Display device and automobile including the same

Abstract

A display device and an automobile including the same are provided. The display device may include a first substrate; a light emitting layer on the first substrate; and a second substrate on and covering the light emitting layer. The second substrate may include a groove recessed in a direction from a first surface of the second substrate toward a second surface of the second substrate. The second substrate may also include a shutter in the recess.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2024-0146466, filed on October 24, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] This disclosure relates to a display device and / or a vehicle including the display device. Background Technology

[0003] With the development of the information society, the demand for display devices for displaying images is increasing in various forms. Display devices can be displays such as liquid crystal displays, field emission displays, and light-emitting displays. Light-emitting displays can include organic light-emitting displays and / or inorganic light-emitting displays. Organic light-emitting displays include organic light-emitting diode elements as light-emitting elements, and inorganic light-emitting displays include inorganic light-emitting diode elements as light-emitting elements.

[0004] In the case of vehicle displays, if the image displayed on the display in front of the driver or passenger is reflected by the windshield at night, it may interfere with the driver's driving. Therefore, controlling the viewing angle of the image displayed on the vehicle display can be advantageous. Additionally, to protect privacy, controlling the viewing angle of the image displayed on the vehicle display in front of the driver, so as not to provide the image displayed on the vehicle display to passengers, can be advantageous. Summary of the Invention

[0005] This disclosure provides a display device with improved luminous efficiency and / or a vehicle including the display device.

[0006] This disclosure also provides a display device and / or a vehicle including the display device that limits or minimizes visual distortions such as moiré patterns, ghosting, and milky haze.

[0007] However, the aspects of this disclosure are not limited to those set forth herein. These and other aspects of the disclosure will become more apparent to those skilled in the art upon reference to the detailed description of the disclosure given below.

[0008] According to an example embodiment of the present disclosure, a display device may include: a first substrate; a light-emitting layer on the first substrate; and a second substrate on the light-emitting layer and covering the light-emitting layer, wherein the second substrate may include a groove recessed in a direction from a first surface of the second substrate to a second surface of the second substrate, and the second substrate may also include louvers in the groove.

[0009] In an embodiment, the light-emitting layer may include a first emitting region, a second emitting region, and a third emitting region. The second emitting region, the first emitting region, and the third emitting region may be arranged sequentially in one direction. The venetian blinds may include a first venetian blind surrounding the third emitting region in a plan view and a second venetian blind between the first and second emitting regions in a plan view. The size of the third emitting region may be larger than the size of the first and second emitting regions, and the height of the first venetian blind may be greater than the height of the second venetian blind.

[0010] In an embodiment, the distance between the first emission region and the portion of the second louver between the second emission region and the first emission region may be less than the distance between the first emission region and the portion of the first louver between the first emission region and the third emission region.

[0011] In one embodiment, a portion of the first louver may be located between the first emission region and the third emission region, and the distance between the first emission region and a portion of the first louver may be greater than the distance between the third emission region and a portion of the first louver.

[0012] In an embodiment, the size of the first transmitting region may be smaller than the size of the second transmitting region, a portion of the second louver may be located between the first transmitting region and the second transmitting region, and the distance between the first transmitting region and the portion of the second louver located between the first transmitting region and the second transmitting region may be greater than the distance between the second transmitting region and the portion of the second louver located between the first transmitting region and the second transmitting region.

[0013] In one embodiment, the light-emitting layer may include a first emitting region, a second emitting region, a third emitting region, and a dam. The dam may be located between the first, second, and third emitting regions. The louvers may be stacked with the dam.

[0014] In an embodiment, the venetian blinds may not overlap with the first, second, and third emission areas.

[0015] In an embodiment, the light-emitting layer may include a first emitting region, a second emitting region, and a third emitting region. The size of the third emitting region may be larger than the size of the first emitting region and the size of the second emitting region, and at least a portion of the venetian blind may be superimposed on the third emitting region.

[0016] In an embodiment, the venetian blinds may not overlap with the first and second emission areas.

[0017] In this embodiment, the second, first, and third emitting regions can be sequentially arranged in one direction. The venetian blinds may include: a first light-blocking venetian blind between the second and first emitting regions; a second light-blocking venetian blind between the first and third emitting regions; a third light-blocking venetian blind between the third and second emitting regions; and a fourth light-blocking venetian blind stacked on top of the third emitting region. The heights of the first, second, third, and fourth light-blocking venetian blinds may be equal.

[0018] In an embodiment, the distance between the first emitting area and the first light-blocking veneer can be equal to the distance between the first emitting area and the second light-blocking veneer.

[0019] In an embodiment, the distance between the second emitting region and the third light-blocking veneer can be equal to the distance between the second emitting region and the first light-blocking veneer.

[0020] In an embodiment, the distance between the third emitting region and the second light-blocking veneer can be equal to the distance between the third emitting region and the third light-blocking veneer.

[0021] In an embodiment, the distance between the second light-blocking veneer and the fourth light-blocking veneer can be equal to the distance between the fourth light-blocking veneer and the third light-blocking veneer.

[0022] In one embodiment, the polarization layer may be on a second substrate.

[0023] In an embodiment, the first surface of the second substrate may face the first substrate, and the second surface of the second substrate may face the polarization layer.

[0024] In one embodiment, the first surface of the second substrate may face the polarization layer, and the second surface of the second substrate may face the first substrate.

[0025] In an embodiment, the second substrate may further include an outer coating on the first surface, and the outer coating may cover the first surface and the louvers.

[0026] According to an example embodiment of this disclosure, a display device may include: a display substrate, including a first substrate, a thin-film transistor layer on the first substrate, and a light-emitting element layer on the thin-film transistor layer; and an encapsulation substrate facing the display substrate. A first surface of the encapsulation substrate may face away from a second surface of the encapsulation substrate. The encapsulation substrate may include a light control layer, and the light control layer may include louvers extending in a direction from the first surface of the encapsulation substrate to the second surface of the encapsulation substrate.

[0027] In an embodiment, the light-emitting element layer may include a first emitting region, a second emitting region, and a third emitting region. The second emitting region, the first emitting region, and the third emitting region may be arranged sequentially in one direction. The louvers may include a first louver surrounding the third emitting region in a plan view and a second louver between the first and second emitting regions in a plan view. The size of the third emitting region may be larger than the size of the first and second emitting regions, and the height of the first louver may be greater than the height of the second louver.

[0028] In one embodiment, the light-emitting element layer may include a first emitting region, a second emitting region, a third emitting region, and a dam. The dam may be located between the first, second, and third emitting regions. The louvers may be stacked with the dam.

[0029] In one embodiment, the polarization layer may be on the packaging substrate.

[0030] In an embodiment, the encapsulation substrate may further include an outer coating on a first surface of the encapsulation substrate, and the outer coating may cover the first surface of the encapsulation substrate and the louvers.

[0031] According to an example embodiment of this disclosure, an automobile may include: a windshield; an instrument panel adjacent to the windshield; and a display device on the instrument panel. The display device may include: a first substrate; a light-emitting layer on the first substrate; and a second substrate on the light-emitting layer and covering the light-emitting layer. The second substrate may include a recess in a direction from a first surface of the second substrate to a second surface of the second substrate. The second substrate may also include louvers within the recess.

[0032] In one embodiment, the dashboard may include a first dashboard configured to be positioned in front of a driver's seat and a second dashboard configured to be positioned in front of a passenger seat. A display device may be located on both the first and second dashboards. The display device may be connected from the first dashboard to the second dashboard.

[0033] The luminous efficiency can be improved by using a display device according to an embodiment of the present disclosure and a vehicle including the display device.

[0034] The display device according to embodiments of the present disclosure and the automobile including the display device can limit and / or minimize visual distortions such as moiré patterns, ghosting, and milky haze.

[0035] However, the effects of this disclosure are not limited to those set forth herein. The above and other aspects of this disclosure will become more apparent to those skilled in the art upon reference to the presented embodiments. Attached Figure Description

[0036] These and / or other aspects will become apparent and more readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a perspective view of an example of an electronic device according to an embodiment; Figure 2 This is a perspective view of a display device according to an embodiment; Figure 3 It is along Figure 2 A sectional view taken by line X1-X1'; Figure 4 This is a cross-sectional view of a display device according to an embodiment; Figure 5 This is a cross-sectional view of a display device according to an embodiment; Figure 6 This is a diagram illustrating the application of the display device according to an embodiment to a vehicle; Figure 7 This is a cross-sectional view of an example of a display substrate according to an embodiment; Figure 8 This is a plan view of an example of a portion of the display area of ​​a display device according to an embodiment; Figure 9 It is along Figure 8 A sectional view taken by line X2-X2'; Figure 10 It is a graph showing the brightness of the display device relative to the viewing angle according to the comparative example; Figure 11 This is a graph showing the brightness of the display device according to an embodiment relative to the viewing angle; Figure 12 This is a cross-sectional view of a display device according to an embodiment; Figure 13 This is a plan view of an example of a portion of the display area of ​​a display device according to an embodiment; Figure 14 It is along Figure 13 A sectional view taken by line X3-X3'; Figure 15 This is a cross-sectional view of a display device according to an embodiment; Figure 16 This is a flowchart illustrating a method for manufacturing a display device according to an embodiment; Figure 17 It is shown Figure 16 The sectional view of operation S110; Figure 18 It is shown Figure 16 The sectional view of operation S120; Figure 19 It is shown Figure 16 The sectional view of operation S130; Figure 20 It is shown Figure 16 The sectional view of operation S140; Figure 21 This is a flowchart illustrating a method for manufacturing a display device according to an embodiment; Figure 22 It is shown Figure 21 The sectional view of operation S210; Figure 23 It is shown Figure 21 The sectional view of operation S220; Figure 24 It is shown Figure 21 The sectional view of operation S230; and Figure 25 It is shown Figure 21 The sectional view of operation S240. Detailed Implementation

[0037] The exemplary embodiments will now be described more fully below with reference to the accompanying drawings, in which some exemplary embodiments are illustrated. However, the exemplary embodiments may be implemented in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.

[0038] It will also be understood that when a layer is referred to as being "on" another layer or substrate, the layer may be directly on said other layer or substrate, or an intervening layer may be present. Throughout the specification, the same reference numerals indicate the same components.

[0039] Although the term “equal to” is used in the description of the example embodiments, it should be understood that some imprecision may exist. Therefore, when an element is said to be “equal to” another element, it should be understood that the element or value may be “equal to” the other element within the expected range of manufacturing or operating tolerances (e.g., ±10%).

[0040] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0041] Figure 1 This is a perspective view of an example of electronic device 1 according to an embodiment.

[0042] Reference Figure 1Electronic device 1 displays moving and / or still images. Electronic device 1 can refer to any electronic device that provides a display screen. Examples of electronic device 1 may include televisions, laptop computers, monitors, billboards, Internet of Things (IoT) devices, mobile phones, smartphones, tablet PCs, electronic watches, smartwatches, watch phones, head-mounted displays, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation devices, game consoles, digital cameras, camcorders, and automobiles. Figure 1 The image shows an example of a car as an electronic device 1.

