KR20200050651A - Organic lighting apparatus having touch function - Google Patents

Abstract

The present invention relates to a lighting device embedded with a touch sensor which comprises: a substrate; a lighting area comprising an organic light emitting element configured of a first electrode, an organic light emitting layer, and a second electrode formed on the substrate and an auxiliary electrode in connection with the first electrode to apply a signal to the first electrode; and a touch region comprising a first touch electrode formed on the substrate. The first touch electrode is made of the same material as that of at least one of the auxiliary electrode and the first electrode of the lighting area. According to the present invention, a user can easily control the lighting device.

Description

Organic lighting device with touch function {ORGANIC LIGHTING APPARATUS HAVING TOUCH FUNCTION}

The present invention relates to an organic lighting device having a touch panel.

Currently, fluorescent or incandescent lamps are mainly used as lighting devices. Of these, incandescent lamps have good color rendering index but have very low energy efficiency. Fluorescent lamps have good efficiency but low color rendering index and contain mercury.

In order to solve the problem of the conventional lighting device, a light emitting diode (LED) has recently been proposed as a lighting device. The light-emitting diode is composed of an inorganic light-emitting material, has the highest luminous efficiency in the blue wavelength band, and the luminous efficiency decreases toward the red and green wavelength bands with the highest visibility. Therefore, when emitting white light that combines a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode, there is a problem that the luminous efficiency is lowered. In addition, when using a red light-emitting diode, a green light-emitting diode, or a blue light-emitting diode, there is a problem that the color rendering property is also lowered because the width of each light emission peak is narrow.

In order to solve this problem, instead of combining a red light emitting diode, a green light emitting diode, and a blue light emitting diode, a lighting device that combines a blue light emitting diode and a yellow color phosphor to output white light has been proposed. The reason why the light emitting diode having such a structure is proposed is that the method using only a blue light emitting diode with high efficiency and using the fluorescent material emitting blue light with blue light is more efficient than using a green light emitting diode with low light emission efficiency. Because it is.

However, even in the case of a lighting device that outputs white light by combining a blue light-emitting diode and a yellow color phosphor, the fluorescent material itself that emits yellow (yellow) light has poor luminous efficiency. There were limits.

In order to solve the problem that the luminous efficiency is lowered as described above, a lighting device using an organic light emitting device made of an organic light emitting material has been proposed. In general, the organic light emitting device has a relatively good emission efficiency of green and red compared to the inorganic light emitting device. In addition, the organic light emitting device has an advantage in that the color rendering property is improved and the light of the light emitting device is more similar to sunlight because the width of the blue, red, and green emission peaks is relatively wider than that of the inorganic light emitting device.

Since such a lighting device can be formed in a thinner thickness than a fluorescent lamp or an incandescent lamp, it can be installed inside a general building and can be applied to various uses such as a car interior lamp.

An organic lighting device using an organic light emitting device can be used for various purposes. For example, the organic lighting device may be used as an interior light inside a building or an interior light of a car. However, in order to use such an organic lighting device, the user must operate the operation switch. If the lighting device is used as the interior light inside the building, there is no problem in operating the switch, but when using the lighting device as the interior light of the car, the user must operate a mechanical switch such as a button directly while driving. The operation of the switch button can put the driver around and put the driver in danger.

To solve this problem, the touch panel applied to the display device is installed in the lighting device so that the driver can drive the lighting device simply by touching the lighting device, but in this case, a separate touch panel must be installed in front of the lighting device. The thickness of the lighting device increases and the manufacturing cost increases.

It is made in view of the above and the points of the present invention, and an object of the present invention is to provide a lighting device having an organic light emitting device capable of reducing manufacturing cost and having a small thickness due to a built-in touch sensor.

Another object of the present invention is to provide an illumination device having an organic light emitting device that can easily operate the touch sensor by forming an index area that emits light capable of recognizing the position of the touch sensor around the touch sensor. Is to do.

In order to achieve the above object, the lighting device according to the present invention includes a substrate; An illumination region including a first organic light emitting element composed of a first electrode, a first organic light emitting layer and a second electrode formed on the substrate, and an auxiliary electrode connected to the first electrode to apply a signal to the first electrode; And a first touch electrode formed on the substrate, wherein the first touch electrode is made of the same material as at least one of the auxiliary electrode and the first electrode in the illumination area.

An index area is disposed around the touch area to indicate the position of the touch area, and the index area includes a second organic light emitting device including a third electrode, a second organic light emitting layer, and a third electrode. At this time, the third electrode is made of the same material as the first electrode, the fourth electrode is made of the same material as the first electrode, and the second organic light emitting layer is made of the same material as the first organic light emitting layer.

In addition, a sealing material is applied to the illumination area, the index area, and the touch area, and a metal foil is attached to the outside of the sealing material. At this time, the metal foil is grounded to form a first touch electrode and a self-capacitance type touch sensor.

In addition, a sealing material is applied to the illumination area and the index area, a metal foil is attached to the outside of the sealing material, and a film may be disposed on the first touch electrode of the touch area.

The touch area may be formed on at least one side of the four edges of the substrate or may be formed on at least one side of the four sides of the substrate. The index area outputs white light or monochromatic light.

In the present invention, by providing a touch sensor in the lighting device, the user can easily operate the lighting device.

In addition, in the present invention, it is possible to prevent the increase in the thickness and volume of the lighting device by incorporating the touch sensor into the lighting device, and to prevent the increase in manufacturing cost.

Moreover, in the present invention, since an index area indicating the position of the touch sensor is formed around the touch sensor, the user can easily grasp the position of the touch sensor in the lighting device, thereby easily operating the lighting device.

1 is a plan view schematically showing a lighting device according to a first embodiment of the present invention.
2 is a cross-sectional view briefly showing a lighting device according to a first embodiment of the present invention.
3 is a plan view specifically showing the structure of a lighting device according to a first embodiment of the present invention.
4 is a cross-sectional view showing in detail the structure of a lighting device according to a first embodiment of the present invention.
5 is a cross-sectional view specifically showing another structure of the lighting device according to the first embodiment of the present invention.
6 is a cross-sectional view specifically showing the structure of a lighting device according to a second embodiment of the present invention.
7 is a cross-sectional view specifically showing the structure of a lighting device according to a third embodiment of the present invention.
8A and 8B are plan views schematically showing a structure of a lighting device according to a fourth embodiment of the present invention.
9A to 9D are plan views showing a method of manufacturing a lighting device according to the present invention.
10A to 10D are cross-sectional views showing a method of manufacturing a lighting device according to the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the general knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments of the present invention are exemplary and the present invention is not limited to the illustrated matters. The same reference numerals refer to the same components throughout the specification. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted. When 'include', 'have', 'consist of', etc. mentioned in the specification are used, other parts may be added unless '~ man' is used. When a component is expressed as a singular number, the plural number is included unless otherwise specified.

