Light Source Module Segmentation for Display Energy Reduction
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Solution Overview
Problem
Large display devices face challenges with energy consumption due to the need for extensive light source modules, particularly in non-self-luminescent displays like liquid crystal displays, which require significant energy to provide a planar light source.
Innovation Solution
A display device and light source module configuration that includes both first and second light-emitting components, where the first components do not use wavelength-converting materials and the second components do, allowing for efficient energy use and improved color display quality by combining their light sources to achieve a white light output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a planar light source occupying a large area is used to provide display light for large display panels, then the display area is covered adequately, but the energy consumption increases significantly
Solution Approach 1:
The patent divides the light source module into multiple independent light-emitting components (first and second light-emitting components) that can be selectively activated. Instead of using a single large-area light source that consumes high energy, the display device segments the illumination function across multiple smaller components, allowing efficient coverage of large display areas while reducing overall energy consumption through selective operation.
2Illumination intensity
If wavelength-converting materials are used in light-emitting components, then color display quality is improved, but energy conversion efficiency decreases
Solution Approach 1:
The patent applies different structural configurations to different light-emitting components within the same module. Specifically, first light-emitting components exclude wavelength-converting materials for high efficiency, while second light-emitting components include wavelength-converting materials for superior color quality. This local differentiation allows each component to be optimized for its specific function, balancing overall energy efficiency with color display performance.
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 reduces energy consumption while maintaining high color display quality, with the option to selectively use either component or both to meet energy and color requirements, achieving up to 85% NTSC color gamut coverage and meeting market standards.
Implementation Method 1
The at least one first light-emitting component includes at least one first electroluminescent structure. The at least one second light-emitting component includes a second electroluminescent structure
Implementation Method 2
The at least one second light-emitting component includes a wavelength-converting material
Data Source
AI summary
The disclosure provides a display device including a display panel and a light source module. The light source module is arranged on one side of the display panel and provides a display light source to the display panel. The light source module includes a first light-emitting component and a second light-emitting component. The first light-emitting component includes a first electroluminescent structure. The second light-emitting component includes a second electroluminescent structure. The second light-emitting component includes a wavelength-converting material, while the first light-emitting component does not include any wavelength-converting material. The display device is able to provide an ideal light source without consuming significant energy.