Display device

Abstract

A display device is provided. The display device includes a display panel, a roller including a groove recessed from an outer peripheral surface of the roller and winding or unwinding the display panel, printed circuit boards disposed in the groove and electrically connected to the display panel, and a plurality of flexible films disposed between the display panel and the plurality of printed circuit boards.

Description

Technical Field

[0001] Embodiments relate to a display device, and more particularly, to a rollable display device for displaying an image. Background Art

[0002] Recently, flexible display devices that can be transformed into various forms have been developed. Unlike flat panel displays, flexible display devices can be folded, bent, or rolled like paper. Flexible display devices can be easily carried and can improve user convenience.

[0003] The flexible display panel used in the flexible display device may have various shapes. For example, the flexible display panel may be connected to a roller and may be rolled around the roller or unrolled from the roller. Summary of the invention

[0004] Embodiments provide a display device capable of improving reliability.

[0005] However, the embodiments of the present disclosure are not limited to those described herein. The above and other embodiments will become more apparent to those skilled in the art to which the present disclosure belongs by referring to the detailed description of the present disclosure given below.

[0006] A display device according to an embodiment may include: a display panel; a roller including a groove depressed from an outer circumferential surface of the roller, the roller winding or unwinding the display panel; and a printed circuit board disposed in the groove and electrically connected to the display panel.

[0007] In an embodiment, the display device may further include a covering member disposed in the groove and covering at least a portion of the printed circuit board. The printed circuit board may be fixed to the roller by the covering member.

[0008] In an embodiment, the display device may further include a screw fastened to the cover member. The cover member may be fixed to the roller by the screw.

[0009] In an embodiment, the display device may further include a flexible film on which the data driver is mounted. The display panel and the printed circuit board may be electrically connected through the flexible film.

[0010] In an embodiment, the screw may be spaced apart from the flexible membrane in plan view.

[0011] In an embodiment, the cover member may overlap at least a portion of the flexible film in a plan view.

[0012] In an embodiment, the roller may include a protrusion that protrudes from a side surface of the groove toward a central portion of the groove and covers at least a portion of the printed circuit board.

[0013] In an embodiment, the printed circuit board may include a first region and a second region spaced apart from the first region. The covering member may cover the printed circuit board in the first region, and the protrusion of the roller may cover the printed circuit board in the second region.

[0014] In an embodiment, the groove may be formed along the curvature of the outer circumferential surface of the roller.

[0015] In embodiments, the depth of the grooves may be less than the thickness of the roller.

[0016] In an embodiment, the printed circuit board may be arranged outside the inner circumferential surface of the roller.

[0017] In an embodiment, the display device may further include a housing accommodating the display panel and the roller and including an opening through which the display panel enters or exits.

[0018] In an embodiment, a display panel may include a substrate, a color conversion layer disposed on the substrate, and a color filter layer disposed on the color conversion layer.

[0019] In an embodiment, the substrate may include glass.

[0020] A display device according to an embodiment includes: a display panel; a roller including a groove recessed from an outer peripheral surface along a curvature of the outer peripheral surface of the roller, the roller rolling or unwinding the display panel; a plurality of printed circuit boards arranged in the groove, spaced apart from the display panel in a first direction, and arranged in a second direction intersecting the first direction; and a plurality of flexible films arranged between the display panel and the plurality of printed circuit boards, spaced apart from each other, arranged in the second direction, and electrically connecting the display panel and each of the plurality of printed circuit boards.

[0021] In an embodiment, the display device may further include: a covering member arranged in the groove and covering at least a portion of each of the plurality of printed circuit boards; and at least one screw fastened to the covering member. The plurality of printed circuit boards may be fixed to the roller by the covering member, and the covering member may be fixed to the roller by the at least one screw.

[0022] In an embodiment, at least one screw may be fastened to the covering member between adjacent flexible films among the plurality of flexible films.

[0023] In embodiments, the depth of the grooves may be less than the thickness of the roller.

[0024] In an implementation, the display panel may include a glass substrate.

[0025] In an embodiment, the display panel may further include a color conversion layer disposed on the glass substrate and a color filter layer disposed on the color conversion layer.

[0026] In a display device according to an embodiment, a printed circuit board may be arranged in a groove recessed from the outer peripheral surface of a roller and connected to a display panel. For example, the printed circuit board may be fixed to the roller by a covering member and a screw. Since the printed circuit board is not arranged inside the roller but arranged adjacent to the outer peripheral surface of the roller, the end portion of the display panel that begins to be wound around the roller may have a gently bent shape. Therefore, although the display panel includes a material having a relatively high rigidity, as the display panel is wound or unfolded on the roller, cracks may not appear in the display panel. For example, in the case where the display panel includes a glass substrate, although the display panel is wound or unfolded on the roller, cracks may not appear in the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 and Figure 2 is a schematic perspective view illustrating a display device according to an embodiment.

