Organic light emitting display device

By placing an anti-static layer between the protective film of the flexible organic light emitting display device and the adhesive component, the damage problem of substrate and organic light emitting components caused by static electricity is solved, and the performance of electrostatic protection and adhesive component is improved.

CN113078186BActive Publication Date: 2025-03-18SAMSUNG DISPLAY CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202011174982.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-01-03
Filing Date
2020-10-28
Publication Date
2025-03-18
Estimated Expiration
2040-10-28

AI Technical Summary

Technical Problem

During the production process of flexible organic light emitting display devices, static electricity may occur when removing the release film, resulting in changes in transistor characteristics of the substrate or damage to the organic light emitting element.

Method used

A first anti-charge layer is arranged between the protective film and the adhesive member, formed of a first compound to prevent static electricity generation or transmission, and a second anti-charge layer is arranged on the bottom surface of the protective film to further enhance the anti-static function.

Benefits of technology

Effectively prevent static electricity from being generated or transmitted on the display panel, protecting the substrate and organic light-emitting elements, and meeting the flexibility, durability and adhesion requirements of the adhesive components.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN113078186B_ABST
    Figure CN113078186B_ABST
Patent Text Reader

Abstract

An organic light-emitting display device includes: a substrate including a display area and a folding area located locally in the display area; a display structure arranged on the upper surface of the substrate; a protective film arranged on the bottom surface of the substrate so as to overlap with the folding area; an adhesive component arranged between the protective film and the substrate to bond the protective film and the substrate; a first anti-charge layer arranged between the protective film and the adhesive component and formed of a first compound; a second anti-charge layer arranged on the bottom surface of the protective film and formed of a second compound; and a supporting component arranged on the bottom surface of the second anti-charge layer and including an opening that overlaps with the folding area.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to an organic light emitting display device. More specifically, the present invention relates to an organic light emitting display device including a protective film. Background Art

[0002] An organic light emitting display device may include an organic light emitting element that emits light by itself. Thus, the organic light emitting display device may be implemented to be thinner than a liquid crystal display device. As the organic light emitting display device may be implemented to be relatively thin, an organic light emitting display device having flexible characteristics is being developed.

[0003] The flexible organic light-emitting display device may include a protective film for supporting a flexible substrate. In order to bond the protective film and the substrate, after bonding the bottom surface of the bonding component to the top surface of the protective film, the release film located on the top surface of the bonding component is removed and bonded to the bottom surface of the substrate. On the other hand, static electricity may be generated during the removal of the release film. In the case where the static electricity is transmitted to the substrate, the characteristics of the transistor formed on the substrate may change (for example, the threshold voltage of the transistor shifts), and the organic light-emitting element configured on the substrate may be damaged. Summary of the invention

[0004] An object of the present invention is to provide an organic light emitting display device including a protective film.

[0005] However, the purpose of the present invention is not limited to the above-mentioned purpose, and various extensions can be made without departing from the concept and scope of the present invention.

[0006] In order to achieve the purpose of the present invention, the organic light-emitting display device according to an embodiment of the present invention includes: a substrate, including a display area and a folding area located locally in the display area; a display structure, arranged on the upper surface of the substrate; a protective film, arranged on the bottom surface of the substrate overlapping with the folding area; an adhesive component, arranged between the protective film and the substrate to bond the protective film and the substrate; a first anti-charge layer, arranged between the protective film and the adhesive component, and formed by a first compound; a second anti-charge layer, arranged on the bottom surface of the protective film, and formed by a second compound; and a supporting component, arranged on the bottom surface of the second anti-charge layer, and including an opening overlapping with the folding area.

[0007] According to an embodiment, the first anti-static layer and the second anti-static layer may overlap the folding area respectively.

[0008] According to an embodiment, the adhesive component may overlap the folding area.

[0009] According to an embodiment, the bottom surface of the first antistatic layer may be in direct contact with the protective film, and the top surface of the first antistatic layer may be in direct contact with the adhesive component.

[0010] According to an embodiment, the adhesive member may be in direct contact with the substrate.

