Display Panel Brightness Uniformity via Local Quality Segmentation
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Solution Overview
Problem
Display panels with light sensing elements in a light sensing element setting region face issues of lower display brightness and affected display effects due to external ambient light transmission, as the display brightness is inconsistent between different regions.
Innovation Solution
Incorporating organic light-emitting units with varying areas and densities, and strategically placing quantum dot light-emitting units that do not overlap with organic light-emitting units, allowing for improved light transmittance and balanced display brightness across regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light sensing element setting region is configured to allow external ambient light transmission, then light sensing function is improved, but display brightness in that region becomes lower than normal display regions
Solution Approach 1:
The patent applies local quality by configuring different display region types (first display region with normal density, second display region with reduced density or larger pitch) in different areas of the display panel. The light sensing element setting region uses a different organic light-emitting unit configuration (lower density or larger pitch) to allow external light transmission, while normal display regions maintain higher density for optimal display brightness. This local differentiation resolves the contradiction by allowing the light sensing region to have lower display brightness while maintaining its light sensing function.
Solution Approach 2:
The patent segments the display region into multiple types: first display regions with normal organic light-emitting unit density, second display regions with reduced density or larger pitch, and light sensing element setting regions. This segmentation allows each region to be optimized for its specific function - normal regions for display quality, and light sensing regions for ambient light detection - thereby resolving the brightness uniformity issue while maintaining light sensing capability.
2Quantity of substance
If the area of organic light-emitting units is reduced or density is decreased in the light sensing element setting region, then light transmittance is improved, but display brightness uniformity across regions deteriorates
Solution Approach 1:
The patent implements local quality by creating distinct display region types with different organic light-emitting unit configurations. First display regions maintain normal density for optimal display performance, while second display regions and light sensing element setting regions use reduced density or larger pitch to enhance light transmittance. This localized differentiation allows each region to have optimized properties for its specific function, resolving the contradiction between light transmittance and display brightness uniformity.
Solution Approach 2:
The patent applies parameter changes by modifying the organic light-emitting unit configuration parameters (area, density, pitch) in different display regions. Specifically, the light sensing element setting region uses larger pitch or reduced density compared to normal display regions, which changes the optical parameters to allow greater external light transmission. This parameter differentiation resolves the contradiction by allowing controlled variations in light transmittance across different functional regions.
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 enhances display brightness uniformity, extends the service life of organic light-emitting units, and improves the overall display effect by compensating for brightness differences between regions without reducing light transmittance.
Implementation Method 1
each of the at least one quantum dot light-emitting unit emits light of a same color as at least one of the organic light-emitting units located in the second display region
Implementation Method 2
multiple organic light-emitting units are located in the display region on a first side of the substrate
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes a substrate and multiple organic light-emitting units located in the display region on a first side of the substrate, where an area of at least one of organic light-emitting units in the second display region is smaller than an area of each of organic light-emitting units with a same light-emitting color in the first display region, and/or, density of the organic light-emitting units in the first display region is greater than density of the organic light-emitting units in the second display region. The second display region includes at least one quantum dot light-emitting unit, which does not overlap the organic light-emitting units; and each of the at least one quantum dot light-emitting unit emits light of a same color as at least one of the organic light-emitting units located in the second display region.