This application claims priority of Taiwanese application No. 099142126, filed on Dec. 3, 2010.
1. Field of the Invention
This invention relates to a touch input device, more particularly to a reattachable touch input device for use with an electronic device.
2. Description of the Related Art
Touch input technology are increasingly used in consumer electronic devices whereas the majority of electronic devices employ a mouse or a keyboard as an input interface, for example, less than 30% of mobile phones and less than 10% of personal computers and notebook computers employ touch input devices as an input interface. However, manufacturers need to redesign various electronic devices to provide touch input functionality for the electronic devices, which results in higher manufacturing costs. Therefore, it is desirable to provide a touch input device that can be used with various electronic devices without having to redesign the electronic devices.
Therefore, the object of the present invention is to provide a reattachable touch input device that can be used with various electronic devices.
According to this invention, the reattachable touch input device comprises a touch sensing layer and a reattachable attachment member. The touch sensing layer is operable to generate a touch position signal in response to at least one touch action detected thereby. The reattachable attachment member is disposed under the touch sensing layer and is configured for releasable attachment of the reattachable touch input device to a surface.
Other features and advantages of the pre sent invention will become apparent in the following detailed description of the preferred embodiment of the invention, with reference to the accompanying drawings, in which:
Referring to
The touch sensing layer 11 is a flexible touch panel operable to generate a touch position signal in response to at least one touch action detected thereby and is one of a resistive sensing layer, a capacitive sensing layer, an inductive sensing layer, and a piezoelectric sensing layer. In this embodiment, the touch sensing layer 11 has a thickness ranging from 0.1 mm to 2 mm, but the invention is not limited in this respect.
The reattachable attachment member 12 is disposed under and fixed to the touch sensing layer 11 in this embodiment, and is made of one of natural rubber, synthetic rubber (silicone, CR, EPDM, SBRR, PU), resin (SBS, SEBS, EVA), adhesive, and electrostatic attraction material for releasable attachment of the reattachable touch input device 1 to a surface. In this embodiment, the reattachable attachment member 12 has a thickness ranging from 3 um to 200 um but the invention is not limited in this respect. It should be noted that the reattachable attachment member 12 may be separably attached to the touch sensing layer 11, and may have a thickness ranging from 10 um to 1 mm in other embodiments of this invention.
The protective layer 14 is a flexible film disposed above the touch sensing layer 11 and is made of one of a PET hard coat layer and a scratch-resistant coat layer for protecting the touch sensing layer 11.
The decorative layer 13 is a pattern formed between the protective layer 14 and the touch sensing layer 11 by a printing process and may be omitted in other embodiments of this invention. The total thickness of the protective layer 14 and the decorative layer 13 ranges from 5 um to 300 um.
Transparency of the reattachable attachment member 12, the touch sensing layer 11, and the protective layer 14 may vary according to application requirements. For example, the reattachable attachment member 12, the touch sensing layer 11, and the protective layer 14 may all be transparent, or one of the reattachable attachment member 12, the touch sensing layer 11, and the protective layer 14 may be opaque depending on the application of this invention.
For simplicity of illustration, in the following descriptions, an assembly of the touch sensing layer 11, the decorative layer 13, and the protective layer 14 are referred to as a touch sensing device 100.
As shown in
The controller 15 is coupled to the touch sensing layer 11 by the electrical connector pair 19 to receive the touch position signal therefrom, the touch position signal being generated in response to at least one touch action detected by the touch sensing layer 11. The controller 15 is configured to convert the touch position signal into a digital signal to be received by the microprocessor 16. The microprocessor 16 is coupled to the controller 15 to receive the digital signal therefrom and is configured to convert the digital signal into a positioning signal. It is noted that the electrical connector pair 19 is provided for removably and electrically connecting the controller 15 to the touch sensing layer 11 such that the processing module 10 of this invention may be used with other touch sensing devices 100 having different sizes.
The transmission module 17 is a wired transmission module coupled to the microprocessor 16 to receive and transmit the positioning signal for subsequent receipt by the electronic device (not shown). In this embodiment, the transmission module 17 is a USB transmission module. It can be appreciated that, as shown in
Referring to
According to still another modification of this embodiment as illustrated in
Additionally, the reattachable touch input device 1 may comprise a power supply (not shown) such as a solar battery or a minicell battery module for providing electric power to the touch sensing device 100 and the processing module 10 when wireless transmission is employed in any one of the touch sensing device 100 and the processing module 10.
By virtue of the reattachable attachment member 12, the touch sensing device 100 can be releasably attached to a surface, such as a desk or a display screen of a notebook computer, to serve as a touch input interface for electronic devices.
In the following, three examples of using the reattachable touch input device 1 of the invention with different electronic devices are illustrated.
Referring to
As shown in
Referring to
To sum up, the advantages of the reattachable touch input device 1 of the present invention are as follows. The reattachable touch input device 1 may be used with various electronic devices without having to redesign the electronic devices and provides touch input functionality for the electronic devices. Additionally, the electrical connector pair 19 and the wireless transmission device pair 31 are respectively provided for wired and wireless transceiving of the touch position signal from the touch sensing layer 11 to the controller 15, such that the processing module 10 of this invention may be used with different sizes of touch sensing devices 100.
While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretations and equivalent arrangements.
Number | Date | Country | Kind |
---|---|---|---|
099142126 | Dec 2010 | TW | national |