Touch display device

Abstract

The invention relates to a touch display device, which comprises a display module, an optical cement layer, a shielding structure, a protective layer and a plurality of transparent gel layers, wherein the optical cement layer is arranged above the display module; the shielding structure is arranged on the surface, far away from the display module, of the optical cement layer; the protective layer is arranged on the surface, far away from the optical cement layer, of the shielding structure; the protective layer, the optical cement layer and the shielding structure form an accommodating space; the plurality of transparent gel layers are arranged in the accommodating space; and the refractive index of at least one layer in the plurality of transparent gel layers is different from those of the other layers in the transparent gel layers. The viewing angle of the touch display equipment can be adjusted by changing the refractive indexes of the transparent gel layers; limitations on the optical cement layer and the protective layer are reduced; and the phenomenon that a partial reflection is caused on a juncture of interfaces due to an overlarge difference between the refractive indexes of the materials with different refractive indexes can be avoided.

Description

Technical field [0001] The present invention relates to a touch display device, in particular to a touch display device with multiple transparent ink layers. Background technique [0002] Generally speaking, the common method of assembling touch display devices is to attach the display module or the combination of the touch module and the display module to the protective glass layer printed with shading ink on the edge through the optical adhesive layer. In this way, from the optical adhesive layer There is no other medium in the visible area between the protective glass layer, so that the optical viewing angle of the touch display device can only rely on adjusting the refractive index of the optical adhesive layer and the protective glass layer material, which is hindered by the material characteristics and materials. The refractive index cannot be arbitrarily combined, and there is no room for adjustment, and the expected optical properties cannot be achieved. Or, it is necessa...

AI Technical Summary

Problems solved by technology

[0002] Generally speaking, a common way to assemble touch display devices is to attach the protective glass layer printed with light-shielding ink on the edge to the display module or the combination of the touch module and the display module through the optical adhesive layer. There is no other medium between the visible area and the protective glass layer, so that the optical viewing angle of the touch display device can only rely on adjusting the refractive index of the optical adhesive layer and the protective glass layer material, which is hindered by material properties and material The refractive index cannot be combined arbitrarily, there is no room for adjustment, and the expected optical properties cannot be achieved, or even a coating layer with special properties must be used on the protective glass layer for better optical performance

On the other hand, since the thickness of the optical adhesive layer must be adjusted according to the thickness of the shading ink in the ink area on the protective glass layer, in addition to increasing the difficulty of the production process, if the thickness of the optical adhesive layer and the shading ink cannot match At this time, it is easy to generate bubbles in the visible area (visual area, VA) between the optical adhesive layer and the protective glass layer, which affects the visual effect of the touch display device.

[0003] It can be seen that the above-mentioned existing structure obviously still has inconvenience and defects, and needs to be further improved.

In order to solve the above problems, related fields have tried their best to find a solution, but no applicable method has been developed for a long time.

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