[0011] According to an embodiment, the second compound may be the same as the first compound.

[0012] According to an embodiment, the adhesive member may be a pressure sensitive adhesive including an acrylate compound.

[0013] According to an embodiment, the protection film may include polyimide.

[0014] According to an embodiment, the first compound may include PEDOT:PSS (poly(3,4-ethylenedioxythiophene)poly(styrene sulfonate)), a urethane compound, and isocyanate.

[0015] According to an embodiment, the substrate may include polyimide.

[0016] According to an embodiment, the organic light emitting display device may further include a buffer component disposed between the second antistatic layer and the supporting component.

[0017] According to an embodiment, the buffer component may include at least one selected from acrylic resin, polyurethane, thermoplastic polyurethane, latex, polyurethane foam, and polystyrene foam.

[0018] According to an embodiment, the supporting member may include a metal substance.

[0019] (Effects of the Invention)

[0020] In the organic light emitting display device according to the embodiment of the present invention, the substrate disposed in the folding region can be supported as a whole by the protective film overlapping the folding region, which can prevent the shape of the substrate from being deformed in the folding region.

[0021] In addition, the organic light emitting display device includes an antistatic layer disposed between the protective film and the adhesive component, thereby preventing static electricity from being generated or transmitting static electricity to the display panel. Furthermore, no antistatic material is added separately to the adhesive component, so that the adhesive component can meet the characteristics of flexibility, durability, adhesion, etc.

[0022] However, the effects of the present invention are not limited to the above-mentioned effects, and various extensions can be made without departing from the concept and scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a top view showing an organic light emitting display device according to an embodiment of the present invention.

[0024] Figure 2 It is shown Figure 1 A side view of the folded shape of an organic light-emitting display device.

[0025] Figure 3 It is used to illustrate and Figure 1 A block diagram of an organic light emitting display device electrically connected to an external device.

[0026] Figure 4 Yes Figure 1 A cross-sectional view of an organic light emitting display device taken along line II'.

[0027] Figure 5 It is shown that the Figure 1 A cross-sectional view of a display panel in an organic light-emitting display device.

[0028] (Explanation of Reference Numerals)

[0029] 1000: organic light emitting display device 2000: external device

[0030] PNL: Display panel 10: Display area

[0031] 20: Folding area 30: Bending area

[0032] 40: Pad area S1: top

[0033] S2: Bottom 200: Display structure

[0034] 410: first antistatic layer 430: second antistatic layer

[0035] 300: Protective film

[0036] 510: first adhesive member 530: second adhesive member DETAILED DESCRIPTION

[0037] Hereinafter, 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 components in the drawings, and repeated descriptions of the same components are omitted.

[0038] Figure 1 is a top view showing an organic light emitting display device according to an embodiment of the present invention, Figure 2 It is shown Figure 1 A side view of the folded shape of the organic light emitting display device. Figure 3 It is used to illustrate and Figure 1 A block diagram of an organic light emitting display device electrically connected to an external device.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The organic light emitting display device 1000 can be divided into a display area 10 , a bending area 30 and a pad area 40 .

[0040] A display panel PNL may be disposed in the display region 10, and an image may be displayed in the display region 10 through the display panel PNL. For example, the display panel PNL may include an upper surface S1 on which the image is displayed and a bottom surface S2 opposite to the upper surface S1.

[0041] The display region 10 may include a folding region 20. In other words, the folding region 20 may be located in a part of the display region 10. That is, the display panel PNL may be configured in the folding region 20, and the image may be displayed in the folding region 20 through the display panel PNL. On the other hand, the folding region 20 may be a region where the organic light-emitting display device 1000 is folded or unfolded. For example, when the folding region 20 is not folded, as shown in FIG. Figure 1 As shown, the organic light emitting display device 1000 is unfolded, so that the upper surface S1 of the display panel PNL located in the folding area 20 is exposed to the user, and the user can watch and listen to the image. Alternatively, when the folding area 20 is folded, as shown in FIG. Figure 2 As shown, the organic light emitting display device 1000 is folded, so that a user can conveniently carry the organic light emitting display device 1000 .

