TWI502454B - Touch sensor panel - Google Patents

Description

Touch sensing panel

The invention relates to a touch sensing panel with improved sensitivity and a manufacturing method thereof, in particular to more accurately determining a touch position by using an electrode of a given area, reducing the number of required channels, reducing the influence of noise, and improving the touch feeling of easy readability. Test panel.

With the widespread use of mobile phones with touch screens and the popularity of various smart phones, the research on touch sensing technology has been very active.

As the most representative touch sensing device, the touch screen is classified into a resistive film method, a capacitive method, an ultrasonic method, and an infrared method according to its working mode. Among them, the capacitive touch screen has good performance. Durability, long life, support for multi-touch functions, and its application range has recently expanded.

The capacitive touch screen senses the touch position by a change in capacitance caused by a user's touch applied to the front of the display window. The capacitive touch screen operates due to a change in capacitance caused by a user's touch. Therefore, if a stylus is used for touch, it is recognized as a non-capacitance change, and a touch cannot be recognized.

In order to appropriately sense the change in capacitance, the structure of the touch sensing panel of the capacitive touch screen is particularly important, and a panel structure that can sense a touch input such as a stylus pen or a nail with little change in capacitance is required.

In addition, when the touch is required, the touch sensing signal is not distorted to accurately determine the touch sensing panel desired by the user.

A general electrode structure for sensing multi-touch is an electrode pattern having a two-layer structure composed of electrode lines arranged in the X-axis direction and electrode lines arranged in the Y-axis direction in each layer. The electrode pattern of the two-layer structure requires electrode patterns to be formed in each layer and it is necessary to bond the layers, and therefore, the process is complicated and the manufacturing cost is high. Therefore, the inventors have developed an electrode pattern capable of performing multi-touch even when an electrode pattern of a single layer structure is used. Since the electrode pattern of the single-layer structure is narrowed between the adjacent electrodes or the internal wires, if etching or poor flow occurs in the manufacturing process stage, the electrodes connected to the different channels are short-circuited to each other, resulting in product defects. If the pitch between the electrodes is increased to reduce the product defect caused by the short circuit, the pattern exposure phenomenon caused by the difference in transparency between the etched portion and the unetched portion occurs, and the legibility is lowered, and therefore, a solution is required.

Accordingly, the present invention is directed to a touch sensing panel and a method of fabricating the same that can substantially overcome the deficiencies and shortcomings of the related art.

An object of the present invention is to provide a touch sensing panel capable of improving a touch recognition rate even if a change in capacitance caused by a user's touch is small.

Another object of the present invention is to provide a touch sensing panel that can increase the actual sensing area relative to a given number of electrode channels.

It is still another object of the present invention to provide a touch sensing panel that does not distort a signal and increases linearity.

Still another object of the present invention is to provide an accurate recognition of a plurality of touch inputs, which is resistant to impurities. A powerful touch sensing panel.

It is still another object of the present invention to provide a touch that reduces short circuit of electrodes connected to different channels caused by poor etching or different flow in order to reduce product defects and improve readability due to poor transparency between electrodes and non-electrodes. Sensing panel.

The additional features and advantages of the invention will be set forth in the description in the appended claims appended claims. These advantages of the invention will be obtained or attained by the structure illustrated in the appended claims.

The touch sensing panel of the present invention includes: a touch detection area formed in a single layer on one side of the substrate and forming a plurality of sensing regions that are changed by a user's touch capacitance; and a wire region located on one side of the substrate and It is disposed outside the touch detection area. The touch detection area includes: a plurality of vertical electrodes extending into the wire area and arranged along a plurality of vertical axes, wherein each vertical electrode comprises a plurality of sensing sectors; a plurality of patches arranged adjacent to the And a plurality of vertical electrodes, and the patches are made of a conductive material, and each of the patches forms a part of one of the plurality of horizontal electrodes arranged along the plurality of horizontal axes; and the plurality of dummy electrodes are insulated from each other And electrically insulated from the vertical electrodes and at least a portion of the patches. The horizontal electrode includes first and second horizontal electrodes arranged along a first horizontal axis. The vertical electrodes include a first vertical electrode having a plurality of sensing sectors including a first sensing sector, the first sensing sector being disposed on a first patch of the first horizontal electrode Between the second patch and the second patch, a first sensing region is formed with the first patch, and a second sensing region is formed with the second patch. The first and second patches are adjacent to each other and have a portion opposite. At least a portion of the first and second sensing regions overlap.

According to the present invention, the touch sensing panel can provide high sensing resolution even if the number of channels set is limited and the anti-noise capability is strong. Moreover, since the touch position can be determined more accurately, the linearity can be improved. The touch sensing panel of the present invention can improve the readability and can significantly improve the defect rate caused by the short circuit.

The above general description and the following detailed description are merely illustrative and are provided to provide a more detailed description of the claimed invention.

