WO2017014417A1

WO2017014417A1 - Circular touch panel

Info

Publication number: WO2017014417A1
Application number: PCT/KR2016/004859
Authority: WO
Inventors: 민동진
Original assignee: 주식회사 멜파스
Priority date: 2015-07-21
Filing date: 2016-05-10
Publication date: 2017-01-26
Also published as: KR101767461B1; KR20170011168A

Abstract

A touch panel according to the present embodiment comprises: a circular substrate; a first finger pattern including a plurality of first fingers disposed in a central direction from a circumference of the circular substrate and extended in a first direction along the circumference; and a second finger pattern including a plurality of second fingers disposed in a central direction from the circumference of the circular substrate and extended in a second direction along the circumference such that the second fingers are interdigitated with the first fingers, wherein the first finger pattern and the second finger pattern form an annular sector shape.

Description

Circular touch panel

The present invention relates to a circular touch panel.

Currently, the sensing methods used in the touch screen are mainly the resistive method, the surface ultrasonic method, and the capacitive method. Among them, the capacitive method is adopted as the main input means of portable mobile devices because of its excellent durability and visibility. It is becoming a trend.

The capacitive touch screen detects a user input by detecting a change in the amount of charge charged to capacitive sensors on the touch screen panel due to user interference, and recognizes a user input according to a charge storage method. And mutual capacitive. The self capacitance method forms one conductor per one capacitive sensor to form a charging surface and a reference ground outside the touch screen panel.

Conventional circular touch screen panels detect hexagonal or rectangular touch sensing electrodes on a transparent circular substrate to detect a touch of an object. According to the circular touch screen panel according to the related art, a region in which a touch cannot be sensed is distributed because a hexagonal or square pattern cannot be formed around the circumference of the circle.

The present embodiment is to solve the above-described problems of the prior art, and it is one of the main objectives of the present embodiment to provide a circular touch panel capable of detecting a touch with high sensitivity and accuracy not only in the center but also in the vicinity of the circumference.

The touch panel according to the present embodiment includes a circular substrate, a first finger pattern including a plurality of first fingers disposed in a center direction around the circular substrate and extending in a first direction along a circumference, and around the circular substrate. A second finger pattern disposed in a central direction and extending in a second direction along a circumference, the second finger pattern including a plurality of second fingers interdigitated with the first fingers; Finger patterns form an annular sector shape.

The touch panel according to the present embodiment includes a circular substrate, a plurality of A fingers each extending in a first direction along the circumference and disposed in the center direction from the circumference, extending in the second direction along the circumference, and the center at the circumference. A first pattern including a plurality of B fingers disposed in a direction, and a second pattern each including a plurality of second fingers extending in a second direction and interdigitated with the A fingers and disposed in a center direction at a circumference thereof And a third pattern extending in the first direction and interdigitated with the B fingers, the third pattern including a plurality of third finger patterns disposed in a center direction from the circumference.

According to the present exemplary embodiment, since patterns for detecting a touch are formed not only inside the circular touch panel but also around the periphery, a problem of the prior art, in which the touch cannot be detected near the periphery, can be solved. In addition, according to the present embodiment, since the patterns forming the partial rings of the quadrant, the eighth circle, and the semicircle are used, the touch of the object and the movement of the object can be detected with high sensitivity and accuracy. Furthermore, according to the present embodiment, since the touch by the object is detected with a smaller number of patterns than the prior art, the number of conductive lines connecting the pattern and the detection unit is reduced.

1 is a view showing an outline of a circular touch panel according to the present embodiment.

FIG. 2 is a diagram for describing a process of detecting a touch using a touch panel according to the present embodiment when an object providing a touch input moves in a circumferential direction.

FIG. 3 is a diagram for describing a process of detecting a position of an object using a touch panel when an object providing a touch input moves from a circumference to a center direction.

4 is a diagram illustrating an outline of a touch panel according to a second exemplary embodiment of the present invention.

FIG. 5 is a diagram for describing a method of identifying a position of an object with a touch panel according to an exemplary embodiment when an object providing a touch input moves in a circumferential direction.

FIG. 6 is a diagram for describing a method of identifying a position of an object with a touch panel according to an exemplary embodiment when an object providing a touch input moves from a circumference to a center direction.

