KR102520936B1 - Display device using semiconductor light emitting device - Google Patents

Abstract

The present invention is to provide a display device that senses a touch using electrodes of a display panel and a method for controlling the same. The display device according to the present invention includes a plurality of scan electrodes arranged to be electrically connected to a scan line. a display unit including semiconductor light emitting elements of; During the display driving time for driving the display unit, a drive signal is sequentially applied to a first group of scan electrodes among the plurality of scan electrodes, and while a drive signal is sequentially applied to the first group of scan electrodes, the first A control unit sensing a touch input using a scan electrode group and a scan electrode spaced apart from a second group may be included.

Description

Display device using a semiconductor light emitting device {DISPLAY DEVICE USING SEMICONDUCTOR LIGHT EMITTING DEVICE}

The present invention relates to a display device, and more particularly, to a display device using a semiconductor light emitting device.

Recently, display devices having excellent characteristics such as thin film and flexible are being developed in the field of display technology. In contrast, currently commercialized major displays are represented by LCD (Liguid Crystal Display) and AMOLED (Active Matrix Organic Light Emitting Diodes). However, in the case of LCD, there are problems in that the response time is not fast and implementation of flexibility is difficult, and in the case of AMOLED, short lifespan, mass production yield is not good, and the degree of flexibility is weak.

On the other hand, Light Emitting Diode (LED) is a well-known semiconductor light emitting device that converts current into light. Starting with the commercialization of red LEDs using GaAsP compound semiconductors in 1962, information has been growing along with GaP:N series green LEDs. It has been used as a light source for display images in electronic devices including communication devices. Accordingly, a method for solving the above problem by implementing a flexible display using the semiconductor light emitting device may be proposed.

In addition, in these display devices, thin film display technology development has become an important part as slimming has been accelerated. In addition, the development of a touch screen that can be controlled using a finger or pen on the display screen is also an important part of the modern industry. On the other hand, general touch screen driving is driven by dividing the display driving time and the touch driving time. During the display driving time, the touch circuit is not driven because the display panel noise is induced to the touch sensor and there is a high probability of failure in recognizing the touch. Also, during the touch driving time, display driving is not performed to recognize the touch. However, in this case of time division, since the display does not emit light during the touch driving time, the light emission time within a unit frame decreases and the maximum luminance of the display decreases.

One object of the present invention is to provide a display device that senses a touch using an electrode of a display panel.

Another object of the present invention is to provide a display device capable of minimizing noise induced by electrodes for touch sensing.

A display device according to the present invention includes a display unit including a plurality of semiconductor light emitting elements arranged to be electrically connected to a scan line composed of a plurality of scan electrodes; During the display driving time for driving the display unit, a drive signal is sequentially applied to a first group of scan electrodes among the plurality of scan electrodes, and while a drive signal is sequentially applied to the first group of scan electrodes, the first A control unit sensing a touch input using a scan electrode group and a scan electrode spaced apart from a second group may be included.

In an embodiment according to the present invention, the control unit may sense the touch input based on a change in capacitance of the scan electrodes of the second group while sequentially applying a driving signal to the scan electrodes of the first group. there is.

In an embodiment according to the present invention, while sequentially applying a driving signal to the first group of scan electrodes, the control unit is located at a position spaced apart from the first group of scan electrodes by a predetermined distance. An area including two groups of scan electrodes may be set as a touch sensing area.

In an embodiment according to the present invention, the preset distance may be a separation distance that minimizes noise generated by sequentially applying a driving signal to the scan electrodes of the first group.

In an embodiment according to the present invention, a touch sensor unit disposed on the display unit and including a plurality of touch sensing areas may be further included.

In an embodiment according to the present invention, the touch sensor unit touches a first touch sensing area facing the scan electrode of the first group among the plurality of touch sensing areas during a display driving time for driving the display unit. input can be sensed.

In an embodiment according to the present invention, the control unit determines that the touch input is effective only when the touch input is sensed through the second group of scan electrodes and at the same time the touch input is sensed in the first touch sensing area. input can be determined.

In an embodiment according to the present invention, the control unit sets a first touch mode for sensing a touch using the touch sensor unit and a second touch mode for sensing a touch using a scan electrode of the display unit according to a user request to the display unit. can be displayed on

In an embodiment according to the present invention, the controller may periodically detect whether the touch sensor unit is fixed, and automatically select the second touch mode when the touch sensor unit is out of order.

A method for controlling a display device according to the present invention includes sequentially applying a drive signal to a first group of scan electrodes among the plurality of scan electrodes at a display driving time for driving the display device, and applying a driving signal to the first group of scan electrodes. While sequentially applying a driving signal, a touch input may be sensed using a scan electrode of the first group and a scan electrode of a second group spaced apart from each other.

In the display device according to the present invention, noise induced by electrodes for touch sensing can be minimized by sensing a touch input using electrodes of the display unit without a touch sensor unit.

In the display device according to the present invention, the thickness of the display device may be reduced by sensing a touch input using the scan electrode of the display unit without a touch sensor unit.

In the display device according to the present invention, touch accuracy may be improved by using not only the scan electrodes of the display unit but also the touch sensing region (touch sensor electrode array) of the touch sensor unit.

In an embodiment of the present invention, a user may sense a touch using the scan electrode of the display unit or the touch sensor unit according to a user's request.

In an embodiment of the present invention, when the touch sensor unit fails, a touch may be automatically sensed using the scan electrode of the display unit.

1 is a conceptual diagram illustrating an embodiment of a display device using a semiconductor light emitting device according to the present invention.
FIG. 2 is a partially enlarged view of part A of FIG. 1 , and FIGS. 3A and 3B are cross-sectional views taken along lines BB and CC of FIG. 2 .
FIG. 4 is a conceptual diagram illustrating the flip chip type semiconductor light emitting device of FIG. 3A.
5A to 5C are conceptual diagrams illustrating various forms of implementing color in relation to a flip chip type semiconductor light emitting device.
6 is cross-sectional views illustrating a method of manufacturing a display device using a semiconductor light emitting device of the present invention.
7 is a perspective view showing another embodiment of a display device using the semiconductor light emitting device of the present invention.
FIG. 8 is a cross-sectional view taken along line CC of FIG. 7 .
FIG. 9 is a conceptual diagram illustrating the vertical type semiconductor light emitting device of FIG. 8 .
10 and 11 are conceptual diagrams illustrating an example of a display device further provided with a touch sensor.
12 is a conceptual diagram for explaining a plurality of touch sensor areas in a display device according to the present invention.
13 and 14 are conceptual diagrams for explaining a touch sensor driving method in a display device according to the present invention.
15 to 18 are diagrams illustrating scan electrodes of a display unit according to the present invention.
19 is a diagram illustrating a scan electrode and a touch sensor unit of a display unit according to the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, it should be noted that the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and should not be construed as limiting the technical idea disclosed in this specification by the accompanying drawings.

It is also to be understood that when an element such as a layer, region or substrate is referred to as being “on” another element, it may be directly on the other element or intervening elements may exist therebetween. There will be.

The display devices described in this specification include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation devices, and slate PCs. , Tablet PC, Ultra Book, digital TV, desktop computer, etc. However, those skilled in the art will readily recognize that the configuration according to the embodiment described in this specification may be applied to a device capable of displaying even a new product type to be developed in the future.

1 is a conceptual diagram illustrating an embodiment of a display device using a semiconductor light emitting device according to the present invention.

According to the illustration, information processed by the controller of the display device 100 may be displayed using a flexible display.

The flexible display includes a display that can be bent, bent, twisted, folded, or rolled by an external force. For example, a flexible display may be a display manufactured on a thin and flexible substrate that can be bent, bent, folded, or rolled like paper while maintaining display characteristics of a conventional flat panel display.

In a state in which the flexible display is not bent (eg, a state in which the radius of curvature is infinite, hereinafter referred to as a first state), the display area of the flexible display is flat. In a state bent by an external force in the first state (eg, a state having a finite radius of curvature, hereinafter referred to as a second state), the display area may be a curved surface. As shown, information displayed in the second state may be visual information output on a curved surface. This visual information is implemented by independently controlling light emission of sub-pixels arranged in a matrix form. The unit pixel means a minimum unit for realizing one color formed by a combination of R (Red), G (Green), and B (Blue).

A unit pixel of the flexible display may be implemented by a semiconductor light emitting device. In the present invention, a light emitting diode (LED) is exemplified as a type of semiconductor light emitting device that converts current into light. The light emitting diode is formed in a small size, and through this, it can serve as a unit pixel even in the second state.

Hereinafter, a flexible display implemented using the light emitting diode will be described in more detail with reference to drawings.

FIG. 2 is a partially enlarged view of part A of FIG. 1 , FIGS. 3A to 3B are cross-sectional views taken along line B-B of FIG. 2 , FIG. 4 is a conceptual diagram illustrating the flip chip type semiconductor light emitting device of FIG. 3 , and FIG. 5A 5C are conceptual diagrams illustrating various forms of implementing colors in relation to a flip chip type semiconductor light emitting device.

Referring to FIGS. 2, 3A and 3B , the display device 100 using a semiconductor light emitting device of a passive matrix (PM) type is exemplified as the display device 100 using a semiconductor light emitting device. However, the example described below is also applicable to an active matrix (AM) type semiconductor light emitting device.

The display device 100 includes a substrate 110, a first electrode 120, a conductive adhesive layer 130, a second electrode 140, and a plurality of semiconductor light emitting devices 150.

The substrate 110 may be a flexible substrate. For example, in order to implement a flexible display device, the substrate 110 may include glass or polyimide (PI). In addition, as long as it is an insulating and flexible material, for example, PEN (Polyethylene Naphthalate), PET (Polyethylene Terephthalate), etc. may be used. In addition, the substrate 110 may be any transparent material or opaque material.

The substrate 110 may be a wiring board on which the first electrode 120 is disposed, and thus the first electrode 120 may be positioned on the substrate 110 .