[0028] Figure 3 It is a graphic Figure 1 Schematic cross-sectional view of a display device.

[0029] Figure 4 It is a graphic Figure 1 Schematic plan view of a portion of a display device.

[0030] Figure 5 yes Figure 3 An enlarged schematic plan view of region A of FIG.

[0031] Figure 6 yes Figure 3 An example of an enlarged schematic cross-sectional view of region B.

[0032] Figure 7 yes Figure 3 Another example of an enlarged schematic cross-sectional view of region B.

[0033] Figure 8 is along Figure 4 Schematic cross-sectional view taken along line II'. DETAILED DESCRIPTION

[0034] In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of various embodiments or implementations of the present invention. As used herein, "embodiment" and "implementation" are interchangeable words, which are non-limiting examples of the device or method disclosed herein. However, it is apparent that various embodiments can be practiced without these specific details or with one or more equivalent arrangements. Here, various embodiments do not have to be exclusive, nor do they have to limit the present disclosure. For example, the specific shape, configuration, and characteristics of an embodiment can be used or implemented in another embodiment.

[0035] Unless otherwise specified, the illustrated embodiments should be understood to provide features of the present invention. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects of various embodiments, etc. (hereinafter individually or collectively referred to as "elements") may be combined, separated, interchanged and / or rearranged in other ways without departing from the present invention.

[0036] The use of cross hatching and / or shading in the drawings is generally provided to clarify the boundaries between adjacent elements. Therefore, unless otherwise stated, the presence or absence of cross hatching or shading will not convey or indicate any preference or requirement for a specific material, material property, size, ratio, commonality between the illustrated elements and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for clarity and / or descriptive purposes. When the embodiment can be implemented in different ways, the specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously or in an order opposite to the described order. In addition, similar reference numerals represent similar elements.

[0037] When an element (or layer) is referred to as being "on" another element or layer, "connected to" or "coupled to" another element or layer, the element or layer may be directly on another element or layer, directly connected to or directly coupled to another element, or there may be an intervening element or layer. However, when an element or layer is referred to as being "directly on" another element or layer, "directly connected to" or "directly coupled to" another element or layer, there is no intervening element or layer. For this reason, the term "connection" may refer to a physical, electrical and / or fluid connection with or without an intervening element. In addition, the D1 axis, the D2 axis, and the D3 axis are not limited to the three axes of a rectangular coordinate system (such as the X axis, the Y axis, and the Z axis), and may be interpreted as having a broader meaning. For example, the D1 axis, the D2 axis, and the D3 axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purposes of this disclosure, "at least one of A and B" may be interpreted as meaning only A, only B, or any combination of A and B. In addition, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be interpreted as any combination of only X, only Y, only Z, or two or more of X, Y, and Z. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0038] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element discussed below may be referred to as the second element.

[0039] Spatially relative terms (such as "beneath", "below", "under", "lower", "above", "upper", "over", "higher", "side" (e.g., as in "sidewall"), etc.) may be used herein for descriptive purposes, and therefore are used to describe the relationship of one element to another element(s) as illustrated in the accompanying drawings. Spatially relative terms are intended to include different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, elements described as being "below" or "beneath" other elements or features will be oriented as being "above" the other elements or features. Therefore, the term "below" can include both above and below orientations. In addition, the device can be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and therefore, the spatially relative descriptors used herein are interpreted accordingly.

[0040] The terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In addition, the terms "comprises", "comprising", "includes", and / or "including", when used in this specification, specify the presence of the features, wholes, steps, operations, elements, components, and / or groups thereof, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups thereof. It is also noted that, as used herein, the terms "substantially", "approximately", and other similar terms are used as terms of approximation and not as terms of degree, and are therefore used to illustrate the inherent deviations in values ​​measured, calculated, and / or provided that would be recognized by those of ordinary skill in the art.

[0041] Various embodiments are described herein with reference to cross-sections and / or exploded illustrations as schematic illustrations of embodiments and / or intermediate structures. Therefore, it is expected that the shapes of the illustrations will change due to, for example, manufacturing techniques and / or tolerances. Therefore, the embodiments disclosed herein are not necessarily to be understood as limited to the specific shapes of the illustrated areas, but rather include deviations in shapes caused by, for example, manufacturing. In this way, the areas illustrated in the drawings may be schematic in nature, and the shapes of these areas may not reflect the actual shapes of the areas of the device, and therefore are not necessarily intended to be limiting.

