KR20200073980A - Display apparatus - Google Patents

Abstract

According to an embodiment of an application of the present invention, a display device comprises: a substrate having a light emitting region; a light emitting device disposed in the light emitting region on the substrate; at least one light exiting region disposed in the light emitting region; a light blocking layer disposed in the light emitting region and having an opening part overlapping the at least one light exiting region; and a light guide part disposed in the light emitting region and guiding light generated from the light emitting device to the at least one light exiting region. Accordingly, it is possible to increase luminous efficiency and minimize external light reflectance.

Description

Display device {DISPLAY APPARATUS}

The present application relates to a display device.

The display device is widely used as a display screen of a notebook computer, a tablet computer, a smart phone, a portable display device, and a portable information device, in addition to the display screen of a television or monitor.

A conventional light emitting display device has a problem in that a pixel electrode of each of a plurality of sub-pixels emits light and reflects external light, thereby deteriorating the reflection visibility. That is, when the area of the pixel electrode is increased in order to improve the luminous efficiency of the light emitting display device, the external light reflectance is also increased to deteriorate the reflection visibility.

In addition, the conventional light emitting display device may prevent reflection of external light to some extent by combining a separate optical film or polarizing film on the display panel, but such an optical film or polarizing film has a disadvantage of high cost. In addition, even when a separate optical film is combined with a display panel, a conventional light emitting display device has a problem that it is insufficient to minimize reflectance of external light.

An object of the present application is to provide a display device capable of improving light emission efficiency and minimizing external light reflectance.

An object of the present application is to provide a display device capable of improving light emission efficiency and minimizing external light reflectance without having a separate polarization layer or circular polarization conversion layer.

A display device according to an exemplary embodiment of the present application includes a substrate having a light emitting region, a light emitting element disposed in a light emitting region on a substrate, at least one light emitting region disposed in the light emitting region, and disposed in the light emitting region and overlaps at least one light emitting region And a light guide portion disposed in the light emitting region and guiding light generated by the light emitting element to the at least one light emitting region.

A display device according to another exemplary embodiment of the present application includes a first light emitting area and a second light emitting area in which light emitting elements are disposed, a light blocking layer disposed in each of the first and second light emitting areas, and having at least one opening, and a light emitting device. And a light guide unit that guides the generated light to exit through at least one opening of the light blocking layer.

Specific details of other examples are included in the detailed description and drawings.

The display device according to the present application includes a light-blocking layer covering the remaining light-emitting area except for the light-emitting area, and a light guide part guiding light emitted from the light-emitting area to the light-emitting area, thereby improving light emission efficiency and minimizing external light reflectivity. Can.

The display device according to the present application can improve light emission efficiency and minimize external light reflectance without having a separate polarization layer or a circular polarization conversion layer.

The display device according to the present application can provide a product with low cost and high efficiency by including a light blocking layer and a light guide unit.

In addition to the effects of the present application mentioned above, other features and advantages of the present application are described below, or will be clearly understood by those skilled in the art from the description and description.

1 is a perspective view showing a display device according to an example of the present application.
2 is a plan view illustrating a display device according to an example of the present application.
3 is an example of a top view of the pixel of FIG. 2.
4 is a first embodiment of a cross-sectional view taken along line II of FIG. 3.
5 is a modified example of FIG. 3.
6 is another modified example of FIG. 3.
7 is a diagram illustrating a path in which light is emitted and a path in which external light is reflected or absorbed in the display device of FIG. 4.
8 is a second embodiment of a cross-sectional view of the cutting line II of FIG. 3.
9 is a third embodiment of a cross-sectional view taken along line II of FIG. 3.
10 is a fourth embodiment of a cross-sectional view taken along line II of FIG. 3.
11 is a graph illustrating light emission efficiency according to a structure of a light guide unit in a display device according to an example of the present application.
12 is a fifth embodiment of a cross-sectional view taken along line II of FIG. 3.
13 is a sixth embodiment of a cross-sectional view taken along line II of FIG. 3.
14 is a seventh embodiment of a cross-sectional view taken along line II of FIG. 3;
15 is a diagram illustrating a path in which light is emitted and a path in which external light is reflected or absorbed in the display device of FIG. 14.
16 is another example of a top view of the pixel of FIG. 2.
17 is an embodiment of a cross-sectional view taken along line II-II of FIG. 16.
18 is a graph illustrating external light reflectivity according to an area ratio of an emission region to an emission region in a display device according to an example of the present application.

Advantages and features of the present application, and a method of achieving them will become apparent by referring to examples described below in detail together with the accompanying drawings. However, the present invention is not limited to the examples disclosed below, but will be implemented in various different forms, only the examples allow the disclosure of the present invention to be complete, and to those skilled in the art to which the present invention pertains. It is provided to fully inform the scope of the invention, and the invention is only defined by the scope of the claims.

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

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

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

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

In describing the components of the present application, terms such as first and second may be used. These terms are only for distinguishing the component from other components, and the essence, order, order, or number of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected to or connected to the other component, but different components between each component It will be understood that the "intervenes" may be, or each component may be "connected", "coupled" or "connected" through other components.

Accordingly, the display device in the present application may include a narrow display device itself such as an LCM, an LED module, and even a set device that is an application product or an end consumer device including an LCM, an LED module, or the like.

For example, when the display panel is an electroluminescent (LED) display panel, it may include a plurality of gate lines and data lines, and sub pixels formed in an intersection region of the gate lines and the data lines. And, an array substrate including a thin film transistor which is an element for selectively applying voltage to each sub-pixel, a light emitting element (LED) layer on the array substrate, and an encapsulation substrate disposed on the array substrate to cover the light emitting element layer or It may be configured to include an encapsulation (Encapsulation) substrate. The encapsulation substrate protects the thin film transistor and the light emitting device layer from external impact, and can prevent moisture or oxygen from penetrating the light emitting device layer. In addition, the layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer or a quantum dot.

In addition, the display panel may further include a backing such as a metal plate attached to the display panel. It is not limited to the metal plate, and other structures may also be included.

Each of the features of the various examples of the present application may be partially or totally combined or combined with each other, technically various interlocking and driving may be possible, and each of the examples may be independently implemented with respect to each other or may be implemented together in an associative relationship. .

Hereinafter, an example of the present application will be described with reference to the accompanying drawings and examples.

1 is a perspective view showing a display device according to an example of the present application, and FIG. 2 is a plan view showing a display device according to an example of the present application.

1 and 2, the display device 100 includes a display panel 110, a first substrate 111, a pixel array layer 190, a display driving circuit unit 210, and a scan driving circuit unit 220. do.

The display panel 110 may include a first substrate 111 and a second substrate 112. The second substrate 112 may be an encapsulation substrate.

The first substrate 111 may be made of glass or plastic, but is not limited thereto, and may be made of a semiconductor material such as a silicon wafer. The first substrate 111 may be made of a transparent material or an opaque material.

The display device 100 according to an example of the present application may be formed in a top emission method in which emitted light is emitted upward, but is not limited thereto. When the display device 100 according to an example of the present application is made of an upper emission method in which the emitted light is emitted upward, the first substrate 111 may be made of an opaque material as well as a transparent material. Meanwhile, when the display device 100 according to an example of the present application is formed in a so-called bottom emission method in which emitted light is emitted downward, a transparent material may be used for the first substrate 111.

The first substrate 111 is a base substrate, and may be a flexible substrate. For example, the first substrate 111 may include a transparent polyimide material. Considering that a high temperature deposition process is performed on the first substrate 111 made of a polyimide material, a polyimide excellent in heat resistance capable of withstanding high temperature may be used. The first substrate 111 made of a polyimide material may be formed by curing a polyimide resin coated with a predetermined thickness on an upper surface of a sacrificial layer provided on a carrier glass substrate. Here, the carrier glass substrate may be separated from the first substrate 111 by the release of the sacrificial layer by a laser release process. In addition, the sacrificial layer may be made of amorphous silicon (a-Si) or silicon nitride film (SiNx).

According to an example, the first substrate 111 may be a glass substrate. For example, the first substrate 111 may include silicon oxide (SiO2) or aluminum oxide (Al2O3) as a main component.

The first substrate 111 may include a display area AA and a non-display area NA. The display area AA is an area in which an image is displayed, and may be defined in a central portion of the first substrate 111. Here, the display area AA may correspond to the active area of the pixel array layer 190. For example, the display area AA may be formed of a plurality of sub-pixels (not shown) formed for each pixel area crossed by a plurality of gate lines (not shown) and a plurality of data lines (not shown). . Here, each of the plurality of sub-pixels may be defined as an area of a minimum unit that emits light.

The non-display area NA is an area in which an image is not displayed, and may be defined at an edge portion of the first substrate 111 surrounding the display area AA. According to an example, the non-display area NA may include a pad area having at least one pad electrode.

The pixel array layer 190 includes a thin film transistor layer and a light emitting device layer. The thin film transistor layer may include a thin film transistor, a gate insulating film, an interlayer insulating film, a passivation layer, and a planarization layer. In addition, the light emitting device layer may include a plurality of light emitting devices and a plurality of banks. A detailed configuration of the pixel array layer 190 will be described in detail in FIG. 3 below.

The display driving circuit unit 210 may be connected to a pad electrode provided in the non-display area NA of the first substrate 111 to display an image corresponding to image data supplied from the display driving system to each pixel. According to an example, the display driving circuit unit 210 may include a plurality of circuit films 211, a plurality of data driving integrated circuits 213, a printed circuit board 215, and a timing control unit 217.

