TWI476660B - Touch screen panel for display device and method of manufacturing the same - Google Patents

Description

Touch screen panel for display device and manufacturing method thereof

The present invention relates to a touch screen panel for a display device, and more particularly to a touch screen panel having reduced thickness and weight and increased throughput in a manufacturing process.

Various input devices such as a keyboard, a mouse, a trackball, a joystick, and a digitizer are provided on various home appliances or communication devices to receive user input. However, in many types of input devices, a user has to learn how to use the input device, making it difficult for the user to operate the product. Moreover, the input device occupies a separate space that increases the overall size of the appliances or devices that incorporate the input devices. Therefore, there has been an increased demand for one of the simple and convenient input devices.

A touch screen panel is one that reduces or eliminates one of the disadvantages of other types of input devices. The touch screen panel allows the user to provide user input by directly using the user's finger or a touch screen. Touch screen panels are currently being applied to various display devices due to their simple structure and robust operation.

Two types of touch screen panels are commonly used. One department is one Resistive, the other is a capacitive type. The resistive touch screen panel senses the position of the touch portion of the touch and touch screen panel based on a voltage gradient. The voltage gradient depends on the impedance formed in one of the metal electrodes on an upper substrate or a lower substrate. On the contrary, based on the change of the capacitance between the electrodes of the touch screen panel, the capacitive touch screen panel senses the touch and a touch position of the touch portion of the touch screen panel.

Embodiments relate to providing a layer of polymeric material on either side of a substrate formed by an electrode. A touch screen panel includes a first polymer layer on a first surface of a substrate. A plurality of first electrode lines extending along a first direction on the second surface of the substrate are formed on the substrate. A second polymer layer is formed on the first electrode and on the second surface of the substrate. A plurality of second electrodes extend along a second direction on the second polymer layer, and a change in capacitance between the second electrode and the first electrode is detected for sensing a touch on the first polymer layer .

In one embodiment, the second polymer layer is formed with contact holes to expose each of the first electrodes to a routing line.

In one embodiment, the routing circuitry is formed on the second polymer layer and is located in a corresponding contact hole.

In one embodiment, the touch screen panel further includes a conductive auxiliary layer formed on a portion of the routing line in the corresponding contact hole.

In one embodiment, the routing circuitry is from aluminum (Al), aluminum germanium (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), silver (Ag), and silver. The metal of the base alloy is made of a metal selected from the group.

In one embodiment, the first polymer layer and the second polymer layer are made of a single material.

In one embodiment, the first polymer layer and the second polymer layer are formed from an ultraviolet curable resin or a thermosetting resin.

In one embodiment, the substrate is formed from a polymeric material.

In one embodiment, the first electrode and the second electrode are made of indium tin oxide (ITO), indium zinc oxide (IZO), gallium-doped zinc oxide (GZO), metal nanowires, and carbon. A transparent conductive material is selected from the group consisting of a transparent electrode.

In one embodiment, each of the first electrodes has a plurality of crossover wires, each of the second electrodes having a plurality of crossover wires.

10‧‧‧Transparent substrate

100‧‧‧Substrate

131‧‧‧first node

132‧‧‧ first connection

133‧‧‧second node

134‧‧‧Second connection

200‧‧‧Substrate

5‧‧‧Display device components

A‧‧‧electrode part

A1‧‧‧ first binder

A2‧‧‧Second binder

B‧‧‧Route line section

C‧‧‧Patch part

CH‧‧‧Contact hole

CP‧‧‧ conductive auxiliary layer

DP‧‧‧ display device

HC1‧‧‧ polymer layer

HC2‧‧‧hard coating

RP1‧‧‧first mat

RP2‧‧‧second mat

RS‧‧‧first electrode

RW1‧‧‧first route line

RW1a‧‧‧ first floor

RW1b‧‧‧ second floor

RW2‧‧‧Second routing line

RX1‧‧‧ metal wire

SF‧‧‧ sacrificial film

TH‧‧‧through hole

TP‧‧‧ touch screen panel

TS‧‧‧ drive electrode

TX1‧‧‧metal wire

TX2‧‧‧ metal wire

W‧‧ ‧ window cover

1 is a cross-sectional view of a display device assembly including a capacitive touch screen panel and a display device.

