KR20120066343A - Driving method of touch panel and driving method of display apparatus having a touch panel - Google Patents

Abstract

PURPOSE: An operating method of a touch panel and a display device including the same are provided to accurately detect a location of a touched part and to use a light emitting device and a light receiving device. CONSTITUTION: A touch panel unit turns on a plurality of light emitting devices(S21). The touch panel unit receives beam of the light emitting device by turning on a plurality of light receiving devices(S22). The touch panel unit converts sensing data in a mathematical transform mode. The touch panel unit obtains a center of the sensing data(S23). The touch panel unit calculates a touch location by reverse-conversion of data(S24).

Description

A driving method of a touch panel and a driving method of a display device including a touch panel {Driving Method of Touch Panel and Driving Method of Display Apparatus having a Touch Panel}

The present invention relates to a method of driving a touch panel and a method of driving a display device including a touch panel.

In general, a touch panel is an input device attached to a surface of a display panel and configured to execute a predetermined command when a user presses a portion corresponding to an icon or a selection button displayed on a screen of the display panel with a finger or a pen.

Such touch panels are simpler to operate than other input devices, and thus are widely used in electronic unmanned guide devices.

An object of the present invention is to provide a method of driving a touch panel using a light emitting element and a light receiving element, and a method of driving a display device including a touch panel.

A driving method of a touch panel according to the present invention is a method of driving a touch panel comprising at least one light emitting device for emitting light and at least one light receiving device for receiving light emitted by the light emitting device, the plurality of frame periods. In the frame period, each of the plurality of light emitting devices is sequentially turned on, and the activation step of activating the light receiving device corresponding to the light emitting devices and from the time when the touch occurs to the time when the touch ends And ignoring the sensed data generated in at least one frame period of the frame period corresponding to the touch period of.

The method may further include, after the disregarding step, outputting information on the touched position by using the sensed data of the remaining frame periods except the frame period corresponding to the ignored sense data among the frame periods corresponding to the touch period. Can be.

In the disregarding step, the sensing data generated in at least the first frame period of the frame period corresponding to the touch period may be ignored.

In the disregarding step, the sensing data generated in at least the last frame period of the frame period corresponding to the touch period may be ignored.

In the disregarding step, the sensing data generated in at least the first frame period and the last frame period of the frame period corresponding to the touch period may be ignored.

The frame period may include a vertical frame period for turning on the plurality of light emitting elements arranged in a vertical direction and a horizontal frame period for turning on the plurality of light emitting elements arranged in a horizontal direction.

In addition, the method of driving another touch panel according to the present invention is a method of driving a touch panel comprising at least one light emitting element for emitting light and at least one light receiving element for receiving light emitted by the light emitting element, Turn-on the plurality of light emitting elements sequentially in a frame period of s, and activate the light receiving element corresponding to the light emitting elements, and the touch ends from the time when the touch occurs. And outputting information on the touched position by using the sensed data generated in the remaining frame period except the sensed data generated in at least one frame period of the frame period corresponding to the touch period up to the point of time. When the occurrence and the end of the touch are located within one frame period or two consecutive frames If the location is within the period, the information of the touched location may not be output.

In addition, another method of driving a touch panel according to the present invention includes a display panel including an active area in which an image is displayed and a dummy area disposed outside the effective area, and the dummy of the display panel. A driving method of a display apparatus including a plurality of light emitting elements and a plurality of light receiving elements disposed in an area, each of the plurality of light emitting elements being sequentially turned on in a plurality of frame periods (Turn-On) Except for the sensing data generated in at least one frame period of the frame period corresponding to the touch period from the time when the touch is generated to the time when the touch is terminated and the touch period when the touch is terminated. Output stage for outputting information of the touched position by using the sensing data generated in the frame period It may include a system.

In addition, when the touch occurs and the end of the touch is located within one frame period or within two consecutive frame periods, the information on the touched position may not be output.

In addition, a driving method of a display apparatus according to the present invention includes a display panel including an active area in which an image is displayed and a dummy area disposed outside the effective area, and the dummy area of the display panel. In the driving method of a display device including a plurality of light emitting elements and a plurality of light receiving elements arranged, each of the plurality of light emitting elements are sequentially turned on in a plurality of frame periods (Turn-On), An activation step of activating the light-receiving element corresponding to the light emitting element, a setting step of setting a virtual frame period from a time point when a touch occurs, and a touch using sensed data generated according to a touch in the virtual frame period. It may include a first operation step of calculating the information of the location of the location.

The method may further include a second calculation step of calculating the information of the touched location by using the sensed data generated according to the touch in the frame period before the setting of the virtual frame period after the calculating step.

In addition, the virtual frame period and the frame period may partially overlap.

In addition, another driving method of the display apparatus according to the present invention includes a display panel including an active area in which an image is displayed and a dummy area disposed outside the effective area, and the dummy area of the display panel. A driving method of a display apparatus including a plurality of light emitting elements and a plurality of light receiving elements, wherein the plurality of light emitting elements are turned on in a plurality of frame periods, respectively, The number of the light emitting devices that are turned on in at least one frame during the activation period of activating the light receiving devices corresponding to the light emitting devices and the touch period from when a touch is generated to when the touch is terminated is a non-touch period. The number of the light emitting devices that are turned on in at least one frame during the above may be included.

Further, the plurality of light emitting devices are sequentially turned on during the frame period corresponding to the touch period, and at least one of the light emitting devices of the plurality of light emitting devices is not turned on during the frame period corresponding to the touchless period. You may not.

The difference in turn-on time between the two light emitting devices that are continuously turned on during the frame period corresponding to the touch period is the two light emission that are continuously turned on during the frame period corresponding to the touchless period. It may be less than the difference in turn-on time between the devices.

The driving method of the touch panel and the driving method of the display apparatus including the same according to the present invention have the effect of detecting the position of the touched part more quickly and accurately by using the light emitting element and the light receiving element.

1 to 2 are views for explaining the configuration of a touch panel according to the present invention;
3 to 17 are views for explaining in detail the touch panel according to an embodiment of the present invention;
18 to 30 are views for explaining in detail a touch panel according to another embodiment of the present invention;
31A to 37 are views for explaining a display device including a touch panel according to the present invention;
38 to 42 are views for explaining a method of driving a touch panel according to the present invention;
43 to 46 are views for explaining a functional block of a display device including a touch panel according to the present invention; And
47 to 68 are views for explaining another driving method of the touch panel according to the present invention.

Hereinafter, a method of driving a touch panel and a method of driving a display device including a touch panel according to the present invention will be described in detail with reference to the accompanying drawings.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. It is to be understood that the present invention is not intended to be limited to the specific embodiments but includes all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In describing the present invention, terms such as first and second may be used to describe various components, but the components may not be limited by the terms. The terms may be used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The term and / or may include a combination of a plurality of related items or any item of a plurality of related items.

When an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may be present in between Can be understood. On the other hand, when it is mentioned that an element is "directly connected" or "directly connected" to another element, it can be understood that no other element exists in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. The singular expressions may include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used interchangeably to designate one or more of the features, numbers, steps, operations, elements, components, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries can be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are, unless expressly defined in the present application, interpreted in an ideal or overly formal sense .

In addition, the following embodiments are provided to explain more fully to the average person skilled in the art. The shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

1 to 2 are views for explaining the configuration of the touch panel according to the present invention.

Referring to FIG. 1, a touch panel according to an embodiment of the present invention may include a substrate 100 and an optical device disposed on the substrate 100. Here, the optical device may include a light emitting device 120 and a light receiving device 130.

The substrate 100 needs to be substantially transparent for light transmittance, and also needs a supporting force capable of supporting the light emitting device 120 and the light receiving device 130. Accordingly, the substrate 100 may be a film substrate or a glass substrate. Alternatively, the substrate 100 may be a plastic substrate.

In FIG. 1, only the case where the light emitting device 120 and the light receiving device 130 are disposed on the substrate 100 is illustrated. Alternatively, the substrate 100 may be omitted, and the light emitting device 120 and the light receiving device 130 may be omitted. ) May be disposed on a display panel (not shown). In this case, the display panel replaces the role of the substrate 100. This will be described in detail below.

The protective layer 110 may be further disposed on the substrate 100. The protective layer 110 may prevent the substrate 100 from being damaged by pressure applied from the outside. To this end, the protective layer 100 may include a glass material or a resin material.

The protective layer 110 may be disposed on the substrate 100 by laminating the protective film in the form of a film on the surface of the substrate 100.

The light emitting device 120 and the light receiving device 130 may be disposed at an edge of the substrate 100.

The light emitting device 120 may emit a predetermined beam, for example, an infrared beam, a visible light beam, a micro-wave beam, an acoustic-wave beam, and a vibration-wave beam. An element emitting at least one of the beams is hereinafter referred to as a light emitting element 120.

The light receiving element 130 may receive a beam emitted from the light emitting element 120.

In addition, although not shown, the touch panel according to an embodiment of the present invention further includes a controller for calculating a position of a point selected by a user, and among the controller, the light emitting device 120 and the light receiving device 130. It may further include a cable (not shown) for connecting at least one.

The operation of the touch panel according to an embodiment of the present invention described above will be described with reference to FIG. 2.

When the predetermined input means 140, for example, a pen, a finger, or the like is positioned at a predetermined point on the substrate 100, the input means 140 may block the beam emitted from the light emitting device 120 at that point. have.

Then, the beam emitted from the light emitting device 120 may not reach the light receiving device 130. In this case, the controller (not shown) may calculate the position of the point where the input means 140 is located, that is, the touched point, by checking the light receiving element 130 disposed at a position corresponding to the portion where the beam is blocked.

Meanwhile, a protective cover 150 may be disposed outside the light emitting device 120 and the light receiving device 130. The protective cover 150 may block the light incident from the outside to prevent a malfunction of the light receiving device 130.

3 to 17 are views for explaining the touch panel according to an embodiment of the present invention in more detail. Hereinafter, the light emitting device 120 is illustrated in a triangular form and the light receiving device 130 is illustrated in a circle form for better understanding. In addition, hereinafter, the light emitting device 120 and the light receiving device 130 are illustrated as being disposed outside the substrate 100 to help understand the light emitting device 120 and the light receiving device 130. It is possible to arrange in the overlapped area. In FIG. 3, reference numerals 300, 310, 320, and 330 are partial regions of the substrate 100.

Referring to FIG. 3, the light receiving element 130 and the light emitting element 120 may be alternately arranged. That is, the light receiving element 130 and the light emitting element 120 may be alternately arranged.