[0042] As is customary in the art, in terms of functional blocks, units and / or modules, some embodiments are described and illustrated in the accompanying drawings. Those skilled in the art will recognize that these blocks, units and / or modules are physically implemented by electronic (or optical) circuits (such as logic circuits, discrete components, microprocessors, hard-wired circuits, memory elements, line connections, etc. that can be formed using semiconductor-based manufacturing techniques or other manufacturing techniques). In the case where a block, unit and / or module is implemented by a microprocessor or other similar hardware, software (e.g., microcode) can be used to program and control the block, unit and / or module to perform the various functions discussed herein, and the block, unit and / or module can be selectively driven by firmware and / or software. It is also considered that each block, unit and / or module can be implemented by dedicated hardware, or as a combination of dedicated hardware that performs some functions and a processor (e.g., one or more programmed microprocessors and associated circuits) that performs other functions. In addition, without departing from the scope of the present invention, each block, unit and / or module of some embodiments can be physically separated into two or more interactive and discrete blocks, units and / or modules. Furthermore, the blocks, units and / or modules of some embodiments may be physically combined into more complex blocks, units and / or modules without departing from the scope of the invention.

[0043] Hereinafter, the embodiments will be described in more detail with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals are used for the same components, and redundant descriptions of the same components will be omitted.

[0044] Figure 1 and Figure 2 is a schematic perspective view illustrating a display device according to an embodiment. Figure 3 It is a graphic Figure 1 Schematic cross-sectional view of a display device.

[0045] Reference Figure 1 , Figure 2 and Figure 3 , the display device DD may include a housing HS, a display panel DP, and a roller RL.

[0046] The housing HS may define an inner space for accommodating the display panel DP and the roller RL. For example, the housing HS may define an opening OP through which the display panel DP enters or exits the housing HS. For example, the opening OP may have various shapes according to the shape of the display panel DP. The display panel DP may enter or exit the housing HS in a first direction D1 or in a direction opposite to the first direction D1 through the opening OP.

[0047] In an embodiment, the display panel DP may be a flexible display panel. For example, the display panel DP may be a rollable display panel. Therefore, although a portion of the display panel DP is rolled, the display panel DP may display an image. For example, an area in which an image is displayed to a user may be provided regardless of the area in which the display panel DP is rolled.

[0048] The roller RL may roll or unroll the display panel DP. In an embodiment, the roller RL may have a cylindrical shape extending in a second direction D2 crossing the first direction D1. For example, the second direction D2 may be perpendicular to the first direction D1. However, the embodiment is not limited thereto, and the roller RL may have various shapes that roll or unroll the display panel DP.

[0049] The roller RL may be connected to the end portion of the display panel DP. The end portion of the display panel DP may be fixed to the roller RL. The display panel DP may be rolled around the roller RL from the end portion of the display panel DP.

[0050] In an embodiment, the roller RL may rotate around a rotation axis parallel to the second direction D2. For example, the roller RL may rotate clockwise or counterclockwise around a rotation axis parallel to the second direction D2 to roll or unroll the display panel DP around the roller RL.

[0051] When power is applied to the display panel DP or the display function is operated, the display panel DP wound around the roller RL inside the housing HS may be exposed to the outside of the housing HS through the opening OP when sliding in the direction opposite to the first direction D1 by the rotation of the roller RL. For example, when power is not applied to the display panel DP or the display function is not operated, the display panel DP exposed to the outside of the housing HS may be wound around the roller RL inside the housing HS through the opening OP when sliding in the first direction D1 by the rotation of the roller RL.

[0052] Figure 4 It is a graphic Figure 1 For example, Figure 4 may be a schematic plan view in a state in which the display panel DP is fully unfolded.

[0053] Reference Figure 1 and Figure 4, the display device DD may include a display panel DP, a printed circuit board PCB and a flexible film FF.

[0054] The display panel DP may include a display area DA and a non-display area NDA.

[0055] The display area DA may be an area where an image is displayed. In the display area DA, the pixels PX may be repeatedly arranged along the first direction D1 and the second direction D2 in a plan view. Each of the plurality of pixels PX may be defined as a minimum light emitting unit that displays light.

[0056] A signal line such as a data line DL may be arranged in the display area DA. The signal line may be connected (eg, electrically connected) to each of the plurality of pixels PX. Each of the plurality of pixels PX may receive a signal or voltage from the signal line.

[0057] The non-display area NDA may be an area where an image is not displayed. The non-display area NDA may be arranged around the display area DA. For example, the non-display area NDA may surround (e.g., completely surround) the display area DA. A driver that provides a signal or voltage to the pixel PX may be arranged in the non-display area NDA.

[0058] Each of the plurality of flexible films FF may be arranged between the display panel DP and the printed circuit board PCB. The plurality of flexible films FF may be arranged in the second direction D2 and may be spaced apart from each other. Each of the plurality of flexible films FF may be connected (eg, electrically connected) to the display panel DP and the printed circuit board PCB.

