KR100954894B1

KR100954894B1 - Touch panel sensor

Info

Publication number: KR100954894B1
Application number: KR1020090085519A
Authority: KR
Inventors: 남동식
Original assignee: 남동식
Priority date: 2009-09-10
Filing date: 2009-09-10
Publication date: 2010-04-28

Abstract

PURPOSE: A touch panel sensor is provided to reduce the use of an insulating sheet by directly forming an electrode pattern on a glass substrate. CONSTITUTION: A blocking unit(140) on a glass substrate(110) blocks the penetration of normal light. Plural micro metal patterns(112) senses the access of a physical body. A metal electrode terminal is electrically connected with the plural micro metal patterns. The metal electrode terminal is electrically connected with an external circuit board(101). A transparent electrode pattern(122) of a lower sheet(120) is electrically insulated with the micro metal pattern and the metal electrode terminal. Through the variation of the capacitance value of an intersection with the micro metal pattern, the lower sheet senses the access of the physical body.

Description

Touch Panel Sensor {TOUCH PANEL SENSOR}

The present invention relates to a touch panel sensor, and more particularly, to a touch panel sensor for detecting a contact position of a part of the body through a change in capacitance.

1 is a perspective view illustrating a conventional capacitive touch panel sensor.

Referring to FIG. 1, the conventional touch panel sensor 1 is bonded to the lower insulating sheet 10 and the upper insulating sheet 20 at predetermined intervals. The lower ITO electrode 30 and the upper ITO electrode 40 are vertically arranged on the opposite surfaces of the lower insulating sheet 10 and the upper insulating sheet 20, and specifically, the lower ITO electrode 30 is The upper surface of the lower insulating sheet 10 is oriented from left to right, and the upper ITO electrode 40 is oriented from the upper side to the lower side on the bottom surface of the upper insulating sheet 20.

The touch panel sensor 1 has a predetermined capacitance, that is, a capacitance value, corresponding to the area of each intersection at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 arranged to cross each other. When the body part is close, the capacitance of the body part may be changed by adding the area of the body part to the area of the upper ITO electrode 20 disposed above.

At this time, the upper ITO electrode 20, which is relatively narrower than the lower ITO electrode 30, may be used as a drive line for intermittently providing a high frequency current, and the lower ITO electrode 30 may have an upper portion. When a current is provided to the ITO electrode 20, an output signal generated by a change in the capacitance value of the lower ITO electrode 30 and the upper ITO electrode 20, which is changed by the presence or absence of a part of the body, that is, the reacted current value It can be used as a sensing line (sense line) for measuring the difference of.

As described above, in response to an input signal such as an electric current intermittently disposed on the display, the contact position of the body part may be detected by detecting a change in the output signal that is changed.

On the other hand, since the width of the lower ITO electrode 20 is relatively wide compared with the upper ITO electrode 40, even if the length is slightly longer, the input signal or the output signal that is transmitted intermittently is sufficiently transferred to the external controller. It is easy to adjust to have a resistance value that can be delivered. Here, the controller inputs an input signal to either the lower ITO electrode 20 or the upper ITO electrode 40, and detects a contact position of a part of the body using the output signal output to the other side.

However, since the width of the upper ITO electrode 40 is narrower than that of the lower ITO electrode 20 so that a change in capacitance value occurs at an intersection point, the resistance value increases rapidly as the length thereof becomes longer. Therefore, it is difficult to form a thin and long as the upper ITO electrode 40, which may cause a limitation of the total area of the touch panel sensor (1).

On the other hand, widening the width of the upper ITO electrode 40 in order to lower the resistance is limited in consideration of the occurrence of the change in the capacitance value generated by interacting with the lower ITO electrode 20, the width of the lower ITO There is a restriction that can not be wider than the width of the electrode 20, and further, if the width is wider, the light transmittance of the touch screen may be lowered or the image may be finely distorted.

In addition, in order to electrically connect the upper ITO electrode 40 and the electrode 52 of the external circuit board 50, a connecting line 48 made of metal is formed from the end of the upper ITO electrode 40 from the upper insulating sheet 20. It extends to the bottom of the), the lower ITO electrode 20 is also connected to the circuit board 50 by a separate connection line.

In this case, the connecting line 48, which is generally provided as a metal, is shiny with metallic luster and does not pass through the light, so that the connecting line 48 may be visually confirmed on the upper portion of the transparent upper insulating sheet 20. Thus, conventionally, a non-translucent film 45 for window decoration is attached to the upper surface of the upper insulating sheet 20 so that the connecting line 48 and the circuit board 50 are not visually identified.

