Curved Display Electrode Overlap Compensation
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Solution Overview
Problem
Curved display devices face challenges in maintaining display quality due to misalignment between display substrates when transitioning from a flat to a curved shape, leading to potential lift-off phenomena and display quality deterioration.
Innovation Solution
The design incorporates a display panel with specific pixel electrode and common electrode configurations, including slits and overlapping areas, to manage misalignment by altering slit arrangements and overlap widths as the panel curves, ensuring proper electric field generation for patterned vertical alignment mode operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the display panel is curved, then three-dimensional effects and immersion are improved, but misalignment between substrates occurs leading to display quality deterioration
Solution Approach 1:
The patent applies different overlapping widths of pixel electrodes at different locations on the display panel. The first pixel electrode has a first overlapping width and the second pixel electrode has a second overlapping width, creating local variations in electrode configuration that compensate for curvature-induced misalignment while maintaining overall display quality
Solution Approach 2:
The patent pre-configures pixel electrodes with different overlapping widths before the display panel is curved. This preliminary design ensures that when the panel transitions to a curved state, the misalignment is already compensated for, preventing display quality deterioration without requiring real-time adjustment
2Shape
If the display panel is curved, then immersion and realism are improved, but lift-off phenomena occur causing display quality deterioration
Solution Approach 1:
The patent implements location-specific electrode overlapping configurations where pixel electrodes at different positions have different overlapping widths with the common electrode. This local variation compensates for curvature effects that cause lift-off phenomena, ensuring reliable display quality across the entire curved surface
Solution Approach 2:
The patent applies counteracting measures in advance by designing pixel electrodes with varying overlapping widths that pre-compensate for the lift-off effects caused by curvature. This preliminary anti-action prevents display quality deterioration before it occurs during operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively compensates for misalignment, maintaining display quality and preventing lift-off phenomena, allowing the curved display device to operate efficiently in a patterned vertical alignment mode.
Implementation Method 1
a first pixel electrode disposed on the first substrate, located in a center line defined as passing through a center of the first side and having a plurality of first slits, and a second pixel electrode disposed on the first substrate
Data Source
AI summary
A curved display device includes a display panel and members to curve the display panel in a first direction. The display panel includes a display substrate and a counter substrate. The display substrate comprises a pixel electrode disposed on a display area and in which first slits are formed, and the counter substrate comprises a common electrode facing the pixel electrode and in which second slits are formed. A first side area, a central area and a second side area are sequentially located in the first direction on the display area. When the display panel has a flat shape, a portion of the common electrode positioned between two adjacent second slits among the second slits overlaps the pixel electrode by an overlapping width. The length of the overlapping width in each of the first and second side areas is different from that of the overlapping width in the central area.