According to the illustration, the insulating layer 160 may be disposed on the substrate 110 on which the first electrode 120 is located, and the auxiliary electrode 170 may be located on the insulating layer 160 . In this case, a state in which the insulating layer 160 is stacked on the substrate 110 may become one wiring substrate. More specifically, the insulating layer 160 is made of an insulating and flexible material such as polyimide (PI, Polyimide), PET, PEN, etc., and may be integrally formed with the substrate 110 to form a single substrate.

The auxiliary electrode 170 is an electrode that electrically connects the first electrode 120 and the semiconductor light emitting device 150, and is located on the insulating layer 160 and is disposed corresponding to the position of the first electrode 120. For example, the auxiliary electrode 170 has a dot shape and may be electrically connected to the first electrode 120 through an electrode hole 171 penetrating the insulating layer 160 . The electrode hole 171 may be formed by filling the via hole with a conductive material.

Referring to the drawings, a conductive adhesive layer 130 is formed on one surface of the insulating layer 160, but the present invention is not necessarily limited thereto. For example, a layer performing a specific function is formed between the insulating layer 160 and the conductive adhesive layer 130, or the conductive adhesive layer 130 is disposed on the substrate 110 without the insulating layer 160. It is also possible. In a structure in which the conductive adhesive layer 130 is disposed on the substrate 110, the conductive adhesive layer 130 may serve as an insulating layer.

The conductive adhesive layer 130 may be a layer having adhesiveness and conductivity, and for this purpose, a material having conductivity and a material having adhesiveness may be mixed in the conductive adhesive layer 130 . In addition, the conductive adhesive layer 130 has ductility, and through this, a flexible function is possible in the display device.

As an example, the conductive adhesive layer 130 may be an anisotropic conductive film (ACF), an anisotropic conductive paste, a solution containing conductive particles, or the like. The conductive adhesive layer 130 may be configured as a layer that allows electrical interconnection in the Z direction penetrating the thickness but has electrical insulation properties in the horizontal X-Y direction. Accordingly, the conductive adhesive layer 130 may be referred to as a Z-axis conductive layer (however, it will be referred to as a 'conductive adhesive layer' hereinafter).

The anisotropic conductive film is a film in which an anisotropic conductive medium is mixed with an insulating base member, and when heat and pressure are applied, only a specific portion becomes conductive by the anisotropic conductive medium. Hereinafter, it will be described that heat and pressure are applied to the anisotropic conductive film, but other methods are also possible for the anisotropic conductive film to partially have conductivity. This method may be, for example, applying only one of the heat and pressure or UV curing.

Also, the anisotropic conductive medium may be, for example, conductive balls or conductive particles. According to the illustration, in this example, the anisotropic conductive film is a film in which conductive balls are mixed with an insulating base member, and when heat and pressure are applied, only a specific portion has conductivity by the conductive balls. The anisotropic conductive film may be in a state in which a core of a conductive material contains a plurality of particles covered by an insulating film made of polymer, and in this case, the portion to which heat and pressure are applied becomes conductive by the core as the insulating film is destroyed. . At this time, the shape of the core is deformed to form layers that contact each other in the thickness direction of the film. As a more specific example, heat and pressure are applied to the anisotropic conductive film as a whole, and electrical connection in the Z-axis direction is partially formed due to a difference in height between the counterparts adhered by the anisotropic conductive film.

As another example, the anisotropic conductive film may be in a state in which a plurality of particles coated with a conductive material are contained in an insulating core. In this case, the portion to which heat and pressure are applied deforms (presses) the conductive material and becomes conductive in the thickness direction of the film. As another example, a form in which the conductive material passes through the insulating base member in the Z-axis direction to have conductivity in the thickness direction of the film is also possible. In this case, the conductive material may have sharp ends.

According to the drawing, the anisotropic conductive film may be a fixed array anisotropic conductive film configured in a form in which conductive balls are inserted into one surface of an insulating base member (fixed array ACF). More specifically, the insulating base member is formed of a material having adhesive properties, and the conductive balls are intensively disposed on the bottom portion of the insulating base member, and when heat and pressure are applied from the base member, the conductive balls are deformed together. conduction in the vertical direction.

However, the present invention is not necessarily limited to this, and the anisotropic conductive film has a form in which conductive balls are randomly mixed in an insulating base member, or a form in which conductive balls are disposed on any one layer composed of a plurality of layers (double- ACF), etc. are all possible.

The anisotropic conductive paste is a combination of paste and conductive balls, and may be a paste in which conductive balls are mixed with an insulating and adhesive base material. In addition, the solution containing conductive particles may be a solution containing conductive particles or nano particles.

Referring back to the drawing, the second electrode 140 is spaced apart from the auxiliary electrode 170 and positioned on the insulating layer 160 . That is, the conductive adhesive layer 130 is disposed on the insulating layer 160 where the auxiliary electrode 170 and the second electrode 140 are located.

After forming the conductive adhesive layer 130 with the auxiliary electrode 170 and the second electrode 140 positioned on the insulating layer 160, the semiconductor light emitting device 150 is connected in a flip chip form by applying heat and pressure. , the semiconductor light emitting device 150 is electrically connected to the first electrode 120 and the second electrode 140 .

Referring to FIG. 4 , the semiconductor light emitting device may be a flip chip type light emitting device.

For example, the semiconductor light emitting device includes a p-type electrode 156, a p-type semiconductor layer 155 on which the p-type electrode 156 is formed, an active layer 154 formed on the p-type semiconductor layer 155, and an active layer ( 154), an n-type semiconductor layer 153 formed on the n-type semiconductor layer 153, and an n-type electrode 152 spaced apart from the p-type electrode 156 in a horizontal direction. In this case, the p-type electrode 156 may be electrically connected to the auxiliary electrode 170 through the conductive adhesive layer 130, and the n-type electrode 152 may be electrically connected to the second electrode 140.

Referring back to FIGS. 2 , 3A and 3B , the auxiliary electrode 170 may be formed long in one direction, so that one auxiliary electrode may be electrically connected to the plurality of semiconductor light emitting devices 150 . For example, p-type electrodes of left and right semiconductor light emitting elements centered on the auxiliary electrode may be electrically connected to one auxiliary electrode.

More specifically, the semiconductor light emitting device 150 is press-fitted into the conductive adhesive layer 130 by heat and pressure, and through this, a gap between the p-type electrode 156 and the auxiliary electrode 170 of the semiconductor light emitting device 150 is formed. Only the portion and the portion between the n-type electrode 152 and the second electrode 140 of the semiconductor light emitting device 150 have conductivity, and the other portion does not have conductivity because the semiconductor light emitting device is not press-fitted. In this way, the conductive adhesive layer 130 not only mutually couples the semiconductor light emitting device 150 and the auxiliary electrode 170 and between the semiconductor light emitting device 150 and the second electrode 140, but also forms an electrical connection.

In addition, the plurality of semiconductor light emitting devices 150 constitutes a light emitting device array, and a phosphor layer 180 is formed in the light emitting device array.

The light emitting device array may include a plurality of semiconductor light emitting devices having different luminance values. Each semiconductor light emitting device 150 is combined (or grouped) to form a unit pixel, and is electrically connected to the first electrode 120 . For example, the number of first electrodes 120 may be plural, the semiconductor light emitting elements may be arranged in several rows, and the semiconductor light emitting elements of each row may be electrically connected to one of the plurality of first electrodes.

In addition, since the semiconductor light emitting elements are connected in a flip chip form, semiconductor light emitting elements grown on a transparent dielectric substrate can be used. Also, the semiconductor light emitting devices may be, for example, nitride semiconductor light emitting devices. Since the semiconductor light emitting device 150 has excellent luminance, individual unit pixels can be configured even with a small size.

According to the drawing, barrier ribs 190 may be formed between the semiconductor light emitting devices 150 . In this case, the barrier rib 190 may serve to separate the semiconductor light emitting elements from each other and may be integrally formed with the conductive adhesive layer 130 . For example, by inserting the semiconductor light emitting device 150 into the anisotropic conductive film, the base member of the anisotropic conductive film may form the barrier rib.

In addition, if the base member of the anisotropic conductive film is black, the barrier rib 190 may have reflective properties and increase contrast even without a separate black insulator.

As another example, a reflective barrier rib may be separately provided as the barrier rib 190 . In this case, the barrier rib 190 may include a black or white insulator according to the purpose of the display device. When the barrier rib of the white insulator is used, reflectivity may be increased, and when the barrier rib of the black insulator is used, the contrast ratio may be increased while having a reflective characteristic.

The phosphor layer 180 may be positioned on an outer surface of the semiconductor light emitting device 150 . For example, the semiconductor light emitting device 150 is a blue semiconductor light emitting device that generates blue (B) light, and the phosphor layer 180 performs a function of converting the blue (B) light into a color of a unit pixel. The phosphor layer 180 may be a red phosphor 181 or a green phosphor 182 constituting individual pixels.

That is, a red phosphor 181 capable of converting blue light into red (R) light may be stacked on the blue semiconductor light emitting element 151 at a position forming a red unit pixel, and a position forming a green unit pixel. In , a green phosphor 182 capable of converting blue light into green (G) light may be stacked on the blue semiconductor light emitting device 151 . In addition, only the blue semiconductor light emitting element 151 may be used alone in a portion constituting a blue unit pixel. In this case, red (R), green (G), and blue (B) unit pixels may form one pixel. More specifically, phosphors of one color may be stacked along each line of the first electrode 120 . Accordingly, one line in the first electrode 120 may be an electrode for controlling one color. That is, red (R), green (G), and blue (B) colors may be sequentially disposed along the second electrode 140, and through this, a unit pixel may be implemented.

However, the present invention is not necessarily limited to this, and a unit pixel emitting red (R), green (G), and blue (B) light by combining the semiconductor light emitting device 150 and the quantum dot (QD) instead of a phosphor can be implemented

In addition, a black matrix 191 may be disposed between each phosphor layer to improve contrast. That is, the black matrix 191 can improve the contrast between light and dark.

