Display device

Abstract

A display device is provided. The display device includes a light emitting element layer, a light control layer on the light emitting element layer and including a plurality of light blocking films spaced apart and a light transmitting film between the plurality of light blocking films, and a first emission region and a second emission region, the plurality of light blocking films includes a first shutter and a second shutter on both sides of a first side of the first emission region, respectively, across the first side, and a third shutter and a fourth shutter on both sides of a second side of the second emission region, respectively, across the second side, and a width of the first emission region is different from a width of the second emission region. And the distance between the first side and the first shutter is different from the distance between the second side and the third shutter.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0122992 filed in the Korean Intellectual Property Office on September 15, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device. Background Art

[0004] With the development of the information society, the demand for display devices for displaying images has increased and diversified. The display device may be a flat panel display device such as a liquid crystal display (LCD), a field emission display (FED), or a light emitting display (LED). The light emitting display device may include an organic light emitting display device including an organic light emitting diode element as a light emitting element or a light emitting diode display device including an inorganic light emitting diode element (such as a light emitting diode) as a light emitting element.

[0005] In the case of a vehicle display device, in the case where an image displayed on the vehicle display device disposed in front of a driver or a passenger is reflected on the windshield of the vehicle at night, the reflected image may disturb the driver's driving, and therefore, it is desirable to control the viewing angle of the image displayed on the vehicle display device. For the purpose of privacy protection or safe driving, it is desirable to control the viewing angle of the image displayed on the vehicle display device so that the image displayed on the vehicle display device disposed in front of the driver is not provided to the passenger, or so that the image displayed on the vehicle display device disposed in front of the passenger is not provided to the driver.

[0006] It should be understood that this background technology section is intended to provide a useful background for understanding the technology to some extent. However, this background technology section may also include ideas, concepts or cognitions that are not known or clear to those skilled in the relevant art before the corresponding effective application date of the subject matter disclosed in this article. Summary of the invention

[0007] Aspects of the present disclosure provide a display device in which a difference in brightness for each emission area according to a viewing angle is minimized.

[0008] Aspects of the present disclosure also provide a display device in which a color deviation for each emission area according to a viewing angle is minimized.

[0009] However, the aspects of the present disclosure are not limited to those described herein. The above and other aspects of the present disclosure will become more apparent to those skilled in the art by referring to the detailed description of the present disclosure given below.

[0010] According to one aspect of the present disclosure, a display device may include a light-emitting element layer, a light-control layer, a first emission area, and a second emission area, the light-emitting element layer being arranged on a substrate, the light-emitting element layer including a first light-emitting element and a second light-emitting element, the light-control layer being arranged on the light-emitting element layer, the light-control layer including a plurality of light-blocking films spaced apart from each other, and a light-transmitting film arranged between the plurality of light-blocking films, light emitted from the first light-emitting element and the second light-emitting element being respectively emitted through the first emission area and the second emission area, wherein the plurality of light-blocking films include a first louver, a second louver, a third louver, and a fourth louver, the first louver and the second louver being respectively arranged on both sides of a first edge of the first emission area, wherein the first edge is arranged between the first louver and the second louver, the third louver and the fourth louver being respectively arranged on both sides of a second edge of the second emission area, wherein the second edge is arranged between the third louver and the fourth louver, the width of the first emission area is different from the width of the second emission area, and the distance between the first edge and the first louver is different from the distance between the second edge and the third louver.

[0011] In an embodiment, a width of the first emission region may be greater than a width of the second emission region.

[0012] In an embodiment, the distance between the first louver and the second louver and the distance between the third louver and the fourth louver may be the same.

[0013] In an embodiment, a distance between the first side and the first louver may be smaller than a distance between the second side and the third louver.

[0014] In an embodiment, the width of the first louver, the width of the second louver, the width of the third louver, and the width of the fourth louver may be the same.

[0015] In an embodiment, the length of a portion of the light-transmitting film disposed between the first louver and the second louver that does not overlap the first emission area may be smaller than the length of a portion of the light-transmitting film disposed between the third louver and the fourth louver that does not overlap the second emission area.

[0016] In an embodiment, a length by which the light-transmitting film disposed between the first louver and the second louver overlaps with the first emission region may be greater than a length by which the light-transmitting film disposed between the third louver and the fourth louver overlaps with the second emission region.

[0017] In an embodiment, the distance between the first side and the second louver may be different from the distance between the second side and the fourth louver.

[0018] In an embodiment, a distance between the first side and the second louver may be greater than a distance between the second side and the fourth louver.

[0019] In an embodiment, the first emission area may include a third side disposed on a side opposite to the first side, wherein the second louver is disposed between the third side and the side opposite to the first side, and the second emission area may include a fourth side disposed on a side opposite to the second side, wherein the fourth louver is disposed between the fourth side and the side opposite to the second side.

[0020] In an embodiment, a distance between the third side and the second louver may be greater than a distance between the fourth side and the fourth louver.

[0021] In an embodiment, the first louver may not overlap the first emission area, and the third louver may not overlap the second emission area.

[0022] In an embodiment, the second louver may overlap the first emission area and the fourth louver may overlap the second emission area.

[0023] According to one aspect of the present disclosure, a display device may include a light-emitting element layer, a light-control layer, a first emission area, and a second emission area, the light-emitting element layer being arranged on a substrate, the light-emitting element layer including a first light-emitting element and a second light-emitting element, the light-control layer being arranged on the light-emitting element layer, the light-control layer including a plurality of light-blocking films spaced apart from each other, and a light-transmitting film arranged between the plurality of light-blocking films, light emitted from the first light-emitting element and the second light-emitting element being respectively emitted through the first emission area and the second emission area, wherein the plurality of light-blocking films include a first louver, a second louver, a third louver, and a fourth louver, the first louver and the second louver being respectively arranged on both sides of a first edge of the first emission area, wherein the first edge is arranged between the first louver and the second louver, the third louver and the fourth louver being respectively arranged on both sides of a second edge of the second emission area, wherein the second edge is arranged between the third louver and the fourth louver, the width of the first emission area is different from the width of the second emission area, and the distance between the first louver and the second louver is different from the distance between the third louver and the fourth louver.

[0024] In an embodiment, a width of the first emission region may be greater than a width of the second emission region.

[0025] In an embodiment, a distance between the first louver and the second louver may be smaller than a distance between the third louver and the fourth louver.

[0026] In an embodiment, a distance between the first side and the first louver may be smaller than a distance between the second side and the third louver.

[0027] In an embodiment, the width of the first louver, the width of the second louver, the width of the third louver, and the width of the fourth louver may be the same.

[0028] In an embodiment, the length of a portion of the light-transmitting film disposed between the first louver and the second louver that does not overlap the first emission area may be smaller than the length of a portion of the light-transmitting film disposed between the third louver and the fourth louver that does not overlap the second emission area.

[0029] In an embodiment, the distance between the first side and the second louver may be different from the distance between the second side and the fourth louver.

[0030] In an embodiment, a distance between the first side and the second louver may be smaller than a distance between the second side and the fourth louver.

[0031] In an embodiment, the first emission area may include a third side disposed on a side opposite to the first side, wherein the second louver is disposed between the third side and the side opposite to the first side, and the second emission area may include a fourth side disposed on a side opposite to the second side, wherein the fourth louver is disposed between the fourth side and the side opposite to the second side.

[0032] In an embodiment, a distance between the third side and the second louver may be greater than a distance between the fourth side and the fourth louver.

[0033] In an embodiment, the first louver may not overlap the first emission area, and the third louver may not overlap the second emission area.

[0034] In an embodiment, the second louver may overlap the first emission area and the fourth louver may overlap the second emission area.

[0035] With the display device according to the embodiment, the difference in brightness for each emission area according to the viewing angle may be minimized.

[0036] With the display device according to the embodiment, color deviation for each emission area according to the viewing angle may be minimized.

[0037] The effects of the present disclosure are not limited to the above-mentioned effects, and various other effects are included in the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other aspects and features of the present disclosure will become more apparent by describing in detail embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0039] Figure 1 is an exploded perspective view showing a display device according to an embodiment;

[0040] Figure 2 is a schematic plan view showing a display device according to an embodiment;

[0041] Figure 3 is an exploded perspective view showing a display device according to an embodiment;

[0042] Figure 4 is along Figure 2 A schematic cross-sectional view of the display device taken along line X1-X1';

[0043] Figure 5A is a schematic diagram showing a case in which a display device according to an embodiment is applied to a vehicle;

[0044] Figure 5B is a schematic diagram showing a case in which a display device according to an embodiment is applied to a vehicle;

[0045] Figure 6 is a schematic cross-sectional view showing an example of a display panel according to an embodiment;

[0046] Figure 7 is a schematic plan view showing an example of a pixel of a display device according to the embodiment;

[0047] Figure 8 is a schematic plan view showing a pixel and a light control layer of a display device according to an embodiment;

[0048] Fig. 9 yes Figure 8 An enlarged comparison diagram of area A and area B;

[0049] Fig.10 is along Figure 8 A schematic cross-sectional view of the display panel taken along line X2-X2';

[0050] Fig.11 is along Figure 8 A schematic cross-sectional view of the display panel taken along line X3-X3';

[0051] Fig.12 is a graph showing brightness values ​​of an emission area according to a viewing angle in a display device according to the prior art;

[0052] Fig.13 is a graph showing brightness values ​​of emission areas according to viewing angles in a display device according to an embodiment;

[0053] Fig.14 is a schematic plan view showing a pixel and a light control layer of a display device according to an embodiment;

[0054] Fig.15 yes Fig.14 An enlarged comparison of area C and area D;

[0055] Fig.16 is along Fig.14 A schematic cross-sectional view of the display panel taken along line X4-X4';

[0056] Fig.17 is along Fig.14 A schematic cross-sectional view of the display panel taken along line X5-X5'; and

[0057] Fig.18 is a graph showing luminance values ​​of emission areas according to viewing angles in a display device according to an embodiment. DETAILED DESCRIPTION

[0058] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings in which embodiments are shown. However, the present disclosure may be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Instead, these embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art.

[0059] In the drawings, the size, thickness, ratio, and dimensions of elements may be exaggerated for convenience and clarity of description. Like reference numerals refer to like elements throughout.

[0060] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0061] For the purpose of its meaning and interpretation, in the specification and claims, the term "and / or" is intended to include any one or a combination of the terms "and" and "or". For example, "A and / or B" may be understood to mean "A, B, or A and B". The terms "and" and "or" may be used in conjunction or disjunction and may be understood to be equivalent to "and / or".

[0062] For purposes of its meaning and interpretation, in the specification and claims, the phrase "at least one of" is intended to include "at least one selected from the group of..." For example, "at least one of A and B" is understood to mean "A, B, or A and B."

[0063] It will be understood that although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0064] For ease of description, the spatially relative terms "below", "beneath", "lower", "above", "upper" or the like may be used herein to describe the relationship between one element or component and another element or component as shown in the accompanying drawings. It should be understood that the spatially relative terms are intended to cover different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, where the device shown in the accompanying drawings is turned over, a device located "below" or "beneath" another device may be placed "above" the other device. Accordingly, the illustrative term "below" may include both a lower position and an upper position. The device may also be oriented in other directions, and therefore, the spatially relative terms may be interpreted differently depending on the orientation.

