Organic Light Emitting Display Resin Transfer Pattern
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Solution Overview
Problem
The existing top emission type organic light emitting display devices face issues with aperture ratio and optical uniformity due to inaccuracies in the placement of light-blocking layers during the bonding process of substrates, leading to decreased image quality.
Innovation Solution
The implementation of a resin transfer pattern within the light-blocking layers that connects resin layers across adjacent pixels, ensuring uniform resin distribution and preventing light leakage, while maintaining the light-blocking functionality without reducing the aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the light-blocking layer is disposed on the bank to prevent light mixture, then light blocking function is improved, but the aperture ratio decreases due to process errors causing superposition on light-emitting layers
Solution Approach 1:
The invention divides the light-blocking layer into multiple segments: a first light-blocking layer disposed on the bank and a second light-blocking layer disposed on the color filter, with a resin layer between them. This segmentation allows each layer to perform light blocking independently without requiring precise alignment, thus preventing light mixture while maintaining aperture ratio.
Solution Approach 2:
The resin layer acts as an intermediary between the first and second light-blocking layers. It provides adhesive bonding while allowing each light-blocking layer to be positioned independently on their respective substrates, eliminating the need for precise alignment during substrate bonding and preventing superposition on light-emitting layers.
2Area of stationary object
If the light-blocking layer is accurately aligned on the bank, then aperture ratio is maintained, but manufacturing complexity increases due to precise alignment requirements
Solution Approach 1:
By segmenting the light-blocking function into two separate layers on different substrates, the invention eliminates the need for precise alignment during substrate bonding. Each light-blocking layer can be independently positioned, significantly reducing manufacturing complexity while maintaining aperture ratio.
Solution Approach 2:
The light-blocking layers are prepared on their respective substrates before bonding. The first light-blocking layer is formed on the bank of the first substrate, and the second light-blocking layer is formed on the color filter of the second substrate in advance, allowing independent optimization without alignment constraints during assembly.
3Strength
If resin layers are used to bond substrates, then adhesion is improved, but resin distribution uniformity decreases leading to optical non-uniformity
Solution Approach 1:
The invention applies different properties to different regions: the resin layer provides adhesion between substrates, while the light-blocking layers provide optical isolation. This local differentiation allows the resin to be optimized for bonding without compromising optical uniformity, as the light-blocking layers compensate for any resin distribution variations.
Data Source
AI summary
Discussed are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device can include first electrodes that are disposed on a substrate, organic light-emitting layers that are disposed on the first electrodes, banks that overlap edges of the first electrodes and define pixels, light-blocking layers that are disposed on the banks, and resin layers that are disposed between the light-blocking layers and include an adhesive material. A resin transfer pattern that penetrates each of the light-blocking layers from one side to the other side may be formed in the light-blocking layers. The resin layer disposed on one side of each of the light-blocking layers and the resin layer disposed on the other side of the light-blocking layer are connected to each other via the resin transfer pattern.