leakage, then light leakage is reduced, but the device thickness increases
Solution Approach 1:
The light guide member is implemented as a thin film or sheet structure that can be laminated between the display panel and cover, providing light leakage prevention functionality while maintaining minimal thickness increase
Solution Approach 2:
The light guide member is integrated into the existing lamination structure of the display device, merging multiple functions (adhesion, light guiding, protection) into a single component that does not significantly increase overall 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
Effectively reduces or prevents light leakage, enhancing the visibility and reliability of thin display devices by refracting and reflecting leaking light back into the device.
Implementation Method 1
a light guide member between the cover member and the display panel, the light guide member including a base member including at least one recessed portion overlapping with the peripheral area, and a filling portion at the recessed portion... the filling portion may have a lower refractive index than that of the base member
Data Source
AI summary
A display device includes: a display panel divided into a display area and a peripheral area, the peripheral area being adjacent to the display area; a cover member on the display panel, the cover member being divided into a transmission area overlapping with the display area and a bezel area overlapping with the peripheral area; and a light guide member between the cover member and the display panel, the light guide member including a base member including at least one recessed portion overlapping with the peripheral area, and a filling portion at the recessed portion.