Array Substrate Demultiplexer Driver Circuit Reduces Line Count

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Solution Overview

Problem

In conventional liquid crystal display (LCD) technologies, the increase in screen and image resolution leads to an increase in data lines and gate lines, affecting the rate of penetration and display effect, and resulting in higher energy consumption.

Innovation Solution

The proposed array substrate incorporates a driver circuit structure with a pixel matrix, second gate lines, first data lines, and demultiplexers, where data signals are shared among multiple data lines and gate lines, allowing for efficient distribution and control of signals to pixels, reducing the number of lines required and optimizing energy usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the number of data lines and gate lines is increased to achieve higher screen resolution and image resolution, then the display quality is improved, but the rate of penetration and display effect are affected negatively

Engineering Contradiction:
Improvescreen resolutionVSAvoidnumber of data lines and gate lines
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the data lines into two separate groups: first data lines connected to first demultiplexers and second data lines connected to second demultiplexers. This segmentation allows independent control and optimization of signal paths, reducing interference and improving display quality while maintaining high resolution

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces demultiplexers as intermediary components between the data lines and pixel electrodes. These demultiplexers act as mediators that selectively connect data lines to pixel electrodes based on control signals, enabling efficient signal distribution and reducing the need for excessive direct connections

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If the number of data lines and gate lines is increased to achieve higher screen resolution and image resolution, then the display quality is improved, but the energy consumption increases

Engineering Contradiction:
Improveimage resolutionVSAvoidenergy consumption
Core Design Contradiction:
Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent employs periodic switching of demultiplexers controlled by gate lines to sequentially connect different data lines to pixel electrodes. This periodic action allows the system to achieve high resolution display while consuming less energy, as not all data lines need to be active simultaneously

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent introduces dynamic switching capabilities through demultiplexers that can change connections based on control signals. This dynamic configuration allows the system to optimize energy consumption by activating only the necessary data lines and demultiplexers at any given time, rather than maintaining all connections in a static high-resolution configuration

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10290274B2Array substrate
Publication Date: 2019.05.14 WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
  • US10290274B2 patent drawing
  • US10290274B2 patent drawing
  • US10290274B2 patent drawing

AI summary

An array substrate proposes a gate driver, a data driver, and a driver circuit structure. The driver circuit structure includes a plurality of driver circuit units. Each of driver circuit units includes a pixel matrix, a plurality of second gate lines, a plurality of first data lines, and a plurality of demultiplexers. The conventional technical problem that the data lines and the gate lines increase when screen resolution and image resolution increase, which affects the rate of penetration and the display effect, is successfully solved.