Display Substrate Pixel Electrode Fringe Field Enhancement
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Solution Overview
Problem
The Middle-Com PLS liquid crystal display panel suffers from reduced light transmittance due to a weaker fringe field at pixel boundaries, which affects the overall display performance.
Innovation Solution
A display substrate design featuring a first and second pixel electrode configuration, where the second pixel electrode includes a sub-electrode that overlaps the data line and is electrically connected through a switching element, enhancing the fringe field at the pixel boundaries and improving light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a Middle-Com PLS structure is used to reduce power consumption, then power consumption is reduced, but light transmittance at pixel boundaries is reduced due to weaker fringe field
Solution Approach 1:
The pixel electrode is divided into two separate electrodes: a first pixel electrode and a second pixel electrode. The second pixel electrode includes sub-electrodes positioned at different locations to specifically enhance the fringe field at pixel boundaries while maintaining the overall PLS structure for power consumption reduction.
Solution Approach 2:
The second pixel electrode is strategically positioned and configured to create enhanced fringe fields specifically at pixel boundaries where the field was previously weak. This localized enhancement improves light transmittance at critical areas without affecting the overall power consumption benefits of the Middle-Com PLS structure.
2Use of energy by moving object
If the common electrode is formed under the pixel electrode with a small gap to reduce power consumption, then power consumption is reduced, but the fringe field at pixel boundaries becomes weaker
Solution Approach 1:
The pixel electrode system is segmented into first and second pixel electrodes, with the second electrode specifically configured to generate enhanced fringe fields at pixel boundaries, compensating for the reduced field strength caused by the small gap structure.
Solution Approach 2:
The second pixel electrode is asymmetrically positioned and configured relative to the first pixel electrode, with sub-electrodes strategically located to create non-uniform electric field distribution that enhances the fringe field specifically at pixel boundaries where it is most needed.
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 improved fringe field rotation of liquid crystal molecules at pixel boundaries increases light transmittance, enhancing display performance and reliability, even with shifts in the black matrix during manufacturing.
Implementation Method 1
a fringe field is formed between a common electrode and a pixel electrode, located on a thin film transistor substrate
Implementation Method 2
a gray scale is realized by horizontally aligning liquid crystal particles, using a fringe field
Data Source
AI summary
A display substrate includes a substrate, a gate line formed on the substrate, a data line formed on the substrate and crossing the gate line, a first pixel electrode formed on the substrate on which the gate and the data line are formed, an insulation layer formed on the substrate and the first pixel electrode, and a second pixel electrode formed on the insulation layer. The second pixel electrode includes a first sub-electrode that overlaps the first pixel electrode and the data line, and a second sub-electrode that is electrically connected to the data line through a switching element.