In interpreting the components, it is interpreted as including the error range even if there is no explicit description.

In the case of the description of the positional relationship, for example, when the positional relationship of two parts is described as '~ top', '~ upper', '~ bottom', '~ side', etc., 'right' Alternatively, one or more other parts may be located between the two parts unless 'direct' is used.

In the case of a description of a time relationship, for example, 'after', 'following', '~ after', '~ before', etc. When a temporal sequential relationship is described, 'right' or 'direct' It may also include cases that are not continuous unless it is used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

Each of the features of the various embodiments of the present invention may be partially or wholly combined or combined with each other, technically various interlocking and driving is possible, and each of the embodiments may be independently performed with respect to each other or may be implemented together in an association relationship. It might be.

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

The present invention provides a lighting device including an organic light emitting device made of an organic material, not a lighting device comprising an inorganic light emitting device made of an inorganic material. The organic light emitting device made of an organic light emitting material has relatively good green and red light emission efficiency compared to the inorganic light emitting device. In addition, the organic light emitting device has an advantage in that the color rendering property is improved and the light of the light emitting device is more similar to that of sunlight because the width of blue, red, and green emission peaks is relatively wider than that of the inorganic light emitting device.

In particular, the present invention provides a light-emitting device having an organic light-emitting device capable of easily driving the lighting device by having a touch sensor inside the lighting device and contacting the touch sensor.

1 is a plan view conceptually showing a structure of a lighting device 100 using an organic light emitting device according to a first embodiment of the present invention.

As shown in Figure 1, the lighting device 100 according to the first embodiment of the present invention is a surface-emitting lighting device, an illumination area (EA) for outputting light to the outside by emitting light when a signal is applied, and a user It consists of a touch area (TA) for driving the lighting device 100 by the touch of, and an index area (index) disposed around the touch area (TA) to display the location of the touch area (TA) to the user do.

The lighting area EA is formed over most areas of the lighting device 100. Although described later, an organic light emitting device having an organic light emitting layer is formed in the illumination area EA, and light is output as the organic light emitting layer emits light because a signal is applied from the outside. At this time, since the organic light emitting element is formed over the entire illumination area EA and the illumination area EA is formed over most areas of the lighting device, surface emission occurs through substantially the entire area of the lighting device 100. Is output.

The touch area TA is disposed in the upper left and right areas of the lighting device 100. A touch sensor is formed in the touch area TA to drive the organic light emitting device of the lighting area EA as a user's finger or a touch tool such as a stylus pen contacts the upper portion of the lighting device 100.

The touch sensor may be formed in an in-cell method built into the interior of the lighting device 100. This in-cell type touch sensor uses an electrode of the lighting device as a touch electrode for recognizing touch. However, in the lighting device, since the current is continuously applied to the anode and the cathode disposed on both sides of the organic light emitting layer during driving, that is, the current is continuously applied to the touch electrode, even when the touch is recognized, the amount of change of the capacitance is transmitted to the touch driving element. It is not possible to recognize the touch. For this reason, it is known that in a lighting device using an organic light emitting element, a body sensor cannot be formed in an in-cell manner.

Instead of such an in-cell method, an additional touch sensor is manufactured according to a position placed on a lighting device to add to the lighting device (Add-on), and an on-cell that directly forms a touch panel on the top surface of the lighting device The method is currently proposed as a touch sensor for lighting devices.

However, in the case of such an attachment type or on-cell type touch sensor, since a separate touch sensor must be manufactured and disposed on the front of the lighting device, there is a problem that the thickness and volume of the lighting device increase and the manufacturing cost increases.

The present invention provides a lighting device having an in-cell touch sensor by embedding a touch sensor inside the lighting device. In particular, in the present invention, when the illumination area EA and the touch area TA are separated by a predetermined distance, and the electrodes of the organic light emitting element are used as electrodes of the touch sensor, the electrodes are electrically disconnected to touch the touch sensor. It is possible to easily transfer the amount of change in capacitance to the touch driving element.

In the present invention, the capacitive touch sensor is mainly built in the touch area TA, and in particular, the capacitive and mutual capacitive touch sensors are embedded. However, the present invention is not limited to such a capacitive touch sensor.

The index area (index) is formed near the touch area TA to display the area of the touch area TA in the lighting device so that the user can easily grasp the position of the touch area TA in the lighting device 100. Enable. At this time, an organic light emitting device is disposed in the index area to output light, and the organic light emitting device of the index area is organic in the lighting area EA. It may be formed of the same structure as the light emitting element.

The organic light emitting device of the illumination area EA emits light when a driving signal is applied by a driving signal, that is, a touch recognition or a switch operation of the touch area TA, and when the driving signal is blocked again by a touch recognition or a switch operation While not emitting light, the organic light emitting device of the index area always emits light irrespective of touch recognition or switch operation to indicate the position of the touch area TA, so that the user can touch the area TA whenever necessary. So that you can locate

For example, when used as a lamp for a general building or as an indoor light for a car, a driving signal is always applied to the organic light emitting element of the index area to emit light for 24 hours to display the location of the touch area TA. . In addition, when used as an indoor lamp of a car, the driving signal is not applied to the organic light emitting device of the index area before starting the car, and is only applied to the organic light emitting device of the index area after the moment of starting. The driving signal may be applied so that the driver can easily grasp the position of the touch area TA after starting.

In addition, light emitted from the organic light emitting device of the index area (index) may be different from light emitted from the organic light emitting device of the illumination area EA. Since the lighting area EA is intended to illuminate the interior of the room or the vehicle, the light having a predetermined illuminance or higher should be emitted, whereas the index area simply indicates the location of the touch area TA, so that the lighting area EA It can be set to emit light having a lower illuminance than the illuminance. Further, white light is output from the illumination area EA, but light of a specific color may be output in the index area to attract the user's attention.

In the drawing, although the lighting area EA, the touch area TA, and the index area index are formed at specific positions of the lighting device 100, the lighting area EA, the touch area TA, and the index area index The lighting device 100 is not formed only at a specific position. Since the touch area TA is for driving the lighting device 100 by the user's touch, the touch area TA can be formed at any position where the user's touch is easy, and the index area is indexed according to the position of the touch area TA. It can be formed in various positions.

2 is a conceptual cross-sectional view of the lighting device 100 according to the first embodiment of the present invention.

As illustrated in FIG. 2, the lighting device 100 according to the first embodiment of the present invention includes an illumination area EA, an index area, and a touch area TA.

On the transparent substrate 110 such as glass or plastic, the lighting organic light emitting device 130 is disposed in the lighting area EA, the index organic light emitting device 140 is disposed in the index area, and the touch area TA is The touch sensor 150 is disposed.