50‧‧‧Partial areas

100‧‧‧ touch sensing panel

110‧‧‧Substrate

112‧‧‧ protective glass cover

120‧‧‧Touch detection area

130‧‧‧Wire area

135‧‧ ‧ busbar

141‧‧‧Extension line

143‧‧‧ Extension cord

145‧‧‧Extension line

151‧‧‧Segment electrode

152‧‧‧Segment electrode

153‧‧‧Segment electrode

154‧‧‧Segment electrode

155‧‧‧Segment electrode

156‧‧‧Segment electrode

157‧‧‧Segment electrode

158‧‧‧Segment electrode

161‧‧‧First split electrode

162‧‧‧Second split electrode

166‧‧‧First sensing sector

167‧‧‧Second sensing sector

171‧‧‧First sensing area

172‧‧‧Second sensing area

173‧‧‧ third sensing area

174‧‧‧fourth sensing area

200‧‧‧ touch sensing panel

220‧‧‧Touch detection area

235‧‧‧ channel

241‧‧‧Extension line

243‧‧‧Extension line

245‧‧‧Extension line

251‧‧‧Segment electrode

252‧‧‧Segment electrode

253‧‧‧Segment electrode

254‧‧‧Segment electrode

255‧‧‧Segment electrode

256‧‧‧Segment electrode

257‧‧‧Segment electrode

258‧‧‧Segment electrode

270‧‧‧Sensing sector

280‧‧‧Partial areas

281‧‧‧First sensing area

282‧‧‧Second sensing area

283‧‧‧ Third sensing area

284‧‧‧4th sensing area

285‧‧‧ Fifth sensing area

286‧‧‧ Sixth sensing area

290‧‧‧any Y-axis

310‧‧‧Sensing area

315‧‧‧ separated lines

320‧‧‧Partial areas

331‧‧‧First sensing area

332‧‧‧Second sensing area

333‧‧‧ Third sensing area

334‧‧‧fourth sensing area

340‧‧‧Sensing sector

410‧‧‧Center horizontal axis

420‧‧‧Center horizontal axis

431‧‧‧ Patch

432‧‧‧ Patch

433‧‧‧ Patch

434‧‧‧ Patch

441‧‧‧ area

442‧‧‧ area

443‧‧‧Area

444‧‧‧Area

510‧‧‧ digital device

515‧‧‧ Bonding Department

520‧‧‧Air gap

530‧‧‧Touch sensing panel

540‧‧‧mask layer

541‧‧‧Substrate

543‧‧‧Electrical thin layer

545‧‧‧ wire

547‧‧‧Transparent adhesive layer

560‧‧‧Touch detection area

570‧‧‧External substrate

900‧‧‧Partial areas

902a‧‧‧ Extension cord

902b‧‧‧Extension line

903a‧‧‧Extension line

903b‧‧‧Extension line

904a‧‧‧Extension line

904b‧‧‧Extension line

905a‧‧‧Extension line

905b‧‧‧Extension line

10A‧‧‧First horizontal electrode set

10B‧‧‧Second horizontal electrode set

11A~15A‧‧‧ wire

11B~15B‧‧‧Wire

21A~24A‧‧‧ wire

21B~24B‧‧‧Wire

11a, 12a, 13a, 14a, 15a‧‧‧ horizontal electrodes

11b, 12b, 13b, 14b, 15b‧‧‧ horizontal electrodes

21a~24a‧‧‧ horizontal electrode

21b~24b‧‧‧ horizontal electrode

31a‧‧‧Horizontal electrode

31b‧‧‧Horizontal electrode

32a‧‧‧ horizontal electrode

32b‧‧‧ horizontal electrode

33a‧‧‧ horizontal electrode

33b‧‧‧ horizontal electrode

41a‧‧‧Horizontal electrode

41b‧‧‧Horizontal electrode

42a‧‧‧ horizontal electrode

42b‧‧‧ horizontal electrode

43a‧‧‧ horizontal electrode

43b‧‧‧Horizontal electrode

51a‧‧‧Horizontal electrode

51b‧‧‧Horizontal electrode

52a‧‧‧Horizontal electrode

52b‧‧‧ horizontal electrode

53a‧‧‧ horizontal electrode

53b‧‧‧ horizontal electrode

A‧‧‧ position

B‧‧‧ position

C1~C8‧‧‧ wire

C11~C18‧‧‧ vertical electrode

C21~C28‧‧‧ vertical electrode

C31‧‧‧Vertical electrode

C32‧‧‧Vertical electrode

C33‧‧‧Vertical electrode

C34‧‧‧Vertical electrode

C35‧‧‧Vertical electrode

C36‧‧‧Vertical electrode

C41‧‧‧Vertical electrode

C42‧‧‧Vertical electrode

C43‧‧‧Vertical electrode

C44‧‧‧Vertical electrode

C45‧‧‧Vertical electrode

C46‧‧‧Vertical electrode

C47‧‧‧Vertical electrode

C48‧‧‧Vertical electrode

C51‧‧‧Vertical electrode

C52‧‧‧Vertical electrode

C53‧‧‧Vertical electrode

C54‧‧‧Vertical electrode

C55‧‧‧Vertical electrode

C56‧‧‧Vertical electrode

C57‧‧‧Vertical electrode

C58‧‧‧Vertical electrode

C101‧‧‧ channel

C102‧‧‧ channel

C103‧‧‧ channel

C104‧‧‧ channel

C105‧‧‧ channel

CC1‧‧‧ wire

CC3‧‧‧ wire

CC5‧‧‧ wire

CC7‧‧‧ wire

X1~X8‧‧‧ horizontal position

Y1~Y8‧‧‧ vertical position

Width of d1‧‧‧

D2‧‧‧Width

1 is a partial schematic view of a touch sensing panel according to an embodiment of the present invention; FIG. 2 is a schematic view of various embodiments of the present invention having a split electrode; FIG. 3 is a schematic view of another embodiment of the present invention having a vertical electrode; 1 is an enlarged schematic view of a portion of a region in which a plurality of sensing regions are formed; FIG. 5 is a dynamic view of mutual capacitance which can be confirmed from a cross section of a partial region of FIG. 1. FIG. 6 is an enlarged view of a partial region of FIG. 1. FIG. A partial schematic view of a touch sensing panel according to another embodiment of the invention; FIG. 8 is an enlarged view showing a plurality of sensing regions formed in a partial region of FIG. 7; and FIG. 9 is an enlarged view of a partial region 280 of FIG. FIG. 10 is a partial schematic view of a touch sensing panel according to another embodiment of the present invention; FIG. 11 is an enlarged partial view of a panel of FIG. 10; FIG. 12 is a touch of another embodiment of the present invention; a partial schematic view of the sensing panel; 13 is a partial schematic view of a touch sensing panel according to another embodiment of the present invention; FIG. 14 is a top view of a panel showing a linear concept; and FIG. 15 is a touch sensing including a mask layer according to another embodiment of the present invention. Panel structure diagram.

The accompanying drawings, which are incorporated in FIG

The present invention relates to a touch sensing panel applied to a touch sensing device such as a touch panel or a touch screen. The touch sensing device refers to a device that senses a user's touch occurring at a specific position overlapping on a display screen or independently of a panel separately provided on the display screen. The touch information and the touch position information acquired at this time are used for the operation control and screen operation of the computer system equipped with the touch sensing device. The touch sensing device of the present invention can be mounted or attached to a digital device, and the digital device includes a desktop computer, a notebook computer, a tablet computer, a vending machine with a large display, a mobile communication terminal, a smart phone, and a smart writing. Smart pad, digital broadcast receiver, Personal Digital Assitants (PDA), Portable Multimedia Player (PMP), navigation device, e-book reader, etc.

The touch sensing panel described in this specification is not only used as a mutual capacitance multi-touch panel, but also in a self-capacitance sensing panel or a single-point touch panel. In addition, an orthogonal array of horizontal electrodes and vertical electrodes that can sense horizontal and vertical positions is also described, but electrodes may be arranged in a diagonal, sector, concentric, three-dimensional, and arbitrary directions.

In the terms used in this specification (including the scope of the patent application), "adjacent (adjacent) may be used in the case where there are no other elements (except the boundary area) among two adjacent elements. "Neighboring" refers to an element that is not disposed between adjacent elements and is not disposed in the same element. However, other elements may be provided. For example, in the case of "adjacent vertical electrodes", other vertical electrodes may not be disposed between adjacent vertical electrodes, but horizontal electrodes may be provided. In addition, "the horizontal electrodes are adjacent to the vertical electrodes" In the case, there are no horizontal electrodes and vertical electrodes between adjacent horizontal electrodes and vertical electrodes, but other elements such as internal electrodes may exist.

"Partially relative" means that two opposing elements are adjacent or adjacent, but are not exactly aligned with each other on the virtual axis. For example (hereinafter, any electrode patches A and B are assumed), in the case where the patches A and B are opposed, the orthographic projections of the patches A and B on the axis perpendicular to the axes of the through patches A and B At least partially overlapping situations. The case where a part of the patches A and B oppose each other means that a part of the orthogonal projections of the patches A and B overlap each other.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a partial structural view of a touch sensing panel according to an embodiment of the present invention; FIG. 2 is a schematic view showing various embodiments of a segmented electrode according to the present invention, which is an enlarged view of a partial area of FIG. 1; FIG. 4 is an enlarged view of a portion of the region of FIG. 1 in which a plurality of sensing regions are formed; FIG. 5 is an enlarged view of a portion of the region of FIG. Capacitance dynamic diagram; Fig. 6 is an enlarged view of a partial area of Fig. 1.

In the present specification, there is a portion in the drawing that is exaggerated and enlarged to clearly indicate the boundary region.

As shown in FIG. 1 , the touch sensing panel 100 includes a plurality of overlapping sensations arranged on the substrate 110 a touch detection area 120 of the measurement area, a lead area 130 provided outside the touch detection area 120, and a sensing electrode (a plurality of vertical electrodes C11, C12, C13, ..., C18 and a plurality of horizontal electrodes) provided on the touch detection area 120 11a, 12a, 13a..., 11b, 12b, 13b.

The "sensing area" used in the present specification does not need to be physically and electrically separated, but refers to an area in which the static capacitance is changed by the user's touch input. Therefore, the sensing area can be defined in various forms.

The touch detection area 120 is an area for setting a sensing electrode that senses a touch position on the substrate 100. The wire area 130 refers to an area on the substrate 100 other than the touch detection area 120. A plurality of wires (ie, bus bars) 135 may be disposed in the wire region 130. The plurality of wires 135 connect the electrodes of the touch detection area 120 and the touch sensing circuit portion (not shown). The touch sensing circuit portion is for sensing and determining a touch position in the touch detection area 120 by a change in capacitance caused by a user's touch. The sensing electrodes can be provided with extension wires for electrical connection. Such an extension line can extend into the wire area 130.

