Preparation method of naked-eye 3D device and naked-eye 3D device

Abstract

The embodiment of the invention discloses a preparation method of a naked-eye 3D device and the naked-eye 3D device. A specific embodiment of the method comprises the steps of forming a display module, wherein the display module comprises a plurality of pixel islands; forming a spacer layer on the display module; forming a micro-lens array on the spacer layer, wherein the thickness of the spacer layer is formed to enable the plurality of pixel islands to be located on a focal plane of the micro-lens array; the method further comprises the steps that an alignment mark is formed between the isolation cushion layer and the display module, and when the alignment mark is used for forming the micro-lens array, each micro-lens in the micro-lens array is aligned with one pixel island. According to the preparation method, the alignment precision of the micro lens and the pixel island can be effectively improved, so that the high-precision alignment of the micro lens and the pixel island is realized, the super-multi-view parallax 3D display of the prepared naked-eye 3D device is realized, and the stereoscopic effect of the parallax 3D display of the naked-eye 3D device is improved.

Description

technical field [0001] This application relates to the technical field of 3D display. More specifically, it relates to a method for preparing a naked-eye 3D device and a naked-eye 3D device. Background technique [0002] The pursuit of natural, comfortable and shocking stereoscopic display effects and the restoration of real stereoscopic scenes have been the goals of the development of naked-eye 3D technology or light field display technology for many years. To achieve this goal, it is often necessary to set multiple viewpoints to realize multi-viewpoint parallax 3D display. [0003] In the prior art, there are mainly two methods of manufacturing multi-view glasses-free 3D devices. The first is the current conventional method of manufacturing glasses-free 3D devices, that is, by laminating the glasses-free 3D film and the display module. The alignment and bonding accuracy between the 3D film and the display module is poor. For example, for small-sized naked-eye 3D devices,...

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Problems solved by technology

[0003] In the prior art, there are mainly two methods of manufacturing multi-view glasses-free 3D devices. The first is the current conventional method of manufacturing glasses-free 3D devices, that is, by laminating the glasses-free 3D film and the display module. The alignment and bonding accuracy between the 3D film and the display module is poor. For example, for small-sized naked-eye 3D devices, the bonding accuracy is generally poor, generally above 3 μm, while for large-sized naked-eye 3D devices, then The lamination accuracy is worse, resulting in misalignment between the pixel island and the microlens of the display module, reducing the 3D display effect of the device

[0004] Another preparation method is to use photolithographic thermal reflow on the display module 10, and use the alignment mark 11 in the display module 10 as a reference to perform exposure molding of the microlens array 12 to directly form the microlens array 12, such as figure 1 As shown, since there is a certain distance between the plane where the microlens array 12 is formed and the plane where the alignment mark 11 in the display module 10 is located, when the distance is large, it is difficult for the lithographic equipment to accurately focus the microlens array 12 during formation. Exposure leads to poor alignment accuracy and poor repeatability between the microlens array 12 and the pixel island 13, which affects the display effect of the 3D device

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