Display device

Abstract

The invention provides a display device. The display device includes: a substrate; a transistor disposed on the substrate; a first electrode electrically connected to the transistor; a pixel defining layer disposed on the first electrode; a light emitting layer disposed in the opening of the pixel defining layer; a second electrode disposed on the light emitting layer; an encapsulation layer disposed on the second electrode; and a main light blocking layer and a sub-blocking layer disposed on the encapsulation layer, in which a first distance between an inner edge of the sub-blocking layer and an edge of the pixel defining layer satisfies Formula 1, and a second distance between an outer edge of the sub-blocking layer and the edge of the pixel defining layer satisfies Formula 2.

Description

Technical Field

[0001] This disclosure relates to a display device. Background Technology

[0002] Display devices are devices that display images, including liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs), or similar devices. These display devices are used in a variety of electronic devices, such as telephones, navigation systems, digital cameras, e-books, portable gaming devices, or other terminals. Summary of the Invention

[0003] This disclosure attempts to provide a display device capable of adjusting colors.

[0004] This disclosure provides a display device, comprising: a substrate; a transistor disposed on the substrate; a first electrode electrically connected to the transistor; a pixel defining layer disposed on the first electrode; a light-emitting layer disposed in an opening of the pixel defining layer; a second electrode disposed on the light-emitting layer; an encapsulation layer disposed on the second electrode; and a main light-blocking layer and a sub-blocking layer disposed on the encapsulation layer, wherein a first distance between the inner edge of the sub-blocking layer and the edge of the pixel defining layer satisfies Formula 1, and a second distance between the outer edge of the sub-blocking layer and the edge of the pixel defining layer satisfies Formula 2.

[0005] Formula 1 Formula 2 In the implementation method, in formula 1, θ a θ is the first angle of light emitted from the display device, and in Formula 2, θ b The second angle of light emitted from the display device is smaller than the first angle. In Formulas 1 and 2, N is the number of layers disposed between the pixel limiting layer and the main light blocking layer. In Formulas 1 and 2, d... n Determined by the following formula 3, and Formula 3 In formula 3, t n It is the thickness of the nth layer, and θ n It is determined by the following formula 4, and Formula 4 In formula 4, n n+1 The value is 1.

[0006] In this embodiment, the main light blocking layer and the sub-blocking layer can be spaced apart from each other, and the planar shape of the opening of the main light blocking layer and the planar shape of the sub-blocking layer can be circular.

[0007] In one implementation, the main light-blocking layer may surround the sub-blocking layer.

[0008] In an embodiment, the display device may define a red light-emitting area, a green light-emitting area, and a blue light-emitting area, and the sub-blocking layer may overlap with the red light-emitting area.

[0009] In an embodiment, the display device may define a red light-emitting area, a green light-emitting area, and a blue light-emitting area, and the sub-blocking layer may include at least one of a first sub-blocking layer overlapping the red light-emitting area, a second sub-blocking layer overlapping the green light-emitting area, and a third sub-blocking layer overlapping the blue light-emitting area.

[0010] In an implementation, the sub-blocking layer may include a first sub-blocking layer, a second sub-blocking layer, and a third sub-blocking layer.

[0011] In an implementation, the third distance from the far end of the pixel-defining layer to the inner edge of the first sub-blocking layer in the red light-emitting region can be less than the fourth distance from the far end of the pixel-defining layer to the inner edge of the second sub-blocking layer in the green light-emitting region.

[0012] In an implementation, the fifth distance from the far end of the pixel-defining layer to the inner edge of the first sub-blocking layer in the red light-emitting region can be less than the sixth distance from the far end of the pixel-defining layer to the inner edge of the third sub-blocking layer in the blue light-emitting region.

[0013] In some embodiments, the display device may further include a color filter disposed on the main light blocking layer.

[0014] In this implementation, the color filter can fill the space between the main light-blocking layer and the sub-blocking layer.

[0015] Another embodiment of this disclosure provides a display device comprising: a substrate; a transistor disposed on the substrate; a first electrode electrically connected to the transistor; a pixel defining layer disposed on the first electrode; a light-emitting layer disposed in an opening of the pixel defining layer; a second electrode disposed on the light-emitting layer; an encapsulation layer disposed on the second electrode; and a main light-blocking layer and a sub-blocking layer disposed on the encapsulation layer, wherein the sub-blocking layer is disposed within an opening of the main light-blocking layer, the openings of the main light-blocking layer, the sub-blocking layer, and the pixel defining layer are circular in planar shape, and the light-emitting layer emits red light.

[0016] In the implementation, the first distance between the inner edge of the sub-blocking layer and the edge of the pixel defining layer can satisfy Formula 1, and the second distance between the outer edge of the sub-blocking layer and the edge of the pixel defining layer can satisfy Formula 2.

[0017] Formula 1 Formula 2 In the implementation method, in formula 1, θ a θ is the first angle of light emitted from the display device, and in Formula 2, θ b The second angle of light emitted from the display device is smaller than the first angle. In Formulas 1 and 2, N is the number of layers disposed between the pixel limiting layer and the main light blocking layer. In Formulas 1 and 2, d... n Determined by the following formula 3, and Formula 3 In formula 3, t n It is the thickness of the nth layer, and θ n It is determined by the following formula 4, and Formula 4 In formula 4, n n+1 The value is 1.

[0018] In one implementation, the main light-blocking layer may surround the sub-blocking layer.

[0019] In an implementation, the display device may define a red light-emitting area, a green light-emitting area, and a blue light-emitting area.

[0020] In an implementation, the sub-blocking layer may include at least one of a first sub-blocking layer overlapping the red emitting region, a second sub-blocking layer overlapping the green emitting region, and a third sub-blocking layer overlapping the blue emitting region.

[0021] In an implementation, the sub-blocking layer may include a first sub-blocking layer, a second sub-blocking layer, and a third sub-blocking layer.

[0022] In an implementation, the third distance from the far end of the pixel-defining layer to the inner edge of the first sub-blocking layer in the red light-emitting region can be less than the fourth distance from the far end of the pixel-defining layer to the inner edge of the second sub-blocking layer in the green light-emitting region.

[0023] In an implementation, the fifth distance from the far end of the pixel-defining layer to the inner edge of the first sub-blocking layer in the red light-emitting region can be less than the sixth distance from the far end of the pixel-defining layer to the inner edge of the third sub-blocking layer in the blue light-emitting region.

[0024] In some embodiments, the display device may further include a color filter disposed on the main light blocking layer.

[0025] In this implementation, the color filter can fill the space between the main light-blocking layer and the sub-blocking layer.

[0026] These implementation methods can provide a display device capable of adjusting colors. Attached Figure Description

[0027] The above and other embodiments, advantages and features of this disclosure will become more apparent from the description of embodiments of this disclosure in more detail with reference to the accompanying drawings.

