Sensor Array Segmentation for Distortion-Free Light Sensing
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Solution Overview
Problem
Existing display apparatuses face challenges in accurately detecting external light without distortion, particularly in sensing circuits that rely on image sensors disposed in a matrix pattern, where simultaneous charging and reading of sensing signals across the matrix can lead to image distortion.
Innovation Solution
A sensing circuit comprising a sensor array with a light receiving part, a charging part, and a switching part, controlled by multiple controllers providing driving, switching, and control signals, allowing the sensor array to be charged during a first time period and discharged during a second time period, ensuring simultaneous and accurate sensing of external light across the matrix.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the sensor array is charged and read out simultaneously across the matrix, then the sensing speed is improved, but image distortion occurs
Solution Approach 1:
The sensor array is divided into multiple banks, with each bank containing multiple sensors that share common charging and reading control. This segmentation allows different banks to operate in different phases - some charging while others read out - thereby achieving both fast sensing speed and accurate image quality without distortion
2Productivity
If multiple sensors are charged simultaneously, then the productivity is improved, but signal interference increases
Solution Approach 1:
The charging and reading operations are performed in periodic cycles across different sensor banks. While one bank is charging its sensors, another bank is reading out its sensors, creating a staggered periodic operation pattern that maintains high productivity while preventing signal interference through temporal separation
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 proposed sensing circuit effectively senses external light without distortion by ensuring synchronized charging and reading of signals across the sensor array, enabling accurate image detection and display.
Implementation Method 1
The light receiving part outputs a sensing signal corresponding to an external light in response to a driving signal
Data Source
AI summary
A sensing circuit includes a sensor array, a first controller and a second controller. The sensor array is charged by a sensing signal corresponding to an external light in response to a driving signal during a first time period and discharged in response to a switching signal during a second time period. The first controller provides the driving signal to the sensor array. The second controller provides the switching signal to the sensor array.