KR101964856B1 - Touch pad for icon light point lighting using laser direct structuring technique - Google Patents

Abstract

The present invention relates to a touch pad capable of illuminating an icon disposed at an upper portion thereof by using an LDS method so as to protrude an inner portion of a touch panel in contact with a printed circuit board A disk-shaped printed circuit board for processing a touch signal inputted from a user and emitting an LED formed therein; A plurality of LEDs arranged on a top surface of the printed circuit board and each having a diamond-shaped conductive plate connected in a four-sided manner; a through hole is provided in an upper portion of the LED, The through hole being disposed at the center of the cell; And a glass disposed above the touch panel and configured to cover the printed circuit board and the touch panel, the glass being made of a dielectric material to improve the contact property, to be suitable for the mass production system, and to enhance the esthetics of the jog shuttle A hole is formed on the inner side, the amount of charge is increased to increase the sensitivity, and the light is transmitted through the diffuser or the inclined surface to enhance the aesthetic feeling.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch pad for an icon light point light using an LDS method,

The present invention relates to a touch pad capable of lighting an icon using an LDS method, and more particularly, to a touch pad capable of protruding an inner portion of a touch panel contacting a printed circuit board (PCB) And a touch pad capable of lighting an icon disposed on the upper side using an LDS method.

The present invention relates to a touch pad for an icon light point light using an LDS method, and more particularly, to an LED for a printed circuit board (PCB) for implementing a module including a touch pad, And more particularly, to a touch pad for an icon light point light using an LDS method in which emitted light passes through a touch panel and light is transmitted through a diffuser to enhance an aesthetic feeling.

Conventional touch panel touch input methods include electric resistance type, capacitive type, optical type, electromagnetic type, and sound wave type. Among them, when the user touches the panel surface with the finger or the touch pen, the voltage and current changes within the panel of the touch position to detect the touch position of the panel surface, and the purpose of the touch input It is a way to achieve.

In order to detect the position where the user touches the touch panel with a finger or a touch pen, the manufacturer has developed various capacitive touch sensing technologies. For example, a structure of a grid-type capacitive touch circuit pattern includes two groups of capacitance-responsive layers, separated by a middle insulating layer to form a capacitance effect, Wherein the two capacitance sensing layers are substantially perpendicular to each other and each conductive element has a rhombic lined electrode block so that a transparent conductive material (e.g., indium tin oxide Oxide (ITO), and the plurality of electrode blocks are connected together through a narrow lead line, the conductive elements on each capacitive sensing layer are connected to one peripheral circuit, and a control circuit is connected to the plurality of peripheral circuits Each providing a signal to two groups of conductive elements and receiving a touch signal generated by the electrode block when the surface is touched It is determined as the touch position of each layer.

In addition, in the conventional manufacturing method of the capacitive touch-screen circuit pattern structure, a plurality of electrode regions of the first group of capacitive sensing layers are formed through primary processing, and then peripheral circuits are formed through secondary processing, Connected to a plurality of electrode blocks of the first group of capacitance sensing layers; A plurality of electrode blocks of the second group of capacitive sensing layers are formed through fourth processing to form an insulating layer on the entire surface through the third processing and then another peripheral circuit is formed through fifth processing, And is connected to a plurality of electrode blocks of the capacitance sensing layer of the second group. However, the disadvantage of this method is that a large number of electrode blocks, insulation layers, and peripheral circuits of the two groups of capacitive sensing layers must be subjected to fifth-order machining, so that the processing is relatively cumbersome, It is difficult to effectively reduce the resistance between each electrode block and the peripheral circuit, and it is difficult to improve the accuracy of signal transmission between each electrode block and the peripheral circuit because the lead wire connecting the electrode block is also manufactured using indium tin oxide.

In order to solve such a problem, in the electrostatic capacity type touch circuit pattern of the Korean Patent No. 10-1304787 (entitled "Capacitive touch circuit pattern and manufacturing method thereof" hereinafter referred to as "cited invention"), A substrate on which at least two adjacent transparent first axial electrode blocks, a transparent first axial lead, and at least two adjacent transparent second axial electrode blocks are formed; A first axial lead line formed between the two adjacent first axial electrode blocks so that the two adjacent first axial electrode blocks are connected to each other and the two adjacent axial axial electrode blocks being installed on both sides; A second axial lead wire that is made of a metal that is laid across the first axial lead line and connects the two adjacent second axial electrode blocks; An insulating spacing point formed between the first axial lead line and the second axial lead line and forming electrical insulation between the first axial lead line and the second axial lead line; And a second axial peripheral circuit formed at two adjacent short sides of the substrate and connected to the first axial peripheral circuit and the second axial electrode block, respectively, connected to the first axial electrode block To a capacitive touch circuit pattern and a manufacturing method thereof. As a result, the plurality of first and second axial axial electrode blocks are arranged and formed in a single machining operation, thereby reducing the number of machining steps required for installing the touch circuit pattern.