However, attaching the non-translucent film 45 to the upper surface of the upper insulating sheet 20 may cause a defect because it can easily be shifted during the attaching process, and the attaching process itself is cumbersome and may cause process difficulty. Can be.

In order to protect the surface of the upper insulating sheet 20, a tempered glass plate 70 may be further provided on the upper insulating sheet 20. However, as a result, the thickness of the touch panel sensor is increased, and it maintains the disadvantage that the assembly process is complicated.

The present invention can reduce the use of the insulating sheet by forming an electrode pattern directly on the glass substrate in the touch panel sensor, and has a relatively low resistance to overcome the limitation of the electrode length and is also useful for large area touch sensing touch panel sensor To provide.

The present invention is limited by increasing the length by the resistance of the upper ITO electrode disposed on the upper insulating sheet, to provide a touch panel sensor that can minimize the area of the touch panel sensor is limited.

The present invention provides a touch panel sensor that can prevent the transparency and clarity of the touch panel sensor from falling off when the width thereof is increased to lower the resistance value of the upper ITO electrode disposed on the upper insulating sheet.

The present invention provides a touch panel sensor in which the connecting line and the circuit board for electrically connecting the upper ITO electrode disposed on the upper insulating sheet and the external circuit board are not visually confirmed.

The present invention provides a touch panel sensor that can prevent the non-translucent film from deteriorating product value due to damage such as scratches.

The present invention is to prevent the upper insulating sheet is refracted downward without thickening the thickness of the upper insulating sheet to prevent the upper insulating sheet is refracted downward, or to provide a separate reinforcing sheet or glass plate thereon, the touch panel sensor It provides a touch panel sensor that does not drop the sensitivity.

According to an exemplary embodiment of the present invention, the touch panel sensor for detecting a contact position of a part of the body through a change in capacitance, the glass substrate, a blocking portion provided to the glass substrate to prevent normal light transmission, It is formed on the bottom surface of the glass substrate with a width of more than 0 and 30㎛ or less, and is electrically connected to the plurality of micrometal patterns and the plurality of micrometal patterns, respectively, to detect the access of a part of the body, and is located at the lower part of the breaker to form an external circuit board. And a metal electrode terminal electrically connected to the microelectrode terminal, and a micrometal pattern and a transparent electrode pattern electrically insulated from the metal electrode terminal and provided at a lower portion of the glass substrate to cross the micrometal pattern when the body part approaches. It includes a lower sheet for detecting the approach of a part of the body by changing the capacitance value of.

In the present invention, by forming a fine metal pattern of a metal material having a lower resistance coefficient than a transparent electrode using ITO or IZO on the bottom surface of the glass substrate, it is easy to increase its length relatively, thereby the area of the touch panel sensor by the resistance The limit is reduced relatively.

In addition, although the micrometal pattern is formed of a metal material through which light does not penetrate, the width of the micrometal pattern may be appropriately adjusted so that the micrometal pattern may not be visible in the touch area during use. For example, when a fine metal pattern is formed to a thickness of 30 μm or less under a condition that an LCD or the like emits light from the back of the touch panel sensor, the pattern cannot be seen by the naked eye. In addition, when the micrometal pattern becomes thinner and becomes 10 μm or less, it may not be noticeable at all under any conditions.

The blocking unit is to block the metal electrode terminals from the outside of the panel, and may be a logo or a pattern formed on the touch panel of the product, and may include a window decoration formed in a frame shape around the touch panel.

In general, a window frame in the shape of a frame is added to the touch panel sensor to cover the ITO electrode or the metal pattern. When the window decoration is formed on the bottom surface of the glass substrate, the window decoration depends on the position of the fine metal pattern and the conductive connection pattern. The order of formation of can be changed.

For example, a window decoration may be provided on the bottom surface of the micrometal pattern and the metal electrode terminal. In this case, the window decoration may include a through hole exposing each of the metal electrode terminals. This is because the conductive connection pattern connecting the metal electrode terminal and the external circuit board is electrically connected to the metal electrode terminal.

However, the metal electrode terminal may be exposed to the outside through a through hole formed to connect the metal electrode terminal and the conductive connection pattern. Specifically, a metal electrode terminal for electrically connecting the micro metal pattern and the external circuit board is formed on the bottom surface of the glass substrate, which generally has a width of the micro metal pattern so as to facilitate the connection with the circuit board. It is formed much larger than the width, and thus, it can be visually confirmed through the through hole at the outside of the glass substrate through which the light passes well, which can have an aesthetic effect.