In Fig. 1, the wires C1 to C8 connected to the respective vertical electrodes C11 to C18 and the wires 11A to 15A and 11B to 15B connected to the respective horizontal electrodes 11a to 15a and 11b to 15b are included. A plurality of wires 135 can function as a channel. A plurality of wires 135 may be formed on the same layer as the sensing electrodes. In the embodiment, the plurality of wires 135 are disposed on different layers from the horizontal electrodes 11a-15a and 11b-15b or the vertical electrodes C11-C18, and pass through the plurality of vias and the horizontal electrodes 11a-15a and 11b-15b and the vertical electrodes. C11~C18 connection. In addition, the plurality of wires 135 may be disposed in the same layer as the horizontal electrodes 11a to 15a and 11b to 15b or the vertical electrodes C11 to C18. In this case, the wires 135 and the horizontal electrodes 11a to 15a and 11b to 15b may be crossed or An insulating material is applied to the positions of the wires 135 and the vertical electrodes C11 to C18 to insulate the horizontal electrodes 11a to 15a and 11b to 15b or the vertical electrodes C11 to C18 and the wires.

In FIG. 1, a plurality of vertical electrodes C11 to C18 are arranged in a plurality of horizontal positions X1 to X8 in the touch detection area 120 to form a sensing area. In addition, the vertical electrodes C11 to C18 may also form a sensing region together with other electrodes. The touch sensing circuit portion can sense the position according to the x-axis of the touch using the vertical electrodes C11 to C18. Each of the vertical electrodes C11 to C18 may further include an extension line 141 extending from the wire region 130. In the embodiment shown in Fig. 1, all of the extension lines 141 of the vertical electrodes C11 to C18 are extended to the wire area on the lower side of the panel. In another embodiment, a portion of the extension line 141 of the vertical electrodes C11 to C18 may be extended to a wire area on the upper side of the panel to secure a space. As shown in FIG. 1, each of the vertical electrodes C11 to C18 can be connected to different wires through extension lines. For example, the vertical electrodes C11 to C18 may be connected to the wires C1 to C8, respectively. In another embodiment of the present invention, the vertical electrodes C11 to C18 of a specific position may be electrically connected to each other (as shown in FIG. 3).

The plurality of vertical electrodes C11 to C18 in Fig. 1 are shown in a bar shape extending in the vertical direction, but a certain pattern may be repeatedly formed.

The horizontal electrodes 11a, 12a, 13a, ..., 11b, 12b, 13b, ... in FIG. 1 are arranged at a plurality of horizontal positions Y1, Y2, Y3, Y4, ... of the touch detection area 120 to form a sensing area. Further, the horizontal electrodes 11a to 15a and 11b to 15b may form a sensing region together with other electrodes. The touch sensing circuit portion can sense the position according to the y-axis of the touch using the horizontal electrodes 11a to 15a and 11b to 15b. Preferably, the horizontal electrodes 11a to 15a and 11b to 15b are provided adjacent to the vertical electrodes C11 to C18 in the same layer as the vertical electrodes C11 to C18. Each of the horizontal electrodes 11a to 15a and 11b to 15b may include a divided electrode at a specific position electrically connected, and extension wires 143 and 145 electrically connecting the divided electrodes in the wire region 130. In the present invention, the split electrode at a specific position means that it is actually aligned with a certain horizontal axis. In other words, the horizontal axis of the center of a certain divided electrode that penetrates a certain horizontal electrode also penetrates the center of the remaining divided electrodes. In the present invention, an extension cord 143 and 145 may be referred to as internal wires, and indicate elements different from the horizontal electrodes 11a to 15a and 11b to 15b. The inner leads 143, 145 can be divided into a first inner lead that is mostly disposed in the touch detection area 120 and a second inner lead that is mostly disposed in the lead area 130. The split electrodes may be formed simultaneously with the inner leads 143, 145 or may be formed simultaneously with the first inner lead portions.

The plurality of vertical electrodes C11 to C18 and the plurality of horizontal electrodes 11a to 15a and 11b to 15b may be formed of a conductive transparent material such as ITO (Indium Tin Oxide), ZnO, IZO, or CNT. The plurality of vertical electrodes C11 to C18 and the plurality of horizontal electrodes 11a to 15a and 11b to 15b may be formed of the same material. A part of the extension wires of the horizontal resistors 11a to 15a and 11b to 15b may be formed of a metal material to improve conductivity or to increase thermal resistance when connected to an external wire through a via. For example, an extension line (first internal lead portion) provided in the touch detection area 120 is formed of a conductive transparent material, and an extension line (second internal lead portion) provided outside the touch detection area 120 may be formed of silver or copper or the like. .

The substrate 110 in FIG. 1 can be a transparent window. The transparent window may be made of a high-stiffness material such as tempered glass or acrylic resin, or a rigid PET (polyethylene terephthalate), PC (polycarbonate), PES (polyether sulfone), PI (polyimide), PMMA (PolyMethly Metha Acrylate) or the like which can be used for a flexible display or the like. form. The transparent window may function to maintain the shape of the touch sensing panel 100, and at least a portion of the area is exposed to the outside to accept a touch of a conductive object such as a user's body or a stylus. At this time, a protective layer (not shown) may be selectively added to prevent the transparent window from being damaged or damaged. It is to be noted that the term "touch" as used in this specification means not only the case of direct touch to the touch receiving surface but also the case where the conductive object is very close to the receiving surface. That is, the touch sensing panel of the present invention and the touch input feeling using the touch sensing panel described above The measuring device is to be understood as a panel or device having the function of recognizing a touch of a conductive substance or a conductive substance within a certain distance.

In this embodiment, the sensing electrodes (the plurality of horizontal electrodes 11a-15a and 11b-15b and the vertical electrodes C11-C18) are formed on different substrates, and are adhered by an adhesion material such as an OCA (optical clear adhesive). Electrode and transparent window. That is, a pattern of an ITO thin film material containing ITO is formed on one or both sides of polyethylene terephthalate (PET) or thin film glass, and the formed ITO thin film is attached to a transparent window to form a sensing. electrode. As an embodiment in which a pattern is formed on both surfaces of an ITO film, a vertical electrode pattern is formed on one surface of the film, and a horizontal electrode pattern is formed on the other surface of the film. At this time, the ITO film was attached to the transparent window to provide a vertical electrode between the transparent window and the film.

In addition, a sensing electrode (a plurality of horizontal electrodes 11a-15a and 11b-15b and a plurality of vertical electrodes C11-C18) are directly formed on one surface of the transparent window 110, so that the multi-level electrodes 11a-15a and 11b-15b are The vertical electrodes C11 to C18 are integrated with the transparent window 110. Therefore, the sensing electrodes having high defect rates in the manufacturing process of the touch sensing panel (horizontal electrodes 11a to 15a and 11b to 15b and a plurality of vertical electrodes C11) can be omitted. ~C18) and the attachment process of the transparent window 110, thereby simplifying the manufacturing process. By simplifying the procedure, the production cost of the touch sensing panel can be reduced. Moreover, the thickness of the electronic device to which these integrally formed touch sensing panels are applied can also be reduced.

In the present specification, the integrally formed or integrated description means that there is no other bonding layer such as OCA, and the sensing electrode 122 is directly formed on one surface of the transparent window 110. Instead of forming the sensing electrode 122 on a separate member in the form of an ITO film, it is attached to the transparent window 110, and the sensing electrode is directly formed on the transparent window 110 by sputtering, ion plating, etching, or the like. That is, it does not contain transparency during the formation process. The method of attaching the window 110 forms an integrated method. Therefore, not only the pattern of the sensing electrodes is directly formed on the exposed side of the transparent window, but also the surface of the transparent window coated with the separate layer of the anti-scattering film, the transparent resin or the like is formed by the above method. concept. In an embodiment, in addition to the case where all of the sensing electrodes are integrally formed on the substrate (transparent window), they may be integrally formed by a separate process. For example, a vertical electrode is formed on one side of the transparent window, and after the insulating layer is coated thereon, a horizontal electrode is formed thereon. In another embodiment, only a portion of the sensing electrodes are formed in one piece. For example, only the vertical electrode is integrally formed on the transparent window, and after the horizontal electrode is formed on a separate member in the form of an ITO film, the ITO film is attached to the transparent window.

In one embodiment, all of the sensing electrodes are not integrally formed on the substrate (transparent window) 110, but are formed integrally by a separate process independent of the transparent window 110. For example, the vertical electrodes C11 to C18 are formed on one surface of the transparent window 110, and after the insulating layer is applied thereon, the horizontal electrodes 11a to 15a and 11b to 15b are formed thereon. In another embodiment, only a portion of the sensing electrodes are formed in one piece. For example, only the vertical electrodes C11 to C18 are integrally formed in the transparent window 110, and the horizontal electrodes 11a to 15a and 11b to 15b are formed in separate members in the form of an ITO film, and the ITO film is attached to the transparent window 110.

