CROSS REFERENCE

The present application is based on International Application No. PCT/CN2018/107009, filed on Sep. 21, 2018, which is based upon and claims priority to Chinese Patent Application No. 201810124353.0, filed Feb. 7, 2018, the entire contents of which are hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to a touch screen, a manufacturing method thereof, and a touch display device.

BACKGROUND

One Glass Solution (OGS) touch screen is a capacitive touch screen which directly forms a touch electrode on a glass substrate, the glass substrate can simultaneously serve as both a protective glass and a touch sensor, thereby saving the number of glass substrates, and reducing the production cost of a touch display device.

When a screen of the touch display device is off, however, because the reflectivity of the OGS touch screen is low, the touch display device cannot realize mirror display.

SUMMARY

The present disclosure discloses a touch screen comprising: a base substrate; a first reflected layer disposed on a first surface of the base substrate; a second reflected layer disposed on a second surface of the base substrate; and a touch functional layer disposed on a surface of the second reflected layer away from the base substrate;

wherein the first surface and the second surface are opposite to each other.

In an exemplary embodiment, a material of the first reflected layer is niobium oxide.

In an exemplary embodiment, the first reflected layer has a thickness of 400 Å-800 Å.

In an exemplary embodiment, the second reflected layer includes a niobium oxide layer, which has a thickness of 400 Å-800 Å.

In an exemplary embodiment, the second reflected layer further includes a silicon oxide layer on a side of the niobium oxide layer away from the base substrate, the silicon oxide layer having a thickness of 0-1500 Å.

In an exemplary embodiment, the touch screen further includes an invisible layer located on a side of the touch functional layer away from the second reflected layer.

In an exemplary embodiment, the touch screen further includes an anti-fingerprint layer located on a side of the first reflected layer away from the base substrate.

The present disclosure also discloses a method for manufacturing a touch screen including:

forming a first reflected layer on a first surface of a base substrate;

forming a second reflected layer on a second surface of the base substrate, the first surface and the second surface being opposite to each other;

forming a touch functional layer on a surface of the second reflected layer away from the base substrate.

In an exemplary embodiment, the first reflected layer and the second reflected layer are both formed by a sputtering process.

The present disclosure also discloses a touch display device including a display screen and the touch screen described above.

In an exemplary embodiment, the touch display device further includes an optical clear adhesive disposed between the display screen and the touch screen, and configured to laminate the display screen and the touch screen.

In an exemplary embodiment, the display screen is a Liquid Crystal Display (LCD) display screen or an Organic Light Emitting Diode (OLED) display screen.

