KR101675254B1

KR101675254B1 - Display device integrated with touch screen

Info

Publication number: KR101675254B1
Application number: KR1020150101551A
Authority: KR
Inventors: 이재선; 남정영
Original assignee: (주)이미지스테크놀로지
Priority date: 2015-07-17
Filing date: 2015-07-17
Publication date: 2016-11-23

Abstract

The present invention discloses a touch screen integrated display device. An integrated display device according to the present invention includes: a first substrate on which a pixel array is formed; A second substrate coupled to the first substrate with the pixel array interposed therebetween; A plurality of black matrices formed on one surface of the second substrate facing the first substrate; A plurality of conductive patterns formed on the other surface of the second substrate in a direction crossing the plurality of black matrices; And a touch controller that acquires touch information by utilizing the plurality of black matrices and the plurality of conductive patterns as touch sensing electrodes.
According to the present invention, since a plurality of conductive patterns and a plurality of black matrices respectively formed on the upper and lower surfaces of the second substrate of the display device are used as touch sensing electrodes or only a plurality of conductive patterns are used as touch sensing electrodes, It is possible to manufacture a touch screen integrated display device without increasing the thickness of the device. In addition, since the static electricity can be removed through the conductive pattern formed on the upper surface of the second substrate, there is an advantage that the antistatic layer is not formed separately.

Description

[0001] The present invention relates to a display device integrated with a touch screen,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display device, and more particularly, to a touch screen integrated display device using a conventional antistatic layer as a touch sensing electrode.

The touch screen is a device for inputting user's commands by touching the screen of the display device with a hand or an object. It is not necessary to use a separate input device such as a keyboard and a mouse, and can be easily operated through an intuitive interface. .

Such a touch screen is classified into a resistance film type, an electrostatic capacity type, an infrared type, an ultrasonic type, and an electromagnetic induction type according to a method of detecting whether or not the user touches and a contact position. Recently, electrostatic capacitive type touch screens having excellent optical characteristics, durability, and multi-touch sensing performance have been widely used in portable electronic devices.

Conventionally, the touch screen is manufactured as a separate panel, and the touch screen panel is attached to a display panel such as a liquid crystal display device, a light emitting diode display device, on type integrated touch screen type display device is mainly used.

As shown in the schematic sectional view of FIG. 1, the add-on type display device 50 includes a first substrate 11 on which a pixel array 13 is formed on one surface, A display panel 10 having a first substrate 12 and a second substrate 12 bonded to the first substrate 11 and a touch coupled to an upper surface of the display panel 10 (the outer surface of the second substrate 12) A cover panel 30 coupled to an upper surface of the touch screen panel 20, and the like. At this time, the lower polarizing layer 14 may be formed on the lower surface of the first substrate 11 constituting the display panel 10, and the upper polarizing layer 16 may be formed on the upper surface of the second substrate 12 .

An antistatic layer 15 is formed on the upper surface of the second substrate 12 and an antistatic layer 15 is formed on the periphery of the second substrate 12 in order to prevent damage to components due to static electricity generated during the manufacturing process or use. It is connected to the ground terminal. The antistatic layer 15 may be formed on the upper surface of the upper polarizing layer 16.

The add-on type display device 50 has a problem that the entire thickness of the display device 50 increases because the touch screen panel 20 is attached to the upper surface of the display panel 10, Since the touch screen panel 20 must be manufactured separately, there is a limitation in reducing the manufacturing cost due to the dualization of the manufacturing process.

In order to solve such a problem, an in-cell type touch screen integrated type display device in which touch sensing electrodes are formed inside the substrates 11 and 12 constituting the display panel 10, An on-cell type touch screen integrated type display device in which the first substrate 12 is directly formed on the upper surface of the second substrate 12, and the like.

For example, Patent Document 1 discloses an in-cell type display device in which a first touch signal line is formed in the same layer as a gate electrode and a second touch signal line is formed in a lower portion of the black matrix. Patent Document 2 discloses an on-cell type display device in which a touch sensing electrode, a dielectric layer, and a touch driving electrode are sequentially formed on an upper surface of an upper substrate (second substrate) of a liquid crystal display device.

However, according to Patent Document 1, there is a disadvantage in that a manufacturing process is complicated by adding a process of forming a touch sensing electrode in a display device, and the light transmittance is deteriorated due to the touch sensing electrode formed therein, resulting in poor image quality .

