Electrophoretic Display Panel With Inclined Electrodes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Non-capsule type electrophoretic display structures face longer driving and refreshing times due to electrophoretic particles moving a longer distance under vertical electric fields.
Innovation Solution
A display panel design with pixel electrodes forming an electric field at an angle greater than 0 degrees to the substrate plane, using charged particles of different colors and a reflective layer, and blocking electrodes to control particle movement parallel to the substrate, reducing migration distance and enhancing gray scale adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a vertical electric field is used to drive electrophoretic particles, then the display structure is simple, but the particle migration distance is long resulting in longer refreshing time
Solution Approach 1:
The patent introduces inclined electrode structures that generate electric fields at angles (30-60 degrees) relative to the substrate plane, adding a horizontal component to the electric field direction. This dimensional change allows particles to move along a shorter path while still achieving the required display effect, thereby reducing refreshing time.
Solution Approach 2:
The patent changes the orientation parameter of the electric field from vertical (perpendicular to substrate) to inclined (30-60 degrees relative to substrate plane). This parameter modification optimizes the balance between migration distance and display effectiveness, reducing the time required for particle repositioning.
2Productivity
If electrophoretic particles move longer distance under vertical electric field, then the electrode arrangement is simple, but the driving time and refreshing time increase
Solution Approach 1:
By inclining the electrodes at 30-60 degrees relative to the substrate plane, the patent creates a more efficient particle migration path. This structural modification increases driving speed without significantly complicating the overall device architecture, as the inclined electrodes can be integrated into existing display panel structures.
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
Shortens refreshing time and improves gray scale capability by minimizing particle migration distance and optimizing electric field direction, while maintaining display effectiveness.
Implementation Method 1
an electrophoretic liquid layer between the pixel electrode and the common electrode, including a plurality of charged particles therein
Implementation Method 2
configured to form an electric field with an angle greater than 0 with respect to a direction perpendicular to the first base substrate
Data Source
AI summary
A display panel, a method for driving a display panel, and a display apparatus are provided. The display panel includes a first base substrate and a plurality of pixels on one side of the first base substrate. Each pixel includes: a plurality of pixel sub-electrodes independent from each other and configured to form an electric field with an included angle greater than 0 with respect to a direction perpendicular to the first base substrate under control of incompletely same driving signals; a common electrode on a side of the pixel electrode away from the first base substrate; and an electrophoretic liquid layer between the pixel electrode and the common electrode, including a plurality of charged particles therein.