Spliced LCD Display Parameter Adjustment for Consistent Image Output

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Solution Overview

Problem

Spliced liquid crystal displays (SLCDs) face challenges in maintaining consistent display characteristics across multiple LCD panels, leading to discontinuous images and increased design complexity and cost due to differences in brightness, flicker, and chroma, which complicates the manufacturing process.

Innovation Solution

The SLCD system includes a drive circuit with an adjusting equipment that stores and adjusts display parameters such as gamma and chroma values, allowing for unified debugging and correction of display effects after splicing, using an interface module connected to external debugging equipment and a programmable voltage buffer unit, enabling consistent display across panels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manufacturers select LED lights of the same brightness and chroma to provide backlight control, then display consistency between panels is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvedisplay consistencyVSAvoidmanufacturing process complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by introducing adjustable display parameters (brightness, chroma, gamma values) that can be modified through software after manufacturing. This allows panels with slightly different hardware characteristics to achieve consistent display effects through parameter adjustment, eliminating the need for strict hardware selection during manufacturing.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making display parameters adjustable and modifiable after manufacturing. The drive circuits include adjustable equipment that allows real-time tuning of display parameters, transforming a static manufacturing problem into a dynamic post-manufacturing adjustment process.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If manufacturers strictly control stability in the manufacturing process to reduce panel differences, then display consistency is improved, but manufacturing cost and design difficulty increase

Engineering Contradiction:

Improvepanel display consistencyVSAvoidmanufacturing process simplicity

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The patent applies preliminary action by pre-configuring adjustable parameters in the drive circuits during manufacturing, but deferring the actual adjustment to be performed later through software. This preliminary setup enables easy post-manufacturing adjustment without requiring complex manufacturing processes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses parameter changes to allow post-manufacturing adjustment of display characteristics. By incorporating adjustable parameters in the drive circuits, panels can be tuned to achieve consistency without requiring strict manufacturing control.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If LCD devices with different display characteristics are spliced together, then design flexibility is improved, but image continuity and display quality deteriorate

Engineering Contradiction:

Improvepanel selection flexibilityVSAvoidimage continuity

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by allowing individual adjustment of display parameters for each panel in the spliced configuration. This enables panels with different hardware characteristics to be combined while achieving uniform display output through software-based parameter tuning.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements feedback by using an optical sensing system to capture display images and extract display effects. This feedback mechanism allows measurement and comparison of actual display characteristics, enabling iterative adjustment of parameters to achieve image continuity across spliced panels.

Inventive Principle:

Principle #23Feedback

4Manufacturing precision

If extensive hardware debugging is performed to achieve consistent display effects, then display quality is improved, but time consumption and cost increase

Engineering Contradiction:

Improvedisplay effect consistencyVSAvoiddebugging time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies mechanics substitution by replacing extensive hardware debugging with software-based parameter adjustment. Instead of physically adjusting hardware components to achieve consistency, the system uses software to modify display parameters, significantly reducing debugging time and complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses parameter changes to enable software-based adjustment of display characteristics. By modifying parameters such as brightness, chroma, and gamma values through software, the system achieves display consistency without time-consuming hardware debugging.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9105245B2Spliced liquid crystal display (SLCD), method for checking the SLCD, and LCD device

Publication Date: 2015.08.11 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD

AI summary

A spiked liquid crystal display (SLCD) includes a plurality of LCD devices. Each LCD device includes an LCD panel, and a drive circuit controlling a display of the LCD panel. The drive circuit includes an adjusting equipment storing a display parameter, and the display parameters of the adjusting equipments of at least two LCD devices of the plurality of LCD devices are different.