KR101054358B1 - Emitting Capacitive Touch Sensor and Light Guide for Touch Sensor - Google Patents

Abstract

The present invention relates to a light-emitting capacitive touch sensor and a light guide for a touch sensor, and in the present invention, <the action of inducing the keypad to have a transparency by changing the keypad to a transparent material> By moving to the housing, the key pattern can be made to have the same transparent material as that of the transparent light conductor, and the key pattern can be selected and displayed only when the surface of the transparent light body is normally kept transparent. By flexibly applying and implementing measures to induce them, and by doing so, to realize the high transparency of the touch sensor, and to guide the user side flexibly to solve the need for transparency of the touch sensor. Producers (electronic device producers, touch sensor producers, etc.) also enjoy the benefits of improving their product competitiveness. So it can be the guide.

Description

Light emitting type capacitive touch sensor and guide light device for the same}

The present invention relates to a light-emitting capacitive touch sensor and a light guide for a touch sensor, and more particularly, <action to induce the keypad to have transparency by changing the keypad to a transparent material>, <key pattern By moving to a transparent light guide, the key pattern can be made to have the same transparent material as that of the transparent light guide, and the key pattern is normally kept transparent and selected and displayed only when the surface of the transparent light guide is emitting light. By flexibly applying and implementing measures to induce, and through this, to realize the high transparency of the touch sensor, and to guide the user side flexibly to resolve the need for transparency of the touch sensor. , Producers (electronic device producers, touch sensor producers, etc.) side also effectively aimed at <advances in improving their product competitiveness> It relates to a light-emitting type capacitive touch sensor and a touch sensor for the light guide which can be to guide to.

Recently, with the rapid development of electric, electronic and communication related technologies, various electronic devices that use touch sensors, for example, light emitting capacitive touch sensors, as a series of <interface between user / electronic devices> have been widely developed and It is spreading.

In general, a touch sensor according to the related art provided in such electronic devices, for example, a light emitting capacitive touch sensor 10, has a key pad 1 having a key pattern 2, as shown in FIG. The sensing pad 4, the transparent light guide 6, and the like disposed below the key pad 1 are closely combined. In this case, a transparent adhesive for adhesively bonding them between the keypad 1, the sensing pad 4, the transparent light guide 6, and the like, for example, an optically clear adhesive (OCA), an ultraviolet ink adhesive Etc. are further arranged (on the one hand, the illustration of such a transparent adhesive is omitted. The same applies hereinafter).

Here, transparent LGP (Light Guide Panel), transparent LGF (Light Guide Film), etc. may be flexibly selected as the transparent light guide 6, and the polycarbonate film, acrylic film, etc. may be flexibly used as the keypad 1. The key pattern 2 included in the keypad 1 may be a flexible polymer material such as a PEDOT pattern (PEDOT pattern: Poly Ethylene DiOxty Thiospnene pattern).

In this case, the plurality of capacitive sensing patterns 3 provided in the sensing pad 4 have a structure in which the capacitive sensing patterns 3 are electrically connected to the control circuit of the printed circuit board of the electronic device through the electrical connection patterns 5 and the electrical connection lines. While the user touches the key patterns 2 provided on the keypad 1 through a part of his / her body, for example, a finger, and thus, the <circuit terminals in the electronic device connected to the user> and the <user> When a series of capacitance changes (i.e., changes in capacitance of an electronic device) occur in between, the change in capacitance is closely sensed, and then a corresponding position sensing coordinate signal is generated and the generated position is completed. By performing the role of transmitting the sensing coordinate signal to the control circuit side of the printed circuit board, it assists the electronic device side to appropriately perform a series of operations corresponding to the user's operation intention.

Here, when the light guide 6 is output from the light source 6a, the transparent light guide 6 forms a series of light emission states, and acts as a back light of the keypad 1, so that the user side, for example, at night, Even in a dark environment such as cloudy weather, while properly checking the brightly activated key patterns 2, it assists the normal use of the electronic device without any problems.

In recent years, as the demand for various electronic devices has rapidly increased, the <user side function improvement request> for the touch sensor 10 serving as an interface of the electronic device has also been widely increased, and in particular, such a user side function improvement. Among the demands, the request to make the touch sensor 10 transparent and to significantly improve its design quality has attracted much attention.

However, as shown in FIG. 1, the conventional keypad 1 is made of a polycarbonate film, an acrylic film, or the like, and maintains an opaque color. The key pattern 2 formed on the keypad 1 is formed. ) Also has a conductive polymer material such as PEDOT (PEDOT: Poly Ethylene DiOxty Thiospnene) and maintains an opaque color (for example, a dingy color), as shown in FIGS. 2 and 3. If no action is taken, the touch sensor 10 is always in the <external background, regardless of whether the light source 6a is on (in FIG. 2) or off (in FIG. 3). Inevitably, an opaque state that cannot penetrate the object S can be displayed. As a result, as shown in FIG. 4, the user's need for transparent devices can be completely eliminated. (E.g., On the user side using the electronic device, due to the opacity of the touch sensor 10, the external background object S cannot be transmitted through the touch sensor 10 at all.

Of course, under such adverse conditions, producers (electronic device producers, touch sensor producers, etc.) cannot flexibly respond to the recent user's demand for high-quality quality, thereby inevitably compromising their product competitiveness. In addition, the user side, too, can not avoid the damage that the use quality of the overall electronic device is significantly lowered.

