TWI596518B - Touch screen sensor, image display device including the same, and fabricating method thereof - Google Patents

Description

Touch screen sensor, display device using the same, and manufacturing method thereof

The present invention relates to a touch screen sensor, an image display device including the touch screen sensor, and a method of fabricating the same, and more particularly, to being able to be positioned above and below the display device by optical interference. A touch screen sensor that touches a sensing unit pattern of a screen sensor to prevent a Moire phenomenon, an image display device including the touch screen sensor, and a method of manufacturing the same.

A touch screen sensor is a device that recognizes an input signal as a finger or a device such as a stylus, which is added to the display device or embedded in the display device (such as a liquid crystal display (LCD)). Input devices in a plasma display panel (PDP), an organic light emitting diode (OLED), and an active matrix organic light emitting diode (AMOLED). In recent years, touch input devices have been widely installed in mobile devices such as mobile phones, personal digital assistants (PDAs), portable multimedia players (PMPs), and have been used in various industries (such as navigation, mini-notebook computers). , notebook computers, digital information devices (DIDs), desktop computers that use touch input support systems, Internet Protocol TV (IPTV), high-tech fighters, tanks and armored vehicles.

The touch screen sensor has a light transmitting property to reduce visibility and is formed via a sensing unit using a conductive material. The sensing unit is formed by a repeating pattern to recognize the position of the input signal on the touch screen sensor, and has a problem that a moiré pattern is generated due to mutual interference of the patterns, because the sense is included The sensing layers of the measuring unit are stacked in parallel such that the patterns overlap.

The present invention is directed to a touch screen sensor capable of preventing image quality degradation caused by a moiré pattern, which is realized by forming an electrode of a sensing substrate. The pattern is prevented from being generated by giving a distortion between the patterns according to a predetermined angle in accordance with the stacking of the sensing substrates or overlapping with the stack of the image display panels.

The present invention is directed to providing a touch screen sensor and a method of fabricating the same, the touch screen sensor reducing visibility by forming a pattern of connecting units connecting the plurality of sensing units to be the same as the pattern of the sensing unit And by opening the edge of one of the sensing unit or the connecting unit without connecting the edge and the edge electrode to enable the user to see the electrodes, the electrodes are actually separated at fine intervals as if the electrodes were continuous.

The present invention has been made in an effort to provide a touch screen sensor and a method of fabricating the same, wherein the electrode layer is not exposed by forming a black layer which is approximately black outside the electrode layer on which the electrode is formed.

The present invention has been made in an effort to provide an image display device and a method of manufacturing the image display device capable of simply adjusting touch The orientation of the screen sensor and display device removes the moiré pattern and improves image quality without the need for a separate process.

An exemplary embodiment of the present invention provides a touch screen sensor for recognizing a user's touch coordinates by receiving an input signal of a sensing substrate, including: a first sensing substrate configured to be used according to a user The touch input generates a first input signal by using electrodes connected in a predetermined first pattern; and a second sensing substrate positioned on the upper surface of the first sensing substrate and assembled to be used according to The touch input generates a second input signal by using electrodes connected in a predetermined second pattern, the second pattern being non-parallel to the first pattern.

The angle between the first pattern and the second pattern may be equal to or smaller than 27°.

Another exemplary embodiment of the present invention provides an image display apparatus including: an image information display unit for displaying image information by using a plurality of pixels; and a touch screen sensor according to the present invention .

The image information display unit may include a black matrix pattern formed between the plurality of pixels, and the black matrix pattern, the first pattern, and the second pattern may not be parallel to each other.

A further embodiment of the present invention provides a method for manufacturing a touch screen sensor, comprising: forming a first sensing substrate, wherein the first sensing substrate is used by using a touch input according to a user's touch input a pattern-connected electrode to generate a first input signal; and a second sensing substrate to be positioned on the upper surface of the first sensing substrate, the second sensing substrate being used according to a user's touch input Using electrodes connected in a predetermined second pattern A second input signal is generated, the second pattern being non-parallel to the first pattern.

Yet another exemplary embodiment of the present invention provides a method of manufacturing an image display device, comprising: forming an image information display unit that displays image information by using a plurality of pixels; forming a first Sensing the substrate to be positioned on an upper surface of the image information display unit, the first sensing substrate generating the first input signal by using an electrode connected in a predetermined first pattern according to a touch input of the user; Forming a second sensing substrate to be positioned on an upper surface of the first sensing substrate, the second sensing substrate generating a second input by using an electrode connected in a predetermined second pattern according to a touch input of the user a signal, the second pattern being non-parallel to the first pattern.

According to the touch screen sensor according to the present invention, the lattice pattern formed by the overlapping of the patterns formed by the sensing unit is formed to have a predetermined angle, so that the generation of the moiré pattern is suppressed, thereby preventing the Inmore pattern The resulting image quality deteriorates. By simply adjusting the direction between the touch screen sensors, image quality degradation can be prevented without a separate process.

The pattern of the connection unit connecting the plurality of sensing units is formed to be the same as the pattern of the sensing unit, so that the user cannot see the sensing unit of the touch screen sensor.

The above summary is illustrative only and is not intended to be limiting in any way. Other aspects, embodiments, and features of the invention will become apparent from the accompanying drawings.

S100‧‧‧ Forming an image information display unit

S200‧‧‧ forming the first sensing substrate

S210‧‧‧ Determine the first angle

S220‧‧‧coated resin layer

S230‧‧‧Molded concave

S240‧‧‧ forming electrode layer

S250‧‧‧ forming a black layer

S300‧‧‧ forming a second sensing substrate

S310‧‧‧ Determine the second angle

S320‧‧‧coated resin layer

S330‧‧‧Molded concave

S340‧‧‧ forming an electrode layer

S350‧‧‧ forming a black layer

100‧‧‧Image information display unit

110‧‧‧Black matrix pattern

200‧‧‧First sensing substrate

200a‧‧‧ resin layer

200b‧‧‧Base

210‧‧‧ first pattern

210a‧‧‧Sensor unit

210b‧‧‧ Connection unit

210’‧‧‧Dummy unit

212‧‧‧electrode layer

214‧‧‧Black layer

300‧‧‧Second sensing substrate

300a‧‧‧ resin layer

300b‧‧‧ Connection unit

310’‧‧‧Dummy unit

312‧‧‧Electrical layer

314‧‧‧Black layer

400‧‧‧Sensor substrate

410‧‧‧ third pattern

Α‧‧‧first angle

Β‧‧‧second angle

Γ‧‧‧ third angle

FIG. 1 is an exemplary diagram illustrating an image display device including a touch screen sensor according to an exemplary embodiment of the present invention.