Description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as limited by the embodiments described in the text. That is, since the embodiments may be variously modified and may have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "include" or "have" refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present, but not to exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

Each step may occur differently from the stated order unless the context clearly dictates the specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

The drawings referred to for describing the embodiments of the present disclosure are intentionally exaggerated in size, height, thickness, etc. for ease of explanation and easy understanding, and are not to be enlarged or reduced in proportion. In addition, any component illustrated in the drawings may be intentionally reduced in size, and other components may be intentionally enlarged in size.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms such as those defined in the commonly used dictionaries should be construed to be consistent with the meanings in the context of the related art and should not be construed as having ideal or overly formal meanings unless expressly defined in this application. .

Hereinafter, in this specification, an annular sector shape is obtained by obtaining only a portion having a desired center angle in a ring shape formed by a circle having a common center but having two different radii. Say. For example, the quadrilateral portion of the quadrant means that only a portion having a central angle of 90 degrees is obtained from the circular portion. Therefore, the partial annulus of the quadrant may be described as a part in which a sector having a center angle of 90 degrees and a radius r1 has the same center and a sector having the same center angle but having a radius r2 (r1> r2). Naturally, the central angle of the partial ring may be greater than 180 degrees.

In addition, in the present specification, the pattern extending in one direction is used to mean that the pattern is not broken in one direction and continues, and that the width of the pattern decreases as it progresses in one direction.

제1 실시예First embodiment

1 is a view showing an outline of a circular touch panel according to the present embodiment. In FIG. 1, only quadrants of the circular touch panel are illustrated in different colors for easier understanding. Referring to FIG. 1, a circular touch panel according to the present exemplary embodiment includes a circular substrate and a plurality of

first fingers

110a, 110b, and 110c disposed in a center direction around the circular substrate and extending in a first direction along a circumference thereof. Disposed in the center direction around the first finger pattern 110 and the circular substrate and extending in the second direction along the circumference and interdigitated with the

first fingers

110a, 110b, and 110c. And a second finger pattern 120 including a plurality of

second fingers

120a, 120b, and 120c, wherein the first finger pattern and the second finger pattern where each of the fingers are interdigitated are partially looped. to form an annular sector shape.

The first finger pattern 210 and the second finger pattern 220 are positioned on one surface of the substrate 100. In one embodiment, when the touch panel is mounted on the display panel to form a touch screen, the substrate may be transparent to transmit visual information displayed by the display panel. For example, the substrate is a glass substrate. As another example, the substrate may be a transparent polyethylene terephthalate (PET) film. As another example, which is not illustrated, the substrate may be used as the substrate as long as it is a transparent material that can transmit visual information provided by the display positioned on the rear surface.

The first finger pattern 110 includes a plurality of

first fingers

110a, 110b, and 110c extending in a first direction, and the second finger pattern 120 includes a plurality of second fingers extending in a second direction.

Fields

120a, 120b, and 120c. The first finger pattern 110 and the second finger pattern 120 are interdigitated with each other, and the first finger pattern and the second finger pattern including the respective fingers interposed with each other are partially annular ( annular sector shape (115).

Each pattern including the first finger pattern 110 and the second finger pattern 120 is formed of a transparent material. If the touch screen is to be implemented using the touch panel according to the present embodiment, the patterns receiving the touch input from the user should also be transparent. For example, the patterns provided with the touch input are formed of a transparent material having conductivity such as indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), and indium cadmium oxide (ICO). In another example, the patterns can be formed of a CNT film (Carbon Nano Tube Film). The CNT film can flow a current of higher density than a transparent conductive material such as ITO.

In one embodiment, the first finger pattern 110 includes a plurality of

first fingers

110a, 110b, 110c. The second finger pattern 120 includes a plurality of

second fingers

120a, 120b and 120c. In the embodiment illustrated in FIG. 1, the first finger pattern 110 includes three

fingers

110a, 110b and 110c, and the second finger pattern 120 includes three

fingers

120a, 120b and 120c. Although shown as including), these are only examples, and the number of fingers included in each pattern may vary.