[0028] Figure 1 This is a perspective view schematically showing an embodiment of the display device in use.

[0029] Figure 2 This is an exploded perspective view of an embodiment of the display device.

[0030] Figure 3 This is a block diagram of an embodiment of the display device.

[0031] Figure 4 This is a schematic perspective view of a display device according to another embodiment.

[0032] Figure 5 This is a cross-sectional view of an embodiment of the display panel.

[0033] Figure 6 This is a top plan view of an implementation of some components of a pixel.

[0034] Figure 7 as well as Figure 8A and Figure 8B It is a cross-sectional view of the path of light in some areas.

[0035] Figure 9 This is a cross-sectional view of an embodiment of the display panel.

[0036] Figure 10A and Figure 10B Each is a top-down plan view of an implementation method consisting of a number of pixels.

[0037] Figure 11 This is a WAD diagram based on the implementation method and comparative examples.

[0038] Figure 12 This is a block diagram of an electronic device according to an embodiment.

[0039] Figure 13 Schematic diagrams of electronic devices according to various embodiments are shown. Detailed Implementation

[0040] In the following detailed description, exemplary embodiments of this disclosure are illustrated and described by way of example only. This disclosure can be implemented in various ways and is not limited to the following embodiments.

[0041] The accompanying drawings and descriptions are intended to be illustrative rather than restrictive. Throughout the specification, the same reference numerals denote the same elements.

[0042] Furthermore, the dimensions and thicknesses of each configuration shown in the figures are arbitrarily presented for ease of understanding and description, but this disclosure is not limited thereto. In the figures, the thicknesses of layers, films, panels, regions, etc., are exaggerated for clarity. In the figures, the thicknesses of some layers and regions are exaggerated for understanding and ease of description.

[0043] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it may be directly on the other element or there may be intervening elements. Conversely, when an element is referred to as being "directly on" another element, there are no intervening elements. Furthermore, it will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it may be directly on the other element or there may be intervening elements.

[0044] Furthermore, unless otherwise expressly stated to the contrary, “comprise” and its variations (such as “comprises” or “comprising”) shall be understood to mean including the elements stated, but not excluding any other elements.

[0045] Furthermore, throughout the instruction manual, when it is mentioned "in a plan view," it means when the target portion is viewed from above, and when it is mentioned "in a sectional view," it means when the cross-section obtained by vertically cutting the target portion is viewed from one side.

[0046] The following will refer to Figures 1 to 3 Describe a schematic structure of the display device. Figure 1 This is a schematic perspective view showing an embodiment of the display device in use. Figure 2 This is an exploded perspective view of the display device in the embodiment, and Figure 3 This is a block diagram of the display device in the implementation method.

[0047] refer to Figure 1The display device 1000 in this embodiment is a device for displaying video or still images, and can be used as a display screen for various products, including portable electronic devices such as mobile phones, smartphones, tablet PCs, mobile communication terminals, e-notebooks, e-books, portable multimedia players (PMPs), navigation systems, ultra-mobile PCs (UMPCs), or the like, as well as televisions, laptops, monitors, billboards, and Internet of Things (IoT) devices. Furthermore, the display device 1000 in this embodiment can also be used in wearable devices such as smartwatches, smartwatch phones, glasses displays, and head-mounted displays (HMDs). Additionally, the display device 1000 in this embodiment can be used as a central information display (CID) placed on the dashboard and center panel or dashboard of a vehicle, as a vehicle mirror display replacing the side mirrors, and as a display placed on the rear surface of the front seats for entertainment of the rear seats. For ease of explanation, Figure 1 A display device 1000 is shown for use as a smartphone.

[0048] The display device 1000 can display an image facing a third direction DR3 on each of the display surfaces parallel to the first direction DR1 and the second direction DR2. The display surface on which the image is displayed can correspond to the front surface of the display device 1000 and the front surface of the cover window WU. The image can include both moving images and still images.

[0049] In this implementation, the front (or top) surface and rear (or bottom) surface of each component are defined based on the orientation in which the image is displayed. The front and rear surfaces are opposite to each other on a third-party DR3, and the normal direction of each of the front and rear surfaces may be parallel to the third-party DR3. The separation distance between the front and rear surfaces on the third-party DR3 may correspond to the thickness of the display panel on the third-party DR3.

[0050] The display device 1000 in the embodiment can detect externally applied user input (see reference). Figure 1 (The user input can include various forms of external input, such as a part of the user's body, light, heat, or pressure. In this embodiment, user input is described as the user's hand being applied to the front surface. However, this disclosure is not limited thereto. User input can be provided in various forms, and depending on the structure of the display device 1000, the display device 1000 can also detect user input applied to the side or back surface of the display device 1000.)

[0051] The display device 1000 may include a cover window WU and a housing HM. In an embodiment, the cover window WU and the housing HM may be connected to each other to form the appearance of the display device 1000.

[0052] The cover window WU may include an insulating sheet. In embodiments, for example, the cover window WU may include glass, plastic, or any combination thereof, or be composed of glass, plastic, or any combination thereof.

[0053] The front surface of the cover window WU can define the front surface of the display device 1000. The transmissive region TA can be an optically transparent region. In an embodiment, the transmissive region TA can, for example, be a region with 90% or higher visible light transmittance.

[0054] The blocking region BA can define the shape of the transmitting region TA. The blocking region BA can be adjacent to (adjacent to) the transmitting region TA and can surround the transmitting region TA. Compared to the transmitting region TA, the blocking region BA can be a region with relatively low light transmittance. The blocking region BA can include an opaque material that blocks light. The blocking region BA can have a predetermined color. The blocking region BA can be defined by a border layer provided separately from the transparent substrate defining the transmitting region TA, or it can be defined by an ink layer formed by inserting into or coloring the transparent substrate.

[0055] The housing HM can be connected to the cover window WU. The cover window WU can be disposed on the front surface of the housing HM. The housing HM can be connected to the cover window WU to provide a predetermined receiving space.

[0056] The housing HM may comprise a material with relatively high rigidity. In an embodiment, for example, the housing HM may comprise multiple frames and / or panels comprising glass, plastic, or metal, or any combination thereof, or composed of them. The housing HM can reliably protect the components of the display device 1000 housed within its internal space from external impacts.

[0057] refer to Figure 1 and Figure 2 The display panel DP and optical components ES can be housed in a predetermined space provided between the housing HM and the cover window WU.

[0058] The display panel DP may include pixels PX for displaying images and a driving unit 50, with the pixels PX disposed in the display area DA and the component area EA. The display panel DP may include a front surface comprising the display area DA and a non-display area PA. In an embodiment, the display area DA and the component area EA may be areas that include pixels PX for displaying images and are also areas for detecting external input via a touch sensor disposed on top of the pixels PX on a third-party DR3.