2A is a diagram of one of the touch screen panels for a display device according to an embodiment view.

Fig. 2B is a cross-sectional view taken along line I-I' of the touch screen panel of Fig. 2A.

3A is a top plan view of one of the touch screen panels for a display device in accordance with another embodiment.

Fig. 3B is a cross-sectional view of the line I-I' along the touch screen panel of Fig. 3A.

4A is a top plan view of one of the touch screen panels for a display device in accordance with another embodiment.

Figure 4B is a cross-sectional view taken along line II-II' of the touch screen panel of Figure 4A.

Figure 5A is a top plan view of one of the processes for forming a drive electrode for a touch screen panel for a display device in accordance with an embodiment of Figures 2A and 2B.

5B and 5C are cross-sectional views along line I-I' of line 5A, illustrating a touch screen for forming a display device in accordance with embodiments of FIGS. 2A and 2B, in accordance with an embodiment. One of the sensing electrodes of the panel.

6A is a top plan view of a process for forming an insulating layer having a first contact hole exposing a portion of the sensing electrode of the touch screen panel, in accordance with an embodiment.

6B through 6D are cross-sectional views along line II' of FIG. 6A, illustrating a process for forming an insulating layer having an exposed touch panel panel, in accordance with an embodiment. a first contact hole of a portion of the electrode.

7A is a top plan view of one of a first routing line, a drive electrode, a second routing line, and a hard coating for forming a touch screen panel for a display device in accordance with one embodiment.

7B and 7C are cross-sectional views along line II' of FIG. 7A, illustrating a first routing line, a driving electrode, and the like for forming a touch screen panel for a display device, in accordance with an embodiment. One of the second routing lines.

8A is a top plan view of one of the processes for forming a hard coating of a touch screen panel for a display device in accordance with one embodiment.

Figure 8B is a cross-sectional view along line I-I' of Figure 8 illustrating a process for forming a hard coating of a touch screen panel for a display device in accordance with one embodiment.

Figure 9 is a cross-sectional view showing one of the conductive auxiliary layers CP additionally formed after the contact holes are formed through the processes of Figs. 6B to 6D in accordance with one embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Throughout the specification, the same reference numerals will be used to refer to the same elements.

1 is a cross-sectional view of an exemplary display device assembly 5 including a capacitive touch screen panel TP and a display device DP. The touch screen panel TP includes a plurality of driving electrodes TS and a plurality of sensing electrodes RS. The driving electrode TS is formed on one surface of a transparent substrate 10. The sensing electrode RS is formed on the other surface of the transparent substrate 10 and intersects the driving electrode TS.

A window cover W is attached to the upper surface of the touch screen panel TP formed by the sensing electrode RS through the first adhesive A1. The window cover W is typically made of a film that provides rigidity to the display device assembly 5. In order to provide sufficient rigidity to the display device assembly 5, the window cover W typically has a certain thickness. The display device DP is attached to the lower surface of the touch screen panel TP through the second adhesive A2 (where the drive electrodes TS are formed).

However, the weight and thickness of the cover window W contribute to the total weight and total thickness of the display unit assembly 5. Moreover, the process of combining the cover window W to the sensing electrode RS and the transparent substrate may cause defects in reducing the yield of the display device assembly 5.

Embodiments relate to providing a polymer layer on both sides of a transparent substrate in a capacitive touch screen panel. By replacing a thicker and heavier window cover with a thinner and lighter polymer layer, the total weight of the touch screen panel can be reduced while maintaining the stiffness of the touch screen panel. Moreover, the process of forming a polymer layer eliminates the need to use an adhesive to protect a cover window to a transparent substrate, resulting in fewer defects and increased throughput of the touch screen panel.

