Dual-Resolution LCD Panel with Selective Reflection Film
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Solution Overview
Problem
Liquid crystal display (LCD) devices consume high power due to the continuous operation of backlights, which is a concern for mobile technologies with limited power supplies, and existing solutions fail to efficiently reduce power consumption while maintaining image display capabilities.
Innovation Solution
The implementation of a dual-resolution LCD design with a low-resolution area for displaying essential information like time or battery status and a high-resolution area for detailed images, utilizing a selective reflection film to enable image display without the backlight when necessary, and a backlight assembly with a light source controller to manage power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the backlight is continuously operated to maintain image display capability, then the display quality is preserved, but the power consumption increases
Solution Approach 1:
The display area is divided into two distinct regions: a first area with higher resolution for detailed information and a second area with lower resolution for essential information. This segmentation allows the system to display critical information in the second area even when the backlight is off, while maintaining full color and resolution capabilities in the first area when needed, thus reducing overall power consumption while preserving essential display functionality.
Solution Approach 2:
Different quality standards are applied to different regions of the display. The first area maintains full color and high resolution for detailed images, while the second area uses a simplified monochrome or limited-color scheme sufficient for essential information like time and battery status. This local differentiation allows the system to reduce power consumption in the second area without compromising the overall utility of the display.
2Ease of manufacture
If the pixel size in the low-resolution area is increased to reduce the number of pixels, then the manufacturing complexity is reduced, but the resolution in that area decreases
Solution Approach 1:
The display accepts different resolution qualities in different areas based on functional requirements. The first area maintains high resolution with smaller pixels for detailed images, while the second area uses larger pixels with lower resolution for essential information display. This approach simplifies manufacturing in the second area without significantly impacting overall display utility, as essential information can be effectively conveyed even at lower resolution.
Data Source
AI summary
An LCD device includes a transmissive LCD panel assembly, a backlight assembly for supplying light to the LCD panel assembly, and a selective reflection film provided between the backlight assembly and the LCD panel assembly. A display region of the LCD has a low-resolution area and a high-resolution area, and a pixel formed in the low-resolution area that is larger than a pixel formed in the high-resolution area.