Display device and portable terminal

Abstract

A display device and a portable terminal are disclosed. The display device can include a substrate, a display element layer disposed on the substrate and including a plurality of light emitting elements, a circuit element layer disposed between the substrate and the display element layer and including a plurality of signal wirings that transmit signals for driving the light emitting elements and a plurality of light transmitting regions that are located between the signal wirings in a planar surface and transmit light, a first light blocking layer disposed between the substrate and the circuit element layer and including a plurality of first opening portions, and a second light blocking layer disposed on the first light blocking layer and including a plurality of second opening portions. The second light blocking layer can include second sub light blocking layers arranged apart from each other in a first direction and respectively equipped with the second opening portions. The first opening portions of the first light blocking layer can overlap with regions between the second sub light blocking layers.

Description

Technical Field

[0001] This invention relates to a display device and a portable terminal. Background Technology

[0002] Recently, with the widespread application of display devices such as smartphones and tablet PCs, biometric authentication methods using users' fingerprints have become widely used. To provide fingerprint sensing functionality, fingerprint sensors can be provided either built into or attached to the display device.

[0003] Fingerprint sensors can be constructed using optical sensing methods, for example. Optical fingerprint sensors can be equipped with a light source, a lens, and an array of optical sensors. Summary of the Invention

[0004] The purpose of this invention is to provide a display device and a portable terminal that include a light-blocking layer capable of minimizing bending stress.

[0005] A display device according to an embodiment of the present invention may include: a substrate; a display element layer disposed on the substrate and including a plurality of light-emitting elements; a circuit element layer disposed between the substrate and the display element layer, including a plurality of signal wirings and a plurality of light-transmitting regions, wherein the plurality of signal wirings transmit signals for driving the light-emitting elements, and the plurality of light-transmitting regions are located between the signal wirings in a plane and transmit light; a first light-blocking layer disposed between the substrate and the circuit element layer and including a plurality of first openings; and a second light-blocking layer disposed on the first light-blocking layer and including a plurality of second openings. The second light-blocking layer may include second sub-light-blocking layers arranged spaced apart from each other along a first direction and respectively equipped with second openings. The first openings of the first light-blocking layer may overlap with the regions between the second sub-light-blocking layers.

[0006] In one embodiment of the present invention, the first opening and the second opening may overlap with the light-transmitting areas that are different from each other.

[0007] In one embodiment of the present invention, the substrate is capable of bending with respect to a bending axis.

[0008] In one embodiment of the present invention, the second sub-light blocking layer adjacent to the bending axis in the second sub-light blocking layer can separate the bending axis therebetween.

[0009] In one embodiment of the present invention, the first opening of the first light-blocking layer may be arranged to overlap with the bending axis.

[0010] In one embodiment of the present invention, the first light-blocking layer may include first sub-light-blocking layers arranged spaced apart from each other along the first direction and respectively equipped with the first opening.

[0011] In one embodiment of the present invention, at least a portion of one of the first sub-light blocking layers and at least a portion of one of the second sub-light blocking layers may overlap each other.

[0012] In one embodiment of the present invention, the first opening of each of the first sub-light blocking layers may be configured not to overlap with the second sub-light blocking layer, and the second opening of each of the second sub-light blocking layers may be configured not to overlap with the first sub-light blocking layer.

[0013] In one embodiment of the present invention, the second light-blocking layer may be electrically connected to at least one of the signal wirings of the circuit element layer.

[0014] In one embodiment of the present invention, the first light-blocking layer may be electrically connected to the second light-blocking layer.

[0015] In one embodiment of the present invention, the display device may further include: a sensor layer disposed on the opposite side of the side of the substrate on which the first light-blocking layer is disposed, and for sensing incident light.

[0016] In one embodiment of the present invention, the first opening and the second opening may respectively provide a path for the light incident on the sensor layer.

[0017] A display device according to an embodiment of the present invention may include: a substrate; a display element layer disposed on the substrate and including a plurality of light-emitting elements; a circuit element layer disposed between the substrate and the display element layer, including a plurality of signal wirings and a plurality of light-transmitting regions, wherein the plurality of signal wirings transmit signals for driving the light-emitting elements, and the plurality of light-transmitting regions are located between the signal wirings in a plane and transmit light; a first light-blocking layer disposed between the substrate and the circuit element layer and including a plurality of first openings; and a second light-blocking layer disposed on the first light-blocking layer and including a plurality of second openings. The first light-blocking layer may include first sub-light-blocking layers arranged spaced apart from each other along a first direction and respectively equipped with the first openings. The second openings of the second light-blocking layer may overlap with the regions between the first sub-light-blocking layers.

[0018] In one embodiment of the present invention, the substrate is capable of bending with respect to a bending axis, and the first sub-light blocking layer adjacent to the bending axis in the first sub-light blocking layer can place the bending axis therebetween and separate it.

[0019] In one embodiment of the present invention, the second light-blocking layer may include second sub-light-blocking layers arranged spaced apart from each other along the first direction and respectively equipped with the second opening.

[0020] In one embodiment of the present invention, at least a portion of one of the first sub-light blocking layers and at least a portion of one of the second sub-light blocking layers may overlap each other.

[0021] In one embodiment of the present invention, the first opening of each of the first sub-light blocking layers may be configured not to overlap with the second sub-light blocking layer, and the second opening of each of the second sub-light blocking layers may be configured not to overlap with the first sub-light blocking layer.

[0022] In one embodiment of the present invention, a portion of at least one of the first light-blocking layer and the second light-blocking layer may overlap with the bending axis.

[0023] In one embodiment of the present invention, the first sub-light blocking layer may extend in a zigzag pattern along a second direction different from the first direction, and the second light blocking layer includes second sub-light blocking layers arranged spaced apart from each other along the first direction and extending in a zigzag pattern along the second direction.

[0024] A portable terminal according to an embodiment of the present invention may include: a substrate; a display element layer disposed on the substrate and including a plurality of light-emitting elements; a circuit element layer disposed between the substrate and the display element layer, including a plurality of signal wirings and a plurality of light-transmitting regions, wherein the plurality of signal wirings transmit signals for driving the light-emitting elements, and the plurality of light-transmitting regions are located between the signal wirings in a plane and transmit light; a first light-blocking layer disposed between the substrate and the circuit element layer and including a plurality of first openings; and a second light-blocking layer disposed on the first light-blocking layer and including a plurality of second openings. The second light-blocking layer may include second sub-light-blocking layers arranged spaced apart from each other along a first direction and respectively equipped with second openings. The first openings of the first light-blocking layer may overlap with the regions between the second sub-light-blocking layers.

[0025] The display device and portable terminal according to the present invention include a light-blocking layer capable of minimizing bending stress, thereby enabling easy bending. Attached Figure Description

[0026] Figure 1 This is a schematic plan view of a display device according to an embodiment of the present invention.

[0027] Figure 2a and Figure 2b This is a plan view illustrating a first light-blocking layer and a second light-blocking layer according to various embodiments of the present invention.

[0028] Figure 3 This is a plan view illustrating the arrangement structure of pixels, a first opening, a second opening, and a light sensor according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

[0030] Figure 5a It is based on Figure 2a and Figure 2b A cross-sectional view of line I-I'. Figure 5b and 5c It is based on when the display device is bent Figure 2a and Figure 2b A cross-sectional view of the I-I' line.

[0031] Figure 6 This is a plan view showing a first light-blocking layer and a second light-blocking layer according to another embodiment of the present invention.

[0032] Figure 7a It is based on Figure 6 A sectional view of line II-II'. Figure 7b and Figure 7c It is based on when the display device is bent Figure 6 A sectional view of line II-II'.

[0033] Figure 8 This is a plan view showing a first light-blocking layer and a second light-blocking layer according to another embodiment of the present invention.

[0034] Figure 9a It is based on Figure 8 A sectional view of line III-III'. Figure 9b and Figure 9c It is based on when the display device is bent Figure 8 A cross-sectional view along line III-III'.

[0035] Figure 10 This is a plan view showing a first light-blocking layer and a second light-blocking layer according to another embodiment of the present invention.

[0036] Figure 11a It is based on Figure 10 A cross-sectional view of line IV-IV'. Figure 11b and Figure 11c It is based on when the display device is bent Figure 10 A cross-sectional view of line IV-IV'.

[0037] Figure 12 This is a plan view showing a first light-blocking layer and a second light-blocking layer according to another embodiment of the present invention.

[0038] Figure 13a and Figure 13b This is a circuit diagram illustrating a unit light-emitting area of ​​a display device according to an embodiment of the present invention.

[0039] Figure 14a and Figure 14b This is a cross-sectional view of a display device according to various embodiments of the present invention.

[0040] Figure 15a This is a simplified perspective view of the front surface of a portable terminal according to one embodiment. Figure 15b It is shown in a simplified way. Figure 15a A three-dimensional view of the rear surface of a portable terminal.

[0041] Explanation of reference numerals in the attached figures

[0042] 10: Display device; 110: Display panel

[0043] AA: Display area; NA: Non-display area

[0044] PHS: Optical Sensor; PSL: Sensor Layer

[0045] PX: Pixel; PHL1: First light-blocking layer

[0046] SPHL1: First sub-blocking layer; PHL2: Second blocking layer

[0047] SPHL2: Second sub-blocking layer; PIH1: First opening.

[0048] PIH2: Second opening; SUB: Substrate

[0049] BPL: Circuit Component Layer; LDL: Display Component Layer

[0050] PTL: Protective Layer; ADL: Adhesive Layer

[0051] WIN: Windows 200: Portable Terminal Detailed Implementation

[0052] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings, and repeated descriptions of the same constituent elements are omitted.

[0053] Figure 1 This is a schematic plan view of a display device according to an embodiment of the present invention. Figure 2a and Figure 2b This is a plan view illustrating a first light-blocking layer and a second light-blocking layer according to various embodiments of the present invention. Figure 3This is a plan view illustrating the arrangement structure of pixels, a first opening, a second opening, and a light sensor according to an embodiment of the present invention. Figure 4 This is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

[0054] Reference Figures 1 to 4 According to an embodiment of the present invention, the display device 10 may include a substrate SUB, a first light-blocking layer PHL1 and a second light-blocking layer PHL2, a circuit element layer BPL and a display element layer LDL. Furthermore, the display device 10 may also include a sensor layer PSL.