Preferably, as shown in FIG. 3, the first region 300, the second region 310 facing the first region 300, the first region 300 and the second region 310 of the substrate 100. The light receiving element 130 and the light emitting element 120 may be alternately disposed in the third region 320 and the fourth region 330 therebetween.

In addition, the number of light receiving elements 130 may be larger than the number of light emitting elements 120.

To this end, as shown in FIG. 3, the light receiving elements 130 may be disposed at both ends of the first, second, third, and fourth regions 300, 310, 320, and 330 of the substrate 100. As such, when the light receiving elements 130 are disposed at both ends of the first, second, third, and fourth regions 300, 310, 320, and 330 of the substrate 100, the touched portions are touched at the edges of the substrate 100. The part can be detected more precisely, so that the accuracy of the touch panel can be improved.

As described above, when the light receiving elements 130 are disposed at both ends of the first, second, third, and fourth regions 300, 310, 320, and 330 of the substrate 100, the light receiving elements are received between two adjacent regions. The element 130 may be continuously arranged. For example, two light receiving elements 130 are continuously disposed between the first region 300 and the third region 320 of the substrate 100, such as B, and the first region of the substrate 100 ( Two light-receiving elements 130 are continuously disposed between the 300 and the fourth region 330, such as C, and between the second and third regions 310 and 320 of the substrate 100. As shown in FIG. 2, two light receiving elements 130 are continuously disposed, and two light receiving elements 130 are continuously disposed as shown between D and the second region 310 and the fourth region 330 of the substrate 100. It can be.

Alternatively, a plurality of light receiving elements 130 may be disposed between the two light emitting elements 120 to increase the number of light receiving elements 130 than the number of light emitting elements 120. In this case, at least two light receiving elements 130 may be continuously arranged.

Although not shown, at least two light emitting devices 120 may be continuously disposed under the condition that the number of light receiving devices 130 is greater than the number of light emitting devices 120.

When the touch panel is driven according to an embodiment of the present invention, the plurality of light emitting devices 120 may be sequentially turned on. Here, the light emitting device 120 is turned on is that the light emitting device 120 emits a predetermined beam. In addition, when the light receiving element 130 is turned on, it may mean that the light receiving element 130 is activated, and the touch position is detected according to whether the beams of the light receiving element 130 are activated. In addition, when the light receiving element 130 is turned off, it may mean that the light receiving element 130 is not activated, and whether the beam is received or not received by the light receiving element 130 that is turned off is a touch position. May not be considered at all.

For example, when the input means is located at a specific position P as shown in FIG. 5, the beam emitted by the first light emitting element 121 of the plurality of light emitting elements 120 may be blocked at the specific position P. FIG. have. Accordingly, the first light receiving element 131 of the plurality of light receiving elements 130 may not receive the beam emitted by the first light emitting element 121. Hereinafter, for convenience of explanation, a case where the light emitting device 120 and the light receiving device 130 are disposed in different areas of the substrate 100 will be described as an example.

In addition, when the second light emitting device 122 of the plurality of light emitting devices 120 is turned on, the beam emitted by the second light emitting device 122 may be blocked at a specific position P, and the plurality of light receiving devices may be blocked. The second light receiving element 132 of 130 may not receive the beam emitted by the second light emitting element 122.

Here, the specific position P where the input means is located as data on the positions of the first light emitting element 121 and the first light receiving element 131, and the positions of the second light emitting element 122 and the second light receiving element 132. ) Can be obtained.

On the other hand, with reference to FIG. 6, the number of light emitting devices 120 is greater than or equal to the number of light receiving devices 130 will be described.

In the case of FIG. 6, when an arbitrary light emitting device 120 emits a beam, the second light receiving device A2 may not receive a beam emitted by the light emitting device 120 among the plurality of activated light receiving devices 130. have. The first light receiving element A1 and the third light receiving element A3 adjacent to the second light receiving element A2 may receive a beam emitted by the light emitting element 120.

In this case, it can be predicted that the specific position P where the input means is located, that is, the touch position, is located in an area between the first light receiving element A1 and the third light receiving element A3 spaced apart from each other by a D1 interval.

On the other hand, as shown in FIG. 7, when the number of light receiving elements 130 is larger than the number of light emitting elements 120, when any of the light emitting elements 120 emits a beam, a plurality of light receiving elements 130 activated are selected. 20 The light receiving element A20 may not receive a beam emitted by the light emitting element 120, and the tenth light receiving element A10 and the thirtieth light receiving element A30 adjacent to the twentieth light receiving element A20 are light emitting elements. 120 may receive the beam emitted.

In this case, the specific position P where the input means is located, that is, the touch position is located in an area between the tenth light receiving element A10 and the thirtieth light receiving element A30 spaced apart by a D2 interval smaller than D1. It can be predicted. That is, the case of FIG. 7 has higher accuracy of prediction at the touch position P than the case of FIG. 6.

On the other hand, it may also be possible to increase the number of the light receiving element 130 and the light emitting element 120 to increase the detection accuracy of the touch position.

However, in this case, the manufacturing cost may increase due to the increase in the number of light emitting devices 120. In addition, since the plurality of light emitting devices 120 must be turned on one by one when the touch panel is driven, when the number of light emitting devices 120 increases, the time required for calculating the touch position increases, thereby increasing the response speed of the touch panel. Can be degraded.

In addition, considering that one light emitting device 120 emits a beam at a predetermined angle, even if the number of light emitting devices is increased, the improvement in the accuracy of detection of the touch position may be insignificant.

Therefore, in order to reduce the manufacturing cost and improve the detection speed with respect to the touch position while improving the reaction speed, it may be desirable to make the number of light receiving elements 130 larger than the number of light emitting elements 120.

Meanwhile, in order to increase the number of light receiving elements 130 to be larger than the number of light emitting elements 120, the light receiving elements 130 are disposed at substantially equal intervals as shown in FIG. 8, and the light emitting elements 120 are two light receiving elements. It may be possible to arrange between 130.

In this case, an interval L1 between two light receiving elements 130 continuously arranged may be greater than a shortest distance L2 between any light emitting element 120 and the light receiving element 130.

In addition, an interval L1 between two adjacent light receiving elements 130 may be smaller than an interval L3 between two adjacent light emitting elements 120.

In addition, it may be possible to arrange any two light emitting devices 120 to correspond to each other. For example, as illustrated in FIG. 8, the first light emitting device B1 disposed in the first region 300 of the substrate 100 and the second region 310 facing the first region 300 of the substrate 100. The second light emitting devices B2 disposed in the may overlap each other in a direction orthogonal to the first region 300 and the second region 310.

Alternatively, it may be possible to arrange two arbitrary light emitting elements 120 alternately with each other. For example, an extension line E1 perpendicular to at least one substrate 100 of the plurality of light emitting devices 120 may correspond to an area between two adjacent light receiving devices 130.

In the touch panel according to the exemplary embodiment of the present invention, since the plurality of light receiving devices 130 may receive a beam emitted from one light emitting device 120, the light emitting device 120 and the light emitting device 120 as shown in FIGS. It is not necessary to align the light receiving element 130.

Next, referring to FIGS. 10 to 11, the reason why the light emitting device 120 is disposed between any two light receiving devices 130 will be described.

Referring to FIG. 10, an example is disclosed in which light emitting devices 120 are continuously disposed in an arbitrary area of the substrate 100 and light receiving devices 130 are continuously disposed in another area.

In this case, since the light receiving elements 130 arranged in other regions of the substrate 100 receive beams emitted by the light emitting elements 120 disposed in any region of the substrate 100, the light receiving elements ( It may be difficult to detect whether the area DZ of the 130 is touched. As such, an area in which it is difficult to detect whether a touch is touched may be called a dead zone (DZ).

On the other hand, as shown in FIG. 11, when the light emitting device 120 is disposed between any two light receiving devices 130, the size of the dead zone DZ may be reduced. Thereby, the precision of a touch panel can be improved.

Meanwhile, in the touch panel according to the exemplary embodiment of the present invention, the beam radiation angle of the light emitting device 120 may be adjusted.

For example, assume that any of the first light emitting elements 121 can emit a beam at an angle of θ2 substantially as shown in FIG. 12.

In this case, the beam emitted by the first light emitting element 121 may proceed to the regions S1, S2, and S3, whereby the light receiving elements 130 of a to j disposed in one region of the substrate 100 may be formed. 1 The light emitting device 121 may receive the beam emitted.

Here, when the c light receiving element 130 and the j light receiving element 130 are compared, the distance between the j light receiving element 130 and the first light emitting element 121 is c light receiving element 130 and the first light emitting element 121. Greater than the interval between them. Accordingly, the sensitivity of the j light receiving element 130 to the beam emitted by the first light emitting element 121 may be lower than the sensitivity of the c light receiving element 130. Therefore, even when no touch occurs in the S3 region, the probability that the j light receiving element 130 does not receive the beam emitted by the first light emitting element 121 is relatively higher than that of the c light receiving element 130, and thus S3. There is a possibility that the touch panel may be malfunctioned by recognizing that a touch occurs in the S3 region even though a touch does not occur in the region.

On the other hand, in the touch panel according to the present invention, although the light receiving element 130 from a to j is in the light receiving range of the beam emitted by the first light emitting element 121, the light emitting element 130 of the light emitting element 121 emits light to the beam emitted by the first light emitting element 121. The sensitivity of the light-receiving element 130 from f to j is lower than that of the light-receiving element 130 from a to e. That is, when the first light emitting element 121 is turned on, the light receiving element 130 from a to e is activated, and the light receiving element 130 from f to j is not activated. In other words, the radiation angle of the first light emitting device 121 may be adjusted to θ1 smaller than θ2.

Alternatively, some of the light receiving elements 130 of the plurality of light receiving elements 130 positioned within the light emission range of the arbitrary light emitting elements 130 may be turned on, and the others may be turned off.

For example, in FIG. 12, the first light emitting element 121 may emit light at an emission angle of θ 2. In this case, the light receiving element 130 from a to j may be located within the light emission range of the first light emitting element 121.

Here, the light receiving element 130 of a to e is turned on among the light receiving elements 130 of a to j positioned within the light emission range of the first light emitting element 121, and the light receiving element 130 of f to j is turned on. Can be turned off.

In other words, at least one light receiving element 130 positioned within the light emission range of any light emitting element 120 positioned in the first region of the substrate may be turned on. Here, the light receiving elements 130 corresponding to any light emitting element 120 positioned in the first region of the substrate may be located at least in a second region facing the first region of the substrate.