The vertical electrodes C11 to C18 may be divided into one or more groups, and at least one pair of vertical electrodes belonging to each group may be adjacent to the other pair of vertical electrodes. If the panel 100 of the present invention operates as a mutual capacitance panel, the vertical electrode sensing signals belonging to the same group may be overlapped or combined to determine an accurate position. Therefore, the vertical electrodes are adjacent to each other. In particular, as shown in FIG. 1, the vertical electrodes C11 to C18 are divided into four groups, each group including a pair of vertical electrodes, and a pair of vertical electrodes belonging to any group are adjacent to a pair of vertical electrodes belonging to other groups. Assume. In another embodiment, the vertical electrodes C11 to C18 may be spaced apart by a certain distance to accurately determine the horizontal position.

If the vertical electrodes C11 to C18 are set as shown in FIG. 1, the vertical electrodes C11 to C18 connected to the respective wires C1 to C8 can be electrically insulated from each other. In another embodiment, as shown in FIG. 3, adjacent vertical electrodes with a pair of split electrodes disposed therebetween may be electrically connected to reduce the number of channels required. That is, the vertical electrodes C12 and C13 are electrically connected, the vertical electrodes C14 and C15 are electrically connected, and the vertical electrodes C16 and C17 are electrically connected. At this time, the number of channels is reduced from 8 (C1 to C8) to 5 (C101 to C105). Since a part of the divided electrode disposed between the adjacent coupled vertical electrodes is a separate horizontal electrode, an accurate judgment is made when determining the touch position. At the same time, in the overlapping sensing region (which will be described below), one sensing region is formed by one segment electrode 14a and a portion of the vertical electrode C15 adjacent thereto, and one segment electrode 14a and A portion of the vertical electrode C16 adjacent to the vertical electrode C15 forms another sensing region, and therefore, there is no problem in judging the position of the overlapping sensing region.

At least two of the horizontal electrodes 11a to 15a and 11b to 15b of the present invention may be provided in a form in which a horizontal axis at an arbitrary position can pass. The partial region 50 of the touch detection region 120 of FIGS. 1 and 2 includes the levels of the divided electrodes 151, 153, 155, and 157 disposed at the Y1 position of the Y axis and the odd Xth axis positions X1, X3, X5, and X7. The electrode 11a and the horizontal electrode 11b including the divided electrodes 152, 154, 156, and 158 provided at the Y1 position and the even-numbered X-axis positions X2, X4, X6, and X8 share the Y1 axis. In the present embodiment, the horizontal horizontal axis (the line dividing the divided electrodes) of the horizontal electrode 11a and the horizontal electrode 11b are aligned. That is, the orthogonal projection of the horizontal electrode 11a of the Y-axis and the orthogonal projection of the horizontal electrode 11b actually overlap.

As shown in (a) of FIG. 2 in which the partial region 50 of FIG. 1 is enlarged, the horizontal electrode can be divided into The horizontal electrodes 11a, 12a, 13a, ... of the first group 10A adjacent to the left side of the vertical electrode and the horizontal electrodes 11b, 12b, 13b, ... of the second group 10B adjacent to the right side of the vertical electrode. As shown in the embodiment of Fig. 1, the divided electrodes of the horizontal electrodes 11a to 15a and 11b to 15b may be provided at a certain interval. Without being limited thereto, as shown in another embodiment of (b) of FIG. 2, two of the divided electrodes belonging to the same horizontal electrode are adjacent to each other, and may also be provided on one panel at the same time. The situation and the situation of the adjacent. In another embodiment, the first set 10A and the second set 10B can be electrically connected to reduce the number of external wires.

When the panel 100 of the present invention operates as a mutual capacitance panel, a drive signal is applied to one or more of the vertical electrodes C11 to C18 and the first and second horizontal electrode groups 10A and 10B. At this time, it may be formed between adjacent row regions or column regions of peripheral electric field lines (leakage flux). Therefore, a partial fan-shaped pair of the divided electrode and the vertical electrode adjacent to or close to the divided electrode can form a sensing region where the charge can be coupled from the driving region to the sensing region. If a finger touches one of the sensing regions, a portion of the surrounding electric field lines outside the cover of the panel 100 is broken by the finger, thereby reducing the amount of charge combined in the sensing region. The reduction in the amount of these combined charges can be used as a basis for determining the image based on the touch. In the case of a mutual capacitance panel, there is a possibility that a separate reference ground is not required.

In the case where the panel of the present invention is a mutual capacitance panel (hereinafter, unless otherwise specified as a "self-capacitance panel", it is assumed to be a mutual capacitance panel), assuming that the first and second horizontal electrode groups 10A, 10B are applied. The driving electrodes of the driving signals, and the plurality of vertical electrodes c11 to c18 are sensing electrodes that sense the sensing signals, and are subject to the following in the following.

4 is a case where the panel of the present invention is a mutual capacitance panel, and the plurality of sensing regions are formed in FIG. A partially enlarged schematic view of a region 151 of the domain.

In the case where the panel 100 of the present invention is a mutual capacitance panel, a certain sector of one divided electrode or vertical electrode may be a part of two or more types of sensing regions. The touch sensing circuit portion (not shown) of the present invention extracts and removes each horizontal position component and vertical position component from the overlapping sensing region of the common partial region to accurately determine the touched position.

As shown in FIG. 4, the first sensing region 171 of the plurality of sensing regions is included in the first sensing electrode 161 and the vertical electrode C15 included in the corresponding region 171 in the horizontal electrode 14a. The fan shape 166 is formed. The second sensing region 172 in the sensing region is constituted by the second sensing fan 167 included in the corresponding region 172 of the first dividing electrode 161 and the vertical electrode C16. The third sensing region 173 in the sensing region is constituted by the second dividing electrode 162 and the second sensing fan 167 of the horizontal electrode 14b corresponding to the corresponding region 173. The fourth sensing region 174 in the sensing region is composed of the second dividing electrode 162 and the first sensing fan 166. The first and fourth sensing regions 171, 174 share the first sensing sector if the first sensing sector is correct. The first and second divided electrodes 161 and 162 and the first and second sensing sectors 166 and 167 are used to extract a horizontal position component and a vertical position component of the touch position. Each of the sensing regions includes an overlapping region, and therefore, the touch sensing circuit portion more accurately determines the position of the touched object by combining the mutual capacitance changes sensed by the respective sensing sectors (vertical electrodes C15 and C16).

In FIG. 4, for a plurality of sensing regions including overlapping regions (for example, the first to fourth sensing regions 171 to 174, only the divided electrodes and the sensing segments arranged adjacent to each other in the horizontal direction and sequentially disposed are exemplarily illustrated. However, depending on the material, shape, appearance, and installation state of the electrode, the upper and lower adjacent regions, the diagonal direction region, and the region in which the divided electrodes are provided in the middle of the same row can also be the sensing regions.

FIG. 5 is a mutual capacitance floating diagram that can be confirmed from a section T-T' of a partial region 151 of the sensing detection region 120 of FIG. 5 sequentially shows the first divided electrode 161 of the horizontal electrode 13a disposed in the overlap sensing region 151, the first sensing sector 166 of the vertical electrode C15, the second sensing sector 167 of the vertical electrode C16, and the horizontal electrode 13b. The cross section of the divided electrode 162 indicates the amount of change in mutual capacitance sensed in each of the sensing sectors according to the position of the finger.

As shown in FIG. 5, a cover glass cover 112 as a substrate is provided on the first and second divided electrodes 161 and 162 and the first and second sensing sectors 166 and 168 in the upper portion of each electrode. It is assumed that the first and second divided electrodes 161, 162 are driving electrodes, and the first and second sensing sectors 166, 168 are sensing electrodes.