[0055] The display device 10 can be configured in various shapes. For example, the display device 10 can be configured as a rectangular plate with two pairs of parallel sides. The display device 10 can display any visual information, such as text, video, photographs, two-dimensional or three-dimensional images, in the image display direction.

[0056] All or at least a portion of the display device 10 may be flexible. For example, the display device 10 may be flexible over the entire area. Alternatively, it may be flexible in a region corresponding to the flexible region, with the bending axis BA located within the flexible region. The display device 10 may be a flexible display device that is bendable relative to the bending axis BA.

[0057] The display device 10 may include a display area AA and a non-display area NA. The display area AA is an area provided with a plurality of pixels PX (or, may be named sub-pixels), and may be named the active area. In various embodiments, each of the pixels PX may include at least one light-emitting element LD. The light-emitting element LD may be an organic light-emitting diode or an ultra-small inorganic light-emitting diode with a size ranging from micrometers to nanometers; however, the present invention is not limited thereto. The display device 10 drives the pixels PX in response to image data input from an external source, thereby displaying an image in the display area AA.

[0058] The non-display area NA is the area surrounding the display area AA and can be named the non-active area. In various embodiments, the non-display area NA can generally refer to the remaining area on the substrate SUB other than the display area AA.

[0059] In various embodiments of the present invention, the display device 10 may include a sensor layer PSL disposed on the opposite side of the substrate SUB from the side where the first light-blocking layer PHL1 is disposed, and senses incident light. The sensor layer PSL may include a plurality of light sensors PHS, and the light sensors PHS overlap with the display area AA.

[0060] In one embodiment of the present invention, the optical sensor PHS can sense reflected light L from light emitted from a light source and reflected by the user's finger, and analyze the reflected light L to sense the user's fingerprint. Hereinafter, although the present invention will be described using the optical sensor PHS for fingerprint sensing as an example, in various embodiments, the optical sensor PHS can be used to perform various functions such as a touch sensor or a scanner.

[0061] Figure 2a and Figure 2b The illustration shows a first light-blocking layer and a second light-blocking layer according to various embodiments of the present invention.

[0062] In various embodiments of the present invention, the display device 10 may include a first light-blocking layer PHL1 and a second light-blocking layer PHL2. The first light-blocking layer PHL1 and the second light-blocking layer PHL2 may be disposed within the display panel 110, or disposed between the display panel 110 and the sensor layer PSL.

[0063] Reference Figure 2a and Figure 2b The first light-blocking layer PHL1 may include a light-blocking mask and a plurality of first openings PIH1 distributed on the light-blocking mask. Furthermore, the second light-blocking layer PHL2 may include a light-blocking mask and a plurality of second openings PIH2 distributed on the light-blocking mask.

[0064] Optical masks can be constructed using optically blocking and / or optically absorbing materials. For example, an optical mask can be constructed as an opaque metal layer with partial openings in the regions where the first openings PIH1 and the second openings PIH2 are arranged. However, the constituent materials of optical masks are not limited to metals; optical masks can be constructed using a variety of materials capable of blocking light transmission. For example, optical masks can also be constructed using currently known black matrix materials.

[0065] The first opening PIH1 and the second opening PIH2 can be pinholes distributed within the light-blocking mask. That is, the first opening PIH1 and the second opening PIH2, as empty spaces opened by removing at least one region of the light-blocking mask, can be through-holes penetrating the light-blocking mask. Alternatively, the first opening PIH1 and the second opening PIH2 can be transparent or translucent optical holes configured to selectively transmit only a portion of the incident light, or they can be light-transmitting holes.

[0066] Although Figure 2a and Figure 2bIn the illustration, the first opening PIH1 and the second opening PIH2 are depicted as circular, but the technical concept of the present invention is not limited to this. That is, in various embodiments, the first opening PIH1 and the second opening PIH2 can have various shapes such as rectangular, elliptical, and polygonal. However, the present invention is not limited to this, and the size, shape, number, resolution, and / or arrangement structure of the first opening PIH1 and the second opening PIH2 can be varied. Furthermore, the first opening PIH1 and the second opening PIH2 can be uniformly distributed or distributed in an irregular pattern on the light-blocking mask.

[0067] like Figure 2a As shown, the first opening PIH1 and the second opening PIH2 can have the same shape and size. Conversely, as... Figure 2b As shown, the size of the first opening PIH1 can be larger than the size of the second opening PIH2.

[0068] The first opening PIH1 and the second opening PIH2 can provide a path for light incident on the sensor layer PSL. The first light-blocking layer PHL1, including the first opening PIH1, and the second light-blocking layer PHL2, including the second opening PIH2, can selectively block light (hereinafter referred to as reflected light) L reflected by an object (e.g., a finger) that is in contact with the upper end of the display panel 110, or allow the reflected light L to pass through.

[0069] According to an embodiment, a portion of the reflected light L incident on the first light-blocking layer PHL1 can be blocked, while the remaining portion passes through the first opening PIH1 and reaches the photosensitive sensor PHS at the bottom of the first light-blocking layer PHL1. Similarly, a portion of the reflected light L incident on the second light-blocking layer PHL2 can be blocked, while the remaining portion passes through the second opening PIH2 and reaches the photosensitive sensor PHS.

[0070] The first opening PIH1 and the second opening PIH2 can be formed with appropriate size and spacing to prevent diffraction of incident light while sensing a clearer fingerprint pattern. For example, to prevent light diffraction, the width of the first opening PIH1 and the second opening PIH2 can be set to be approximately 10 times or more the wavelength of the incident light. The size of the first opening PIH1 and the size of the second opening PIH2 can be the same as or different from each other. Furthermore, the spacing between the first openings PIH1 and the spacing between the second openings PIH2 can be the same as or different from each other.

[0071] The spacing between the first openings PIH1 can be determined based on the distance between the first light-blocking layer PHL1 and the photosensitive sensor PHS, the wavelength of the incident light, and the required field of view (FOV) for the first opening PIH1. Similarly, the spacing between the second openings PIH2 can be determined based on the distance between the second light-blocking layer PHL2 and the photosensitive sensor PHS, the wavelength of the incident light, and the required field of view (FOV) for the second opening PIH2.

[0072] The first light-blocking layer PHL1 and the second light-blocking layer PHL2 can constitute an optical system for selectively transmitting only a portion of the reflected light L and blocking the remaining light. Such a first light-blocking layer PHL1 and the second light-blocking layer PHL2 can be used together with the aforementioned optical sensor PHS to form a fingerprint sensor. Furthermore, the first light-blocking layer PHL1 and the second light-blocking layer PHL2 can be integrally formed with the circuit element layer BPL of the display panel 110. In this case, the module thickness of the display device 10 equipped with a photosensitive fingerprint sensor can be reduced or minimized.

[0073] Figure 3 This is a plan view illustrating the arrangement structure of pixels, a first opening, a second opening, and a light sensor according to an embodiment of the present invention. Specifically, Figure 3 It is shown that the arrangement is in Figure 1 An embodiment of the relative size, resolution, and / or arrangement relationship of the pixels PX of the display area AA, the first opening PIH1, the second opening PIH2, and the light sensor PHS.

[0074] In various embodiments of the present invention, the light sensor PHS can be arranged within the display area AA. In this case, the light sensor PHS can overlap with at least a portion or all of the pixels PX disposed in the display area AA, or be arranged around the pixels PX. For example, at least a portion or all of the light sensor PHS can be disposed between the pixels PX.

[0075] In embodiments where the light sensor PHS is positioned adjacent to the pixel PX, the light sensor PHS can use a light-emitting element LD disposed in at least one pixel PX in the display area AA as a light source. In such embodiments, the light sensor PHS, together with the pixel PX in the display area AA (especially the light-emitting element LD disposed in the pixel PX), constitutes a photosensitive fingerprint sensor. Thus, by using the pixel PX as a light source to construct the fingerprint sensor-integrated display device 10 without an additional external light source, the module thickness of the display device 10 equipped with the photosensitive fingerprint sensor can be reduced, and manufacturing costs can be lowered.

[0076] Reference Figure 3 The light sensor PHS can be arranged in a number greater than the number of the first opening PIH1, the second opening PIH2, and the pixels PX. At least a portion of the light sensor PHS can overlap with the first opening PIH1 and the second opening PIH2, or with the pixels PX, but is not limited thereto. For example, a portion of the light sensor PHS can be arranged to overlap with the first opening PIH1, the second opening PIH2, and the pixels PX, while another portion can be arranged in the intervals between the pixels PX.

[0077] Reference Figure 3 The light sensor PHS can be densely arranged in the display area AA between pixels PX, between the first openings PIH1, and between the second openings PIH2 without requiring 1:1 alignment. Accordingly, regardless of whether the pixels PX are arranged with the first openings PIH1 and the second openings PIH2, the occurrence of moiré fringes can be prevented or minimized.

[0078] The arrangement of the pixel PX, the first opening PIH1, the second opening PIH2, and the light sensor PHS is not limited to... Figure 3 The embodiment shown. For example, the shape, arrangement, relative size, number, resolution and / or mutual arrangement relationship of the pixels PX arranged in the display area AA, the first opening PIH1, the second opening PIH2 and the light sensor PHS can be varied.

[0079] And, although Figure 3 The illustration shows an embodiment in which the first opening PIH1 and the second opening PIH2 and the photosensitive sensor PHS are arranged in a regular array in the display area AA, but the present invention is not limited thereto. That is, the first opening PIH1 and the second opening PIH2 and the photosensitive sensor PHS can be irregularly distributed in the display area AA, or distributed with different densities or arrangement structures according to different regions or intervals of the display area AA.

[0080] Reference Figure 4 According to an embodiment of the present invention, the display device 10 may include a display panel 110 and a sensor layer PSL disposed on one side of the display panel 110.

