Touch display device and manufacturing method thereof

A manufacturing method of a touch display device, comprising:

• providing a display panel;
• covering an upper surface of the display panel with a full-surface adhesive layer, wherein the full-surface adhesive layer comprises a liquid optical clear adhesive;
• disposing a touch panel on the upper surface of the display panel, so that the touch panel corresponds to a middle of the display panel, and a lower surface of the touch panel is attached to an upper surface of the full-surface adhesive layer;
• attaching a first sub frame adhesive layer to an edge of an upper surface of the touch panel, wherein the first sub frame adhesive layer comprises a liquid adhesive;
• cutting a solid optically clear adhesive into an adhesive strip and attaching the adhesive strip to an upper surface of the first sub frame adhesive layer, wherein a width of the adhesive strip is less than a width of the first sub frame adhesive layer;
• disposing a cover on the upper surface of the touch panel, so that the cover corresponds to a middle portion of the touch panel, and an upper surface of the adhesive strip is attached to a lower surface of the cover;
• heating the cover, the touch panel, and the display panel which are attached with the corresponding adhesive layer under a vacuum environment, so that the adhesive strip is melted;
• and
• irradiating the cover, the touch panel, and the display panel which are attached with the corresponding adhesive layer with ultraviolet ray under the vacuum environment such that the full-surface adhesive layer is cured, and the melted adhesive strip is cured into a second sub frame adhesive layer, and a vacuum chamber is formed on middle portions of the first sub frame adhesive layer and the second sub frame adhesive layer.