2A and 2B are diagrams illustrating an example of stacking of an image information display unit and a first sensing substrate of the image display device according to the present exemplary embodiment.

Fig. 3A is a view exemplifying an example of generation of a moiré phenomenon according to the related art which needs to be solved in the present invention.

FIG. 3B is an exemplary diagram illustrating the prevention of the moiré phenomenon in accordance with an exemplary embodiment of the present invention.

FIG. 4 is an exemplary diagram illustrating a stack of a first sensing substrate and a second sensing substrate of the image display device according to the present exemplary embodiment.

FIG. 5 is an exemplary diagram illustrating an electrode structure of a sensing substrate of an image display device according to an exemplary embodiment of the present invention.

6A and 6B are cross-sectional views of a cross section of a sensing substrate of an image display device, according to an exemplary embodiment of the present invention.

7A and 7B are exemplary diagrams illustrating a sensing unit and a connecting unit of a sensing substrate of the image display device according to the related art, which are required to be solved in the present invention.

8A and 8B are exemplary diagrams illustrating a sensing unit and a connection unit of a sensing substrate of an image display device according to an exemplary embodiment of the present invention.

9 and 10 are exemplary diagrams illustrating a layer structure of an image display device according to an exemplary embodiment of the present invention.

FIG. 11 is a diagram illustrating an inclusive touch according to an exemplary embodiment of the present invention. An exemplary diagram of an image display device that controls a screen sensor.

12A and 12B are diagrams illustrating an example of stacking of an image information display unit and a sensing substrate of an image display device according to the present exemplary embodiment.

FIG. 13 is a flow chart illustrating a method of fabricating an image display device including a touch screen sensor, in accordance with an exemplary embodiment of the present invention.

FIG. 14 is a detailed flowchart illustrating a step of forming a substrate in a method of manufacturing an image display device according to an exemplary embodiment of the present invention.

It is understood that the drawings are not necessarily to The specific design features (including, for example, specific dimensions, orientations, locations, and shapes) of the present invention as disclosed herein will be determined in part by the particular intended application and use.

In the figures, reference numbers refer to the same or equivalent parts of the invention.

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

Before describing a touch screen sensor according to the present invention, an image display apparatus including the touch screen sensor, and a method of manufacturing the image display apparatus, several terms used in the present specification will be described.

A touch screen sensor (a coordinate device for receiving an input signal of a sensing substrate and recognizing a user's touch) contacts a device that is recognized as an input signal when a finger or an object such as a stylus contacts the screen. The touch screen sensor can be a resistive type, a capacitive type, a projected capacitance type, and the like. In related fields In a capacitive touch screen sensor using an ITO transparent electrode, a sensing and operating sensor is formed by patterning the ITO. The capacitive touch screen sensor has the advantage that even if the shape, line width and spacing of the sensing and operating sensor are different due to the transparency of the ITO material, the pattern is not visible; Limited to the use of a substrate with high transparency and high durability, because the distance between the sensing sensor and the operating sensor increases due to the high specific resistance of the ITO material, and with the touch of the finger and sensing The distance between the devices increases, and the identification of the value of the capacitance change is degraded. In the case where the conductive layer is formed of a material other than ITO, the touch screen sensor in the related art has a problem that when the size of the operation pattern and the sensing pattern differs depending on the opacity of the conductive layer, To the pattern. The ITO material itself is expensive, so there is a problem that the manufacturing cost of the touch screen sensor including the ITO material increases.

Accordingly, the present invention proposes a capacitive touch screen sensor using a sensing substrate to form a conductive layer having a smaller electrical resistance than ITO, an image display device including the touch screen sensor, and a method of fabricating the same.

The "substrate" is used to manufacture a touch screen sensor, and it should be noted that the "substrate" may be referred to as a "film." The touch screen sensor can be made of a single substrate or by bonding two substrates including an upper substrate and a lower substrate. The substrate referred to as the first substrate in the present specification may be any of the upper substrate and the lower substrate, and the substrate referred to as the second substrate in the present specification may be any of the upper substrate and the lower substrate, and should be noted These substrates are referred to as a first substrate and a second substrate not to distinguish the upper side from the lower side.

Hereinafter, the touch according to the present invention will be described in more detail via the accompanying drawings A screen sensor, an image display device including the touch screen sensor, and a method of manufacturing the same.

FIG. 1 is an exemplary diagram illustrating an image display device including a touch screen sensor according to an exemplary embodiment of the present invention. Referring to FIG. 1, an image display device according to an exemplary embodiment of the present invention includes an image information display unit 100, a first sensing substrate 200, and a second sensing substrate 300.

The image information display unit 100 displays image information by using a plurality of pixels. In the present exemplary embodiment, the image information display unit 100 may be an image display device, such as a liquid crystal, used in mobile devices such as mobile phones, personal digital assistants (PDAs), and portable multimedia players (PMPs). Display (LCD), plasma display panel (PDP), organic light emitting diode (OLED), active matrix organic light emitting diode (AMOLED). The image information display unit 100 can be included in all industry sectors where image output devices can be used (such as navigation, mini-notebooks, notebook computers, digital information devices (DIDs), desktop computers using touch input support operating systems). A device for displaying images in Internet Protocol TV (IPTV), high-tech fighters, tanks, and armored vehicles.

