Display panel

Abstract

A display panel is disclosed. The display panel includes: a light-emitting element array including a plurality of light-emitting elements respectively corresponding to a plurality of pixel regions arranged in a display area; a packaging film covering the light-emitting element array; a touch sensor disposed above the packaging film; and a touch protection film covering the touch sensor, wherein the touch protection film includes a material in which core-shell structure particles are dispersed. Thus, due to the touch protection film including the material containing the core-shell structure particles, the light extraction efficiency of the light released from the light-emitting element array to the outside can be improved.

Description

Technical Field

[0001] The present disclosure relates to a display panel including a touch sensor. Background Art

[0002] Display devices are applied to various electronic devices such as televisions, mobile phones, laptop computers, and tablet computers. Therefore, research on developing thinner, lighter, and lower-power display devices has been ongoing.

[0003] Such a display device generally includes a flat display panel and a panel driver for driving the display panel, and the flat display panel includes a display area for displaying an image.

[0004] Representative examples of display devices include a liquid crystal display device (LCD), a plasma display device (PDP), a field emission display device (FED), an electroluminescent display device (ELD), an electro-wetting display device (EWD), and an organic light-emitting diode display device (OLED).

[0005] The display panel of an organic light-emitting diode display device (OLED) uses light-emitting elements to emit light for image display. In this regard, since the organic light-emitting diode display device is a self-luminous device, the organic light-emitting diode display device can display an image without a separate light source. Therefore, compared with a liquid crystal display device, the organic light-emitting diode display device has an advantage in terms of reducing weight and thickness.

[0006] In recent years, in order to improve user convenience, the display panel may include a touch sensor for sensing touch. The touch sensor realizes the function of receiving commands from a user by detecting the contact points of a human hand or an object in the display area.

[0007] The touch sensor may be disposed adjacent to the display surface of the display panel to prevent deterioration of the sensitivity of touch sensing. In this case, since the light emitted from the light-emitting elements is emitted to the outside through the path passing through the touch sensor, light loss may occur. Therefore, there is a problem that the brightness inevitably decreases, and thus there is a limitation in improving the display quality. Summary of the Invention

[0008] An object of the present disclosure is to provide a display panel that improves display quality while including a touch sensor.

[0009] The object of the present disclosure is not limited to the above object. Other objects and advantages of the present disclosure not mentioned above can be understood from the following description and will be more clearly understood according to the embodiments of the present disclosure. In addition, it should be easily recognized that the objects and advantages of the present disclosure can be achieved by the features disclosed in the claims and their combinations.

[0010] In one aspect of the present disclosure, a display panel is provided, including: a light-emitting element array including a plurality of light-emitting elements respectively corresponding to a plurality of pixel regions arranged in a display area; an encapsulation film covering the light-emitting element array; a touch sensor disposed above the encapsulation film; and a touch protection film covering the touch sensor, wherein the touch protection film includes a material in which core-shell structure particles are dispersed.

[0011] In one implementation, each of the core-shell structure particles includes a core containing a metal oxide and a shell containing a molecular sieve and surrounding the core.

[0012] In one implementation, the metal oxide includes an oxide containing Ti or Fe, and the molecular sieve includes MCM-41 or SBA-15.

[0013] In one implementation, the touch protection film further includes at least one adhesive and a photosensitizer, and the touch protection film has adhesiveness due to the at least one adhesive.

[0014] In one implementation, the adhesive includes at least one of an alkali-developable adhesive and a silicon-based adhesive, and the photosensitizer includes an oxime compound or a benzophenone compound.

[0015] In one implementation, the display panel further includes a polarizing film attached to the touch protection film and corresponding to the display area.

