LCD Pixel Electrode Branching for Aperture Ratio
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Solution Overview
Problem
Liquid crystal display (LCD) devices face a disadvantage in aperture ratio due to the presence of repair wiring, which affects transmittance.
Innovation Solution
The design eliminates the need for repair wiring by branching data lines and connecting pixel electrodes directly to gate lines, allowing for a narrower distance between pixel electrodes, thereby improving transmittance without the inclusion of additional wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repair wiring is included in the LCD device, then false operation can be checked during driving test, but aperture ratio and transmittance deteriorate
Solution Approach 1:
The patent removes the repair wiring from the LCD device structure. By extracting this unnecessary component, the aperture ratio is improved as the wiring no longer occupies space that could be used for light transmission, while false operation checking is still achieved through alternative testing methods during manufacturing.
Solution Approach 2:
The data line is divided into multiple branch lines that extend in different directions to connect to pixel electrodes. This segmentation eliminates the need for a separate repair wiring by integrating the connection function directly into the data line structure, thereby improving aperture ratio while maintaining functionality.
2Reliability
If repair wiring is included in the LCD device, then false operation can be checked during driving test, but transmittance deteriorates
Solution Approach 1:
The repair wiring is completely removed from the device structure. This extraction eliminates the obstruction to light transmission caused by the wiring, thereby improving transmittance while false operation checking is performed through alternative methods during the manufacturing process.
3Area of stationary object
If repair wiring is included, then distance between pixel electrodes cannot be narrowed, but transmittance improves
Solution Approach 1:
The data line is segmented into multiple branch lines that can be strategically routed. This allows pixel electrodes to be positioned closer together without the interference of a single continuous repair wiring, thereby narrowing the distance between pixel electrodes and improving transmittance.
Data Source
AI summary
A display device includes a first data line extending in a first direction, a first pixel electrode disposed at one side of the first data line and a second pixel electrode disposed at the other side of the first data line, where the first data line includes first and second branch lines branched from a first node and connected to a second node, the first pixel electrode is connected with the first branch line, and the second pixel electrode is connected with the second branch line.