Accordingly, an object of the present invention is to <transform the keypad into a transparent material to induce the keypad to have transparency>, and <by moving the key pattern to a transparent light guide so that the key pattern is transparent to the transparent light guide. In addition to inducing to have a material, the key pattern can be flexibly applied and implemented to maintain the transparency of the key pattern so that it can be selected and displayed only when the surface of the transparent light is emitted. Through this, by realizing the high transparency of the touch sensor, guides the user to flexibly solve the need for transparency of the touch sensor, and the producer (electronic device producer, touch sensor producer, etc.) This is a guide to effectively enjoy the benefits of improving our product competitiveness>.

Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

In order to achieve the above object, the present invention provides a light-emitting capacitive touch sensor installed in an electronic device having a printed circuit board, a transparent glass touch panel; It is disposed on the rear of the touch panel, and after sensing the capacitance change of the electronic device due to the user-side operation of touching the touch panel, and generates a position detection coordinate signal corresponding to the sensing signal, Capacitive sensing patterns for transmitting a position sensing coordinate signal to the printed circuit board; A transparent light guide disposed under the touch panel and emitting surface light according to light incident from a light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. The present invention provides a light-emitting capacitive touch sensor comprising a key pattern defining a user side touch area.

In another aspect of the present invention, there is provided a light-emitting capacitive touch sensor installed in an electronic device having a printed circuit board, the touch panel comprising a transparent glass material; Is disposed on the rear of the touch panel, and senses the capacitance change of the electronic device due to the user's action of touching the touch panel, and the position sensing X-axis coordinate signal or position sensing Y corresponding to the sensing signal First capacitance sensing patterns configured to generate an axis coordinate signal, and then transmit the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; A capacitance change of the electronic device due to a user side operation of touching the touch panel in response to the first capacitive sensing patterns and disposed under the touch panel, and corresponding to the corresponding sensing signal A second capacitance for generating a position sensing X axis coordinate signal or a position sensing Y axis coordinate signal, and then transmitting the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; A sensing pad having sensing patterns; A transparent light guide disposed under the sensing pad and emitting light in surface according to the light incident from the light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. The present invention provides a light-emitting capacitive touch sensor comprising a key pattern defining a user side touch area.

In another aspect of the present invention, there is provided a light-emitting capacitive touch sensor installed in an electronic device having a printed circuit board, the touch panel comprising a transparent glass material; Disposed under the touch panel and sensing a change in capacitance of the electronic device due to a user side operation of touching the touch panel, and generating a position sensing coordinate signal corresponding to the sensing signal, A sensing pad having capacitive sensing patterns for transmitting a position sensing coordinate signal to the printed circuit board; A transparent light guide disposed under the sensing pad and emitting light in surface according to the light incident from the light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. The present invention provides a light-emitting capacitive touch sensor comprising a key pattern defining a user side touch area.

Furthermore, in another aspect of the present invention, there is provided a light-emitting capacitive touch sensor installed in an electronic device having a printed circuit board, the touch panel comprising a transparent glass material; Disposed under the touch panel, and senses a change in capacitance of the electronic device due to a user side operation of touching the touch panel, and detects a position X axis coordinate signal or position Y corresponding to the corresponding sensing signal. A first sensing pad having first capacitance sensing patterns configured to generate an axis coordinate signal, and then transmit the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; Disposed under the first sensing pad, and in connection with the first capacitive sensing patterns, senses a change in capacitance of the electronic device due to a user side operation of touching the touch panel, and senses a corresponding sensing signal A second position for generating a position sensing X axis coordinate signal or a position sensing Y axis coordinate signal corresponding to the same, and then transmitting the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; A second sensing pad having capacitive sensing patterns; A transparent light conductor disposed under the second sensing pad and emitting surface light according to light incident from a light source; It is disposed on the front or the rear of the transparent light guide, and maintains the transparent state when there is no incident of the light beam, and is displayed as an active state through the touch panel only when the transparent light emits surface light due to the incident light. The present invention provides a light-emitting capacitive touch sensor comprising a key pattern defining a user side touch area.

In addition, in another aspect of the present invention, there is provided a light guide for a touch sensor provided in a light-emitting capacitive touch sensor, comprising: a main body made of a transparent material that emits light according to a light incident from a light source; Is disposed on the front or rear of the main body, the transparent state is maintained when there is no incidence of the light beam, due to the incidence of the light beam is displayed only in the active state when the main body is emitting light, the user side touch area Disclosed is a light guide for a touch sensor, characterized in that it comprises a key pattern defining a.

In the present invention, <the action of inducing the keypad to have transparency by changing the keypad to a transparent material> and <by disposing the key pattern to the transparent light conductor, the key pattern may have the same transparent material as that of the transparent light conductor. In addition, the key pattern can be flexibly applied and implemented to maintain the transparency of the key pattern so that the key pattern can be selected and displayed only when the surface of the transparent light emitter is activated. Under a full-fledged implementation environment, the touch sensor can achieve high transparency as a whole, and as a result, the user side can flexibly eliminate <the desire for transparency of the touch sensor>, and the producer (electronic device producer, touch sensor producer, etc.) Also, it is possible to effectively enjoy <the advantage of improving the product competitiveness of the company>.

Hereinafter, a light emitting capacitive touch sensor and a light guide for a touch sensor according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 5, the touch sensor 100 employing the present invention is installed in various electronic devices 200 (shown in FIGS. 8 and 10) such as a mobile phone, a PDP, and a game machine. The touch panel 121, the transparent light guide 150, the transparent cover film 160, and the like, which are closely linked to each other, take a structure that is systematically combined, and thus, as a series of <interface between user / electronic devices>, Will work. In this case, as the transparent light guide 150, a transparent light guide panel (LPP), a transparent material LGF (light guide film), or the like may be flexibly selected.

