Display Driving Circuit for Partial Panel Data Reduction
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Solution Overview
Problem
Display panels waste computing resources and power consumption by processing unimportant images in inactive areas, even in partial display modes.
Innovation Solution
A display driving device that selectively operates in full or partial panel modes, reducing data transmission and processing in inactive areas by using different resolution display data based on the active display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If full-frame display data is transmitted and processed for the entire display area, then the display panel can operate in full panel display mode, but computing resources and power consumption are wasted when operating in partial panel display mode
Solution Approach 1:
The display area is segmented into active display area and inactive display area. The display driving device processes and transmits display data only for the active display area when operating in partial panel display mode, while the inactive area is excluded from data transmission and processing. This segmentation allows the system to adapt to different display modes without wasting resources on processing unimportant images in inactive areas.
Solution Approach 2:
Instead of processing the entire full-frame display data, the system performs partial action by processing only the portion of display data corresponding to the active display area. This partial processing approach reduces computing resources and power consumption while maintaining the necessary display functionality for the active area.
2Manufacturing precision
If full-resolution display data is transmitted for the entire display area, then the display quality is maintained, but data transmission bandwidth is occupied by unimportant images in inactive areas
Solution Approach 1:
The system extracts and transmits only the necessary display data corresponding to the active display area, excluding the unimportant images in the inactive display area. This extraction principle reduces the data transmission volume while maintaining display quality for the active area, as only the relevant portion of the display data is transmitted through the bandwidth.
3Ease of operation
If image processing is performed on the entire display data frame, then complete image enhancement can be applied, but computing resources are wasted on unimportant images in inactive areas
Solution Approach 1:
Image processing is applied locally only to the display data corresponding to the active display area, rather than uniformly processing the entire display data frame. This local quality approach ensures that computing resources are efficiently utilized by performing complete image enhancement only where necessary, while excluding the inactive area from processing operations.
Data Source
AI summary
The display driving device includes an interface circuit and a control circuit. The interface circuit receives a display data frame from a data stream provided by a processor to the control circuit. In a full panel display mode, the display data frame includes first resolution display data corresponding to the entire display area of the display panel, and the control circuit drives a plurality of data lines of the display panel based on the first resolution display data. In a partial panel display mode, the display data frame includes second resolution display data corresponding to a first partial display area of the display panel (but does not include display data corresponding to other display area in the display panel except the first partial display area), and the control circuit driving the data lines based on the second resolution display data.