In addition, the distance between the first light emitting element 121 disposed in the first region of the substrate and the light receiving element 130 disposed in the second region of the substrate activated corresponding thereto may correspond to the first light emitting element 121 and the corresponding one. It may be less than the interval of the light receiving element 130 is not activated.

For example, in FIG. 12, a to e light-receiving elements 130 that are turned on to correspond to the first light-emitting element 121 among a to j light-receiving elements 130 disposed in the second region of the substrate. And the distance between the first light emitting device 121 and the first light emitting device 121 and the first light emitting device 121, f to j, which are turned off corresponding to the remaining light receiving device 130, that is, the first light emitting device 121. It may be less than the interval between).

That is, the light receiving elements 130 from a to e may be disposed closer to the first light emitting element 121 than the light receiving elements 130 from f to j.

Also, the distance between the c light receiving element 130 and the first light emitting element 121 among the light receiving elements 130 from a to e may be smaller than the distance between the other light receiving elements 130 and the first light emitting element 121. Can be. That is, the distance between the c light receiving element 130 and the first light emitting element 121 may be the shortest.

If only the c light receiving element 130 is turned on in response to the first light emitting element 121, one light receiving element 130 which is closest to the first light emitting element 121 among the plurality of light receiving elements 130, That is, it can be seen that only the c light receiving element 130 is activated.

Alternatively, in order to more reliably prevent malfunction of the touch panel, it may be possible to activate only the light receiving element 130 disposed in the center of any of the three light receiving elements 130 arranged side by side.

For example, as shown in FIG. 13, when the second light emitting device 120 of the light emitting device 120 emits a beam, the light receiving elements a to j arranged side by side in an arbitrary region of the substrate 100 ( A to c light receiving elements 130 and i and j light receiving elements 130 are turned off, and d to h light receiving elements disposed between c light receiving element 130 and i light receiving element 130 are The device 130 may be turned on.

In other words, the at least one light receiving element 130 positioned within the light emission range of the arbitrary light emitting element 120 is turned on and is located in an area outside the light emission range of the arbitrary light emitting element 120. 130 may be Off.

In addition, in order to increase the detection efficiency of the touch, it is possible to turn on at least three light-receiving elements 130 positioned within the light emission range of the arbitrary light-emitting elements 120. As such, when at least three light receiving elements 130 are activated corresponding to one light emitting element 120, a touch of a relatively large object may be easily detected, and a touch position of a relatively large object may be more easily. It can be detected.

The case of FIG. 14 is similar to that of FIG. 12, and thus a detailed description of FIG. 14 will be omitted.

Meanwhile, the number of light receiving elements 130 that are activated corresponding to one light emitting element 120 may be adjusted differently.

For example, as shown in FIG. 15, the number of light receiving elements 130 and the substrate 100 that are turned on in correspondence to the first light emitting element X disposed on the long side LS side of the substrate 100. The number of the light receiving elements 130 that are turned on in correspondence to the second light emitting element Y disposed on the short side (SS) side may vary. Preferably, the number of light receiving elements 130 that are turned on in correspondence with the first light emitting device X may be larger than the number of light receiving elements 130 which are turned on in correspondence with the second light emitting device Y.

Since the first light emitting device X is disposed on the long side LS side of the substrate 100, the light receiving device receives a beam emitted by the first light emitting device X and the first light emitting device X as shown in FIG. 15. The spacing between 130 is relatively small. On the other hand, since the second light emitting element Y is disposed on the short side SS side of the substrate 100, a light receiving element for receiving a beam emitted by the second light emitting element Y and the second light emitting element Y ( 130) may be relatively large.

Accordingly, even if the radiation angle θ10 of the first light emitting device X is larger than the radiation angle θ20 of the second light emitting device Y, the light receiving device for the beam emitted by the first light emitting device X ( The sensitivity of the 130 may not be reduced.

As such, it is possible to adjust the number of light receiving elements 130 that are activated by adjusting the radiation angles of two arbitrary light emitting elements 120.

Alternatively, as shown in FIGS. 16A to 16B, it is possible to differently adjust the number of light-receiving elements 130 that are activated without changing the radiation angle of the light-emitting element 120.

For example, varying the number of light receiving elements 130 activated corresponding to the first light emitting element X1 and the second light emitting element Y1 which are disposed substantially parallel to each other in the same region of the substrate 100. It is possible.

Preferably, the number of light receiving elements 130 that are turned on in correspondence to the second light emitting element Y1 disposed closer to the short side SS of the substrate 100 than the first light emitting element X1 is determined as the first number. The number of light-receiving elements 130 that are turned on in correspondence to the light-emitting element X1 may be greater.

In the case of the second light emitting device Y1, the light emitting device 130 is disposed on the second light emitting device Y1 and the short side SS of the substrate 100 because the second light emitting device Y1 is disposed adjacent to the short side SS of the substrate 100. The interval between them is relatively smaller than that of the first light emitting element X1.

Therefore, even though the emission angle θ1 of the first light emitting device X1 and the second light emitting device Y1 is substantially the same, the number of light receiving devices 130 that are turned on corresponding to the second light emitting device Y1 is larger. Can lose.

Alternatively, as shown in FIG. 16B, the radiation angle θ5 of the second light emitting device Y1 disposed closer to the short side SS of the substrate 100 than the first light emitting device X1 may be set to the first light emitting device X1. It may be possible to make larger than).

In detail, in the case of the second light emitting device Y1, the second light emitting device Y1 is disposed adjacent to the short side SS of the substrate 100, and thus, the second light emitting device Y1 is disposed at the short side SS of the second light emitting device Y1 and the substrate 100. The distance between the light receiving elements 130 is relatively smaller than that of the first light emitting element X1. Therefore, the radiation angle θ4 in the short side SS direction of the adjacent substrate 100 of the second light emitting device Y1 may be larger than that of the first light emission X1.

When the extension line E2 of the first light emitting element X1 is set in the direction orthogonal to the long side LS of the substrate 100, the extension line E2 is directed toward the first short side SS1 of the substrate 100. Direction is the emission angle of the first light emitting device (X1) is θ6, the radiation angle of the first light emitting device (X1) in the direction from the extension line E2 toward the second short side (SS2) of the substrate 100 is assumed to be θ7 In this case, the sum of θ6 and θ7 may be the total emission angle θ1 of the first light emitting device X1.

In addition, when setting the extension line E3 of the second light emitting element Y1 in the direction orthogonal to the long side LS of the substrate 100, the first short side SS1 of the substrate 100 is extended from the extension line E3. The radiation angle of the second light emitting element Y1 in the direction toward the direction of θ3, and the radiation angle of the second light emitting element Y1 in the direction from the extension line E2 toward the second short side SS2 of the substrate 100 is θ4. In this case, the sum of θ3 and θ4 may be the total emission angle θ5 of the second light emitting device Y1.

Here, θ3 and θ6 may be substantially the same. On the other hand, θ4 may be larger than θ7.

As described above, even if θ4 is larger than θ7, the second light emitting device Y1 is disposed adjacent to the second short side SS2 of the substrate 100, and thus, the second light emitting device Y1 and the substrate 100 may be disposed. The distance between the light receiving elements 130 disposed on the two short sides SS2 is relatively smaller than that of the first light emitting element X1, and accordingly, the light receiving elements 130 disposed on the second short side SS2 of the substrate 100 are disposed. Sensitivity to the beam emitted by the second light emitting device Y1 may be sufficiently high.

In FIG. 16B, the second light emitting device Y1 may be positioned at the outer region or the end of the first region of the substrate. On the other hand, the first light emitting device X1 may be located at the center of the first region of the substrate as compared to the second light emitting device Y1. In consideration of this, the first light emitting device X1 may be referred to as a central light emitting device, and the second light emitting device Y1 may be referred to as an outer light emitting device.

As such, the number of light-receiving elements 130 that are turned on in correspondence with the second light-emitting element Y1 positioned at the outer side or the end of the first region of the substrate and the first light-emitting element X1 positioned at the center of the first region The number of light-receiving elements 130 that are turned on in correspondence to the?

For example, as shown in FIG. 16B, the number of light receiving elements 130 that are turned on in correspondence to the second light emitting element Y1 is eight, and the light receiving elements that are turned on in correspondence with the first light emitting element X1 ( 130) may be more than five.

In addition, as in FIG. 16B, the radiation angle θ5 of the second light emitting device Y1 may be larger than the radiation angle θ1 of the first light emitting device X1.

The adjustment of the radiation angle of the light emitting device 120 described above may be automatically adjusted according to the intensity of the beam detected by each of the light receiving devices 130 with respect to any light emitting device 120. For example, while the light emitting device 120 is turned on in the radiation angle adjustment mode, the light intensity of the beams received by each light receiving device 130 may be measured while turning on all the light receiving devices 130 at once or sequentially. Can be.

As a result of the measurement, the light receiving elements 130 having the intensity of the received beams lower than a predetermined threshold may be set to not be activated in correspondence to the corresponding light emitting elements 120. Using this method, it is not necessary to manually adjust the radiation angle of each light emitting device 120.

On the other hand, in order to increase the reliability of the touch position detection, the radiation angle of one light emitting device 120 may be preferably set within the range of approximately 30% to 95% of the maximum radiation angle.

On the other hand, in order to reduce the size of the dead zone it may be possible to place the position of the light receiving element 130 behind the light emitting element 120.

For example, as shown in FIG. 17, the light receiving device 130 is disposed farther from the center of the substrate 100 than the light emitting device 120. Then, since the first light receiving element Z10 can receive the beam emitted by the first and second light emitting elements X10 and Y10 disposed at the edge of the substrate 100 more effectively, the dead zone can be further reduced. will be.

To this end, the distance between the end of the substrate 100 and the light receiving device 130 and the distance between the end of the substrate 100 and the light emitting device 120 may be different.

For example, when the light emitting device 120 and the light receiving device 130 are disposed outside the substrate 100 as shown in (a), the shortest distance D20 between the end of the substrate 100 and the light receiving device 130 is present. It can be made larger than the shortest distance (D10) between the end of the substrate 100 and the light emitting device (120). Alternatively, when the light emitting device 120 and the light receiving device 130 are disposed at a position overlapping with the substrate 100 as shown in (b), the shortest distance D20 between the end of the substrate 100 and the light receiving device 130 is present. It can be made smaller than the shortest distance (D10) between the end of the substrate 100 and the light emitting device (120).