In this case, a transparent adhesive for adhesively bonding them between the touch panel 121, the transparent light guide 150, and the transparent cover film 160, for example, an optically clear adhesive (OCA), an ultraviolet ink adhesive And the like may be further disposed (on the convenience of illustration, such illustration of the transparent adhesive is omitted.

Here, the touch panel 121 of the present invention, unlike the conventional keypad, having a transparent glass material, for example, a transparent ITO tempered glass material, as shown in Figure 6 (Fig. 5 is an upside down view) Likewise, it has a structure having a plurality of capacitive sensing patterns 132 on one surface thereof, for example, a rear surface thereof.

In this case, the plurality of capacitive sensing patterns 132 disposed on the rear of the touch panel 121 are electrically connected to the control circuit of the printed circuit board of the electronic device through the electrical connection pattern 133 and the electrical connection lines. While taking the structure, the user touches the touch panel 121 through a part of his / her body, for example, a finger, and thus, a series of power failures between the <circuit terminal in the electronic device connected to himself> and the <user> When a change in capacitance (that is, a change in capacitance of an electronic device) occurs, the change in capacitance is closely sensed, and then a corresponding position detection XY coordinate signal is generated, and the generated position detection XY coordinate is completed. By performing the role of transmitting the signal to the control circuit side of the printed circuit board, it assists the electronic device side to appropriately perform a series of operations corresponding to the user's operating intention.

At this time, when the light guide is output from the light source 155, the transparent light guide member 151 disposed below the touch panel 121 forms a series of surface emitting states, thereby acting as a backlight of the touch panel 121. do.

Here, the key pattern 152 of the present invention is a main body of the transparent light guide 151 (that is, a body having a transparent material) by a series of patterning processes that proceed with the front or rear of the transparent light guide 151 as a target. By adopting a structure disposed on the front or rear surface, unlike the conventional key pattern, it shows a changed configuration moved to the main body of the transparent light guide 151 (in the drawing, the key pattern 152 is a front surface of the transparent light guide 151 for convenience). The case formed in the same).

As described above, in the present invention, the touch panel 121 is induced to have a transparent material such as ITO tempered glass, and the key pattern 152 is moved to the main body of the transparent light guide 151 so that the key pattern 152 is a transparent light guide. Since it is induced to have the same transparent material as the main body of 151, under the implementation environment of the present invention, the touch panel 121, the key pattern 152, etc., unlike the prior art, the <transparent state> to freely pass the light beam Can be achieved effectively.

At this time, in the present invention, as described above, instead of merely making the key pattern 152 transparent, a very unique measure is taken to transfer the key pattern 152 to the main body of the transparent light guide 151. Under the system, the key pattern 152 can effectively show a series of <transparent light linking operation patterns> that are activated or deactivated according to the operating state of the transparent light guide 151, unlike the conventional key pattern. The operation of the key pattern 152 greatly assists in the transparency of the touch sensor 100.

First, as shown in FIGS. 7A and 7B, under the system of the present invention, the key pattern 152 that operates in conjunction with the transparent light guide 151 does not have an incident light beam from the light source 155. When the main body of the 151 does not cause surface light emission, despite its pattern formation, it does not show any difference, and the ambient light (for reference, the ambient light refers to sunlight, illumination light, etc. supplied from the surrounding environment of the touch sensor. It should be noted that the light beam 155 is not a light beam concentrated from the light source 155 to the key pattern 152 side.

Of course, in this situation, the touch panel 121 disposed above the key pattern 152 also continuously maintains the <transparent state> for freely passing the light beam, as shown in FIG. 8. The touch sensor 100 side of the touch sensor 100 can effectively provide the <transparent transparency of the external background object (S) purely, even all the interference by the key pattern 152, it is possible, eventually, the electronic device 200 On the user's side, it becomes possible to naturally resolve <the desire for invisibility for the touch sensor 100>.

Next, as shown in FIGS. 9A and 9B, under the system of the present invention, the key pattern 152 that operates in conjunction with the transparent light guide 151 has a series of light incident from the light source 155, and thus transparency Unlike the previous case, when the main body of the housing 151 emits surface light, it is possible to activate its own pattern formation mode (that is, by intensively assisting light rays output from the light source 155). By quickly taking the action) and <brightly and transparently displayed> through the touch panel 121, to <define the user-side touch area in which predetermined letters, numbers, etc. are visually expressed> As shown in FIG. 10, the user side using the electronic device 200 properly checks the brightly activated key patterns 152 as shown in FIG. 10, without any problem. Normally it is able to use.

Of course, even in this case, the touch sensor 100 side of the present invention effectively provides <another type of transparency for transmitting the external background object S while the key pattern 152 is activated brightly and transparently. Since it is possible to do so, the user side using the electronic device 200 can naturally resolve the desire to be transparent to the touch sensor 100.

In this case, as shown in FIG. 5, under the structure of the touch sensor 100, a transparent cover film 160 (eg, an ITO film) having, for example, an ITO material is further disposed under the transparent light guide 151. .

In this case, as shown in FIG. 6, the transparent cover film 160 of the present invention takes a structure electrically connected to the capacitive sensing patterns 132 disposed on the rear surface of the touch panel 121. In addition, the capacitance sensing patterns 132 serve as grounds.

