Lateral Field Display Panel Segmented Electrodes
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Solution Overview
Problem
The lateral electric field method in liquid crystal displays requires a relatively high voltage, which poses challenges in achieving high display quality and cost-effective manufacturing.
Innovation Solution
A display panel design with a first and second substrate, featuring pixels with insulated data and signal lines, switching devices, and pixel electrodes, which effectively apply voltage to the liquid crystal layer to generate an electric field for high aperture ratio and low-cost manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If lateral electric field method is used to apply voltage to liquid crystal layer, then aperture ratio is improved, but required voltage becomes relatively high
Solution Approach 1:
The pixel electrode is divided into first and second pixel electrodes that are spatially separated. The first pixel electrode is connected to the data line while the second pixel electrode is connected to the signal line, allowing the voltage to be applied across the liquid crystal layer from two distinct points, thereby achieving high aperture ratio while managing voltage requirements through segmented electrode structure
Solution Approach 2:
The electrode configuration transitions from a single-point contact to a distributed two-point contact arrangement. By positioning the first and second pixel electrodes at different locations within the pixel region and connecting them to different signal lines, the voltage application is extended into the spatial dimension, enabling effective voltage distribution across the liquid crystal layer without requiring excessively high voltage at any single point
2Ease of manufacture
If insulated data and signal lines are used in pixel structure, then manufacturing cost is reduced, but device complexity increases
Solution Approach 1:
The insulation structures for the data line and signal line are merged into a single integrated insulation layer rather than requiring separate insulation components. This unified insulation approach simplifies the manufacturing process while maintaining the electrical isolation between data and signal lines, thereby reducing manufacturing cost without significantly increasing device complexity
Solution Approach 2:
An insulation layer is introduced as an intermediary between the data line and signal line to prevent electrical interference. This intermediary insulation structure enables the data and signal lines to be routed close together for compact design while maintaining electrical isolation, thus balancing manufacturing simplicity with functional 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
The design achieves high display quality and cost-effectiveness by ensuring effective voltage application to pixel electrodes, enhancing aperture ratio and reducing manufacturing costs.
Implementation Method 1
a display panel displays an image according to an electric field generated between a first pixel electrode and a second pixel electrode which are formed on the liquid crystal layer
Implementation Method 2
a liquid crystal display includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate
Data Source
AI summary
A display panel includes a first substrate including a plurality of pixels, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first and second substrates. Each pixel includes a data line, a gate line insulated from the data line, a first signal line insulated from the data line, a second signal line insulated from the data line, a switching device connected to the data line and the gate line, a first pixel electrode connected to the switching device, and a second pixel electrode connected either the first signal line or the second signal line. The display panel displays an image according to an electric field generated between the first and second pixel electrodes.