Master-Slave Data Driver Segmentation for Display Power Reduction

Solution Overview

Problem

Traditional display devices are large and consume significant power, limiting their efficiency and portability.

Innovation Solution

A display device architecture that includes a signal controller, master data driver, and slave data driver, utilizing sampling clock signals and clock generators to efficiently process and transmit image data, reducing power consumption and device size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If traditional display device architecture is used, then image display function is achieved, but device size and power consumption increase

Engineering Contradiction:

Improvepower consumptionVSAvoiddevice architecture

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The data driver is divided into a master data driver and a slave data driver. The master data driver receives image data from the signal controller and generates a slave clock signal, while the slave data driver receives clock signals from the master data driver. This segmentation reduces the complexity and power consumption of each individual driver component while maintaining the overall display function.

Inventive Principle:

Principle #1Segmentation

2Volume of moving object

If traditional display device architecture is used, then image display function is achieved, but physical size increases

Engineering Contradiction:

Improvedevice sizeVSAvoiddevice architecture

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The data driver is divided into a master data driver and a slave data driver. The master data driver receives image data from the signal controller and generates a slave clock signal, while the slave data driver receives clock signals from the master data driver. This segmentation reduces the complexity and power consumption of each individual driver component while maintaining the overall display function.

Inventive Principle:

Principle #1Segmentation

3Use of energy by moving object

If master data driver generates slave clock signal using master image signal, then power consumption and device size are reduced, but signal processing complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidsignal processing

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The master data driver performs multiple functions including sampling image data, generating slave clock signals, and transmitting data to the slave data driver. By making the master data driver self-sufficient in generating its own slave clock signal from the master image signal, the system eliminates the need for separate external clock generation circuits, thereby reducing overall power consumption and device size despite the increased processing load on the master driver.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8462142B2Data driving apparatus and display device using the same

Publication Date: 2013.06.11 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes; a signal controller which outputs a master image signal having first data information and second data information, a master data driver which samples the first data information and the second data information from the master image signal using a first sampling clock signal, generates a slave clock signal using the master image signal, and generates a slave image signal, which corresponds to the second data information, using the slave clock signal, and a slave data driver connected to the master data driver in a cascade manner, wherein the slave data driver samples the second data information from the slave image signal.