In addition, the transparent cover film 160 of the present invention has a structure to cover the rear of the transparent light guide 151 at the bottom of the transparent light guide 151, and is applied from the rear, not the front of the touch sensor 100. By physically blocking the touch pressure, the capacitive sensing pattern 132 may be prevented from causing, for example, a malfunction in response to an incorrect touch pressure applied from the rear side instead of the front side of the touch sensor 100.

Of course, since the transparent cover film 160 also has a transparent material such as ITO, and maintains a <transparent state allowing light to pass freely>, the transparent cover film 160 on the touch sensor 100 side of the present invention. It is possible to effectively provide <transparency for purely permeating the external background object S> even under the additional arrangement situation of i) (see FIGS. 8 and 10).

On the other hand, as shown in Figure 11, under another embodiment of the present invention, the touch sensor 101 is a touch panel 121, the sensing pad 171, the light guide 150, the transparent cover film 160, etc. A systematic combination is taken. Even in this case, as the transparent light guide 150, a transparent light guide panel (LGP), a transparent material LGF (light guide film), or the like may be flexibly selected.

In this case, a transparent adhesive for adhesively bonding them between the touch panel 121, the sensing pad 171, the transparent light guide 150, and the transparent cover film 160, for example, an optically clear adhesive (OCA: Optically). Clear Adhesive), ultraviolet ink adhesive, and the like may be further disposed.

Here, the touch panel 121 of the present invention, unlike the conventional keypad, having a transparent glass material, for example, a transparent ITO tempered glass material, as shown in Figure 12 (Fig. 11 is shown upside down) Likewise, it has a structure having a plurality of first capacitive sensing patterns 172 on one surface thereof, for example, a rear surface thereof.

In this case, the plurality of first capacitive sensing patterns 172 disposed on the rear of the touch panel 121 are electrically connected to the control circuit of the printed circuit board of the electronic device through electrical connection patterns and electrical connection lines. The user touches the touch panel 121 through a part of his or her body, for example, a finger, and thereby causes a series of capacitances between the <circuit terminal in the electronic device connected to himself> and the <user>. When a change (i.e., change in capacitance of the electronic device) occurs, the change in the capacitance is sensed closely, and then a corresponding position sensing X coordinate signal or position sensing Y coordinate signal is generated. The position corresponding to the user's manipulation intention on the electronic device side is performed by transmitting the completed position sensing X coordinate signal or position sensing Y coordinate signal to the control circuit side of the printed circuit board. A secondary operation is to be appropriately taken.

In this case, as shown in FIG. 11, the second capacitive sensing patterns 171 arranged on the sensing pad 171 have an arrangement structure opposite to the first capacitive sensing patterns 172 described above. (For example, when the first capacitive sensing patterns 172 take a horizontal arrangement, the second capacitive sensing patterns 171 take a longitudinal arrangement), and the electrical connection pattern Through electrical connection lines, it is electrically connected to the control circuit of the printed circuit board on the electronics side.

In this situation, the second capacitive sensing patterns 171 allow the user to touch the touch panel 121 through a part of his / her body, for example, a finger, and thus, the <circuit terminal in the electronic device connected thereto> When a series of capacitance changes (i.e., changes in capacitance of the electronic device) occur between and <user>, the change of the corresponding capacitance is connected in connection with the first capacitance sensing patterns 172. After sensing carefully, a corresponding position sensing X coordinate signal or position sensing Y coordinate signal is generated, and the generated position sensing X coordinate signal or position sensing Y coordinate signal is transmitted to the control circuit side of the printed circuit board. By performing the role of, to the electronic device side, it is assisted to appropriately perform a series of operations corresponding to the user's operating intention.

In this case, when the first capacitive sensing patterns 172 generate the X coordinate signals for position sensing, the second capacitive sensing patterns 171 generate the Y coordinate signals for position sensing. When the first capacitance sensing patterns 172 generate the Y coordinate signal for position sensing, the X coordinate signal for position sensing is generated.

At this time, when the light guide is output from the light source 155, the transparent light guide member 151 disposed below the touch panel 121 forms a series of surface emitting states, thereby acting as a backlight of the touch panel 121. do.

Here, the key pattern 152 of the present invention has a structure that is disposed on the front or rear surface of the transparent light guide 151 by a series of patterning processes that are performed by targeting the front or rear surface of the transparent light guide 151. Unlike the conventional key pattern, the changed configuration shown in the light guide 151 is shown.

As described above, in another embodiment of the present invention, the touch panel 121 is induced to have a transparent material such as ITO tempered glass, and the key pattern 152 is moved to the transparent light guide 151, thereby providing the key pattern 152. Since it is induced to have the same transparent material as the transparent light guide 151, under the other implementation environment of the present invention, the touch panel 121, key pattern 152, etc., unlike the prior art, < Transparent state> can be achieved effectively.

In this case, as described above, the present invention takes a very unique measure to move the key pattern 152 to the transparent light guide 151 instead of simply making the key pattern 152 transparent. Under the system, the key pattern 152 can effectively show a series of <transparent light linking operation patterns> that are activated or deactivated according to the operating state of the transparent light guide 151, unlike the conventional key pattern. The operation of the key pattern 152 greatly assists in high transparency of the touch sensor 101.

First, as shown in FIG. 13, under another system of the present invention, the key pattern 152 cooperating with the transparent light guide 151 has no incident light rays from the light source 155, and thus the transparent light guide 151 ) Does not cause surface luminescence, despite its pattern formation, the ambient light (note, this ambient light also refers to sunlight, illumination light, etc. supplied from the surrounding environment of the touch sensor, without any loss). It should be noted that the light is not a light beam concentrated on the key pattern 152 from 155). The transparent state is continuously maintained (see FIG. 7B above).

