KR101686092B1 - TOUCH PANEL and DRIVING METHOD OF THE SAME - Google Patents

Abstract

The present invention relates to a touch panel capable of sensing two or more touching portions at the same time, and a driving method thereof, and more particularly, to a touch panel having a plurality of cells arranged in a first direction and having different sizes, A plurality of first electrodes each including a bridge connecting the first electrodes in the first direction; And a plurality of second electrodes connected in a second direction perpendicular to the first direction and each including a plurality of cells having different sizes.

Touch Panel, Multi-Touch, Ghost Error

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch panel,

The present invention relates to a touch panel and a driving method thereof, and more particularly, to a touch panel capable of sensing two or more touching portions at the same time, and a driving method thereof.

2. Description of the Related Art Generally, personal computers, portable communication devices, and other personal-purpose information processing devices constitute interfaces with users by using various input devices such as a keyboard, a mouse, and a digitizer. On the other hand, as the development of mobile communication equipments is expanded, it is difficult to improve the completeness of the product as an input device such as a keyboard and a mouse, so that it is simpler and can reduce malfunctions, . In response to such demands, a touch panel has been proposed in which a user directly touches the screen with a hand or a pen to input information.

The touch panel is simple, has few malfunctions, is easy to carry because it can input characters without any other input device, and has a merit that the user can easily recognize the usage method, and is being applied to various information processing apparatuses in recent years.

The touch panel includes a resistive type in which a metal electrode is formed on an upper plate or a lower plate in accordance with a method of detecting a touched portion to determine a touched position as a voltage gradient according to resistance in a state in which a DC voltage is applied, A capacitive type in which an equipotential is formed on a conductive film and a touched portion is sensed by sensing a position where a voltage change of the upper and lower plates due to a touch is sensed and an LC value derived by touching the conductive film is read An electro-magnetic type in which a touch portion is sensed, and the like.

1 shows a conventional touch panel.

As shown in Fig. 1, a general capacitive touch panel includes a plurality of X electrodes X1 to Xn and a plurality of Y electrodes Y1 to Ym which are perpendicularly intersected with each other. The touch panel thus configured senses the coordinates corresponding to the touched portion by utilizing the fact that the capacitive generated in the intersecting region of the X electrode and the Y electrode fluctuates by the touch. At this time, the fluctuating capacitance is detected by detecting the X electrode and the Y electrode in which the voltage level fluctuates due to the variation of the capacitance.

That is, the conventional touch panel sequentially detects the voltage level of each of the X electrodes X1 to Xn and detects at least one scan X electrode among the plurality of X electrodes X1 to Xn whose voltage level fluctuates , Sequentially detects the voltage level of each of the plurality of Y electrodes Y1 to Ym, detects at least one scan Y electrode whose voltage level has fluctuated among the plurality of Y electrodes Y1 to Ym, The coordinates detected by combining the positions of the electrodes and the positions of the at least one scan Y electrode are regarded as the coordinates of the touched portion, thereby detecting the touched portion.

For example, when the first portion A is touched, the capacitance adjacent to the first portion A changes due to the touch of the first portion A, and the X2 electrode and Y2 The voltage level of the electrode fluctuates. Accordingly, the coordinates A (2,2) derived by combining the positions where the X2 electrode detected as the scan X electrode and the Y2 electrode detected as the scan Y electrode are combined are the touch coordinates (A) corresponding to the first portion A .

1, when the first portion A and the second portion B are touched at the same time, the capacitance adjacent to the first portion A and the capacitance adjacent to the second portion B, Respectively. At this time, the voltage levels of the X2 electrode and the Y2 electrode fluctuate in accordance with the variation of the capacitance adjacent to the first portion (A), and the X6 electrode and the Y7 electrode So that the voltage level of the transistor Q2 varies. Accordingly, the X2 electrode and the X6 electrode are detected as the scan X electrode, and the Y2 electrode and the Y7 electrode are detected as the scan Y electrode. (2, 2), G1 (2, 7), and G2 (6) can be obtained by combining the X2 electrode, the X6 electrode, the Y2 electrode, and the Y7 electrode, , 2) and B (6, 7) are derived. A (2, 2) among the four coordinates is a coordinate corresponding to the first portion A, B (6, 7) is a coordinate corresponding to the second portion B, And G2 (6, 2) are coordinates that do not correspond to the first portion A or the second portion B, respectively. In this way, when the positions where the plurality of scan X electrodes and the plurality of scan Y electrodes are arranged are combined, it is called a ghost error that coordinates not corresponding to the touched portion are derived. According to the above example, G1 (2, 7) and G2 (6, 2) are coordinates due to Gosto error.