According to Patent Document 2, since the electrode for touch detection and the dielectric layer are formed on the outer surface of the display panel, the entire thickness of the display device is increased compared to the in-cell type.

Korean Patent Laid-Open No. 10-2010-0046891 (disclosed on May 7, 2010) Korean Patent Publication No. 10-2014-0041949 (published Apr. 04, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel touch screen integrated type display device which is simple in manufacturing process and does not increase the thickness of a display device.

According to one aspect of the present invention, there is provided a liquid crystal display comprising: a first substrate on which a pixel array is formed; A second substrate coupled to the first substrate with the pixel array interposed therebetween; A plurality of black matrices formed on one surface of the second substrate facing the first substrate; A plurality of conductive patterns formed on the other surface of the second substrate in a direction crossing the plurality of black matrices; And a touch controller that uses the plurality of black matrices and the plurality of conductive patterns as touch sensing electrodes to acquire touch information. The plurality of black matrices may include a through region corresponding to a pixel and an opaque region surrounding the through region, and the plurality of conductive patterns may be formed along an opaque region of the plurality of black matrices.

According to another aspect of the present invention, there is provided a liquid crystal display comprising: a first substrate on which a pixel array is formed; A second substrate coupled to the first substrate with the pixel array interposed therebetween; A plurality of black matrices formed on one surface of the second substrate facing the first substrate; A plurality of conductive patterns formed on the other surface of the second substrate in a direction crossing the plurality of black matrices; A plurality of ground patterns formed on the other surface of the second substrate in the same layer as the plurality of conductive patterns for static elimination; And a touch controller that uses the plurality of black matrices and the plurality of conductive patterns as touch sensing electrodes to acquire touch information. Wherein the plurality of black matrices includes a through region corresponding to a pixel and an opaque region surrounding the through region, wherein the plurality of conductive patterns are formed along an opaque region of the plurality of black matrices, May be formed along the through regions of the plurality of black matrices.

In an integrated display device according to one or more aspects of the present invention, the touch controller may sequentially apply driving signals to the plurality of conductive patterns and receive sensing signals from the plurality of black matrixes.

According to still another aspect of the present invention, there is provided a liquid crystal display comprising: a first substrate on which a pixel array is formed; A second substrate coupled to the first substrate with the pixel array interposed therebetween; A plurality of conductive patterns formed on the second substrate opposite to the first substrate; A touch controller for acquiring touch information by utilizing the plurality of conductive patterns as a touch sensing electrode; And a ground pattern formed on the second substrate in the same layer as the plurality of conductive patterns and grounded for static elimination.

In the integrated type display device according to the present invention, the plurality of conductive patterns may be grounded under the control of the touch controller during a screen driving time in which a screen control signal is supplied to the pixel array.

According to still another aspect of the present invention, there is provided a liquid crystal display comprising: a first substrate on which a pixel array is formed; A second substrate coupled to the first substrate with the pixel array interposed therebetween; A plurality of conductive patterns formed on the second substrate opposite to the first substrate; And a touch controller which obtains touch information by using the plurality of conductive patterns as a touch sensing electrode, wherein during a screen driving time when a screen control signal is supplied to the pixel array, the plurality of conductive patterns All of which are grounded.

The integrated display device according to the present invention may further include pressure sensing means for sensing the touch intensity.

According to the present invention, since a plurality of conductive patterns and a plurality of black matrices respectively formed on the upper and lower surfaces of the second substrate of the display device are used as touch sensing electrodes or only a plurality of conductive patterns are used as touch sensing electrodes, It is possible to manufacture a touch screen integrated display device without increasing the thickness of the device.

In addition, since the static electricity can be removed through the conductive pattern formed on the upper surface of the second substrate, there is an advantage that the antistatic layer is not formed separately.

Further, since the conventional display panel manufacturing process can be manufactured without greatly changing the manufacturing process, the manufacturing cost can be greatly reduced.