[0059] A plurality of data drivers DDV may be mounted on the flexible film FF, respectively. For example, the plurality of data drivers DDV may be implemented as a plurality of integrated circuits (ICs) and may be mounted on the flexible film FF, respectively, in a chip-on-film (COF) method. The plurality of data drivers DDV may be connected (e.g., electrically connected) to the plurality of pixels PX, respectively, through data lines DL. Thus, the plurality of data drivers DDV may provide a data voltage to each of the plurality of pixels PX.

[0060] Each of the plurality of printed circuit boards PCB may be spaced apart from the display panel DP in the first direction D1. The plurality of printed circuit boards PCB may be arranged in the second direction D2 and may be spaced apart from each other. For example, each of the plurality of printed circuit boards PCB may be connected (e.g., electrically connected) to the flexible film FF. For example, the printed circuit board PCB may be connected (e.g., electrically connected) to the display panel DP through the flexible film FF.

[0061] The timing controller may be implemented as an integrated circuit and mounted on a printed circuit board PCB in a chip-on-film method. The timing controller may be connected (e.g., electrically connected) to a data driver DDV and a driver arranged in a non-display area NDA of the display panel DP through the printed circuit board PCB and the flexible film FF. Therefore, the timing controller may control the data driver DDV and the driver.

[0062] Figure 5 yes Figure 3 An enlarged schematic plan view of region A of FIG. Figure 6 yes Figure 3 An example of an enlarged schematic cross-sectional view of region B. Figure 7 yes Figure 3 Another example of an enlarged schematic cross-sectional view of region B.

[0063] Figure 6 may be an enlarged schematic cross-sectional view of a region in which the flexible film FF is not arranged, and Figure 7 FIG. 4 is an enlarged schematic cross-sectional view of a region in which the flexible film FF is arranged.

[0064] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the display device DD may include a display panel DP, a roll RL, a printed circuit board PCB, a flexible film FF, a cover member CM, and at least one screw SC.

[0065] The roller RL may rotate about a rotation axis parallel to the second direction D2 to roll or unroll the display panel DP. In an embodiment, the roller RL may have a hollow cylindrical shape. The roller RL may include an outer circumferential surface OS and an inner circumferential surface IS facing the outer circumferential surface OS, and the inside of the inner circumferential surface IS of the roller RL may be hollow. The display panel DP may be rolled or unrolled on the roller RL along the outer circumferential surface OS.

[0066] In an embodiment, the roller RL may define a groove H that is recessed from the outer peripheral surface OS toward the inner peripheral surface IS. For example, the depth DT of the groove H may be less than the thickness TH of the roller RL. For example, the depth DT of the groove H may be the shortest distance from the bottom surface of the groove H to the outer peripheral surface OS of the roller RL, and the thickness TH of the roller RL may be the shortest distance from the inner peripheral surface IS of the roller RL to the outer peripheral surface OS of the roller RL. For example, the groove H may be defined along the curvature of the outer peripheral surface OS. For example, the depth DT of the groove H may be substantially constant along the curvature of the outer peripheral surface OS.

[0067] The end portion of the display panel DP starting to be wound around the roll RL may be fixed to a portion of the outer circumferential surface OS of the roll RL. For example, the end portion of the display panel DP may extend and be fixed to an edge portion of the first side surface of the groove H.

[0068] The roller RL may include a protrusion PP protruding from a second side surface facing a first side surface of the groove H toward a central portion of the groove H. The protrusion PP may form a portion of the outer circumferential surface OS. For example, the protrusion PP may be spaced apart from the bottom surface of the groove H to define (or form) a space therebetween.

[0069] The printed circuit board PCB may be arranged in the groove H and may be arranged along the curvature of the groove H. The printed circuit board PCB may be positioned outside the inner peripheral surface IS of the roller RL. For example, in the cross-sectional view, the printed circuit board PCB may be positioned between the outer peripheral surface OS and the inner peripheral surface IS. The printed circuit board PCB may include a first area A1, a second area A2 spaced apart from the first area A1, and a third area A3 positioned between the first area A1 and the second area A2.

[0070] At least a portion of the printed circuit board PCB may be arranged in the space defined by the protrusion PP. The protrusion PP may cover at least a portion of the printed circuit board PCB. For example, the second area A2 may be an area of ​​the printed circuit board PCB arranged in the space and covered by the protrusion PP.

[0071] Each of the plurality of flexible films FF may connect the display panel DP and the printed circuit board PCB. For example, each of the plurality of flexible films FF may be connected (eg, electrically connected) to the printed circuit board PCB disposed in the groove H and an end portion of the display panel DP disposed on the outer peripheral surface OS of the roller RL.

