Reflective Member Light Blocking External Reflection Luminance
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Solution Overview
Problem
In display devices without a polarizing layer, increasing the area of the light blocking member to reduce external light reflection leads to decreased aperture ratio, luminance, and overall display quality.
Innovation Solution
Incorporating a reflective member and a support member between the light blocking member and the sub-pixel structure, allowing a larger amount of light emitted from the sub-pixel structure to be directed outside, thereby maintaining or improving luminance and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the area of the light blocking member is increased to reduce external light reflection, then the reflection of external light is reduced, but the aperture ratio and luminance of the light emitting layer are decreased
Solution Approach 1:
The reflective member converts the harmful reflected light that would otherwise be lost into a beneficial resource by redirecting it toward the viewer. The light blocking member reflects external light toward the reflective member, which then redirects this light to the viewer, transforming the harmful reflection into a beneficial effect that enhances display visibility without requiring increased aperture ratio
Solution Approach 2:
The reflective member is positioned specifically in the region surrounding the light emitting layer but not overlapping it, creating a localized functional zone. This allows the light blocking member to have a larger area for blocking external light while the reflective member locally redirects the reflected light to the viewer, maintaining luminance in the specific viewing direction without compromising the overall light blocking performance
2Object-affected harmful factors
If the area of the light blocking member is increased to reduce external light reflection, then the reflection of external light is reduced, but the display quality deteriorates
Solution Approach 1:
The reflective member transforms the harmful reflected light into a beneficial resource that enhances display quality. By redirecting the light blocked by the enlarged light blocking member toward the viewer, the system maintains high display quality while effectively reducing external light reflection
Solution Approach 2:
The display device employs a composite structure combining the light blocking member and the reflective member. The light blocking member (with large area) and the reflective member (with specific reflective properties) work together as a composite system, where each component performs its specific function and their combined effect achieves both reduced external light reflection and maintained display quality
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 use of a reflective member and a support member enables a significant increase in luminance and improves display quality by ensuring that a larger amount of light is emitted outside, even with a large area light blocking member.
Implementation Method 1
a reflective member disposed between the light blocking member and the sub-pixel structure, and the reflective member surrounds the sub-pixel structure and the first opening
Data Source
AI summary
A display device includes a substrate, a sub-pixel structure, a light blocking member, and a reflective member. A display area including a sub-pixel area is defined on the substrate. The sub-pixel structure is disposed in the sub-pixel area on the substrate. The light blocking member is disposed over the sub-pixel structure, and a first opening is defined in a portion of the light blocking member which overlaps the sub-pixel structure. The reflective member is disposed between the light blocking member and the sub-pixel structure, and the reflective member surrounds the sub-pixel structure and the first opening.