Cascaded Sub-Pixel Display Circuit Reducing Data Line Count

Solution Overview

Problem

Large-sized electronic display devices require a large number of data lines to maintain image quality, leading to high power consumption.

Innovation Solution

The display circuit design cascades two sub-pixels to receive data voltages via a single data line, reducing the number of data lines needed by half and optimizing the connection of gate and data lines to decrease power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the number of pixels is increased to maintain image quality in large-sized display devices, then the displaying quality is improved, but the number of data lines increases and power consumption increases

Engineering Contradiction:

Improvedisplaying qualityVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

Each pixel is segmented into two sub-pixels (first sub-pixel and second sub-pixel) that are connected in cascade. The first sub-pixel receives a first data signal through a first data line, and the second sub-pixel receives a second data signal through a second data line. This segmentation allows shared use of data lines across multiple pixels, reducing the total number of data lines required and thereby reducing power consumption while maintaining the required displaying quality through increased pixel density.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If the number of pixels is increased to maintain image quality in large-sized display devices, then the displaying quality is improved, but the number of data lines increases

Engineering Contradiction:

Improvedisplaying qualityVSAvoidnumber of data lines

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

Each pixel is segmented into two sub-pixels (first sub-pixel and second sub-pixel) that are connected in cascade. The first sub-pixel receives a first data signal through a first data line, and the second sub-pixel receives a second data signal through a second data line. This segmentation allows shared use of data lines across multiple pixels, reducing the total number of data lines required and thereby reducing power consumption while maintaining the required displaying quality through increased pixel density.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first data line and second data line are shared across multiple pixels. Each data line serves multiple sub-pixels in different pixels, making the data lines multi-functional. For example, the first data line carries signals to first sub-pixels in multiple pixels, and the second data line carries signals to second sub-pixels in multiple pixels. This universal usage reduces the total number of data lines needed in the display device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8330885B2Display circuit adapted for a display device and display device

Publication Date: 2012.12.11 SAMSUNG DISPLAY CO LTD

AI summary

A display circuit adapted for a display device and the display device are provided. The display device comprises a gate drive device, a data drive device and the display circuit. The display circuit comprises at least one display unit which has four pixels. Each of the pixels has two sub-pixels, each of which has a transistor coupled to a pixel electrode. The transistors of the two sub-pixels of each of pixels are cascaded to electrically connect to the data drive device. The transistors of the two sub-pixels of each of pixels are electrically connected to the gate drive device, respectively, to receive signals, provided from the gate drive device, as switching signals for determining whether a data voltage provided by the data drive device is received or not.