Dual-Panel Display With Shared Data Lines and Timed Frames
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Solution Overview
Problem
Existing display devices face challenges in efficiently driving multiple display panels with a single timing controller embedded driver, particularly in ensuring synchronized and efficient operation of different display surfaces.
Innovation Solution
A display device design that includes a first and second display panel driven by a single timing controller embedded driver, with a signal transfer line connecting data lines, allowing for separate but synchronized data signal output to each panel, and a flexible circuit board housing the driver components, enabling independent scan signal generation and voltage control for each panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single timing controller embedded driver is used to drive multiple display panels, then device complexity is reduced, but the difficulty of detecting and measuring synchronized operation increases
Solution Approach 1:
The patent divides the display system into multiple independent display panels (first display panel, second display panel, etc.), each with its own data lines and scan drivers. The single timing controller embedded driver sequentially drives each panel in separate frames, enabling synchronized operation through time-division multiplexing without requiring multiple controllers.
Solution Approach 2:
The timing controller operates in periodic frames, alternating between driving the first display panel and the second display panel. Each panel is driven in sequential frames (first frame for first panel, second frame for second panel), creating a periodic operation pattern that ensures synchronized control with a single controller.
2Manufacturing precision
If separate data lines are used for each display panel, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent employs a universal data line structure where the first data line and second data line are electrically connected through a shared signal transfer line to the data driver. This multi-functional data transmission path allows the same physical infrastructure to serve multiple display panels while maintaining signal transfer accuracy through proper timing control.
Solution Approach 2:
The timing controller generates scan start signals in advance for each display panel before the data signals are transmitted. The first scan start signal is generated before the first data signal, and the second scan start signal is generated before the second data signal, ensuring that data lines are properly prepared and synchronized before signal transfer begins.
3Ease of manufacture
If display panels are spaced apart, then ease of manufacture is improved, but loss of time for signal transfer increases
Solution Approach 1:
The patent employs a flexible circuit board that can be bent or folded to connect display panels spaced apart from each other. The flexible circuit board dynamically adapts its configuration to accommodate different panel arrangements while maintaining electrical connections. This allows panels to be positioned at optimal locations for manufacturing and assembly without incurring excessive signal transfer time.
Solution Approach 2:
The flexible circuit board acts as an intermediary component that bridges the gap between spaced-apart display panels and the timing controller embedded driver. It provides a flexible electrical connection path that maintains signal integrity while accommodating physical separation between panels, enabling ease of manufacture without significant time loss.
Data Source
AI summary
Disclosed is a display device which includes a first display panel that includes a first pixel and a first data line and is driven with a plurality of frames, a second display panel that includes a second pixel and a second data line and is driven with the plurality of frames, a driving controller and a data driver that controls the plurality of frames, and a signal transfer line that is electrically connected to the first data line, the second data line, and the data driver. The plurality of frames include a first frame and a second frame. During the first frame, the data driver outputs a first data signal to the signal transfer line. During the second frame, the data driver outputs a second data signal to the signal transfer line.