Patent Description:
Recently, in the field of display technology, display devices having excellent features such as thinness, flexibility and the like have been developed. Currently, major displays that have been commercialized are represented by Liquid Crystal Display (LCD) and Organic Light Emitting Diodes (OLED).

Meanwhile, a Light Emitting Diode (LED) is a semiconductor light emitting element well known for converting current into light, and has been used as a light source for display images of an electronic device along with GaP:N series green LEDs since <NUM> when red LEDs using GaAsP compound semiconductors were commercialized.

Recently, such a Light Emitting Diode (LED) is gradually miniaturized and fabricated as a micrometer-sized LED and used as a pixel of a display device.

Such LED technology shows characteristics of low power, high luminance, and high reliability compared to other display devices/panels, and can be applied to flexible devices. Therefore, it has been actively studied in research institutes and companies in recent years.

When such an LED is used as a pixel, light traveling to a lateral side of the LED may be trapped inside a display device or a display module. This may act as a factor that degrades performance in terms of light extraction efficiency.

In addition, the light traveling to the lateral side of the LED may generate a bright line at the boundary between display modules through internal total reflection, which may act as a defect from the display perspective.

Meanwhile, in order to overcome this, the contrast may decrease when the content of the scattering agent in a scattering layer is increased. That is, the increase in the scattering agent has a trade-off relationship in which the blackness decreases in the display device. In addition, this may cause performance degradation due to an increase in a diffusive reflection property at the top of the LED.

<CIT> discloses a display device with a plurality of light-emitting elements each forming a pixel, wherein the lateral sides of a light-emitting element are covered by an insulating layer and the remaining space between the light-emitting elements is filled with a reflective or absorptive barrier layer thereby preventing light interference between adjacent pixels. From <CIT>, a white solder resist layer for a printed circuit board assembled with light-emitting diodes is known. <CIT> and <CIT> disclose embodiments of light-emitting devices which include reflective layers between the individual light-emitting elements. <CIT> discloses sidewall reflectors disposed on the sidewalls of an LED which comprise porous high refractive index light scattering particles dispersed in a transparent binder. <CIT> discloses an optoelectronic component with a medium with pigments disposed between a plurality of semiconductor chips and a light diffusion layer located on a top side of the light emitting elements, the light diffusing layer containing e.g. Al<NUM>O<NUM> particles. <CIT> discloses another display device.

Therefore, there is a need for a method for solving this problem.

Accordingly, embodiments of the present invention are directed to a display device using a layered light emitting diode that substantially obviates one or more problems due to limitations and disadvantages of the related art.

One technical objective of the present invention is to provide a display device using a light emitting element, which may increase light efficiency by allowing light traveling to a lateral side of the light emitting element to travel to a front side.

Another technical objective of the present invention is to provide a display device, which may uniformize viewing angles due to different light distribution properties among red, green, and blue.

When a display device has a structure of modules connected to each other, further technical objective of the present invention is to provide a layered light emitting element and display device using the same, which may improve the effect of bright line occurrence between the modules.

Additional advantages, objects, and features of the present invention will be set forth in the detailed description as well as the accompanying drawings.

To achieve these objects, a display device with the features of claim <NUM> is provided. The display device includes, inter alia, a wiring substrate; a light emitting element disposed on the wiring substrate to form an individual pixel and having a semiconductor structure including a multitude of semiconductor layers stacked to emit lights of first to third colors, respectively; and a reflective layer filling a space between the light emitting elements, the reflective layer comprising: a transparent resin layer; and particles dispersed in the transparent resin layer. Further, optional features are defined in the dependent claims.

Accordingly, the present invention provides the following effects and/or advantages.

First, according to one embodiment of the present invention, it is possible to increase light efficiency by allowing light traveling to a lateral side of a light emitting element to travel to a front side.

In addition, it is possible to uniformize the viewing angles due to different light distribution properties among red, green, and blue.

In addition, when display devices have a module structure in a manner of being connected to each other, it is possible to improve the phenomenon of bright line occurrence between modules.

In addition, there is an effect of substantially extending the size of a light emitting element.