[0059] The transmissive region TA of the cover window WU may overlap with at least a portion of the display region DA and component region EA of the display panel DP. In embodiments, for example, the transmissive region TA may overlap with the front surface of the display region DA and component region EA, or may overlap with at least a portion of the display region DA and component region EA. Therefore, a user can view an image and / or provide external input based on the image through the transmissive region TA. However, this disclosure is not limited thereto. In embodiments, for example, the area for displaying the image and the area for detecting external input may be separate from each other.

[0060] The non-display area PA of the display panel DP may at least partially overlap with the blocking area BA of the cover window WU. The non-display area PA may be the area covered by the blocking area BA. The non-display area PA may be adjacent to (adjacent to) the display area DA and may surround the display area DA. The non-display area PA does not display an image and may be provided with drive circuitry, drive lines, or the like to drive the display area DA. The non-display area PA may include a first peripheral area PA1 and a second peripheral area PA2, wherein the first peripheral area PA1 is located outside the display area DA, and the second peripheral area PA2 has a drive unit 50 and connecting lines disposed therein and defines a curved area. Figure 2 In one embodiment, the first peripheral region PA1 is disposed on three sides of the display region DA, and the second peripheral region PA2 is disposed on the remaining side of the display region DA.

[0061] In one embodiment, a portion of the non-display area PA of the display panel DP can be curved. In this case, a portion of the non-display area PA can face the back of the display device 1000, thereby reducing the obstruction area BA visible on the front surface of the display device 1000. Figure 2 In this process, the second peripheral region PA2 can be bent and assembled after being set on the back of the display region DA.

[0062] Furthermore, the component area EA of the display panel DP may include a first component area EA1 and a second component area EA2. The first component area EA1 and the second component area EA2 may be at least partially surrounded by the display area DA. It is shown that the first component area EA1 and the second component area EA2 are spaced apart from each other, but may be at least partially connected without limitation. The first component area EA1 and the second component area EA2 may be optical elements utilizing infrared (IR), visible light, or sound (see reference). Figure 2 The ES (hereinafter referred to as the component) is set in the area below.

[0063] The display area DA (hereinafter also referred to as the main display area) and component area EA are formed by multiple light-emitting diodes (LEDs) and multiple pixel circuit units, which generate light-emitting current and supply it to each of the multiple LEDs. Here, an LED and a pixel circuit unit are also referred to as a pixel PX. In the display area DA and component area EA, a pixel circuit unit and an LED can be formed one-to-one.

[0064] The first component region EA1 may include a transmissive portion and a display portion comprising a plurality of pixels PX, through which light and / or sound can be transmitted. The transmissive portion is disposed between adjacent pixels PX and is formed of a layer through which light and / or sound can be transmitted. The transmissive portion may be disposed between adjacent pixels, and in some embodiments, a layer that cannot transmit light of a predetermined wavelength (e.g., visible light) may also overlap with the first component region EA1. The number of pixels per unit area (also called resolution) of the pixels PX included in the display region DA (also called normal pixels) may be the same as the number of pixels per unit area of ​​the pixels PX included in the first component region EA1 (also called first component pixels).

[0065] The second component region EA2 includes an area formed by a transparent layer that allows light to pass through, wherein it does not have a conductive layer or a semiconductor layer (hereinafter also referred to as a light-transmitting region), and may have a structure that does not block light by forming an opening defined by a layer including a light-blocking material (e.g., a pixel defining layer and / or at least two color filters), the opening overlapping a position corresponding to the second component region EA2. The number of pixels per unit area of ​​the pixel PX (hereinafter also referred to as the second component pixel) included in the second component region EA2 may be less than the number of pixels per unit area of ​​the normal pixel included in the display region DA. Therefore, the resolution of the second component pixel may be lower than the resolution of the normal pixel.

[0066] The drive unit 50 can be disposed (e.g., mounted) in the second peripheral region PA2, and can be disposed (e.g., mounted) on the curved portion or disposed on either side of the curved portion. The drive unit 50 can be formed in the form of a chip.

[0067] The driving unit 50 can be electrically connected to the display area DA and the component area EA to provide electrical signals to the pixels PX in the display area DA and the component area EA. In one embodiment, for example, the driving unit 50 can provide data signals to the pixels PX disposed in the display area DA. In an alternative embodiment, the driving unit 50 may include touch driving circuitry and can be electrically connected to a touch sensor disposed in the display area DA and / or the component area EA. In an alternative embodiment, in addition to the circuitry described above, the driving unit 50 may also include various circuits, or may be designed to provide various electrical signals to the display area DA.

[0068] The display device 1000 may have a pad portion at the distal end of the second peripheral region PA2, and the pad portion may be electrically connected to a flexible printed circuit board (FPCB) including a driver chip. The driver chip disposed on the flexible printed circuit board may include various driver circuits for driving the display device 1000, connectors for power supply, or the like. In some embodiments, a rigid printed circuit board (PCB) may be used instead of a flexible printed circuit board.

[0069] Optical element ES can be disposed on the lower portion of display panel DP. Optical element ES may include a first optical element ES1 overlapping with a first component region EA1 and a second optical element ES2 overlapping with a second component region EA2. The first optical element ES1 can use IR light, in which case the first component region EA1 can be overlapped with the first component region EA1 by a layer that does not transmit light such as visible light.

[0070] The first optical element ES1 can be an electronic component that utilizes light or sound. In an embodiment, for example, the first optical element ES1 can be a sensor that receives and utilizes light, such as an IR sensor, a sensor that outputs and detects light or sound to measure distance or identify fingerprints, a relatively small lamp that outputs light, a speaker that outputs sound, or the like. In the case of an electronic component that utilizes light, light of various wavelength bands can be used, such as visible light, IR light, or ultraviolet light.

[0071] The second optical element ES2 can be at least one of a camera, an infrared camera, a dot projector, an infrared illuminator, and a time-of-flight sensor (ToF sensor).

[0072] In some embodiments, the optical element ES may also include a light detection sensor or a thermal detection sensor. The optical element ES can detect external objects received through the front surface or provide sound signals, such as voice, to the outside through the front surface. The optical element ES may also include various configurations and is not limited to any particular embodiment.

[0073] Now for reference Figure 3 The display device 1000 may include a display panel DP, a power supply module PM, a first electronic module EM1, and a second electronic module EM2. The display panel DP, the power supply module PM, the first electronic module EM1, and the second electronic module EM2 may be electrically connected to each other.

[0074] exist Figure 3The diagram illustrates a configuration of a display panel DP, including pixels PX and a touch sensor TS disposed in the display area DA. The display panel DP may include pixels PX and a touch sensor TS. The display panel DP may include pixels PX as part of an image generation configuration and visible to the user from the outside. Additionally, the touch sensor TS may be disposed on top of the pixels PX and can detect external input applied from the outside. The touch sensor TS can detect input provided to the cover window WU (see...). Figure 2 External input.

