FFS Pixel Electrode Concave Structure for Light Transmittance
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Solution Overview
Problem
The light transmittance of pixels in a white state is reduced due to an undesired electric field formed between the end electrode and the pixel electrode in Fringe Field Switching (FFS) display panels, degrading the display effect.
Innovation Solution
Incorporating a concave structure at the intersection between the end electrode and the pixel electrode to increase the distance between them, thereby weakening the undesired electric field and enhancing light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the end electrode is parallel to the pixel electrode edge, then the electrode structure is simple and easy to manufacture, but an undesired electric field is formed that reduces light transmittance and degrades display effect
Solution Approach 1:
The patent applies local quality by making the end electrode non-parallel only at the intersection region with the pixel electrode, while maintaining parallel configuration in other areas. This localized modification eliminates the undesired electric field at the critical intersection area without complicating the overall electrode structure, thus resolving the contradiction between manufacturing simplicity and light transmittance.
Solution Approach 2:
The patent introduces asymmetry by designing the end electrode with a non-parallel configuration at the intersection region, creating an asymmetric angle relative to the pixel electrode edge. This asymmetric design prevents the formation of the undesired electric field that occurs with parallel configuration, thereby improving light transmittance while maintaining reasonable structural simplicity.
2Device complexity
If the end electrode forms an electric field in horizontal direction, then the electrode configuration is straightforward, but the electric field maintains the initial state of liquid crystal molecules and causes light polarization, reducing light transmittance
Solution Approach 1:
The patent applies local quality by modifying the end electrode configuration specifically at the intersection region with the pixel electrode, while maintaining the straightforward parallel configuration in other areas. This localized asymmetric design eliminates the harmful horizontal electric field at the critical area without significantly increasing overall device complexity.
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 improves the light transmittance of pixels during the white state in FFS display mode, optimizing the display effect by reducing the impact of the electric field detrimental to pixel rotation.
Implementation Method 1
the electric field formed between the end electrode 113 and the pixel electrode 12 further includes an electric field having a direction X2
Implementation Method 2
the liquid crystal molecules in the FFS display panel are driven to rotate and a white state is displayed
Data Source
AI summary
The present disclosure discloses a pixel structure, a display panel and a display device, wherein the pixel structure includes a first electrode and a second electrode located above the first electrode, at least one of the first electrode and the end electrode is provided with a concave structure in the region at the intersection between the first electrode and the end electrode, so as to increase the distance between the first electrode and the end electrode at the intersection, resulting in that the undesired electric field formed between the end electrode and the first electrode is weakened, namely, the electric field unbeneficial for the pixels to display the white state is weakened, so that the light transmittance of pixels during displaying the white state in an FFS display mode is improved, so as to optimize the display effects of the display panel and the display device.