18 to 30 are diagrams for describing a touch panel according to another exemplary embodiment of the present invention in more detail. Hereinafter, the description of the parts described in detail above will be omitted.

Referring to FIG. 18, the density of the optical device 200 disposed on the substrate 100 may be changed according to the position of the substrate 100. Preferably, the distance between two adjacent optical elements 200 may become smaller toward the outside of the substrate 100. That is, the optical elements 200 may be densely arranged toward the outer side of the substrate 100.

For example, the distance D11 between two adjacent optical elements 200 in the center region of the substrate 100 may be greater than the distance D10 between two adjacent optical elements 200 in the outer region of the substrate 100. have.

Here, the spacing between two adjacent light emitting devices 200 may be a distance between two adjacent light emitting devices 120, a space between two adjacent light receiving devices 130, or an adjacent light emitting device 120 and a light receiving device 130. It is possible to mean the interval between).

For example, as shown in FIG. 19, a plurality of light emitting devices 120 are disposed on the first long side LS1 and the second short side SS2 of the substrate 100, respectively. Assume that the plurality of light receiving elements 130 are disposed on the second long side LS2 and the first short side SS1 of the substrate 100, respectively.

In this case, the distance D11 between two adjacent light receiving elements 130 in the second area AR2 of the second long side LS2 of the substrate 100 is located at the outer side than the second area AR2. It may be larger than the distance D10 between two adjacent light receiving elements 130 in the area AR1 and the third area AR3.

In addition, the distance D21 between two adjacent light emitting devices 120 in the second area AR2 of the first long side LS1 of the substrate 100 is located at the outer side than the second area AR2. It may be larger than the distance D20 between two adjacent light emitting devices 120 in the AR1 and the third region AR3.

Alternatively, as in the case of FIG. 20, a plurality of light receiving elements 130 are disposed on the first long side LS1, the second short side SS2, the second long side LS2, and the first short side SS1 of the substrate 100, respectively. Suppose) and a plurality of light emitting elements 120 are disposed.

In this case, the distance D31 between the light emitting device 120 and the light receiving device 130 adjacent to each other in the second area AR2 of the substrate 100 is located at the outer side of the first area AR1 than the second area AR2. ) And in the third region AR3 may be greater than the distance D30 between the adjacent light emitting device 120 and the light receiving device 130.

Alternatively, the distance between two adjacent optical elements 200 may gradually decrease toward the outer side of the substrate 100.

For example, as shown in FIG. 21, the distance between two light receiving elements 130 adjacent to each other toward the outer side from the second long side LS2 of the substrate 100 is D40, D41, D42, D43, D44, and D45. It is possible to decrease gradually in order.

In the above embodiment, the regions AR1, AR2, and AR3 that virtually partition the long sides LS1 and LS2 of the substrate 100 have been described. However, this method may be applied to the short sides SS1 and SS2 of the substrate 100. It is possible to apply the same. That is, in the first short side SS2 of the substrate 100, the distance between two adjacent light receiving elements 130 may gradually decrease in the order of D50, D51, D52, and D53.

In addition, while the above-described method of dividing a predetermined side of the substrate 100, for example, long sides LS1 and LS2 into three regions, and setting an interval between adjacent optical elements 200 in each region, It is also possible to divide a predetermined side of the substrate 100 into four or more regions, and set different distances between adjacent optical elements 200 in each divided region.

In the present invention, the distance between each optical element 200 is gradually reduced from the center of each side (LS1, LS2, SS1, SS2) of the substrate 100 toward the outer side, but approximately three located at the outermost side of each side The interval between the optical elements 200 may be a half interval between the intervals between the optical elements 200 positioned at or close to the center of the substrate 100 or an average interval of the optical elements 200 positioned in the central area AR1. It is desirable to be installed at intervals of 1/2 or less.

As described above, decreasing the distance between two adjacent optical elements 200 toward the outer side of the substrate 100 may reduce the size of the dead zone at the corner portion of the substrate 100.

For example, as shown in FIG. 22A, when the distance between two adjacent optical elements 200 is substantially the same regardless of the position of the substrate 100, the dead zone ( DZ) may occur.

On the other hand, as shown in FIG. 22B, when the distance between two adjacent optical elements 200 decreases toward the outside of the substrate 100, the size of the dead zone may decrease.

Referring to FIG. 23, as shown in (A), the light emitting device 120 may include a light emitting surface 2300 for emitting light. In the light emitting surface 2300, as shown in (B), predetermined light may be emitted at a predetermined emission angle.

The direction in which the light emitting surface 2300 of the light emitting device 120 faces may be referred to as the light emitting direction of the light emitting device 120.

In addition, as in the case of FIG. 24, when the light emitting device 120 emits light at an emission angle of θ30, the light emitting direction of the light emitting device 120 is the center of the light emitting range of the light emitting device 120, that is, The angle of θ 30/2 from both ends of the light emission range may be referred to as the light emission direction of the light emitting device 120. In FIG. 24, the light divergence direction of the light emitting device 120 is represented as DR.

At least one light emitting direction of the plurality of light emitting devices 120 may be different from at least one light emitting direction of the others. In other words, a direction of at least one light emitting surface 2300 of the plurality of light emitting devices 120 may be different from a direction of at least one of the light emitting surfaces 2300.

For example, as in the case of FIG. 25A, the light emission directions DR1 and DR2 of the first light emitting device 120a and the second light emitting device 120b of the plurality of light emitting devices 120 may be used. That is, the direction that the light emitting surface 2300 faces may be substantially the same. On the other hand, the light emitting direction DR3 of the third light emitting device 120c of the plurality of light emitting devices 120 may be different from the light emitting direction of the first light emitting device 120a and the second light emitting device 120b. have.

Referring to FIG. 25B, the direction DR2 facing the light emitting surface 2300 of the second light emitting device 120b and the direction DR3 facing the light emitting surface 2300 of the third light emitting device 120c are different from each other. An example of another case is disclosed.

As such, when the light emitting direction of the two light emitting devices 120 selected from the plurality of light emitting devices 120, that is, the direction in which the light emitting surface 2300 is directed, is different from each other, the size of the dead zone can be reduced, and the light emitting device ( It is possible to increase the efficiency of the light emitted by 120.

For example, as in the case of FIG. 26, a third light emitting device disposed relatively outside of the substrate 100 among the first light emitting device 120a, the second light emitting device 120b, and the third light emitting device 120c. When inclined toward the center of the substrate 100 relatively in the light divergence direction of 120c, the light emitted by the third light emitting device 120c can be sufficiently used, thereby improving the light efficiency.

In addition, in order to improve the light efficiency, it may be preferable to adjust the direction of the light emitting surface 2300 of the light emitting device 120 disposed on the outer side of the substrate 100 to face the center area of the substrate 100.

For example, as shown in FIG. 27, a straight line perpendicular to a predetermined side of the substrate 100 while passing through the center of the substrate 100, that is, the right side of the center line CL based on the center line CL. Assume that the first, second, third, and fourth light emitting devices 120a to 120d are disposed on the substrate. In more detail, the first light emitting device 120a is disposed closer to the center of the substrate 100 than the second light emitting device 120b. In other words, the first light emitting device 120a is disposed closer to the center line CL of the substrate 100 than the second light emitting device 120b. In addition, the second light emitting device 120b may be disposed closer to the center of the substrate 100 than the third light emitting device 120c.

In this case, the angle θ 31 between the direction DR1 facing the light emitting surface 2300 of the first light emitting device 120a and the direction DR3 facing the light emitting surface 2300 of the third light emitting device 120c is set to the first angle. It may be greater than an angle θ32 between a direction DR1 of the first light emitting device 120a facing the light emitting surface 2300 and a direction DR2 of the second light emitting device 120b facing the light emitting surface 2300. That is, the light emission direction of the third light emitting device 120c is inclined toward the center line CL of the substrate 100 compared to the first and second light emitting devices 120a and 120b.

Here, the angle θ32 between the direction DR1 facing the light emitting surface 2300 of the first light emitting device 120a and the direction DR2 facing the light emitting surface 2300 of the second light emitting device 120b is substantially equal. It may be 0 ms. That is, the direction DR1 facing the light emitting surface 2300 of the first light emitting device 120a and the direction DR2 facing the light emitting surface 2300 of the second light emitting device 120b may be substantially parallel to each other. In this case, the angle θ 31 between the direction DR1 facing the light emitting surface 2300 of the first light emitting device 120a and the direction DR3 facing the light emitting surface 2300 of the third light emitting device 120c is set to the first angle. 3 may be substantially equal to the angle θ31 between the direction DR3 facing the light emitting surface 2300 of the light emitting device 120c and the direction DR2 facing the light emitting surface 2300 of the second light emitting device 120b. have.

Alternatively, as shown in FIG. 28, the distance between the center line CL and the light emitting direction of the light emitting device 120 increases as it moves away from the center line CL with respect to the center line CL passing through the center of the substrate 100. It is also possible for the angle of to gradually increase. Referring to FIG. 28, the angle θ35 between the direction DR2 facing the light emitting surface 2300 of the second light emitting device 120b and the center line CL is determined by the light emitting surface 2300 of the first light emitting device 120a. It may be greater than an angle 0 ㅀ between the direction DR1 and the center line CL. The angle θ33 between the direction DR3 of the third light emitting device 120c facing the light emitting surface 2300 and the center line CL is the direction DR2 of the second light emitting device 120b facing the light emitting surface 2300 facing the light emitting surface 2300. It may be larger than the angle θ35 between and the centerline CL. In addition, the angle θ34 between the direction DR4 and the center line CL of the fourth light emitting device 120d is directed toward the light emitting surface 2300 of the third light emitting device 120c. It may be greater than the angle θ 33 between DR3) and the centerline CL.

On the other hand, the direction in which the light emitting surface 2300 of the light emitting element located at the outermost side of the substrate 100 is preferably rotated by approximately 1 (°) or more toward the center of the substrate.

In addition, in the above description, the light emitting device 120 installed on the second short side SS2 described above using the light emitting device 120 positioned on the first long side LS1 is preferably installed in the same manner. In addition, it is preferable that the light receiving elements 130 corresponding to the light emitting element 120 are also installed symmetrically on the light emitting element.

Meanwhile, at least one optical device 200 may be disposed at a corner portion of the substrate 100. For example, as shown by a dotted line in FIG. 29, the light emitting device 120 may be disposed at at least one corner of the substrate 100, and the light receiving device 130 may be disposed at the remaining corners.

In this case, the size of the dead zone can be further reduced at the corner portion of the substrate 100.