The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings, which are given by illustration only, and thus are not limitative of the present invention, and wherein:.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts, and redundant description thereof will be omitted. As used herein, the suffixes "module" and "unit" are added or used interchangeably to facilitate preparation of this specification and are not intended to suggest distinct meanings or functions. In describing embodiments disclosed in this specification, relevant well-known technologies may not be described in detail in order not to obscure the subject matter of the embodiments disclosed in this specification.

Furthermore, although the drawings are separately described for simplicity, embodiments implemented by combining at least two or more drawings are also within the scope of the present disclosure.

In addition, when an element such as a layer, region or module is described as being "on" another element, it is to be understood that the element may be directly on the other element or there may be an intermediate element between them.

The display device described herein is a concept including all display devices that display information with a unit pixel or a set of unit pixels. Therefore, the display device may be applied not only to finished products but also to parts. For example, a panel corresponding to a part of a digital TV also independently corresponds to the display device in the present specification. The finished products include a mobile phone, a smartphone, a laptop, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate PC, a tablet, an Ultrabook, a digital TV, a desktop computer, and the like.

In addition, the semiconductor light emitting element mentioned in this specification is a concept including an LED, a micro LED, and the like, and may be used interchangeably therewith.

<FIG> is a cross-sectional diagram showing pixel regions of a display device using light emitting elements. <FIG> is a cross-sectional diagram showing a unit pixel region of a display device using light emitting elements. <FIG> is an enlarged diagram showing a display device using light emitting elements according to one embodiment of the present disclosure.

Referring to <FIG>, in a display device <NUM>, light emitting elements <NUM> that configure a multitude of pixels may be located in a manner of being arranged on a wiring substrate <NUM> equipped with a wiring electrode <NUM>. In this case, a reflective layer <NUM> may be located among a multitude of the light emitting elements <NUM>.

For example, the reflective layer <NUM> may fill a space between the light emitting elements <NUM>. In this case, the reflective layer <NUM> may include reflective particles <NUM> (see <FIG>) dispersed in a transparent resin layer <NUM> (see <FIG>). This will be described in detail later.

In <FIG>, the wiring electrode <NUM> is schematically illustrated. A multitude of the wiring electrodes <NUM> may be located on a wiring substrate <NUM> in a manner of being partitioned. Here, the wiring electrode <NUM> may include a data electrode (i.e., a pixel electrode) and a scan electrode (i.e., a common electrode).

Although not shown in the drawing, the wiring electrode <NUM> arranged on the wiring substrate <NUM> may be connected to a TFT layer provided with a Thin Film Transistor (TFT). The data electrode (i.e., the pixel electrode) may be connected to such a TFT layer. A detailed description thereof will be omitted.

In the exemplary embodiment, as illustrated, the reflective layer <NUM> may have a hang structure <NUM> between the neighboring light emitting elements <NUM>. That is, a curved structure <NUM> formed concavely between the neighboring light emitting elements <NUM> and continuously connected may be formed on a top surface of the reflective layer <NUM>.

In other words, a maximum height a of the light emitting element <NUM> may be different from a minimum height a' of the reflective layer <NUM>. For example, the minimum height a' of the reflective layer <NUM> may be lower than the maximum height a of the light emitting element <NUM>. In other words, the height a' of the hang structure <NUM> may be higher than half of the height a of the light emitting element <NUM>.

The hang structure <NUM> may be associated with a fabricating process of the reflective layer <NUM>. For example, when the reflective layer <NUM> is formed using a jetting process in which material is applied using a nozzle and then cured, the hang structure <NUM> may be formed.

The light emitting element <NUM> may be disposed on the wiring substrate <NUM> in a manner of forming an individual pixel. For example, a single light emitting element <NUM> may be configured to form a single pixel. Since the reflective layer <NUM> is formed to surround at least the side of the single light emitting element <NUM> forming the individual pixel, light emitted from the light emitting element <NUM> may be emitted upward without being mixed with light emitted from another light emitting element <NUM> forming a neighboring pixel.

That is, since light is emitted in all directions from the light emitting element <NUM>, the light emitted in a lateral direction from the individual light emitting element <NUM> may be reflected by the reflective layer <NUM> and then emitted upward from the display device <NUM>.

Therefore, since the light emitted from the light emitting element <NUM> and traveling in a lateral direction is blocked by the reflective layer <NUM>, it is possible to fundamentally prevent the occurrence of bright lines between the pixels in the display device <NUM>.

