Display Panel Frame Support Structure for Uniform Cell Thickness
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Solution Overview
Problem
Conventional display panels experience poor display issues, such as yellow display, near the frame area due to inconsistent support column designs and high signal wiring densities, leading to uneven cell thickness and reduced display quality.
Innovation Solution
A display panel design featuring first main support columns and auxiliary support columns in the frame area, where the length of the first main support column is greater than the auxiliary support column, and the second substrate has varying surfaces to create a concave area for the first main support column, ensuring uniform cell thickness and improved support between substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the first main support column with greater length is provided in the frame area, then the thickness uniformity of the display panel is improved, but the device complexity increases due to multiple support column types and varying substrate surfaces
Solution Approach 1:
The patent applies local quality by differentiating support column designs for different regions: the first main support column is specifically designed for the frame area with greater length to compensate for larger cell thickness, while other areas use standard support columns. This localized adaptation ensures uniform overall thickness without requiring complete redesign of the entire support structure.
Solution Approach 2:
The support structure is segmented into multiple types: first main support columns in the frame area, and other support columns in display areas. This segmentation allows each component to be optimized for its specific functional requirements, resolving the contradiction between uniformity and complexity by making the complexity localized rather than universal.
2Manufacturing precision
If the second substrate has varying surfaces with different heights to create concave areas, then the cell thickness uniformity is improved, but the manufacturing difficulty increases
Solution Approach 1:
The second substrate is designed with local quality variations: a concave area (first surface at lower height) specifically positioned in the frame area to accommodate the longer first main support column, while other areas maintain standard surface height. This localized surface variation achieves thickness uniformity without requiring complete redesign of the entire substrate.
Solution Approach 2:
The concave area structure is pre-formed on the second substrate before assembly, creating the height difference in advance. This preliminary action simplifies the overall manufacturing process by preparing the substrate geometry beforehand, avoiding complex adjustments during final assembly.
3Reliability
If multiple types of support columns with different lengths are arranged in the frame area, then the display quality near the frame area is improved, but the device complexity increases
Solution Approach 1:
Different support column types are assigned to different locations: first main support columns (longer) are placed in the frame area where larger cell thickness occurs, while standard support columns are used in display areas. This local quality differentiation improves display quality in critical frame areas without requiring all support columns to be complex.
Solution Approach 2:
The support column system is segmented into functionally distinct types based on location requirements. This segmentation allows the complexity to be concentrated only where needed (frame area support columns) while keeping other areas simple, resolving the contradiction between reliability and overall device complexity.
Data Source
AI summary
A display panel and a display device are provided. A first main support column and an auxiliary support column are provided between the first substrate and the second substrate in the frame area, and a length of the first main support column is greater than a length of the auxiliary support column. The second substrate includes the base, and further includes the first surface and the second surface located on a side of the second substrate facing the first substrate in the frame area. A height from the second surface to the base is greater than a height from the first surface to the base. An orthographic projection of the first main support column on the base is located within an orthographic projection of the first surface on the base.