[0043] Electronic device 1 may include display device 10 providing a display screen. Examples of display device 10 may include inorganic light-emitting diode display devices, organic light-emitting diode display devices, quantum dot light-emitting diode display devices, plasma display panels, and field emission display devices. The following describes an example of using an organic light-emitting diode display device as a display device 10, but this disclosure is not limited to this, and other display devices may also be applied, provided the same technical spirit applies.

[0044] The shape of electronic device 1 can be changed in various ways. For example, as Figure 1 As shown, when electronic device 1 is a car, it may include a windshield W, an instrument panel DB, and a center console CCS. The shapes of the windshield W, instrument panel DB, and center console CCS of electronic device 1 can be varied according to the shape of the vehicle body.

[0045] The windshield W can be a transparent structure located in front of the driver's seat and passenger seat. The windshield W protects the driver and passengers from external factors while the vehicle is in motion.

[0046] The dashboard (DB) can provide the driver and other passengers with various information about the vehicle's infotainment system. A vehicle infotainment system refers to a system that provides information and entertainment to the driver and other passengers by integrating in-vehicle and external systems. A vehicle infotainment system may include devices or technologies that provide internet browsing, movies, games, television, social networking services (SNS), and various services linked to navigation devices and mobile devices within the vehicle.

[0047] The dashboard DB may include a first dashboard DB1 located in front of the driver's seat, a second dashboard DB2 located in front of the passenger seat, and a third dashboard DB3 located between the first dashboard DB1 and the second dashboard DB2.

[0048] In an embodiment, the first instrument panel DB1 may include an instrument panel or similar device to provide the driver with various information required for driving, such as speed information and vehicle status information. For example, the first instrument panel DB1 may include a digital cluster.

[0049] In this embodiment, the third instrument panel DB3 can provide map information, music information, temperature information, etc. The third instrument panel DB3 can provide various functions that allow operation of convenient features of the driver-assistance vehicle. For example, the third instrument panel DB3 may include a central information display (CID).

[0050] In one embodiment, the second instrument panel DB2 can provide the aforementioned information from the first instrument panel DB1 and the third instrument panel DB3 to a passenger at the passenger seat. For example, the second instrument panel DB2 may include a passenger-side display.

[0051] The central control console (CCS) can be located below the third instrument panel (DB3). The CCS can be positioned between the driver's seat and the passenger seat. In embodiments, the CCS may include various functional components (such as a gearshift lever, parking brake, and driving mode operation buttons) for controlling the way the vehicle is driven. The accompanying drawings illustrate, by way of example, a simulated operation method involving physically manipulating the gearshift lever, etc. However, this disclosure is not limited thereto. For example, since the display device 10 includes input devices such as a touch panel, digital operation methods can also be used via operation buttons displayed on the display device 10.

[0052] Information provided on any of the first dashboard DB1 through the third dashboard DB3 and the center console CCS need not be provided only on the aforementioned components. Information provided on any of the first dashboard DB1 through the third dashboard DB3 and the center console CCS may also be provided on other components.

[0053] According to the embodiment, the electronic device 1 can provide various information to the user through the display device 10 disposed on the first instrument panel DB1 to the third instrument panel DB3 and the central console CCS, or can operate other components included in the electronic device 1 based on the information input by the user through the display device 10.

[0054] Figure 2 This is a perspective view of the display device 10 according to an embodiment. Figure 3 It is along Figure 1 A sectional view taken by line X1-X1'. Figure 4 This is a cross-sectional view of the display device 10_1 according to an embodiment.

[0055] Apart from Figure 1 In addition, refer to Figures 2 to 4In an embodiment, the display device 10 may be rectangular in plan view. The display device 10 may include two long sides extending in a first direction DR1 and two short sides extending in a second direction DR2 intersecting the first direction DR1. Each corner where the long and short sides intersect may be a right angle. However, this disclosure is not limited thereto, and each corner may also form a curved surface. Furthermore, in an embodiment, the long sides may optionally extend in the second direction DR2, and the short sides may optionally extend in the first direction DR1.

[0056] In the accompanying drawings, the first direction DR1 and the second direction DR2 are horizontal directions that intersect each other. For example, the first direction DR1 and the second direction DR2 may be orthogonal to each other. Additionally, the third direction DR3 may intersect the first direction DR1 and the second direction DR2. For example, the third direction DR3 may be a vertical direction and may be orthogonal to the first direction DR1 and the second direction DR2. Unless otherwise defined, in this specification, the direction indicated by the arrow from each of the first directions DR1 to the third direction DR3 may be referred to as one side, and the opposite direction may be referred to as the other side. Furthermore, in this specification, "on," "upper side," "above," "top," and "upper surface" refer to the direction along which the arrow of the third direction DR3 points in the accompanying drawings, while "below," "lower side," "below," "bottom," and "lower surface" refer to the direction opposite to the direction along which the arrow of the third direction DR3 points in the accompanying drawings.

[0057] The planar shape of the display device 10 is not limited to the examples described above, and may also be circular or other shapes. For example, as Figure 1 As shown, when the display device 10 is integrally mounted on the instrument panel DB and the center console CCS of the electronic device 1, the display device 10 may have a shape corresponding to the shape of the instrument panel DB and the center console CCS.

[0058] The display device 10 may include a display area DA for displaying images and a non-display area NDA for not displaying images. In an embodiment, the non-display area NDA may be located around the display area DA, and may surround the display area DA.

[0059] In an embodiment, such as Figure 3 As shown, the display device 10 may include a display substrate 100 and an encapsulation substrate 200 facing the display substrate 100. The display device 10 may also include a sealing portion 400 and a filler 300, the sealing portion 400 being able to bond the display substrate 100 and the encapsulation substrate 200 together. The filler 300 being able to fill the space between the display substrate 100 and the encapsulation substrate 200.

[0060] The display substrate 100 may include elements and circuitry for displaying images (e.g., pixel circuitry such as switching elements, pixel-defining layers defining emitting and non-emitting regions (described later) in the display area DA, and self-emissive elements). In embodiments, each of the self-emissive elements may include at least one of organic light-emitting diodes, quantum dot light-emitting diodes, inorganic material-based micro-light-emitting diodes (e.g., micro-LEDs), and inorganic material-based nano-light-emitting diodes (e.g., nano-LEDs). For ease of description, the case where the self-emissive element is an organic light-emitting diode will be described below as an example.

[0061] The encapsulation substrate 200 may be located on and facing the display substrate 100. In some embodiments, the encapsulation substrate 200 may transmit light emitted from the display substrate 100. In some embodiments, the encapsulation substrate 200 may include a color conversion pattern that converts the color of the incident light. For example, the color conversion pattern may include at least any one of a color filter and a wavelength conversion pattern.

[0062] A sealing portion 400 may be located between the display substrate 100 and the package substrate 200 in the non-display area NDA. The sealing portion 400 may be disposed along the edges of the display substrate 100 and the package substrate 200 in the non-display area NDA to surround the display area DA in a plan view. The display substrate 100 and the package substrate 200 may be joined to each other through the sealing portion 400.

[0063] In embodiments, the sealing portion 400 may be made of an organic material. For example, the sealing portion 400 may be made of an epoxy resin. However, this disclosure is not limited thereto. In embodiments, the sealing portion 400 may include a glass frit.

[0064] The filler 300 may be located in the space surrounded by the sealed portion 400 between the display substrate 100 and the encapsulation substrate 200. The filler 300 may fill the space between the display substrate 100 and the encapsulation substrate 200.

[0065] In this embodiment, the filler 300 may be made of a light-transmitting material. In this embodiment, the filler 300 may be made of an organic material. For example, the filler 300 may be, but is not limited to, made of silicone-based organic materials or epoxy-based organic materials. In this embodiment, the filler 300 may also be omitted.

[0066] In an embodiment, such as Figure 4As shown, the display device 10_1 may not include the sealing portion 400. The encapsulation substrate 200_1 may include a protrusion disposed along the periphery of the encapsulation substrate 200_1 and protruding toward the display substrate 100 on a third-direction DR3, and a recess surrounded by the protrusion. The recess may be sealed by the display substrate 100, the encapsulation substrate 200_1, and the protrusion. Filler 300 may fill the recess.

[0067] In some embodiments, the upper surface of the display substrate 100 and the lower surface of the protrusion of the encapsulation substrate 200_1 can be joined together by an adhesive element. Alternatively, the upper surface of the display substrate 100 and the lower surface of the protrusion of the encapsulation substrate 200_1 can be joined together by a joining method such as laser bonding.

[0068] Figure 5 This is a cross-sectional view of the display device 10 according to an embodiment.

[0069] Reference Figure 5 The display device 10 may include a display substrate 100, an encapsulation substrate 200, and a polarizing layer POL.

[0070] The display substrate 100 may include a substrate component 110, a thin film transistor layer 120, a light-emitting element layer 130, and a thin film encapsulation layer 140.

[0071] The substrate component 110 may include a substrate. The substrate may be made of an insulating material such as glass, quartz, or a polymer resin. The polymer resin may be, for example, polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl compounds, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or combinations thereof. Optionally, the substrate may include a metallic material.

[0072] The substrate can be a rigid substrate or a flexible substrate that can be bent, folded, or rolled. When the substrate is a flexible substrate, it can be, but is not limited to, made of polyimide (PI).

[0073] Thin-film transistor layer 120 can be disposed on substrate member 110. In thin-film transistor layer 120, not only thin-film transistors for pixels PX can be formed, but also scan lines, data lines, power lines, scan control lines, and connection lines connecting pads (also called solder pads or bonding pads) and data lines can be formed. Each of the thin-film transistors may include a gate electrode, a semiconductor layer, a source electrode, and a drain electrode.

[0074] The thin-film transistor layer 120 can be disposed in the display area DA and the non-display area NDA. For example, the thin-film transistors, scan lines, data lines, and power lines of the pixel PX of the thin-film transistor layer 120 can be disposed in the display area DA. The scan control lines and link lines of the thin-film transistor layer 120 can be disposed in the non-display area NDA.

[0075] The light-emitting element layer 130 may be disposed on the thin-film transistor layer 120. The light-emitting element layer 130 may include light-emitting elements of pixels PX, each comprising a first electrode, a light-emitting layer, and a second electrode, as well as a pixel defining layer defining the pixels PX. The light-emitting layer may be an organic light-emitting layer comprising organic materials. In this case, the light-emitting layer may include a hole transport layer, an organic light-emitting layer, and an electron transport layer. When a desired voltage and / or optionally a predetermined voltage is applied to the first electrode and a cathode voltage is applied to the second electrode through the thin-film transistors of the thin-film transistor layer 120, holes and electrons move through the hole transport layer and electron transport layer, respectively, to the organic light-emitting layer, and recombine together in the organic light-emitting layer to emit light. The light-emitting elements of the pixels PX of the light-emitting element layer 130 may be disposed in the display area DA.