On the other hand, FIG. 1 is a diagram showing the distribution of charges generated in a cell constituted by a diamond-shaped conductor by a general repulsive force.

Referring to FIG. 1, the charge distribution in the cell has a repulsive force as shown in FIG. The surface charge density can be defined as ρs [c / m ² ], assuming that charge is uniformly distributed on the surface of the cell. If the charge is not distributed in the cell, there is no electric field because there is no electric field. That is, if the electric charge in the thin cell is distributed around the outer angle, there is a problem that the electric charge density is low and the electric field is also low.

2 is a view showing an electric field formed between cells of a general diamond panel.

Referring to FIG. 2, since the electric field is formed at the outer portion of the cell as described with reference to FIG. 2, an electric field appears between the cells as shown in FIG. Therefore, it can be seen that there is no significant problem in forming an electric field even if a through hole is formed at the center of the cell.

Korean Registered Patent No. 10-1304787 (entitled " Capacitive touch circuit pattern "

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a printed circuit board (PCB) structure in which an inner portion of a touch panel, And to provide a point light touch pad for an icon using an LDS method.

Another object of the present invention is to provide a touch pad for an icon light using an LDS method in which a cell in a diamond structure type of a touch panel is bent to increase the amount of charge and the outer portion is protruded so as to form a through hole, .

Another object of the present invention is to provide a printed circuit board (PCB) formed on the lower surface of the touch panel, which can secure a sufficient charge amount because the above- To provide a touch pad for an icon light using an LDS method in which a light emitted by an LED of a PCB (Light Emitting Diode) is passed through a through hole of a touch panel and is transmitted through a diffuser or an inclined surface to enhance an aesthetic sensation will be.

According to an aspect of the present invention, there is provided an icon light touch pad using an LDS method, including: a disk-shaped printed circuit board for processing a touch signal input from a user and emitting an LED formed therein; A plurality of LEDs arranged on a top surface of the printed circuit board and each having a diamond-shaped conductive plate connected in a four-sided manner; a through hole is provided in an upper portion of the LED, The through hole being disposed at the center of the cell; And a glass disposed on the touch panel and configured to cover the printed circuit board and the touch panel and made of a dielectric material. The touch panel may include a circular protrusion formed on an outer circumferential surface of the touch panel so as to cover the printed circuit board. The protrusion may contact a contact formed on an upper portion of the printed circuit board, An electrode for collecting a signal of the touch panel may be formed on the protrusion so as to be in contact with the contact.

The touch panel may be configured such that a curvature that widens the surface area is formed on the outer surface of the diamond-shaped cell.

A recess may be formed in the upper plate of the touch panel and a recess may be formed in the upper plate of the glass corresponding thereto. And a plurality of diffuser panels formed with protrusions to be inserted into the through holes and extending from the protrusions between the upper portion of the touch panel and the glass.

And a diffuser panel having a plurality of protrusions to be inserted into the predetermined holes, and a plate extending from the plurality of protrusions to cover the entire touch panel.

The touch panel is configured such that a cap signal generated for each diamond-shaped cell is generated by touching a diamond-shaped conductor plate formed on the upper surface, and a via hole for transmitting the cap signal to the lower surface is formed in each cell .

According to an aspect of the present invention, there is provided an icon light touch pad using an LDS method, including: a disk-shaped printed circuit board for processing a touch signal input from a user and emitting an LED formed therein; A plurality of through holes are formed in a portion of the cell in contact with the printed circuit board and the through holes are extended in an inclined plane, And the through hole is configured to guide the light of the LED of the printed circuit board formed on the lower surface to transmit the light of the LED Touch panel; And a glass disposed on the touch panel and configured to cover the printed circuit board and the touch panel and made of a dielectric material.