As described above, the touch panel according to the related art can appropriately detect one touched portion, but when two or more touched portions are sensed at the same time, the coordinate due to the ghost error and the coordinates of the touched portion are distinguished I can not detect the touched part correctly.

Accordingly, the present invention provides a touch panel capable of appropriately detecting two or more portions touched at the same time, and a driving method thereof.

According to an aspect of the present invention, there is provided a display device including a plurality of cells arranged in a first direction and having different sizes and bridges connecting a plurality of cells arranged in the first direction in the first direction, A plurality of first electrodes; And a plurality of second electrodes connected in a second direction perpendicular to the first direction and each including a plurality of cells having different sizes.

The present invention also provides a plasma display apparatus comprising: a plurality of first electrodes arranged in a first direction and each including a plurality of cells having different areas so as to generate different touch capacitances, Detecting a first scan electrode of the scan electrode; A plurality of second electrodes connected in a second direction perpendicular to the first direction and each including a plurality of cells having different areas so as to generate different touch capacitances, Detecting one second scan electrode; And detecting at least one touch coordinate corresponding to a voltage level variation amount of the at least one first scan electrode or a voltage level variation amount of the at least one second scan electrode, ≪ / RTI >

As described above, the touch panel according to the present invention includes a plurality of electrodes each including a plurality of cells having different overlapping areas with the conductors, and the plurality of cells corresponding to one electrode, The touch capacitances between the conductors are generated differently depending on the size of the touched cell. Accordingly, since the voltage level of the electrode including the touched cell fluctuates with the variation amount corresponding to the touched cell, by detecting the position of the cell corresponding to the variation amount of the voltage level of the electrode, Can be detected.

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

2 shows a touch panel according to a first embodiment of the present invention. 3 is a cross-sectional view of a-a 'shown in Fig.

As shown in FIG. 2, the touch panel according to the first embodiment of the present invention includes a first pattern 100 and a second pattern 100, in which a plurality of cells having different sizes are arranged in a horizontal direction, A plurality of X electrodes X1 to X6 each including a bridge 101 connecting the plurality of X electrodes X1 to X6 in a lateral direction and a plurality of cells 200 having different sizes in a longitudinal direction, And Y electrodes Y1 to Y6. At this time, in each of the plurality of X electrodes (X1 to X6) and the plurality of Y electrodes (Y1 to Y6), each of the plurality of cells is formed into a plane of polygonal shape such as rhombus. The plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 are connected to corresponding pads (not shown) through leads (not shown), respectively, And externally applies a signal.

3, a bridge 101 is disposed on the upper surface of the support substrate 300 in a lateral direction, and an insulation layer 102 is formed on the entire surface of the support substrate 300 including the bridge 101, A layer 400 is formed. At this time, a part of the insulating layer 400 corresponding to a part of the bridge 101 is removed to expose a part of the bridge 101. In this state, the second pattern 200 (corresponding to the first pattern 100 and the plurality of Y electrodes Y1 to Y6, respectively) corresponding to the plurality of X electrodes X1 to X6 is formed on the insulating layer 400 Is formed. At this time, a plurality of cells included in the second pattern 200 are connected to each other in the horizontal direction through the bridge 101.

Particularly, according to the first embodiment, a plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 have different sizes. At this time, the touch capacitance Ctouch generated in the overlapped region between the cell and the conductive body, such as a finger or a touch pen, is generated with different values depending on the size of the touched cell, and depending on the touch capacitance, So that the voltage level of the electrode including the cell is varied. Accordingly, in the electrode in which the voltage level has changed, a cell having a size corresponding to the variation amount of the voltage level among a plurality of corresponding cells can be regarded as a touched cell.