[0076] In some embodiments, each pixel PX may include a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3. Each of the first sub-pixels SP1 to the third sub-pixels SP3 may be defined as the smallest region for output light. The first sub-pixel SP1 may emit light of a first color or red light, the second sub-pixel SP2 may emit light of a second color or green light, and the third sub-pixel SP3 may emit light of a third color or blue light, but this disclosure is not limited thereto. The red band may be a band of about 600 nm to about 750 nm, the green band may be a band of about 480 nm to about 560 nm, and the blue band may be a band of about 370 nm to about 460 nm, but this disclosure is not limited thereto.

[0077] Although the number of subpixels included in each pixel PX in the accompanying drawings is three, this disclosure is not limited thereto, and the number of subpixels included in each pixel PX may be more than three.

[0078] A thin-film encapsulation layer 140 may be disposed on the light-emitting element layer 130. The thin-film encapsulation layer 140 can restrict and / or prevent oxygen or moisture from penetrating into the light-emitting element layer 130. For this purpose, the thin-film encapsulation layer 140 may include at least one inorganic layer. The inorganic layer may be, but is not limited to, a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. Additionally, the thin-film encapsulation layer 140 can protect the light-emitting element layer 130 from foreign matter such as dust. For this purpose, the thin-film encapsulation layer 140 may include at least one organic layer. The organic layer may be, but is not limited to, an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0079] The thin-film encapsulation layer 140 can be disposed in both the display area DA and the non-display area NDA. For example, the thin-film encapsulation layer 140 can cover the light-emitting element layer 130 of the display area DA and the thin-film transistor layer 120 of the non-display area NDA.

[0080] The display device 10 may include an encapsulation substrate 200 having a light control layer LCL internally therein. The encapsulation substrate 200 may be disposed on the display substrate 100. The encapsulation substrate 200 may be disposed on the substrate member 110 to cover the thin film transistor layer 120, the light-emitting element layer 130, and the thin film encapsulation layer 140.

[0081] The encapsulation substrate 200 may include a light control layer LCL. The encapsulation substrate 200 may include a recessed groove GRV (see [reference needed]) in a direction from one surface of the encapsulation substrate 200 to another surface (e.g., in the thickness direction (or third direction DR3)). Figure 9 ) and set in the groove of the GRV (see Figure 9 The louver in LV (see) Figure 9 Groove GRV (see) Figure 9 ) and Venetian blinds LV (see Figure 9 It can be included in the light control layer LCL.

[0082] The light control layer LCL can be stacked with the display area DA. The light control layer LCL can absorb or block light emitted from the light-emitting element layer 130 that travels at a specific angle to the third-direction DR3. In other words, the light control layer LCL can control the viewing angle.

[0083] In the display device 10 according to the present embodiment, since the light control layer LCL is internalized in the encapsulation substrate 200, the thickness and manufacturing cost of the display device 10 can be reduced compared to attaching a separate light control film.

[0084] A polarizing layer (POL) can be disposed on the packaging substrate 200. The polarizing layer (POL) can block external light reflected from the thin-film packaging layer 140, the light-emitting element layer 130, the thin-film transistor layer 120 and their interfaces, thereby limiting and / or preventing the reduction in image visibility due to the reflection of external light.

[0085] In the display device 10 according to the current embodiment, since the light control layer LCL is internalized in the encapsulation substrate 200, visual distortion can be limited and / or minimized compared to when the light control film is attached to the polarization layer POL. For example, since the light control layer LCL is disposed below the polarization layer POL, the distance between the light control layer LCL and the light-emitting element layer 130 in the third direction DR3 can be reduced, thereby limiting or minimizing ghosting. In addition, since the polarization layer POL is disposed above the light control layer LCL, the milky white haze phenomenon caused by the reflection of external light can be limited and / or minimized.

[0086] Although not shown in the accompanying drawings, the display device 10 may also include a cover window. The cover window may be additionally disposed on the polarizing layer POL. In this case, the polarizing layer POL and the cover window can be attached by a transparent adhesive member such as an optically transparent adhesive (OCA) film.

[0087] Figure 6 This is a diagram illustrating the application of the display device 10 in a vehicle according to an embodiment.

[0088] Apart from Figure 5 In addition, refer to Figure 6 The display device 10 according to the embodiment can be, for example, a display device applied to an automobile. The automobile may include a body forming the exterior of the automobile and an interior space defined by the body. The body may include a windshield W that protects the driver PS1 and passenger PS2 from external influences and provides a view to the driver PS1. The display device 10 may be disposed in the interior space as shown in the accompanying drawings.

[0089] In some embodiments, the display device 10 may be disposed on a dashboard DB disposed in the interior space. For example, such as Figure 6 As shown, the display device 10 can extend from the dashboard DB located in front of the driver's seat to the dashboard DB located in front of the passenger seat. For example, the display device 10 can be an integrated display that connects (or extends continuously) from the dashboard DB located in front of the driver's seat to the dashboard DB located in front of the passenger seat.

[0090] In this configuration, the display device 10 may include a first display area DA1 located in front of the driver's seat and a second display area DA2 located in front of the passenger seat. The first display area DA1 may be positioned on the instrument panel DB in front of the driver's seat to provide speed information, etc., to the driver PS1, and the second display area DA2 may be positioned on the instrument panel DB in front of the passenger seat to provide entertainment information, etc., to the passenger PS2. Although not shown in the accompanying drawings, a third display area may also be included between the first display area DA1 and the second display area DA2.

[0091] In another example, the display device 10 may be disposed on each of the instrument panel DB located in front of the driver's seat and the instrument panel DB located in front of the passenger seat. For example, a first display device may be disposed on the instrument panel DB located in front of the driver's seat, and a second display device may be disposed on the instrument panel DB located in front of the passenger seat.

[0092] The driver PS1 can identify (or view) the display screen of the display device 10 by the light LGTO_1 emitted from the display device 10 in front of the driver's seat. However, some light LGT1 emitted from the display device 10 in front of the driver's seat may be reflected back to the driver PS1 by the surrounding windshield W. In this case, the image reflected in the windshield W may interfere with the driver PS1's driving. On the other hand, according to the embodiment, the display device 10 adjusts the viewing angle (especially the vertical viewing angle) of the light emitted from the display device 10 relative to the forward direction (direction facing the driver PS1), thereby limiting and / or preventing some light LGT1 emitted from the display device 10 in front of the driver's seat from being reflected back to the driver PS1 by the surrounding windshield W.

[0093] Passenger PS2 can recognize (or view) the display screen of display device 10 by the light LGTO_2 emitted from display device 10 in front of passenger seat. However, some light LGT2 emitted from display device 10 in front of passenger seat may be directed towards driver PS1. In this case, if the car is in motion, driver PS1's field of vision may be limited for reasons such as safety. However, according to the embodiment, display device 10 can adjust the viewing angle (especially the horizontal viewing angle) of the light emitted from display device 10 relative to the forward direction (direction towards passenger PS2), thereby limiting and / or preventing some light LGT2 emitted from display device 10 in front of passenger seat from being directed towards driver PS1.

[0094] In the accompanying drawings, the display device 10 in front of the driver's seat adjusts the vertical viewing angle, and the display device 10 in front of the passenger seat adjusts the horizontal viewing angle. However, this disclosure is not limited to this. For example, the display device 10 in front of the driver's seat may also adjust the horizontal viewing angle, and the display device 10 in front of the passenger seat may also adjust the vertical viewing angle. For another example, each of the display device 10 in front of the driver's seat and the display device 10 in front of the passenger seat may adjust both the vertical and horizontal viewing angles.

[0095] The viewing angle can be adjusted via the light control layer (LCL). The viewing angle can be limited to a desired angular range and / or optionally predetermined angular range via the light control layer (LCL). For example, when an imaginary line extending in a direction perpendicular to the display surface of the display device 10 and facing the driver PS1 or passenger PS2 is considered a normal, the viewing angle can be an angle within 35 degrees from the normal. In some embodiments, an angle within 35 degrees from the normal can be defined as an effective viewing angle, but this disclosure is not limited thereto.

[0096] Figure 7 This is a cross-sectional view of an example of a display substrate 100 according to an embodiment.

[0097] Reference Figure 7 The display substrate 100 may include a substrate component 110, a thin film transistor layer 120, a light-emitting element layer 130, and a thin film encapsulation layer 140.

[0098] The substrate component 110 may include a first substrate SUB1, a first buffer layer BF1 disposed on the first substrate SUB1, and a second substrate SUB2 disposed on the first buffer layer BF1.

[0099] The first substrate SUB1 and the second substrate SUB2 can be made of an insulating material such as glass, quartz, or polymer resin. The polymer resin can be, for example, polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl compounds, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or combinations thereof. Optionally, the first substrate SUB1 and the second substrate SUB2 may include a metallic material.

[0100] The first substrate SUB1 and the second substrate SUB2 can be rigid substrates or flexible substrates that can be bent, folded, or rolled. When the first substrate SUB1 and the second substrate SUB2 are flexible substrates, they can be, but are not limited to, made of polyimide (PI).

[0101] The first buffer layer BF1 is a layer used to protect the first thin-film transistor ST1 and the light-emitting layer 172 from moisture introduced through the moisture-permeable first substrate SUB1 and the second substrate SUB2. The first buffer layer BF1 may be composed of (or include) a plurality of alternately stacked inorganic layers. For example, the first buffer layer BF1 may be a multilayer in which one or more inorganic layers selected from silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, and aluminum oxide are alternately stacked.

[0102] The thin-film transistor layer 120 may include a bottom metal layer BML, a second buffer layer BF2, a first thin-film transistor ST1, a first gate insulating layer GI1, a first interlayer insulating layer 141, a first capacitor electrode CAE1, a second interlayer insulating layer 142, a first anode connection electrode ANDE1, a first organic layer 160, a second anode connection electrode ANDE2, and a second organic layer 180.

[0103] A bottom metal layer (BML) can be disposed on the second substrate (SUB2). The bottom metal layer (BML) can be stacked on the third-direction DR3 with the first active layer ACT1 of the first thin-film transistor (ST1) to limit and / or prevent leakage current when light is incident on the first active layer ACT1 of the first thin-film transistor (ST1). Each of the bottom metal layers (BML) can be a single layer or multiple layers made of any one or more of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof. The bottom metal layer (BML) can be omitted.

[0104] The second buffer layer BF2 can be disposed on the bottom metal layer BML. The second buffer layer BF2 is a layer used to protect the first thin-film transistor ST1 and the light-emitting layer 172 from moisture introduced through the moisture-sensitive first substrate SUB1 and the second substrate SUB2. The second buffer layer BF2 can be composed of (or include) a plurality of alternately stacked inorganic layers. For example, the second buffer layer BF2 can be a multilayer in which one or more inorganic layers selected from silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, and aluminum oxide are alternately stacked.