The touch panel may include a circular protrusion formed on an outer circumferential surface of the touch panel so as to cover the printed circuit board. The protrusion may contact a contact formed on an upper portion of the printed circuit board, A protrusion is formed and an electrode for collecting a signal of the touch panel is formed on the protrusion so as to contact the contact.

The touch panel may be configured such that a curvature that widens the surface area is formed on the outer periphery of the diamond-shaped cell.

A recess may be formed in the upper plate of the touch panel and a recess may be formed in the upper plate of the glass corresponding to the recess.

The touch panel is configured such that a cap signal generated for each diamond-shaped cell is generated by touching a diamond-shaped conductor plate formed on the upper surface, and a via hole for transmitting the cap signal to the lower surface is formed in each cell .

Therefore, in order to provide a touch recognition function, the touch pad of the icon light point lighting using the LDS method of the present invention is constituted by a touch pad, and the inner portion of the touch panel contacting the printed circuit board (PCB) So that it is suitable for the mass production system. Further, the touch pad for an icon light point using the LDS method of the present invention comprises an LED on a printed circuit board (PCB), and light emitted by the LED passes through the touch panel to transmit light through the diffuser There is an effect that the esthetic sense of the module including the touch panel is increased.

The touch pad for icon illumination using the LDS method of the present invention has the effect of increasing the amount of charge generated by generating a curvature along the outer periphery of the cell, which is the conductive plate of the diamond structure of the touch panel, and increasing the sensitivity by forming a hole in the inside.

The touch pad for the point light of the icon using the LDS method of the present invention is formed by bending the above-described outer portion even if a hole is formed at the center of the cell of the diamond structure type of the touch panel, so that a sufficient amount of charge can be secured.

The touch pad for icon lighting using the LDS method of the present invention comprises an LED on a printed circuit board (PCB) formed on the lower surface, and the light emitted by the LED passes through the through hole of the touch panel, So that aesthetic sense is enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing distribution of charges generated in a cell constituted of a diamond-shaped conductor by a general repulsive force. Fig.
Figure 2 shows an electric field formed between cells of a typical diamond panel.
3 is a cross-sectional view illustrating a configuration of a module according to an embodiment of the present invention;
FIG. 4 is a plan view and a bottom view showing the configuration of the touch pad of FIG. 1 according to an embodiment of the present invention; FIG.
5 is a cross-sectional view illustrating a cross section of the touch pad of FIG. 1 according to an embodiment of the present invention.
6 is a cross-sectional view showing a configuration of a module according to another embodiment of the present invention;
7 is a cross-sectional view illustrating a configuration of a module configured using a touch panel according to another embodiment of the present invention.
FIG. 8 is a top view and a bottom view of a touch panel illustrating a configuration of a touch pad according to another embodiment of the present invention. FIG.

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

FIG. 3 is a cross-sectional view illustrating the configuration of a touch pad for an icon light point light using the LDS method according to an exemplary embodiment of the present invention. FIG. 4 is a cross- FIG. 5 is a cross-sectional view illustrating a touch pad of FIG. 3 according to an embodiment of the present invention. Referring to FIG.

3 to 5, a module 100 having a touch panel according to the present invention includes a printed circuit board 110, a touch panel 120, diffusers 130 and 135, and a glass 140 .

First, a printed circuit board 110 includes a light emitting diode (LED) 112 that processes a touch signal input from a user and emits light inside the substrate.

The printed circuit board 110 processes a receiver (RX) signal and a transmitter (TX) signal in a CAP method. In addition, when the device module 100 including the touch pad, such as a jog shuttle, rotates, it recognizes the rotated information and converts it into an electrical signal through an encoder incorporated in the printed circuit board 110 and transmits the electrical signal. The printed circuit board 110 processes the corresponding signals according to the degree to which the module 100 is rotated. For example, the increase / decrease of the volume can be controlled.

The printed circuit board 110 includes a built-in LED 112, and the LED 112 emits light as is known. The light emitted by the LED 112 allows the module 100 itself to emit light when the periphery of the module 100 is dark and allows the user to use the module 100 more conveniently when the module 100 is operated. In addition, when the periphery of the module 100 is bright, a light can be emitted to give a luxurious feeling.

The touch panel 120 is disposed at an upper portion of the printed circuit board 110 and includes a through hole 122 at an upper portion of the LED 112 to recognize the touch input from the user and transmit the light of the LED 112 .

