Gate Driver Control Circuit for Dynamic Row-Scanning Order

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Solution Overview

Problem

Existing display technologies using gate-driver control signals for image display have inflexible scanning schemes, leading to high power consumption, especially for special images like Horizontal Stripes, as the scanning order is always fixed from top to bottom or bottom to up.

Innovation Solution

A gate driver control circuit that includes an encoder, decoder, and multiplexers to adjust timing-control signals based on instruction information, allowing for flexible adjustment of row-scanning signals and their order, enabling dynamic control of row-scanning signals to reduce power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If fixed scanning order (top-down or bottom-up) is used for gate-driver control signals, then the control circuit is simple, but power consumption increases for special images like Horizontal Stripes

Engineering Contradiction:
Improvecontrol circuit complexityVSAvoidpower consumption
Core Design Contradiction:
Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the scanning order adjustable rather than fixed. The gate driver control circuit can dynamically change the scanning sequence based on image characteristics, transitioning from a static top-down or bottom-up scan to an adaptive scan pattern that reduces power consumption for specific images like Horizontal Stripes while maintaining simplicity in the control circuit design

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of scanning order from fixed to variable. By allowing the scanning sequence to be reconfigured based on image data, the system optimizes power consumption without significantly increasing circuit complexity. The control circuit can modify scan parameters dynamically to match different display requirements

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If fixed scanning order is used for all images, then the control circuit is simple, but power consumption cannot be optimized for special images

Engineering Contradiction:
Improvecontrol circuit complexityVSAvoidpower consumption
Core Design Contradiction:
Device complexityVSLoss of energy

Solution Approach 1:

The system introduces dynamic adaptability to the scanning order based on image characteristics. For special images like Horizontal Stripes, the control circuit can switch to an optimized scanning sequence that reduces unnecessary transitions and lowers power consumption, while maintaining a simple overall circuit design that handles both fixed and variable scanning modes

Inventive Principle:
Principle #15Dynamics

3Use of energy by moving object

If scanning order is changed dynamically based on image data, then power consumption is reduced, but device complexity increases

Engineering Contradiction:
Improvepower consumptionVSAvoidcontrol circuit complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent implements dynamic scanning order adjustment with minimal increase in control circuit complexity. The gate driver control circuit incorporates mechanisms to detect image characteristics and automatically adjust scan sequences, achieving power optimization without requiring a completely complex redesign of the control architecture

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system optimizes power consumption by changing scan parameters dynamically while keeping the control circuit relatively simple. The patent demonstrates that parameter adjustment in the scanning order can be achieved through moderate circuit modifications rather than complete redesign, balancing power efficiency with circuit complexity

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11244594B2Gate driver control circuit, method, and display apparatus
Publication Date: 2022.02.08 BEIJING BOE DISPLAY TECH CO LTD
  • US11244594B2 patent drawing
  • US11244594B2 patent drawing
  • US11244594B2 patent drawing

AI summary

The present application discloses a gate driver control circuit including an encoder configured to encode instruction information to obtain a coded instruction and to transmit the coded instruction. The gate driver control circuit further includes a decoder coupled to the encoder and configured to decode the coded instruction to obtain the instruction information. Additionally, the gate driver circuit includes at least one multiplexer coupled to the decoder. Each multiplexer is configured to receive a first set of multiple timing-control signals and the instruction information, to adjust the first set of multiple timing-control signals to a second set of multiple timing-control signals based on the instruction information, and to output the second set of multiple timing-control signals. The gate driver control circuit further includes at least one gate-array sub-circuit. Each gate-array circuit is configured to output multiple row-scanning signals in response to the second set of multiple timing-control signals.