KR20150067564A - Display Panel For Display Device - Google Patents

Abstract

The present invention relates to a display panel for a display device, which comprises: a GIP shorting bar of a first unit display panel placed on separation space between two unit display panels; and a touch electrode shorting bar of a second unit display panel, wherein the touch electrode shorting bar and the GIP shorting bar are formed on different layers, thus increasing layout efficiency of the display panels on a large substrate, minimizing the space between the two display panels to reduce a defect rate, and making the process simple because a cutting process can be done with a single scribing line.

Description

[0001] The present invention relates to a display panel for a display device,

The present invention relates to a display panel for a display device, and more particularly to a touch-integrated display panel in which a touch electrode is positioned inside a panel.

2. Description of the Related Art [0002] As an information-oriented society develops, there have been various demands for display devices for displaying images. Recently, liquid crystal displays (LCDs), plasma display panels (PDPs) Various display devices such as an OLED (Organic Light Emitting Diode Display Device) have been utilized.

Among these display devices, a liquid crystal display (LCD) includes an array substrate including a thin film transistor, an upper substrate provided with a color filter and / or a black matrix, and a liquid crystal material layer formed therebetween, The alignment of the liquid crystal layer is adjusted according to an electric field applied between both electrodes of the region, and the transmittance of light is controlled thereby to display an image.

The display panel of such a liquid crystal display device is defined by a non-display area (NA), which is a peripheral area of the display area AA, and a display area (AA) A first substrate, which is an array substrate in which a thin film transistor or the like is formed and in which a pixel region is defined, and a second substrate, which is an upper substrate on which a black matrix and / or a color filter layer are formed.

The array substrate or the first substrate on which the thin film transistors are formed further includes a plurality of gate lines GL extending in a first direction and a plurality of data lines DL extending in a second direction perpendicular to the first direction , And one pixel region (Pixel P) is defined by the respective gate lines and data lines. In one pixel region P, at least one thin film transistor is formed, and the gate or source electrode of each thin film transistor may be connected to a gate line and a data line, respectively.

A gate driver (drive circuit) or a data driver circuit outside the non-display region or the panel is included in each gate line and the data line in order to provide a gate signal and a data signal necessary for driving each pixel.

Among them, the gate drive circuit is formed simultaneously on the non-display region of the display panel in the process of forming the various signal lines and pixels of the display panel, and consequently, the gate drive circuit is connected to the gate- -In-Panel (hereinafter also referred to as " GIP ").

In addition, a recent display panel generally has a touch function for sensing the input of a user's finger or the like, and a type in which a touch screen is separately manufactured and installed on a display panel, a type in which a touch electrode necessary for touch recognition, A touch-integrated type display panel which is incorporated into a display panel during manufacturing is being developed.

The touch-integrated display panel may be referred to as a so-called " In-Cell Touch ". The touch-integrated display panel usually has a common electrode (Vcom) And can be used as a touch electrode.

On the other hand, a large number of such display panels may be formed on one glass mother substrate at a time, and then cut or scribed by display panels as respective individual products.

In the case of such a display panel, since static electricity may be generated due to contact with various manufacturing equipment in many manufacturing processes, and various signal lines or electrodes are formed of a conductive material, static electricity generated is charged, .

Therefore, an antistatic structure such as a so-called shorting bar that electrically connects the conductive elements to discharge or solve the static electricity generated in the manufacturing process of the display panel may be used. However, when a large number of such antistatic structures are used It is necessary to solve the problem that overlapping may occur in the formation position and structure.

In view of the foregoing, it is an object of the present invention to provide a touch-type display panel including an antistatic structure.

Another object of the present invention is to optimize the formation positions and materials of at least one shot bar in a display panel including at least one shot bar for the purpose of preventing static electricity and the like, thereby maintaining the glass efficiency at the time of manufacturing the display panel and minimizing the defect rate And a display panel.

It is another object of the present invention to provide a display device in which a shorting bar of various signal application wirings (GIP wirings) for driving a gate of a display panel and a shorting bar of a touch electrode inside the touch-integrated display panel are formed in different layers from each other, And a display panel which can simplify the manufacturing process.

In order to achieve the above object, an embodiment of the present invention is a display panel for a display device including two or more unit display panels, each of the display panels including a plurality of touch electrodes and a plurality of GIP lines A first unit display panel, a second unit display panel, a GIP shorting bar of the first unit display panel and a touch electrode shorting bar of the second unit display panel arranged in a spaced-apart space between both unit display panels, The touch electrode shorting bar of the panel and the GIP shorting bar of the second unit display panel provide a display panel formed of different layers.

