KR101692896B1 - Organic electro luminescent device having touch sensing function - Google Patents

Abstract

According to the present invention, a display region including a plurality of pixel regions and a non-display region are defined outside thereof, a switching and driving thin film transistor is provided in each pixel region, a first electrode connected to a drain electrode of the driving thin film transistor, A first substrate having an organic light emitting diode and a second electrode formed on the entire surface of the display region; A second substrate facing the first substrate; A plurality of sensing electrodes spaced apart from an inner surface of the second substrate and connected by a connection pattern in a first direction; A plurality of driving electrodes alternately formed on the inner surface of the second substrate and spaced apart from the plurality of sensing electrodes; A black matrix formed on the plurality of sensing electrodes and a driving electrode at a boundary between the pixel regions and including driving contact holes exposing both ends of the driving electrodes in a second direction; A bridge formed at the same time on the black matrix through the driving contact holes and two driving electrodes neighboring in the second direction; And a color filter layer formed in each of the pixel regions captured by the black matrix.

Description

[0001] The present invention relates to a touch-sensitive organic electroluminescent device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic electroluminescent device, and more particularly, to an organic electroluminescent device capable of improving touch sensitivity and capable of touch recognition.

An organic electroluminescent device, which is one of flat panel displays (FPDs), has high luminance and low operating voltage characteristics. In addition, since it is a self-luminous type that emits light by itself, it has a large contrast ratio, can realize an ultra-thin display, can realize a moving image with a response time of several microseconds (μs), has no viewing angle limit, And it is driven with a low voltage of 5 to 15 V direct current, so that it is easy to manufacture and design a driving circuit.

Such organic electroluminescent devices are used in various applications such as TVs, mobile phones, and PDAs.

In recent years, a product having a function of touching a screen with a built-in touch sensor in a mobile phone, a PDA or a notebook capable of personal carrying has been released and attracts a great deal of interest from users.

Various attempts have been made in recent years in order to have a touch function even in an organic electroluminescent device which has been used as a display device in various applications by taking advantage of this trend.

For example, an organic electroluminescent device of a top emission type is provided with a touch sensor built-in panel having a built-in on-cell type touch center.

However, in the case of attaching the panel with the touch sensor in such an on-cell type, the thickness is increased and becomes heavy, resulting in a trend against the thin and thin type of the display device, and the touch sensor built-in panel itself requires two substrates Manufacturing costs are rising.

In order to overcome this problem, a touch-sensitive organic electroluminescent device has been proposed in which a touch sensor is provided in the organic electroluminescent device as an in-cell type. However, a separate inorganic insulating film must be formed on the cathode electrode, The distance between the touch sensor and the cathode electrode is much shorter than that of the on-cell type organic electroluminescent device, so that the touch of the touch sensor is shortened. There has been a problem of lowering the sensitivity.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above problems, and it is an object of the present invention to provide a touch sensor which can prevent deterioration of touch sensitivity due to a short interval between the touch sensor and a cathode electrode, It is an object of the present invention to provide a touch-sensitive organic electroluminescent device that can realize material reduction and process simplification by substituting for constituent elements of an electroluminescent device.

According to an aspect of the present invention, there is provided a touch-sensitive organic electroluminescent device including a display region including a plurality of pixel regions, a non-display region defined outside the plurality of pixel regions, A first substrate having a first electrode connected to a drain electrode of the driving thin film transistor, an organic light emitting diode and a second electrode formed on the entire surface of the display region; A second substrate facing the first substrate; A plurality of sensing electrodes spaced apart from an inner surface of the second substrate and connected by a connection pattern in a first direction; A plurality of driving electrodes alternately formed on the inner surface of the second substrate and spaced apart from the plurality of sensing electrodes; A black matrix formed on the plurality of sensing electrodes and a driving electrode at a boundary between the pixel regions and including driving contact holes exposing both ends of the driving electrodes in a second direction; A bridge formed at the same time on the black matrix through the driving contact holes and two driving electrodes neighboring in the second direction; And a color filter layer formed in each of the pixel regions captured by the black matrix.

At this time, the plurality of sensing electrodes and the driving electrodes have rhombic or diamond shape, and are formed of a transparent conductive material, and an overcoat layer may be formed on the color filter layer.

Further, the organic light emitting layer is characterized by emitting white light.

