Dual-Layer Display Panel for 3D Parallax Barrier Thickness Reduction
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Solution Overview
Problem
Current parallax barrier type 3D display devices face issues with thickness, resolution, and brightness, failing to meet consumer expectations, especially in consumer electronic products, due to increased thickness with larger display sizes and reduced resolution when switching to 2D mode.
Innovation Solution
A display panel with double-layer emission layers, where the first emission layer comprises first display pixels and the second emission layer comprises second display pixels with light-transmitting and light-shielding regions, allowing for both 2D and 3D display functions in a single panel, reducing thickness and enhancing brightness and resolution in 2D mode while maintaining controllability in 3D mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a parallax barrier type 3D display device uses a larger display size, then the 3D display function is improved, but the thickness of the device increases
Solution Approach 1:
The patent transitions from a conventional single-layer display structure to a multi-layer stacked structure, where the first emission layer and second emission layer are arranged in the thickness direction. This dimensional reorganization allows the light-transmitting regions to be positioned in the thickness direction rather than only in the planar area, enabling larger display areas without proportionally increasing thickness.
Solution Approach 2:
The patent implements a nested structure where the second emission layer is positioned on top of the first emission layer, with light-transmitting regions嵌套 (nested) within the overall display structure. The light-transmitting regions are integrated into the stacked layers, allowing the barrier structure to be embedded within the display panel itself rather than adding external thickness.
2Adaptability or versatility
If a parallax barrier type 3D display device switches to 2D display mode, then the display function is simplified, but the resolution decreases
Solution Approach 1:
The display panel is segmented into multiple independent emission layers, each capable of being controlled separately. The first emission layer and second emission layer can be driven independently or in combination, allowing the system to maintain high resolution in 2D mode by utilizing all pixel elements while enabling 3D mode by coordinating between layers. This segmentation prevents the resolution loss that occurs in conventional barrier-type displays when switching modes.
Solution Approach 2:
The dual-layer structure with light-transmitting regions serves multiple functions: it enables 3D display through parallax barrier effects while simultaneously maintaining full-resolution 2D display capability. The same physical structure supports both display modes without degradation, making the display system universal and adaptable to different viewing requirements.
3Illumination intensity
If a parallax barrier type 3D display device increases the number of light-transmitting regions, then the brightness in 2D mode is improved, but the 3D display quality deteriorates
Solution Approach 1:
Different regions of the display panel are assigned different functional qualities: light-transmitting regions are optimized for 2D brightness by allowing light passage, while light-shielding regions are optimized for 3D quality by blocking light to create sharp parallax barriers. This local differentiation of properties allows each region to excel at its specific function without compromising the other.
Solution Approach 2:
The patent resolves the brightness-quality tradeoff by organizing light-transmitting and light-shielding regions in the thickness direction through stacked emission layers, rather than only in the planar direction. This vertical arrangement allows for greater flexibility in optimizing the area and distribution of light-transmitting regions without compromising the precision of light-shielding barriers needed for 3D 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
The solution achieves reduced thickness and increased brightness and resolution in 2D mode while enabling effective 3D display functionality, addressing the limitations of current parallax barrier type 3D display devices.
Implementation Method 1
the first luminescent unit and the second luminescent unit are inorganic light-emitting diodes (LEDs) or organic light-emitting diodes (OLEDs)
Implementation Method 2
the first luminescent unit and the second luminescent unit are inorganic light-emitting diodes (LEDs) or organic light-emitting diodes (OLEDs)
Data Source
AI summary
A display panel, a driving method thereof, a manufacturing method thereof and a display device. The display panel includes a first emission layer (EML) and a second EML. The first EML includes a plurality of first display pixel, the first display pixels each include at least one first luminescent unit; the second EML is disposed at a light-emitting side of the first display pixels and includes a plurality of second display pixels, the second display pixels each include at least one second luminescent unit, the second EML includes light-transmitting regions and light-shielding regions alternately arranged in a row direction; the first display pixels and orthographic projections of the second display pixels on the first EML are partially overlapped and the first display pixels are partially exposed from corresponding light-transmitting regions; and the first and second display pixels have a same light-emitting direction.