In addition, in order to further reduce the size of the dead zone at the corner portion of the substrate 100, at least one optical device 200 at the corner portion of the substrate 100, as in the case of FIG. While arranging, it is possible to reduce the distance between two adjacent optical elements 200 toward the outside of the substrate 100.

31A to 37 are diagrams for describing a display apparatus including a touch panel according to the present invention. In the following description will be omitted for the parts described in detail above. Hereinafter, various types of display panels 1800 may be applied, such as a plasma display panel (PDP) and a liquid crystal display panel (LCD).

Referring to FIG. 31A, a substrate 100 may be disposed on a front surface of the display panel 1801, and a plurality of light emitting devices 120 and a light receiving device 130 may be disposed on an edge of the substrate 100. That is, the substrate 100 on which the light emitting device 120 and the light receiving device 130 are disposed is disposed on the front surface of the display panel 1801.

The position where the plurality of light emitting devices 120 and the light receiving devices 130 are disposed may correspond to an outer area of an active area 1800 in which an image of the display panel 1801 is displayed.

In this case, the protective cover 1820 disposed on the outside of the light emitting device 120 and the light receiving device 130 may be installed in a form of wrapping the side surfaces of the substrate 100 and the display panel 1801 together, and a protective cover. 1820 may also be used as a fixing means for fixing the substrate 100 and the display panel 1801.

Alternatively, as illustrated in FIG. 31B, the substrate 100 may be omitted, and the plurality of light emitting devices 120 and the plurality of light receiving devices 130 may be disposed at the edge of the display panel 1801.

Preferably, the light emitting device 120 and the light receiving device 130 may be disposed in a dummy area 1810 outside of an active area 1800 in which an image of the display panel 1801 is displayed. For example, as illustrated in FIG. 31B, the light emitting device 120 and the light receiving device 130 may be disposed in the dummy area 1810 outside the active area 1800 of the display panel 1800. Although 1810 is described as a dummy area, 1810 may be referred to as a bezel area of a display panel.

In this case, it may be said that the display panel 1801 replaces the substrate 100.

Since the configuration of the touch panel applied to the display device is substantially the same as that described in detail with reference to FIGS. 1 to 30, a detailed description thereof will be omitted.

In the display device according to FIGS. 31A to 31B, the light receiving device 130 may be disposed later than the light emitting device 120 as shown in FIG. 17. To this end, as shown in FIG. 32, the shortest distance D20 between the end of the display panel 1801, that is, the end of the dummy region 1810 and the light receiving device 130, is formed between the end of the display panel 1801 and the light emitting device 120. It is possible to make it smaller than the shortest interval D10.

As such, it is possible to arrange a PCB substrate (not shown) in the protective cover 1820 to place the light receiving element 130 further from the center of the display panel 1801. As such, when the PCB substrate is disposed on the protective cover 1820 disposed on the side surface of the display panel 1801, the light receiving element 130 may be substantially disposed at the end of the display panel 1801.

Here, the PCB substrate may be a flexible substrate, such as a flexible PCB substrate. In addition, the PCB substrate may connect a controller (not shown), the light receiving element 130, and the light emitting element 120.

Alternatively, as shown in FIG. 33, the optical devices 200 disposed in the dummy area 1810 of the display panel 1801 may be disposed close to the end of the dummy area 1810. For example, as in the case of FIG. 33B, the distance G1 from the end of the dummy region 1810 to the optical device 200 is the distance from the optical device 200 to the effective area AA ( May be less than G2). Here, the optical device 200 may be at least one of the light emitting device 120 and the light receiving device 130.

In this case, it is possible to further reduce the size of the dead zone.

Alternatively, while the light emitting device 120 and the light receiving device 130 disposed in the dummy area 1810 of the display panel 1801 are disposed close to the ends of the dummy area 1810, the light emitting device 120 may include the light receiving device ( It may be closer to the end of the dummy region 1810 as compared to 130. For example, as in the case of FIG. 34, the distance G10 from the end of the dummy region 1810 to the light emitting element 120 is smaller than the distance G11 from the light emitting element 120 to the effective area AA. The distance G20 from the end of the dummy region 1810 to the light receiving element 130 may be smaller than the distance G21 from the light receiving element 130 to the effective area AA. Here, the distance G10 from the end of the dummy region 1810 to the light emitting device 120 may be smaller than the distance G20 from the end of the dummy region 1810 to the light receiving element 130. In this case, since the light emitted by the light emitting device 120 can be spread more widely, it is possible to improve the light efficiency of the light emitting device 120, while reducing the size of the dead zone in an area adjacent to the light emitting device 120. It is possible.

As such, the optical devices 200 disposed in the dummy area 1810 of the display panel 1801 may be disposed adjacent to the ends of the dummy area 1810. The interval between the 200 may be smaller toward the outside of the display panel 1810. For example, in the twelfth area AR12 of the first long side LS1 of the display panel 1801, the distance D110 between two adjacent light emitting devices 120 is located outside the twelfth area AR12. It may be larger than the distance D100 between two adjacent light emitting devices 120 in the eleventh region AR11 and the thirteenth region AR13.

In this case, the closer the corner portion 3500 of the dummy region 1810, the smaller the spacing between two adjacent optical elements 200. In other words, the number of the optical elements 200 per unit distance in the first portions AR11 and AR13 adjacent to the corner portion 3500 of the dummy region 1810 is lower than the first portions AR11 and AR13. It may also be viewed as more than the number of optical elements 200 per unit distance in the second portion AR12 far from 3500.

Since a method of reducing the distance between two adjacent optical elements 200 toward the outside of the display panel 1810 may be sufficiently inferred from the details described above with reference to FIGS. 18 to 22, further description thereof will be omitted.

Alternatively, as shown in FIG. 36, at least one optical device 200 may be disposed at a corner portion of the dummy region 1810. In FIG. 36, the optical devices 200 disposed at the corners of the dummy region 1810 are denoted by H1 to H4.

Here, the optical devices 200 disposed at the corners of the dummy region 1810 are parallel to the short sides SS1 and SS2 of the effective region 1800 and the parallel to the long sides LS1 and LS2 of the effective region 1800. As a result, the effective area 1800 may not overlap. In detail, as in the case of FIG. 36, the optical devices 200 disposed at the corners of the dummy region 1810 may be formed at the effective region 1800 of the extension line EL10 of the short sides SS1 and SS2 of the effective region 1800. It may not meet the extension lines EL11 of the long sides LS1 and LS2.

In addition, the optical device 200 disposed at the corner portion of the dummy area 1810 may be disposed closer to the effective area 1800 than other optical devices 200. Here, the optical device 200 disposed at the corner portion of the dummy region 1810 has been described in detail with reference to FIG. 36.

For example, as shown in FIG. 37, the gap G42 between the optical device 3720 and the effective area 1800 disposed at the corner portion of the dummy region 1810 may be different from that of other optical devices 3700 and 3710. It may be smaller than the gaps G31 and G51 between the effective areas 1800.

In addition, the gaps G40 and G41 between the optical elements 3720 and the ends of the dummy regions 1810 disposed at the edges of the dummy region 1810 may be different from the other optical elements 3700 and 3710 and the dummy region 1810. It may be greater than the interval (G30, G50) between the ends of the. In detail, the distance G40 between the optical device 3720 disposed at the corner portion of the dummy region 1810 and the second short side SS2 of the dummy region 1810 is in the long side LS direction of the dummy region 1810. For example, the distance between the optical device 3700 overlapping the effective area 1800 and the second short side SS2 of the dummy area 1810 may be greater than the distance G30. In addition, the distance G41 between the optical device 3720 disposed at the corner portion of the dummy region 1810 and the first long side LS1 of the dummy region 1810 is in the short side SS direction of the dummy region 1810. It may be larger than the distance G50 between the optical device 3710 overlapping the effective area 1800 and the first short side LS1 of the dummy area 1810.

In addition, G31 and G51 are different, and G30 and G50 may be different.

38 to 42 are views for explaining a method of driving a touch panel according to the present invention in detail.

Referring to FIG. 38, in the method of driving a touch panel according to the present invention, a plurality of light emitting devices X10 to X40 are turned on one by one to emit beams S21, and a plurality of light receiving devices Z1 to Z4. By turning on the light beams emitted by the light emitting devices X10 to X40 may be received (S22).

Subsequently, the sensing data according to the positions of the light emitting elements X10 to X40 that emit the beams and the light receiving data of the plurality of light receiving elements Z1 to Z4 that are turned on in correspondence to the respective light emitting elements are converted into mathematical conversion methods, respectively. A center point of the sensed data may be obtained (S23).

Thereafter, the touch position may be calculated by inversely converting the data for the center point.

Here, the sensing data includes data on the position of the light emitting element that is turned on and the position of the light receiving element that does not detect light of the light emitting element among the plurality of light receiving elements that are turned on in correspondence to the light emitting element being turned on. For example, when the first light emitting device X10 is turned on as shown in FIG. 39A, the first light receiving device Z1 receives a beam emitted by the first light emitting device X10 by an input means located at a P point. can not do. Accordingly, the sensed data includes rectangular coordinate data corresponding to (X10, Z1). In this manner, in the case of FIG. 39A, the sensed data includes rectangular coordinate data corresponding to (X10, Z1), (X20, Z2), (X30, Z3), and (X40, Z4).

Here, when the plurality of light receiving elements Z1 to Z4 receive the beam, when each of the light emitting elements X10 to X40 is turned on as described above, the plurality of light receiving elements are turned on, and the other light receiving elements are turned off. Method can be used. Since it has been described in detail above, redundant descriptions are omitted.

Meanwhile, in the touch panel according to the present invention, a driving signal in which at least one of a frequency and an amplitude is adjusted in order to prevent a malfunction of the light receiving elements Z1 to Z4 due to light incident from the outside or light emitted from the display panel is prevented. Can be used.

For example, as shown in FIG. 39B, the fourth light emitting device X40 among the plurality of light emitting devices X10 to X40 may be turned on by the plurality of driving signals DS during the fourth period D4. In detail, the fourth light emitting element X40 is turned on to emit a beam while the driving signal DS is supplied in the fourth period D4, and is turned off to emit a beam in the period between the two driving signals DS. You can't. That is, the light emission period of the fourth light emitting element X40 is TP, and the unit light emission period is TH.