Of course, in this situation, the touch panel 121 disposed on the top of the key pattern 152 also continuously maintains the <transparent state> for freely passing the light beam. In the touch sensor 101 side of the present invention, it is possible to effectively provide the <transparency to purely penetrate the external background object (S)>, which is completely excluded even the interference by the key pattern 152, after all, the electronic device 200 In the user's side, <the desire for invisibility for the touch sensor 101> can be naturally solved.

Next, under the system of the present invention, if the key pattern 152 that operates in conjunction with the transparent light guide 151 has a series of light incident from the light source 155, and the transparent light guide 151 causes surface emission, Unlike the previous case, by activating his own pattern of shaping the pattern (that is, by intensively assisting the pattern formation through the intensive help of the light beam output from the light source 155), the touch panel 121 By quickly taking <the operation that is displayed brightly and transparently>, it is possible to normally perform the role of defining the user-side touch area in which predetermined letters, numbers, etc. are visually expressed. As shown in FIG. 10, the user side using the electronic device 200 properly checks the brightly activated key patterns 152, and is able to use the electronic device 200 normally without any problems. (See the Fig. 9b).

Of course, even in this case, the touch sensor 101 side of the present invention can effectively provide <another type of transparency for transmitting the external background object S while the key pattern 152 is activated brightly and transparently. As a result, the user side using the electronic device 200 can naturally resolve the need for invisibility of the touch sensor 101.

Meanwhile, as shown in FIG. 11, the transparent cover film 160 (eg, ITO film) having, for example, an ITO material is further disposed below the transparent light guide 151.

Even in this case, the transparent cover film 160 of the present invention may include the first capacitive sensing patterns 171 disposed on the rear surface of the touch panel 121 and the second capacitive sensing pattern disposed on the sensing pad 170. Taking a structure electrically connected to the 172, it serves as the ground of the corresponding capacitance sensing patterns (171, 172).

In addition, the transparent cover film 160 of the present invention has a structure to cover the rear of the transparent light guide 151 at the bottom of the transparent light guide 151, and is applied from the rear, not the front of the touch sensor 101. By physically blocking the touch pressure, the capacitive sensing patterns 171 and 172 may be prevented from causing, for example, a malfunction in response to an incorrect touch pressure applied from the rear surface instead of the front surface of the touch sensor 101.

On the other hand, as shown in Figure 14, under another embodiment of the present invention, the touch sensor 102 is a touch panel 121a, the sensing pad 131, the light guide 150, the transparent cover film 160 The back is systematically combined. Even in this case, as the transparent light guide 150, a transparent light guide panel (LGP), a transparent material LGF (light guide film), or the like may be flexibly selected.

In this case, a transparent adhesive for adhesively bonding them between the touch panel 121a, the sensing pad 131, the transparent light guide 150, and the transparent cover film 160, for example, an optically clear adhesive (OCA: Optically). Clear Adhesive), ultraviolet ink adhesive, and the like may be further disposed.

In this case, the touch panel 121a of the present invention has a transparent glass material different from the previous case, for example, a transparent tempered glass material.

Here, a plurality of capacitive sensing patterns 132 are disposed on the sensing pad 131 disposed under the touch panel 121a, and the capacitive sensing patterns 132 are the electrical connection pattern 133 and the electrical connection line. By taking a structure that is electrically connected to the control circuit of the printed circuit board on the electronic device side, the user touches the touch panel 121 through a part of his / her body, for example, a finger, and thereby, < When a series of capacitance changes (i.e., changes in capacitance of an electronic device) occurs between a circuit terminal> and <user> in an electronic device connected to the electronic device, the change of the capacitance is closely sensed, and then the corresponding By generating the position detection XY coordinate signal and transmitting the completed position detection XY coordinate signal to the control circuit side of the printed circuit board, corresponding to the user's operation intention on the electronic device side This will assist you in taking appropriate action.

In this case, when the light guide is output from the light source 155, the transparent light guide 151 disposed below the sensing pad 131 forms a series of surface emitting states, thereby acting as a backlight of the touch panel 121a. do.

Here, the key pattern 152 of the present invention has a structure that is disposed on the front or rear surface of the transparent light guide 151 by a series of patterning processes that are performed by targeting the front or rear surface of the transparent light guide 151. Unlike the conventional key pattern, the changed configuration shown in the light guide 151 is shown.

As described above, in still another embodiment of the present invention, the touch panel 121a is induced to have a transparent material such as transparent tempered glass, and the key pattern 152 is moved to the transparent light guide 151, thereby providing the key pattern 152. ) Guides the transparent light guide 151 to have the same transparent material as that of the transparent light guide 151, so that the touch panel 121a, the key pattern 152, and the like pass freely through the light beam, even under another embodiment of the present invention. The transparent state can be effectively achieved.

In this case, as described above, the present invention takes a very unique step of moving the key pattern 152 to the transparent light guide 151 instead of simply making the key pattern 152 transparent. Under another system, the key pattern 152 can effectively show a series of <transparent light linking operation patterns> which are activated or deactivated according to the operating state of the transparent light guide 151, unlike the conventional key pattern. As a result, the operation of the key pattern 152 greatly aids in high transparency of the touch sensor 101.

