Inclined Edge Light-Shielding Patterns for Display Devices
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Solution Overview
Problem
Light-emitting display devices experience light leakage due to light emitted from light-emitting devices being reflected by light-shielding components and re-reflected by reflective components, causing light to reach unintended lenses.
Innovation Solution
The display device incorporates a first and second light-shielding pattern in a non-open area, with at least one of the patterns having an inclined edge portion. This configuration prevents light from being reflected back to the light-emitting device or redirects it away from unintended lenses, thereby reducing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If light-shielding components are provided between lenses to block light, then light leakage is reduced, but light may be reflected back to light-emitting devices causing unintended light to reach other lenses
Solution Approach 1:
The light-shielding pattern is designed with an inclined edge portion that is asymmetric in shape. This asymmetric geometry causes light incident on the edge to be reflected at a specific angle away from the light-emitting device, preventing the reflected light from reaching adjacent lenses while maintaining effective light blocking.
Solution Approach 2:
The light-shielding pattern extends in the vertical dimension with an inclined edge portion that creates a three-dimensional light control mechanism. By utilizing the vertical inclination rather than just horizontal positioning, the design achieves directional light reflection control that prevents light leakage without causing harmful reflections.
2Ease of manufacture
If conventional light-shielding patterns with vertical edges are used, then manufacturing is simple, but light reflection causes deterioration of cut-off effect
Solution Approach 1:
The inclined edge portion introduces asymmetry to the otherwise symmetric light-shielding pattern. This asymmetric feature is easily integrated into existing manufacturing processes and directly improves the cut-off effect by controlling light reflection angles, achieving both ease of manufacture and enhanced reliability.
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 effectively minimizes light leakage and improves the cut-off effect in display devices requiring viewing angle control, while also optimizing energy consumption and production processes.
Implementation Method 1
light that is emitted from the light-emitting devices and travels to areas between the lenses is reflected by light-shielding components
Data Source
AI summary
A display device including a plurality of light-emitting devices is provided. The plurality of the light-emitting devices may be disposed on a substrate. A first insulating layer may be disposed on the plurality of light-emitting devices. Lenses may be disposed on the first insulating layer. The lenses may be disposed to respectively correspond to the plurality of light-emitting devices. A first light-shielding pattern may be disposed between the substrate and the first insulating layer. The first light-shielding pattern may be disposed to correspond to an area between the plurality of light-emitting devices. A second light-shielding pattern may be disposed on the first insulating layer. The second shielding pattern may overlap the first light-shielding pattern. The second light-shielding pattern may include a central portion and an edge portion disposed around the central portion. The edge portion may be inclined with respect to the central portion.