Display Subpixel Connection Structure for Signal Reliability

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Solution Overview

Problem

Existing display apparatuses, particularly OLED displays, face challenges in maintaining high display quality due to the risk of subpixel disconnection, which affects the reliability and consistency of image rendering.

Innovation Solution

A modified connection structure for subpixels is introduced, where a first driving circuit supplies gate signals through different lines at distinct times, and a second driving circuit provides data signals to subpixels in a synchronized manner, ensuring stable and efficient signal transmission and reducing the risk of disconnection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional single-line connection structure is used for subpixels, then the device complexity is reduced, but the reliability of signal transmission deteriorates due to disconnection risks

Engineering Contradiction:
Improvesignal transmission reliabilityVSAvoidconnection structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent divides the subpixel connection structure into multiple independent connection paths (first connection path and second connection path). Each path has separate gate lines and data lines, so that if one path experiences disconnection, the other path can still transmit signals to the subpixel, thereby improving reliability without requiring a complete redesign of the entire connection system.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If multiple driving circuits are used to supply signals at different times, then the display quality is improved, but the device complexity increases

Engineering Contradiction:
Improvedisplay qualityVSAvoiddriving circuit complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent employs periodic action by dividing the display refresh cycle into different time periods. The first driving circuit supplies gate signals during a first time period, while the second driving circuit supplies gate signals during a second time period. This time-division multiplexing approach allows multiple driving circuits to operate without constant interference, improving display quality while managing complexity through temporal separation.

Inventive Principle:
Principle #19Periodic action

3Reliability

If subpixels are connected to different lines at different times, then the risk of disconnection is reduced, but the manufacturing precision requirements increase

Engineering Contradiction:
Improvesubpixel connection reliabilityVSAvoidsignal synchronization precision
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by pre-establishing multiple connection paths with predetermined timing sequences before actual operation. The first and second driving circuits are configured in advance to supply signals at different time periods, and the connection structure is designed beforehand to accommodate these temporal differences. This preliminary configuration reduces the risk of disconnection during operation while managing manufacturing precision requirements through advance planning.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20230169919A1Display apparatus and display panel thereof
Publication Date: 2023.06.01 LG DISPLAY CO LTD
  • US20230169919A1 patent drawing
  • US20230169919A1 patent drawing
  • US20230169919A1 patent drawing

AI summary

A display apparatus and a display panel thereof are provided. The display apparatus includes a first driving circuit supplying a gate signal through a first line at a first time and supplying the gate signal through a second line at a second time, a display panel including a first pixel including a first subpixel connected to the first line, a second subpixel connected to the second line, and a third subpixel connected to the first line, and a second driving circuit supplying a data signal to the first subpixel and the third subpixel at the first time and supplying the data signal to the second subpixel at the second time. Accordingly, each of subpixels configuring a pixel may be connected to a gate line adjacent thereto, and thus, short circuit may be prevented from occurring when all of subpixels are connected to one gate line.