(a) and (b) of FIG. 5 are cases where a touch object (for example, a finger) is touched between the first driving electrode 161 and the first sensing electrode 167. As shown in (a) of FIG. 5, when a driving signal is applied to the first driving electrode 161, a mutual capacitance change amount of "100" is observed in the adjacent first sensing electrode 166, and adjacent to the first The mutual capacitance change amount of "20" is sensed in the second sensing electrode 167. As shown in (b) of FIG. 5, the driving signal can be applied to the second driving electrode 162 immediately after being applied to the first driving electrode 161. When a driving signal is applied to the second driving electrode 162 at a time different from the application of the driving signal to the first driving electrode 161 (the time difference is very small, so that the finger is at the same position), the first sensing electrode 166 is observed near the finger. The mutual capacitance change amount to "5", and the mutual capacitance change amount does not occur at the second sensing electrode 167 far from the finger.

(c) of FIG. 5 is a case where the finger is located at the first sensing electrode 166 which is closer to the second sensing electrode 167, and the overlapping means that a driving signal is applied to the first and second driving electrodes with a certain time difference, thereby causing a sense of The amount observed by the electrode. As shown in Figure 5 (c) As shown, a mutual capacitance change amount of "60" is observed in the first sensing electrode 166, and a mutual capacitance change amount of "30" is sensed in the second sensing electrode 167. The closer the touch object is to the side of a certain driving electrode, the larger the mutual capacitance change sensed by the sensing electrode on the approaching side.

(d) of FIG. 5 is a case where the finger is located between the second sensing electrode 167 and the second driving electrode 162, and the overlap indicates the amount of mutual capacitance change observed at the first and second sensing electrodes. As shown in (d) of FIG. 5, the mutual capacitance change amount of "105" is observed in the second sensing electrode 167 near the finger, and the "20" mutual observation is observed in the first sensing electrode 166 far from the finger. The amount of capacitance change.

As shown in the embodiment of FIG. 5, the touch sensing resolution can be improved due to the overlapping sensing regions, and the linearity can be improved.

In order to accurately determine the recognition rate of the user's touch position, the linearity level can be confirmed. Fig. 14 is a view showing linearity. The linearity indicates the degree of smoothness of the diagonal position pair when the touch is slid along the diagonal as shown in FIG. 14(a). The closer the judgment of the touch position is to the diagonal line, the better. (b) and (c) of FIG. 14 are results of determination of each touch position according to (a) of FIG. 14 , and it is shown that the linearity of (c) of FIG. 14 is better.

In the present embodiment, in order to improve the touch sensing resolution, a driving signal may be randomly applied to each of the horizontal electrodes 11a to 15a and 11b to 15b as needed. For example, after sequentially applying driving signals to the horizontal electrodes 11a to 15a of the first group 10A, driving signals are sequentially applied to the horizontal electrodes 11b to 15b of the second group 10B. In another example, driving signals (11a electrodes, 11b electrodes, 12a electrodes, 12b electrodes, ...) are sequentially applied to the horizontal electrodes belonging to the same row, or driving signals are sequentially applied to the driving electrodes disposed in the diagonal direction ( 11a, 12b, 13a, 14b...). (should be "in addition to, there are various embodiments")

As shown in FIG. 4, in order to obtain the optimal touch sensitivity of the mutual capacitance panel of the present embodiment, preferably, the area of the first divided electrode 161 of the first sensing region 171 is the same as the area of the first sensing fan 166. The area of the first dividing electrode 161 and the area of the first sensing fan 166 may be different. At this time, the area of the first dividing electrode 161 and the area difference of the first sensing fan 166 may be reduced by increasing the boundary area of the contact. Thereby increasing the leakage electric field. For this reason, the width of each electrode boundary is reduced, a periodic geometric pattern is formed on the vertical electrodes C11 to C18, and the horizontal electrodes 11a to 15a and 11b to 15b are formed to fill the regions formed by the vertical electrodes C11 to C18. The geometric pattern of the vertical electrodes may be triangular and quadrangular in shape.

A plurality of sensing sectors in any one of the vertical electrodes C11 to C18 are electrically connected to each other on the touch detection area 120, and thus, can operate as a sensing electrode. The sensing electrodes must be strong enough to withstand the noise or other signals being received. Representative noise of the touch-sensing panel 100 has noise generated by a driving signal applied to the driving electrodes and noise generated by electrical influences of internal circuits of the digital device to which the touch sensing panel is attached.

The wire that supplies the drive driving signal to the driving electrode is disposed as far as possible from the sensing electrode to reduce the influence of the driving signal noise acting on the vertical electrodes C11 to C18. As an example, as shown in FIGS. 1 and 6, the extension lines 902a, 903a, 904a, and 905a of the first horizontal electrode group 10A adjacent to the left side of the vertical electrode are located on the left side of the first horizontal electrode group 10A. The extension lines 902b, 903b, 904b, and 905b of the second horizontal electrode group 10B adjacent to the right side of the vertical electrode are positioned on the right side of the second horizontal electrode group 10B. At this time, the first and second horizontal electrode groups 10A, 10B can function as a noise shield for the drive signal.

Since the driving electrode can function as a shield for external noise, it is preferable to provide a driving electrode on the outermost side of the substrate. As shown in FIG. 1, a partial electrode of the first horizontal electrode group 10A is disposed on the leftmost side of the substrate, and a partial electrode of the second horizontal electrode group 10B is disposed on the rightmost side of the substrate.

The noise generated by the display can be compensated by the program in the touch controller that resolves the signal sensed by the touch detection area.

In addition, the external impact of the transparent window may change the spacing between the touch detection area and the display, which will result in a slight change in capacitance, resulting in noise, which may be provided between the digital device and the touch sensing panel 100. The mask layer is reduced. The mask layer is described in detail with reference to FIG.

The touch sensing panel 100 can also operate as a self-capacitance panel. In the case where the touch sensing panel 100 operates as a self-capacitance panel, although the reference ground plane is at the rear of the substrate and belongs to the same layer as each electrode, the vertical electrodes C11 to C18 and the first and second horizontal electrodes are passed through the dielectric. When the groups 10A and 10B are separated, they can be formed on other substrates. In the self-capacitance panel, each of the sensing regions has a self-capacitance that is grounded to a reference that is changed by the presence of the touch object. In FIG. 1, the electrodes of the vertical electrodes C11 to C18 and the first and second horizontal electrode groups 10A, 10B can independently sense the self capacitance.

FIG. 7 is a partial schematic structural diagram of a touch sensing panel 200 according to another embodiment of the present invention. Fig. 7 shows a case where at least two of the horizontal electrodes of Fig. 1 pass the horizontal axis at an arbitrary position, and the center horizontal axes of the respective two horizontal electrodes are different. The elements of FIG. 7 corresponding to the elements of FIG. 1 are not described herein.

The touch sensing panel 200 shown in FIG. 7 includes a touch detection area 220 in which a plurality of overlapping sensing areas are arranged on a substrate, and a lead area provided on the outside of the touch detection area 220. A plurality of vertical electrodes C21 to C28 and a plurality of horizontal electrodes 21a, 22a, 23a, 24a, 21b, 22b, 23b, and 24b disposed on the touch detection area 220.

The touch detection area 220 is an area for setting a sensing electrode that senses a touch position on the touch sensing panel. The lead region 130 is a region provided outside the touch detection region 220. The electrodes C21 to C28, 21a, 22a, 23a, 24a, 21b, 22b, 23b, and 24b of the touch detection area 220 and a plurality of wires (bus bars) 235 connected to the touch sensing circuit portion (not shown) may be formed on Wire area 130. The touch sensing circuit portion is configured to sense and determine a touch position in the touch region by a change in capacitance caused by a user's touch. An extension line of the sensing electrode of the touch detection area 220 may be disposed in the wire area 130. Fig. 7 shows wires CC1, CC3, CC5, CC7 connected to the respective vertical electrodes and wires 21A to 24A, 21B to 24B connected to the respective horizontal electrodes. A plurality of wires can function as channels 235. Each of the wires in the wire region 130 may be formed of a metal material. A plurality of wires may be formed in the same layer each. Further, a plurality of wires are provided in layers different from the horizontal electrodes 21a to 24a and 21b to 24b or the vertical electrodes C21 to C28, and are connected to the respective electrodes through vias. Further, a plurality of wires are provided in the same layer as the horizontal electrodes 21a to 24a and 21b to 24b or the vertical electrodes C21 to C28. In this case, an insulating material or the like can be applied to the intersection to prevent unnecessary electrical connection.