The lighting organic light emitting device 130 is composed of a first electrode 132, a first organic light emitting layer 134 and a second electrode 136, the index organic light emitting device 140 and the third electrode 142 It is composed of a second organic light emitting layer 144 and a fourth electrode 146. Also, the touch sensor 150 includes a touch electrode 152.

The first electrode 132 of the lighting organic light emitting device 130, the third electrode 142 of the organic light emitting device 140 for index, and the touch electrode 152 of the touch sensor 150 may be made of the same conductive material. Or other conductive materials. For example, the first electrode 132 of the organic light emitting device 130 for illumination, the third electrode 142 of the organic light emitting device 140 for index, and the touch electrode 152 of the touch sensor 150 are all transparent. The first electrode 132 of the organic light-emitting device 130 for group lighting and the third electrode 142 of the organic light-emitting device 140 for index may be made of a conductive material, and a touch sensor 150 ), The touch electrode 152 may be made of a metal having good conductivity.

The first organic light-emitting layer 134 of the lighting organic light-emitting device 130 and the second organic light-emitting layer 144 of the organic light-emitting device 140 for the index may be made of the same organic light-emitting material or composed of different organic light-emitting materials. Can be. For example, the first organic light emitting layer 134 of the lighting organic light emitting device 130 may be composed of a white organic light emitting material to output white light, and is composed of a blue organic light emitting layer, a red organic light emitting layer, and a green organic light emitting layer to produce white light. You can also output In addition, the second organic light emitting layer 144 of the organic light emitting device 140 for index may output white light, and is composed of a blue organic light emitting layer, a red organic light emitting layer or a green organic light emitting layer and a single color organic light emitting layer or other specific color light It is composed of an organic light-emitting layer that outputs a light of a specific color.

The substrate 110 is coated with a sealing material 170 throughout, the organic light emitting device 130 for illumination of the illumination area EA, the organic light emitting device 140 for indexing of the index area, and the touch area TA The top and side surfaces of the touch electrode 152 are sealed to protect the organic light emitting devices 130 and 140 from external moisture or heat. In addition, a metal foil 180 is attached to the sealing material 170 to completely seal the lighting device 100 and protect the lighting device 100 from the external environment.

Meanwhile, in the touch area TA, the metal foil 180 forms a touch sensor 150 together with a touch electrode 152. That is, since the sealing material 170 is disposed between the metal foil 180 and the touch electrode 152 in the touch area TA, when the sensing voltage is applied from the touch driving element to the touch electrode 152, the metal foil An electrostatic capacitance is formed between 180 and the touch electrode 152. When a user's finger or a separate touch tool touches, a change occurs in the capacitance between the metal foil 180 and the touch electrode 152, and the lighting device 100 is detected by the touch driving element detecting the change in the capacitance. ) Can be recognized.

At this time, the metal foil 180 is grounded so that the touch sensor 150 may operate in a self-capacitance method, and both the metal foil 180 and the touch area TA are connected to a driving device for touch. As a result, the metal foil 180 and the touch area TA may be operated in a mutual capacitance method in which a touch signal is applied.

As described above, in the present invention, the touch sensor 150 is formed inside the lighting device 100 to provide the in-cell touch type lighting device 100. In addition, in the present invention, the user can easily recognize the touch area TA by forming an index area to display the position of the touch area TA by emitting light of illuminance and color set around the touch sensor 150. And you can touch

In particular, in the present invention, since the touch electrode 152 of the touch sensor 150 is formed in the same process by the same process as the first electrode 132 of the organic light emitting device 130 of the illumination area EA, the structure is simplified. And minimize the process to shorten the manufacturing time and reduce the manufacturing cost.

Hereinafter, the actual structure of the lighting device 100 according to the first embodiment of the present invention will be described in more detail.

3 is a plan view showing a specific structure of the lighting device 100 according to the first embodiment of the present invention.

As shown in FIG. 3, in the lighting device 100 according to the present invention, the first electrode 132 and the second electrode 136 are disposed over the entire surface of the lighting area of the substrate 110, and the first electrode The first organic light emitting layer 134 is disposed between the 132 and the second electrode 136 to form an organic light emitting device. In the lighting device 100 having such a structure, the first organic light emitting layer 134 emits light as signals are applied to the first electrode 132 and the second electrode 136 of the organic light emitting device, thereby outputting light over the entire lighting area. Is done.

The auxiliary electrode 131 is disposed in the matrix shape in the illumination area EA of the substrate 110. The auxiliary electrode 131 is made of a metal having good conductivity, so that a uniform voltage is applied to the first electrode 132 disposed in the entire area of the illumination area E of the substrate 110 so that the large-area lighting device 100 ) Enables uniform luminance.

The first organic light emitting layer 134 may be made of an organic light emitting material that outputs white light. For example, the first organic light emitting layer 134 may be composed of a blue organic light emitting layer, a red organic light emitting layer, or a green organic light emitting layer, or may be formed of a tandem structure including a blue light emitting layer and a yellow-green light emitting layer. . However, the first organic light emitting layer 134 of the present invention is not limited to the above structure, and various structures may be applied.

In addition, the first organic light emitting layer 134 of the present invention, an electron injection layer and a hole injection layer for injecting electrons and holes, respectively, and an electron transport layer and a hole transport layer for transporting the injected electrons and holes to the organic light emitting layer, and electrons and It may include a charge generating layer that generates a charge such as a hole.

The first pad 161 and the second pad 162 to which voltage is applied from the outside are disposed on one side of the substrate 110 and connected to the first electrode 132 and the second electrode 134, respectively. A driving signal is input from a driving element (not shown) of the first and is applied to the first electrode 132 and the second electrode 136. In this case, the first pad 161 and the second pad 162 may be formed only in one edge region of the substrate 110 or may be formed in both edge regions. In addition, a plurality of the first pad 161 and the second pad 162 may be provided and may be disposed in the edge region of the four sides of the first substrate 110.

Touch areas TA are formed on both sides of the first substrate 110, and touch electrodes 152 are formed on the touch areas TA. In addition, touch pads 163a and 163b to which touch signals are input from the outside are formed on one side of the substrate 110 by connecting the touch electrodes 152 on both sides.

In addition, an index area is disposed between the illumination area EA and the touch area TA, and a third electrode 142 and a fourth electrode 146 are formed over the entire index area. The second organic light emitting layer 144 is disposed between the third electrode 142 and the fourth electrode 146 to form an organic light emitting device for indexing. In the lighting device 100 having such a structure, the index region is indexed by the light emission of the second organic light emitting layer 144 as signals are applied to the third electrode 142 and the fourth electrode 146 of the index organic light emitting device. Is displayed to inform the user of the location of the touch area TA.

