Shared Data Line Time-Multiplexed Sub-Pixel Control

Solution Overview

Problem

In electronic devices, the peripheral region around the display area is inefficiently utilized due to the need for multiple data lines, leading to increased power consumption and reduced display area proportion.

Innovation Solution

The electronic device design couples sub-pixels of different colors to the same data line, allowing them to receive data signals successively, reducing the frequency and amount of voltage changes, thereby minimizing power consumption and the number of required data lines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If multiple data lines are used to transmit data signals to sub-pixels of different colors simultaneously, then the display refresh speed is improved, but the area of peripheral circuits and power consumption increase

Engineering Contradiction:

Improvedisplay refresh speedVSAvoidarea of peripheral circuits

Core Design Contradiction:

SpeedVSArea of stationary object

Solution Approach 1:

The patent merges multiple data lines into a single shared data line that sequentially transmits data signals to sub-pixels of different colors. Instead of having separate data lines for red, green, and blue sub-pixels, the invention combines these into one data line that time-multiplexes data transmission, thereby reducing the number of data lines and the area of peripheral circuits while maintaining display refresh capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements periodic action by sequentially transmitting data signals to sub-pixels of different colors in a time-multiplexed manner. The single data line alternates between transmitting data to red, green, and blue sub-pixels in a periodic sequence, controlled by scan signals that enable periodic data transmission without requiring simultaneous multiple data lines

Inventive Principle:

Principle #19Periodic action

2Speed

If multiple data lines are used to transmit data signals to sub-pixels of different colors simultaneously, then the display refresh speed is improved, but the power consumption increases

Engineering Contradiction:

Improvedisplay refresh speedVSAvoidpower consumption

Core Design Contradiction:

SpeedVSLoss of energy

Solution Approach 1:

The patent merges multiple data lines into a single shared data line that sequentially transmits data signals to sub-pixels of different colors. Instead of having separate data lines for red, green, and blue sub-pixels, the invention combines these into one data line that time-multiplexes data transmission, thereby reducing the number of data lines and the area of peripheral circuits while maintaining display refresh capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements periodic action by sequentially transmitting data signals to sub-pixels of different colors in a time-multiplexed manner. The single data line alternates between transmitting data to red, green, and blue sub-pixels in a periodic sequence, controlled by scan signals that enable periodic data transmission without requiring simultaneous multiple data lines

Inventive Principle:

Principle #19Periodic action

3Area of stationary object

If the number of data lines is reduced by coupling sub-pixels of different colors to the same data line, then the area of peripheral circuits is reduced, but the display refresh speed may decrease

Engineering Contradiction:

Improvearea of peripheral circuitsVSAvoiddisplay refresh speed

Core Design Contradiction:

Area of stationary objectVSSpeed

Solution Approach 1:

The patent implements periodic action by sequentially transmitting data signals to sub-pixels of different colors in a time-multiplexed manner. The single data line alternates between transmitting data to red, green, and blue sub-pixels in a periodic sequence, controlled by scan signals that enable periodic data transmission without requiring simultaneous multiple data lines

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent applies dynamics by using dynamic scanning control to manage the sequential data transmission. The scan signals dynamically enable the data line to switch between different sub-pixel groups in a controlled sequence, allowing the system to adapt the transmission timing to maintain refresh performance despite using a single shared data line

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11183094B2Electronic device

Publication Date: 2021.11.23 INNOLUX CORP

AI summary

An electronic device includes a data line, a plurality of first scan lines, a plurality of first sub pixels, and a plurality of second sub pixels. The data line transmits a plurality of data signals. The plurality of first scan lines intersect the data line and transmit a plurality of first scan signals. The plurality of first sub pixels are coupled to the data line, and configured to emit first color light. The plurality of second sub pixels are coupled to the data line and configured to emit second color light different from the first color light. At least two of the plurality of first sub pixels receive at least two of the plurality of data signals successively according to at least two of the plurality of first scan signals.