Pixel Structure Slit Design for Touch Display Restore Time
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Solution Overview
Problem
Conventional fringe field switching liquid crystal displays experience prolonged restore times for disturbed liquid crystal molecules when integrated with touch panels, leading to uneven brightness and impaired touch input accuracy due to the design of narrow and long slits in the pixel structure.
Innovation Solution
The pixel structure is modified by incorporating a design with shorter slits and a railing-shape first electrode, where the slits are oriented at an angle between 0° and 45° relative to the rectangular pixel region, and a whole block second electrode is used, reducing the length of the slits and enhancing the restore efficiency of liquid crystal molecules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the pixel structure uses narrow and long slits to achieve fringe field switching effect, then wide viewing angle display effect is improved, but the restore time of disturbed liquid crystal molecules is prolonged
Solution Approach 1:
The first electrode is divided into multiple stripe patterns with connecting patterns that create multiple slits. This segmentation allows the electrode to maintain the fringe field switching effect while the individual slits are shorter in length, thereby reducing the restore time of liquid crystal molecules after disturbance.
Solution Approach 2:
The connecting patterns are strategically positioned at specific locations between adjacent stripe patterns to create slits of optimized length. This local modification ensures that the fringe field effect is maintained where needed while the slit length is controlled to reduce restore time in the context of touch panel integration.
2Reliability
If the pixel structure uses long slits to maintain fringe field effect, then display quality is improved, but touch input accuracy is impaired due to uneven brightness around touch points
Solution Approach 1:
By segmenting the electrode into stripe patterns with connecting patterns, the slit length is reduced while maintaining the fringe field effect. This segmentation prevents excessive disturbance of liquid crystal molecules during touch interaction, thereby maintaining both display quality and touch input accuracy.
Solution Approach 2:
The invention changes the geometric parameters of the slits by introducing connecting patterns that reduce slit length. This parameter modification optimizes the balance between maintaining the fringe field effect for display quality and minimizing interference with touch sensitivity.
3Ease of manufacture
If the pixel structure uses conventional slit design, then manufacturing simplicity is maintained, but restore efficiency of liquid crystal molecules is reduced
Solution Approach 1:
The electrode structure is segmented into stripe patterns and connecting patterns, which can be manufactured using conventional photolithography and deposition processes. This segmentation achieves shorter slits for improved restore efficiency without requiring complex manufacturing steps, as the connecting patterns are formed using standard fabrication techniques.
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 design allows for rapid restoration of liquid crystal molecules after disturbance, improving display quality and touch input accuracy while maintaining wide viewing angle capabilities, and is compatible with existing manufacturing processes.
Implementation Method 1
the first electrode 108 and the second electrode 110 are applied by different voltages so as to generate a fringe field effect and render the liquid crystal display represent the wide viewing angle display effect
Implementation Method 2
the liquid crystal molecules of the liquid crystal display may be disturbed and thus disorderly arrange when a user press the above-mentioned touch display panel
Data Source
AI summary
A pixel structure disposed on a substrate including a scan line, a data line, an active element, a first electrode, and a second electrode is provided. The scan line and the data line are intersected to define a rectangular pixel area. The active element is electrically connected to the scan line and the data line. The first electrode has stripe patterns and connecting patterns located in the rectangular pixel area. Each connecting pattern is connected to the central parts or the parts near the central parts of two adjacent stripe patterns to demarcate or define two silts between the two adjacent stripe patterns. The extending direction of the slits is intersected to the rectangle length of the rectangular pixel area by an angle θ wherein 0°≦θ<45°. The second electrode is located between the first electrode and the substrate and part of the second electrode is exposed by the slits.