However, the present invention is not necessarily limited thereto, and other structures for realizing blue, red, and green may be applied.

Referring to FIG. 5A , each semiconductor light emitting device 150 is mainly made of gallium nitride (GaN), and indium (In) and/or aluminum (Al) are added together to emit high-output light emitting various lights including blue. It can be implemented as an element.

In this case, the semiconductor light emitting device 150 may be a red, green, and blue semiconductor light emitting device to form a sub-pixel, respectively. For example, red, green, and blue semiconductor light emitting devices R, G, and B are alternately disposed, and red, green, and blue unit pixels are provided by the red, green, and blue semiconductor light emitting devices. These form one pixel, and through this, a full color display can be implemented.

Referring to FIG. 5B , the semiconductor light emitting device may include a white light emitting device W including a yellow phosphor layer for each device. In this case, in order to form a unit pixel, a red phosphor layer 181, a green phosphor layer 182, and a blue phosphor layer 183 may be provided on the white light emitting device W. In addition, a unit pixel may be formed by using a color filter in which red, green, and blue colors are repeated on the white light emitting element W.

Referring to FIG. 5C , a structure in which a red phosphor layer 181, a green phosphor layer 182, and a blue phosphor layer 183 are provided on the ultraviolet light emitting device UV is also possible. In this way, the semiconductor light emitting device can be used in the entire range of visible light as well as ultraviolet (UV), and can be expanded to a semiconductor light emitting device in which ultraviolet (UV) can be used as an excitation source of an upper phosphor. .

Looking again at this example, the semiconductor light emitting device 150 is positioned on the conductive adhesive layer 130 to constitute a unit pixel in the display device. Since the semiconductor light emitting device 150 has excellent luminance, individual unit pixels can be configured even with a small size. Each semiconductor light emitting device 150 may have a side length of 80 μm or less, and may be a rectangular or square device. In the case of a rectangle, it may be 20 X 80 μm or less in size.

In addition, even when a square semiconductor light emitting device 150 having a side length of 10 μm is used as a unit pixel, sufficient brightness is obtained to form a display device. Therefore, in the case where the size of a unit pixel is a rectangular pixel having one side of 600 μm and the other side of 300 μm, for example, the distance between the semiconductor light emitting devices is relatively large. Accordingly, in this case, it is possible to implement a flexible display device having HD quality.

The display device using the semiconductor light emitting device described above can be manufactured by a new type of manufacturing method. Hereinafter, the manufacturing method will be described with reference to FIG. 6 .

6 is cross-sectional views illustrating a method of manufacturing a display device using a semiconductor light emitting device of the present invention.

Referring to this figure, first, a conductive adhesive layer 130 is formed on the insulating layer 160 where the auxiliary electrode 170 and the second electrode 140 are positioned. The insulating layer 160 is stacked on the first substrate 110 to form one substrate (or wiring board), and the first electrode 120, the auxiliary electrode 170 and the second electrode 140 are formed on the wiring board. this is placed In this case, the first electrode 120 and the second electrode 140 may be disposed in directions orthogonal to each other. In addition, in order to implement a flexible display device, each of the first substrate 110 and the insulating layer 160 may include glass or polyimide (PI).

The conductive adhesive layer 130 may be implemented by, for example, an anisotropic conductive film, and for this purpose, the anisotropic conductive film may be applied to the substrate on which the insulating layer 160 is positioned.

Next, the second substrate 112 on which the plurality of semiconductor light emitting devices 150 corresponding to the positions of the auxiliary electrode 170 and the second electrode 140 and constituting individual pixels is located is disposed on the semiconductor light emitting device 150. ) is disposed to face the auxiliary electrode 170 and the second electrode 140.

In this case, the second substrate 112 is a growth substrate on which the semiconductor light emitting device 150 is grown, and may be a sapphire substrate or a silicon substrate.

When the semiconductor light emitting device is formed in a wafer unit, it can be effectively used in a display device by having a gap and a size that can achieve a display device.

Then, the wiring substrate and the second substrate 112 are thermally compressed. For example, the wiring board and the second board 112 may be thermally compressed by applying an ACF press head. The wiring substrate and the second substrate 112 are bonded by the thermal compression bonding. Due to the characteristics of the anisotropic conductive film having conductivity by thermal compression, only the portion between the semiconductor light emitting device 150, the auxiliary electrode 170, and the second electrode 140 has conductivity, and through this, the electrodes and semiconductor light emitting Element 150 may be electrically connected. At this time, the semiconductor light emitting device 150 is inserted into the anisotropic conductive film, through which a barrier rib may be formed between the semiconductor light emitting devices 150 .

Then, the second substrate 112 is removed. For example, the second substrate 112 may be removed using a laser lift-off (LLO) or chemical lift-off (CLO) method.

Finally, the second substrate 112 is removed to expose the semiconductor light emitting devices 150 to the outside. If necessary, a transparent insulating layer (not shown) may be formed by coating silicon oxide (SiOx) or the like on the wiring substrate to which the semiconductor light emitting device 150 is bonded.

In addition, a step of forming a phosphor layer on one surface of the semiconductor light emitting device 150 may be further included. For example, the semiconductor light emitting device 150 is a blue semiconductor light emitting device that generates blue (B) light, and a red or green phosphor for converting the blue (B) light into a color of a unit pixel is the blue semiconductor light emitting device. A layer may be formed on one side of the device.

The manufacturing method or structure of the display device using the semiconductor light emitting device described above may be modified in various forms. As an example, a vertical type semiconductor light emitting device may also be applied to the display device described above. Hereinafter, a vertical structure will be described with reference to FIGS. 5 and 6 .

In addition, in the modified examples or embodiments described below, the same or similar reference numerals are assigned to components identical or similar to those in the previous example, and the description is replaced with the first description.

7 is a perspective view showing another embodiment of a display device using the semiconductor light emitting device of the present invention, FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7, and FIG. 9 shows the vertical semiconductor light emitting device of FIG. it is a concept

Referring to the drawings, a display device may be a display device using a passive matrix (PM) type vertical semiconductor light emitting device.

The display device includes a substrate 210, a first electrode 220, a conductive adhesive layer 230, a second electrode 240, and a plurality of semiconductor light emitting devices 250.

The substrate 210 is a wiring board on which the first electrode 220 is disposed, and may include polyimide (PI) to implement a flexible display device. In addition, any insulating and flexible material may be used.

The first electrode 220 is positioned on the substrate 210 and may be formed as a bar-shaped electrode that is long in one direction. The first electrode 220 may serve as a data electrode.

The conductive adhesive layer 230 is formed on the substrate 210 where the first electrode 220 is located. Like a display device to which a flip chip type light emitting element is applied, the conductive adhesive layer 230 includes an anisotropic conductive film (ACF), an anisotropic conductive paste, and a solution containing conductive particles. ) and so on. However, in this embodiment, a case in which the conductive adhesive layer 230 is implemented by an anisotropic conductive film is exemplified.

After the anisotropic conductive film is placed on the substrate 210 in a state where the first electrode 220 is located, when the semiconductor light emitting device 250 is connected by applying heat and pressure, the semiconductor light emitting device 250 first It is electrically connected to the electrode 220. In this case, the semiconductor light emitting device 250 may be disposed on the first electrode 220 .

As described above, the electrical connection is generated because the anisotropic conductive film partially has conductivity in the thickness direction when heat and pressure are applied. Accordingly, the anisotropic conductive film is divided into a conductive portion 231 and a non-conductive portion 232 in the thickness direction.

In addition, since the anisotropic conductive film contains an adhesive component, the conductive adhesive layer 230 implements mechanical coupling as well as electrical connection between the semiconductor light emitting device 250 and the first electrode 220 .

As such, the semiconductor light emitting device 250 is positioned on the conductive adhesive layer 230, and constitutes an individual pixel in the display device through this. Since the semiconductor light emitting device 250 has excellent luminance, individual unit pixels can be configured even with a small size. Each semiconductor light emitting device 250 may have a side length of 80 μm or less, and may be a rectangular or square device. In the case of a rectangle, it may be 20 X 80 μm or less in size.

The semiconductor light emitting device 250 may have a vertical structure.

Between the vertical semiconductor light emitting devices, a plurality of second electrodes 240 disposed in a direction crossing the longitudinal direction of the first electrode 220 and electrically connected to the vertical semiconductor light emitting device 250 are positioned.

Referring to FIG. 9 , the vertical semiconductor light emitting device includes a p-type electrode 256, a p-type semiconductor layer 255 formed on the p-type electrode 256, and an active layer 254 formed on the p-type semiconductor layer 255. ), an n-type semiconductor layer 253 formed on the active layer 254, and an n-type electrode 252 formed on the n-type semiconductor layer 253. In this case, the p-type electrode 256 located at the bottom may be electrically connected to the first electrode 220 by the conductive adhesive layer 230, and the n-type electrode 252 located at the top may be electrically connected to the second electrode 240, which will be described later. ) and electrically connected. The vertical type semiconductor light emitting device 250 has a great advantage in that the chip size can be reduced because the electrodes can be arranged vertically.

Referring back to FIG. 8 , a phosphor layer 280 may be formed on one surface of the semiconductor light emitting device 250 . For example, the semiconductor light emitting device 250 is a blue semiconductor light emitting device 251 that generates blue (B) light, and includes a phosphor layer 280 for converting the blue (B) light into a color of a unit pixel. It can be. In this case, the phosphor layer 280 may include a red phosphor 281 and a green phosphor 282 constituting individual pixels.

That is, a red phosphor 281 capable of converting blue light into red (R) light may be stacked on the blue semiconductor light emitting element 251 at a position forming a red unit pixel, and a position forming a green unit pixel. In , a green phosphor 282 capable of converting blue light into green (G) light may be stacked on the blue semiconductor light emitting device 251 . In addition, only the blue semiconductor light emitting element 251 may be used alone in a portion constituting a blue unit pixel. In this case, red (R), green (G), and blue (B) unit pixels may form one pixel.

