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Researchers Submit Patent Application, "Touch Sensing Element and Touch Panel Having the Same", for Approval

August 28, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- From Washington, D.C., VerticalNews journalists report that a patent application by the inventor Zhou, Fei (Jiangxi, CN), filed on July 5, 2013, was made available online on August 14, 2014.

The patent's assignee is Nanchang O-film Tech. Co., Ltd.

News editors obtained the following quote from the background information supplied by the inventors: "Touch panels are widely used in various electronic devices as a way of simple human-computer interaction, such as in mobile phones and tablets, etc.

"A touch panel usually includes a panel and a touch sensing element attached to a side of the panel. The touch sensing element includes an insulating layer, a sensing layer, and a driving layer. The sensing layer and the driving layer are located on two opposite surfaces of the insulating layer. The sensing layer includes a plurality of uncrossed sensing traces extended along a first direction. The driving layer includes a plurality of uncrossed driving traces extended along a second direction. The first direction is not parallel to the second direction. The sensing traces and the driving traces are separated by the insulating layer, which act as two electrode plates of a capacitor. Each sensing trace and a corresponding driving trace form a sensor node in an intersection region. When a touch object such as a finger, a stylus etc. touches the panel, the capacitance of the sensor node will change, which would realize the positioning of the touching and the execution of the touch instruction.

"However, a structure of the touch sensing element of the touch panel is complicated, the sensing layer and the driving layer are formed on two opposite surfaces of the insulating layer during the producing of the element, and such process is complicated."

As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventor's summary information for this patent application: "It is an object of the present disclosure to provide a touch sensing element and a touch panel having the touch sensing element with a relatively simple process.

"A touch sensing element includes an insulating substrate and a conductive layer located on the insulating substrate, the conductive layer is located on a surface of the insulating substrate, the conductive layer includes: a plurality of first conductive traces arranged at intervals along a first direction of a two dimensional coordinate system, each of the first conductive traces extends along the second direction of the two dimensional coordinate system; and a plurality of second conductive traces columns arranged by a plurality of second conductive traces, each second conductive trace column comprises a plurality of second conductive traces arranged at intervals along the second direction of the two dimensional system, each second conductive trace column is located on a lateral side of the first conductive trace. Each second conductive trace of each conductive trace column and a corresponding first conductive trace are spaced from each other, the second conductive trace and the first conductive trace form a mutual inductance.

"The conductive layer of the touch sensing element is formed on a surface of the insulating substrate, the structure and process of the touch sensing element are much simpler compared to the touch panel which forms a conductive layer on two surfaces of the insulating substrate to achieve touch operations.

"According to one embodiment, the touch sensing element further includes a plurality of color traces, the color traces are located between the first conductive traces and the second conductive traces, and insulated from the first conductive traces and the second conductive traces.

"According to one embodiment, the touch sensing element further includes a plurality of first conductive leads and a plurality of second conductive leads, each first conductive lead is connected to an end of the first conductive trace, and each second conductive lead is connected to an end of the second conductive trace.

"According to one embodiment, a shape of the color traces and a pattern which is formed by the first conductive traces, the second conductive traces, the first conductive leads, and the second conductive leads are complementary, and the color traces are insulated from the first conductive traces, the second conductive traces, the first conductive leads, and the second conductive leads.

"According to one embodiment, the first conductive traces, the second conductive traces, the color traces, the first conductive leads, and the second conductive leads are formed by conductive wires.

"According to one embodiment, the first conductive traces, the second conductive traces, the color traces, the first conductive leads, and the second conductive leads are grid conductive wires formed by the intersection of conductive wires.

"According to one embodiment, the conductive wires which form the color traces are arranged in a grid form, a sawtooth form or a polyline form, and the conductive wires which form the color traces are truncated with intervals of a predetermined length.

"According to one embodiment, the conductive wires form a notch at the truncated portion, the notch is arranged in a line form in both the first and second direction of the two dimensional coordinate system.