In addition, the color filter layer is formed of red, green, blue color filter patterns sequentially repeating for each pixel region, or red, green, blue and white color filter patterns sequentially repeating for each pixel region.

Further, the black matrix is made of black resin, and the bridge is made of a metal material.

Also, the non-display region of the first substrate may include an x-direction sensing circuit connected to an end of the sensing electrode connected by the connection pattern in the first direction, and a driving electrode connected to the driving electrode by the bridge in the second direction And a y-direction sensing circuit connected to each of the ends.

A reflection plate may be provided under the first electrode.

In addition, a gate wiring and a data wiring intersecting each other are formed at the boundaries of the pixel regions of the first substrate, power wiring lines arranged in parallel with the gate wiring or the data wiring are provided, and overlapping with the edge of the first electrode And the bank is formed in a form surrounding the organic light emitting layer.

A touch-sensitive organic electroluminescent device according to the present invention includes a white organic light emitting layer and a color filter pattern, wherein a touch sensor is formed on an inner surface of a second substrate having a color filter pattern, and between the cathode electrode and the touch sensor electrode A color filter having an insulation characteristic and an overcoat layer are provided so that a spacing distance between the cathode electrode and the cathode electrode provided on the first substrate is relatively long, thereby preventing deterioration in touch sensitivity of the touch sensor due to the cathode electrode.

Further, since the bridge for connection with the touch electrode is formed on the black matrix provided at the boundary of the pixel region, there is an effect of preventing the bridge from lowering the visibility due to covering the pixel region.

Further, since the bridge is formed on the black matrix, no separate insulating film is required, so that the material cost can be reduced and the process can be simplified by omitting the insulating film.

1 is a plan view of a portion of a display area of a touch-sensitive organic electroluminescent device according to an embodiment of the present invention.
2 is a cross-sectional view of a portion of a display area of a touch-sensitive organic electroluminescent device according to an embodiment of the present invention
FIGS. 3A to 3D are process plan views of steps of manufacturing a second substrate for a touch-sensitive organic electroluminescent device according to an embodiment of the present invention; FIG.
4A to 4E are cross-sectional views illustrating steps of manufacturing a second substrate for a touch-sensitive organic electroluminescent device according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a portion of a display area of a touch-sensitive organic electroluminescent device according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view of a portion of a display area of a touch-sensitive organic electroluminescent device according to an embodiment of the present invention. Here, for convenience of description, a region where a switching thin film transistor is to be formed is defined as a switching region (not shown), and a region where a driving thin film transistor is formed is defined as a driving region DA.

As shown, the touch-sensitive organic electroluminescent device 101 according to the embodiment of the present invention includes a first substrate 110 on which a driving and switching thin film transistor DTr (not shown) and an organic electroluminescent diode E for emitting white light are formed, And a second substrate 170 having a color filter layer 180 including red, green and blue color filter patterns 180a, 180b and 180c, a black matrix 176 and a touch sensor TS Respectively.

First, the structure of the first substrate 110 including the driving and switching thin film transistor DTr (not shown) will be described.

In the upper portion of the first substrate 110, pure polysilicon is formed corresponding to the switching and driving regions (not shown) in each pixel region P, and a central portion thereof includes a first region 113a constituting a channel, And a second region 113b doped with impurities at a high concentration on both sides of the first region 113a.

Although not shown, a buffer layer (not shown) made of an inorganic insulating material such as silicon oxide (SiO ₂ ) or silicon nitride (SiNx) is formed on the entire surface of the first substrate 110 below the semiconductor layer 113 Or may be formed on the entire surface. The buffer layer (not shown) prevents the characteristic of the semiconductor layer 113 from being deteriorated due to the release of alkali ions from the inside of the first substrate 110 itself when crystallizing the semiconductor layer 113 formed on the buffer layer And may be omitted when a semiconductor layer which does not undergo a crystallization process is provided.

A gate insulating layer 116 is formed on the entire surface of the semiconductor layer 113 and a gate electrode 116 corresponding to the first region 113a of the semiconductor layer 113 is formed on the gate insulating layer 116. [ 120 are formed.

The gate insulating layer 116 is connected to a gate electrode (not shown) for forming a switching thin film transistor (not shown) and extends in one direction to form a gate wiring (not shown).

