Parallel Light Sensing Branches for Dynamic Range Adaptation
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Solution Overview
Problem
Existing light sensing detection circuits in display technology have fixed sensitivity and are limited to specific light intensity environments, failing to meet requirements for both high sensitivity and wide detection ranges.
Innovation Solution
Incorporating multiple light sensing detection branches connected in parallel, each with a storage capacitor of varying capacitance, allowing for selective activation based on ambient light intensity to achieve high sensitivity under weak light and wide detection range under strong light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single light sensing detection branch with fixed sensitivity is used, then the circuit structure is simple, but the detection range is limited to fixed light intensity environments
Solution Approach 1:
The light sensing detection circuit is divided into multiple parallel branches, where each branch contains a light sensing detection unit and a storage capacitor with different capacitance values. This segmentation allows each branch to be optimized for different light intensity ranges, enabling the system to adapt to various environments while maintaining a relatively simple overall structure through modular design.
Solution Approach 2:
The circuit implements dynamic adaptability by allowing different branches to be selectively activated based on ambient light intensity. The system can dynamically switch between branches with different capacitance values to match the current lighting conditions, transforming a static fixed-sensitivity circuit into a dynamic multi-range detection system.
2Measurement precision
If multiple light sensing detection branches with different capacitances are used, then sensitivity and detection range are improved, but the circuit structure becomes more complex
Solution Approach 1:
Each parallel branch is designed with specific local characteristics - different capacitance values in storage capacitors - to optimize performance for particular light intensity ranges. This local quality differentiation allows each branch to excel in its designated range while the overall system covers a broad spectrum through the combination of specialized branches.
3Adaptability or versatility
If a fixed sensitivity light sensing detection unit is used, then the circuit design is simple, but it cannot meet requirements for both high sensitivity and wide detection range
Solution Approach 1:
The light sensing detection system achieves multi-functionality by integrating multiple detection branches with different capacitance values into a single unified circuit. This universal design allows the same physical circuit to perform multiple detection functions across different light intensity ranges, effectively making one system serve multiple purposes without requiring separate dedicated circuits for each application scenario.
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
This approach enables a light sensing detection unit with enhanced sensitivity and dynamic detection range, expanding its application scope and improving user experience by adapting to different light environments.
Implementation Method 1
a light sensing detection branch of the N light sensing detection branches includes a storage capacitor
Data Source
AI summary
Display panel, light sensing detection method thereof and display device are provided. The display panel includes a plurality of light sensing detection units. A light sensing detection unit of the plurality of light sensing detection units includes a light sensing detection circuit. The light sensing detection circuit corresponding to a same light sensing detection unit includes N light sensing detection branches connected in parallel, a light sensing detection branch of the N light sensing detection branches includes a storage capacitor, and N≥2. The N light sensing detection branches include a first light sensing detection branch and a second light sensing detection branch. The storage capacitor includes a first storage capacitor located in the first light sensing detection branch and a second storage capacitor located in the second light sensing detection branch. A capacitance of the first storage capacitor is greater than a capacitance of the second storage capacitor.