According to another embodiment of the present invention, there is provided a display panel divided into units by a scribing process, comprising: a plurality of touch electrodes arranged in a display region in which a plurality of pixels are defined; And a GIP connection line for connecting the touch electrode and the GIP line directly to the touch electrode shorting bar and the GIP shortening line before the scribing process, And a remaining GIP shorting bar of another unit display panel formed on a different layer from the touch electrode connecting wiring, and a display including a remaining GIP shorting bar on the GIP connecting wiring and another unit display panel formed on a different layer from the GIP shorting bar Panel.

As described above, according to the present invention, it is possible to prevent the display panel from being damaged by the static electricity generated during the manufacturing or patterning process of the touch-integrated display panel.

Further, according to the present invention, there is an effect that the defective rate can be minimized while maintaining the glass efficiency in the manufacturing process of the touch-integrated display panel by optimizing the formation position, material, and the like of at least one shot bar in the touch display panel .

According to the present invention, in the touch-type display panel, the forming positions and layers of the shorting bar and the touching electrode for the signal wiring on the panel are different from each other, so that the arrangement efficiency on the representative- , A scribe process, and the like can be simplified.

Further, there is an effect that the photomask used in the manufacturing process of the non-touch display panel can be used as it is.

1 is a plan view of a representative panel in which a plurality of unit display panels are formed.
Fig. 2 shows a state of a display panel including two unit display panels. Fig. 2 (a) is an enlarged plan view, and Fig. 2 (b) shows the arrangement of both unit display panels.
3 is an enlarged plan view of a touch-type display panel according to an embodiment of the present invention.
4 is a plan view and a cross-sectional view of each pixel of a display panel to which an embodiment of the present invention is applied.
5 is a partial plan view of a touch-type display panel according to another embodiment of the present invention.
6 is a partial cross-sectional view of a unit display panel according to an embodiment of the present invention. FIGS. 6A to 6C are cross-sectional views taken along line I-I ', II-II', and III-III ' Respectively.
Figure 7 shows several variants of the invention.
FIG. 8 is a plan view of a unit display panel according to an embodiment of the present invention, showing a unit display panel after being cut by a scribing process.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

1 is a plan view of a representative panel in which a plurality of unit display panels are formed.

The display panel to which the present invention can be applied is a touch-type display panel, more specifically, a touch-integrated display (In-Cell) display panel in which a touch electrode is included in the display panel.

In addition, such a display panel may be formed on one glass mother substrate at a time, and then cut or scribed by a display panel as each individual product. At this time, a boundary line for cutting or separating each panel on the large mother substrate can be called a scribe line or a cutting line. In order to distinguish it from a display panel as a standby plate on which a plurality of display substrates are formed in the manufacturing process, A display panel used as a single product of the present invention will be referred to as a " unit display panel ".

The unit display panel includes a first substrate as an array substrate having pixel regions defined by intersecting regions of gate lines and data lines, the pixel regions including at least one thin film transistor, and a second substrate as a top substrate having a black matrix and / And the substrates are bonded together.

On the other hand, the unit display panel includes a plurality of common electrodes (Vcom) in a display area, and the common electrodes are used to apply an electric field to the liquid crystal material by applying a common voltage to each pixel by a potential difference with the pixel electrode.

In a general display panel, such a common electrode Vcom can be formed on a large plane. However, in a touch-integrated type display panel, since such a common electrode is also used as a touch electrode for touch detection, Therefore, as shown in FIG. 1, the common electrode is divided into a plurality of touch electrodes in the display area.

1, the touch-integrated unit display panel of the GIP type includes a plurality of touch electrodes 110. The plurality of touch electrodes are arranged on one side (lower side in Fig. 1) of the panel through the touch driving wiring 112 And is connected to the data / touch driver (D-IC or T-IC) 120.

The data / touch driver 120 functions as a controller for sensing a touch position by sensing a capacitance by a touch operation after applying a specific signal or voltage to the plurality of touch electrodes 110. In this specification, The data / touch driver 120 is integrated into the data driver circuit (D-IC), but the present invention is not limited thereto. In some cases, the data driver and the touch driver may be distinguished from each other.