[0065] The term "overlap" or "overlapped" means that a first object may be located above or below a second object, or to the side of the second object, and vice versa. Additionally, the term "overlap" may include layer, stack, facing or facing, extending above, covering or partially covering, or any other suitable term that will be clear and understood by a person of ordinary skill in the art.

[0066] The terms "facing" and "facing" mean that the first element can be directly or indirectly opposite to the second element. In the case where a third element is between the first element and the second element, although still facing each other, the first element and the second element can be understood to be indirectly opposite to each other.

[0067] When an element is described as “not overlapping” or “non-overlapping” another element, this may include elements being spaced apart from each other, elements being offset from each other, or elements being separated from each other, or any other appropriate terminology as would be apparent and understood by one of ordinary skill in the art.

[0068] The terms “comprise,” “comprising,” “include,” and / or “including,” “has,” “have,” and / or “having,” and variations thereof, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0069] The phrase "in a plan view" means that an object is viewed from the top, and the phrase "in a schematic cross-sectional view" means that a section vertically cutting the object is viewed from the side.

[0070] As used herein, "about" or "approximately" is inclusive of the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, taking into account the errors associated with the measurements and the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, 20%, 10%, 5% of the stated value.

[0071] Unless otherwise defined or implied herein, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It should also be understood that, unless explicitly defined as such herein, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense.

[0072] It should be understood that when an element (or region, layer, part or the like) is referred to as being "on" another element, "connected to" or "coupled to" another element in the specification, the element may be directly disposed on, connected or coupled to the other element mentioned above, or an intervening element may be disposed between them.

[0073] It should be understood that the terms "connected to" or "coupled to" may include physical or electrical connections or couplings.

[0074] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

[0075] Figure 1 is an exploded perspective view showing a display device according to an embodiment. Figure 2 is a schematic plan view showing a display device according to an embodiment. Figure 3 is an exploded perspective view showing a display device according to an embodiment.

[0076] Reference Figures 1 to 3 The display device 10 is a device that displays moving images or still images and can be used as a display screen for various products such as vehicles, televisions, laptop computers, monitors, billboards, and Internet of Things (IoT) devices, as well as portable electronic devices such as mobile phones, smart phones, tablet personal computers (PCs), smart watches, watch phones, mobile communication terminals, electronic notebooks, electronic books, portable multimedia players (PMPs), navigation devices, and ultra mobile PCs (UMPCs).

[0077] In an embodiment, in the case where the display device 10 is used as a display screen of a vehicle, the display device 10 may be a vehicle display. The vehicle display may provide the user with various service information such as media information and driving information and status information of the vehicle and various functions such as convenience functions. In the case where the display device 10 may include an input device such as a touch panel, the user may operate the driving mode of the vehicle and various functions such as convenience functions through the display device 10.

[0078] The display device 10 may be any one of an organic light emitting display, a liquid crystal display, a plasma display, a field emission display, an electrophoretic display, an electrowetting display, a quantum dot light emitting display, and a micro light emitting diode (LED) display. Hereinafter, it will be described that the display device 10 is an organic light emitting display, but the present disclosure is not limited thereto.

[0079] The display device 10 according to the embodiment may include a display panel 100 , a display driving circuit 250 , a circuit board 300 , and a touch driving circuit 400 .

[0080] The display panel 100 may include a plurality of pixels PX arranged (or disposed) in a first direction DR1 and a second direction DR2. Each of the plurality of pixels PX may have a rectangular, square, or diamond shape in a plan view. Figures 1 to 3 As shown in , each of the plurality of pixels PX may have a square shape in a plan view. However, each of the plurality of pixels PX is not limited thereto and may have various shapes in a plan view such as other polygonal shapes, circular shapes, and elliptical shapes in addition to the above shapes.

[0081] In the drawings, the first direction DR1 and the second direction DR2 are each horizontal directions and intersect each other. For example, the first direction DR1 and the second direction DR2 may be orthogonal to each other. The third direction DR3 may be a vertical direction intersecting (e.g., orthogonal to) the first direction DR1 and the second direction DR2. In the specification, the direction indicated by each of the first direction DR1, the second direction DR2, and the third direction DR3 in the drawings may be referred to as one side, and the direction opposite to the one side may be referred to as the other side, and unless otherwise specified, the direction indicated by each of the first direction DR1, the second direction DR2, and the third direction DR3 may include both one side and the other side.

[0082] The display panel 100 may include a main area MA and a protrusion area PA protruding from one side or both sides of the main area MA.

[0083] The main area MA may be formed in a plan view in a rectangular shape having short sides in a first direction DR1 and long sides in a second direction DR2 intersecting the first direction DR1. Corners where the short sides in the first direction DR1 and the long sides in the second direction DR2 meet may be rounded with a selectable curvature or may be right angles. The shape of the display device 10 in a plan view is not limited to a rectangular shape, and may be other polygonal shapes, a circular shape, or an elliptical shape. The main area MA may be formed to be flat, but is not limited thereto, and may include bent surface portions formed at the left and right ends thereof. In this case, the bent surface portion may have a constant curvature or a variable curvature.

[0084] The main area MA may include a display area DA in which pixels PX are formed to display an image and a non-display area NDA which is a peripheral area of ​​the display area DA.

[0085] Scan lines, data lines, and power lines connected to the pixels PX and the pixels PX may be disposed in the display area DA. In the case where the main area MA may include a bent surface portion, the display area DA may be disposed on the bent surface portion. In this case, an image of the display panel 100 may be viewed even on the bent surface portion.

[0086] The non-display area NDA may be defined as a region from the outside of the display area DA to the edge of the display panel 100. A scan driver for applying a scan signal to a scan line and a link line connecting the data line and the display driving circuit 250 to each other may be disposed in the non-display area NDA.

[0087] The protruding area PA may protrude from one side or one side of the main area MA. Figure 2 As shown in , the protrusion area PA may protrude from the lower side of the main area MA. A length of the protrusion area PA in the first direction DR1 may be smaller than a length of the main area MA in the first direction DR1.

[0088] The protruding area PA may include a bending area BA and a pad area PDA. In this case, the pad area PDA may be disposed on one side or one side of the bending area BA, and the main area MA may be disposed on the other side of the bending area BA. For example, the pad area PDA may be disposed on the lower side of the bending area BA, and the main area MA may be disposed on the upper side of the bending area BA.

[0089] The display panel 100 may be flexibly formed to be bent, curved, folded, or curled. Therefore, the display panel 100 may be bent in the thickness direction (e.g., the third direction DR3) in the bending area BA. In this case, one surface or one surface of the pad area PDA of the display panel 100 faces upward before the display panel 100 is bent, but one surface or one surface of the pad area PDA of the display panel 100 faces downward after the display panel 100 is bent. For this reason, the pad area PDA is disposed below the main area MA and thus may overlap the main area MA.

[0090] Pads electrically connected to the display driving circuit 250 and the circuit board 300 may be provided in the pad area PDA of the display panel 100 .

[0091] The display driving circuit 250 outputs a signal and a voltage for driving the display panel 100. For example, the display driving circuit 250 may supply a data voltage to a data line. The display driving circuit 250 may supply a source voltage to a power line, and may supply a scan control signal to a scan driver. The display driving circuit 250 may be formed as an integrated circuit (IC) and may be mounted on the display panel 100 in a pad area PDA in a chip on glass (COG) manner, a chip on plastic (COP) manner, or an ultrasonic bonding manner, but is not limited thereto. For example, the display driving circuit 250 may be mounted on a circuit board 300.

[0092] The pads may include a display pad electrically connected to the display driving circuit 250 and a touch pad electrically connected to the touch line.

[0093] The circuit board 300 may be attached to the pad using an anisotropic conductive film (ACF). To this end, the leads of the circuit board 300 may be electrically connected to the pad. The circuit board 300 may be a flexible printed circuit board, a printed circuit board, or a flexible film such as a chip on film.

[0094] The touch driving circuit 400 may be connected to the touch sensor layer TSU (see Figure 4 ) of the touch electrode. The touch driving circuit 400 applies a driving signal to the touch sensor layer TSU (see Figure 4 ) and measure the capacitance value of the touch electrode. The driving signal may be a signal having a plurality of driving pulses. The touch driving circuit 400 may determine whether a touch has been input according to the capacitance value, and may calculate the touch coordinates of the position where the touch has been input.

[0095] The touch driving circuit 400 may be provided on the circuit board 300. The touch driving circuit 400 may be formed as an integrated circuit (IC) and mounted on the circuit board 300.

[0096] In the display device 10 according to the embodiment, the display panel 100 may further include a light control layer LCL.

[0097] The light control layer LCL may be directly disposed on the main area MA of the display panel 100. For example, the light control layer LCL may be embedded in the display panel 100 and directly disposed on the main area MA of the display panel 100. The light control layer LCL is embedded in the display panel 100 so that the thickness and manufacturing cost of the display device 10 can be reduced compared to a case in which a separate light control film is attached.

[0098] In an embodiment, the light control layer LCL may be disposed on the display area DA of the main area MA. The light control layer LCL may adjust a viewing angle of light emitted from the display panel 100.

[0099] However, the present disclosure is not limited thereto, and the size of the light control layer LCL may also be larger than the size of the display area DA in a plan view. In this case, the light control layer LCL may overlap both the display area DA and the non-display area NDA.

[0100] In an embodiment, the light control layer LCL may include a transmission area OA arranged in the first direction DR1 and the second direction DR2 and a non-transmission area LSA surrounding the transmission area OA. However, the present disclosure is not limited thereto, and the non-transmission area LSA may be arranged in the first direction DR1 and the second direction DR2, and the transmission area OA may surround the non-transmission area LSA. Figures 1 to 3 In the drawings, for convenience of explanation, a case in which the non-transmission area LSA surrounds the transmission area OA will be described by way of example.

[0101] The transmission area OA may be a region where no light blocking film LS is provided (see Figure 8 The transmission area OA is a region that transmits light, and may extend along the third direction DR3.

[0102] like Figure 1 and Figure 2 As shown in , each of the transmission areas OA may have a rectangular shape in a plan view, but is not limited thereto. Each of the transmission areas OA may have a circular shape, an elliptical shape, or other polygonal shapes other than a rectangular shape in a plan view.

[0103] In an embodiment, the transmission area OA may have a shape extending in the first direction DR1 or the second direction DR2. Figure 3 As shown in , the transmission area OA may extend in the first direction DR1 and may be disposed along the second direction DR2. As another example, the transmission area OA may extend in the second direction DR2 and may be disposed along the first direction DR1.

[0104] like Figure 1 As shown in , in the case where the transmission area OA is arranged along the first direction DR1 and the second direction DR2, the viewing angle can be controlled in both the first direction DR1 and the second direction DR2. Figure 3 As shown in , when the transmission area OA is arranged along the first direction DR1 or the second direction DR2, the viewing angle can be controlled in the first direction DR1 or the second direction DR2. For example, the arrangement and shape of the transmission area OA can be variously modified according to the desired viewing angle control direction.

[0105] The non-transmission area LSA may be an area of ​​the light control layer LCL except the transmission area OA. The non-transmission area LSA may be an area in which the light blocking film LS is disposed (see Figure 8 ) area.

[0106] exist Figures 1 to 3 , it has been shown that the non-transmission area LSA is disposed to surround the transmission area OA, but the present disclosure is not limited thereto. In an embodiment, the non-transmission area LSA may extend in the same direction as the transmission area OA and may be alternately disposed with the transmission area OA. Figure 3 As shown in FIG. 2 , in the case where the transmission area OA extends in the first direction DR1 , the non-transmission area LSA may extend in the first direction DR1 and may be alternately disposed with the transmission area OA in the second direction DR2 .