[0081] Display panel 110 can display images. The type of display panel 110 is not particularly limited as long as it is used for displaying images. Display panel 110 can be a self-emissive display panel such as an organic light-emitting display panel (OLED). Furthermore, display panel 110 can be a non-emissive display panel such as a liquid crystal display panel (LCD), an electro-phosphoretic display panel (EPD), or an electro-wetting display panel (EWD). When display panel 110 is constructed using a non-emissive display panel, display device 10 can be equipped with a backlight unit that supplies light to display panel 110.

[0082] The display panel 110 may include a substrate SUB, a first light-blocking layer PHL1 and a second light-blocking layer PHL2 disposed on one side (e.g., the upper side) of the substrate SUB, a circuit element layer BPL, a display element layer LDL, a protective layer PTL, an adhesive layer ADL, and a window WIN. Furthermore, the display device 10 may also include an additional adhesive layer (not shown, hereinafter referred to as the second adhesive layer) and an additional protective layer (not shown, hereinafter referred to as the second protective layer) sequentially disposed on the other side (e.g., the lower side) of the substrate SUB.

[0083] The substrate SUB serves as the base material for the display panel 110 and can be a substantially transparent, light-transmitting substrate. The substrate SUB can be a rigid substrate containing glass or tempered glass, or a flexible substrate made of plastic.

[0084] Flexible substrates can include film substrates and plastic substrates containing polymeric organic materials. For example, flexible substrates can include one of the following: polyethersulfone (PES), polyacrylate, polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate (PAR), polyimide (PI), polycarbonate (PC), triacetate cellulose (TAC), and cellulose acetate propionate (CAP). However, the material of the substrate SUB is not limited to these; the substrate SUB can be constructed from a variety of materials.

[0085] Reference Figure 1 The substrate SUB can be bent along the first direction DR1 with reference to a bending axis BA extending along the second direction DR2. All or part of the substrate SUB can be flexible. For example, within a region of the substrate SUB, only the region where the bending axis BA is located can be flexible.

[0086] The substrate SUB may include, for example Figure 1 The diagram shows a display area AA and a non-display area NA. Furthermore, the display area AA may include multiple pixel areas PXA arranged and / or formed with individual pixels PX.

[0087] The circuit element layer BPL can be arranged on the second light-blocking layer PHL2 and includes multiple circuit elements constituting the pixel circuit of the pixel PX, various power supplies for driving the pixel PX, and signal wiring for supplying signals.

[0088] In this case, the circuit element layer (BPL) may include a light-transmitting area that transmits light even when no circuit elements or signal wiring are arranged there. That is, the light-transmitting area is located on the plane between circuit elements, between circuit elements and signal wiring, or between signal wiring, and can represent an area that can transmit light even when no circuit elements or signal wiring are provided.

[0089] In various embodiments of the present invention, the circuit element layer (BPL) may include multiple conductive layers comprising circuit elements and signal wiring. Specifically, the circuit element layer (BPL) may be configured as a multilayer structure with stacked circuit elements and signal wiring.

[0090] At this point, the light-transmitting area can be represented as an area where no circuit elements or signal wiring are arranged in the various layers constituting the multi-layer structure, thus allowing light to pass through the multi-layer structure. The light-transmitting area can be included in multiple pixel areas (PXA).

[0091] Furthermore, the circuit element layer (BPL) may include at least one insulating film that electrically insulates the circuit elements and signal wiring.

[0092] Furthermore, the circuit element layer BPL may include a wiring section (not shown) arranged in the non-display area NA of the substrate SUB, and providing power and signals corresponding to the wiring connected to the pixel PX.

[0093] The display element layer (LDL) can be disposed on one side of the circuit element layer (BPL). The display element layer (LDL) may include multiple light-emitting elements (LDs) connected to the circuit element layer (BPL) via contact holes or the like. The light-emitting elements (LDs) may be organic light-emitting diodes or ultra-small light-emitting elements utilizing a structure that grows an inorganic crystal structure. In one embodiment, at least one of the multiple light-emitting elements (LDs) may be disposed in each pixel region (PXA).

[0094] A pixel PX may include circuit elements arranged in the circuit element layer BPL and at least one light-emitting element LD arranged in the display element layer LDL above the circuit element layer BPL. A detailed description of the structure of a pixel PX will follow.

[0095] The protective layer PTL can be arranged on top of the display element layer LDL in a manner that covers the display area AA. The protective layer PTL may include sealing components such as a thin film encapsulation (TFE) layer or a packaging substrate, and in addition to sealing components, protective films and the like may be attached.

[0096] The adhesive layer ADL is disposed between the protective layer PTL and the window WIN to bond the protective layer PTL and the window WIN. The adhesive layer ADL may include transparent adhesives such as optical clear adhesive (OCA), and may include a variety of other adhesive substances.

[0097] The window WIN, serving as a protective component disposed at the top of the module of the display device 10 including the display panel 110, can be a substantially transparent light-transmitting substrate. Such a window WIN can have a multilayer structure selected from glass substrates, plastic films, and plastic substrates. The window WIN can include rigid or flexible substrates, and there are no particular limitations on the constituent materials of the window WIN.

[0098] In various embodiments of the present invention, the display device 10 may further include a polarizing plate and / or a touch panel (touch electrode layer) not shown. For example, the display device 10 may also include a polarizing plate and / or a touch panel disposed between the protective layer PTL and the window WIN.

[0099] The second protective layer can be disposed on the other side of the substrate SUB. The second protective layer can be bonded to the substrate SUB via a second adhesive layer.

[0100] The second adhesive layer can firmly bond (or attach) the substrate SUB to the second protective layer. The second adhesive layer may include a transparent adhesive such as OCA. The second adhesive layer may also include a pressure-sensitive adhesive (PSA) that functions when pressure is applied for bonding to the adhesive surface. When the second adhesive layer includes a pressure-sensitive adhesive, it can be bonded to the adhesive surface at room temperature without additional heat treatment or UV treatment, simply by pressure.

[0101] The second protective layer can block the inflow of oxygen and moisture from the outside, and can be configured as a single layer or multiple layers. The second protective layer can be configured as a film, thereby further ensuring the flexibility of the display panel 110. The second protective layer can be bonded to the sensor layer PSL through another adhesive layer (not shown) including a transparent adhesive such as OCA.

[0102] The first light-blocking layer PHL1 and the second light-blocking layer PHL2 can be arranged between the display element layer LDL and the sensor layer PSL. For example, Figure 4 As shown, the first light-blocking layer PHL1 and the second light-blocking layer PHL2 can be disposed between the substrate SUB and the circuit element layer BPL. (Refer to...) Figure 2a and Figure 2b The first light-blocking layer PHL1 may include a first opening PIH1, and the second light-blocking layer PHL2 may include a second opening PIH2.

[0103] In various embodiments of the present invention, the first opening PIH1 can be configured to overlap with the light-transmitting area of ​​the circuit element layer BPL. Furthermore, the second opening PIH2 can be configured to overlap with the light-transmitting area of ​​the circuit element layer BPL. In this case, the first opening PIH1 and the second opening PIH2 can overlap with different light-transmitting areas. For example, in the light-transmitting areas, the first light-transmitting area (not shown) overlapping with the first opening PIH1 and the second light-transmitting area (not shown) overlapping with the second opening PIH2 can be located in different areas of the circuit element layer BPL.

[0104] Since the first opening PIH1 and the second opening PIH2 are configured to overlap with the light-transmitting area of ​​the circuit element layer BPL, the reflected light L emitted from the light source and reflected by the user's finger or the like can flow into the sensor layer PSL through the first opening PIH1 and the second opening PIH2.

[0105] Furthermore, in order to reduce the loss of reflected light L required for fingerprint sensing, the display panel 110 can be configured such that light from the first opening PIH1 and the second opening PIH2 can be transmitted within a predetermined angular range of the field of view (or, also called the "field of view") (FOV).

[0106] The sensor layer PSL can be arranged to overlap with the display panel 110 at least in the display area AA. The spacing between the photosensitive sensors PHS included in the sensor layer PSL can be densely set such that reflected light L reflected from the observed object (e.g., a specific area of ​​the finger such as a fingerprint area) is incident on at least two adjacent photosensitive sensors PHS.

[0107] The optical sensor PHS in the sensor layer PSL can output a sensing signal as an electrical signal corresponding to the reflected light L received through the first opening PIH1 and the second opening PIH2. The reflected light L received by each optical sensor PHS can have different optical characteristics (for example, frequency, wavelength, magnitude, etc.) depending on whether it is a valley or a ridge formed on the user's fingerprint. Therefore, each optical sensor PHS can output a sensing signal with different electrical characteristics corresponding to the optical characteristics of the reflected light L. The sensing signals output by the optical sensor PHS can be converted into image data for the user's fingerprint recognition.

[0108] A simplified description of the fingerprint sensing method of the display device 10 according to an embodiment of the present invention is as follows. During the fingerprint sensing period when the light sensor PHS is activated, when the user's finger (e.g., the fingerprint area) touches or approaches the display area AA, the pixels PX of the display area AA (in particular, the light-emitting element LD provided on the pixels PX) can emit light. For example, during the fingerprint sensing period, all the pixels PX of the display area AA can emit light simultaneously or sequentially. Alternatively, only a portion of the pixels PX of the display area AA emit light at a predetermined interval, or only a portion of the pixels PX that emit light of a specific color (e.g., short-wavelength light such as blue light) can selectively emit light.

[0109] A portion of the light emitted from pixel PX can be reflected by the user's finger and passes through the first opening PIH1 and the second opening PIH2 before entering the light sensor PHS. At this point, the user's fingerprint pattern can be detected based on the difference in the amount and / or waveform of the reflected light L reflected by the ridges and valleys of the fingerprint, respectively.

[0110] Furthermore, although the display device 10 also uses the light-emitting element LD of the pixel PX as the light source for the fingerprint sensor, the present invention is not limited thereto. For example, the display device 10 according to another embodiment of the present invention may also be equipped with an additional light source for fingerprint sensing.

[0111] A display device 10 according to an embodiment of the present invention may include a driving circuit for driving a display panel 110. For example, the driving circuit may output a data signal corresponding to image data to the display panel 110, or output a driving signal for a light sensor PHS, and receive a sensing signal received from the light sensor PHS. The driving circuit that receives the sensing signal may use the sensing signal to detect the user's fingerprint pattern.