2A is a top plan view of one of the touch screen panels for a display device in accordance with an embodiment. Fig. 2B is a cross-sectional view taken along line I-I' of the touch screen panel of Fig. 2A. The touch screen panels of FIGS. 2A and 2B are divided into three main parts: an electrode portion A, a routing line portion B, and a pad portion C.

The electrode portion A of the touch screen panel may include, among other components, a substrate 100, a plurality of first electrodes RS (hereinafter referred to as "first electrodes RS") serving as sensing electrodes, and used as driving electrodes. A plurality of second electrodes TS (hereinafter referred to as "second electrodes TS"), one polymer layer HC1 (hereinafter referred to as "insulating layer HC1") formed on one surface of the substrate 100, formed on the other surface of the substrate Another polymer layer on the HC2 (hereinafter referred to as "absolute Edge layer HC2").

The first electrode RS is formed on one surface of the substrate 100 and extends in parallel to a first direction (for example, the Y-axis direction). A plurality of second electrodes TS are formed on the insulating layer HC1 disposed to cover the first electrode RS, and extend in a second direction (for example, an X-axis direction) different from the first direction, and further the first electrodes RS and The two electrodes TS cross. The first electrode RS and the second electrode TS constituting the touch screen panel are formed on one side of the substrate 100, and are electrically insulated from each other by the insulating layer HC1. A hard coating layer HC2 made of the same material as the insulating layer HC1 is formed on the other side of the substrate 100.

The substrate 100 may be formed of a flexible polymer material such as polyethylene terephthalate (PET). The first electrode RS and the second electrode TS may be made of a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), gallium-doped zinc oxide (GZO), a metal nanowire, or a carbon-based transparent electrode. Formed. The insulating layer HC1 and the hard coating layer HC2 are composed of, for example, a typical ultraviolet (UV) curing resin having excellent curability, a nanometer cerium oxide composite UV curing resin, and a sesquioxane (SSQ) based UV. One of the cured resins is formed of a UV curable resin. A typical UV curable resin has one of the chemical structures shown in the following formula (1), the nano cerium oxide composite UV curable resin has one of the chemical structures shown in the formula (2), and the SSQ-based UV curable resin has the following One of the chemical structures shown in formula (3).

The routing line portion B may include, among other components, a plurality of first routing lines RW1 and a plurality of second routing lines RW2 formed on the insulating layer HC1 around the outside of the electrode portion A of the substrate 100. A plurality of first routing lines RW1 are connected to the exposed plurality of first electrodes RS via contact holes CH of the insulating layer HC1. A plurality of second routing lines RW2 are directly connected to a plurality of second electrodes TS formed on the insulating layer HC1. The hard coating layer HC2 is formed on the other surface of the substrate 100 corresponding to the region formed by the first routing line RW1 and the second routing line RW2. The first routing line RW1 and the second routing line RW2 are made of, for example, aluminum (Al), aluminum germanium (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), silver (Ag). And the formation of a metal of a silver-based alloy.

The pad portion C may include, among other components, a plurality of first pads RP1 formed in the vicinity of the routing line portion B of the substrate 100. A plurality of second pads RP2. Each of the first pads RP1 is connected to a first electrode RS through a first routing line RW1. Each of the plurality of second pads RP2 is connected to a second electrode TS through a second routing line RW2. The first pad RP1 and the second pad RP2 are also composed of, for example, aluminum (Al), aluminum lanthanum (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), silver (Ag). ), and the formation of a metal of a silver-based alloy.

3A is a top plan view of one of the touch screen panels for a display device in accordance with another embodiment. Fig. 3B is a cross-sectional view taken along line I-I' of the touch screen panel of Fig. 3A. The touch screen panel for the display device of FIGS. 3A and 3B is divided into an electrode portion A, a routing line portion B, and a pad portion C.

