OLED Panel Filling Layer to Reduce Light Crosstalk
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Solution Overview
Problem
OLED display devices using polarizers face issues with low light transmittance, high power consumption, and brittleness, which hinder the development of dynamic bending products, and PFS technologies suffer from rapid large-viewing-angle brightness attenuation and light crosstalk.
Innovation Solution
An organic light emitting display panel with a transparent filling layer between the array substrate and the color filter substrate, reducing light deflection and light crosstalk, and optimizing the thickness and design of the color filter and encapsulation layers to enhance light transmittance and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polarizers are used to improve contrast and achieve integral black effect, then reflection intensity of ambient light is reduced, but light transmittance decreases to about 44% and power consumption increases
Solution Approach 1:
The patent removes the polarizer component from the display structure entirely, replacing it with a polarizer-free solution that uses color filters and black matrixes to achieve the desired optical effects without the light-blocking properties of polarizers
Solution Approach 2:
The patent changes the optical parameters of the display by adjusting the refractive index of the filling layer and optimizing the structure of color filters and black matrixes to achieve high contrast and integral black effect without relying on polarizers
2Object-affected harmful factors
If polarizers are used to reduce ambient light reflection, then contrast is improved, but light transmittance decreases and thickness increases
Solution Approach 1:
The patent extracts and removes the polarizer layer from the display stack, eliminating its thickness contribution while maintaining the contrast enhancement function through alternative optical structures
Solution Approach 2:
The patent employs thin film structures for color filters and black matrixes that provide the necessary optical filtering functions with minimal thickness, enabling flexible and thin display designs
3Use of energy by moving object
If PFS technology with color filters is used to replace polarizers, then light transmittance increases to 80% and thickness is reduced, but large-viewing-angle brightness attenuation and light crosstalk occur
Solution Approach 1:
The patent introduces a filling layer with specific refractive index between the substrate and color filter structure, acting as an optical intermediary that controls light propagation paths and reduces crosstalk between adjacent pixels while maintaining high transmittance
Solution Approach 2:
The patent applies different refractive index materials in different regions of the display structure, particularly in the filling layer and interface regions, to locally control light behavior and minimize crosstalk in critical areas
4Use of energy by moving object
If PFS technology with color filters is used to replace polarizers, then light transmittance increases to 80%, but large-viewing-angle brightness attenuation occurs
Solution Approach 1:
The patent optimizes the refractive index parameter of the filling layer and the structural parameters of color filters to control light extraction and viewing angle characteristics, maintaining high brightness across wide viewing angles while preserving high light transmittance
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 improves light transmittance, reduces power consumption, and minimizes large-viewing-angle brightness attenuation and light crosstalk, enhancing the optical performance and flexibility of OLED display devices.
Implementation Method 1
the transparent filling layer is disposed in a gap between the array substrate and the color filter substrate for reducing light deflection
Data Source
AI summary
The present disclosure provides an organic light emitting display panel and an organic light emitting display apparatus. The organic light emitting display panel includes an array substrate, a color filter substrate and a transparent filling layer; the array substrate includes a substrate and an organic light emitting layer and a thin film encapsulation layer sequentially formed on the substrate, and the color filter substrate includes a cover plate and a color filter layer and an organic protective layer sequentially formed on the cover plate; the array substrate and the color filter substrate are disposed opposite to each other, the organic light emitting layer includes a plurality of OLED pixel units, the color filter layer includes a plurality of color-resist units; wherein, the transparent filling layer is disposed in a gap between the array substrate and the color filter substrate for reducing light deflection.