LCD Panel Sub-Pixel Domain Orientation for Viewing Angle
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Solution Overview
Problem
Conventional liquid crystal display (LCD) panels with single domain sub-pixels suffer from large color bias and poor viewing angles, while those with double domain sub-pixels have low light transmissivity due to inefficient electric field driving and boundary area issues, leading to increased power consumption and costs when trying to enhance light transmissivity.
Innovation Solution
The LCD panel configuration includes array units with two types of pixels, each having single domain inclination directions that are different from each other, eliminating the boundary area between domains and enhancing optical efficiency and light transmissivity, while improving color bias and viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If double domain sub-pixels are used, then viewing angle and color bias are improved, but light transmissivity deteriorates due to boundary area issues
Solution Approach 1:
The invention divides the pixel array into multiple array units, where each unit contains a mixture of first pixels (with first domain inclination direction) and second pixels (with second domain inclination direction). This segmentation allows different domain orientations to be distributed across the array, eliminating the need for boundary areas within individual pixels while maintaining multi-domain benefits for viewing angle and color bias.
Solution Approach 2:
Different pixels within the same array unit are assigned different domain inclination directions (first pixels vs. second pixels). This local variation in domain orientation allows each pixel to have optimized light transmissivity without boundaries, while the overall array achieves improved viewing angle and color bias through the diversity of orientations.
2Adaptability or versatility
If double domain sub-pixels are used, then color bias is improved, but power consumption increases due to low optical efficiency
Solution Approach 1:
The pixel array is segmented into multiple array units containing first pixels and second pixels with different domain orientations. This segmentation eliminates boundary areas that cause low optical efficiency, thereby maintaining high light transmissivity without requiring increased backlight power, thus avoiding increased power consumption while still achieving improved color bias.
Solution Approach 2:
The invention changes the domain orientation parameter by using pixels with different domain inclination directions (first vs. second orientations) in a mixed arrangement. This parameter variation allows the system to achieve better color bias compensation without the penalty of boundary-related optical efficiency loss that would require higher power input.
3Illumination intensity
If single domain sub-pixels are used, then light transmissivity is maintained, but viewing angle and color bias deteriorate
Solution Approach 1:
The array is segmented into multiple array units, each containing a mixture of first pixels and second pixels with different domain orientations. This segmentation allows the system to maintain high light transmissivity (like single domain pixels without boundaries) while achieving improved viewing angle and color bias (like double domain pixels) through the collective effect of multiple orientations across the array.
Solution Approach 2:
The invention merges the advantages of single domain pixels (high light transmissivity without boundaries) and double domain pixels (improved viewing angle and color bias) by combining first pixels and second pixels with different orientations in a mixed array arrangement. The result is a hybrid approach that achieves both high transmissivity and multi-domain performance.
4Device complexity
If single domain sub-pixels are used, then device complexity is reduced, but color bias and viewing angle performance worsen
Solution Approach 1:
The pixel array is segmented into multiple array units with a regular pattern of first pixels and second pixels. This segmentation provides a systematic and manufacturable approach to implementing mixed domain orientations, avoiding the complexity of within-pixel multi-domain structures while achieving improved viewing angle and color bias through the array-level arrangement.
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 configuration achieves higher liquid crystal optical efficiency, improved light transmissivity, and better color and viewing angle performance compared to single domain sub-pixels, without the need for increased power consumption or costs.
Implementation Method 1
a fringe electric field formed between the electrodes is used to drive the liquid crystal
Data Source
AI summary
A liquid crystal display (LCD) panel is provided, which comprises a plurality of array units. Each array unit comprises a first pixel and a second pixel which are equal in number; sub-pixels in the first pixel and the second pixel have respective single domain inclination directions; and the domain inclination directions of the sub-pixels in the first pixel are different from those of the corresponding sub-pixels in the second pixel. A better effect on color bias and viewing angle can be achieved with the LCD panel of the present invention.