Display Panel Load Compensation Units for Uniformity

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Solution Overview

Problem

Conventional display devices face adverse effects on display quality due to the positioning of optical elements, which impact the screen-to-body ratio and visual effects, particularly in borderless designs.

Innovation Solution

A display panel design that includes a border region with load compensation units connected to data lines, ensuring balanced load distribution across the panel by electrically connecting at least one first data line to multiple load compensation units, thereby compensating for the uneven load caused by the optical component region, improving display uniformity and visual effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If optical elements are positioned in the display device to achieve borderless design and higher screen-to-body ratio, then the visual effects and screen-to-body ratio are improved, but the display uniformity deteriorates due to uneven load distribution on data lines

Engineering Contradiction:
Improvescreen-to-body ratioVSAvoiddisplay uniformity
Core Design Contradiction:
Area of moving objectVSManufacturing precision

Solution Approach 1:

The patent applies local quality by introducing load compensation units specifically in the border region where data lines intersect with the optical component region. This creates a non-uniform distribution of compensation elements that locally balances the capacitive load caused by the optical element positioning, thereby maintaining display uniformity while preserving the borderless design with high screen-to-body ratio.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent implements preliminary anti-action by pre-compensating the capacitive load on data lines that will be affected by optical element positioning. The load compensation units are designed and positioned in advance during the display panel fabrication process to counteract the anticipated uneven load distribution, preventing display uniformity issues before they occur.

Inventive Principle:
Principle #9Preliminary anti-action

2Area of moving object

If data lines extend through the optical component region to support borderless design, then the screen-to-body ratio is improved, but parasitic capacitance and crosstalk increase causing display quality degradation

Engineering Contradiction:
Improvescreen-to-body ratioVSAvoidparasitic capacitance and crosstalk
Core Design Contradiction:
Area of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful effect of extended data lines through the optical component region by introducing load compensation units that transform the problematic parasitic capacitance into a controllable parameter. The compensation units are designed to match and neutralize the parasitic capacitance, thereby converting the harmful electrical characteristic into a balanced condition that maintains signal integrity and reduces crosstalk.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS11587479B2Display panel and display device
Publication Date: 2023.02.21 XIAMEN TIANMA MICRO ELECTRONICS
  • US11587479B2 patent drawing
  • US11587479B2 patent drawing
  • US11587479B2 patent drawing

AI summary

The present disclosure provides a display panel and a display device. The display panel includes a border region, an optical component region, and a main display region. The border region is provided with multiple load compensation units. At least one first data line is electrically connected to M load compensation units, so as to compensate for a load of the first data line, making the compensated load on the first data line and a load on the second data line are basically the same or tend to be the same. In this way, any display difference across different regions of the display panel due to a difference of the load on the first data line and the load on the second data line may be avoided, which in turn improves the display uniformity of the display panel and improves the display effect of the display panel.