First, as shown in FIG. 15, under another system of the present invention, the key pattern 152 cooperating with the transparent light guide 151 does not have an incident light beam from the light source 155, so that the transparent light guide ( When the 151 does not cause surface light emission, despite its pattern formation, the ambient light (for reference, this ambient light also refers to sunlight, illumination light, etc. supplied from the surrounding environment of the touch sensor) without any loss. It should be noted that the light is not concentrated to the key pattern 152 from 155. The transparent state is continuously maintained (see FIG. 7B above).

Of course, in this situation, since the touch panel 121a disposed on the upper part of the key pattern 152 also continuously maintains the <transparent state> for freely passing the light beam, as shown in the preceding 8, In the touch sensor 101 side of the present invention, it is possible to effectively provide the <transparency to purely penetrate the external background object (S)>, which is completely excluded even the interference by the key pattern 152, after all, the electronic device 200 In the user's side, <the desire for invisibility for the touch sensor 101> can be naturally solved.

Next, under the system of the present invention, if the key pattern 152 that operates in conjunction with the transparent light guide 151 has a series of light incident from the light source 155, and the transparent light guide 151 causes surface emission, Unlike the previous case, by activating his own pattern formation form (that is, by intensively assisting the light rays output from the light source 155), his touch pattern 121a is activated. By quickly taking <the operation that is displayed brightly and transparently>, it is possible to normally perform the role of defining the user-side touch area in which predetermined letters, numbers, etc. are visually expressed. As shown in FIG. 10, the user side using the electronic device 200 properly checks the brightly activated key patterns 152, and is able to use the electronic device 200 normally without any problems. (See the Fig. 9b).

Of course, even in this case, the touch sensor 102 side of the present invention may effectively provide <another type of transparency for transmitting the external background object S while the key pattern 152 is activated brightly and transparently. Therefore, the user side using the electronic device 200 can naturally resolve the desire to become transparent to the touch sensor 102.

Meanwhile, as shown in FIG. 14, the transparent cover film 160 (eg, ITO film) having, for example, an ITO material is further disposed below the transparent light guide 151.

In this case, the transparent cover film 160 of the present invention has a structure electrically connected to the capacitive sensing patterns 132 disposed on the sensing pad 131, and the grounds of the capacitive sensing patterns 132 are provided. Will act as.

In addition, the transparent cover film 160 of the present invention has a structure to cover the rear of the transparent light guide 151 at the bottom of the transparent light guide 151, and is applied from the rear, not the front of the touch sensor 101. By physically blocking the touch pressure, the capacitive sensing pattern 132 may be prevented from causing, for example, a malfunction in response to an incorrect touch pressure applied from the rear side instead of the front side of the touch sensor 101.

On the other hand, as shown in Figure 16, under another embodiment of the present invention, the touch sensor 103 is a touch panel 121a, the first sensing pad 181, the second sensing pad 191, the light guide 150, the transparent cover film 160 and the like are systematically combined. In this case, as the transparent light guide 150, LGP (Light Guide Panel) of transparent material, LGF (Light Guide Film) of transparent material, etc. may be flexibly selected.

In this case, a transparent adhesive for adhesive bonding between the touch panel 121a, the first sensing pad 181, the second sensing pad 182, the transparent light guide 150, the transparent cover film 160, and the like, For example, an optically clear adhesive (OCA), an ultraviolet ink adhesive, or the like may be further disposed.

Here, the touch panel 121a of the present invention has a transparent glass material different from the previous case, for example, a transparent tempered glass material.

In this case, the plurality of first capacitive sensing patterns 182 disposed on the first sensing pad 181 disposed under the touch panel 121a may be connected to the electronic device through electrical connection patterns and electrical connection lines. Taking the structure of being electrically connected to the control circuit of the printed circuit board, the user touches the touch panel 121a through a part of his / her body, for example, a finger, whereby <circuit in the electronic device connected to himself When a series of capacitance changes (i.e., changes in the capacitance of an electronic device) occur between the terminal> and <user>, after sensing the change of the capacitance closely, the corresponding X coordinate signal for position sensing Alternatively, by generating a position detection Y coordinate signal, and delivering the generated position detection X coordinate signal or position detection Y coordinate signal to the control circuit side of the printed circuit board, the user on the electronic device side, A series of operations corresponding to the operating physician is secondary to properly take.

In this case, the second capacitive sensing patterns 192 arranged on the second sensing pad 191 disposed under the first sensing pad 181 may be different from the first capacitive sensing patterns 182 described above. When the first capacitive sensing patterns 182 take a horizontal arrangement while the array structures in opposite directions are used (for example, the second capacitive sensing patterns 192 take a vertical arrangement. Electrical connection patterns and electrical connection lines, which are electrically connected to the control circuit of the printed circuit board on the electronic device side.

In this situation, the second capacitive sensing patterns 192 allow the user to touch the touch panel 121a through a part of his / her body, for example, a finger, and thus, the <circuit terminal in the electronic device connected thereto> When a series of capacitance changes (i.e., changes in capacitance of an electronic device) occur between and <user>, the change of the corresponding capacitances in connection with the first capacitance sensing patterns 182 described above is displayed. After sensing carefully, a corresponding position sensing X coordinate signal or position sensing Y coordinate signal is generated, and the generated position sensing X coordinate signal or position sensing Y coordinate signal is transmitted to the control circuit side of the printed circuit board. By performing the role of, to the electronic device side, it is assisted to appropriately perform a series of operations corresponding to the user's operating intention.

In this case, when the first capacitive sensing patterns 182 generate the X coordinate signal for position sensing, the second capacitive sensing patterns 192 generate the Y coordinate signal for position sensing. When the first capacitive sensing patterns 182 generate the Y coordinate signal for position sensing, the X coordinate signal for position sensing is generated.