2, in a plurality of cells 100 corresponding to any one of a plurality of X electrodes X1 to X6, cells adjacent to one side in the horizontal direction (corresponding to the left side in FIG. 2) And has a smaller size than a cell adjacent to the other side (corresponding to the right side in FIG. 2) in the horizontal direction. For example, a first cell ("1" in FIG. 2) adjacent to the Y1 electrode disposed on one side of the horizontal direction among the plurality of cells 100 corresponding to the X1 electrode, which is one of the plurality of X electrodes X1 to X6 (Shown as "2" in FIG. 2) adjacent to the Y6 electrode disposed on the other side of the lateral direction has a second size larger than the first size.

In a plurality of cells 200 connected in the longitudinal direction corresponding to any one of the plurality of Y electrodes Y1 to Y6, cells adjacent to one side in the longitudinal direction (corresponding to the upper side in Fig. 2) And has a smaller size than a cell adjacent to one side (corresponding to the lower side in Fig. 2). For example, a third cell (referred to as "3" in Fig. 2) adjacent to the X1 electrode disposed on one longitudinal side of the plurality of cells 200 corresponding to the Y5 electrode as one of the plurality of Y electrodes Y1 to Y6 (Indicated by "4" in FIG. 2) adjacent to the X6 electrode disposed on the other side of the longitudinal direction has a rhombic shape of the third size and a fourth cell .

과

은 도전체와 보호층(미도시) 각각의 유전율을 나타낸다.As described above, since a plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 have different sizes, the area of the region where the touched cell and the conductive material overlap Is different for each touched cell, and the touch capacitance Ctouch is generated differently depending on the size of the touched cell. At this time, the touch capacitance Ctouch is inversely proportional to the distance d between the touched cell and the conductor, and is proportional to the area A where the touched cell and the conductor overlap, as shown in the following equation (1) do. In Equation (1)

and

Represents the permittivity of each of the conductor and the protective layer (not shown).

As described above, by the touch capacitance Ctouch generated between the conductor and the touched cell due to the touch of the conductor, the potential of the X electrodes X1 to X6 or Y electrodes Y1 to Y6 The voltage level fluctuates.

) 및 거리(d))은 동일하다. 이에, 제1셀(①)에 대응하는 터치 정전용량(Ctouch)은 제1 면적에 비례하고, 제2셀(②)에 대응하는 터치 정전용량(Ctouch)은 제2 면적에 비례하므로, 터치 정전용량(Ctouch)은 제1셀(①) 이 터치된 경우보다 제2셀(②)이 터치된 경우에 더 크게 발생된다. 따라서, X2전극의 전압레벨은, 제1셀(①)이 터치되었을 때보다 제2셀(②)이 터치되었을 때에 더 큰 변동량으로 변동하게 된다.For example, assuming that the size of a conductor is larger than a cell having a maximum size among a plurality of cells, a case where a first cell (1) having a first size is touched and a second size The overlap area between the first cell (1) and the conductor corresponds to the first area corresponding to the first size, and the overlap area between the second cell (2) and the conductive The overlapping area between the bodies corresponds to the second area corresponding to the second size. At this time, the remaining conditions except for the area (A) of the region where the touched cell and the conductor overlap each other (the dielectric constant of the conductor and the protective layer

) And distance d) are the same. Thus, the touch capacitance Ctouch corresponding to the first cell (1) is proportional to the first area, and the touch capacitance Ctouch corresponding to the second cell (2) is proportional to the second area, The capacitance Ctouch is generated larger when the second cell (2) is touched than when the first cell (1) is touched. Therefore, the voltage level of the X2 electrode fluctuates to a larger variation amount when the second cell (2) is touched than when the first cell (1) is touched.

As described above, each of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 includes a plurality of cells having different sizes, and a plurality of X electrodes X1 to X6 or a plurality of When a cell touched by a conductor is included in any one of the Y electrodes Y1 to Y6, the voltage level fluctuates at a variation amount corresponding to the size of the touched cell. Accordingly, the touch panel detects the electrode including the touched cell according to whether the voltage level fluctuates, and detects the touched portion by detecting the position of the cell having the size corresponding to the variation amount of the voltage level.

Next, a method of driving the touch panel according to the first embodiment of the present invention will be described.

4 is a flowchart illustrating a method of driving a touch panel according to the first embodiment of the present invention. 5A to 5E illustrate steps for explaining the method of driving the touch panel shown in FIG. 4. Referring to FIG.