In FIG. 7, a plurality of vertical electrodes C21 to C28 are arranged in the touch detection area 120 at a plurality of horizontal positions X1 to X8 to form a sensing area. In addition, one of the plurality of vertical electrodes C21 to C28 may form a sensing region with the other electrodes. The touch sensing circuit portion can sense the position according to the x-axis of the touch using the vertical electrodes C21 to C28.

Each of the vertical electrodes C21 to C28 may further include an extension line 241 in which the guide line region is extended. In Fig. 7, the extension line 241 of the odd-numbered vertical electrodes C21, C23, C25, C27 is extended to the wire area on the lower side of the panel. And the even number of vertical electrodes C22, C24 The extension lines of C26 and C28 are extended to the upper side of the panel (not shown). As shown in FIG. 7, each of the vertical electrodes C21 to C28 is connected to each of the different wires through each of the extension wires. For example, the vertical electrodes C21 and C23 may be connected to the wires CC1 and CC2, respectively.

The plurality of vertical electrodes C21 to C28 in Fig. 7 are shown in a bar shape extending in the vertical direction, but a certain pattern may be repeatedly formed. Such a pattern may be a plurality of protrusions formed on one side of the vertical electrode.

The protrusion may be a polygonal shape of a triangle or a quadrangle (square, trapezoid). The protruding portion may be in the shape of a strip extending in a direction inclined with respect to the horizontal axis. For example, the first protrusion is elongated in the first angular direction and the second protrusion is extended in the second angular direction that is 180 degrees from the first angle. Such first and second protrusions may be repeated in the vertical direction. The capacitance of the projection having such a certain inclination is larger than the capacitance of the projection extending in the horizontal axis direction, thereby improving the touch sensing ratio.

Each of the vertical electrodes C21 to C28 includes a plurality of refractive portions on the other side of the adjacent vertical electrodes. The continuous angle of the plurality of refracting portions may cause repetition of a finite number of columns set in advance. A finite sequence of presets can only have one element (90 degrees or 120 degrees). The elements of the finite sequence arranged in advance may include a first acute angle, 90 degrees, 90 degrees, a first obtuse angle forming a flat angle with the first acute angle, a second obtuse angle, 90 degrees, 90 degrees, and a second acute angle forming a flat angle with the second obtuse angle .

The horizontal electrodes 21b, 21a, 22b, 22a, 23b, 23a, 24b, and 24a of FIG. 7 may be arranged in a plurality of vertical positions Y1, Y2, Y3, Y4, Y5, Y6, Y7, and Y8 on the touch detection area 220. Sensing area. Further, one of the horizontal electrodes 21a to 24a and 21b to 24b may form a sensing region together with the other electrodes. Touch sensing circuit The position according to the y-axis of the touch is sensed by the horizontal electrodes 21a to 24a and 21b to 24b. Preferably, the horizontal electrodes 21a to 24a and 21b to 24b are disposed adjacent to the vertical electrodes C21 to C28 in the same layer as the vertical electrodes C21 to C28. Each of the horizontal electrodes 21a to 24a and 21b to 24b may include a divided electrode at a specific position electrically connected, and extension wires 243 and 245 electrically connecting the divided electrodes in the wire region. Preferably, the split electrode and the extension wires 43, 245 are simultaneously formed.

At least two of the horizontal electrodes 21a to 24a and 21b to 24b of the panel 200 shown in Fig. 7 pass the horizontal axis at an arbitrary position, and the center horizontal axes of the respective two horizontal electrodes are not aligned. As shown in FIG. 7, the horizontal electrode 22a including the divided electrodes 251, 253, 255, and 257 of the Y4 position and the odd-numbered X-axis positions X1, X3, X5, and X7 is included in the Y3 position and the The horizontal electrodes 11b of the divided electrodes 252, 254, 256, and 258 of the even number of X-axis positions X2, X4, X6, and X8 share an arbitrary Y-axis 290. In the present embodiment, the horizontal electrodes 21a to 24a and 21b to 24b are disposed such that the central horizontal axis (the line dividing the divided electrodes) Y4 of the horizontal electrode 22a and the central horizontal axis Y3 of the horizontal electrode 22b are not aligned. In FIG. 7, the horizontal electrodes 21a to 24a and 21b to 24b may be divided into horizontal electrodes 21a, 22a, 23a, ... of the first group 20A adjacent to the left side of the vertical electrodes C21 to C28, and adjacent to the right side of the vertical electrodes. The second group 20B of horizontal electrodes 21b, 22b, 23b.

The horizontal electrodes 21a to 24a and 21b to 24b of the present embodiment may include recessed portions. The depressed portion may have a shape corresponding to a protruding portion of an adjacent vertical electrode. The number of depressed portions of the horizontal electrode may correspond to the length of the horizontal electrode. That is, it can correspond to the number of protrusions of adjacent vertical electrodes.

In the present embodiment, electrodes or wires or the like formed in the touch detection region may be formed in the same layer. Such a single-layer electrode pattern may be caused by poor etching or foreign matter. A short circuit occurs between the electrodes connected to different channels. If the pitch between the electrodes is increased in order to prevent the short circuit, the difference in transparency between the etched portion and the unetched portion (electrode or the like) is lowered in legibility. In order to reduce the defect rate caused by the short circuit and improve the legibility, the touch sensing panel 200 shown in FIG. 7 may further include a plurality of pseudo electrodes.

The plurality of dummy electrodes are electrically insulated from each other and electrically insulated from the plurality of vertical electrodes c21, c22, c23, ... and the plurality of horizontal electrodes 21a, 22a, 23a, ..., 21b, 22b, 23b, ... And the wires are formed on the same layer.

The pseudo electrode of the present embodiment is disposed at a boundary region between adjacent electrodes to lower the etched portions (the horizontal electrodes 21a to 24a and 21b to 24b, the vertical electrodes C21 to C28, and the non-horizontal electrodes 21a to 24a and 21b to The difference in transparency between the portion of the extension of 24b) and the unetched portions (the extension lines of the horizontal electrodes 21a to 24a and 21b to 24b, the vertical electrodes C21 to C28, and the horizontal electrodes 21a to 24a and 21b to 24b) results in an electrode that is visible to the naked eye. The probability of pattern generation and improved readability of the displayed image.

In addition, the pseudo electrode is disposed between the adjacent effective electrodes (level and vertical electrodes), and therefore, in the manufacturing process of the touch sensing panel 200, the short circuit of the effective electrode due to the occurrence of etching failure or different flow is prevented. In the case, it acts as a buffer to short one of the active electrodes and the dummy electrode.

Preferably, a plurality of pseudo electrodes are made of a transparent material, and in particular, in order to improve legibility, it is required to have the same transparency as the level and vertical electrodes. In order to simplify the fabrication process, preferably, the material of the plurality of pseudo electrodes is the same as that of the vertical and horizontal electrodes, and the fabrication procedure is also the same.

If the vertical electrode with a larger area of the horizontal electrode is short-circuited with the electrode of the other channel, the sensing capability of the touch sensing panel 200 is greatly affected. So to simplify production The procedure is to place only the pseudo electrode between adjacent vertical electrodes or between adjacent vertical and horizontal electrodes.

The larger the size of the pseudo electrode is, the smaller the area is. Therefore, in order to maintain the sensing accuracy or the sensing resolution above a certain value, preferably, the area of the pseudo electrode, especially the effective electrode. The width of the pitched pseudo electrode has an upper limit. Preferably, the spacing between the active electrodes is greater than the average size of the foreign matter. When the size of the foreign matter that flows in is relatively uniform, it is preferable to set the size of the foreign matter of any specific probability that is uniform in size to the maximum value of the distance between the effective electrodes. That is, the spacing between the effective electrodes depends on the shape or average width of the vertical or horizontal electrodes, the size of the foreign matter, and the like.