[0105] The first active layer ACT1 of the first thin-film transistor ST1 can be disposed on the second buffer layer BF2. The first active layer ACT1 of the first thin-film transistor ST1 includes polycrystalline silicon, monocrystalline silicon, low-temperature polycrystalline silicon, amorphous silicon, or oxide semiconductor. The first active layer ACT1 of the first thin-film transistor ST1, which is not covered by the first gate insulating layer GI1, can be doped with impurities or ions to achieve conductivity. Therefore, a first source electrode TS1 and a first drain electrode TD1 can be formed in the first active layer ACT1 of the first thin-film transistor ST1.

[0106] The first gate insulating layer GI1 can be disposed on the first active layer ACT1 of the first thin-film transistor ST1. Figure 7In the first thin-film transistor ST1, a first gate insulating layer GI1 is disposed between the first gate electrode TG1 and the first active layer ACT1. However, this disclosure is not limited thereto. The first gate insulating layer GI1 may also be disposed between the first interlayer insulating layer 141 and the first active layer ACT1, and between the first interlayer insulating layer 141 and the second buffer layer BF2. Each of the first gate insulating layers GI1 may be made of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer).

[0107] The first gate electrode TG1 of the first thin-film transistor ST1 may be disposed on the first gate insulating layer GI1. The first gate electrode TG1 of the first thin-film transistor ST1 may be stacked on the third-direction DR3 with the first active layer ACT1. Each of the first gate electrodes TG1 of the first thin-film transistor ST1 may be a single layer or multiple layers made of any one or more of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu) and alloys thereof.

[0108] The first interlayer insulating layer 141 may be disposed on the first gate electrode TG1 of the first thin-film transistor ST1. The first interlayer insulating layer 141 may be made of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer). The first interlayer insulating layer 141 may include multiple inorganic layers.

[0109] The first capacitor electrode CAE1 may be disposed on the first interlayer insulating layer 141. The first capacitor electrode CAE1 may be stacked on the third-direction DR3 with the first gate electrode TG1 of the first thin-film transistor ST1. Since the first interlayer insulating layer 141 has a desired dielectric constant and / or optionally a predetermined dielectric constant, the capacitor may be formed by the first capacitor electrode CAE1, the first gate electrode TG1, and the first interlayer insulating layer 141 disposed therebetween. Each of the first capacitor electrodes CAE1 may be a single layer or multiple layers made of any one or more of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0110] The second interlayer insulating layer 142 can be disposed on the first capacitor electrode CAE1. The second interlayer insulating layer 142 can be made of an inorganic layer (e.g., a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer). The second interlayer insulating layer 142 may include multiple inorganic layers.

[0111] The first anode connection electrode ANDE1 can be disposed on the second interlayer insulating layer 142. Each of the first anode connection electrodes ANDE1 can be connected to the first drain electrode TD1 of the first thin film transistor ST1 through a first anode contact hole ANCT1 that penetrates the first interlayer insulating layer 141 and the second interlayer insulating layer 142 to expose the first drain electrode TD1 of the first thin film transistor ST1. Each of the first anode connection electrodes ANDE1 can be a single layer or multiple layers made of any one or more of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0112] A first organic layer 160 for planarization may be disposed on the first anode connection electrode ANDE1. The first organic layer 160 may be made of an organic layer such as acrylic resin, epoxy resin, phenolic resin, polyamide resin or polyimide resin.

[0113] The second anode connection electrode ANDE2 can be disposed on the first organic layer 160. Each of the second anode connection electrodes ANDE2 can be connected to the first anode connection electrode ANDE1 through a second anode contact hole ANCT2 that penetrates the first organic layer 160 to expose the first anode connection electrode ANDE1. Each of the second anode connection electrodes ANDE2 can be a single layer or multiple layers made of any one or more of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0114] The second organic layer 180 can be disposed on the second anode connection electrode ANDE2. The second organic layer 180 can be made of an organic layer such as acrylic resin, epoxy resin, phenolic resin, polyamide resin or polyimide resin.

[0115] exist Figure 7 In this embodiment, the first thin-film transistor ST1 is formed as a top-gate structure in which the first gate electrode TG1 is located above the first active layer ACT1. However, this disclosure is not limited thereto. The first thin-film transistor TFT1 may also be formed as a bottom-gate structure in which the first gate electrode TG1 is located below the first active layer ACT1, or as a dual-gate structure in which the first gate electrode TG1 is located both above and below the first active layer ACT1.

[0116] The light-emitting element layer 130 may be disposed on the second organic layer 180. The light-emitting element layer 130 may include light-emitting elements 170 and 190. Each of the light-emitting elements 170 may include a first light-emitting electrode 171, a light-emitting layer 172, and a second light-emitting electrode 173.

[0117] The first light-emitting electrode 171 can be formed on the second organic layer 180. The first light-emitting electrode 171 can be connected to the second anode connection electrode ANDE2 through a third anode contact hole ANCT3 that penetrates the second organic layer 180 to expose the second anode connection electrode ANDE2.

[0118] In the top-emitting structure in which light is emitted from the light-emitting layer 172 to the second light-emitting electrode 173, the first light-emitting electrode 171 can be made of a metallic material with high reflectivity (such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and indium tin oxide (ITO / Al / ITO), an APC alloy, or a stacked structure of APC alloy and indium tin oxide (ITO / APC / ITO)). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0119] A dam 190 may be formed on the second organic layer 180 to separate the first light-emitting electrode 171 from another first light-emitting electrode 171, thereby defining each emission region EA. The dam 190 may include openings that expose at least a portion of the upper surface of the first light-emitting electrode 171. The dam 190 may be formed to cover the edge of the first light-emitting electrode 171. The dam 190 may be made of an organic layer such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin.

[0120] Each emission region EA is a region in which a first light-emitting electrode 171, a light-emitting layer 172, and a second light-emitting electrode 173 are sequentially stacked such that holes from the first light-emitting electrode 171 and electrons from the second light-emitting electrode 173 recombine with each other in the light-emitting layer 172 to emit light. The emission region EA may be defined by an opening in a dam 190.

[0121] A light-emitting layer 172 is formed on the side surfaces of the first light-emitting electrode 171 and the dam 190. The light-emitting layer 172 may be disposed in each opening of the dam 190, but this disclosure is not limited thereto. The light-emitting layer 172 may include organic materials to emit light of a desired color and / or optionally predetermined color. For example, the light-emitting layer 172 may include a hole transport layer, an organic light-emitting layer, and an electron transport layer.

[0122] The second light-emitting electrode 173 may be disposed on the light-emitting layer 172. The second light-emitting electrode 173 may be formed to cover the light-emitting layer 172. The second light-emitting electrode 173 may be a common layer formed in all emission regions EA. Although not shown in the figures, in some embodiments, a capping layer may be formed on the second light-emitting electrode 173.

[0123] In the top-emitting structure, the second light-emitting electrode 173 can be made of a transparent conductive oxide (TCO) that transmits light (such as indium tin oxide (ITO) or indium zinc oxide (IZO)) or a semi-transmissive conductive material (such as magnesium (Mg), silver (Ag), or an alloy of Mg and Ag). When the second light-emitting electrode 173 is made of a semi-transmissive conductive material, the light output efficiency can be increased through a microcavity.

[0124] A thin-film encapsulation layer 140 may be disposed on the second light-emitting electrode 173. The thin-film encapsulation layer 140 may include at least one inorganic layer to limit and / or prevent oxygen or moisture from penetrating into the light-emitting element layer 130. Additionally, the thin-film encapsulation layer 140 may include at least one organic layer to protect the light-emitting element layer 130 from foreign matter such as dust. For example, the thin-film encapsulation layer 140 may include a first encapsulation layer TFE1, a second encapsulation layer TFE2, and a third encapsulation layer TFE3.

[0125] A first encapsulation layer TFE1 (e.g., a first inorganic encapsulation layer) may be disposed on the second light-emitting electrode 173. The first encapsulation layer TFE1 may be a single inorganic layer or multiple inorganic layers. The first encapsulation layer TFE1 may be a multilayer or a single layer in which one or more inorganic layers selected from silicon nitride layers, silicon oxynitride layers, silicon oxide layers, titanium oxide layers and aluminum oxide layers are stacked alternately.

[0126] A second encapsulation layer TFE2 (e.g., a first organic encapsulation layer) may be disposed on the first encapsulation layer TFE1. The second encapsulation layer TFE2 may be a single organic layer or multiple organic layers. The second encapsulation layer TFE2 may include polymeric materials. Polymeric materials may include polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyacrylate, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate, polyacrylic acid, etc.) or any combination thereof.

[0127] A third encapsulation layer TFE3 (e.g., a second inorganic encapsulation layer) may be disposed on the second encapsulation layer TFE2. The third encapsulation layer TFE3 may be a single inorganic layer or multiple inorganic layers. The third encapsulation layer TFE3 may comprise the same material as the first encapsulation layer TFE1. For example, the third encapsulation layer TFE3 may be a multilayer or a single layer in which one or more inorganic layers selected from silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, and aluminum oxide layers are alternately stacked.

[0128] Figure 8 This is a plan view of an example of a portion of the display area DA of the display device 10 according to an embodiment. Figure 9 It is along Figure 8 The sectional view taken by line X2-X2'.

[0129] Apart from Figures 5 to 7 In addition, refer to Figure 8 and Figure 9 Each pixel PX can include multiple emission regions EA. Each of the emission regions EA can be an area where light generated by the light-emitting element 170 is emitted outward.

[0130] The emission region EA may be defined by the dam 190. For example, each of the emission regions EA may be a region superimposed on the light-emitting layer 172 disposed in the opening of the dam 190. Each of the emission regions EA may be a region in which the first light-emitting electrode 171, the light-emitting layer 172, and the second light-emitting electrode 173 are sequentially stacked and superimposed on each other.

[0131] In some embodiments, the emission region EA may include a first emission region EA1 disposed in a first sub-pixel SP1, a second emission region EA2 disposed in a second sub-pixel SP2, and a third emission region EA3 disposed in a third sub-pixel SP3.

[0132] The first emission region EA1 can emit light of a first color, the second emission region EA2 can emit light of a second color, and the third emission region EA3 can emit light of a third color. The first color of light can be light in the red band, the second color of light can be light in the green band, and the third color of light can be light in the blue band. The red band can be the band from about 600 nm to about 750 nm, the green band can be the band from about 480 nm to about 560 nm, and the blue band can be the band from about 370 nm to about 460 nm, but this disclosure is not limited thereto.

[0133] Each of the first emission regions EA1 to the third emission regions EA3 may have a rectangular, square, or rhomboid planar shape. For example, as shown in the figures, the first emission region EA1 and the second emission region EA2 may have a rectangular shape, and the third emission region EA3 may have a square shape with chamfered corners. However, this disclosure is not limited thereto, and the shape of each of the first emission regions EA1 to the third emission regions EA3 may be changed to a circular shape, an elliptical shape, or other polygonal shapes.