4, the method of driving a touch panel according to the first embodiment of the present invention includes driving a plurality of X electrodes X1 to X6 having at least one scan X electrode having a voltage level different from a first reference level, (S110) of detecting at least one scan Y electrode having a voltage level different from a second reference level among the plurality of Y electrodes Y1 to Y6, (S120) of at least one touch coordinate corresponding to a variation amount of each level or a variation amount of each voltage level of at least one scan Y electrode. Here, the first reference level refers to the voltage level of the X electrode that does not include the touched cell, the second reference level refers to the voltage level of the Y electrode that does not include the touched cell, The level and the second reference level may be the same voltage level. The voltage level of the X electrode including the touched cell fluctuates below the first reference level and the voltage level of the Y electrode including the touched cell may be designed to fluctuate below the second reference level. At this time, the voltage level of the X electrode or the Y electrode including the touched cell fluctuates by a variation amount corresponding to the touch capacitance generated between the touched cell and the conductive body, and the touch capacitance corresponds to the size of the touched cell .

The step of detecting at least one touch coordinate (S120) comprises deriving at least one X reference touch coordinate corresponding to each of at least one scan X electrode and at least one touch reference coordinate corresponding to at least one X reference touch coordinate, And detecting touch coordinates. The step of deriving at least one X reference touch coordinate corresponding to at least one scan X electrode may include calculating a coordinate value of a cell corresponding to a variation amount of a voltage level of one scan X electrode among a plurality of cells corresponding to one scan X electrode And deriving one X-touch coordinate corresponding to the position of the detected cell.

Alternatively, detecting (S120) at least one touch coordinate may comprise deriving at least one Y reference touch coordinate corresponding to each of at least one scan Y electrode and at least one Y reference touch coordinate corresponding to at least one Y reference touch coordinate And detecting one touch coordinate. The step of deriving the at least one Y reference touch coordinates corresponding to at least one scan Y electrode may include the step of calculating the coordinates of the cell corresponding to the variation amount of the voltage level of one scan Y electrode among the plurality of cells corresponding to one scan Y electrode And deriving one Y reference touch coordinate corresponding to the position of the detected cell.

Alternatively, the step of detecting at least one touch coordinate (S120) may include deriving at least one X reference touch coordinate corresponding to each of at least one scan X electrode, at least one touch reference coordinate corresponding to at least one scan Y electrode Deriving one Y reference touch coordinate and detecting at least one touch coordinate where at least one Y reference touch coordinate and at least one Y reference touch coordinate overlap.

Hereinafter, a method of driving the touch panel according to the first embodiment of the present invention will be described with reference to Figs. 5A to 5G.

When the first portion C1 (2,1) and the second portion C2 (6,5) are simultaneously touched with the conductor on the touch panel as shown in FIG. 5A, the first portion C1 (2 , 1) and a touch is generated in the region where the conductor overlaps with at least one cell adjacent to the second portion (C2 (6,5)), and in the region where the conductor overlaps with at least one cell adjacent to the second portion Respectively.

As shown in FIG. 5B, in step S100 of detecting at least one scan X electrode, voltage levels are sequentially recognized for each of the plurality of X electrodes X1 to X6, And detects at least one scan X electrode having a low voltage level. At this time, an X2 electrode including a cell adjacent to the first portion C1 (2,1) and an X6 electrode including a cell adjacent to the second portion C2 (6,5) are detected as a scan X electrode.

5C, in the step of detecting at least one scan Y electrode, the voltage levels are sequentially recognized for each of the plurality of Y electrodes Y1 to Y6, and a voltage level lower than the second reference level At least one scan Y electrode having a scan electrode Y. At this time, the Y1 electrode including the cell adjacent to the first portion C1 (2,1) and the Y5 electrode including the cell adjacent to the second portion C2 (6,5) are detected as the scan Y electrode.