[0107] The light control layer LCL may include a light emitting layer 172 (see Figure 6 ) light-blocking film LS (see Figure 8 ) and a light-transmitting film LT (see Figure 8 ). Reference will be made later to the spirit and scope of this disclosure. Figure 8 etc. describe the detailed structure of the light control layer LCL.

[0108] Figure 4 is along Figure 2 Schematic cross-sectional view of the display device taken along line X1-X1'.

[0109] Reference Figure 4 The display device 10 may include a display panel 100 in which a light control layer LCL is embedded. The display panel 100 may include a base member BS, a thin film transistor layer TFTL, a light emitting element layer EML, a thin film encapsulation layer TFEL, a touch sensor layer TSU, and a light control layer LCL.

[0110] The base member BS may include a substrate. The substrate may be made of an insulating material such as glass, quartz or a polymer resin. Examples of polymer resins may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP) or a combination thereof. By way of example, the substrate may include a metal material.

[0111] The substrate may be a rigid substrate or a flexible substrate that can be bent, folded, and rolled. In the case where the substrate is a flexible substrate, the substrate may be made of polyimide (PI), but is not limited thereto.

[0112] The thin film transistor layer TFTL may be disposed on the base member BS. Scan lines, data lines, power lines, scan control lines, routing lines connecting pads and data lines to each other, and the like, and a plurality of thin film transistors for each of a plurality of pixels may be formed at the thin film transistor layer TFTL. Each of the plurality of thin film transistors may include a gate electrode, a semiconductor layer, a source electrode, and a drain electrode.

[0113] The thin film transistor layer TFTL may be disposed in the display area DA and the non-display area NDA. By way of example, a thin film transistor, a scan line, a data line, and a power line of each of a plurality of pixels of the thin film transistor layer TFTL may be disposed in the display area DA. A scan control line and a link line of the thin film transistor layer TFTL may be disposed in the non-display area NDA.

[0114] The light emitting element layer EML may be disposed on the thin film transistor layer TFTL. The light emitting element layer EML may include a plurality of pixels and a pixel defining film defining the plurality of pixels, each of the plurality of pixels including a first electrode, a light emitting layer, and a second electrode. The light emitting layer may be an organic light emitting layer containing an organic material. 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 selectable voltage is applied to the first electrode through the thin film transistor of the thin film transistor layer TFTL and a cathode voltage is applied to the second electrode, holes and electrons move to the organic light emitting layer through the hole transport layer and the electron transport layer, respectively, and combine with each other in the organic light emitting layer to emit light. Pixels each including a light emitting element layer EML may be disposed in the display area DA.

[0115] The thin film encapsulation layer TFEL may be disposed on the light emitting element layer EML. The thin film encapsulation layer TFEL may be used to prevent oxygen or moisture from penetrating into the light emitting element layer EML. To this end, the thin film encapsulation layer TFEL may include at least one inorganic film. The inorganic film may be a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer, but is not limited thereto. The thin film encapsulation layer TFEL may be used to protect the light emitting element layer EML from foreign matter such as dust. To this end, the thin film encapsulation layer TFEL may include at least one organic film. The organic film may be made of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin, but is not limited thereto.

[0116] The thin film encapsulation layer TFEL may be disposed in both the display area DA and the non-display area NDA. By way of example, the thin film encapsulation layer TFEL may be disposed to cover the light emitting element layer EML of the display area DA and the non-display area NDA and to cover the thin film transistor layer TFTL of the non-display area NDA.

[0117] The touch sensor layer TSU may be disposed on the thin film encapsulation layer TFEL. Since the touch sensor layer TSU is directly disposed on the thin film encapsulation layer TFEL, the thickness of the display device 10 may be reduced compared to a case in which a separate touch panel including the touch sensor layer TSU is attached to the thin film encapsulation layer TFEL.

[0118] The touch sensor layer TSU may include a touch electrode for capacitively sensing a user's touch and a touch line connecting the pad and the touch electrode to each other. For example, the touch sensor layer TSU may sense a user's touch in a self-capacitive manner or a mutual-capacitive manner.

[0119] The touch electrodes of the touch sensor layer TSU may be disposed in the touch sensor area overlapping the display area DA. The touch wires of the touch sensor layer TSU may be disposed in the touch peripheral area overlapping the non-display area NDA.

[0120] The light control layer LCL may be disposed on the touch sensor layer TSU. The light control layer LCL may be disposed to overlap the display area DA. The light control layer LCL may be used to absorb or block light that travels at a selectable angle relative to the third direction DR3 among the light emitted from the light emitting element layer EML. For example, the light control layer LCL may control a viewing angle.

[0121] Although in Figure 4 Although not shown, the display device 10 may further include a cover window. The cover window may be additionally disposed on the light control layer LCL, and in this case, the light control layer LCL and the cover window may be attached to each other by a transparent adhesive member such as an optically clear adhesive (OCA) film.

[0122] Figure 5Ais a schematic diagram showing a case in which the display device according to the embodiment is applied to a vehicle. Figure 5B is a schematic diagram showing a case in which the display device according to the embodiment is applied to a vehicle.

[0123] Reference Figure 5A and Figure 5B The display device 10 according to the embodiment may be, for example, a display device applied to a vehicle. The vehicle may include a vehicle body forming the appearance of the vehicle and an indoor space defined by the vehicle body. The vehicle body may include a windshield W that protects the driver PS1 and the passenger PS2 from external influences and provides a field of vision for the driver PS1. Figure 5A and Figure 5B As shown in , the display device 10 may be provided in an indoor space.

[0124] In an embodiment, the display device 10 may be provided on a dashboard provided in an indoor space. Figure 5A As shown in , within the spirit and scope of the present disclosure, the display device 10 may be provided on the dashboard located in front of the driver's seat to provide speed information and similar information to the driver PS1, may be provided on the dashboard located in front of the passenger seat to provide entertainment information and similar information to the passenger PS2, or may be provided at the center of the dashboard to provide map information and similar information. Figure 5A 2 shows by way of example that the display device 10 is respectively arranged on a dashboard located in front of a driver's seat and on a dashboard located in front of a passenger seat.

[0125] As another example, Figure 5B As shown in , the display device 10 may extend from the dashboard located in front of the driver's seat to the dashboard located in front of the passenger seat. For example, the display device 10 may be an integrated display connected from the dashboard located in front of the driver's seat to the dashboard located in front of the passenger seat. In this case, 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. Although in Figure 5B Although not shown in the figure, the display device 10 may further include a third display area between the first display area DA1 and the second display area DA2.

[0126] In the following, for the convenience of explanation, the following will be described by way of example. Figure 5A However, the present disclosure is not limited to Figure 5A of the embodiments, and in accordance with Figure 5B In the integrated display of the embodiment, the first display area DA1 and the second display area DA2 correspond to Figure 5A The display device 10 in front of the driver's seat and the display device 10 in front of the passenger seat, so that the same technical spirit can be applied according to Figure 5B An integrated display of an embodiment.

[0127] The driver PS1 can recognize (or view) the display screen of the display device 10 through the light LGTO_1 emitted from the display device 10 in front of the driver's seat toward the driver PS1. However, some of the light LGT1 emitted from the display device 10 disposed in front of the driver's seat may be reflected on the surrounding windshield W and provided to the driver PS1. In this case, the image reflected on the windshield W may interfere with the driving of the driver PS1. On the other hand, in the case of the display device 10 according to the embodiment, by adjusting the viewing angle (for example, the longitudinal viewing angle) of the light emitted from the display device 10 relative to the front direction (in the direction facing the driver PS1 in front), it is possible to prevent some of the light LGT1 emitted from the display device 10 in front of the driver's seat from being reflected on the surrounding windshield W and provided to the driver PS1.

[0128] The passenger PS2 can recognize (or view) the display screen of the display device 10 through the light LGT2 emitted from the display device 10 in front of the passenger seat toward the passenger PS2. However, some of the light LGT2 emitted from the display device 10 disposed in front of the passenger seat may be provided toward the driver PS1. In this case, while the vehicle is traveling, within the spirit and scope of the present disclosure, the field of view of the driver PS1 may be limited for reasons of safety, etc. In the case of the display device 10 according to the embodiment, by adjusting the viewing angle (e.g., lateral viewing angle) of the light emitted from the display device 10 relative to the front direction (in the direction facing the passenger PS2 in the front), some of the light LGT2 emitted from the display device 10 in front of the passenger seat may be prevented from being provided to the driver PS1.

[0129] exist Figure 5A , it has been shown that the display device 10 in front of the driver's seat adjusts the longitudinal viewing angle, and the display device 10 in front of the passenger seat adjusts the lateral viewing angle, but the present disclosure is not limited thereto. As an example, the display device 10 in front of the driver's seat can adjust the lateral viewing angle, and the display device 10 in front of the passenger seat can adjust the longitudinal viewing angle. As 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 can adjust both the longitudinal viewing angle and the lateral viewing angle.

[0130] The viewing angle can be adjusted by the light control layer LCL. The viewing angle can be limited to a selectable angle range by the light control layer LCL. As an example, in the case where an imaginary line facing the driver PS1 or the passenger PS2 and extending in a direction perpendicular to the display surface of the display device 10 is a normal line, the viewing angle may be an angle within about 35° from the normal line. In an embodiment, an angle within about 35° from the normal line may be defined as an effective viewing angle, but the present disclosure is not limited thereto.

[0131] In addition, when the vehicle stops, some of the light LGT2 emitted from the display device 10 in front of the passenger seat can be provided to the driver PS1 again. For example, it is possible to freely switch between a case where the viewing angle of the display device 10 is not controlled and a case where the viewing angle of the display device 10 is controlled. To this end, the display device 10 may include pixels PX capable of realizing a normal mode and a privacy mode (see Figure 7 ) structure. Figure 7 This is described in detail.

[0132] Figure 6 is a schematic cross-sectional view showing an example of a display panel according to an embodiment.

[0133] Reference Figure 6 , the display panel 100 may include a display layer DU and a touch sensor layer TSU. The display layer DU may include a base member BS, a thin film transistor layer TFTL, a light emitting element layer EML, and a thin film encapsulation layer TFEL.

[0134] The base member BS may include a first substrate SUB1, a first buffer film BF1 disposed on the first substrate SUB1, and a second substrate SUB2 disposed on the first buffer film BF1.

[0135] Each of the first substrate SUB1 and the second substrate SUB2 may be made of an insulating material such as glass, quartz, or a polymer resin. Examples of polymer resins may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl ester, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or a combination thereof. By way of example, each of the first substrate SUB1 and the second substrate SUB2 may include a metal material.

[0136] Each of the first substrate SUB1 and the second substrate SUB2 may be a rigid substrate or a flexible substrate that can be bent, folded, and rolled. In the case where each of the first substrate SUB1 and the second substrate SUB2 is a flexible substrate, each of the first substrate SUB1 and the second substrate SUB2 may be made of polyimide (PI), but is not limited thereto.

[0137] The first buffer film BF1 is a film for protecting the first thin film transistor ST1 and the light emitting layer 172 from moisture penetration through the first substrate SUB1 and the second substrate SUB2 susceptible to moisture penetration. The first buffer film BF1 may include a plurality of inorganic films alternately stacked with each other. For example, the first buffer film BF1 may be formed as a multi-film in which inorganic films among a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately stacked with each other.