[0134] As shown in the accompanying drawings, a pixel PX may include two first emission regions EA1, two second emission regions EA2, and one third emission region EA3. However, the number of emission regions EA included in a pixel PX is not limited to this and may vary.

[0135] In pixel PX, one of the two first emission regions EA1 can be located on one side of the third emission region EA3 in the fourth direction DR4, and the other can be located on one side of the third emission region EA3 in the fifth direction DR5. Similarly, in pixel PX, one of the two second emission regions EA2 can be located on one side of the third emission region EA3 in the fourth direction DR4, and the other can be located on one side of the third emission region EA3 in the fifth direction DR5.

[0136] In the accompanying drawings, the fourth direction DR4 can be a diagonal direction between the first direction DR1 and the second direction DR2. For example, the fourth direction DR4 can form a 45-degree angle with each of the first direction DR1 and the second direction DR2. The fifth direction DR5 can be a diagonal direction between the first direction DR1 and the second direction DR2. For example, the fifth direction DR5 can form a 45-degree angle with each of the first direction DR1 and the second direction DR2. The fourth direction DR4 and the fifth direction DR5 can intersect each other in the horizontal direction, and can also intersect each of the first direction DR1 and the second direction DR2 in the horizontal direction. For example, the fourth direction DR4 and the fifth direction DR5 can be orthogonal to each other. The fourth direction DR4 and the fifth direction DR5 can intersect with a third direction DR3, for example, they can be orthogonal to the third direction DR3.

[0137] In pixel PX, the first emission region EA1 and the second emission region EA2, located on one side of the third emission region EA3 in the fourth direction DR4, may include a long side extending in the fifth direction DR5 and a short side extending in the fourth direction DR4.

[0138] In pixel PX, the side of the third emission region EA3 located in the fourth direction DR4 can face the long side of the second emission region EA2 in the same pixel PX. In pixel PX, the side of the third emission region EA3 located in the fifth direction DR5 can face the long side of the first emission region EA1 in the same pixel PX.

[0139] In pixel PX, the edge of the third emission region EA3, located on the other side in the fourth direction DR4, can face the short side of each of the first emission regions EA1 and EA2 in the adjacent pixel PX in the opposite direction to the second direction DR2. Similarly, in pixel PX, the edge of the third emission region EA3, located on the other side in the fifth direction DR5, can face the short side of each of the first emission regions EA1 and EA2 in the adjacent pixel PX in the opposite direction to the second direction DR2.

[0140] The arrangement of the emission region EA included in the pixel PX is not limited to the illustration in the figure and can be changed differently.

[0141] The dimensions or areas of the first launch area EA1 to the third launch area EA3 can be different from each other. For example, Figure 8 As shown, the size or area of ​​a third transmission region EA3 can be larger than the size or area of ​​a second transmission region EA2, and the size or area of ​​a second transmission region EA2 can be larger than the size or area of ​​a first transmission region EA1.

[0142] The widths of the first transmission regions EA1 to the third transmission regions EA3 in the fourth direction DR4 can be equal. The widths of the first transmission regions EA1 to the third transmission regions EA3 in the fifth direction DR5 can be different. For example, the width of a third transmission region EA3 in the fifth direction DR5 can be greater than the width of a second transmission region EA2 in the fifth direction DR5, and the width of a second transmission region EA2 in the fifth direction DR5 can be greater than the width of a first transmission region EA1 in the fifth direction DR5.

[0143] The size (e.g., width) or area of ​​the emission region EA included in the pixel PX is not limited to the size (e.g., width) or area shown in the figures, and may vary.

[0144] The display area DA can include a transmissive area OA and a non-transmissive area LSA. The transmissive area OA can be a veil LV area in the plan view without a light control layer LCL. The non-transmissive area LSA can be a veil LV area in the plan view with a light control layer LCL.

[0145] A non-transmissive region LSA can be positioned between emission regions EA. For example, the non-transmissive region LSA can extend along the fourth direction DR4 and the fifth direction DR5, and can be positioned between emission regions EA on the fourth direction DR4 and the fifth direction DR5. The emission regions EA can be surrounded by the non-transmissive region LSA in a plan view.

[0146] In some embodiments, the non-transmissive region LSA may not be superimposed on the emitting region EA. Therefore, the degree to which light emitted from the emitting region EA is blocked by the non-transmissive region LSA can be limited or minimized, thereby improving the luminous efficiency of the display device 10. Additionally, moiré fringe phenomena that may occur when the emitting region EA and the non-transmissive region LSA are superimposed can be limited or minimized due to interference from the non-transmissive region LSA with light emitted from the emitting region EA.

[0147] The transmissive region OA can be the remaining area of ​​the display region DA, excluding the non-transmissive region LSA. The transmissive region OA can be surrounded by the non-transmissive region LSA. The transmissive region OA can be superimposed on the emitting region EA.

[0148] Now refer to Figure 9 Describe the cross-sectional structure of the display device 10.

[0149] The display device 10 may include a display substrate 100, an encapsulation substrate 200, and a polarizing layer POL. Since the display substrate 100 and the polarizing layer POL have already been described above, their descriptions will be omitted.

[0150] The encapsulation substrate 200 may include a light control layer LCL. The light control layer LCL may include a groove GRV recessed from one surface of the encapsulation substrate 200 (e.g., the lower surface in the figure) to another surface (e.g., the upper surface in the figure) and a venetian blind LV disposed in the groove GRV.

[0151] The recessed GRV can be recessed from one surface of the encapsulation substrate 200 (e.g., the surface facing the display substrate 100) to another surface (e.g., the surface facing the polarizing layer POL). The recessed GRV can be manufactured using methods S1 and S2, which will be described later for manufacturing the display device (see...). Figure 16 and Figure 21 It is formed by laser patterning and etching processes.

[0152] The groove GRV may include a first groove GRV1 and a second groove GRV2 with different heights. The height of the first groove GRV1 may be greater than the height of the second groove GRV2. For example, the height of the first groove GRV1 may be a first height H1, and the height of the second groove GRV2 may be a second height H2. The widths of the first groove GRV1 and the second groove GRV2 in the fourth direction DR4 or the fifth direction DR5 may be equal to each other, but this disclosure is not limited thereto.

[0153] The venetian blind LV can be disposed within the recessed GRV. The shape of the venetian blind LV can correspond to the shape of the recessed GRV. The venetian blind LV can be manufactured using display device manufacturing methods S1 and S2, which will be described later (see...). Figure 16 and Figure 21 The ink process is formed in the process of forming the ink.

[0154] Each of the Venetian blinds (LV) can have a tapered shape with a wide bottom and a narrow top. However, this disclosure is not limited to this, and each of the Venetian blinds (LV) can also have a columnar shape with the same width at both the bottom and the top.

[0155] The venetian blind LV can absorb or block light emitted from the first emission region EA1 to the third emission region EA3. The venetian blind LV may include light-blocking organic materials. For example, the light-blocking organic material may be a photosensitive resin that can absorb or block light, and may include organic materials containing organic black pigments such as carbon black.

[0156] In some embodiments, the venetian blinds LV may include a first venetian blind LV1 and a second venetian blind LV2 with different heights. The height of the first venetian blind LV1 may be greater than the height of the second venetian blind LV2. For example, the height of the first venetian blind LV1 may be a first height H1, and the height of the second venetian blind LV2 may be a second height H2. The widths of the first venetian blind LV1 and the second venetian blind LV2 in the fourth direction DR4 or the fifth direction DR5 may be equal to each other, but this disclosure is not limited thereto.

[0157] The louvers LV can be positioned between the emission zones EA. Although not shown in the accompanying drawings, the first emission zones EA1 to the third emission zones EA3 can be spaced apart from each other by the embankment 190. Therefore, the louvers LV can be superimposed on the embankment 190 but not on the first emission zones EA1 to the third emission zones EA3, and can be positioned on the embankment 190.

[0158] In some embodiments, such as Figure 8 As shown, the louver LV surrounding the third transmission region EA3 can be the first louver LV1, and the louver LV disposed on the fourth direction DR4 or the fifth direction DR5 between the first transmission region EA1 and the second transmission region EA2 can be the second louver LV2.

[0159] For example, such as Figure 9 As shown, the venetian blind LV may include a first light-blocking venetian blind LV21 disposed on the fifth direction DR5 between the second emission area EA2 and the first emission area EA1, a second light-blocking venetian blind LV13 disposed on the fifth direction DR5 between the first emission area EA1 and the third emission area EA3, and a third light-blocking venetian blind LV32 disposed on the fifth direction DR5 between the third emission area EA3 and the second emission area EA2.

[0160] The second light-blocking venetian blind LV13 and the third light-blocking venetian blind LV32 can be the first venetian blind LV1 with a first height H1, and the first light-blocking venetian blind LV21 can be the second venetian blind LV2 with a second height H2.

[0161] like Figure 9 As shown, the first light-blocking venetian blind LV21 located on one side of the first emission region EA1 in the fifth direction DR5 can be a second venetian blind LV2 with a low height, and the second light-blocking venetian blind LV13 located on the other side of the first emission region EA1 in the fifth direction DR5 can be a first venetian blind LV1 with a high height. Similarly, the third light-blocking venetian blind LV32 located on one side of the second emission region EA2 in the fifth direction DR5 can be a first venetian blind LV1 with a high height, and the first light-blocking venetian blind LV21 located on the other side of the second emission region EA2 in the fifth direction DR5 can be a second venetian blind LV2 with a low height. Likewise, the second light-blocking venetian blind LV13 located on one side of the third emission region EA3 in the fifth direction DR5 can be a first venetian blind LV1 with a high height, and the third light-blocking venetian blind LV32 located on the other side of the third emission region EA3 in the fifth direction DR5 can be a first venetian blind LV1 with a high height.

[0162] Since the heights of the louvers LV on one side and the other side are different in the first launch area EA1 and the second launch area EA2, the distances from the louvers LV on one side and the other side can also be different. Since the heights of the louvers LV on one side and the other side are the same in the third launch area EA3, the distances from the louvers LV on one side and the other side can also be the same.

[0163] For example, the distance D1R between the first emitting region EA1 and the first light-blocking veneer LV21 in the fifth direction DR5 can be less than the distance D2R between the first emitting region EA1 and the second light-blocking veneer LV13 in the fifth direction DR5. The distance D2G between the second emitting region EA2 and the first light-blocking veneer LV21 in the fifth direction DR5 can be less than the distance D1G between the second emitting region EA2 and the third light-blocking veneer LV32 in the fifth direction DR5. The distance D1B between the third emitting region EA3 and the second light-blocking veneer LV13 in the fifth direction DR5 can be equal to the distance D2B between the third emitting region EA3 and the third light-blocking veneer LV32 in the fifth direction DR5.

