Display Drive Circuit Timing Controller I/O Port Segmentation
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Solution Overview
Problem
The existing display panel technologies face an insufficiency in the number of I/O ports, which limits the ability to handle multiple logic control signals effectively.
Innovation Solution
A drive circuit is designed with a timing controller and two drive signal output branches, each comprising trigger circuits, assignment circuits, and delay circuits, allowing for the generation of multiple logic levels from a single drive signal, enabling the output of adjustable logic levels without increasing the number of I/O ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple logic control signals are directly output through I/O ports of TCON IC, then each control signal can be independently transmitted, but the number of I/O ports becomes insufficient as control processes become more complicated
Solution Approach 1:
The patent segments a single drive signal into multiple logic control signals by dividing the timing controller's output into different pulse positions within one drive signal cycle. Each pulse position can represent a different logic state, enabling one I/O port to generate multiple control signals through temporal segmentation rather than requiring multiple simultaneous I/O ports.
Solution Approach 2:
The patent employs periodic drive signals where one complete cycle contains N pulses that sequentially output different logic states. By utilizing the periodic nature of display driving, the system encodes multiple control signals within the time-domain structure of a single periodic drive signal, allowing multiple logic control functions to be achieved through one I/O port interface.
2Adaptability or versatility
If the number of I/O ports is increased to handle multiple logic control signals, then port insufficiency is resolved, but the device structure becomes more complex and costly
Solution Approach 1:
The patent makes a single I/O port universal by enabling it to output multiple logic control signals through the innovative drive signal structure. One I/O port performs multiple functions by sequentially providing different logic states at different pulse positions within the drive signal cycle, eliminating the need for multiple dedicated I/O ports for different control signals.
Solution Approach 2:
The patent transitions from a spatial dimension solution (adding more I/O ports) to a temporal dimension solution (encoding multiple signals in time). By utilizing the time dimension within a single drive signal cycle, the system accommodates multiple logic control signals without increasing the physical number of I/O ports, thus avoiding structural complexity.
3Adaptability or versatility
If more logic control signals are needed for complicated control processes, then control functionality is enhanced, but the insufficient I/O ports become a bottleneck
Solution Approach 1:
The patent introduces dynamic signal encoding where the logic state of control signals is determined by the position of pulses within the drive signal cycle rather than by static I/O port assignments. This dynamic approach allows the single I/O port to adaptively provide different logic states at different times, enabling complicated control processes with sufficient functional capacity despite limited physical ports.
Data Source
AI summary
Disclosed are a drive circuit of a display device, a display device and a display panel. The drive circuit of the display device drives a first drive signal output branch and a second drive signal output branch to output a preset logic level signal separately by drive signals of a timing controller.