At this time, the transparent light guide 151 disposed below the touch panel 121a, when light is output from the light source 155, forms a series of surface emission states, thereby acting as a backlight of the touch panel 121a. Done.

Here, the key pattern 152 of the present invention has a structure that is disposed on the front or rear surface of the transparent light guide 151 by a series of patterning processes that are performed by targeting the front or rear surface of the transparent light guide 151. Unlike the conventional key pattern, the changed configuration shown in the light guide 151 is shown.

As described above, in still another embodiment of the present invention, the touch panel 121a is induced to have a transparent material such as transparent tempered glass, and the key pattern 152 is moved to the transparent light guide 151, thereby providing the key pattern 152. ) Guides the transparent light guide 151 to have the same transparent material as that of the transparent light guide 151, so that the touch panel 121a, the key pattern 152, and the like pass freely through the light beam, even under another embodiment of the present invention. The transparent state can be effectively achieved.

In this case, as described above, the present invention takes a very unique measure to move the key pattern 152 to the transparent light guide 151 instead of simply making the key pattern 152 transparent. Under the system, the key pattern 152 can effectively show a series of <transparent light linking operation patterns> that are activated or deactivated according to the operating state of the transparent light guide 151, unlike the conventional key pattern. The operation of the key pattern 152 greatly assists in high transparency of the touch sensor 101.

First, as shown in FIG. 17, under another system of the present invention, the key pattern 152 cooperating with the transparent light guide 151 does not have an incident light beam from the light source 155, and thus the transparent light guide 151 ) Does not cause surface luminescence, despite its pattern formation, the ambient light (note, this ambient light also refers to sunlight, illumination light, etc. supplied from the surrounding environment of the touch sensor, without any loss). It should be noted that the light is not a light beam concentrated on the key pattern 152 from 155). The transparent state is continuously maintained (see FIG. 7B above).

Of course, in this situation, since the touch panel 121a disposed on the upper part of the key pattern 152 also continuously maintains the <transparent state> for freely passing the light beam, as shown in the preceding 8, In the touch sensor 103 side of the present invention, it is possible to effectively provide < transparency purely penetrating the external background object S > that excludes any interference caused by the key pattern 152, and finally, the electronic device 200 In the user's side, the desire to become transparent to the touch sensor 103 can be naturally solved.

Next, under the system of the present invention, if the key pattern 152 that operates in conjunction with the transparent light guide 151 has a series of light incident from the light source 155, and the transparent light guide 151 causes surface emission, Unlike the previous case, by activating his own pattern formation form (that is, by intensively assisting the light rays output from the light source 155), his touch pattern 121a is activated. By quickly taking <the operation that is displayed brightly and transparently>, it is possible to normally perform the role of defining the user-side touch area in which predetermined letters, numbers, etc. are visually expressed. As shown in FIG. 10, the user side using the electronic device 200 properly checks the brightly activated key patterns 152, and is able to use the electronic device 200 normally without any problems. (See the Fig. 9b).

Of course, even in this case, the touch sensor 103 side of the present invention may effectively provide <another type of transparency for transmitting the external background object S while the key pattern 152 is activated brightly and transparently. As a result, the user side using the electronic device 200 can naturally resolve the need for invisibility of the touch sensor 103.

Meanwhile, as shown in FIG. 16, the transparent cover film 160 (eg, ITO film) having, for example, an ITO material is further disposed below the transparent light guide 151.

Even in this case, the transparent cover film 160 of the present invention may include the first capacitive sensing patterns 182 disposed on the first sensing pad 181 and the second capacitive sensing disposed on the second sensing pad 191. While taking a structure electrically connected to the pattern 192, the capacitive sensing patterns 182 and 192 serve as grounds.

In addition, the transparent cover film 160 of the present invention has a structure covering the rear of the transparent light guide 151 at the lower portion of the transparent light guide 151, and is applied from the rear, not the front of the touch sensor 103. By physically blocking the touch pressure, the capacitive sensing patterns 182 and 192 may be prevented from causing, for example, a malfunction in response to an incorrect touch pressure applied from the rear surface instead of the front surface of the touch sensor 103.

The present invention described above exhibits an overall useful effect in various types of electronic / electrical devices requiring a touch sensor.

And, in the foregoing, specific embodiments of the present invention have been described and illustrated, but it is obvious that the present invention may be variously modified and implemented by those skilled in the art. Such modified embodiments should not be understood individually from the technical spirit or point of view of the present invention and such modified embodiments should fall within the scope of the appended claims of the present invention.

1 is an exemplary view showing a light-emitting capacitive touch sensor according to the prior art.

2 to 4 is an exemplary view showing an example of the use of the light-emitting capacitive touch sensor according to the prior art.

Figure 5 is an exemplary view showing a light emitting capacitive touch sensor according to an embodiment of the present invention.

6 is an exemplary view showing the touch sensor shown in FIG. 5 upside down.

7 to 10 are exemplary views showing an example of the use of the light-emitting capacitive touch sensor according to an embodiment of the present invention.

Figure 11 is an exemplary view showing a light emitting capacitive touch sensor according to another embodiment of the present invention.

12 is an exemplary view showing the touch sensor shown in FIG. 11 upside down.

Figure 13 is an illustration showing an example of the use of the light-emitting capacitive touch sensor according to another embodiment of the present invention.

14 and 16 are exemplary views illustrating a light emitting capacitive touch sensor according to another embodiment of the present invention.

15 and 17 are exemplary views showing an example of the use of the light-emitting capacitive touch sensor according to another embodiment of the present invention.