1 is a schematic cross-sectional view of a conventional add-on type touch screen
2 is a schematic sectional view of a touch screen integrated display device according to an embodiment of the present invention
Fig. 3 is a view showing an arrangement of a black matrix and a conductive pattern
4 is a view showing various modifications of the black matrix
5 is a view showing a modified example of the conductive pattern
6 is a view showing another arrangement of a black matrix and a conductive pattern
7 is a view showing an electrical connection relationship between a black matrix and a conductive pattern according to an embodiment of the present invention.
8 is a partial sectional view showing a part of a touch screen integrated liquid crystal display (LCD) according to an embodiment of the present invention
9 is a partial cross-sectional view showing a part of a touch screen integrated organic light emitting diode display OLED according to an embodiment of the present invention.
10 is a schematic configuration diagram of a driving system of a touch screen integrated type display device according to an embodiment of the present invention
Figs. 11 and 12 are views showing various cases in which a part of the conductive pattern is used as a ground pattern
13 is a view illustrating a self-capacitance type conductive pattern
14 is a cross-sectional view illustrating a mutual capacitance type conductive pattern

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

FIG. 2 is a diagram showing a schematic sectional structure of a touch screen integrated type display device 100 (hereinafter, referred to as an integrated type display device for convenience) according to an embodiment of the present invention. 1, an integrated display device 100 according to an exemplary embodiment of the present invention includes a first substrate 110 having a pixel array 130 formed on a first surface thereof, a first substrate 110 having a pixel array 130 formed thereon, And a second substrate 120 bonded to the first substrate 110.

The pixel array 130 is formed on the upper surface of the first substrate 110 so as to intersect with the plurality of gate lines and the plurality of data lines, A thin film transistor (TFT) and the like.

When the integrated display device 100 is a liquid crystal display (LCD), for example, a pixel electrode connected to the drain electrode of the thin film transistor TFT and a common electrode formed on the first substrate 110 are connected to the pixel array 130, . When the integrated display device 100 is an organic light emitting diode (OLED) display device, an anode electrode connected to a thin film transistor (TFT), an organic light emitting layer, a cathode electrode, and the like may be included in the pixel array 130.

A non-display region is defined around the display region on which the pixel array 130 is formed on the first substrate 110. A driver circuit such as a gate driver, a data driver, a timing controller or the like may be mounted on the non-display region, The FPCB is mounted. When the integrated display device 100 is a liquid crystal display device, the first substrate 110 must be made of a transparent material so that light emitted from the lower backlight unit can pass therethrough.

The second substrate 120 is made of a transparent material and a plurality of striped black matrices 140 are formed parallel to each other on a surface facing the first substrate 110.

The black matrix 140 includes opaque regions formed along the upper portions of non-pixel regions such as the gate lines, data lines, thin film transistors and the like, and through regions formed at positions corresponding to the respective pixels within the opaque regions.

The black matrix 140 blocks light emitted from adjacent pixels from interfering with each other, and also absorbs light incident from the outside so as not to be reflected.

Meanwhile, in the embodiment of the present invention, a plurality of striped black matrices 140 are used as touch sensing electrodes, and each of the black matrices 140 should be an opaque conductive material. For example, the black matrix 140 may comprise a metal, a metal oxide, a conductive polymer, a conductive resin, or a mixture thereof.

However, the plurality of black matrices 140 formed on the second substrate 120 are not necessarily used as touch sensing electrodes, and only a part of the black matrices 140 may be utilized as the touch sensing electrodes.

3, each of the black matrices 140 is shown to have three through regions along the width direction. However, the widths of the respective black matrices 140 are not limited to the widths of (a) to (c) ) Can be selected variously as shown in Fig.

A color filter 150 such as red (R), green (G), or blue (B) is sequentially and repeatedly formed in each through region of the black matrix 140. At this time, the color filter 150 is not formed only in the penetrating region of the black matrix, but is formed down to the opaque region of the black matrix.

After the black matrix 140 and the color filter 150 are formed on the second substrate 120, a black matrix 140 and a color filter 150 (not shown) are formed to planarize a surface facing the first substrate 110, It is preferable to form a transparent overcoat layer (not shown in the figure) that covers the light-shielding layer.

On the other hand, a plurality of conductive patterns 160 are formed parallel to each other on a surface of the second substrate 120 opposite to the surface on which the black matrix 140 is formed. Each conductive pattern 160 is in the form of a strip and is formed in a direction intersecting (or orthogonal to) the plurality of black matrices 140 as shown in Fig.

Accordingly, in a region where a plurality of black matrices 140 and a plurality of conductive patterns 160 intersect, a capacitor using a second substrate 120 as a dielectric is formed. When a human body or an object touches this portion and the electrostatic capacity changes You can check contact and contact location.