[0072] The covering member CM may be arranged in the groove H. In an embodiment, the covering member CM may cover at least a portion of the printed circuit board PCB. The covering member CM may be spaced apart from the protrusion PP. For example, the first area A1 may be an area of ​​the printed circuit board PCB covered by the covering member CM. For example, the third area A3 may be an area of ​​the printed circuit board PCB not covered by the covering member CM or the roller RL.

[0073] Therefore, the printed circuit board PCB may be fixed to the roller RL. For example, the printed circuit board PCB may be fixed to the groove H through the cover member CM and the protrusion PP of the roller RL. The printed circuit board PCB may be arranged adjacent to the outer peripheral surface OS of the roller RL.

[0074] For example, the cover member CM may overlap at least a portion of each of the plurality of flexible films FF in a plan view.The cover member CM may extend in a direction from the first area A1 toward the first side surface of the groove H along the curvature of the outer peripheral surface OS.

[0075] The screws SC may be fastened to the cover member CM. In an embodiment, the screws SC may fix the cover member CM to the roller RL. Therefore, the printed circuit board PCB may be fixed to the roller RL.

[0076] In a plan view, the screw SC may be spaced apart from the flexible film FF. For example, in a plan view, the screw SC may not overlap the flexible film FF. The screw SC may be fastened to the covering member CM between adjacent flexible films FF among a plurality of flexible films FF spaced apart from each other. For example, the covering member CM may be fixed to the roller RL by the screw SC in a region where the flexible film FF is not arranged. For example, the covering member CM may be spaced apart from the roller RL in a region where the flexible film FF is arranged.

[0077] The screws SC may be continuously or discontinuously arranged between adjacent flexible films FF. The number of the screws SC may be variously changed according to the size of the display panel DP, the number of flexible films FF, and the like.

[0078] In the display device DD according to the embodiment, the printed circuit board PCB may be arranged in the groove H of the roller RL and connected (e.g., electrically connected) to the display panel DP. For example, the printed circuit board PCB may be fixed to the roller RL by the covering member CM and the screws SC. Since the printed circuit board PCB is arranged adjacent to the outer peripheral surface OS of the roller RL, the end portion of the display panel DP that begins to curl around the roller RL may have a gently bent shape. Therefore, although the display panel DP includes a material having relatively high rigidity, cracks may not occur in the display panel DP as the display panel DP is wound or unfolded on the roller RL. For example, in the case where the display panel DP includes a glass substrate, cracks may not occur in the display panel DP although the display panel DP is wound or unfolded on the roller RL.

[0079] Figure 8 is along Figure 4 For example, Figure 8 may be a schematic cross-sectional view illustrating a portion of the display area DA of the display panel DP.

[0080] Reference Figure 1 , Figure 4 and Figure 8 , the display panel DP may include a first light emitting area LA1, a second light emitting area LA2, a third light emitting area LA3, and a non-light emitting area NLA.

[0081] Each of the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3 may be an area in which light emitted from the light emitting element LD is emitted to the outside of the display device DD. The first light emitting area LA1 may emit the first light, the second light emitting area LA2 may emit the second light, and the third light emitting area LA3 may emit the third light. For example, the first light may be light in a red wavelength band, the second light may be light in a green wavelength band, and the third light may be light in a blue wavelength band, but the embodiment is not limited thereto.

[0082] The non-light emitting area NLA may be an area that does not emit light. The non-light emitting area NLA may be positioned between the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3. For example, in a plan view, the non-light emitting area NLA may surround the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3.

[0083] although Figure 8 It is illustrated that the display panel DP includes three light emitting areas LA1, LA2, and LA3, but the embodiment is not limited thereto. In another example, the display panel DP may include four or more light emitting areas.

[0084] The display panel DP may include a substrate SUB, a buffer layer BFR, a transistor TR, a gate insulating layer GI, an interlayer insulating layer ILD, a via insulating layer VIA, a light emitting element LD, a pixel defining layer PDL, an encapsulation layer TFE, a color conversion layer CCL, a low refractive index layer LR, and a color filter layer CFL.

[0085] For example, the transistor TR may include an active pattern ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE. The light emitting element LD may include a pixel electrode PE, a light emitting layer EL, and a common electrode CE.

[0086] The substrate SUB may include a transparent material or an opaque material. For example, the substrate SUB may include glass, quartz, plastic, etc. These materials may be used alone or in combination with each other. In an embodiment, the substrate SUB may be a glass substrate.

