Mesh Touch Electrodes for Display Areas with Integrated Components
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Solution Overview
Problem
Display devices face challenges in expanding their display areas to accommodate electronic components while maintaining effective touch sensing capabilities, particularly in areas where electronic components are integrated, leading to potential reductions in sensing sensitivity.
Innovation Solution
A display device design featuring a touch sensing layer with conductive lines having mesh patterns and overlapping structures that extend between pixel groups, allowing for effective touch sensing even in areas with integrated electronic components, and an insulating layer to minimize interference and maintain light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display area is extended to include areas with electronic components, then the display functionality is improved, but the touch sensing sensitivity deteriorates
Solution Approach 1:
The display area is divided into a first display area without electronic components and a second display area with electronic components. The touch sensing layer is correspondingly segmented, with electrodes arranged in the first display area and pixel groups with transmission areas in the second display area, allowing each segment to be optimized for its specific function while maintaining overall touch sensing capability across the extended display area.
Solution Approach 2:
Different regions of the display panel are given different local qualities: the first display area has continuous electrodes for optimal touch sensing, while the second display area has pixel groups with transmission areas to accommodate electronic components. The conductive lines are specifically designed with mesh patterns and openings to provide both electrical connectivity and light transmittance in the second display area, maintaining touch sensing functionality despite the presence of electronic components.
2Measurement precision
If conductive lines are arranged to provide touch sensing in the second display area, then touch sensing capability is improved, but light transmittance deteriorates
Solution Approach 1:
The conductive lines in the second display area are designed with mesh patterns that include multiple openings. These porous-like structures allow light to pass through while still providing sufficient electrical conductivity for touch sensing. The openings in the conductive lines correspond to the pixel groups, creating a structure that simultaneously achieves both touch sensing capability and light transmittance in the second display area.
Solution Approach 2:
The touch sensing layer employs composite conductive line structures combining mesh patterns with opening patterns. This composite design integrates the light-transmitting properties of open structures with the electrical conductivity of continuous conductive paths, achieving a balance between light transmittance and touch sensing capability in regions with electronic components.
3Illumination intensity
If pixel groups with transmission areas are used in the second display area, then light transmittance is improved, but touch sensing sensitivity deteriorates
Solution Approach 1:
The second display area is segmented into pixel groups with transmission areas between them. This segmentation allows light to pass through the transmission areas while the pixel groups maintain touch sensing capability. The conductive lines are arranged to connect these pixel groups, ensuring continuous touch sensing coverage across the entire second display area despite the segmented structure.
Solution Approach 2:
The pixel groups in the second display area are designed to serve multiple functions: they provide light emission/display functionality while simultaneously serving as touch sensing elements. The transmission areas between pixel groups facilitate light transmittance, while the pixel groups themselves and the connecting conductive lines maintain touch sensing sensitivity, making the second display area universally functional for both display and touch interaction.
Data Source
AI summary
A display device and an electronic device including the same are provided. The display device includes: a display panel including a plurality of first pixels in a first display area and a plurality of second pixels in a second display area and form pixel groups spaced apart from each other with a transmission area therebetween; and a touch sensing layer including a plurality of electrodes on the display panel, wherein each of the plurality of electrodes includes first conductive lines having a mesh pattern, the first conductive lines including a plurality of first openings that respectively correspond to at least one of the first pixels, and at least one of the plurality of electrodes includes second conductive lines having a mesh pattern, the second conductive lines including a plurality of second openings that respectively correspond to at least one of the second pixels.