Display Driving Controller Frame Protocol for Scrambled Dummy Data

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Solution Overview

Problem

Existing display devices face challenges in maintaining signal integrity and reliability due to scrambled dummy data in frame protocol data, which affects the operation of data driving circuits.

Innovation Solution

The display device incorporates a driving controller that transmits unscrambled protocol data number and frame configuration data while scrambling dummy data, allowing the data driving circuit to determine the length of frame configuration data and ignore scrambled dummy data, thereby improving signal integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If scrambled dummy data is transmitted in frame protocol data, then signal integrity is degraded, but transmitting unscrambled data improves signal integrity

Engineering Contradiction:

Improvesignal integrityVSAvoiddata processing accuracy

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The frame protocol data is segmented into three distinct parts: protocol data number signal (unscrambled), frame configuration data (unscrambled), and scrambled dummy data. The data driving circuit processes each segment differently, using the unscrambled portions for reliable control information while ignoring the scrambled dummy data portion, thus maintaining signal integrity without losing essential control information.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The essential control information (protocol data number signal and frame configuration data) is extracted and transmitted in unscrambled form separately from the dummy data. This allows the data driving circuit to reliably receive and process control information while excluding the harmful scrambled dummy data from processing.

Inventive Principle:

Principle #2Taking out (Extraction)

2Productivity

If the data driving circuit processes all frame protocol data including dummy data, then processing complexity increases, but ignoring dummy data reduces complexity

Engineering Contradiction:

Improvedata processing efficiencyVSAvoidprocessing logic complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The dummy data is extracted and separated from the essential control data. The data driving circuit uses the protocol data number signal to determine the length of valid frame configuration data, then ignores the remaining scrambled dummy data, reducing processing complexity while maintaining productivity.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of processing all received data and filtering out dummy data, the system inverts the approach by designating specific data portions as dummy data from the start and configuring the circuit to ignore them by default, processing only the essential unscrambled control information.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12586541B2Display device having a driving controller for outputting frame protocol data and operating method of the display device

Publication Date: 2026.03.24 SAMSUNG DISPLAY CO LTD

AI summary

Disclosed is a display device including a display panel, a driving controller that transmits a data control signal, and a data driving circuit. The data driving circuit receives the data control signal and provides a data signal to the display panel based on the data control signal. The data control signal includes frame protocol data for setting an operation of the data driving circuit. The frame protocol data includes a protocol data number signal, frame configuration data, and scrambled dummy data.