The electrode portion A may include, among other components, a plurality of first electrodes RS formed on one surface of the substrate 100, and a plurality of second electrodes TS crossing the plurality of first electrodes RS, having the first insertion An insulating layer HC1 between the electrode RS and the second electrode TS and another hard coating layer HC2 formed on the other surface of the substrate. The first electrode RS is formed on one surface of the substrate 100 and extends in parallel to a first direction (for example, the Y-axis direction). A plurality of second electrodes TS are formed on the insulating layer HC1 disposed to cover the first electrode RS, and extend in parallel with a second direction (for example, the X-axis direction) to cross the first electrode RS. The first electrode RS and the second electrode TS constituting the touch screen panel are formed on one side of the substrate 100, and The hard coating layer HC2 made of the same material as the insulating layer HC1 is electrically insulated from each other through the insulating layer HC1, and is formed on the other side of the substrate 100.

Each of the plurality of first electrodes RS is formed to include a plurality of nets of a plurality of horizontal metal lines Rx1 crossing the vertical metal lines Rx2. Each of the plurality of second electrodes TS is formed as a net of a plurality of horizontal metal wires Tx1 crossing a plurality of vertical metal wires Tx2.

In the embodiments of FIGS. 3A and 3B, since the mesh pattern can be formed by a combination of one of the electrode lines, the mesh formed by the metal wires passing through the first electrode RS and the second electrode TS can be manufactured in various shapes. . Although the mesh pattern of Fig. 3A is a stripe shape, the mesh pattern may have other shapes such as a triangle, a rectangle, a diamond, a polygon, a circle, an ellipse or a dome shape, or a combination thereof.

In the touch screen panels of FIGS. 3A and 3B, the substrate 100 is formed of a flexible polymer such as polyethylene terephthalate (PET). The metal lines Rx1 and Rx2 of the first electrode RS and the metal lines Tx1 and Tx2 of the second electrode TS are made of, for example, aluminum (Al), aluminum lanthanum (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu). , chromium (Cr), silver (Ag), and metal based on silver-based alloys. As in the embodiments of FIGS. 2A and 2B, the insulating layer HC1 and the hard coating layer HC2 are cured by a typical ultraviolet (UV) curing resin such as one having excellent curability, and a nanometer cerium oxide composite. Resin, and UV curable resin, one of the sesquioxalate (SSQ) based UV curing resins Formed. Alternatively, the insulating layer HC1 and the hard coating layer HC2 may be formed of a thermosetting resin.

The routing line portion B may include a plurality of first routing lines RW1 and a plurality of second routing lines RW2 formed on the insulating layer HC1 around the outside of the electrode portion A of the substrate 100, among other components. Each of the plurality of first routing lines RW1 is connected to at least one of the metal lines Rx1, Rx2 via a contact hole CH of the insulating layer HC1. Each of the plurality of second routing lines RW2 is directly connected to at least one of the metal lines Tx1, Tx2 of the second electrode TS formed on the insulating layer HC1. A hard coating layer HC2 extending from the electrode portion A is formed on the other surface of the substrate 100 formed by the first routing line RW1 and the second routing line RW2. The first routing line RW1 and the second routing line RW2 are made of, for example, aluminum (Al), aluminum germanium (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), silver (Ag). And the formation of a metal of a silver-based alloy.

The pad portion C may include, among other components, a plurality of first pads RP1 and a plurality of second pads RP2 formed in the vicinity of the routing line portion B of the substrate 100. Each of the plurality of first pads RP1 is connected to at least one of the metal lines Rx1 and Rx2 of one electrode RS through a plurality of first routing lines RW1. Each of the plurality of second pads RP2 is connected to at least one of the metal lines Tx1, Tx2 of the second electrode TS through a plurality of second routing lines RW2. The first pad RP1 and the second pad RP2 are also made of, for example, aluminum (Al), aluminum lanthanum (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), Silver (Ag), and a metal of a silver-based alloy.

In the touch screen panels of FIGS. 3A and 3B, the touch electrodes are formed of a low resistivity metal. Therefore, the impedance and capacitance of the touch screen panel can be reduced. This reduces the time constant and thus results in improved touch sensitivity. Also, this provides an advantage when the size of the touch screen panel is made larger.