The first sensing substrate 200 is positioned on an upper surface of the image information display unit 100, and generates a first input by using electrodes connected by a uniform first pattern 210 having a predetermined first angle according to a user's touch input. Signal. The position on the upper surface of the image information display unit 100 means that when the image information display unit 100 and the first sensing substrate 200 are stacked in the order indicated in FIG. 1, the first sensing substrate 200 is stacked on the image. Information display unit 100. Touch input in the exemplary embodiment includes use The input by pressing the image information displayed on the image information display unit 100 via the human body (including the user's finger) or the electronic pen to press the specific position of the image information. In the present exemplary embodiment, the first input signal generated by the first sensing substrate 200 sensing the touch signal may be information about the identified position on the first axis on the touch screen sensor.

A uniform first pattern 210 having a predetermined first angle will be described in more detail via FIGS. 2A and 2B. 2A is a diagram illustrating an image information display unit 100 of an image display device and an example of being stacked with a sensing substrate 200, according to the present exemplary embodiment. Referring to FIG. 2A, the image information display unit 100 includes a plurality of pixels, and a plurality of pixels are arranged in a uniform pattern 110 to display image information to a user. The pixels include specific elements that represent R, G, and B, respectively. In general, in the case of flat panel displays such as liquid crystal displays (LCDs) and plasma display panels (PDPs), light is blocked between specific elements of the pixels R, G, and B, and is in the pixel A black matrix is formed between them to hide wiring and the like. The uniform pattern 110 formed of pixels in the present exemplary embodiment means a black matrix pattern 110 formed between pixels.

In the present exemplary embodiment, the first sensing substrate 200 is formed of electrodes connected in a uniform first pattern 210. The first pattern 210 may be a pattern shaped like a lattice in which lines formed by uniform electrodes cross each other as illustrated in FIG. 2 . A lattice shape in which lines formed in a predetermined direction cross each other means a pattern generally having a mesh lattice shape or a mesh lattice shape.

The first angle of the first pattern 210 may be generated to prevent mutual interference between the uniform pattern 110 (ie, the pattern 110 of the black matrix formed by the plurality of pixels of the image information display unit 100) and the first pattern 210. Mo From the perspective of the phenomenon, the mutual interference is based on the stacking of the image information display unit 100 and the first sensing substrate 200. The Moire phenomenon is usually a natural interference phenomenon that occurs when two independent periodic patterns are stacked at a predetermined angle. The moiré pattern is seen in a curve, a corrugation, and a small beam having a wave shape seen when stacked with the display image of the screen, and this means that there is a change in the intensity of the light.

In the present exemplary embodiment, preventing the generation of the moiré phenomenon may mean giving an intersection angle according to a predetermined first angle between the black matrix pattern 110 and the first pattern 210, thereby preventing the basis by preventing mutual interference of the patterns. The stacking of the patterns produces a moiré pattern that resembles a curve, ripple, and beam having a wave shape as seen when stacked with the display image of the screen, or preventing the occurrence of a moiré phenomenon means preventing user identification The change in strength formed by stacking. The case where the user cannot recognize the change in the intensity means that the repetition interval of the third pattern formed by the black matrix pattern 110 and the first pattern 210 is equal to or smaller than the resolution interval, which defines the degree of interval that the human eye can distinguish.

The principle of generating and preventing the Moire phenomenon will be described via FIG. Since the first pattern 210 having the periodicity of the first sensing substrate 200 and the black matrix pattern 110 formed by the pixels of the image information display unit are stacked in parallel (as illustrated in FIG. 3A), thereby forming mutual interference, Therefore, the Moiré phenomenon can be generated, and the first pattern 210 of the first sensing substrate 200 and the black matrix pattern 110 of the image information display unit are stacked by the first sensing substrate 200 to make the first pattern 210 and the image information of the first sensing substrate 200 The black matrix pattern 110 of the display unit is not parallel (as illustrated in FIG. 3B), and the Moire phenomenon can be prevented.

In the present exemplary embodiment, the plurality of pixels of the image information display unit 100 may be obliquely arranged with respect to the virtual first axis (the axis indicated by x in the figure, for example, the horizontal axis of the rectangular image information display unit). Referring to FIGS. 2A and 2B, it can be seen that the black matrix pattern 110 is inclined with respect to the first axis according to a predetermined angle (including 0°) so as to be obliquely arranged with respect to the first axis. It should be noted here that the first axis is a reference line for describing the black matrix pattern 110 and the first and second sensing substrates 200 and 300 for reference to prevent the tilt angle of the Moire phenomenon. As illustrated in FIG. 2A, the first axis may correspond to or be parallel to any of the flat patterns of the black matrix pattern 110, and thus the reference of the tilt angle may be the black matrix pattern 110.

As described above, the pixels include specific elements that respectively represent R, G, and B according to the tilt direction. The first sensing substrate 200 is formed of an electrode connected in a uniform first pattern 210 having a predetermined first angle.

The first angle of the first pattern 210 may be an angle for preventing a moiré phenomenon according to mutual interference between the black matrix pattern 110 of the image information display unit 100 and the first pattern 210, and the mutual interference is displayed according to image information. The unit 100 is stacked with the first sensing substrate 200.

Accordingly, in the present exemplary embodiment, the first sensing substrate 200 may be formed of an electrode connected in a uniform lattice-shaped first pattern 210 having a predetermined first angle α with respect to the first axis.

The second sensing substrate 300 is positioned on the upper surface of the first sensing substrate 200, and generates a second input by using electrodes connected by the uniform second pattern 310 having a predetermined second angle according to the touch input of the user. Signal. The position on the upper surface of the first sensing substrate 200 means: when the first When the second sensing substrate 300 and the first sensing substrate 200 are stacked in the order indicated in FIG. 1 , the second sensing substrate 300 is stacked on the first sensing substrate 200 . As described above, when the first input signal generated by the first sensing substrate 200 according to the touch input is information about the identified position on the first axis (for example, the horizontal axis of the touch screen sensor), The second input signal generated by the second sensing substrate 200 may be information about the identified position on the second axis perpendicular to the first axis (eg, the vertical axis of the touch screen sensor).

A uniform second pattern 310 having a predetermined second angle will be described in more detail via FIG. 4A is a diagram illustrating an example in which the first sensing substrate 200 and the second sensing substrate 300 of the image display device are stacked according to the present exemplary embodiment. Referring to FIG. 4A, as described above, the first sensing substrate 200 is formed of electrodes connected in a uniform lattice-shaped first pattern 210 having a first angle α with respect to the first axis x of the black matrix pattern 110. . The second pattern 310 may be a pattern shaped like a lattice in which lines formed by uniform electrodes cross each other as illustrated in FIG. A lattice shape formed in a predetermined direction as intersecting each other as described above means a pattern generally having a mesh lattice shape or a mesh lattice shape.