[0087] The buffer layer BFR may be disposed on the substrate SUB. The buffer layer BFR may prevent metal atoms or impurities from diffusing from the substrate SUB to the transistor TR. For example, in the case where the surface of the substrate SUB is uneven, the buffer layer BFR may improve the flatness of the surface of the substrate SUB. The buffer layer BFR may include, for example, silicon oxide (SiO x ), Silicon Nitride (SiN x ), Silicon Carbide (SiC x ), silicon oxynitride (SiO x N y ), Silicon Oxycarbide (SiO x Cy ) etc. These materials can be used alone or in combination with each other.

[0088] The active pattern ACT may be arranged on the buffer layer BFR. The active pattern ACT may include a source region, a drain region, and a channel region positioned between the source region and the drain region. The active pattern ACT may include a silicon semiconductor material or an oxide semiconductor material. Examples of silicon semiconductor materials may include amorphous silicon, polycrystalline silicon, and the like. Examples of oxide semiconductor materials may include indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), and the like. These materials may be used alone or in combination with each other.

[0089] The gate insulating layer GI may be disposed on the active pattern ACT. The gate insulating layer GI may overlap the channel region of the active pattern ACT. The gate insulating layer GI may include a material such as silicon oxide (SiO x ), silicon nitride (SiN x ), Silicon Carbide (SiC x ), silicon oxynitride (SiO x N y ), Silicon Oxycarbide (SiO x C y ) etc. These materials can be used alone or in combination with each other.

[0090] The gate electrode GE may be arranged on the gate insulating layer GI. The gate electrode GE may overlap with the channel region of the active pattern ACT. The gate electrode GE may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. Examples of metals may include silver (Ag), molybdenum (Mo), aluminum (Al), tungsten (W), copper (Cu), nickel (Ni), chromium (Cr), titanium (Ti), tantalum (Ta), platinum (Pt), scandium (Sc), etc. Examples of conductive metal oxides may include indium tin oxide, indium zinc oxide, etc. Examples of metal nitrides may include aluminum nitride (AlN x ), tungsten nitride (WN x ), chromium nitride (CrN x ) etc. These materials may be used alone or in combination with each other.

[0091] The interlayer insulating layer ILD may be arranged on the gate electrode GE. The interlayer insulating layer ILD may fully cover the gate electrode GE and may have a substantially flat upper surface without generating (or forming) a step portion around the gate electrode GE. In another example, the interlayer insulating layer ILD may cover the gate electrode GE and may be arranged along the contour of the gate electrode GE with a uniform thickness. The interlayer insulating layer ILD may include a material such as silicon oxide (SiO x ), silicon nitride (SiN x ), Silicon Carbide (SiC x ), silicon oxynitride (SiOx N y ), Silicon Oxycarbide (SiO x C y ) etc. These materials can be used alone or in combination with each other.

[0092] The source electrode SE and the drain electrode DE may be arranged on the interlayer insulating layer ILD. The source electrode SE may be connected (e.g., electrically connected) to the source region of the active pattern ACT through a first contact hole penetrating the interlayer insulating layer ILD. For example, the drain electrode DE may be connected (e.g., electrically connected) to the drain region of the active pattern ACT through a second contact hole penetrating the interlayer insulating layer ILD. For example, each of the source electrode SE and the drain electrode DE may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These materials may be used alone or in combination with each other.

[0093] Thus, a transistor TR including the active pattern ACT, the gate electrode GE, the source electrode SE, and the drain electrode DE may be disposed on the substrate SUB.

[0094] The via insulating layer VIA may be disposed on the interlayer insulating layer ILD. The via insulating layer VIA may fully cover the source electrode SE and the drain electrode DE. The via insulating layer VIA may include an organic material such as phenolic resin, acrylic resin, polyimide resin, polyamide resin, siloxane resin, epoxy resin, etc. These materials may be used alone or in combination with each other.

[0095] The pixel electrode PE may be arranged on the through-hole insulating layer VIA. The pixel electrode PE may be connected (e.g., electrically connected) to the drain electrode DE through a contact hole penetrating the through-hole insulating layer VIA. The pixel electrode PE may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These materials may be used alone or in combination with each other. For example, the pixel electrode PE may be used as an anode (or function as an anode).

[0096] The pixel defining layer PDL may be arranged on the through hole insulating layer VIA. The pixel defining layer PDL may cover at least a portion of the pixel electrode PE. For example, the pixel defining layer PDL may cover an edge portion of the pixel electrode PE. For example, an opening exposing at least a portion of the upper surface of the pixel electrode PE may be defined in the pixel defining layer PDL. The pixel defining layer PDL may include an inorganic material or an organic material. For example, the pixel defining layer PDL may include an organic material such as an epoxy resin, a silicone resin, etc. For another example, the pixel defining layer PDL may include an inorganic material or an organic material including a black light blocking material.

