Optical substrate and display device

By designing an optical substrate that includes a light-rotating zone and a light-shielding zone, the problems of crosstalk and small viewing angle in polarized 3D technology were solved, enabling 3D display and touch functions over a wide angle range, and improving light transmission efficiency and touch sensitivity.

CN224436721UActive Publication Date: 2026-06-30BEIJING BOE DISPLAY TECH CO LTD +1
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Patent Information

Application Number
CN202520865350.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2026-06-30
Estimated Expiration
2035-04-30

AI Technical Summary

Technical Problem

Among existing 3D display technologies, polarized 3D technology is prone to crosstalk, has a small horizontal viewing angle, and is difficult to enable multiple people to watch simultaneously over a wide angle range.

Method used

An optical substrate is designed, comprising multiple optical rotation zones and a first light-shielding zone. The optical rotation zones convert incident light into left-handed or right-handed polarized light. Touch electrodes and touch traces are set on the optical substrate to realize 3D display and touch functions. At the same time, the touch traces are set in the light-shielding zone to improve light transmission efficiency.

Benefits of technology

It enables multiple people to view 3D stereoscopic effects simultaneously within a wide viewing angle range, while also featuring touch functionality and improved light transmission efficiency and touch sensitivity.

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Abstract

An optical substrate and a display device relate to the technical field of display. The optical substrate comprises a plurality of optical rotation areas and a first shading area, the first shading area is at least located between two adjacent optical rotation areas, the two adjacent optical rotation areas comprise the first optical rotation area and the second optical rotation area, the first optical rotation area is used for converting linearly polarized light with a set polarization state in incident light into levorotation polarized light, and the second optical rotation area is used for converting linearly polarized light with a set polarization state in the incident light into levorotation polarized light. The second optical rotation area is used for converting linearly polarized light with a set polarization state in the incident light into right-handed polarized light; the optical substrate comprises a substrate body, a plurality of touch electrodes and a plurality of touch wires, the touch electrodes and the touch wires are arranged on one side of the substrate body, the touch electrodes are arranged in a mutually separated mode and are not connected, the touch electrodes and the touch wires are connected in a one-to-one correspondence mode, and the touch electrodes are used for detecting the touch position of a touch body on the optical substrate; in orthographic projection on the substrate, the touch electrodes and the optical rotation area are overlapped, and the touch wires are located in the range of the first shading area.
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