Claims (15)

In the light emitting capacitive touch sensor installed in the electronic device having a printed circuit board, A transparent glass touch panel; It is disposed on the rear of the touch panel, and after sensing the capacitance change of the electronic device due to the user-side operation of touching the touch panel, and generates a position detection coordinate signal corresponding to the sensing signal, Capacitive sensing patterns for transmitting a position sensing coordinate signal to the printed circuit board; A transparent light guide disposed under the touch panel and emitting surface light according to light incident from a light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. And a key pattern defining a user side touch area. The transparent light guide of claim 1, further comprising: a lower portion of the transparent light guide and electrically connected to the capacitive sensing patterns to serve as grounds of the capacitive sensing patterns and to cover a rear surface of the transparent light guide. Light-emitting capacitive touch sensor further comprises a transparent cover film to prevent malfunction of the capacitive sensing patterns. The light emitting capacitive touch sensor according to claim 2, wherein the transparent cover film is an ITO film. In the light emitting capacitive touch sensor installed in the electronic device having a printed circuit board, A transparent glass touch panel; Is disposed on the rear of the touch panel, and senses the capacitance change of the electronic device due to the user's action of touching the touch panel, and the position sensing X-axis coordinate signal or position sensing Y corresponding to the sensing signal First capacitance sensing patterns configured to generate an axis coordinate signal, and then transmit the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; A capacitance change of the electronic device due to a user side operation of touching the touch panel in response to the first capacitive sensing patterns and disposed under the touch panel, and corresponding to the corresponding sensing signal A second capacitance for generating a position sensing X axis coordinate signal or a position sensing Y axis coordinate signal, and then transmitting the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; A sensing pad having sensing patterns; A transparent light guide disposed under the sensing pad and emitting light in surface according to the light incident from the light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. And a key pattern defining a user side touch area. 5. The display device of claim 4, further comprising a lower portion of the transparent light guide and electrically connected to the first and second capacitive sensing patterns to act as a ground of the first and second capacitive sensing patterns. A light emitting capacitive touch sensor further comprising a transparent cover film covering a rear surface of the transparent light conductor to prevent malfunction of the first and second capacitance sensing patterns. 6. The light emitting capacitive touch sensor according to claim 5, wherein the transparent cover film is an ITO film. The light emitting capacitive touch sensor according to any one of claims 1 to 4, wherein the touch panel has a transparent ITO tempered glass material. In the light emitting capacitive touch sensor installed in the electronic device having a printed circuit board, A transparent glass touch panel; Disposed under the touch panel and sensing a change in capacitance of the electronic device due to a user side operation of touching the touch panel, and generating a position sensing coordinate signal corresponding to the sensing signal, A sensing pad having capacitive sensing patterns for transmitting a position sensing coordinate signal to the printed circuit board; A transparent light guide disposed under the sensing pad and emitting light in surface according to the light incident from the light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. And a key pattern defining a user side touch area. The method of claim 8, further comprising a lower portion of the transparent light guide, electrically connected to the capacitive sensing patterns, serving as a ground of the capacitive sensing patterns, and covering the rear surface of the transparent light guide. Light-emitting capacitive touch sensor, characterized in that it further comprises a transparent cover film to prevent malfunction of the capacitive sensing patterns. 10. The light emitting capacitive touch sensor according to claim 9, wherein the transparent cover film is an ITO film. In the light emitting capacitive touch sensor installed in the electronic device having a printed circuit board, A transparent glass touch panel; Disposed under the touch panel, and senses a change in capacitance of the electronic device due to a user side operation of touching the touch panel, and detects a position X axis coordinate signal or position Y corresponding to the corresponding sensing signal. A first sensing pad having first capacitance sensing patterns configured to generate an axis coordinate signal, and then transmit the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; Disposed under the first sensing pad, and in connection with the first capacitive sensing patterns, senses a change in capacitance of the electronic device due to a user side operation of touching the touch panel, and senses a corresponding sensing signal A second position for generating a position sensing X axis coordinate signal or a position sensing Y axis coordinate signal corresponding to the same, and then transmitting the generated position sensing X axis coordinate signal or position sensing Y axis coordinate signal to the printed circuit board; A second sensing pad having capacitive sensing patterns; A transparent light conductor disposed under the second sensing pad and emitting surface light according to light incident from a light source; It is disposed on the front or rear of the transparent light conductor, and maintains the transparent state when there is no incident of the light beam, and is displayed as an activated state through the touch panel only when the transparent light body is surface-emitted due to the incident light. And a key pattern defining a user side touch area. The display device of claim 11, further comprising: a lower portion of the transparent light guide and electrically connected to the first and second capacitive sensing patterns to serve as grounds of the first and second capacitive sensing patterns. A light emitting capacitive touch sensor further comprising a transparent cover film covering a rear surface of the transparent light conductor to prevent malfunction of the first and second capacitance sensing patterns. 13. The light emitting capacitive touch sensor according to claim 12, wherein the transparent cover film is an ITO film. The light emitting capacitive touch sensor as claimed in claim 8, wherein the touch panel has a transparent tempered glass material. In the light guide for the touch sensor provided in the light-emitting capacitive touch sensor, A main body made of a transparent material which emits light in accordance with the light incident from the light source; Is disposed on the front or rear of the main body, the transparent state is maintained when there is no incidence of the light beam, due to the incidence of the light beam is displayed only in the active state when the main body is emitting light, the user side touch area The light guide for the touch sensor, characterized in that it comprises a key pattern for defining.

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