4A is a top plan view of one of the touch screen panels for a display device in accordance with another embodiment. Figure 4B is a cross-sectional view taken along line II-II' of the touch screen panel of Figure 4A. The touch screen panel of the display device of FIGS. 4A and 4B is divided into an electrode portion A, a routing line portion B, and a pad portion C.

The electrode portion A may include, among other components, a plurality of first electrodes RS formed on one surface of a substrate 200, and a plurality of second electrodes TS crossing the plurality of first electrodes RS, having the first insertion An insulating layer HC1 between the electrode RS and the second electrode TS and another hard coating layer HC2 formed on the other surface of the substrate.

A plurality of first electrodes RS are formed on the substrate 100 and extend along a first direction (for example, the Y-axis direction). Each of the first electrodes RS may be formed to have a first node 131 having a shape of a triangle, a rectangle, a diamond, a polygon, a circle, an ellipse, or a combination thereof. The first connection portion 132 is connected to the adjacent electrode node 131. First node 131 and first connection The portions 132 together form a first electrode RS. Although the first electrode RS in FIG. 4A is used as a sensing electrode, the first electrode RS may also be configured as a driving electrode.

A plurality of second electrodes TS are formed on the insulating layer HC1 disposed to cover the first electrode RS, and extend along a second direction (for example, the X-axis direction) to cross the first electrode RS. Each of the second electrodes TS includes a second node 133 having a shape of a triangle, a rectangle, a diamond, a polygon, a circle, an ellipse or a combination thereof. Similar to the first node 131 and the first connection portion 132, the second connection portion 134 is connected adjacent to the second node 133. The second node 133 and the second connection portion 134 are connected adjacent to the second node 133. The second node 133 and the second connection portion 134 together form a second electrode TS. Although the plurality of second electrodes TS in the FIG. 4A are used as the sensing electrodes, the second electrodes TS can also function as the driving electrodes. If a plurality of first electrodes RS are used as the sensing electrodes, a plurality of second electrodes TS are used as the driving electrodes. If a plurality of first electrodes RS are used as the driving electrodes, the plurality of second electrodes TS function as sensing electrodes.

The first electrode RS and the second electrode TS are formed on the same side of the substrate 200, and are electrically insulated from each other by the insulating layer HC1. A hard coating layer HC2 made of the same material as the insulating layer HC1 is formed on the other side of the substrate 200.

As in the embodiments of FIGS. 2A and 2B, the substrate 200 may be formed of a flexible polymer such as polyethylene terephthalate (PET). The first electrode RS and the second electrode TS may be made of, for example, indium tin oxide (ITO), indium zinc oxide (IZO), gallium-doped zinc oxide (GZO), metal nanowire, or a transparent conductive material of one of carbon-based transparent electrodes. The insulating layer HC1 and the hard coating layer HC2 are composed of, for example, a typical ultraviolet (UV) curing resin having excellent curability, a nanometer cerium oxide composite UV curing resin, and a sesquioxane (SSQ) based UV. One of the cured resins is formed of a UV curable resin.

The routing line portion B may include a plurality of first routing lines RW1 and a plurality of second routing lines RW2 formed on the insulating layer HC1 around the outside of the electrode portion A of the substrate 200, among other components. A plurality of first routing lines RW1 are connected to at least one of the metal lines Rx1, Rx2 via a contact hole CH of the insulating layer HC1, and a plurality of second routing lines RW2 are directly connected to the second electrode TS formed on the insulating layer HC1. At least one of the metal wires Tx1, Tx2. The hard coating layer HC2 extending from the electrode portion A is formed on the other surface of the substrate 200 formed by the first routing line RW1 and the second routing line RW2. The first routing line RW1 and the second routing line RW2 are made of, for example, aluminum (Al), aluminum germanium (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), silver (Ag). And the formation of a metal of a silver-based alloy.

The pad portion C may include, among other components, a plurality of first pads RP1 and a plurality of second pads RP2 formed in the vicinity of the routing line portion B of the substrate 200. Each of the plurality of first pads RP1 is connected to a first electrode RS through a first routing line RW1. Each of the plurality of second pads RP2 is connected to a second electrode TS through a second routing line RW2. the first The pad RP1 and the second pad RP2 may be made of aluminum (Al), aluminum lanthanum (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium (Cr), silver (Ag), and silver. The metal of the base alloy is formed.

