Curved Liquid Crystal Display Panels for Uniform Seal Spacing
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Solution Overview
Problem
Existing liquid crystal display devices with curved surfaces face issues of stress-induced fluctuations in substrate spacing near seal materials, leading to display inconsistencies, which are not adequately addressed by reducing light leakage at corner portions.
Innovation Solution
A liquid crystal display panel design featuring substrates curved in a specific direction with at least one inflection point in the seal region, where tangent planes at the inner peripheral ends of the seal are parallel, ensuring equal stress distribution and mitigating substrate spacing fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the liquid crystal panel is curved to achieve a curved display surface, then the display shape adapts to installation locations and device designs, but stress is applied to the substrate causing spacing fluctuations near the seal material and display inconsistencies
Solution Approach 1:
The patent applies different curvature characteristics to different regions of the display panel. Specifically, the four corner portions are designed with less curvature than other regions, creating a non-uniform curvature distribution. This local differentiation allows the panel to maintain overall curved display surface while reducing stress concentration at corners, thereby preventing spacing fluctuations near seal materials and eliminating display inconsistencies.
2Object-affected harmful factors
If the curvature of the four corner portions is reduced to minimize light leakage, then light leakage is suppressed, but display inconsistencies along the seal material on non-curved sides cannot be sufficiently suppressed
Solution Approach 1:
The patent implements a differentiated curvature design where corner portions have smaller curvature values compared to central regions. This local quality variation serves dual purposes: it minimizes light leakage at corners while simultaneously reducing stress concentration that causes display inconsistencies along the seal material, thereby resolving both issues simultaneously.
3Adaptability or versatility
If the liquid crystal panel is curved to match device design and installation location, then the display adapts to various applications, but stress-induced spacing fluctuations occur near seal materials causing display inconsistencies
Solution Approach 1:
The patent employs a non-uniform curvature distribution where corner portions are designed with lower curvature than central areas. This local quality differentiation enables the panel to maintain adaptability to various installation locations and device designs while simultaneously preventing stress-induced spacing fluctuations, thus achieving both versatility and manufacturing precision.
Data Source
AI summary
A liquid crystal display panel includes a first substrate curved in a first direction, a second substrate curved in the first direction and facing the first substrate, a liquid crystal sandwiched between the first substrate and the second substrate, and a seal that adheres the first substrate and the second substrate to each other, and that seals the liquid crystal. When cross-sectionally viewing on a cross-section including the first direction and a display direction, a curved surface conforming to first main surface of the first substrate facing the second substrate includes at least one inflection point in a region surrounded by the seal, and tangent planes of the curved surface at each inner peripheral end of the seal are parallel to each other.