Input terminals provided on one side of each of the plurality of circuit films 211 are attached to the printed circuit board 215 by a film attaching process, and output terminals provided on the other side of each of the plurality of circuit films 211 are attached to a film process It can be attached to the pad portion. According to an example, each of the plurality of circuit films 211 may be embodied as a flexible circuit film and bent to reduce the bezel area of the display device 100. For example, the plurality of circuit films 211 may be formed of a tape carrier package (TCP) or a chip on flexible board or chip on film (COF).

Each of the plurality of data driving integrated circuits 213 may be individually mounted on each of the plurality of circuit films 211. Each of the plurality of data driving integrated circuits 213 receives pixel data and a data control signal provided from the timing control unit 217, and converts pixel data into analog-specific pixel-specific data signals according to the data control signals. Data lines can be supplied.

The printed circuit board 215 supports the timing control unit 217 and may transmit signals and power between components of the display driving circuit unit 210. The printed circuit board 215 may provide signals and driving power supplied from the timing control unit 217 to the plurality of data driving integrated circuits 213 and the scan driving circuit unit 220 to display an image on each pixel. To this end, signal transmission wiring and various power wirings may be provided on the printed circuit board 215. For example, the printed circuit board 215 may be composed of one or more according to the number of circuit films 211.

The timing control unit 217 may be mounted on the printed circuit board 215 and receive image data and timing synchronization signals provided from the display driving system through a user connector provided on the printed circuit board 215. The timing control unit 217 may generate pixel data by aligning the image data with the pixel alignment structure based on the timing synchronization signal, and provide the generated pixel data to the corresponding data driving integrated circuit 213. Then, the timing control unit 217 generates each of the data control signal and the scan control signal based on the timing synchronization signal, controls the driving timing of each of the plurality of data driving integrated circuits 213 through the data control signal, and scan control The driving timing of the scan driving circuit unit 220 may be controlled through a signal. Here, the scan control signal is supplied to the corresponding scan driving circuit unit 220 through the first or/and last flexible circuit film among the plurality of circuit films 211 and the non-display area NA of the first substrate 111. Can.

The scan driving circuit unit 220 may be provided in the non-display area NA of the first substrate 111. The scan driving circuit unit 220 may generate a scan signal according to the scan control signal provided from the display driving circuit unit 210 and supply the scan signal to a scan line corresponding to a set order. According to an example, the scan driving circuit 220 may be formed in the non-display area NA of the first substrate 111 together with the thin film transistor.

FIG. 3 is an example of a plan view of the pixel of FIG. 2, and FIG. 4 is a first embodiment of a cross-sectional view taken along line I-I of FIG. 3. FIG. 5 is a modified example of FIG. 3, and FIG. 6 is another modified example of FIG. 3.

Referring to FIG. 3, pixels P having a circuit area CA and a light emission area EA may be formed in the display area AA of the display device 100. Each of the pixels P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3 and a fourth sub-pixel SP4. The first sub-pixel SP1 is a red sub-pixel that emits red light, the second sub-pixel SP2 is a green sub-pixel that emits green light, and the third sub-pixel SP3 is blue that emits blue light The sub-pixel, and the fourth sub-pixel SP4 may be a white sub-pixel emitting white light, but is not limited thereto. The arrangement order of each sub-pixel SP1, SP2, SP3, SP4 can be variously changed.

Each of the sub-pixels SP1, SP2, SP3, and SP4 may include a light emitting area EA and a light emitting area OA. The light emitting region EA corresponds to a region where the light emitting element E generates light, and the light emitting region OA corresponds to a region that emits light emitted from the light emitting element E to the outside.

Specifically, the first sub-pixel SP1 may include a first emission area EA1 and a first emission area OA1 disposed in the first emission area EA1. The second sub-pixel SP2 may include a second emission area EA2 and a second emission area OA2 disposed in the second emission area EA2. The third sub-pixel SP3 may include a third emission area EA3 and a third emission area OA3 disposed in the third emission area EA3. The fourth sub-pixel SP4 may include a fourth emission area EA4 and a fourth emission area OA4 disposed in the fourth emission area EA4.

Referring to FIG. 4, the display device 100 may be implemented in a lower emission method, but is not limited thereto. The display device 100 may be implemented by an upper light emission method, and a detailed description thereof will be described later.

The display device 100 includes a first substrate 111, a second substrate 112, a buffer layer 120, a thin film transistor T, a gate insulating film 130, an interlayer insulating film 140, a passivation layer 150, and planarization It includes a layer 160, a light emitting element (E), a bank (B), a light blocking layer (LS), a light guide unit 170, and a color filter (CF). The display device 100 may further include an encapsulation layer 180. The first substrate 111 is a base substrate, and may be a transparent flexible substrate that can be bent or bent. According to an example, the first substrate 111 may include a transparent polyimide material, but is not limited thereto and may be made of a transparent plastic material such as polyethylene terephthalate. According to another example, the first substrate 111 may be a glass substrate. For example, the first substrate 111 may include silicon dioxide (SiO2) or aluminum oxide (Al2O3) as a main component.

The display area AA of the first substrate 111 may include a circuit area CA and a light emission area EA. The circuit area CA of the first substrate 111 may include a pixel circuit driving the light emitting device E, and the pixel circuit may include at least one thin film transistor T. For example, the pixel circuit may include a driving transistor and at least one switching transistor.

The light emitting region EA of the first substrate 111 may include a light emitting element E that generates light by a pixel circuit. According to an example, the emission area EA may correspond to an opening of each of a plurality of sub-pixels defined by the bank B.

The buffer layer 120 may be disposed on the first substrate 111. According to an example, the buffer layer 120 may be formed by stacking a plurality of inorganic films. For example, the buffer layer 120 may be formed of a multilayer film in which one or more inorganic films of a silicon oxide film (SiOx), a silicon nitride film (SiNx), and a silicon oxynitride film (SiON) are stacked. The buffer layer 120 may be formed on the entire upper surface of the first substrate 111 to block moisture from penetrating the light emitting device E through the first substrate 111. Therefore, the buffer layer 120 may include a plurality of inorganic films, thereby improving the water vapor transmission rate (WVTR) of the panel.

The thin film transistor T may be disposed on the buffer layer 120 in the circuit area CA. According to an example, the thin film transistor T may include an active layer ACT, a gate electrode GE, a drain electrode DE, and a source electrode SE.

The active layer ACT may be provided in the circuit area CA of the first substrate 111. The active layer ACT is disposed on the buffer layer 120 and may overlap the gate electrode GE, the source electrode SE, and the drain electrode DE. The active layer ACT may directly contact the source electrode SE and the drain electrode DE, and may face the gate electrode GE and the gate insulating layer 130 therebetween.

The gate insulating layer 130 may be provided on the active layer ACT. According to an example, the gate insulating layer 130 may insulate the active layer ACT from the gate electrode GE. Specifically, the gate insulating layer 130 may be formed on the entire surface of the display area AA of the first substrate 111 and may be removed except for the area where the gate electrode GE is to be disposed. For example, the gate insulating layer 130 may be made of an inorganic insulating material, for example, silicon dioxide (SiO2), silicon nitride film (SiNx), and silicon oxynitride film (SiON) or multiple layers thereof. Does not work.

The gate electrode GE may be provided on the gate insulating layer 130. The gate electrode GE may overlap the active layer ACT with the gate insulating layer 130 interposed therebetween.

The interlayer insulating layer 140 may be provided on the gate electrode GE. In addition, the interlayer insulating layer 140 may be provided on the gate insulating layer 130 and the buffer layer 120. The interlayer insulating layer 140 may function to protect the thin film transistor T and insulate the drain electrode DE or the source electrode SE from the gate electrode GE. In addition, a corresponding region of the interlayer insulating layer 140 may be removed to contact the active layer ACT and the source electrode SE or the drain electrode DE. For example, the interlayer insulating layer 140 may include a contact hole through which the source electrode SE passes and a contact hole through which the drain electrode DE passes.

The drain electrode DE and the source electrode SE may be provided spaced apart from each other on the interlayer insulating layer 140. The drain electrode DE is in contact with one end of the active layer ACT through a contact hole provided in the interlayer insulating layer 140, and the source electrode SE is an active layer ACT through a contact hole provided in the interlayer insulating layer 140. You can make contact with the other end of the. In addition, the source electrode SE may directly contact the anode electrode AE through the contact hole of the passivation layer 150 and the contact hole of the planarization layer 160.

The passivation layer 150 may be provided on the interlayer insulating layer 140, the source electrode SE, and the drain electrode DE. The passivation layer 150 may function to protect the source electrode SE and the drain electrode DE. The passivation layer 150 may include a contact hole through which the anode electrode AE passes. Here, the contact hole of the passivation layer 150 may be connected to the contact hole of the planarization layer 160 to penetrate the anode electrode AE.

The planarization layer 160 may be disposed on the first substrate 111 and cover the thin film transistor T disposed in the circuit area CA. Specifically, the planarization layer 160 is provided on the passivation layer 150 to planarize the top of the thin film transistor T. Also, the planarization layer 160 may include a contact hole through which the anode electrode AE passes. Here, the contact hole of the planarization layer 160 may be connected to the contact hole of the passivation layer 150 in order to penetrate the anode electrode AE.

The light emitting device E is disposed on the planarization layer 160 in the light emitting area EA, and may be electrically connected to the thin film transistor T. The light emitting device E may include an anode electrode AE, a light emitting layer EL, and a cathode electrode CE.

The anode electrode AE is disposed on the planarization layer 160 and may be electrically connected to the source electrode SE of the thin film transistor T through a contact hole provided in the planarization layer 160. In addition, the anode electrode AE may be disposed in the emission area EA. Here, the emission area EA may correspond to an opening of each of a plurality of sub-pixels defined by the bank B. Specifically, a part of the anode electrode AE may be covered by the bank B, and another part of the anode electrode AE may be exposed without being covered by the bank B. The emission area EA may correspond to an area where the anode electrode AE is not covered by the bank B and is exposed. The anode electrode AE may be surrounded by a bank B defining an opening of each of the plurality of sub-pixels.