The second angle of the second pattern 310 may be such that the second pattern 310 is disposed not parallel to the first pattern 210 in order to prevent an angle of the Moire phenomenon from being generated according to mutual interference between the first pattern 210 and the second pattern 310. Referring to FIG. 4, in the present exemplary embodiment, the second sensing substrate 300 may be formed of electrodes connected in a uniform lattice-shaped second pattern 310 having a predetermined second angle β with respect to the black matrix pattern 110.

In the present exemplary embodiment, the first angle α may be in a black matrix diagram The case 110 and the first pattern 210 are determined to prevent an angle of generating a moiré phenomenon according to the stacking of the image information display unit 100 and the first sensing substrate 200, and the second angle β may be in the black matrix pattern 110 and The second patterns 310 are determined to prevent an angle at which a moiré phenomenon is generated according to the stacking of the first sensing substrate 200 and the second sensing substrate 300.

FIG. 4B illustrates an image display device and an image information display unit 100 according to the present exemplary embodiment. The first sensing substrate 200 is stacked on the upper surface of the image information display unit 100, and the second sensing substrate 300 is stacked on the upper surface of the first sensing substrate 200, and thus the black matrix pattern 110, the first pattern 210, and The second patterns 310 are arranged not to be parallel to each other, and thus do not cause a moire phenomenon caused by interference between the patterns. This will be expressed by Equation 1 below.

[Equation 1] 0 < α < 90 °, 0 < β < 90 °, 0 < | α - β | < 90 °

In the present exemplary embodiment, the first angle α and the second angle β determined according to the size of the image information display unit are determined as indicated in Table 1 (the unit of the angle is degree (°), and the image information The case where the values of α and β are the same is shown as a repeated experiment).

In the present exemplary embodiment, the first angle and the second angle may be based on an angle formed with respect to the black matrix pattern 110, the first sensing substrate 200, and The line width or the pitch of the electrodes of the second sensing substrate 300 is determined, and the black matrix pattern is formed by the pixels of the image information display unit 100, which is the interval between the lines. The line width or spacing of the electrodes is illustrated in Figure 5, and when the line width is reduced and the spacing is increased, less moiré is produced.

Experiments have found that when the difference between the first angle and the second angle is equal to or less than 27°, the Moire phenomenon that needs to be solved in the present exemplary embodiment can be prevented, and the first angle or the second angle can be at a predetermined error angle. Formed within the scope. In the present exemplary embodiment, the error angle means a difference between an angle actually formed by the pattern of the first sensing substrate 200 and the second sensing substrate 300 and an angle expected according to the manufacturing process, and does not deviate from the present The object of the invention can be formed in a range. More specifically, when the error angle is ±5°, it is possible to prevent the Moire phenomenon, and thus the error angle can be formed within a range of ±5°.

6A and 6B illustrate cross sections of a first sensing substrate 200 or a second sensing substrate 300, in accordance with an exemplary embodiment of the present invention. The first sensing substrate 200 or the second sensing substrate 300 according to an exemplary embodiment of the present invention includes: a resin layer 200a or 300a stacked on the substrate 200b or 300b and including a concave pattern patterned on a surface; And an electrode layer 212 or 312 which is formed by filling the indentations with a conductive material, and electrodes connected in the first pattern 210 or the second pattern 310 may be formed on the electrode layer 212 or 312.

In the present exemplary embodiment, the substrate 200b or 300b may be formed as a transparent substrate. That is, the transparent substrate can be obtained by using polyethylene terephthalate (PET), polyimine (PI), acryl, polycarbonate (PC), At least one of triacetyl cellulose (TAC), polymethyl methacrylate (PMMA), polyether oxime (PES), polyethylene naphthalate (PEN), and glass is formed as a transparent film. As a substrate having predetermined transparency.

The resin layer 200a or 300a is stacked on the substrate 200b or 300b and has a concave pattern patterned on a surface. Specifically, the resin layer is stacked on a transparent substrate, and a concave shape is formed by imprinting on the resin layer using an embossing mold corresponding to the desired concave shape. That is, a concave streak is formed on the resin layer by using an embossing mold. Thus, one or more indentations form a pattern. Further, the resin layer may be formed of an ultraviolet resin or a thermosetting resin.

The electrode layer 212 or 312 is formed by filling a concave pattern with a conductive material, and the sensing unit, the dummy unit, and the connection unit are formed in the electrode layer. Here, examples of the conductive material may include copper (Cu), silver (Ag), aluminum (Al), nickel (Ni), chromium (Cr), and nickel-phosphorus (Ni-P). In the present exemplary embodiment, the electrode layer includes: a plurality of sensing units formed by electrodes connected in the first pattern 210 or the second pattern 310; and a connection unit that is the same as the pattern of the sensing unit Or a similar pattern is formed to connect the sensing units.

7A and 7B are diagrams illustrating examples of the sensing units 210a and 310a and the connecting units 210b and 310b of the touch screen sensor according to the related art to be solved in the present invention. Referring to FIG. 7A or FIG. 7B, in the touch screen sensor according to the related art, the sensing units 210a and 310a are formed on one surface of the substrate by electrodes connected in a uniform pattern, and the connection units 210b and 310b are The electrodes are connected in a pattern different from the pattern of the sensing units 210a and 310a, thus causing the following problem: sensing The visibility of the unit and the connecting unit is increased by the difference in pattern due to the disappearance of the continuity of the electrodes. The edges of the sensing units 210a and 310a or the connecting units 210b and 310b according to the related art are connected by edge electrodes, and thus the electrodes are disconnected due to loss of continuity, thereby causing a problem of increased visibility.

Therefore, in order to solve the problem of increased visibility of the sensing unit in the related art, the present invention proposes a touch screen sensor in which the sensing unit 210a or 310a is connected to the connecting unit 210b of another sensing unit 210a or 310a or The patterns of 310b are identical or similar to each other.

