KR20090131129A - Touch screen device and method of control the same - Google Patents

Abstract

PURPOSE: A touch screen device and a controlling device thereof are provided to distinguish locations of first and second wires which are electrically connected together, thereby receiving input of a touch signal. CONSTITUTION: First wires are extensively disposed in the first direction. Second wires are separated from the first wires. The second wires are arranged to cross the first wires in the second direction. A first signal generator(210) applies the first signal to the second wires. A second signal generator(220) applies the second signal to the first wires. An information processor(260) processes first location information and second location information from a first sensor unit(230) and a second sensor unit(240).

Description

TOUCH SCREEN DEVICE AND METHOD OF CONTROL THE SAME}

Embodiments relate to a touch screen device and a control method thereof.

As information processing technology develops, devices capable of inputting signals by external touch or the like are widely used.

In particular, a touch screen device in which a touched position is input to a screen on which an image is displayed is widely used.

Embodiments provide a touch screen device capable of multiple inputs at the same time and more accurately receiving a signal and a control method thereof.

In one embodiment, a touch screen device includes: a plurality of first wires extending in a first direction; Second wirings spaced apart from the first wirings and disposed to cross the first wirings in a second direction; A first signal generator for applying a first signal to the second wires; And a second signal generator configured to apply a second signal to the first wires.

In another embodiment, a control method of a touch screen device includes a plurality of first wires extending in a first direction, spaced apart from the first wires, and intersecting with the first wires in a second direction. Applying pressure to a portion of the touch screen device including second wires to electrically connect a portion of the first wires and a portion of the second wires; Applying a first signal to the second wires; Sensing the first signal from first wires electrically connected to the second wires; Applying a second signal to the first wires; And sensing the second signal from second wires electrically connected to the first wires.

In the touch screen device according to the embodiment, some of the first wires and some of the second wires are electrically connected by the touch, and the first and second signals may be sensed.

Therefore, the touch screen device according to the embodiment can identify the positions of the first wires and the second wires electrically connected to each other, and thus can receive the touch signal.

In addition, the touch screen device according to the embodiment may sense the first signals and the second signals generated by the multi-touch signal, and receive the touch signals.

In addition, the touch screen device according to the embodiment calculates an intermediate position of the connected first wires and the second wires when a plurality of first wires and second wires are connected by one touch signal.

Therefore, the touch screen device according to the embodiment can calculate the exact coordinates of the touch signal input by the user.

In the description of the embodiments, each panel, member, part, wiring, substrate, or electrode is formed on or under the "on" of each panel, member, part, wiring, substrate, or electrode. In the case of what is described as being intended, "on" and "under" include both "directly" or "indirectly" formed. In addition, the reference to the upper or lower parts of each component is described with reference to the drawings, the size of each component in the drawings may be exaggerated for description, and does not mean the size that is actually applied.

1 is a perspective view illustrating a touch screen device according to an embodiment. 2 is an exploded perspective view illustrating a touch panel. 3 is a block diagram illustrating a touch screen device according to an embodiment. 4 is a waveform diagram illustrating a first voltage signal and a second voltage signal.

Referring to FIG. 1, a touch screen device according to an embodiment includes a touch panel 100 and a controller 200.

1 and 2, the touch panel 100 has a plate shape. The touch panel 100 is transparent. The touch panel 100 is electrically connected to the controller 200. The touch panel 100 includes an upper substrate 110, a lower substrate 120, first wires 130, second wires 140, and a spacer 150.

The upper substrate 110 is transparent, flexible, and elastic. The upper substrate 110 may be a film. Examples of the material used as the upper substrate 110 may include synthetic resins.

The lower substrate 120 is spaced apart from the upper substrate 110 and is disposed below. The upper substrate 110 and the lower substrate 120 face each other, and form a space therebetween.

The lower substrate 120 may be transparent, and may be flexible or rigid. Examples of the material used as the lower substrate 120 include synthetic resin, glass or reinforced plastic.

A plurality of the first wires 130 extend in the Y-axis direction. The first wires 130 are disposed under the upper substrate 110. The first wires 130 are spaced apart from each other at regular intervals.

Thus, the first wires 130 divide the upper substrate 110 at regular intervals. Accordingly, each of the first wires 130 is disposed under each of the upper substrates 110.

A plurality of the second wires 140 extends in the X-axis direction. The second wires 140 are disposed on the lower substrate 120. The second wires 140 are spaced apart from each other at regular intervals in parallel to each other.

Therefore, the second wirings 140 divide the lower substrate 120 at regular intervals. Accordingly, the first wires 130 are disposed on the lower substrate 120 to determine respective positions.

The first wires 130 and the second wires 140 are transparent conductors. Examples of the material used as the first wires 130 and the second wires 140 may include indium tin oxide (ITO) or indium zinc oxide (IZO).

