Liquid Crystal Device Convex Electrode Lateral Field Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid crystal devices suffer from image quality deterioration due to lateral electric fields, which cannot be adequately suppressed by widening light shielding portions, leading to reduced light transmission and display issues.
Innovation Solution
A liquid crystal device configuration featuring a specific arrangement of light shielding members and a convex portion on the pixel electrode, where the orientation of liquid crystal molecules intersects both directions and the convex portion overlaps with light shielding members, reducing the impact of lateral electric fields and maintaining light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the width of the light shielding portion is widened to hide the disturbance in orientation caused by the lateral electric field, then the suppression of lateral electric field effect is improved, but the amount of displayed light is reduced
Solution Approach 1:
The patent applies local quality by creating a convex portion only at specific locations where the pixel electrode overlaps with the light shielding portion. This localized structural modification targets the problematic regions experiencing lateral electric field effects without requiring a global increase in light shielding width, thereby maintaining overall light transmission while providing localized suppression of orientation disturbance.
Solution Approach 2:
The patent introduces a third dimension by forming a convex portion that protrudes from the pixel electrode surface in the vertical direction. This dimensional change allows the pixel electrode to extend into the space above the light shielding portion, creating an overlapping region that suppresses lateral electric field effects without increasing the planar width of the light shielding structure, thus preserving light transmission area.
2Stability of the object's composition
If a convex portion is provided on the pixel electrode to suppress lateral electric field effects, then the orientation stability of liquid crystal molecules is improved, but the device structure becomes more complex
Solution Approach 1:
The patent merges the pixel electrode structure with the light shielding portion by creating a convex portion that integrates both functions. The convex portion serves dual purposes: it maintains the pixel electrode's electrical function while simultaneously creating the overlapping structure needed to suppress lateral electric field effects. This merging reduces the need for separate components and simplifies the overall device structure.
Solution Approach 2:
The convex portion of the pixel electrode serves multiple functions: it maintains electrical connectivity as part of the pixel electrode, creates the overlapping structure to suppress lateral electric fields, and defines the boundary for liquid crystal molecule orientation. This multi-functionality reduces the need for additional components and simplifies the device structure while achieving orientation stability.
3Object-affected harmful factors
If the pixel electrode is aligned with multiple light shielding members, then the suppression of lateral electric field is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies preliminary action by forming the convex portion of the pixel electrode to protrude toward the light shielding portion during the manufacturing process. This pre-formed convex structure serves as a built-in alignment guide that facilitates precise positioning of the pixel electrode relative to the light shielding members during assembly, reducing the stringency of alignment requirements compared to flat electrode structures.
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 suppresses the effects of lateral electric fields on image quality, ensuring high-quality display by minimizing disturbances in liquid crystal molecule orientation and maintaining light transmission.
Implementation Method 1
for the liquid crystal molecules, in a region provided with the pixel electrode in plan view, an orientation direction is set in a direction intersecting the first direction and the second direction and heading toward the intersection region
Implementation Method 2
even when an orientation of the liquid crystal molecules is disturbed due to an effect of a lateral electric field generated between adjacent pixel electrodes in the second direction
Data Source
AI summary
A liquid crystal device is provided with a first light shielding member, a second light shielding member, a third light shielding member, and a fourth light shielding member along an edge of a pixel electrode, and liquid crystal molecules intersect a first direction X and a second direction Y and are oriented toward a second intersection region between the third light shielding member and the fourth light shielding member. A convex portion extending along an end portion of the pixel electrode is provided at a lower layer side of the pixel electrode, and the pixel electrode overlaps with the convex portion in a region overlapping with the third light shielding member and the fourth light shielding member. The convex portion is separated from an adjacent pixel electrode in plan view, and is not linked to the convex portion that overlaps with the adjacent pixel electrode.