[0112] In various embodiments of the present invention, the driving circuit may include a panel driving unit (not shown) and a fingerprint detection unit (not shown). The panel driving unit may sequentially scan the pixels PX of the display area AA and supply data signals corresponding to the image data to the pixels PX. In this way, the display panel 110 may display an image corresponding to the image data.

[0113] In one embodiment of the present invention, the panel driving unit can supply a driving signal for fingerprint sensing to the pixel PX. Such a driving signal can be provided to operate as a light source for the light sensor PHS, causing the pixel PX to emit light.

[0114] The fingerprint detection unit can transmit the drive signal used to drive the optical sensor PHS to the optical sensor PHS, and detect the user's fingerprint based on the sensing signal received from the optical sensor PHS.

[0115] Figure 5a It is based on Figure 2a and Figure 2b A cross-sectional view of line I-I'. Figure 5b and 5c It is based on when the display device is bent Figure 2a and Figure 2b A cross-sectional view of line I-I'. Specifically, Figure 5b The diagram shows a case where the display device 10 is bent so that the substrate SUB is located on the inside. Figure 5c The diagram shows a case where the display device 10 is bent so that the insulating layer INS is on the inside.

[0116] Reference Figure 2a and Figure 2b , Figures 4 to 5c According to an embodiment of the present invention, the display device 10 may include a substrate SUB, a first light-blocking layer PHL1, a second light-blocking layer PHL2 including second sub-light-blocking layers SPHL2-1 and SPHL2-2, a circuit element layer BPL, and a display element layer LDL.

[0117] Reference Figure 2a and Figure 2b , Figures 5a to 5c The first light-blocking layer PHL1 can be disposed between the substrate SUB and the circuit element layer BPL, and the second light-blocking layer PHL2 can be disposed between the first light-blocking layer PHL1 and the circuit element layer BPL. Specifically, the first light-blocking layer PHL1 can be disposed on one side of the substrate SUB, and the insulating layer INS can be disposed on one side of the substrate SUB on which the first light-blocking layer PHL1 is disposed.

[0118] The insulating layer INS can include one of the following insulating materials: inorganic insulating material or organic insulating material. A second light-blocking layer PHL2 can be disposed on the insulating layer INS. That is, the first light-blocking layer PHL1 and the second light-blocking layer PHL2 can be disposed on different layers on the substrate SUB.

[0119] In one embodiment of the present invention, the second light-blocking layer PHL2 may include second sub-light-blocking layers SPHL2-1 and SPHL2-2, which are arranged spaced apart from each other along the first direction DR1 and respectively equipped with second openings PIH2. In this case, the first opening PIH1 of the first light-blocking layer PHL1 may overlap with the area between the second sub-light-blocking layers SPHL2-1 and SPHL2-2. Furthermore, the second opening PIH2 of each of the second sub-light-blocking layers SPHL2-1 and SPHL2-2 may be configured not to overlap with the first light-blocking layer PHL1.

[0120] Reference Figure 2a and Figure 2b , Figures 5a to 5c The first opening PIH1 of the first light-blocking layer PHL1 can be located in the region separated from each other by the second sub-light-blocking layers SPHL2-1 and SPHL2-2. The second openings PIH2 of the second-1st and second-2nd sub-light-blocking layers SPHL2-1 and SPHL2-2 can be arranged so as not to overlap with the first light-blocking layer PHL1. Accordingly, light can pass through the region between the second sub-light-blocking layers SPHL2-1 and SPHL2-2 and the first and second openings PIH1 and PIH2. For example, light emitted from a light source can pass through the region between the second sub-light-blocking layers SPHL2-1 and SPHL2-2 and the first and second openings PIH1 and PIH2 after being reflected by the user's finger.

[0121] In one embodiment of the present invention, a portion of the first light-blocking layer PHL1 may overlap with a portion of each of the second sub-light-blocking layers SPHL2-1 and SPHL2-2. For example... Figures 5a to 5c As shown, one end of the first light-blocking layer PHL1 can overlap with one end of the second-1st sub-light-blocking layer SPHL2-1, and the other end of the first light-blocking layer PHL1 can overlap with one end of the second-2nd sub-light-blocking layer SPHL2-2.

[0122] Because a portion of the first light-blocking layer PHL1 overlaps with a portion of each of the second sub-light-blocking layers SPHL2-1 and SPHL2-2, light can pass through only the first opening PIH1 and the second opening PIH2. For example, a portion of the reflected light L reflected by the user's finger can pass through the first opening PIH1 and the second opening PIH2, while the remaining portion can be blocked by the light-blocking mask of the first light-blocking layer PHL1 and the second light-blocking layer PHL2. Furthermore, the area of ​​overlap between a portion of the first light-blocking layer PHL1 and a portion of each of the second sub-light-blocking layers SPHL2-1 and SPHL2-2 can be set such that when the display device 10 is bent, the reflected light L can pass through only the first opening PIH1 and the second opening PIH2.

[0123] In one embodiment of the present invention, the second sub-light-blocking layers SPHL2-1 and SPHL2-2 adjacent to the bending axis BA can be placed between and separated from the bending axis BA. That is, the second light-blocking layer PHL2, including the second sub-light-blocking layers SPHL2-1 and SPHL2-2, may not overlap with the bending axis BA.

[0124] like Figure 5b and Figure 5c As shown, since the second sub-light-blocking layers SPHL2-1 and SPHL2-2 are configured not to overlap with the bending axis BA, the bending stress formed in the second light-blocking layer PHL2 when the display device 10 is bent can be minimized. Accordingly, even when the display device 10 is repeatedly bent, deformation or damage to the second light-blocking layer PHL2 can be prevented.

[0125] In one embodiment of the present invention, the first opening PIH1 of the first light-blocking layer PHL1 can be arranged to overlap with the bending axis BA. For example... Figure 5aAs shown, since the first light-blocking layer PHL1 overlaps with the bending axis BA, bending stress may form in the first light-blocking layer PHL1 when the display device 10 is bent. However, in one embodiment of the present invention, the first opening PIH1 is configured to overlap with the bending axis BA, thereby minimizing the bending stress formed in the first light-blocking layer PHL1. Specifically, when the first opening PIH1 overlaps with the region of the bending axis BA where the maximum bending stress is formed when the display device 10 is bent, the area in contact between the bending axis BA region and the first light-blocking layer PHL1 can be minimized. Accordingly, even when the display device 10 is repeatedly bent, deformation and damage to the first light-blocking layer PHL1 can be prevented.

[0126] Figure 6 This is a plan view illustrating a first light-blocking layer and a second light-blocking layer according to another embodiment of the present invention. Figure 7a It is based on Figure 6 A sectional view of line II-II'. Figure 7b and Figure 7c It is based on when the display device is bent Figure 6 A cross-sectional view along line II-II'. Specifically, Figure 7b The diagram shows a case where the display device 10 is bent so that the substrate SUB is located on the inside. Figure 7c The diagram shows a case where the display device 10 is bent so that the insulating layer INS is on the inside.

[0127] In this embodiment, to avoid repetition, the description will primarily focus on configurations not mentioned in the aforementioned embodiment. In this embodiment, unless otherwise specified, reference is made to the aforementioned embodiment; the same reference numerals denote the same constituent elements, and similar reference numerals denote similar constituent elements. It should be noted that this also applies to the embodiments described below.

[0128] Reference Figure 4 , Figures 6 to 7c According to an embodiment of the present invention, the display device 10 may include a substrate SUB, a first light-blocking layer PHL1 including first sub-light-blocking layers SPHL1-1 to SPHL1-3, a second light-blocking layer PHL2 including second sub-light-blocking layers SPHL2-1 to SPHL2-4, a circuit element layer BPL, and a display element layer LDL.

[0129] The first light-blocking layer PHL1 may include first sub-light-blocking layers SPHL1-1 to SPHL1-3 arranged spaced apart from each other along the first direction DR1 and respectively equipped with a first opening PIH1.

[0130] Although Figures 6 to 7cThe diagram illustrates a case where three first sub-light blocking layers SPHL1-1 to SPHL1-3 and four second sub-light blocking layers SPHL2-1 to SPHL2-4 are provided on a substrate SUB. However, the number of first sub-light blocking layers SPHL1 and second sub-light blocking layers SPHL2 provided on the substrate SUB is not limited to this. For example, four first sub-light blocking layers SPHL1 and five second sub-light blocking layers SPHL2 can be provided on the substrate SUB.

[0131] In one embodiment of the present invention, at least a portion of one of the first sub-blocking layers SPHL1-1 to SPHL1-3 and at least a portion of one of the second sub-blocking layers SPHL2-1 to SPHL2-4 may overlap each other. Specifically, a portion of the first sub-blocking layer SPHL1 that is adjacent to each other may overlap with a portion of the second sub-blocking layer SPHL2.

[0132] like Figures 7a to 7c As shown, the second light-blocking layer PHL2 may include 2-1 sub-light-blocking layers SPHL2-1 to 2-4 sub-light-blocking layers SPHL2-4 spaced apart from each other along the first direction DR1. The first light-blocking layer PHL1 may include 1-1 sub-light-blocking layers SPHL1-1 to 1-3 sub-light-blocking layers SPHL1-3 spaced apart from each other along the first direction DR1.

[0133] At this point, one end of the 2-1 sub-opaque layer SPHL2-1 can overlap with one end of the 1-1 sub-opaque layer SPHL1-1, and the other end of the 1-1 sub-opaque layer SPHL1-1 overlaps with one end of the 2-2 sub-opaque layer SPHL2-2. The other end of the 2-2 sub-opaque layer SPHL2-2 can overlap with one end of the 1-2 sub-opaque layer SPHL1-2, and the other end of the 1-2 sub-opaque layer SPHL1-2 overlaps with one end of the 2-3 sub-opaque layer SPHL2-3. The other end of the 2-3 sub-opaque layer SPHL2-3 can overlap with one end of the 1-3 sub-opaque layer SPHL1-3, and the other end of the 1-3 sub-opaque layer SPHL1-3 overlaps with one end of the 2-4 sub-opaque layer SPHL2-4.