When the display device 100 is a lower emission method, the anode electrode AE is a transparent conductive material (TCO) such as ITO or IZO that can transmit light, or magnesium (Mg) or silver (Ag). Or, it may be formed of a semi-transmissive conductive material, such as an alloy of magnesium (Mg) and silver (Ag).

The emission layer EL may be provided on the anode electrode AE. For example, the light emitting layer EL may include a hole transporting layer, an organic light emitting layer, and an electron transporting layer. According to an example, the light emitting layer EL may further include at least one functional layer for improving light emitting efficiency and lifetime of the light emitting layer.

The emission layer EL may be formed to be common to all sub-pixels without being classified for each pixel area, but is not limited thereto. In the emission layer EL, organic emission layers that emit different color light may be patterned for each pixel area. For example, a red emission layer may be patterned on a red sub-pixel, a green emission layer may be patterned on a green sub-pixel, and a blue emission layer may be patterned on a blue sub-pixel, but is not limited thereto.

The cathode electrode CE may be provided on the emission layer EL. The cathode electrode CE is not classified for each pixel region, and may be implemented as an electrode common to all sub-pixels. When the display device 100 is a lower emission method, the cathode electrode CE may be made of a metal material having high reflectivity such as aluminum (Al), silver (Ag), and Ag alloy.

The bank B may be disposed on the planarization layer 160 in the circuit area CA. According to an example, the bank B is disposed between the emission regions EA of each of the plurality of sub-pixels, thereby defining the emission region EA of each of the plurality of sub-pixels. For example, the bank B may cover a portion of the anode electrode AE. The region where the anode electrode AE is not covered by the bank B may be defined as a light emitting region EA.

The light blocking layer LS may be disposed between the light emitting device E and the first substrate 111 in the display area AA. The light blocking layer LS is disposed in the remaining areas except for at least one light emitting area OA of the display area AA to block light. The light blocking layer LS may include a first light blocking layer LS1 disposed in the emission area EA and a second light blocking layer LS2 disposed in the circuit area CA.

The first light blocking layer LS1 may be disposed between the light emitting device E and the first substrate 111. The first light blocking layer LS1 is disposed in the emission area EA and may have at least one opening OP. In this case, at least one opening OP of the first light blocking layer LS1 may correspond to at least one light exit area OA. Specifically, the light emitting region EA corresponds to a region where the light emitting element E generates light, and the light emitting region OA corresponds to a region emitting light emitted from the light emitting element E to the outside. The first light blocking layer LS1 may include an opening OP, thereby forming at least one light emitting area OA in the light emitting area EA. As a result, the first light blocking layer LS1 may be disposed in the remaining light emitting areas EA except for at least one light emitting area OA.

The first light blocking layer LS1 may be patterned on the passivation layer 150, but is not limited thereto. For example, when the display device 100 according to the present application is configured by omitting the passivation layer 150, the first light blocking layer LS1 may be disposed between the interlayer insulating layer 140 and the planarization layer 160. have.

According to an example, the first light blocking layer LS1 may include a light blocking material or a light absorbing material. The first light blocking layer LS1 overlaps the light guide unit 170 to prevent external light from being reflected by the light guide unit 170. Specifically, the light guide unit 170 is made of a material that reflects light to guide the light emitted from the light emitting device E to the light exit area OA. Accordingly, the first light-blocking layer LS1 covers the light guide unit 170 based on the light exit direction, thereby blocking light incident on the light guide unit 170 and reflecting external light to the light guide unit 170. Can be prevented. Accordingly, the first light-blocking layer LS1 may reduce the external light reflectance of the display device 100 to improve the reflection visibility, reduce power consumption, and improve luminance. In addition, the first light-blocking layer LS1 may prevent light emitted from each of the plurality of light-emitting elements E from being mixed with each other, thereby improving light leakage and deterioration in luminescence.

According to an example, the area of the light exit area OA may be smaller than the area of the light emission area EA. Specifically, a portion of the emission area EA may overlap the first light blocking layer LS1, and another portion of the emission area EA may overlap the opening OP of the first light blocking layer LS1. . In addition, the opening OP of the first light blocking layer LS1 may correspond to the light exit area EA. Accordingly, the area of the light emitting area OA may be smaller than the area of the light emitting area EA, and the external light reflectivity of the display device 100 may be determined according to the area ratio of the light emitting area OA to the light emitting area EA. Can.

According to an example, as the area ratio of the light emitting area OA to the light emitting area EA is small, the external light reflectivity of the display device 100 may decrease. Specifically, the light emitting element E can generate light and reflect external light. For example, the larger the exposed area of the light emitting element E with respect to the light exit direction, the better the luminous efficiency can be, but the external light reflectance can also be increased at the same time, and the reflection visibility can be deteriorated. Accordingly, the display device 100 according to the present application covers the light emitting area EA excluding the light emitting area OA with the first light blocking layer LS1, thereby minimizing the exposed area of the light emitting device E in the light output direction. It is possible to reduce the external light reflectance and improve the reflection visibility. In addition, since the display device according to the present application can reduce external light reflectance through the first light-blocking layer LS1, a separate polarization layer or a polarization conversion layer may not be provided, and high manufacturing is provided to provide the polarization layer. It can solve costly problems. In addition, the display device 100 according to the present application may include a light guide unit 170 to prevent a decrease in luminous efficiency due to a decrease in the area ratio of the light emitting area OA to the light emitting area EA. The detailed description of the light guide unit 170 will be described later.

The second light blocking layer LS2 may be disposed on the first substrate 111 so as to overlap the thin film transistor T. The second light blocking layer LS may be disposed in the circuit region CA in which the thin film transistor T is disposed. The second light blocking layer LS2 may be disposed on the top surface of the first substrate 111. For example, the second light blocking layer LS2 may be formed by depositing a metal on the first substrate 111 and performing exposure patterning.

According to an example, the display device 100 may be disposed in the emission area EA excluding the light emission area OA through the first light blocking layer LS1 and the circuit area (through the second light blocking layer LS2) CA). Therefore, the display device 100 according to the present application is disposed on the remaining display area AA except for the light exit area OA through the first and second light blocking layers LS1 and LS2, thereby minimizing external light reflectivity and It can improve the reflection visibility.

The light guide unit 170 may guide light emitted from the light emitting device E to at least one light emitting area OA. Specifically, the light guide unit 170 may be disposed on the same layer as the planarization layer 160. The light guide unit 170 may be inserted into the planarization layer 160 so as to overlap with the rest of the light emitting area EA except for the light emitting area OA. For example, a portion 160a of the planarization layer 160 is formed on the circuit region CA, and is formed on the first light blocking layer LS1 so that the light guide portion 170 in the light emitting region EA is formed. Space to be inserted can be provided. That is, a portion 160a of the planarization layer 160 provided on the first light blocking layer LS1 may serve as a frame for the light guide unit 170 to be disposed. At this time, the height of the flattening layer 160 formed on the first light-blocking layer LS1 is greater than the height of the flattening layer 160 formed on the circuit region CA, and the thickness of the light-injecting portion 171 of the light guide portion 170 is higher. Can be as low as Then, when the light guide unit 170 is disposed on a portion 160a of the planarization layer 160, the other portion 160b of the planarization layer 160 is planarized so that the upper surface of the planarization layer 160 is flattened ( 170). That is, the portion 160a of the planarization layer 160 formed first in the circuit region CA and the other portion 160b of the planarization layer 160 formed later in the emission region EA may provide a flattened top surface.

The light guide unit 170 may include a light input unit 171 through which light generated from the light emitting element E is incident and a light output unit 173 through which the incident light is emitted.

The distance between the light guide unit 170 and the light emitting element E may increase as the light guide unit 170 moves from the light input unit 171 to the light output unit 173. That is, in the light guide unit 170, the light input unit 171 may be disposed closer to the light emitting device E than the light output unit 173. When the display device 100 is in the lower emission mode, the light guide unit 170 is configured such that the light input unit 171 faces the second substrate 112 and the light output unit 173 faces the first substrate 111. Arranged, light generated from the light emitting element E may be emitted to the outside through the first substrate 111.

According to an example, the light incident portion 171 of the light guide portion 170 may be in direct contact with the light emitting element E to incident light generated from the light emitting element E. That is, light generated from the light emitting element E may be incident on the light guide unit 170 through the light input unit 171. Light incident on the light guide unit 170 may be emitted through the light exit unit 173 to the outside of the light guide unit 170.

According to an example, the shape of the light incident portion 171 of the light guide portion 170 may be determined according to the shape of the light emitting area EA. The light incident portion 171 of the light guide portion 170 overlaps the light emitting region EA, and may have a shape that is greater than or equal to the light emitting region EA. For example, the light input unit 171 may be formed to correspond to the anode electrode AE surrounded by the bank B. Accordingly, the light incident portion 171 of the light guide portion 170 may cause all of the light generated from the light emitting element E to enter the light guide portion 170. As described above, the light incident portion 171 of the light guide portion 170 is in direct contact with the light emitting element E, so that light generated in the light emitting element E can be prevented from leaking.