On the other hand, the unit display panel includes a GIP driving unit 130 of a GIP type which is formed directly on a display panel as a gate driving circuit in a non-display area on one side (left side in FIG.

The GIP driver 130 may include a plurality of GIP control blocks corresponding to the respective gate lines and generating and providing a gate output signal Vout or Gout for driving the pixels in each gate line. Such a GIP control block may be implemented in each stage of the shift register and the like, but is not limited thereto.

A plurality of signals or pulses used for generating a gate output signal must be provided to the GIP driver 130. These signals are supplied to the data / touch driver 120 or the timing controller, Printed Circuit or the like and applied to the gate driver 130. The wiring used for transferring such a signal may be referred to as a " GIP line " in this specification.

That is, in FIG. 1, a plurality of GIP lines 131 are shown for transferring signals from the data / touch driver 130 to the gate driver 120.

Accordingly, the GIP line or GIP line used in the present specification is a comprehensive line that refers to all kinds of wires, conductors or lines formed on the panel for transmitting various electrical signals or pulses applied to the gate drive circuit or the gate driver in the display panel .

Meanwhile, the GIP line 131 and the touch electrode 110 are both made of a conductive material. In the manufacturing process of such a display panel, static electricity may be generated by contact with a plurality of devices. Such static electricity has a large charge amount, There is a possibility of causing damage to the device.

Therefore, in order to prevent damage from such static electricity, it is necessary to discharge or eliminate the generated static electricity to the outside, and it is necessary to electrically connect the respective conductive elements.

1, a GIP shorting bar 140 electrically connects a plurality of GIP lines 131 to a shorting bar and a plurality of touch electrode shorting bars 150 electrically connecting the plurality of touch electrodes 110, . ≪ / RTI >

Of course, such a shot bar is not necessarily limited to use for static discharge, and may be used in an inspection process such as an array test (ART) by integrally connecting, for example, a GIP line or a data pad or a gate pad have.

Therefore, the expression "shorting bar" as used herein means a conductive pattern formed in a long rod or linear shape to electrically connect together conductive elements or parts of the same or similar property regardless of the application, Inspection wiring, electrostatic discharge wiring, and the like.

And a GIP connection wiring 142 connecting each GIP line 131 and the GIP shorting bar 140. The GIP connection wiring 142 may be formed as a connection wiring for connecting the touch electrode 110 to the touch electrode shorting bar 150 And a touch electrode connection wiring 152.

Since the touch electrode 110 must be connected to the touch driving unit under the panel through the touch driving wiring 112 as described above, the touch electrode shorting bar 150 and the touch electrode connecting wiring 152 are also connected to the touch driving electrode 1 < / RTI >

1, the GIP shorting bar 140 is formed on one side (lower side) of the unit display panel and the touch electrode shortening bar 150 is formed on the opposite side (upper side) of the unit display panel on the basis of one unit display panel .

Fig. 2 shows a state of a display panel including two unit display panels. Fig. 2 (a) is an enlarged plan view, and Fig. 2 (b) shows the arrangement of both unit display panels.

A plurality of unit display panels 100 and 100 'are formed at one time on a display panel as an atmospheric plate, and then cut into a unit display substrate by a cutting or scribing process. At this time, the GIP shorting bar 140 of the first unit display panel 100 and the touch electrode shortening bar 150 of the second unit display panel 100 'are positioned in the same panel-to-panel spacing space as in FIG.

In addition, unless otherwise specified, each Schottenba can be formed of the same layer or material, for example, a transparent electrode (such as ITO) which is a material for forming a pixel electrode or a common electrode.

In this case, when the display panel is a non-touch type non-touch type display panel, a touch electrode and a shorting bar for the touch electrode are not required. ', And only one scribe line 170 is required.

However, when the display panel is a touch-integrated display panel, the GIP shorting bar 140 and the lower unit display panel 100 'located below the upper unit display panel 100, as shown in the right drawing of FIG. Since the touch electrode shorting bars 150 on the upper portion of the touch screen display panel 150 are located in the same spacing space and can not overlap when both shorting bars are the same layer, , Two scribe lines 170 'and 170 " are required to scribe two unit display panels.

In this case, as compared with the manufacturing process of the non-touch display panel, the number of unit display substrates that can be integrated in a glass substrate of a certain area is reduced, so that the glass utilization efficiency is reduced. And the defect rate increases as the spacing distance increases.