If the spacing between the active electrode and the pseudo electrode is too small, it may cause a short circuit of the adjacent pseudo electrode, and therefore, it is preferable to have a minimum value. Preferably, the above minimum value is 10 μm.

If the spacing between the effective electrode and the pseudo electrode is too large, the readability, the sensing resolution, the sensing accuracy, and the like will be lowered, and therefore, it is preferable to have a maximum value. Preferably, the above maximum value is 50 μm.

The spacing between adjacent pseudo electrodes may depend on one of the shape of the adjacent pseudo-electrode, the average pitch or distribution probability of the inflowing foreign matter, and the process defect rate (etching defect rate).

Fig. 8 is a structural view showing a plurality of sensing regions formed in a partial region of Fig. 7;

In FIG. 8, it is assumed that the panel 200 of the present invention operates as a mutual capacitance touch sensing panel. When a driving signal is applied to the horizontal electrode 23a of FIG. 8, a part of the divided electrode of the horizontal electrode 23a and a portion of the sensing electrode C25 form a first sensing region 281, and is sensed A portion of electrode C26 forms a second sensing region 282. When a driving signal is applied to the horizontal electrode 24b, a portion of the horizontal electrode 24b forms a third sensing region 283 with a portion of the sensing electrode C25, and a fourth sensing region 284 is formed with a portion of the sensing electrode C26. When a driving signal is applied to the horizontal electrode 23b, a portion of the partial divided electrode and the sensing electrode C26 of the horizontal electrode 23b forms a fifth sensing region 285, and a portion of the sensing electrode C25 forms a sixth sensing region 286. If the sensing sector 270 is a portion of the sensing electrode C25, the first, fourth, and sixth sensing regions 281, 284, 286 include a portion or all of the sensing sector 270. By such overlapping sensing regions, the sensing resolution can be improved and the linearity can be improved.

9 is an enlarged view of a partial region 280 of the touch sensing panel 200, which is a top view of a position at which a touch object is acquired.

In FIG. 9, it is assumed that the panel 200 of the present invention operates as a mutual capacitance touch sensing panel. The A position or the B position of FIG. 9 indicates an area touched by a finger or the like. When a driving signal is applied to the horizontal electrode 23a, in the vertical electrode C25 or C26, both the A position and the B position sense the same mutual capacitance reduction. However, when a driving signal is applied to the horizontal electrode 23B, a decrease in the mutual capacitance of a larger value is sensed in the vertical electrode C25 or C26 only when the touch object is located at the A position. That is, the reduction of the drive signal sensing mutual capacitance is applied to the electrodes 23a, 23b, and 24b, respectively, to determine whether or not there is a touch of the touch object at the A position or the B position. Of course, since it is a combination of the respective sensing values, it is also known that the A and B positions are touched by fingers or the like. Although only the positions of A and B are illustrated in the figure, a more accurate position can be determined by the combination of the sensed values of the respective drive signals.

As described above, as shown in the panel of Fig. 9, a large number of Y positions of the touch position can be obtained by a small number of driving electrodes. Therefore, while reducing the number of channels, high resolution is maintained.

FIG. 10 is a partial structural diagram of a touch sensing panel according to another embodiment of the present invention. Fig. 10 particularly shows the case where the vertical electrodes of Fig. 7 are in a triangular pattern. Figure 11 is an enlarged schematic partial view of a portion of the panel of Figure 10.

The panel shown in FIG. 10 includes a plurality of vertical electrodes C31 to C36, first stage horizontal electrodes 31a and 32a, and second group of horizontal electrodes 31b, 32b, and 33b.

The vertical electrode C31 in Fig. 10 is elongated in the vertical direction and forms a triangular pattern on the left side. The vertical electrode C32 is disposed adjacent to the right side of the vertical electrode C31, extends in the vertical direction, and has a triangular pattern on the right side, and is disposed to intersect the pattern of the vertical electrode C31. The remaining vertical electrodes C33 and C35 and C34 and C36 are disposed corresponding to the vertical electrodes C31 or C32.

As shown in FIG. 10, the horizontal electrodes of the first and second groups are arranged in the vertical direction. The horizontal electrodes 31a and 32a of the first group are adjacent to the left side of the triangular pattern forming the odd-numbered vertical electrodes by a certain distance, the horizontal electrodes 31b, 32b and 33b of the second group and the triangular pattern forming the even-numbered vertical electrodes The right side is adjacent to each other at a certain distance. Each of the horizontal electrodes 31a, 32a, 31b, 32b, 33b may include an extension line to electrically connect outside the touch detection area.

Figure 11 shows a plurality of overlapping sensing regions that may be formed in a partial region 320 of the panel as shown in Figure 10. As shown in FIG. 11, the first to fourth sensing regions 331 to 334 may be formed in the sensing region to which one sensing fan 340 belongs in the vertical electrode. If the sensing sector 340 operates as a sensing electrode, a plurality of mutual capacitance change signals according to a certain driving signal can be sensed. A touch sensing circuit portion (not shown) may overlap and combine the plurality of signals described above to make a more accurate determination of the touch position.

In the case of the electrode pattern as shown in FIG. 10, due to being formed in the sensing region 310 The length of the line 315 of the boundary region becomes longer, which increases the leakage flux. Therefore, the mutual capacitance change amount sensing signal becomes stronger than in the case of no electrode pattern, thereby improving the accuracy of the touch input judgment.

Preferably, the width d1 of the phase line formed in the boundary region of each electrode in FIG. 10 and the width d2 of the extension line of each horizontal electrode do not exceed the set value, and the smaller the set value, the better. The smaller the set value, the more the effect of the difference in the area of the drive electrode and the sense electrode corresponding to each sensing region can be offset. Therefore, the touch sensing circuit portion (not shown) can perform touch input sensing determination more linearly.

FIG. 12 is a partial structural diagram of a touch sensing panel according to another embodiment of the present invention. Fig. 12 shows a touch sensing panel in which the pattern of the vertical electrodes of Fig. 7 is a quadrilateral protruding shape. Unlike FIG. 10, the pattern of the vertical electrodes of FIG. 12 is a quadrilateral protruding shape.

As shown in FIG. 12, the horizontal electrodes may be disposed such that the central horizontal axes of the horizontal electrodes 41a to 43a of the first group and the central horizontal axes of the horizontal electrodes 41b to 43b of the second group are not aligned. For example, the central horizontal axis 410 of the horizontal electrode 42a and the central horizontal axis 420 of the horizontal electrode 42b may be misaligned.

The two or more divided electrodes successively disposed adjacent to the respective horizontal electrodes shown in FIG. 12 can be electrically insulated. According to the embodiment shown in Fig. 12, the touch position can be accurately judged while reducing the number of channels. As shown in FIG. 12, the electrodes belonging to one column of the horizontal electrodes 42a are composed of four patches 431 to 434. The determination of the direct or nearby contact of each of the patches 431 to 434 can be judged by a combination of sensing signals in the sensing electrodes corresponding to the driving electrodes in the vicinity of the contact object to which a certain driving signal is applied. For example, if the area 441 of FIG. 12 is touched with a finger, the touch of the finger is determined by the combination of the sensing signals of the horizontal electrode 43a and the horizontal electrode 42b; if the area 441 is touched with the finger, the water is passed through The combination of the sensing signals of the flat electrode 43a and the horizontal electrode 42b determines whether the finger is touched or not; if the area 442 is touched by the finger, the touch of the finger is determined by the combination of the sensing signals of the horizontal electrode 42b and the horizontal electrode 41b; When the area 443 is touched with a finger, the touch of the finger is judged by the combination of the sensing signals of the horizontal electrode 41b and the horizontal electrode 41a. The difference between the sensing signal of the position 442 and the driving signal of the position 443 is different because the mutual capacitance change amount when the driving signal is applied to the level adjacent horizontal electrode 42b is larger than when the driving signal is applied to the horizontal electrode 41b adjacent to the diagonal line. The mutual capacitance varies greatly.

FIG. 13 is a partial structural diagram of a touch sensing panel according to another embodiment of the present invention. FIG. 13 shows a touch sensing panel in which the pattern of the vertical electrodes of FIG. 7 is trapezoidal.