The light guide unit 170 may have a smaller width W from the light input unit 171 to the light output unit 173. According to an example, the vertical cross section of the light guide unit 170 may have a convex curved shape toward the light input unit 171. For example, the light guide unit 170 may have a funnel shape in which the width W decreases and the inclination increases as it goes from the light input unit 171 to the light output unit 173. Light incident on the light incident portion 171 of the light guide portion 170 may be reflected by the light guide portion 170 and the cathode electrode CE and guided to the light exit portion 173. In addition, when the light guide portion 170 has a funnel shape, the path of light is shorter and the number of reflections by the light guide portion 170 and the cathode electrode CE than when the light guide portion 170 has a truncated cone shape. The light emitting efficiency of the display device 100 may be improved by decreasing. For example, since the light reflectance by the light guide unit 170 and the cathode electrode CE is less than 100%, the display device 100 according to the present application reduces the number of reflections to emit light from the display device 100 Efficiency can be improved.

According to an example, the light exit portion 173 of the light guide portion 170 may have a smaller area than the light incident portion 171. Specifically, the light guide unit 170 may be made of a material that reflects light. The light guide unit 170 may reflect light incident through the light input unit 171 and concentrate it on the light output unit 173. The light guide unit 170 may concentrate the light so as to maintain the light amount emitted through the light exit unit 173 at a level substantially equal to the amount of light incident through the light input unit 171.

In other words, the light guide unit 170 may minimize the amount of light lost in the process of reflecting light incident through the light input unit 171. For example, when the area ratio of the light emitting area OA to the light emitting area EA is remarkably small, the display device 100 that does not include the light guide unit 170 may have a significantly reduced light emission efficiency. Accordingly, even if the area ratio of the light emitting area OA to the light emitting area EA is significantly small, the display device 100 according to the present application can prevent the light emission efficiency from being reduced by using the light guide unit 170. .

As a result, the display device 100 according to the present application can reduce the external light reflectance by arranging the light blocking layer LS in the remaining display area AA except for the light emitting area OA having a small area. At the same time, the display device 100 according to the present application may improve light emission efficiency by focusing light generated from the light emitting element E through the light guide unit 170 into the light exit area OA.

According to an example, the shape of the light exit portion 173 of the light guide portion 170 may have a square shape or a circular shape. For example, the shape of the light exit portion 173 of the light guide portion 170 may have a circular shape as illustrated in FIG. 3. The light exit part 173 of the light guide part 170 may have a shape corresponding to the light exit area OA disposed in the light emission area EA. That is, when the light exit area OA has a circle shape, the shape of the light exit part 173 of the light guide unit 170 may have a circle at a position corresponding to the light exit area OA. However, it is not necessarily limited to this.

For another example, the shape of the light exit portion 173 of the light guide portion 170 may have a rectangle as illustrated in FIG. 5. When the light exit area OA has a rectangle, the shape of the light exit part 173 of the light guide unit 170 may also have a rectangle at a position corresponding to the light exit area OA.

Meanwhile, each of the sub-pixels SP1, SP2, SP3, and SP4 may include one light guide unit 170 as illustrated in FIGS. 3 and 5. Specifically, one light guide unit 170 is disposed in the first sub-pixel SP1, the other light guide unit 170 is disposed in the second sub-pixel SP2, and the third sub-pixel SP3 is ), another light guide unit 170 is disposed, and the fourth sub-pixel SP4 may be another light guide unit 170. However, it is not necessarily limited to this.

One pixel P may include one light guide unit 170 as illustrated in FIG. 6. Specifically, the first, second, third, and fourth sub-pixels SP1, SP2, SP3, and SP4 may be provided with one light guide unit 170. In the case of forming one light guide unit 170 in one pixel P as shown in FIG. 6, it is not necessary to form the light guide unit 170 for each sub-pixel SP1, SP2, SP3, SP4. Difficulty may be lowered.

On the other hand, when forming the light guide unit 170 for each sub-pixel (SP1, SP2, SP3, SP4) as shown in Figures 3 and 5, the difficulty of the process is high, but for each sub-pixel (SP1, SP2, SP3, SP4) The area of the light exit area OA may be formed differently. Each of the sub-pixels SP1, SP2, SP3, and SP4 may be designed to have an area of the light exit area OA so that light of a main wavelength band can be best extracted.

The color filter CF may overlap the at least one light exit area OA. The at least one color filter CF may be disposed to correspond to each of the at least one light exit area OA. Specifically, the color filter CF may be inserted into the opening OP of the first light blocking layer LS1. That is, the color filter CF may be disposed in the light exit area OA on the same layer as the first light blocking layer LS1. All of the light emitted from the light exit unit 173 of the light guide unit 170 may pass through the color filter CF. The color filter CF is disposed to correspond to the at least one light emitting area OA, so that light emitted from the light emitting element E is converted into light of a different color or only some of the light emitted from the light emitting element E is transmitted. You can. For example, the color filter CF may include a red color filter, a green color filter, and a blue color filter. The first sub-pixel SP1 may include a red color filter. The red color filter is disposed to correspond to the light exit area OA, and transmits only red light among the light emitted from the light emitting element E. The second sub-pixel SP2 may include a green color filter. The green color filter is disposed to correspond to the light exit area OA, and transmits only green light among the light emitted from the light emitting element E. The third sub-pixel SP3 may include a blue color filter. The blue color filter is disposed to correspond to the light exit area OA, and transmits only blue light among the light emitted from the light emitting element E. The fourth sub-pixel SP4 may be implemented without a color filter.

The encapsulation layer 180 may be formed to cover the light emitting device E. The encapsulation layer 180 may prevent oxygen or moisture from penetrating the light emitting device E.

7 is a diagram illustrating a path in which light is emitted and a path in which external light is reflected or absorbed in the display device of FIG. 4. Specifically, FIG. 7A is a view for explaining a path through which light generated by the light emitting element E is emitted, and FIG. 7B shows that external light is absorbed by the first light blocking layer LS1 or reflected by the light emitting element E It is a diagram for explaining the route to be made.

In FIG. 7A, the first and second lights L1 and L2 generated in the light emitting element E are incident on the light incident portion 171 of the light guide portion 170, and the light guide portion 170 and the cathode electrode ( CE) can be guided to the light exit unit 173. When the display device 100 is a lower emission method, the cathode electrode CE may be made of a metal material having high reflectivity such as aluminum (Al), silver (Ag), and Ag alloy.

For example, the first light L1 is generated by the light emitting element E and may be incident on the light incident portion 171 of the light guide portion 170. The first light L1 incident on the light incident portion 171 may be reflected by one side of the light guide portion 170 and proceed to the light emitting element E. In addition, the first light L1 is reflected by the cathode electrode CE of the light emitting element E and can proceed to the other side of the light guide unit 170. Also, the first light L1 may be reflected by the other side of the light guide unit 170 and guided to the light exit unit 173 of the light guide unit 170. Lastly, the first light L1 may pass through the color filter CF connected to the light exit unit 173 of the light guiding unit 170, and colored light according to the color filter CF may be output. .

In addition, the second light L2 may be generated by the light emitting element E and may be incident on the light incident portion 171 of the light guide portion 170. The second light L1 incident on the light incident portion 171 may be reflected by the other side of the light guide portion 170 and proceed to one side of the light guide portion 170. In addition, the second light L2 is reflected by one side of the light guide part 170 and can be guided to the light exit part 173 of the light guide part 170. Finally, the second light L2 may pass through the color filter CF connected to the light exit unit 173 of the light guide unit 170, and colored light according to the color filter CF may be output.

As such, the light guide unit 170 may concentrate light incident through the light input unit 171 to the light output unit 173. Therefore, even if the area ratio of the light emitting area OA to the light emitting area EA is remarkably small, the display device 100 has a level of light emitted to the light emitting area OA substantially equal to the amount of light generated in the light emitting area EA. You can focus the light to keep it. That is, the display device 100 may minimize the amount of light lost in the process of reflecting light incident through the light input unit 171. As a result, the display device 100 according to the present application may include a light guide unit 170 to prevent a decrease in luminous efficiency.

In FIG. 7B, light incident from the outside may be absorbed by the first light blocking layer LS1 or may be reflected by the light emitting element E.

For example, the third light L3 may be incident from the outside to reach the first light blocking layer LS1. In addition, the third light L3 is absorbed by the first light blocking layer LS1, and thus may not be reflected by the first light blocking layer LS1.

Further, the fourth light L4 may be incident from the outside and pass through the color filter CF disposed in the opening OP of the first light blocking layer LS1. The fourth light L4 passing through the color filter CF may have a color according to the color vector CF, and may reach the light emitting element E. In addition, the fourth light L4 may be reflected by the cathode electrode CE of the light emitting element E and emitted again through the color filter CF. At this time, the fourth light L4 finally emitted may pass through the color filter CF twice, thereby reducing the amount of light.

As such, the first light blocking layer LS1 may cover the emission area EA except for the light exit area OA. Therefore, the first light-blocking layer LS1 can minimize the exposed area of the light emitting device E with respect to the light exit direction, and light incident from the outside in the area except the light exit area OA is emitted by the light emitting device E. It can prevent reflection. Also, the first light blocking layer LS1 may prevent light incident from the outside from being reflected by the light guide unit 170. As a result, the display device according to the present application can reduce the area ratio of the light emitting area OA to the light emitting area EA to reduce external light reflectivity and improve reflection visibility.