Accordingly, the shielding portion may be provided on the glass substrate so that the metal electrode terminal may be hidden from the outside. The blocking portion can be formed by treating an opaque or translucent effect on the glass, and the blocking portion can be formed using an existing general structure so as not to reveal its purpose as a blocking portion. For example, an existing product logo or trademark may be displayed on a panel. At this time, the logo or trademark may be used as a blocking part. If the micro metal pattern or the metal electrode terminal is formed below, the window decoration itself may be used as the blocking part.

For example, the blocking part forms a groove using hydrofluoric acid (HF) that can etch SiO ₄ , which is a glass material, on the glass substrate, and fills the non-translucent paint in the groove, or the surface itself is subjected to chemical etching by hydrofluoric acid. Can be used as a blocking unit. In addition, a scratch is formed on the surface of the glass substrate so that light is dispersed, or a plurality of beads having a logo or a trademark expressed on the surface of the glass substrate and beaded on the surface of the glass substrate in order to increase the bonding force between the glass substrate and the logo. May be sintered to express a glassy logo and trademark on the glass substrate.

On the other hand, the blocking unit may be formed in the original portion provided, such as numbers, letters, and figures that can be used in the product trademark or logo of the device to which the touch panel sensor is applied, it can be provided so that the user does not feel any rejection.

In the present invention, the glass substrate is a material having a high surface strength, although not a glass material, may be understood as a concept including another plastic material that transmits light and has excellent surface strength.

In addition, a window decoration may be formed on the bottom surface of the glass substrate, a micrometal pattern and a metal electrode terminal may be formed thereon, and a conductive connection pattern may be immediately formed. In other words, the window decoration is formed between the bottom surface of the glass substrate and the top surface of the micro metal pattern and the metal electrode terminal. In this case, the conductive connection pattern formed on the bottom of the window decoration is used without forming a separate penetration in the window decoration. Thus, the metal electrode terminal and the external circuit board can be electrically connected. In this case, since the through-holes do not have to be formed, the window decoration can be used as the blocking unit.

In the touch panel sensor of the present invention, the resistance of the micrometal pattern formed on the bottom surface of the glass substrate is smaller than that of the transparent electrode, so the length is less limited. The area of can be easily increased. In addition, the transparent touch panel sensor is not affected by transparency and sharpness by appropriately adjusting its width.

The touch panel sensor of the present invention forms a window decoration on the bottom surface of the glass substrate to prevent the conductive connection pattern from being visible through the glass substrate, so that the window decoration is peeled off during use, but the product value is reduced due to damage such as scratching. Can be prevented,

In particular, by forming a blocking portion in the glass substrate, when forming the window decoration on the bottom surface of the fine metal pattern, it is possible to prevent the exposure of the metal electrode terminal through the through hole,

The blocking unit may be formed in a portion originally provided such as numbers, letters, and figures that may be used in a product trademark or a logo of a device to which the touch panel sensor is applied, so that the user may not feel any rejection.

Since the touch panel sensor of the present invention has a high strength, since the glass substrate itself has a high strength, the touch panel sensor is not bent downward without thickening its thickness so as to prevent it from being deflected downward or providing a separate reinforcing sheet on top thereof. The sensitivity of the panel sensor is excellent.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, in the present description, the same numbers refer to substantially the same elements, and may be described by referring to the contents described in the other drawings under these rules, and the contents determined to be obvious to those skilled in the art or repeated may be omitted.

The present invention relates to a touch panel sensor for use in a display for sensing the contact position of a part of the body.

Example 1

2 is an exploded perspective view illustrating a touch panel sensor according to a first embodiment of the present invention, FIG. 3 is a rear perspective view of a glass substrate of the touch panel sensor according to the first embodiment of the present invention, and FIG. 3 is a cross-sectional view of the touch panel sensor, FIG. 5 is a partially enlarged view of FIG. 3, and FIG. 6 is a partially enlarged cross-sectional view for explaining a connection structure between the metal electrode terminal and the conductive connection pattern in FIG. 3.

2 to 6, the touch panel sensor 100 includes a glass substrate 110, a lower sheet 120, and an insulating member 130.

The glass substrate 110 and the lower sheet 120 are both formed of an insulating material, and a transparent material capable of passing light emitted from a display such as a PDP or LCD, which may be disposed at the bottom of the touch panel sensor 100. It can be formed as.

