Display Device Source Driver Timing Control via Embedded Clock
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Solution Overview
Problem
Current display devices cannot effectively control the operation sequence and operation time of multiple source drivers due to the lack of a mechanism for assigning unique information, leading to inefficiencies in data transmission and processing.
Innovation Solution
A display device that incorporates a timing controller generating input signals with embedded clock and data packets, including unique information, sequence information, and operation time information, allowing source drivers to selectively operate based on this data without relying on a carry input/output scheme, thereby enabling independent control of operation sequences and times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the carry input/output scheme is used for data transmission between source drivers, then data transmission can be achieved, but the operation sequence and operation time of source drivers cannot be controlled
Solution Approach 1:
The patent extracts the control function from the data transmission process by separating control data packets from pixel data packets. The control data packet contains unique information, sequence information, and operation time information that are extracted and processed independently by the source driver to control its operation, while pixel data is transmitted separately. This allows independent control of operation sequence and time without interfering with the data transmission function.
Solution Approach 2:
The input signal is segmented into two distinct types of data packets: control data packets containing unique information, sequence information, and operation time information; and pixel data packets containing actual pixel information. This segmentation allows the source driver to process control information separately from pixel data, enabling precise control of operation sequence and timing while maintaining efficient data transmission.
2Ease of operation
If unique information is assigned to each source driver with control data packets, then operation sequence and time can be controlled, but the data transmission protocol becomes more complex
Solution Approach 1:
The control data packet structure serves multiple functions simultaneously: it provides unique identification for each source driver, establishes operation sequence through sequence information, and controls operation timing through operation time information. This multi-functional control packet eliminates the need for separate control signals for each function, simplifying the overall control architecture despite the enhanced packet structure.
Solution Approach 2:
The control data packet acts as an intermediary that carries multiple control functions between the timing controller and source drivers. Instead of requiring separate control lines for unique identification, sequence control, and timing control, all these functions are mediated through the standardized control data packet structure, reducing signal line complexity while maintaining independent control capability.
3Device complexity
If the carry signal line is eliminated in favor of control data packets, then device complexity is reduced, but control precision over operation timing may be affected
Solution Approach 1:
The patent changes the control parameter from simple carry signals to comprehensive control data packets containing operation time information. This parameter change allows precise control of operation timing to be embedded within the data transmission protocol itself, maintaining timing precision while eliminating the need for separate carry signal lines. The operation time information parameter enables precise timing control through digital specification rather than analog signal timing.
Data Source
AI summary
Disclosed is a display device capable of assigning unique information to a plurality of source drivers and easily controlling an operation sequence and operation time. The display device may include: a timing controller configured to generate an input signal having a clock signal embedded between data signals each including a pixel data packet and a control data packet, and provide the input signal to a source driver; and a source driver configured to receive the input signal, sense pixel information of a display panel, and enabled to transmit the pixel information to the timing controller in response to preset information contained in the control data packet, and configured to transmit the pixel information to the timing controller during an operation time corresponding to operation time information contained in the control data packet.