Integrated Display Controller for Signal Interference Reduction
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Solution Overview
Problem
As display devices become thinner and larger, interference between various components such as touch sensors, display panels, and fingerprint recognition systems increases, leading to degraded performance in multi-functional display devices.
Innovation Solution
An integrated display controller is implemented as a single semiconductor chip, incorporating digital circuits for image processing, touch data handling, fingerprint recognition, and bio-signal processing, which communicates internally to manage and reduce interference between components, allowing for efficient operation of display, touch sensing, and fingerprint authentication functions without waking up the application processor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple components (touch sensor, display panel, fingerprint recognition system) are integrated into a single display device, then the device provides more functions, but interference between components increases and performance degrades
Solution Approach 1:
The patent divides the control functions into separate dedicated chips: a display driver chip for controlling the display panel, a touch controller chip for processing touch sensor data, and a fingerprint sensor chip for fingerprint recognition. This segmentation isolates each functional component, reducing electromagnetic interference and signal noise between components while maintaining all required functions.
2Volume of moving object
If display devices become thinner and larger, then the device size and form factor improve, but interference between components increases
Solution Approach 1:
By separating control functions into distinct chips with dedicated signal paths, the patent reduces electromagnetic coupling and interference between components. This is particularly important in thin devices where component spacing is reduced, as each chip handles only its specific function, minimizing cross-talk and signal interference.
3Reliability
If separate chips are used for each component, then component interference is reduced, but device complexity and manufacturing cost increase
Solution Approach 1:
The display driver chip is designed with multi-functionality, capable of controlling both the display panel and processing touch sensor signals through separate interfaces. This universal approach reduces the total number of chips needed while maintaining the benefits of functional separation, as one chip performs multiple roles that would otherwise require separate dedicated components.
Data Source
AI summary
A display chipset structure that is based on an integrated display controller is provided. The display controller includes including a display processor comprising a first digital circuit, and configured to receive image data from an application processor (AP) and output the image data to a first component driver chip configured to drive a gate line and a source line of a display panel; and a touch processor comprising a second digital circuit, and configured to receive touch data from a second component driver chip configured to drive sensing electrodes of a touch panel. The display controller is implemented as one semiconductor chip and separated from each of the first and second component driver chips, and the display processor and the touch processor communicate with each other through an internal interconnection of the one semiconductor chip.