In addition, since a photomask used in a photolithography process or the like of the non-touch display panel can not be used, not only a mask for a separate touch panel but also a scribing process is doubled, Can be.

Therefore, an embodiment of the present invention has been proposed in order to solve such a problem, and it is a display panel including at least one unit display panel, which includes a plurality of touch electrodes and a plurality of GIP lines A GIP shorting bar of the first unit display panel and a touch electrode shorting bar of the second unit display panel, the first unit display panel including a first unit display panel and a second unit display panel, The GIP shorting bar of the second unit display panel is formed in a different layer, and the GIP shorting bar of the first unit display panel is formed in the second unit display panel And can have a single scribe line.

In this case, the GIP shorting bar and the touch electrode shorting bar may be respectively formed of two layers selected from a gate layer, a source / drain layer, a pixel electrode layer, and a touch electrode (common electrode) layer, As shown in FIG.

Hereinafter, various embodiments of the present invention will be described with reference to the drawings.

3 is an enlarged plan view of a touch-type display panel according to an embodiment of the present invention.

The display panel according to an embodiment of the present invention includes a first unit display panel 300 and a second unit display panel 300 '. Each unit display panel includes a plurality of touch electrodes 310, a data / A plurality of GIP lines 331 for transmitting various signals or pulses generated in the data / touch driver and transferred to the GIP driver are formed.

At this time, the GIP line 331 may include wiring for transmitting the gate clock CLK, the power supply signals Vdd and Vss, the start signal VST, the end signal END and the like, no.

These GIP lines are usually formed of the same layer or material as the gate electrode, that is, a low resistance metal material such as aluminum (Al), aluminum alloy (AlNd), copper (Cu), copper alloy, molybdenum (MoTi), or the like, but the present invention is not limited thereto.

On the other hand, a GIP shorting bar 340 for shorting a plurality of GIP lines is formed in a long side of the first unit display panel 300, and each GIP line 331 and a GIP shorting bar 340). ≪ / RTI >

A touch electrode shortening bar 350 for electrically connecting all the touch electrodes 310 of the second unit display panel 300 'is formed on the other side of the second unit display panel 300' And may include one or more touch electrode connection wirings 352 and 352 'for electrically connecting the touch electrode 310 and the touch electrode shortening bar 350. [

The touch electrode 310 may be a mutual capacitance type touch electrode which is divided into a driving touch electrode Tx and a sensing touch electrode Rx so as to measure a capacitance difference therebetween And may be a self-capacitance type (Self Cap) touch electrode arranged on the same plane in a lattice-like form without discriminating between transmission and reception, and measuring the self-capacitance.

In this case, the GIP shorting bar 340 and the touch electrode shortening bar 350 are formed in different layers from each other, and the GIP shorting bar 340 of the first unit display panel 300 is connected to the second unit display panel 300 ' The touch electrode shorting bar 350 of the second unit display panel 300 'is disposed closer to the second unit display panel 300' than the touch electrode shorting bar 350 of the first unit display panel 300 ' The first unit display panel 340 is disposed closer to the first unit display panel 340 than the GIP shorting bar 340 of FIG.

Therefore, it is sufficient to cut only once through a single scribe line 370 in the process of cutting or scribing the first unit display panel and the second unit display panel.

The GIP shorting bar of the first unit display panel and the touch electrode shorting bar of the second unit display panel, which are disposed in the spacing space between the two unit display panels, include a touch electrode shorting bar and a GIP show The Tin bar is formed in a different layer, and the GIP shorting bar for its own panel is disposed closer to the other unit display panel than the touch electrode shorting bar of the adjacent unit display panel.

In this case, the GIP shorting bar 340 may be formed of the same layer and material as the pixel electrode or the common electrode, and the touch electrode shorting bar 350 may be formed of the same layer and material as the gate layer, The GIP shorting bar 340 may be formed of the same layer and material as the pixel electrode or the common electrode, and the GIP shorting bar 340 may be formed of the same layer and material as the gate layer, but is not limited thereto.

5, it is sufficient that the GIP shorting bar 340 and the touch electrode shorting bar 350 are formed of different layers with at least one insulating layer interposed therebetween as a conductive material, and GIP The shorting bar 340 and the touch electrode shorting bar 350 may be selected as one of a gate electrode layer, a source / drain electrode layer, a pixel electrode, a touch driving wiring, and a touch electrode (common electrode) layer.