[0138] The thin film transistor layer TFTL may include a bottom metal layer BML, a second buffer film BF2, a first thin film transistor ST1, a first gate insulating film GI1, a first interlayer insulating film 141, a first capacitor electrode CAE1, a second interlayer insulating film 142, a first anode connection electrode ANDE1, a first organic film 160, a second anode connection electrode ANDE2, and a second organic film 180. The first interlayer insulating film 141 and the second interlayer insulating film 142 may be collectively referred to as an interlayer insulating film 140.

[0139] The bottom metal layer BML may be disposed on the second substrate SUB2. The bottom metal layer BML may be disposed to overlap with the first active layer ACT1 of the first thin film transistor ST1 in the third direction DR3 to prevent leakage current from being generated when light is incident on the first active layer ACT1 of the first thin film transistor ST1. The bottom metal layer BML may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. The bottom metal layer BML may be omitted.

[0140] The second buffer film BF2 may be disposed on the bottom metal layer BML. The second buffer film BF2 is a film for protecting the first thin film transistor ST1 and the light emitting layer 172 from moisture penetration through the first substrate SUB1 and the second substrate SUB2 susceptible to moisture penetration. The second buffer film BF2 may include a plurality of inorganic films alternately stacked with each other. For example, the second buffer film BF2 may be formed as a multi-film in which inorganic films among a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately stacked with each other.

[0141] The first active layer ACT1 of the first thin film transistor ST1 may be disposed on the second buffer film BF2. The first active layer ACT1 of the first thin film transistor ST1 may include polycrystalline silicon, single crystal silicon, low temperature polycrystalline silicon, amorphous silicon, or an oxide semiconductor. The first active layer ACT1 of the first thin film transistor ST1 that is not covered by the first gate insulating film GI1 and is exposed is doped with impurities or ions, and thus may have conductivity. Therefore, a first source electrode TS1 and a first drain electrode TD1 of the first active layer ACT1 of the first thin film transistor ST1 may be formed.

[0142] The first gate insulating film GI1 may be disposed on the first active layer ACT1 of the first thin film transistor ST1. Figure 6 1 and 2, it is shown that the first gate insulating film GI1 is disposed between the first gate electrode TG1 of the first thin film transistor ST1 and the first active layer ACT1, but the present disclosure is not limited thereto. The first gate insulating film GI1 may also be disposed between the first interlayer insulating film 141 and the first active layer ACT1 and between the first interlayer insulating film 141 and the second buffer film BF2. The first gate insulating film GI1 may be formed as an inorganic film such as a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0143] The first gate electrode TG1 of the first thin film transistor ST1 may be disposed on the first gate insulating film GI1. The first gate electrode TG1 of the first thin film transistor ST1 may overlap the first active layer ACT1 in the third direction DR3. The first gate electrode TG1 of the first thin film transistor ST1 may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0144] The first interlayer insulating film 141 may be disposed on the first gate electrode TG1 of the first thin film transistor ST1. The first interlayer insulating film 141 may be formed as an inorganic film such as 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 film 141 may include a plurality of inorganic films.

[0145] The first capacitor electrode CAE1 may be disposed on the first interlayer insulating film 141. The first capacitor electrode CAE1 may overlap with the first gate electrode TG1 of the first thin film transistor ST1 in the third direction DR3. Since the first interlayer insulating film 141 has a selectable dielectric constant, a capacitor may be formed by the first capacitor electrode CAE1, the first gate electrode TG1, and the first interlayer insulating film 141 disposed between the first capacitor electrode CAE1 and the first gate electrode TG1. The first capacitor electrode CAE1 may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0146] The second interlayer insulating film 142 may be disposed on the first capacitor electrode CAE1. The second interlayer insulating film 142 may be formed as an inorganic film such as 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 film 142 may include a plurality of inorganic films.

[0147] The first anode connection electrode ANDE1 may be disposed on the second interlayer insulating film 142. The first anode connection electrode ANDE1 may be connected to the first drain electrode TD1 of the first thin film transistor ST1 through a first anode contact hole ANCT1 that penetrates through the first interlayer insulating film 141 and the second interlayer insulating film 142 to expose the first drain electrode TD1 of the first thin film transistor ST1. The first anode connection electrode ANDE1 may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0148] The first organic film 160 for planarization may be disposed on the first anode connection electrode ANDE 1. Within the spirit and scope of the present disclosure, the first organic film 160 may be formed as an organic film made of acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0149] The second anode connection electrode ANDE2 may be disposed on the first organic film 160. The second anode connection electrode ANDE2 may be connected to the first anode connection electrode ANDE1 through a second anode contact hole ANCT2 penetrating through the first organic film 160 to expose the first anode connection electrode ANDE1. The second anode connection electrode ANDE2 may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0150] The second organic film 180 may be disposed on the second anode connection electrode ANDE2. Within the spirit and scope of the present disclosure, the second organic film 180 may be formed as an organic film made of acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0151] exist Figure 6 It has been shown that the first thin film transistor ST1 is formed as a top gate type in which the first gate electrode TG1 is located above the first active layer ACT1, but the present disclosure is not limited thereto. The first thin film transistor ST1 may be formed as a bottom gate type in which the first gate electrode TG1 is located below the first active layer ACT1, or as a dual gate type in which the first gate electrode TG1 is located above and below the first active layer ACT1.

[0152] The light emitting element layer EML may be disposed on the second organic film 180. The light emitting element layer EML may include a plurality of light emitting elements 170 and a dam 190. Each of the plurality of light emitting elements 170 may include a first light emitting electrode 171, a light emitting layer 172, and a second light emitting electrode 173.

[0153] The first light emitting electrode 171 may be formed on the second organic film 180. The first light emitting electrode 171 may be connected to the second anode connection electrode ANDE2 through a third anode contact hole ANCT3 penetrating through the second organic film 180 to expose the second anode connection electrode ANDE2.

[0154] In a top emission structure in which light is emitted toward the second light emitting electrode 173 based on the light emitting layer 172, the first light emitting electrode 171 may be made of a metal material having high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and indium tin oxide (ITO) (ITO / Al / ITO), an APC alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0155] The dam 190 may be formed to partition the first light emitting electrode 171 on the second organic film 180 for defining the emission area EA. The dam 190 may include an opening that exposes 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. Within the spirit and scope of the present disclosure, the dam 190 may be formed as an organic film made of acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0156] The emission area EA refers to a region where the first light emitting electrode 171, the light emitting layer 172, and the second light emitting electrode 173 are sequentially stacked, and holes from the first light emitting electrode 171 and electrons from the second light emitting electrode 173 are combined with each other in the light emitting layer 172 to emit light. The emission area EA may be defined by an opening of the dam 190.

[0157] The light emitting layer 172 is formed on the first light emitting electrode 171 and the dam 190. The light emitting layer 172 may be disposed in the opening of the dam 190, but is not limited thereto. The light emitting layer 172 may include an organic material to emit light of a selectable color. For example, the light emitting layer 172 may include a hole transport layer, an organic material layer, and an electron transport layer.

[0158] 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 commonly formed in all emission areas EA. Figure 6 Although not shown in the drawings, in an embodiment, a capping layer may be formed on the second light emitting electrode 173 .

[0159] In the top emission structure, the second light emitting electrode 173 may be made of a transparent conductive oxide (TCO) such as ITO or indium zinc oxide (IZO) capable of transmitting light, or a semi-transmissive conductive material such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). In the case where the second light emitting electrode 173 is made of a semi-transmissive conductive material, the light emitting efficiency may be increased by a microcavity.

[0160] The thin film encapsulation layer TFEL may be disposed on the second light emitting electrode 173. The thin film encapsulation layer TFEL may include at least one inorganic film to prevent oxygen or moisture from penetrating into the light emitting element layer. The thin film encapsulation layer TFEL may include at least one organic film to protect the light emitting element layer from foreign matter such as dust. For example, the thin film encapsulation layer TFEL may include a first encapsulation film TFE1, a second encapsulation film TFE2, and a third encapsulation film TFE3.

[0161] The first encapsulation film TFE1 (e.g., a first inorganic encapsulation film) may be disposed on the second light emitting electrode 173. The first encapsulation film TFE1 may be a single-layer or multi-layer inorganic film. The first encapsulation film TFE1 may be formed as a multi-film in which inorganic films among silicon nitride layers, silicon oxynitride layers, silicon oxide layers, titanium oxide layers, and aluminum oxide layers are alternately stacked with each other, or as a single film.

[0162] The second encapsulation film TFE2 (e.g., the first organic encapsulation film) may be disposed on the first encapsulation film TFE1. The second encapsulation film TFE2 may be a single-layer or multi-layer organic film. The second encapsulation film TFE2 may include a polymer-based material. The polymer-based material may include polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, and acrylic resin (e.g., polymethyl methacrylate, polyacrylic acid, etc.) or any combination thereof.

[0163] The third encapsulation film TFE3 (e.g., the second inorganic encapsulation film) may be disposed on the second encapsulation film TFE2. The third encapsulation film TFE3 may be a single-layer or multi-layer inorganic film. The third encapsulation film TFE3 may include the same material as the first encapsulation film TFE1. For example, the third encapsulation film TFE3 may be formed as a multi-film or a single film in which inorganic films among silicon nitride layers, silicon oxynitride layers, silicon oxide layers, titanium oxide layers, and aluminum oxide layers are alternately stacked with each other.

[0164] The touch sensor layer TSU may be disposed on the thin film encapsulation layer TFEL. The touch sensor layer TSU may include a plurality of touch electrodes for sensing a user's touch in a capacitive manner and touch lines connecting the plurality of touch electrodes and a touch driver to each other. For example, the touch sensor layer TSU may sense a user's touch in a mutual capacitance manner or a self-capacitance manner.

[0165] In an embodiment, the touch sensor layer TSU may be provided on a separate substrate provided on the display layer DU. In this case, the substrate supporting the touch sensor layer TSU may be an encapsulation member encapsulating the display layer DU.

[0166] A plurality of touch electrodes of the touch sensor layer TSU may be disposed in a touch sensor region overlapping the display region. A touch line of the touch sensor layer TSU may be disposed in a touch peripheral region overlapping the non-display region.

[0167] The touch sensor layer TSU may include a first touch insulating film SIL1 , a first touch electrode REL, a second touch insulating film SIL2 , a second touch electrode TEL, and a third touch insulating film SIL3 .

[0168] The first touch insulating film SIL1 may be disposed on the thin film encapsulation layer TFEL. The first touch insulating film SIL1 may have an insulating function and an optical function. The first touch insulating film SIL1 may include at least one inorganic film. For example, the first touch insulating film SIL1 may be an inorganic film including at least one of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer. Optionally, the first touch insulating film SIL1 may be omitted.

[0169] The first touch electrode REL may be disposed on the first touch insulating film SIL1. The first touch electrode REL may not overlap the light emitting element 170. The first touch electrode REL may be formed as a single layer made of molybdenum (Mo), titanium (Ti), copper (Cu), aluminum (Al), or indium tin oxide (ITO), or formed as a stack structure of aluminum and titanium (Ti / Al / Ti), a stack structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, and a stack structure of an APC alloy and ITO (ITO / APC / ITO).