In this case, the light receiving elements Z1 to Z4 sample at the sampling rate according to the light emission period TP and the light emission period TH of the fourth light emitting element X40, and the light emitting period of the fourth light emitting element X40 is sampled. When the light corresponding to the pattern of the TP and the light emission period TH is received, light reception can be recognized. In detail, when the light emission period TP of the fourth light emitting device X40 is 2ms and the light emitting period TH is 1ms, the light receiving elements Z1 to Z4 receive light that is received for 1ms at a period of 2ms. The light emitted by (X40) can be recognized, and the remaining light can be ignored. For example, when an external observer illuminates the flashlights toward the plurality of light receiving elements Z1 to Z4 for 10 seconds, the light receiving elements Z1 to Z4 may recognize the flashlight light as external noise. will be. As a result, it is possible to reduce the influence of external light and reduce the occurrence of malfunction.

Here, a method of operating one light emitting device using the fourth driving signal DS is described, but the number of driving signals DS for driving one light emitting device may be variously changed.

In addition, a method of adjusting the pulse width of the driving signal DS may be possible.

Alternatively, a sinusoidal drive signal may be used instead of the square wave.

Looking at the method of calculating the touch position in more detail as follows.

First, a plurality of sensing data (X10, Z1), including position data of the light emitting elements X10 to X40 and the light receiving elements Z1 to Z4 turned on in the same manner as in FIGS. 39A to 39B, ( X20, Z2), (X30, Z3), and (X40, Z4)) may be obtained.

Each sensory data can then be mapped to a Cartesian coordinate system. In this case, as illustrated in FIG. 40, the sensing data of the second light emitting device X20 and the second light receiving device Z2 may be mapped in the form of F2, and the fourth light emitting device X40 and the fourth light receiving device ( Sensing data for Z4) may be mapped in a form such as F1.

Thereafter, the mapped sensed data may be transformed using a mathematical transformation method to obtain a center point of each sensed data. Let this transformation be the first transformation.

Subsequently, the first transformed sensed data may be grouped to associate a plurality of mapped sensed data corresponding to the same location, and data about the center point W1 of the mapped sensed data may be obtained as shown in FIG. 41. Here, the reason for grouping is that a plurality of sensing data corresponding to an arbitrary position P is ((X10, Z1), (X20, Z2), (X30, Z3), (X40, Z4)) as shown in FIG. 39A. This is because it is necessary to correlate the sensed data according to an arbitrary position P with each other.

In the center point acquiring step, the number of touches may be acquired through the center point W1. For example, the range of the touch can be obtained as the size of the predetermined area W2 centered on the center point W1.

Alternatively, a method of acquiring data for the region W2 of FIG. 41 after first converting the mapped sensed data and obtaining a center point W1 for the region W2 may be possible.

Thereafter, the data about the center point W1 may be transformed into a second transform which is an inverse transform of the first transform. Then, the plurality of conversion sensing data including position data of the light emitting elements X10 to X40 and the light receiving elements Z1 to Z4 that are turned on again may be obtained.

In this case, the conversion detection data may have a substantially straight line shape. The conversion detection data obtained by inverting the data of the center point W1 of FIG.

For example, in FIG. 40, since the sensing data is mapped to the Cartesian coordinate system, the sensing data may be in the form of predetermined regions F1 and F2. However, the center point W1 of each sensing data as shown in FIG. Since the data is obtained by inverse transformation, the transform detection data in the form of straight lines SL1 and SL2 can be obtained as shown in FIG. 42. Here, it can be seen that the F1 region of FIG. 40 is converted to the linear form of SL1 of FIG. 42, and the F2 region of FIG. 40 is converted to the linear form of SL2 of FIG. 42.

Thereafter, as illustrated in FIG. 42, the touch position may be acquired by acquiring the intersection point P (i, j) of the conversion sensing data.

43 to 46 are diagrams for describing a functional block of a display device including a touch panel according to the present invention. Hereinafter, a description of the parts described above in detail will be omitted.

Referring to FIG. 43, the display apparatus according to the present invention may include a touch panel 2510 including a plurality of light emitting elements and a light receiving element, and a touch panel unit 2500 and a display unit 2530 including a controller 2520. It may include.

The display unit 2530 may be at least one of a display panel such as a PC, an embedded system, a PDP, and an LCD.

The controller 2520 may control operations of the light emitting device and the light receiving device of the touch panel 2510.

As illustrated in FIG. 44, the controller 2520 of the touch panel unit 2500 may include a controller 2521, a data collector 2522, an operator 2523, and a first communication unit 2524.

In addition, the display unit 2530 may include a second communication unit 2531 and an application program unit 2532.

The controller 2521 may control the plurality of light emitting devices and the light receiving devices of the touch panel 2510. For example, the controller 2521 may turn on the plurality of light emitting devices according to a predetermined timing and turn on at least one light receiving device according to the on of any light emitting device. Operations of the plurality of light emitting devices and the light receiving devices have been described in detail above.

The data collector 2522 may collect optical data acquired by the plurality of light emitting devices and the light receiving devices operated under the control of the controller 2521. Here, the optical data may mean sensing data.

The calculator 2523 may calculate and calculate a touch position based on the optical data collected by the data collector 2522. The method of calculating the touch position has been described in detail above.

The first communicator 2524 may transmit information about the touch position calculated by the calculator 2523 to the second communicator 2530 of the display 2530.

The display unit 2530 may display information about the received touch location on the screen, store information about the touch location, or apply information about the touch location to the application program unit 2532 using an application program. have.

Alternatively, as illustrated in FIG. 45, the operation unit may be omitted from the controller 2520, and the operation unit 2533 may be disposed on the display unit 2530. In this case, the first communication unit 2524 transmits the optical data collected by the data collection unit 2522 to the second communication unit 2531 of the display unit 2530, and the calculation unit 2533 is the second communication unit 2531. The touch position may be calculated based on the received optical data.

Alternatively, as illustrated in FIG. 46, the operation unit and the data collection unit may be omitted from the controller 2520, and the operation unit 2533 and the data collection unit 2534 may be disposed on the display unit 2530. In this case, the first communication unit 2524 separately transmits the optical data acquired by each light emitting element and the light receiving element operated under the control of the control unit 2521 to the second communication unit 2253 of the display unit 2530. Can transmit

Then, the data collector 2534 of the display unit 2530 collects the optical data received through the second communication unit 2253, and the calculation unit 2533 is based on the optical data collected by the data collector 2534. The touch position may be calculated and calculated.

Another driving method of the touch panel according to the present invention will be described in detail below.

47 to 68 are views for explaining another driving method of the touch panel according to the present invention. Hereinafter, the description of the parts described in detail above will be omitted. For example, the following driving method may be applied to the touch panel described above in detail. In addition, hereinafter, the driving method of the touch panel will be described as an example. However, the driving method of the display device including the light emitting device 120 and the light receiving device 130 may be applied. In addition, the calculation of the touch position may be performed by the calculation units 2523 and 2533 described above with reference to FIGS. 44 to 46. In addition, since the method of calculating the touch position has been described in detail above, the method of calculating the touch position will not be described below.

First, as shown in FIG. 47A, a plurality of light emitting devices EH1 to EH6 are disposed on the first long side LS1 of the substrate 100, and on the second short side SS2 of the substrate 100. Assume that a plurality of light emitting elements EV1 to EV4 are disposed, and a plurality of light receiving elements 130 are disposed on the second long side LS2 side and the first short side SS1 side of the substrate 100. Here, the plurality of light emitting elements EH1 to EH6 disposed on the first long side LS1 side of the substrate 100 are referred to as horizontal light emitting elements, and the plurality of light emitting elements EH1 to EH6 disposed on the second short side SS2 side of the substrate 100 are referred to as horizontal light emitting elements. The light emitting devices EV1 to EV4 may be referred to as vertical light emitting devices.

The plurality of light emitting devices EH1 to EH6 and EV1 to EV4 may be turned on during each frame period F1 to F5. In addition, the at least one light receiving element 130 may be activated to correspond to the light emitting element being turned on. The frame periods F1 to F5 may be divided by the vertical synchronization signal Vsync. In addition, the vertical synchronization signal Vsync may be the same as the vertical synchronization signal corresponding to the image data displayed on the display panel, or may be another vertical synchronization signal for touch. For convenience of driving and for ease of driving, the vertical synchronization signal Vsync used for the touch may be the same as the vertical synchronization signal corresponding to the image data. In this case, the frame of the image data may be the same as the frame period for the touch.

Alternatively, one frame period may be described as a period in which the plurality of light emitting devices EH1 to EH6 and EV1 to EV4 are once turned on each time.

For example, as shown in FIG. 47B, the driving signal DS is sequentially supplied to the horizontal light emitting devices EH1 to EH6 during the second frame F2 of the plurality of frames, and then the vertical light emitting device ( The driving signal DS may be sequentially supplied to the EV1 to EV4. Accordingly, the plurality of light emitting devices EH1 to EH6 and EV1 to EV4 may be sequentially turned on. Here, the shape of the driving signal DS is not limited to FIG. 47.

As described above, in each frame period F1 to F5, the plurality of light emitting devices EH1 to EH6 and EV1 to EV4 are turned on, and correspondingly, the light receiving elements 130 are activated to scan whether a touch occurs. )can do. In consideration of this, one frame period may be a period in which the plurality of light emitting devices EH1 to EH6 and EV1 to EV4 are turned on at least once.

Alternatively, as in the case of FIG. 48, it is possible to divide one frame period F2 into a horizontal frame period HF and a vertical frame period VF. Here, the horizontal frame period HF is a period for turning on a plurality of light emitting elements arranged in the horizontal direction, that is, the horizontal light emitting elements EH1 to EH6, and the vertical frame period VF is a plurality of arranged in the vertical direction. It can be said that the light emitting elements of the light emitting devices, i.e., the vertical light emitting devices EV1 to EV4 are turned on.

On the other hand, when a touch occurs within a predetermined frame period, the sensed data about the touch position corresponding to the touched frame period may be ignored. Here, the sensing data has been described above.

For example, as in the case of Figure 49, the touch from the second frame period (F2) during the time that the touch occurs when a touch occurs on T _A the time (T _A) of the plurality of frame period (F1 ~ F5) It is possible to ignore the sensing data generated in at least one frame period of the frame period corresponding to the touch period TPD until the end point.

Preferably, the sensing data generated in the first frame period, that is, the second frame period F2, of the frame period corresponding to the touch period TPD from the time point T _A at which the touch occurs to the time point at which the touch ends. It is possible to ignore. In other words, the touch position is calculated using the sensing data generated from the next frame period, that is, the third frame period F3, without considering the sensing data generated in the second frame period F2 in the process of calculating the touch position. To calculate and output the location.

