Display Panel Bank Structure for Blue Pixel Crosstalk Control
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Solution Overview
Problem
Existing display panel manufacturing processes face challenges in enhancing display performance, particularly in minimizing lateral light leakage and improving luminance by effectively isolating light-emitting elements and preventing crosstalk between adjacent pixels.
Innovation Solution
The display panel design incorporates a bank layer with varying bank structures and color resistance modules, where the width of the bank structures adjacent to blue color resistance modules is greater than others, preventing lateral light leakage by limiting the passage of light through gaps and using light-absorbing materials to further reduce crosstalk, thereby enhancing display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform bank structures are used, then manufacturing is simpler, but lateral light leakage increases and display effect deteriorates
Solution Approach 1:
The patent applies local quality by making bank structure widths non-uniform: first bank structures adjacent to blue color resistance modules have a first width, while other bank structures have a second width. This localized variation optimizes light isolation specifically where blue light emission (which has shorter wavelength and higher energy) requires stronger containment, thereby reducing lateral light leakage and improving display effect without complicating the entire manufacturing process.
2Object-affected harmful factors
If bank structure widths are varied, then lateral light leakage is reduced, but manufacturing complexity increases
Solution Approach 1:
The variation in bank structure widths is applied locally only to specific positions (adjacent to blue color resistance modules) rather than throughout the entire display panel. This localized approach achieves effective light isolation where most needed while keeping the overall design relatively simple and manageable.
Solution Approach 2:
The patent introduces asymmetry by deliberately making bank structure widths different at different locations. The first bank structures have a first width while other bank structures have a second width, creating an asymmetric pattern that optimizes light isolation performance. This asymmetric design is driven by the specific optical properties of blue light emission and the need for enhanced containment in those regions.
3Object-affected harmful factors
If light isolation is enhanced, then crosstalk is reduced, but light transmission efficiency decreases
Solution Approach 1:
The enhanced light isolation is applied locally only where crosstalk is most problematic (adjacent to blue color resistance modules) rather than uniformly across all pixels. This localized enhancement achieves effective crosstalk reduction while minimizing the overall impact on light transmission efficiency, as most bank structures maintain their original dimensions.
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 design effectively reduces lateral light leakage and crosstalk, leading to improved display performance by isolating light-emitting elements and optimizing light transmission, resulting in enhanced luminance and reduced power consumption.
Implementation Method 1
using light-absorbing materials to further reduce crosstalk
Data Source
AI summary
Provided are display panel and display device. Display panel includes first substrate, second substrate, bank layer on side of first substrate facing second substrate, color resistance layer on side of first substrate facing second substrate, and light-emitting elements. Bank layer includes bank structures defining bank openings. Color resistance layer includes color resistance modules spaced apart. Color resistance modules is disposed in correspondence to bank openings and include blue color resistance module. Light-emitting elements is disposed in correspondence to bank openings. Projection of light-emitting element on first substrate does not overlap projection of bank structure on first substrate. Bank structures include first bank structure and second bank structure. Blue color resistance module adjacent to at least one first bank structure. Width of the first bank structure is greater than width of the second bank structure. Bank structures designed with different widths facilitate mitigating the crosstalk of laterally-leaked light, enhancing display effect.