Display Substrate Supporting Structure with Curved Spacer Containment
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Solution Overview
Problem
In liquid crystal display (LCD) panels, the spacer's flat contact surface with the supporting structure can cause the spacer to slide out, leading to light leakage and a reduced pixel aperture ratio, especially as product resolution increases.
Innovation Solution
A display substrate design featuring a supporting structure with a concave portion that limits the spacer's sliding, combined with a planarization layer and light-shielding structures to prevent light leakage and improve pixel aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flat contact surface between the spacer and supporting structure is used, then the manufacturing process is simple, but the spacer slides out causing light leakage and reduced pixel aperture ratio
Solution Approach 1:
The supporting structure is designed with a curved surface instead of a flat surface. The curved surface includes a first curved surface and a second curved surface that are arc-shaped and extend in different directions, creating a bowl-like configuration that prevents spacer sliding while maintaining manufacturing feasibility.
Solution Approach 2:
The invention transitions from a two-dimensional flat contact surface to a three-dimensional curved surface structure. The curved surface extends in multiple directions with arc-shaped profiles, adding dimensional complexity that prevents spacer sliding while controlling overall structure complexity.
2Reliability
If the supporting structure height is increased to prevent spacer sliding, then spacer stability improves, but light leakage increases due to larger via hole requirements
Solution Approach 1:
The curved surface configuration of the supporting structure allows it to contain the spacer through geometric constraint rather than relying solely on increased height. The arc-shaped first and second curved surfaces create a bowl-like structure that mechanically prevents spacer sliding while maintaining a compact profile that minimizes light leakage.
Solution Approach 2:
The supporting structure features localized curved surfaces (first curved surface and second curved surface) at specific regions where spacer containment is needed, rather than uniformly increasing the entire structure's height. This localized approach provides effective spacer stability while minimizing the overall footprint and light leakage risk.
Data Source
AI summary
The present disclosure provides a display substrate, a display panel and a display apparatus. The display substrate includes a first base substrate; a plurality of gate lines and a plurality of data lines which are arranged on a side of the first base substrate; the plurality of gate lines and the plurality of data lines are arranged to be intersected with each other and insulated from each other; a planarization layer, arranged on a side of the gate lines and the data lines away from the first base substrate, and including a first via hole; and a supporting structure, arranged on a side of the planarization layer away from the first base substrate and filled into the first via hole; and in a direction perpendicular to the first base substrate, a height of the supporting structure is greater than a depth of the first via hole.