Grating Base Plate Integrating Touch and 3D Light-Splitting Functions
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Solution Overview
Problem
Current touch screen technologies do not integrate both touch function and 3D light-splitting function effectively, limiting their ability to provide a seamless user interaction and immersive 3D display experience without the need for 3D glasses.
Innovation Solution
A grating substrate is fabricated with comb-shaped, opaque touch electrodes and conductive bridges that serve both as touch electrodes and 3D slit grating electrodes, enabling simultaneous touch functionality and 3D light-splitting by forming an array of first and second touch electrodes connected via conductive bridges and an insulating spacing layer, allowing for the integration of touch and 3D display capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate touch screen and 3D grating components are used, then each component can be optimized independently, but the device complexity increases and alignment becomes difficult
Solution Approach 1:
The patent merges the touch electrode and 3D grating electrode into a single integrated electrode structure. The comb-shaped electrode serves dual purposes: as a touch detection electrode and as a 3D light-splitting grating, eliminating the need for separate components and simplifying alignment requirements.
Solution Approach 2:
The electrode structure is designed to perform multiple functions simultaneously. The same conductive pattern on the substrate serves both as the touch sensing element and as the 3D grating element, making the system more versatile while reducing component count.
2Adaptability or versatility
If opaque electrodes are used for 3D grating, then light-splitting function is achieved, but touch electrode transparency is reduced
Solution Approach 1:
The electrode design uses local quality variation through the comb-shaped pattern. The opaque conductive material is arranged in a periodic comb structure that provides sufficient light-blocking capability for 3D grating function in specific regions, while maintaining overall transparency by leaving gaps between the comb teeth. This allows the electrode to have different optical properties in different spatial locations.
Data Source
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AI summary
A fabrication method of a grating substrate, a grating substrate and a display device are provided. The fabrication method of the grating substrate, comprises: forming an array of comb-shaped, opaque touch electrodes and a plurality of first conductive bridges (3) on a base substrate, wherein the array of touch electrodes includes a plurality of first touch electrodes (1) and a plurality of second touch electrodes (2) which are disconnected from each other, and the plurality of first touch electrodes (1) in the array are connected together via the first conductive bridges (3); forming an insulating spacing layer (4) on the base substrate on which the array of touch electrodes and the plurality of first touch electrodes (1) are formed, the insulating spacing layer (4) covering the first conductive bridges (3); forming second conductive bridges (5) on the insulating spacing layer (4), the plurality of second touch electrodes (2) in the array being connected together via the second conductive bridges (5). In embodiments of the present invention, the touch electrode can be used as not only a touch electrode of a touch screen but also an electrode of a 3D grating, to achieve both a touch function and a 3D light-splitting function at the same time.