Display Device Partition Wall and Reflective Layer for Color Gamut
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Solution Overview
Problem
Conventional display devices face challenges in achieving superior color gamut and preventing color interference between adjacent pixels, which affects the overall display quality.
Innovation Solution
A display device design featuring a first substrate with a partition wall, a reflective layer, an organic layer with liquid repellency, and a wavelength conversion layer, along with a capping layer that transmits blue light and reflects green and red light, and a blue light-blocking filter to enhance color gamut and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional display device structure is used, then the manufacturing process is simpler, but the color gamut is inferior and color interference occurs between adjacent pixels
Solution Approach 1:
The display device is segmented into distinct functional layers: a reflective layer for light reflection, an organic layer with liquid repellency for boundary definition, and a wavelength conversion layer for color generation. The partition wall further segments the display into adjacent pixel regions. This segmentation allows each layer to perform its specific function optimally, achieving superior color gamut while maintaining manageable manufacturing complexity through modular assembly.
Solution Approach 2:
The organic layer with liquid repellency acts as an intermediary between the reflective layer and the wavelength conversion layer. It prevents color interference between adjacent pixels by repelling liquid crystal materials, thereby defining clear boundaries between pixels. This intermediary layer resolves the contradiction by enabling color separation without requiring complex structural modifications to the entire display device.
2Reliability
If the organic layer height is increased to prevent color interference, then color separation improves, but the manufacturing precision requirements increase
Solution Approach 1:
The organic layer is designed with liquid repellency as a key parameter change, transforming it from a passive structural layer to an active functional layer that dynamically repels liquid crystal materials. This parameter change allows the layer to achieve color separation through its chemical property rather than relying solely on precise height control, thereby reducing manufacturing precision requirements while maintaining effective color interference prevention.
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 effectively improves the color gamut and prevents color interference between pixels, resulting in enhanced display characteristics and quality.
Implementation Method 1
an organic layer which is disposed on the reflective layer to overlap the top portion and has liquid repellency
Implementation Method 2
a reflective layer which covers the top portion and the side portions
Implementation Method 3
a wavelength conversion layer which is disposed in the first space
Implementation Method 4
a capping layer which covers the organic layer and the wavelength conversion layer, wherein the capping layer may transmit blue light and reflect green light and red light
Data Source
AI summary
A display device and a method for manufacturing the same. A display device includes: a first substrate; a partition wall which is disposed on the first substrate to define a first space and includes a top portion and side portions extending from the top portion; a reflective layer which covers the top portion and the side portions; an organic layer which is disposed on the reflective layer to overlap the top portion and has liquid repellency; and a wavelength conversion layer which is disposed in the first space.