As described above, the reason for ignoring the sensed data generated in the first frame period of the frame period corresponding to the touch period TPD from the time point T _A at which the touch occurs to the time point when the touch ends when the touch position is calculated is explained. Looking at it as follows.

As in the case of FIG. 50, assume that a touch occurs after the driving signal DS is supplied to the first vertical light emitting device EV1 in the vertical frame period VF of the second frame period F2. . That is, the time point T _A at which the touch occurs is between the time point at which the driving signal DS is supplied to the first vertical light emitting device EV1 and the time point at which the driving signal DS is supplied to the second vertical light emitting device EV2. It is located in

In this case, the sensing data generated in the second frame period F2 may depend on the second to fourth vertical light emitting devices EV2 to EV4 as in the case of FIG. 51. In detail, when an object 5100 such as a finger generates a touch at a predetermined position on the display panel, the second to fourth vertical light emitting devices EV2 to EV4 emit light in the second frame period F2. Only the light receiving element 130 can be activated. For this reason, it may be difficult to accurately calculate the touch position with the sensing data regarding the touch position occurring during the second frame period F2. Accordingly, in the present invention, the sensing data for the touch position occurring during the second frame period F2 is ignored.

Thereafter, the touched position information may be output by using the sensed data of the remaining frame periods except the frame period corresponding to the ignored sense data among the frame periods corresponding to the touch period TPD. A method of calculating and outputting a touch position using the sensed data has been described above with reference to FIGS. 38 to 42.

If the touch point T _A is located before the first light emitting device is turned on in a predetermined frame period, the touch position is not ignored, without detecting the sensed data regarding the touch position occurring in the corresponding frame period. It is possible to use to calculate.

For example, as in the case of FIG. 52, the time point T _A at which the touch occurs is located within the second frame period F2, but the first light emitting device, that is, the first horizontal light emitting device, in the second frame period F2. When a touch occurs before the driving signal DS is supplied to the EH1, the sensing data about the touch occurring in the second frame period F2 may include information about a precise touch position. Accordingly, in the case of FIG. 52, it may be desirable not to ignore the sensed data regarding the touch position occurring in the second frame period F2. Although the driving signal DS is sequentially supplied from the first horizontal light emitting device EH1 in one frame period, the order in which the driving signal DS is supplied is not limited thereto.

For example, as in the case of Figure 53, that the touch is started when the (5400), that is, if a touch is generated, the beginning point (T _A) of the touch is a touch point (T _A) from a touch termination occurred In the first frame period of the frame period corresponding to the touch period TPD to the viewpoint, it may be determined whether the first light emitting device is turned on before it is determined 5510. In other words, it is determined whether the start time T _A of the touch corresponds to the first light emitting element in the first frame period of the frame period corresponding to the touch period TPD.

As a result of the determination, when the start time T _A of the touch is before the first light emitting device is turned on in the first frame period of the frame period corresponding to the touch period TPD, the detection occurring in the first frame period It is possible to include 5420 in the sense data for calculating the touch position. That is, the sensing data generated in the first frame period is used to calculate the touch position.

On the other hand, if it is determined in step 5410 that the start time T _A of the touch is after the first light emitting device is turned on in the first frame period of the frame period corresponding to the touch period TPD, the first frame period It is possible to ignore 5430 the sensed data occurring at.

Thereafter, the touch position may be calculated using the sensed data (5440), and data about the touch position may be output (5450) according to the calculation result.

Alternatively, as in the case of FIG. 54, when the touch ends at the point T _B during the fifteenth frame period F15 of the plurality of frame periods F11 to F15, the point at which the touch ends from the point at which the touch occurs (T _B) It is possible to disregard the sensed data occurring in the last frame period, that is, the fifteenth frame period F15, among the frame periods corresponding to the touch period TPD up to.

As described above, the reason for ignoring the sensing data generated in the last frame period among the frame periods corresponding to the touch period TPD from the time when the touch is generated to the time when the touch is terminated T _{B is} calculated. It may be approximately the same as the reason for ignoring the sensed data occurring in the frame period.

If the time point at which the touch ends (T _B ) is located after the last light emitting device is turned off in a predetermined frame period, the touch position is not ignored, without ignoring the sensed data regarding the touch position occurring in the corresponding frame period. It is possible to use to calculate.

For example, as in the case of FIG. 55, the time point T _B at which the touch ends is located within the fourteenth frame period F14, but the last light emitting device, that is, the fourth vertical light emitting device in the fourteenth frame period F14. When a touch occurs after the driving signal DS is supplied to the EV4, the sensing data about the touch occurring in the fourteenth frame period F14 may include information about a precise touch position. Accordingly, in the case of FIG. 55, it may be desirable not to ignore the sensed data regarding the touch position occurring in the fourteenth frame period F14.

Alternatively, all of the sensing data occurring in the first frame period and the last frame period of the frame period corresponding to the touch period TPD from the time point T _A at which the touch occurs to the time point T _B at which the touch ends are ignored. The case is possible.

For example, as in the case of FIG. 56, when the touch starts at the time T _A and the touch ends at the time T _B during the second frame period F2 among the plurality of frame periods F1 to F5, the touch is performed. The first frame period, i.e., the second frame period F2 and the last frame period, i.e., the fifth frame period corresponding to the touch period TPD from the time point T _A to the time point T _B at which the touch ends. It is possible to ignore the sensed data occurring in the frame period F5.

In this case, the touch position may be calculated and output using the sensing data generated in the third frame period F3 and the fourth frame period F4.

For example, as shown in FIG. 57, when the touch ends 5700, the last light emitting device is turned on in the last frame period of the frame period in which the end point T _B of the touch corresponds to the touch period TPD. It may be determined whether it is after being turned off (5710). In other words, it is determined whether the end point T _B of the touch corresponds to the last light emitting element in the last frame period of the frame period corresponding to the touch period TPD.

As a result of determination, when the end point T _B of the touch is after the last light emitting device is turned off in the last frame period of the frame period corresponding to the touch period TPD, the sensing data generated in the last frame period is touched. It is possible to include 5720 in the sense data for calculating the position. That is, the sensing data generated in the last frame period is used to calculate the touch position.

On the other hand, if it is determined in step 5710 that the end time T _B of the touch is before the last light emitting device is turned off in the last frame period of the frame period corresponding to the touch period TPD, it occurs in the last frame period. It is possible to ignore 5730 the sensed data.

Thereafter, the touch position may be calculated 5940 using the sensed data, and data about the touch position may be output 5750 according to the calculation result.

If a time point T _A at which a touch occurs and a time point T _B at which the touch ends are located within one frame period or within two consecutive frame periods, it is possible not to output information of the touched position. .

For example, as illustrated in FIG. 58A, a time point T _A at which a touch occurs is located within the second frame period F2 among the plurality of frame periods F1 to F5, and a time point T _B at which the touch ends. In the case of being located within the third frame period F3 subsequent to the second frame period F2, all of the sensed data generated in the second frame period F2 and the third frame period F3 can be ignored. In this case, although a touch occurs in a part of the second frame period F2 and a part of the third frame period F3, the second frame period F2 and the second frame period F2 may be used to prevent a malfunction due to insufficient data on the touch position. It may be desirable to ignore all the sensed data occurring in the third frame period F3.

Alternatively, as in the case of FIG. 58B, even when the touch point T _A and the point where the touch ends T _B are located within the second frame period F2, the data regarding the touch position is not included. It may be desirable to ignore the sensed data occurring in the second frame period F2 in order to prevent malfunction due to lack.

Alternatively, the virtual frame may be set and used to more accurately calculate the touch position.

For example, as in the case of FIG. 59, when the touch point T _A is located within the second frame period F2, the virtual frame period FF is set from the point T _A at which the touch occurs. Can be. Here, the length of the virtual frame period FF may be approximately equal to the length of one frame period.

For example, as shown in FIG. 60, after the driving signal is supplied to the third horizontal light emitting device EH3 during the second frame period F2, the driving signal DS is applied to the fourth horizontal light emitting device EH4. In the case where a touch occurs at the time T _A before being supplied, from the time T _A to the next frame, that is, before the driving signal DS is supplied to the fourth horizontal light emitting device EH4 in the third frame period F3. The period of can be newly set to the virtual frame FF.

Here, the virtual frame period FF may overlap the second frame period F2 and may also overlap the third frame period F3 for a predetermined period OLP. That is, the virtual frame period FF partially overlaps the second frame period F2 and the third frame period F3.

In addition, the touch position may be calculated by using the sensed data generated in the newly set virtual frame FF.

Since the touch point T _A is located within the second frame period F2, the sensing data generated in the second frame period F2 is not complete, but the second frame period F2 and the third frame period ( Since the sensed data generated in the virtual frame period FF including a part of F3) is complete enough to accurately calculate the touch position, the sensed data generated in the virtual frame period FF is used to calculate the touch position. It is possible to do that.

In addition, while the sensed data generated in the virtual frame period FF is used to calculate the touch position, the sensed data generated from the next frame period, that is, the third frame period F3, may be used to calculate the touch position.

That is, from the time point T _A at which the touch occurs, not only the sensing data corresponding to the newly set virtual frame period FF is used to calculate the touch position, but also the second frame period of the frame period corresponding to the touch period TPD, That is, it is possible to use the sensing data generated from the next frame period of the frame period corresponding to the time point T _A at which the touch occurs to calculate the touch position.

For example, as in the case of FIG. 61A, when the touch point T _A is located within the second frame period F2, the virtual frame period set from the point T _A when the touch occurs. The sensing data corresponding to (FF) is used to calculate the touch position, and then, as in the case of FIG. 61B, the third frame period F3, the fourth frame period F4, and the fifth frame period ( It is possible to use the sensed data corresponding to F5) to calculate the touch position.

In this case, the sensing data corresponding to the period OLP in which the virtual frame period FF and the third frame period F3 overlap may be used repeatedly. For example, in the case of FIG. 60, the sensing data acquired corresponding to the light emission of the first, second and third horizontal light emitting devices EH1 to EH3 in the third frame period F3 is used twice to calculate the touch position. will be.

Alternatively, the virtual frame period FF can be set continuously during the touch period TPD from the time point T _A at which the touch occurs to the time point T _B at which the touch ends.