FIG. 8A is a diagram illustrating an example of a sensing unit and a connection unit of a touch screen sensor according to the present exemplary embodiment. Referring to FIG. 8A, in the touch screen sensor according to the present exemplary embodiment, the electrodes connected in a uniform first pattern 210 or the second pattern 310 on one surface of the substrate include a plurality of sensing units 210a or 310a and Connecting units 210b or 310b of the sensing units are connected.

In addition, referring to FIG. 8B, the touch screen sensor in the exemplary embodiment includes a plurality of dummy units 210' and 310' formed in the vicinity of the sensing units 210a and 310a to lower the sensing unit 210a and The visibility of 310a.

Here, the sensing units 210a and 310a (which are electrodes included for sensing the touch signal of the user) are formed of a conductive material in the present invention, and the conductive material may be opaque.

The dummy cells 210' and 310' (which are electrodes formed when approaching or adjacent to the sensing units 210a and 310a) mean forming in a pattern having a dummy shape The dummy shape is a shape similar to the shape of the sensing units 210a and 310a (as indicated by the name), and is formed in such a manner that the dummy units 210' and 310' are formed in an inactive state without sensing the user's touch. Control signal or a combination thereof. Therefore, the sensing unit and the dummy unit are formed to be electrically insulated from each other. Because when the sensing unit formed of the non-transparent electrode material is formed on the front surface of the touch screen sensor, the phenomenon that the sensing unit is seen by the external light that is irradiated to the touch screen sensor is generated, so Dummy cells 210' and 310' are formed on the substrate.

In the case of FIG. 8B, the sensing units 210a and 310a and the dummy units 210' and 310' are formed in a straight shape, but the shapes of the sensing unit and the dummy unit are not limited thereto, and may be formed in various pattern shapes. . For example, the overall shape of the sensing unit may be in the shape of, for example, a diamond, a trapezoid, and a diamond.

At the same time, the electrode is an electrode included for transmitting the touch signal sensed by the sensing unit to an external driving circuit (not illustrated), and can be simultaneously formed when the sensing unit and the dummy unit are formed on the substrate. In the present invention, the subject matter of the electrode is beyond the scope of the present invention, and thus a more detailed description of the electrode will be omitted.

Referring to FIGS. 6A and 6B, the first sensing substrate 200 or the second sensing substrate 300 according to the present exemplary embodiment further includes a black layer 214 or 314 for reducing the sensing unit 210a formed on the electrode layer 212 or 312. Or the visibility of the 310a, the dummy unit 210' or 310' and the connection unit 210b or 310b, and the black layer 214 or 314 may be stacked on the concave electrode layer 212 or 312 or stacked on the resin layer 200a or 300a and the electrode layer 212 or 312 between. Referring to FIG. 6A, a black layer 214 or 314 having a shape surrounding a concave electrode layer 212 or 312 formed in the resin layer 200a or 300a may be formed to reduce the visibility of the electrode layer. Referring to FIG. 6B, the black layer 214 or 314 may be stacked to cover the shape of the electrode layer 212 or 312 within the indentation instead of the shape of the surrounding electrode layer. Therefore, the touch screen sensor according to the present exemplary embodiment prevents the electrode layer from being seen from the outside by using a black layer. In the present exemplary embodiment, the black layer may be formed of a metal material including carbon black and having conductivity and black.

9 and FIG. 10 are exemplary diagrams illustrating a layer structure in a touch screen sensor, an image display device including the touch screen sensor, and a method of fabricating the same according to an exemplary embodiment of the present invention, In the layer structure, the first sensing substrate 200 and the second sensing substrate 300 are stacked on a substrate.

Referring to FIG. 9, in the present exemplary embodiment, the first sensing substrate 200 may be stacked on one surface of a substrate (glass or film), and the second sensing substrate 300 may be stacked on the other surface of the substrate. Therefore, the image information display unit 100, the resin layer (including the electrode layer) of the first sensing substrate 200, the resin layer (including the electrode layer) of the second sensing substrate 300, and the window (the tempered glass) are stacked from the bottom layer. ).

Referring to FIG. 10, in the present exemplary embodiment, the electrode layers of the first sensing substrate 200 may be stacked on one surface of the substrate, and the electrode layers of the second sensing substrate 300 may be stacked on one surface of the other substrate. . Therefore, the image information display unit 100, the first sensing substrate 200 (the resin layer including the substrate and the electrode layer), the second sensing substrate 300 (including the resin layer of the other substrate and the electrode layer), and the second sensing substrate 200 are stacked from the bottom layer. Window (tempered glass).

The material of the substrate illustrated in Figures 9 and 10 may be a transparent material comprising a resin film or glass as described above.

In the present exemplary embodiment, the cross section of the resin layer formed with the indentation may have a quadrangular shape as illustrated in FIGS. 6A and 6B, or may have a different concave shape. In the resin layer, the width of the concave groove may be 1 μm to 10 μm, the depth of the concave groove may be 1 μm to 10 μm, and the pitch between the concave grooves may be 200 μm to 600 μm. Of course, this is merely an exemplary embodiment, and various modifications can be made to the width, depth, and pitch of the indentations.

In the present exemplary embodiment, the fill factor defining the ratio of the area occupied by the electrodes in the substrate may have a value between 1.4% and 7.0%. Therefore, the width and pitch of the electrodes have values within the ranges indicated in Table 2 in order to satisfy the fill factor which is the interval between the electrodes for forming the lattice pattern.

Referring to Equation 2 below, the fill factor is defined as obtained by dividing the area of the predetermined substrate by the area occupied by the electrodes in the electrodes connected in a lattice pattern (the shape of the dummy pattern or the sensing pattern) formed in a substrate. The ratio, and the fill factor is expressed as Equation 2 below.

When the fill factor as defined above is less than 1.4%, the light transmittance increases, but the resistance of the electrode also increases and the contact area of the capacitor decreases, so the touch operation may not proceed smoothly. When the fill factor is more than 10%, the occupied area of the electrode in the substrate becomes large, and thus there are disadvantages in that the light transmittance is reduced and the electrode pattern is seen.