[0016] In one implementation, the touch sensor includes: a touch interlayer insulating film disposed above the encapsulation film; a first touch electrode including: a plurality of first electrode patterns disposed above the touch interlayer insulating film and arranged in a first direction, and a plurality of first bridges, each first bridge connecting the first electrode patterns adjacent to each other in the first direction; and a second touch electrode including: a plurality of second electrode patterns disposed above the touch interlayer insulating film and spaced apart from the first electrode, and a plurality of second electrode patterns arranged in a second direction perpendicular to the first direction, and a plurality of second bridges, each second bridge connecting the second electrode patterns adjacent to each other in the second direction. Wherein, the first bridge is disposed above the touch interlayer insulating film, wherein each second bridge is disposed above the encapsulation film and covered by the touch interlayer insulating film, and wherein each second bridge is connected to each second electrode pattern via a contact hole passing through the touch interlayer insulating film.

[0017] According to one embodiment of the present disclosure, a touch sensor is disposed above a packaging film covering a light-emitting element array. A touch protection film covering the touch sensor includes a material containing core-shell structured particles. Each core-shell structured particle includes a core containing a metal oxide and a shell containing a molecular sieve and surrounding the core. In one example, the molecular sieve may include MCM-41 or SBA-15. Since the molecular sieve has a hexagonal columnar structure, light can pass through the pores in the molecular sieve, thereby enhancing the linearity of the light. In addition, since the core includes a metal oxide having a relatively high refractive index, the light transmittance of the touch protection film can be improved.

[0018] Therefore, by including a touch protection film of a material in which core-shell structured particles are dispersed, the light extraction efficiency of the light released from the light-emitting element array to the outside can be improved.

[0019] Therefore, a display panel according to an embodiment of the present disclosure can minimize the deterioration of brightness due to the improved light extraction efficiency through the touch protection film while including a touch sensor. Therefore, the display quality of the organic light-emitting diode display device can be improved, and its power consumption can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An organic light-emitting display device according to an embodiment of the present disclosure is shown.

[0021] Figure 2 Shows Figure 1 the display panel of.

[0022] Figure 3 Shows Figure 2 an example of the top surface of the touch sensor of.

[0023] Figure 4 Shows a cross-section taken along the line I-I' in Figure 3 as an example. DETAILED DESCRIPTION

[0024] For simplicity and clarity of illustration, the elements in the drawings are not necessarily drawn to scale. The same reference numerals in different drawings represent the same or similar elements and thus perform similar functions. In addition, for simplicity of description, the description and details of known steps and elements are omitted. Furthermore, in the following detailed description of the present disclosure, many specific details are set forth in order to provide a thorough understanding of the present disclosure. However, it will be understood that the present disclosure may be practiced without these specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present disclosure.

[0025] Examples of various embodiments are described and illustrated below. It is understood that the description herein is not intended to limit the claims to the specific embodiments described. Rather, it is intended to cover alternatives, modifications, and equivalents that may be included within the spirit and scope of the disclosure as defined by the appended claims.

[0026] The terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the disclosure. As used herein, the singular forms "a" and "an" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, it is to be understood that the terms "comprises," "comprising," "includes," and "including" when used in this specification refer to the presence of the stated features, integers, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Expressions such as "at least one," when preceding a list of elements, can modify the entire list of elements and not just the individual elements of the list.

[0027] It is understood that although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections are not limited by these terms. These terms are used to distinguish one element, component, region, layer, or section from another. Thus, a first element, component, region, layer, or section described below may be termed a second element, component, region, layer, or section without departing from the spirit and scope of the disclosure.

[0028] In addition, it is also understood that when a first element or layer is referred to as being on top of a second element or layer, the first element can be placed directly on the second element or can be placed indirectly on the second element with a third element or layer disposed therebetween. It is understood that when an element or layer is referred to as "connected to" or "coupled to" another element or layer, it can be directly connected to or coupled to the other element or layer, or there can be one or more intervening elements or layers. Further, it is also understood that when an element or layer is referred to as being between two elements or layers, it can be the only element or layer between the two elements or layers, or there can be one or more intervening elements or layers.

[0029] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this inventive concept belongs. It will also be understood that terms, such as those defined in commonly used dictionaries, should be understood as having a meaning that is consistent with their meaning in the context of the relevant art and will not be understood in an idealized or overly formal sense unless expressly so defined herein.