For example, as in the case of FIG. 62, when the touch point T _A occurs within the first frame period F1 and when the touch point T _B ends within the fifth frame period F5. The first, second, and third virtual frame periods FF1, FF2, and FF3 may be sequentially set from a time point T _A at which a touch occurs. In addition, the touch position may be calculated using sensed data corresponding to the first, second, and third virtual frame periods FF1, FF2, and FF3. In this case, the sensing data corresponding to the first, second, third, fourth, and fifth frame periods F1 to F5 may not be used.

In addition, the sensing data corresponding to the period DF from the last virtual frame period FF3 to the time point T _B at which the touch ends may be ignored.

In addition, in the case of using the method of setting the virtual frame period FF, the length of the touch period TPD from the time point T _A at which the touch occurs to the time point T _B at which the touch ends is the length of one frame period. It is possible to calculate the touch position in the case of greater than or equal to.

For example, as in the case of FIG. 63, a time point T _A at which a touch occurs is located within the second frame period F2 among the plurality of frame periods F1 to F5, and a time point T _B at which the touch ends is set. Even when located within the third frame period F3 continuous to the two frame periods F2, the length of the touch period TPD from the time point T _A at which the touch occurs to the time point T _B at which the touch ends is It is possible to set the virtual frame period FF within the touch period TPD if it is greater than or equal to the length of one frame period. Accordingly, the time point T _A at which the touch occurs is located in the second frame period F2 among the plurality of frame periods F1 to F5, and the time point T _B at which the touch ends is continuous in the second frame period F2. The touch position can be calculated even when located within the third frame period F3.

Hereinafter, the number of light-emitting elements turned on in the touch period TPD and the other non-touch period NTPD from the time point T _A at which the touch occurs to the time point T _B at which the touch ends is different. The method will be described.

The number of light emitting devices turned on in at least one frame during the touch period from the point of touch generation to the end of the touch is greater than the number of light emitting devices turned on in at least one frame during the touchless period without touch. Many are possible.

For example, referring to FIG. 64, when the touch point T _A is located within the second frame period F2, the touch period TPD is set from the point T _A when the touch occurs, The frame period F1 may be included in the non-touch period NTPD.

In this case, the number of light emitting devices turned on in the first frame period F1 is less than the number of light emitting devices turned on in the frame period included in the touch period TPD, for example, the fifth frame period F5. Can be. That is, in a frame period during which no touch occurs, power consumption can be reduced by turning on a smaller number of light emitting devices.

In other words, at least one light emitting device may not be turned on in the first frame period F1 included in the non-touch period NTPD. For example, as in the case of FIG. 64, it is possible not to turn on even (or odd) light emitting devices among the plurality of light emitting devices.

In addition, in the fifth frame period F5 corresponding to the touch period TPD, the plurality of light emitting devices may be sequentially turned on.

Alternatively, in the two frame periods included in the non-touch period NTPD, it is possible to turn on different light emitting devices.

For example, as in the case of FIG. 65, among the light emitting devices turned on in the first frame period F1 when the first and second frame periods F1 and F2 are included in the non-touch period NTPD. At least one of the light emitting devices turned on in the second frame period F2 or at least one of the light emitting devices turned on in the second frame period F2 may not be turned on in the first frame period F1. . For example, the horizontal light emitting devices EH1 to EH6 may be turned on in the first frame period F1, and the vertical light emitting devices EV1 to EV4 may be turned on in the second frame period F2.

Alternatively, as in the case of FIG. 66, the difference TG2 of the turn-on time points between two light emitting devices that are continuously turned on during the frame period F5 corresponding to the touch period TPD is the non-touch period NTPD. It may be greater than the difference TG1 of the turn-on time between two light emitting devices that are continuously turned on during the frame period F1 corresponding to.

In other words, the difference TG2 between the supply points of the driving signals DS supplied to two light emitting elements that are continuously turned on during the frame period F5 corresponding to the touch period TPD is the non-touch period NTPD. ) May be greater than the difference TG1 between the supply time points of the driving signals DS supplied to the two light emitting devices that are continuously turned on during the frame period F1 corresponding to

On the other hand, in the case of a frame period that is commonly overlapped with the touch period TPD and the non-touch period NTPD, the number of light emitting devices turned on is the number of light emitting devices turned on in the frame period located in the touch period TPD. It may be less than the number, and may be more than the number of light emitting devices turned on in the frame period positioned in the non-touch period NTPD.

For example, as in the case of FIG. 67, when the time point T _A at which the touch occurs is located within the second frame period F2, the second frame period F2 is the touch period TPD and the non-touch period ( NTPD).

In this case, it is possible to supply the driving signal DS to the odd-numbered light emitting devices but not to the even-numbered light emitting devices until the time T _A occurs when the touch occurs in the second frame period F2. Do. In addition, the driving signal DS may be sequentially supplied to the odd-numbered light emitting device and the even-numbered light emitting device after the time point T _A in which the touch occurs in the second frame period F2.

In addition, in the first frame period F1 included in the non-touch period NTPD, as in the case of FIG. 64, the driving signal DS is not supplied to the even-numbered light emitting devices, but included in the touch period TPD. In the fifth frame period F5, it is possible to sequentially supply the driving signals DS to the plurality of light emitting devices.

In this case, the number of light emitting devices turned on in the second frame period F2 is greater than the number of light emitting devices turned on in the first frame period F1, and is turned on in the fifth frame period F5. It may be less than the number of light emitting devices.

Even in this case, the sensed data corresponding to the second frame period F2 can be ignored.

Alternatively, as in the case of FIG. 68, when the end of the touch T _B is located within the fourth frame period F4, the fourth frame period F4 is the touch period TPD and the non-touch period NTPD. ) And common overlap.

In this case, the driving signal DS may be sequentially supplied to the light emitting device until the point of time T _B is terminated in the fourth frame period F4. In addition, the driving signal DS may not be supplied to every one of the light emitting devices after the time point T _B in which the touch ends in the fourth frame period F4.

In this case, the number of light emitting devices turned on in the fourth frame period F4 is less than the number of light emitting devices turned on in the first frame period F1, and is turned on in the fifth frame period F5. It may be larger than the number of light emitting devices.

Even in this case, the sensed data corresponding to the fourth frame period F4 can be ignored.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

Claims (15)

In the driving method of a touch panel comprising at least one light emitting device for emitting light and at least one light receiving device for receiving the light emitted by the light emitting device,
An activation step of sequentially turning on the plurality of light emitting elements in a plurality of frame periods and activating the light receiving element corresponding to the light emitting elements; And
An ignoring step of ignoring sensed data occurring in at least one frame period of the frame period corresponding to the touch period from the time when the touch occurs to the time when the touch ends;
Method of driving a touch panel comprising a. The method of claim 1,
After the disregarding step, the touch panel further comprising the step of outputting the information of the touched position using the sensing data of the remaining frame period except the frame period corresponding to the ignored sensing data of the frame period corresponding to the touch period. Driving method. The method of claim 1,
And in the disregarding step, discard the sensed data occurring in at least the first frame period of the frame period corresponding to the touch period. The method of claim 1,
And in the disregarding step, discard the sensed data occurring in at least the last frame period of the frame period corresponding to the touch period. The method of claim 1,
And in the disregarding step, discard the sensed data generated in at least the first frame period and the last frame period of the frame period corresponding to the touch period. The method of claim 1,
And the frame period includes a vertical frame period for turning on the plurality of light emitting elements arranged in a vertical direction and a horizontal frame period for turning on the plurality of light emitting elements arranged in a horizontal direction. In the driving method of a touch panel comprising at least one light emitting device for emitting light and at least one light receiving device for receiving the light emitted by the light emitting device,
An activation step of sequentially turning on the plurality of light emitting elements in a plurality of frame periods and activating the light receiving element corresponding to the light emitting elements; And
Outputting information on the touched position by using the sensed data generated in the remaining frame period except for the sensed data generated in at least one frame period of the frame period corresponding to the touch period from the time of the touch to the end of the touch. Output stage;
Including,
A method of driving a touch panel that does not output information of a touched position when a touch point and a touch point end are located within one frame period or two consecutive frame periods. A display panel including an active area in which an image is displayed and a dummy area disposed outside the effective area, a plurality of light emitting devices and a plurality of light receiving devices disposed in the dummy area of the display panel. In the method of driving a display device comprising:
An activation step of sequentially turning on the plurality of light emitting elements in a plurality of frame periods and activating the light receiving element corresponding to the light emitting elements; And
Outputting information on the touched position by using the sensed data generated in the remaining frame period except for the sensed data generated in at least one frame period of the frame period corresponding to the touch period from the time of the touch to the end of the touch. Output stage;
Method of driving a display device comprising a. The method of claim 8,
A method of driving a display apparatus that does not output information of a touched position when a touch occurs and a touch ends are located within one frame period or within two consecutive frame periods. A display panel including an active area in which an image is displayed and a dummy area disposed outside the effective area, a plurality of light emitting devices and a plurality of light receiving devices disposed in the dummy area of the display panel. In the method of driving a display device comprising:
An activation step of sequentially turning on the plurality of light emitting elements in a plurality of frame periods and activating the light receiving element corresponding to the light emitting elements;
A setting step of setting a virtual frame period from a time point at which the touch occurs when a touch occurs; And
A first calculating step of calculating information of a touched position by using sensed data generated according to a touch in the virtual frame period;
Method of driving a display device comprising a. 11. The method of claim 10,
And a second calculating step of calculating the information of the touched position by using the sensed data generated according to the touch in the frame period before the setting of the virtual frame period after the calculating step. The method of claim 11,
And a method in which the virtual frame period and the frame period partially overlap each other. A display panel including an active area in which an image is displayed and a dummy area disposed outside the effective area, a plurality of light emitting devices and a plurality of light receiving devices disposed in the dummy area of the display panel. In the method of driving a display device comprising:
An activation step of turning on the plurality of light emitting elements in a plurality of frame periods and activating the light receiving element corresponding to the light emitting elements; And
The number of light emitting devices that are turned on in at least one frame during the touch period from the time when a touch occurs to the time when the touch is terminated is the number of the light emitting devices that are turned on in at least one frame during the touchless period without touch. More than a number;
Method of driving a display device comprising a. The method of claim 13,
A plurality of light emitting devices are sequentially turned on during a frame period corresponding to the touch period, and at least one light emitting device of the plurality of light emitting devices is not turned on during a frame period corresponding to the touch-free period. Method of driving the device. The method of claim 13,
The difference in turn-on time between two light emitting devices that are continuously turned on during the frame period corresponding to the touch period is between the two light emitting devices that are continuously turned on during the frame period corresponding to the touchless period. A method of driving a display device smaller than the difference in turn-on time.

Images