[0164] In some embodiments, since the width WR of the first emitting region EA1 in the fifth direction DR5 is smaller than the width WG of the second emitting region EA2 in the fifth direction DR5, the distance D1R between the first emitting region EA1 and the first light-blocking venetian blind LV21 in the fifth direction DR5 can be greater than the distance D2G between the second emitting region EA2 and the first light-blocking venetian blind LV21 in the fifth direction DR5, and the distance D2R between the first emitting region EA1 and the second light-blocking venetian blind LV13 in the fifth direction DR5 can be greater than the distance D1G between the second emitting region EA2 and the third light-blocking venetian blind LV32 in the fifth direction DR5. Since the width WR of the first emitting region EA1 in the fifth direction DR5 and the width WG of the second emitting region EA2 in the fifth direction DR5 are smaller than the width WB of the third emitting region EA3 in the fifth direction DR5, the distance D2R between the first emitting region EA1 and the second light-blocking venetian blind LV13 in the fifth direction DR5 and the distance D1G between the second emitting region EA2 and the third light-blocking venetian blind LV32 in the fifth direction DR5 can be greater than the distance D1B between the third emitting region EA3 and the second light-blocking venetian blind LV13 in the fifth direction DR5 and the distance D2B between the third emitting region EA3 and the third light-blocking venetian blind LV32 in the fifth direction DR5.

[0165] In some embodiments, the widths of the first light-blocking venetian blind LV21, the second light-blocking venetian blind LV13, and the third light-blocking venetian blind LV32 in the fourth direction DR4 or the fifth direction DR5 may be equal to each other. For example, the width W21 of the first light-blocking venetian blind LV21, the width W13 of the second light-blocking venetian blind LV13, and the width W32 of the third light-blocking venetian blind LV32 may be equal to each other. However, this disclosure is not limited to this, and the widths of the venetian blinds LV may also be different from each other.

[0166] In the display device 10 according to the current embodiment, the venetian blind LV surrounding the third emission region EA3, which has a relatively large size or area, is a first venetian blind LV1 with a high height, and the venetian blind LV adjacent to the first emission region EA1 and the second emission region EA2, which have relatively small sizes or areas, is a second venetian blind LV2 with a low height. Therefore, the viewing angle of light emitted from the first emission region EA1 to the third emission region EA3 can be controlled equally. That is, the venetian blind LV adjacent to the third emission region EA3 can be formed high so that the light output rate of the light emitted from the third emission region EA3 is adjusted to the same level as the light output rate of the light emitted from the first emission region EA1 and the second emission region EA2, thereby controlling the viewing angle of light emitted from the first emission region EA1 to the third emission region EA3 equally.

[0167] In addition, since the second louver LV2 with a low height is set on one side of the first emission area EA1, while the first louver LV1 with a high height is set on the other side, the distance between the first emission area EA1 and the second louver LV2 can be smaller than the distance between the first emission area EA1 and the first louver LV1, so as to equally control the viewing angle of the light emitted to one side and the other side of the first emission area EA1.

[0168] Similarly, since the second louver LV2 with a low height is located on the other side of the second emission area EA2, while the first louver LV1 with a high height is located on one side, the distance between the second emission area EA2 and the second louver LV2 can be made smaller than the distance between the second emission area EA2 and the first louver LV1, so as to equally control the viewing angle of the light emitted to one side and the other side of the second emission area EA2.

[0169] As described above, the viewing angle of light emitted from the first emission region EA1 to the third emission region EA3 is controlled equally by using first louvers LV1 and second louvers LV2, which have different heights. Furthermore, the viewing angle of light emitted to one side and the other side of the first emission region EA1 and the second emission region EA2 is controlled equally by differentiating the distances between the first emission region EA1 and the first louvers LV1 and the second louvers LV2, and the distances between the second emission region EA2 and the first louvers LV1 and the second louvers LV2. Therefore, visual distortions such as moiré fringes and milky haze can be limited and / or minimized.

[0170] Figure 10 This is a graph showing the brightness of a display device relative to the viewing angle, based on a comparative example. Figure 11 This is a graph showing the brightness of the display device 10 according to an embodiment relative to the viewing angle.

[0171] Apart from Figure 5 , Figure 8 and Figure 9 In addition, refer to Figure 10 and Figure 11 The reference curve G0 is a curve showing the brightness of a display device without the light control layer LCL relative to the viewing angle. Figure 10 The first curve G1 is a graph showing the brightness of the display device relative to the viewing angle according to the comparison example. Figure 11 The second curve G2 is a curve showing the brightness of the display device 10 according to the embodiment relative to the viewing angle.

[0172] The difference between the display device according to the comparative example and the display device 10 according to the embodiment is that the encapsulation substrate 200 does not include a light control layer LCL (see Figure 5The display device 10 shown in the figure has a separately manufactured light control film attached and placed on the polarization layer POL.

[0173] The light control film, manufactured separately and attached to the display device according to the comparative example, includes louvers shaped as straight lines extending only in the first direction DR1 or the second direction DR2, regardless of the shape and arrangement of the emission area EA. Furthermore, the light control film is typically manufactured by molding rollers, in which case the louvers are formed to have a uniform height.

[0174] Therefore, as Figure 10 As shown in the first curve G1, because the light control film is superimposed on the emission region EA, the display device according to the comparative example exhibits a lower brightness at the front viewing angle (0 degrees on the x-axis of the curve) than the reference curve G0.

[0175] On the other hand, in the display device 10 according to the current embodiment, the display device manufacturing methods S1 and S2, as described later (see...), can be used... Figure 16 and Figure 21 The louvers LV are formed using laser patterning technology, which corresponds to the shape and arrangement of the emission area EA.

[0176] Therefore, as Figure 11 As shown in the second curve G2, the display device 10 according to the embodiment can have a brightness level equivalent to that of the reference curve G0 at the front viewing angle (0 degrees on the x-axis of the curve). Furthermore, since the shape and arrangement of the venetian blinds LV correspond to the shape and arrangement of the emission area EA, moiré fringe phenomena can be limited and / or minimized.

[0177] In the display device according to the comparative example, since the light control film is manufactured separately and attached to the polarizing layer POL, the distance between the light control film and the emissive layer is large, resulting in ghosting and milky haze. On the other hand, in the display device 10 according to the present embodiment, since the light control layer LCL is disposed on the lower surface of the encapsulation substrate 200, the distance between the light control layer LCL and the emissive layer 172 is small, and ghosting and milky haze can be limited and / or minimized.

[0178] In the following description, other embodiments of the display device 10 according to the embodiments will be described. In the following embodiments, elements that are the same as those in the above embodiments will be indicated by the same reference numerals, and their redundant descriptions will be omitted or briefly given, while the differences will be mainly described.

[0179] Figure 12 This is a cross-sectional view of the display device 10 according to an embodiment.

[0180] Reference Figure 12The display device 10 according to the current embodiment and the reference 10 Figure 9 The display device 10 described in the embodiments differs in that it also includes an outer coating OC.

[0181] For example, the encapsulation substrate 200 of the display device 10 may also include an outer coating OC. The outer coating OC may be disposed on the lower surface of the encapsulation substrate 200. The outer coating OC may cover the lower surface of the venetian blind LV and the lower surface of the encapsulation substrate 200.

[0182] Since the display device 10 according to the current embodiment includes an outer coating OC, the durability of the encapsulation substrate 200 and the display device 10 can be improved. The light control layer LCL of the encapsulation substrate 200 can be manufactured according to the display device manufacturing methods S1 and S2 described later (see...). Figure 16 and Figure 21 The louver LV is formed through laser patterning, etching, and ink processes. During these manufacturing processes, the lower surface of the louver LV and the lower surface of the encapsulation substrate 200 may crack or weaken. Therefore, the outer coating OC can be configured to cover the lower surface of the louver LV and the lower surface of the encapsulation substrate 200, thereby improving the durability of the encapsulation substrate 200 and the display device 10.

[0183] Figure 13 This is a plan view of an example of a portion of the display area DA of the display device 10 according to an embodiment. Figure 14 It is along Figure 13 The sectional view taken by line X3-X3'.

[0184] Reference Figure 13 and Figure 14 The display device 10 according to the current embodiment and the reference 10 Figure 9 The display device 10 of the embodiments described above differs in that the display device 10 according to the present embodiment further includes a fourth light-blocking venetian blind LV33, and the venetian blind LV is composed of (or includes) a second venetian blind LV2 having the same height.

[0185] For example, a non-transmissive region LSA can be disposed between emission regions EA and can be superimposed on at least a portion of a third emission region EA3. For example, the non-transmissive region LSA can extend along a fourth direction DR4 and a fifth direction DR5, can be disposed between emission regions EA on the fourth direction DR4 and the fifth direction DR5, and can be superimposed on the third emission region EA3 in a plan view.

[0186] In the accompanying drawings, the non-transmissive region LSA superimposed on the third emission region EA3 is arranged in an "X" shape on the third emission region EA3. However, this disclosure is not limited thereto. For example, the non-transmissive region LSA superimposed on the third emission region EA3 may extend only in the fourth direction DR4 or only in the fifth direction DR5.

[0187] The transmissive region OA can be the remaining area of ​​the display region DA, excluding the non-transmissive region LSA. The transmissive region OA can be surrounded by the non-transmissive region LSA. The transmissive region OA can be superimposed on the emitting region EA.

[0188] In the current embodiment, such as Figure 14 As shown, the venetian blind LV can be composed of (or include) a second venetian blind LV2 having the same height. For example, the venetian blind LV can be composed of (or include) a second venetian blind LV2 having a second height H2.

[0189] In the current embodiment, such as Figure 13 As shown, not only the louvers LV set between the transmission areas EA, but also the louvers LV superimposed on the third transmission area EA3 can be the second louvers LV2.

[0190] For example, with reference Figure 9 The louvers LV of the display device 10 described in the embodiment are the same as those in the example. Figure 14 As shown, the venetian blind LV may include a first light-blocking venetian blind LV21 disposed on the fifth direction DR5 between the second emission area EA2 and the first emission area EA1, a second light-blocking venetian blind LV13 disposed on the fifth direction DR5 between the first emission area EA1 and the third emission area EA3, and a third light-blocking venetian blind LV32 disposed on the fifth direction DR5 between the third emission area EA3 and the second emission area EA2.

[0191] In the current embodiment, the heights of the first light-blocking veneer LV21, the second light-blocking veneer LV13, and the third light-blocking veneer LV32 can all be the same second height H2. That is, the first light-blocking veneer LV21, the second light-blocking veneer LV13, and the third light-blocking veneer LV32 can all be constructed as the second veneer LV2.

[0192] According to reference Figure 9 The venetian blinds LV of the display device 10 described in the present embodiment are different. The venetian blinds LV of the display device 10 according to the present embodiment may also include a fourth light-blocking venetian blind LV33.

