Display Panel Light-Blocking Structure via Color Filter Stacking
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Solution Overview
Problem
Current display panels face challenges in achieving satisfactory contrast and aperture ratios due to misalignment of light blocking members, which increases manufacturing costs and decreases brightness, especially in curved displays.
Innovation Solution
The display panel design incorporates a light-blocking structure formed by overlapping color filters that display black through subtractive mixing, reducing the need for separate light blocking members and optical masks, and utilizes a spacer system to maintain panel alignment without requiring additional light blocking members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If separate light blocking members are used to block light leakage, then light blocking performance is improved, but manufacturing cost increases and aperture ratio decreases
Solution Approach 1:
The patent combines the light blocking function with the color filter structure by forming the light blocking member using the same black material as the color filter portions. This integration eliminates the need for separate light blocking members, reducing manufacturing complexity and cost while maintaining effective light blocking between adjacent pixels
Solution Approach 2:
The color filter structure serves dual functions: displaying colors in pixel areas and blocking light in non-pixel areas. The black material forms both the color filter portions and the light blocking member, allowing a single structure to perform multiple functions and reduce the need for additional components
2Object-affected harmful factors
If separate light blocking members are used to block light leakage, then light blocking performance is improved, but aperture ratio and brightness decrease
Solution Approach 1:
The light blocking function is merged into the color filter structure itself, eliminating the need for separate light blocking members that would occupy additional space and reduce the aperture ratio. The integration ensures that light blocking is achieved without compromising the pixel area available for light transmission
Solution Approach 2:
The light blocking is achieved through vertical stacking of color filter portions and light blocking portions in the same planar space, utilizing the thickness dimension rather than occupying additional lateral space. This allows light blocking without reducing the aperture ratio
3Manufacturing precision
If optical masks are used in manufacturing to position light blocking members, then alignment precision is improved, but manufacturing process complexity and cost increase
Solution Approach 1:
The light blocking member is formed as an integral part of the color filter structure through the same manufacturing steps, eliminating the need for separate alignment processes and optical masks. The combined structure ensures automatic alignment between color filter portions and light blocking portions
Solution Approach 2:
The light blocking member is formed simultaneously with the color filter portions during the same manufacturing process, rather than being added separately in a subsequent alignment step. This preliminary integration eliminates the need for complex alignment procedures
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 design enhances contrast and aperture ratios, reduces manufacturing costs, and simplifies the manufacturing process by eliminating the need for separate light blocking members and optical masks, while maintaining panel alignment effectively.
Implementation Method 1
The light-blocking structure may display a black color through subtractive mixing of colors of the first-color portion, the second-color portion, and the third-color portion.
Data Source
AI summary
A display panel may include the following elements: a substrate; a first-color filter, which overlaps the substrate and may include a first-color portion and a first-color part; a second-color filter, which may include a second-color portion and a second-color part; a third-color filter, which may include a third-color portion and a third-color part; a light-blocking structure, which may be positioned between the first-color part and the second-color part in a plan view of the display panel and may include the first-color portion, the second-color portion, and the third-color portion, wherein the first-color portion, the second-color portion, and the third-color portion are stacked in a direction perpendicular to the substrate.