Curved Display Backlight Segmentation for Uniform Illumination
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Solution Overview
Problem
Curved or non-rectangular display devices face challenges with limited viewing angle, insufficient brightness, and non-uniform brightness compared to conventional flat panel displays.
Innovation Solution
The design incorporates a backlight module with a circuit board, light sources, diffuser plates, and optical films, including micro-structured films, to enhance viewing angle and brightness, and prevent non-uniform brightness issues, suitable for flat, curved, or irregularly shaped displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a curved or non-rectangular display device is designed, then aesthetic appearance and design flexibility are improved, but viewing angle becomes limited and brightness becomes insufficient or non-uniform
Solution Approach 1:
The backlight module is divided into multiple independent light source groups, each controlled separately. This segmentation allows different regions of the curved or non-rectangular display to receive optimized lighting, compensating for the non-uniform brightness distribution inherent in curved geometries.
Solution Approach 2:
Different regions of the display are provided with different lighting characteristics through the segmented light source groups. Each light source group is independently controllable to provide appropriate brightness levels for its specific region, ensuring uniform overall appearance despite the curved or irregular shape.
2Shape
If a curved or non-rectangular display device is designed, then aesthetic appearance and design flexibility are improved, but viewing angle becomes limited
Solution Approach 1:
The display is divided into multiple independently controllable light source groups, allowing each segment to be optimized for viewing from different angles. This enables the curved or non-rectangular display to maintain good viewing characteristics across multiple directions.
Solution Approach 2:
The backlight module employs dynamic control of individual light source groups, allowing the lighting characteristics to be adjusted in real-time based on viewing conditions. This dynamic adjustment compensates for the limited viewing angles caused by curved or irregular shapes.
3Device complexity
If conventional backlight design is used in curved displays, then device complexity is reduced, but brightness becomes insufficient
Solution Approach 1:
The backlight is segmented into multiple light source groups with independent control, allowing each group to be optimized for brightness in its specific region. This segmentation enables higher overall brightness without requiring a completely complex redesign of the entire backlight system.
Solution Approach 2:
The invention adjusts key parameters of the backlight system, including the number and distribution of light sources, their intensities, and control strategies. These parameter changes enhance brightness performance while maintaining reasonable device complexity.
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 increases the viewing angle and brightness while ensuring uniform illumination, addressing the limitations of conventional curved or non-rectangular display devices.
Implementation Method 1
The optical film includes a micro-structure, and the micro-structure faces the light sources
Implementation Method 2
The diffuser plate is disposed between the light sources and the display unit
Data Source
AI summary
A display device includes a display unit, and a backlight module. The display unit includes a display area and a peripheral area. The peripheral area surrounds the display area. The backlight module is disposed corresponding to the display unit. The backlight module includes a circuit board that has a surface. The circuit board includes a plurality of light emitting units, and a plurality of edge units.