Thus, the fill factor can have a value between 1.4% and 10.0%, and more preferably can have a value between 1.4% and 7.0%. The line width and pitch can be appropriately adjusted according to the value of the fill factor used.

Referring to FIG. 11 , a touch screen sensor according to another exemplary embodiment of the present invention, an image display device including the touch screen sensor, and a method of manufacturing the same include an image information display unit and a sensing substrate 400 . As described above, the image information display unit 100 displays image information by using a plurality of pixels.

The sensing substrate 400 is positioned on an upper surface of the image information display unit 100, and generates a signal by using electrodes connected in a uniform pattern having a predetermined third angle according to a user's touch input. In contrast to the image display device according to the above-described exemplary embodiments, the sensing substrate 400 that senses the touch input can be implemented as a single layer. The sensing substrate 400 is input according to a user's touch To generate input signals. The sensing substrate 400 can generate the first axis in the present exemplary embodiment instead of generating the position information of the first axis and the second axis as the input signals by the first sensing substrate 200 and the second sensing substrate 300, respectively. And position information (x, y) of both the second axis. Therefore, the sensing unit for generating positional information in the direction of the first axis and the sensing unit for generating positional information in the direction of the second axis can be alternately arranged and electrically insulated from each other.

In the present exemplary embodiment, the predetermined third angle is prevented from being formed according to the uniform black matrix pattern 110 (formed by the plurality of pixels of the image information display unit 100) and the third pattern 410 (ie, the electrode pattern of the sensing substrate 400). The mutual interference between them produces an angle of the Moire phenomenon, which is based on the stacking of the image information display unit 100 and the sensing substrate 400. Referring to FIG. 12A or FIG. 12B, the third angle is defined as an angle γ formed between the black matrix pattern 110 of the image information display unit 100 and the third pattern 410 of the sensing substrate 400.

In an exemplary embodiment, as described above, the third angle γ may be based on the angle of the black matrix pattern 110 formed by the plurality of pixels of the image information display unit 100 and the line width or pitch of the electrodes of the sensing substrate 400. to make sure.

The sensing substrate 400 of the image display device according to the present exemplary embodiment has characteristics corresponding to the above-described first sensing substrate 200 or second sensing substrate 300, and thus the description of the characteristics is repeated, and thus will be omitted The description.

Hereinafter, a process of manufacturing an image display device according to at least one exemplary embodiment of the present invention will be described. Figure 13 is a diagram illustrating the present invention The fabrication of an exemplary embodiment includes a flow diagram of a method of touching an image display device of a screen sensor.

In the present exemplary embodiment, a method of manufacturing an image display device includes forming an image information display unit (S100), forming a first sensing substrate (S200), and forming a second sensing substrate (S300).

Forming an image information display unit (S100) for displaying image information by using a plurality of pixels (that is, a step of forming an image information display device) is a step of arranging a plurality of pixels in a uniform pattern as described above The pixels include specific elements representing R, G, and B, respectively, and image display devices such as a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED), and an active matrix organic light emitting diode. Polar body (AMOLED). Therefore, in forming the image information display unit (S100), a black matrix pattern 110 is formed between the pixels.

Forming the first sensing substrate (S200) is a step of forming a substrate on the upper surface of the image information display unit 100 and using the touch input according to the user to have a uniform first angle An electrode connected to the pattern 210 to generate a first input signal, and forming the first sensing substrate (S200) includes determining a first angle (S210) to prevent the black matrix pattern 110 and the first pattern 210 according to the image information display unit 100 The mutual interference causes a Moire phenomenon, which is based on the stacking of the image information display unit 100 and the first sensing substrate 200.

In the present exemplary embodiment, as described above, when the angle α is given between the directions of the patterns as illustrated in FIG. 2A or 2B, the first angle means the angle α.

In forming the first sensing substrate (S200), the electrode is formed by forming a concave pattern in the resin layer by using the first angle determined in determining the first angle, and filling the conductive material with the conductive material Concave. The formation of the first sensing substrate (S200) will be described in detail with reference to FIG. In the present exemplary embodiment, forming the first sensing substrate (S200) includes coating a resin layer (S220), molding a concave pattern (S230), forming an electrode layer (S240), and forming a black layer (S250).

In the coating resin layer (S220), a resin layer may be stacked on a substrate, and a resin film or glass may be used as a substrate. The substrate can be formed from a transparent material. That is, a substrate having a predetermined transparency can be formed in the form of a transparent film by using at least one of the above materials. The substrate thickness in the range of 25 μm to 250 μm is suitable for improving the brightness, and the substrate transmittance equal to or higher than 80% and more preferably equal to or higher than 90% is appropriate.

In the molding concave (S230), the resin layer is embossed with a mold to form a patterned concave. In the present exemplary embodiment, the sensing unit, the dummy unit, and the connecting unit are formed via the formation of the electrode layer (S240), wherein the concave streaks formed in the molded indentation are filled with a conductive material, thus molding the concave (S230), an electrode of the touch screen sensor is formed in the concave structure. However, the concave formed in the present exemplary embodiment may be a concave formed in the uniform first pattern 210 according to the first angle determined in determining the first angle (S210).

In forming the electrode layer (S240), a conductive material is filled in the concave formed in the molded concave, and a sensing unit, a dummy unit, and a connecting unit are formed in the electrode layer filled with the conductive material in forming the electrode layer . Here, Examples of the conductive material may include copper (Cu), silver (Ag), aluminum (Al), nickel (Ni), chromium (Cr), and nickel-phosphorus (Ni-P).

Therefore, in the present exemplary embodiment, the sensing unit and the dummy unit can be simultaneously formed and formed of the same conductive material. However, as described above, the sensing unit is an electroactive electrode that senses and transmits the touch signal, and the dummy unit is a non-electroactive electrode.

In forming the black layer (S250), a conductive and black material is stacked on the concave electrode layer formed in the formed electrode layer. In the present exemplary embodiment, in forming a black layer, as described in FIG. 6B, black layers are stacked to reduce the visibility of the electrode layers. When the black layer 214 or 314 is formed in the form of the surrounding electrode layer 212 or 312 as illustrated in FIG. 6A, a black layer is formed between forming the molding recess (S230) and forming the electrode layer (S240) (S250).