Figure 5A is a top plan view of one of the processes for forming a drive electrode for a touch screen panel for a display device in accordance with the embodiments of Figures 2A and 2B. 5B and 5C are cross-sectional views taken along line I-I' of the 5A, illustrating the sensing for forming a touch screen panel for a display device according to the embodiments of FIGS. 2A and 2B. One of the processes of the electrode. A first transparent conductive layer is formed on one surface of the substrate 100 made of, for example, a polymer material such as polyethylene terephthalate (PET). Then, a plurality of first electrodes RS or sensing electrodes RS (hereinafter referred to as first electrodes) are patterned to extend in parallel to a first direction (for example, the Y-axis direction) as shown in FIG. 5A. In one embodiment, the plurality of first electrodes RS may be formed on one surface of the substrate 100 by injecting metal using an inkjet device.

As shown in FIG. 5C, a sacrificial film SF is formed in a predetermined region of the first electrode RS. The sacrificial film SF is formed at a position where the contact hole is to be formed in an insulating layer to avoid damage of the first electrode RS in the formation of the contact hole. It should be noted that the sacrificial film SF can be omitted.

6A is a top view of a process for forming an insulating layer in accordance with the embodiments of FIGS. 2A and 2B, the insulating layer having an exposure a first contact hole of a portion of the sensing electrode of the touch screen panel of the display device. 6B to 6D are cross-sectional views taken along line II' of FIG. 6A according to the embodiment of FIGS. 2A and 2B, illustrating a process for forming an insulating layer, the insulating layer being exposed. a first contact hole for sensing a portion of the sensing electrode of the touch screen panel of the device.

An insulating layer HC1 having a contact hole CH is formed on the entire surface of one of the substrates 100 formed by the first electrode RS, and a portion of the first electrode RS is exposed. Specifically, as shown in FIG. 6B, such as a typical ultraviolet (UV) curing resin having excellent curability, a nanometer cerium oxide composite UV curing resin, and a sesquioxane (SSQ) based UV A curing resin, or a thermosetting resin, one of UV curable resins is coated as an insulating layer on the front surface of the substrate 100 formed by the first electrode RS and a sacrificial layer SF.

As shown in FIG. 6C, the contact hole CH is formed to expose a portion of the first electrode RS, or is formed by the insulating layer, the first electrode, and the through hole TH of the substrate 100. FIG. 6C shows that the sacrificial film SF is removed in the formation of the contact hole CH or the through hole TH. In the case where the through holes TH as shown in FIG. 6D are formed, the sacrificial film SF may not be initially formed.

Although a photolithography method can be used to form the contact hole CH or the via hole TH in the insulating layer HC1. It is also possible to use a carbon dioxide (CO2) laser drilling method, a screen printing method, an imprinting method, a dry film resist lamination method, and an electro-hydraulic-dynamic (EHD) method. The contact hole CH is formed in the insulating layer HC1.

7A is a first routing line, a driving electrode, a second routing line, and a hard coating layer for forming a touch screen panel for a display device according to the embodiments of FIGS. 2A and 2B. A top view of the process. 7B and 7C are cross-sectional views taken along line I-I' of FIG. 7A in accordance with the embodiments of FIGS. 2A and 2B, illustrating a second embodiment for forming a touch screen panel for a display device. A routing line, a drive electrode, and a second routing line process. A first conductive layer made of a metal such as Al, AlNd, Mo, MoTi, Cu or Cr is deposited on one of the insulating layers CH1 having the contact holes CH, and the first conductive layer is processed using a mask. The lithography process is patterned. Therefore, as shown in FIGS. 7A and 7B, a plurality of first routing lines RW1 respectively connected to the plurality of first electrodes RS via the contact holes CH and a plurality of first ones connected to the plurality of first routing lines RW1, respectively The pad RP1 is formed on the insulating layer HC1.