However, the present invention is not necessarily limited thereto, and as described above in a display device to which a flip chip type light emitting element is applied, other structures for realizing blue, red, and green may be applied.

Referring again to this embodiment, the second electrode 240 is positioned between the semiconductor light emitting devices 250 and electrically connected to the semiconductor light emitting devices 250 . For example, the semiconductor light emitting devices 250 may be arranged in a plurality of columns, and the second electrode 240 may be positioned between the columns of the semiconductor light emitting devices 250 .

Since the distance between the semiconductor light emitting devices 250 forming individual pixels is sufficiently large, the second electrode 240 may be positioned between the semiconductor light emitting devices 250 .

The second electrode 240 may be formed as an electrode in the form of a bar long in one direction, and may be disposed in a direction perpendicular to the first electrode.

In addition, the second electrode 240 and the semiconductor light emitting device 250 may be electrically connected by a connection electrode protruding from the second electrode 240 . More specifically, the connection electrode may be an n-type electrode of the semiconductor light emitting device 250 . For example, the n-type electrode is formed as an ohmic electrode for ohmic contact, and the second electrode covers at least a portion of the ohmic electrode by printing or deposition. Through this, the second electrode 240 and the n-type electrode of the semiconductor light emitting device 250 may be electrically connected.

According to the drawing, the second electrode 240 may be positioned on the conductive adhesive layer 230 . In some cases, a transparent insulating layer (not shown) including silicon oxide (SiOx) or the like may be formed on the substrate 210 on which the semiconductor light emitting device 250 is formed. When the second electrode 240 is positioned after the transparent insulating layer is formed, the second electrode 240 is positioned on the transparent insulating layer. Also, the second electrode 240 may be formed to be spaced apart from the conductive adhesive layer 230 or the transparent insulating layer.

If a transparent electrode such as ITO (Indium Tin Oxide) is used to position the second electrode 240 on the semiconductor light emitting device 250, the ITO material has a problem of poor adhesion to the n-type semiconductor layer. there is. Accordingly, the present invention has the advantage of not having to use a transparent electrode such as ITO by placing the second electrode 240 between the semiconductor light emitting devices 250 . Accordingly, the light extraction efficiency can be improved by using a conductive material having good adhesion to the n-type semiconductor layer as a horizontal electrode without being restricted in selecting a transparent material.

According to the drawing, barrier ribs 290 may be positioned between the semiconductor light emitting devices 250 . That is, barrier ribs 290 may be disposed between the vertical semiconductor light emitting devices 250 to isolate the semiconductor light emitting devices 250 constituting individual pixels. In this case, the barrier rib 290 may serve to separate individual unit pixels from each other, and may be integrally formed with the conductive adhesive layer 230 . For example, by inserting the semiconductor light emitting device 250 into the anisotropic conductive film, the base member of the anisotropic conductive film may form the barrier rib.

In addition, when the base member of the anisotropic conductive film is black, the barrier rib 290 may have reflective characteristics and increase contrast even without a separate black insulator.

As another example, a reflective barrier rib may be separately provided as the barrier rib 190 . The barrier rib 290 may include a black or white insulator according to the purpose of the display device.

If the second electrode 240 is directly positioned on the conductive adhesive layer 230 between the semiconductor light emitting devices 250, the barrier rib 290 is formed between the vertical semiconductor light emitting device 250 and the second electrode 240. can be placed in between. Therefore, by using the semiconductor light emitting device 250, individual unit pixels can be formed even with a small size, and the distance between the semiconductor light emitting devices 250 is relatively large enough to allow the second electrode 240 to be connected to the semiconductor light emitting device 250. ), and there is an effect of realizing a flexible display device having HD quality.

Also, according to the drawing, a black matrix 291 may be disposed between each phosphor to improve contrast. That is, the black matrix 291 can improve contrast between light and dark.

As described above, the semiconductor light emitting device 250 is positioned on the conductive adhesive layer 230 and constitutes an individual pixel in the display device through this. Since the semiconductor light emitting device 250 has excellent luminance, individual unit pixels can be configured even with a small size. Accordingly, a full color display in which red (R), green (G), and blue (B) semiconductor light emitting devices constitute unit pixels (or pixels) can be realized by the semiconductor light emitting device.

Meanwhile, as described above, the display device may further include a touch sensor for detecting a touch operation applied to the display device.

A display device with a touch sensor includes a display unit (or display module) and a touch sensor unit, and may be used as an input device in addition to an output device.

The touch sensor can sense a touch on the display device using at least one of various touch methods such as a resistive method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method.

Hereinafter, the structure of a display device equipped with a touch sensor for sensing a touch in a capacitive manner will be described in more detail. However, the touch sensor structure of the present invention is not limited to the capacitive type. For example, a magnetic field method in which a touch sensor includes one magnetic field coil may be applied.

A touch sensor that detects a touch in a capacitive manner may be configured to convert a change in pressure applied to a specific part or capacitance generated in a specific part of a display module into an electrical input signal. When there is a touch input to the touch sensor, the corresponding signal(s) may be processed by the control unit of the display device, and the processed signals may be converted into data corresponding thereto. Hereinafter, a display device equipped with such a capacitive type will be described in more detail along with accompanying drawings. 10 and 11 are conceptual diagrams illustrating an example of a display device further provided with a touch sensor.

First, according to the illustration of FIG. 10 , information processed by the controller of the display apparatus 1000 may be displayed using a flexible display. A description of the flexible display will be replaced with the description of FIG. 1 .

As shown, the display device 1000 made of a flexible display may include a touch sensor. For example, as shown in (a) of FIG. 10 , when a touch input is applied to the display apparatus 1000, the controller (not shown) processes the touch input and produces a corresponding touch input. control can be performed. For example, in FIG. 10(a), when a touch input is applied to an arbitrary icon 1001, the controller processes the touch input as shown in FIG. Information may be output to the display device 1000 . In this case, a touch input may be applied while the flexible display is bent, and the touch sensor detects the touch input applied in this state.

Meanwhile, a unit pixel of the display device 1000 made of a flexible display may be implemented by a semiconductor light emitting device. In the present invention, a light emitting diode (LED) is exemplified as a type of semiconductor light emitting device that converts current into light. The light emitting diode is formed in a small size, and through this, it can serve as a unit pixel even in the second state.

Looking schematically together with FIG. 11 to the structure of the display device capable of front and rear touch as described above, the display device 1000 according to the present invention includes a substrate 1120, a touch sensor unit 1110, a transparent junction ( 1130) and a display unit 1150.

As described above with reference to FIG. 2 , a plurality of semiconductor light emitting devices implementing unit pixels may be disposed on the display unit 1150 . The touch sensor unit 1110 overlaps the display unit 1150 . The touch sensor unit 1110 and the display unit 1150 may overlap each other with the transparent joint 1130 interposed therebetween. The touch sensor unit 1110 is disposed on one side of one side and the other side of the plurality of semiconductor light emitting devices to sense a touch on the display unit 1500 . That is, the touch sensor unit 1110 may be disposed on any one of one surface and the other surface of the display unit 1500 .

In addition, a substrate 1120 made of tempered glass or polyimide may be stacked on the touch sensor unit 1110 .

In the present invention, since the display unit 1150 is made of semiconductor light emitting devices, it is possible to implement a thin film display having a very thin thickness. Accordingly, the touch sensor unit 1110 may be made of a thin structure and material in consideration of the thickness of the display. For example, the touch sensor unit 1110 has a capacitive touch and may be formed of a touch electrode formed on a substrate made of tempered glass or polyimide.

Meanwhile, in order to implement the thinnest touch screen suitable for a flexible display unit, the touch electrode may be formed of a single layer (or single layer). Meanwhile, the touch sensor unit 1110 may be bonded to the display unit 1500 through a transparent bonding unit 1130, and through this, according to the present invention, a flexible touch screen may be implemented.

Hereinafter, a flexible display implemented using the light emitting diode and having a touch sensor will be described in more detail with reference to drawings. 12 are conceptual diagrams for explaining a plurality of touch sensor areas in a display device according to the present invention.

Meanwhile, in describing FIG. 12 , the structure of the display device 1000 discussed above will be described.

In the display device according to the present invention, the semiconductor light emitting device is electrically connected to the first electrodes 120 and 220 and the second electrodes 140 and 240 (see FIGS. 2, 3A, 7, and 8). In this case, the first electrodes 120 and 220 may be data lines for transmitting data driving signals, and the second electrodes 140 and 240 may be scan lines for transmitting scan driving signals. As described above, one of the data lines may be an electrode for controlling a single color. That is, semiconductor light emitting devices or phosphors may be disposed so that red (R), green (G), and blue (B) are sequentially emitted along one scan line, and through this, a unit pixel may be implemented. Meanwhile, in the display device according to the present invention, a plurality of scan lines and a plurality of data lines are provided, and a plurality of semiconductor light emitting elements are disposed along each scan line.

Meanwhile, in the display device according to the present invention, the display device may be driven in units of frames. That is, the controller may drive the display unit 1150 and the touch sensor unit 1110 in units of frames. For example, the controller may sequentially supply current to the scan lines provided in the display device every frame. Accordingly, the semiconductor light emitting devices disposed to correspond to each scan line may sequentially emit light along each scan line as current is sequentially supplied to each scan line. Meanwhile, even if current is sequentially supplied along each scan line, if current is not supplied to the data line under the control of the control unit, it is obvious to those skilled in the art that the semiconductor light emitting device corresponding to the data line to which no current is supplied does not emit light. Therefore, a detailed description thereof is omitted.

Meanwhile, in the display device according to the present invention, in order to sense a touch applied to the display device, the touch sensor unit 1100 may be driven in units of frames in which current is sequentially supplied to scan lines.

That is, in the display device according to the present invention, the display unit 1150 and the touch sensor unit 1110 may be driven in frame units. Hereinafter, in explaining the driving method of the display unit 1150 and the touch sensor unit 1110, for convenience of description, as shown in FIG. 12, eight scan lines (scan1 to scan8) and eight It will be described assuming a display device having data lines (data1 to data8).