[0170] The second touch insulating film SIL2 may cover the first touch electrode REL and the first touch insulating film SIL1. The second touch insulating film SIL2 may have an insulating function and an optical function. For example, the second touch insulating film SIL2 may be made of the material described in the first touch insulating film SIL1.

[0171] The second touch electrode TEL may be disposed on the second touch insulating film SIL2. The second touch electrode TEL may not overlap the light emitting element 170. The second touch electrode TEL may be formed as a single layer made of molybdenum (Mo), titanium (Ti), copper (Cu), aluminum (Al), or indium tin oxide (ITO), or as a stack structure of aluminum and titanium (Ti / Al / Ti), a stack structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, and a stack structure of an APC alloy and ITO (ITO / APC / ITO).

[0172] The third touch insulating film SIL3 may cover the second touch electrode TEL and the second touch insulating film SIL2. The third touch insulating film SIL3 may have an insulating function and an optical function. The third touch insulating film SIL3 may be made of the material described in the second touch insulating film SIL2.

[0173] In an embodiment, the first touch insulating film SIL1, the second touch insulating film SIL2, and the third touch insulating film SIL3 may be organic films. For example, within the spirit and scope of the present disclosure, the first touch insulating film SIL1, the second touch insulating film SIL2, and the third touch insulating film SIL3 may be organic films made of acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, or the like.

[0174] The touch sensor layer TSU may further include a planarization film PAS for planarization. Within the spirit and scope of the present disclosure, the planarization film PAS may be formed as an organic film made of acrylic resin, epoxy resin, phenol resin, polyamide resin, polyimide resin, or the like.

[0175] Figure 7 is a schematic plan view showing an example of a pixel of the display device according to the embodiment.

[0176] Reference Figure 7 and Figure 6 , the pixel PX may include an emission area EA, which is an area through which light emitted by the light emitting element 170 is emitted. The emission area EA may be defined by the dam 190. For example, the plurality of emission areas EA may be areas overlapping the light emitting layer 172 disposed in the opening of the dam 190. The emission area EA may be an area in which the first light emitting electrode 171, the light emitting layer 172, and the second light emitting electrode 173 are sequentially stacked while overlapping each other.

[0177] In embodiments, the emission area EA may include a normal mode area NEA (eg, a first light emitting mode area) and a privacy mode area PEA (eg, a second light emitting mode area).

[0178] In the case where the user drives the display device 10 in the normal mode, the light emitting elements disposed in the normal mode area NEA may emit light, and the light emitting elements disposed in the privacy mode area PEA may not emit light. In the case where the user drives the display device 10 in the privacy mode, the light emitting elements disposed in the normal mode area NEA may not emit light, and the light emitting elements disposed in the privacy mode area PEA may emit light.

[0179] However, the present disclosure is not limited thereto, and in the case of the normal mode, the light emitting elements disposed in both the normal mode area NEA and the privacy mode area PEA may emit light.

[0180] The normal mode area NEA and the privacy mode area PEA may include first emission areas NEA1 and PEA1, second emission areas NEA2 and PEA2, and third emission areas NEA3 and PEA3, respectively.

[0181] exist Figure 7 It has been shown that each of the normal mode area NEA and the privacy mode area PEA may include three types of emission areas, but the present disclosure is not limited thereto. For example, each of the normal mode area NEA and the privacy mode area PEA may include fewer or more emission areas than three types of emission areas.

[0182] In an embodiment, Figure 7 As shown in , the first emission area NEA1, the second emission area NEA2, and the third emission area NEA3 of the normal mode area NEA may be disposed side by side with the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 of the privacy mode area PEA on one side of the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 of the privacy mode area PEA, respectively. For example, the first emission area NEA1 of the normal mode area NEA may be disposed on one side or one side of the first emission area PEA1 of the privacy mode area PEA in the first direction DR1, the second emission area NEA2 of the normal mode area NEA may be disposed on one side or one side of the second emission area PEA2 of the privacy mode area PEA in the first direction DR1, and the third emission area NEA3 of the normal mode area NEA may be disposed on one side or one side of the third emission area PEA3 of the privacy mode area PEA in the first direction DR1.

[0183] The first emission area NEA1 of the normal mode area NEA and the second emission area NEA2 of the normal mode area NEA may be arranged side by side in the second direction DR2, and the first emission area PEA1 of the privacy mode area PEA and the second emission area PEA2 of the privacy mode area PEA may be arranged side by side in the second direction DR2. The third emission area NEA3 of the normal mode area NEA may be arranged on one side or one side of the first emission area NEA1 and the second emission area NEA2 of the normal mode area NEA in the first direction DR1. The third emission area PEA3 of the privacy mode area PEA may be arranged on one side or one side of the first emission area PEA1 and the second emission area PEA2 of the privacy mode area PEA in the first direction DR1.

[0184] However, arrangements of the respective first emission areas NEA1 and PEA1 , second emission areas NEA2 and PEA2 , and third emission areas NEA3 and PEA3 of the normal mode area NEA and the privacy mode area PEA are not limited thereto and may be variously modified.

[0185] In an embodiment, the first emission areas NEA1 and PEA1 may emit light of a first color, the second emission areas NEA2 and PEA2 may emit light of a second color, and the third emission areas NEA3 and PEA3 may emit light of a third color. The light of the first color may be light of a red wavelength band, the light of the second color may be light of a green wavelength band, and the light of the third color may be light of a blue wavelength band. The red wavelength band may be a wavelength band in the range of about 600 nm to about 750 nm, the green wavelength band may be a wavelength band in the range of about 480 nm to about 560 nm, and the blue wavelength band may be a wavelength band in the range of about 370 nm to about 460 nm, but the present disclosure is not limited thereto.

[0186] Each of the first emission areas NEA1 and PEA1, the second emission areas NEA2 and PEA2, and the third emission areas NEA3 and PEA3 may have a rectangular, square, or diamond shape in a plan view. Figure 7 As shown in FIG. 1 , each of the first emission areas NEA1 and PEA1 , the second emission areas NEA2 and PEA2 , and the third emission areas NEA3 and PEA3 may have a rectangular shape, but is not limited thereto.

[0187] In an embodiment, the areas of the first emission areas NEA1 and PEA1, the second emission areas NEA2 and PEA2, and the third emission areas NEA3 and PEA3 may be different from each other. For example, the areas of the third emission areas NEA3 and PEA3 may be larger than the areas of the first emission areas NEA1 and PEA1 and the second emission areas NEA2 and PEA2, but are not limited thereto. Accordingly, by arranging light emitting elements 170 of colors with relatively low lifespans in a large area, the differences in lifespans between light emitting elements of corresponding colors may be minimized. As an example, the light emitting elements may have longer lifespans in the order of red light emitting elements, green light emitting elements, and blue light emitting elements, and may be arranged in the first emission areas NEA1 and PEA1, the second emission areas NEA2 and PEA2, and the third emission areas NEA3 and PEA3, respectively, in the above order.

[0188] In an embodiment, the widths W5 and W6 of the third emission areas PEA3 and NEA3 may be smaller than the widths W1 and W2 of the first emission areas PEA1 and NEA1 and the widths W3 and W4 of the second emission areas PEA2 and NEA2. For example, for design reasons such as line arrangement of a circuit layer and improvement of color deviation, the widths W5 and W6 of the third emission areas PEA3 and NEA3 may be smaller than the widths W1 and W2 of the first emission areas PEA1 and NEA1 and the widths W3 and W4 of the second emission areas PEA2 and NEA2. In this case, in order to make the area of ​​the third emission areas PEA3 and NEA3 larger than the area of ​​the first emission areas PEA1 and NEA1 and the area of ​​the second emission areas PEA2 and NEA2, the length of the third emission areas PEA3 and NEA3 in the second direction DR2 may be larger than the length of the first emission areas PEA1 and NEA1 in the second direction DR2 and the length of the second emission areas PEA2 and NEA2 in the second direction DR2.

[0189] The display device 10 according to the embodiment can switch the viewing angle control function between the on state and the off state according to the driving method by including each of the normal mode area NEA and the privacy mode area PEA. In this regard, the arrangement relationship of the light control layer LCL relative to the normal mode area NEA and the privacy mode area PEA will be described below.

[0190] Figure 8 is a schematic plan view showing a pixel and a light control layer of a display device according to an embodiment. Fig. 9 yes Figure 8 Enlarged comparison of area A and area B. Fig.10 is along Figure 8 Schematic cross-sectional view of the display panel taken along line X2-X2'. Fig.11 is along Figure 8 Schematic cross-sectional view of the display panel taken along line X3-X3'.

[0191] Reference Figures 8 to 11 , the emission area EA may overlap the transmission area OA and / or the non-transmission area LSA in the third direction DR3. For example, the first emission areas NEA1 and PEA1, the second emission areas NEA2 and PEA2, and the third emission areas NEA3 and PEA3 may overlap the transmission area OA and / or the non-transmission area LSA in the third direction DR3.

[0192] The transmission area OA may be an area in which the light blocking film LS of the light control layer LCL is not disposed. The non-transmission area LSA may be an area in which the light blocking film LS of the light control layer LCL is disposed.

[0193] like Figure 8As shown in , the normal mode area NEA may overlap the transmission area OA. The privacy mode area PEA may overlap the transmission area OA and the non-transmission area LSA.

[0194] exist Figure 8 1 and 2 have shown by way of example that the transmission area OA and the non-transmission area LSA extend in the second direction DR2, but the present disclosure is not limited thereto. For example, the transmission area OA and the non-transmission area LSA may also extend in the first direction DR1 or in both the first direction DR1 and the second direction DR2. Hereinafter, for the convenience of explanation, it will be described by way of example that the transmission area OA and the non-transmission area LSA extend in the second direction DR2.

[0195] In the normal mode area NEA, the transmission area OA may extend in the second direction DR2. In the privacy mode area PEA, the transmission area OA and the non-transmission area LSA may extend in the second direction DR2 and may be alternately disposed in the first direction DR1.

[0196] like Fig.10 and Fig.11 As shown in , the light control layer LCL may be provided on the display layer DU or the touch sensor layer TSU. The light control layer LCL may control the viewing angle of the light emitted from the light emitting layer 172. For example, in the case where the light emitted from the light emitting layer 172 travels at a selectable angle or less with respect to the third direction DR3, the light may be emitted to the outside. On the other hand, in the case where the light emitted from the light emitting layer 172 travels at a selectable angle or less with respect to the third direction DR3, the light may be absorbed or blocked by the light blocking film LS and may not be emitted to the outside.

[0197] The light control layer LCL may include a light transmitting film LT and a light blocking film LS.

[0198] The light-blocking film LS may be disposed on the display layer DU or the touch sensor layer TSU. The light-blocking film LS may be disposed in the non-transmission area LSA. The light-blocking film LS may absorb or block light emitted from the light-emitting layer 172. The light-blocking film LS may include a light-blocking organic material. For example, the light-blocking film LS is made of a photosensitive resin capable of absorbing or blocking light, and may include an organic material containing an organic black pigment such as carbon black.

[0199] The light-blocking film LS may extend in the first direction DR1 and / or the second direction DR2. In the third direction DR3, the light-blocking film LS may not overlap with the normal mode area NEA and may overlap with the privacy mode area PEA. For example, in the third direction DR3, the light-blocking film LS may not overlap with the first emission area NEA1, the second emission area NEA2, and the third emission area NEA3 of the normal mode area NEA, and may overlap with the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 of the privacy mode area PEA.