Referring to FIGS. 7A to 7C, a second transparent conductive layer is formed on the insulating layer HC1 disposed to cover the first electrode RS, and then patterned. Therefore, the plurality of second electrodes TS are formed along a second direction (for example, the X-axis direction) crossing a first direction (for example, the Y-axis direction). a first layer RW 1a of the first routing line RW1 contacting the exposed first electrode RS via the contact hole CH, and a first layer (not shown) of the first pad RP1 extending from the first layer of the first routing line One of the second routing lines RW2 extending from the second electrode TS A layer (not shown), and a first layer (not shown) of a second pad RP2 extending from a first layer (not shown) of the second routing line RW2 are also formed. A second layer RW1b of one of the first routing lines RW1 is formed on the first layer RW1a. A second layer (not shown) of one of the first pads RP1 is also formed on the first layer of the first pads RP1, and a second layer (not shown) of the second routing line RW2 is also formed on the second route. A first layer of the wire RW2 and a second layer (not shown) of the second pad RP2 are also formed on the first layer of the second pad RP2.

Figure 8A is a top plan view of one of the processes for forming a hard coating of a touch screen panel in accordance with one embodiment. Figure 8B is a cross-sectional view along line I-I' of Figure 8, illustrating a process for forming a hard coating of a touch screen panel in accordance with one embodiment. The substrate 100 formed by the second electrode TS is inverted, and then a hard coating layer HC2 is formed on the other surface of the substrate 100. The hard coating layer HC2 is formed of the same material as the insulating layer HC1.

Figure 9 is a cross-sectional view showing one of the conductive auxiliary layers CP additionally formed after the contact holes are formed through the processes described above with reference to Figs. 6B to 6D. The conductive auxiliary pattern CP may be formed by a screen printing method, a configuration method, an inkjet method, or an electroplating method, by filling a metal ink in the contact hole CH or the through hole TH, and the conductive auxiliary pattern CP may be made of Ag or Cu. Waiting for it to form. Generally, a burr can be formed in a process of forming a contact CH or a via TH. When the burrs are formed, moisture can penetrate along the interface of the contact hole CH or the through hole TH. Such moisture penetration can cause the first road Corroded or interrupted by the line RW1, thereby reducing the contact performance of the first routing line RW1 and the first electrode RS. The conductive auxiliary pattern CP is formed on the first routing line RW1, the first routing line RW1 is formed in the contact hole CH or the through hole TH, and the conductive auxiliary pattern CP can avoid moisture permeation from the outside. Therefore, the conductive auxiliary layer CP avoids a decrease in contact performance due to penetration of moisture.

The processes described above with reference to FIGS. 5A to 9 can be applied to the 3A and 3B except for the difference between the first electrode and the second electrode using the metal wire electrodes in the embodiments of FIGS. 3A and 3B. Example. Moreover, the processes described above with reference to FIGS. 5A to 9 can be applied to the embodiments of FIGS. 4A and 4B, except that the first electrode and the second electrode include the difference between the node and the connection portion.

Embodiments advantageously form a polymeric material on either side of a substrate formed by the drive and sense electrodes. By forming a layer of polymeric material on both sides of the substrate, the stiffness of the touch panel can be increased while avoiding the increase in thickness and weight of one of the window covers used in conventional touch screen panels. Moreover, the adhesive for bonding the window cover can be omitted, and the total thickness and total weight of the touch panel are further reduced.

The touch screen panel according to an exemplary embodiment of the present invention can be applied to a display including a liquid crystal display device LCD, a field emission display FED, a plasma display panel PDP, an electroluminescence device EL, and an electrophoretic display.

While the invention has been described with reference to a particular embodiment of the embodiments of the present invention, it will be understood that Therefore, the scope of the invention should be limited only to the claimed claims.

