Light-Emitting Display Using Polarization Replacement for Color Filtering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of light emitting display apparatuses is complicated and costly due to the need for multiple mask processes to provide color filters on light emitting devices.
Innovation Solution
A polarization replacement layer is used to perform the functions of color filters, eliminating the need for separate color filters by integrating it into the array layer of the display apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color filters are provided on light emitting devices using multiple mask processes, then color filtering capability is achieved, but manufacturing process complexity increases
Solution Approach 1:
The patent merges the color filter function with the polarization replacement layer by forming the polarization replacement layer with the same pattern as the color filters. This integration eliminates the need for separate color filter formation processes, reducing manufacturing complexity while maintaining color filtering capability through the polarization replacement layer's selective light transmission properties
Solution Approach 2:
The polarization replacement layer is designed to perform multiple functions: it serves as both the polarization replacement layer and the color filter. By incorporating color filter materials into the polarization replacement layer structure, the same layer achieves both polarization management and color filtering functions, thereby simplifying the overall device structure and manufacturing process
2Reliability
If multiple mask processes are used to provide color filters, then color display quality is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines the color filter formation process with the polarization replacement layer formation process. By using the same mask pattern and deposition steps for both the polarization replacement layer and the color filters, the number of manufacturing steps is reduced, thereby lowering manufacturing costs while maintaining color display quality through the integrated layer's optical properties
3Reliability
If separate color filters are provided on light emitting devices, then color transmission is achieved, but device structure becomes more complex
Solution Approach 1:
The patent merges the color filter layer with the polarization replacement layer by forming them as an integrated structure. The polarization replacement layer is formed with the same pattern and material composition as the color filters, eliminating the need for separate color filter layers and simplifying the overall device structure while maintaining color transmission capabilities through the polarization replacement layer's selective optical properties
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
Simplifies the manufacturing process and reduces costs by eliminating the need for additional mask processes while maintaining color filtering capabilities.
Implementation Method 1
a polarization replacement layer provided inside the first dam
Data Source
AI summary
An aspect of the present disclosure is to provide a light emitting display apparatus in which a polarization replacement layer capable of performing functions of color filters is provided at an upper end of an array layer. The light emitting display apparatus includes an array layer including a display area in which color light is output and a non-display area surrounding the display area and a color filter layer provided on the array layer and transmitting color light transmitted from the array layer, wherein the color filter layer includes: a buffer provided on the array layer, a first dam provided on the buffer and provided outside a color display area corresponding to the display area, a polarization replacement layer provided inside the first dam, and a black matrix provided on the polarization replacement layer and provided in an area corresponding to a bank provided in the array layer.