[0200] The display device 10 according to the embodiment may switch the viewing angle control function between the on state and the off state depending on which of the normal mode area NEA or the privacy mode area PEA is driven by including the light blocking film LS not overlapping the normal mode area NEA but overlapping the privacy mode area PEA.

[0201] The light-transmitting film LT may be disposed on the display layer DU or the touch sensor layer TSU. The light-transmitting film LT may be disposed in the transmission area OA. The light-transmitting film LT may transmit light emitted from the light-emitting layer 172. The light-transmitting film LT may include a transparent organic material. For example, within the spirit and scope of the present disclosure, the light-transmitting film LT may include an organic film made of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, a polyimide resin, or the like. In an embodiment, the light-transmitting film LT may include silicon oxynitride or silicon oxide.

[0202] The light-transmitting film LT may extend in the first direction DR1 and / or the second direction DR2. The light-transmitting film LT may overlap the normal mode area NEA and the privacy mode area PEA in the third direction DR3. For example, the light-transmitting film LT may overlap the first emission area NEA1, the second emission area NEA2, and the third emission area NEA3 of the normal mode area NEA and the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 of the privacy mode area PEA in the third direction DR3.

[0203] In an embodiment, Fig.10 and Fig.11 As shown in , the thickness H1 of the light control layer LCL may be in the range of about 10 μm to about 50 μm, but is not limited thereto. For example, the thickness H1 of the light control layer LCL may be about 35 μm. The distance H2 between the lower surface of the light control layer LCL and the lower surface of the light emitting layer 172 may be in the range of about 5 μm to about 10 μm, but is not limited thereto. For example, the distance H2 between the lower surface of the light control layer LCL and the lower surface of the light emitting layer 172 may be about 8 μm.

[0204] In an embodiment, the light blocking film LS may include a first louver LV1, a second louver LV2, a third louver LV3, and a fourth louver LV4. Each of the first louver LV1, the second louver LV2, the third louver LV3, and the fourth louver LV4 may extend in the second direction DR2. The first louver LV1, the second louver LV2, the third louver LV3, and the fourth louver LV4 may be disposed to be spaced apart from each other in the first direction DR1.

[0205] The first louver LV1 may be disposed on one side or one side of the first emission area PEA1 and the second emission area PEA2 of the privacy mode area PEA in the first direction DR1. For example, the first louver LV1 may be disposed on the left side of the first emission area PEA1 and the second emission area PEA2 of the privacy mode area PEA in the drawing. The first louver LV1 may not overlap the first emission area PEA1 and the second emission area PEA2 in the third direction DR3.

[0206] The second louver LV2 may be disposed on one side or one side of the first louver LV1 in the first direction DR1. For example, the second louver LV2 may be disposed on the right side of the first louver LV1 in the drawing. The second louver LV2 may overlap the first emission area PEA1 and the second emission area PEA2 of the privacy mode area PEA in the third direction DR3.

[0207] The third louver LV3 may be disposed on one side or one side of the third emission area PEA3 of the privacy mode area PEA in the first direction DR1. For example, the third louver LV3 may be disposed on the left side of the third emission area PEA3 of the privacy mode area PEA in the drawing. The third louver LV3 may not overlap with the third emission area PEA3 in the third direction DR3.

[0208] The fourth louver LV4 may be disposed on one side or one side of the third louver LV3 in the first direction DR1. For example, the fourth louver LV4 may be disposed on the right side of the third louver LV3 in the drawing. The fourth louver LV4 may overlap the third emission area PEA3 of the privacy mode area PEA in the third direction DR3.

[0209] The first louver LV1 and the second louver LV2 may be respectively disposed on both sides of the first edge of the first emission area PEA1 and the second emission area PEA2 of the privacy mode area PEA. For example, the first edge of the first emission area PEA1 and the second emission area PEA2 may be an edge located on the other side of the first emission area PEA1 and the second emission area PEA2 in the first direction DR1. Hereinafter, the first edge may be referred to as a first reference line RFL1.

[0210] The third louver LV3 and the fourth louver LV4 may be respectively arranged on both sides of the second side of the third emission area PEA3 of the privacy mode area PEA. For example, the second side of the third emission area PEA3 may be an edge located on the other side of the third emission area PEA3 in the first direction DR1. Hereinafter, the second side may be referred to as a second reference line RFL2.

[0211] The third side of the first emission area PEA1 and the second emission area PEA2 may be located on a side opposite to the first side of the first emission area PEA1 and the second emission area PEA2. For example, the third side of the first emission area PEA1 and the second emission area PEA2 may be a side located on one side or one side of the first emission area PEA1 and the second emission area PEA2 in the first direction DR1. Hereinafter, the third side may be referred to as a third reference line RFL3.

[0212] The fourth side of the third emission area PEA3 may be located on a side opposite to the second side of the third emission area PEA3. For example, the fourth side of the third emission area PEA3 may be a side located on one side or one side of the third emission area PEA3 in the first direction DR1. Hereinafter, the fourth side may be referred to as a fourth reference line RFL4.

[0213] The non-transmission area LSA may include first, second, third, and fourth non-transmission areas LSA1, LSA2, LSA3, and LSA4. The transmission area OA may include first, second, third, and fourth transmission areas OA1, OA2, OA3, and OA4.

[0214] The first non-transmission area LSA1 may be an area in which the first louver LV1 is disposed. The first non-transmission area LSA1 may be an area overlapping with the first louver LV1. The second non-transmission area LSA2 may be an area in which the second louver LV2 is disposed. The second non-transmission area LSA2 may be an area overlapping with the second louver LV2. The third non-transmission area LSA3 may be an area in which the third louver LV3 is disposed. The third non-transmission area LSA3 may be an area overlapping with the third louver LV3. The fourth non-transmission area LSA4 may be an area in which the fourth louver LV4 is disposed. The fourth non-transmission area LSA4 may be an area overlapping with the fourth louver LV4.

[0215] The first transmission area OA1 may be an area disposed between the first louver LV1 and the second louver LV2 in the first direction DR1. The first transmission area OA1 may be disposed between the first non-transmission area LSA1 and the second non-transmission area LSA2 in the first direction DR1. The second transmission area OA2 may be an area disposed between the second louver LV2 and the third louver LV3 in the first direction DR1. The second transmission area OA2 may be disposed between the second non-transmission area LSA2 and the third non-transmission area LSA3 in the first direction DR1. The third transmission area OA3 may be an area disposed between the third louver LV3 and the fourth louver LV4 in the first direction DR1. The third transmission area OA3 may be disposed between the third non-transmission area LSA3 and the fourth non-transmission area LSA4 in the first direction DR1. The fourth transmission area OA4 may be disposed on one side or one side of the fourth louver LV4 in the first direction DR1. The fourth transmission area OA4 may be disposed on one side or one side of the fourth non-transmission area LSA4 in the first direction DR1.

[0216] It has been shown in the accompanying drawings that the first louver LV1 and the second louver LV2 are arranged to be approximately adjacent to the left side of the first emission area PEA1 and the second emission area PEA2, and the third louver LV3 and the fourth louver LV4 are arranged to be approximately adjacent to the left side of the third emission area PEA3, but the present disclosure is not limited to this. For example, as shown in the accompanying drawings, in a case where the viewing angle from the display device 10 in front of the passenger seat toward the driver's seat is blocked, the louver may be approximately adjacent to the left side of the emission area. However, in a case where the viewing angle from the display device 10 in front of the driver's seat toward the passenger seat is blocked, the louver may also be approximately adjacent to the right side of the emission area. Within the same technical spirit, the upper, lower, left, and right positions of the louver may be freely modified according to the application example of the display device 10.

[0217] In the following, reference will be made to Figures 9 to 11 The positional relationship between the first emission area PEA1, the second emission area PEA2 and the third emission area PEA3 of the privacy mode area PEA and the first louver LV1, the second louver LV2, the third louver LV3 and the fourth louver LV4 is described in detail. Regarding the positional relationship between the first emission area PEA1, the second emission area PEA2 and the third emission area PEA3 of the privacy mode area PEA and the first louver LV1, the second louver LV2, the third louver LV3 and the fourth louver LV4, the same technical concept as that of the second emission area PEA2 can be applied to the first emission area PEA1, and therefore, the second emission area PEA2 and the third emission area PEA3 will be described by way of example hereinafter.

[0218] In the embodiments, as mentioned above, Figure 7As described, in the first direction DR1, the width W3 of the second emission area PEA2 and the width W5 of the third emission area PEA3 may be different from each other. For example, the width W3 of the second emission area PEA2 in the first direction DR1 may be greater than the width W5 of the third emission area PEA3 in the first direction DR1. Accordingly, the distance between the first reference line RFL1 and the third reference line RFL3 in the first direction DR1 may be greater than the distance between the second reference line RFL2 and the fourth reference line RFL4 in the first direction DR1.

[0219] When the width W3 of the second emission area PEA2 is greater than the width W5 of the third emission area PEA3, when the distance L2 between the first baseline RFL1 of the second emission area PEA2 and the first louver LV1 and the distance L7 between the second baseline RFL2 of the third emission area PEA3 and the third louver LV3 are the same as each other, and the distance L3 between the first baseline RFL1 of the second emission area PEA2 and the second louver LV2 and the distance L8 between the second baseline RFL2 of the third emission area PEA3 and the fourth louver LV4 are the same as each other, as the viewing angle gradually increases, the time point when the emission area is completely blocked by the louvers may occur earlier in the third emission area PEA3 than in the second emission area PEA2. Fig. 9 , Fig.10 , Fig.15 and Fig.16 Distances L1 and L4 are also included.

[0220] For example, in the case where the distance L2 between the first reference line RFL1 of the second emission area PEA2 and the first louver LV1 and the distance L7 between the second reference line RFL2 of the third emission area PEA3 and the third louver LV3 are the same as each other and the distance L3 between the first reference line RFL1 of the second emission area PEA2 and the second louver LV2 and the distance L8 between the second reference line RFL2 of the third emission area PEA3 and the fourth louver LV4 are the same as each other, the width of the left area of ​​the second emission area PEA2 relative to the second louver LV2 and the width of the left area of ​​the third emission area PEA3 relative to the fourth louver LV4 may be the same as each other. On the other hand, the width W3 of the second emission area PEA2 is greater than the width W5 of the third emission area PEA3, and therefore, the distance L5 between the third reference line RFL3 and the second louver LV2 may be greater than the distance L10 between the fourth reference line RFL4 and the fourth louver LV4. For example, the width of the right area of ​​the second emission area PEA2 relative to the second louver LV2 may be greater than the width of the right area of ​​the third emission area PEA3 relative to the fourth louver LV4. Accordingly, as the viewing angle gradually increases, the time point at which the emission area is completely blocked by the blinds may occur earlier in the third emission area PEA3 than in the second emission area PEA2.

[0221] Accordingly, as the viewing angle reaches a given angle and increases, a color deviation phenomenon may occur in which only the colors of the first emission area PEA1 and the second emission area PEA2 are viewed. For example, in a case where the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 emit red light, green light, and blue light, respectively, a time point at which the third emission area PEA3 is first reached is completely blocked, and therefore, a yellowing phenomenon may occur in which the red light and the green light emitted by the first emission area PEA1 and the second emission area PEA2 are mixed with each other so that yellow is viewed.

