Patent Application
20160048253
This application claims the benefits of the Taiwan Patent Application Serial Number 103128085, filed on Aug. 15, 2014, the subject matter of which is incorporated herein by reference.
1. Field of the Invention
The disclosure relates to a touch display device, and especially to a touch display device capable of reducing the visibility of electrode patterns.
2. Description of Related Art
In recent years, with the development trend of user-friendly operation and simplification, touch display devices are more and more widely used in life. Since users can input signal to the touch panel by a hand directly or other objects, users' dependence on other input devices (such as a keyboard, a mouse, and a remote control, etc.) is reduced or even eliminated, and users' convenience is increased dramatically.
A typical touch panel unit includes a sensing electrode array having a plurality of sensing electrodes arranged in series along the vertical and horizontal directions, metal bridges for electrically connecting the sensing electrodes, and an insulating layer disposed therebetween. A cover glass is necessary to be disposed on the touch panel for protection, and an adhesive can be used to replace the traditional border sticker for a phone screen to achieve full lamination of the cover glass and the touch panel. The use of adhesive can avoid the air gap caused by the border sticker, and effectively improve the display quality of the touch panel. Nowadays, common adhesives are, for example, an optical clear adhesive (OCA), an optical clear resin (OCR) and the like.
Although the adhesive can improve the display quality of the touch panel, it, however, makes the electrode array pattern of the touch panel more observable by the human eye, causing the visibility problem. Therefore, what is needed in the art is to develop a touch display device, which can alleviate the visibility problem of the electrode pattern to enhance user's visual quality.
The disclosure is to provide a touch display device capable of effectively solving the visibility problem of the electrode pattern.
To achieve the above object, the disclosure provides a touch display device, comprising: a display; a touch panel disposed on the display; and a protective layer disposed on the touch panel; wherein at least one of the high refractive layer is disposed between the protective layer and the touch panel, and the high refractive layer has a refractive index greater than 1.5 and less than 2.0.
Accordingly, in the touch display device of the disclosure, the high refractive layer is disposed between the protective layer and the touch panel to reduce the difference between the refractive indexes of the touch panel and the high refractive layer and substantially reduce the refraction and reflection phenomenon while light penetrates the panel, thereby effectively alleviating the visibility problem of the electrode pattern.
Hereafter, examples will be provided to illustrate the examples of the disclosure. Other advantages and effects of the invention will become more apparent from the disclosure of the disclosure. Other various aspects also may be practiced or applied in the invention, and various modifications and variations can be made without departing from the spirit of the invention based on various concepts and applications.
In the present embodiment, the adhesive layer 41 is an optical clear adhesive (OCA), but the disclosure is not limited thereto. When the refractive index of the adhesive layer 41 is greater than 1.5 and less than 2.0, the adhesive layer 41 may be any conventional adhesive layer, such as an optical clear resin (OCR) layer.
In the present embodiment, the adhesive layer 41 is disposed on a surface of the protective layer 5. However, the adhesive layer 41 may also be disposed on a surface of the touch panel 2, as shown in
In the present embodiment, the display 1, the touch panel 2, the polarizer 31, and the protective layer 5 may be conventional elements known in the art. For example, the display 1 may be a liquid crystal display device (LCD) or an organic light-emitting diode device (OLED), the touch panel 2 may be a capacitive or resistive touch panel, the polarizer may be a linear or transmissive polarizer, and the protective layer 5 may be a glass layer.
In the present embodiment, the polarizer 31 is disposed on the touch panel 2, and the coating layer 6 is formed on a surface of the polarizer 31. However, the coating layer 6 may also be formed on another surface of the polarizer 31. As shown in
In the present embodiment, the coating layer 6 may be formed by coating any material having a refractive index greater than 1.5 and less than 2.0. The adhesive layer 43 is not particularly limited, and may be any adhesive layer known in the art. Furthermore, the display 1, the touch panel 2, the polarizer 31, and the protective layer 5 are the same as those illustrated in Embodiment 1, and will not be repeated herein.
In the present embodiment, the polarizer 32 is provided on a surface of the protective layer 5. However, the polarizer 32 may also be disposed on a surface of the touch panel 2, as shown in
In the present embodiment, the adhesive layer 43 is not particularly limited, and may be any adhesive layer known in the art. Furthermore, the display 1, the touch panel 2, the polarizer 31, and the protective layer 5 are the same as those illustrated in Embodiment 1, and will not be repeated herein.
Accordingly, when the light penetrates the panel, the above described configurations can significantly reduce the phenomenon of refraction and reflection to improve the visibility of the electrode pattern, and give consumers a better user experience.
The above examples are only for the purpose of better describing the disclosure and are of exemplary nature, the scope of right asserted by the disclosure is based on the scope of claims in this application, and are not intended to be limited by the above examples.
| Number | Date | Country | Kind |
|---|---|---|---|
| 103128085 | Aug 2014 | TW | national |