The

first fingers

110a, 110b and 110c and the second

second fingers

120a, 120b and 120c are interposed with each other. As will be described later, since the fingers are interposed with each other, the touch coordinates due to the object can be detected, and even when the position of the object providing the touch input changes, the change in the touch coordinates can be tracked more precisely.

In the embodiment illustrated in FIG. 1, the first finger pattern 110 and the second finger pattern 120 form a partial annular 115 of an eight-quadrant. According to another embodiment, the first finger pattern and the second finger pattern may form a ring of divided circles that are larger or smaller than the ring of the eighth circle. The third finger pattern 130 and the fourth finger pattern 140 also include a plurality of fingers (not shown), and the fingers and the fourth finger pattern 140 included in the third finger pattern 130. Fingers included in are interdigitated with each other. The third finger pattern 130 and the fourth finger pattern 140 form an eight-quadrant circular ring 155. An eight-membered ring 115 and a third finger pattern 130 formed by the first finger pattern 110 and the second finger pattern 120 may be formed.

According to the present exemplary embodiment, the touch input of the touch panel is detected as patterns forming a partial circle of an eighth circle. This pattern has a large pattern width variation with respect to the pattern length compared to the patterns forming the partial or semi-circular partial annular, so that the movement of the object providing the touch input can be detected with high sensitivity and high accuracy. Is provided.

In the embodiment illustrated in FIG. 1, the fifth finger pattern 150 and the sixth finger pattern 160 each include a plurality of fingers (not shown), and the fifth finger pattern 150 and the sixth finger. Fingers included in the pattern 160 are interposed between the fingers. In the embodiment illustrated in FIG. 1, the fifth finger pattern 150 and the sixth finger pattern 160 are each shown to include three fingers. However, these are only examples, and the number of fingers included in each pattern may vary.

The fifth finger pattern 150 and the sixth finger pattern 160 interdigitated with each other form a quadrangular partial annular shape. In an embodiment, the fifth finger pattern 150 and the sixth finger pattern 160 may be disposed in the hollow of the quadrant partial annular which the first to fourth finger patterns form. The sixth to sixth finger patterns may form a partial ring of quadrant as a result.

In the embodiment illustrated in FIG. 1, the first sector pattern 170 and the second sector pattern 180 are formed of quadrilateral partial rings formed by the fifth finger pattern 150 and the sixth finger pattern 160. It is located in the hollow. In the illustrated embodiment, each of the first sector pattern 170 and the second sector pattern 180 is in the form of an eight-membered sector, which is just one example, and thus the center angle of the sector may vary from one embodiment to another.

In the embodiment illustrated in FIG. 1, the first to sixth finger patterns and the first and second fan patterns may form any one region of a quadrangular circular touch panel. This is only a simple embodiment, and a person skilled in the art may form a touch panel obtained by dividing a circular touch panel by n (n: natural numbers) based on the above-described embodiment.

In one embodiment, in the touch panel quadrant formed by the first to sixth finger patterns and the first and second sectoral patterns, an electrical signal is applied to each finger pattern and the sectoral pattern adjacent to both sides except the arc. Acceptable conductors are formed. In an embodiment, the conductive lines may be formed together in a patterning process of forming the first to sixth finger patterns and the first and second sectoral patterns of the same material as the respective patterns. In another embodiment, the conductive wire may be a metal wire such as silver wire, gold wire, or the like.

Unlike each of the first to sixth finger patterns having a plurality of fingers, the first and

second fan patterns

170 and 180 each have an eight-quadrant shape. If a finger pattern having a plurality of interdigitated fingers is formed at the center of the touch panel (see FIG. 3 B3), the width of the finger is minutely formed, which may cause a problem of deterioration of sensitivity that can identify the position of the object. Can be. Also, the amount of movement of the object to be detected at the center (see FIG. 3 B3) is fine compared to moving along the circumference at the outer portion of the touch panel (see position of FIG. 3 B1). Therefore, it is more preferable in terms of sensitivity to detect a touch and movement of the object by forming a plurality of fan-shaped patterns in the center as in the present embodiment.

2 is a diagram for describing a process of detecting a touch using a touch panel according to the present embodiment when an object providing a touch input moves in a circumferential direction along an arrow. Referring to FIG. 2, a cross section in which an object provides a touch input to a touch panel is illustrated as a circle (F).

