a. Field of the Invention
The invention relates to a touch-sensitive device and a touch-sensitive display device.
b. Description of the Related Art
The invention provides a thin touch-sensitive device and touch-sensitive display device having high production yields and supporting the input of a conductor and an insulator.
In order to achieve one or a portion of or all of the objects or other objects, one embodiment of the invention provides a touch-sensitive device including a first substrate, a first touch-sensing electrode structure, a second substrate and a second touch-sensing electrode structure. The first touch-sensing electrode structure is disposed on the first substrate, where at least one touch position of a conductor is detected by sensing the capacitance variation of the first touch-sensing electrode structure. The second substrate is disposed adjacent to the first substrate and spaced from the first substrate with an interval. The second touch-sensing electrode structure is disposed on one side of the second substrate back to the first touch-sensing electrode structure. At least one touch position of an insulator is detected by sensing a variation of the interval between the first touch-sensing electrode structure and the second touch-sensing electrode structure.
In one embodiment, the first substrate has a first side and a second side opposite the first side, the first touch-sensing electrode structure includes a plurality of first sensing series and a second sensing series crossing the first sensing series, and the second touch-sensing electrode structure includes a transparent electrode layer. In one embodiment, the first sensing series are disposed on the first side of the first substrate and the second sensing series are disposed on the second side of the first substrate.
In one embodiment, the touch-sensitive device further includes a third substrate disposed adjacent to the first side of the first substrate. The first sensing series are formed on one side of the third substrate facing the first substrate, and the second sensing series are formed on the second side of the first substrate.
In one embodiment, the first touch-sensing electrode structure comprises a plurality of regularly arranged button electrodes.
In one embodiment, the touch-sensitive device further includes a decorative film disposed adjacent to the first side of the first substrate.
In one embodiment, a decorative layer is formed on a periphery of the first substrate, and the decorative layer includes at least one of diamond like carbon, ceramic, colored ink, resin and photo resist.
In one embodiment, the first touch-sensing electrode structure comprises a plurality of regularly arranged button electrodes.
In one embodiment, the second touch-sensing electrode structure is floating, connected to a voltage source, directly grounded or connected to a capacitor before being grounded.
In one embodiment, the interval is filled with at least one of a gas, a solid-state filler and a liquid-state filler.
According to the above embodiments, since the interval between the substrate and the substrate is substantially equal to the interval between the first touch-sensing electrode structure and the second touch-sensing electrode structure minus the thickness of the substrate, the overall thickness of the touch-sensitive device is allowed to be reduced (minus the thickness of the substrate) to realize a thin touch-sensitive device.
According to another embodiment of the invention, a touch-sensitive display device includes a first substrate, an OLED formed on the first substrate, a cover plate, a first touch-sensing electrode structure, a second substrate and a second touch-sensing electrode structure. The cover plate is connected to the first substrate to seal the OLED between the first substrate and the cover plate, and the second substrate is disposed on one side of the cover plate back to the OLED and spaced from the cover plate with an interval. The first touch-sensing electrode structure is disposed on the second substrate, and at least one touch position of a conductor is detected by sensing the capacitance variation of the first touch-sensing electrode structure. The second touch-sensing electrode structure is formed on one side of the cover plate back to the second substrate, and at least one touch position of an insulator is detected by sensing the variation of the interval between the first touch-sensing electrode structure and the second touch-sensing electrode structure.
In one embodiment, the first touch-sensing electrode structure includes a plurality of first sensing series and a plurality of second sensing series crossing the first sensing series, and the first sensing series and the second sensing series are formed on a single side of the second substrate.
In one embodiment, the touch-sensitive display device further includes a third substrate disposed adjacent to one side of the second substrate back to the cover plate, and the first touch-sensing electrode structure are formed on the second substrate and the third substrate.
In one embodiment, the interval between the second substrate and the cover plate is filled with at least one of a gas, a solid-state filler and a liquid-state filler, and photo spacers or dot spacers are dispersed in the interval.
In one embodiment, a decorative layer is formed on a periphery of the second substrate, and the decorative layer comprises at least one of diamond like carbon, ceramic, colored ink, resin and photo resist.
According to another embodiment of the invention, a touch-sensitive display device includes a cover lens structure having a first touch-sensing electrode structure, a liquid crystal display, a first linear polarizer, a second linear polarizer and a second touch-sensing electrode structure. At least one touch position of a conductor is detected by sensing the capacitance variation of the first touch-sensing electrode structure. The liquid crystal display is disposed on one side of the cover lens structure, and the first linear polarizer disposed between the cover lens structure and the liquid crystal display. The second linear polarizer is disposed on one side of the liquid crystal display back to the cover lens structure, and the second touch-sensing electrode structure is disposed on one side of the first linear polarizer back to the first touch-sensing electrode structure. The second touch-sensing electrode structure is spaced from the first touch-sensing electrode structure with an interval, and at least one touch position of an insulator is detected by sensing the variation of the interval between the first touch-sensing electrode structure and the second touch-sensing electrode structure.
