Curved Display Backlight Scattering for Uniform Illumination
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Solution Overview
Problem
Curved surface display devices face challenges in maintaining display quality due to the curvature of the display panel and backlight unit, leading to reduced three-dimensional effect, sense of immersion, and presence of the image.
Innovation Solution
A display device comprising a display panel with a first radius of curvature and a backlight unit with a second radius of curvature, featuring light sources arranged in a matrix form and scattering units between them, with specific relational formulas governing the distance and thickness relationships to optimize light distribution and reduce dark areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light sources are arranged in a matrix form with scattering units between them, then light distribution is improved and dark areas are reduced, but device complexity increases
Solution Approach 1:
The backlight unit is segmented into multiple light sources arranged in a matrix form, with scattering units positioned between them. This segmentation allows for more precise control of light distribution across the display panel, reducing dark areas while maintaining overall illumination uniformity.
Solution Approach 2:
Scattering units are introduced as intermediary elements between the light sources and the display panel. These scattering units diffuse and redirect light paths, effectively improving light distribution and eliminating dark areas without requiring additional light sources or complex optical systems.
2Reliability
If scattering units are disposed between light sources, then display quality is maintained, but manufacturing precision requirements increase
Solution Approach 1:
Scattering units are strategically positioned at specific locations between light sources rather than uniformly distributed. This local quality approach targets areas where light distribution needs improvement, maintaining display quality while reducing the overall number of scattering units and associated manufacturing precision requirements.
Solution Approach 2:
Instead of placing scattering units between all possible light source combinations, the invention uses partial action by positioning scattering units only at critical locations where they most effectively improve light distribution. This reduces manufacturing complexity while achieving the desired display quality.
3Device complexity
If the number of scattering units is smaller than the number of light sources, then device complexity is reduced, but light distribution uniformity may worsen
Solution Approach 1:
The arrangement of scattering units follows an asymmetric pattern based on the light source matrix configuration. Scattering units are positioned to compensate for specific light distribution deficiencies rather than following a symmetric uniform pattern, achieving good light uniformity with fewer scattering units.
Solution Approach 2:
The invention addresses light distribution uniformity by introducing scattering units at multiple vertical levels and positions between light sources, utilizing three-dimensional spatial arrangement rather than simple two-dimensional uniform distribution. This allows fewer scattering units to achieve better light uniformity.
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 effectively maintains display quality by ensuring adequate light distribution and reducing dark areas, thereby enhancing the three-dimensional effect and sense of immersion in curved surface displays.
Implementation Method 1
The backlight unit includes a plurality of light sources and a plurality of scattering units. The light sources emit the light and the scattering units scatter at least a portion of the light.
Data Source
AI summary
A display device includes a display panel and a backlight unit. The display panel receives a light to display an image and has a first radius of curvature. The backlight unit is disposed under the display panel to provide the light to the display panel and has a second radius of curvature. The backlight unit includes a plurality of light sources and a plurality of scattering units. The light sources emit the light and the scattering units scatter at least a portion of the light.