As shown, the display unit 1150 includes a plurality of semiconductor light emitting devices arranged to be electrically connected to a plurality of scan lines. A plurality of semiconductor light emitting devices may form a plurality of semiconductor light emitting device arrays along each scan line.

For example, as illustrated, a plurality of semiconductor light emitting device arrays 1150a, 1150b, 1150c, 1150d, 1150e, 1150f, 1150g, and 1150h may be formed along a plurality of scan lines scan1 to scan8. The semiconductor light emitting device arrays 1150a, 1150b, 1150c, 1150d, 1150e, 1150f, 1150g, and 1150h correspond to sequentially supplying current to the plurality of scan lines scan1 to scan8, sequentially in array units. can emit light.

Meanwhile, as illustrated, the touch sensor unit 1110 is disposed to overlap the semiconductor light emitting elements provided in the display unit 1150 .

The touch sensor unit 1110 may include a plurality of sensing regions 1110a, 1110b, 1110c, and 1110d. A boundary between the plurality of sensing regions 1110a, 1110b, 1110c, and 1110d is formed in a direction parallel to the scan line.

Each of the plurality of sensing regions 1110a, 1110b, 1110c, and 1110d includes semiconductor light emitting device arrays 1150a, 1150b, 1150c, 1150d, 1150e, 1150f, 1150g, 1150h) may overlap with at least some of them.

For example, in FIG. 12 , the first sensing region 1110a includes the first and second semiconductor light emitting device arrays 1150a and 1150b disposed to correspond to the first and second scan lines scan 1 and scan 2 . may overlap. Also, the second sensing region 1110b may overlap the third and fourth semiconductor light emitting device arrays 1150c and 1150d disposed to correspond to the third and fourth scan lines scan 3 and scan 4 . Furthermore, the third sensing region 1110c may overlap the fifth and sixth semiconductor light emitting device arrays 1150e and 1150f disposed to correspond to the fifth and sixth scan lines scan 5 and scan 6 . Finally, the fourth sensing region 1110d may overlap the seventh and eighth semiconductor light emitting device arrays 1150g and 1150h disposed to correspond to the seventh and eighth scan lines scan 7 and scan 8 . .

In the display device according to the present invention, driving of the display unit 1150 and driving of the touch sensor unit 1110 may be simultaneously performed. That is, the controller sequentially supplies current to the plurality of scan lines (scan 1 to scan 8) in order to turn on the display unit 1150, and at the same time, the plurality of sensing regions 1110a included in the touch sensor unit 1110. , 1110b, 1110c, and 1110d) may process a touch.

In this way, each of the plurality of sensing areas may cover a plurality of scan lines, and each sensing area may cover at least two scan lines.

Meanwhile, the number of scan lines covered by each sensing region may vary depending on the display resolution. Depending on the resolution, the number of scan lines covered by each sensing area may be several to hundreds or thousands. On the other hand, in the display device according to the present invention, it is possible to determine the number of divisions of the touch sensor unit according to the display resolution, but when the touch sensor unit is divided into a large number of sensing areas, touch driving time may be delayed, and thus touch driving Considering time, it can be divided into an appropriate number of sensing regions.

Hereinafter, with reference to the above structure, a method of driving the display unit and the touch sensor unit of the display device according to the present invention will be described in more detail along with the accompanying drawings. 13 and 14 are conceptual diagrams for explaining a touch sensor driving method in a display device according to the present invention.

In the display device according to the present invention, the control unit may sequentially supply current to a plurality of scan lines every frame to emit light from semiconductor light emitting devices included in an array of semiconductor light emitting devices arranged to correspond to each scan line. .

At this time, the controller selects a sensing area overlapping with a semiconductor light emitting device array disposed to correspond to a scan line to which current is supplied among the plurality of sensing areas 1110a, 1110b, 1110c, and 1110d included in the touch sensor unit 1110. It may process a touch on at least one sensing area except for the touch.

More specifically, the sensing of the touch input is not performed in a sensing region corresponding to the plurality of semiconductor light emitting devices driven in an on state among the plurality of sensing regions, and the semiconductor light emitting devices driven in an off state and It is performed in the sensing area of the corresponding position.

That is, since a touch on a sensing region overlapping with an array of semiconductor light emitting elements disposed to correspond to a scan line to which current is supplied is not accurately sensed due to noise caused by lighting of the semiconductor light emitting elements, in the present invention, A touch on a sensing region that does not overlap with a semiconductor light emitting device array including a semiconductor light emitting device is sensed. Therefore, according to the present invention, it is possible to prevent malfunction of touch sensing due to noise caused by light emission (turning on) of the semiconductor light emitting device.

Meanwhile, the touch sensor unit 1110 according to the present invention may have at least four sensing areas. That is, the touch sensor unit 1110 may be divided into at least four parts. In this way, when the sensing area is divided into at least four equal parts, sensing of the touch input may be performed in a sensing area that overlaps with the semiconductor light emitting device array including the currently lit semiconductor light emitting device and a sensing area that is not adjacent to the sensing area.

Therefore, in this case, since the sensing of the touch input is performed in a sensing area overlapping the semiconductor light emitting device array including the currently lit semiconductor light emitting device and a sensing area spaced apart from each other, noise due to the lighting of the semiconductor light emitting device is further minimized. It can be.

Therefore, sensing of a touch input is performed in a sensing area not adjacent to a sensing area corresponding to a plurality of semiconductor light emitting devices driven in an on state among sensing areas corresponding to semiconductor light emitting devices driven in an off state. It can be done.

Furthermore, the display unit 1150 according to the present invention may also be divided into a plurality of regions corresponding to the fact that the touch sensor unit 1110 is divided into a plurality of regions. For example, if the touch sensor unit 1110 is divided into four areas, the display unit 1150 may be divided into four areas correspondingly.

Meanwhile, boundaries of regions included in the display unit 1150 may correspond to boundaries of regions of the touch sensor unit 1110 . For example, the first area of the touch sensor unit 1110 may overlap the first area of the display unit 1150 .

Furthermore, corresponding to the division of the display unit 1150 into a plurality of regions, scan lines included in the display unit 1150 may also be divided into a plurality of groups.

For example, scan lines arranged to correspond to the first area of the display unit 1150 form a first group, and scan lines arranged to correspond to the second area of the display unit 1150 form a second group. can achieve Accordingly, the first group of scan lines may be arranged to correspond to the first area of the sensing area, and the second group of scan lines may be arranged to correspond to the second group of the sensing area. That is, each group of scan lines may overlap each of the areas disposed to correspond to each group of scan lines among the areas of the sensing area overlapping the display unit 1150 .

In this case, while a scan line corresponding to the first group is turned on, a touch to a sensing area (eg, a first sensing area) corresponding to the first group among the plurality of touch sensing areas is processed. It may not be.

Accordingly, in the present invention, while a scan line corresponding to the first group is turned on, a touch to a sensing area not adjacent to the first sensing area positioned to correspond to the first group may be processed.

Meanwhile, in this specification, 'processing a touch' means processing a contact of a touch object 1101 (see FIG. 11 ) with respect to a corresponding sensing region as a touch input. Conversely, 'touch is not processed' may mean a case in which the corresponding sensing region is driven in an off state and capacitance does not change even when the touch object 1101 is contacted. Also, in another meaning, 'touch is not processed' means that even if the corresponding sensing region is driven in an on state, the capacitance change due to the contact of the touch target object 1101 is not processed as a touch input under the control of the controller. can mean no

For example, the controller according to the present invention drives (emits) semiconductor light emitting elements electrically connected to a scan line to which current is supplied in an on state, and a plurality of semiconductor light emitting devices driven in an on state among the plurality of sensing regions. A touch is sensed in an area other than an area adjacent to the elements. That is, the controller may sense a touch input applied to at least one of the plurality of sensing areas except for a sensing area overlapping with semiconductor light emitting devices electrically connected to the scan line to which the current is supplied.

That is, the sensing of the touch input is not performed in a sensing region corresponding to the plurality of semiconductor light emitting devices driven in the on state among the plurality of sensing regions, and the sensing region corresponding to the semiconductor light emitting devices driven in the off state. It can be performed in the sensing area of the location.

As an example, the control unit may, while the semiconductor light emitting devices electrically connected to the scan line to which the current is supplied are driven in an on state, in a sensing region overlapping the semiconductor light emitting devices electrically connected to the scan line to which the current is supplied. The included touch sensor can be driven in an off state.

For example, as shown in FIGS. 12 and 13 , the first and second scan lines (or a second scan line corresponding to the first and second scan lines) are supplied with current to the first and second scan lines. The first sensing region 1110a overlapping the first and second semiconductor arrays 1150a and 1150b may be driven in an off state In this case, even if a touch is applied to the first sensing region 1110a, the controller: This cannot be recognized as a touch input.

Furthermore, while current is supplied to the first and second scan lines scan 1 and scan 2, the control unit excluding the first sensing area 1110a among the plurality of sensing areas 1110a, 1110b, 1110c, and 1110d. At least one sensing region may be driven in an on state. Therefore, according to the present invention, current is supplied to the first and second scan lines scan 1 and scan 2, so that the semiconductor light emitting devices corresponding to the first and second semiconductor light emitting device arrays 1150a and 1150b Due to being driven in the on state, an erroneous touch sensing operation may be prevented from noise generated in the first sensing region 1110a.

Meanwhile, the touch sensor unit 1110 according to the present invention may have at least four sensing areas. In this way, when the sensing area is divided into at least four equal parts, sensing of the touch input may be performed in a sensing area that overlaps with the semiconductor light emitting device array including the currently lit semiconductor light emitting device and a sensing area that is not adjacent to the sensing area. Therefore, in this case, since the sensing of the touch input is performed in a sensing area overlapping the semiconductor light emitting device array including the currently lit semiconductor light emitting device and a sensing area spaced apart from each other, noise due to the lighting of the semiconductor light emitting device is further minimized. It can be.

