Light-Shielding Strip Layout for Precise Pixel Region Definition
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Solution Overview
Problem
Current lithography and etching processes face challenges in manufacturing high-resolution electronic devices, resulting in suboptimal quality of electronic devices.
Innovation Solution
The electronic device incorporates a first and second light-shielding strip disposed on substrates with overlapping regions, where the strips have different thicknesses in overlapping and non-overlapping areas, and color filter patterns are formed on the second light-shielding strip to create desired pixel regions with ideal contours.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional lithography and etching processes are used, then manufacturing simplicity is maintained, but manufacturing precision deteriorates for high-resolution products
Solution Approach 1:
The light-shielding structure is divided into multiple independent light-shielding strips disposed at different positions and orientations. Each strip can be independently formed and positioned, allowing precise definition of pixel regions without requiring complex single-step lithography patterns. The strips are segmented into first light-shielding strips on the first substrate and second light-shielding strips on the second substrate, enabling distributed control of light shielding functionality.
Solution Approach 2:
The patent transitions from planar 2D light-shielding patterns to a 3D multi-layer configuration with light-shielding strips at different heights and orientations. The strips extend in different directions (first direction and second direction) and create overlapping regions, adding dimensional complexity that enables precise pixel region definition beyond what conventional 2D lithography can achieve.
2Manufacturing precision
If multiple light-shielding strips with overlapping regions are used, then pixel region definition precision is improved, but device complexity increases
Solution Approach 1:
The complex light-shielding function is segmented into multiple simpler strip elements that can be independently manufactured and positioned. Each light-shielding strip is a simple linear structure, but their collective arrangement creates the complex pixel region boundaries. This segmentation allows each component to be manufactured using standard processes while achieving high overall precision.
Solution Approach 2:
Multiple light-shielding strips from different substrates are merged in space to create overlapping regions that precisely define pixel contours. The first light-shielding strips and second light-shielding strips combine their light-shielding functions, with their overlapping areas creating well-defined pixel region boundaries that neither set could achieve alone.
3Reliability
If varying thicknesses in overlapping and non-overlapping regions are implemented, then light-shielding performance is optimized, but manufacturing complexity increases
Solution Approach 1:
The light-shielding structure implements local quality variations where overlapping regions have different effective thickness than non-overlapping regions. This local differentiation optimizes light-shielding performance - thicker in overlapping regions for enhanced blocking, thinner in non-overlapping regions for structural efficiency. Each region's thickness is tailored to its specific functional requirements rather than using uniform thickness throughout.
Solution Approach 2:
The patent adds thickness as a third dimensional variable to optimize light-shielding performance. By varying the thickness of light-shielding strips in different regions (overlapping vs. non-overlapping), the design exploits the vertical dimension to control light transmission characteristics, creating a three-dimensional light-shielding architecture rather than simple 2D patterns.
Data Source
AI summary
An electronic device and a method for manufacturing the same are provided. The electronic device includes a first substrate, a second substrate disposed opposite to the first substrate, a first light-shielding strip disposed on the first substrate, a second light-shielding strip disposed between the first substrate and the second substrate and color filter patterns disposed on the second light-shielding strip. An overlapping region is the first light-shielding strip overlapping the second light-shielding strip and has a total thickness, a first non-overlapping region of the first light-shielding strip and a second non-overlapping region of the second light-shielding strip are outside the overlapping region, the second light-shielding strip in the second non-overlapping region has a thickness different from the total thickness. In a cross-section view, a part of the color filter patterns includes a convex portion corresponding to the first or the second light-shielding strip.