[0222] In the display device 10 according to the embodiment, such a color deviation phenomenon can be minimized by making the distances L2 and L3 between the first reference line RFL1 and the first and second louvers LV1 and LV2 and the distances L7 and L8 between the second reference line RFL2 and the third and fourth louvers LV3 and LV4 different from each other.

[0223] For example, the positional relationship of the first louver LV1 and the second louver LV2 with respect to the first reference line RFL1 and the positional relationship of the third louver LV3 and the fourth louver LV4 with respect to the second reference line RFL2 may be different from each other.

[0224] In an embodiment, a distance L2 between the first reference line RFL1 and the first louver LV1 in the first direction DR1 may be different from a distance L7 between the second reference line RFL2 and the third louver LV3 in the first direction DR1. For example, the distance L2 between the first reference line RFL1 and the first louver LV1 in the first direction DR1 may be smaller than a distance L7 between the second reference line RFL2 and the third louver LV3 in the first direction DR1. For example, the distance between the first louver LV1 and the first reference line RFL1 in the first direction DR1 may be smaller than the distance between the third louver LV3 and the second reference line RFL2 in the first direction DR1. Accordingly, the distance between the first louver LV1 and the second emission area PEA2 in the first direction DR1 may be smaller than the distance between the third louver LV3 and the third emission area PEA3 in the first direction DR1. The length of a portion of the first transmission area OA1 that does not overlap with the second emission area PEA2 in the first direction DR1 may be smaller than the length of a portion of the third transmission area OA3 that does not overlap with the third emission area PEA3 in the first direction DR1.

[0225] Accordingly, as the viewing angle increases, the time point at which the third emission area PEA3 is completely blocked by the third louver LV3 and the fourth louver LV4 can be delayed to become close to the time point at which the second emission area PEA2 is completely blocked by the first louver LV1 and the second louver LV2. Accordingly, the color deviation phenomenon can be minimized.

[0226] In an embodiment, a distance L3 between the first reference line RFL1 and the second louver LV2 in the first direction DR1 may be different from a distance L8 between the second reference line RFL2 and the fourth louver LV4 in the first direction DR1. For example, the distance L3 between the first reference line RFL1 and the second louver LV2 in the first direction DR1 may be greater than a distance L8 between the second reference line RFL2 and the fourth louver LV4 in the first direction DR1. For example, a length by which the first transmission area OA1 overlaps the second emission area PEA2 in the first direction DR1 may be greater than a length by which the third transmission area OA3 overlaps the third emission area PEA3 in the first direction DR1.

[0227] Accordingly, the length of the overlap between the third emission area PEA3 and the fourth transmission area OA4 increases, so that as the viewing angle increases, the time point when the third emission area PEA3 is completely blocked by the third louver LV3 and the fourth louver LV4 can be delayed to become close to the time point when the second emission area PEA2 is completely blocked by the first louver LV1 and the second louver LV2. Accordingly, the color deviation phenomenon can be minimized.

[0228] In an embodiment, a distance L5 between the third reference line RFL3 and the second louver LV2 in the first direction DR1 may be different from a distance L10 between the fourth reference line RFL4 and the fourth louver LV4 in the first direction DR1. For example, the distance L5 between the third reference line RFL3 and the second louver LV2 in the first direction DR1 may be greater than a distance L10 between the fourth reference line RFL4 and the fourth louver LV4 in the first direction DR1. For example, a length by which the second transmission area OA2 overlaps the second emission area PEA2 in the first direction DR1 may be greater than a length by which the fourth transmission area OA4 overlaps the third emission area PEA3 in the first direction DR1.

[0229] In the display device 10 according to the embodiment, the distance L5 between the third reference line RFL3 and the second louver LV2 is greater than the distance L10 between the fourth reference line RFL4 and the fourth louver LV4, and therefore, simply in terms of distance, the time point when the right part of the third emission area PEA3 is completely blocked by the fourth louver LV4 may be earlier than the time point when the right part of the second emission area PEA2 is completely blocked by the second louver LV2. However, as described above, due to the effect of the third louver LV3 moving to the left, the degree to which the left part of the third emission area PEA3 is blocked by the third louver LV3 can be reduced. Accordingly, even if the distance L5 between the third reference line RFL3 and the second louver LV2 is greater than the distance L10 between the fourth reference line RFL4 and the fourth louver LV4, the color deviation phenomenon can be minimized.

[0230] In an embodiment, the widths L1, L4, L6, and L9 of the first louver LV1, the second louver LV2, the third louver LV3, and the fourth louver LV4 may be the same as each other. For example, the widths L1, L4, L6, and L9 of the first louver LV1, the second louver LV2, the third louver LV3, and the fourth louver LV4 may be in the range of about 2 μm to about 10 μm. For example, the widths L1, L4, L6, and L9 of the first louver LV1, the second louver LV2, the third louver LV3, and the fourth louver LV4 may be about 4 μm. The distance between the first louver LV1 and the second louver LV2 may be the same as the distance between the third louver LV3 and the fourth louver LV4. For example, the length of the first transmission area OA1 in the first direction DR1 may be the same as the length of the third transmission area OA3 in the first direction DR1. For example, the distance between the first louver LV1 and the second louver LV2 and the distance between the third louver LV3 and the fourth louver LV4 may be in the range of about 5 μm to about 20 μm, but are not limited thereto.

[0231] Hereinafter, the color deviation improving effect of the display device 10 according to the embodiment will be described by comparing luminance values ​​according to viewing angles of the display device 10 according to the related art and the display device 10 according to the embodiment with each other.

[0232] Fig.12 is a graph showing brightness values ​​of emission areas according to viewing angles in a display device according to the related art. Fig.13 is a graph showing luminance values ​​of emission areas according to viewing angles in a display device according to an embodiment.

[0233] Reference Fig.12 and Fig.13 as well as Figures 8 to 11, the first and second curves G1 and G2 are curves showing changes in brightness of the first, second, and third emission areas PEA1, PEA2, and PEA3 of the privacy mode area PEA according to changes in viewing angles.

[0234] The first curve G1 shows the change in brightness in the display device 10 according to the prior art, and the second curve G2 shows the change in brightness in the display device 10 according to the embodiment. The display device 10 according to the prior art is different from the display device 10 according to the embodiment in that the distances L2 and L3 between the first reference line RFL1 and the first louver LV1 and the second louver LV2 and the distances L7 and L8 between the second reference line RFL2 and the third louver LV3 and the fourth louver LV4 are the same as each other. That is, the distance L2 between the first reference line RFL1 and the first louver LV1 is equal to the distance L7 between the second reference line RFL2 and the third louver LV3, and the distance L3 between the first reference line RFL1 and the second louver LV2 is equal to the distance L8 between the second reference line RFL2 and the fourth louver LV4.

[0235] According to the first curve G1, it can be seen that when the viewing angle is about 15°, a brightness difference occurs between the first emission area PEA1 and the second emission area PEA2 and the third emission area PEA3. Due to this brightness difference, white and black may not be clearly expressed, and a deviation may occur toward the colors emitted by the first emission area PEA1 and the second emission area PEA2.

[0236] For example, at a viewing angle of about 15°, a brightness difference between the first emission area PEA1 and the second emission area PEA2 and the third emission area PEA3 corresponding to the first difference UV0 may occur. In this case, the Δu'v' value may be about 0.019. At a viewing angle of about 20°, the Δu'v' value may be about 0.014, and at a viewing angle of about 25°, the Δu'v' value may be about 0.019.

[0237] In the specification, such values ​​refer to values ​​measured based on the CIE 1976 color coordinate system.

[0238] According to the second curve G2, it can be seen that, in the case where the viewing angle is about 15°, almost no brightness difference occurs between the first emission area PEA1 and the second emission area PEA2 and the third emission area PEA3.

[0239] For example, at a viewing angle of about 15°, a brightness difference between the first emission area PEA1 and the second emission area PEA2 and the third emission area PEA3 corresponding to the second difference UV1 may occur. In this case, the Δu'v' value may be about 0.002. At a viewing angle of about 20°, the Δu'v' value may be about 0.004, and at a viewing angle of about 25°, the Δu'v' value may be about 0.019.

[0240] Thus, in the display device 10 according to the embodiment, such a color deviation phenomenon can be minimized by making the distances L2 and L3 between the first reference line RFL1 and the first and second louvers LV1 and LV2 and the distances L7 and L8 between the second reference line RFL2 and the third and fourth louvers LV3 and LV4 different from each other.

[0241] In the following, other embodiments of the display device according to the embodiment will be described. In the following embodiments, the same components as those of the above embodiments will be represented by the same reference numerals, and their repeated descriptions may be omitted or simplified, and the contents different from the above contents will be described.

[0242] Fig.14 is a schematic plan view showing a pixel and a light control layer of a display device according to an embodiment. Fig.15 yes Fig.14 Enlarged comparison of area C and area D. Fig.16 is along Fig.14 Schematic cross-sectional view of the display panel taken along line X4-X4'. Fig.17 is along Fig.14 Schematic cross-sectional view of the display panel taken along line X5-X5'.

[0243] Reference Figures 14 to 17 The display device 10 according to the embodiment can be used in conjunction with the reference Figure 8 The display device 10 of the embodiment described above is different in that the distance between the first louver LV1 and the second louver LV2 and the distance between the third louver LV3 and the fourth louver LV4 are different from each other.

[0244] In the spirit and scope of the present disclosure, by way of example, in the display device 10 according to the embodiment, as in the reference Figure 8 Like the display device 10 of the described embodiment, the color deviation phenomenon can be minimized by making the distances L2 and L3 between the first reference line RFL1 and the first and second louvers LV1 and LV2 and the distances L7 and L8 between the second reference line RFL2 and the third and fourth louvers LV3 and LV4 different from each other.

[0245] For example, the positional relationship of the first louver LV1 and the second louver LV2 with respect to the first reference line RFL1 and the positional relationship of the third louver LV3 and the fourth louver LV4 with respect to the second reference line RFL2 may be different from each other.

[0246] However, within the spirit and scope of the present disclosure, Figure 8 Unlike the display device 10 of the embodiment described above, in the display device 10 according to the embodiment, the distance between the first louver LV1 and the second louver LV2 and the distance between the third louver LV3 and the fourth louver LV4 may be different from each other.

[0247] For example, according to the reference Figure 8 In the display device 10 of the embodiment described in the above, the distances L2 and L3 between the first reference line RFL1 and the first louver LV1 and the second louver LV2 and the distances L7 and L8 between the second reference line RFL2 and the third louver LV3 and the fourth louver LV4 can be made different from each other while keeping the distance between the first louver LV1 and the second louver LV2 and the distance between the third louver LV3 and the fourth louver LV4 the same. On the other hand, in the display device 10 according to the embodiment, the color deviation phenomenon can be further minimized by making not only the distances L2 and L3 between the first reference line RFL1 and the first louver LV1 and the second louver LV2 and the distances L7 and L8 between the second reference line RFL2 and the third louver LV3 and the fourth louver LV4 different from each other, but also the distance between the first louver LV1 and the second louver LV2 and the distance between the third louver LV3 and the fourth louver LV4 different from each other.

[0248] By way of example, the distance between the first louver LV1 and the second louver LV2 may be different from the distance between the third louver LV3 and the fourth louver LV4. For example, the distance between the first louver LV1 and the second louver LV2 may be smaller than the distance between the third louver LV3 and the fourth louver LV4. For example, the length of the first transmission area OA1 in the first direction DR1 may be smaller than the length of the third transmission area OA3 in the first direction DR1.

