Display Backplane Shared Detection Circuit for Mini LED Panels
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Solution Overview
Problem
The excessive number of detection circuits in Mini LED display panels leads to low light transmission rates and circuit yields due to complex circuitry and numerous electronic devices.
Innovation Solution
A display backplane design where a single detection circuit is shared among multiple light-emitting units, with a switch module controlling conduction between the detection circuit and each light-emitting unit, reducing the number of detection circuits and circuit complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each light-emitting unit is equipped with a corresponding detection circuit, then the detection accuracy and compensation effectiveness are improved, but the number of electronic devices increases and circuit complexity increases, resulting in reduced light transmission rate and circuit yield
Solution Approach 1:
Multiple detection circuits are merged into a single shared detection circuit. The patent implements a detection circuit that can detect voltages of source electrodes for multiple driving transistors across different light-emitting units, replacing the conventional approach where each light-emitting unit has its own dedicated detection circuit. This merging reduces the total number of electronic devices while maintaining detection coverage.
Solution Approach 2:
The detection circuit is designed with multi-functionality to serve multiple light-emitting units. By enabling a single detection circuit to detect voltages across multiple source electrodes of driving transistors in different light-emitting units, the circuit achieves universal detection capability, thereby reducing overall circuit complexity and device count.
2Measurement precision
If each light-emitting unit is equipped with a corresponding detection circuit, then the detection coverage is improved, but the light transmission rate is reduced due to increased number of electronic devices
Solution Approach 1:
The patent merges multiple detection circuits into one shared detection circuit that can detect voltages across multiple light-emitting units. This consolidation reduces the total number of electronic devices in the light-emitting unit, thereby increasing the light transmission rate while preserving comprehensive detection coverage through the shared circuit's ability to monitor multiple source electrodes.
3Measurement precision
If each light-emitting unit is equipped with a corresponding detection circuit, then the detection capability is improved, but the circuit yield is reduced due to increased number of electronic devices
Solution Approach 1:
The patent combines multiple detection circuits into a single shared detection circuit that serves multiple light-emitting units. This merging reduces the total number of electronic devices and circuit interconnections, thereby improving circuit yield and reliability by minimizing potential failure points while maintaining comprehensive detection capability across all light-emitting units.
Data Source
AI summary
Provided are a display backplane and a mobile terminal. The display backplane includes a plurality of light-emitting units and at least one detection circuit. Each of the light-emitting circuits includes a driving transistor. Each of the detection circuits is electrically connected to source electrodes of the driving transistors in at least two of the light-emitting units, at least for detecting voltages of the source electrodes of the driving transistors in the two corresponding light-emitting unit.