The touch panel 120 is formed by forming a circular extending surface 124 along the outer circumferential surface so as to cover and cover the printed circuit board 110. The contact panel 120 has a contact point formed on the upper part of the outer periphery of the circular printed circuit board 110, A plurality of protrusions 126 are formed along a point where the touch panel 120 contacts the extension surface 124 at a substantially right angle so as to contact the protrusion 126 and the touch panel 120, The protruding electrode 128 may be formed so as to contact the contact 114. On the other hand, on the upper part of the touch panel 120, a cell 121, which is a diamond-shaped pattern, is formed, and conductive wires 123 connected to the electric wire via a via hole 125 are printed.

 The cell 121, the lead 123 and the lead 123 of the via hole 125 can be printed by the LDS (Laser Diect Structuring) method as described above.

6 is a view showing a shape of a touch pad according to an embodiment of the present invention compared with a general diamond cell.

Referring to FIG. 6, the outer surface of the diamond-shaped cell 121 formed on the touch panel 120 may be configured to be widened to enlarge the surface area. The shape of the bend may be a curve or a polygonal bend such as a triangle. In FIG. 6, although the indentations formed in the diamond-shaped cells are shown as triangular shapes, they may be in the form of curved, rectangular, or rhombic shapes. In addition, the upper panel of the touch panel 120 may be formed in a recessed shape to improve the touch feeling.

The touch panel 120 prints the cell 121 on which the conductive material of the upper surface is printed and the printed conductive line 123, which is a conductive material of the lower surface, using the LDS. The via hole 125 connecting the leads of the upper surface and the lower surface is also printed using the LDS. And electrically connected to the protruding electrode 128 formed along the inner circumferential surface of the touch panel 120 by using the LDS.

The projecting electrode 128 of the touch panel 120 and the contact 114 of the printed circuit board 110 are arranged to abut against each other to eliminate the need for soldering. Accordingly, since the module 100 can be assembled easily without soldering, mass production is easy.

Meanwhile, the light of the plurality of LEDs 112 formed on the printed circuit board 110 can be transmitted to the glass 140 through the through holes 122. In this way, light from the LED 112 can pass through the through hole 122. However, in this case, the through hole 122 may be seen through from the outside through the glass 140, which may not be aesthetically pleasing.

Diffusers 130 and 135 for dispersing light between the touch panel 120 and the glass 140 can be configured. On the other hand, the glass 140 may not be a completely transparent body. Therefore, when only one of the glass 140 and the diffusers 130 and 135 is configured as a translucent state, the inner hole 122 is not seen through. In addition, as described above, the sense of beauty can be enhanced by the light dispersed through the diffusers 130 and 135. [

The diffuser 130 according to one embodiment allows light of the LED 112 transmitted through the through hole 122 of the touch panel 120 to be dispersed to the surroundings. The diffuser 130 includes a protrusion 132 and a diffusion plate 134. The protrusion 132 is inserted into the through hole 122 to induce light from the LED 112 formed in the lower portion. The diffuser plate 134 diffuses light led through the protrusions 132 to the upper glass 140. That is, the light emitted from the LED 112 is transmitted to the upper portion of the touch panel 120 through the protrusion 132 of the diffuser 130, and the light is transmitted to the upper portion through the diffusion plate 134. At this time, the diffuser 130 is made of a transparent or semitransparent material and has a dielectric property.

7 is a cross-sectional view illustrating the configuration of a module configured using a touch panel according to another embodiment of the present invention.

Referring to FIG. 7, the diffuser 135 may be formed on the upper surface of the touch panel 120 and may be formed in the form of a single diffusion plate 139 to cover the entire touch panel 120, according to another embodiment. Each protrusion 137 to be inserted into the through hole 112 may be configured to extend from the lower surface of the diffuser 135. That is, the diffuser 135 may be configured in the shape of a circular plate, and each protrusion 137 may be configured to be inserted into the through hole 122, respectively. At this time, the diffuser 130 is made of a transparent or semitransparent material and has a dielectric property.

The touch panel 120 includes a via hole 125 for generating a cap signal for each pattern 121 printed on each touch panel 120 generated by a touch operation and transmitting the cap signal to the lower surface of the touch panel 120 .

The glass 140 is composed of a dielectric disposed on the upper portion of the diffusers 130 and 135 and is configured to cover the printed circuit board 110, the touch panel 120, and the diffusers 130 and 135 in the form of a housing. In addition, the glass 140 corresponds to the touch panel 120, and a recess is formed in the upper plate to form a concave shape. The glass 140 and the touch panel 120 are formed in a concave shape so that the user can easily recognize the module 100 with a simple touch and increase the touch feeling.

