Frameless Display Panel Test Switch Integration
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Solution Overview
Problem
The increasing demand for frameless display panels with narrow or no frames poses a challenge for performing lighting tests, as traditional test circuits in the lower frame region are not feasible in these designs, hindering quality assurance of display panels and display apparatus.
Innovation Solution
Incorporating test switches, test signal lines, and test control lines within the display region of the panel, allowing for lighting tests to be conducted without the need for a lower frame, thereby enabling frameless designs while maintaining testing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lower frame is provided for test switches to enable lighting tests, then testing capability is improved, but the frameless design requirement is compromised
Solution Approach 1:
The patent relocates the test switch from the traditional lower frame position to the display region itself, specifically positioning it at the intersection of data lines and scan lines. This spatial reconfiguration enables the test switch to function without requiring a lower frame structure, thus maintaining the frameless design while preserving lighting test capability.
Solution Approach 2:
The test switch is integrated into the display region's circuit architecture, serving dual purposes: it functions as part of the display driver circuitry while simultaneously enabling lighting tests. This multi-functional integration eliminates the need for separate test infrastructure in the lower frame.
2Shape
If the lower frame is completely removed for aesthetic purposes, then the aesthetic appeal is improved, but the lighting test function is lost
Solution Approach 1:
The testing function is extracted from the lower frame structure and relocated to the display region. By removing the dependency on the lower frame for test switch placement, the patent enables quality assurance capabilities to exist independently of the aesthetic frameless design.
Solution Approach 2:
The test switch is repositioned from the peripheral lower frame area to the central display region, utilizing the existing data line and scan line intersections. This dimensional relocation allows the display panel to maintain both its aesthetic frameless appearance and its quality assurance capabilities.
3Reliability
If test circuits are placed in the lower frame region, then the lighting test can be performed, but the frame width increases
Solution Approach 1:
The patent eliminates the need for horizontal frame width by positioning the test switch vertically within the display region at the intersection of data and scan lines. This reconfiguration allows the test circuit to be accommodated within the display area itself rather than requiring additional horizontal space in the lower frame.
Solution Approach 2:
The test switch is merged with the existing data line and scan line structure in the display region, combining the testing function with the display driver circuitry. This integration eliminates the need for separate lower frame infrastructure and reduces overall frame width requirements.
Data Source
AI summary
A display panel and a display apparatus are provided. The display panel has a display region. The display panel includes in the display region: a plurality of data lines, a plurality of test switches, a plurality of test signal lines and a plurality of test control lines. One of the plurality of test switches includes an input terminal electrically connected to one of the plurality of test signal lines, an output terminal electrically connected to one of the plurality of data lines, and a control terminal electrically connected to one of the plurality of test control lines.