Array Substrate Color Resin Layer Light Leakage Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display devices with ADS mode suffer from light leakage due to irregular liquid crystal molecule arrangements and insufficient rotation angles, leading to reduced contrast and display quality, especially under outdoor sunlight conditions.
Innovation Solution
The array substrate design includes a color resin layer formed above the gate insulation layer to increase the distance between the pixel electrode and data/gate lines, using metal materials for reflective region electrodes, and integrating a trans-reflective structure to enhance light utilization and alignment, thereby preventing light leakage and improving contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pixel electrode is positioned close to the data line to reduce device complexity, then the device structure is simpler, but the pixel electrode is influenced by the data line voltage causing light leakage and reduced contrast
Solution Approach 1:
The patent introduces a color filter substrate as an intermediate layer between the array substrate and the liquid crystal layer, creating a new spatial dimension for electrode positioning. This allows the pixel electrode to be electrically isolated from the data line while maintaining the overall device structure, thus preventing voltage interference and light leakage without significantly increasing device complexity.
2Strength
If the passivation layer has a protrusion at the TFT region to protect the transistor, then the TFT is protected, but the liquid crystal molecules are irregularly arranged after cell assembly causing light leakage
Solution Approach 1:
The patent moves the color filter layer to a separate substrate (color filter substrate) rather than forming it on the array substrate. This dimensional separation allows the passivation layer protrusion to remain for TFT protection while the liquid crystal molecules can align properly between the two substrates, eliminating the light leakage problem caused by irregular alignment.
3Illumination intensity
If a trans-reflective structure is used to improve outdoor readability, then the contrast is enhanced under sunlight, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines the color filter layer and the reflective electrode layer into a single integrated structure on the color filter substrate. This merging of functions allows the display to achieve trans-reflective mode for improved outdoor readability while simplifying the manufacturing process by reducing the number of separate layers and assembly steps.
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 ensures proper liquid crystal rotation, reduces light leakage, enhances contrast and display quality, and allows for better readability under strong light conditions, such as outdoors, while simplifying the manufacturing process and reducing costs.
Implementation Method 1
a multi-dimensional electric field is formed with both an electric field generated at edges of slit electrodes in a same plane and an electric field generated between a slit electrode layer and a plate-like electrode layer, so that liquid crystal molecules at all orientations can be rotated
Implementation Method 2
the liquid crystal display device with trans-reflective structure can increase the contrast of the display device used outdoors by increasing the reflectivity of the panel
Data Source
Figure 1~3a
Figure 3b
Figure 4
AI summary
Embodiments of the invention relate to an array substrate, a manufacturing method thereof and a display device comprising the array substrate. The array substrate comprises a gate line and a data line which define a pixel region, the pixel region comprises a thin film transistor region and an electrode pattern region, a gate electrode, a gate insulation layer, an active layer, a source electrode, a drain electrode and a passivation layer are formed in the thin film transistor region, the gate insulation layer, a pixel electrode, the passivation layer and a common electrode are formed in the electrode pattern region, and the common electrode and the pixel electrode form a multi-dimensional electric field. A color resin layer is formed between the gate insulation layer and the pixel electrode.