When the object is at the A1 position, the ratio of the first finger pattern 110 to the object cross section F is greater than the ratio of the second finger pattern 120 to the object cross section F. When the object touches at the A1 position, the capacitance change amount formed between the first finger pattern 110 and the object is greater than the capacitance change amount formed between the second finger pattern 120 and the object. Therefore, the detection unit (not shown) that detects the touch may determine the position of the object performing the touch by calculating a ratio of the capacitance change amount of the first finger pattern 110 and the capacitance change amount of the second finger pattern 120.

As the object moves along the arrow, the ratio of the first finger pattern 110 to the cross section F of the object decreases, and the ratio of the second finger pattern 120 to the cross section F of the object increases. When the object moves to reach the A2 position, the ratio of the second finger pattern 120 to the cross section F of the object is greater than the ratio of the first finger pattern 110 to the cross section F of the object, and the fourth The ratio of the third finger pattern 130 to the cross section F of the object is greater than the ratio of the finger pattern 140 to the cross section F of the object. In addition, the ratio of the second finger pattern 120 to the cross section F of the object and the ratio of the third finger pattern 130 to the cross section F of the object are similar. Therefore, when the object provides a touch input at the A2 position, a detector (not shown) that detects a touch may detect a current change position of the object by detecting an amount of change in capacitance of the first to fourth finger patterns generated by the touch of the object. have.

As the object moves along the arrow, the ratio of the first finger pattern 110 and the second finger pattern 120 to the cross section F of the object decreases, and the third finger pattern 130 and the fourth finger pattern ( The proportion at which 140 occupies the cross section F of the object is increased. When the object moves to reach the A3 position, the ratio of the fourth finger pattern 140 to the cross section F of the object is greater than the ratio of the third finger pattern 130 to the cross section F of the object. Therefore, the change in capacitance caused by the touch of the object is larger in the fourth finger pattern 140 than in the third finger pattern 130. The detector (not shown) may detect the position of the object performing the touch by detecting an amount of change in capacitance between the third finger pattern 130 and the fourth finger pattern 140 generated by the touch of the object.

3 is a diagram for describing a process of detecting a position of an object when an object performing a touch moves in a circumferential direction along an arrow in the touch panel according to the present embodiment. Referring to FIG. 3, when the object is in the B1 position, the ratios of the first to fourth finger patterns occupy the object cross section F are similar to each other. Therefore, when the touch is performed by the object, the capacitance change amounts formed between the first to fourth finger patterns and the object are all similar. Therefore, the detection unit (not shown) that detects the touch may determine the position of the object performing the touch by calculating the ratio of the capacitance change amount of the first to fourth finger patterns.

As the object moves along the arrow, the ratio of the first to fourth finger patterns occupying the cross section F of the object decreases, and the fifth finger pattern 150 and the sixth finger pattern 160 form the cross section F of the object. Occupy). When the object moves to reach the B2 position, the first to fourth finger patterns do not occupy the cross section of the object, and the fifth finger pattern 150 and the sixth finger pattern 160 have a similar ratio to each other. Occupies (F) Accordingly, the change in capacitance caused by the touch of the object is similar to each other in the fifth finger pattern 150 and the sixth finger pattern. The detector (not shown) may detect the position of the object by detecting a capacitance change occurring in the fifth finger pattern 150 and the sixth finger pattern 160.

As the object moves further along the arrow, the ratio of the fifth finger pattern 150 and the sixth finger pattern 160 to the cross section F of the object decreases, and the first sector pattern 170 and the second sector pattern are reduced. The proportion at which 180 occupies the cross section F of the object is increased. When the object reaches the B3 position, the fifth finger pattern 150 and the sixth finger pattern 160 do not occupy the cross section of the object. In addition, the first sector pattern 170 and the second sector pattern 180 occupy the cross-section (F) of the object similarly to each other. Therefore, the capacitance change generated in the first sector pattern 170 and the second sector pattern 180 by the touch of the object is similar to each other. Therefore, the detector (not shown) may detect the position of the object by detecting a change in capacitance of the first sector pattern 170 and the second sector pattern 180 by touching the object.

