AMOLED Power Management Chip ID Generation via Pulse Control
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Solution Overview
Problem
Conventional AMOLED display devices face permanent damage during installation due to ID circuit errors on printed circuit boards, and existing solutions occupy IO resources and increase product costs, especially when AD functions and IO interfaces are insufficient.
Innovation Solution
The AMOLED display device integrates an ID generation module and handshake-protocol module within the power management chip, allowing the main control processor to send digital signals via a pulse control line to regulate voltages and generate ID signals, enhancing compatibility and control reliability without requiring external ID circuits or software upgrades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an ID identification circuit is added to the printed circuit board, then the power management chip can be identified, but the risk of ID voltage error during assembly increases, causing permanent damage to the AMOLED display device
Solution Approach 1:
The ID identification function is extracted from the external printed circuit board and integrated into the power management chip itself. The patent moves the ID circuit from being an external component on the PCB to being an internal component within the power management chip, eliminating the external ID circuit that causes assembly errors.
Solution Approach 2:
The ID identification circuit is merged with the power management chip into a single integrated unit. The patent combines what were previously separate components (external ID circuit and power management chip) into one unified chip, reducing the number of external connections and potential error points during assembly.
2Ease of operation
If the main control processor uses IO resources for ID identification, then the power management chip can be controlled, but the IO resource occupation increases and additional AD conversion circuits are needed, increasing product cost
Solution Approach 1:
The ID identification function is extracted from the main control processor's IO resources and relocated to the power management chip. This extraction eliminates the need for the main control processor to dedicate IO pins for ID identification, freeing up those resources for other functions.
Solution Approach 2:
The power management chip performs its own ID identification internally without requiring external assistance from the main control processor's IO resources. The chip is self-sufficient in identifying itself and managing its power functions, reducing the burden on the main control processor.
3Adaptability or versatility
If resistor divider is used for ID voltage derivation, then the power management chip can be distinguished, but the assembly process risk increases, causing permanent damage to the AMOLED display device
Solution Approach 1:
The ID identification circuit is merged into the power management chip, eliminating the need for external resistor dividers and their associated assembly processes. This integration ensures that the ID identification functionality is built-in and does not require separate assembly steps that could introduce errors.
Solution Approach 2:
The external resistor divider circuit is extracted and removed from the design. By taking out this external component and replacing it with an internal integrated solution, the patent eliminates the assembly risks associated with external resistor dividers while maintaining the necessary ID identification capability.
Data Source
AI summary
The present disclosure provides an AMOLED display device, which comprises a main control processor, a driving integrated chip (IC), a power management chip, and a pulse control line. The power management chip generates a voltage signal, after receiving the digital signal. The power management chip comprises an identification (ID) generation module. The ID generation module comprises a control protocol of the power management chip. The ID generation module is configured to generate an ID signal of the power management chip according to the control protocol of the power management chip.