The second organic light emitting layer 144 may be composed of an organic light emitting material that outputs white light, but may also be composed of a blue organic light emitting layer, a red organic light emitting layer, or a green organic light emitting layer that emits a single color of blue light, red light, or green light. In addition, it may be composed of an organic light emitting layer that emits light of a specific color.

In addition, the second organic light emitting layer 144 of the present invention is also an electron injection layer and a hole injection layer for injecting electrons and holes, respectively, an electron transport layer and a hole transport layer for transporting the injected electrons and holes to the organic light emitting layer, and electrons and It may include a charge generating layer that generates a charge such as a hole.

The third pads 164a and 164b and the fourth pads 165a and 165b to which the index voltage is applied from the outside are connected to the third electrode 142 and the fourth electrode 146, respectively, on one side of the substrate 110. Is arranged, an index signal is input from an external index driving element (not shown) and applied to the third electrode 142 and the fourth electrode 146. In this case, the third pads 164a and 164b and the fourth pads 165a and 165b may be disposed in any one of four edge regions of the substrate 110 according to the position of the index region.

When the second organic light emitting layer 144 for index is made of an organic light emitting material that outputs white light, the second organic light emitting layer 144 may be formed of the same material as the first organic light emitting layer 134 for lighting. At this time, the index area (in accordance with the size of the index signal (index voltage) applied to the third electrode 142 and the fourth electrode 146 through the third pads 164a, 164b and the fourth pads 165a, 165b) index), by adjusting the illuminance of the light output from the illumination area EA, it is possible to display the position of the touch area TA by outputting light of a different illuminance from the light output from the illumination area EA.

Although not shown in the drawing, a flexible circuit board having a driving element mounted thereon is attached to one side of the substrate 110 on which the 1-4 pads 161, 162, 164a, 164b, 165a, 165 and the touch pads 163a, 163b are formed. Various signals (for example, a driving signal, a touch signal, and an index signal) from the driving element are induced through the 1-4 pads (161,162,164a, 164b, 165a, 165) and the touch pads (163a, 163b). It is applied to the light emitting device 130, the index organic light emitting device 140 and the touch sensor 150.

4 is a cross-sectional view taken along line I-I 'of FIG. 3, and the lighting device 100 according to the present invention will be described in more detail with reference to this.

In FIG. 2, the lighting device 100 is illustrated such that the surface outputting light is directed to the upper surface to clearly indicate the user's touch, but in FIG. 4, the surface outputting light is directed downward for convenience of explanation. The device 100 is shown.

As shown in FIG. 4, the lighting device 100 according to the present embodiment includes an illumination area EA, an index area, and a touch area TA, and is flexible and flexible such as plastic. The first electrode 132 is disposed in the illumination area EA on the substrate 110 made of a hard transparent material such as material or glass. The first electrode 132 may be formed of a transparent metal oxide such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).

Although not shown in the drawing, the first pad and the second pad are disposed in the edge region of the substrate 110. At this time, the first pad and the second pad may be formed of the same material by the same process as the first electrode 132.

An auxiliary electrode 131 is disposed in the illumination area EA on the substrate 110 to be electrically connected to the first electrode 132. Although the first electrode 132 is formed of a transparent conductive material and has the advantage of transmitting light emitted, there is a disadvantage that the electrical resistance is very high compared to the metal. Therefore, when manufacturing the large-area lighting device 100, the distribution of the current applied to the wide lighting area is uneven due to the large resistance of the transparent conductive material, and such uneven current distribution is the large-area lighting device 100. It is impossible to emit light of uniform luminance.

The auxiliary electrode 131 is disposed in a thin matrix shape, a mesh shape, a hexagonal shape, an octagonal shape, a circular shape, etc. over the entire illumination area EA of the substrate 110 to illuminate the illumination area of the substrate 110 (EA ) A uniform voltage is applied to the entire first electrode 132 to allow uniform luminance to be emitted from the large-area lighting device 100.

In the drawing, although the auxiliary electrode 131 is disposed under the first electrode 132, the auxiliary electrode 131 may be disposed over the first electrode 132. The auxiliary electrode 131 is made of a metal having good conductivity, such as Al, Au, Cu, Ti, W, Mo or alloys thereof. In the drawing, although the auxiliary electrode 131 has a single layer structure, it may be composed of two or more layers.

In addition, the auxiliary electrode 131 may be arranged in a matrix shape to divide the substrate 110 into a plurality of pixel units. That is, since the resistance of the auxiliary electrode 131 is very low compared to that of the first electrode 132, the voltage of the first electrode 132 is substantially directly applied to the first electrode 132 through the first pad. Instead, it is applied through the auxiliary electrode 131. Therefore, although the first electrode 132 is formed over the entire illumination area EA of the substrate 110, the first electrode 132 formed in the illumination area EA by the auxiliary electrode 131 is a plurality of. It is divided into pixels.

In the present invention, although the auxiliary electrode 131 may be formed to have a width of about 40-60 μm, the auxiliary electrode 131 is a type of metal used, an area of an illumination area EA of the lighting device 100, It may be determined by various factors such as the size of the pixels.

A protective layer 112 is stacked on the auxiliary electrode 131 of the illumination area EA of the substrate 110. The protective layer 112 is configured to cover the auxiliary electrode 131 and the first electrode 132 thereon. Since the auxiliary electrode 131 is made of an opaque metal, light is not output to the region where the auxiliary electrode 131 is formed. Accordingly, the protective layer 112 is provided only on the auxiliary electrode 131 and the protective layer 112 is not disposed in the actual light emitting area (ie, the pixel), so that light is emitted and output only in the light emitting area of the pixel. do.

In addition, since the protective layer 112 is formed to completely surround the auxiliary electrode 131, the step by the auxiliary electrode 131 is reduced, and thus various layers formed thereafter are stably formed without being disconnected by the step. Can be

The protective layer 112 is made of an inorganic layer such as SiOx or SiNx. However, the protective layer 112 may be composed of an organic layer such as photoacrylic, or may be composed of a plurality of layers of an inorganic layer and an organic layer.

The first organic light emitting layer 134 and the second electrode 136 are disposed on the first electrode 132 and the protective layer 112 of the illumination area EA.

The first organic light emitting layer 134 is a white organic light emitting layer, and may be formed of a red light emitting layer, a blue light emitting layer, or a green light emitting layer, or a tandem structure including a blue light emitting layer and a yellow-green light emitting layer. In addition, the first organic light emitting layer 134 is an electron injection layer and a hole injection layer to inject electrons and holes into the first organic light emitting layer, and an electron transport layer and a hole transport layer to transport the injected electrons and holes to the organic light emitting layer, respectively. , It may include a charge generating layer for generating charges such as electrons and holes.