The step of detecting at least one touch coordinate (S120) comprises: deriving at least one X reference touch coordinate corresponding to each of at least one scan X electrode and at least one X reference touch coordinate corresponding to at least one X coordinate And detecting with at least one touch coordinate. At this time, in the step of deriving at least one X reference touch coordinate corresponding to at least one scan X electrode, as shown in FIG. 5D, the size corresponding to the variation amount of the voltage level of the X2 electrode, which is one of the scan X electrodes, Detects a second cell (X2-2) of the X2 electrode and derives C1 (2,1) corresponding to the second cell (X2-2) of the X2 electrode as X reference touch coordinates. Then, the sixth cell X6-6 of the X6 electrode having a magnitude corresponding to the variation of the voltage level of the X6 electrode, which is one of the scan X electrodes, is detected, and the sixth cell X6-6 corresponding to the sixth cell X6-6 of the X6 electrode C2 (2,6) is derived as the X-touch coordinate. Then, C1 (2,1) and C2 (6,5) thus derived are detected as at least one touch coordinates.

Alternatively, the step of detecting at least one touch coordinate (S120) may comprise deriving at least one Y reference touch coordinate corresponding to at least one scan Y electrode, And detecting the coordinates with at least one touch coordinate. At this time, in the step of deriving at least one Y reference touch coordinate corresponding to at least one scan Y electrode, a cell having a magnitude corresponding to the variation amount of the voltage level of the Y1 electrode, which is one of the scan Y electrodes, is detected, Coordinates corresponding to the position of the cell are derived as Y-touch coordinates. Likewise, a cell having a magnitude corresponding to the amount of variation of the voltage level of the Y5 electrode, which is one of the scan Y electrodes, is detected, and the coordinates corresponding to the detected cell position are derived as the Y reference touch coordinates. 5E, the first portion C1 (2,1) overlaps between the second cell Y1-2 and the third cell Y1-3 of the Y1 electrode, and the second portion C2 (6, 5) are overlapped only on a part of the sixth cell Y5-6 of the Y5 electrode, the Y touch coordinates may not be properly derived.

Alternatively, the step of detecting at least one touch coordinate (S120) may include deriving at least one X reference touch coordinate corresponding to at least one scan X electrode, as described above, Deriving a corresponding at least one Y reference touch coordinate and detecting at least one touch coordinate corresponding to at least one X reference touch coordinate or at least one Y reference touch coordinate.

As described above, according to the first embodiment of the present invention, each of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 is composed of a plurality of cells having different sizes. Accordingly, a touch capacitance having a different amount in proportion to the size of the touched cell is generated in the region where the conductor touching the cell overlaps with the touched cell, and the voltage of the X electrode and the Y electrode The variation amount of the level is determined. Therefore, the touch panel according to the first embodiment detects the position of the cell corresponding to the variation amount of the voltage level of the X electrode and the Y electrode among the plurality of cells constituting the X electrode or the Y electrode with the voltage level fluctuated, You can detect two or more touched parts.

Next, a touch panel according to a second embodiment and a third embodiment of the present invention will be described.

FIG. 6 shows a touch panel according to a second embodiment of the present invention, and FIG. 7 shows a touch panel according to a third embodiment of the present invention.

As described above, in the touch panel according to the first embodiment, the plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y (Y1 to Y6) So that different amounts of touch capacitance are generated. On the contrary, in the touch panels according to the second and third embodiments, a plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y (Y1 to Y6) As shown in FIGS. 6 and 7, by having the same size rhombic shape including different fine patterns, different amounts of touch capacitance are generated. The touch panel according to the second and third embodiments may include a plurality of cells having the same size rhombus shape including fine patterns instead of a plurality of cells having rhombic shapes of different sizes The touch panel is the same as that of the touch panel according to the first embodiment, and a description thereof will be omitted below.

6, the touch panel according to the second embodiment of the present invention includes a third pattern 110 and a third pattern 110, in which a plurality of cells corresponding to rhombic shapes of the same size are arranged in a horizontal direction, A plurality of X electrodes X1 to X6 each including a bridge 101 connecting the plurality of X electrodes X1 to X6 in the horizontal direction) and a fourth pattern 210 in which a plurality of cells corresponding to a rhombic shape of the same size are longitudinally connected And a plurality of Y electrodes Y1 to Y6 each including a plurality of Y electrodes Y1 to Y6. At this time, each of the plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 includes different fine patterns, and the fine patterns are spaced apart at regular intervals And includes a predetermined number of holes of a polygonal shape.