[0075] The power supply module PM can provide the power required for the overall operation of the display device 1000. The power supply module PM may include a conventional battery module.

[0076] The first electronic module EM1 and the second electronic module EM2 may include various functional modules for operating the display device 1000. The first electronic module EM1 may be directly disposed (e.g., mounted) on a motherboard electrically connected to the display panel DP, or it may be disposed (e.g., mounted) on a separate substrate and electrically connected to the motherboard via a connector (not shown) or the like.

[0077] The first electronic module EM1 may include a control module CM, a wireless communication module TM, an image input module IIM, an audio input module AIM, a memory MM, and an external interface IF. Some of these modules may not be mounted on the motherboard, but may be electrically connected to the motherboard via a flexible printed circuit board.

[0078] The control module CM can control the overall operation of the display device 1000. The control module CM can be a microprocessor. In an embodiment, for example, the control module CM activates or disables the display panel DP. The control module CM can control other modules, such as the image input module IIM or the audio input module AIM, based on touch signals received from the display panel DP.

[0079] The wireless communication module TM can send / receive wireless signals to or from other terminals using Bluetooth or Wi-Fi lines. The wireless communication module TM can also send / receive voice signals using conventional communication lines. The wireless communication module TM includes a transmitting unit TM1 that modulates and transmits the signal to be transmitted, and a receiving unit TM2 that demodulates the received signal.

[0080] The Image Input Module (IIM) processes image signals and converts them into image data that can be displayed on the Display Panel (DP). The Audio Input Module (AIM) receives external audio signals via a microphone in recording mode, voice recognition mode, or similar modes, and converts the received audio signals into electrical audio data.

[0081] The external interface IF can be used to connect to an external charger, wired / wireless data port, card slot (e.g., memory card, user identity module / user identification module (SIM / UIM) card) or similar interfaces.

[0082] The second electronic module EM2 may include an audio output module AOM, an optical transmitter module LM, an optical receiver module LRM, and a camera module CMM, at least some of which may be as follows: Figure 2 The optical element ES is shown disposed on the rear surface of the display panel DP. The optical element ES may include a light emitting module LM, a light receiving module LRM, and a camera module CMM. In addition, the second electronic module EM2 may be directly disposed (e.g., mounted) on the motherboard, or may be disposed (e.g., mounted) on a separate substrate and electrically connected to the display panel DP via a connector (not shown), or may be electrically connected to the first electronic module EM1.

[0083] The audio output module AOM can convert audio data received from the wireless communication module TM or audio data stored in the memory MM, and output the converted audio data to the outside.

[0084] A light emitting module (LM) can generate and output light. The LM can output infrared (IR) light. In one embodiment, the LM may include, for example, an LED element. In another embodiment, for example, a light receiving module (LRM) can detect infrared light. The LRM can be activated when a predetermined level or higher of infrared light is detected. The LRM may include a complementary metal-oxide-semiconductor (CMOS) sensor. After the infrared light generated by the LM is output, the infrared light may be reflected by an external object (e.g., a user's finger or face), and the reflected infrared light may be incident on the LRM. A camera module (CMM) can capture an external image.

[0085] The following will refer to Figure 4 The structure of a display device 1000 according to another embodiment will be described. Figure 4 This is a schematic perspective view of a display device according to another embodiment. Descriptions of configurations identical to those described above will be omitted. Figure 4 The embodiment shows a foldable display device having a structure in which the display device 1000 is folded via a folding axis FAX.

[0086] refer to Figure 4In this embodiment, the display device 1000 may be a foldable display device. The display device 1000 can be folded outwards or inwards relative to the folding axis FAX. When the display device 1000 is folded outwards relative to the folding axis FAX, the display surface of the display device 1000 can be respectively disposed on the outer side of the third-direction DR3, thereby allowing images to be displayed in both directions. When the display device 1000 is folded inwards relative to the folding axis FAX, the display surface is not visible from the outside.

[0087] In this embodiment, the display device 1000 may include a display area DA, a component area EA, and a non-display area PA. The display area DA may be divided into a first-first display area DA1-1, a first-second display area DA1-2, and a folding area FA. The first-first display area DA1-1 and the first-second display area DA1-2 may be positioned on the left and right sides respectively relative to the folding axis FAX (or centered on the folding axis FAX), and the folding area FA may be positioned between the first-first display area DA1-1 and the first-second display area DA1-2. In this case, when the display device 1000 is folded outward relative to the folding axis FAX, the first-first display area DA1-1 and the first-second display area DA1-2 are positioned on opposite sides on the third direction DR3, and the image can be displayed in both directions. Furthermore, when the display device 1000 is folded inward relative to the folding axis FAX, the first-first display area DA1-1 and the first-second display area DA1-2 may be invisible from the outside.

[0088] The following will refer to Figures 5 to 8B Describe the display device in the embodiment. Figure 5 This is a cross-sectional view of the display panel in the embodiment. Figure 6 This is a top plan view of some components of a pixel in the implementation method, and Figure 7 as well as Figure 8A and Figure 8B It is a cross-sectional view of the path of light in some areas.

[0089] First, refer to Figure 5 The substrate SUB may comprise a material with rigid properties, such as glass, or a flexible material that can be bent, such as plastic and polyimide. The substrate SUB may extend in a first direction DR1 and a second direction DR2.

[0090] A buffer layer (BF) can be placed on top of the substrate (SUB). The buffer layer (BF) can planarize the surface of the substrate (SUB) and block the penetration of impurity elements. The buffer layer (BF) can include inorganic materials, such as inorganic insulating materials, such as silicon nitride (SiN). x ), silicon oxide (SiO) x ) and silicon oxynitrides (SiO)x N y ).

[0091] A semiconductor layer ACT can be disposed on top of the buffer layer BF. The semiconductor layer ACT of the display device in the embodiment may include amorphous silicon, polycrystalline silicon, or oxide semiconductor.

[0092] The semiconductor layer ACT can include a channel region C, a source region S, and a drain region D, which are distinguished by whether they are doped with impurities. The source region S and the drain region D can be doped with impurities to have conductivity properties corresponding to those of a conductor.

[0093] A first gate insulating film GI1 may be disposed above the semiconductor layer ACT. The first gate insulating film GI1 may cover the semiconductor layer ACT and the substrate SUB. The first gate insulating film GI1 may include an inorganic insulating material, such as silicon nitride (SiN). x ), silicon oxide (SiO) x ) and silicon oxynitrides (SiO) x N y The first gate insulating film GI1 can be a single-layer or multi-layer structure comprising inorganic insulating materials with different phases.