Referring to <FIG>, for example, the light emitting element <NUM> forming the individual pixel may include a semiconductor structure including a multitude of semiconductor layers <NUM>, <NUM>, and <NUM> stacked to emit light of a first color, a second color, and a third color.

As a specific example, the light emitting element <NUM> may include a layered semiconductor light emitting element capable of emitting red, green, and blue light.

For example, such a layered light emitting device <NUM> may include a semiconductor structure including a first semiconductor layer <NUM> emitting red light, a second semiconductor layer <NUM> emitting blue light, and a third semiconductor layer <NUM> emitting green light.

Here, each of the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> may include semiconductor layers capable of emitting light of individual colors. For example, each of the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> may include an active layer capable of emitting light of each individual color. As another example, each of the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> may include an n-type semiconductor layer and a p-type semiconductor layer together with an active layer capable of emitting light of an individual color. This individual structure is omitted in <FIG>.

In addition, the light emitting element <NUM> may include a first electrode <NUM> and a second electrode <NUM> electrically connected to one side and the other side of the semiconductor structure, respectively. In <FIG>, the semiconductor structure and the electrical connection structure of the first electrode <NUM> and the second electrode <NUM> are schematically illustrated.

A support layer <NUM> may be located on the semiconductor structure. Here, the support layer <NUM> may include a growth substrate in which a semiconductor structure is grown or a transfer substrate in which the semiconductor structure is transferred and bonded. The support layer <NUM> may be transparent with respect to light emitted from the semiconductor structure. For example, the support layer <NUM> may include a sapphire substrate.

Meanwhile, extension pads <NUM> and <NUM> may be provided to the first electrode <NUM> and the second electrode <NUM> electrically connected to one side and the other side of the semiconductor structure, respectively. The sizes of the extension pads <NUM> and <NUM> may increase to be larger than the outer surface of the semiconductor structure.

The description of the light emitting element <NUM> as other light sources will be described in detail below.

Here, the reflective layer <NUM> may be located to surround lateral sides of the semiconductor structure including the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> of the light emitting element <NUM> at least.

In addition, the reflective layer <NUM> may be located to cover the first electrode <NUM> and the second electrode <NUM>. In addition, for example, the reflective layer <NUM> may be located to cover the extension pads <NUM> and <NUM>.

The reflective layer <NUM> may be located to further surround a lateral side of the support layer <NUM> of the light emitting element <NUM>. In an example not belonging to the present invention, the reflective layer <NUM> may be located to surround all sides except the top side of the support layer <NUM> of the light emitting element.

Referring to <FIG>, the reflective layer <NUM> includes reflective particles <NUM> dispersed in the transparent resin layer <NUM>.

In an exemplary embodiment, the refractive index of the reflective particles <NUM> may be different from the refractive index of the transparent resin layer <NUM>.

The reflective particles <NUM> may include at least one of silicon, titanium, zirconium, or an oxide thereof, that is, silicon oxide (SiOx), titanium oxide (Ti-Ox), and zirconium oxide (ZrOx).

Meanwhile, the transparent resin layer <NUM> may be formed of a resin material. For example, the transparent resin layer <NUM> may include at least one material of silicon, epoxy, and urethane.

The thickness of the reflective layer <NUM> may be set to have a reflectivity of <NUM>% or more by the transparent resin layer <NUM> and the reflective particles <NUM>.

<FIG> is a cross-sectional diagram showing a light emitting element of a display device using light emitting elements. <FIG> is a diagram showing a modified example of the light emitting element of <FIG>.

Referring to <FIG>, a light emitting element <NUM> forming an individual pixel may include a semiconductor structure including a multitude of semiconductor layers <NUM>, <NUM>, and <NUM> stacked to emit lights of a first color, a second color, and a third color, respectively.

As a specific example, the light emitting element <NUM> may include a layered semiconductor light emitting element capable of emitting red, green, and blue lights.

For example, the layered light emitting element <NUM> may include a semiconductor structure including a first semiconductor layer <NUM> emitting red light, a second semiconductor layer <NUM> emitting blue light, and a third semiconductor layer <NUM> emitting green light.

Here, each of the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> may include a semiconductor layer capable of emitting light of an individual color. For example, each of the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> may include an active layer capable of emitting light of each individual color. As another example, each of the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> may include an n-type semiconductor layer and a p-type semiconductor layer together with an active layer capable of emitting light of each individual color.