8 is a second embodiment of a cross-sectional view taken along line I-I of FIG. 3;

Referring to FIG. 8, the light incident portion 171 of the light guide portion 170 may be spaced apart from the light emitting element E by a predetermined distance (d). Specifically, a portion 160a of the planarization layer 160 is formed on the circuit area CA, and is formed on the first light blocking layer LS1 so that the light guide unit 170 is inserted in the light emitting area EA. You can make room for it. That is, a portion 160a of the planarization layer 160 provided on the first light blocking layer LS1 may serve as a frame for the light guide unit 170 to be disposed. At this time, the height of the planarization layer 160 formed on the first light blocking layer LS1 may be lower than the height of the planarization layer 160 formed on the circuit area CA. For example, the height of the planarization layer 160 formed on the circuit area CA is the height of the planarization layer 160 formed on the first light blocking layer LS1 and the light incident portion 171 of the light guide portion 170. It may correspond to the sum of the thickness d of the distance between the light incident element 171 and the light emitting element E. In addition, when the light guide unit 170 is disposed on a portion 160a of the planarization layer 160, the other portion 160b of the planarization layer 160 is planarized so that the upper surface of the planarization layer 160 is flattened ( 170). That is, the portion 160a of the planarization layer 160 formed first in the circuit region CA and the other portion 160b of the planarization layer 160 formed later in the emission region EA may provide a flattened top surface.

Accordingly, the light incident portion 171 of the light guide portion 170 may not be in direct contact with the light emitting element E, or damage that may occur due to direct contact between the light guide portion 170 and the light emitting element E or Damage can be prevented.

In addition, it is possible to minimize the light lost in the light incident portion 171 of the light guide portion 170. Specifically, the light guide unit 170 may have a funnel shape as shown in FIG. 5. The light incident portion 171 of the light guide portion 170 has a very small slope. When there is no separation distance between the light guide unit 170 and the light emitting element E, the number of reflections between the light guide unit 170 and the cathode electrode CE is reflected to the light incident on the light incident unit 171 having a small inclination. As it increases, some may be lost. The display device 100 according to the second embodiment of the present application may reduce the number of reflections of light incident on the light incident portion 171 having a small inclination by separating the light guide portion 170 from the light emitting element E. .

In addition, the distance d between the light incident portion 171 of the light guide portion 170 and the light emitting element E may be adjusted to make the light generated from the light emitting element E enter the light guide portion 170 as much as possible. Can.

9 is a third embodiment of a cross-sectional view taken along line I-I of FIG. 3;

Referring to FIG. 9, the vertical cross-section of the light guide unit 170 may have a diagonal shape. For example, the light guide portion 170 may have a conical truncated shape in which the width W decreases as the light guide portion 171 goes from the light input portion 171 to the light output portion 173. Light incident on the light incident portion 171 of the light guide portion 170 may be reflected by the light guide portion 170 and the cathode electrode CE and guided to the light exit portion 173. The light guide unit 170 may concentrate the light so as to maintain the light amount emitted through the light exit unit 173 at a level substantially equal to the amount of light incident through the light input unit 171. The light guide unit 170 may minimize the amount of light lost in the process of reflecting light incident through the light input unit 171. In addition, when the light guide unit 170 has a truncated cone shape, light is lost in the light input unit 171 because the inclination in the light input unit 171 is greater than when the light guide unit 170 has a funnel shape. Can be prevented.

10 is a fourth embodiment of a cross-sectional view taken along line I-I of FIG. 3;

Referring to FIG. 10, the vertical cross-section of the light guide unit 170 may have a convex curved shape toward the light exit unit 173. For example, the light guide portion 170 may have a hemispherical shape in which the width W decreases and the inclination decreases from the light input portion 171 to the light output portion 173. Light incident on the light incident portion 171 of the light guide portion 170 may be reflected by the light guide portion 170 and the cathode electrode CE and guided to the light exit portion 173. The light guide unit 170 may concentrate the light so as to maintain the light amount emitted through the light exit unit 173 at a level substantially equal to the amount of light incident through the light input unit 171. The light guide unit 170 may minimize the amount of light lost in the process of reflecting light incident through the light input unit 171. Therefore, even if the area ratio of the light emitting area OA to the light emitting area EA is remarkably small, the light guide unit 170 can prevent a decrease in light emission efficiency.

11 is a graph illustrating light emission efficiency according to a structure of a light guide unit in a display device according to an example of the present application.

Specifically, the first structure illustrated by a dotted line corresponds to a display device including the first light blocking layer LS1 and does not include the light guide unit 170, and the second structure illustrated by a dashed-dotted line (Structure 2) corresponds to the display device 100 illustrated in FIG. 10, and the third structure (Structure 3) illustrated by a dashed line corresponds to the display device 100 illustrated in FIG. 9, and is illustrated by a solid line The fourth structure (Structure 4) corresponds to the display device 100 illustrated in FIG. 4.

That is, the display device of the first structure (Structure 1) does not include the light guide portion 170, the display device 100 of the second structure (Structure 2) has a hemispherical shape, the light guide portion 170, In the display device 100 of the third structure (Structure 3), the light guide unit 170 has a conical shape, and in the display device 100 of the fourth structure (Structure 4), the light guide unit 170 has a funnel shape. Have In addition, it is assumed that the structures of the first to fourth structures are the same except for the configuration of the light guide unit 170. In addition, the horizontal axis of the graph shown in FIG. 11 represents the wavelength, and the vertical axis represents the relative value of Luminous Efficiency.

Referring to FIG. 11, the display device 100 of the fourth structure is more luminous efficiency than the first to third structures (Structure 1, Structure 2, Structure 3) at a wavelength of 550 nm. This can be high. In addition, the display device 100 of the fourth structure (Structure 4) may have an average emission efficiency at a wavelength of 380 nm to 780 nm higher than the first to third structures (Structure 1, Structure 2, Structure 3). In addition, the display device 100 of the third structure (Structure 3) may have an average emission efficiency at a wavelength of 380 nm to 780 nm higher than the first and second structures (Structure 1, Structure 2). Finally, the display device 100 of the second structure (Structure 2) may have an average emission efficiency at a wavelength of 380 nm to 780 nm higher than the first structure (Structure 1).

Therefore, when the light guide portion 170 has a funnel shape, the path of light is shorter than the case where the light guide portion 170 has a truncated cone shape, and the number of reflections by the light guide portion 170 and the cathode electrode CE The light emitting efficiency of the display device 100 may be improved by decreasing.

In addition, when the light guide unit 170 has a truncated cone shape, the light emission efficiency of the display device 100 may be improved compared to the case where the light guide unit 170 has a hemisphere shape.

12 is a fifth embodiment of a cross-sectional view taken along line I-I of FIG. 3;

Referring to FIG. 12, the color filter CF may be additionally disposed on one surface of the first light blocking layer LS1 overlapping with the light emitting area EA. Specifically, the color filter CF may be disposed on the passivation layer 150 to overlap the emission area EA. In addition, the first light blocking layer LS1 may be disposed to overlap the emission area EA on the color filter CF. The first light blocking layer LS1 may include an opening OP to form at least one light emitting area OA overlapping the light emitting area EA. Also, a part of the color filter CF may be inserted into the opening OP and disposed on the same layer as the first light blocking layer LS1.

In addition, the light guide unit 170 may be disposed between the light emitting element E and the first light blocking layer LS1. The light guide unit 170 is disposed so that the light incident unit 171 faces the light emitting element E, and light generated from the light emitting element E may be incident. The light guide portion 170 is disposed such that the light exit portion 173 faces the first light blocking layer LS1, and in particular, overlaps the opening OP of the first light blocking layer LS1, that is, the light exit region OA. It can be arranged as much as possible. The light guide unit 170 may emit light to the outside through the light exit unit 173. Therefore, the light guide unit 170 may guide light emitted from the light emitting element E to the light exit area EA.

In addition, the first light-blocking layer LS1 and the color filter CF are disposed to overlap the light guide unit 170 based on the light exit direction, thereby blocking light incident on the light guide unit 170 from the outside to block external light. It is possible to further prevent reflection of the light guide portion 170.

13 is a sixth embodiment of a cross-sectional view taken along line I-I of FIG. 3;

Referring to FIG. 13, the first light blocking layer LS1 may be disposed in the circuit area CA as well as the emission area EA.

The first light blocking layer LS1 may be a material that absorbs light, for example, an organic layer including black dye. In this case, the first light blocking layer LS1 may be disposed in the circuit area CA to planarize the top of the thin film transistor T. In this case, the first light blocking layer LS1 may include a contact hole through which the anode electrode AE passes. That is, the first light blocking layer LS1 may simultaneously function as the light blocking role in the circuit area CA as well as the planarization layer 160.

In addition, the first light blocking layer LS1 may be disposed in the emission area EA to have at least one opening OP. The at least one opening OP of the first light blocking layer LS1 may correspond to at least one light exit area OA. Unlike the first light-blocking layer LS1 shown in FIG. 4, the first light-blocking layer LS1 of FIG. 13 is covered from the side of the light-exiting portion 173 of the light guide portion 170 to the side of the light-emitting portion 171. It can be formed to a sufficient thickness.

The first light blocking layer LS1 is formed in the circuit area CA and is formed in the light emission area EA to provide a space for the light guide unit 170 to be inserted. That is, the first light blocking layer LS1 may serve as a frame for the light guide unit 170 in the emission area EA.

When the light guide unit 170 is disposed on the first light blocking layer LS1, the planarization layer 160 may be formed on the light guide unit 170 so that the top surface is flattened. In this case, the first light blocking layer LS1 and the planarization layer 160 may provide a planarized top surface.

In the display device 100 according to the sixth exemplary embodiment of the present application, one configuration, that is, the first light blocking layer LS1 may simultaneously serve as a light blocking role and a flattening role. The display device 100 according to the sixth embodiment of the present application has a simple structure, and accordingly, the process can be simplified.

14 is a seventh embodiment of a cross-sectional view taken along line I-I of FIG. 3;

3 to 5 and 8 to 13, the display device 100 is implemented in a lower emission method, but is not limited thereto. The display device 100 may also be embodied by an upper emission method.