[0249] In an embodiment, a distance L2 between the first reference line RFL1 and the first louver LV1 in the first direction DR1 may be different from a distance L7 between the second reference line RFL2 and the third louver LV3 in the first direction DR1. For example, the distance L2 between the first reference line RFL1 and the first louver LV1 in the first direction DR1 may be smaller than a distance L7 between the second reference line RFL2 and the third louver LV3 in the first direction DR1. For example, the distance between the first louver LV1 and the first reference line RFL1 in the first direction DR1 may be smaller than the distance between the third louver LV3 and the second reference line RFL2 in the first direction DR1. Accordingly, the distance between the first louver LV1 and the second emission area PEA2 in the first direction DR1 may be smaller than the distance between the third louver LV3 and the third emission area PEA3 in the first direction DR1. The length of a portion of the first transmission area OA1 that does not overlap with the second emission area PEA2 in the first direction DR1 may be smaller than the length of a portion of the third transmission area OA3 that does not overlap with the third emission area PEA3 in the first direction DR1.

[0250] Accordingly, the time point when the third emission area PEA3 is completely blocked by the third louver LV3 and the fourth louver LV4 can be delayed to become close to the time point when the second emission area PEA2 is completely blocked by the first louver LV1 and the second louver LV2. Accordingly, the color deviation phenomenon can be minimized.

[0251] In an embodiment, a distance L3 between the first reference line RFL1 and the second louver LV2 in the first direction DR1 may be different from a distance L8 between the second reference line RFL2 and the fourth louver LV4 in the first direction DR1. For example, the distance L3 between the first reference line RFL1 and the second louver LV2 in the first direction DR1 may be smaller than a distance L8 between the second reference line RFL2 and the fourth louver LV4 in the first direction DR1. For example, a length by which the first transmission area OA1 overlaps the second emission area PEA2 in the first direction DR1 may be smaller than a length by which the third transmission area OA3 overlaps the third emission area PEA3 in the first direction DR1.

[0252] Accordingly, the length of the third emission area PEA3 overlapping the third transmission area OA3 increases, so that as the viewing angle increases, the time point when the third emission area PEA3 is completely blocked by the third louver LV3 and the fourth louver LV4 can be delayed to become close to the time point when the second emission area PEA2 is completely blocked by the first louver LV1 and the second louver LV2. Accordingly, the color deviation phenomenon can be minimized.

[0253] In an embodiment, a distance L5 between the third reference line RFL3 and the second louver LV2 in the first direction DR1 may be different from a distance L10 between the fourth reference line RFL4 and the fourth louver LV4 in the first direction DR1. For example, the distance L5 between the third reference line RFL3 and the second louver LV2 in the first direction DR1 may be greater than a distance L10 between the fourth reference line RFL4 and the fourth louver LV4 in the first direction DR1. For example, a length by which the second transmission area OA2 overlaps the second emission area PEA2 in the first direction DR1 may be greater than a length by which the fourth transmission area OA4 overlaps the third emission area PEA3 in the first direction DR1.

[0254] In the display device 10 according to the embodiment, the distance L5 between the third reference line RFL3 and the second louver LV2 is greater than the distance L10 between the fourth reference line RFL4 and the fourth louver LV4, and therefore, simply in terms of distance, the time point when the right part of the third emission area PEA3 is completely blocked by the fourth louver LV4 may be earlier than the time point when the right part of the second emission area PEA2 is completely blocked by the second louver LV2. However, as described above, due to the effect of the third louver LV3 moving to the left, the degree to which the left part of the third emission area PEA3 is blocked by the third louver LV3 can be reduced. Accordingly, even if the distance L5 between the third reference line RFL3 and the second louver LV2 is greater than the distance L10 between the fourth reference line RFL4 and the fourth louver LV4, the color deviation phenomenon can be minimized.

[0255] Fig.18 is a graph showing luminance values ​​of emission areas according to viewing angles in a display device according to an embodiment.

[0256] Reference Fig.18 and Figures 14 to 17 , a third curve G3 is a curve showing changes in brightness of the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 of the privacy mode area PEA according to changes in viewing angles.

[0257] According to the third curve G3, it can be seen that, in the case where the viewing angle is about 15°, almost no brightness difference occurs between the first emission area PEA1 and the second emission area PEA2 and the third emission area PEA3.

[0258] For example, at a viewing angle of about 15°, a brightness difference between the first emission area PEA1, the second emission area PEA2, and the third emission area PEA3 corresponding to the third difference UV2 may occur. In this case, the Δu'v' value may be about 0.003. At a viewing angle of about 20°, the Δu'v' value may be about 0.008, and at a viewing angle of about 25°, the Δu'v' value may be about 0.008. It can be seen that within the spirit and scope of the present disclosure, at a viewing angle of about 25°, the brightness difference between the first emission area PEA1 and the second emission area PEA2 and the third emission area PEA3 corresponding to the third difference UV2 may occur. In this case, the Δu'v' value may be about 0.003. At a viewing angle of about 20°, the Δu'v' value may be about 0.008, and at a viewing angle of about Figure 8 Compared with the display device 10 of the embodiment described above, the color deviation phenomenon is further improved.

[0259] In the display device 10 according to the embodiment, this color deviation phenomenon can be further minimized by making the distances L2 and L3 between the first reference line RFL1 and the first louver LV1 and the second louver LV2, and the distances L7 and L8 between the second reference line RFL2 and the third louver LV3 and the fourth louver LV4 different from each other, and making the distance between the first louver LV1 and the second louver LV2, and the distance between the third louver LV3 and the fourth louver LV4 different from each other.

[0260] At the end of the detailed description, those skilled in the art will recognize that many changes and modifications may be made to the disclosed embodiments without departing substantially from the principles of the present disclosure. Therefore, the disclosed embodiments are used in a general and descriptive sense only and not for the purpose of limitation.

Claims

1. A display device, comprising: A light-emitting element layer, wherein the light-emitting element layer is disposed on the substrate, and the light-emitting element layer includes a first light-emitting element and a second light-emitting element; A light control layer, the light control layer is disposed on the light emitting element layer, the light control layer includes a plurality of light blocking films spaced apart from each other, and a light transparent film disposed between the plurality of light blocking films; as well as a first emission region and a second emission region, through which the light emitted from the first light emitting element and the second light emitting element is emitted respectively, wherein: The plurality of light-blocking films include: a first louver and a second louver, the first louver and the second louver are respectively arranged on both sides of a first side of the first emission area, wherein the first side is arranged between the first louver and the second louver; and a third louver and a fourth louver, wherein the third louver and the fourth louver are respectively arranged on both sides of a second side of the second emission area, wherein the second side is arranged between the third louver and the fourth louver, a width of the first emission region is different from a width of the second emission region, and A distance between the first side and the first louver is different from a distance between the second side and the third louver.

2. The display device according to claim 1, wherein: The width of the first emission region is greater than the width of the second emission region.

3. The display device according to claim 2, wherein: The distance between the first louver and the second louver is the same as the distance between the third louver and the fourth louver.

4. The display device according to claim 3, wherein: The distance between the first side and the first louver is smaller than the distance between the second side and the third louver.

5. The display device according to claim 4, wherein: The width of the first louver, the width of the second louver, the width of the third louver and the width of the fourth louver are the same.

6. The display device according to claim 4, wherein: The length of a portion of the light-transmitting film disposed between the first louver and the second louver that does not overlap with the first emission area is smaller than the length of a portion of the light-transmitting film disposed between the third louver and the fourth louver that does not overlap with the second emission area.

7. The display device according to claim 3, wherein: The length of the light-transmitting film disposed between the first louver and the second louver overlapping with the first emission area is greater than the length of the light-transmitting film disposed between the third louver and the fourth louver overlapping with the second emission area.

8. The display device according to claim 2, wherein: A distance between the first side and the second louver is different from a distance between the second side and the fourth louver.

9. The display device according to claim 8, wherein: The distance between the first side and the second louver is greater than the distance between the second side and the fourth louver.

10. The display device according to claim 2, wherein: The first emission area includes a third side disposed on a side opposite to the first side, wherein the second louver is disposed between the third side and the side opposite to the first side, and The second emission area includes a fourth side disposed on a side opposite to the second side, wherein the fourth louver is disposed between the fourth side and the side opposite to the second side.

11. The display device according to claim 10, wherein: The distance between the third side and the second louver is greater than the distance between the fourth side and the fourth louver.

12. The display device according to claim 1, wherein: The first louver does not overlap with the first emission area, and The third louver does not overlap with the second emission area.

13. The display device according to claim 1, wherein: The second louver overlaps the first emission area, and The fourth louver overlaps with the second emission area.

14. A display device, comprising: A light-emitting element layer, wherein the light-emitting element layer is disposed on the substrate, and the light-emitting element layer includes a first light-emitting element and a second light-emitting element; A light control layer, the light control layer is disposed on the light emitting element layer, the light control layer includes a plurality of light blocking films spaced apart from each other, and a light transparent film disposed between the plurality of light blocking films; as well as a first emission region and a second emission region, through which the light emitted from the first light emitting element and the second light emitting element is emitted respectively, wherein: The plurality of light-blocking films include: a first louver and a second louver, the first louver and the second louver are respectively arranged on both sides of a first side of the first emission area, wherein the first side is arranged between the first louver and the second louver; and a third louver and a fourth louver, wherein the third louver and the fourth louver are respectively arranged on both sides of a second side of the second emission area, wherein the second side is arranged between the third louver and the fourth louver, a width of the first emission region is different from a width of the second emission region, and A distance between the first louver and the second louver is different from a distance between the third louver and the fourth louver.

15. The display device according to claim 14, wherein: The width of the first emission region is greater than the width of the second emission region.

16. The display device according to claim 15, wherein: The distance between the first louver and the second louver is smaller than the distance between the third louver and the fourth louver.

17. The display device according to claim 16, wherein: A distance between the first side and the first louver is smaller than a distance between the second side and the third louver.

18. The display device according to claim 17, wherein: The width of the first louver, the width of the second louver, the width of the third louver and the width of the fourth louver are the same.

19. The display device according to claim 17, wherein: The length of a portion of the light-transmitting film disposed between the first louver and the second louver that does not overlap with the first emission area is smaller than the length of a portion of the light-transmitting film disposed between the third louver and the fourth louver that does not overlap with the second emission area.

20. The display device according to claim 15, wherein: A distance between the first side and the second louver is different from a distance between the second side and the fourth louver.

21. The display device according to claim 20, wherein: The distance between the first side and the second louver is smaller than the distance between the second side and the fourth louver.

22. The display device according to claim 15, wherein: The first emission area includes a third side disposed on a side opposite to the first side, wherein the second louver is disposed between the third side and the side opposite to the first side, and The second emission area includes a fourth side disposed on a side opposite to the second side, wherein the fourth louver is disposed between the fourth side and the side opposite to the second side.

23. The display device according to claim 22, wherein: The distance between the third side and the second louver is greater than the distance between the fourth side and the fourth louver.

24. The display device according to claim 14, wherein: The first louver does not overlap with the first emission area, and The third louver does not overlap with the second emission area.

25. The display device according to claim 14, wherein: The second louver overlaps the first emission area, and the fourth louver overlaps the second emission area.

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