The first organic light emitting layer 134 is a material that emits light in the visible light region by receiving and coupling holes and electrons, respectively, from the hole transport layer and the electron transport layer, and is preferably a material having good quantum efficiency for fluorescence or phosphorescence. Such organic materials include, for example, 8-hydroxy-quinoline aluminum complex (Alq3), carbazole-based compounds, dimerized styryl compounds, BAlq, 10-hydroxybenzo quinoline-metal compounds, benzoic compounds Compounds such as sazol and benzthiazole and benzimidazole-based compounds, poly (p-phenylenevinylene) (PPV), and the like may be used, but are not limited thereto.

Further, the second electrode 136 may be formed of a metal such as Ca, Ba, Mg, Al, Ag, or an alloy thereof. Although not illustrated in the drawing, a second pad connected to the second electrode 136 and applying a voltage to the second electrode 136 is provided on an upper portion of the outer region of the substrate 110.

The first electrode 132, the first organic light emitting layer 134, and the second electrode 136 constitute an organic light emitting device. At this time, when the first electrode 132 is an anode of the organic light emitting device and the second electrode 136 is a cathode, when voltage is applied to the first electrode 132 and the second electrode 136, Electrons are injected into the first organic light emitting layer 134 from the second electrode 132 and holes are injected into the first organic light emitting layer 134 from the first electrode 132, so that excitons ( exciton) is generated, and as the exciton decays, light corresponding to the energy difference between the LUMO (Lowest Unoccupied Molecular Orbital) and the HOMO (Highest Occupied Molecular Orbital) of the light emitting layer is generated, and thus the substrate in the downward direction ( 110) side).

Since the protective layer 112 is disposed on the auxiliary electrode 131, the first organic light emitting layer 134 above the auxiliary electrode 131 does not directly contact the first electrode 132, so that the auxiliary electrode 131 An organic light emitting device is not formed on the upper portion. In other words, the organic light emitting element in the illumination area EA is formed only on the pixels between the auxiliary electrodes 131 formed in a matrix, for example.

A third electrode 142, a second organic light emitting layer 144 for indexing, and a fourth electrode 146 are formed in the index area on the substrate 110. The third electrode 142 is an anode electrode and may be formed of a transparent metal oxide such as ITO or IZO. In this case, the third electrode 142 may be made of the same material as the first electrode 132 of the illumination area EA, or may be made of another material.

The second organic light emitting layer 144 may be a white organic light emitting layer composed of a red light emitting layer, a blue light emitting layer, a green light emitting layer, or a tandem structure including a blue light emitting layer and a yellow-green light emitting layer, and a red light emitting layer, a blue light emitting layer, green One of the light emitting layers may be a single color organic light emitting layer. In addition, the second organic light emitting layer 144 is an electron injection layer and a hole injection layer for injecting electrons and holes into the organic light emitting layer, and an electron transport layer and a hole transport layer, and electrons for transporting the injected electrons and holes to the organic light emitting layer, respectively And a charge generation layer that generates charges such as holes.

The second organic light emitting layer 144 is an 8-hydroxy-quinoline aluminum complex (Alq3), a carbazole-based compound, a dimerized styryl compound, a BAlq, a 10-hydroxybenzo quinoline-metal compound, and a benzox It may be formed of a compound of a series of sol and benzthiazole and benzimidazole, poly (p-phenylenevinylene) (PPV). At this time, the second organic light emitting layer 144 may be formed of the same organic material as the first organic light emitting layer 134 of the illumination area EA, but may also be formed of other organic materials.

The fourth electrode 146 is a cathode electrode, and may be formed of a metal such as Ca, Ba, Mg, Al, Ag or alloys thereof. At this time, the fourth electrode 146 may be formed of the same material as the second electrode layer 136 of the illumination area EA, but may also be formed of another material.

The edge signal of the substrate 110 is connected to the third electrode 142 and the fourth electrode 146 of the index area, respectively, so that the index signal is applied to the third electrode 142 and the fourth electrode 146. A third pad and a fourth pad for applying are disposed. At this time, the third pad and the fourth pad may be formed of the same material by the same process as the third electrode 142 and / or the fourth electrode 146.

A touch electrode 152 is formed on the touch area TA, and an insulating layer 153 is formed thereon. The touch electrode 152 may be made of a transparent metal oxide such as ITO or IZO, like the first electrode 132 of the organic light emitting device 130 in the illumination area EA, or an auxiliary electrode in the illumination area EA ( 131), such as Al, Au, Cu, Ti, W, Mo, or alloys thereof. Further, the touch electrode 152 may be formed of two layers of a metal layer and a transparent metal oxide.

The insulating layer 153 is made of an inorganic layer such as SiOx or SiNx. However, the insulating layer 153 may be composed of an organic layer such as photoacrylic, or may be composed of a plurality of layers of an inorganic layer and an organic layer. In particular, the insulating layer 153 may be formed of the same material by the same process as the protective layer 112 of the touch area TA or may be formed of a different material in different processes.

A sealing material (above) on the substrate 110 on which the organic light emitting device 130, the index organic light emitting device 140, and the touch sensor 150 are formed in the illumination area EA, the index area, and the touch area TA, respectively. 170) is applied and a metal foil 180 is attached thereon by an adhesive (not shown) or the like.

The sealing material 170 is applied to the illumination area EA, the index area, the touch area TA, and completely seals the organic light emitting device 130, the index organic light emitting device 140, and the touch sensor 150. By doing so, it is possible to prevent moisture or air from penetrating into the organic light emitting device 130, the index organic light emitting device 140, and the touch sensor 150 from outside. The sealing material 170 may be formed of a protective layer composed of an organic layer and / or an inorganic layer, and an encapsulant such as an epoxy compound, an acrylate compound or an acrylic compound.

Although not shown in the drawings, the adhesive may be a photocurable adhesive or a thermosetting adhesive.

The metal foil 180 is for preventing moisture or air from penetrating from the outside, and may be formed of a thin metal plate such as aluminum.

As described above, in the lighting device 100 according to the first embodiment of the present invention, since the lighting area EA and the touch area TA are formed inside the lighting device 100, the user simply lights the lighting device 100. ), That is, the lighting device 100 can be turned on and off by touching the touch area TA. In addition, an index area is formed around the touch area TA, and the index area index always illuminates light of a set illuminance and color to indicate the position of the touch area TA, so that the user touches it. By easily recognizing the position of the area TA, it is possible to easily perform the on / off operation of the lighting device 100.

On the other hand, in the above description, the organic light emitting device 130 of the illumination area EA and the organic light emitting device 140 of the index area (index) are formed in a specific structure, but the organic light emitting devices 130 and 140 of the present invention have such specific characteristics. It is not limited to the structure and can be formed in various structures.

5 is a view showing another configuration of the lighting device 100 according to the first embodiment of the present invention. Since the lighting device 100 of this structure is similar to the lighting device 100 of the structure shown in FIG. 4, the same structure will be briefly described and only different structures will be described.