[0193] The fourth light-blocking veneer LV33 can be superimposed on the third emission region EA3 in the third direction DR3. The fourth light-blocking veneer LV33 can be positioned between the second light-blocking veneer LV13 and the third light-blocking veneer LV32 in the fifth direction DR5. Like the first light-blocking veneer LV21, the second light-blocking veneer LV13, and the third light-blocking veneer LV32, the fourth light-blocking veneer LV33 can have a second height H2 and can be configured as the second veneer LV2.

[0194] In the current embodiment, since all the louvers LVs on one side and the other side of each of the first transmission regions EA1 to the third transmission regions EA3 have the same height, the distance from the louvers LVs on one side and the other side can also be the same.

[0195] For example, the distance D1R between the first emitting region EA1 and the first light-blocking veneer LV21 in the fifth direction DR5 can be equal to the distance D2R between the first emitting region EA1 and the second light-blocking veneer LV13 in the fifth direction DR5. The distance D2G between the second emitting region EA2 and the first light-blocking veneer LV21 in the fifth direction DR5 can be equal to the distance D1G between the second emitting region EA2 and the third light-blocking veneer LV32 in the fifth direction DR5. The distance D1B between the third emitting region EA3 and the second light-blocking veneer LV13 in the fifth direction DR5 can be equal to the distance D2B between the third emitting region EA3 and the third light-blocking veneer LV32 in the fifth direction DR5.

[0196] In some embodiments, the distance D1L between the second light-blocking venetian blind LV13 and the fourth light-blocking venetian blind LV33 in the fifth direction DR5 can be equal to the distance D2L between the fourth light-blocking venetian blind LV33 and the third light-blocking venetian blind LV32 in the fifth direction DR5.

[0197] However, this disclosure is not limited thereto, and the distance D1L between the second light-blocking veneer LV13 and the fourth light-blocking veneer LV33 in the fifth direction DR5 may also be different from the distance D2L between the fourth light-blocking veneer LV33 and the third light-blocking veneer LV32 in the fifth direction DR5. In this case, the distance D1B between the third emitting region EA3 and the second light-blocking veneer LV13 in the fifth direction DR5 may be different from the distance D2B between the third emitting region EA3 and the third light-blocking veneer LV32 in the fifth direction DR5. For example, when the distance D1L between the second light-blocking venetian blind LV13 and the fourth light-blocking venetian blind LV33 in the fifth direction DR5 is less than the distance D2L between the fourth light-blocking venetian blind LV33 and the third light-blocking venetian blind LV32 in the fifth direction DR5, the distance D1B between the third emitting region EA3 and the second light-blocking venetian blind LV13 in the fifth direction DR5 can be greater than the distance D2B between the third emitting region EA3 and the third light-blocking venetian blind LV32 in the fifth direction DR5. In another example, when the distance D1L between the second light-blocking venetian blind LV13 and the fourth light-blocking venetian blind LV33 in the fifth direction DR5 is greater than the distance D2L between the fourth light-blocking venetian blind LV33 and the third light-blocking venetian blind LV32 in the fifth direction DR5, the distance D1B between the third emitting region EA3 and the second light-blocking venetian blind LV13 in the fifth direction DR5 can be less than the distance D2B between the third emitting region EA3 and the third light-blocking venetian blind LV32 in the fifth direction DR5.

[0198] In some embodiments, the width of the fourth light-blocking venetian blind LV33 in the fourth direction DR4 or the fifth direction DR5 can be equal to the widths of the first light-blocking venetian blind LV21, the second light-blocking venetian blind LV13, and the third light-blocking venetian blind LV32 in the fourth direction DR4 or the fifth direction DR5. For example, the width W33 of the fourth light-blocking venetian blind LV33 can be equal to the width W21 of the first light-blocking venetian blind LV21, the width W13 of the second light-blocking venetian blind LV13, and the width W32 of the third light-blocking venetian blind LV32. However, this disclosure is not limited to this, and the widths of the venetian blinds LV can also be different from each other.

[0199] In the display device 10 according to the current embodiment, venetian blinds LV surrounding a third emitting region EA3 having a relatively large size or area and a first emitting region EA1 and a second emitting region EA2 having relatively small sizes or areas are formed to have the same height, but a venetian blind LV (e.g., a fourth light-blocking venetian blind LV33) is also placed superimposed on the third emitting region EA3. Therefore, the viewing angle of light emitted from the first emitting region EA1 to the third emitting region EA3 can be controlled equally. That is, by providing a venetian blind LV superimposed on the third emitting region EA3, the light output rate of the light emitted from the third emitting region EA3 is adjusted to the same level as the light output rate of the light emitted from the first emitting region EA1 and the second emitting region EA2, thereby controlling the viewing angle of light emitted from the first emitting region EA1 to the third emitting region EA3 equally.

[0200] In the display device 10 according to the current embodiment, since all the louvers LV provided on one side and the other side of each of the first emission regions EA1 to the third emission regions EA3 have the same height, the distance from the louvers LV on one side and the other side can also be the same. Therefore, the viewing angle of the light emitted to one side and the other side of each of the first emission regions EA1 to the third emission regions EA3 can be controlled equally.

[0201] In the display device 10 according to the current embodiment, when the distance D1L between the second light-blocking veil LV13 and the fourth light-blocking veil LV33 in the fifth direction DR5 is different from the distance D2L between the fourth light-blocking veil LV33 and the third light-blocking veil LV32 in the fifth direction DR5, the distance D1B between the third emitting region EA3 and the second light-blocking veil LV13 in the fifth direction DR5 can be made different from the distance D2B between the third emitting region EA3 and the third light-blocking veil LV32 in the fifth direction DR5. Therefore, the viewing angle of the light emitted to one side and the other side of the third emitting region EA3 can be controlled equally.

[0202] By uniformly controlling the viewing angle of light emitted from the emission region EA as described above, visual distortions such as moiré fringes and milky haze can be limited and / or minimized.

[0203] Figure 15 This is a cross-sectional view of the display device 10 according to an embodiment.

[0204] Reference Figure 15 The display device 10 according to the current embodiment and the reference 10 Figure 5 The difference between the display device 10 of the embodiments described above and the one described above is that the light control layer LCL is configured to be adjacent to the upper surface of the encapsulation substrate 200.

[0205] For example, the encapsulation substrate 200 may include a light control layer LCL. The encapsulation substrate 200 may include a recessed groove GRV in a direction from one surface of the encapsulation substrate 200 to another surface (e.g., in the thickness direction (or the third direction DR3)) and a venetian blind LV disposed in the recessed groove GRV. The recessed groove GRV and the venetian blind LV may be included in the light control layer LCL.

[0206] For example, a recessed GRV can be recessed from one surface of the package substrate 200 (e.g., the upper surface in the figure) to another surface (e.g., the lower surface in the figure). A recessed GRV can also be recessed from the surface facing the polarizing layer POL to the surface facing the display substrate 100.

[0207] The venetian blinds (LVs) can be disposed within the recessed GRV and can extend from the upper surface to the lower surface of the encapsulation substrate 200. The venetian blinds (LVs) can be disposed adjacent to the upper surface of the encapsulation substrate 200. Each of the venetian blinds (LVs) can have an inverted conical shape with a wide width at the top and a narrow width at the bottom. However, this disclosure is not limited thereto, and each of the venetian blinds (LVs) can also have a columnar shape with the same width at both the top and bottom.

[0208] As in the current embodiment, the structure in which the light control layer LCL is positioned adjacent to the upper surface of the packaging substrate 200 can be applied not only according to reference Figure 5 The display device 10 described in the embodiments above, and can be applied according to reference Figure 12 The display device 10 of the described embodiment and according to reference Figure 13 and Figure 14 The display device 10 of the described embodiment.

[0209] For example, according to the reference Figure 5 As in the display device 10 of the embodiments described above, where the light control layer LCL is configured to be adjacent to the lower surface of the encapsulation substrate 200, the structure can be manufactured using the method S1 for manufacturing the display device according to the embodiments described later (see Figure 16 To manufacture. On the other hand, as in accordance with reference Figure 15 As in the currently described embodiment of the display device 10, where the light control layer LCL is configured to be adjacent to the upper surface of the encapsulation substrate 200, the structure can be manufactured according to the method S2 for manufacturing the display device according to the embodiment described later (see Figure 21 ) to manufacture.

[0210] A method for manufacturing a display device according to an embodiment will now be described.

[0211] Figure 16 This is a flowchart illustrating a method S1 for manufacturing a display device according to an embodiment. Figure 17 It is shown Figure 16 The sectional view of operation S110. Figure 18 It is shown Figure 16 The sectional view of operation S120. Figure 19 It is shown Figure 16 The sectional view of operation S130. Figure 20 It is shown Figure 16 The sectional view of operation S140.

[0212] Reference Figures 16 to 20 The method S1 for manufacturing a display device according to an embodiment may include: patterning etched lines on the lower surface of a package substrate using a laser (operation S110); forming grooves and thinning the package substrate using an etchant (operation S120); injecting ink into the grooves and curing the ink (operation S130); and bonding the package substrate to a display substrate (operation S140).

[0213] First, such as Figure 17 As shown, when patterning etched lines on the lower surface of the package substrate 200 using a laser LSR (operation S110), the first head HD1 can irradiate the lower surface of the package substrate 200 with the laser LSR.

[0214] The first head HD1 can be a laser generating device. For example, the first head HD1 can be a glass processing device using a laser LSR and / or other devices that include a laser. The laser LSR generated from the first head HD1 can be, but is not limited to, light in the infrared wavelength range.

[0215] The first head HD1 can form cleaving lines CTL1 and CTL2 by inducing a phase transition in the material included in the packaging substrate 200 through laser LSR. For example, when the packaging substrate 200 includes glass, the molecular arrangement of silicon dioxide included in the glass can be altered to weaken their bonding strength. Therefore, regions with different bonding strengths between molecules than those in regions not irradiated by laser LSR can be formed, and such regions can be cleaving lines CTL1 and CTL2.

[0216] Cutting lines CTL1 and CTL2 may include a first cutting line CTL1 and a second cutting line CTL2. The second cutting line CTL2 may have a smaller depth than the first cutting line CTL1. The first head HD1 can form the second cutting line CTL2 with a smaller depth than the first cutting line CTL1 by reducing the intensity of the laser LSR.

[0217] Next, as Figure 18As shown, when forming grooves and thinning the package substrate 200 using an etchant (operation S120), the second head HD2 can spray the etchant onto the lower surface of the package substrate 200. At this time, the package substrate 200 can be etched along the cut lines CTL1 and CTL2, which are areas with weakened bonding strength. Therefore, grooves GRV1 and GRV2 can be formed along the cut lines CTL1 and CTL2.

[0218] The grooves GRV1 and GRV2 may include a first groove GRV1 and a second groove GRV2. The second groove GRV2 may have a smaller depth than the first groove GRV1.