According to the present embodiment, since the touch input by the object is detected by using the patterns of the 8-quadrant annular patterns and the 4-quadrant annular patterns having a large change in the pattern width according to the length of the pattern, the touch coordinates of the object and the object An advantage is provided that the movement of can be detected accurately with higher sensitivity.

제2 실시예Second embodiment

4 is a diagram illustrating an outline of a touch panel according to a second exemplary embodiment of the present invention. In FIG. 4, only semi-circles are shown in different colors in the circular touch panel for easier understanding. Hereinafter, this embodiment will be described with reference to FIG. 4. However, descriptions that are the same as or similar to those of the first embodiment may be omitted for clarity and concise description.

The touch panel according to the present embodiment includes a circular substrate, a plurality of A

fingers

210a, 210b, and 210c extending in a first direction along a circumference and disposed in a center direction from a circumference, and in a second direction along a circumference. A first pattern 210 that includes a plurality of

B fingers

212a, 212b, and 212c extending in a circumferential direction, each of which extends in a second direction to interdigitate with the A fingers; In the second pattern 220 including a plurality of second fingers (220a, 220b, 220c) disposed in the center direction in each of the extending in the first direction and interdigitated with the B fingers, the center direction in the circumference It includes a third pattern 230 including a plurality of third fingers (230a, 230b, 230c) disposed in the.

The substrate Sub may be formed of a transparent material that can transmit the display information provided from the back side as in the first embodiment, and may be glass or PET film. Patterns such as the first pattern 210, the second pattern 220, and the third pattern 230 are formed on one surface of the substrate Sub. The material forming the pattern may be a transparent and conductive material as in the first embodiment.

The first pattern 210 includes a plurality of A

fingers

210a, 210b and 210c extending in the first direction, and the A fingers are disposed in the center direction at the circumference thereof. The first pattern 210 includes a plurality of

B fingers

212a, 212b, and 212c extending in the second direction, and the B fingers are disposed in the center direction at the circumference.

The second pattern 220 includes a plurality of

fingers

220a, 220b, and 220c extending in a second direction, and the fingers of the second pattern 220 interdigitate with the A fingers of the first pattern 210. Is placed. The

A fingers

210a, 210b and 210c of the first pattern 210 and the

fingers

220a, 220b and 220c of the first pattern form a quadrangular partial ring 215.

The third pattern 230 includes a plurality of

fingers

230a, 230b, and 230c extending in the first direction, and the fingers of the third pattern 230 are interposed with the B fingers of the first pattern. The

B fingers

212a, 212b and 212c of the first pattern 210 and the

fingers

230a, 230b and 230c of the third pattern also form a partial annular 217 of the quadrant. The partial annular 215 formed by the first pattern 210 and the second pattern 220 and the partial annular 217 formed by the first pattern 210 and the third pattern 230 may form a semicircular partial annular shape. Achieve.

In an embodiment, the fourth pattern 240 and the fifth pattern 250 are formed in the hollow of the partial ring formed by the first pattern 210, the second pattern 220, and the third pattern 230. ) And a sixth pattern 260 may be disposed. The fourth pattern 240 extends in the first direction along the circumference and is disposed in the center direction at the circumference (not shown), and extends in the second direction along the circumference, and is disposed in the center direction at the circumference. A plurality of fingers (not shown).

Each of the fifth patterns 250 extends in the second direction and interdigitates with the A fingers, and includes a plurality of fingers (not shown) disposed around the center in the circumferential direction. Each of the fourth pattern 240 and the fifth pattern 250 is interdigitated with each other to form a quadrangular partial ring 245. Each of the sixth patterns 260 extends in the first direction and interdigitates with the fingers of the fourth pattern 240, and includes a plurality of fingers (not shown) disposed in the center direction from the circumference. As shown, the partial annular 245 formed by the fourth and fifth patterns and the partial annular 247 formed by the fourth and sixth patterns form a semicircular partial annular shape.

Fan-shaped patterns such as the first fan-shaped pattern 270 and the second fan-shaped pattern 280 may be disposed in the semicircular hollow of the semicircle formed by the fourth pattern 240 to the sixth pattern 260. The fan pattern in this embodiment may be a quadrant fan pattern as shown.

