Linear Grid Layer for Self-Luminous Display Light Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Self-luminous display panels face low light efficiency due to high light reflection and absorption rates in polarizing and color filter layers, particularly the RGB dye layer, which reduces the transmission of light in non-necessary wavelength areas.
Innovation Solution
Incorporation of a linear grid layer between the substrate and the second electrode layer, with different pitches for red, green, and blue sub-pixels to polarize and filter light, formed by a metal or insulating layer, enhancing light transmission in specific polarization directions and wavelengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a polarizing layer and color filter layer are used in a self-luminous display panel, then light polarization and color filtering are achieved, but light efficiency decreases due to high reflection and absorption rates
Solution Approach 1:
The patent changes the structural parameters of the filter layer by introducing a grid pattern with specific pitch dimensions (P1, P2, P3) corresponding to different wavelengths. This parameter change allows selective transmission of light wavelengths while maintaining polarization functionality, thereby improving light efficiency without sacrificing color filtering performance.
Solution Approach 2:
The filter layer is segmented into a grid pattern with multiple openings arranged in rows and columns. This segmentation creates multiple light transmission paths and allows different regions of the grid to handle different wavelength ranges, reducing overall light loss while maintaining effective color filtering.
2Measurement precision
If an RGB dye layer is used for color filtering, then color separation is achieved, but light transmission in non-necessary wavelength areas is reduced
Solution Approach 1:
The patent replaces the conventional RGB dye layer with a grid structure where the pitch dimensions (P1, P2, P3) are specifically designed to correspond to the wavelengths of red, green, and blue light. This parameter-based approach maintains accurate color filtering while allowing broader light transmission compared to absorptive dye layers.
Solution Approach 2:
The patent substitutes the chemical absorption mechanism of RGB dye layers with a physical/structural filtering mechanism using grid patterns. This substitution replaces the need for wavelength-selective absorption with wavelength-selective transmission through precisely dimensioned openings, improving overall light efficiency.
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
Improves light efficiency by optimizing light transmission and polarization, allowing for better color filtering and emission in each sub-pixel, enhancing the overall display performance without the need for a backlight.
Implementation Method 1
a light emitting layer which is interposed between the first electrode layer and the second electrode layer, and generates light based on holes and electrons transmitted by voltages applied to the first electrode layer and the second electrode layer
Implementation Method 2
a linear grid layer which is interposed between the substrate and the second electrode layer, and includes linear grids arranged at a predetermined pitch in order to polarize and filter light generated by the light emitting layer and emitted through the substrate
Data Source
AI summary
A display apparatus having a self-luminous display panel is provided. The self-luminous display panel including: a first electrode layer; a second electrode layer; a substrate which is disposed on a light-emitting surface of the second electrode layer; a light emitting layer which is interposed between the first electrode layer and the second electrode layer, and generates light based on holes and electrons transmitted by voltages applied to the first electrode layer and the second electrode layer; and a linear grid layer which is interposed between the substrate and the second electrode layer, and including linear grids arranged at a predetermined pitch in order to polarize and filter light generated by the light emitting layer and emitted through the substrate.