Source Driver Decompressor for LCD Data Transmission
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Solution Overview
Problem
High data transmission rates in liquid crystal display (LCD) systems lead to increased power consumption, hardware costs, and difficulties in system safety certification, necessitating a reduction in image data transmission without compromising image quality.
Innovation Solution
A source driver with a decompressor, data latch units, and a digital-to-analog converter is used to receive compressed image data, decompress it, and convert it into analog signals, reducing data transmission rates by using a compressed image signal between the timing controller and the source driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high data transmission rate is used to display high quality and high frame rate, then image quality and frame rate are improved, but power consumption increases
Solution Approach 1:
The patent segments the data transmission process by introducing a decompressor that processes compressed image data line by line. The compressed image data is divided into multiple lines, and each line is decompressed and processed separately through data latch units before being converted to analog signals. This segmentation allows the system to transmit data at a lower rate while maintaining high frame rate display quality.
Solution Approach 2:
The patent introduces an intermediary decompressor between the timing controller and the source driver. This decompressor receives compressed image data from the timing controller, decompresses it into restored image data, and then provides the data to the source driver. This intermediary component enables efficient data transmission by handling the decompression process internally, allowing the system to operate at lower transmission rates without sacrificing display quality.
2Productivity
If high data transmission rate is used to display high quality and high frame rate, then image quality and frame rate are improved, but hardware costs increase
Solution Approach 1:
The patent segments the data processing functionality into distinct modules: a decompressor for handling compressed data, data latch units for storing and sequentially providing data, and a digital-to-analog converter for signal conversion. This modular segmentation allows each component to be optimized independently and reduces the overall hardware complexity compared to a monolithic high-speed transmission system.
Solution Approach 2:
The decompressor acts as an intermediary component that handles the complex decompression task internally. By placing this functionality within the source driver, the system avoids the need for external high-speed transmission hardware, thereby reducing overall hardware costs while maintaining high frame rate capability.
3Productivity
If high data transmission rate is used to display high quality and high frame rate, then image quality and frame rate are improved, but system safety certification becomes difficult
Solution Approach 1:
The decompressor serves as an intermediary that processes data internally at a controlled rate. By handling the data decompression within the source driver at a lower transmission rate, the system achieves better control over data handling timing and volume, which facilitates system safety certification while maintaining high frame rate display capability.
4Use of energy by moving object
If compressed image data is used to reduce data transmission rate, then power consumption and hardware costs are reduced, but data transmission rate must be reduced
Solution Approach 1:
The decompressor acts as an intermediary that receives compressed image data at a lower transmission rate, decompresses it internally, and then provides the restored image data to the source driver. This allows the system to operate at lower data transmission rates while maintaining the ability to display high quality images at high frame rates.
Solution Approach 2:
The decompressor performs preliminary decompression of the compressed image data before the data is processed by the source driver. This preliminary action allows the system to reduce the data transmission rate while still maintaining the capability to display high quality images, as the decompression is completed in advance within the source driver.
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 decreases data transmission rates, thereby reducing power consumption and hardware costs while maintaining image quality, and allows for efficient operation within acceptable limits.
Implementation Method 1
The digital-to-analog converter is configured to sequentially receive the display data in order to convert the display data from a digital format into an analog format, so as to sequentially generate a plurality of analog output signals
Data Source
AI summary
A source driver, a driving circuit using the same and a display apparatus using the same are provided. The display apparatus includes a display panel, a timing controller and a source driver. The timing controller is configured to receive an external image signal to provide a compressed image signal. The source driver is configured to receive the compressed image signal, and has a decompressor configured to convert the compressed image signal into restored image data and provide a plurality of source driving signals to drive the display panel according to a plurality of display data of the restored image data.