Hereinafter, a method of detecting a touch of an object using the touch panel according to the present embodiment will be described with reference to the accompanying drawings. FIG. 5 is a diagram for describing a method of identifying a position of an object with a touch panel according to an exemplary embodiment when an object providing a touch input moves in a circumferential direction along an arrow. Referring to FIG. 5, when the object is at the X1 position, the first and

second patterns

210 and 230 occupy most of the cross section F of the object. Since the area ratio of the third pattern 230 is greater than the area ratio of the first pattern 210 in the cross section F of the object, when the touch is made by the object, the area of the third pattern 230 is increased. The amount of change in capacitance is larger than the amount of change in capacitance of the first pattern 210. Therefore, the detector (not shown) that detects the touch of the object may determine the current position of the object by detecting the capacitance change amount of the first pattern 210 and the third pattern 230 described above.

As the object moves in the direction of the arrow, the area ratio of the third pattern 230 to occupy the cross section F of the object decreases, and the area ratio of the first pattern 210 to occupy the object cross section F increases. Therefore, the capacitance change amount of the third pattern 230 decreases, and the capacitance change amount of the first pattern 210 increases.

When the object reaches the X2 position, the first pattern 210 occupies most of the object cross section F, but the second pattern 220 and the third pattern 230 occupy the object cross section F at a similar ratio. do. Therefore, when the touch by the object is made, the capacitance change occurring in the first pattern 210 is the largest, and the capacitance change of the similar degree occurs in the second pattern 220 and the third pattern 230. The detector (not shown) may detect that the object is at X2 by using the amount of capacitance change in each pattern.

As the object moves in the direction of the arrow, the third pattern 230 does not occupy the cross section F of the object, and the first pattern 210 and the second pattern 220 occupy the cross section F of the object. As the object moves to the position X3 along the direction of the arrow, the area ratio of the second pattern 220 to occupy the cross section F of the object increases as compared to the first pattern 210. Accordingly, the detector may detect a change in capacitance to detect that the object is moving along the arrow.

When the object reaches the X3 position, the second pattern 220 occupies most of the object cross section F. FIG. Therefore, when the object performs a touch, the capacitance change amount of the second pattern 220 is larger than the capacitance change amount of the first pattern 210. The detector (not shown) may detect the position of the object by calculating a ratio between the capacitance change amount of the first pattern 210 and the capacitance change amount of the second pattern 220.

FIG. 6 is a diagram for describing a method of identifying a position of an object with a touch panel according to an exemplary embodiment when an object providing a touch input moves from a circumference to a center direction along an arrow. Referring to FIG. 6, when the object is at the Y1 position, the first pattern 210 and the third pattern 230 occupy a similar ratio in the cross section of the object. Therefore, when the touch by the object is made, the detection unit (not shown) detects an increase in capacitance at the same degree in the first pattern 210 and the third pattern 230. Therefore, the object may detect the position of the object by detecting the amount of capacitance increase in the first pattern 210 and the third pattern 230.

As the object moves in the center direction along the arrow, the ratio of the first pattern 210 and the third pattern 230 to the object cross-section gradually decreases, and the fourth pattern 240 and the sixth pattern 260 occupy the object. The ratio gradually increases. When the object reaches the Y2 position, the cross section of the object occupies a similar ratio between the fourth pattern 240 and the sixth pattern 260. Therefore, when the object touches Y2, the detector (not shown) may detect the position of the object by calculating a ratio of the capacitance change amount of the fourth pattern 240 to the capacitance change amount of the sixth pattern 260.

As the object moves further toward the center along the arrow, the ratio of the fourth pattern 240 and the sixth pattern 260 to the object cross-section gradually decreases, and the first sector pattern 270 and the second sector pattern 280 decrease. The proportion of occupying the object cross section gradually increases. When the object reaches the Y3 position, the cross section of the object occupies a similar ratio between the first sector pattern 270 and the second sector pattern 280. Therefore, when the touch is made by the object, the capacitance increase amounts in the first sector pattern 270 and the second sector pattern 280 are mutually similar. The detector (not shown) may detect the position of the object by using capacitance increase amounts in the first sector pattern 270 and the second sector pattern 290.