[0042] The bending area 30 is bent so that the pad area 40 can be located at a position overlapping with the display area 10. A pad electrode electrically connected to the external device 2000 generating a signal can be configured in the pad area 40, and a connection electrode electrically connecting the pad electrode and the display panel PNL can be configured in the bending area 30. Thus, the signal generated from the external device 2000 can be provided to the display panel PNL through the pad electrode and the connection electrode.

[0043] Figure 4 Yes Figure 1 A cross-sectional view of an organic light emitting display device taken along line II', Figure 5 It is shown that the Figure 1 A cross-sectional view of a display panel in an organic light-emitting display device.

[0044] Reference Figure 1 as well as Figure 4The organic light emitting display device 1000 may include a display panel PNL, a protective film 300, a first anti-static layer 410, a second anti-static layer 430, a first adhesive member 510, a second adhesive member 530, a buffer member 600, a support member 700, a bracket 800, and a window member WIN.

[0045] Reference Figure 5 The display panel PNL may include a substrate 100, a buffer layer 110, and a display structure 200. The display structure 200 may include an active pattern 210, a first insulating layer 211, a gate electrode 220, a second insulating layer 221, a source electrode 231, a drain electrode 232, a via insulating layer 230, a first electrode 241, a light emitting layer 242, a second electrode 243, a pixel defining film 250, a first inorganic layer 261, an organic layer 262, and a second inorganic layer 263.

[0046] The substrate 100 may include glass, quartz, plastic, etc. For example, the substrate 100 may be a plastic substrate for realizing a flexible display device, and may include polyimide (PI). In one embodiment, the substrate 100 may have a structure in which one or more polyimide layers and one or more barrier layers are alternately stacked.

[0047] The buffer layer 110 may be disposed on the substrate 100. The buffer layer 110 may prevent metal atoms or impurities from diffusing from the substrate 100 to the active pattern 210. In one embodiment, the organic light emitting display device 1000 may include at least two buffer layers. In other embodiments, the organic light emitting display device 1000 may not include a buffer layer.

[0048] The active pattern 210 may be disposed on the buffer layer 110. The active pattern 210 may include a silicon semiconductor, a metal oxide semiconductor, etc. The first insulating layer 211 may include an insulating material and cover the active pattern 210. The gate electrode 220 may include a metal, an alloy, a conductive metal oxide, etc. and is disposed on the first insulating layer 211. The second insulating layer 221 may include an insulating material and cover the gate electrode 220. The source electrode 231 and the drain electrode 232 may include a metal, an alloy, a conductive metal oxide, etc. and are disposed on the second insulating layer 221. The via insulating layer 230 may cover the source electrode 231 and the drain electrode 232, include an organic insulating material, and have a substantially flat upper surface.

[0049] On the other hand, the active pattern 210 , the gate electrode 220 , the source electrode 231 , and the drain electrode 232 may define a transistor TR. The transistor TR may be controlled by a gate signal (or a scan signal) provided to the gate electrode 220 , thereby outputting a voltage (or a signal) input to the source electrode 231 to the drain electrode 232 .

[0050] The first electrode 241 may be disposed on the via insulating layer 230. The first electrode 241 may receive a first voltage provided from the drain electrode 232. The pixel defining film 250 may be disposed on the via insulating layer 230 and include an opening that partially exposes the upper surface of the first electrode 241. The light emitting layer 242 may be disposed on the first electrode 241 at the opening. The second electrode 243 may be disposed on the light emitting layer 242 and receive a second voltage.

[0051] On the other hand, light can be emitted from the light emitting layer 242 due to the voltage difference between the first voltage and the second voltage, so that the first electrode 241 , the light emitting layer 242 and the second electrode 243 can be defined as an organic light emitting element.

[0052] The thin film encapsulation layer may be disposed on the second electrode 243. In order to prevent moisture and oxygen from penetrating from the outside, the thin film encapsulation layer may have a structure in which a first inorganic layer 261, an organic layer 262, and a second inorganic layer 263 are alternately stacked.