Furthermore, as described above, boundaries of regions included in the display unit 1150 may correspond to boundaries of regions of the touch sensor unit 1110 . For example, the first area of the touch sensor unit 1110 may overlap the first area of the display unit 1150 . Furthermore, corresponding to the display unit 1150 being divided into a plurality of areas, scan lines included in the display unit 1150 may also be divided into a plurality of groups.

For example, scan lines arranged to correspond to the first area of the display unit 1150 form a first group, and scan lines arranged to correspond to the second area of the display unit 1150 form a second group. can achieve Accordingly, the first group of scan lines may be arranged to correspond to the first area of the sensing area, and the second group of scan lines may be arranged to correspond to the second group of the sensing area. That is, each group of scan lines may overlap each of the areas disposed to correspond to each group of scan lines among the areas of the sensing area overlapping the display unit 1150 .

In this case, while a scan line corresponding to the first group is turned on, a touch to a sensing area (eg, a first sensing area) corresponding to the first group among the plurality of touch sensing areas is processed. It may not be.

Accordingly, in the present invention, while a scan line corresponding to the first group is turned on, a touch to a sensing area not adjacent to the first sensing area positioned to correspond to the first group may be processed.

For example, as shown in FIG. 13 , the control unit may first and second scan lines (or first and second scan lines) while the first and second scan lines (first group) are driven in an on state. At least one sensing area other than the first sensing area 1110a overlapping the semiconductor light emitting device array arranged to correspond to the line, for example, the third sensing area 1110c, the touch line driving timeline of FIG. 13 ' c') may be driven in an on state to sense a touch to the display unit 1150 .

Meanwhile, the first sensing region 1110a overlapped with the first and second scan lines includes scan lines (scan 3 to scan 8) different from the first and second scan lines (scan 1, scan 2, first group). It can be driven in the on state while current is supplied to it.

At this time, the first sensing region 1110a is continuously turned on while current is supplied to the first and second scan lines (scan 1, scan 2, first group) and other scan lines (scan 3 to scan 8). It can be driven as , or it can be driven in the on state at any point in time.

That is, the controller may drive a touch sensor included in a sensing area overlapped with a scan line to which current is supplied, in an on state in a section in which current is not supplied to a scan line arranged to correspond to the overlapped sensing area. .

Also, as shown, the control unit is arranged to correspond to the third and fourth scan lines (or the third and fourth scan lines) while the third and fourth scan lines (second group) are driven in an on state. at least one sensing area other than the second sensing area 1110b overlapping the semiconductor light emitting device array), for example, the fourth sensing area 1110d (refer to the touch line driving timeline 'd' in FIG. 13) By driving in the on state, a touch to the display unit 1150 may be sensed.

And, as shown, the control unit is arranged to correspond to the fifth and sixth scan lines (or the fifth and sixth scan lines) while the fifth and sixth scan lines (third group) are driven in an on state. At least one sensing region other than the third sensing region 1110c overlapped with the semiconductor light emitting device array), for example, the first sensing region 1110a (refer to the touch line driving timeline 'a' in FIG. 13) By driving in the on state, a touch to the display unit 1150 may be sensed.

As described above, according to the present invention, the controller drives the sensing area that overlaps with the scan line currently being driven in the on state and the sensing area that is spaced apart from the scan line that is currently being driven in the on state, so that it overlaps with the scan line that is currently being driven in the on state. The display device may be controlled so that a touch is sensed in an area other than the sensing area.

Meanwhile, as described above, in the display device according to the present invention, a touch is sensed in a sensing area that overlaps with a scan line group currently driven in an on state and a sensing area that is not adjacent to a sensing area. Furthermore, when the touch sensor unit 1110 is divided into quarters, the location of the area where the touch input is sensed may have the same distance regardless of the location of the scan line group currently driven in the on state. Accordingly, when touch sensing is performed in an area that does not overlap with a scan line group currently driven in an on state, the same or corresponding noise reduction effect can be obtained.

As described above, the control unit sequentially supplies current to the plurality of scan lines on a frame basis to drive semiconductor light emitting elements electrically connected to the first scan line to which current is supplied in an on state, and to detect the plurality of sensing lines. A touch sensor included in the first sensing region overlapping the semiconductor light emitting devices driven in the on state among the regions 1110a, 1110b, 1110c, and 1110d is turned on in a section where current is not supplied to the first scan line. state can be driven. Further, the control unit stops supplying current to the first scan line within the frame, supplies current to a scan line different from the first scan line, and turns on semiconductor light emitting elements electrically connected to the other scan line. state, the touch sensor of the sensing region overlapping semiconductor light emitting devices electrically connected to the first scan line to which the supply of current is stopped may be driven in an on state. Meanwhile, at this time, the touch sensor included in the sensing area overlapped with the semiconductor light emitting elements electrically connected to the other scan line is driven in an off state while the semiconductor light emitting elements electrically connected to the other scan line are driven in an on state. It can be.

Meanwhile, in the display device according to the present invention, in addition to the method of driving the sensing area overlapping with the scan line currently being supplied in an off state, a touch on the sensing area overlapping with the scan line currently being supplied is performed as a touch input. may not be processed. Therefore, in this case, even if a sensing region overlapping with a scan line currently being supplied is driven in an on state, while current is being supplied to a scan line corresponding to the sensing region, contact with the corresponding sensing region is a touch input. may not be processed.

As described above, in the display device according to the present invention, the touch sensors included in the plurality of sensing regions are sequentially driven in an on state in units of each sensing region, and the sensing regions driven in an on state are driven in an on state when the current is supplied. This corresponds to an area separated from the sensing area overlapped with the scan line.

Accordingly, as shown in (a) and (b) of FIG. 14 , while current is supplied to the first and second scan lines scan 1 and scan 2 , the first and second scan lines scan 1 and scan 2 A touch may be sensed in the third sensing region 1110c spaced apart from the first sensing region 1110a overlapping scna 2 . And, as shown in (c) and (d) of FIG. 14, while the current is supplied to the third and fourth scan lines scan 3 and scan 4, the third and fourth scan lines scan 3 and scan 4, respectively. A touch may be sensed in the fourth sensing region 1110d spaced apart from the second sensing region 1110b overlapping scna 4 . Furthermore, as illustrated in (e) and (f) of FIG. 14 , while current is supplied to the fifth and sixth scan lines scan 5 and scan 6 , the fifth and sixth scan lines scan 5 and scan 6 A touch may be sensed in the first sensing region 1110a spaced apart from the third sensing region 1110c overlapping scna 6 . And, as shown in (g) and (h) of FIG. 14, while current is supplied to the seventh and eighth scan lines scan 7 and scan 8, the seventh and eighth scan lines scan 7 and 8 scan lines scan 7 and scan 8 respectively. A touch may be sensed in the second sensing region 1110b spaced apart from the fourth sensing region 1110d overlapping scna 8 .

Meanwhile, in order to implement a thin film display device required by wearable devices, etc., the display unit 1150 and the touch sensor unit 1110 must be combined or integrated in a minimum structure so that the display device can be implemented in a thin film form.

In the present invention, a method of sensing a touch using the scan electrode of the display unit 1150 without the above-described touch sensor unit 1110 will be described. That is, a method for minimizing noise induced by touch sensing electrodes while using scan electrodes of the display unit 1150 as touch electrodes without the touch sensor unit 1110 described above is shown in FIGS. 15 to 18. refer to and explain.

15 to 18 are diagrams illustrating scan electrodes of a display unit according to the present invention. Hereinafter, in describing the driving method of the display unit 1150, for convenience of description, as shown in FIGS. 15 to 18, the scan electrodes of the display unit 1150 are 16 scan electrodes , electrode 1 (E1) to electrode 16 (E16)).

First, the control unit of the display apparatus 1000 sequentially supplies current (driving signal) to a first group of scan electrodes among the plurality of scan electrodes at a display driving time for driving the display apparatus. For example, the controller sequentially supplies a current (driving signal) to a first group of scan electrodes among a plurality of scan electrodes provided in the display unit 1150 every frame. Accordingly, the semiconductor light emitting devices electrically connected to the scan electrodes of the first group sequentially emit light as current (driving signal) is sequentially supplied to the scan electrodes of the first group. Meanwhile, even if current is sequentially supplied to the scan electrodes of the first group, if current is not supplied to the data line under the control of the control unit, the semiconductor light emitting device corresponding to the data line to which no current is supplied does not emit light.

As shown in FIG. 15, assuming that the scan electrodes of the display unit are composed of 16 scan electrodes (eg, electrode 1 to electrode 16), the control unit performs the first step according to a passive matrix (PM) method. Current is sequentially supplied to the scan electrodes of the group (e.g., electrode 1 to electrode 4). For example, the control unit sequentially selects electrodes 1 to 4 as scan electrodes of the first group among a plurality of scan electrodes (e.g., electrodes 1 to 16) provided in the display unit 1150 every frame. supplies current to Accordingly, the semiconductor light emitting devices electrically connected to electrodes 1 to 4, which are scan electrodes of the first group, sequentially emit light as current is sequentially supplied to electrodes 1 to 4, which are scan electrodes of the first group. Meanwhile, even if current is sequentially supplied to electrodes 1 to 4, which are scan electrodes of the first group, if current is not supplied to the data line under the control of the control unit, the semiconductor light emitting element corresponds to the data line to which no current is supplied. does not emit light.

The scan electrodes of the first group are not necessarily limited to electrodes 1 to 4, and several to hundreds of scan electrodes may be used as the scan electrodes of the first group.

While the control unit sequentially supplies current to the first group of scan electrodes (e.g., electrodes 1 to 4), the second group of scan electrodes spaced apart from the first group of scan electrodes (e.g., electrodes 1 to 4) Touch inputs applied to the electrodes 9 to 12) are sensed.