In addition, an interlayer insulating film 123 is formed on the entire surface of the gate electrode 120 and the gate wiring (not shown). A semiconductor layer contact hole 125 is formed in the interlayer insulating layer 123 and the gate insulating layer 116 below the interlayer insulating layer 123 to expose each of the second regions 113b located on both sides of the first region 113a .

On the other hand, a data line (not shown) is formed on the interlayer insulating layer 123 including the semiconductor layer contact hole 125 to intersect the gate line (not shown) to define each pixel region P, (Not shown) so as to be spaced apart from each other. At this time, the power supply line (not shown) may be formed on the gate insulating layer 116 to be spaced apart from the gate line (not shown).

And a second region 113b which is spaced apart from each other in the driving region DA and the switching region (not shown) above the interlayer insulating layer 123 and exposed through the semiconductor layer contact hole 125, (133, 136) are formed. The semiconductor layer 113 includes the source and drain electrodes 133 and 136 and a second region 113b that is in contact with the two electrodes 133 and 136, The gate insulating film 116 and the gate electrode 120 are formed as a driving thin film transistor DTr and a switching thin film transistor (not shown), respectively. At this time, the switching thin film transistor (not shown) is electrically connected to the driving thin film transistor DTr, a gate wiring (not shown) and a data wiring (not shown). The power supply wiring (not shown) is connected to the driving thin film transistor DTr.

Meanwhile, the driving and switching thin film transistor DTr (not shown) forms a p-type or n-type thin film transistor according to impurities doped in the second region 113b. In the case of the p-type thin film transistor, the second region 113b is formed by doping a group III element such as boron (B), and holes are used as carriers.

The first electrode 147 connected to the drain electrode 136 of the driving thin film transistor DTr functions as an anode or a cathode electrode depending on the type of the driving thin film transistor DTr. In the embodiment of the present invention, the first electrode 147 connected to the drain electrode 136 of the driving TFT DTr serves as an anode electrode.

In the touch-sensitive organic electroluminescent device 101 according to the embodiment of the present invention, the driving thin film transistor DTr and the switching thin film transistor (not shown) have a polysilicon semiconductor layer 113, (Top gate type). However, the driving and switching thin film transistor (DTr, not shown) may be a bottom gate type having a semiconductor layer of amorphous silicon.

When the driving and switching thin film transistors are configured as a bottom gate type, the laminated structure is separated from the active layer of the gate electrode / the gate insulating film / the pure amorphous silicon and the semiconductor layer composed of the ohmic contact layer of the impurity amorphous silicon / And a source electrode and a drain electrode. At this time, the gate wiring is formed to be connected to the gate electrode of the switching thin film transistor in the layer where the gate electrode is formed, and the data wiring is formed so as to be connected to the source electrode in the layer in which the source electrode of the switching thin film transistor is formed.

On the other hand, a protective layer 140 having a flat surface over the entire surface of the driving and switching thin film transistor DTr (not shown) is formed.

A drain contact hole 143 exposing the drain electrode 136 of the switching and driving thin film transistor (not shown) is formed in the passivation layer 140. Although not shown in the drawing, A gate contact hole (not shown) for exposing the gate electrode 120 of the driving thin film transistor DTr is formed in the interlayer insulating layer 140 and the interlayer insulating layer 123.

The drain electrode 136 and the drain contact hole 143 of the driving thin film transistor DTr are formed on the protection layer 140 having the drain contact hole 143 and the gate contact hole And a first electrode 147 is formed for each pixel region P. The first electrode 147 may be made of a transparent conductive material having a relatively large work function value such as indium-tin-oxide (ITO) or indium-zinc-oxide (IZO) (Al), an aluminum alloy (AlNd), and silver (Ag), which are excellent in reflection efficiency, are formed under the first electrode 147 in order to maximize light efficiency of light emitted from the organic light emitting layer. A reflection plate 146 made of a single material is provided. In the drawing, the reflector 146 is formed to have the same area and shape as the first electrode 147 in plan view.

A drain contact (not shown) exposing the drain electrode (not shown) of the switching thin film transistor (not shown) and the gate electrode 120 of the driving thin film transistor DTr is formed on the protection layer 140, A drain gate connection pattern (not shown) which simultaneously contacts the drain electrode 136 of the switching thin film transistor (not shown) and the gate electrode 120 of the driving thin film transistor DTr through a hole 143 and a gate contact hole (Not shown) is formed.

