Segmented Touch Electrode Structure for Large Display Sensitivity
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Solution Overview
Problem
As the area of light emitting display apparatuses increases, the load on touch electrodes provided on touch panels increases, leading to a decrease in touch sensitivity.
Innovation Solution
A light emitting display apparatus is designed with a touch electrode unit comprising a plurality of touch receiving electrodes separated from each other and a touch driving electrode spaced apart from these electrodes, allowing for effective touch sensing through a touch driving signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the area of light emitting display apparatus increases, then display size is improved, but touch sensitivity decreases
Solution Approach 1:
The touch electrode unit is divided into multiple touch receiving electrodes (first, second, third, and fourth touch receiving electrodes) that are spatially separated. Each receiving electrode pairs with a corresponding driving electrode to form independent touch sensing regions. This segmentation allows the large display area to maintain high touch sensitivity by distributing touch detection across multiple localized electrode pairs rather than relying on a single large electrode.
2Area of stationary object
If touch electrode area increases to cover larger display, then coverage is improved, but load on electrodes increases
Solution Approach 1:
The touch electrode unit is divided into multiple touch receiving electrodes (first, second, third, and fourth touch receiving electrodes) that are spatially separated. Each receiving electrode pairs with a corresponding driving electrode to form independent touch sensing regions. This segmentation allows the large display area to maintain high touch sensitivity by distributing touch detection across multiple localized electrode pairs rather than relying on a single large electrode.
Solution Approach 2:
Each touch receiving electrode is positioned and configured to overlap with a specific driving electrode in a localized region. The first touch receiving electrode overlaps with the first driving electrode, the second with the second driving electrode, and so on. This local quality approach ensures that each electrode pair is optimized for its specific location, allowing the entire large display area to function effectively without overloading any single electrode.
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
This configuration enhances touch sensitivity by effectively detecting touches using the touch receiving and driving electrodes, improving the overall performance of the display apparatus.
Implementation Method 1
a touch electrode unit on the light emitting device unit, the touch electrode unit including: a plurality of touch receiving electrodes that are separated from each other; and a touch driving electrode that is spaced apart from the plurality of touch receiving electrodes and overlaps the plurality of touch receiving electrodes
Implementation Method 2
a touch driving electrode configured to receive a touch driving signal, the touch driving electrode comprising a plurality of sides; and a plurality of touch receiving electrodes that are separated from each other, the plurality of touch receiving electrodes overlapping the touch driving electrode such that the plurality of touch receiving electrodes are disposed in an area enclosed by the plurality of sides of the touch driving electrode in a plan view of the light emitting display apparatus
Data Source
AI summary
A light emitting display apparatus is disclosed which senses a touch by using touch receiving electrodes and one touch driving electrode corresponding to the touch receiving electrodes. The light emitting display apparatus comprises a light emitting device unit including light emitting devices; and a touch electrode unit disposed on the light emitting device unit, wherein the touch electrode unit includes: touch receiving electrodes separated from each other; and a touch driving electrode disposed to be spaced apart from the touch receiving electrodes and corresponding to the touch receiving electrodes.