[0030] Hereinafter, a display panel and an organic light emitting display device including the display panel according to embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0031] Figure 1 An organic light emitting display device according to an embodiment of the present disclosure is shown. Figure 2 Shows Figure 1 the display panel of Figure 3 Shows Figure 2 an example of the top surface of the touch sensor of Figure 4 Shows a cross-section taken along the line I-I' in Figure 3 an example of

[0032] As Figure 1 shown, an organic light emitting display device 10 according to an embodiment of the present disclosure includes a display panel 100, the display panel 100 includes a display area AA in which an image is displayed, and a circuit board 200 connected to the display panel 100, the circuit board 200 being configured to provide control signals and power to drive the display panel 100.

[0033] The display panel 100 further includes a pad region, which is located in a part of the non-display region outside the display area AA. The circuit board 200 is connected to the pad region.

[0034] As Figure 2 shown, the display panel 100 includes a light emitting element array 110, an encapsulation film 120 covering the light emitting element array 110, a touch sensor 130 located above the encapsulation film 120, a touch protection film 140 covering the touch sensor 130 and including a material containing core-shell structure particles CS, and a polarizing film 150 located above the touch protection film 140.

[0035] The light emitting element array 110 includes a plurality of light emitting elements organic light emitting diodes OLEDs, which correspond to a plurality of pixel regions PA arranged in the display area AA.

[0036] The light emitting element array 110 may further include at least one thin film transistor DT and ST, the at least one thin film transistor DT and ST corresponding to each pixel region PA and providing a driving current for each light emitting element OLED.

[0037] In one example, each pixel region PA of the light-emitting element array 110 includes: an organic light-emitting diode OLED; a driving transistor DT connected in series with the organic light-emitting diode OLED, where DT and OLED are disposed between a first driving power supply line VDD and a second driving power supply line VSS; and a switching transistor ST disposed between the gate of the driving transistor DT and a data line DL. Each pixel region PA may further include a storage capacitor Cst disposed between the gate of the driving transistor DT and the anode of the organic light-emitting diode OLED.

[0038] When the switching transistor ST is turned on based on the scan signal of the scan line SL, the switching transistor ST transfers the data signal from the data line DL to the gate of the driving transistor DT and the storage capacitor Cst. In this regard, when the driving transistor DT is turned on based on the output of the switching transistor ST and the charging voltage of the storage capacitor Cst, the organic light-emitting diode OLED is supplied with a driving current.

[0039] The pixel regions PA may respectively correspond to red R, green G, and blue B. Alternatively, the pixel regions PA may respectively correspond to red R, green G, blue B, and white W. To this end, each organic light-emitting diode OLED of the light-emitting element array 110 may be configured to emit light corresponding to the respective color. Alternatively, a plurality of organic light-emitting diodes OLED included in the light-emitting element array 110 may be configured to emit the same color. In this case, the display panel 100 further includes a color filter array (not shown) for presenting the color corresponding to each pixel region PA.

[0040] The organic light-emitting diode (OLED) may be prone to deterioration due to moisture or oxygen. Therefore, in order to delay the deterioration of the organic light-emitting diode (OLED), it is necessary to prevent moisture or oxygen from penetrating into the organic light-emitting diode (OLED). Therefore, the display panel 100 includes a packaging film 120 covering the light-emitting element array 110.

[0041] The packaging film 120 may have a structure in which at least two insulating films of different compositions or different thicknesses are vertically stacked.

[0042] The touch sensor 130 is disposed above the packaging film 120. The touch sensor 130 includes a first touch electrode 131 and a second touch electrode 132 extending in a mutually crossing direction.

[0043] When a touch occurs in a specific region of the display area AA, the capacitance Cm between adjacent first touch electrodes 131 and second touch electrodes 132 in the touch sensor 130 changes. Therefore, the specific region where the touch occurs can be detected based on the change in the capacitance Cm.

[0044] The display panel 100 includes a touch protection film 140 covering the touch sensor 130 to protect the touch sensor 130 from external electrical or physical impacts.