[0053] Refer to Figure 4 The protective film 300 may be disposed on the bottom surface of the substrate 100. The protective film 300 may prevent moisture and oxygen from penetrating from the outside and absorb external impact. As mentioned above, in order to realize a flexible display device, the substrate 100 may be a flexible plastic substrate, and the protective film 300 may support the flexible substrate 100.

[0054] The protective film 300 may overlap the display area 10 as a whole. In other words, the protective film 300 may overlap the folding area 20, so that the protective film 300 may support the substrate 100 overlapping the folding area 20. Therefore, the substrate 100 may be supported as a whole by the protective film 300, and the shape of the substrate 100 may be prevented from being deformed in the folding area 20. For example, the protective film 300 may prevent the substrate 100 overlapping the folding area 20 from sagging in the folding area 20. At the same time, when the substrate 100 overlapping the folding area 20 is deformed or subjected to external force, the protective film 300 may absorb the impact and prevent the display panel PNL from being damaged.

[0055] On the other hand, the protective film 300 may be a plastic film. For example, the protective film 300 may include polyethersulfone (PS), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyphenylenesulfide (PPS), polyarylate, polycarbonate (PC), poly(arylene ether sulfone), polyethylene terephthalate (PET), polyimide (PI), etc.

[0056] The first adhesive component 510 may be disposed between the protective film 300 and the substrate 100, so as to bond the protective film 300 and the substrate 100. In one embodiment, the bottom surface of the first adhesive component 510 may directly contact the first antistatic layer 410 coated on the protective film 300, and the top surface of the first adhesive component 510 may directly contact the substrate 100.

[0057] In one embodiment, in order to make the protective film 300 overlapping the folding region 20 adhere to the substrate 100 overlapping the folding region 20, the first adhesive member 510 may overlap the folding region 20. In this case, in order for the organic light-emitting display device 1000 to repeatedly perform folding and unfolding, the first adhesive member 510 is required to be flexible. Furthermore, in order to prevent the shapes of the substrate 100 and the protective film 300 from being deformed even if the folding and unfolding of the organic light-emitting display device 1000 are repeated, the first adhesive member 510 is required to have durability and adhesiveness.

[0058] In one embodiment, the first adhesive component 510 may be an organic adhesive component. For example, the first adhesive component 510 may be an optically clear adhesive (OCA), an optically clear resin (OCR), a pressure sensitive adhesive (PSA), etc. In one embodiment, the first adhesive component 510 may be a pressure sensitive adhesive including an acrylate compound, a urethane compound, a silicon compound, etc.

[0059] On the other hand, the organic light emitting display device 1000 may have a defect caused by static electricity. To prevent this, a structure that performs an anti-static function is required between the substrate 100 and the protective film 300 of the organic light emitting display device 1000 .

[0060] Specifically, in order to manufacture the organic light-emitting display device 1000, the first adhesive component 510 may be provided as an adhesive sheet having an upper release film and a lower release film attached to both sides. Furthermore, after the first adhesive component 510 with the lower release film of the adhesive sheet removed is attached to the protective film 300, the first adhesive component 510 with the upper release film removed is attached to the substrate 100.

[0061] However, static electricity may be generated due to peeling charge generated when the release film is removed from the first adhesive member 510. Due to the static electricity, foreign matter may be attached to the surface of the first adhesive member 510. In addition, when the static electricity is transmitted to the display panel PNL, the characteristics of the transistor TR may change (for example, the threshold voltage of the transistor TR may shift, etc.), or the first electrode 241 and the second electrode 243 may be damaged, and the display panel PNL may be damaged.

[0062] In order to prevent this, antistatic substances have been added to the first adhesive component 510 in the past. However, in order for the first adhesive component 510 to satisfy the above-mentioned properties such as flexibility, durability, and adhesion, it is necessary to limit the addition of other substances that are not adhesive substances. For example, when antistatic substances are added to the first adhesive component 510 including an adhesive substance in order to make the first adhesive component 510 perform both the adhesive function and the antistatic function, the first adhesive component 510 may not satisfy the above-mentioned properties such as flexibility, durability, and adhesion.