[0134] By setting a portion of the first sub-blocking layer SPHL1 that is adjacent to each other and a portion of the second sub-blocking layer SPHL2 that overlaps, the reflected light L can selectively transmit through the first opening PIH1 and the second opening PIH2.

[0135] In one embodiment of the present invention, the first opening PIH1 of each of the first sub-light blocking layers SPHL1-1 to SPHL1-3 may be configured not to overlap with the second sub-light blocking layers SPHL2-1 to SPHL2-4, and the second opening PIH2 of each of the second sub-light blocking layers SPHL2-1 to SPHL2-4 may be configured not to overlap with the first sub-light blocking layers SPHL1-1 to SPHL1-3.

[0136] Reference Figures 6 to 7c The regions separated by the 2-1st sub-opaque layer SPHL2-1 and the 2-2nd sub-opaque layer SPHL2-2 can overlap with the first opening PIH1 of the 1-1st sub-opaque layer SPHL1-1. The regions separated by the 2-2nd sub-opaque layer SPHL2-2 and the 2-3rd sub-opaque layer SPHL2-3 can overlap with the first opening PIH1 of the 1-2nd sub-opaque layer SPHL1-2. The regions separated by the 2-3rd sub-opaque layer SPHL2-3 and the 2-4th sub-opaque layer SPHL2-4 can overlap with the first opening PIH1 of the 1-3rd sub-opaque layer SPHL1-3.

[0137] Furthermore, the regions separated by the first-1 sub-opaque layer SPHL1-1 and the first-2 sub-opaque layer SPHL1-2 can overlap with the second opening PIH2 of the second-2 sub-opaque layer SPHL2-2. The regions separated by the first-2 sub-opaque layer SPHL1-2 and the first-3 sub-opaque layer SPHL1-3 can overlap with the second opening PIH2 of the second-3 sub-opaque layer SPHL2-3.

[0138] Accordingly, light can pass through the region between the second sub-light-blocking layers SPHL2-1 and SPHL2-4 and the first opening PIH1, and can also pass through the region between the first sub-light-blocking layers SPHL1-1 and SPHL1-3 and the second opening PIH2. For example, light emitted from the light source can, after being reflected by the user's finger, pass through the region between the second sub-light-blocking layers SPHL2-1 and SPHL2-4 and the first opening PIH1, as well as the region between the first sub-light-blocking layers SPHL1-1 and SPHL1-3 and the second opening PIH2.

[0139] In one embodiment of the present invention, the second sub-blocking layers SPHL2-1 to SPHL2-4 may not overlap with the bending axis BA. For example... Figures 6 to 7c As shown, the second-2nd sub-opaque layer SPHL2-2 and the second-3rd sub-opaque layer SPHL2-3 can be separated by placing the bending axis BA between them. Furthermore, the second-2nd sub-opaque layer SPHL2-2 can be separated from the second-1st sub-opaque layer SPHL2-1 along the first direction DR1, and the second-3rd sub-opaque layer SPHL2-3 can be separated from the second-4th sub-opaque layer SPHL2-4 along the first direction DR1.

[0140] By separating the second-2 sub-light-blocking layers SPHL2-2 and SPHL2-3 adjacent to the bending axis BA from the second-1 sub-light-blocking layers SPHL2-1 and SPHL2-4 distant from the bending axis BA, the bending stress formed in the second-2 sub-light-blocking layers SPHL2-2 and SPHL2-3 when the display device 10 is bent can be effectively suppressed from being transmitted to the second-1 sub-light-blocking layers SPHL2-1 and SPHL2-4 when the display device 10 is bent. Accordingly, the bending stress formed in the second light-blocking layer PHL2 can be further eliminated when the display device 10 is bent.

[0141] In one embodiment of the present invention, the first opening PIH1 of the first sub-blocking layer SPHL1 closest to the bending axis BA can overlap with the bending axis BA. Figures 6 to 7c As shown, the first opening PIH1 of the first-second sub-blocking layer SPHL1-2 can overlap with the bending axis BA. Accordingly, the bending stress formed by the first-second sub-blocking layer SPHL1-2 adjacent to the bending axis BA can be minimized.

[0142] By separating the first-2 sub-light blocking layer SPHL1-2 from the first-1 sub-light blocking layer SPHL1-1 and the first-3 sub-light blocking layer SPHL1-3, the bending stress formed in the first-2 sub-light blocking layer SPHL1-2 when the display device 10 is bent can be prevented from being transmitted to the first-1 sub-light blocking layer SPHL1-1 and the first-3 sub-light blocking layer SPHL1-3.

[0143] Figure 8 This is a plan view showing the first light-blocking layer and the second light-blocking layer according to another embodiment of the present invention. Figure 9a It is based on Figure 8 A sectional view of line III-III'. Figure 9b and Figure 9c It is based on when the display device is bent Figure 8 A cross-sectional view along line III-III'. Specifically, Figure 9b The diagram shows a case where the display device 10 is bent so that the substrate SUB is located on the inside. Figure 9c The diagram shows a case where the display device 10 is bent so that the insulating layer INS is on the inside.

[0144] Reference Figure 4 , Figures 8 to 9c According to an embodiment of the present invention, the display device 10 may include a substrate SUB, a first light-blocking layer PHL1 including first sub-light-blocking layers SPHL1-1 to SPHL1-2, a second light-blocking layer PHL2, a circuit element layer BPL, and a display element layer LDL.

[0145] Although Figures 8 to 9c The diagram illustrates a case where a first sub-light blocking layer SPHL1-1, a first sub-light blocking layer SPHL1-2, and a second sub-light blocking layer SPHL2-1 to a second sub-light blocking layer SPHL2-3 are disposed on a substrate SUB. However, the configuration of the first light blocking layer PHL1 and the second light blocking layer PHL2 is not limited to this. For example, with... Figures 8 to 9c Unlike other light-blocking layers, the second light-blocking layer PHL2 may only include the second-second sub-light-blocking layer SPHL2-2 adjacent to the bending axis BA. The first-first sub-light-blocking layer SPHL1-1 may be expanded to overlap with the area where the second-first sub-light-blocking layer SPHL2-1 is provided, and the first-second sub-light-blocking layer SPHL1-2 may be expanded to overlap with the area where the second-third sub-light-blocking layer SPHL2-3 is provided.

[0146] And, although in Figures 8 to 9c The diagram illustrates a scenario where two first sub-light blocking layers SPHL1 and three second sub-light blocking layers SPHL2 are disposed on a substrate SUB. However, the number of first sub-light blocking layers SPHL1 and second sub-light blocking layers SPHL2 disposed on the substrate SUB is not limited to this. For example, three first sub-light blocking layers SPHL1 and four second sub-light blocking layers SPHL2 can be disposed on the substrate SUB.

[0147] In one embodiment of the present invention, the first light-blocking layer PHL1 may include first sub-light-blocking layers SPHL1-1 and SPHL1-2, which are spaced apart from each other along the first direction DR1 and respectively equipped with a first opening PIH1. In this case, the second opening PIH2 of the second light-blocking layer PHL2 may overlap with the area between the first sub-light-blocking layers SPHL1-1 and SPHL1-2. Furthermore, the second light-blocking layer PHL2 may include second sub-light-blocking layers SPHL2-1 to SPHL2-3, which are spaced apart from each other along the first direction DR1 and respectively equipped with a second opening PIH2.

[0148] The following describes an embodiment based on the second light-blocking layer PHL2, which includes the second sub-light-blocking layers SPHL2-1 to SPHL2-3.

[0149] In one embodiment of the present invention, the first sub-light-blocking layers SPHL1-1 and SPHL1-2 adjacent to the bending axis BA can be separated from the bending axis BA by placing the bending axis BA between them. When the display device 10 is bent, the bending stress increases as the radius of curvature decreases. For example, when the first light-blocking layer PHL1 is configured to overlap with the bending axis BA on the substrate SUB, and the second light-blocking layer PHL2 is configured to overlap with the bending axis BA on the insulating layer INS, when the display device 10 is bent, a greater bending stress is formed in the first light-blocking layer PHL1 than in the second light-blocking layer PHL2.

[0150] In one embodiment of the present invention, by setting the first sub-light blocking layers SPHL1-1 and SPHL1-2 included in the first light blocking layer PHL1 to be separated by placing the bending axis BA therebetween, the bending stress formed in the first light blocking layer PHL1 when the display device 10 is bent can be eliminated.

[0151] like Figures 8 to 9c As shown, the second opening PIH2 of each of the second sub-blocking layers SPHL2-1 to SPHL2-3 can be located in the region separated from the first sub-blocking layers SPHL1-1 and SPHL1-2. Specifically, the second opening PIH2 of the second-2nd sub-blocking layer SPHL2-2 can be located in the region separated from the first-1st sub-blocking layer SPHL1-1 and the first-2nd sub-blocking layer SPHL1-2.

[0152] In one embodiment of the invention, a portion of the second opening PIH2 of the second light-blocking layer PHL2 can be arranged to overlap with the bending axis BA. Figures 8 to 9c Unlike the previous example, a portion of the second opening PIH2 in the second sub-blocking layer SPHL2-2 adjacent to the bending axis BA can be configured to overlap with the bending axis BA.

[0153] In one embodiment of the present invention, at least a portion of one of the first sub-light blocking layers SPHL1-1 and SPHL1-2 may overlap with at least a portion of one of the second sub-light blocking layers SPHL2-1 to SPHL2-3. Specifically, a portion of the first sub-light blocking layer SPHL1 that is adjacent to each other may overlap with a portion of the second sub-light blocking layer SPHL2.

[0154] like Figures 9a to 9c As shown, one end of the 2-1 sub-opaque layer SPHL2-1 can overlap with one end of the 1-1 sub-opaque layer SPHL1-1, and the other end of the 1-1 sub-opaque layer SPHL1-1 overlaps with one end of the 2-2 sub-opaque layer SPHL2-2. The other end of the 2-2 sub-opaque layer SPHL2-2 can overlap with one end of the 1-2 sub-opaque layer SPHL1-2, and the other end of the 1-2 sub-opaque layer SPHL1-2 overlaps with one end of the 2-3 sub-opaque layer SPHL2-3.