[0045] According to an embodiment of the present disclosure, the touch protection film 140 includes a material containing core-shell structure particles CS to improve the light extraction efficiency of the display panel 100. The core-shell structure particles CS will be described in detail below with reference to Figure 4 the description of the core-shell structure particles CS.

[0046] A polarizing film 150 is disposed above the touch protection film 140. In this regard, the polarizing film 150 is for preventing reflection of external light. To facilitate fixing the polarizing film 150 to the film 140, the touch protection film 140 may include an adhesive material.

[0047] Referring to Figure 3 , the touch sensor 130 includes a plurality of first touch electrodes 131 each extending in a first direction ( Figure 3 the left-right direction in Figure 3 ) and a plurality of second touch electrodes 132 each extending in a second direction perpendicular to the first direction. That is, the second direction is the

[0048] up-down direction in

[0049] Each first touch electrode 131 includes a plurality of first electrode patterns 131e arranged in the first direction and a plurality of first bridges 131b, and each first bridge 131b connects the first electrode patterns 131e adjacent to each other in the first direction.

[0050] Each second touch electrode 132 includes a plurality of second electrode patterns 132e arranged in the second direction and a plurality of second bridges 132b, and each second bridge 132b connects the second electrode patterns 132e adjacent to each other in the second direction.

[0051] In this regard, the first bridges 131b may be disposed in the same layer as the first electrode patterns 131e. The second bridges 132b may be disposed in a layer different from the second electrode patterns 132e. In this case, the second bridges 132b may be connected to the second electrode patterns 132e through contact holes 132h passing through an insulating film between the second bridges 132b and the second electrode patterns 132e.

[0052] The first touch link can be located in the same layer as the second bridge 132b. In this case, the first touch link can be connected to the first touch electrode 131 via a contact hole.

[0053] Each of the plurality of second touch electrodes 132 can be connected to the second touch electrode pad 132p via a second touch link provided outside the display area AA.

[0054] In this regard, like the first touch electrode pad 131p, the second touch electrode pad 132p can be provided in a pad area adjacent to a corner of the display area AA and outside the display area AA.

[0055] The second touch link can be located in the same layer as the second bridge 132b. In this case, the second touch link can be connected to the second touch electrode 132 via a contact hole.

[0056] As Figure 4 As shown, the display panel 100 according to an embodiment of the present disclosure includes: a light-emitting element array 110, the light-emitting array 110 including a plurality of organic light-emitting diodes (OLEDs) respectively corresponding to a plurality of pixel regions PA in the display area AA; a packaging film 120 covering the light-emitting element array 110; a touch sensor 130 provided above the packaging film 120; and a touch protection film 140 covering the touch sensor 130 and including a material containing core-shell structure particles CS.

[0057] The display panel 100 may further include a polarizing film 150, the polarizing film 150 being provided above the touch protection film 140 and corresponding to the display area AA.

[0058] The light-emitting element array 110 includes a driving transistor DT and an organic light-emitting diode OLED corresponding to each pixel region PA.

[0059] The driving transistor DT may include: a gate electrode GE provided above the substrate 101; an active layer ACT provided above a gate insulating film 111 covering the gate electrode GE; and a source electrode SE and a drain electrode DE provided above a first interlayer insulating film 112 covering the active layer.

[0060] In this regard, the active layer ACT may include an oxide semiconductor. The active layer ACT may include a channel region overlapping with the gate electrode GE, and a source region and a drain region respectively provided on both sides of the channel region.

[0061] The source electrode SE is connected to the source region of the active layer ACT via a contact hole passing through the first interlayer insulating film 112.

[0062] The drain electrode DE is connected to the drain region of the active layer ACT via a contact hole passing through the first interlayer insulating film 112.

[0063] The driving transistor DT is covered with a second interlayer insulating film 113.

[0064] Although the driving transistor DT is shown in Figure 4 as having a bottom gate structure, embodiments of the present disclosure are not limited thereto. The driving transistor DT may have a top gate structure or a double gate structure. In addition, the driving transistor DT may include an active layer containing low-temperature polycrystalline silicon (LTPS) instead of the active layer ACT containing an oxide semiconductor.