According to the present exemplary embodiment, the touch on the semi-circular region may be detected using two fan patterns and eight patterns including the first to sixth patterns. Therefore, the number of wirings to be connected to each pattern can be reduced. Furthermore, it is possible to reduce the area where the touch sensing pattern cannot be formed in order to form the wiring, thereby reducing the area of the portion where the touch cannot be sensed in the circular panel.

According to this embodiment, unlike the prior art, a touch around the circular panel is detected using a plurality of patterns forming a partial ring of an eight-quadrant, quadrant or semi-circle, thereby reducing the area of the portion where the touch cannot be detected. The advantage is that it can.

Although described with reference to the embodiments shown in the drawings to aid the understanding of the present invention, this is an embodiment for the implementation, it is merely exemplary, those skilled in the art from various modifications and equivalents therefrom It will be appreciated that other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

Listed above

Claims

Circular substrates;

A first finger pattern disposed in a center direction around the circular substrate and including a plurality of first fingers extending in a first direction along a circumference;

A second finger pattern disposed in a center direction of the circular substrate and extending in a second direction along a circumference and including a plurality of second fingers interdigitated with the first fingers;

And the first finger pattern and the second finger pattern form an annular sector shape.
The method of claim 1,

The partial ring formed by the first finger pattern and the second finger pattern is a partial ring of an eight-membered circle.
The method of claim 1,

The partial ring formed by the first finger pattern and the second finger pattern is a partial ring of a quadrant.
The method of claim 1,

The touch panel,

A third finger pattern comprising a plurality of third fingers disposed along a center around the circular substrate;

A fourth finger pattern comprising a plurality of fourth fingers interdigitated with the third fingers;

And the third finger pattern and the fourth finger pattern form an annular sector shape of an eight-quadrant.
The method of claim 4, wherein

The partial ring shape formed by the first finger pattern and the second finger pattern is a partial ring shape of an eight-membered circle.

The partial ring of the eighth circle formed by the first finger pattern and the second finger pattern and the partial ring of the eighth circle formed by the third finger pattern and the fourth finger pattern form a partial ring of the quadrant. .
The method of claim 1,

The touch panel,

The touch panel further comprises a fan pattern located in the center of the partial annular.
The method of claim 6,

The fan pattern is a fan panel in which the central circle of the partial ring is divided into n equal parts (n is a natural number).
Circular substrates;

A first A finger extending in a first direction along the circumference and disposed in the center direction at the circumference, and a first B finger extending in the second direction along the circumference and disposed in the center direction at the circumference. pattern;

A second pattern each extending in the second direction and interdigitated with the A fingers, the second pattern including a plurality of second fingers disposed in a center direction at a circumference thereof;

A third pattern extending in the first direction and interdigitated with the B-th fingers, the third pattern including a plurality of third finger patterns disposed around the center in a circumferential direction;

The first pattern, the second pattern, and the third pattern form a partial ring shape.
The method of claim 8,

The first finger pattern and the second pattern form a partial ring of a quadrant;

And the second finger pattern and the third pattern form a partial ring of quadrants.
The method of claim 8,

The first finger pattern, the second finger pattern and the third finger pattern form a semicircular partial ring.
The method of claim 8,

The touch panel,

A plurality of first a finger patterns extending in the first direction from each other and the first a finger pattern disposed in the center direction, and each of the second a finger patterns extending in the second direction from the first direction A first a pattern including a plurality of second aa finger patterns;

A second a pattern each extending in the second direction and interdigitated with the first a finger patterns, the second a pattern including a plurality of second a finger patterns disposed around the center in a circumferential direction;

A third a pattern extending in the first direction and interdigitated with the second a finger patterns, the third a pattern including a plurality of third a finger patterns disposed around the center in a circumferential direction;

The first a pattern, the second a pattern, and the third a pattern form a partial annular shape, and are located in the hollow of the partial annular shape formed by the first pattern, the second pattern, and the third pattern. Touch panel.
The method of claim 11,

The touch panel

The touch panel further comprises a fan-shaped pattern located in the hollow of the partial annular formed by the first pattern, the second pattern and the second pattern.
The method of claim 12,

The fan pattern is a fan panel in which the central circle of the partial ring is divided into n equal parts (n is a natural number).