Display Panel Data-Line Offset Control for Load Deviation Compensation

Solution Overview

Problem

Existing display technologies face challenges in maintaining display quality while reducing power consumption, particularly due to structural and environmental factors affecting pixel columns and data lines.

Innovation Solution

A display apparatus with a specific pixel and data line arrangement, combined with a channel controller that adjusts voltage levels using offset values based on structural and environmental conditions, to compensate for load deviations and prevent degradation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by stationary object

If a display panel with reduced power consumption structure is used, then power consumption is reduced, but display quality may degrade

Engineering Contradiction:

Improvepower consumptionVSAvoiddisplay quality

Core Design Contradiction:

Use of energy by stationary objectVSReliability

Solution Approach 1:

The patent applies different offset values to different source channels based on their specific characteristics. The channel controller identifies source channels connected to pixel columns with alternating sub-pixel arrangements and applies compensatory offset values specifically to these channels, while leaving other channels unchanged. This localized compensation approach maintains display quality only where needed without unnecessarily increasing power consumption across the entire system.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent modifies the voltage parameter by applying offset values to data voltages in specific source channels. The channel controller adjusts the voltage level of data signals by adding or subtracting offset values, thereby compensating for load deviations in pixel columns with alternating sub-pixel arrangements. This parameter change enables the system to maintain display quality while using a reduced power consumption structure.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by stationary object

If pixel columns with alternating sub-pixels are used, then power consumption is reduced, but load deviation occurs causing display quality degradation

Engineering Contradiction:

Improvepower consumptionVSAvoiddisplay quality uniformity

Core Design Contradiction:

Use of energy by stationary objectVSManufacturing precision

Solution Approach 1:

The patent applies different offset values to different source channels based on their specific characteristics. The channel controller identifies source channels connected to pixel columns with alternating sub-pixel arrangements and applies compensatory offset values specifically to these channels, while leaving other channels unchanged. This localized compensation approach maintains display quality only where needed without unnecessarily increasing power consumption across the entire system.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The channel controller monitors the display panel structure and identifies pixel columns with alternating sub-pixel arrangements. Based on this feedback about the panel configuration, the controller automatically applies appropriate offset values to the affected source channels, ensuring display quality uniformity is maintained in response to the specific structural conditions.

Inventive Principle:

Principle #23Feedback

3Reliability

If additional data lines and source channels are added, then display quality is maintained, but device complexity increases

Engineering Contradiction:

Improvedisplay qualityVSAvoiddata line and source channel structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of applying offset compensation to all source channels, the patent applies the compensation only to the specific source channels connected to pixel columns with alternating sub-pixel arrangements. This partial action approach maintains display quality where needed without the excessive complexity of a universal compensation system, thereby balancing display quality maintenance with acceptable device complexity.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12475850B2Display apparatus

Publication Date: 2025.11.18 SAMSUNG DISPLAY CO LTD

AI summary

A display apparatus includes a display panel, a data driver and a channel controller. The display panel includes a first data line connected to third sub-pixels in first and third pixel columns, a second data line connected to second sub-pixels in a second pixel column, a third data line connected to first sub-pixels in a third pixel column, a fourth data line connected to second sub-pixels in a fourth pixel column, and an additional data line connected to first sub-pixels in the first pixel column. The data driver includes an additional source channel providing an additional data voltage to the additional data line, and adjusts a voltage level of the additional data voltage by applying an offset value. The channel controller selects the additional source channel among the plurality of source channels, and generates the offset value for the additional source channel.