The touch electrode in the embodiment of the present invention can utilize a common electrode region covering a plurality of pixels as one touch electrode as a part of a common electrode for applying a common voltage to the pixels in the display region.

The GIP connection wiring 342 connecting the GIP line 331 and the GIP shorting bar 340 is generally formed of the same layer and material as the GIP shorting bar 340. In this case, And the GIP connection wiring 342 may be regarded as one component as a whole.

Of course, the GIP shorting bar 340 and the GIP connecting wiring 342 do not necessarily have to be formed of the same layer and material as long as they are electrically connected.

Similarly, the touch electrode connection wirings 352 and 352 'for connecting the touch electrode 310 and the touch electrode shortening bar 350 may be formed of the same layer and material as the touch electrode shortening bar 350, no.

For example, as shown in FIG. 3, the touch electrode connection wiring connecting the touch electrode 310 and the touch electrode shortening bar 350 may include a first touch electrode connection wiring 352 And a second touch electrode connection wiring 352 that is connected to the touch electrode shorting bar 350 and extends from the touch electrode shortening bar 350 as one layer and material of the touch electrode shorting bar.

In this case, the first touch electrode connection wiring 352 'and the second touch electrode connection wiring 352 may be electrically connected through the contact hole 354.

4 is a plan view and a cross-sectional view of each pixel of a display panel to which an embodiment of the present invention is applied.

A touch type display panel to which an embodiment of the present invention is applied includes a gate line G1 formed on a first substrate SUBS1 and a gate electrode G extending from a gate line G1, And a semiconductor pattern A formed on the gate insulating film GI so as to overlap a part of the gate electrode G. The gate electrode G1 is formed on the substrate SUBS1, .

The semiconductor pattern A constitutes the active region of the thin film transistor TFT and the amorphous silicon (a-Si), the oxide semiconductor and the like can be used as the material of the semiconductor pattern A. However, in one embodiment of the present invention, It is preferable to use an oxide semiconductor having good mobility and good device characteristics.

Examples of the oxide semiconductor material include zinc oxide (ZnO) -based oxides such as IGZO (Indium Gallium Zinc Oxide), ZTO (Zinc Tin Oxide), ZIO (Zinc Indium Oxide), and the like, but the present invention is not limited thereto .

The display panel according to the present embodiment has the data lines D1 and D2 intersecting the gate line G1 and the source electrode S extending from the data lines D1 and D2 with the gate insulating film GI interposed therebetween. And a thin film transistor (TFT) including a source electrode (S) and a drain electrode (D) facing the source electrode (S). And pixel electrodes P11 and P12 formed in a region defined by the intersection of the gate line G1 and the data line D1 and connected to the drain electrode of the thin film transistor TFT.

An interlayer insulating film INS is formed on the entire surface of the gate insulating film GI on which the data lines D1 and D2 and the transistor TFT and the pixel electrodes P11 and P12 are formed. And a first signal line TY11 and a second signal line TY12 as touch driving wirings overlapping the first and second signal lines D1 and D2. Here, the first signal line TY11 and the second signal line TY12 may be formed of a metal such as aluminum (Al), aluminum-neodymium (AlNd), copper (Cu), molybdenum (Mo), molybdenum- ) Or the like, but it is not limited thereto.

The passivation film PL formed on the front surface of the interlayer insulating film INS in which the first signal line TY11 and the second signal line TY12 are formed and the common electrode formed on the passivation film PL ) C11. The common electrode (touch electrode) C11 may be connected to the second signal line TY12 through the contact hole CH passing through the passivation film PL.

At this time, the gate metal layer or the source / drain metal layer of the gate line or gate electrode may be formed of a metal material having low resistance characteristics such as aluminum (Al), aluminum alloy (AlNd), copper (Cu), copper alloy, molybdenum Alloys (MoTi), and the like.

In this embodiment, the pixel electrode and the common electrode (touch electrode) may be transparent electrodes, and a transparent conductive material having a relatively large work function value such as indium-tin-oxide (ITO) or indium- IZO), or a combination of a metal and an oxide such as ZnO: Al or SnO2: Sb.

The gate insulating film GI, the interlayer insulating film INS and the passivation film PL may be made of an inorganic insulating material such as silicon oxide (SiO2) or silicon nitride (SiNx), but the present invention is not limited thereto. Or may be formed of other materials.