In addition, the light emitting element <NUM> may include a first electrode <NUM> and a second electrode <NUM> electrically connected to one side and the other side of the semiconductor structure, respectively.

A support layer <NUM> may be located on the semiconductor structure. Here, the support layer <NUM> may include a growth substrate in which a semiconductor structure is grown or a transfer substrate in which the semiconductor structure is transferred and bonded. The size of the support layer <NUM> in a plane direction may be larger than that of the semiconductor structure.

Reflective layers <NUM> and <NUM> may be located on a lateral side of the semiconductor structure of the light emitting element <NUM>.

Here, the reflective layers <NUM> and <NUM> may be located to surround the lateral side of the semiconductor structure including the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> at least.

In addition, the reflective layers <NUM> and <NUM> may be located to cover the first electrode <NUM> and the second electrode <NUM>.

The reflective layers <NUM> and <NUM> may be located to further surround the lateral side of the support layer <NUM> of the light emitting element <NUM>. For example, the reflective layer <NUM> may be located to surround all sides except the top side of the support layer <NUM> of the light emitting element.

In this case, as an exemplary embodiment, the reflective layer may include a first reflective layer <NUM> covering the lateral side and the bottom side of the semiconductor structure including the first semiconductor layer <NUM>, the second semiconductor layer <NUM>, and the third semiconductor layer <NUM> and the lateral sides of the first and second electrodes <NUM> and <NUM> and a second reflective layer <NUM> covering the lateral sides of the first reflective layer <NUM> and the support layer <NUM>.

The reflective layers <NUM> and <NUM> may substantially extend the size of the light emitting element <NUM>. The light emitting surface of the light emitting element <NUM> may be extended to a size including the reflective layers <NUM> and <NUM>. That is, the light emitting surface having an area corresponding to the semiconductor structure may be extended to the size including the reflective layers <NUM> and <NUM>.

Referring to <FIG>, extension pads <NUM> and <NUM> respectively connected to the first electrode <NUM> and the second electrode <NUM> may be further provided.

The sizes of the extension pads <NUM> and <NUM> may be increased to be larger than the outer surface of the semiconductor structure. For example, the sizes of the extension pads <NUM> and <NUM> may extend to the outer surface of the reflective layer <NUM>.

In this case, the top sides of the extension pads <NUM> and <NUM> may be in contact with the reflective layers <NUM> and <NUM>. The extension pads <NUM> and <NUM> may further improve the reflectivity of the reflective layers <NUM> and <NUM>. In addition, the extension pads <NUM> and <NUM> may form substantially external electrode pads of the light emitting element <NUM>.

Other undescribed matters may be applied as described with reference to <FIG>. For example, as described with reference to <FIG>, the reflective layers <NUM> and <NUM> may include reflective particles <NUM> dispersed in a transparent resin layer <NUM>. That is, properties of the reflective layers <NUM> and <NUM> of the present embodiment may be substantially the same as those of the reflective layer <NUM> described above. In other words, the properties of the reflective layers <NUM> and <NUM> of the present embodiment may be the same as those of the reflective layer <NUM> described above, except for the property of having the hang structure <NUM>. Thus, redundant descriptions will be omitted.

<FIG> is a cross-sectional diagram showing a light emitting element of a display device using light emitting elements according to an embodiment of the present invention. <FIG> is a diagram showing a modified example of the light emitting element of <FIG>.

Referring to <FIG>, a light emitting device <NUM> forming an individual pixel includes a semiconductor structure including a multitude of semiconductor layers <NUM>, <NUM>, and <NUM> stacked to emit lights of a first color, a second color, and a third color, respectively. Since the description of the semiconductor structure is the same as the description described with reference to <FIG>, a redundant description will be omitted.

In addition, the light emitting element <NUM> includes a first electrode <NUM> and a second electrode <NUM> electrically connected to one side and the other side of the semiconductor structure, respectively.

A support layer <NUM> is located on the semiconductor structure. Here, the support layer <NUM> may include a growth substrate in which a semiconductor structure is grown or a transfer substrate in which the semiconductor structure is transferred and bonded. The size of the support layer <NUM> in a plane direction may be larger than that of the semiconductor structure.