[0155] In one embodiment of the present invention, the first opening PIH1 of each of the first sub-light blocking layers SPHL1-1 and SPHL1-2 may be configured not to overlap with the second sub-light blocking layers SPHL2-1 to SPHL2-3, and the second opening PIH2 of each of the second sub-light blocking layers SPHL2-1 to SPHL2-3 may be configured not to overlap with the first sub-light blocking layers SPHL1-1 and SPHL1-2.

[0156] Reference Figures 8 to 9c The regions separated by the second-1st sub-opaque layer SPHL2-1 and the second-2nd sub-opaque layer SPHL2-2 can overlap with the first opening PIH1 of the first-1st sub-opaque layer SPHL1-1. The regions separated by the second-2nd sub-opaque layer SPHL2-2 and the second-3rd sub-opaque layer SPHL2-3 can overlap with the first opening PIH1 of the first-2nd sub-opaque layer SPHL1-2. Furthermore, the regions separated by the first-1st sub-opaque layer SPHL1-1 and the first-2nd sub-opaque layer SPHL1-2 can overlap with the second opening PIH2 of the second-2nd sub-opaque layer SPHL2-2.

[0157] In one embodiment of the invention, the first sub-light blocking layer SPHL1 may not overlap with the bending axis BA. Furthermore, the first sub-light blocking layers SPHL1 are spaced apart from each other along the first direction DR1, thereby preventing the bending stress formed in the first sub-light blocking layer SPHL1 closest to the bending axis BA from being transmitted to the first sub-light blocking layer SPHL1 away from the bending axis BA.

[0158] Figure 10 This is a plan view showing the first light-blocking layer and the second light-blocking layer according to another embodiment of the present invention. Figure 11a It is based on Figure 10 A cross-sectional view of line IV-IV'. Figure 11b and Figure 11c It is based on when the display device is bent Figure 10 A cross-sectional view along line IV-IV'. Specifically, Figure 11b The diagram shows a case where the display device 10 is bent so that the substrate SUB is located on the inside. Figure 11c The diagram shows a case where the display device 10 is bent so that the insulating layer INS is on the inside.

[0159] Reference Figure 4 and Figure 10 According to an embodiment of the present invention, the display device 10 may include a substrate SUB, a first light-blocking layer PHL1, a second light-blocking layer PHL2, a circuit element layer BPL, and a display element layer LDL.

[0160] At least one portion of the first light-blocking layer PHL1 and the second light-blocking layer PHL2 may overlap with the bending axis BA. For example, a portion of the first light-blocking layer PHL1 may overlap with the bending axis BA, or a portion of the second light-blocking layer PHL2 may overlap with the bending axis BA, or a portion of the first light-blocking layer PHL1 and a portion of the second light-blocking layer PHL2 may overlap with the bending axis BA.

[0161] Reference Figures 10 to 11cA portion of the first light-blocking layer PHL1 and the second light-blocking layer PHL2 may overlap with the bending axis BA. When the display device 10 is bent relative to the bending axis BA, the substrate SUB and the insulating layer INS may include flat regions FP1 and FP2 and a bent region BP. In this case, as... Figure 11b As shown, the first light-blocking layer PHL1 can be arranged on the substrate SUB such that when the display device 10 is bent, a portion of the first light-blocking layer PHL1 will not exceed the bent region BP and will reach the flat region FP2. Furthermore, the second light-blocking layer PHL2 can be arranged on the substrate SUB such that when the display device 10 is bent, a portion of the second light-blocking layer PHL2 will not exceed the bent region BP and will reach the flat region FP1. Accordingly, the bent regions of the first light-blocking layer PHL1 and the second light-blocking layer PHL2 can be reduced, thereby reducing the bending stress formed in the first light-blocking layer PHL1 and the second light-blocking layer PHL2.

[0162] Figure 12 This is a plan view showing a first light-blocking layer and a second light-blocking layer according to another embodiment of the present invention.

[0163] Reference Figure 4 and Figure 12 According to an embodiment of the present invention, the display device 10 may include a substrate SUB, a first light-blocking layer PHL1 including first sub-light-blocking layers SPHL1-1 to SPHL1-6, a second light-blocking layer PHL2 including second sub-light-blocking layers SPHL2-1 to SPHL2-6, a circuit element layer BPL, and a display element layer LDL.

[0164] like Figure 12 As shown, the first light-blocking layer PHL1 may include 1-1 sub-light-blocking layers SPHL1-1 to 1-6 sub-light-blocking layers SPHL1-6 spaced apart along the first direction DR1. The second light-blocking layer PHL2 may include 2-1 sub-light-blocking layers SPHL2-1 to 2-6 sub-light-blocking layers SPHL2-6 spaced apart along the first direction DR1. The 1-1 sub-light-blocking layers SPHL1-1 to 1-6 sub-light-blocking layers SPHL1-6 may be disposed on a substrate SUB, and an insulating layer INS is disposed on the substrate SUB on which the 1-1 sub-light-blocking layers SPHL1-1 to 1-6 sub-light-blocking layers SPHL1-6 are formed. The 2-1 sub-light-blocking layers SPHL2-1 to 2-6 sub-light-blocking layers SPHL2-6 may be disposed on the insulating layer INS. Furthermore, a portion of the first sub-light-blocking layer SPHL1 adjacent to each other may overlap with a portion of the second sub-light-blocking layer SPHL2.

[0165] In one embodiment of the present invention, the first-1 sub-opaque layers SPHL1-1 to the first-6 sub-opaque layers SPHL1-6 and the second-1 sub-opaque layers SPHL2-1 to the second-6 sub-opaque layers SPHL2-6 can extend in a zigzag pattern along the second direction DR2. For example... Figure 12 As shown, the first sub-light blocking layer SPHL1-1 to SPHL1-6 and the second sub-light blocking layer SPHL2-1 to SPHL2-6 have a zigzag shape extending along the second direction DR2, thereby eliminating bending stress formed when the display device 10 is bent.

[0166] Figure 13a and Figure 13b This is a circuit diagram illustrating a unit light-emitting area of ​​a display device according to an embodiment of the present invention.

[0167] Figure 13a and Figure 13b The illustration shows an example of pixels constituting an active-matrix light-emitting display panel. In one embodiment of the invention, the unit light-emitting area may be a pixel area having a sub-pixel.

[0168] Reference Figure 13a Subpixel SP may include one or more light-emitting elements LD and a pixel driving circuit 144 connected thereto and driving the light-emitting elements LD.

[0169] The first electrode (e.g., anode electrode) of the light-emitting element LD is connected to the first driving power supply VDD via the pixel driving circuit 144, and the second electrode (e.g., cathode electrode) of the light-emitting element LD is connected to the second driving power supply VSS.

[0170] The first driving power supply VDD and the second driving power supply VSS may have different potentials. As an example, the second driving power supply VSS may have a potential that is lower than or equal to the threshold voltage of the light-emitting element LD than the potential of the first driving power supply VDD.

[0171] Each of the light-emitting elements (LDs) can emit light with a brightness corresponding to the driving current controlled by the pixel driving circuit 144.

[0172] In addition, Figure 13a The present invention discloses an embodiment in which the sub-pixel SP includes only one light-emitting element LD; however, the present invention is not limited thereto. For example, the sub-pixel SP may include multiple light-emitting elements LD connected in parallel with each other.

[0173] According to one embodiment of the present invention, the pixel driving circuit 144 may include a first transistor T1, a second transistor T2, and a storage capacitor Cst. However, the structure of the pixel driving circuit 144 is not limited to... Figure 13a The example shown.

[0174] The first electrode of the first transistor (driving transistor) T1 is connected to the first driving power supply VDD, and the second electrode is electrically connected to the first electrode of each of the light-emitting elements LD. The gate electrode of the first transistor T1 is connected to the first node N1. Thus, the first transistor T1 controls the amount of driving current supplied to the light-emitting element LD according to the voltage of the first node N1.

[0175] The first electrode of the second transistor (switching transistor) T2 is connected to the data line DL, and the second electrode is connected to the first node N1. Here, the first and second electrodes of the second transistor T2 are different electrodes from each other; for example, if the first electrode is the source electrode, then the second electrode can be the drain electrode. Furthermore, the gate electrode of the second transistor T2 is connected to the scan line SL.

[0176] The second transistor T2 can be turned on when a scan signal, providing a voltage (e.g., a low voltage) sufficient to turn on the second transistor T2, is supplied from the scan line SL, thereby electrically connecting the data line DL to the first node N1. At this time, a data signal for the corresponding frame is supplied to the data line DL, thereby transmitting the data signal to the first node N1. The data signal transmitted to the first node N1 is used to charge the storage capacitor Cst.

[0177] One electrode of the storage capacitor Cst is connected to the first driving power supply VDD, and the other electrode is connected to the first node N1. The storage capacitor Cst is charged with a voltage corresponding to the data signal supplied to the first node N1, and this charged voltage is maintained until the next frame of data signal is supplied.

[0178] For convenience, Figure 13a The diagram illustrates the relatively simple pixel driving circuit 144, which includes a second transistor T2 for transmitting the data signal to the sub-pixel SP, a storage capacitor Cst for storing the data signal, and a first transistor T1 for supplying a driving current corresponding to the data signal to the light-emitting element LD.

[0179] However, the present invention is not limited thereto, and the structure of the pixel driving circuit 144 can be modified in various ways. As an example, the pixel driving circuit 144 may also be supplemented with at least one transistor element, such as a transistor element for compensating the threshold voltage of the first transistor T1, a transistor element for initializing the first node N1, and / or a transistor element for controlling the emission time of the light-emitting element LD, or other circuit elements such as a boost capacitor for increasing the voltage of the first node N1.

[0180] And, although in Figure 13a In the illustration, all transistors included in the pixel driving circuit 144 (e.g., the first transistor T1 and the second transistor T2) are shown as P-type transistors, but the present invention is not limited thereto. That is, at least one of the first transistor T1 and the second transistor T2 included in the pixel driving circuit 144 may also be replaced with an N-type transistor.