As shown in FIG. 5, the lighting device 100 according to the present invention includes an illumination area EA, an index area and an touch area TA, and the illumination area EA and an index area index ) And the touch area TA, the organic light emitting device 130, the index organic light emitting device 140 and the touch sensor 150 are formed, respectively.

A first light extracting layer 114 is formed over the entire surface of the substrate 110. The first light extracting layer 114 is disposed at the interface between the substrate 110 and the external air layer, thereby reducing the reflection of light at the interface between the substrate 110 and the external air layer to emit light from the organic light emitting layers 134 and 144. Improve the extraction efficiency of light.

The first light extracting layer 114 may be configured in various forms. For example, the first light extracting layer 114 is composed of a plurality of layers, and the plurality of first light extracting layers 114 decreases toward the outer air layer from the substrate 110 so that the first light extracting layer ( 114) by reducing the angle of total reflected light at the interface between the outer air layer and the light efficiency.

In addition, the first light extraction layer 114, including light scattering particles, scatters light incident at the interface between the first light extraction layer 114 and the external air layer to reflect at the interface between the light extraction layer 114 and the external air layer. It becomes possible to minimize the light.

In addition, the first light extracting layer 114 is formed on the outer surface of the substrate 110 in the form of a projection to scatter light incident at the interface between the first light extracting layer 114 and the external air layer. 114) and it is possible to minimize the light reflected from the interface of the outer air layer.

Practically, the first light extracting layer 114 minimizes the reflection of light incident at the interface between the first light extracting layer 114 and the external air layer, so as to improve the light extraction effect, light extraction layers of all currently known structures This can be applied.

In addition, a second light extraction layer 116 may be formed over the entire surface of the substrate 110. In other words, between the first electrode 132 and the substrate 110 in the illumination area EA, between the third electrode 142 and the substrate 110 in the index area, and the touch electrode in the touch area TA A second light extraction layer 116 may be formed between 152 and the substrate 110, respectively.

Inside the second light extracting layer 116 includes light scattering particles such as nanoparticles to scatter light incident on the interface between the second light extracting layer 116 and the substrate 110, so that the second light extracting layer ( 116) and it is possible to minimize the light reflected from the interface between the outer air layer.

In addition, the second light extracting layer 116 is composed of protrusions such as a fine lens, and scattering the light incident on the interface between the second light extracting layer 116 and the substrate 110, so that the second light extracting layer 116 ) And the light reflected at the interface between the outer air layer can be minimized.

Practically, the second light extracting layer 116 minimizes the reflection of light incident at the interface between the second light extracting layer 116 and the substrate 110, so as to improve the light extraction effect, light of all currently known structures An extraction layer can be applied.

In the drawing, although the first light extracting layer 114 and the second light extracting layer 116 are formed over the entire lower and upper surfaces of the substrate 110, the first light extracting layer 114 and the second light extracting layer 116 may be formed on the lower surface and the upper surface of the substrate 110 of the illumination area EA and the index area. In addition, the first light extraction layer 114 and the second light extraction layer 116 formed in the illumination area EA and the index area index are integrally formed over the illumination area EA and the index area index. It may be or may be formed separately.

As described above, in the illumination device 100 of this structure, the first light extraction layer 114 and the second light extraction layer 116 are formed outside and inside the illumination area EA and the index area, respectively. By doing so, reflections generated at the interface inside and outside the lighting device 100 are minimized. Accordingly, the light extraction efficiency output from the organic light emitting layers 130 and 140 of the illumination area EA and the index area can be maximized, thereby minimizing power consumption.

On the other hand, in the drawing, the first light extracting layer 114 and the second light extracting layer 116 are formed outside and inside the lighting area EA and the index area, respectively, but the lighting area EA and the index area are formed. A light extracting layer may be formed only on one side of (index) outside and inside.

In addition, in the drawing, the first light extracting layer 114 and the second light extracting layer 116 are formed in the index area, but the first light extracting layer 114 and the second light are formed in the index area. The extraction layer 116 may not be formed. Since the index area (index) is not intended to illuminate the room, but to indicate the position of the touch area TA, it is not necessary to have high luminance like light output from the illumination area EA. Therefore, a desired function can be sufficiently exhibited without forming a separate light extracting light in the index area.

6 is a cross-sectional view showing a lighting device 200 according to a second embodiment of the present invention. At this time, although the reference numerals are different, the same configuration as the first embodiment will be briefly described, and only different configurations will be described in detail.

As illustrated in FIG. 6, an organic light emitting device 230 and an organic light emitting device 240 for an index are formed in the illumination area EA and the index area of the lighting device 200 according to the present embodiment, respectively. . The organic light emitting device 230 is composed of a first electrode 232, a first organic light emitting layer 234 and a second electrode 236 disposed on a substrate 210 made of a transparent material such as plastic or glass, and the The organic light emitting device 240 for index is composed of a third electrode 242, a second organic light emitting layer 244 and a fourth electrode 246 disposed on the substrate 210.

In addition, an auxiliary electrode 231 made of a highly conductive metal is arranged in a matrix shape in the illumination area EA to transmit a signal to the first electrode 232.

In this case, the first electrode 232 of the organic light emitting device 230 and the third electrode 242 of the organic light emitting device 240 for the index may be made of the same material, and the organic light emitting device 230 may be made of the same material. The first organic light emitting layer 234 and the second organic light emitting layer 244 of the index organic light emitting device 240 may be made of the same organic light emitting material. In addition, the second electrode 236 of the organic light emitting device 230 and the fourth electrode 246 of the organic light emitting device 240 for index may be made of the same material.

 In the illumination area (EA) and the index area (index), a sealing layer 270 comprising a protective layer composed of an organic layer and / or an inorganic layer, and a sealing agent such as an epoxy compound, an acrylate compound or an acrylic compound Is coated to seal the organic light emitting device 230 and the organic light emitting device 240 for indexing, so that air or moisture from outside penetrates into the organic light emitting device 230 and the organic light emitting device 240 for indexing. prevent.

In addition, a metal foil 280 made of aluminum or the like is attached to the outer surface of the sealing material 270.

The touch sensor 250 is disposed in the touch area TA. The touch sensor 250 is composed of a touch electrode 252 formed on the substrate 210 and an insulating layer 253 thereon, and a film made of a polymer such as PET (Polyethyleneterephtalate) on the top of the touch sensor 250 (282) is deployed. In this case, the touch electrode 252 may be formed of the same material as the auxiliary electrode 231 and the first electrode 232 in the illumination area EA, or may be composed of a double layer of a metal layer and a transparent conductive layer. .

