Sensor Layer Timing for Multi-Input Detection in Display Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in achieving improved sensing performance through touch-based inputs, particularly in efficiently distinguishing between different types of inputs and optimizing the sensing frequency to enhance user interaction.
Innovation Solution
The electronic device incorporates a display layer and a sensor layer, where the sensor layer is driven to sense different types of inputs during a blank period, with a sensing frequency that can be double the frame frequency of the display layer, allowing for sequential sensing of multiple input types within a single frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor layer senses multiple types of inputs at the same frame frequency as the display layer, then the device operation is simple and synchronized, but the sensing performance and responsiveness to different input types are insufficient
Solution Approach 1:
The patent segments the sensing operation into different time periods within a frame: the blank period is dedicated to sensing the second type input (input device) at a higher frequency, while the data input period handles the first type input (touch). This temporal segmentation allows different sensing frequencies for different input types without requiring a completely separate sensing system, thereby improving sensing performance while maintaining manageable device complexity.
Solution Approach 2:
The patent implements dynamic sensing frequency adjustment where the sensor layer operates at different frequencies depending on the input type being sensed. During the blank period, the sensing frequency is doubled for the second type input, while during the data input period, it operates at the standard frame frequency for the first type input. This dynamic adaptation optimizes responsiveness for different input scenarios without permanently increasing system complexity.
2Speed
If the sensing frequency is doubled to improve responsiveness, then the response time to inputs is reduced, but the processing load and complexity increase
Solution Approach 1:
The patent employs periodic action by confining the doubled sensing frequency operations to specific periods (blank periods) rather than continuously operating at high frequency. The sensor layer alternates between high-frequency sensing during blank periods and standard-frequency sensing during data input periods. This periodic high-frequency operation achieves fast response times when needed while keeping the average processing load manageable, thus improving response time without proportionally increasing overall system complexity.
3Adaptability or versatility
If the blank period is extended to accommodate multiple sensing operations, then more input types can be sensed, but the data input period is reduced
Solution Approach 1:
The patent dynamically adjusts the allocation of time periods based on sensing requirements. By extending the blank period to accommodate multiple sensing operations for different input types, the system achieves greater versatility in detecting various inputs. The data input period is相应 reduced, but this trade-off is acceptable because touch-based first type inputs can still be sensed at the standard frame frequency, maintaining adequate performance while enabling enhanced multi-input detection capability.
Data Source
AI summary
An electronic device includes a display layer having pixels and configured to operate in units of one frame including a blank period and a data input period, and a sensor layer disposed on the display layer, and configured to sense a first type input and a second type input different from the first type input, wherein the sensor layer may be driven to sense the first type input and the second type input in the blank period, and, in one frame, a number of times that the second type input is sensed may be greater than a number of times that the first type input is sensed.