Stereo Display Subpixel Layout for Aperture Ratio and Moire Reduction
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Solution Overview
Problem
Conventional stereoscopic display devices with optical separating units suffer from 3D moire and reduced image quality due to limitations in pixel size reduction and aperture ratio, leading to suboptimal brightness uniformity and high-definition display capabilities.
Innovation Solution
The design incorporates a display element with subpixels arranged in a matrix, featuring optical distributors with specific orientations of gate and charging capacitor lines, and a driving method that inverts polarity every other line to enhance aperture ratio and brightness uniformity, thereby improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pixel size is reduced to improve display resolution, then high-definition display capability is achieved, but aperture ratio decreases leading to reduced brightness and image quality
Solution Approach 1:
The display panel is divided into multiple independent pixel regions with optimized internal structures. Each pixel is segmented into functional zones (light-emitting region, transistor region, capacitor region) arranged to maximize light output while maintaining resolution. The gate lines are also segmented into multiple scanning units that can be independently controlled.
Solution Approach 2:
The invention extends the solution from two-dimensional pixel arrangement to three-dimensional structural optimization. Capacitor electrodes are positioned in layered configurations above and below the pixel plane, and gate lines are arranged in multiple stacked layers, utilizing vertical space to improve both aperture ratio and addressing capability without reducing pixel pitch.
2Adaptability or versatility
If optical separating unit is added to provide multi-view-point or stereoscopic display, then 3D image capability is achieved, but 3D moire and brightness non-uniformity occur
Solution Approach 1:
Different regions of the display panel are optimized for different functions: central regions prioritize brightness uniformity for the viewer's focal area, while peripheral regions accommodate the optical separating unit structures. The gate line inclination angles are locally adjusted in different pixel columns to compensate for viewing angle-dependent brightness variations that cause 3D moire.
Solution Approach 2:
The invention dynamically adjusts display parameters including gate line inclination angles, capacitor electrode positions, and driving waveforms to compensate for 3D moire effects. By changing these parameters based on detected brightness non-uniformity, the system reduces 3D moire while maintaining stereoscopic capability.
3Ease of manufacture
If gate lines and charging capacitor lines are arranged orthogonally to optimize circuit layout, then manufacturing simplicity is achieved, but brightness non-uniformity and image quality degradation occur
Solution Approach 1:
The invention deliberately introduces asymmetry into the gate line arrangement by inclining gate lines at specific angles relative to the pixel columns rather than arranging them orthogonally. This asymmetric configuration compensates for the directional brightness non-uniformity caused by the optical separating unit, achieving both manufacturing feasibility and improved brightness uniformity.
Solution Approach 2:
The gate line inclination angles are designed to be dynamic rather than fixed, allowing adjustment during the addressing process. This enables the system to adapt to different viewing conditions and minimize brightness non-uniformity while maintaining simple circuit connectivity.
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 achieves a high aperture ratio and uniform brightness, reducing 3D moire and enhancing stereoscopic image quality while maintaining cost-effectiveness.
Implementation Method 1
an optical distributor for distributing light emitted from the first view point subpixel and second view point subpixel in a first direction, wherein the optical distributor has an optical axis parallel to a second direction orthogonal to the first direction
Data Source
AI summary
A subpixel is provided with a pixel electrode 4PIX, a pixel thin-film transistor 4TFT, and a charging capacitor electrode CS2. The charging capacitor electrode CS2 is formed in the same layer as a charging capacitor line CS and electrically connected to the charging capacitor line CS. A charging capacitor 4CS is mainly formed between the charging capacitor electrode CS2 and an electrode constituted by a silicon layer 4SI via an insulating film. One of the source and drain electrodes of a pixel thin-film transistor TFT is connected to a data line D via a contact hole 4CONT1 and the other is connected to a pixel electrode 4PIX via a contact hole 4CONT2.