Display Panel Staggered Sensing Layout for Touch-Pen Interference
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Solution Overview
Problem
Signal interference occurs between display panels and touch pens due to differing driving frequencies, leading to signal delays and impaired image display operations.
Innovation Solution
A display device design with specific arrangements of light emitting devices and input sensing parts, including staggered groupings and connection patterns, to prevent recognition of connection patterns and dummy electrodes, thereby minimizing signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection patterns are disposed under sensing parts to connect sensing parts, then sensing parts are connected, but connection patterns may be perceived from outside and signal interference occurs
Solution Approach 1:
The patent transitions from planar arrangement to three-dimensional staggered arrangement. Connection patterns are positioned at different heights and locations relative to sensing parts, creating a non-planar configuration that prevents visual perception while maintaining electrical connectivity. This spatial dimensionality change resolves the contradiction between connection functionality and visual imperceptibility.
Solution Approach 2:
The patent employs asymmetric positioning of connection patterns relative to sensing parts. Rather than symmetric or regular grid arrangements, connection patterns are offset and staggered in irregular positions that prevent them from being perceived as regular patterns from outside, while still achieving effective electrical connection between sensing elements.
2Adaptability or versatility
If display panel and touch pen operate at different driving frequencies, then各自功能独立, but signal interference occurs causing signal delay
Solution Approach 1:
The patent introduces shielding structures as intermediary elements between the display panel and touch pen components. These shielding structures act as mediators that block or filter electromagnetic interference signals, allowing both systems to operate at different frequencies independently while preventing signal corruption and delay.
Solution Approach 2:
The patent implements preliminary anti-interference measures by pre-positioning shielding structures and designing frequency isolation mechanisms before signal interference can occur. This proactive approach prevents signal delay and interference rather than correcting it after occurrence, maintaining reliable signal transmission despite different operating frequencies.
Data Source
AI summary
A display device, which includes a display panel including a plurality of first light emitting devices, a plurality of second light emitting devices, a plurality of third light emitting devices, and an input sensing part disposed on the display panel and including sensing parts. A distance between a first light emitting device, of the plurality of first light emitting devices, and an third light emitting device, of the plurality of third light emitting devices, is greater than a distance between the first light emitting device and an adjacent second light emitting device, of the plurality of second light emitting devices, and a width of a sensing part disposed between the first and third light emitting devices adjacent to each other is greater than a width of a sensing part disposed between the first and second light emitting devices adjacent to each other.