An arrow-shaped icon may be formed on the glass 140. The module 100 can be rotated to adjust the volume of the music. When the user touches the upper part of the glass 140, the touch panel 120 recognizes the input of a letter or the like. For example, when the navigation is executed and the search is activated, the location search can be performed by inputting the text on the upper part of the module 100. [ It can also be configured to search for songs using module 100 after playing music, opening playlists and activating a search window.

FIG. 8 is a top view and a bottom view of a touch panel illustrating a configuration of a touch pad according to another embodiment of the present invention.

Referring to FIG. 8, the touch panel 220 is disposed on the upper surface of the printed circuit board 110, and the diamond-shaped cells 221 are connected to each other in four directions. The touch panel 220 recognizes the touch input from the user.

A through hole 222 is formed in a portion of the cell 221 that contacts the printed circuit board 110 and the through hole 222 is extended to the inclined surface 223 and extends to the inclined surface 223, The outer surface of the surface contacting with the outer surface is formed with a curved portion 224 in the outward direction. The inclined surface 223 of the touch panel 220 guides the light transmitted from the LED 112 through the through hole 222 to be diffused upward. On the other hand, the backside is connected to the via hole and energized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. will be. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: module 110: printed circuit board
120: touch panel 130, 135: diffuser
140: Glass

Claims (12)

A disk-shaped printed circuit board for processing a touch signal inputted from a user and emitting an LED formed therein;
A plurality of LEDs arranged on a top surface of the printed circuit board and each having a diamond-shaped conductive plate connected in a four-sided manner; a through hole is provided in an upper portion of the LED, The through hole being disposed at the center of the cell; And
A glass disposed on the touch panel and configured to cover the printed circuit board and the touch panel and made of a dielectric;
The touch panel includes:
A protrusion is formed at a point where the touch panel contacts the extended surface so as to be in contact with a contact formed on an upper portion of the outer periphery of the printed circuit board, And an electrode for collecting a signal of the touch panel is formed on the protrusion so as to be in contact with the contact point.
delete The touch panel of claim 1,
A touch pad for an icon light point light using an LDS method that forms a curvature that widens the surface area on the outer surface of a diamond-shaped cell. The method according to claim 1,
Wherein a recess is formed on an upper plate of the touch panel and a recess is formed on a glass plate corresponding to the recess. The method according to claim 1,
And a plurality of diffuser panels formed with protrusions to be inserted into the through holes and extending from the protrusions between the upper part of the touch panel and the glass. The method according to claim 1,
And a diffuser panel having a plurality of protrusions to be inserted into the through holes and extending from the plurality of protrusions to cover the entire touch panel, The touch panel of claim 1,
A capping signal is generated for each diamond-shaped cell by touching a diamond-shaped conductor plate formed on the upper surface, and a via hole for transmitting the cap signal to the lower surface is formed in each cell. Icon Light Point Light Touchpad. A disk-shaped printed circuit board for processing a touch signal inputted from a user and emitting an LED formed therein;
A plurality of through holes are formed in a portion of the cell that is in contact with the printed circuit board and the through holes are extended in an inclined plane, A touch panel configured to recognize a touch input from a user and guide the light of an LED of a printed circuit board formed on a lower surface of the through hole to transmit light of the LED; And
And a glass disposed on the touch panel and configured to cover the printed circuit board and the touch panel, the touch pad including a dielectric. The touch panel of claim 8,
A protrusion is formed at a point where the touch panel contacts the extended surface so as to be in contact with a contact formed on an upper portion of the outer periphery of the printed circuit board, And an electrode for collecting a signal of the touch panel is formed on the protrusion so as to be in contact with the contact point. The touch panel of claim 8,
A touch pad for an icon light point light using an LDS method that forms a curvature that widens the surface area on the outer surface of a diamond-shaped cell. 9. The method of claim 8,
Wherein a recess is formed on an upper plate of the touch panel and a recess is formed on a glass plate corresponding to the recess. 9. The method of claim 8,
The touch panel is configured such that a cap signal generated for each diamond-shaped cell is generated by touching a diamond-shaped conductive plate formed on the upper surface, and a via hole for transmitting the cap signal to the lower surface is formed in each cell Touchpad for icon light point light using LDS method.

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