The spacer 150 is interposed between the upper substrate 110 and the lower substrate 120. The spacer 150 maintains a gap between the upper substrate 110 and the lower substrate 120.

The upper substrate 110 and the lower substrate 120 are spaced apart by the spacer 150. Accordingly, the first wires 130 and the second wires 140 are spaced apart from each other.

In more detail, the first wires 130 and the second wires 140 are spaced apart from each other when an external pressure such as a touch is not applied.

Referring to FIG. 3, the controller 200 may include a first voltage signal generator 210, a second voltage signal generator 220, a first sensor unit 230, a second sensor unit 240, and a timing controller. 250 and the information processing unit 260.

The first voltage signal generator 210 is electrically connected to the second wires 140. The first voltage signal generator 210 receives a control signal of the timing controller 250 and applies a first voltage signal VS1 to the second wires 140.

The second voltage signal generator 220 is electrically connected to the first wires 130. The second voltage signal generator 220 receives a control signal of the timing controller 250 and applies a second voltage signal VS2 to the first wires 130.

Referring to FIG. 4, the first voltage signal VS1 is a signal in which the first high voltage VH1 and the ground voltage VG are alternately formed, and the second voltage signal VS2 is the second high voltage VH2. ) And the ground voltage VG are alternately formed.

In this case, the first high voltage VH1 and the second high voltage VH2 are alternately formed.

Accordingly, when the first high voltage VH1 is applied to the second wires 140 by the first voltage signal generator 210, the second voltage signal generator 220 causes the second voltage signal generator 220 to be used. Ground voltage VG is applied to the first interconnections 130.

In addition, when the ground voltage VG is applied to the second wires 140 by the first voltage signal generator 210, by the second voltage signal generator 220, the first voltage is generated. The second high voltage VH2 is applied to the wirings 130.

The first sensor unit 230 is electrically connected to the first wires 130 and senses the first voltage signal VS1.

That is, some of the first wires 134 and 135 and some of the second wires 143 and 144 are electrically connected to each other by a user's touch or the like. In this case, the first voltage signal VS1 is input to the first sensor unit 230 through a portion 134 and 135 of the first wires 143 and 144 of the second wires connected to each other. do.

In addition, the first sensor unit 230 may determine the first position information of the first wires 130 connected to the second wires 140 by the sensed first voltage signal VS1. PI1) is transmitted to the information processing unit 260.

That is, the first sensor unit 230 identifies which of the first wires 130 the first voltage signal VS1 is sensed and transmits it to the information processor 260.

The second sensor unit 240 is electrically connected to the second wires 140 and senses the second voltage signal VS2.

Similarly, some of the first wires 134 and 135 and some of the second wires 143 and 144 are electrically connected to each other. In this case, the second voltage signal VS2 is input to the second sensor unit 240 through the portions 134 and 135 of the first interconnections and the portions 143 and 144 of the second interconnections connected to each other. do.

Similarly, the second sensor unit 240 may receive second position information of the second wires 140 connected to the first wires 130 by the sensed second voltage signal VS2. PI2) is transmitted to the information processing unit 260.

The timing controller 250 controls the first voltage signal generator 210, the second voltage signal generator 220, the first sensor 230, and the second sensor 240.

That is, the timing controller 250 controls the first voltage signal generator 210 and the second voltage signal generator 220 to control the first and second high voltages VH2. And alternately apply it to the 130 and the second wires 140.

In addition, the timing controller 250 may allow the first sensor unit 230 and the second sensor unit 240 to selectively sense the first voltage signal VS1 and the second voltage signal VS2, respectively. do.

That is, when the first high voltage VH1 is applied to the second wiring in the first voltage signal generator 210, the first sensor unit 230 is electrically connected to the first wirings 130. The second sensor unit 240 is electrically insulated from the second wires 140.

Accordingly, when a part of the first wires 134, 135 is connected to the second wires 143, 144 by a touch signal, the part of the first wires 134, 135 is applied from the part of the first wires 134, 135. The first sensor unit 230 may sense the first high voltage VH1.

In addition, when the second high voltage VH2 is applied to the first wiring in the second voltage signal generator 220, the first sensor 230 may be connected to the first wirings 130. Electrically insulated, the second sensor unit 240 is electrically connected to the second wires 140.

Accordingly, the second sensor unit 240 may sense the second high voltage VH2 applied from the portions 143 and 144 of the second wires.

The information processor 260 controls the timing controller 250. In addition, the information processing unit 260 processes the first location information PI1 and the second location information PI2 from the first sensor unit 230 and the second sensor unit 240.

The information processor 260 calculates one X coordinate by processing the first location information PI1. In addition, the information processor 260 processes the second position information PI2 to calculate one Y coordinate.