Forming the second sensing substrate (S300) includes coating a resin layer (S320), molding a concave pattern (S330), forming an electrode layer (S340), and forming a black layer (S350), the steps forming a first sensing with the above The steps of the substrate (S200) are the same. Forming the second sensing substrate (S300) also includes determining a second angle (S310) to prevent a Moire phenomenon from being generated according to mutual interference between the first pattern 210 and the second pattern 310, the mutual interference being according to the first sensing A stack of the substrate 200 and the second sensing substrate 300. In this case, in determining the second angle (S310), the second angle can be determined, and thus the Moire phenomenon according to mutual interference between the black matrix pattern 110 and the second pattern 310 is not generated. In the present exemplary embodiment, when an angle is given between the directions of the patterns as illustrated in FIG. 4, the second angle means the angle β. However, in the formation of the second The concave formed in the molded concave (S330) of the sensing substrate (S300) may be a concave formed in the uniform second pattern 310 according to the second angle determined in determining the second angle (S310).

In the present exemplary embodiment, the first angle α determined in determining the first angle (S210) may be determined to prevent a moiré phenomenon from being generated according to the stacking of the image information display unit and the first sensing substrate. The angle, and the second angle β determined in determining the second angle (S310) may be a predetermined angle at which the moire phenomenon is not generated according to the stacking of the first sensing substrate 200 and the second sensing substrate 300, for example, as follows A predetermined angle at which the deviation of the amount of light is maintained at a predetermined value or less when the amount of light emitted from the first sensing substrate 200 and the second sensing substrate 300 is measured in an equivalent manner. In the present exemplary embodiment, the first angle α and the second angle β determined according to the size of the image information display unit are determined as indicated in Table 1 above.

The first angle or the second angle determined in determining the first angle or the second angle (S210 or S310) may be according to an angle of the black matrix pattern 110 of the image information display unit 100 and the first sensing substrate 200 and the second sense The line width or spacing of the electrodes of the substrate 300 is measured to determine the spacing between the lines. The line width or pitch of the electrodes is illustrated in FIG. 5, and when the line width is reduced and the pitch is increased, less moiré occurs, so the first angle or the second angle can be determined according to the line width or the pitch.

In the electrode formed in the present exemplary embodiment, the fill factor defining the ratio of the area occupied by the electrode in the substrate area may have a value between 1.4% and 7.0%. The description of the fill factor overlaps with the description of the above-described electrodes of the image display device, and thus the description will be omitted.

The touch screen sensor according to another exemplary embodiment of the present invention includes a first sensing substrate 200 and a second sensing substrate 300.

Referring to FIG. 1, the first sensing substrate 200 is positioned on the upper surface of the image information display unit 100, and is connected by using the electrodes connected by the uniform first pattern 210 having a predetermined first angle according to the user's touch input. Generating a first input signal, and the second sensing substrate 300 is positioned on an upper surface of the first sensing substrate 200, and is connected by using a uniform second pattern 310 having a predetermined second angle according to a user's touch input. The electrodes generate a second input signal.

The first sensing substrate 200 and the second sensing substrate 300 and the first sensing substrate for manufacturing the image display device including the touch screen sensor are the same as the second sensing substrate, and thus the substrates are The detailed description of the overlap occurs and thus the detailed description will be omitted.

Referring to FIG. 11 , a touch screen sensor according to another exemplary embodiment of the present invention includes a sensing substrate 400 positioned in an image information display unit for displaying image information by using a plurality of pixels. The signal is generated on the upper surface of 100 and according to the user's touch input by using electrodes connected in a uniform pattern having a predetermined angle. In describing the sensing substrate 400 of the image display device according to the above-described exemplary embodiment, the sensing substrate of the touch screen sensor according to the present exemplary embodiment has been described, and thus the description of the sensing substrate overlaps And the description will be omitted.

A method of fabricating a touch screen sensor according to another exemplary embodiment of the present invention includes forming a first sensing substrate and forming a second sensing substrate. The method for manufacturing a touch screen sensor according to the present exemplary embodiment represents a system in progress The steps of forming the first sensing substrate and the second sensing substrate in the method of forming an image display device including a touch screen sensor will be described with reference to FIG.

In forming the first sensing substrate (S200), forming a first sensing according to a user's touch input to generate a first input signal by using an electrode connected by a uniform first pattern 210 having a predetermined first angle The substrate 200, and in forming the second sensing substrate (S300), forming a second input signal according to a user's touch input by using an electrode connected by a uniform second pattern 310 having a predetermined second angle The second sensing substrate 300 is thus positioned on the upper surface of the first sensing substrate 200, which is formed in forming the first sensing substrate (S200).

Forming a first sensing substrate and a second sensing substrate (S200 and S300) and forming the first sensing substrate and the second sensing substrate by using the above method for manufacturing an image display device including the touch screen sensor (S200) It is the same as S300), and thus a detailed description of the formation will be omitted.

Exemplary embodiments have been described and illustrated in the drawings and the specification as described above. The exemplary embodiments were chosen and described in order to explain certain embodiments of the embodiments As can be seen from the above description, certain aspects of the invention are not limited by the specific details of the examples illustrated herein, and thus, other modifications and applications or equivalents thereof will be apparent to those skilled in the art. However, after studying the present specification and the drawings, those skilled in the art will clearly understand the structure. Numerous changes, modifications, variations, and other uses and applications. All such changes, modifications, variations and other uses and applications without departing from the spirit and scope of the invention are considered to be covered by the present invention.

