Display Data Signal Adjustment for Notch Regions
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Solution Overview
Problem
Electronic devices with non-uniformly shaped displays, such as those with rounded corners or inactive notches, face challenges in displaying images smoothly due to abrupt transitions in data signals, leading to undesirable visual artifacts.
Innovation Solution
Implementing data signal compensation operations to gradually transition voltages on data lines, with null data signals decreasing from the border of the active area to the inactive notch region, and setting all data signals for non-existent pixels to a uniform gray level to minimize nonuniformities and artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If data signals corresponding to nonexistent pixels are provided to maintain rectangular image display, then the image can be displayed uniformly, but visual artifacts occur at the border between active and inactive areas
Solution Approach 1:
The patent applies local quality by differentiating the treatment of data signals based on their spatial location. Null data signals corresponding to pixels in the inactive notch region are identified and adjusted differently from signals corresponding to active pixels. This localized adjustment smooths the transition at the border between active and inactive areas while preserving image uniformity in the displayed region.
Solution Approach 2:
The patent changes the voltage parameter of null data signals gradually rather than abruptly. By transitioning the voltage levels of null data signals incrementally from the border inward, the patent eliminates abrupt transitions that cause visual artifacts while maintaining the necessary signal differentiation between active and inactive regions.
2Stability of the object's composition
If null data signals are adjusted to smooth the edge between active and inactive areas, then visual uniformity improves, but abrupt voltage transitions occur on data lines causing display artifacts
Solution Approach 1:
The patent applies preliminary action by pre-adjusting the voltage levels of null data signals before they are transmitted on the data lines. The display driver circuitry proactively transitions voltage levels in a controlled manner, preparing the signals to avoid abrupt changes that would manifest as display artifacts. This preventive approach ensures smooth transitions without causing harmful voltage spikes.
3Stability of the object's composition
If all data signals for non-existent pixels are set to a uniform gray level, then nonuniformities in the displayed image are minimized, but the transition from active to inactive area becomes less gradual
Solution Approach 1:
The patent segments the display area into active and inactive regions and further segments the transition zone into multiple zones with different voltage levels. Rather than applying a single uniform gray level, the patent divides the null data signal region into zones with progressively changing voltage levels, creating a gradual transition that maintains image uniformity while preserving a smooth visual gradient.
Data Source
AI summary
A display may have an active area that includes display pixels. The display may include an inactive notch region that extends into the active area. Data lines may provide image data from display driver circuitry to the display pixels. The image data may include data signals that correspond to portions of the display that do not include pixels, such as the inactive notch region. The null data signals may cause nonuniformities in the displayed image. The null data signals may be adjusted to minimize the nonuniformities. Null data signals corresponding to the inactive notch region may be adjusted to have gray levels that gradually decrease with distance from the border between the inactive notch and the active area. All of the data signals corresponding to the inactive notch may be set to a uniform gray level.