Offset Lens Display Panel for Near-Eye Brightness Uniformity
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Solution Overview
Problem
Near-eye display devices, such as virtual reality and augmented reality devices, face challenges in achieving uniform brightness due to the inefficiency of their optical path components, leading to low brightness and inconsistent image quality, especially outdoors.
Innovation Solution
A display panel design featuring a driving backplane with a central region and offset regions, where light-emitting modules are positioned with offset amounts increasing away from the central region, and converging lenses are used to adjust the light-emitting angle, matching the optical path components to enhance brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional display panels are used in near-eye devices, then the device structure is simple, but the brightness uniformity is poor and image quality is inconsistent
Solution Approach 1:
The patent applies local quality by dividing the display panel into different regions (central region and offset regions) with different light-emitting unit configurations. Each region has specifically designed offset amounts and directions tailored to its position, ensuring optimal brightness uniformity for each local area while maintaining overall image quality consistency.
Solution Approach 2:
The patent implements asymmetry through the offset arrangement of light-emitting units relative to the optical path components. The offset amounts and directions are asymmetrically distributed across different regions of the display panel, with light-emitting units positioned at calculated offsets from the optical path components to compensate for optical inefficiencies and achieve uniform brightness.
2Illumination intensity
If light-emitting units are positioned with offset amounts increasing away from the central region, then brightness uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-defining the offset amounts and directions for light-emitting units in different regions during the design phase. The offset parameters are determined in advance based on optical path analysis, allowing manufacturing processes to follow predetermined specifications rather than requiring complex real-time adjustments.
Solution Approach 2:
The patent implements parameter changes by systematically varying the offset amounts and directions of light-emitting units based on their positional parameters (distance from central region). The offset parameters are adjusted as a function of position, creating a graded transition that improves brightness uniformity while maintaining manufacturability through clear parameter relationships.
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 improves the uniformity of light emission and image brightness by adjusting the light-emitting angle of the display panel to match the optical path components, resulting in better image quality and increased luminous range, addressing the low brightness and inconsistency issues in near-eye display devices.
Implementation Method 1
one of the light-emitting units includes a light-emitting device and a converging lens distributed along a direction away from the driving backplane
Data Source
AI summary
A display apparatus, and a display panel and a manufacturing method therefor. The display panel includes a driving backplane and a plurality of light-emitting modules on one side of the driving backplane, the driving backplane is provided with a pixel region including a central region and n offset regions, and n is a positive integer. Each light-emitting module includes a plurality of light-emitting units, and each light-emitting unit includes a corresponding light-emitting device and a corresponding converging lens; in any light-emitting unit of an offset region, the center of a light-emitting device is offset to the side of the center of a converging lens away from the central region, so as to obtain an offset amount and an offset direction; the offset amounts of light-emitting units of a same offset region are the same; the offset directions of light-emitting units of a same light-emitting module are the same.