100‧‧‧Image information display unit

110‧‧‧Black matrix pattern

200‧‧‧First sensing substrate

210‧‧‧ first pattern

Α‧‧‧first angle

Claims (21)

A touch screen sensor for recognizing a user's touch coordinates by receiving an input signal of a sensing substrate, comprising: a first sensing substrate assembled according to the user's touch The control input generates a first input signal by using a plurality of electrodes connected by a predetermined first pattern; and a second sensing substrate positioned on an upper surface of the first sensing substrate and grouped Configuring a second input signal according to the touch input of the user by using a plurality of electrodes connected by a predetermined second pattern, the second pattern being non-parallel to the first pattern; wherein the first pattern is And the plurality of electrodes connected to the second pattern include: a plurality of sensing units formed in a predetermined pattern, and a plurality of dummy units formed adjacent to the plurality of sensing units; wherein the plurality of sensing units At least a portion of an edge electrode in the cell is not present on a boundary between the plurality of sensing units and the plurality of dummy cells. The touch screen sensor of claim 1, wherein an angle between the first pattern and the second pattern is equal to or smaller than 27 degrees. The touch screen sensor as claimed in claim 2, wherein the first pattern and the second pattern are respectively formed within an error angle range of ±5°. The touch screen sensor of claim 2, wherein the first sensing substrate and the second sensing substrate are stacked on a substrate, and includes: a plurality of resin layers having a pattern on a surface Multiple a concave pattern; and a plurality of electrode layers formed by filling the plurality of concave lines with a conductive material. The touch screen sensor of claim 4, wherein the plurality of electrodes connected by the first pattern and the second pattern further comprise: a plurality of connecting units connected to the plurality of sensing units Patterns of the same pattern are formed for connecting the plurality of sensing units. The touch screen sensor of claim 5, wherein the plurality of dummy cells are formed in the same pattern as the patterns of the plurality of sensing units. The touch screen sensor of claim 6, wherein the plurality of sensing units and the plurality of dummy units are formed to be insulated from each other. The touch screen sensor of claim 6, wherein the first sensing substrate and the second sensing substrate further comprise a plurality of black layers for reducing the plurality of the plurality of electrode layers formed on the plurality of electrode layers Sensing unit, the plurality of dummy cells, and visibility of the plurality of connection units; and the plurality of black layers are stacked on the plurality of electrode layers or stacked between the plurality of electrode layers and the plurality of resin layers. The touch screen sensor of claim 4, wherein the first sensing substrate is stacked on one surface of the substrate, and the second sensing substrate is stacked on the other surface of the substrate. The touch screen sensor of claim 4, wherein the first sensing substrate is stacked on one surface of the substrate, and the second sensing substrate is stacked on one surface of the other substrate. The touch screen sensor of claim 4, wherein the material of the substrate is a transparent material including a resin film or glass. A touch screen sensor as recited in claim 1, wherein a fill factor is defined as Equation 2 below. The fill factor is a ratio of an area occupied by the plurality of electrodes of the first sensing substrate or the second sensing substrate, and the fill factor has a value between 1.4% and 7.0%. An image display device comprising: an image information display unit configured to display image information by using a plurality of pixels; and the touch screen as claimed in any one of claims 1 to 12. A sensor positioned on an upper surface of one of the image information display units. The image display device of claim 13, wherein the image information display unit comprises a black matrix pattern formed between the plurality of pixels; the black matrix pattern, a first pattern, and a second pattern Arranged to be non-parallel to each other. The image display device of claim 14, wherein the first angle and the second angle are determined according to line widths or spacings of the plurality of electrodes of the first sensing substrate and the second sensing substrate, respectively. The first angle is an angle between the black matrix pattern and the first pattern, and the second angle is an angle between the black matrix pattern and the second pattern. A method of manufacturing a touch screen sensor, comprising: Forming a first sensing substrate, the first sensing substrate generates a first input signal by using a plurality of electrodes connected by a predetermined first pattern according to a touch input of a user; and forming a second sense The substrate is measured to be positioned on an upper surface of the first sensing substrate, and the second sensing substrate is generated by using a plurality of electrodes connected by a predetermined second pattern according to the touch input of the user. a second input signal, the second pattern is not parallel to the first pattern; wherein the plurality of electrodes connected by the first pattern and the second pattern comprise: a plurality of sensing units formed in a predetermined pattern, And a plurality of dummy cells formed adjacent to the plurality of sensing units; wherein at least a portion of one of the plurality of sensing cells is not present between the plurality of sensing units and the plurality of dummy cells On the border. A method of manufacturing an image display device, comprising: forming an image information display unit, wherein the image information display unit displays image information by using a plurality of pixels; forming a first sensing substrate to position it On the upper surface of one of the image information display units, the first sensing substrate generates a first input signal by using a plurality of electrodes connected by a predetermined first pattern according to a touch input of a user; and forming a first input signal; a second sensing substrate is positioned on an upper surface of the first sensing substrate, and the second sensing substrate is connected by using a predetermined second pattern according to the touch input of the user. electrode Generating a second input signal, the second pattern is not parallel to the first pattern; wherein the plurality of electrodes connected by the first pattern and the second pattern comprise: a plurality of sensing units, which are predetermined a pattern forming, and a plurality of dummy cells formed adjacent to the plurality of sensing units; wherein at least a portion of one of the plurality of sensing units is absent from the plurality of sensing units and the plurality of dummy cells On the border between. The method of manufacturing an image display device according to claim 17, wherein in the forming the image information display unit, a black matrix pattern is formed between the plurality of pixels; and the first sensing substrate is formed The method includes determining a first angle to prevent a Moire phenomenon from being generated according to mutual interference, the first angle being an angle between the black matrix pattern and the first pattern. The method of manufacturing an image display device according to claim 18, wherein the forming the second sensing substrate comprises determining a second angle to prevent a Moire phenomenon from being generated according to mutual interference, the second angle being the black matrix An angle between the pattern and the second pattern. The method for manufacturing an image display device according to claim 19, wherein the determining the first angle and determining the second angle are respectively according to the first sensing substrate and the second sensing substrate The line width or spacing of the electrodes determines the first angle and the second angle. The method of manufacturing an image display device according to any one of claims 17 to 19, wherein the forming the first sensing substrate and the forming the second sensing substrate comprises: coating a resin on a surface of the substrate a plurality of indentations to form a plurality of sensing units formed on the surface of the substrate in a predetermined pattern; and a plurality of connecting units coupled to the plurality of sensing Forming the same pattern of the cells and connecting the plurality of sensing units; forming an electrode layer by filling the plurality of indentations with a conductive material; and forming a black layer that reduces visibility of the electrode layer.