Curved LCD Pixel Electrode Misalignment Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Curved liquid crystal displays face misalignment issues between panels, leading to deteriorated luminance and image quality due to external curvature, which existing technologies fail to adequately address.
Innovation Solution
The design incorporates a pixel electrode with crossed stem parts, fine branch parts, and slits, where the pitch, width of fine slits, and fine branch parts are adjusted to gradually increase or decrease across misalignment regions, and the ratio of slit to branch part widths is varied to improve liquid crystal control, thereby reducing misalignment and enhancing luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the liquid crystal panel is curved by applying external force, then viewer immersion experience is improved, but misalignment between upper and lower panels occurs causing luminance deterioration
Solution Approach 1:
The patent applies local quality by creating different electrode structures in different regions of the display panel. Specifically, the pixel electrode includes both first electrode parts and second electrode parts with different configurations, allowing different regions to have different electrical characteristics that compensate for curvature-induced misalignment effects
Solution Approach 2:
The patent changes electrical parameters by applying different voltages to different electrode parts. The first electrode parts and second electrode parts are driven with different voltage levels, which allows dynamic adjustment of the liquid crystal alignment to compensate for the curvature effect and maintain uniform luminance across the display
2Area of stationary object
If the liquid crystal panel is curved, then large-sized display is achieved, but image quality deteriorates due to misalignment
Solution Approach 1:
The patent segments the pixel electrode into multiple parts (first electrode parts and second electrode parts) with different structures and functions. This segmentation allows independent control of different regions to compensate for curvature effects, thereby maintaining image quality in large-sized displays
Solution Approach 2:
Different regions of the display have locally optimized electrode structures. The first electrode parts and second electrode parts have different configurations tailored to their specific positions, enabling local compensation for curvature-induced image quality degradation across the large display area
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces misalignment and improves luminance by adjusting the control power of the liquid crystal layer across different misalignment regions, minimizing the occurrence of texture and luminance deterioration in curved liquid crystal displays.
Implementation Method 1
When a voltage is applied to the electrodes, an electric field is formed that rearranges liquid crystal molecules of the liquid crystal layer and control transmittance of light depending thereon
Implementation Method 2
a liquid crystal layer interposed therebetween. When a voltage is applied to the electrodes, an electric field is formed that rearranges liquid crystal molecules of the liquid crystal layer
Data Source
AI summary
A curved liquid crystal display includes a first panel having a pixel electrode including crossed stem parts, a plurality of fine branch parts extending from the crossed stem parts, and fine slits positioned between fine branch parts adjacent to each other, a second panel having a common electrode, and a liquid crystal layer between the first panel and the second panel. Misalignment between the first panel and the second lower panel is determined and a pitch, which is a sum of a width of the fine branch part and a width of the fine slit, gradually increases from a region having a small misalignment toward a region having a large misalignment.