"According to one embodiment, the conductive wires are made of a material selected from metal, indium tin oxide, transparent polymer materials, grapheme, and carbon nanotubes.

"According to one embodiment, each first conductive trace comprises a first main wire and a plurality of first lateral branches extended along a lateral direction of the main wire, each second conductive trace comprises a second main wire and a plurality of second lateral branches extended along a lateral direction of the second main wire, the first main wire and second main wire extend along the second dimension of the two dimensional coordinate system, ends of second main wires are spaced from each other, the first lateral branches and the second lateral branches are arranged at intervals alternately.

"According to one embodiment, the first lateral branches and the second lateral branches extend along the first direction of the two dimensional coordinate system in parallel to each other.

"According to one embodiment, the touch sensing element further includes a substrate layer, the substrate layer is located on one surface of the insulating substrate. A plurality of grooves are defined on the substrate layer, the first conductive traces and the second conductive traces are formed in the grooves, and the depth of the grooves is not less than the thickness of the first conductive traces and the second conductive traces.

"A touch panel includes a panel and a touch sensing element located on a surface of the panel, the touch sensing element includes an insulating substrate and a conductive layer located on a surface of the insulating substrate, the conductive layer includes:

"a plurality of first conductive traces, arranged at intervals along a first direction of a two dimensional coordinate system, each first conductive trace extending along a second direction of the two dimensional coordinate system; and

"a plurality of second conductive traces arranging to form a plurality of second conductive trace columns, each second conductive trace column comprises a plurality of second conductive traces arranged at intervals along the second direction of the two dimensional coordinate system, each second conductive trace column is located on a lateral direction of the first conductive trace; each second conductive trace of each conductive trace column is spaced from and forms a mutual inductance with a corresponding first conductive trace.

"According to one embodiment, the touch sensing element further includes a plurality of color traces, the color traces are located between the first conductive traces and the second conductive traces, and insulated from the first conductive traces and the second conductive traces.

"According to one embodiment, the touch sensing element further includes a plurality of first conductive leads and a plurality of second conductive leads, each first conductive lead is connected to an end of the first conductive trace, and each second conductive lead is connected to an end of the second conductive trace.

"According to one embodiment, a shape of the color traces and a pattern which is formed by the first conductive traces, the second conductive traces, the first conductive leads and the second conductive leads are complementary, and the color traces are insulated from the first conductive traces, the second conductive traces, the first conductive leads, and the second conductive leads.

"According to one embodiment, the first conductive traces, the second conductive traces, the color traces, the first conductive leads, and the second conductive leads are formed by conductive wires.

"According to one embodiment, the first conductive traces, the second conductive traces, the color traces, the first conductive leads and the second conductive leads are grid conductive wires formed by the intersection of conductive wires.

"According to one embodiment, wherein the conductive wires forming the color traces are arranged in a grid form, a sawtooth form or a polyline form, and the conductive wires which form the color traces are truncated with intervals of a predetermined length.

"According to one embodiment, the conductive wires define a notch at the truncated portion, the notch is arranged in the form of a line in both the first and second direction of the two dimensional coordinate system.

BRIEF DESCRIPTION OF THE DRAWINGS

"FIG. 1 is a schematic view of a touch panel in accordance with one embodiment.

"FIG. 2 is a schematic view of a touch sensing element of the touch panel in FIG. 1.

"FIG. 3 is an enlarged view of the circle III in FIG. 2.

"FIG. 4 is a schematic view of a touch sensing element in accordance with another embodiment.

"FIG. 5 is a schematic view of a color trace of the touch sensing element in FIG. 4.

"FIG. 6 is a partial enlarged view of part VI in FIG. 5."

For additional information on this patent application, see: Zhou, Fei. Touch Sensing Element and Touch Panel Having the Same. Filed July 5, 2013 and posted August 14, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4992&p=100&f=G&l=50&d=PG01&S1=20140807.PD.&OS=PD/20140807&RS=PD/20140807

Keywords for this news article include: Nanchang O-film Tech. Co. Ltd.

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Source: Politics & Government Week


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