Color Filter Pixel Layout for Low-Reflectance Display Emission
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Solution Overview
Problem
Display devices face challenges in reducing external light reflectance while maintaining luminous efficiency, particularly in the design of pixels with sub-emission areas and light-blocking patterns.
Innovation Solution
The display device incorporates a configuration with first and second sub-emission areas, light-emitting elements emitting a first color, and a light-blocking pattern with openings corresponding to these areas, along with color filters and a bank structure to optimize light emission and reduce reflectance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light blocking pattern is introduced to reduce external light reflectance, then reflectance is reduced, but luminous efficiency deteriorates due to blocked light emission
Solution Approach 1:
The pixel is divided into multiple sub-emission areas (first sub-emission area and second sub-emission area) that are spatially separated. The light blocking pattern is positioned between these sub-emission areas rather than covering the entire pixel, allowing light to emit from multiple discrete locations while blocking external light reflection from non-emission regions.
Solution Approach 2:
The light blocking pattern is selectively applied only in the region between sub-emission areas where light emission is not needed, rather than uniformly across the entire pixel. This localized approach blocks harmful external light reflection while preserving light emission quality from the sub-emission areas.
2Object-affected harmful factors
If sub-emission areas are spaced apart to reduce reflectance, then reflectance is reduced, but pixel area utilization deteriorates
Solution Approach 1:
The pixel structure transitions from a conventional single continuous emission area to multiple discrete sub-emission areas arranged in a spatial pattern. This dimensional reorganization allows the emission regions to be distributed across the pixel area, reducing reflectance from non-emission zones while maintaining effective use of the pixel footprint.
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
This configuration effectively reduces external light reflectance and enhances luminous efficiency by strategically placing light-emitting elements and color filters within the display device's pixel structure.
Implementation Method 1
a light blocking pattern on the first pixel to cover an area between the first sub-emission area and the second sub-emission area
Implementation Method 2
a first color filter including a plurality of first color filter patterns on the first and second sub-emission areas
Data Source
AI summary
A display device according to an embodiment of the present disclosure includes a first pixel including a first sub-emission area and a second sub-emission area that are spaced from each other, and first light-emitting elements in the first and second sub-emission areas, the first light-emitting elements being configured to emit light having a first color; a light blocking pattern on the first pixel to cover an area between the first sub-emission area and the second sub-emission area and including a plurality of openings respectively corresponding to the first and second sub-emission areas; and a first color filter including a plurality of first color filter patterns disposed on the first and second sub-emission areas.