[0181] Reference Figure 13b According to one embodiment of the present invention, the first transistor T1 and the second transistor T2 can be implemented by N-type transistors. Besides the change in the connection positions of some components due to the change in transistor type, Figure 13b The configuration or operation of the pixel driving circuit 144 shown is similar to Figure 13a The pixel driving circuit 144 shown is similar in configuration or operation. Therefore, its detailed description is omitted.

[0182] Figure 14a and Figure 14b This is a cross-sectional view of a display device according to various embodiments of the present invention.

[0183] Reference Figure 14a and Figure 14b The display device 10 may include a substrate SUB, a first light-blocking layer PHL1, an insulating layer INS, a second light-blocking layer PHL2, a circuit element layer BPL, and a display element layer LDL.

[0184] The circuit element layer BPL may include a buffer layer BFL, a first transistor T1, a second transistor T2, and a power line PL.

[0185] A buffer layer BFL can be disposed on the second light-blocking layer PHL2. The buffer layer BFL prevents impurities from diffusing to the first transistor T1 and the second transistor T2. The buffer layer BFL can be a single layer, or it can be multiple layers (two or more). When the buffer layer BFL is multilayered, each layer can be formed using the same material or different materials. Depending on the material and process conditions of the substrate SUB, the buffer layer BFL can also be omitted.

[0186] The first transistor T1 can be a driving transistor electrically connected to the light-emitting element LD to drive the light-emitting element LD. The second transistor T2 can be a switching transistor electrically connected to the first transistor T1 to switch the first transistor T1 on and off.

[0187] Each of the first transistor T1 and the second transistor T2 may include a semiconductor layer SCL, a gate electrode GE, a source electrode SE, and a drain electrode DE.

[0188] The semiconductor layer SCL can be disposed on the buffer layer BFL. The semiconductor layer SCL may include a source region and a drain region that are respectively in contact with the corresponding source electrode SE and drain electrode DE. The region between the source region and the drain region can be a channel region. The semiconductor layer SCL can be a semiconductor pattern constructed using polycrystalline silicon, amorphous silicon, oxide semiconductors, etc. The channel region can be a semiconductor pattern doped with impurities. The impurities can be, for example, n-type impurities, p-type impurities, or impurities of other metals.

[0189] The gate electrode GE can be disposed on the corresponding semiconductor layer SCL by placing the first gate insulating film GI1 between them.

[0190] The source electrode SE and drain electrode DE of the first transistor T1 can be connected to the source region and drain region of the corresponding semiconductor layer SCL through contact holes that pass through the second gate insulating film GI2 and the first gate insulating film GI1, respectively.

[0191] The source electrode SE and drain electrode DE of the second transistor T2 can be connected to the source region and drain region of the corresponding semiconductor layer SCL through contact holes that pass through the second gate insulating film GI2 and the first gate insulating film GI1, respectively.

[0192] The power line PL can be disposed on the interlayer insulating film ILD. A signal equivalent to the driving voltage from the driving unit can be supplied to the power line PL. For example, a first driving power supply VDD applied to the pixel PX can be supplied to the power line PL.

[0193] The circuit element layer (BPL) may further include a protective film (PSV) covering the first transistor T1 and the second transistor T2. The protective film PSV may include at least one of an inorganic insulating film made of inorganic materials and an organic insulating film made of organic materials. For example, the protective film PSV may include the inorganic insulating film and the organic insulating film on the inorganic insulating film.

[0194] The display element layer (LDL) can be disposed on the circuit element layer (BPL) and includes a light-emitting element (LD). Specifically, a light-emitting element (LD) can be disposed on the protective film (PSV). The light-emitting element (LD) can include a first electrode (AD), a second electrode (CD), and a light-emitting layer (EML) disposed between the first electrode (AD) and the second electrode (CD).

[0195] At least one of the first electrode AD and the second electrode CD can be a transmissive electrode. For example, when the light-emitting element LD is a back-emitting organic light-emitting display element, the first electrode AD can be a transmissive electrode and the second electrode CD can be a reflective electrode. Alternatively, when the light-emitting element LD is a front-emitting organic light-emitting display element, the first electrode can be a reflective electrode and the second electrode can be a transmissive electrode. Furthermore, when the light-emitting element LD is a double-sided emitting organic light-emitting display element, both the first electrode AD and the second electrode CD can be transmissive electrodes. The following explanation will use the case where the light-emitting element LD is a front-emitting organic light-emitting display element, the first electrode AD is an anode electrode, and the second electrode CD is a cathode electrode as an example.

[0196] The first electrode AD can be disposed on the protective film PSV. Such a first electrode AD can be connected to the drain electrode DE included in the first transistor T1 through a contact hole that passes through the protective film PSV and the interlayer insulating film ILD.

[0197] The first electrode AD may include a reflective film (not shown) capable of reflecting light and a transparent conductive film (not shown) disposed on the upper or lower part of the reflective film.

[0198] The reflective film may include a material capable of reflecting light. For example, the reflective film may include at least one of aluminum (Al), silver (Ag), chromium (Cr), molybdenum (Mo), platinum (Pt), nickel (Ni), and their alloys.

[0199] Transparent conductive films may include transparent conductive oxides. For example, a transparent conductive film may include at least one transparent conductive oxide selected from indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), gallium-doped zinc oxide (GZO), zinc tin oxide (ZTO), gallium tin oxide (GTO), and fluorine-doped tin oxide (FTO).

[0200] The light-emitting layer (EML) can be disposed on the exposed surface of the first electrode (AD). In one embodiment, the EML can have a multilayer thin film structure including at least a light generation layer (LGL). For example, the EML may include: a hole injection layer (HIL) for injecting holes; a hole transport layer (HTL) with excellent hole transport properties to suppress the movement of unbound electrons in the light generation layer and increase the chance of recombination between holes and electrons; a light generation layer that emits light through the recombination of injected electrons and holes; a hole blocking layer (HBL) for suppressing the movement of unbound holes in the light generation layer; an electron transport layer (ETL) for smoothly transporting electrons to the light generation layer; and / or an electron injection layer (EIL) for injecting electrons.

[0201] The light generated in the light-generating layer can be one of red, green, blue, and white; however, the present invention is not limited to this. For example, the light generated in the light-generating layer of the emissive layer (EML) can be one of magenta, cyan, and yellow.

[0202] The hole injection layer, hole transport layer, hole blocking layer, electron transport layer, and electron injection layer can be a common film connected in adjacent light-emitting regions.

[0203] The second electrode CD can be a semi-transmissive reflective film. For example, the second electrode CD can be a thin-film metal layer with a thickness sufficient to allow light emitted from the light-emitting layer EML to be transmitted. As an example, the second electrode CD can allow a portion of the light emitted from the light-emitting layer EML to be transmitted and the remainder of the light emitted from the light-emitting layer EML to be reflected.

[0204] In one embodiment, the second electrode CD may include a material with a work function lower than that of the transparent conductive film. For example, the second electrode CD may include at least one of molybdenum (Mo), tungsten (W), silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), and alloys thereof.

[0205] Some of the light emitted from the emissive layer (EML) may not be able to penetrate the second electrode (CD), and the light reflected by the second electrode (CD) may be reflected again by the reflective film. That is, the light emitted from the emissive layer (EML) can resonate between the reflective film and the second electrode (CD). This light resonance can improve the light extraction efficiency of the light-emitting element (LD).

[0206] A pixel defining film (or dam layer) PDL can be provided on a protective film PSV on which a first electrode AD is disposed, dividing the light-emitting area of ​​each pixel PX. The pixel defining film PDL can expose the upper surface of the first electrode AD and protrude from the protective film PSV along the periphery of each light-emitting area.

[0207] A light-emitting layer EML can be provided in the light-emitting area of ​​each pixel PX surrounded by the pixel limiting film PDL, and a second electrode CD is provided on the light-emitting layer EML.

[0208] Pixel-defined film (PDL) may include organic insulating materials. For example, PDL may include at least one of polystyrene, polymethyl methacrylate (PMMA), polyacrylonitrile (PAN), polyamide (PA), polyimide (PI), polyarylether (PAE), heterocyclic polymer, parylene, epoxy, benzocyclobutene (BCB), siloxane-based resin, and silane-based resin.

[0209] A protective layer PTL covering the second electrode CD can be provided on the second electrode CD. The protective layer PTL can be constructed using a thin-film encapsulation layer. In one embodiment, the thin-film encapsulation layer can be replaced by other forms of encapsulation film or encapsulation substrate, or at least one protective film.

[0210] The protective PTL layer prevents oxygen and moisture from penetrating into the light-emitting element (LD). Therefore, the thin-film encapsulation layer can include an inorganic film. The inorganic film can include at least one of silicon oxide, silicon nitride, silicon oxide nitride, aluminum oxide, titanium oxide, zirconium oxide, and tin oxide.

[0211] Reference Figure 14aThe second light-blocking layer PHL2 includes a second-first sub-light-blocking layer SPHL2-1 and a second-second sub-light-blocking layer SPHL2-2, and the first opening PIH1 of the first light-blocking layer PHL1 is located in the region between the second-first sub-light-blocking layer SPHL2-1 and the second-second sub-light-blocking layer SPHL2-2. Furthermore, the first opening PIH1 overlaps with the light-transmitting region LTA of the circuit element layer BPL.

[0212] Reference Figure 14b The first light-blocking layer PHL1 includes a first-1 sub-light-blocking layer SPHL1-1 and a first-2 sub-light-blocking layer SPHL1-2, and the second opening PIH2 of the second light-blocking layer PHL2 is located in the region between the first-1 sub-light-blocking layer SPHL1-1 and the first-2 sub-light-blocking layer SPHL1-2. Furthermore, the second opening PIH2 overlaps with the light-transmitting region LTA of the circuit element layer BPL.

