Touch Control Display Device with Cross Network Conductive Units
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Solution Overview
Problem
Prior touch control display devices have large thickness, complex preparation processes, and limited flexibility due to the integration of sensing electrodes and organic light-emitting electrodes in a single layer, leading to signal cross-talk and reduced light transmittance.
Innovation Solution
A touch control display device with a substrate and organic light-emitting diodes having separate first and second electrodes, encapsulation layers, and a touch control layer forming a cross network of conductive units, where the second electrodes are connected in series and the conductive units are insulated, reducing thickness and increasing light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the second sensing electrodes and opposite electrodes are combined in a single layer, then the thickness of the touch control display device is reduced to a certain extent, but signal cross-talk occurs and display quality deteriorates
Solution Approach 1:
The patent segments the electrodes into separate layers: the first sensing electrodes are in the first touch control sensing layer, while the second sensing electrodes and opposite electrodes are separately formed in the composite layer. This spatial segmentation prevents signal cross-talk while maintaining reduced thickness through the integrated composite layer structure.
Solution Approach 2:
The patent transitions from a two-dimensional mixing of electrodes in a single layer to a three-dimensional layered structure. By arranging electrodes in different layers (first touch control sensing layer and composite layer) with vertical separation, the patent eliminates signal cross-talk while maintaining the thickness reduction benefit through the integrated composite layer design.
2Reliability
If the first sensing electrodes and second sensing electrodes are arranged in separate layers, then signal cross-talk is prevented, but the overall complexity of preparation steps increases due to requiring an insulation layer
Solution Approach 1:
The patent merges the second sensing electrodes and opposite electrodes into a single composite layer, which simplifies the preparation process. This merging approach reduces the number of separate fabrication steps while still maintaining the necessary insulation between the first sensing electrodes (in the first touch control sensing layer) and the second sensing electrodes (in the composite layer) through the substrate structure.
Solution Approach 2:
The composite layer serves multiple functions: it contains the second sensing electrodes for touch control functionality and the opposite electrodes for organic light-emitting component functionality. This multi-functionality reduces the overall number of layers and preparation steps while preventing signal cross-talk through the inherent insulation provided by the substrate and layer structure.
3Ease of manufacture
If the first touch control sensing layer is arranged on the surface of the upper substrate, then the structure is easier to manufacture, but the device thickness increases and light transmittance decreases
Solution Approach 1:
The patent merges the touch control sensing layer with the organic light-emitting component layers to form an integrated composite layer. This merging eliminates the need for a separate first touch control sensing layer on the upper substrate surface, thereby reducing device thickness and improving light transmittance while maintaining manufacturing ease through the unified structure.
Solution Approach 2:
The composite layer serves dual purposes: it functions as both the touch control sensing layer (containing second sensing electrodes) and the organic light-emitting component layer (containing opposite electrodes). This multi-functionality eliminates the need for separate layers, reducing overall device thickness and improving light transmittance while simplifying the manufacturing process.
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 solution results in a thinner, more flexible touch control display device with improved light-emitting efficiency and simplified preparation processes, reducing complexity and increasing product yield.
Implementation Method 1
an organic light-emitting layer
Data Source
Figure 1~2
Figure 3
AI summary
There is provided a touch control display device, wherein, second electrodes in the organic light-emitting diodes are connected in series in the same layer in a first direction so as to form a plurality of first conductive units (105); the touch control layer comprises a plurality of second conductive units (107) arranged in parallel in a second direction, the first conductive units (105) and the second conductive units (107) are configured to be insulated from each other and to form a cross network. A touch control structure is formed by the cooperation of the first conductive units (105) consisting of the second electrodes and the second conductive units (107) in the touch control layer, thereby reducing the thickness of the touch control display device. Only the first encapsulation layer (106), the touch control layer and the second encapsulation layer (108) are configured on the light-exiting surface of the organic light-emitting diodes, which not only has a compact structure but also effectively increases the light-emitting efficiency of the touch control display device. There is also provided a preparation method of the touch control display device, wherein, during the preparation process of the second electrodes, the second electrodes are formed into first conductive units (105) that cooperate with the second conductive units (107) in the touch control layer to constitute a touch control structure, which is a simple preparation method with low process cost.