Although the gate insulating film GI, the interlayer insulating film INS, and the passivation film PL are shown as a single layer, they may have two or more multi-layer structures made of different materials. In some cases, some layers may be omitted It might be.

In the above description, the touch-type display device according to various embodiments of the present invention is a liquid crystal display device for convenience of description, and the present invention is not limited thereto. For example, a field emission display device, a plasma display panel, Display devices, organic light emitting display devices, electrophoretic display devices, and the like.

5, electrodes for performing functions of a common electrode and a touch electrode are formed on a lower substrate of a panel together with a pixel electrode for convenience, and a horizontal electric field drive such as an IPS (In Plane Switching) mode and an FFS (Fringe Field Switching) However, the present invention is not limited thereto, and may be applied to various structures in which a touch electrode is formed on an upper substrate, such as a TN (Twisted Nematic) mode and VA (Vertical Alignment) mode.

5 is a partial plan view of a touch-type display panel according to another embodiment of the present invention.

3, the GIP shorting bar 340 is directly connected to the GIP line 331 via the GIP connection line 342. However, as shown in FIG. 5, It would also be possible to include the GIP pad 333 and connect the GIP connection wiring 342 to such a GIP pad 333. [

That is, the GIP shorting bar 340 and the GIP connecting wiring 342 in the present invention may be of any form as long as they are electrically connected to the GIP line 331.

6 is a partial cross-sectional view of a unit display panel according to an embodiment of the present invention. FIGS. 6A to 6C are cross-sectional views taken along line I-I ', II-II', and III-III ' Respectively.

6, a portion of the touch electrode shorting bar 350 and the touch electrode connecting wiring 352 is formed of a gate metal layer, and the GIP shorting bar 340 and the GIP connecting wiring 342 are formed on the same layer as the pixel electrode But the present invention is not limited thereto.

6A, which is a sectional view taken along the line I-I 'of FIG. 5, first, a touch electrode connecting wiring 352 is formed as a gate layer on an insulating substrate 380, and a gate insulating film GI is formed thereon And a GIP shorting bar 340 is formed as a pixel electrode layer on the gate insulating film.

6B, the touch electrode connecting wiring 352 and the GIP connecting wiring 342 are formed parallel to each other with the gate insulating film GI sandwiched therebetween (see FIG. 6B) .

6 (c), the touch electrode shorting bar 350 and the second touch electrode connecting wiring 352 are formed as a gate metal layer on the insulating substrate 380 A gate insulating film GI is formed on the gate insulating film GI and a contact hole 354 is formed to expose one end of the second touch electrode connecting wiring 352 by opening a part of the gate insulating film GI. The first and second touch electrode connection wirings 352 'and the touch electrode (not shown) connected thereto are patterned by a pixel electrode layer on the front surface of the panel where the contact holes are formed, thereby electrically connecting the first and second touch electrode connection wirings .

For example, a low-resistance metal material such as aluminum (Al), an aluminum alloy (AlNd), copper (Cu), or the like may be formed on a transparent insulating substrate 380, A first metal layer is formed by depositing a gate metal material composed of one or two or more materials selected from copper alloy, molybdenum (Mo) and molybdenum alloy (MoTi) on the entire surface of the substrate, A mask process or a photolithography process including a series of unit processes such as exposure using, development of exposed photoresist, partial etching of the first metal layer, and strip of photoresist is performed and patterned to form a touch electrode shorting bar 350 And a second touch electrode connection wiring 352 are formed.

Of course, a gate line (not shown) connected to each pixel region at the same time and a gate electrode of a driving TFT or a pixel TFT may be formed at the same time in this process. If necessary, a GIP line, a GIP pad 333, .

Next, a mask having a transmissive region is placed in a necessary region, and then a gate insulating film (GI) made of an inorganic insulating material is formed by depositing a first inorganic insulating material such as silicon oxide (SiO2) or silicon nitride (SiNx) ).

Next, a semiconductor layer, a source / drain electrode layer and, if necessary, an ohmic contact layer for reducing the contact resistance between the semiconductor layer and the source / drain are formed in the transistor region of the pixel region.

At this time, the semiconductor layer may be formed of an oxide semiconductor material such as IGZO (Indium Gallium Zinc Oxide), ZTO (Zinc Tin Oxide), or ZIO (Zinc Indium Oxide) Or may be formed in an island shape on the gate electrode of each TFT by patterning the oxide semiconductor material layer (not shown) by conducting a masking process.