[0094] A gate electrode GE1 can be disposed on top of the first gate insulating film GI1. The gate electrode GE1 may comprise a metal or metal alloy, such as copper (Cu), molybdenum (Mo), aluminum (Al), silver (Ag), chromium (Cr), tantalum (Ta), and titanium (Ti). The gate electrode GE1 may be formed as a single layer or multiple layers. The region of the semiconductor layer ACT that overlaps with the gate electrode GE1 in the plane may be the channel region C.

[0095] A second gate insulating film GI2 can be disposed above the gate electrode GE1. The second gate insulating film GI2 may include an inorganic insulating material, such as silicon nitride (SiN). x ), silicon oxide (SiO) x ) and silicon oxynitrides (SiO) x N y The second gate insulating film GI2 can be a single-layer or multi-layer structure comprising inorganic insulating materials with different phases.

[0096] A capacitor electrode GE2 can be disposed on top of the second gate insulating film GI2. The capacitor electrode GE2 can overlap with the gate electrode GE1 to form a capacitor.

[0097] A first insulating film IL1 can be disposed on the capacitor electrode GE2. The first insulating film IL1 may include an inorganic insulating material, such as silicon nitride (SiN). x ), silicon oxide (SiO) x ) and silicon oxynitrides (SiO) xN y The first insulating film IL1 can be a single-layer or multi-layer structure comprising inorganic insulating materials with different phases.

[0098] A source electrode SE and a drain electrode DE can be disposed on the first insulating film IL1. The source electrode SE and the drain electrode DE are electrically connected to the source region S and the drain region D of the semiconductor layer ACT through openings defined in the first insulating film IL1, the second gate insulating film GI2, and the first gate insulating film GI1, respectively.

[0099] Therefore, the semiconductor layer ACT, the gate electrode GE1, the source electrode SE, and the drain electrode DE form a single transistor. According to an embodiment, the transistor may include only the source region S and the drain region D of the semiconductor layer ACT, instead of the source electrode SE and the drain electrode DE.

[0100] The source electrode SE and drain electrode DE can comprise metals or metal alloys, such as aluminum (Al), copper (Cu), silver (Ag), gold (Au), platinum (Pt), palladium (Pd), nickel (Ni), molybdenum (Mo), tungsten (W), titanium (Ti), chromium (Cr), and tantalum (Ta). The source electrode SE and drain electrode DE can comprise a single layer or multiple layers. In this embodiment, the source electrode SE and drain electrode DE can comprise three layers: a top layer, an intermediate layer, and a bottom layer. The top and bottom layers can comprise titanium (Ti), and the intermediate layer can comprise aluminum (Al).

[0101] A second insulating film IL2 may be disposed on the source electrode SE and the drain electrode DE. The second insulating film IL2 covers the source electrode SE and the drain electrode DE. The second insulating film IL2 can planarize the surface of the substrate SUB on which a transistor is disposed (e.g., mounted). The second insulating film IL2 may be an organic insulating film and may include one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin.

[0102] A first electrode E1 can be disposed on top of the second insulating film IL2. The first electrode E1 (also referred to as the anode) may comprise a single layer or multiple layers comprising a transparent conductive oxide or a metallic material. The transparent conductive oxide may comprise at least one of indium tin oxide (ITO), poly-ITO, indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), and indium tin zinc oxide (ITZO). The metallic material may comprise silver (Ag), molybdenum (Mo), copper (Cu), gold (Au), aluminum (Al), or the like. In an embodiment, for example, the first electrode E1 may have a three-layer structure of ITO / Ag / ITO.

[0103] The first electrode E1 can be physically and electrically connected to the drain electrode DE through an opening in the second insulating film IL2. Therefore, the first electrode E1 can receive output current from the drain electrode DE to be delivered to the light-emitting layer EML.

[0104] A pixel defining layer PDL can be formed on the first electrode E1 and the second insulating film IL2. The pixel defining layer PDL can overlap with the edge of the first electrode E1 and be spaced apart from the center of the first electrode E1. The pixel defining layer PDL can define the formation position of the light-emitting layer EML, such that the light-emitting layer EML is disposed on the exposed top surface of the first electrode E1.

[0105] The pixel defining layer (PDL) may be an organic insulating film comprising one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenolic resin, and in some embodiments, the pixel defining layer (PDL) may be formed as a black pixel defining layer comprising black pigment.

[0106] The emissive layer (EML) can be disposed within the opening OP-PDL of the pixel-defining layer (PDL). The EML can include organic materials that emit red, green, blue, or other colors of light. EMLs emitting red, green, or blue light can include organic materials with relatively low or relatively high molecular weights. Although... Figure 5 The light-emitting layer (EML) is shown as a single layer, but in practice, the EML may also include auxiliary layers, such as an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer on the top and bottom of the EML, with the hole injection layer and hole transport layer disposed on the bottom of the EML and the electron transport layer and electron injection layer disposed on the top of the EML.

[0107] In this implementation, the light-emitting layer EML can emit red light. The sub-blocking layer SBM, described later, can be disposed in the region emitting red light.

[0108] The second electrode E2 can be disposed on the pixel defining layer (PDL) and the light-emitting layer (EML). The second electrode E2, also referred to as the cathode, can be formed of a transparent conductive layer including at least one of indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), and indium tin zinc oxide (ITZO). Furthermore, the second electrode E2 can be semi-transparent, and in this case, the second electrode E2 can form a microcavity together with the first electrode E1. Depending on the microcavity structure, the spacing and characteristics between the two electrodes allow light of a predetermined wavelength to be emitted to the top, thereby displaying red, green, or blue.

[0109] The first electrode E1, the light-emitting layer EML, and the second electrode E2 can form a single light-emitting device ED.

[0110] An encapsulation layer ENC can be disposed on the second electrode E2. The encapsulation layer ENC may include at least one inorganic film and at least one organic film, and in an embodiment, it may have a three-layer structure including a first inorganic encapsulation layer EIL1, an organic encapsulation layer EOL, and a second inorganic encapsulation layer EIL2.

[0111] The encapsulation layer ENC can protect the light-emitting layer EML, formed of organic materials, from moisture, oxygen, or the like that may be introduced from the outside. According to an embodiment, the encapsulation layer ENC may include a structure in which inorganic and organic layers are further stacked sequentially.

[0112] A light-blocking layer BM can be disposed on top of the encapsulation layer ENC. The light-blocking layer BM may include or be composed of a black organic material. The black organic material may include a light-blocking material.

[0113] The light-blocking layer BM in the embodiment may include a main light-blocking layer MBM and a sub-blocking layer SBM. In the plane and cross-section, the main light-blocking layer MBM and the sub-blocking layer SBM may be spaced apart from each other.