A bank 150 is formed on the border of each pixel region P above the first electrode 147 to overlap the edge of the first electrode 147 in such a manner as to surround each pixel region P . At this time, the bank 150 is formed of any one of organic insulating materials such as polyimide, photo acryl, and benzocyclobutene (BCB).

An organic light emitting layer 155 is formed on each of the pixel regions P surrounded by the bank 150 so that the organic light emitting layer 155 emits white light on the first electrode 147, 155, a second electrode 158 is formed on the entire surface of the display region for displaying an image. The second electrode 158 may be formed of a metal material having a relatively low work function such as aluminum (Al), aluminum alloy (AlNd), silver (Ag), magnesium (Mg) , An aluminum-magnesium alloy (AlMg), and a magnesium-silver alloy (MgAg).

At this time, the first electrode 147, the organic light emitting layer 155, and the second electrode 158, which are sequentially stacked in each pixel region P, form an organic light emitting diode E.

Although not shown in the drawing, a multilayer structure (not shown) may be formed between the first electrode 147 and the organic emission layer 155, and between the organic emission layer 155 and the second electrode 158, A first light emission compensation layer (not shown) and a second emission compensation layer (not shown) may be further formed.

At this time, the first emission compensation layer (not shown) of multiple layers is sequentially stacked from the first electrode 147, and is composed of a hole injection layer and a hole transporting layer, A compensation layer (not shown) is formed of an electron transporting layer and an electron injection layer from the organic light emitting layer 155. The first emission compensation layer (not shown) and the second emission compensation layer (not shown) of the multi-layer structure may be formed on the entire surface of the display region or may be formed separately for each pixel region P have.

On the other hand, it serves as an encapsulation for preventing oxygen and moisture penetration into the organic light emitting diode corresponding to the first substrate 110 having the above-described configuration, A color filter layer 180 for selectively transmitting only light of a specific wavelength band to display red, green, and blue colors, and a second substrate 170 having a touch sensor TS, which is a characteristic feature of the present invention .

More specifically, the components provided in the second substrate 170 will be described in detail.

On the inner surface of the second substrate 170, a transparent conductive material such as indium-tin-oxide (ITO) or indium-zinc-oxide (IZO) A plurality of sensing electrodes 172 and driving electrodes 174 are provided. At this time, the sensing electrode 172 and the driving electrode 174 are formed in a diamond or rhombic shape and are spaced apart from each other and alternately and regularly formed.

At this time, the sensing electrodes 172 are connected in the horizontal direction by the connection pattern 173, and the driving electrodes 174 are separated in each unit area.

The sensing electrode 172 or the driving electrode 174 corresponds to a gate and a data line (not shown) provided on the first substrate 110 on the sensing electrode 172 and the driving electrode 174, A black matrix 176 having openings for exposing the black matrix 176 is formed. At this time, the black matrix 176 is provided with driving contact holes 178 corresponding to the driving electrodes 174 adjacent to each other in the longitudinal direction and exposing the adjacent driving electrodes 174.

Each of the sensing electrodes 172 and the driving electrodes 174 may be several times to several tens of times larger in size than the pixel regions P, The black matrix 176 is formed to penetrate through the through hole.

A plurality of bridges 179 are provided on the black matrix 176 to contact the sensing electrodes 172 adjacent to each other through the driving contact holes 178. The bridge 179 may be formed of any one of a metal material such as aluminum (Al), aluminum alloy (AlNd), copper (Cu), copper alloy, molybdenum (Mo), molybdenum alloy (MoTi), and titanium . At this time, the plurality of bridges 179 are connected to two adjacent driving electrodes 174 and are formed in a bar shape.

Accordingly, two neighboring sensing electrodes 172 are electrically connected by a connection pattern 173 provided in the same layer in which the sensing electrodes 172 are formed in the lateral direction, and two adjacent driving electrodes 174 Are electrically connected to each other by the bridge 179 in the longitudinal direction.

All the sensing electrodes 172 formed on substantially the same row are electrically connected to each other by the connection pattern 173 and all the driving electrodes 174 formed in the same column are electrically connected to each other by the bridge 179 As shown in Fig.

