Pixel Electrode Without Cross Keel for VA Panel Penetration
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Solution Overview
Problem
The (cross) keel part of traditional pixel electrodes in VA liquid crystal display panels causes a reduction in penetration rate, leading to increased backlight brightness and power consumption.
Innovation Solution
A pixel electrode design without the (cross) keel, featuring a rectangular frame with parallel and tilted strip branches (45°, 135°, -135°, -45°) that are orthogonally connected, promoting liquid crystal molecule alignment and maximizing penetration rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional pixel electrode with (cross) keel is used, then liquid crystal molecule alignment is achieved, but the penetration rate of the display panel decreases
Solution Approach 1:
The patent removes the (cross) keel structure from the pixel electrode design. By extracting this problematic element, the patent eliminates the cause of poor liquid crystal alignment in the keel region while maintaining the beneficial alignment properties in the remaining electrode areas, thereby improving overall penetration rate.
Solution Approach 2:
The pixel electrode is divided into multiple strip branches with different tilt angles (45°, 135°, -45°, -135°). This segmentation allows each strip to independently control liquid crystal alignment in its region, creating multiple domains that collectively improve viewing angle and penetration rate without requiring a central keel structure.
2Illumination intensity
If the penetration rate is increased, then the demand for backlight brightness is reduced, but the power consumption increases
Solution Approach 1:
The patent changes the geometric parameters of the pixel electrode, specifically the tilt angles of the strip branches (45°, 135°, -45°, -135°). This parameter optimization improves liquid crystal alignment and increases penetration rate, which reduces the backlight brightness demand and consequently lowers power consumption.
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 enhances the penetration rate of liquid crystal display panels, reducing the demand for backlight brightness and power consumption.
Implementation Method 1
the plurality of first, second, third and fourth strip pixel electrode branches are respectively tilted 45°, 135°, −135°, −45° relative to the horizontal direction
Implementation Method 2
the birefraction difference of the liquid crystal molecules is larger
Implementation Method 3
a portion of the first strip pixel electrode branches orthogonally cross with the second strip pixel electrode branches of a corresponding number along the vertical central line of the rectangular frame
Data Source
AI summary
The present invention provides a pixel electrode and a liquid crystal display panel. The pixel electrode comprises a rectangular frame (40), a plurality of first strip pixel electrode branches (41), a plurality of second strip pixel electrode branches (42), a plurality of third strip pixel electrode branches (43) and a plurality of fourth strip pixel electrode branches (44), which are inside the rectangular frame (40), and connected with the rectangular frame (40), and because the pixel electrode does not including the (cross) keel, it is capable of solving the issue that the (cross) keel part of the pixel electrode causes the penetration rate reduction of the liquid crystal display panel to promote the penetration rate of the liquid crystal display panel for reducing the demand to the backlight brightness of the liquid crystal display panel and the usage power consumption. In the liquid crystal display panel of the present invention, the pixel electrode (4) thereof utilizes the structure not including the (cross) keel, and the penetration rate is higher, and the demand to the backlight brightness is lower, and the usage power consumption is lower.