Light Guide Plate Protrusions Prevent Optical Sheet Scratching
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Solution Overview
Problem
In display devices, the light guide plate is prone to scratching due to its relatively low rigidity compared to the optical sheet, which can lead to damage and affect image visibility.
Innovation Solution
The light guide plate features a flat portion with protrusions on its upper surface, creating a space between the optical sheet and the flat regions, reducing the likelihood of scratching when the components move relative to each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical sheet is directly arranged on the light guide plate, then the optical sheet can improve optical characteristics of the light, but the light guide plate is prone to scratching due to its lower rigidity compared to the optical sheet
Solution Approach 1:
The patent introduces a protrusion structure on the light guide plate that acts as an intermediary element between the optical sheet and the light guide plate surface. This protrusion creates a mechanical buffer that prevents direct contact and rubbing between the rigid optical sheet and the softer light guide plate, thereby eliminating the scratching problem while maintaining the optical enhancement function of the optical sheet
Solution Approach 2:
The protrusion structure is designed in advance on the light guide plate to provide cushioning protection. By creating a physical barrier and spacing structure before any relative movement occurs between components, the design preemptively prevents scratching damage that would otherwise occur during assembly or operation when the rigid optical sheet contacts the lighter light guide plate
Data Source
AI summary
A display device includes a display panel including a display area and a non-display area; a light guide plate which guides light to the display panel, including: an upper surface including a first area overlapped with the display area and a second area which is disposed adjacent to the first area and overlapped with the non-display area, a lower surface facing the upper surface, a side surface connecting the upper surface and the lower surface to each other, and a plurality of protrusions arranged at the upper surface to be disposed in the second area of the upper surface; a light source which generates and provides the light the side surface of the light guide plate; and an optical sheet between the display panel and the upper surface of the light guide plate, contacting the protrusions in the second area, and spaced apart from the first area.