[0063] The organic light emitting display device 1000 according to the embodiment of the present invention may include a first anti-static layer 410 disposed between the protective film 300 and the first adhesive component 510. The first anti-static layer 410 includes an anti-static substance, so that the static electricity can be prevented from being generated or the static electricity is not transmitted to the display panel PNL. In addition, no anti-static substance is added separately to the first adhesive component 510, so that the first adhesive component 510 can meet the above-mentioned characteristics such as flexibility, durability, and adhesion.

[0064] The first antistatic layer 410 can be disposed on the protective film 300 by coating, printing, etc. For example, the first antistatic layer 410 can be coated on the protective film 300 by roll-to-roll coating, spray coating, slit coating, etc.

[0065] In one embodiment, the bottom surface of the first anti-static layer 410 may be in direct contact with the protective film 300 , and the top surface of the first anti-static layer 410 may be in direct contact with the first adhesive member 510 .

[0066] The first antistatic layer 410 may be formed of a first compound. In one embodiment, the first compound may include PEDOT:PSS (poly(3,4-ethylenedioxythiophene)poly(styrene sulfonate), urethane compounds, and isocyanate.

[0067] On the other hand, in order to improve the coating property of the first adhesive member 510 disposed on the first antistatic layer 410, the surface energy difference between the protective film 300, the first antistatic layer 410 and the first adhesive member 510 should be considered. Here, the surface energy means the sum of dispersive energy and polar energy.

[0068] In particular, as described above, the materials of the first adhesive component 510 that satisfy the characteristics of flexibility, durability, adhesion, etc. are limited, so the surface energy value of the first antistatic layer 410 coated on the protective film 300 should be above a certain level. Furthermore, even if the surface energy value of the first antistatic layer 410 is greater than a certain value, when the polarity value of the first antistatic layer 410 is less than a certain value (for example, approximately 12 mN / m), the coating property of the first adhesive component 510 may be reduced.

[0069] Table 1 is a table showing changes in surface energy, polarity, and coating properties of the protective film 300 and the first antistatic layer 410 .

[0070]

[0071]

[0072] In order to perform the test, the protective film 300 uses A1 or A2, and the first anti-static layer 410 uses B1 or B2. The A1 and A2 may refer to any protective film 300. For example, the protective film 300 may be divided according to the weight ratio of the polyimide compared to the total weight of the protective film 300. The B1 and B2 may refer to any first anti-static layer 410. For example, the first anti-static layer 410 may be divided according to the weight ratio of the PEDOT:PSS compared to the total weight of the first anti-static layer 410, the weight ratio of the urethane compound compared to the total weight of the first anti-static layer 410, and the weight ratio of the isocyanate compared to the total weight of the first anti-static layer 410. The first adhesive component 510 uses the pressure-sensitive adhesive including the acrylate compound.

[0073] Referring to Table 1, A1 and B1 were used in Test 1. The surface energy value of the first antistatic layer 410 coated on the protective film 300 in Test 1 was measured to be approximately 39.15 mN / m, and the polarity value was measured to be approximately 12.29 mN / m. In this case, the coating property of the first adhesive member 510 was good.

[0074] A1 and B2 were used in Test 2. The surface energy value of the first antistatic layer 410 coated on the protective film 300 in Test 2 was measured to be approximately 42.92 mN / m, and the polarity energy value was measured to be approximately 5.08 mN / m. In this case, the coating property of the first adhesive member 510 was poor.

[0075] A2 and B1 were used in Test 3. In Test 3, the surface energy value of the first antistatic layer 410 coated on the protective film 300 was measured to be approximately 42.3 mN / m, and the polarity energy value was measured to be approximately 13.7 mN / m. In this case, the coating property of the first adhesive member 510 was good.

[0076] A2 and B2 were used in Test 4. The surface energy value of the first antistatic layer 410 coated on the protective film 300 in Test 4 was measured to be approximately 29.5 mN / m, and the polarity value was measured to be approximately 0.08 mN / m. In this case, the coating property of the first adhesive member 510 was poor.