Of course, the semiconductor layer is not limited to an oxide semiconductor, but may be composed of polysilicon or pure water and impurity amorphous silicon.

The material of the source / drain layer may be copper (Cu), chromium (Cr), molybdenum (Mo), titanium (Ti), tantalum (Ta), molybdenum alloy A source / drain electrode is formed by depositing a source / drain metal layer of such a material on the entire surface of the substrate to form a second metal layer, and then performing a mask process or a photolithography process to pattern the second metal layer.

In this process, data lines (not shown) connected to the respective pixel regions may be formed at the same time.

Next, after forming the source / drain metal pattern, a finger-shaped pixel electrode electrically connected to the drain electrode is formed, and an interlayer insulating film (INS) and / or a passivation film (PL) may be formed thereon.

Although the pixel electrodes are illustrated as being formed on the upper portion in contact with the gate insulating film GI, an additional interlayer insulating film may be formed on the gate insulating film, a portion of the interlayer insulating film may be opened, After the hole is formed, the pixel electrode may be formed on the hole.

In the process of forming the pixel electrode in the pixel region, the GIP shorting bar 340 and the GIP connecting wiring 342 as shown in FIG. 6 are simultaneously formed.

A contact hole 344 having a part of the gate insulating film GI on the GIP pad 333 of the gate layer is formed and a GIP connection wiring 342 of the pixel electrode layer is formed on the contact hole 344, The GIP pad 333 and the GIP connection wiring 342 can be electrically connected.

Next, a common electrode (touch electrode) is formed on the passivation film PL. In the display mode, the common electrode is used to apply a common voltage to form a transverse electric field with the pixel electrode, In the sensing mode, it is used as a touch electrode for recognizing a touch input by detecting a capacitance change.

Since the backlight of the backlight of the panel must pass through the pixel electrode and the common electrode (touch electrode), a transparent conductive material having a relatively large work function value such as indium-tin-oxide (ITO) Oxide (IZO), a combination of a metal and an oxide such as ZnO: Al or SnO2: Sb, but the present invention is not limited thereto.

Figure 7 shows several variants of the invention.

As shown in FIG. 7, the touch electrode shorting bar 350 and the touch electrode connecting wiring 352 according to the embodiment of the present invention are not necessarily limited to the gate metal material, but may be formed of the same material as the source / And the GIP shorting bar 340 and the GIP connecting wiring 342 are formed of the same layer and material as the touch electrode (common electrode), not the pixel electrode. In this case, And the turbulent electrode connection wiring 352 are insulated and separated by the interlayer insulating film INS and the passivation film PL.

7B, the touch electrode connection wiring 352 and the touch electrode shortening bar 350 are used as the gate layer, the GIP connection wiring 342 and the GIP shorting bar 340 are connected to the touch electrode In this case, the two Schotten bars are insulated and separated by three insulating layers such as a gate insulating film (GI), an interlayer insulating film (INS) and a passivation film (PL).

7C, the touch electrode connection wiring 352 and the touch electrode shortening bar 350 are pixel electrode layers, the GIP connection wiring 342 and the GIP shorting bar 340 are connected to the touch electrode ) Layer. In this case, both the Schotten bars are insulated and separated by two insulating layers such as an interlayer insulating film (INS) and a passivation film (PL).

FIG. 8 is a plan view of a unit display panel according to an embodiment of the present invention, showing a unit display panel after being cut by a scribing process.

3 and 5, a plurality of unit display panels are formed. The unit display panels are cut by scribe lines or cutting lines 370 and 370 ', thereby forming unit display panels as unit products .

The unit display panel after cutting through the scribe line 370 as shown in FIG. 5 includes a plurality of touch electrodes arranged in a display area in which a plurality of pixels are defined, and a plurality of touch electrodes arranged in a non- A touch electrode connection wiring 352 for connecting the touch electrode and the GIP line to the touch electrode shorting bar (not shown) and the GIP shorting bar (not shown) before the scribing process, and a plurality of GIP lines formed in the display region, And a GIP connecting wiring 342. The remaining GIP shorting bars 340 'of the unit display panels formed on the touch electrode connecting wiring 352 and the different layer therefrom are formed on one side of the unit display panel And a GIP connection wiring 342 and a remaining touch electrode shorting bar 350 'of another unit display panel formed on a different layer from the GIP connection wiring 342 are included on the opposite side (the lower panel of FIG. 8).