100‧‧‧Substrate

A‧‧‧electrode part

B‧‧‧Route line section

C‧‧‧Patch part

CH‧‧‧Contact hole

HC2‧‧‧hard coating

RP1‧‧‧first mat

RP2‧‧‧second mat

RS‧‧‧first electrode

RW1‧‧‧first route line

RW2‧‧‧Second routing line

TS‧‧‧ drive electrode

Claims (20)

A touch screen panel includes: a substrate having a first surface and a second surface on a side opposite to the first surface; a first polymer layer located on the first surface of the substrate a plurality of first electrodes extending along a first direction on the second surface of the substrate; a second polymer layer on the first electrodes and the second surface of the substrate; And a plurality of second electrodes extending along the second direction on the second polymer layer, and the detected capacitance between the second electrodes and the first electrodes is used for sensing Touch on the first polymer layer. The touch screen panel of claim 1, wherein the second polymer layer is formed with a contact hole to expose each of the first electrodes to a routing line. The touch screen panel of claim 2, wherein the routing line is formed on the second polymer layer and is located in a corresponding contact hole. The touch screen panel of claim 3, further comprising a conductive auxiliary layer formed on a portion of the routing line in the corresponding contact hole. The touch screen panel of claim 2, wherein the routing line is from aluminum (Al), aluminum germanium (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper (Cu), chromium ( A metal selected from the group consisting of Cr), silver (Ag), and a metal of a silver-based alloy. The touch screen panel of claim 1, wherein the first polymer layer and the second polymer layer are made of the same material. The touch screen panel of claim 1, wherein the first polymer layer and the second polymer layer are formed of an ultraviolet curing resin or a thermosetting resin. The touch screen panel of claim 1, wherein the substrate is formed of a polymer material. The touch screen panel of claim 1, wherein the first electrodes and the second electrodes are made of indium tin oxide (ITO), indium zinc oxide (IZO), gallium doped zinc oxide (GZO) ), a metal nanowire, and a carbon-based transparent electrode are selected from the group consisting of a transparent conductive material. The touch screen panel of claim 1, wherein each of the first electrodes has a plurality of crossover wires, each of the plurality of electrodes having a plurality of crossover wires. A method for manufacturing a touch screen panel, the method comprising: forming a first polymer layer on a first surface of a substrate; forming a plurality of first electrodes extending in a first direction on the substrate Forming a second polymer layer on the first electrodes and the second surface of the substrate; forming a plurality of second electrodes extending in a second direction on the second polymer layer, And a method for sensing a change in capacitance between the second electrodes and the first electrodes detected by the touch on the first polymer layer. The method of manufacturing a touch screen panel according to claim 11, further comprising forming a contact hole after forming the second polymer layer on the first electrodes and the second surface of the substrate In the second polymer layer. The method of manufacturing a touch screen panel according to claim 12, wherein the forming the contact hole comprises forming a sacrificial layer on the first electrodes at a position where the contact hole is to be formed. The method of manufacturing a touch screen panel according to claim 12, further comprising forming a routing line on the second polymer layer and located in a corresponding contact hole. The method of manufacturing a touch screen panel according to claim 14, further comprising forming a conductive auxiliary layer on a portion of the routing line in the corresponding contact hole. The method for manufacturing a touch screen panel according to claim 14, further comprising the route line from aluminum (Al), aluminum germanium (AlNd), molybdenum (Mo), molybdenum titanium (MoTi), copper ( A metal selected from the group consisting of Cu), chromium (Cr), silver (Ag), and a metal of a silver-based alloy. The method of manufacturing a touch screen panel according to claim 16, wherein the first polymer layer and the second polymer layer are formed of an ultraviolet curing resin or a thermosetting resin. The method of manufacturing a touch screen panel according to claim 11, wherein the substrate is formed of a polymer material. The method of manufacturing a touch screen panel according to claim 11, wherein the first electrodes and the second electrodes are made of indium tin oxide. A transparent conductive material selected from the group consisting of (ITO), indium zinc oxide (IZO), gallium-doped zinc oxide (GZO), metal nanowires, and carbon-based transparent electrodes. The method of manufacturing a touch screen panel according to claim 11, wherein each of the first electrodes has a plurality of crossover wires, each of the plurality of electrodes having a plurality of crossover wires.