Display Panel Bank Openings for High-Resolution Light Control
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Solution Overview
Problem
Existing display panel manufacturing processes are inefficient and result in suboptimal display quality, particularly in achieving high resolution.
Innovation Solution
The display panel incorporates an optical structure layer with specific bank openings and light control patterns, including a bank region defined by first, second, and third bank openings, and color filters emitting different wavelengths, enhancing manufacturing efficiency and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional manufacturing processes are used for display panels, then the manufacturing process is simpler, but the manufacturing efficiency is low and display quality is suboptimal
Solution Approach 1:
The optical structure layer is divided into multiple functional regions including bank openings, light control patterns, and color filter regions. Each region performs a specific function in light management, allowing for optimized manufacturing processes for each segment while maintaining overall system performance.
Solution Approach 2:
Different regions of the optical structure layer have different properties: bank regions for light blocking, light control patterns for wavelength conversion, and color filter regions for color separation. This local differentiation enables optimized manufacturing and improved display quality in each specific area.
2Manufacturing precision
If high resolution is achieved through increased pixel density, then display quality improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent introduces a vertical dimension with multiple layers including the optical structure layer, color filter layer, and light control patterns stacked above the substrate. This layered approach allows high-resolution pixel patterns to be achieved through vertical light control rather than solely through horizontal pixel density, reducing the precision burden on single-layer manufacturing.
Solution Approach 2:
The optical structure layer acts as an intermediary between the light-emitting elements and the color filters. It includes light control patterns that convert light wavelengths and bank structures that define pixel boundaries, serving as a mediating layer that simplifies the overall manufacturing process while enabling high resolution.
3Productivity
If conventional light control patterns are used, then the manufacturing process is simpler, but light transmission and conversion efficiency is lower
Solution Approach 1:
The light control patterns utilize quantum dots with specific size parameters to convert light wavelengths. By controlling the size and composition of quantum dots in different regions, the patent optimizes light conversion efficiency for red, green, and blue colors, achieving high light transmission efficiency through parameter optimization rather than structural complexity.
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 improves manufacturing efficiency and achieves higher resolution with enhanced display quality by optimizing light transmission and conversion.
Implementation Method 1
an optical structure layer that is disposed on the light-emitting element and transmits the source light or converts the source light into light of a different wavelength
Implementation Method 2
a color filter layer disposed on the light control layer. The color filter layer may include a first color filter overlapping the first bank region in a plan view, a second color filter overlapping the second bank region in a plan view, and a third color filter overlapping the third bank region in a plan view
Data Source
AI summary
A display panel includes a display element layer including a light-emitting element that outputs a source light and an optical structure layer on the light-emitting element and transmitting or converting the source light into light of a different wavelength. The optical structure layer includes a bank on the light-emitting element and having a first to third bank openings and a light control layer including a first to third light control patterns in the first to third bank openings. A first bank region defined by the first bank opening includes a first sub-region and a second sub-region protruding from the first sub-region in the first direction. A second bank region defined by the second bank opening includes a third sub-region and a fourth sub-region protruding from the third sub-region in a direction opposite to the first direction.