Display Panel Groove Structures for Squeeze Resistance
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Solution Overview
Problem
Current liquid crystal display (LCD) panels face challenges in achieving optimal squeeze resistance and aperture ratio, which affects their display performance and production complexity.
Innovation Solution
The proposed display panel design includes a first substrate with a planarization layer featuring groove structures and protrusion structures, and a second substrate with color film structures that overlap with the groove structures. This design enhances squeeze resistance and reduces light leakage by utilizing first and second support structures that contact the protrusion structures and maintain alignment with the groove structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the light-shielding layer is expanded outwards to improve squeeze resistance capability, then the squeeze resistance capability is improved, but the aperture ratio is reduced
Solution Approach 1:
The light-shielding layer is divided into multiple segments: a first light-shielding layer on the array substrate and a second light-shielding layer on the color film substrate, with a gap between them. This segmentation allows each layer to independently contribute to squeeze resistance while the gap preserves aperture ratio by allowing light transmission when not under pressure.
Solution Approach 2:
The light-shielding structure is extended into the thickness direction of the display panel, creating a three-dimensional structure. The first and second light-shielding layers are positioned at different substrates with a gap, utilizing the thickness dimension to provide squeeze resistance without blocking light in the normal viewing direction.
2Area of stationary object
If the support column opposite to the top is used to increase aperture ratio, then the aperture ratio is increased, but the difficulty of preparation process is increased and the structure of liquid crystal display panel needs to be improved
Solution Approach 1:
The first and second light-shielding layers serve multiple functions: they provide squeeze resistance capability, define the aperture structure, and eliminate the need for additional support columns. By making the light-shielding layer multi-functional, the patent avoids increasing structural complexity while maintaining aperture ratio.
3Reliability
If the light-shielding layer is expanded to improve squeeze resistance, then the risk of light leakage is reduced, but the aperture ratio is reduced
Solution Approach 1:
The light-shielding layer is segmented into first and second layers positioned at different substrates with a gap between them. This segmentation prevents light leakage by providing shielding at both substrates while the gap maintains aperture ratio by allowing light transmission in the non-squeezed state.
Solution Approach 2:
The light-shielding structure utilizes the thickness direction by positioning light-shielding layers on both the array substrate and color film substrate. This three-dimensional arrangement provides comprehensive light leakage prevention while preserving aperture area through the gap configuration.
Data Source
AI summary
Provided are a display panel and a display device. The display panel includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate. The first substrate is provided with a planarization layer. A surface of a side of the planarization layer facing the liquid crystal layer is provided with multiple groove structures and a protrusion structure located between adjacent groove structures, the second substrate is provided with color film structures which are arranged at intervals, and a color film structure at least partially overlaps with a groove structure in a thickness direction of the display panel. Multiple first support structures are disposed between the first substrate and the second substrate, and a first support structures and the planarization layer are disposed at intervals in the thickness direction of the display panel.