For example, when the first location information PI1 corresponds to a position corresponding to the fourth and fifth first interconnections 134 and 135, the X coordinate is the fourth and fifth first interconnections. Corresponds to the midpoint of (134, 135).

In addition, when the second position information PI2 corresponds to a position corresponding to the third and fourth second interconnections 143 and 144, the Y coordinate is the third and fourth fourth interconnections ( 143, 144).

In this way, the information processing unit 260 may filter the plurality of first and second location information PI2 to generate one X coordinate and one Y coordinate.

Therefore, the touch screen device according to the embodiment can receive a touch signal more accurately.

In addition, even though two touch signals are input to the touch panel 100, the first sensor unit 230 and the second sensor unit 240 may have two groups of first location information PI1 and two groups. The second location information PI2 is transmitted to the information processor 260.

Accordingly, the information processor 260 may calculate coordinates of two points at which the touch signal is input.

Accordingly, the touch screen device according to the embodiment may receive multiple touch signals.

5 is a flowchart illustrating a method of controlling a touch screen device according to an embodiment.

Referring to FIG. 5, some of the first wires and some of the second wires are electrically connected by the user's touch signal.

For example, as shown in FIG. 4, the fourth and fifth first wirings 134 and 135 and the third and fourth second wirings 143 and 144 are electrically connected.

Subsequently, the first voltage signal generator 210 transmits the first high voltage VH1 through the portions 134 and 135 of the first wires connected to each other and the portions 143 and 144 of the second wires. 1 is applied to the sensor unit 230. (S20)

The first sensor unit 230 senses the first high voltage VH1 (S30), and transmits first location information PI1 to the information processor 260 (S40).

For example, the first sensor unit 230 transmits first position information PI1 of the fourth and fifth first wires 134 and 135 to the information processing unit 260.

Thereafter, the information processor 260 calculates the first position information PI1 and generates one X coordinate to which a touch signal is input.

Similarly, the second voltage signal generator 220 may connect the second high voltage VH2 through the portions 143 and 144 of the second wires connected to each other and the portions 134 and 135 of the first wires. 2 is applied to the sensor unit 240. (S60)

The second sensor unit 240 senses the second high voltage VH2 (S70) and transmits second position information PI2 to the information processor 260 (S80).

Thereafter, the information processor 260 processes the second position information PI2 to generate one Y coordinate to which the touch signal is input.

In this manner, the touch screen device according to the embodiment receives a touch signal.

Although the above description has been made based on the embodiments, these are merely examples and are not intended to limit the present invention. Those skilled in the art to which the present invention pertains may not have been exemplified above without departing from the essential characteristics of the present embodiments. It will be appreciated that many variations and applications are possible. For example, each component specifically shown in the embodiment can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

1 is a perspective view illustrating a touch screen device according to an embodiment.

2 is an exploded perspective view illustrating a touch panel.

3 is a block diagram illustrating a touch screen device according to an embodiment.

4 is a waveform diagram illustrating a first voltage signal and a second voltage signal.

5 is a flowchart illustrating a method of controlling a touch screen device according to an embodiment.

Claims (10)

A plurality of first wires extending in a first direction; Second wirings spaced apart from the first wirings and disposed to cross the first wirings in a second direction; A first signal generator for applying a first signal to the second wires; And And a second signal generator configured to apply a second signal to the first wires. The touch screen device of claim 1, wherein the first signal and the second signal are alternately applied. The display apparatus of claim 1, further comprising: a first sensor unit electrically connected to the first wires and configured to sense the first signal; And And a second sensor unit electrically connected to the second wires and configured to sense the second signal. The touch screen device of claim 3, further comprising a timing controller configured to control the first signal generator, the second signal generator, the first sensor, and the second sensor. The touch screen device of claim 1, wherein the first wires are electrically connected to the second wires by an external pressure. The method of claim 5, wherein the first position information of the first wirings on which the first signal of the first wirings is sensed; And an information processor configured to receive second position information of second wires on which the second signal is sensed. The touch screen device of claim 6, wherein the information processor is further configured to process the first location information and the second location information to generate one input coordinate. A part of the touch screen device including a plurality of first wires extending in a first direction and second wires spaced apart from the first wires and intersecting the first wires in a second direction. Applying pressure to electrically connect a portion of the first wires and a portion of the second wires; Applying a first signal to the second wires; Sensing the first signal from first wires electrically connected to the second wires; Applying a second signal to the first wires; And And sensing the second signal from second wires electrically connected to the first wires. The method of claim 8, further comprising: sensing first signal and collecting first location information of first wires electrically connected to the second wires; And Sensing the second signal to collect second position information of second wires electrically connected to the first wires. The method of claim 9, further comprising generating one input coordinate by processing the first location information and the second location information.

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