In other words, in a plurality of cells 110 corresponding to any one of the plurality of X electrodes X1 to X6, cells adjacent in the lateral direction (corresponding to the left side in Fig. 6) The number of holes is larger than the number of the adjacent cells. For example, a first cell (referred to as "a" in Fig. 6) adjacent to the Y1 electrode disposed on one side of the horizontal direction among the plurality of cells 110 corresponding to the X1 electrode, which is one of the plurality of X electrodes X1 to X6 A second cell (indicated by "b" in FIG. 6) adjacent to the Y6 electrode disposed on the other side of the lateral direction is formed in a fine pattern including 21 holes, .

In a plurality of cells 210 connected in the longitudinal direction corresponding to one of the plurality of Y electrodes Y1 to Y6, cells adjacent to one side in the longitudinal direction (corresponding to the upper side in Fig. 6) Is formed in a fine pattern including a larger number of holes than the cells adjacent to one side (corresponding to the lower side in Fig. 6). For example, in a plurality of cells 210 corresponding to the Y5 electrode, which is one of the plurality of Y electrodes Y1 to Y6, a third cell adjacent to the X1 electrode disposed on one side in the vertical direction (" 6) is formed in a fine pattern including 21 holes, and a fourth cell (shown as "d" in Fig. 6) adjacent to the X6 electrode disposed on the other side in the longitudinal direction is formed as a fine pattern .

As described above, according to the second embodiment, each of the plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 includes fine And the touch capacitances Ctouch generated between the conductor touching the cell and the touched cell are generated differently from one cell to another.

7, the touch panel according to the third embodiment of the present invention includes a fifth pattern 120 and a fifth pattern 120, in which a plurality of cells corresponding to rhombic shapes of the same size are arranged in the horizontal direction, A plurality of X electrodes X1 to X6 each including a bridge 101 connecting the plurality of X electrodes X1 to X6 in the horizontal direction and a sixth pattern 220 in which a plurality of cells corresponding to a rhombic shape of the same size are connected in the longitudinal direction, And a plurality of Y electrodes Y1 to Y6 each including a plurality of Y electrodes Y1 to Y6. At this time, each of the plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 includes different fine patterns. The fine patterns are spaced apart from the cell outline at regular intervals (Hereinafter, referred to as "pass holes") in the form of a path, which is arranged to be coincident with the cell outline, by a predetermined area of the cell. The width of the pass holes can be determined differently, and the area in which the pass holes are arranged becomes larger as they are closer to the cell outline.

That is, in the plurality of cells 120 corresponding to any one of the plurality of X electrodes X1 to X6, the cells adjacent in the lateral direction (corresponding to the left side in Fig. 7) The number of the pass holes is larger than the number of the adjacent cells. For example, in a first cell ("X" in FIG. 7) adjacent to the Y1 electrode disposed on one side of the horizontal direction among the plurality of cells 120 corresponding to the X1 electrode, which is one of the plurality of X electrodes X1 to X6 6) formed in a fine pattern including five pass holes and adjacent to the Y6 electrode disposed on the other side in the lateral direction (not shown in FIG. 6) includes no pass holes And is formed in a fine pattern.

In a plurality of cells 220 connected in the longitudinal direction corresponding to one of the plurality of Y electrodes Y1 to Y6, cells adjacent to one side in the longitudinal direction (corresponding to the upper side in Fig. 7) And is formed in a fine pattern including a larger number of pass holes than cells adjacent to one side (corresponding to the lower side in Fig. 7). For example, a third cell (referred to as "X2" in Fig. 6) adjacent to the X1 electrode disposed on one longitudinal side of the plurality of cells 220 corresponding to the Y5 electrode as one of the plurality of Y electrodes Y1 to Y6 (Shown by "" in Fig. 6) adjacent to the X6 electrode disposed on the other side of the longitudinal direction is formed in a fine pattern including five pass holes, And is formed in a fine pattern.

As described above, according to the third embodiment, each of the plurality of cells corresponding to any one of the plurality of X electrodes X1 to X6 and the plurality of Y electrodes Y1 to Y6 includes pass holes having different areas The touch capacitances Ctouch generated between the conductor touching the cell and the touched cell are formed differently for each cell position.