[0097] The light emitting layer EL may be arranged on the pixel electrode PE and the pixel defining layer PDL. The light emitting layer EL may be arranged (e.g., completely arranged) in the display area DA. The light emitting layer EL may include an organic material that emits light of a preset color. For example, the light emitting layer EL may emit light in a blue wavelength band, but the embodiment is not limited thereto.

[0098] The common electrode CE may be arranged on the light emitting layer EL. The common electrode CE may be a plate electrode. The common electrode CE may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These materials may be used alone or in combination with each other. For example, the common electrode CE may be used as a cathode (or function as a cathode).

[0099] Thus, a light emitting element LD including the pixel electrode PE, the light emitting layer EL, and the common electrode CE may be disposed on the substrate SUB. The light emitting element LD may be connected (eg, electrically connected) to the transistor TR.

[0100] The encapsulation layer TFE may be disposed on the common electrode CE. The encapsulation layer TFE may protect the light emitting element LD from external oxygen and moisture. The encapsulation layer TFE may include at least one inorganic layer and at least one organic layer.

[0101] The color conversion layer CCL may be disposed on the encapsulation layer TFE. The color conversion layer CCL may include a dam pattern BP, a first color conversion pattern CCP1, a second color conversion pattern CCP2, and a transmissive pattern LTP.

[0102] The dam pattern BP may overlap the non-light emitting area NLA. The dam pattern BP may define an opening overlapping each of the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3. The dam pattern BP may include a light blocking material and may block light emitted from a lower portion.

[0103] Each of the first color conversion pattern CCP1, the second color conversion pattern CCP2, and the transmissive pattern LTP may be arranged in an opening defined by the dam pattern BP. The first color conversion pattern CCP1 may be arranged in an opening overlapping the first light emitting area LA1, the second color conversion pattern CCP2 may be arranged in an opening overlapping the second light emitting area LA2, and the transmissive pattern LTP may be arranged in an opening overlapping the third light emitting area LA3.

[0104] Each of the first color conversion pattern CCP1 and the second color conversion pattern CCP2 may convert light emitted from the light emitting layer EL into light having a specific wavelength.

[0105] The first color conversion pattern CCP1 may include a first quantum dot excited by light emitted from the light emitting layer EL and emitting the first light. For example, the first color conversion pattern CCP1 may further include first scattering particles and a first photosensitive polymer in which the first scattering particles are dispersed. In an embodiment, the first color conversion pattern CCP1 may convert the light emitted from the light emitting layer EL into the first light. For example, as the light emitted from the light emitting layer EL passes through the first color conversion pattern CCP1, light in a red wavelength band may be emitted from the first light emitting area LA1, but the embodiment is not limited thereto.

[0106] The second color conversion pattern CCP2 may include a second quantum dot excited by the light emitted from the light emitting layer EL and emitting the second light. For example, the second color conversion pattern CCP2 may further include second scattering particles and a second photosensitive polymer in which the second scattering particles are dispersed. In an embodiment, the second color conversion pattern CCP2 may convert the light emitted from the light emitting layer EL into the second light. For example, as the light emitted from the light emitting layer EL passes through the second color conversion pattern CCP2, light in a green wavelength band may be emitted from the second light emitting area LA2, but the embodiment is not limited thereto.

[0107] The transmission pattern LTP may include third scattering particles and a third photosensitive polymer in which the third scattering particles are dispersed. In an embodiment, the transmission pattern LTP may transmit light emitted from the light emitting layer EL. For example, as the light emitted from the light emitting layer EL passes through the transmission pattern LTP, light in a blue wavelength band may be emitted from the third light emitting region LA3, but the embodiment is not limited thereto.

[0108] The first scattering particles, the second scattering particles, and the third scattering particles may scatter and emit light emitted from the light emitting layer EL. The first scattering particles, the second scattering particles, and the third scattering particles may include the same material. Each of the first photosensitive polymer, the second photosensitive polymer, and the third photosensitive polymer may include an organic material having light transmittance, such as silicone resin, epoxy resin, etc.

[0109] The low refractive index layer LR may be disposed on the color conversion layer CCL. The low refractive index layer LR may have a predetermined refractive index. The low refractive index layer LR may improve light efficiency of the display device DD.

[0110] although Figure 8 The low refractive index layer LR is illustrated as being arranged on the color conversion layer CCL, but the embodiment is not limited thereto. In another example, the low refractive index layer LR may be arranged below the color conversion layer CCL. For example, the low refractive index layer LR may include a first low refractive index layer and a second low refractive index layer, the first low refractive index layer may be arranged on the color conversion layer CCL, and the second low refractive index layer may be arranged below the color conversion layer CCL.

[0111] The color filter layer CFL may be disposed on the low refractive index layer LR. The color filter layer CFL may include first, second, and third color filters CF1, CF2, and CF3. Each of the first, second, and third color filters CF1, CF2, and CF3 may selectively transmit light having a specific wavelength.