[0077] Referring to the test, depending on the combination of the protective film 300 and the first anti-charge layer 410, the polarity performance value of the first anti-charge layer 410 coated on the protective film 300 will be different. When the polarity performance value is approximately 12mN / m or less (for example, Test 2 and Test 4), the coating property of the first adhesive component 510 is reduced. On the contrary, when the polarity performance value is approximately 12mN / m or more (for example, Test 1 and Test 3), the coating property of the first adhesive component 510 is good. According to a preferred embodiment of the present invention, the protective film 300 and the first anti-charge layer 410 can be combined in such a way that the polarity performance value is approximately 12mN / m or more. As a result, the first adhesive component 510 can be evenly coated on the first anti-charge layer 410 and can be prevented from falling off from the first anti-charge layer 410.

[0078] On the other hand, when the protective film 300, the first antistatic layer 410, and the first adhesive member 510 are sequentially stacked, in order to prevent the above-mentioned defect caused by static electricity, the surface impedance value of the first adhesive member 510 should be a certain value (for example, approximately 10 11 According to a preferred embodiment of the present invention, the surface impedance of the first antistatic layer 410 may be approximately 10 6 ohm / sq or less, the surface impedance of the first adhesive member 510 is approximately 10 11 Therefore, the first antistatic layer 410 and the first adhesive member 510 may have a low surface resistance value, and the organic light emitting display device 1000 may prevent the defect caused by static electricity.

[0079] The second adhesive component 530 may be disposed between the protective film 300 and the buffer component 600 to bond the protective film 300 and the buffer component 600. To this end, the second adhesive component 530 may be made of substantially the same material as the first adhesive component 510. In one embodiment, the bottom surface of the second adhesive component 530 may be in direct contact with the buffer component 600, and the top surface of the second adhesive component 530 may be in direct contact with the second antistatic layer 430 coated on the bottom surface of the protective film 300.

[0080] The second anti-static layer 430 may be disposed between the protective film 300 and the buffer component 600. In order to prevent the defect caused by the static electricity, the second anti-static layer 430 may include a second compound. In one embodiment, the second compound may be the same as the first compound. In addition, the second anti-static layer 430 may be disposed on the bottom surface of the protective film 300 by coating, printing, etc. In addition, after the first anti-static layer 410 is disposed on the top of the protective film 300, the second anti-static layer 430 may be disposed on the bottom surface of the protective film 300. Alternatively, after the second anti-static layer 430 is disposed on the bottom surface of the protective film 300, the first anti-static layer 410 may be disposed on the top of the protective film 300.

[0081] The buffer component 600 may be disposed on the bottom surface of the second adhesive component 530. The buffer component 600 buffers external impact that may be applied to the display panel PNL, thereby protecting the display panel PNL. To this end, the buffer component 600 may include a cushion, a sponge, or other material that contains air and can buffer. In addition, in order to easily fold and unfold the display panel PNL repeatedly, the buffer component 600 may include a flexible material. For example, the buffer component 600 may include acrylic resin, polyurethane, thermoplastic polyurethane, latex, polyurethane foam, polystyrene foam, etc.

[0082] The support member 700 may be disposed on the bottom surface of the buffer member 600. The support member 700 may support the display panel PNL. To this end, the support member 700 may include a material having rigidity. For example, the support member 700 may include a metal material such as invar, an alloy of nickel (Ni) and iron (Fe), stainless steel (SUS), titanium (Ti), copper (Cu), etc.

[0083] In addition, the support member 700 may include a plurality of openings H that overlap with the folding region 20, and thus the support member 700 may include a first support member 710 and a second support member 720. The support member 700 includes a plurality of openings H, so that the support member 700 can support the display panel PNL, and at the same time, can easily and repeatedly perform folding and unfolding of the display panel PNL. In addition, the openings H that overlap with the folding region 20 can prevent wrinkles from being generated on the upper surface S1 of the folding region 20 located on the display panel PNL.

[0084] In an exemplary embodiment, the openings H may exist as empty spaces, and when the organic light emitting display device 1000 is folded and unfolded, the shapes of the openings H may also be deformed.