Reflective layers <NUM> and <NUM> are located on a lateral side of the semiconductor structure of the light emitting element <NUM>.

As an exemplary embodiment, the reflective layer includes a first reflective layer <NUM> covering lateral and bottom sides of the semiconductor structure including a first semiconductor layer <NUM>, a second semiconductor layer <NUM>, and a third semiconductor layer <NUM> and lateral sides of the first and second electrodes <NUM> and <NUM> and a second reflective layer <NUM> covering the first reflective layer <NUM> and lateral and top sides of the support layer <NUM>.

As described above, the second reflective layer <NUM> is located to surround the lateral and top sides of the support layer <NUM> of the light emitting element <NUM>. The second reflective layer <NUM> may improve uniformity of light emitted from the light emitting element <NUM>.

The reflective layers <NUM> and <NUM> may substantially extend the size of the light emitting element <NUM>. A light emitting surface of the light emitting element <NUM> may be extended to a size including the reflective layers <NUM> and <NUM>. That is, the light emitting surface having an area corresponding to the semiconductor structure may be extended to the size including the reflective layers <NUM> and <NUM>.

The sizes of the extension pads <NUM> and <NUM> may increase to be larger than the outer surface of the semiconductor structure. For example, the sizes of the extension pads <NUM> and <NUM> may extend to the outer surface of the reflective layer <NUM>.

In this case, top sides of the extension pads <NUM> and <NUM> may be in contact with the reflective layers <NUM> and <NUM>. The extension pads <NUM> and <NUM> may further improve the reflectivity of the reflective layers <NUM> and <NUM>. In addition, the extension pads <NUM> and <NUM> may form substantially external electrode pads of the light emitting element <NUM>.

Other undescribed matters may be applied as described with reference to <FIG>, <FIG> and <FIG>. For example, as described with reference to <FIG>, the reflective layers <NUM> and <NUM> include reflective particles <NUM> dispersed in a transparent resin layer <NUM>. That is, properties of the reflective layers <NUM> and <NUM> of the present embodiment are substantially the same as those of the reflective layer <NUM> described above. In other words, except for the property of having the hang structure <NUM>, the properties of the reflective layers <NUM> and <NUM> of the present embodiment may be the same as those of the reflective layer <NUM> described above. Thus, redundant descriptions will be omitted.

<FIG> is a cross-sectional diagram showing a light emitting element of a display device using light emitting elements according to another embodiment of the present invention.

Referring to <FIG>, an embodiment of a display device <NUM> in which the light emitting element <NUM> according to the embodiment of <FIG> forms an individual pixel is illustrated.

That is, the light emitting element <NUM> according to the embodiment of <FIG> is installed on a wiring substrate <NUM> to form an individual pixel. In this case, a gap layer <NUM> may fill a space between the individual light emitting elements <NUM>.

In this way, the display device <NUM> may be implemented with a simple structure by using the light emitting element <NUM> having a structure extended by the reflective layers <NUM>, <NUM>, and <NUM>.

In this case, a module display device <NUM> including a predetermined number of light emitting elements <NUM> may be implemented on the wiring substrate <NUM> having a predetermined size. The display device <NUM> having a desired size may be fabricated by combining the module display devices <NUM>.

<FIG> are schematic cross-sectional diagrams showing a process for fabricating a light emitting element of a display device using light emitting elements according to an example not belonging to the present invention.

Referring to <FIG>, a process of fabricating a light emitting element according to the embodiment shown in <FIG> are shown step by step.

First, referring to <FIG>, a support layer <NUM> may be located on a first substrate <NUM> to form a predetermined gap G. In <FIG>, a semiconductor structure located on the support layer <NUM> is omitted.

While a first electrode <NUM> and a second electrode <NUM> are located on the support layer <NUM>, a photoresist <NUM> may be formed on the first electrode <NUM> and the second electrode <NUM>.

Referring to <FIG>, a reflective layer <NUM> may be entirely formed in the state shown in <FIG>. Here, the reflective layer <NUM> may have the same properties as the reflective layers <NUM>, <NUM>, <NUM>, and <NUM> described above.

Next, referring to <FIG>, the thickness of a top side of the structure shown <FIG> may be reduced. For example, as shown in <FIG> through a process such as wrapping the structure shown in <FIG>, a photoresist <NUM> having a thinned thickness may be located on the first electrode <NUM> and the second electrode <NUM>.