Next, red, green and blue color filter patterns 180a, 180b and 180c are formed on the sensing electrode 172 and the driving electrode 174 in the opening overlapped with the black matrix 176 and surrounded by the black matrix 176 A white color filter pattern (not shown) is added in addition to the color filter layer 180 in the form of a sequential repeating pattern or the color filter patterns 180a, 180b and 180c of the three colors described above to form four color filter patterns 180a and 180b , And 180c (not shown). In the drawing, a color filter layer 180 composed of three color filter patterns 180a, 180b and 180c of red, green and blue is shown as an example.

On the other hand, the color filter layer 180 transmits light emitted from the organic light emitting layer 155 that emits white light, and selectively transmits only light in a wavelength range indicating red, green, and blue, thereby forming a red color filter pattern 180a The red color is displayed in the pixel region P and the green and blue colors are displayed in the pixel region P in which the rust and blue color filter patterns 180b and 180c are formed. The white color filter pattern (not shown) transmits white light through the organic light emitting layer as it is.

An overcoat layer 185 is formed on the entire surface of the second substrate 170 so as to cover the color filter layer 180, the bridge 179, and the black matrix 176. At this time, the overcoat layer 185 is formed for protecting the color filter layer 180 and may be omitted.

The first substrate 110 and the second substrate 170 having the above-described configuration are positioned so that the organic electroluminescent diode E and the color filter layer 180 face each other. The first substrate 110 and the second substrate 170 A face seal (not shown) made of a frit, an organic insulating material, or a polymer material, which is adhered by a seal pattern (not shown) formed along the edge of the substrate The first and second substrates 110 and 170 are fixed by the face seal (not shown) so as to be in complete contact with the first substrate 110 and the second substrate 170, Thereby forming the touch-sensitive organic electroluminescent device 101 according to the embodiment.

Although not shown in the drawing, an X-direction sensing circuit (not shown) is connected to the sensing electrode 172 and the driving electrode 174 in a non-display region outside the display region for displaying an image of the first substrate 110, And a Y-direction sensing circuit (not shown).

In the drawing, the sensing electrodes 172 formed in the same row are connected by the connection pattern 173 in the lateral direction, and the driving electrodes 174 provided in the same column are connected in the longitudinal direction by the bridge 179 The sensing electrodes 172 may be connected by a bridge 179 and the driving electrodes 174 may be connected by a connection pattern 173. In this case,

When an appropriate voltage is applied to the sensing electrode 172 and the driving electrode 174, the organic electroluminescent device according to the embodiment of the present invention having the above- And the driving electrode 174, a fringe capacitor having a predetermined size is formed over the entire display region.

In this state, when the user touches the outer surface of the second substrate 170 using a finger or the like while looking at the outer surface of the second substrate 170, the sensing electrode 172 And the driving electrode 174 formed adjacent to the driving electrode 174 are changed. When the fringing capacitance is changed, the touch is generated by the X-direction and Y-direction sensing circuits (not shown) And the touch-sensing organic electroluminescent device 101 performs an operation corresponding to a portion where the touch is generated.

On the other hand, the sensitivity of the capacitor type touch sensor TS is defined as the magnitude of the change amount of the capacitance which is changed by touching the capacity of the reference capacitor, The sensitivity of the touch sensor TS can be improved. At this time, in order to reduce the capacity of the reference capacitor, the influence of the components provided below the capacitor should be minimized.

In a case where a touch sensor is provided using an organic electroluminescent device according to a comparative example in which a color filter layer and a black matrix are not provided on a second substrate and colors are expressed using an organic light emitting layer emitting red, 2 substrate does not have a color filter layer, a black matrix, or the like, the spacing between the first and second substrates becomes relatively small. Therefore, since the fringe capacitor expressed by the sensing electrode and the driving electrode is affected by the second electrode, it is necessary to apply a relatively larger voltage so that a larger fringe capacitor is formed on the sensing electrode and the driving electrode, In order to reduce the influence of the two electrodes, an inorganic insulating material or the like must be deposited on the second electrode to further form an inorganic film.

Therefore, the touch recognition organic electroluminescent device according to this comparative example is complicated in that the sensing sensitivity of the touch-sensitive organic electroluminescent device 101 according to the embodiment of the present invention is lowered or the process of forming a separate inorganic film is complicated And the manufacturing cost is increased.

