Liquid Crystal Display Electrode Checkered Pattern Design
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Solution Overview
Problem
Existing liquid crystal displays with multiple openings on electrodes face issues such as increased resistance and electrode disconnection due to adjacent openings connecting, leading to deterioration in display quality, especially when the longitudinal distance between openings is shortened during patterning.
Innovation Solution
The liquid crystal display features a regular checkered pattern of openings on both electrodes, where each first opening is positioned between two adjacent second openings, allowing for a significant expansion of the distance between adjacent openings, preventing connection and maintaining display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the mutual distance of openings in the longitudinal direction is shortened, then the orientation uniformity is improved, but the openings become connected causing resistance increase and electrode disconnection
Solution Approach 1:
The patent transitions from a single-layer electrode structure to a dual-layer electrode structure with openings on both upper and lower substrates. This dimensional change allows the openings to be positioned between adjacent openings of the opposite electrode, effectively increasing the distance between openings in the same electrode layer and preventing connection while maintaining orientation uniformity.
Solution Approach 2:
The patent divides the electrode structure into two separate layers (upper electrode and lower electrode), each with its own pattern of openings. This segmentation allows independent optimization of each layer's opening pattern, enabling the distance between openings in the same layer to be maintained while still achieving the desired orientation control through the combined effect of both layers.
2Speed
If the length of openings in the lateral direction is shortened, then the response speed is improved, but the mutual distance in longitudinal direction must be shortened causing opening connection
Solution Approach 1:
By adding the depth dimension with a dual-layer electrode structure, the patent can maintain longer lateral opening lengths for better response speed while the staggered arrangement in the third dimension (between layers) prevents the openings from connecting in the same plane, thus maintaining electrode integrity.
3Adaptability or versatility
If rectangular openings are alternately arranged on opposed substrates, then multi-domain orientation is achieved, but the distance between adjacent openings becomes small causing connection during patterning
Solution Approach 1:
The patent uses the vertical dimension (distance between substrates) to resolve the horizontal plane conflict. By staggering the openings between upper and lower electrodes, the design achieves multi-domain orientation through alternating patterns while maintaining sufficient separation distance in each individual layer, preventing connection during patterning processes.
Solution Approach 2:
The patent employs asymmetric positioning where openings in the upper electrode are positioned between openings in the lower electrode, rather than directly opposite each other. This asymmetric arrangement creates the necessary separation distance while still achieving the desired multi-domain orientation effect through the combined electric field distribution.
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 configuration effectively avoids the increase in resistance and disconnection of electrodes, thereby maintaining the display quality by ensuring the openings are not connected, thus maintaining the integrity of the electrode structure.
Implementation Method 1
A liquid crystal layer 7 is mutually provided between the upper substrate 1 and the lower substrate 4. With this liquid crystal display, the oriented state of the liquid crystal layer 7 is vertically oriented in the initial state (state of no voltage application), and the oriented state of the liquid crystal layer 7 changes so as to intersect with the electric field direction based on voltage application.
Implementation Method 2
the oriented state of the liquid crystal layer 7 changes so as to intersect with the electric field direction based on voltage application
Data Source
AI summary
The liquid crystal display comprises a first substrate having a first electrode formed on one side, and a second substrate having a second electrode formed on one side and which is placed opposite to the first substrate so that the second electrode and the first electrode of the first substrate face each other. A liquid crystal layer is provided between the first substrate and the second substrate. The first electrode includes a plurality of first openings provided in a regular checkered pattern with each first opening having a shape extending in a first direction. The second electrode includes a plurality of second openings provided in a regular checkered pattern with each second opening having a shape extending in the first direction. The plurality of first openings and the plurality of second openings are relatively arranged so that each of the plurality of first openings is positioned between two second openings which are adjacent in a planar view among the plurality of second openings.