Pen Sensing Display Panel With Magnetic Shielding Layers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices that use a pen for input lack efficient sensing mechanisms, leading to reduced accuracy and increased thickness due to the need for additional components like digitizers.
Innovation Solution
An electronic device with a display panel and a circuit board, featuring a sensor layer with specific electrode arrangements and magnetic-field-shielding layers, capable of sensing pen inputs without a digitizer, thereby maintaining flexibility and reducing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a digitizer is added to enable pen sensing, then pen input sensing capability is improved, but device thickness increases
Solution Approach 1:
The patent combines the pen sensing function with the existing display panel structure by integrating electrode patterns directly into the display panel layers. The first and second electrode patterns are formed within the display panel's conductive layers, eliminating the need for a separate digitizer component and thus reducing overall device thickness while maintaining pen sensing capability.
Solution Approach 2:
The display panel is designed to serve multiple functions: it provides visual display output and simultaneously enables pen input sensing. The electrode patterns in the display panel serve dual purposes as both display conductive elements and sensing electrodes for pen input, reducing the need for additional dedicated sensing components.
2Measurement precision
If a digitizer is added to enable pen sensing, then sensing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges the sensing function into the display panel's existing conductive structure. The first and second electrode patterns are integrated within the display panel's conductive layers, sharing the same manufacturing process and structural framework, thereby reducing device complexity while maintaining sensing accuracy.
Solution Approach 2:
The display panel's own conductive structure serves the dual function of display and sensing. The electrode patterns within the display panel's conductive layers automatically provide both display functionality and pen sensing capability without requiring separate dedicated sensing components or additional complexity.
3Adaptability or versatility
If electrode patterns are arranged to sense pen input, then pen sensing capability is improved, but magnetic field interference increases
Solution Approach 1:
The patent introduces a shielding layer positioned between the electrode patterns and external components. This shielding layer acts as an intermediary that blocks magnetic field interference from affecting the pen sensing capability while allowing the electrode patterns to function effectively for pen input detection.
Solution Approach 2:
The patent utilizes the magnetic field-shielding layer to convert potential harmful magnetic field interference into a beneficial protective barrier. The shielding layer blocks external magnetic fields from interfering with the electrode patterns, thereby improving the reliability of pen sensing while maintaining the desired magnetic field characteristics for the sensing function.
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 device effectively senses pen inputs, improving accuracy and user experience while maintaining device flexibility and reducing thickness by eliminating the need for a digitizer.
Implementation Method 1
a first magnetic-field-shielding layer between the third electrodes of the display panel and the metal lower sheet, and a second magnetic-field-shielding layer between the connection lines of the circuit board and the metal lower sheet
Data Source
AI summary
An electronic device includes a display panel including a first area, a bending area at which the display panel is bent, a second area overlapping the first area, first electrodes arranged in a first direction in the first area, second electrodes arranged in a second direction in the first area, and crossing the first electrodes, and third electrodes in the first area, and overlapping with the first electrodes, a circuit board coupled to the display panel at the second area, and including connection lines arranged in the first direction, and respectively electrically connected to the third electrodes, a metal lower sheet between the display panel and the circuit board, a first magnetic-field-shielding layer between the third electrodes and the metal lower sheet, and a second magnetic-field-shielding layer between the connection lines of the circuit board and the metal lower sheet.