Host Controller Image Splitting for Multi-Display Drive Circuits
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Solution Overview
Problem
In multi-display drive circuit systems, establishing a data channel between display drive circuits to share pixel data for sub-pixel rendering increases the flexible printed circuit area, leads to electromagnetic interference (EMI), and electrostatic discharge (ESD), making it difficult to improve display resolution effectively.
Innovation Solution
The system splits a to-be-displayed image into sub-images with overlapping image pixels, allowing each display drive circuit to receive and display parts of the image without sharing pixel data, thereby avoiding the need for a data channel and reducing EMI and ESD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a data channel is established between display drive circuits to share pixel data for sub-pixel rendering, then pixel data sharing capability is improved, but the flexible printed circuit area increases
Solution Approach 1:
The patent extracts the pixel data sharing function from a dedicated data channel and relocates it to the existing display data transmission path. By having the host controller send overlapping column data in the display signal, the need for a separate data channel is eliminated, thus reducing the flexible printed circuit area while maintaining pixel data sharing capability for sub-pixel rendering.
2Adaptability or versatility
If a data channel is established between display drive circuits, then pixel data sharing capability is improved, but electromagnetic interference increases
Solution Approach 1:
The patent removes the separate data channel that causes electromagnetic interference by extracting the pixel data sharing function and integrating it into the existing display data transmission path. This eliminates the additional signal transmission path that would generate electromagnetic interference while preserving the necessary pixel data sharing for sub-pixel rendering.
3Adaptability or versatility
If a data channel is established between display drive circuits, then pixel data sharing capability is improved, but electrostatic discharge risk increases
Solution Approach 1:
The patent extracts the pixel data sharing function from a separate data channel and integrates it into the existing display data transmission path. This eliminates the additional electrical connection that would increase electrostatic discharge risk, while maintaining the capability for pixel data sharing necessary for sub-pixel rendering.
4Measurement precision
If the quantity of screen pixels is increased to improve display resolution, then display resolution is improved, but the area for placing screen pixels in active area is insufficient
Solution Approach 1:
The patent applies sub-pixel rendering technology where each screen pixel displays multiple color components by using neighboring screen pixels as reference. This allows the system to achieve high display resolution without requiring a proportional increase in the number of physical screen pixels in the active area, as the rendering algorithm synthesizes additional color information from adjacent pixels.
Data Source
AI summary
An electronic device includes a host controller. The host controller splits a to-be-displayed image into at least two sub images, where each sub image and an adjacent sub image thereof include at least one column of overlapping image pixels. The host controller sends the at least two sub images to at least two display drive circuits, so that the at least two display drive circuits can jointly drive a display screen to display the to-be-displayed image in a sub pixel rendering (SPR) manner.