[0085] The bracket 800 may be disposed on the bottom surface of the supporting member 700. The bracket 800 may be disposed on the outermost portion of the organic light emitting display device 1000 to protect the organic light emitting display device 1000. To this end, the bracket 800 may also cover the side surface of the organic light emitting display device 1000. In addition, the bracket 800 may include an opening that overlaps with the folding region 20, and thus the bracket 800 may include a first bracket 810 and a second bracket 820.

[0086] The window component WIN may be disposed on the display panel PNL. The window component WIN constitutes the front of the organic light-emitting display device 1000 and may protect the display panel PNL. In order to realize a flexible organic light-emitting display device 1000, the window component WIN may include polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), etc.

[0087] The substrate 100 disposed in the display area 10 including the folding area 20 of the organic light-emitting display device 1000 can be supported as a whole by the protective film 300 overlapping the folding area 20. Thus, the shape of the substrate 100 can be prevented from being deformed in the folding area 20. In addition, the organic light-emitting display device 1000 includes a first anti-static layer 410 disposed between the protective film 300 and the first adhesive component 510, so that the static electricity can be prevented from being generated or the static electricity is not transmitted to the display panel PNL. In addition, no anti-static substance is added separately to the first adhesive component 510, so that the first adhesive component 510 can meet the above-mentioned characteristics such as flexibility, durability, and adhesion.

[0088] Although the present invention has been described above with reference to the exemplary embodiments, it will be appreciated by those skilled in the art that various modifications and changes can be made to the present invention without departing from the concept and scope of the present invention described in the claims.

[0089] (Industrial Applicability)

[0090] The present invention can be applied to a display device including a protective film and an electronic device including the same. For example, the present invention can be applied to a high-resolution smart phone, a portable phone, a smart tablet, a smart watch, a tablet computer, a car navigation system, a television, a computer monitor, a notebook, etc.

Claims

1. An organic light emitting display device, characterized in that: include: A substrate, comprising a display area and a folding area located locally in the display area; A display structure is disposed on the upper surface of the substrate; A protective film is disposed on the bottom surface of the substrate and overlaps with the folding area; an adhesive component, disposed between the protective film and the substrate to bond the protective film and the substrate; A first antistatic layer, disposed between the protective film and the adhesive member and formed of a first compound; A second antistatic layer, disposed on the bottom surface of the protective film and formed of a second compound; as well as The supporting member is disposed on the bottom surface of the second antistatic layer and includes an opening overlapping the folded area.

2. The organic light emitting display device according to claim 1, characterized in that: The first anti-static layer and the second anti-static layer overlap the folding area respectively.

3. The organic light emitting display device according to claim 1, wherein: The adhesive component overlaps the folding area.

4. The organic light emitting display device according to claim 1, wherein: The bottom surface of the first antistatic layer is in direct contact with the protective film, and the top surface of the first antistatic layer is in direct contact with the adhesive member.

5. The organic light emitting display device according to claim 1, wherein: The bonding member is in direct contact with the substrate.

6. The organic light emitting display device according to claim 1, wherein: The second compound is the same as the first compound.

7. The organic light emitting display device according to claim 1, wherein: The adhesive member is a pressure-sensitive adhesive including an acrylate compound.

8. The organic light emitting display device according to claim 1, wherein: The protective film includes polyimide.

9. The organic light emitting display device according to claim 8, characterized in that: The first compound includes PEDOT:PSS, urethane compounds and isocyanate.

10. The organic light emitting display device according to claim 1, wherein: The substrate includes polyimide.

11. The organic light emitting display device according to claim 1, wherein: The organic light emitting display device further includes a buffer component disposed between the second antistatic layer and the supporting component.

12. The organic light emitting display device according to claim 11, characterized in that: The buffer member includes at least one selected from acrylic resin, polyurethane, thermoplastic polyurethane, latex, polyurethane foam, and polystyrene foam.

13. The organic light emitting display device according to claim 1, wherein: The support member includes a metal substance.

Citation Information

Patent Citations

  • Touch sensor laminate, touch screen panel and image display device including the same

    CN107688408A

  • Display device

    JP2018105976A