In one embodiment, the cover lens structure has a cover glass and a first touch-sensing electrode structure formed on the cover glass, and the second touch-sensing electrode structure is formed on one side of the first linear polarizer back to the first touch-sensing electrode structure.
In one embodiment, the cover lens structure includes a first substrate, a cover glass covering the first substrate and a first touch-sensing electrode structure, where the first touch-sensing electrode structure is formed on one side of the first substrate back to the cover glass.
In one embodiment, the touch-sensitive display device further includes a circular polarizer disposed on one side of the first touch-sensing electrode structure.
In one embodiment, the touch-sensitive display device further includes a decorative layer formed on a periphery of the cover lens structure, and the decorative layer includes at least one of diamond like carbon, ceramic, colored ink, resin and photo resist.
According to the above embodiments, a piece of glass substrate and an optical adhesive to adhere the glass substrate are allowed to be omitted from each of the touch-sensitive display devices, as compared with conventional designs. Accordingly, the loss of reflection light and the overall thickness of a touch-sensitive display device are reduced. Besides, the complexity is reduced and the production yields are improved in the integration process of a force sensor and an OLED device. Further, since a bottom substrate of a force sensor and a sealing cap of an OLED device in a conventional design are merged together to form the cover plate, an air gap no longer exists therebetween to further improve the light-reflection efficiency.
Other objectives, features and advantages of the invention will be further understood from the further technological features disclosed by the embodiments of the invention wherein there are shown and described preferred embodiments of this invention, simply by way of illustration of modes best suited to carry out the invention.
In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which are shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as “top,” “bottom,” “front,” “back,” etc., is used with reference to the orientation of the Figure(s) being described. The components of the invention can be positioned in a number of different orientations. As such, the directional terminology is used for purposes of illustration and is in no way limiting. On the other hand, the drawings are only schematic and the sizes of components may be exaggerated for clarity. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the invention. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. Similarly, the terms “facing,” “faces” and variations thereof herein are used broadly and encompass direct and indirect facing, and “adjacent to” and variations thereof herein are used broadly and encompass directly and indirectly “adjacent to”. Therefore, the description of “A” component facing “B” component herein may contain the situations that “A” component directly faces “B” component or one or more additional components are between “A” component and “B” component. Also, the description of “A” component “adjacent to” “B” component herein may contain the situations that “A” component is directly “adjacent to” “B” component or one or more additional components are between “A” component and “B” component. Accordingly, the drawings and descriptions will be regarded as illustrative in nature and not as restrictive.
In all the above embodiments, each of the substrates 12, 14 and 18 may be a glass substrate or a plastic substrate. For example, in case the substrate 12 is a plastic substrate, the plastic substrate 12 is allowed to deform to a greater extent to provide higher coupling capacitance. Further, an air gap (shown in
In all the above embodiments, the second touch-sensing electrode structure 20b may be connected to a capacitor C before being grounded, as shown in
Herein, an arrangement of a touch-sensitive device in combination with a display device is described below in different embodiments. Referring to
According to the above embodiments of the touch-sensitive display devices 50a to 50c, a piece of glass substrate and an optical adhesive adhering the glass substrate are omitted, as compared with conventional designs. Accordingly, the loss of reflection light and the overall thickness of a touch-sensitive display device are reduced. Besides, the complexity is reduced and the production yields are improved in the integration process of a force sensor and an OLED device. Further, since a bottom substrate of a force sensor and a sealing cap of an OLED device in a conventional design are merged together to form the cover plate 56 in an embodiment of the invention, an air gap no longer exists therebetween to further improve the light-reflection efficiency.
Note the materials of the aforesaid substrates and transparent electrodes are not limited. For example, each substrate may be a plastic substrate or a glass substrate, and the transparent electrode may include, but not limited to, an inorganic conductive material, a metallic conductive material, an oxide conductive material, a carbon nanotube conductive material, a nanotube fiber conductive material, a nanotube particle conductive material, a conductive polymer material, a metal polymer composite conductive material, a conductive polymer doped with a carbon compound, and a conductive polymer doped with an inorganic compound.
The foregoing description of the preferred embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or to exemplary embodiments disclosed. Accordingly, the foregoing description should be regarded as illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. The embodiments are chosen and described in order to best explain the principles of the invention and its best mode practical application, thereby to enable persons skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Therefore, the term “the invention”, “the present invention” or the like does not necessarily limit the claim scope to a specific embodiment, and the reference to particularly preferred exemplary embodiments of the invention does not imply a limitation on the invention, and no such limitation is to be inferred. The invention is limited only by the spirit and scope of the appended claims. The abstract of the disclosure is provided to comply with the rules requiring an abstract, which will allow a searcher to quickly ascertain the subject matter of the technical disclosure of any patent issued from this disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
Number | Date | Country | Kind |
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100101888 | Jan 2011 | TW | national |