Multi-Domain Display Substrate for Wider Viewing Angles
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Solution Overview
Problem
Traditional single-domain liquid crystal displays suffer from low contrast, asymmetric viewing angles, and color shift when viewed from different angles, limiting their effectiveness in modern applications.
Innovation Solution
A display substrate with multiple sub-pixels divided into domain areas, where each sub-pixel receives distinct direct current signals from discharge wires, enhancing the multi-domain display effect to improve color shift and contrast by varying the orientations and potentials of bright and dark pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional single-domain liquid crystal display is used, then the device complexity is low, but the viewing angle is limited and color shift occurs
Solution Approach 1:
Each sub-pixel is divided into multiple domain areas (first domain area and second domain area), where each domain has liquid crystal molecules oriented in different directions. This segmentation allows the display to achieve multi-domain effects that expand viewing angles while maintaining manageable structural complexity through systematic arrangement.
Solution Approach 2:
Different domain areas within each sub-pixel have different liquid crystal orientations and are connected to different discharge wires providing different direct current signals. This local differentiation enables each region to optimize performance for specific viewing angles, collectively achieving wide viewing angle coverage.
2Reliability
If multiple domain areas with different orientations are implemented, then color shift is reduced and viewing angle is expanded, but the device complexity increases
Solution Approach 1:
The first domain area and second domain area are configured with asymmetric orientations relative to the substrate, with liquid crystal molecules tilted at different angles and azimuths. This asymmetric configuration optimizes the display performance across different viewing directions, reducing color shift and expanding viewing angle while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent introduces orientation diversity in three-dimensional space by configuring liquid crystal molecules with different tilt angles and azimuth angles in different domain areas. This multi-dimensional orientation control enables comprehensive viewing angle coverage and color shift reduction without significantly increasing structural complexity.
3Reliability
If discharge wires providing different direct current signals are used, then the multi-domain display effect is enhanced, but the device complexity increases
Solution Approach 1:
The display substrate is divided into multiple columns, with each column connected to a specific discharge wire providing a dedicated direct current signal. This segmentation allows independent control of different domain areas through separate discharge wires, enhancing the multi-domain display effect while organizing signal control in a systematic manner.
Solution Approach 2:
The discharge wires serve multiple functions: they provide direct current signals to maintain liquid crystal orientations in corresponding domain areas, contribute to voltage division with data lines to control pixel brightness, and enable independent control of different columns. This multi-functionality reduces the need for additional dedicated control structures.
Data Source
AI summary
A display substrate and a display apparatus provided by the present disclosure include a plurality of pixels arranged in an array, where each of the pixels includes a plurality of sub-pixels, each of the sub-pixels includes a first domain area and a second domain area, and the first domain area and the second domain area each has at least two orientations; a plurality of data lines, where each of the data lines is electrically connected with first domain areas and second domain areas of a same column of sub-pixels; and a plurality of discharge wires, where each of the discharge wires is electrically connected with the second domain areas of the same column of the sub-pixels, and the discharge wires are configured for providing at least two direct current signals to two adjacent columns of pixels.