[0213] In one embodiment of the present invention, when the second light-blocking layer PHL2 comprises a light-blocking mask made of an opaque metal layer, the second light-blocking layer PHL2 can be electrically connected to at least one of the signal wirings in the circuit element layer BPL. For example... Figure 14a and Figure 14b As shown, in the signal wiring of the circuit element layer BPL, the power line PL is electrically connected to the second light-blocking layer PHL2 through the contact hole that passes through the interlayer insulating film ILD, the second gate insulating film GI2, the first gate insulating film GI1 and the buffer layer BFL.

[0214] Furthermore, when both the first light-blocking layer PHL1 and the second light-blocking layer PHL2 comprise a light-blocking mask made of an opaque metal layer, the first light-blocking layer PHL1 can be electrically connected to the second light-blocking layer PHL2 through a contact hole penetrating the insulating layer INS. (Refer to...) Figure 14a The second-first sub-light-blocking layer SPHL2-1 can be electrically connected to the first light-blocking layer PHL1 through contact holes. Although in Figure 14a Although not shown in the figure, the first light-blocking layer PHL1 can be electrically connected to the second-second sub-light-blocking layer SPHL2-2 through the contact hole through the insulating layer INS.

[0215] Reference Figure 14b The second light-blocking layer, PHL2, can be electrically connected to the first-1 sub-light-blocking layer, SPHL1-1, through contact holes. Although in Figure 14b Although not shown in the figure, the second light-blocking layer PHL2 can be electrically connected to the first and second sub-light-blocking layers SPHL1-2 through the contact holes that penetrate the insulating layer INS.

[0216] Other components connected to the power line PL serve as parallel resistors with respect to the voltage of the power supplied through the power line PL (e.g., the first drive power supply VDD). As described above, the contact holes electrically connected to the power line PL and the first and second light-blocking layers PHL1 and PHL2 can be used as parallel resistors with respect to the power line PL. The increase in parallel resistance leads to a decrease in the total resistance with respect to the power line PL, thus enabling more efficient power supply through the power line PL. Consequently, the resistive voltage drop (IR-Drop) occurring in the display panel 110 can be improved. Furthermore, the light extraction efficiency of the light-emitting element LD can be improved.

[0217] In addition, Figure 14a and Figure 14b In this circuit, the second light-blocking layer PHL2 is electrically connected to the power line PL, but this does not limit the signal routing of the circuit element layer BPL to which the second light-blocking layer PHL2 is connected. For example, the second light-blocking layer PHL2 can also be connected to a data line DL, a scan line SL, etc., which are part of the signal routing of the circuit element layer BPL.

[0218] Figure 15a This is a simplified perspective view of the front surface of a portable terminal according to one embodiment. Figure 15b It is shown in a simplified way. Figure 15a A three-dimensional view of the rear surface of a portable terminal.

[0219] exist Figure 15a and Figure 15b In the middle, the portable terminal 200 can be with Figure 1 The display device shown is the same as the display device 10. As an example, the portable terminal 200 may include a display device that... Figures 2a to 14b The aforementioned display element layer LDL, circuit element layer BPL, first light-blocking layer PHL1, and second light-blocking layer PHL2.

[0220] For convenience, Figure 15a An example of displaying the home screen on the display unit 210 of a portable terminal 200 is shown.

[0221] Reference Figure 1 , Figure 15a and Figure 15b A display unit 210 may be arranged on the front surface 200a of a portable terminal 200 according to various embodiments. The front surface 200a of the portable terminal 200 may include: a display area AA, on which the display unit 210 is arranged to display various data; and a non-display area NA, disposed on at least one side of the display area AA.

[0222] A rear camera 241, a flash 242, a speaker 243, etc., may be arranged on the rear surface 200b of the portable terminal 200 according to various embodiments. Furthermore, a power / reset button, volume buttons, a terrestrial DMB antenna for broadcast reception, one or more microphones 245, 247, etc., may be arranged on the side surface 200c of the portable terminal 200 according to various embodiments. A connector 246 may be formed on the lower side surface of the portable terminal 200 according to various embodiments. Multiple electrodes are formed on the connector 246, allowing for wired connection to an external device. An earphone jack 244 may be arranged on the upper side surface of the portable terminal 200.

[0223] The display unit 210 can be arranged as a large screen to occupy the entire front surface 200a of the portable terminal 200. When the display unit 210 is arranged on the entire front surface 200a of the portable terminal 200, the portable terminal 200 can be substantially referred to as a "full front display". Here, for a "full front display", the front surface 200a of the portable terminal 200 can be the entire display area AA.

[0224] The aforementioned display unit 210 can be an organic light-emitting display panel (OLED). In this case, the portable terminal 200 employing the aforementioned display unit 210 can be an organic light-emitting display device. According to an embodiment, the display unit 210 can also be constructed using a touch screen including touch electrodes.

[0225] like Figure 15a As shown, the display unit 210 can display a home screen, and this home screen can be the first screen displayed on the display unit 210 when the portable terminal 200 is powered on. At this time, the upper part of the display unit 210 can display information such as battery charging status, received signal strength, and the current status of the portable terminal 200. The display unit 210 can display various content to the user (e.g., text, images, videos, icons, or symbols).

[0226] The above detailed description is merely illustrative and explanatory of the present invention. Furthermore, the above content is only intended to illustrate and explain preferred embodiments of the invention. As described above, the present invention can be used in various other combinations, modifications, and environments, and can be changed or modified within the scope of the concept of the invention disclosed in this specification, the scope equivalent to the described disclosure, and / or the technical or knowledge scope of those skilled in the art. Therefore, the above detailed description of the invention is not intended to limit the invention to the disclosed embodiments. Moreover, the scope of the claims should be interpreted to include other embodiments as well.

Claims

1. A display device, comprising: The substrate can be bent with a bending axis as a reference. A display element layer is disposed on the substrate and includes a plurality of light-emitting elements; A circuit element layer is disposed between the substrate and the display element layer, and includes multiple signal wirings and multiple light-transmitting areas. The multiple signal wirings transmit signals for driving the light-emitting element, and the multiple light-transmitting areas are located between the signal wirings on a plane and allow light to pass through. A first light-blocking layer is disposed between the substrate and the circuit element layer, and includes a plurality of first openings; A second light-blocking layer is disposed on the first light-blocking layer and includes a plurality of second openings; as well as A sensor layer is disposed on the side of the substrate opposite to the side where the first light-blocking layer is disposed, and senses incident light. The second light-blocking layer includes second sub-light-blocking layers arranged spaced apart from each other along the first direction and each equipped with the second opening. The second sub-light-blocking layer, adjacent to the bending axis, separates the bending axis by placing it between them. The first opening of the first light-blocking layer is arranged to overlap with the bending axis. The first opening and the second opening respectively provide a path for the light incident on the sensor layer.

2. The display device according to claim 1, wherein, The first opening and the second opening overlap with the light-transmitting areas that are different from each other.

3. The display device according to claim 1, wherein, The substrate includes a plurality of the bending axes.

4. The display device according to claim 1, wherein, An insulating layer is provided on one side of the substrate on which the first light-blocking layer is provided.

5. The display device according to claim 4, wherein, The second light-blocking layer is disposed on the insulating layer.

6. The display device according to claim 1, wherein, The first light-blocking layer includes first sub-light-blocking layers arranged spaced apart from each other along the first direction and each equipped with the first opening.

7. The display device according to claim 6, wherein, At least a portion of one of the first sub-light-blocking layers overlaps with at least a portion of one of the second sub-light-blocking layers.

8. The display device according to claim 6, wherein, The first opening of each of the first sub-light-blocking layers is configured not to overlap with the second sub-light-blocking layer. The second opening of each of the second sub-light-blocking layers is configured not to overlap with the first sub-light-blocking layer.

9. The display device according to claim 1, wherein, The second light-blocking layer is electrically connected to at least one of the signal wirings in the circuit element layer.

10. The display device according to claim 9, wherein, The first light-blocking layer is electrically connected to the second light-blocking layer.

11. A display device, comprising: The substrate can be bent with a bending axis as a reference. A display element layer is disposed on the substrate and includes a plurality of light-emitting elements; A circuit element layer is disposed between the substrate and the display element layer, and includes multiple signal wirings and multiple light-transmitting areas. The multiple signal wirings transmit signals for driving the light-emitting element, and the multiple light-transmitting areas are located between the signal wirings on a plane and allow light to pass through. A first light-blocking layer is disposed between the substrate and the circuit element layer, and includes a plurality of first openings; A second light-blocking layer is disposed on the first light-blocking layer and includes a plurality of second openings; as well as A sensor layer is disposed on the side of the substrate opposite to the side where the first light-blocking layer is disposed, and senses incident light. The first light-blocking layer includes first sub-light-blocking layers arranged spaced apart from each other along a first direction and each equipped with the first opening. The second light-blocking layer includes second sub-light-blocking layers arranged spaced apart from each other along the first direction and each equipped with a second opening. The second sub-light-blocking layer, adjacent to the bending axis, separates the bending axis by placing it between them. The area between the second opening of the second light-blocking layer and the second sub-light-blocking layer overlaps. The first opening of the first light-blocking layer is arranged to overlap with the bending axis. The first opening and the second opening respectively provide a path for the light incident on the sensor layer.

12. The display device according to claim 11, wherein, The substrate can be bent with respect to a bending axis. The first sub-light-blocking layer adjacent to the bending axis in the first sub-light-blocking layer places the bending axis therebetween and separates it.

13. The display device according to claim 11, wherein, An insulating layer is provided on one side of the substrate on which the first light-blocking layer is provided.

14. The display device according to claim 13, wherein, The second light-blocking layer is disposed on the insulating layer.

15. The display device according to claim 11, wherein, The first opening of each of the first sub-light-blocking layers is configured not to overlap with the second sub-light-blocking layer. The second opening of each of the second sub-light-blocking layers is configured not to overlap with the first sub-light-blocking layer.

16. The display device according to claim 11, wherein, The substrate includes a plurality of the bending axes.

17. The display device according to claim 11, wherein, The first sub-light-blocking layer extends in a zigzag pattern along a second direction different from the first direction. The second light-blocking layer includes second sub-light-blocking layers arranged spaced apart from each other along the first direction and extending in a zigzag pattern along the second direction.

18. A portable terminal, comprising: The display device according to any one of claims 1 to 17.

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