Display Panel Control Circuit Reduces Power via Pixel Scanning
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Solution Overview
Problem
As display device resolutions increase, so does power consumption, particularly in small-sized electronic devices, necessitating methods to reduce power usage without compromising image quality.
Innovation Solution
A control integrated circuit for display panels that includes a gate driver, source driver, and controller to selectively drive gate lines and supply data, generating switch control signals to activate pixels of the same color in sequence, thereby optimizing the activation of gate and data lines to minimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display resolution is increased, then image quality is improved, but power consumption increases
Solution Approach 1:
The patent segments the pixel array into multiple blocks and processes them in different scanning orders. By dividing the display into regions (e.g., first block with even rows, second block with odd rows) and activating them in an optimized sequence, the system reduces the number of times data lines need to be charged and discharged, thereby lowering power consumption while maintaining high resolution display quality
Solution Approach 2:
The patent implements dynamic scanning order adjustment where the activation sequence of gate lines and data lines is changed based on pixel color patterns. By dynamically modifying the scanning pattern to activate pixels of the same color continuously, the system minimizes capacitive charging/discharging operations, reducing power consumption without compromising the displayed image resolution
2Use of energy by moving object
If pixels of the same color are activated continuously, then power consumption is reduced, but data line activation order becomes complex
Solution Approach 1:
The patent divides the pixel array into multiple blocks (e.g., first block for even rows, second block for odd rows) and assigns different scanning orders to each block. This segmentation allows the system to implement complex color-based optimization strategies in a structured manner, where each block can be processed independently with its own optimized scanning pattern, making the overall control more manageable despite the complexity
Solution Approach 2:
The patent pre-determines the scanning order for different blocks based on their row patterns (even/odd rows) and color distributions. By calculating and storing the optimized scanning sequences in advance, the system avoids real-time complex calculations during operation, reducing the computational burden while still achieving the power-saving benefits of continuous same-color pixel activation
Data Source
AI summary
In one embodiment, the control integrated circuit includes a gate driver configured to selectively drive a plurality of gate lines associated with pixels in a display panel; a source driver configured to supply data to the display panel; and a controller configured to generate switch control signals for controlling a switch driver of the display panel, the switch driver for selectively supplying the data to a plurality of data lines. The controller is configured to control the gate driver and generate the switch control signals such that the plurality of gate lines are activated non-sequentially, and an order of pixels activated and associated with a same one of the plurality of data lines includes at least two pixels of a same color activated in sequence.