[0065] The organic light-emitting diode OLED includes an anode AE provided above the second interlayer insulating film 113; a cathode CE opposite to the anode AE, and a light-emitting structure EL provided between the anode AE and the cathode CE.

[0066] The edge of the anode AE may be covered with a bank insulating film 114.

[0067] The light-emitting structure EL may include an organic light-emitting material. In this case, the light-emitting structure EL may include a hole transport layer, a light-emitting layer, and an electron transport layer stacked in sequence. In this regard, the hole transport layer is adjacent to the anode AE. The electron transport layer is adjacent to the cathode CE. Alternatively, the light-emitting structure EL may further include at least one hole injection layer provided between the hole transport layer and the anode AE and an electron injection layer provided between the electron transport layer and the cathode CE.

[0068] The light-emitting element array 110 may be covered with a packaging film 120 to prevent moisture or oxygen from penetrating therein.

[0069] The packaging film 120 may have a structure in which a plurality of insulating films having different compositions or different thicknesses are vertically stacked.

[0070] In one example, the packaging film 120 may include a stack of a first packaging film 121, a second packaging film 122, and a third packaging film 123, wherein the first packaging film 121 includes an inorganic insulating material and covers the light-emitting element array 110, the second packaging film 122 includes an organic insulating material and is provided above the first packaging film 121, and the third packaging film 123 includes an inorganic insulating material and is provided above the second packaging film 122.

[0071] In addition, the display panel 100 may further include a dam structure 160 provided between the display area AA and the pad area.

[0072] The dam structure 160 may prevent the encapsulation film 120 from collapsing at a region where the encapsulation film 120 contacts the substrate 101. For example, the dam structure 160 may include a stack of a first dam layer formed of the same layer as the second interlayer insulating film 113 and a second dam layer formed of the same layer as the bank insulating film 114.

[0073] The touch sensor 130 includes a touch buffer film 133 disposed over the packaging film 120 and a touch interlayer insulating film 134 disposed over the touch buffer film 133 .

[0074] As mentioned above Figure 3 As described above, the touch sensor 130 includes a plurality of first touch electrodes 131 and a plurality of second touch electrodes 132. Each of the first touch electrodes 131 includes a plurality of first electrode patterns 131e and a first bridge 131b, each of which connects the first electrode patterns 131e adjacent to each other in the first direction. Each of the second touch electrodes 132 includes a plurality of second electrode patterns 132e and a second bridge 132b, each of which connects the second electrode patterns 132e adjacent to each other in the second direction.

[0075] like Figure 4 As shown, the first and second electrode patterns 131 e and 132 e and the first bridge 131 b may be disposed above the touch interlayer insulating film 134 .

[0076] The second bridge 132b may be disposed above the touch buffer film 133. In this regard, the second bridge 132b is covered with the touch interlayer insulating film 134 and connected to the second electrode pattern 132e via a contact hole 132h passing through the touch interlayer insulating film 134.

[0077] Therefore, the touch sensor 130 includes: a touch interlayer insulating film 134 arranged above the packaging film 120; a first touch electrode 131, including a plurality of first electrode patterns 131e arranged above the touch interlayer insulating film 134 and arranged in a first direction, and a first bridge 131b, each first bridge 131b connecting the first electrode patterns 131e adjacent to each other in the first direction; and a second touch electrode 132, including a plurality of second electrode patterns 132e arranged on the touch interlayer insulating film 134 and arranged in a second direction intersecting the first direction, and a second bridge 132b, each second bridge 132b connecting the second electrode patterns 132e adjacent to each other in the second direction.

[0078] In this regard, the first bridge 131b may be disposed above the touch interlayer insulating film 134. The second bridge 132b may be disposed above the encapsulation film 120 and covered by the touch interlayer insulating film 134. In one example, the second bridge 132b may be disposed above the touch buffer film 133. The second bridge 132b is connected to the second electrode pattern 132e through a contact hole 132h passing through the touch interlayer insulating film 134.

[0079] The touch sensor 130 is covered with a touch protection film 140.

