LCD Pixel Unit UV Absorption Pattern for Color Shift
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional LCD panels experience color shift and reduced display quality at large viewing angles due to the inability of liquid crystal molecules to maintain different arrangements, leading to changes in display brightness and aperture ratio, which is exacerbated by the need for additional transistors or capacitors.
Innovation Solution
A pixel unit design incorporating an ultraviolet light (UV) absorption pattern between substrates to create alignment areas with different pre-tilt angles for liquid crystal molecules, allowing for varied display brightness compensation without increasing complexity or reducing aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an extra capacitor is disposed in a single pixel unit to resolve color shift, then color shift problem is resolved, but display quality is reduced due to RC delay effect
Solution Approach 1:
The patent applies local quality by creating different pre-tilt angles for liquid crystal molecules in different regions of the same pixel unit. Specifically, a first alignment area with a first pre-tilt angle and a second alignment area with a second pre-tilt angle are formed within the pixel unit, allowing local differentiation of molecular orientation to compensate for color shift without adding external components like capacitors.
2Ease of manufacture
If an additional transistor is disposed in each pixel unit to resolve color shift, then color shift problem is resolved, but device complexity is increased and display aperture ratio is reduced
Solution Approach 1:
The patent implements local quality by dividing the pixel unit into multiple alignment areas with different pre-tilt angles. This allows the existing transistor to control different liquid crystal regions differently, eliminating the need for additional transistors while maintaining color shift compensation capability and preserving display aperture ratio.
Solution Approach 2:
The patent applies segmentation by dividing the liquid crystal layer into distinct alignment areas (first alignment area and second alignment area) with different pre-tilt angles. This segmentation allows a single transistor to control multiple regions with different characteristics, avoiding the need for additional transistors for each region.
3Ease of manufacture
If an additional transistor is disposed in each pixel unit to resolve color shift, then color shift problem is resolved, but display aperture ratio is reduced
Solution Approach 1:
The patent applies local quality by creating different pre-tilt angles for liquid crystal molecules in different regions of the same pixel unit. Specifically, a first alignment area with a first pre-tilt angle and a second alignment area with a second pre-tilt angle are formed within the pixel unit, allowing local differentiation of molecular orientation to compensate for color shift without adding external components like capacitors.
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
The UV absorption pattern enables liquid crystal molecules to present different pre-tilt angles, reducing color shift at wide viewing angles while maintaining a high display aperture ratio and simplifying the driving circuit, thus improving display quality.
Implementation Method 1
at least one ultraviolet light (UV) absorption pattern... The UV absorption pattern is disposed between the first substrate and the second substrate
Data Source
AI summary
A pixel unit having a display area is provided. The pixel unit includes a first substrate, a second substrate, a liquid crystal layer, and at least one ultraviolet light (UV) absorption pattern. The second substrate is disposed in parallel to the first substrate, and the liquid crystal layer is disposed between the first substrate and the second substrate. The UV absorption pattern is disposed between the first substrate and the second substrate. A part of the display area overlaps the UV absorption pattern to define at least one first alignment area, while the part of the display area which does not overlap the UV absorption pattern defines at least one second alignment area. The liquid crystal molecules of the liquid crystal layer present different pre-tilt angles in the first alignment area and the second alignment area.