[0114] like Figure 6 As shown, the main light-blocking layer MBM can have a circular opening OP-MBM. The sub-blocking layer SBM can be disposed within the opening OP-MBM of the main light-blocking layer MBM. The main light-blocking layer MBM can be shaped to surround the sub-blocking layer SBM.

[0115] The sub-blocking layer SBM can define the sub-opening OP-SBM. The sub-blocking layer SBM can be shaped to surround the light-emitting layer EML.

[0116] In the implementation, the opening OP-MBM of the main light blocking layer MBM and the sub-opening OP-SBM of the sub-blocking layer SBM can have a circular shape in the plane, but are not limited to this, and can of course be shaped in a variety of ways.

[0117] Refer again Figure 5 A planarization layer OC is disposed on top of the light-blocking layer BM, covering the light-blocking layer BM. The planarization layer OC is used to planarize the top surface of the display panel DP, and may be a transparent organic insulating film including one or more materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene and phenolic resin.

[0118] The display device in the embodiment may include a sub-blocking layer SBM disposed in the region emitting red light. Red light emitted at a relatively low angle may cause the color of the display device to appear red, resulting in a reddish tint, and the sub-blocking layer SBM can block the red light emitted at a relatively low angle, thereby providing light with an appropriate color.

[0119] The following will refer to Figure 7 and Figures 8A to 8B The location and in-plane width of the sub-barrier layer SBM in the implementation method are discussed in more detail.

[0120] First refer to Figure 7 Light emitted from the emissive layer (EML) can be emitted to the exterior of the display device at various angles. Light emitted from the EML can also be refracted and emitted at the interface between the EML and the exterior of the display device.

[0121] Light L1 emitted at a relatively low angle (15 to 30 degrees) on the third-direction DR3 can be blocked by the sub-blocking layer SBM. Light L2 emitted at a relatively high angle (45 to 60 degrees) on the third-direction DR3 can be emitted between the sub-blocking layer SBM and the main light-blocking layer MBM. Furthermore, light L3 emitted on the third-direction DR3 can essentially be emitted directly to the outside of the display device.

[0122] The display device in the embodiment can emit red light at a relatively low angle with low brightness, which can reduce the reddish appearance of the display device and provide a display device with improved color.

[0123] Reference Figure 8A and Figure 8B Describe in detail the location of the sub-barrier layer SBM.

[0124] First refer to Figure 8A The first distance D1 from the edge of the pixel-defining layer PDL to the inner edge of the sub-blocking layer SBM can be determined using the following formula 1. Furthermore, the second distance D2 from the edge of the pixel-defining layer PDL to the outer edge of the sub-blocking layer SBM can be determined using the following formula 2.

[0125] Formula 1 Formula 2 In Formula 1, θ a It is the first angle of the light emitted to the outside of the display device, and in Formula 2, θ b θ is the second angle of light emitted to the outside of the display device. a It can be less than θ b θ a and θ b It refers to the angle of light emission from a third party to the DR3, and it is an acute angle.

[0126] In this case, d can be determined using the following formula 3. n .

[0127] Formula 3

[0128] In formula 3, t n It is the thickness of the nth layer NL, and θ n It can be determined using the following formula 4.

[0129] Formula 4

[0130] In Formula 4, "n" can represent the refractive index, and " n "(subscript n) can correspond to the index "n" in Formulas 1 through 3. Here, N can be determined by the number of all layers between the pixel-defining layer PDL and the light-blocking layer BM, and n n+1 It is defined as 1. In an implementation, when the number of layers between the pixel limiting layer (PDL) and the light blocking layer (BM) is three, for example, the above value can be obtained by replacing N with three. The width of the sub-blocking layer (SBM) can be obtained by subtracting the value in Formula 1 from the value in Formula 2.

[0131] refer to Figure 8B The following describes in detail the arrangement of the first inorganic encapsulation layer EIL1, the organic encapsulation layer EOL, and the second inorganic encapsulation layer EIL2 between the light blocking layer BM and the pixel defining layer PDL. The thickness t1 of the first inorganic encapsulation layer EIL1, the thickness t2 of the organic encapsulation layer EOL, and the thickness t3 of the second inorganic encapsulation layer EIL2 can be determined by predetermined values.

[0132] First, we will describe the situation where it is desired to block the emission of red light from the region at a distance between θ. a With θ b The position and width of the sub-blocking layer SBM when light is emitted outward at an angle between θ and θ. a It can be less than θ b θ a and θ b It is an acute angle relative to the third direction of DR3.

[0133] Since there are three layers between the light blocking layer BM and the pixel limiting layer PDL, N can be three in Equations 1 to 4.

[0134] First, the location of the inner edge of the sub-blocking layer SBM will be described.

[0135] By using Equation 4, the refractive index of the second inorganic encapsulation layer EIL2 is substituted into n3 and θ is... a Substituting θ4, we derive θ3. According to Formula 4, n4 is 1. By substituting the derived θ3 and the thickness t3 of the second inorganic encapsulation layer EIL2 into Formula 3, we derive d3.

[0136] Then, θ2 is obtained by substituting the refractive index n3 of the second inorganic encapsulation layer EIL2, the refractive index n2 of the organic encapsulation layer EOL, and the aforementioned θ3 into Formula 4. d2 is obtained by substituting the obtained θ2 and the thickness t2 of the organic encapsulation layer EOL into Formula 3.

[0137] Then, θ1 is derived by substituting the refractive index n2 of the organic encapsulation layer EOL, the refractive index n1 of the first inorganic encapsulation layer EIL1, and θ2 mentioned above into Equation 4. d1 is derived by substituting the derived θ1 and the thickness t1 of the first inorganic encapsulation layer EIL1 into Equation 3.

[0138] In order to block θ a The light emitted at an angle, the inner edge of the sub-blocking layer SBM can be spaced d1+d2+d3 from the edge of the pixel-limiting layer PDL.

[0139] Next, the location of the outer edge of the sub-blocking layer SBM will be described.

[0140] By using Equation 4, the refractive index of the second inorganic encapsulation layer EIL2 is substituted into n3 and θ is... b Substituting θ4, we can derive θ 3' By deriving θ 3' Substituting the thickness t3 of the second inorganic encapsulation layer EIL2 into Formula 3, we can derive d. 3' .

[0141] Then, by adjusting the refractive index n3 of the second inorganic encapsulation layer EIL2, the refractive index n2 of the organic encapsulation layer EOL, and the aforementioned θ... 3' Substituting into Formula 4, we can derive θ 2' By deriving θ 2' Substituting the thickness t2 of the organic encapsulation layer EOL into Equation 3, we can derive d. 2' .

[0142] Then, by adjusting the refractive index n2 of the organic encapsulation layer EOL, the refractive index n1 of the first inorganic encapsulation layer EIL1, and the aforementioned θ... 2' Substituting into Formula 4, we can derive θ 1' By deriving θ 1' Substituting the thickness t1 of the first inorganic encapsulation layer EIL1 into Equation 3, we can derive d. 1' .