When a touch (eg, a finger touch) is applied to the scan electrodes of the second group spaced apart from the scan electrodes of the first group, the control unit performs electrostatic discharge of the scan electrodes of the second group according to the touch. The touch may be sensed based on a change in capacitance. In addition, when the controller senses a signal change (capacitance change) of the second group of scan electrodes as a touch while sequentially supplying current to the first group of scan electrodes, the controller senses the second group of scan electrodes. A plurality of signals (capacitance) may be summed, and whether to touch may be determined based on the summed signals. That is, the control unit may sense a touch by summing a plurality of signals (capacitance) sensed by the scan electrodes of the second group and increasing the capacitance.

The scan electrodes of the second group are not necessarily limited to the electrodes 9 to 12, and several to hundreds of scan electrodes may be used as the scan electrodes of the second group.

The control unit uses the second group of scan electrodes, which are spaced apart from the first group of scan electrodes by a predetermined distance (for example, by the length of several to hundreds of scan electrodes), as the touch sensing area 1501. can also be set. For example, the controller performs touch sensing in an area from electrode 9 to electrode 12 while sequentially supplying current from electrode 1 to electrode 4. At this time, since the area from electrode 1 to electrode 4 and the touch sensing area 1501 are spaced apart by the area corresponding to electrode 5 to electrode 7, noise generated by the current supplied to electrode 1 to electrode 4 is removed from the touch sensing area. (electrode 9 to electrode 12) (1501) is not induced.

As shown in FIG. 16, when current is sequentially supplied (applied) to the first group of scan electrodes (e.g., electrodes 1 to 4), the controller operates in a passive matrix (PM) method. Accordingly, current is sequentially supplied to the third group of scan electrodes (e.g., electrode 5 to electrode 8). For example, the control unit sequentially selects electrodes 1 to 4 as scan electrodes of the first group among a plurality of scan electrodes (e.g., electrodes 1 to 16) provided in the display unit 1150 every frame. After supplying current, current is sequentially supplied to the scan electrodes of the third group (for example, electrode 5 to electrode 8). Accordingly, the semiconductor light emitting devices electrically connected to electrodes 5 to 8, which are scan electrodes of the third group, sequentially emit light as current is sequentially supplied to electrodes 5 to 8, which are scan electrodes of the third group. Meanwhile, even if current is sequentially supplied to electrodes 5 to 8, which are scan electrodes of the third group, if current is not supplied to the data line under the control of the control unit, the semiconductor light emitting element corresponds to the data line to which no current is supplied. does not emit light.

The scan electrodes of the third group are not necessarily limited to the electrodes 5 to 8, and several to hundreds of scan electrodes may be used as the scan electrodes of the third group.

While the control unit sequentially supplies current to the third group of scan electrodes (e.g., electrodes 5 to 8), the fourth group of scan electrodes spaced apart from each other (e.g., electrodes 5 to 8) A touch input applied to electrodes 13 to 16 is sensed. That is, when a touch (eg, a finger touch) is applied to the scan electrodes of the fourth group spaced apart from the scan electrodes of the third group, the control unit controls the scan electrodes of the fourth group according to the touch. The touch may be sensed based on a change in capacitance of . In addition, when the control unit senses a signal change (capacitance change) of the fourth group of scan electrodes as a touch while sequentially supplying current to the third group of scan electrodes, the controller senses the fourth group of scan electrodes. A plurality of signals (capacitance) may be summed, and whether to touch may be determined based on the summed signals.

The fourth group of scan electrodes is not necessarily limited to the electrodes 13 to 16, and several to hundreds of scan electrodes may be used as the fourth group of scan electrodes.

The control unit uses a fourth group of scan electrodes, which are spaced apart from the third group of scan electrodes by a preset distance (for example, by the length of several to hundreds of scan electrodes), as the touch sensing area 1601. can also be set. For example, the controller performs touch sensing in the region from the electrode 13 to the electrode 16 while sequentially supplying current to the electrode 5 to the electrode 8. At this time, since the area from electrode 5 to electrode 8 and the touch sensing area 1601 are spaced apart by the area corresponding to electrode 9 to electrode 12, noise generated by the current supplied to electrode 5 to electrode 8 is removed from the touch sensing area. (electrode 13 to electrode 16) 1601 is not induced.

As shown in FIG. 17, when current is sequentially supplied (applied) to the third group of scan electrodes (eg, electrodes 5 to 8), the control unit operates in a passive matrix (PM) method. Accordingly, current is sequentially supplied to the scan electrodes of the fifth group (for example, electrode 9 to electrode 12). For example, the control unit sequentially selects electrodes 5 to 8 as scan electrodes of the third group among a plurality of scan electrodes (e.g., electrodes 1 to 16) provided in the display unit 1150 every frame. After supplying current, current is sequentially supplied to the scan electrodes of the fifth group (for example, electrode 9 to electrode 12). Accordingly, the semiconductor light emitting devices electrically connected to the fifth group of scan electrodes, electrodes 9 to 12, sequentially emit light as current is sequentially supplied to the fifth group of scan electrodes, electrodes 9 to 12. Meanwhile, even if current is sequentially supplied to electrodes 9 to 12, which are scan electrodes of the fifth group, if current is not supplied to the data line under the control of the controller, the semiconductor light emitting device corresponds to the data line to which no current is supplied. does not emit light.

The scan electrodes of the fifth group are not necessarily limited to the electrodes 9 to 12, and several to hundreds of scan electrodes may be used as the scan electrodes of the fifth group.

While the control unit sequentially supplies current to the fifth group of scan electrodes (for example, electrodes 9 to 12), the sixth group of scan electrodes spaced apart from each other (for example, electrodes 9 to 12) Touch input applied to electrodes 1 to 4) is sensed. That is, when a touch (eg, a finger touch) is applied to the scan electrodes of the sixth group spaced apart from the scan electrodes of the fifth group, the controller controls the scan electrodes of the sixth group according to the touch. The touch may be sensed based on a change in capacitance of . In addition, when the control unit senses a signal change (capacitance change) of the sixth group of scan electrodes as a touch while sequentially supplying current to the fifth group of scan electrodes, the controller senses the sixth group of scan electrodes. A plurality of signals (capacitance) may be summed, and whether to touch may be determined based on the summed signals.

The scan electrodes of the sixth group are not necessarily limited to electrodes 1 to 4, and several to hundreds of scan electrodes may be used as the scan electrodes of the sixth group.

The controller uses the sixth group of scan electrodes, which are spaced apart from the fifth group of scan electrodes by a preset distance (eg, the length of several to hundreds of scan electrodes), as the touch sensing area 1701. can also be set. For example, the controller performs touch sensing in an area from electrode 1 to electrode 4 while sequentially supplying current from electrode 9 to electrode 12 . At this time, since the area from electrode 9 to electrode 12 and the touch sensing area 1701 are separated by the area corresponding to electrode 5 to electrode 8, noise generated by the current supplied to electrode 9 to electrode 12 is removed from the touch sensing area. (electrode 1 to electrode 4) 1701 is not induced.

As shown in FIG. 18, when current is sequentially supplied (applied) to the fifth group of scan electrodes (e.g., electrodes 9 to 12), the controller operates in a passive matrix (PM) method. Accordingly, current is sequentially supplied to the scan electrodes of the seventh group (e.g., electrodes 13 to 16). For example, the control unit sequentially selects electrodes 9 to 12 as scan electrodes of the fifth group among a plurality of scan electrodes (e.g., electrodes 1 to 16) provided in the display unit 1150 every frame. After supplying current, current is sequentially supplied to the scan electrodes of the seventh group (for example, electrodes 13 to 16). Accordingly, the semiconductor light emitting devices electrically connected to electrodes 13 to 16, which are the scan electrodes of the seventh group, sequentially emit light as current is sequentially supplied to the electrodes 13 to 16, which are the scan electrodes of the seventh group. Meanwhile, even if current is sequentially supplied to electrodes 13 to 16, which are scan electrodes of the seventh group, if current is not supplied to the data line under the control of the control unit, the semiconductor light emitting device corresponds to the data line to which no current is supplied. does not emit light.

The scan electrodes of the seventh group are not necessarily limited to the electrodes 13 to 16, and several to hundreds of scan electrodes may be used as the scan electrodes of the seventh group.

While sequentially supplying current to the seventh group of scan electrodes (for example, electrodes 13 to 16), the control unit is spaced apart from the eighth group of scan electrodes (for example, electrodes 13 to 16). Touch inputs applied to the electrodes 5 to 8) are sensed. That is, when a touch (eg, a finger touch) is applied to the scan electrodes of the eighth group spaced apart from the scan electrodes of the seventh group, the control unit controls the scan electrodes of the eighth group according to the touch. The touch may be sensed based on a change in capacitance of . In addition, when the control unit senses a signal change (capacitance change) of the eighth group of scan electrodes as a touch while sequentially supplying current to the seventh group of scan electrodes, the control unit is sensed by the eighth group of scan electrodes. A plurality of signals (capacitance) may be summed, and whether to touch may be determined based on the summed signals.

The eighth group of scan electrodes is not necessarily limited to electrodes 5 to 8, and several to hundreds of scan electrodes may be used as the eighth group of scan electrodes.

The control unit uses the scan electrodes of the eighth group, which are spaced apart from the scan electrodes of the seventh group by a predetermined distance (for example, by the length of several to hundreds of scan electrodes), as the touch sensing area 1801. can also be set. For example, the controller performs touch sensing in an area from the electrode 5 to the electrode 8 while sequentially supplying current to the electrode 13 to the electrode 16. At this time, since the area from electrode 13 to electrode 16 and the touch sensing area 1801 are spaced apart by the distance corresponding to the electrode 9 to electrode 12, the noise generated by the current supplied to the electrode 13 to electrode 16 is removed from the touch sensing area. (electrode 5 to electrode 8) 1801 is not induced.

As described above, the display device using the semiconductor light emitting device according to the embodiment of the present invention senses a touch input using the scan electrode of the display unit 1150 without the touch sensor unit 1110, thereby providing a Noise induced by electrodes can be minimized.