The conductive pattern 160 formed on the second substrate 120 may be formed of a conductive material such as ITO (Indium Tin Oxide), ZTO (Zinc Tin Oxide), ATO (Antimony Tin Oxide) have.

Alternatively, the conductive pattern 160 may be formed using a metal material, a metal oxide, or a mixture thereof, a conductive polymer, a conductive resin, or a mixture thereof.

3, each of the conductive patterns 160 has a constant width, but the shape of the conductive pattern 160 is not limited thereto. For example, as shown in FIG. 5, the conductive patterns 160 may be formed in a substantially rectangular pattern in a line.

3, the gap between the adjacent conductive patterns 160 is much narrower than the width of the conductive patterns 160, but the present invention is not limited thereto.

For example, as shown in FIG. 6, the conductive pattern 160 may be formed with a very thin line width along the upper portion of the opaque region of the black matrix 140. When the conductive pattern 160 is formed with a very thin line width along the opaque region of the black matrix 140 as described above, even when the conductive pattern 160 is formed of an opaque material such as metal, there is an advantage that the decrease in light transmittance can be minimized have.

In addition, the plurality of conductive patterns 160 formed on the second substrate 120 are not necessarily used as electrodes for touch sensing, and some conductive patterns 160 may be grounded to form a ground pattern 11 and 12, 162).

2, a lower polarizing layer 171 is formed on a lower portion of the first substrate 110 and an upper polarizing layer 172 is formed on a conductive pattern 160 formed on the second substrate 120 have. When the integrated display device 100 is an organic light emitting diode display device, the lower polarizing layer 171 may be omitted.

The cover glass 30 may be mounted on the upper polarizing layer 172 to protect the conductive pattern 160 and the upper polarizing layer 172.

The upper polarizing layer 172 may be formed on the upper surface of the second substrate 120 and the conductive pattern 160 may be formed on the upper polarizing layer 172 for touch sensing and / or static elimination.

When the integrated display device 100 is a liquid crystal display device, a liquid crystal layer is formed between the first substrate 110 and the second substrate 120 on which the pixel array 130 is formed. When the integrated display device 100 is an organic light emitting diode display device, an encapsulation layer may be formed between the first substrate 110 and the second substrate 120 on which the pixel array 130 is formed.

A plurality of black matrices 140 and a plurality of conductive patterns 160 formed on the lower surface and the upper surface of the second substrate 120 are used as touch sensing electrodes to sense a user touch, And the plurality of conductive patterns 160 should be electrically connected to the touch controller (450 in FIG. 10).

7, a plurality of first connection pads 212 and a plurality of second connection pads 222 may be formed on the periphery of the second substrate 120, and a plurality of first connection pads 212 may be formed on the periphery of the second substrate 120, And a plurality of second connection pads 222 are connected to the plurality of black matrices 140 through the second signal lines 220 and the plurality of second connection pads 222 are connected to the plurality of conductive patterns 160 through the first signal lines 210, One-to-one connection is possible.

A plurality of first connection pads 212 are formed on a surface of the second substrate 120 opposite to the first substrate 110 while a plurality of second connection pads 222 are formed on a surface of the second substrate 120 1 substrate 110, as shown in FIG.

In order to electrically connect the plurality of first connection pads 212 to the touch controller, a via hole formed in the second substrate 120 and a conductive material (not shown) are formed on the second substrate 120, A plurality of first connection pads 212 may be electrically connected to a circuit pattern formed in a non-display region of the first substrate 110. [ The plurality of second connection pads 222 may be electrically connected to a circuit pattern formed in a non-display region of the first substrate 110 through a conductive material.

Alternatively, a flexible substrate (FPCB) or a rigid substrate (PCB) may be coupled to a plurality of first connection pads 212 formed on the upper surface of the second substrate 120, and a plurality of first connection pads 212 and The circuit patterns of the first substrate 110 may be electrically connected. A flexible substrate or a rigid substrate is connected to a plurality of second connection pads 222 formed on the lower surface of the second substrate 120 and the plurality of second connection pads 222 and the plurality of first connection pads 222 The circuit pattern may be electrically connected.

On the other hand, in order to sense a capacitance change in a region where a plurality of black matrices 140 and a plurality of conductive patterns 160 intersect, one is used as a driving electrode to sequentially receive a driving signal, It should be used as a sensing electrode to detect changes.

