Display Panel Bank Extraction for Pixel Area and Printability

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Solution Overview

Problem

Existing display panels have a large number of banks, which reduces the pixel area ratio and complicates the line-bank printing process, particularly affecting the size of red and green sub-pixels, hindering mass production.

Innovation Solution

The display panel design includes a first sub-pixel group located between two adjacent banks, eliminating banks between the first and second sub-pixels, thereby reducing the number of banks and improving the pixel area ratio while accommodating both aperture ratio and printing process requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a large number of banks are used in the display panel, then the structure is stable and well-defined, but the pixel area ratio is reduced and the line-bank printing process becomes more complex

Engineering Contradiction:
Improvestructural stabilityVSAvoidpixel area ratio
Core Design Contradiction:
Stability of the object's compositionVSArea of stationary object

Solution Approach 1:

The patent extracts and removes banks from between the red and green sub-pixels, keeping only the necessary banks at the edges. This extraction reduces the total number of banks while maintaining structural integrity, thereby increasing the pixel area ratio without compromising the stability of the display panel structure.

Inventive Principle:
Principle #2Taking out (Extraction)

2Stability of the object's composition

If a large number of banks are used in the display panel, then the structural integrity is maintained, but the line-bank printing process becomes more difficult and mass production is hindered

Engineering Contradiction:
Improvestructural integrityVSAvoidprinting process difficulty
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent removes unnecessary banks from the interior regions between sub-pixels, extracting only the essential banks needed for structural support. This simplification reduces the complexity of the line-bank printing process and makes mass production more feasible while preserving structural integrity through the retained edge banks.

Inventive Principle:
Principle #2Taking out (Extraction)

3Illumination intensity

If the aperture ratio of blue sub-pixels is improved by reducing red and green sub-pixel areas, then the blue sub-pixel aperture ratio increases, but the red and green sub-pixel sizes fail to meet minimum width requirements

Engineering Contradiction:
Improveaperture ratio of blue sub-pixelsVSAvoidminimum width requirement of red and green sub-pixels
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

The patent extracts banks from between the red and green sub-pixels, which allows the red and green sub-pixels to expand to meet their minimum width requirements while still maintaining a high aperture ratio for blue sub-pixels. This extraction creates space for the sub-pixels to be properly sized without compromising the aperture ratio.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS12386109B2Display panel, display motherboard, and display device
Publication Date: 2025.08.12 SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
  • US12386109B2 patent drawing
  • US12386109B2 patent drawing
  • US12386109B2 patent drawing

AI summary

A display panel, a display motherboard and a display device are provided. The display panel has a plurality of banks and a first sub-pixel group located between two adjacent banks. The first sub-pixel group has a first sub-pixel and a second sub-pixel adjacent to each other, so as to reduce number of banks in the display panel by having no banks between the first sub-pixel and the second sub-pixel, thereby improving a pixel area ratio. This display panel can take into account both requirements of an aperture ratio and a printing process, which is beneficial to mass production.