Meanwhile, the method of driving the touch panel according to the second embodiment and the third embodiment is the same as the method of driving the touch panel according to the first embodiment, and a description thereof will be omitted below.

2, 5 to 7 correspond to a plurality of X electrodes X1 to X6 and a plurality of Y electrodes Y1 to Y6, respectively, in the first to third embodiments of the present invention, A plurality of cells is shown as having a rhombus shape, but this is merely an example, and a plurality of cells may be formed in any form such as a polygon or a circle.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes may be made without departing from the technical spirit of the present invention.

1 shows a conventional touch panel.

2 shows a touch panel according to a first embodiment of the present invention.

3 is a cross-sectional view of a-a 'shown in Fig.

4 is a flowchart illustrating a method of driving a touch panel according to the first embodiment of the present invention.

FIGS. 5A to 5E show steps for illustrating the method of driving the touch panel shown in FIG. 4 in stages.

6 shows a touch panel according to a second embodiment of the present invention.

7 shows a touch panel according to a third embodiment of the present invention.

≪ Description of Identification Numbers for Main Parts of the Drawings >

100: first pattern (a plurality of X electrodes X1 to X6) 110: bridge

200: a second pattern (a plurality of Y electrodes Y1 to Y6) 300:

400: insulating layer

T1, T2: Touched part

G1, G2: coordinates due to ghost error

Claims (10)

A plurality of first electrodes arranged in a first direction and arranged in a second direction perpendicular to the first direction, the first electrodes including a plurality of first cells arranged in a first direction and having different sizes and bridges connecting the plurality of first cells; And And a plurality of second electrodes arranged in the first direction and including a plurality of second cells connected in the second direction and having different sizes, Wherein the plurality of first cells have the same size in the second direction, Wherein the plurality of second cells have the same size in the first direction. A plurality of first cells arranged in a first direction and having a different number of holes and a bridge connecting the plurality of first cells, the plurality of first cells arranged in a second direction perpendicular to the first direction, One electrode; And A plurality of second electrodes connected in the second direction and having a plurality of second cells having different numbers of holes and arranged in the first direction, Wherein the first cells arranged in the second direction have the same number of holes, And the second cells arranged in the first direction have the same number of holes. 3. The method of claim 2, Wherein the holes are formed in a polygonal shape that are spaced apart from each other at a predetermined interval in the first cell and the second cell. 3. The method of claim 2, Wherein the hole is in the form of a path that is co-mingled with the first cell or the second cell. 3. The method according to claim 1 or 2, Wherein a touch capacitance of the first cell adjacent to the first cell in the first direction is different from a touch capacitance of the first cell in the first direction. 3. The method according to claim 1 or 2, And the second cells adjacent to each other in the second direction have different touch capacitances with respect to the conductors. A plurality of first electrodes connected in a first direction and having a different area from each other and arranged in a second direction perpendicular to the first direction, Detecting a first scan electrode; And a plurality of second cells connected in the second direction and having different areas, wherein at least one second scan having a voltage level different from a second reference level among the plurality of second electrodes arranged in the first direction Detecting an electrode; And Detecting at least one touch coordinate corresponding to a voltage level variation of the at least one first scan electrode or a voltage level variation of the at least one second scan electrode, The first cell having the same area in the second direction, And the second cell has the same area in the first direction. 8. The method of claim 7, Wherein the step of detecting the at least one touch coordinate comprises: Deriving at least one first reference touch coordinate corresponding to a variation amount of the voltage level of the at least one first scan electrode; And Detecting at least one touch coordinates corresponding to the at least one first reference touch coordinates. 8. The method of claim 7, Wherein the step of detecting the at least one touch coordinate comprises: Deriving at least one first reference touch coordinate corresponding to each of the at least one first scan electrode; Deriving at least one second reference touch coordinate corresponding to each of the at least one second scan electrode; And And deriving at least one touch coordinate corresponding to the at least one first reference touch coordinate or the at least one second reference touch coordinate. 10. The method according to claim 8 or 9, The step of deriving the at least one first reference touch coordinates may include detecting a position of a cell corresponding to a variation amount of a voltage level of the one first scan electrode among a plurality of cells included in one first scan electrode, And deriving a first reference touch coordinate corresponding to a position of the detected cell.

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