Reflective LCD Array Substrate with Auxiliary Strip Reflectors
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Solution Overview
Problem
Traditional reflective liquid crystal displays suffer from low brightness due to incomplete reflection of light, affecting image quality and contrast, as the reflecting layer is not designed to cover the entire array substrate effectively.
Innovation Solution
An array substrate with a reflective pixel electrodes array and an auxiliary reflector comprising first and second reflective strip elements, strategically placed between and around pixel electrodes, enhances overall reflectance by optimizing light utilization and reducing parasitic capacitance, while maintaining independent pixel control and simplifying fabrication through shared material and patterning processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reflecting layer is designed as a plurality of pixel electrodes in an array to enable independent pixel control, then display functionality is achieved, but the overall reflectance and brightness are reduced
Solution Approach 1:
The reflecting layer is segmented into pixel electrodes for independent control, but additional reflective components (common reflector and auxiliary reflector) are introduced to compensate for the fragmented structure's reduced reflectance
Solution Approach 2:
Multiple reflective components (pixel electrodes, common reflector, and auxiliary reflector) are combined to work together, where the common reflector and auxiliary reflector compensate for the light reflection deficiency caused by pixel electrode segmentation
2Adaptability or versatility
If the reflecting layer is fragmented into pixel electrodes for display control, then pixel-level display is achieved, but the intensity of reflected light decreases
Solution Approach 1:
The common reflector and auxiliary reflector act as intermediary reflective surfaces that redirect and concentrate light toward the pixel electrodes, compensating for the light loss caused by fragmentation into individual pixel electrodes
3Illumination intensity
If reflective strip elements are placed close to pixel electrodes to maximize light reflection, then reflectance is improved, but parasitic capacitance increases
Solution Approach 1:
Different regions have different reflective structures: the common reflector is positioned at a standard distance to balance reflectance and capacitance, while the auxiliary reflector is specifically placed in peripheral areas to maximize light utilization without significantly increasing parasitic capacitance
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 significantly improves display contrast and image quality by increasing reflectance, particularly in white modes, without affecting black mode display, and reduces defects and parasitic capacitance, thus enhancing the overall performance of reflective liquid crystal displays.
Implementation Method 1
an auxiliary reflector at least comprising a plurality of first reflective strip element, each first reflective strip element being located between two adjacent reflective pixel electrodes
Data Source
AI summary
An array substrate, a reflective liquid crystal display and a manufacturing method for an array substrate are provided, so as to enhance the overall reflectance of the reflective liquid crystal display and improve the display contrast and quality of image displayed. The array substrate includes a base substrate, a reflective pixel electrodes array on the base substrate, and an auxiliary reflector at least including a plurality of first reflective strip elements, each first reflective strip element being located between two adjacent reflective pixel electrodes.