In the lighting device 100 of the first embodiment shown in FIG. 4, the lighting area EA and the index area as well as the touch area TA are sealed by the sealing material 170 and surrounded by the metal foil 180. On the contrary, in the lighting device 100 of this embodiment, only the lighting area EA and the index area are sealed to the sealing material 170 and surrounded by the metal foil 180, and the metal foil is located at the touch area TA. 180) is not disposed, and a film 282 is disposed thereon.

As described above, in this embodiment, the metal foil 180 is not disposed in the touch area TA to improve the touch sensitivity, which will be described as follows.

In the first embodiment illustrated in FIG. 4, since the touch electrode 152 and the metal foil 180 are disposed with the insulating layer 153 and the sealing material 170 therebetween, the insulating layer 153 and the sealing material 170 are Due to the relatively thin thickness, the capacitance formed on the touch electrode 152 and the metal foil 180 is relatively large. Therefore, when the change in capacitance due to the touch is small, it is difficult to detect the touch.

On the other hand, in this embodiment, the gold foil 280 of the touch area TA is removed and the set area of an external system such as a building or a vehicle in which the lighting device 200 is installed is grounded, so that the touch electrode 252 is used. A touch is sensed by forming a capacitance between the external system and the grounded external system and detecting a change in capacitance due to the touch. The distance between the touch electrode 252 and the grounded external system is much larger than the distance between the touch electrode 152 and the metal foil 180 of the first embodiment. Therefore, since the size of the capacitance of the present embodiment is much smaller than that of the lighting device 100 of the first embodiment, the change in the minute capacitance due to touch is easily detected in this embodiment compared to the first embodiment. This enables sensitive touch detection.

7 is a cross-sectional view of a lighting device 300 according to a third embodiment of the present invention. At this time, although the reference numerals are different, the same configuration as the first embodiment will be briefly described, and only different configurations will be described in detail.

As shown in FIG. 7, the organic light emitting device 330 and the organic light emitting device for the index are respectively provided in the illumination area EA, the index area, and the touch area TA of the lighting device 300 according to this embodiment. 340 and the touch sensor 350 are formed.

The organic light emitting device 330 is composed of a first electrode 332, a first organic light emitting layer 334 and a second electrode 336 disposed on a substrate 310 made of a transparent material such as plastic or glass. The organic light emitting device for index 340 is composed of a third electrode 342, a second organic light emitting layer 344 and a fourth electrode 346 disposed on the substrate 310.

In addition, a matrix-shaped auxiliary electrode 331 is disposed below or above the first electrode 332 of the illumination area EA to transmit a signal to the first electrode 332.

The third electrode 342 of the index organic light emitting device 340 may be made of the same material as the first electrode 332 of the organic light emitting device 330, but may be made of different materials. For example, the first electrode 332 and the third electrode 342 may be made of a transparent metal oxide such as ITO or IZO.

The fourth electrode 346 of the index organic light emitting device 340 may be made of the same material as the second electrode 336 of the organic light emitting device 330, but may be made of different materials. For example, the second electrode 336 and the fourth electrode 346 may be made of a metal such as Ca, Ba, Mg, Al, Ag or alloys thereof.

The second organic light emitting layer 344 of the index organic light emitting device 340 may be made of the same material as the first organic light emitting layer 334 of the organic light emitting device 330 and may be made of a different material.

The touch sensor 350 is a mutual capacitive touch sensor 350, and is composed of a first touch electrode 352, an insulating layer 353, and a second touch electrode 356. Although not shown in the drawing, the first touch electrode 352 and the second touch electrode 356 are respectively connected to an external driving element through a touch pad, and a driving signal is applied and a sensing signal for sensing touch is driven. Device. The first touch electrode 352 and the second touch electrode 356 form an electrostatic capacitance with the insulating layer 353 interposed therebetween, and transmit a change in capacitance to the driving element by a touch, and the driving element is an electrostatic capacity. It detects the amount of change and senses the touch.

The first touch electrode 352 may be formed of the same material as the auxiliary electrode 331 or the first electrode 332 in the illumination area EA. Also, the first touch electrode 352 is the auxiliary electrode 331 ) And a two-layer structure of a metal layer made of the same material and a transparent conductive layer made of the same material as the first electrode 332.

The insulating layer 353 may be made of the same material as the protective layer 112 of the illumination area EA, or may be made of another material. For example, the insulating layer 353 may be composed of an inorganic layer, or may be composed of a plurality of layers of an inorganic layer and an organic layer.

The second touch electrode 356 may be made of the same material as the second electrode 336 of the organic light emitting device 330, but may be made of different materials. For example, the second electrode 336 and the fourth electrode 346 may be made of a metal such as Ca, Ba, Mg, Al, Ag or alloys thereof.

The lighting area EA, the index area (index), and the touch area TA are filled with a sealing material 370 and sealed by a metal foil 380 to complete the lighting device 300.

As described above, in the lighting device 300 of this embodiment, the touch sensor 350 is a mutual touch capacitive touch sensor 350 composed of a first touch electrode 352, an insulating layer 353, and a second touch electrode 356. ).

8A and 8B are plan views each showing a structure of a lighting device 400 according to a fourth embodiment of the present invention.

8A, an illumination area EA is formed over a substantially entire area of the substrate 410 and a rectangular touch area TA is formed in the upper left and right areas of the substrate 410 and an index area. (index) is disposed between the illumination area EA and the touch area TA.

At this time, in the drawing, it is formed on both sides of the upper edge of the rectangular touch area TA, but may be formed only on one edge of the substrate 410 of the rectangular touch area TA or on all of the squares. . In addition, the shape of the touch area TA may be formed in various shapes such as a square shape, a circular shape, an elliptical shape, a triangular shape, and a pentagonal shape, not a rectangular shape.

The index area (index) may be composed of a plurality of squares spaced apart along the periphery of the touch area TA. In the lighting device 100 having the structure shown in FIG. 1, the index area is formed in a band shape along the touch area TA, whereas in the lighting device 400 of this embodiment, the index area index is a plurality of. It is formed in a small square shape and outputs light such as a point light source along the periphery of the touch area TA, so that the touch area TA can be reliably notified to the user.

As shown in FIG. 8B, in the lighting device 400 of this structure, the touch area TA is formed long along both sides of the first substrate 410, and a plurality of index areas are formed to form the touch area TA. ). At this time, the index area (index) may be formed to be long in a band shape along the touch area TA. In addition, the touch area TA and the index area index may be formed along the left and right sides and the bottom side of the substrate 410.

As described above, in the lighting device 400 according to the present invention, the touch area TA is not limited to a specific shape or location, but may be formed at various locations in various shapes. In addition, the index area (index) can also be formed at various positions in various shapes as long as the location of the touch area TA can be clearly known to the user.

