Display Panel Light Control Subunits for Aperture Ratio
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Solution Overview
Problem
Current OLED display technologies face challenges in maximizing aperture ratio and light extraction efficiency due to the integration of light control panels, which can reduce the effectiveness of light emission from sub-pixels.
Innovation Solution
A display panel design featuring a light control panel with sub-light control units that correspond one-to-one with sub-pixels, where the sub-light control units modulate light emitted from the display substrate, ensuring that the orthographic projection of their openings overlaps significantly with the sub-pixel openings, thereby optimizing light direction and extraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light control panel is integrated with the display substrate, then light direction and extraction can be controlled, but the aperture ratio and light emission effectiveness are reduced
Solution Approach 1:
The light control panel is divided into multiple sub-light control units, each corresponding to one or more sub-pixels. This segmentation allows independent control of light modulation for different regions while minimizing the overall area occupied by light control structures, thus preserving aperture ratio while achieving effective light extraction control.
Solution Approach 2:
The patent utilizes the vertical stacking dimension by placing the light control panel on the back surface of the display substrate, with light control units extending in the thickness direction. This dimensional transition allows light control functionality to be achieved without occupying lateral aperture space, as the light modulation occurs in the vertical path after light emission from sub-pixels.
2Illumination intensity
If sub-light control units are added to control light modulation, then light directionality is improved, but the structural complexity increases
Solution Approach 1:
The light control unit integrates multiple functional components including pixel electrodes, liquid crystal layers, and color conversion elements into a single stacked structure. This merging of functions into one integrated unit achieves light directionality and color control while reducing the number of separate components and simplifying the overall device architecture.
Solution Approach 2:
The light control unit is designed to perform multiple functions simultaneously: light modulation, color conversion, and directional control. By making each light control unit multi-functional, the patent reduces the need for separate dedicated components for each function, thereby managing structural complexity while achieving comprehensive light control.
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 enhances the aperture ratio and light extraction efficiency of the display panel by effectively directing and modulating light from the sub-pixels, reducing the impact of light control panel integration on light emission.
Implementation Method 1
the liquid crystal molecules are configured to be rotatable under an action of an electric field between the pixel electrode and the common electrode, to modulate the light emitted from the first opening
Implementation Method 2
organic light emitting diode (OLED) display products have the advantages of self-illumination
Data Source
AI summary
A display panel, a display device, and a display panel control method. In the display panel, the display substrate includes a first substrate and a plurality of sub-pixels; each sub-pixel has a first opening allowing for exiting of light for generating a display image; the light control panel is stacked on the display substrate and includes a plurality of sub-light control units; each sub-light control unit has a second opening; the plurality of sub-light control units are in one-to-one correspondence with the plurality of sub-pixels; the light exit from the first openings pass through the second openings of the sub-light control units and then exit from the display panel; the sub-light control units are configured to modulate light exit from the first openings; and the orthographic projection of the second opening of each sub-light control unit substantially coincides the orthographic projection of the first opening of the corresponding sub-pixel.