Alternating Data Lines for Luminance Uniformity in Divided Mobile Displays

Solution Overview

Problem

Mobile terminals with divided large screens experience luminance deviations between opposing areas, causing users to recognize boundaries due to differences in image output between the divided sections.

Innovation Solution

A mobile terminal design with a display panel divided into active areas controlled by two drivers, where data lines are alternately arranged to minimize luminance differences, and gray scale voltage generators have slight differences to synchronize image output, ensuring seamless integration of the divided images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the large screen is divided into two opposing areas controlled by separate drivers, then the productivity and functionality of the display device are improved, but luminance deviation occurs between the divided areas causing visible boundaries

Engineering Contradiction:

Improvedisplay functionalityVSAvoidluminance uniformity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The display device divides the large screen into two opposing active areas (first active area and second active area) that are controlled by separate first and second drivers. This segmentation allows independent control of each area while maintaining overall display functionality, resolving the contradiction between enhanced productivity through divided control and maintaining luminance uniformity across the entire display.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different data line arrangement patterns to different regions of the display. Specifically, first data lines are arranged in a first pattern in a first region and in a second pattern in a second region, with the arrangement designed to minimize luminance deviation. This local quality approach allows optimization of each region's data line configuration to achieve overall luminance uniformity while maintaining the benefits of divided control.

Inventive Principle:

Principle #3Local quality

2Device complexity

If data lines are arranged in separate regions for each driver, then the device complexity is reduced, but luminance deviation and boundary recognition occur

Engineering Contradiction:

Improvedriver configurationVSAvoidimage uniformity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The display device divides the large screen into two opposing active areas (first active area and second active area) that are controlled by separate first and second drivers. This segmentation allows independent control of each area while maintaining overall display functionality, resolving the contradiction between enhanced productivity through divided control and maintaining luminance uniformity across the entire display.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different data line arrangement patterns to different regions of the display. Specifically, first data lines are arranged in a first pattern in a first region and in a second pattern in a second region, with the arrangement designed to minimize luminance deviation. This local quality approach allows optimization of each region's data line configuration to achieve overall luminance uniformity while maintaining the benefits of divided control.

Inventive Principle:

Principle #3Local quality

3Area of stationary object

If the screen is expanded to provide a larger display area, then the area of the display is improved, but luminance deviation between divided areas becomes more noticeable

Engineering Contradiction:

Improvedisplay areaVSAvoidluminance consistency

Core Design Contradiction:

Area of stationary objectVSManufacturing precision

Solution Approach 1:

The display device divides the large screen into two opposing active areas (first active area and second active area) that are controlled by separate first and second drivers. This segmentation allows independent control of each area while maintaining overall display functionality, resolving the contradiction between enhanced productivity through divided control and maintaining luminance uniformity across the entire display.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different data line arrangement patterns to different regions of the display. Specifically, first data lines are arranged in a first pattern in a first region and in a second pattern in a second region, with the arrangement designed to minimize luminance deviation. This local quality approach allows optimization of each region's data line configuration to achieve overall luminance uniformity while maintaining the benefits of divided control.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11798488B2Mobile terminal having alternating first and second data lines arranged in an overlap area of an active area

Publication Date: 2023.10.24 LG ELECTRONICS INC

AI summary

A mobile terminal according to one embodiment is characterized by comprising: a display panel including active areas from which images are output; a first driver for controlling an image output from a first active area among the active areas; a second driver for controlling an image output from a second active area among the active areas; first data lines connected to the first driver to apply an image signal to the first active area; and second data lines connected to the second driver to apply an image signal to the second active area, wherein the first data lines and the second data lines may be provided in the active areas alternately in at least one area.