LCD Panel Spacer Layout for Blue Spot and Black Defect Resistance
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Solution Overview
Problem
Large LCD panels face issues with blue spots and black defects during stress tests, which are typically addressed by increasing the width of the black matrix and spacer size, reducing transmittance and competitiveness.
Innovation Solution
A display panel design where spacers are supported by data lines in different columns, avoiding contact with the display area and allowing for a reduced black matrix, thereby increasing opening ratio and resistance to pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the width of the black matrix and spacer size are increased to address blue spots and black defects, then the reliability is improved, but the transmittance deteriorates
Solution Approach 1:
The patent applies dimensionality change by transitioning from a planar black matrix structure to a three-dimensional spacer structure that extends vertically between the array substrate and opposite substrate. This vertical dimension allows the spacer to provide mechanical support and prevent defects without occupying horizontal space that would block light, thereby improving reliability while maintaining transmittance.
Solution Approach 2:
The patent extracts the defect-prevention function from the black matrix and relocates it to the spacer structure. By separating the black matrix from the defect prevention mechanism and using the spacer to bear mechanical stress and prevent blue spots and black defects, the design eliminates the need for an enlarged black matrix that would reduce transmittance.
2Strength
If the black matrix width is increased to improve pressure resistance, then the strength is improved, but the area occupied increases
Solution Approach 1:
The patent moves the pressure resistance function from the horizontal black matrix to the vertical spacer structure. The spacer extends in the thickness direction between substrates, providing mechanical strength and pressure resistance without occupying horizontal display area, thus improving strength while minimizing area occupation.
Solution Approach 2:
The spacer acts as an intermediary structure that mediates between the array substrate and opposite substrate, bearing mechanical stress and pressure forces. This intermediary role allows the system to achieve pressure resistance without requiring a larger black matrix, as the spacer absorbs and distributes mechanical loads.
3Stability of the object's composition
If the spacer size is increased to improve tolerance to liquid crystal fluctuations, then the stability is improved, but the transmittance deteriorates
Solution Approach 1:
The patent addresses liquid crystal stability by extending the spacer vertically between the substrates, creating a three-dimensional support structure that maintains uniform spacing and tolerates liquid crystal fluctuations without blocking light horizontally. This vertical dimension provides stability while preserving transmittance.
Data Source
AI summary
The present disclosure relates to the field of display technology and, more specifically, to a display panel and a display device. The display panel includes: an array substrate, an opposite substrate and a spacer. The array substrate includes: a first substrate, a plurality of rows of scan lines and a plurality of columns of data lines. The first substrate includes a plurality of sub-pixel areas, a first wiring area and a second wiring area. The plurality of rows of scan lines are formed on the first substrate and at least one row of the scan line is located in a first wiring area. The plurality of columns of data lines are formed on the first substrate and at least one column of the data line is located in a second wiring area.