Display Apparatus Visibility Evaluation Using Virtual Sub-Pixel Structures

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Evaluating the visibility of non-stripe sub-pixel structures in display apparatuses is challenging as it requires manufacturing the display apparatus, which is complex and costly, and existing methods cannot simulate the image without actual hardware.

Innovation Solution

A method and apparatus that use a RGB stripe sub-pixel structure to pseudo-display images based on various target sub-pixel structures, allowing evaluation of visibility without manufacturing the display apparatus, by establishing target sub-pixel structures through combining pixels and adjusting brightness using gamma-corrected image data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a non-stripe sub-pixel structure is manufactured to evaluate visibility, then visibility evaluation can be performed, but manufacturing complexity and cost increase significantly

Engineering Contradiction:
Improvevisibility evaluation accuracyVSAvoidmanufacturing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent creates a virtual model (target sub-pixel structure) that copies the essential characteristics of the actual non-stripe sub-pixel structure. This virtual model is established by combining multiple pixels from the stripe structure according to specific patterns (e.g., pentile, delta, or hexagon arrangements). By evaluating visibility on this copied virtual model rather than manufacturing the actual complex structure, the patent achieves accurate visibility assessment while avoiding the high manufacturing complexity and costs associated with producing physical non-stripe sub-pixel displays.

Inventive Principle:
Principle #26Copying

2Measurement precision

If a non-stripe sub-pixel structure is manufactured to evaluate visibility, then visibility evaluation can be performed, but development time and cost increase

Engineering Contradiction:
Improvevisibility evaluation accuracyVSAvoiddevelopment time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary actions by establishing the target sub-pixel structure virtually before any physical manufacturing occurs. The method pre-defines the arrangement patterns (such as pentile with 2x2 pixels, delta with triangular arrangements, or hexagon with six-fold symmetry) and pre-calculates the expected visibility characteristics. This preliminary virtual evaluation allows developers to assess visibility performance and optimize designs before committing to time-consuming and expensive manufacturing processes, thereby significantly reducing overall development time and costs.

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If existing evaluation methods are used without actual hardware, then manufacturing costs are reduced, but visibility evaluation cannot be performed accurately

Engineering Contradiction:
Improvemanufacturing costVSAvoidvisibility evaluation accuracy
Core Design Contradiction:
Ease of manufactureVSMeasurement precision

Solution Approach 1:

The patent introduces an intermediary computational model that bridges the gap between simple virtual simulations and complex physical manufacturing. This intermediary target sub-pixel structure serves as a faithful representation of the actual non-stripe structure, incorporating the same geometric arrangements and optical characteristics. By using this intermediary model for evaluation, the patent achieves measurement precision comparable to actual hardware testing while maintaining the cost and time advantages of virtual evaluation, effectively acting as a mediator between theoretical simulation and physical prototyping.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9743487B2Display apparatus and method of evaluating visibility thereof
Publication Date: 2017.08.22 SAMSUNG DISPLAY CO LTD
  • US9743487B2 patent drawing
  • US9743487B2 patent drawing
  • US9743487B2 patent drawing

AI summary

A method of evaluating visibility of a plurality of sub-pixel structures in a panel having a plurality of red sub-pixels, green sub-pixels, and blue sub-pixels arranged in stripes, the method including establishing a target sub-pixel structure different from the stripe sub-pixel structure of the panel by combining the plurality of pixels, and evaluating a displayed image by using the target sub-pixel structure.