Dual Light Source Modules for Transflective Display Illumination
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Solution Overview
Problem
Transflective display panels face challenges in energy efficiency and display quality, as they consume power and affect image quality when ambient light is insufficient, and existing solutions do not adequately address the need for flexible light source configurations to meet diverse application requirements.
Innovation Solution
A display apparatus with two light source modules, one disposed on the display surface and the other on the back surface, utilizing light guide structures and light emitting devices to provide illumination and adjust color temperature, allowing for flexible configuration to meet different application needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transflective display panel uses a built-in back light source for auxiliary illumination when ambient light is insufficient, then display visibility is improved, but power consumption increases and display quality is affected
Solution Approach 1:
The patent divides the illumination function into two independent light source modules: a first light source module on the display surface for front illumination and a second light source module on the back surface for rear illumination. This segmentation allows selective activation of different light sources based on ambient light conditions, enabling the system to maintain display visibility while reducing power consumption by using only the necessary light source in each scenario.
Solution Approach 2:
The patent implements different illumination characteristics at different locations: the first light source module provides illumination with specific color temperature characteristics on the display surface, while the second light source module provides illumination with different characteristics on the back surface. This local differentiation allows optimization of illumination quality for specific usage scenarios, such as using the first light source for front-facing displays and the second light source for rear-facing displays, thereby improving overall energy efficiency.
2Illumination intensity
If a transflective display panel uses a built-in back light source for auxiliary illumination when ambient light is insufficient, then display visibility is improved, but display quality is affected
Solution Approach 1:
By segmenting the illumination system into two independent modules positioned at different locations, the patent enables selective illumination that preserves display quality. The first light source module can be activated for front illumination without affecting the back surface, and vice versa. This segmentation allows the system to maintain optimal display characteristics by using only the appropriate light source for the given usage scenario, avoiding the quality degradation associated with using a single back light source for all conditions.
Solution Approach 2:
The patent applies different illumination qualities to different locations: the first light source module provides illumination optimized for front-facing viewing with specific color temperature and intensity characteristics, while the second light source module provides illumination optimized for rear-facing viewing. This local quality differentiation ensures that display quality is maintained by using the appropriate illumination characteristics for the specific viewing direction and ambient conditions, rather than using a uniform back light source that compromises quality.
3Device complexity
If existing light source configurations are used, then device structure is simple, but adaptability to different application requirements is insufficient
Solution Approach 1:
The patent segments the light source system into two independent modules that can be selectively activated based on application requirements. This segmentation provides adaptability to different scenarios: the first light source module can be used for front-facing displays in low-light conditions, the second light source module can be used for rear-facing displays, or both can be used simultaneously for enhanced illumination. This modular approach maintains relative structural simplicity while significantly improving adaptability to diverse application requirements.
Solution Approach 2:
The patent creates a universal illumination system where both light source modules can serve multiple functions: providing auxiliary illumination in low-light conditions, adjusting color temperature for different usage scenarios, and enabling both front-facing and rear-facing display modes. This multi-functionality is achieved through the coordinated operation of the two light source modules, allowing a single display apparatus to adapt to various application requirements without requiring separate devices for each function.
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 enables efficient energy use and improved display quality by providing necessary illumination and color adjustment, meeting various application requirements through the combination of light source modules on the display apparatus.
Implementation Method 1
The first light guide structure has a first light incident surface and a first light exit surface... The first light source is disposed on a side of the first light incident surface of the first light guide structure
Data Source
AI summary
A display apparatus including a display panel, a first light source module, and a second light source module is disclosed. The display panel has a display surface and a back surface away from the display surface. The first light source module is disposed on a side of one of the display surface and the back surface of the display panel, and overlaps the display surface. The second light source module is disposed on a side of the other one of the display surface and the back surface of the display panel, and overlaps the display surface.