[0080] The touch protection film 140 at least corresponds to the display area AA and covers the touch sensor 130. The touch protection film 140 includes a material containing core-shell structure particles CS.

[0081] The touch protection film 140 may have a thickness of 2 μm.

[0082] Each core-shell structure particle CS includes a core CCS and a shell BCS. The core CCS contains a metal oxide, and the shell BCS contains a molecular sieve surrounding the core CCS. The diameter of each core-shell structure particle CS may be 4 nm to 6 nm.

[0083] In one example, the metal oxide of the core CCS may include an oxide containing titanium (Ti) or iron (Fe).

[0084] The molecular sieve of the shell BCS may include MCM-41 or SBA-15. In this regard, the molecular sieve has a hexagonal columnar structure.

[0085] In particular, when the shell BCS of each core-shell structure particle CS contains an MCM material, the volume of the touch protection film 140 increases, so the packaging density of the touch protection film 140 may decrease.

[0086] In this regard, the MCM material may be Si-MCM-41 that can be synthesized by a hydrothermal process, where sodium metasilicate is used as a silica introducing material and cetyltrimethylammonium bromide is used as a surfactant.

[0087] The core-shell structure particles CS can be prepared by allowing the synthesized Si-MCM-41 to carry titanium oxide as a metal oxide. In this regard, the pore size of each core-shell structure particle CS can be controlled by treating tetraethoxysilane.

[0088] In addition, the touch protection film 140 may further include at least one adhesive and a photosensitizer. Due to the at least one adhesive, the touch protection film 140 can have adhesiveness.

[0089] In this regard, the adhesive may include at least one of an alkali-developable adhesive and a silicon-based adhesive. In particular, the adhesive may include a silicone polymer. Since the material of the touch protection film 140 includes an adhesive containing a silicone polymer, it has the advantage that its heat resistance is higher than that of an acrylic polymer which is a conventional material for the protection film. In addition, since the Si-O bond of the silicone polymer has a higher bond energy, the bond length of the Si-O bond is longer than that of the C-C bond of the acrylic polymer. Therefore, the touch protection film 140 becomes bulkier, and the packaging density of the touch protection film 140 may be reduced.

[0090] The photosensitizer may include an oxime-based compound or a benzophenone-based compound. In particular, the photosensitizer may include a benzophenone-based compound.

[0091] In one example, the configuration of the touch protection film 140 may include: preparing a liquid material by mixing core-shell structure particles CS, an alkali-developable adhesive or a silicon-based adhesive, a photosensitizer including an oxime-based compound or a benzophenone-based compound, and a predetermined solvent; applying the liquid material to the touch sensor 130; and photocuring the liquid material on the touch sensor 130. In this regard, the solvent may be used to dissolve the resin and may be PGMEA (propylene glycol methyl ether acetate). During the photocuring process of the liquid material, the firing temperature may be lower than 100 °C, especially lower than 85 °C. Limiting the firing temperature of the touch protection film 140 to below 100 °C can minimize the damage of the deposition process of the touch protection film 140 to the light-emitting element 110. In this regard, since the low-temperature process is carried out at a firing temperature below 100 °C, the adhesion of the touch protection film 140 may deteriorate accordingly. To prevent such deterioration, the process of depositing the touch protection film 140 may further include a process of exposing the entire surface of the photocurable material, which is after the process of photocuring the liquid material. This entire surface exposure process can improve the adhesion strength and curability of the touch protection film 140.

[0092] Therefore, since the touch protection film 140 includes a material containing core-shell structure particles CS, the light emitted from the light-emitting element array 110 can pass through the molecular sieve of the shell BCS having a hexagonal columnar structure, making the light have stronger straightness. Since the metal oxide of the core CCS has a relatively high refractive index, the light transmittance of the touch protection film 140 can be improved. In one example, the refractive index of the metal oxide may be in the range of 2.6 to 2.9.

[0093] Therefore, since the touch protection film 140 contains core-shell structure particles CS, the light extraction rate (i.e., the light extraction rate) of the light emitted from the light-emitting element array 110 to the outside can be improved.