At this time, in the case of the lower sheet 120, since the shape is firmly supported by the display disposed below and is not a part where the body part is directly touched, the shape is not easily deformed by external force, and thus its strength is particularly strong. It is not necessary to consider, and may be formed by using a material such as plastic and glass, such as polyethylene (polyethylene), polypropylene (polypropylene), acrylic (acryloyl), polyethylene terephthalate (PET). For reference, although the transparent electrode pattern 122 is formed on the upper surface of the lower sheet 120 to face the fine metal pattern 112, in some cases, the transparent electrode pattern is formed on the lower surface of the lower sheet, and the same direction as each other. It can be formed to look at.

In the case of the glass substrate 110, unlike the lower sheet 120 described above, its strength should be considered. Specifically, the touch panel sensor 100 of the present invention adopts a capacitive method, so that the electrodes formed on the bottom surface of the glass substrate 110 and the electrodes formed on the upper surface of the lower sheet 120 do not occur to be bonded to each other. When the body part is directly touched by the glass substrate 110, it is preferable that the glass substrate 110 is not refracted downward as much as possible. Accordingly, the glass substrate 110 in the present invention may include a rigid glass substrate having excellent strength and not easily refracted, and although not necessarily a glass material, light transmits and has a high strength and is not easily refracted. and reinforced plastics such as polycarbonate).

Therefore, by using the rigid glass substrate 110 as the substrate disposed on the touch panel sensor 100, the glass substrate 110 is not bent down or bent by the body contact, it is applied to the capacitive method Even if there is no problem, and there is no need to use a separate sheet to supplement the strength of the glass substrate 110, the manufacturing is simple, the cost is reduced, and further, the thickness of the glass substrate 110 itself is thin The sensitivity of the touch panel sensor 100 is also excellent.

On the other hand, the bottom surface and the upper surface of the glass substrate 110 and the lower sheet 120 described above are formed with a fine metal pattern 112 and a transparent electrode pattern 122 to interact with each other to detect the approach of the body part, The fine metal pattern 112 and the transparent electrode pattern 122 may be electrically separated by the insulating member 130 disposed between the glass substrate 110 and the lower sheet 120. The insulating member 130 is bonded to the glass substrate 110 and the lower sheet 120 by using an optical adhesive film or an optically clear adhesive (OCA) film.

The transparent electrode pattern 122 may use indium tin oxide (ITO) or indium zinc oxide (IZO), which is widely used as a transparent electrode among conductive materials of a transparent material.

The micrometal pattern 112 is provided in plural on the bottom surface of the glass substrate 110, and as the material of the micrometal pattern 112, various metals such as gold, silver, aluminum, nickel, and titanium, or alloys using the metals described above. Etc. can be used.

Here, since the micrometal pattern 112 is formed of a metal material, light may not transmit or reflect, but the micrometal pattern 112 may be provided so as not to be visible by appropriately adjusting its width. As a rule of thumb, if the width is less than 0 μm and less than 30 μm, the LCD may not be visible from the outside during light emission.

At this time, since the fine metal pattern 112 has a lower resistance coefficient than the transparent electrode pattern 122 using ITO or IZO, even if the length is increased, the resistance does not increase significantly. Therefore, it is relatively easy to increase the length of the fine metal pattern 112, and the area limitation of the touch panel sensor 100 is relatively small.

On the other hand, in the case of increasing the length of the fine metal pattern 112, the length of the transparent electrode pattern 122 formed on the lower sheet 120 also increases the resistance, but the transparent electrode pattern 122 formed on the lower sheet 122 ) Is provided in a relatively wide width to induce a change in capacitance by body contact, so that the increase in the resistance value is not large even if its length is increased.

The above-described fine metal pattern 112 and the transparent electrode pattern 122 are electrically connected to the external circuit board 101. First, the transparent electrode pattern 122 is a circuit from the lower end of the transparent electrode pattern 122 The substrate 101 may be connected to the circuit board 101 through a metal connection line 124 extending to the bottom of the lower sheet 120.

In addition, each of the plurality of micrometallic patterns 112 is integrally connected to the metal electrode terminal 114 having a width of approximately 50 μm at each lower end thereof. The metal electrode terminal 114 having a width wider than the width of the micro metal pattern 112 is integrally electrically connected to the lower end of the micro metal pattern 112, and the metal electrode terminal 114 is again removed from the metal electrode terminal 114. The circuit board 101 is electrically connected to the circuit board 101 by a conductive connection pattern 116 extending to a portion where the circuit board 101 is disposed.