[0112] The first color filter CF1 may overlap the first color conversion pattern CCP1, the second color filter CF2 may overlap the second color conversion pattern CCP2, and the third color filter CF3 may overlap the transmissive pattern LTP.

[0113] The first color filter CF1 may transmit the first light and may block light in a wavelength band different from the first light. The second color filter CF2 may transmit the second light and may block light in a wavelength band different from the second light. The third color filter CF3 may transmit the third light and may block light in a wavelength band different from the third light. For example, the first color filter CF1 may transmit light in a red wavelength band, the second color filter CF2 may transmit light in a green wavelength band, and the third color filter CF3 may transmit light in a blue wavelength band, but the embodiment is not limited thereto.

[0114] For example, Figure 8 The cross-sectional structure of the display area DA illustrated in FIG. 1 is merely an example and may be variously changed according to embodiments.

[0115] The present disclosure can be applied to various display devices. For example, the embodiments can be applied to various display devices such as display devices for vehicles, ships and aircraft, display devices for portable communication devices, display devices for exhibitions or information transmission, medical display devices, etc.

[0116] At the end of the detailed description, those skilled in the art will recognize that many changes and modifications can be made to the embodiments without departing substantially from the principles, spirit and scope of the present disclosure. Therefore, the disclosed embodiments are used only in a general and descriptive sense and not for the purpose of limitation.

Claims

1. A display device, comprising: Display panel; a roller, the roller comprising a groove sunken from an outer peripheral surface of the roller, the roller winding or unwinding the display panel; as well as A printed circuit board is arranged in the groove and is electrically connected to the display panel.

2. The display device according to claim 1, further comprising: a covering member arranged in the groove and covering at least a portion of the printed circuit board, Wherein, the printed circuit board is fixed to the roller through the covering member.

3. The display device according to claim 2, further comprising: a screw fastened to the covering member, Wherein, the covering member is fixed to the roller by the screw.

4. The display device according to claim 3, further comprising: a flexible film having a data driver mounted thereon, Wherein, the display panel and the printed circuit board are electrically connected through the flexible film.

5. The display device according to claim 4, wherein: In plan view, the screw is spaced apart from the flexible membrane.

6. The display device according to claim 4, wherein: In a plan view, the cover member overlaps at least a portion of the flexible film.

7. The display device according to claim 2, wherein: The roller includes a protrusion that protrudes from a side surface of the groove toward a central portion of the groove and covers at least a portion of the printed circuit board.

8. The display device according to claim 7, wherein: The printed circuit board includes a first area and a second area spaced apart from the first area, The covering member covers the printed circuit board in the first region, and The protrusion of the roller covers the printed circuit board in the second region.

9. The display device according to claim 1, wherein: The groove is formed along the curvature of the outer peripheral surface of the roller.

10. The display device according to claim 1, wherein: The depth of the groove is less than the thickness of the roller.

11. The display device according to claim 1, wherein: The printed circuit board is arranged outside the inner peripheral surface of the roller.

12. The display device according to claim 1, further comprising: A housing accommodates the display panel and the roller and includes an opening through which the display panel enters or exits.

13. The display device according to claim 1, wherein: The display panel comprises: substrate; a color conversion layer disposed on the substrate; and A color filter layer is disposed on the color conversion layer.

14. The display device according to claim 13, wherein: The substrate includes glass.

15. A display device, comprising: Display panel; a roller, the roller comprising a groove sunken from an outer peripheral surface along a curvature of the outer peripheral surface of the roller, the roller winding or unwinding the display panel; a plurality of printed circuit boards arranged in the groove, spaced apart from the display panel in a first direction, and arranged in a second direction intersecting the first direction; as well as A plurality of flexible films are arranged between the display panel and the plurality of printed circuit boards, are spaced apart from each other, are arranged in the second direction, and electrically connect the display panel and each of the plurality of printed circuit boards.

16. The display device according to claim 15, further comprising: a covering member disposed in the groove and covering at least a portion of each of the plurality of printed circuit boards; as well as at least one screw fastened to the covering member, wherein the plurality of printed circuit boards are fixed to the roller via the covering member, and The covering member is fixed to the roller by the at least one screw.

17. The display device according to claim 16, wherein: The at least one screw is fastened to the cover member between adjacent flexible films among the plurality of flexible films.

18. The display device according to claim 15, wherein: The depth of the groove is less than the thickness of the roller.

19. The display device according to claim 15, wherein: The display panel includes a glass substrate.

20. The display device according to claim 19, wherein: The display panel further includes: a color conversion layer disposed on the glass substrate; and A color filter layer is disposed on the color conversion layer.

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