Reflective Display Screen with Compensation Light Source for Low Ambient Light
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Solution Overview
Problem
Reflective-type display screens face challenges in displaying evenly in low ambient light conditions, leading to uneven or dark images due to their dependence on external light sources.
Innovation Solution
Incorporating a compensation light source, detector module, and processor module within the display panel, which acquires ambient light intensity and controls the compensation light source to ensure uniform display, even in low light conditions, by integrating a polarization filter layer, liquid crystal layer, and polarizer to enhance light reflection and emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a reflective-type display screen relies on external light sources, then it achieves cost saving and power saving, but it displays unevenly or shows dark images in weak ambient light conditions
Solution Approach 1:
The patent incorporates a compensation light source that can be activated in advance when ambient light is insufficient. The detector module continuously monitors ambient light levels, and when they fall below a threshold, the processor module activates the compensation light source before the display quality degrades, ensuring uniform brightness is maintained proactively rather than reactively.
Solution Approach 2:
The patent introduces a compensation light source as an intermediary element between the ambient light environment and the display panel. This intermediate light source supplements insufficient ambient light, mediating the interaction between external lighting conditions and the reflective display surface to ensure adequate illumination for uniform display.
2Illumination intensity
If a compensation light source is added to the display panel, then uniform display in low light conditions is achieved, but device complexity increases
Solution Approach 1:
The patent merges the compensation light source, detector module, and processor module into an integrated system within the display panel structure. The compensation light source is positioned behind the display panel and works in conjunction with the liquid crystal layer and polarization filter layer, combining multiple functional elements into a unified display system rather than separate add-on components.
Solution Approach 2:
The patent designs the compensation light source system to serve multiple functions: it provides ambient light compensation, works in conjunction with the liquid crystal layer for light modulation, and integrates with the polarization filter layer for optimal light output. The detector module simultaneously monitors ambient light and triggers appropriate compensation, making the system multi-functional rather than single-purpose.
3Illumination intensity
If the compensation light source is activated continuously, then uniform brightness is maintained, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring of ambient light levels by the detector module, which continuously or at regular intervals assesses the lighting environment. The compensation light source is activated only when ambient light falls below a predetermined threshold and deactivated when ambient light is sufficient, creating a periodic on-off operation pattern rather than continuous activation, thereby maintaining display uniformity while minimizing energy consumption.
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 solution enables the reflective-type display screen to maintain a better display effect in low ambient light environments while being energy-efficient, overcoming the reliance on external light sources and ensuring uniform brightness.
Implementation Method 1
the light-emitting layer is connected with the electrode and is configured to emit light under a voltage provided by the electrode
Implementation Method 2
the display panel comprises a reflection surface, the display panel is configured to reflect light by the reflection surface to realize display
Implementation Method 3
The polarization filter layer, the liquid crystal layer, and the polarizer are configured to cooperate with each other, so that a phase of light which is emitted from the light-emitting layer
Data Source
AI summary
A reflective-type display screen and a control method thereof, and a display device are provided. The reflective-type display screen comprises, a display panel, a compensation light source, a detector module and a processor module. The display panel comprises a reflection surface, the display panel is configured to reflect light by the reflection surface to realize display; the compensation light source is in the display panel; the detector module is on a light-outputting side of the display panel and is configured to acquire an intensity of ambient light outside the display screen; and the processor module is respectively connected with the detector module and the compensation light source and is configured to control operation of the compensation light source based on the intensity of the ambient light acquired by the detector module.