[0143] In order to block θ b The light emitted at an angle, the sub-blocking layer SBM can be spaced apart from the edge of the pixel-defining layer PDL by d 1' +d 2' +d 3' .

[0144] Therefore, when it is necessary to block light emitted from the red light emission region into the outside at θ a to θ b When light is emitted at an angle between the two points, the inner edge of the sub-blocking layer SBM can be positioned at a distance d1+d2+d3 from the edge of the pixel-defining layer PDL. The outer edge of the sub-blocking layer SBM can also be positioned at a distance d1+d2+d3 from the edge of the pixel-defining layer PDL. 1' +d 2' +d 3' At the location.

[0145] The width of the sub-barrier layer SBM can be (d 1' +d 2' +d 3' ) - (d1+d2+d3). That is, the width of the sub-barrier layer SBM can be obtained by subtracting the value in Formula 1 from the value in Formula 2.

[0146] The following will refer to Figure 9 , Figure 10A and Figure 10B Describes a display panel according to another embodiment. Figure 9 This is a cross-sectional view of the display panel in the embodiment, and Figure 10A and Figure 10B Each of these is a top-view plan view of some pixels in the implementation method. Descriptions of components identical to those described above will be omitted.

[0147] refer to Figure 9 The display device in the embodiment may further include a color filter CF. The color filter CF may be any one of a red color filter that transmits red light, a green color filter that transmits green light, and a blue color filter that transmits blue light.

[0148] The color filter CF can overlap with the first electrode E1 of the LED. Light emitted from the emissive layer EML can be emitted in a manner that changes to the corresponding color as it passes through the color filter CF, so that all light emitted from the emissive layer EML can have the same color. However, the emissive layer EML may also emit light of different colors, which can pass through a color filter of the same color to enhance the displayed color.

[0149] According to one implementation, the color filter CF can be replaced by a color conversion layer, or may also include a color conversion layer. The color conversion layer may include quantum dots.

[0150] The color filter CF can overlap with the light-blocking layer BM. The color filter CF can overlap with at least a portion of the sub-blocking layer SBM and the main light-blocking layer MBM. The color filter CF can completely cover the top and side surfaces of the sub-blocking layer SBM. The color filter CF can cover a portion of the main light-blocking layer MBM. The color filter CF can fill the space between the main light-blocking layer MBM and the sub-blocking layer SBM.

[0151] refer to Figure 10A The display panel DP in the embodiment may include a red emitting region RLA, a green emitting region GLA, and a blue emitting region BLA. The main light blocking layer MBM may define a first opening OP1, a second opening OP2, and a third opening OP3 that overlap with the red emitting region RLA, the green emitting region GLA, and the blue emitting region BLA, respectively.

[0152] The display panel DP in the embodiment may include a first sub-blocking layer SBM1 disposed in the first opening OP1, a second sub-blocking layer SBM2 disposed in the second opening OP2, and a third sub-blocking layer SBM3 disposed in the third opening OP3.

[0153] Each of the first sub-barrier layer SBM1, the second sub-barrier layer SBM2, and the third sub-barrier layer SBM3 can have a different size. The position and width of each of the first sub-barrier layer SBM1, the second sub-barrier layer SBM2, and the third sub-barrier layer SBM3 can be determined by the preceding formulas 1 to 4.

[0154] The widths of the first sub-blocking layer SBM1, the second sub-blocking layer SBM2, and the third sub-blocking layer SBM3 can be different from each other.

[0155] To adjust the colors of a display device, it may be necessary to control the emitted red, green, and blue light at different angles. In an implementation, for example, light emitted at a relatively low angle can be blocked in areas emitting red light, while light emitted at a relatively high angle can be blocked in areas emitting blue and green light. The positions and widths of the sub-blocking layers SBM1, SBM2, and SBM3 can be adjusted according to the emission angle of the light to be blocked. The position and width of each of the sub-blocking layers SBM1, SBM2, and SBM3 can be obtained by substituting the emission angle to be controlled into Formulas 1 to 4.

[0156] The distances from the edge of the pixel-defining layer (PDL) to the inner edges of each of the sub-blocking layers (SBM1, SBM2, and SBM3) can vary. The first distance LB1 from the first edge E11 of the PDL to the inner edge of the first sub-blocking layer (SBM1), the second distance LB2 from the second edge E12 of the PDL to the inner edge of the second sub-blocking layer (SBM2), and the third distance LB3 from the third edge E13 of the PDL to the inner edge of the third sub-blocking layer (SBM3) can be different from each other. The first distance LB1 can be smaller than the second distance LB2 and the third distance LB3.

[0157] refer to Figure 10B The display device in the embodiment may further include a color filter CF. The color filter CF may be any one of a red color filter CF1 that transmits red light (also known as "first color filter CF1"), a green color filter CF2 that transmits green light (also known as "second color filter CF2"), or a blue color filter CF3 that transmits blue light (also known as "third color filter CF3").

[0158] Red color filter CF1 can cover the red emitting area RLA. Green color filter CF2 can cover the green emitting area GLA. Blue color filter CF3 can cover the blue emitting area BLA. In this specification, an embodiment in which the red color filter CF1, green color filter CF2, and blue color filter CF3 do not overlap is illustrated, but some of the multiple color filters CF can overlap each other.

[0159] Color filters CF1, CF2, and CF3 can overlap with the LED's emissive layers EML1, EML2, and EML3. Light emitted from emissive layers EML1, EML2, and EML3 can be changed to the corresponding color as it passes through color filters CF1, CF2, and CF3, allowing all light emitted from emissive layers EML1, EML2, and EML3 to have the same color. However, emissive layers EML1, EML2, and EML3 may also emit light of different colors, which can be enhanced by using color filters CF1, CF2, and CF3 of the same color.

[0160] According to the implementation, color filters CF1, CF2, and CF3 can be replaced by a color conversion layer, or may also include a color conversion layer. The color conversion layer may include quantum dots.

[0161] Color filters CF1, CF2, and CF3 may overlap with at least a portion of the main light-blocking layer MBM. Furthermore, each of color filters CF1, CF2, and CF3 may overlap with a corresponding sub-blocking layer SBM1, SBM2, or SBM3 in each region. The first color filter CF1 may overlap with the first sub-blocking layer SBM1. The second color filter CF2 may overlap with the second sub-blocking layer SBM2. The third color filter CF3 may overlap with the third sub-blocking layer SBM3.

[0162] The following will refer to Figure 11 Describe the implementation methods (also referred to as "examples") and comparative examples. Figure 11 This is a WAD diagram based on the implementation method and comparative examples.

