Grating Panel 3D Display Ghosting Elimination
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Solution Overview
Problem
Existing 3D display devices require users to wear glasses, which is inconvenient and leads to ghosting issues due to insufficient light shielding in grating panels, affecting the 3D display experience.
Innovation Solution
A display device comprising at least two grating panels with dielectric layers and driving structures that receive signals to form electric fields, enabling light transmission or shielding, allowing for the creation of light-transmitting and light-shielding units without the need for glasses, and featuring a specific arrangement of grating units and electrodes to minimize crosstalk and enhance the 3D effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single grating panel is used, then the device complexity is low, but ghosting occurs due to insufficient light shielding
Solution Approach 1:
The patent divides the grating panel into multiple independent grating panels (first grating panel and second grating panel) stacked together. Each grating panel contains multiple grating units that can be independently controlled to form light-transmitting or light-shielding units. This segmentation allows for more effective light shielding to eliminate ghosting while maintaining manageable device complexity through modular design.
2Object-generated harmful factors
If multiple grating panels are stacked, then light shielding performance improves, but device complexity increases
Solution Approach 1:
The patent combines multiple grating panels with different arrangement periods into a single integrated display system. The first grating panel with arrangement period P1 and the second grating panel with arrangement period P2 (where P1≠P2) are stacked and controlled together to achieve superior light shielding performance. This merging approach improves light shielding effectiveness while the coordinated control mechanism manages the overall system complexity.
3Object-generated harmful factors
If grating units are arranged with small arrangement period, then light shielding effectiveness increases, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies different arrangement periods to different grating panels locally. The first grating panel uses arrangement period P1 while the second grating panel uses arrangement period P2, where P1≠P2. This local differentiation allows each panel to be optimized for its specific function while collectively achieving high light shielding effectiveness. The varying arrangement periods also help reduce the overall manufacturing precision requirements by distributing the complexity across multiple panels with different specifications.
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
The solution effectively eliminates ghosting and improves the 3D display experience by ensuring proper light shielding and transmission, allowing for a comfortable auto-stereoscopy effect without the need for glasses, with a crosstalk value less than 0.2% and optimized brightness distribution.
Implementation Method 1
the driving structure is configured to receive a driving signal and form an electric field under action of the driving signal; the electric field is used for driving a corresponding position of the dielectric layer to transmit light or shield light
Data Source
AI summary
A display device and a driving method thereof are provided. The display device includes: a display panel; and at least two grating panels; the grating panel includes a dielectric layer and driving structures disposed on at least one side of the dielectric layer; the grating panel includes grating units, the grating unit includes at least two driving structures; the driving structure is configured to receive a driving signal and form an electric field under the action of the driving signal; the electric field is used for driving a corresponding position of the dielectric layer to transmit light or shield light so that the grating unit forms a light-transmitting unit and a light-shielding unit; the grating panels include a first grating panel and a second grating panel stacked on a same side or two opposite sides of the display panel; the grating units are arranged along a first direction.