Electroluminescent Display Bezel Reduction via Integrated Scan Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electroluminescent display devices face challenges in reducing the width of the bezel, which increases due to the placement of gate driving circuits on both sides of the display region, affecting the device's compactness and display quality.
Innovation Solution
The electroluminescent display device incorporates a scan driving circuit within the display region, with clock signal lines and voltage lines strategically positioned to reduce the need for additional non-display regions, allowing for a narrower bezel and improved display quality by dispersing scan circuit regions within the active display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gate driving circuits are formed at both sides of the display region, then the display device can be driven properly, but the bezel width increases
Solution Approach 1:
The patent moves the scan driving circuit from the traditional lateral placement (both sides of display region) to a vertical integration within the display region itself. By positioning the scan driving circuit in the scan circuit region between pixel arrangement regions and extending voltage lines vertically through the display region, the circuit is integrated in the vertical dimension rather than occupying horizontal space, thereby reducing bezel width while maintaining driving functionality.
Solution Approach 2:
The patent divides the display region into multiple functional zones: pixel arrangement regions for display and scan circuit regions for driving circuits. The scan driving circuit is segmented and placed within the display region rather than outside it, and voltage lines are segmented to extend through specific regions. This segmentation allows the driving circuit to be distributed within the display area, reducing the need for additional bezel space.
2Ease of manufacture
If scan driving circuit is placed in non-display region, then the circuit can be formed separately, but the bezel width increases and display uniformity is affected
Solution Approach 1:
The patent merges the scan driving circuit with the display region by placing it within the display region itself rather than separating it in the non-display region. The scan driving circuit is integrated into the scan circuit region between pixel arrangement regions, and voltage lines are extended through the display region to supply power. This merging eliminates the need for separate circuit formation in the bezel area, reducing bezel width while maintaining ease of manufacture through integrated fabrication processes.
3Reliability
If voltage lines are extended through display region, then power can be supplied to cathode, but the line arrangement becomes more complex
Solution Approach 1:
The patent applies local quality by extending voltage lines through specific regions (scan circuit region and pixel arrangement region) rather than uniformly across the entire display. The first voltage line extends from the scan circuit region through the display region to the cathode, while the second voltage line is positioned in the scan circuit region. This localized extension of voltage lines provides necessary power supply functionality while minimizing the overall complexity by concentrating lines in specific areas rather than distributing them uniformly.
Data Source
AI summary
An electroluminescent display device includes a display panel including a display region, which includes a plurality of pixel arrangement regions and a plurality of scan circuit regions between the plurality of pixel arrangement regions, and a non-display region around the display region; a scan driving circuit formed in the plurality of scan circuit regions, and a clock signal line transferring a clock signal, and a first voltage line and a second voltage line located at both sides of the clock signal line, the clock signal line and the first and second voltage lines being located in the scan circuit region, wherein the first voltage line transfers a low potential driving voltage which is supplied to a cathode corresponding to the display region.