For reference, as shown in the drawing, the connection line 124 and the conductive connection pattern 116 are electrically connected to the electrodes 102 of the circuit board 101 formed on different surfaces of the circuit board 101, respectively. The insulating member 130 is provided by partially cutting the portion where the circuit board 101 is disposed.

Meanwhile, a window decoration 150 is formed under the glass substrate 110 to prevent the non-transmissive conductive connection pattern 116 and the circuit board 101 from being visible from the outside through the glass substrate 110. It is.

In detail, the window decoration 150 is formed on the bottom surface of the fine metal pattern 112 and the metal electrode terminal 114, and includes a through hole 152 that exposes each of the metal electrode terminals 114.

The through hole 152 is provided to electrically connect the conductive connection pattern 116 connecting the metal electrode terminal 114 and the external circuit board 101 to the metal electrode terminal 114.

However, since the glass substrate 110 is transparent, the metal electrode terminal 114 may be exposed to the outside through the through hole 152 formed to connect the metal electrode terminal 114 and the conductive connection pattern 116. have.

Specifically, the metal electrode terminal 114 for electrically connecting the micro metal pattern 122 and the external circuit board 101 is formed on the bottom surface of the glass substrate 110, which is generally connected to the circuit board 101. In order to facilitate the connection, the width is formed to be approximately 50 μm or more, which is much larger than the width of the fine metal pattern 112, and thus, the through-hole 152 outside the glass substrate 110 through which light passes well. ) Can be identified with the naked eye, which can adversely affect aesthetics.

Therefore, in the present invention, the glass substrate 110 may be provided with a blocking unit 140 using a logo or the like, so that the metal electrode terminal 114 may be covered from the outside. Specifically, the blocking unit 140 forms a groove formed from the upper surface of the glass substrate 110 by using hydrofluoric acid (HF) capable of etching SiO ₄ , which is a material of glass, and fills the non-translucent paint in the groove. Can be formed. In addition, scratches are formed on the surface of the glass substrate 110 to disperse light or provide glass beads attached to the upper surface of the glass substrate, and the glass beads are processed by sintering to be firm on the surface of the glass substrate. Can be formed.

On the other hand, the blocking unit 140 is formed on the originally provided portion, such as numbers, letters, logos and figures that can be used in the product trademark or logo of the device to which the touch panel sensor 100 is applied, the user does not feel a sense of rejection So that it can be provided.

In addition, as described above, by forming a window decoration 150 on the bottom surface of the glass substrate 110 to prevent the conductive connection pattern 116 from being visible from the outside, the window decoration during use of the touch panel sensor 100 150 is not broken.

Example 2

7 is a cross-sectional view illustrating a structure of a touch panel sensor according to a second embodiment of the present invention.

Referring to FIG. 7, the touch panel sensor according to the second embodiment of the present invention is substantially the same as the touch panel sensor described in the first embodiment. Therefore, the description of the touch panel sensor in the second embodiment may refer to the description and the drawings of the touch panel sensor of the second embodiment, and repeated content may be omitted.

However, the light absorption part 211 is further formed between the micrometal pattern 212 and the glass substrate 210 of the second embodiment of the present invention.

Specifically, referring to FIG. 7, the touch panel sensor 200 according to the present exemplary embodiment includes a glass substrate 210, a lower sheet 220, and an insulating member 230.

The lower sheet 220 may be disposed on an upper portion of the display, and the glass substrate 210 may be spaced apart from the lower sheet 220 by an insulating member 230 disposed therebetween.

The plurality of transparent electrode patterns 222 are arranged side by side in one direction on the upper surface of the lower sheet 220, and the fine metal patterns 212 are arranged to cross the transparent electrode patterns 222 under the glass substrate 210. A plurality is arranged, but the light absorbing portion 211 is interposed between the glass substrate 210 and the fine metal pattern 212.

As described above, the light absorbing layer for the light absorbing unit 211 is first formed so that the light absorbing unit 211 and the fine metal pattern 212 are sequentially stacked downward from the bottom surface of the glass substrate 210. A metal electrode layer for the micrometal pattern 212 is formed on the entire bottom surface of the bottom surface 210, and then the light absorption layer and the metal electrode layer are patterned together to form the light absorption portion 211 and the fine metal pattern 212. ) Can be provided.