[0094] Therefore, the combination of placing the touch sensor 130 in the path of the light emitted externally by the light-emitting element array 110 and disposing the touch protection film 140 including the core-shell structure particles CS on the touch sensor 130 can further improve the light extraction efficiency. Accordingly, the brightness reduction caused by the touch sensor 130 can be minimized. Accordingly, the display quality of the display panel 100 can be improved and the power consumption can be reduced.

[0095] The polarizing film 150 is disposed above the touch protection film 140. In this regard, since the touch protection film 140 has adhesiveness based on an adhesive, the adhesive layer between the touch protection film 140 and the polarizing film 150 can be removed. Accordingly, the display panel 100 can be advantageously simplified and thinned.

[0096] As described above, according to one embodiment of the present disclosure, since the touch protection film 140 covering the touch sensor 130 includes a material including the core-shell structure particles CS, the light extraction efficiency can be improved. Accordingly, the display quality can be improved and the power consumption can be reduced.

[0097] The above-described present disclosure is not limited to the above embodiments and drawings. It will be apparent to those skilled in the art to which the present disclosure pertains that various changes, substitutions, and alterations can be easily made without departing from the spirit and scope of the present disclosure.

Claims

1. A display panel, comprising: An array of light-emitting elements, the array of light-emitting elements including a plurality of light-emitting elements respectively corresponding to a plurality of pixel regions arranged in a display area; A packaging film covering the array of light-emitting elements; A touch sensor disposed on the packaging film; A polarizing film disposed above the touch sensor; And A touch protection film disposed between the polarizing film and the touch sensor and covering the touch sensor, Wherein, the touch sensor includes: A touch buffer film disposed on the packaging film; A touch interlayer insulating film disposed on the touch buffer film; A plurality of first touch electrodes extending in a first direction; and A plurality of second touch electrodes extending in a second direction perpendicular to the first direction, wherein each of the plurality of first touch electrodes is connected to a first touch electrode pad via a first touch link disposed outside the display area, Wherein, each of the plurality of second touch electrodes is connected to a second touch electrode pad via a second touch link disposed outside the display area, Wherein, the touch protection film includes a material containing light-transmitting core-shell structure particles, wherein the light-transmitting core-shell structure particles include a core and a shell, the shell includes a molecular sieve having pores, and the shell surrounds the core, Wherein, the polarizing film is in direct contact with the top surface of the touch protection film, and Wherein, the core includes a metal oxide having a refractive index of 2.6 to 2.9, and the molecular sieve of the shell has a hexagonal columnar structure.

2. The display panel according to claim 1, wherein, The metal oxide includes an oxide containing Ti or Fe, wherein the molecular sieve includes MCM-41 or SBA-15.

3. The display panel according to claim 1, wherein, The material of the touch protection film includes at least one adhesive and a photosensitizer, wherein the touch protection film has adhesiveness due to the at least one adhesive.

4. The display panel according to claim 3, wherein, The at least one adhesive includes at least one of an alkali-developable adhesive and a silicon-based adhesive, wherein the photosensitizer includes an oxime compound or a benzophenone compound.

5. The display panel according to claim 1, Among them, The polarizing film is disposed corresponding to the display area.

6. The display panel according to claim 1, wherein, Each of the plurality of first touch electrodes includes: A plurality of first electrode patterns disposed above the touch interlayer insulating film and arranged in the first direction; and A plurality of first bridges, each first bridge connecting the first electrode patterns adjacent to each other in the first direction, Wherein, the plurality of first bridges are disposed above the touch interlayer insulating film.

7. The display panel according to claim 6, wherein, Each of the plurality of second touch electrodes includes: A plurality of second electrode patterns disposed above the touch interlayer insulating film, spaced apart from the plurality of first electrode patterns, and arranged in the second direction; and A plurality of second bridges, each second bridge connecting the second electrode patterns adjacent to each other in the second direction, Wherein, the plurality of second bridges are disposed above the packaging film and covered by the touch interlayer insulating film, and Wherein, the plurality of second bridges are connected to the plurality of second electrode patterns via contact holes passing through the touch interlayer insulating film.

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