For example, a plurality of black matrices 140 may be used as sensing electrodes, and a plurality of conductive patterns 160 may be used as driving electrodes sequentially receiving driving signals.

Conversely, a plurality of conductive patterns 160 may be used as the sensing electrodes, and a plurality of black matrices 140 may be used as the driving electrodes.

However, when sequentially inputting driving signals to a plurality of driving electrodes for touch sensing, all the driving electrodes other than the driving electrodes to which driving signals are inputted can be grounded, so that when a plurality of conductive patterns 160 are used as driving electrodes There is an advantage that the conductive pattern 160 can be utilized as static electricity removing means.

For example, if drive signals are sequentially inputted to 30 conductive patterns 160, the remaining 29 conductive patterns 160 are grounded while a driving signal is inputted to one conductive pattern 160, Most of the static electricity generated during use of the device 100 can be mostly discharged through the conductive pattern 160 in which the driving signal is not inputted. The greater the number of conductive patterns 160, the greater the number of conductive patterns that are grounded during the input of the touch driving signal, thereby increasing the static elimination effect.

On the other hand, in the integrated display device 100, since the screen driving signal is inputted at a constant cycle, it is possible to operate so that the screen driving time and the touch driving time do not overlap. That is, in the screen driving cycle for inputting driving signals to the gate electrode and the source electrode of the thin film transistor through the gate driver and the data driver for screen display, the touch controller does not input the touch driving signal, Can be set to input a touch driving signal.

If the screen driving time and the touch driving time do not overlap, the screen control signal is distorted by the touch driving signal applied to the plurality of black matrices 140 or the plurality of conductive patterns 160, .

On the other hand, if the touch controller controls the switching means (not shown in the drawing) to ground all the conductive patterns 160 during the screen driving time, all the conductive patterns 160 may be utilized as static electricity removing means during the screen driving time.

Hereinafter, a cross-sectional structure of the integrated type liquid crystal display device and the integrated type organic light emitting diode display device to which the embodiments of the present invention are applied will be described in more detail.

8 is a sectional view showing a part of the integrated liquid crystal display device 100a according to the embodiment of the present invention.

The integrated liquid crystal display 100a according to the embodiment of the present invention includes a transparent first substrate 110 on which a pixel array 130 is formed, A substrate 120, and a plurality of conductive patterns 160 formed on the second substrate 120 for touch sensing.

The pixel array 130 is connected to a gate wiring (not shown in the figure) electrically connected to the thin film transistor (TFT) formed on the first substrate 110, the gate electrode 131 and the source electrode 133 of the thin film transistor (Not shown), a thin film transistor (TFT), a protective layer 138 formed on the upper portion of the gate wiring and the data line, a thin film transistor (TFT) formed on the protective layer 138, And a pixel electrode 139 electrically connected to the drain electrode 134 of the thin film transistor (TFT).

The thin film transistor TFT includes a gate electrode 131 formed on the top surface of the first substrate 110, a gate insulating film 132 formed on the first substrate 110 and the gate electrode 131, and a gate insulating film 132 A semiconductor layer 135 formed on the gate electrode 131 and including the active layer 136 and the ohmic contact layer 137, a source electrode 133 formed on the semiconductor layer 135, And a drain electrode 134.

A plurality of black matrices 140 having a penetration region corresponding to the pixel region P are formed on the surface of the second substrate 120 facing the first substrate 110, And the R, G, and B color filters 150 are sequentially formed repeatedly in the respective through regions of the black matrix 140.

An overcoat layer (not shown) is formed under the black matrix 140 and the color filter 150. A common electrode 128 is formed under the overcoat layer to form an electric field with the pixel electrode 139, Can be formed. However, the common electrode 128 may be formed on the first substrate 110 according to the liquid crystal driving method.

The peripheral portions of the first substrate 110 on which the pixel array 130 is formed and the second substrate 120 on which the black matrix 140 and the color filter 150 are formed are bonded and sealed together, A liquid crystal 190 is injected into a space between the second substrates 120.

9 is a cross-sectional view showing a part of the integrated type organic light emitting diode display device 100b according to the embodiment of the present invention.

1, an integrated organic light emitting diode display 100b according to an embodiment of the present invention includes a first substrate 110 on which a pixel array 130 is formed, 2 substrate 120 and a plurality of conductive patterns 160 formed on the second substrate 120 for touch sensing.