A display device using a semiconductor light emitting device according to an embodiment of the present invention may reduce the thickness of the display device by sensing a touch input using the scan electrode of the display unit 1150 without the touch sensor unit 1110 .

Hereinafter, a method of improving touch accuracy by using not only the scan electrode of the display unit 1150 but also the touch sensing region (touch sensor electrode array) of the touch sensor unit 1110 will be described with reference to FIG. 19 .

19 is a diagram illustrating a scan electrode and a touch sensor unit 1110 of a display unit according to the present invention.

As shown in FIG. 19 , the touch sensor unit 1110 is disposed on the display unit 1150 and includes a plurality of touch sensing areas 1901a to 1901d. The touch sensor unit 1110 has a first touch sensing area 1902 facing the touch sensing area 1902 composed of the first group of scan electrodes among the plurality of touch sensing areas 1901a to 1901d during display driving time for driving the display unit. The touch input is sensed in the touch sensing area 1901c.

A plurality of electrodes (eg, touch electrodes) corresponding to the plurality of touch sensing regions 1901a to 1901d and an opposing scan electrode may be electrically connected to each other.

The control unit makes the touch input effective only when a touch input is sensed through the touch sensing area 1902 composed of the first group of scan electrodes and at the same time the touch input is sensed in the first touch sensing area 1901. It can also be determined by touch input. On the other hand, if a touch input is sensed through the touch sensing area 1902 composed of the first group of scan electrodes and the touch input is not sensed in the first touch sensing area 1901, the controller detects the touch input. It may be determined that the touch input is not valid. If the touch input is not sensed through the touch sensing area 1902 composed of the first group of scan electrodes and the touch input is sensed in the first touch sensing area 1901, the control unit determines that the touch input is valid. It can also be determined that it is not an input.

For example, the control unit may select a first group of scan electrodes (e.g., electrodes 1 (E1) to 16 (E16)) among a plurality of scan electrodes (e.g., electrodes 1 (E1) to 16 (E16)) provided in the display unit 1150 every frame. For example, current is sequentially supplied to electrode 1 (E1) to electrode 2 (E2). Accordingly, the semiconductor light emitting devices electrically connected to electrodes 1 to 2, which are scan electrodes of the first group, sequentially emit light as current is sequentially supplied to electrodes 1 to 2, which are scan electrodes of the first group. Meanwhile, even if current is sequentially supplied to electrodes 1 to 2, which are scan electrodes of the first group, if current is not supplied to the data line under the control of the controller, the semiconductor light emitting element corresponds to the data line to which no current is supplied. does not emit light.

The scan electrodes of the first group are not necessarily limited to electrodes 1 to 2, and several to hundreds of scan electrodes may be used as the scan electrodes of the first group.

While the control unit sequentially supplies current to the first group of scan electrodes (eg, electrodes 1 to 2), the second group of scan electrodes spaced apart from each other (eg, electrodes 1 to 2). Touch inputs applied to the electrodes 9 to 12) are sensed.

When a touch (eg, a finger touch) is applied to the scan electrodes of the second group spaced apart from the scan electrodes of the first group, the control unit performs electrostatic discharge of the scan electrodes of the second group according to the touch. The touch may be sensed based on a change in capacitance.

The scan electrodes of the second group are not necessarily limited to the electrodes 9 to 12, and several to hundreds of scan electrodes may be used as the scan electrodes of the second group.

The control unit uses the second group of scan electrodes, which are spaced apart from the first group of scan electrodes by a preset distance (for example, by the length of several to hundreds of scan electrodes), as the touch sensing area 1902. can also be set. For example, the controller performs touch sensing in the region 1902 from the electrode 9 to the electrode 12 while sequentially supplying current from the electrode 1 to the electrode 2. At this time, the touch sensor unit 1110 is a touch sensing area 1902 composed of the first group of scan electrodes among the plurality of touch sensing areas 1901a to 1901d while current is sequentially supplied from electrode 1 to electrode 2. The touch input is sensed in the first touch sensing region 1901c opposite to ). That is, in the touch sensor unit 1110, while current is sequentially supplied from electrode 1 to electrode 2, the touch sensing area 1902 composed of the first group of scan electrodes among the plurality of touch sensing areas 1901a to 1901d The touch input is sensed in the first touch sensing region 1901c overlapped with ).

When sensing the touch input in the first touch sensing region 1901c, the controller may deactivate (turn off state) the remaining touch sensing regions 1901a, 190b, and 1901d.

The control unit makes the touch input effective only when a touch input is sensed through the touch sensing region 1902 composed of the first group of scan electrodes and at the same time the touch input is sensed in the first touch sensing region 1901c. It can also be determined by touch input.

Hereinafter, a method of sensing a touch using the scan electrode of the display unit 1150 or sensing a touch using the touch sensor unit 1110 according to a user's request, and automatically displaying the display unit ( A method of sensing a touch using the scan electrode in step 1150 will be described with reference to FIG. 19 .

First, the controller displays the first touch mode and the second touch mode on a display unit (not shown) according to a user's request. For example, the control unit provides a first touch mode for sensing a touch using the touch sensor unit 1110 and a second touch mode for sensing a touch using a scan electrode of the display unit 1150 to the display unit according to a user request. display

When the first touch mode is selected by the user, the controller senses the touch by operating the touch sensor unit 1110 and does not sense the touch by using the scan electrode of the display unit 1150 . For example, when the first touch mode is selected by the user, the controller senses a touch using only the touch sensor unit 1110 and applies it to the touch sensing area 1902 composed of scan electrodes of the display unit 1150. G does not sense touch input.

When the second touch mode is selected by the user, the controller senses the touch using the scan electrode of the display unit 1150 and does not sense the touch using the touch sensor unit 1110 . For example, when the second touch mode is selected by the user, the controller senses a touch input applied to the touch sensing region 1902 composed of the scan electrodes of the display unit 1150, and the touch sensor unit 1110 detects a touch input. Applied touch input is not sensed.

The controller may periodically detect whether the touch sensor unit 1110 is out of order, and automatically select the second touch mode when the touch sensor unit 1110 is out of order. For example, when the touch sensor unit 1110 is out of order, the controller automatically selects the second touch mode, deactivates the touch sensor unit 1110 according to the second touch mode, and simultaneously controls the display unit 1150. A touch input applied to the touch sensing region 1902 composed of scan electrodes is sensed.

As described above, the display device using the semiconductor light emitting device according to the embodiment of the present invention senses a touch input using the scan electrode of the display unit 1150 without the touch sensor unit 1110, thereby providing a Noise induced by electrodes can be minimized.

In an embodiment of the present invention, the thickness of the display device may be reduced by sensing a touch input using the scan electrode of the display unit 1150 without the touch sensor unit 1110 .

In an embodiment of the present invention, touch accuracy may be improved by using not only the scan electrode of the display unit 1150 but also the touch sensing region (touch sensor electrode array) of the touch sensor unit 1110 .

In an embodiment of the present invention, a touch may be sensed using the scan electrode of the display unit 1150 or a touch may be sensed using the touch sensor unit 1110 according to a user's request.

In an embodiment of the present invention, when the touch sensor unit fails, a touch may be automatically sensed using the scan electrode of the display unit 1150 .

The display device using the semiconductor light emitting device described above is not limited to the configuration and method of the embodiments described above, but the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. may be

Claims (10)

a display unit including a plurality of semiconductor light emitting devices arranged to be electrically connected to a scan line composed of a plurality of scan electrodes;
a touch sensor unit disposed on the display unit and including a plurality of touch sensing areas; and
sequentially applying a driving signal to a first group of scan electrodes among the plurality of scan electrodes at a display driving time for driving the display unit;
A control unit sensing a touch input using a second group of scan electrodes spaced apart from the first group of scan electrodes while sequentially applying a driving signal to the first group of scan electrodes;
The control unit,
A display device according to a user's request, displaying a first touch mode for sensing a touch using the touch sensor unit and a second touch mode for sensing a touch using a scan electrode of the display unit on a display unit. The method of claim 1, wherein the control unit,
The display device according to claim 1 , wherein the touch input is sensed based on a capacitance change of the scan electrodes of the second group while sequentially applying a driving signal to the scan electrodes of the first group. The method of claim 1, wherein the control unit,
While a driving signal is sequentially applied to the first group of scan electrodes, an area including the second group of scan electrodes that are spaced apart from the first group of scan electrodes by a preset distance is a touch sensing area. A display device, characterized in that set to. The method of claim 3, wherein the preset distance,
The display device, characterized in that the separation distance is a separation distance that minimizes noise generated by sequentially applying a driving signal to the scan electrodes of the first group. delete The method of claim 1, wherein the touch sensor unit,
The display apparatus according to claim 1 , wherein a first touch sensing region, among the plurality of touch sensing regions, facing the scan electrodes of the first group senses the touch input during a display driving time for driving the display unit. The method of claim 6, wherein the control unit,
The display apparatus of claim 1 , wherein the touch input is determined as a valid touch input only when the touch input is sensed through the scan electrodes of the second group and the touch input is simultaneously sensed in the first touch sensing area. delete The method of claim 1, wherein the control unit,
The display apparatus characterized in that it periodically detects whether the touch sensor unit is out of order, and automatically selects the second touch mode when the touch sensor unit is out of order. A control method of a display device including a plurality of semiconductor light emitting elements arranged to be electrically connected to a scan line composed of a plurality of scan electrodes,
sequentially applying a driving signal to a first group of scan electrodes among the plurality of scan electrodes at a display driving time for driving the display device;
Sensing a touch input using a second group of scan electrodes spaced apart from the first group of scan electrodes while sequentially applying a drive signal to the first group of scan electrodes;
In the step of sensing the touch input,
Displaying a first touch mode for sensing a touch using a touch sensor unit disposed on a display unit of the display device and a second touch mode for sensing a touch using a scan electrode of the display unit on a display unit according to a user's request. A control method of a display device comprising a.

Images