LCD Pixel Voltage Division for Wide Viewing Angles
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in achieving sufficient viewing angle characteristics without compromising aperture ratio, leading to increased manufacturing costs and power consumption, while also dealing with the complexity of multiple subpixels which can reduce reliability and increase the number of connections.
Innovation Solution
A liquid crystal display device is designed with three or more liquid crystal elements per pixel, where the voltage applied to these elements is varied using a capacitor or resistor, allowing for improved viewing angle characteristics without increasing the number of subpixels, thus maintaining a high aperture ratio and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of subpixels is increased to improve viewing angle characteristics, then viewing angle characteristics are improved, but aperture ratio decreases and manufacturing cost increases
Solution Approach 1:
The invention divides one pixel into multiple liquid crystal elements (three or more) with different alignment directions, allowing each element to contribute to different viewing angle ranges. This segmentation approach improves viewing angle characteristics without increasing the number of subpixels, thereby maintaining the aperture ratio.
Solution Approach 2:
Each liquid crystal element within the pixel is assigned a specific alignment direction optimized for particular viewing angles. By varying the alignment directions of different elements locally within the same pixel, the invention achieves wide viewing angle characteristics while maintaining uniform pixel structure and high aperture ratio.
2Adaptability or versatility
If the number of subpixels is increased to improve viewing angle characteristics, then viewing angle characteristics are improved, but the number of connections increases and reliability decreases
Solution Approach 1:
The invention merges multiple liquid crystal elements into a single pixel structure, sharing common electrodes and control circuits. This combining approach reduces the number of external connections required compared to using separate subpixels, thereby improving reliability while achieving wide viewing angle characteristics through the multiple elements within each pixel.
3Adaptability or versatility
If the number of subpixels is increased to improve viewing angle characteristics, then viewing angle characteristics are improved, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The liquid crystal elements within each pixel share common control infrastructure and electrode structures, making the pixel design universal and scalable. This multi-functionality approach allows the same basic pixel structure to be replicated across the display without proportionally increasing overall device complexity, thereby reducing manufacturing costs while achieving wide viewing angle characteristics.
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 approach enhances viewing angle characteristics while maintaining a high aperture ratio, reducing power consumption, and improving manufacturing yield and reliability by simplifying the pixel structure and minimizing connections.
Implementation Method 1
an element which divides the applied voltage is provided. Alternatively, an element which converts current into voltage or an element which converts voltage into current is provided. For example, a capacitor, a resistor, a non-linear element, a switch, a transistor, a diode-connected transistor, a diode
Data Source
AI summary
To improve viewing angle characteristics by varying voltage which is applied between liquid crystal elements. A liquid crystal display device in which one pixel is provided with three or more liquid crystal elements and the level of voltage which is applied is varied between the liquid crystal elements is varied. In order to vary the level of the voltage which is applied between the liquid crystal elements, an element which divides the applied voltage is provided. In order to vary the level of the applied voltage, a capacitor, a resistor, a transistor, or the like is used. Viewing angle characteristics can be improved by varying the level of the voltage which is applied between the liquid crystal elements.