Reflective-Transmissive Display Panel for Bright and Dark Environments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid crystal display panels face energy wastage in bright environments and inadequate illumination in dark environments, as transmission panels require constant backlight in bright conditions and reflection panels rely heavily on ambient light.
Innovation Solution
A display panel design featuring a first and second substrate with a liquid crystal layer, a color film layer, polarizers, and a reflector that diffuses light, allowing for both ambient light utilization in bright environments and backlight usage in dark environments, ensuring effective display in various lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transmission display panel uses a backlight source in bright environments, then the display can maintain uniform brightness, but energy is wasted due to unnecessary backlight operation
Solution Approach 1:
The display panel dynamically switches between transmission mode (using backlight) and reflection mode (using ambient light) based on environmental lighting conditions. The liquid crystal layer adjusts its optical properties in real-time to enable this dynamic operation, allowing the display to adapt to varying ambient light levels and optimize energy consumption accordingly.
Solution Approach 2:
The display panel integrates both transmission and reflection display functions into a single device. By incorporating reflective material and liquid crystal molecules capable of both transmission and reflection modes, the display can function effectively in various lighting environments (dark, dim, and bright), eliminating the need for separate display types for different conditions.
2Use of energy by moving object
If a reflection display panel uses reflective material in dark environments, then energy can be saved, but the screen illumination becomes insufficient
Solution Approach 1:
The display dynamically adjusts between reflection and transmission modes based on ambient light levels. In dark environments, it switches to transmission mode where the backlight source illuminates the display, ensuring sufficient screen brightness while maintaining energy efficiency through intelligent mode selection.
Solution Approach 2:
The display panel combines both reflection and transmission capabilities, allowing it to function as a reflection display in bright environments (saving energy) and as a transmission display in dark environments (ensuring visibility). This multi-functionality resolves the contradiction between energy saving and sufficient illumination.
3Illumination intensity
If a transmission display panel operates in dark environments, then uniform brightness is achieved, but energy consumption increases due to constant backlight operation
Solution Approach 1:
The display dynamically selects between transmission and reflection modes based on ambient lighting conditions. In dark environments, it can switch to transmission mode with controlled backlight operation to maintain uniformity, or use reflection mode if sufficient ambient light is available, thereby optimizing energy consumption while maintaining display quality.
Solution Approach 2:
By integrating both transmission and reflection capabilities, the display can achieve uniform brightness in dark environments through transmission mode when necessary, while also having the option to use reflection mode to reduce energy consumption when ambient light permits, thus resolving the energy uniformity contradiction.
4Use of energy by moving object
If a reflection display panel operates in bright environments, then energy is saved, but display quality becomes dependent on ambient light availability
Solution Approach 1:
The display dynamically adapts its operating mode based on real-time ambient light detection. In bright environments, it switches to reflection mode to save energy, while in dark or dim environments, it automatically transitions to transmission mode to maintain display quality, thereby achieving both energy efficiency and environmental adaptability.
Solution Approach 2:
The display panel functions as both a reflection display and a transmission display, enabling it to adapt to various environmental conditions. This universality ensures that the display maintains high quality across different lighting scenarios while optimizing energy consumption, resolving the contradiction between energy saving and environmental adaptability.
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 a display panel that maintains clear visibility in both bright and dark environments without the limitations of traditional panels, optimizing energy use and display quality.
Implementation Method 1
the light emitted from the backlight source can achieve the bright and dark display of the display panel by rotatory action of liquid crystal molecules
Implementation Method 2
the second polarizer being configured to be able to reflect the light component whose polarization direction is perpendicular to the transmission axis of the second polarizer
Implementation Method 3
the reflective surface of the first reflector is configured to be capable of diffusing the reflected light at different angles
Data Source
AI summary
The embodiments of the present disclosure relate to a display panel, a method of manufacturing therefor, and a display device. The display panel includes: a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate; a color film layer disposed on the side of the first substrate adjacent to the liquid crystal layer, the color film layer including a color filter layer, a black matrix, and a first reflector; a first polarizer and a second polarizer, which are respectively disposed on the first substrate and the second substrate; a light absorbing element disposed on the side of the second substrate away from the liquid crystal layer; and a backlight source disposed below the second substrate. The display panel provided by the embodiments of the present disclosure has a better display effect in a bright environment and a dark environment.