Liquid Crystal Display Device Adjusting Hole for Filling Error Correction

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The liquid crystal dropping method for large-scale substrates faces challenges in accurately calculating the quantity of liquid crystals, leading to insufficient or excessive filling, which results in manufacturing inefficiencies and discarded panels due to the inability to correct filling errors.

Innovation Solution

A method involving the formation of holes in the liquid crystal cell to adjust the liquid crystal quantity, where excessive filling is externally discharged and insufficient filling is injected, with the holes subsequently blocked using a filler to prevent further issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the liquid crystal dropping method is used for large-scale substrates, then manufacturing productivity is improved, but manufacturing precision deteriorates due to difficulty in calculating proper liquid crystal quantity

Engineering Contradiction:
Improvemanufacturing productivityVSAvoidliquid crystal quantity precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent introduces a liquid crystal quantity adjusting hole before final assembly, allowing preliminary adjustment of liquid crystal quantity. This enables correction of quantity errors that occur during the dropping process, thereby maintaining both high productivity and precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the physical state of the liquid crystal cell by creating an opening (adjusting hole) that allows modification of liquid crystal quantity parameters. This enables post-manufacturing adjustment of the liquid crystal volume to achieve precise filling.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If liquid crystal quantity is calculated based on cell size and height, then the process is simple, but manufacturing precision deteriorates due to various factors affecting accuracy

Engineering Contradiction:
Improvecalculation simplicityVSAvoidliquid crystal quantity precision
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent enables the liquid crystal cell to self-correct quantity errors through the adjusting hole. The cell structure itself provides the means for correction, eliminating the need for complex external calculation and adjustment systems.

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If insufficient or excessive liquid crystal filling occurs, then manufacturing precision is compromised, but productivity deteriorates because the panel must be discarded with no correction method available

Engineering Contradiction:
Improveliquid crystal filling accuracyVSAvoidmanufacturing productivity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The adjusting hole is prepared in advance before final sealing, allowing preliminary adjustment of liquid crystal quantity. This prevents the need to discard panels with filling errors, thereby maintaining both precision and productivity.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Instead of discarding panels with filling errors, the patent recovers them by providing a correction mechanism (adjusting hole) that allows re-adjustment of liquid crystal quantity, thereby converting waste into usable products.

Inventive Principle:
Principle #34Discarding and recovering

Data Source

PatentUS8405814B2Liquid crystal display device and fabricating method thereof
Publication Date: 2013.03.26 LG DISPLAY CO LTD
  • US8405814B2 patent drawing
  • US8405814B2 patent drawing
  • US8405814B2 patent drawing

AI summary

A liquid crystal display device and fabricating method thereof are disclosed, by which insufficient or excessive filling of liquid crystals can be cured by adjusting a liquid crystal quantity in a liquid crystal display device having the insufficient or excessive filling of liquid crystals generated thereon. The present invention includes the steps of preparing a liquid crystal cell including a first substrate, a second substrate and a liquid crystal layer between the first and second substrates, checking a liquid crystal quantity within the liquid crystal cell, forming a hole in the liquid crystal cell, adjusting the liquid crystal quantity through the hole, and blocking the hole.