On the other hand, since the light absorbing portion 211 is formed on the upper surface of the fine metal pattern 212, by absorbing the light irradiated from the outside through the glass substrate 210, the fine metal pattern 212 to the outside light It is possible to prevent the phenomenon of glare by directly reflecting, and the light absorbing unit 211 may use copper / titanium (Cu / Ti) or molybdenum (Mo), and may use dark chromium oxide or light absorbing organic material. It may be. In addition, light may be mutually canceled by adjusting the thickness of oxide deposition layers such as SiO ₂ and TiO ₂ , and may be provided by forming a low-reflection coating layer.

Of course, as in the second embodiment, in addition to forming the light absorbing portion 211, it is possible to form a fine metal pattern using a dark metal, wherein chromium, chromium alloy, copper / titanium alloy, etc. The metal itself can be used without the light absorbing portion.

Example 3

8 is a cross-sectional view illustrating a structure of a touch panel sensor according to a third embodiment of the present invention.

Referring to FIG. 8, the touch panel sensor 300 according to the third embodiment of the present invention is substantially the same as the touch panel sensor 100 described in the first embodiment. Therefore, the description of the touch panel sensor 300 in the second embodiment may refer to the description and the drawings of the touch panel sensor 100 of the first embodiment, and the repeated content may be omitted.

However, the light absorbing part 311 and the color developing part 315 are sequentially stacked on the upper surface of the fine metal pattern 312 of the touch panel sensor 300 of the third exemplary embodiment of the present invention.

Specifically, referring to FIG. 8, the touch panel sensor 300 according to the present exemplary embodiment includes a glass substrate 310, a lower sheet 320, and an insulating member 330. The lower sheet 320 may be disposed on an upper portion of the display, and the glass substrate 310 may be spaced apart from the lower sheet 320 by an insulating member 330 disposed therebetween. The plurality of transparent electrode patterns 322 are arranged side by side in one direction on the top surface of the lower sheet 320, and the fine metal patterns 312 are aligned to cross the transparent electrode patterns 322 under the glass substrate 310. A plurality is arranged, but between the glass substrate 310 and the fine metal pattern 312, the light absorbing portion 311 and the color development portion 315 is interposed.

As described above, the color developing part 315, the light absorbing part 311, and the fine metal pattern 312 may be sequentially stacked downward from the bottom surface of the glass substrate 310. First, after the chrominance part 315 is formed on the bottom surface of the glass substrate 310 as a whole, the light absorption layer for the light absorption part 311 is further formed on the entire bottom surface of the chrominance part 315, and fine on the bottom surface again. After forming the metal electrode layer for the metal pattern 312, the light absorbing layer 311 and the metal electrode layer are patterned together to provide the light absorbing portion 311 and the fine metal pattern 312. have.

The color developing part 315 may be formed on the entire bottom surface of the glass substrate 310 as in the present embodiment, but the electrical conductivity of the fine metal pattern 312 is affected by the insulating color developing part 315 formed on the upper surface thereof. When the value decreases, the color developing unit 315 may also be patterned to correspond to the shape of the light absorbing unit 311.

Since the light absorbing part 311 is formed on the upper surface of the metal electrode 340, the light absorbing part 311 may absorb light emitted from the outside through the glass substrate 310, and thus the fine metal pattern 312 may absorb the external light. Direct reflection can prevent glare.

In addition, in the process of patterning the light absorbing layer and the metal electrode layer at the same time to provide the light absorbing portion 311 and the fine metal pattern 312, the color developing portion 315 of the light absorbing portion 311 and the fine metal pattern 312 The pattern may be patterned together to correspond to the shape. However, in the present embodiment, as described above, the color development part 315 is formed on the entire bottom surface of the glass substrate 310 to express a specific color on the bottom surface of the glass substrate 310. have. Specifically, by using an oxide such as SiO ₂ , TiO _2, or the like, the color developing part 315 may express metal gloss, pearl gloss, or the like.

Meanwhile, as shown in FIG. 8, the color developing part 315 may be applied to the entire bottom surface of the glass substrate 310 or various methods may be used to form a specific pattern. For example, silk screen or inkjet printing may be used. Or it can be formed through various printing methods, such as gravure printing. In addition, the coloring layer may be removed together while patterning the fine metal pattern or the light absorbing portion.

Example 4

9 illustrates a glass substrate structure of a touch panel sensor according to a fourth embodiment of the present invention.

Referring to FIG. 9, the touch panel sensor according to the fourth embodiment of the present invention has a stacked structure similar to the touch panel sensor 100 described in the first embodiment. However, only the glass substrate 410 may include a micrometal pattern 412 having a different structure, and other laminated structures such as a lower sheet are substantially the same. Therefore, in the present embodiment, the description of the touch panel sensor may refer to the description and the drawings of the touch panel sensor 100 of the first embodiment, and the repeated content may be omitted.