In addition, since the touch sensing organic electroluminescent device according to the comparative example needs to form another insulating film covering the sensing electrode and the driving electrode in order to form the bridge 179, the process becomes complicated and the manufacturing cost is increased.

However, in the case of the touch-sensitive organic electroluminescent device 101 according to the embodiment of the present invention, since the color filter layer 180 and the black matrix 176 are provided on the inner side of the second substrate 170, These elements can naturally suppress the influence on the fringe capacitors that are developed between the sensing electrode 172 and the driving electrode 174 and can prevent the bridge between the driving electrodes 174 and the neighboring driving electrodes 174 179 are formed by using the black matrix 176 as an insulating layer, no separate insulating film is required. Therefore, it is superior to the touch-sensitive organic electroluminescent device according to the comparative example in terms of manufacturing cost reduction and process simplification.

Hereinafter, a method of manufacturing a touch-sensitive organic electroluminescent device according to an embodiment of the present invention will be described. Hereinafter, a method of fabricating a first substrate in which a switching and driving thin film transistor and an organic light emitting diode are formed in a touch-sensitive organic electroluminescent device according to an embodiment of the present invention includes the steps of: Therefore, a description thereof will be omitted. The structure characteristic to the present invention is described on the second substrate, and therefore, the manufacturing method of the second substrate will be mainly described.

FIGS. 3A to 3D are process plan views of steps of manufacturing a second substrate for a touch-sensitive organic electroluminescent device according to an embodiment of the present invention. FIGS. 4A to 4E are cross- Sectional view of a process for manufacturing a second substrate. 3A and 4A, a transparent conductive material such as indium-tin-oxide (ITO) or indium-zinc-oxide (IZO) is deposited on a transparent second substrate 170 to form a transparent conductive material layer (Not shown).

Thereafter, the transparent conductive material layer (not shown) is patterned by applying a photoresist, exposing by using an exposure mask, developing the exposed photoresist, and performing a mask process including a unit process of etching and strip, A sensing electrode 172 and a driving electrode 174 having a rhombic or diamond shape and alternating shapes are formed. At this time, the sensing electrode 172 or the driving electrode 174 formed in the same row or column by further forming the connection pattern 173 between the sensing electrodes 172 adjacent to each other in the transverse direction or between the driving electrodes 174 Make all connections. In the drawing, for example, the sensing electrodes 172 positioned in the same row are connected in the horizontal direction by the connection pattern 173.

Next, as shown in FIGS. 3B and 4B, a black resin layer or the like is coated on the sensing electrode 172, the driving electrode 174 and the connection pattern 173 to form a black resin layer (not shown) A black matrix 176 is formed corresponding to the gates and data lines (not shown in FIG. 1) provided in the boundary of the pixel region, that is, the first substrate 110 (FIG. 1). The black matrix 176 is formed to have driving contact holes 178 for exposing both longitudinal ends of the driving electrodes 174 which are not connected by the connection pattern 173, to be.

Next, as shown in FIGS. 3C and 4C, a metal material such as aluminum (Al), an aluminum alloy (AlNd), copper (Cu), or the like is deposited on the black matrix 176 having the drive contact holes 178, The two driving electrodes 174 neighboring in the longitudinal direction through the driving contact hole 178 are formed by depositing and patterning any one of a copper alloy, molybdenum (Mo), molybdenum alloy (MoTi), and titanium (Ti) Respectively, are formed.

 Next, as shown in FIGS. 3D and 4D, a red resist layer (not shown) is formed on the black matrix 176 on which the bridge 179 is formed to form a red resist layer (not shown), and the black matrix 176 And the green and blue color filter patterns 180b and 180c are formed adjacent to the red color filter pattern 180a in the same manner as the black matrix 176 The color filter layer 180 having the shape in which the red, green, and blue color filter patterns 180a, 180b, and 180c are repeated one after another is formed.

On the other hand, in the case of a color filter layer including four color filter patterns 180a, 180b and 180c (not shown) including a white color filter pattern (not shown), although not shown in the figure, red, , 180b, and 180c and adjacent to the blue color filter pattern 180c to form a white color filter pattern (not shown). At this time, since the white color can be displayed by forming only the overcoat layer (185 in FIG. 4E) without forming the white color filter pattern (not shown) separately, the red, green and blue color filter patterns 180a, 180b and 180c The step of forming the white color filter pattern (not shown) may be omitted.