Hereinafter, a method of manufacturing a lighting device according to the present invention will be described in detail with reference to the accompanying drawings. At this time, although the manufacturing method of the lighting apparatus according to the first embodiment shown in FIGS. 3 and 4 is described, the lighting apparatus of another embodiment may be manufactured by substantially the same method.

9A to 9D and 10A to 10D are views showing a method of manufacturing the lighting device 100 according to the present invention, FIGS. 9A to 9D are plan views, and FIGS. 10A to 10D are cross-sectional views.

First, as shown in FIGS. 9A and 10A, Al, Au, Cu, Ti, W, Mo or alloys thereof on a transparent substrate 110 made of a material having ductility such as plastic or a hard material such as glass The metal is stacked and etched to form an auxiliary electrode 131 formed of a single layer or a plurality of layers in the illumination area EA and a touch electrode 152 in the touch area TA. In addition, a first pad 161 connected to the auxiliary electrode 131 and a touch pad 163 connected to the touch electrode 152 are formed in an outer region of the substrate 110.

The auxiliary electrode 131 is arranged in a horizontal and vertical matrix shape in a band shape set over the entire substrate 110, but the auxiliary electrode 131 is disposed in a mesh shape, a hexagonal shape, an octagonal shape, or a circular shape. It may be.

The auxiliary electrode 131 may be formed to have a width of about 45-55 μm, but is not limited to the width of a specific value of the auxiliary electrode 131, but the area of the lighting device, the size of the pixel, and the auxiliary electrode 131 It may be formed in various widths depending on the material of the.

Meanwhile, although not illustrated in the drawing, a light extraction layer may be formed on at least one surface of the lower surface and the upper surface of the substrate 110 to improve the extraction efficiency of light output to the outside.

Subsequently, a transparent metal oxide such as ITO or IZO is stacked and etched over the entire substrate 110 to form a first electrode 132 in the illumination area EA and a third electrode 142 in the index area. To form. In addition, although not shown in the drawings, a transparent conductive layer may be formed on the touch electrode 152.

Thereafter, an inorganic insulating material or an organic insulating material is stacked and etched over the entire substrate 110 to form a protective layer 112 on the first electrode 132 above the auxiliary electrode 131 of the illumination area EA, An insulating layer 153 is formed on the touch electrode 152 of the touch area TA. At this time, the protective layer 112 and the insulating layer 153 may be composed of a single layer of the inorganic insulating layer or the organic insulating layer, but may also be composed of a plurality of layers of the inorganic insulating layer and the organic insulating layer.

Subsequently, as shown in FIGS. 9B and 10B, an organic light emitting material is deposited on the substrate 110 to form a first organic light emitting layer 134 in the illumination area EA and a second organic light in the index area. The light emitting layer 144 is formed. At this time, the formation of the organic light emitting layers 134 and 144 may be formed by placing a mask on a mother substrate on which a plurality of lighting devices are formed and then depositing an organic light emitting material.

Subsequently, as illustrated in FIGS. 9C and 10C, a metal such as Ca, Ba, Mg, Al, Ag is deposited on the organic light emitting layers 134 and 144 and etched to etch the second electrode 136 in the illumination area EA. ) And the fourth electrode 146 in the index region. Further, second pads 162 electrically connected to the second electrode 136 and fourth pads 165a and 165b connected to the fourth electrode 146 are formed in the outer region of the substrate 110.

Although not illustrated in the drawing, a metal layer (ie, a second touch electrode) is formed on the insulating layer 153 of the touch area TA to form the touch sensor of the touch area TA in a mutual capacitive manner.

Subsequently, as shown in FIGS. 9D and 10D, an inorganic material and / or inorganic material is coated on the substrate 110 to form a sealing material 170 that seals components disposed on the substrate 110 and The lighting device 100 is completed by attaching the metal foil 180 with an adhesive.

As described above, in the present invention, the touch sensor is provided with the lighting device, so that the user can operate the lighting device by simply touching the lighting device. In particular, in the present invention, since the touch sensor is formed inside the lighting device in an in-cell manner, it is possible to prevent an increase in the thickness of the lighting device having a touch function.

Moreover, in the present invention, since the touch electrode of the touch sensor is formed by the same process as the electrode of the organic light emitting element in the illumination area, it is possible to simplify the manufacturing process and reduce manufacturing cost.

Various modifications of the present invention and structures that can be easily created based on the present invention should also be included in the scope of the present invention. Therefore, the scope of the present invention should not be determined by the detailed description described above, but should be determined by the appended claims.

100: lighting device 110: substrate
112: protective layer 131: auxiliary electrode
132,142: first electrode 134,144: organic light emitting layer
136,146: second electrode 152: touch electrode
161,162,163a, 163b, 164a, 164b, 165a, 165b: Pad

Claims (14)

Board;
An illumination region including a first organic light emitting element composed of a first electrode, a first organic light emitting layer and a second electrode formed on the substrate, and an auxiliary electrode connected to the first electrode to apply a signal to the first electrode; And
It is composed of a touch area including a first touch electrode formed on the substrate,
The first touch electrode is an illumination device made of the same material as at least one of the auxiliary electrode and the first electrode in the illumination area.
According to claim 1,
The lighting device further includes an index area disposed around the touch area to display the position of the touch area.
3. The lighting apparatus of claim 2, wherein the index area includes a second organic light emitting device composed of a third electrode, a second organic light emitting layer, and a third electrode.
According to claim 3,
The third electrode is made of the same material as the first electrode, the fourth electrode is made of the same material as the first electrode, and the second organic light emitting layer is a lighting device made of the same material as the first organic light emitting layer.
According to claim 2,
A sealing material sealing the lighting area, the index area, and the touch area; And
A lighting device further comprising a metal foil attached to the outside of the sealing material.
The method of claim 5,
The metal foil is grounded to form a first touch electrode and a capacitive touch sensor.
The method of claim 5,
The metal foil and the first touch electrode are connected to an external driving element to form a mutual capacitive touch sensor.
According to claim 2,
A sealing material sealing the lighting area and the index area;
A metal foil attached to the outside of the sealing material; And
A lighting device further comprising a film disposed on the first touch electrode of the touch area.
According to claim 1,
An insulating layer disposed on the first touch electrode of the touch area; And
A lighting device further comprising a second touch electrode disposed on the insulating layer.
According to claim 1,
The touch area is a lighting device formed on at least one of the four corners of the substrate.
According to claim 1,
The touch area is an illumination device formed on at least one of the four sides of the substrate.
According to claim 2,
The index area is a lighting device that outputs white light or monochromatic light.
According to claim 1,
The auxiliary electrode is a lighting device made of a matrix, mesh, octagonal, hexagonal or circular metal.
According to claim 1,
An illumination device further comprising a light extraction layer disposed on at least one side of both sides of the substrate to reduce reflection at the interface of the substrate.

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