In this case, a reflective layer <NUM> having a thinned thickness may be located among the support layer <NUM>, the first electrode <NUM>, and the second electrode <NUM>. That is, the reflective layer <NUM> may be located between the structures that will form the respective light emitting elements.

Referring to <FIG>, a metal to form an extension pad <NUM> may be formed in a state in which the photoresist <NUM> is removed.

Thereafter, by dicing an area D dividing individual light emitting elements by such a method as laser, the light emitting element <NUM> having the structure shown in <FIG> may be fabricated.

<FIG> are schematic cross-sectional diagrams showing a process for fabricating a light emitting element of a display device using light emitting elements according to one embodiment of the present invention.

Referring to <FIG>, a process of fabricating a light emitting element shown in <FIG> is shown step by step.

First, referring to <FIG>, a support layer <NUM> may be located on a first substrate <NUM> to form a predetermined interval G. In <FIG>, a semiconductor structure located on the support layer <NUM> is omitted.

Referring to <FIG>, the structure formed in <FIG> may be transferred to a second substrate <NUM>.

In addition, while a first electrode <NUM> and a second electrode <NUM> are located on the support layer <NUM>, a photoresist <NUM> may be formed on the first electrode <NUM> and the second electrode <NUM>.

In this case, a reflective layer <NUM> may be located between the second substrate <NUM> and the support layer <NUM>.

Subsequently, referring to <FIG>, a metal to form an extension pad <NUM> may be formed in a state in which the photoresist <NUM> is removed.

Thereafter, when an area D dividing individual light emitting elements is diced by such a method as laser, a light emitting element <NUM> having the structure shown in <FIG> may be fabricated.

<FIG> is a diagram of pictures showing light emitting states by a light emitting element of a display device using light emitting elements according to another embodiment of the present disclosure.

<FIG> illustrates a light emitting state by a light emitting element in a state in which the reflective layers <NUM>, <NUM>, and <NUM> are not provided as a comparative example.

In addition, <FIG> illustrates a light emitting state by the light emitting element in a state in which the reflective layers <NUM>, <NUM>, and <NUM> are provided as an embodiment.

Comparing (a) and (b) of <FIG>, it may be confirmed that the light emitting surface and the light emitting intensity are extended. That is, as described above, the size of the light emitting element <NUM> may be substantially extended by the reflective layers <NUM>, <NUM>, and <NUM>. That is, the light emitting surface having an area corresponding to the semiconductor structure may be extended to a size including the reflective layers <NUM>, <NUM>, and <NUM>.

According to an embodiment of the present invention, light traveling to a lateral side of a light emitting element is made to travel to a front side, thereby increasing light efficiency.

Moreover, it is possible to uniformize the viewing angles due to different light distribution properties among red, green, and blue.

In addition, when a display device has a structure of mutually-connected modules, it is possible to improve the effect of bright line occurrence between the modules.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention as defined.

Claim 1:
A display device (<NUM>), comprising:
a wiring substrate (<NUM>);
a plurality of light emitting elements (<NUM>), each light emitting element (<NUM>) of the plurality of light emitting elements (<NUM>) being disposed on the wiring substrate (<NUM>) to form an individual pixel and having a semiconductor structure including a multitude of semiconductor layers (<NUM>, <NUM>, <NUM>) stacked to emit lights of first to third colors, respectively, first and second electrodes (<NUM>, <NUM>) electrically connected to one side and the other side of the semiconductor structure on a first face of the semiconductor structure, respectively, and a support layer (<NUM>) disposed on a second face of the semiconductor structure;
and
a reflective layer filling a space between the plurality of light emitting elements (<NUM>), the reflective layer comprising:
a transparent resin layer (<NUM>); and
reflective particles (<NUM>) dispersed in the transparent resin layer (<NUM>),
wherein the reflective layer includes a first reflection layer (<NUM>) covering the lateral side and a bottom side of the semiconductor structure of each light emitting element (<NUM>), and a second reflection layer (<NUM>) covering the lateral sides of the first reflective layer (<NUM>) and the support layer (<NUM>) of each light emitting element (<NUM>) and being located on a top side of the support layer (<NUM>) of each light emitting element (<NUM>).