Display Driver IC Dynamic Data Path Selection
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Solution Overview
Problem
Display driver integrated circuits face challenges in reducing power consumption as display panel sizes increase, with existing technologies not effectively managing data paths to optimize energy usage based on operation modes.
Innovation Solution
A display driver integrated circuit that includes a memory unit, an image processing chain unit, and a data path selection unit, allowing for the activation of different data paths based on operation modes, with multiplexers to selectively route image data through various processing blocks, optimizing power consumption by altering the data path configuration between the external host, memory, and data driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the display driver integrated circuit uses a fixed data path configuration, then the structure is simple, but it cannot optimize power consumption based on different operation modes
Solution Approach 1:
The patent implements dynamic data path configuration by introducing a data path selection unit that can switch between different data paths based on operation modes. The first data path connects external host→memory unit→image processing chain unit→data driver, while the second data path connects external host→image processing chain unit→memory unit→data driver. This dynamic switching allows the system to optimize power consumption according to operational requirements without being locked into a fixed architecture.
Solution Approach 2:
The data path selection unit serves multiple functions by enabling the system to operate in different modes (first operation mode and second operation mode) with different data path configurations. This multi-functionality allows the same hardware infrastructure to adapt to varying power consumption requirements and operational scenarios, making the system versatile without requiring separate dedicated paths for each mode.
2Reliability
If the display driver integrated circuit activates all processing units continuously, then stable operation is maintained, but power consumption increases
Solution Approach 1:
The system dynamically adjusts which processing units are active based on operation mode. In the first operation mode, the data path flows through memory unit first, while in the second operation mode, image processing occurs before memory storage. This dynamic activation pattern allows the system to maintain stable operation when needed while reducing power consumption by keeping less critical units inactive during specific modes.
Solution Approach 2:
The patent changes the operational parameters of the data path configuration based on mode select signals. By altering the sequence and activation status of processing units through parameter changes in the data path selection, the system can maintain operational stability when required while minimizing power consumption during energy-saving modes, thus resolving the contradiction between reliability and energy usage.
Data Source
AI summary
A display driver integrated circuit includes a memory unit configured to store image data received from an external host, an image processing chain unit configured to perform image processing on the image data, a data driver configured to control data lines of a display panel based on the image data, and a data path selection unit configured to selectively activate, based on an operation mode of the display driver integrated circuit, one of a first data path and second data path for the image data. The first data path is formed by sequentially connecting the external host, the memory unit, the image processing chain unit and the data driver. The second data path is formed by sequentially connecting the external host, the image processing chain unit, the memory unit and the data driver.