Referring to FIG. 14, the display device 100 implemented by the upper emission method includes a first substrate 111, a second substrate 112, a buffer layer 120, a thin film transistor T, a gate insulating layer 130, and an interlayer The insulating layer 140, the passivation layer 150, the first planarization layer 160, the light emitting device E, the bank B, the light blocking layer LS, the light guide portion 170, the second planarization layer 190 And a color filter (CF). The display device 100 may further include an encapsulation layer 180.

The first substrate 111, the second substrate 112, the buffer layer 120, the thin film transistor T, the gate insulating film 130, the interlayer insulating film 140, the passivation layer 150, the light emitting device shown in FIG. 14 (E), since the bank (B) and the encapsulation layer 180 are substantially the same as those shown in FIG. 4, a detailed description thereof will be omitted.

Hereinafter, only the first planarization layer 160, the light blocking layer LS, the light guide unit 170, and the color filter CF will be described in detail, and the planarization layer 160 and the light blocking layer (illustrated in FIG. 4) The difference between the LS), the light guide unit 170, and the color filter CF will be mainly described. Redundant description will be omitted.

The first planarization layer 160 may be disposed on the first substrate 111 and cover the thin film transistor T disposed in the circuit area CA. Specifically, the planarization layer 160 is provided on the passivation layer 150 to planarize the top of the thin film transistor T. Also, the planarization layer 160 may include a contact hole through which the anode electrode AE passes. Here, the contact hole of the planarization layer 160 may be connected to the contact hole of the passivation layer 150 in order to penetrate the anode electrode AE. Unlike the planarization layer 160 illustrated in FIG. 4, the first planarization layer 160 does not include the light guide unit 170 therein.

The second planarization layer 190 may be disposed on the encapsulation layer 180. The second planarization layer 190 may have a light guide portion 170 inserted therein, and fill a step generated by the light guide portion 170 to flatten the top surface.

The light blocking layer LS may include a first light blocking layer LS1 and a second light blocking layer LS2.

The first light blocking layer LS1 may be disposed between the light emitting device E and the second substrate 112. Specifically, the first light blocking layer LS1 may be disposed on the second planarization layer 190.

The first light blocking layer LS1 is disposed in the display area AA and may have at least one opening OP. In this case, at least one opening OP of the first light blocking layer LS1 may correspond to at least one light exit area OA. The first light blocking layer LS1 may include an opening OP, thereby forming at least one light emitting area OA in the light emitting area EA. The first light blocking layer LS1 may be disposed in a remaining area except for at least one light emitting area OA of the display area AA.

According to an example, the first light blocking layer LS1 may include a light blocking material or a light absorbing material. The first light blocking layer LS1 overlaps the light guide unit 170 to prevent external light from being reflected by the light guide unit 170. Specifically, the light guide unit 170 is made of a material that reflects light to guide the light emitted from the light emitting device E to the light exit area OA. Accordingly, the first light-blocking layer LS1 covers the light guide unit 170 based on the light exit direction, thereby blocking light incident on the light guide unit 170 and reflecting external light to the light guide unit 170. Can be prevented. Accordingly, the first light-blocking layer LS1 can reduce the external light reflectance of the display device 100 to improve the reflection visibility, reduce power consumption, and improve luminance. In addition, the first light-blocking layer LS1 may prevent light emitted from each of the plurality of light-emitting elements E from being mixed with each other, thereby improving light leakage and deterioration in luminescence.

According to an example, the area of the light exit area OA may be smaller than the area of the light emission area EA. Specifically, a portion of the emission area EA may overlap the first light blocking layer LS1, and another portion of the emission area EA may overlap the opening OP of the first light blocking layer LS1. . In this case, the opening OP of the first light blocking layer LS1 may correspond to the light exit area EA. Therefore, the area of the light emitting area OA may be smaller than the area of the light emitting area EA, and the external light reflectivity of the display device 100 may be determined according to the area ratio of the light emitting area OA to the light emitting area EA. have.

According to an example, as the area ratio of the light emitting area OA to the light emitting area EA is small, the external light reflectivity of the display device 100 may decrease. Specifically, the light emitting element E can generate light and reflect external light. For example, the larger the exposed area of the light emitting element E with respect to the light exit direction, the better the luminous efficiency can be, but the external light reflectance can also be increased at the same time, and the reflection visibility can be deteriorated. Accordingly, the display device 100 according to the present application covers the light emitting area EA excluding the light emitting area OA with the first light blocking layer LS1, thereby minimizing the exposed area of the light emitting device E in the light output direction. It is possible to reduce the external light reflectance and improve the reflection visibility. In addition, since the display device according to the present application can reduce external light reflectance through the first light-blocking layer LS1, a separate polarization layer or a polarization conversion layer may not be provided, and high manufacturing is provided to provide the polarization layer. It can solve costly problems. In addition, the display device 100 according to the present application may include a light guide unit 170 to prevent a decrease in luminous efficiency due to a decrease in the area ratio of the light emitting area OA to the light emitting area EA.

The second light blocking layer LS2 may be disposed on the first substrate 111 so as to overlap the thin film transistor T. The second light blocking layer LS may be disposed in the circuit region CA in which the thin film transistor T is disposed. The second light blocking layer LS2 may be disposed on the top surface of the first substrate 111. For example, the second light blocking layer LS2 may be formed by depositing a metal on the first substrate 111 and performing exposure patterning.

According to an example, the display device 100 may be disposed in the display area AA excluding the light emitting area OA through the first light blocking layer LS1 and the circuit area (through the second light blocking layer LS2) CA). Therefore, the display device 100 according to the present application is disposed on the remaining display area AA except for the light exit area OA through the first and second light blocking layers LS1 and LS2, thereby minimizing external light reflectivity and It can improve the reflection visibility.

The light guide unit 170 may guide light emitted from the light emitting device E to at least one light emitting area OA. The light guide unit 170 may be disposed between the second substrate 112 and the light emitting element E. Specifically, the light guide portion 170 may be disposed on the same layer as the second planarization layer 190. The light guide part 170 may be inserted into the second planarization layer 190 so as to overlap with the rest of the light emitting area EA except for the light emitting area OA. For example, a portion 190a of the second planarization layer 190 is formed in the circuit area CA and is also formed in the emission area EA to provide a space for the light guide unit 170 to be inserted. A portion 190a of the second planarization layer 190 formed in the emission area EA may serve as a frame for the light guide portion 170 to be disposed. At this time, the height of the portion 190a of the second planarization layer 190 may correspond to the height of the light guide portion 170. Then, when the light guide portion 170 is disposed on a portion 190a of the second planarization layer 190, the other portion 190b of the second planarization layer 190 has an upper surface of the second planarization layer 190. The light guide portion 170 may be covered to be flat. That is, a portion 190a of the second planarization layer 190 formed first in the circuit region CA and another portion 190b of the second planarization layer 190 formed later in the emission region EA provide a flattened top surface. can do.

The light guide unit 170 may include a light input unit 171 through which light generated from the light emitting element E is incident and a light output unit 173 through which the incident light is emitted.

The distance between the light guide unit 170 and the light emitting element E may increase as the light guide unit 170 moves from the light input unit 171 to the light output unit 173. When the display device 100 is of the upper emission type, the light guide unit 170 is configured such that the light input unit 171 faces the first substrate 111 and the light output unit 173 faces the second substrate 112. Arranged, light generated from the light emitting element E may be emitted to the outside through the second substrate 112.

The color filter CF may be disposed between the light emitting element E and the second substrate 112. Specifically, the color filter CF may overlap the at least one light emitting area OA on the second planarization layer 190. The at least one color filter CF may be disposed to correspond to each of the at least one light exit area OA.

The color filter CF may be inserted into the opening OP of the first light blocking layer LS1. That is, the color filter CF may be disposed in the light exit area OA on the same layer as the first light blocking layer LS1. All of the light emitted from the light exit unit 173 of the light guide unit 170 may pass through the color filter CF. The color filter CF is disposed to correspond to the at least one light emitting area OA, so that light emitted from the light emitting element E is converted into light of a different color or only some of the light emitted from the light emitting element E is transmitted. You can.

When the display device 100 is an upper emission type, the first light blocking layer LS1, the light guide unit 170, the second flattening layer 190, and the second substrate 112 on which the color filter CF is formed are remaining Components may be bonded to the formed first substrate 111.

Alternatively, the second planarization layer 190, the light guide unit 170, the first light blocking layer LS1 and the color filter CF on the first substrate 111 on which the light emitting device E and the encapsulation layer 180 are formed. ) May be formed. Thereafter, the second substrate 112 may be adhered to the first light blocking layer LS1 and the color filter CF.

15 is a diagram illustrating a path in which light is emitted and a path in which external light is reflected or absorbed in the display device of FIG. 14. Specifically, FIG. 15A is a view for explaining a path through which light generated by the light emitting element E is emitted, and FIG. 15B shows that external light is absorbed by the first light blocking layer LS1 or reflected by the light emitting element E It is a diagram for explaining the route to be made.

In FIG. 15A, the first and second lights L1 and L2 generated in the light emitting element E are incident on the light incident portion 171 of the light guide portion 170, and the light guide portion 170 and the anode electrode ( It may be reflected by AE) and guided to the light exit unit 173. When the display device 100 is an upper emission method, the anode electrode AE of the light emitting element E may be made of a metal material having high reflectivity such as aluminum (Al), silver (Ag), or Ag alloy.

For example, the first light L1 is generated by the light emitting element E and may be incident on the light incident portion 171 of the light guide portion 170. The first light L1 incident on the light incident portion 171 may be reflected by one side of the light guide portion 170 and proceed to the light emitting element E. In addition, the first light L1 is reflected by the anode electrode AE of the light emitting element E and may proceed to the other side of the light guide unit 170. Also, the first light L1 may be reflected by the other side of the light guide unit 170 and guided to the light exit unit 173 of the light guide unit 170. Lastly, the first light L1 may pass through the color filter CF connected to the light exit unit 173 of the light guiding unit 170, and colored light according to the color filter CF may be output. .

