Liquid Crystal Display Data Line Pairing for Driver Reduction
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Solution Overview
Problem
The high cost and complexity of data driver integrated chips in liquid crystal displays (LCDs) for high-resolution, large-sized displays necessitate a reduction in the number of data driver circuits while maintaining uniform pixel luminance and aspect ratios.
Innovation Solution
The design incorporates a matrix arrangement of pixels with connected first and second gate lines and data lines, where data lines intersect, and pixel electrodes with parallelogrammic shapes to reduce the number of data drivers and ensure uniform voltage distribution across pixels, thereby reducing production costs and maintaining consistent pixel characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the number of data driver integrated chips is reduced, then production costs are lowered, but maintaining uniform pixel luminance and aspect ratios becomes more difficult
Solution Approach 1:
The display panel is divided into multiple regions with different data line configurations. First and second data lines are connected to different groups of pixels (odd-numbered vs even-numbered pixels), allowing independent control and compensation for luminance variations across different regions while using fewer driver chips.
Solution Approach 2:
Different pixel groups are assigned different data line connections and driving schemes. By applying local compensation measures to different regions (different luminance compensation for different pixel groups), the system maintains overall uniformity while using a reduced number of driver chips.
2Ease of manufacture
If data driver integrated chips are reduced, then production costs decrease, but device complexity increases due to need for alternative configurations
Solution Approach 1:
Multiple data lines are merged into fewer driver chip outputs. The first and second data lines share common driver chip outputs, and their connections to different pixel groups create a consolidated structure that reduces the total number of driver chips needed while maintaining functional complexity through intelligent routing.
3Productivity
If data lines are connected in pairs, then the number of data drivers is reduced, but voltage distribution uniformity across pixels becomes more challenging
Solution Approach 1:
Instead of connecting adjacent data lines together, the patent connects alternating data lines (first data line to odd pixels, second data line to even pixels). This inverted connection pattern distributes voltage more evenly across the display panel by balancing the capacitive loading on each data line.
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 reduces the number of data drivers, lowers production costs, and ensures uniform pixel luminance and aspect ratios, enhancing the overall performance and efficiency of the liquid crystal display.
Implementation Method 1
applying a voltage to the electric field generating electrodes to generate an electric field in the liquid crystal layer
Implementation Method 2
determining alignment of the liquid crystal molecules in the liquid crystal layer to control the polarization of incident light
Data Source
AI summary
A liquid crystal display includes a plurality of pixels including pixel electrodes and switching devices connected to the pixel electrodes and arrayed in a matrix, a plurality of pairs of first and second gate lines connected to the switching devices and separated from each other, and a plurality of data lines connected to the switching devices and intersecting the first and second gate lines, wherein the plurality of data lines are connected so that end portions of two data lines in each pair of the data lines are connected to each other.