[0219] The second head HD2 can spray etchant onto the upper surface of the package substrate 200. At this time, the package substrate 200 with a first thickness TH1 can be thinned to a second thickness TH2.

[0220] In some embodiments, the etchant used to form the grooves GRV1 and GRV2 and the etchant used for thinning may include different components, but this disclosure is not limited thereto.

[0221] In the accompanying drawings, the second head HD2 sprays etchant onto the lower or upper surface of the package substrate 200. However, this disclosure is not limited thereto. For example, when the etching process is performed as wet etching, the package substrate 200 can be directly immersed or submerged in the etchant instead of spraying the etchant. The second head HD2 may include a nozzle in fluid communication with a container storing the etchant and a pump for supplying the etchant.

[0222] Next, as Figure 19 As shown, during the injection of ink into the grooves GRV1 and GRV2 and the curing of the ink (operation S130), the third head HD3 can inject ink containing a light-blocking material into the grooves GRV1 and GRV2. For example, the ink can be a photosensitive resin that can absorb or block light, and can include a light-blocking organic material containing an organic black pigment such as carbon black.

[0223] The third head HD3 can use heat or light such as ultraviolet light to cure the ink injected into the grooves GRV1 and GRV2. Alternatively, the ink can cure naturally. The third head HD3 may include a nozzle and / or pump for injecting ink and may include a UV diode or lamp for curing.

[0224] The ink can be cured to form a first louver LV1 in the first groove GRV1 and a second louver LV2 in the second groove GRV2.

[0225] Although not shown in the accompanying drawings, if the ink overflows and cures in the grooves GRV1 and GRV2, a polishing process may also be included to remove the cured ink that has overflowed outside the grooves GRV1 and GRV2. For example, the polishing process may be a chemical mechanical polishing process.

[0226] Next, as Figure 20 As shown, when the encapsulation substrate 200 is bonded to the display substrate 100 (operation S140), the encapsulation substrate 200 including the blinds LV1 and LV2 can be bonded to the prepared display substrate 100.

[0227] In the method S1 for manufacturing a display device according to the current embodiment, since the cutting lines CTL1 and CTL2 are pre-patterned using a laser LSR, the alignment accuracy of the blinds LV1 and LV2 can be improved. Therefore, compared to attaching a separate light control film to the encapsulation substrate 200, yield problems caused by alignment errors can be improved.

[0228] Furthermore, since the patterning using laser LSR enables precise patterning based on the shape and arrangement of the emission area, venetian blinds can be patterned in various shapes and arrangements.

[0229] In addition, since the etching processes for forming the grooves GRV1 and GRV2 and the processes for thinning the package substrate 200 can be performed continuously or simultaneously, process efficiency can be improved.

[0230] Figure 21 This is a flowchart illustrating a method for manufacturing a display device according to an embodiment. Figure 22 It is shown Figure 21 The sectional view of operation S210. Figure 23 It is shown Figure 21 The sectional view of operation S220. Figure 24 It is shown Figure 21 The sectional view of operation S230. Figure 25 It is shown Figure 21 The sectional view of operation S240.

[0231] Reference Figures 21 to 25 The method S2 for manufacturing a display device according to the current embodiment and the method according to reference Figure 16 The method S1 for manufacturing a display device as described in the embodiments differs in that, after the encapsulation substrate 200 and the display substrate 100 are bonded together, a laser patterning process, an etching process, and an ink process are performed, and louvers LV1 and LV2 are formed on the upper surface of the encapsulation substrate 200.

[0232] For example, the method S2 for manufacturing a display device according to the current embodiment may include: bonding an encapsulation substrate to a display substrate (operation S210); patterning etched lines on the upper surface of the encapsulation substrate using a laser (operation S220); forming grooves using an etchant (operation S230); and injecting ink into the grooves and curing the ink (operation S240).

[0233] First, such as Figure 22 As shown, bonding the package substrate 200 to the display substrate 100 (operation S210) can be performed before patterning etched lines on the upper surface of the package substrate 200 using a laser LSR (operation S220), forming grooves GRV1 and GRV2 using an etchant (operation S230), and injecting ink into the grooves GRV1 and GRV2 and curing the ink (operation S240). In this case, since the lower surface of the package substrate 200 is covered by the display substrate 100, louvers LV1 and LV2 can be formed on the upper surface of the package substrate 200.

[0234] Next, as Figure 23 As shown, when patterning etched lines on the upper surface of the package substrate 200 using a laser LSR (operation S220), the first head HD1 can irradiate the upper surface of the package substrate 200 with the laser LSR. Therefore, etched lines CTL1 and CTL2 can be formed in the direction from the upper surface to the lower surface of the package substrate 200.

[0235] Next, as Figure 24 As shown, when using etchant to form grooves GRV1 and GRV2 (operation S230), the second head HD2 can spray etchant onto the upper surface of the package substrate 200.

[0236] At this time, according to the reference Figure 16 Unlike the method S1 for manufacturing a display device described in the present embodiment, the packaging substrate 200 used in the method S2 for manufacturing a display device according to the present embodiment may be a packaging substrate 200 that has been thinned to a second thickness TH2.

[0237] Next, as Figure 25 As shown, while the ink is injected into the grooves GRV1 and GRV2 and cured (operation S240), the third head HD3 can inject the ink onto the upper surface of the encapsulation substrate 200 and irradiate it with heat or light such as ultraviolet light.

[0238] In the method S2 for manufacturing a display device according to the current embodiment, since the laser patterning process, etching process, and ink process are performed after the packaging substrate 200 and the display substrate 100 are bonded together, the processes and equipment used in existing bonding processes can be used as is. Therefore, process costs can be reduced.

[0239] In concluding this detailed description, those skilled in the art will understand that many variations and modifications can be made to the presented embodiments without substantially departing from the principles of this disclosure. Therefore, the disclosed embodiments are used only in a general and descriptive sense and not for limiting purposes.

Claims

1. A display device, the display device comprising: First base; A light-emitting layer is disposed on the first substrate; as well as A second substrate is disposed on and covers the light-emitting layer, wherein, The second substrate includes a groove recessed in a direction from a first surface of the second substrate toward a second surface of the second substrate, and The second base also includes louvers in the groove.

2. The display device according to claim 1, wherein, The light-emitting layer includes a first emitting region, a second emitting region, and a third emitting region. The second transmission area, the first transmission area, and the third transmission area are arranged sequentially in one direction. The louvers include a first louver surrounding the third emission region in a plan view and a second louver between the first emission region and the second emission region in a plan view, and The size of the third transmission region is larger than the size of the first transmission region and the size of the second transmission region, and The height of the first louver is greater than the height of the second louver.

3. The display device according to claim 2, wherein, The distance between the first louver on the first side of the third emission area and the third emission area is equal to the distance between the first louver on the second side of the third emission area and the third emission area.

4. The display device according to claim 2, wherein, The distance between the first emission area and the portion of the second louver between the second emission area and the first emission area is less than the distance between the first emission area and the portion of the first louver between the first emission area and the third emission area.

5. The display device according to claim 2, wherein, A portion of the first louver is located between the first emission area and the third emission area, and The distance between the first emission area and the portion of the first louver is greater than the distance between the third emission area and the portion of the first louver.

6. The display device according to claim 2, wherein, The size of the first transmission region is smaller than the size of the second transmission region. A portion of the second louver is located between the first emission area and the second emission area, and The distance between the first emission area and the portion of the second louver between the first emission area and the second emission area is greater than the distance between the second emission area and the portion of the second louver between the first emission area and the second emission area.

7. The display device according to claim 2, wherein, The louvers do not overlap with the first, second, and third emission areas.

8. The display device according to claim 1, wherein, The light-emitting layer includes a first emitting region, a second emitting region, and a third emitting region. The size of the third transmission region is larger than the size of the first transmission region and the size of the second transmission region, and At least a portion of the louvers overlaps with the third emission area.

9. The display device according to claim 8, wherein, The louvers do not overlap with the first and second emission areas.

10. The display device according to claim 8, wherein, The second transmission area, the first transmission area, and the third transmission area are arranged sequentially in one direction. The venetian blinds include: a first light-blocking venetian blind located between the second emitting region and the first emitting region; a second light-blocking venetian blind located between the first emitting region and the third emitting region; a third light-blocking venetian blind located between the third emitting region and the second emitting region; and a fourth light-blocking venetian blind superimposed on the third emitting region. The first light-blocking venetian blind, the second light-blocking venetian blind, the third light-blocking venetian blind, and the fourth light-blocking venetian blind are all at the same height.

11. The display device according to claim 10, wherein, The distance between the first emitting area and the first light-blocking veneer is equal to the distance between the first emitting area and the second light-blocking veneer.

12. The display device according to claim 10, wherein, The distance between the second emitting area and the third light-blocking veneer is equal to the distance between the second emitting area and the first light-blocking veneer.

13. The display device according to claim 10, wherein, The distance between the third emission area and the second light-blocking veneer is equal to the distance between the third emission area and the third light-blocking veneer.

14. The display device according to claim 10, wherein, The distance between the second light-blocking venetian blind and the fourth light-blocking venetian blind is equal to the distance between the fourth light-blocking venetian blind and the third light-blocking venetian blind.

15. The display device according to claim 1, further comprising: A polarizing layer is located on the second substrate.

16. The display device according to claim 15, wherein, The first surface of the second substrate faces the first substrate, and The second surface of the second substrate faces the polarization layer.

17. The display device according to claim 15, wherein, The first surface of the second substrate faces the polarization layer, and The second surface of the second substrate faces the first substrate.

18. A display device, the display device comprising: The display substrate includes a first substrate, a thin-film transistor layer on the first substrate, and a light-emitting element layer on the thin-film transistor layer; as well as The encapsulation substrate faces the display substrate, wherein, The first surface of the encapsulation substrate faces away from the second surface of the encapsulation substrate. The encapsulation substrate includes a light control layer, and The light control layer includes louvers extending in a direction from the first surface of the encapsulation substrate to the second surface of the encapsulation substrate.

19. The display device according to claim 18, wherein, The light-emitting element layer includes a first emitting region, a second emitting region, and a third emitting region. The second transmission area, the first transmission area, and the third transmission area are arranged sequentially in one direction. The louvers include a first louver surrounding the third emission area in a plan view and a second louver between the first emission area and the second emission area in a plan view. The size of the third transmission region is larger than the size of the first transmission region and the size of the second transmission region, and The height of the first louver is greater than the height of the second louver.

20. An automobile, the automobile comprising: windshield; The dashboard is adjacent to the windshield; as well as Display device, on the dashboard The display device includes: a first substrate; a light-emitting layer on the first substrate; and a second substrate on the light-emitting layer and covering the light-emitting layer. The second substrate includes a groove recessed in a direction from a first surface of the second substrate toward a second surface of the second substrate, and The second base also includes louvers in the groove.

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