In addition, the second light L2 may be generated by the light emitting element E and may be incident on the light incident portion 171 of the light guide portion 170. The second light L1 incident on the light incident portion 171 may be reflected by one side of the light guide portion 170 and proceed to the other side of the light guide portion 170. In addition, the second light L2 is reflected by one side of the light guide part 170 and can be guided to the light exit part 173 of the light guide part 170. Finally, the second light L2 may pass through the color filter CF connected to the light exit unit 173 of the light guide unit 170, and colored light according to the color filter CF may be output.

As such, the light guide unit 170 may concentrate light incident through the light input unit 171 to the light output unit 173. Therefore, even if the area ratio of the light emitting area OA to the light emitting area EA is remarkably small, the display device 100 has a level of light emitted to the light emitting area OA substantially equal to the amount of light generated in the light emitting area EA. You can focus the light to keep it. That is, the display device 100 may minimize the amount of light lost in the process of reflecting light incident through the light input unit 171. As a result, the display device 100 according to the present application may include a light guide unit 170 to prevent a decrease in luminous efficiency.

15B, the third and fourth lights L3 and L4 incident from the outside may be absorbed by the first light blocking layer LS1 or reflected by the light emitting element E.

For example, the third light L3 may be incident from the outside to reach the first light blocking layer LS1. In addition, the third light L3 is absorbed by the first light blocking layer LS1, and thus may not be reflected by the first light blocking layer LS1.

Further, the fourth light L4 may be incident from the outside and pass through the color filter CF disposed in the opening OP of the first light blocking layer LS1. The fourth light L4 passing through the color filter CF may have a color according to the color vector CF, and may reach the light emitting element E. In addition, the fourth light L4 may be reflected by the anode electrode AE of the light emitting element E, and again emitted through the color filter CF. At this time, the fourth light L4 finally emitted may pass through the color filter CF twice, thereby reducing the amount of light.

As such, the first light blocking layer LS1 may cover the display area AA excluding the light exit area OA. Accordingly, the first light-blocking layer LS1 may minimize the exposed area of the light emitting element E with respect to the light exit direction, and light incident from the outside in the display area AA excluding the light exit area OA may be the light emitting device ( It is possible to prevent reflection by E). Also, the first light blocking layer LS1 may prevent light incident from the outside from being reflected by the light guide unit 170. As a result, the display device according to the present application can reduce the area ratio of the light emitting area OA to the light emitting area EA to reduce external light reflectivity and improve reflection visibility.

Meanwhile, FIGS. 3 to 5 and 8 to 14 illustrate that one light guide unit 170 is disposed in one sub-pixel, but is not limited thereto. A plurality of light guide parts 170 may be disposed in one sub-pixel. Hereinafter, it will be described with reference to FIGS. 16 and 17.

FIG. 16 is another example of a top view of the pixel of FIG. 2, and FIG. 17 is an embodiment of a cross-sectional view of the cutting line II-II of FIG.

Referring to FIG. 16, pixels P having a circuit area CA and a light emission area EA may be formed in the display area AA of the display device 100. Each of the pixels P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3 and a fourth sub-pixel SP4. The first sub-pixel SP1 emits red light, the second sub-pixel SP2 emits green light, the third sub-pixel SP3 emits blue light, and the fourth sub-pixel SP4 is It may be provided to emit white light, but is not limited thereto. The arrangement order of each sub-pixel SP1, SP2, SP3, SP4 can be variously changed.

Each sub-pixel SP1, SP2, SP3, and SP4 may include a light emitting area EA and a plurality of light emitting areas OA. The light emitting region EA corresponds to a region where the light emitting element E generates light, and the plurality of light emitting regions OA corresponds to a region that emits light emitted from the light emitting element E to the outside.

Specifically, the first sub-pixel SP1 may include a first emission area EA1 and a plurality of first emission areas OA1 disposed in the first emission area EA1. The second sub-pixel SP2 may include a second emission area EA2 and a plurality of second emission areas OA2 disposed in the second emission area EA2. The third sub-pixel SP3 may include a third emission area EA3 and a plurality of third emission areas OA3 disposed in the third emission area EA3. The fourth sub-pixel SP4 may include a fourth emission area EA4 and a plurality of fourth emission areas OA4 disposed in the fourth emission area EA4.

Referring to FIG. 17, the display device 100 includes a first substrate 111, a second substrate 112, a buffer layer 120, a thin film transistor T, a gate insulating film 130, an interlayer insulating film 140, and passivation It includes a layer 150, a planarization layer 160, a light emitting element (E), a bank (B), a light blocking layer (LS), a light guide unit 170, and a color filter (CF). The display device 100 may further include an encapsulation layer 180.

The first substrate 111, the second substrate 112, the buffer layer 120, the thin film transistor T, the gate insulating film 130, the interlayer insulating film 140, the passivation layer 150, the planarization layer shown in FIG. 17 Since the 160, the light emitting element E, the bank B, and the encapsulation layer 180 are substantially the same as those shown in FIG. 4, a detailed description thereof will be omitted.

Hereinafter, only the light blocking layer LS, the light guide unit 170, and the color filter CF will be described in detail, and the light blocking layer LS, the light guide unit 170, and the color filter shown in FIG. 4 ( CF). Redundant description will be omitted.

The light blocking layer LS may include a first light blocking layer LS1 disposed in the emission area EA and a second light blocking layer LS2 disposed in the circuit area CA. The first light blocking layer LS1 may include a plurality of openings OP formed in one emission area EA.

According to an example, the first light blocking layer LS1 is disposed in one emission area EA, and may have first to third openings OP1, OP2, and OP3. The first to third openings OP1, OP2, and OP3 of the first light blocking layer LS1 may correspond to the first to third light exit regions OA1, OA2, and OA3. The first light blocking layer LS1 includes first to third openings OP1, OP2, and OP3, thereby providing first to third light emitting areas OA1, OA2, and OA3 in one light emitting area EA. Can form. As a result, the first light blocking layer LS1 may be disposed in the remaining light emitting areas EA except for the first to third light emitting areas OA1, OA2, and OA3.

A plurality of light guide units 170 may be formed in one light emitting area EA to guide the light emitted from the light emitting device E to the plurality of light emitting areas OA. Specifically, the light guide unit 170 is a first to third light guide unit 170a, which guides the light emitted from the light emitting element E to each of the first to third light exit regions OA1, OA2, and OA3, respectively. 170b, 170c). At this time, the first to third light emitting areas OA1, OA2, and OA3 may be disposed in one light emitting area EA.

Each of the first to third light guide units 170a, 170b, and 170c may be inserted into the planarization layer 160 to correspond to the first to third light exit regions OA1, OA2, and OA3, respectively. Further, the light incident portions 171a, 171b, and 171c of each of the first to third light guide portions 170a, 170b, and 170c may incident light generated from one light emitting element E. That is, the light generated from the light emitting element E is the first to third light guide parts 170a through the light input parts 171a, 171b, and 171c of the first to third light guide parts 170a, 170b, and 170c, respectively. , 170b, 170c). Light incident on each of the first to third light guide units 170a, 170b, and 170c is made through the light exit units 173a, 173b, and 173c of the first to third light guide units 170a, 170b, and 170c. The first to third light guide units 170a, 170b, and 170c may be emitted outside.

According to an example, the shapes of the light incident portions 171a, 171b, and 171c of the first to third light guide portions 170a, 170b, and 170c may have polygons. For example, the shapes of the light incident portions 171a, 171b, and 171c of the first to third light guide portions 170a, 170b, and 170c may have a hexagonal shape as illustrated in FIG. 14. In this case, the number of light guide units 170 disposed in one emission area EA may be maximized. In addition, a separation space may not occur between the plurality of light guide parts 170 disposed in one emission area EA. When a separation space is generated between the plurality of light guide parts 170 disposed in one emission area EA, light entering the separation space cannot be emitted to the exit area OA, so that light efficiency is reduced. Can. In the present application, by forming the shape of the light incident portion 171 of the light guide portion 170 in a hexagonal shape, a space between the plurality of light guide portions 170 disposed in one light emitting area EA is not generated. Can. Accordingly, the present application can minimize the loss of light generated in the light emitting device (E).

According to an example, each of the light exit portions 173a, 173b, and 173c of the first to third light guide portions 170a, 170b, and 170c may have a smaller area than the light input portions 171a, 171b, and 171c.

According to an example, the shapes of the light exit portions 173a, 173b, and 173c of the first to third light guide portions 170a, 170b, and 170c may have a square shape or a circular shape. For example, the shapes of the light exit portions 173a, 173b, and 173c of the first to third light guide portions 170a, 170b, and 170c may have a circular shape as illustrated in FIG. 14. The light exit portions 173a, 173b, and 173c of the first to third light guide portions 170a, 170b, and 170c include first to third light emission regions OA1, OA2, and OA3 disposed in the emission region EA. It may have a corresponding shape. That is, when the first to third light exit areas OA1, OA2, and OA3 have a circular shape, the shapes of the light exit parts 173a, 173b, and 173c of the first to third light guide parts 170a, 170b, and 170c May have a circular shape at positions corresponding to the first to third light exit regions OA1, OA2, and OA3. However, it is not necessarily limited to this.