The touch sensing panel shown in FIG. 13 includes horizontal electrodes, and the horizontal electrodes are divided into two groups 51a to 53a and 51b to 53b, and may be in a shape in which two convex protrusions are connected. The touch sensing panel shown in FIG. 13 may include vertical electrodes C51 to C58. The vertical electrodes C51 to C58 may be formed around the divided electrodes of the respective horizontal electrodes.

FIG. 15 is a structural diagram of a touch sensing panel including a mask layer according to another embodiment of the present invention.

As shown in FIG. 15, a touch sensing panel 530 is disposed on the digital device 510. The touch sensing panel 530 forms a touch detection area 560 on one surface of the external substrate 570 and a mask layer 540 on the back surface of the touch detection area 560. The external substrate 570 functions not only as a touch surface of the user but also to support the touch detection area 560. For normal operation of the capacitive touch sensing panel, preferably, the external substrate 570 is made of a material having a uniform permittivity and has a certain thickness. A sensing electrode that can sense a user's touch is disposed in the touch detection area 560. The touch sensing region 560 is integrally formed with the outer substrate 570 or attached by an adhesive layer.

The touch sensing panel 530 is provided on the outermost side of the digital device 510 that can be touched by the user due to its characteristics. In addition, the touch sensing panel 530 can also be electrically affected by internal circuitry or the like of the digital device 510. When the touch sensing panel 530 is a touch panel, electrical noise can flow from the circuit located at the back portion thereof, and when the touch sensing panel 530 is a touch screen, the circuit and the display device located at the back portion thereof can flow into the electrical circuit. News. In addition, external shocks to the transparent window may change the spacing between the touch detection area 560 and the display, which will result in a slight change in capacitance, resulting in noise. The mask layer 540 can reduce the malfunction caused by such electrical noise and improve the performance of the touch sensing panel 530.

The mask layer 540 includes a substrate 541 such as PET (polyethylene terephthalate) which forms the conductive thin layer 543. The conductive thin layer 543 functions to block electrical noise. It is preferable to electrically connect the conductive thin layer 543 to the GND. For this purpose, the mask layer 540 may include a wire 545 connected to the ground. The wire 545 can be made of a metal material such as silver. In combination with the touch sensing area, the mask layer 540 may include a transparent adhesive layer 547 of an OCA (optical clear adhesive) or the like.

When the touch sensing panel 530 is attached to the digital device 510, it is preferable to form an adhesive portion 515 having a void around the digital device 510.

The above-described embodiments are only intended to illustrate the invention and are not to be construed as limiting the scope of the invention. Within the scope of the patent application.

50‧‧‧Partial areas

100‧‧‧ touch sensing panel

110‧‧‧Substrate

120‧‧‧Touch detection area

130‧‧‧Wire area

135‧‧ ‧ busbar

141‧‧‧Extension line

143‧‧‧ Extension cord

145‧‧‧Extension line

151‧‧‧Segment electrode

900‧‧‧Partial areas

10A‧‧‧First horizontal electrode set

10B‧‧‧Second horizontal electrode set

11a, 12a, 13a, 14a, 15a‧‧‧ horizontal electrodes

11b, 12b, 13b, 14b, 15b‧‧‧ horizontal electrodes

11A~15A‧‧‧ wire

11B~15B‧‧‧Wire

C1~C8‧‧‧ wire

C11~C18‧‧‧ vertical electrode

X1~X8‧‧‧ horizontal position

Y1~Y5‧‧‧ vertical position

Claims (17)

A touch sensing panel includes: a touch detection area on one side of a substrate, the touch detection area includes a plurality of sensing regions; and a wire area on the touch detection area of the substrate The outer side; wherein the touch detection area comprises: a plurality of vertical electrodes extending into the wire area and arranged along a plurality of vertical axes, and each vertical electrode comprises a plurality of sensing sectors; and the plurality of patches are arranged adjacent to each other The vertical electrodes, and the patches are made of a conductive material, and each patch forms a part of one of a plurality of horizontal electrodes arranged along a plurality of horizontal axes; and a plurality of dummy electrodes, mutually Insulating and electrically insulated from at least a portion of the vertical electrodes and the patches; the horizontal electrodes comprising first and second horizontal electrodes arranged along a first horizontal axis; the vertical electrodes comprising a first a vertical electrode, the first vertical electrode has a plurality of sensing segments including a first sensing fan, the first sensing fan is disposed on a first patch of the first horizontal electrode and the first Forming a first sensing area with the first patch and forming a second sensing area with the second patch; the first patch and the second The patches are adjacent to each other and have a portion opposite; and the first sensing region and the second sensing region overlap each other at least a portion. The touch sensing panel of claim 1, further comprising a plurality of internal wires respectively connected to the patches and extending into the wire region, wherein each of the inner wires includes a first portion of the touch detection region and the wire a second portion in the region; the wire region includes a plurality of outer wires, the outer wires including a first outer wire connected to the inner wire of the patch connected to the first horizontal electrode and connected to the first wire A second outer conductor of the inner conductor of the patch of the two horizontal electrodes. The touch sensing panel of claim 2, wherein the substrate is a transparent window, and at least one of the vertical electrodes, the horizontal electrodes, and the inner wires are integrally formed with the transparent window. The touch sensing panel of claim 1, wherein the second vertical electrode is adjacent to the first vertical electrode and disposed between the first and second patches. The touch sensing panel of claim 4, wherein the patch of the first horizontal electrode and the patch of the second horizontal electrode are alternately disposed along the first horizontal axis; the third patch of the first horizontal electrode Adjacent to the second patch and opposite to the second patch portion; the vertical electrodes further comprising a third vertical electrode adjacent to the second vertical electrode; and the second and third patch settings Between the second and third vertical electrodes; the second and third vertical electrodes are electrically connected to each other. The touch sensing panel of claim 1, wherein at least one of the dummy electrodes is disposed between adjacent patches and adjacent to each other At least one of the vertical electrodes and the adjacent vertical electrodes and patches. The touch sensing panel according to claim 1, wherein a distance between the adjacent dummy electrodes and the patches or a distance between adjacent dummy electrodes and vertical electrodes is 10 μm to 50 μm. The touch sensing panel according to claim 1, wherein a spacing between adjacent patches, a spacing between adjacent vertical electrodes, and at least one of adjacent vertical electrodes and electrodes between the patches The spacing is consistent. The touch sensing panel of claim 8, wherein a lower limit width of at least one of the above-described pitches depends on a size of a foreign matter flowing in during manufacture of the touch sensing panel. The touch sensing panel of claim 8, wherein an upper limit width of at least one of the pitches is dependent on an average width of the plurality of patches or an average width of the plurality of vertical electrodes. The touch sensing panel of claim 1, wherein the dummy electrodes comprise adjacent first and second dummy electrodes, and a spacing between the first and second dummy electrodes is dependent on the touch sensing panel manufacturing described above. At least one of a distance of the foreign matter flowing in during the period, a distribution probability of the foreign matter, and a shape of the first or second dummy electrode. The touch sensing panel of claim 1, wherein at least one of the plurality of vertical electrodes comprises a plurality of protrusions. The touch sensing panel of claim 12, wherein the patch adjacent to at least one of the protrusions comprises at least one recess. The touch sensing panel of claim 12, wherein the protrusions comprise a strip-shaped first protrusion and are adjacent to the first protrusion and are strips a second protrusion; the first protrusion and one of the vertical electrodes have a first angle of inclination, and the second protrusion and one of the vertical electrodes have a second angle of inclination Degree; the sum of the first and second angles is 180 degrees. The touch sensing panel of claim 1, wherein a shape of a first end of at least one of the vertical electrodes comprises a plurality of refractive portions; the series of angles of the refractive portions is a preset limited number of columns Repeating; the finite sequence is 180, the first acute angle, 90 degrees, 90 degrees, and the first obtuse angle is 180 degrees, the first acute angle, the second acute angle, 90 degrees, 90 degrees, and the second acute angle is 180. The second obtuse angle of the degree is formed. The touch sensing panel of claim 1, further comprising a mask layer on the touch detection area for electrically masking the touch detection area. A display device comprising the touch sensing panel according to claim 1.