Switch Cell Metal Electrode Placement for Display Panel Power Reduction
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Solution Overview
Problem
Liquid crystal 3D display substrates face high impedance due to high resistivity of transparent electrodes like ITO, leading to increased driving power requirements, especially for large-sized display panels.
Innovation Solution
A switch cell with metal electrodes positioned to correspond with black matrices on the display substrate, reducing total resistance by being shielded and connected in parallel with transparent electrodes, thereby decreasing the driving power needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent electrodes (ITO) are used in the switch cell, then the pixels are not shielded, but the resistivity is very high causing high impedance and increased driving power requirements
Solution Approach 1:
The patent combines transparent ITO electrodes with metal electrodes in a hybrid configuration. The metal electrodes are positioned to correspond with black matrix regions, while ITO electrodes cover the pixel regions. This merging allows the system to benefit from both the low resistance of metal electrodes and the transparency of ITO electrodes, resolving the contradiction between pixel transparency and driving power requirements.
Solution Approach 2:
The patent applies different electrode materials in different spatial locations: metal electrodes are used in regions corresponding to black matrices where transparency is not required, while ITO electrodes are used in pixel regions where transparency is essential. This local differentiation allows each region to have the optimal electrode material for its specific function, reducing overall resistance without compromising pixel visibility.
2Area of stationary object
If the display panel size is increased, then the display area is enlarged, but the driving power requirement increases significantly due to high impedance
Solution Approach 1:
For large-sized display panels, the patent merges metal electrodes with ITO electrodes to create a hybrid electrode system. The metal electrodes provide low-resistance current paths that compensate for the increased impedance inherent in larger panel sizes, while the ITO electrodes maintain pixel transparency. This combination allows large displays to function without requiring excessive driving power.
Solution Approach 2:
The patent strategically places metal electrodes in specific regions (corresponding to black matrices) of the display panel, creating local low-resistance pathways. This local enhancement of electrical conductivity allows the overall large-sized panel to maintain acceptable impedance levels without requiring all electrodes to be metal, thus preserving transparency where needed while reducing overall power requirements.
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
Significantly reduces the total resistance of the switch cell without affecting the aperture ratio, making it suitable for large-sized display panels by minimizing the required driving power.
Implementation Method 1
at least one metal electrode provided on the switch substrate. The position of the metal electrode corresponds to at least a portion of one corresponding black matrix of at least one black matrix provided on the display substrate
Implementation Method 2
reducing the total resistance of the switch cell without affecting the aperture ratio
Data Source
AI summary
Embodiments of the present invention provide a switch cell and manufacturing method thereof, a display substrate, and a display device and the manufacturing method thereof, the driving power required by the switch cell can be reduced. The switch cell for converting a 2D image to be displayed by a display substrate into a 3D image comprises: a switch substrate; and at least one metal electrode provided on the switch substrate, wherein the position of the metal electrode is configured to be correspond to at least a portion of one corresponding black matrix of at least one black matrix provided on a display substrate.