Curved Illuminating Device for Flexible Display Integration
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Solution Overview
Problem
Liquid crystal display devices with flat illuminating devices face design restrictions when integrating with complex, curved surfaces, limiting their versatility in portable and in-vehicle applications.
Innovation Solution
A planar illuminating device with a curved lightguide plate and mounted light sources on a flexible printed circuit board, allowing light to be emitted along a curved mounting line parallel to the incidence surface, maintaining efficient light distribution and thermal dissipation while accommodating curved display panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flat illuminating device is used, then the light distribution is efficient and thermal management is simple, but the device cannot be integrated with curved surfaces, limiting design flexibility
Solution Approach 1:
The patent applies curvature to the lightguide plate, transforming it from a flat structure to a curved one. The lightguide plate is formed with a curved emitting surface that matches the curvature of the display panel, enabling integration with curved surfaces while maintaining efficient light distribution through the curved geometry
Solution Approach 2:
The patent uses a flexible printed circuit board to mount the light sources, allowing the illumination assembly to conform to curved surfaces. The flexible substrate enables the rigid light sources to be positioned on a curved mounting line while maintaining electrical connections and structural integrity
2Adaptability or versatility
If light sources are arranged on a curved mounting line, then the illuminating device can accommodate curved display panels, but the light distribution uniformity and thermal dissipation efficiency may be compromised
Solution Approach 1:
The patent implements local quality by varying the arrangement and orientation of light sources along the curved mounting line. Light sources are positioned and oriented to account for local curvature variations, ensuring uniform light distribution across the curved emitting surface while maintaining thermal dissipation efficiency through localized heat sink configurations
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
Enables the integration of liquid crystal display devices with curved surfaces, enhancing design flexibility and maintaining light distribution and thermal management efficiency.
Implementation Method 1
a lightguide plate comprising a curved emitting surface, and an incidence surface comprising a side edge curved along the emitting surface
Implementation Method 2
a plurality of light sources which are mounted on the printed circuit board and emit light to the incidence surface
Data Source
AI summary
According to one embodiment, an illuminating device includes a lightguide plate including a curved emitting surface, and an incidence surface including a side edge curved along the emitting surface, a printed circuit board facing the incidence surface, and light sources mounted on the printed circuit board. Each light source includes a light-emitting center, a pair of connection terminals, and a central axis extending through the connection terminals and the light-emitting center. The light sources are arranged along a curved mounting line extending along the curved side edge of the incidence surface on the printed circuit board. The light-emitting centers are located on the mounting line, and the central axes are parallel to each other.