Array Substrate with Angled Gate Lines for Display Viewing Angle

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Solution Overview

Problem

In liquid crystal display panels, particularly in the FFS mode, the rubbing direction and data line orientation result in suboptimal viewing angles due to their perpendicular arrangement, limiting the display's aperture ratio and quality.

Innovation Solution

The array substrate design includes gate lines and data lines that intersect at specific angles (60°≤α≤87°) with protrusive gate structures, allowing for optimized viewing directions and improved display quality by adjusting the orientation of liquid crystal molecules during the rubbing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If data lines and gate lines are arranged to intersect perpendicularly, then the manufacturing process is simplified, but the viewing angle and display quality are suboptimal

Engineering Contradiction:
Improvemanufacturing process simplicityVSAvoidviewing angle optimization
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent applies asymmetry by setting the included angle between data lines and gate lines to a specific non-perpendicular range (60°≤α≤87°), breaking the traditional perpendicular arrangement to optimize viewing angle and display quality while maintaining manufacturing feasibility

Inventive Principle:
Principle #4Asymmetry

2Manufacturing precision

If the rubbing direction is aligned with data lines at 7°, then the liquid crystal molecule arrangement is optimized, but the viewing angle in the data line extending direction is suboptimal

Engineering Contradiction:
Improveliquid crystal molecule arrangementVSAvoidviewing angle performance
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent changes the geometric parameters of the pixel electrode by setting specific included angles (60°≤α≤87° between data line and gate line, 20°≤β≤70° between protrusive structure side edge and gate line), which optimizes both liquid crystal molecule arrangement and viewing angle performance simultaneously

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If the aperture ratio is increased, then the display quality is improved, but the liquid crystal molecule arrangement and viewing angle are compromised

Engineering Contradiction:
Improvedisplay qualityVSAvoidviewing angle
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent applies local quality by designing a protrusive structure on the gate line with specific angular parameters (20°≤β≤70°), creating localized geometric features that optimize liquid crystal molecule arrangement in critical areas while maintaining overall aperture ratio and viewing angle performance

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10234737B2Array substrate and manufacturing method thereof, and display device
Publication Date: 2019.03.19 BOE TECHNOLOGY GROUP CO LTD
  • US10234737B2 patent drawing
  • US10234737B2 patent drawing
  • US10234737B2 patent drawing

AI summary

A gas purge valve comprising a housing formed with a fluid inlet and a fluid outlet, said fluid outlet bounded by a kinetic valve seating, and a sealing assembly comprising a float member coaxially displaceable within the housing, and a sealing cap coupled to said float member; the sealing cap being axially displaceable with respect to the float member between a first position in which it conjoins the float, and a second position in which it departs from the float; said sealing cap formed at an outside face thereof with a kinetic seal fitted for sealing engagement of the kinetic valve seating, and an automatic valve aperture formed in the sealing cap and bounded by an automatic valve seating; and an automatic sealing member articulated at an upper end of the float member for sealing engagement of the automatic valve seating.