The plurality of fine metal patterns 412 are disposed at equal intervals, and the fine metal patterns 412 may be arranged more closely than the first embodiment. However, adjacent patterns of the micrometal pattern 412 may be provided as a group, and the group 413 of the micrometal pattern 412 may be connected to one metal electrode terminal 414.

In this case, all of the top, bottom, top, and bottom of the micrometal pattern 412 may be connected in the group 413 of the micrometal pattern, or alternatively, the micrometal pattern 412 may be provided to be connected or intersect in the middle of each other. .

In the first embodiment, in the region where only one micrometal pattern 112 is in charge, in the present embodiment, five micrometal patterns 412 may be arranged at equal intervals and form a group 413. Therefore, the sensitivity of the touch panel sensor can be increased, and high resolution can be detected.

In addition, when the arrangement interval between the fine metal patterns 412 is A, an area where the micro metal pattern 412 is disposed per A ² in an area to be touched except for window decoration, that is, a touch area is ² compared to the A ² area. It is desirable to be below%. That is, the area blocked by the micrometal pattern 412 in A ² may be maintained at 2% or less to properly block the image by the touch panel sensor.

Of course, the light absorbing part may be formed on the micrometal pattern 412 to prevent reflection from the outside, and the coloring part may be formed, or the micrometal pattern itself may be formed of a dark metal.

Example 5

10 is a view illustrating a glass substrate structure of a touch panel sensor according to a fifth embodiment of the present invention.

Referring to FIG. 10, the touch panel sensor according to the fifth embodiment of the present invention has a stacked structure similar to the touch panel sensor 100 described in the first embodiment. However, only the glass substrate 510 may include a micro metal pattern 512 having a different structure, and other laminated structures such as a lower sheet are substantially the same. Therefore, in the present embodiment, the description of the touch panel sensor may refer to the description and the drawings of the touch panel sensor 100 of the first embodiment, and the repeated content may be omitted.

The plurality of fine metal patterns 512 are disposed at equal intervals, and the fine metal patterns 512 may be arranged more closely than the first embodiment. In addition, adjacent patterns among the micrometal patterns 512 may be provided as a group, and the group 513 of the micrometal patterns 512 may be connected to one metal electrode terminal 514. However, the fine metal pattern 512 may be provided in a curved or non-linear form rather than a straight line, and the side surface of the pattern may be provided to extend in a relatively longer state than a straight line through a regular pattern.

As shown, even when the micrometallic patterns are not grouped, the micrometallic patterns may be provided in a straight line as well as periodically repeated curves, bends, or specific patterns.

At this time, although the upper and lower ends of the micrometal pattern 512 are connected to each other in the group 513 of the micrometal pattern, only the lower end of the pattern electrode 514 and the metal electrode terminal 514 may be connected. The micrometal pattern 512 may be provided to be connected or intersect in the middle of each other.

In the first embodiment, in the region where only one micrometal pattern 112 is in charge, in the present embodiment, five micrometal patterns 512 may be arranged at equal intervals and form a group 513. Therefore, the sensitivity of the touch panel sensor can be increased, and high resolution can be detected.

In addition, when the arrangement interval between the fine metal patterns 512 is A, the area to be touched except for window decoration, that is, the area where the fine metal pattern 512 is disposed per A ² in the touch area is ² compared to the A ² area. It is desirable to be below%. Even when the micrometal pattern 512 is not straight but bent, the area blocked by the micrometal pattern 512 may be maintained at 2% or less to properly block the image by the touch panel sensor.

As described above, the light absorbing portion may be formed on the micrometal pattern 512 to prevent reflection from the outside, and a coloring part may be formed using oxide deposition, and the micrometal pattern itself may be formed of a dark metal. It may be formed.

Example 6

FIG. 11 illustrates a glass substrate structure of a touch panel sensor according to a sixth exemplary embodiment of the present invention.

Referring to FIG. 11, the glass substrate according to the sixth embodiment of the present invention has a fine metal pattern structure similar to that of the glass substrate 610 described in the fourth embodiment. However, the end 615 of the micrometal pattern connecting the group 613 of the micrometal pattern and the metal electrode terminal 614 is connected to a plurality of strands instead of one.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

2 is an exploded perspective view illustrating a touch panel sensor according to a first embodiment of the present invention.

