Irregular Display Notch Sensing Lines Scan Load Correction
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Solution Overview
Problem
Display devices with irregularly shaped structures face issues due to scan load differences, which deteriorate display quality by causing sampling voltage differences.
Innovation Solution
A display device with sensing lines in the notch area to detect and quantify scan load differences, allowing the data driver to correct the data signal offset, thereby improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display area has an irregularly shaped side, then the design versatility is improved, but the scan load difference causes sampling voltage difference which deteriorates display quality
Solution Approach 1:
The patent applies preliminary action by detecting the scan load difference before it causes display quality deterioration. The sensing lines are configured to detect the load difference in advance, and the data driver pre-compensates the data signal based on the detected difference, preventing the sampling voltage difference from degrading display quality.
Solution Approach 2:
The patent implements feedback by using sensing lines to detect the actual scan load difference caused by the irregularly shaped display area. The detected information is fed back to the data driver, which adjusts the data signal accordingly. This closed-loop feedback mechanism ensures that display quality is maintained despite the irregular shape.
2Measurement precision
If sensing lines are added to detect scan load difference, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The sensing lines serve multiple functions: they detect the scan load difference and also function as part of the overall display structure. By making the sensing lines multi-functional, the patent reduces the need for separate dedicated detection components, thereby limiting the increase in device complexity while maintaining measurement precision.
Solution Approach 2:
The sensing lines act as intermediaries between the gate lines and the data driver. Instead of requiring direct complex measurement mechanisms, the sensing lines mediate the detection process by transmitting load difference information to the data driver, simplifying the overall system architecture while achieving precise measurement.
Data Source
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Figure 3A~3B
AI summary
A display device (100) according to the present disclosure includes a substrate (111) including a display area (AA) which has an irregularly shaped side and a non-display area (NA) which includes a notch area (NTA) defined by a shape of the irregularly shaped side of the display area (AA) and is disposed to enclose the display area (AA); a plurality of gate lines (GL) which are divided to be disposed in a left display area and a right display area of the display area (AA) due to the irregularly shaped side of the display area (AA); a plurality of data lines (DL) disposed in the display area (AA); and a plurality of sensing lines which is disposed in the notch area and is connected to the plurality of gate lines (GL) to transmit a scan output signal (SLS) output from the plurality of gate lines (GL). As described above, the load amount of the scan output signal (SLS) of the display area (AA) in which the irregularly shaped side is formed is detected by the plurality of sensing lines (SL) and the offset of the data signal (DS) is corrected based on the load amount to improve the image quality of the display device including an irregularly shaped side.