Display Driving Circuit External Memory Reset
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Solution Overview
Problem
The complexity and increased costs associated with using non-volatile memory in power chips for display devices, leading to complicated printed circuit board layouts and prolonged packaging tests.
Innovation Solution
A driving circuit that eliminates the need for non-volatile memory in power chips by using a memory connected to a timing controller and power chip, where the timing controller reads and analyzes driving data from the memory and transmits it to the power chip, and includes a fault output terminal to reset both the timing controller and power chip in tandem.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-volatile memory is added to the power chip to store configuration information, then the configuration information can be saved after power-off, but the structure of the printed circuit board becomes complicated and test steps increase
Solution Approach 1:
The patent extracts the non-volatile memory component from the power chip and relocates it to an external position on the printed circuit board. This allows the power chip to function without internal memory while configuration information is still stored externally, thereby simplifying the power chip structure and reducing PCB complexity.
Solution Approach 2:
The patent segments the power chip into two separate functional modules: the power management function and the configuration storage function. By separating these functions into different components (power chip and external memory), the system achieves simpler individual module structures while maintaining complete functionality.
2Reliability
If non-volatile memory is added to the power chip to store configuration information, then the configuration information can be saved after power-off, but labor costs and material costs increase
Solution Approach 1:
The patent extracts the non-volatile memory from the power chip to reduce material costs. By using external memory components instead of integrated memory within the power chip, the manufacturing cost is reduced while still achieving the same configuration storage functionality.
Solution Approach 2:
The patent employs standard external memory components that are more cost-effective and easier to manufacture than integrating non-volatile memory into the power chip. This approach uses readily available, inexpensive components to achieve the required functionality at lower material and labor costs.
3Reliability
If non-volatile memory is added to the power chip, then configuration information can be saved after power-off, but packaging test steps increase
Solution Approach 1:
The patent extracts the memory function from the power chip to an external component, which simplifies the packaging process. External memory components can be tested and validated separately before integration, reducing the complexity and time required for packaging tests compared to testing integrated memory within the power chip.
Data Source
AI summary
A driving circuit, a driving method and a display device are disclosed. The driving circuit includes a memory, a timing controller and a power chip. The memory is connected to each of the timing controller and the power chip. The power chip includes a first analyzing module and a working module. The working module includes a fault output terminal. The timing controller includes a second analyzing module and a reset terminal. During a power-on phase, the timing controller reads and analyzes the driving data located in the memory through the second analyzing module, and transmits the analyzed driving data to the first analyzing module of the power chip for use by the power chip. During a fault phase, the fault output terminal outputs a fault signal, and the reset terminal receives the fault signal to control the timing controller and the power chip to reset in tandem.