[0163] The embodiments relate to display panels including a main light-blocking layer and a sub-blocking layer, and comparative examples relate to display panels including only a main light-blocking layer. Specifically, the examples include a sub-blocking layer having a distance of 1 micrometer from its inner edge to one end (e.g., an edge) of the pixel-defining layer in the red emitting region and a distance of 2 micrometers from its outer edge to one end (e.g., an edge) of the pixel-defining layer. The examples also include a sub-blocking layer having a distance of 6 micrometers from its inner edge to one end (e.g., an edge) of the pixel-defining layer in the green emitting region and a distance of 7 micrometers from its outer edge to one end (e.g., an edge) of the pixel-defining layer. Finally, the examples include a sub-blocking layer having a distance of 1.5 micrometers from its inner edge to one end (e.g., an edge) of the pixel-defining layer in the blue emitting region and a distance of 2.5 micrometers from its outer edge to one end (e.g., an edge) of the pixel-defining layer.

[0164] In the figures according to the comparative example and implementation, A1 and B1 are the color coordinates of light emitted at 15 degrees, A2 and B2 are the color coordinates of light emitted at 30 degrees, A3 and B3 are the color coordinates of light emitted at 45 degrees, and A4 and B4 are the color coordinates of light emitted at 60 degrees.

[0165] It has been confirmed that the comparative example and the implementation have almost similar colors at 45 degrees and 60 degrees, but at 15 degrees and 30 degrees, the implementation exhibits a significantly reduced reddish color compared to the comparative example.

[0166] It has been confirmed that when the sub-blocking layer is applied to the red emitting area according to the embodiment, it blocks the red light emitted at a relatively low angle, reduces the reddening phenomenon, and provides a display device with the color desired by the user.

[0167] The display device described in this embodiment can be applied to various electronic devices. The electronic device described in this embodiment may include the display device, and may also include modules or devices with additional functions in addition to the display device.

[0168] Figure 12 This is a block diagram of an electronic device. (Reference) Figure 12 The electronic device 10 in the embodiment may include a display module 11, a processor 12, a memory 13, and a power module 14.

[0169] The processor 12 may include at least one of a central processing unit (CPU), an application processor (AP), a graphics processing unit (GPU), a communication processor (CP), an image signal processor (ISP), and a controller.

[0170] The memory 13 can store the data information required for the operation of the processor 12 or the display module 11. When the processor 12 executes the application stored in the memory 13, video data signals and / or input control signals are transmitted to the display module 11, and the display module 11 can process the received signals to output video information through the display screen.

[0171] The power module 14 may include a power supply module and a power conversion module. The power supply module may be such as a power adapter or a battery device, and the power conversion module may convert the power supplied by the power supply module into the power required for the operation of the electronic device 10.

[0172] According to the above embodiments, at least one of the components of the electronic device 10 may be included within the display device. Additionally, some of the modules functionally included in a single module may be integrated into the display device, while other modules may be provided separately from the display device. In embodiments, for example, the display device may include a display module 11, while the processor 12, memory 13, and power module 14 may be provided as other devices within the electronic device 10 that are not part of the display device.

[0173] Figure 13 Schematic diagrams of electronic devices according to various embodiments are shown.

[0174] refer to Figure 13The various electronic devices with display devices in the embodiments may include not only image display electronic devices, such as smartphones 10_1a, tablet computers 10_1b, laptop computers 10_1c, televisions 10_1d, or desktop monitors 10_1e, but also wearable electronic devices with display modules, such as smart glasses 10_2a, head-mounted displays 10_2b, or smartwatches 10_2c, as well as in-vehicle electronic devices with display modules 10_3, such as those placed on the car dashboard, center console, central information display (CID), interior mirror display, etc.

[0175] Although embodiments of the present disclosure have been described in detail, the scope of the disclosure is not limited to these embodiments. Various changes and modifications made by those skilled in the art using the basic concept of the present disclosure as defined in the appended claims should be construed as falling within the scope of the present disclosure.

Claims

1. A display device comprising: a substrate; a transistor provided over the substrate; a first electrode electrically connected to the transistor; a pixel-defining layer provided over the first electrode; a light-emitting layer provided in an opening of the pixel-defining layer; a second electrode provided over the light-emitting layer; an encapsulating layer provided over the second electrode; and a main light-blocking layer and a sub-blocking layer provided over the encapsulating layer, wherein a first distance between an inner edge of the sub-blocking layer and an edge of the pixel-defining layer satisfies Formula 1, and a second distance between an outer edge of the sub-blocking layer and the edge of the pixel-defining layer satisfies Formula 2, the first angle is smaller than the second angle, Equation 1 Formula 2 Formula 3 In Equation 1, θ a is a first angle of light emitted outwardly from the display device, In Equation 2, θ b is a second angle of light emitted outward from the display device, in Formulae 1 and 2, N is a number of layers provided between the pixel-defining layer and the main light-blocking layer, 2. The display device according to claim 1, wherein: d in Equation 1 and Equation 2 n is determined by the following Equation 3, Equation 3 In Equation 3, t n is the thickness of the nth layer, and θ n is determined by Equation 4 below, and Equation 4 where, in Equation 4, n n+1 is 1. the main light-blocking layer and the sub-blocking layer are spaced apart from each other, and a planar shape of an opening of the main light-blocking layer and a planar shape of the sub-blocking layer are circular.

3. The display device according to claim 2, wherein: the main light-blocking layer surrounds the sub-blocking layer.

4. The display device according to claim 1, wherein: the display device defines a red light-emitting region, a green light-emitting region, and a blue light-emitting region, and the sub-blocking layer overlaps with the red light-emitting region.

5. The display device according to claim 1, wherein: the display device defines a red light-emitting region, a green light-emitting region, and a blue light-emitting region, and the sub-blocking layer includes at least one of: a first sub-blocking layer overlapping with the red light-emitting region, a second sub-blocking layer overlapping with the green light-emitting region, and a third sub-blocking layer overlapping with the blue light-emitting region.

6. The display device according to claim 5, wherein: the sub-blocking layer includes the first sub-blocking layer, the second sub-blocking layer, and the third sub-blocking layer.

7. The display device according to claim 6, wherein: a third distance from one end of the pixel-defining layer to an inner edge of the first sub-blocking layer in the red light-emitting region is smaller than a fourth distance from one end of the pixel-defining layer to an inner edge of the second sub-blocking layer in the green light-emitting region.

8. The display device according to claim 6, wherein: a fifth distance from one end of the pixel-defining layer to an inner edge of the first sub-blocking layer in the red light-emitting region is smaller than a sixth distance from one end of the pixel-defining layer to an inner edge of the third sub-blocking layer in the blue light-emitting region.

9. The display device according to claim 1, further comprising: a color filter provided over the main light-blocking layer.

10. The display device according to claim 9, wherein: the color filter fills a space between the main light-blocking layer and the sub-blocking layer. ​

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