The pixel array 130 includes a gate wiring (not shown) electrically connected to the thin film transistor (TFT) formed on the first substrate 110, the gate electrode 331 and the source electrode 333 of the thin film transistor (Not shown), a thin film transistor (TFT), a protective layer 338 formed on the upper portion of the gate wiring and the data line, a thin film transistor (TFT) formed on the protective layer 338, And an organic light emitting diode 340 electrically connected to the drain electrode 334 of the thin film transistor TFT.

The thin film transistor TFT includes a semiconductor layer 335 formed on the upper surface of the first substrate 110, a gate electrode 331 formed on the semiconductor layer 335, a gate electrode 331 formed on the upper surface of the first substrate 110, And a source electrode 333 and a drain electrode 334 connected to both sides of the semiconductor layer 335 through the contact hole.

9 is a top gate type structure in which a gate electrode 331 is formed on an upper portion of a semiconductor layer 335. In the bottom gate type structure in which a gate electrode is formed under a semiconductor layer as shown in FIG. 8, Type thin film transistor.

The organic light emitting diode 340 is formed on the anode electrode 342 and the anode electrode 342 connected to the drain electrode 334 of the thin film transistor TFT through the contact hole formed in the passivation layer 338, Emitting layer 344 for emitting light. And a cathode electrode 346 over the entire surface including the organic light emitting layer 344. [

A pixel is defined by a pixel defining layer 350 formed on a side surface of the anode electrode 342 and an organic light emitting layer 344 is formed in a region where the pixel defining layer 350 is opened. A hole injecting layer, a hole transporting layer, a hole blocking layer, an electron transporting layer, an electron injecting layer, and the like may be formed on the top or bottom of the organic light emitting layer 344.

An encapsulation layer 390 may be formed on the cathode electrode 346 to protect and planarize the organic light emitting diode 340.

On the other hand, an organic light emitting diode display device emits light of R, G, B, and the like in the organic light emitting layer 344, so that a color filter is in principle not required.

However, in the case where white light is emitted from the organic light emitting layer 344, the black matrix 140 and the color filter 150 may be formed on the second substrate 120, like the liquid crystal display device.

In this case, as shown in FIG. 9, a plurality of black matrices 140 and a plurality of conductive patterns 160, which are formed on the lower surface and the upper surface of the second substrate 120 and intersect with each other, .

8 and 9 show the touch screen integrated liquid crystal display device 100a and the touch screen integrated organic light emitting diode display device 100b, respectively, but the present invention is not limited thereto. Accordingly, even in other types of display devices such as a plasma display panel and a field emission display device, a plurality of black matrices 140 and a plurality of conductive patterns 140 are formed on both sides of the second substrate 120, The electrodes 160 may be formed to intersect with each other and be used as electrodes for touch sensing.

Hereinafter, a driving system for an integrated display device 100 according to an embodiment of the present invention will be schematically described with reference to FIG.

As shown in the figure, the driving system of the integrated type display device 100 according to the embodiment of the present invention includes a gate wiring included in the pixel array of the integrated type display device 100 and a gate A timing controller 420 for controlling the operation timing of the gate driver 430 and the data driver 440, a touch sensor 420 for transmitting a drive signal for touch detection, And a controller 410 for controlling the controller 450, the timing controller 420, and the touch controller 450.

The control unit 410 can supply the video data and the synchronization signal to the timing controller 420. [ Also, the touch controller 450 can transmit the image data and the synchronization signal for the screen update to the timing controller 420 using the touch information such as the touch position, the number of touches, and the touch time.

The timing controller 420 may process the image data input from the control unit 410 and supply the image data to the data driver 440. A data control signal for controlling the driving timing of the data driver 440 and a gate control signal for controlling the driving timing of the gate driver 430 can be generated and supplied using the synchronization signal input from the control unit 410. [

The gate driver 430 may sequentially apply a gate-on voltage pulse to each gate line in response to the gate control signal received from the timing controller 420.

The data driver 440 may supply a data signal to a plurality of data lines each time a voltage pulse is applied to each gate line in response to a data control signal received from the timing controller 420. [

The touch controller 450 sequentially applies predetermined voltage pulses to the plurality of conductive patterns 160 and outputs the voltage signals to the plurality of conductive patterns 160 using the output signals of the plurality of black matrices 140, And transmits the calculated information to the control unit 410.

