OLED Display Panel Opening Zone Circular Polarizing Plate
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Solution Overview
Problem
Conventional circularly polarizing plates in AMOLED displays have low transmittance, leading to high power consumption and reduced OLED lifespan due to excessive current density and heating, which affects display performance under intense light conditions.
Innovation Solution
The introduction of opening zones in the circularly polarizing plate, specifically excavated in the projection areas corresponding to pixel regions, increases light transmittance by allowing 10%-60% of the projection area to be exposed, thereby reducing power consumption and current density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional circularly polarizing plate is attached to the display terminal, then reflectance rate is reduced and display performance under intense light is ensured, but light transmittance is only about 42% causing high power consumption and reduced OLED lifespan
Solution Approach 1:
The circularly polarizing plate is segmented into multiple regions: a first region corresponding to the pixel region with a first circularly polarizing plate having first transmittance, and a second region corresponding to the non-pixel region with a second circularly polarizing plate having second transmittance. This segmentation allows different transmittance characteristics in different areas, reducing overall power consumption while maintaining anti-reflection performance where needed.
Solution Approach 2:
Different regions of the circularly polarizing plate are assigned different optical properties (transmittance values) based on their functional requirements. The pixel region uses a circularly polarizing plate with higher transmittance to reduce power consumption, while the non-pixel region uses a circularly polarizing plate with lower transmittance to maintain display quality and reduce glare.
2Object-affected harmful factors
If a conventional circularly polarizing plate is attached to the display terminal, then reflectance rate is reduced and display performance under intense light is ensured, but OLED lifespan is reduced due to excessive current density and heating
Solution Approach 1:
The circularly polarizing plate is segmented into multiple regions: a first region corresponding to the pixel region with a first circularly polarizing plate having first transmittance, and a second region corresponding to the non-pixel region with a second circularly polarizing plate having second transmittance. This segmentation allows different transmittance characteristics in different areas, reducing overall power consumption and current density to extend OLED lifespan while maintaining anti-reflection performance where needed.
Solution Approach 2:
Different regions of the circularly polarizing plate are assigned different optical properties (transmittance values) based on their functional requirements. The pixel region uses a circularly polarizing plate with higher transmittance to reduce power consumption and current density, thereby extending OLED lifespan, while the non-pixel region uses a circularly polarizing plate with lower transmittance to maintain display quality.
3Ease of manufacture
If a circularly polarizing plate with uniform transmittance is used, then manufacturing is simplified, but light transmittance can be optimized only at about 42% causing excessive power consumption
Solution Approach 1:
The circularly polarizing plate is divided into multiple regions with different transmittance characteristics. The first circularly polarizing plate corresponds to the pixel region and has a first transmittance value, while the second circularly polarizing plate corresponds to the non-pixel region and has a second transmittance value. This segmentation enables optimized light transmission to reduce power consumption while maintaining manufacturability through region-based processing.
Solution Approach 2:
Different regions of the circularly polarizing plate are assigned different optical properties (transmittance values) based on their functional requirements. The pixel region uses a circularly polarizing plate with higher transmittance to reduce power consumption, while the non-pixel region uses a circularly polarizing plate with lower transmittance to maintain display quality.
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 solution enhances light transmittance, decreases power consumption by 25%-40%, and prolongs OLED lifespan by reducing current density and alleviating heat-related issues, while maintaining display performance under indoor and outdoor intense light.
Implementation Method 1
Extraneous light is turned to polarized light after passing through the circularly polarizing plate, and then becomes abnormally polarized light after being reflected by a reflection electrode of the OLED. As a result, it cannot pass through the circularly polarizing plate and into human eyes.
Implementation Method 2
an opening zone is within a projection area where a projection of each of the pixel regions on the circularly polarizing plate in a thickness direction of the display panel is located, and through the opening zone the corresponding sub-pixel sub-regions are exposed
Data Source
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AI summary
The present invention relates to an OLED display panel including: two substrates opposite to each other; a plurality of pixel regions disposed between inner sides of the two substrates and each comprising a blue sub-pixel sub-region, a green sub-pixel sub-region and a red sub-pixel sub-region; and a circularly polarizing plate disposed at an outer side of one of the substrates on a light outgoing side of the display panel; wherein, an opening zone is within a projection area where a projection of each of the pixel regions on the circularly polarizing plate in a thickness direction of the display panel is located, and through the opening zone the corresponding sub-pixel sub-regions are exposed. The present invention also relates to a method for manufacturing an OLED display panel and a display apparatus having the OLED display panel. With the technical solutions of the present invention, a transmittance of the circularly polarizing plate can be improved to reduce power consumption of the OLED, and thus of a whole display panel.