 Next, as shown in FIGS. 3D and 4E, a transparent organic insulating material such as photo acryl or benzocyclobutene (BCB) is applied on the color filter layer 180 to form an overcoat layer 185 Thereby completing the second substrate 170 for a touch-sensitive organic electroluminescent device according to the present invention. At this time, the overcoat layer 185 is not necessarily formed and may be omitted.

1, the first substrate 110 includes a switching and driving thin film transistor (not shown, DTr) and an organic light emitting diode (E) And the color filter layer 180 are positioned so that the organic electroluminescent diode E and the color filter layer 180 face each other and the first substrate 110 and the second substrate (Not shown) along the edges of the substrate 110 and 170, and then the two substrates 110 and 170 are bonded together in a vacuum or an inert gas atmosphere. Alternatively, a frit, an organic insulating material (Not shown) formed on one of the first substrate 110 and the second substrate 170 without an air layer, the first and second substrates 110 and 110, 170) is adhered so as to be in complete contact with the above-mentioned Pate seal (not shown) To complete the touch-sensitive organic light emitting device 101 according to the embodiment name.

Although not shown in the figure, each end of the sensing electrode 172 connected in the horizontal direction and the driving electrode 174 connected in the vertical direction by the bridge 179 are formed in a non-display region of the first substrate 110 direction sensing circuit (not shown) and an x-direction sensing circuit (not shown).

110: first substrate 113: semiconductor layer
113a: first region 113b: second region
116: gate insulating film 120: gate electrode (of the driving thin film transistor)
123: interlayer insulating film 125: semiconductor layer contact hole
133: source electrode (of the driving thin film transistor)
136: drain electrode (of the driving thin film transistor)
140: protective layer 143: drain contact hole
145: planarization layer 147: first electrode
150: bank 155: organic light emitting layer
158: second electrode 170: second substrate
172: sensing electrode 174: driving electrode
176: black matrix 178: driven contact hole
179: Bridge 180: Color filter layer
180a, 180b, 180c: red, green, and blue color filter patterns
DA: driving region DTr: driving thin film transistor
E: organic electroluminescent diode P: pixel region

Claims (10)

A first electrode connected to a drain electrode of the driving thin film transistor, an organic light emitting layer, and a second electrode connected to the drain electrode of the driving thin film transistor, And a second electrode formed on the entire surface of the display region;
A second substrate facing the first substrate;
A plurality of sensing electrodes spaced apart from an inner surface of the second substrate and connected by a connection pattern in a first direction;
A plurality of driving electrodes alternately formed on the inner surface of the second substrate and spaced apart from the plurality of sensing electrodes;
A black matrix formed on the plurality of sensing electrodes and a driving electrode at a boundary between the pixel regions and including driving contact holes exposing both ends of the driving electrodes in a second direction;
A bridge formed at the same time on the black matrix through the driving contact holes and two driving electrodes neighboring in the second direction;
A color filter layer formed in each of the pixel regions captured by the black matrix;
An overcoat layer disposed over the color filter layer
And a touch-sensitive organic electroluminescent device.

The method according to claim 1,
Wherein the plurality of sensing electrodes and the driving electrodes have rhombic or diamond shapes and are made of a transparent conductive material.
delete The method according to claim 1,
Wherein the organic light emitting layer emits white light.
The method according to claim 1,
Wherein the color filter layer comprises red, green, blue, and blue color filter patterns sequentially repeating for each pixel region, or red, green, blue, and white color filter patterns sequentially repeating for each pixel region. .
The method according to claim 1,
Wherein the black matrix is made of black resin, and the bridge is made of a metal material.
The method according to claim 1,
An x-direction sensing circuit connected to the non-display area of the first substrate and connected to an end of the sensing electrode connected by the connection pattern in the first direction, and an end of the driving electrode connected by the bridge in the second direction, And a y-direction sensing circuit connected to each of the plurality of touch sensing circuits.
The method according to claim 1,
And a reflective plate is disposed under the first electrode.
The method according to claim 1,
Wherein a gate wiring and a data wiring intersecting each other are formed at the boundaries of each pixel region of the first substrate and power wiring lines arranged in parallel with the gate wiring or the data wiring are provided.
The method according to claim 1,
And a bank is formed in a shape that overlaps the edge of the first electrode and surrounds the organic light emitting layer.

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