Uniform Grid Structure Display Panel for Brightness Uniformity
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Solution Overview
Problem
Existing single-layer metal self-capacitive touchscreens exhibit uneven brightness due to differences in grid shapes between touch, lead, and shielding areas, affecting display quality.
Innovation Solution
A display panel design featuring a conductive layer with touch electrodes, leads, and dummy electrodes, all having the same grid structure shape, which are arranged to ensure uniform reflective effects and prevent uneven brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different grid shapes are used for touch area, lead area, and shield area, then each area can be optimized for its specific function, but reflective effects become different resulting in uneven brightness
Solution Approach 1:
The patent applies local quality by configuring different grid structures in different functional areas (touch area with touch electrodes, lead area with lead electrodes, shield area with shield electrodes) while maintaining consistent reflective properties through uniform grid body shapes and sizes across all areas, thus achieving both functional optimization and brightness uniformity
Solution Approach 2:
The patent uses homogeneity by ensuring that all grid bodies throughout the conductive layer have the same shape and size, creating uniform reflective effects across the entire display panel. This is achieved by making grid bodies in the touch area, lead area, and shield area consistent in their geometric properties while varying only in their spatial arrangement and connectivity patterns
2Illumination intensity
If grid structures are made uniform across all areas, then reflective effects become consistent improving brightness uniformity, but functional differentiation between touch, lead, and shield areas is reduced
Solution Approach 1:
The patent applies segmentation by dividing the conductive layer into distinct functional regions (touch area, lead area, shield area) with specifically arranged grid structures in each region. The grid bodies are segmented into different functional groups that maintain uniform appearance but serve different purposes through their specific configurations and connectivity patterns
Solution Approach 2:
The patent uses universality by designing grid bodies that serve multiple functions simultaneously. The same-shaped grid bodies function as touch electrodes in the touch area, lead electrodes in the lead area, and shield electrodes in the shield area, achieving functional differentiation through spatial arrangement rather than structural variation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The uniform grid structure of touch electrodes, leads, and dummy electrodes ensures consistent reflective effects across the display panel, significantly reducing uneven brightness and enhancing display quality.
Implementation Method 1
the touch electrodes, the leads, and the dummy electrodes all include a grid structure of a same shape... ensures consistent reflective effects across the display panel
Data Source
AI summary
A display panel and a mobile terminal are provided by the present disclosure, including a substrate and a conductive layer on the substrate. The conductive layer includes a plurality of touch electrodes, a plurality of leads, and a plurality of dummy electrodes, wherein each one of the leads is disposed between two adjacent ones of the touch electrodes, and each one of the dummy electrodes is disposed between one of the touch electrodes and one of the leads which are adjacent to each other. Each one of the leads is electrically connected between the corresponding touch electrode and a touch chip, and the dummy electrodes are electrically connected to neither the touch electrodes nor the leads. A shape of a grid structure of the touch electrodes, a shape of a grid structure of the leads, and a shape of a grid structure of the dummy electrodes are the same.