At this time, the touch controller 450 uses a synchronous signal received by the controller 410 or the timing controller 420 to generate a plurality of conductive patterns (for example, a plurality of conductive patterns) at a time that does not overlap with the operation time of the gate driver 430 or the data driver 440 160 can sequentially apply a voltage pulse to detect signals of a plurality of black matrices 140 as described above.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary,

For example, in the above description, the plurality of conductive patterns 160 formed on the upper surface of the second substrate 120 are all used as touch sensing electrodes. However, in consideration of the line width of the conductive patterns 160, A part of the ground electrode 160 may be grounded to be used as a ground pattern for static elimination.

Generally, the reason why the antistatic layer is formed on the display device is to remove the static electricity generated during the manufacturing process of the display device as well as the static electricity generated during the use of the display device. Therefore, if a part of the conductive pattern 160 is grounded from the beginning, there is an advantage that the pixel array can be prevented from being damaged due to the static electricity generated during the manufacturing process.

A method of utilizing some of the plurality of conductive patterns 160 as the grounding pattern for preventing static electricity is not particularly limited.

For example, as shown in FIG. 11, a conductive pattern 160 for touch sensing and a ground pattern 162 may be alternately formed on the upper surface of the second substrate 120. At this time, the conductive pattern 160 for touch sensing and the ground pattern 162 may be the same material or different materials.

Also, the conductive pattern 160 for touch sensing and the ground pattern 162 may be the same width and / or shape, or may be different widths and / or shapes. At least one of the conductive pattern 160 for touch sensing and the grounding pattern 162 is not necessarily formed alternately one by one, .

12, the conductive pattern 160 for touch sensing may be formed to have a thin line width along the opaque region of the plurality of black matrices 140, and may be formed to have a relatively narrow width between the conductive patterns 160 for touch sensing It is also possible to form the grounding pattern 162 with a wide width. That is, the ground pattern 160 may be formed to have a thin line width along the through regions of the plurality of black matrices 140.

In this case, the conductive pattern 160 for touch sensing may be formed of a material having a low resistance, and the ground pattern 162 may be formed of a transparent conductive material having a higher resistance than metal.

In the integrated type display devices 100, 100a and 100b described above, the capacitance change between the plurality of black matrices 140 formed on the lower surface and the upper surface of the second substrate 120 and the plurality of conductive patterns 160 is used I sensed whether I was touching.

However, instead of using the black matrix 140 as a touch sensing electrode, the black matrix 140 may sense a user touch using only the conductive pattern 160 formed on the upper surface of the second substrate 120.

13, a plurality of conductive patterns 160 are formed on the upper surface of the second substrate 12, and a plurality of conductive patterns 160 and a plurality of connection pads 212 (see FIG. 13) May be connected to the signal line 250 in a one-to-one manner to detect a user's touch by a self-capacitance method. This method is a method in which the coordinate of the conductive pattern 160 whose capacitance has changed is recognized as a position touched by the user.

As another example, a user touch may be detected in a mutual capacitance manner. 14, a plurality of first conductive patterns 160a are formed in a first direction on a top surface of a second substrate 12, and a plurality of second conductive patterns 160b are formed in a first direction, The dielectric layer 165 may be formed in a second direction intersecting the first conductive pattern 160a and for insulation in an area where the first conductive pattern 160a and the second conductive pattern 160b cross each other. For example, the touch sensing signal may be sequentially supplied to the plurality of first conductive patterns 160a and the touch sensing signal may be detected through the plurality of second conductive patterns 160b.

As another example, as disclosed in Korean Patent No. 10-1169250, a first conductive pattern and a second conductive pattern are formed in a one-layer pattern adjacent to each other on the upper surface of a second substrate 120 without vertically crossing the first conductive pattern and the second conductive pattern Thus, a user touch may be detected through a change in capacitance between the first conductive pattern and the second conductive pattern.

When only the conductive patterns 160, 160a, and 160b are used as touch sensing electrodes, some of the conductive patterns 160, 160a, and 160b may be grounded to remove static electricity. Also, during the screen driving time, the plurality of conductive patterns 160, 160a, and 160b may be grounded using the switching means.

The integrated display devices 100, 100a and 100b described above detect touch positions and touch times by using the black matrix 140 and the conductive patterns 160 as touch sensing electrodes, And may further include sensing means.