According to an example, the light incident parts 171a, 171b, and 171c of the first to third light guide parts 170a, 170b, and 170c may be spaced apart from the light emitting device E by a predetermined distance (d). Through this, it is possible to minimize the light lost in the light incident portion (171a, 171b, 171c) of the first to third light guide portion (170a, 170b, 170c). Specifically, the first to third light guide parts 170a, 170b, and 170c may have a funnel shape as illustrated in FIG. 17. The light incident portions 171a, 171b, and 171c of the first to third light guide portions 170a, 170b, and 170c have very low inclination. When there is no separation distance between the first to third light guide units 170a, 170b, 170c and the light emitting element E, the light entering the light entering units 171a, 171b, 171c having a small inclination is first to third As the number of reflections between the light guide units 170a, 170b, and 170c and the cathode electrode CE increases, some may be lost. The display device 100 according to the present application is spaced apart from the first to third light guide units 170a, 170b, 170c and the light emitting element E, so that the light entering units 171a, 171b, 171c having a small inclination are incident. The number of reflections of light can be reduced, and light efficiency can be improved.

The color filter CF may include first to third color filters CF1, CF2, and CF3 that overlap each of the first to third light exit areas OA1, OA2, and OA3. Specifically, the first color filter CF1 is inserted into the first opening OP1 of the first light blocking layer LS1 so as to overlap with the first light exit area OA, and the second color filter CF2 is the second light output The first light blocking layer LS1 is inserted into the second opening OP2 of the first light blocking layer LS1 so as to overlap the area OA2, and the third color filter CF3 overlaps the third light exit area OA3. It may be inserted into the third opening (OP3). Each of the first to third color filters CF1, CF2, and CF3 may be disposed in each of the first to third light exit regions OA1, OA2, and OA3 in the same layer as the first light blocking layer LS1.

Light emitted from the light exit units 173a, 173b, and 173c of the first to third light guide units 170a, 170b, and 170c may pass through each of the first to third color filters CF1, CF2, and CF3. have. The first to third color filters CF1, CF2, and CF3 may convert light emitted from the light emitting element E into light of a different color or transmit only a part of the light emitted from the light emitting element E. The color filter CF may include a red color filter, a green color filter, and a blue color filter. The first sub-pixel SP1 may include a red color filter. The red color filter is disposed to correspond to the light exit area OA, and transmits only red light among the light emitted from the light emitting element E. The second sub-pixel SP2 may include a green color filter. The green color filter is disposed to correspond to the light exit area OA, and transmits only green light among the light emitted from the light emitting element E. The third sub-pixel SP3 may include a blue color filter. The blue color filter is disposed to correspond to the light exit area OA, and transmits only blue light among the light emitted from the light emitting element E. The fourth sub-pixel SP4 may be implemented without a color filter.

Meanwhile, the first to third color filters CF1, CF2, and CF3 overlapping one emission area EA may be color filters of the same color. For example, when the first to third color filters CF1, CF2, and CF3 are disposed in the first sub-pixel SP1, the first to third color filters CF1, CF2, and CF3 are all red. It may be a color filter. Accordingly, the first sub-pixel SP1 may emit red light.

16 and 17, the display device 100 in which a plurality of light guide parts 170 are disposed in one light emitting area EA has one light guide part 170 in one light emitting area EA. ) May be thinner than the display device 100 on which it is disposed.

Specifically, the thickness of the planarization layer 160 may be determined according to the height H of the light guide portion 170. When one light guide unit 170 is disposed in one light emitting area EA, the distance from the light input unit 171 of the light guide unit 170 to the light output unit 173 is large. Accordingly, the height H of the light guide portion 170 increases, and the thickness of the planarization layer 160 increases. Meanwhile, when the plurality of light guide units 170 are disposed in one light emitting area EA, the distance from the light input unit 171 of the one light guide unit 170 to the light output unit 173 is reduced. Accordingly, the height H of the light guide portion 170 becomes small, and the thickness of the planarization layer 160 becomes small. As a result, the display device 100 in which a plurality of light guide parts 170 are disposed in one light emitting area EA is a display device in which one light guide part 170 is disposed in one light emitting area EA ( 100) The thickness may be thinner.

18 is a graph illustrating external light reflectivity according to an area ratio of an emission region to an emission region in a display device according to an example of the present application. Here, the horizontal axis of the graph shown in FIG. 18 represents the area ratio (OA/EA) of the light-emitting area OA to the light-emitting area EA, and the vertical axis indicates the external light reflectivity of the display device 100. Shows. In addition, in the graph illustrated in FIG. 18, when the area ratio (OA/EA) of the light emitting area OA to the light emitting area EA is 1, external light reflectivity of the display device not including the first light blocking layer Indicates. In addition, the graph illustrated in FIG. 18 represents external light reflectivity of the first light-blocking layer LS1 when the area ratio (OA/EA) of the light-emitting area OA to the light-emitting area EA is 0. .

Referring to FIG. 18, as the area ratio (OA/EA) of the light emitting area OA to the light emitting area EA is small, the external light reflectivity of the display device 100 may decrease. For example, if the area ratio (OA/EA) of the light-emitting area OA to the light-emitting area EA is 0.4 or more, the external light reflectivity may be 10% or more, and the light-emitting area OA to the light-emitting area EA If the area ratio (OA/EA) of) is 0.2 or less, the external light reflectance may be 8% or less. Accordingly, the display device 100 according to the present application covers the light emitting area EA excluding the light emitting area OA with the first light blocking layer LS1, thereby minimizing the exposed area of the light emitting device E in the light output direction. It is possible to reduce the external light reflectance and improve the reflection visibility. In addition, since the display device according to the present application can reduce external light reflectance through the first light-blocking layer LS1, a separate polarization layer or a polarization conversion layer may not be provided, and high manufacturing is provided to provide the polarization layer. It can solve costly problems. In addition, the display device 100 according to the present application may include a light guide unit 170 to prevent a decrease in luminous efficiency due to a decrease in the area ratio of the light emitting area OA to the light emitting area EA.

The present application described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which this application pertains that various substitutions, modifications, and changes are possible without departing from the technical details of the present application. It will be obvious to those who have the knowledge of Therefore, the scope of the present application is indicated by the claims to be described later, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted to be included in the scope of the present application.

100: display device
110: substrate 120: buffer layer
130: gate insulating film 140: interlayer insulating film
150: passivation layer 160: planarization layer
T: Thin film transistor E: Light emitting element
B: Bank LS1: 1st light-blocking layer
LS2: second light-blocking layer 170: light guide portion
CF: color filter
210: display driving circuit section 220: scan driving circuit section

Claims (27)

A substrate having a light emitting region;
A light emitting element disposed on the substrate in the light emitting region;
At least one light emitting area disposed in the light emitting area;
A light blocking layer disposed in the light emitting region and having an opening overlapping the at least one light emitting region; And
And a light guide portion disposed in the light emitting area and guiding light generated from the light emitting element to the at least one light emitting area. According to claim 1,
The light blocking layer overlaps the light guide portion, the display device. According to claim 1,
The light guide unit,
A light incident portion to which light generated from the light emitting element is incident; And
It includes a light output portion to which the light incident on the light incident portion is emitted,
The area of the light exit portion is smaller than the area of the light incident portion. According to claim 3,
The light output portion overlaps the opening of the light blocking layer, the display device, According to claim 3,
The width of the light guide portion, the display device is smaller in width from the light input portion to the light output portion. According to claim 3,
The light guide portion, the display device, the inclination increases from the light input portion to the light output portion. According to claim 3,
The light guide portion, the display device, the separation distance from the light-emitting element is increased from the light input portion to the light output portion. According to claim 3,
The light guide portion, the light input portion is spaced apart from the light emitting device, a display device. According to claim 1,
The light guide portion is made of a material that reflects light, a display device. According to claim 1,
And a color filter overlapping the opening of the light blocking layer. The method of claim 10,
The color filter is further disposed on one surface of the light blocking layer overlapping the light emitting area. According to claim 1,
Further comprising a planarization layer disposed between the substrate and the light emitting element,
The light guide portion is disposed on the same layer as the planarization layer, a display device. The method of claim 12,
The first light blocking layer is disposed on a lower surface of the planarization layer. The method of claim 12,
The planarization layer includes a first planarization layer disposed between the substrate and the light guide portion and a second planarization layer disposed between the light emitting element and the light guide portion,
The first planarization layer and the second planarization layer have different materials. The method of claim 12,
The first planarization layer is the light blocking layer. The method of claim 12,
A thin film transistor disposed between the substrate and the planarization layer; And
And a second light blocking layer covering the bottom surface of the thin film transistor. According to claim 1,
The light guide portion is disposed on the light emitting element, a display device. A first emission region and a second emission region in which the light emitting elements are disposed;
A light blocking layer disposed in each of the first and second light emitting regions and having at least one opening; And
And a light guide unit guiding light emitted from the light emitting element to exit through at least one opening of the light blocking layer. The method of claim 18,
The light guide unit,
A light incident portion to which light generated from the light emitting element is incident; And
It includes a light output portion to which the light incident on the light incident portion is emitted,
The light emitting portion overlaps an opening of the light blocking layer, the display device. The method of claim 19,
The area of the light exit portion is smaller than the area of the light incident portion. The method of claim 19,
A display device in which one light guide portion is disposed in each of the first and second light emitting regions. The method of claim 19,
A display device in which a plurality of light guide portions are disposed in each of the first and second light emitting regions. The method of claim 22,
A display device having a hexagonal cross section of the light guide portion of the light guide portion. The method of claim 22,
A display device having a square or circular cross section of the light exit portion of the light guide portion The method of claim 19,
A display device in which one light guide portion overlaps the first and second light emitting regions. The method of claim 19,
A display device in which the light guide portion of the light guide portion has the same cross-sectional shape and size as the opening of the light-shielding layer. The method of claim 19,
The light guide portion is spaced apart from the light emitting device, a display device.

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