That is, after cutting by the scribing process, each unit display panel does not include its own touch electrode, the touch electrode shorting bar for preventing static electricity of the GIP line, and the GIP shorting bar. Instead, A GIP shorting bar 340 'of another unit display panel in the upper part is included in the upper part of the panel and a touch electrode shorting bar 350' of another unit display panel in the lower part of the lower part is included in the lower part of the panel .

In this specification, the term " remaining shot bar " is used to mean a short bar of another display panel formed for another unit display panel and remaining after cutting.

These remaining touch electrode shorting bars 350 'and GIP shorting bars 340' are used for discharging static electricity which was generated in the upper and lower unit display panels before scribing. However, after the cutting process, It is only included in the unit display panel.

According to the embodiment of the present invention, since the GIP shorting bar of the touch-type display panel and the touch electrode shorting bar of the adjacent display panel or the common electrode shorting bar can be overlapped in the same space with different layers, It is possible to increase the panel arrangement efficiency and to reduce the defective ratio by minimizing the spacing space between the display panels.

In addition, since the scribe line serving as a cutting reference line of each unit display panel can be formed by only a single cutting line without being duplicated, the process can be simplified and the photomask used in the manufacturing process of the non-touch display panel can be used as it is It also includes advantages.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. , Separation, substitution, and alteration of the invention will be apparent to those skilled in the art. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

300: first unit display panel 300 ': second unit display panel
310: touch electrode 320: data / touch driver
331: GIP line 333: GIP pad
340: GIP Shotingba 342: GIP connection wiring
350: Touch electrode shorting bar 352, 352 ': Touch electrode connecting wiring
344, 354: Contact hole

Claims (10)

A display panel for a display device comprising two or more unit display panels,
A first unit display panel and a second unit display panel including a plurality of touch electrodes and a GIP line which is signal wiring to the gate driver;
A GIP shorting bar of the first unit display panel and a touch electrode shorting bar of the second unit display panel disposed in the spacing space between the both unit display panels,
Wherein the touch electrode shorting bar of the first unit display panel and the GIP shorting bar of the second unit display panel are formed in different layers. The method according to claim 1,
Wherein the GIP shorting bars of the first unit display panel are disposed closer to the second unit display panel than the touch electrode shorting bars of the second unit display panel, Wherein the display panel is disposed closer to the first unit display panel than the panel GIP showing bar, thereby having a single scribe line. The method according to claim 1,
Wherein the GIP shorting bar is formed of the same layer and material as the pixel electrode or the common electrode, and the touch electrode shorting bar is formed of the same layer and material as the gate layer. The method according to claim 1,
Wherein the touch electrode shorting bar is formed of the same layer and material as the pixel electrode or the common electrode, and the GIP shorting bar is formed of the same layer and material as the gate layer. The method according to claim 1,
The touch electrode connection wiring may further include a first touch electrode connection wiring extending from the touch electrode in the same layer as the touch electrode, And a second touch electrode connection wiring having one end connected to and extending from the touch electrode shorting bar as the same layer and material. 6. The method of claim 5,
The first and second touch electrode connection wirings are formed of the same layer and material as the common electrode, the second touch electrode connection wirings are formed of the same layer and material as the gate layer, Are electrically connected to each other through a plurality of through-holes. A display panel divided into units by a scribing process,
A plurality of touch electrodes arranged in a display region in which a plurality of pixels are defined; a plurality of GIP lines formed in a non-display region for applying a signal to the gate driver;
And a touch electrode connection wiring and a GIP connection wiring for directly connecting the touch electrode and the GIP line to the touch electrode shorting bar and the GIP shortening respectively before the scribing process,
A GIP shorting bar of another unit display panel formed on the touch electrode connecting wiring and a different unit display panel formed on one side of the unit display panel, and a remaining GIP shorting bar of another unit display panel formed on a different layer from the GIP connecting wiring on the opposite side. And a touch electrode shorting bar. 8. The method of claim 7,
Wherein the touch electrode connection wiring is a gate layer and the remaining GIP shorting bar is a pixel electrode or a common electrode layer. 8. The method of claim 7,
Wherein the GIP shorting bars and the touch electrode shorting bars are insulated and separated by at least one insulating film. 10. The method of claim 9,
Wherein the insulating film is at least one of a gate insulating film (GI), an interlayer insulating film (INS), and a passivation film (PL).

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