MIPI Display Drivers with Virtual Channel Addressing
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Solution Overview
Problem
Conventional display driving systems using a single display driver are limited in supporting higher data channel numbers and display panels with higher resolutions due to the limited size of the driver IC, making it difficult to meet the increasing demands of modern electronic devices.
Innovation Solution
A data transmission method and display driving system that employs multiple display drivers, each configured with a virtual channel value, utilizing a host controller to provide commands with virtual channel address capability under the Mobile Industry Processor Interface (MIPI) to address and drive the display panel, allowing for higher data channel support and higher resolution displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single display driver is employed, then the device complexity is reduced, but the data channel number and display resolution support are limited
Solution Approach 1:
The patent divides the display driver functionality into multiple separate display drivers (first display driver, second display driver, etc.), each responsible for driving specific data channels. This segmentation allows the system to support more data channels and higher resolution displays than a single driver could handle, while keeping each individual driver IC relatively simple in design.
2Adaptability or versatility
If multiple display drivers are employed, then the data channel number and display resolution support are improved, but the device complexity increases
Solution Approach 1:
The patent introduces a controller that serves multiple functions: it controls the first display driver, controls the second display driver, and manages the overall system coordination. This universal controller approach consolidates control logic into a single component while enabling multiple display drivers to operate cooperatively, thus supporting more data channels without proportionally increasing overall system complexity.
3Ease of manufacture
If a single display driver is used, then the manufacturing cost is reduced, but the display resolution capability is limited
Solution Approach 1:
The patent segments the display driver functionality across multiple drivers, each handling specific data channels. This allows the system to achieve higher display resolution capabilities by distributing the driving burden across multiple simpler driver units, which can be manufactured more economically than a single complex high-resolution driver.
4Manufacturing precision
If multiple display drivers are used, then the display resolution capability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent employs a universal controller that manages multiple display drivers, consolidating control functionality into a single component. This approach enables the system to achieve high display resolution through multiple drivers while keeping manufacturing costs manageable by avoiding the need for multiple complex controller units and by optimizing the shared control architecture.
Data Source
AI summary
A data transmission method applied in a display, which includes a display panel, is provided. The data transmission method includes the following steps of: providing a host controller and n display drivers, n is a natural number greater than 1; providing a communication link under mobile industry processor interface (MIPI), connecting the host controller to the n display drivers; determining n virtual channel values Vc1-Vcn corresponding to the respective n display drivers; employing the host controller for providing a command with a virtual channel parameter through the communication link under MIPI; when the virtual channel parameter corresponds to an ith virtual channel values Vci, an ith display driver executing corresponding operations in response to the command, while the rest n−1 display drivers ignoring the command, wherein i is a natural number smaller than or equal to n.