3 is a rear perspective view of the glass substrate of the touch panel sensor according to the first embodiment of the present invention.

4 is a cross-sectional view of the touch panel sensor of FIG. 3.

5 is a partially enlarged view of FIG. 3.

6 is a partially enlarged cross-sectional view illustrating a connection structure of a metal electrode terminal and a conductive connection pattern in FIG. 3.

100: touch panel sensor 101: circuit board

110: glass substrate 112: fine metal pattern

116 ： conductive connection pattern 120 ： bottom sheet

122: transparent electrode pattern 124: connecting line

130: insulation member 150: window decoration

152 ： Through hole 311 ： Light absorption part

315: Color development part

Claims

In the touch panel sensor for detecting the contact position of a part of the body through the change of capacitance,

Glass substrates;

A blocking portion provided on the glass substrate and formed to interfere with normal light transmission;

A plurality of micrometal patterns formed on a bottom surface of the glass substrate having a width of greater than 0 and 30 μm or less for detecting an approach of a body part;

A metal electrode terminal electrically connected to each of the plurality of micrometal patterns, the metal electrode terminal being positioned below the blocking unit and electrically connected to an external circuit board; And

And a microelectrode pattern and a transparent electrode pattern electrically insulated from the metal electrode terminal. The microelectrode pattern includes a microelectrode pattern and a transparent electrode pattern electrically insulated from the metal electrode terminal. A lower sheet for sensing an access of a part of the body through;

Touch panel sensor comprising a.
The method of claim 1,

The blocking part may include a window decoration formed on the bottom surface of the micro metal pattern and the metal electrode terminal. The window decoration may include through holes exposing each of the metal electrode terminals, and the metal electrode may be disposed on a bottom surface of the window decoration. Touch panel sensor, characterized in that the conductive connection pattern is formed to connect the terminal and the external circuit board.
The method of claim 1,

The blocking part includes a window decoration formed between the micrometal pattern and the upper surface of the metal electrode terminal and the bottom surface of the glass substrate, and a conductive connection pattern connecting the metal electrode terminal and the external circuit board to the bottom of the window decoration. Touch panel sensor, characterized in that formed.
The method of claim 3,

The metal electrode terminal is positioned under the window decoration, and is blocked so as not to be visible from the outside.
delete
delete
The method of claim 1,

The fine metal pattern is a touch panel sensor, characterized in that formed in a width of less than 0 ㎛ 10㎛.
The method of claim 1,

When the distance between the fine metal pattern is A, the area of the fine metal pattern is formed to maintain 2% or less in preparation for the area corresponding to A ² , the touch panel sensor, characterized in that to block the light.
The method of claim 1,

And a light absorbing part formed between the glass substrate and the fine metal pattern.
10. The method of claim 9,

The light absorbing unit is a touch panel sensor, characterized in that using a copper / titanium (Cu / Ti) alloy, molybdenum (Mo), chromium oxide, light absorbing organic material, or anti-reflection coating.
The method of claim 1,

The touch panel sensor further comprises a color developing portion formed between the glass substrate and the fine metal pattern.
The method of claim 11,

The coloring unit is a touch panel sensor, characterized in that formed using an oxide deposition layer, such as SiO ₂ and TiO ₂ .
The method of claim 11,

The color development part is formed on the entire bottom surface of the glass substrate, or partially formed corresponding to the shape of the fine metal pattern.
The method of claim 1,

The blocking unit is a touch panel sensor, characterized in that it comprises a dispersion surface for injecting light using a chemical etching or scratch on the surface of the glass substrate.
The method of claim 1,

The blocking unit is formed by forming a groove on the surface of the glass substrate, the touch panel sensor, characterized in that formed by filling the non-transparent paint filled in the groove.
The method of claim 1,

The blocking unit provides a plurality of glassy beads attached to an upper surface of the glass substrate and is formed by processing the glassy beads.
The method of claim 1,

The blocking unit is a touch panel sensor, characterized in that formed to include numbers, letters, logos and figures.
The method of claim 1,

And a plurality of adjacent micrometal patterns in the touch area of the glass substrate are provided as a group, and at least one of upper, lower, and middle portions of the grouped micrometal patterns is electrically connected to each other.
The method of claim 1,

An end portion of the micrometal pattern connected to the metal electrode terminal is connected to one or a plurality of strands.
The method of claim 1,

The fine metal pattern is a touch panel sensor, characterized in that provided in the form of a straight line, periodically repeated curved or bent line.