Birefringence Layer for Display Resolution
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Solution Overview
Problem
The challenge in increasing the resolution of organic light-emitting display panels is due to limitations in the accuracy of vapor deposition masks and alignment deviations, which restrict further enhancement of display resolution.
Innovation Solution
A display panel with a birefringence layer on the substrate, featuring alternating refractive regions with different refractive indexes, where the interface between these regions forms an acute angle with the display surface, allowing for the separation of optical paths and enhanced resolution through controlled polarization directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the arrangement density of organic light-emitting devices is increased to improve resolution, then the resolution of the display panel is improved, but the manufacturing precision deteriorates due to limitations of vapor deposition mask accuracy and alignment deviation
Solution Approach 1:
The patent introduces a birefringence layer that manipulates light in the optical dimension rather than relying solely on physical pixel arrangement. By creating refractive regions with different refractive indexes arranged in repeating units, the system generates multiple virtual images from single physical pixels, effectively increasing resolution without requiring proportionally higher manufacturing precision for pixel placement
Solution Approach 2:
The patent changes the optical parameters of the display system by introducing a birefringence layer with specific refractive index variations. The repeating units with different refractive indexes (n1 and n2) create optical path differences that generate virtual images, transforming the resolution enhancement approach from physical spacing to optical parameter manipulation
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 increases the perceived number of display pixels by shifting light-emitting positions, thereby improving the display resolution without the limitations of traditional methods.
Implementation Method 1
one of the plurality of repeating units in the first region may include at least two refractive regions that are sequentially arranged along the first direction. In one of the plurality of repeating units, refractive indexes of the at least two refractive regions may be different from each other
Implementation Method 2
a display panel. The display panel may include a display substrate and a birefringence layer disposed on a display surface of the display substrate
Data Source
AI summary
A display panel and a display apparatus are provided. The display panel includes a display substrate and a birefringence layer disposed on a display surface of the display substrate. The birefringence layer includes a first region; the first region is disposed at least in the display region; a plurality of repeating units are sequentially disposed in the first region along a first direction parallel to the display surface of the display substrate, and one repeating unit includes at least two refractive regions that are sequentially arranged along the first direction to form. Refractive indexes of the at least two refractive regions are different from each other. An interface between the at least two refractive regions forms an acute angle α with the display surface of the display substrate. A width of the repeating unit is smaller than a wavelength of light emitted from the display panel.