The pressure sensing means may be, for example, a strain gauge mounted on the bottom of the first substrate 110 or on the top of the second substrate 120. Or may be a pressure sensing element formed between the first substrate 110 and the second substrate 120. Or may be a pressure sensing element formed on the periphery of the first substrate 110 or the second substrate 120. [ Other known pressure sensing means may be used in the integrated display device.

The integrated display device described above can be used in portable electronic devices such as mobile communication devices, tablet PCs, notebook computers, MP3s, PDAs, portable multimedia players (PMPs), portable game machines, and DMB receivers. In addition, it may be used in electronic devices such as household appliances such as refrigerators, washing machines, air conditioners, microwave ovens, intercoms, navigation, black boxes and the like. In addition, the integrated display device disclosed in this specification can be used without limitation in various fields such as an industrial device, an ATM, a game machine, a kiosk (KIOSK), a POS terminal and the like.

It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof, and it is to be understood that the invention is not limited to the specific embodiments thereof except as defined in the appended claims.

100, 100a, 100b: integrated display device 110: first substrate
120: second substrate 128: common electrode
130: pixel array 131, 331: gate electrode
132, 332: gate insulating film 133, 333: source electrode
134, 334: drain electrode 135, 335: semiconductor layer
136: active layer 137: ohmic contact layer
138, 338: protection layer 139: pixel electrode
140: Black Matrix 150: Color filter
160: conductive pattern 162: ground pattern
171: lower polarizing layer 172; The upper polarizing layer
180: cover glass 190: liquid crystal
210: first signal line 212: first connection pad
220: second signal line 222: second connection pad
340: organic light emitting element 342: anode electrode
344: organic light emitting layer 346: cathode electrode
350: pixel definition film 390: encapsulation layer
410: controller 420: timing controller
430: gate driver 440: data driver
450: Touch controller

Claims

A first substrate on which a pixel array is formed;
A second substrate coupled to the first substrate with the pixel array interposed therebetween;
A plurality of black matrices formed on one surface of the second substrate facing the first substrate, the black matrix having a through region for each position corresponding to each pixel;
A plurality of conductive patterns formed on the other surface of the second substrate in a direction crossing the plurality of black matrices;
Wherein the plurality of black matrices and the plurality of conductive patterns are electrically connected to a touch controller to be used as capacitive touch sensing electrodes,

The method according to claim 1,
The plurality of black matrices including opaque regions surrounding the through regions,
Wherein the plurality of conductive patterns are formed along opaque regions of the plurality of black matrices.

The method according to claim 1,
And a plurality of ground patterns for removing static electricity are formed on the other surface of the second substrate in the same layer as the plurality of conductive patterns.

The method of claim 3,
The plurality of black matrices including opaque regions surrounding the through regions,
Wherein the plurality of conductive patterns are formed along opaque regions of the plurality of black matrices, and the plurality of ground patterns are formed along the through regions of the plurality of black matrices.

The method according to any one of claims 1 to 4, wherein
Wherein the touch controller sequentially applies driving signals to the plurality of conductive patterns and receives sensing signals from the plurality of black matrices,

A first substrate on which a pixel array is formed;
A second substrate coupled to the first substrate with the pixel array interposed therebetween;
A plurality of conductive patterns formed on a surface opposite to a surface of the second substrate facing the first substrate;
A ground pattern formed on the second substrate in the same layer as the plurality of conductive patterns and grounded for static elimination;
Wherein the plurality of conductive patterns are electrically connected to a touch controller and are used as capacitive touch sensing electrodes,

The method according to any one of claims 1, 3, and 6,
Wherein all of the plurality of conductive patterns are grounded under the control of the touch controller during a screen driving time in which a screen control signal is supplied to the pixel array,

A first substrate on which a pixel array is formed;
A second substrate coupled to the first substrate with the pixel array interposed therebetween;
A plurality of conductive patterns formed on a surface opposite to a surface of the second substrate facing the first substrate;
Wherein each of the plurality of conductive patterns is electrically connected to a touch controller to be used as a capacitive touch sensing electrode and during a screen driving time in which a screen control signal is supplied to the pixel array under the control of the touch controller, The conductive pattern of the touch screen integrated type display device is grounded.

The method according to any one of claims 1, 3, 6, and 8,
The touch screen integrated type display device according to claim 1, further comprising pressure sensing means