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EP-4742875-A2 - DISPLAY APPARATUS

EP4742875A2EP 4742875 A2EP4742875 A2EP 4742875A2EP-4742875-A2

Abstract

A display apparatus may include a display panel including a plurality of non-bending areas and a bending area disposed between the plurality of non-bending areas; a first protection member disposed on the display panel in the bending area; a second protection member disposed on the first protection member; and a third protection member disposed on the second protection member.

Inventors

  • KIM, MYEONG JUN

Assignees

  • LG Display Co., Ltd.

Dates

Publication Date
20260513
Application Date
20240613

Claims (15)

  1. A display apparatus comprising: a flexible display panel (1) including at least two non-bending areas (NBA1, NBA2) and a bending area (BA) between two of the at least two non-bending areas (NBA1, NBA2), wherein the at least two non-bending areas (NBA1, NBA2) include a first non-bending area (NBA1) including a display area (AA) where a plurality of subpixels (SP1, SP2, SP3) are disposed; a light emitting element layer (500), wherein the light emitting element layer (500) includes a first electrode (510), an organic layer (540), and a second electrode (550); a bank (520) disposed to cover the ends of the first electrode (510); at least one spacer (530) disposed on the bank (520); an encapsulation part (600) disposed on the second electrode (550); a touch part (700) disposed on the encapsulation part (600), wherein the touch part (700) includes a plurality of first touch electrodes (740_R), a first touch connection electrode (720), a plurality of second touch electrodes, and a second touch connection electrode (740_C), wherein the first touch connection electrode (720) overlaps with the bank (520) and/or the at least one spacer (530) and connects two first touch electrodes (740_R) spaced apart from each other and adjacent to each other among the plurality of first touch electrodes (740_R).
  2. The display apparatus of claim 1, further comprising a first protection member (8) disposed on at least the bending area (BA), a second protection member (9) disposed on the first protection member (8); and a third protection member (11) disposed on the second protection member (9), and wherein the first protection member (8), the second protection member (9), and the third protection member (11) are disposed in that order from the inside to the outside of the display apparatus.
  3. The display apparatus of claim 2, wherein the second protection member (9) covers at least one end of the first protection member (8), in particular, a side surface of the at least one end of the first protection member (8), and/or wherein the first protection member (8) and the second protection member (9) extend from one side surface to the other side surface of the bending area (BA), and the third protection member (11) covers at least one side surface of the bending area (BA).
  4. The display apparatus of claim 2, wherein one end of the second protection member (9) contacts at least a portion of the flexible substrate, and/or wherein at least one end of the second protection member (9) is disposed in one of the at least two non-bending areas (NBA1, NBA2) or two ends of the second protection member (9) are disposed in the at least two non-bending areas (NBA1, NBA2), respectively, and/or wherein the third protection member (11) covers the bending area (BA) and a portion of the at least two non-bending areas (NBA1, NBA2).
  5. The display apparatus of claim 2, wherein a tensile modulus of the first protection member (8) is different from a tensile modulus of the third protection member (11), and/or wherein the tensile modulus of the third protection member (11) is equal to or less than the tensile modulus of the first protection member (8) or the tensile modulus of the third protection member (11) is greater than the tensile modulus of the first protection member (8).
  6. The display apparatus of claim 1, wherein the plurality of subpixels include a first light emitting part (EA1), a second light emitting part (EA2), and a third light emitting part (EA3), and wherein the second light emitting part (EA2) has a different shape from at least one of the first light emitting part (EA1) or the third light emitting part (EA3), and/or wherein the third light emitting part (EA3) has a larger area than at least one of the first light emitting part (EA1) or the second light emitting part (EA2).
  7. The display apparatus of claim 6, wherein at least two second light emitting part (EA2) are disposed in one pixel (P).
  8. The display apparatus of claim 7, wherein the first light emitting part (EA1) and the third light emitting part (EA3) are disposed to face each other, and the at least two second light emitting parts are disposed to face each other.
  9. The display apparatus of claim 1, wherein the organic layer includes a stack structure including a plurality of light emitting units, and wherein the plurality of light emitting units are stacked between the first electrode (510) and the second electrode (550), and/or wherein the plurality of subpixels include a first subpixel, a second subpixel, and a third subpixel, and wherein the first subpixel includes a stacked structure in which a first red light emitting layer and a second red light emitting layer are stacked, wherein the second subpixel includes a stacked structure in which a first green light emitting layer and a second green light emitting layer are stacked; and wherein the third subpixel includes a stacked structure in which a first blue light emitting layer and a second blue light emitting layer are stacked.
  10. The display apparatus of claim 1, the encapsulation part includes a first encapsulation layer, a second encapsulation layer on the first encapsulation layer and a third encapsulation layer on the second encapsulation layer, and wherein the first encapsulation layer includes or is composed of an inorganic material, wherein the second encapsulation layer includes or is composed of anorganic material, and wherein the third encapsulation layer includes or is composed of an inorganic material.
  11. The display apparatus of claim 1, wherein the second touch connection electrode (720) connects two second touch electrodes spaced apart from each other and adjacent to each other among the plurality of second touch electrodes, and/or wherein the display apparatus further comprises a buffer layer disposed on the encapsulation layer and an insulation layer disposed on the buffer layer, and wherein the first touch connection electrode is disposed on the buffer layer, wherein the first touch connection electrode is disposed on the buffer layer, wherein the plurality of first touch electrodes are disposed on the insulation layer, and wherein the two adjacent first touch electrodes (740_R) are electrically connected to the first touch connection electrode (720) through holes provided in the insulation layer.
  12. The display apparatus of claim 1, wherein the display apparatus further comprises at least one dam, and wherein at least one dam is disposed in the non-display area to surround the entirety or a part of the display area, and/or wherein the bank is formed to be black or colored, and wherein the at least one spacer includes or is composed of a transparent material.
  13. The display apparatus of any one of the preceding claims, further comprising a first thin film transistor (200) and a second thin film transistor (300) for driving the light emitting element layer (500), wherein each of a first semiconductor layer (210) the first thin film transistor (200) and a second semiconductor layer (310) of the second thin film transistor (300) includes one of an oxide semiconductor, an amorphous silicon, a poly silicon semiconductor, or a low temperature poly silicon.
  14. The display apparatus of any one of the preceding claims, wherein the display apparatus comprises at least one hole positioned in the display area, in which an optical part is disposed.
  15. The display apparatus of claim 14, wherein the optical part includes at least one of a camera or an optical sensor.

Description

This application claims priority from Republic of Korea Patent Application No. 10-2023-0084417 filed on June 29, 2023. BACKGROUND Field Embodiments of the present disclosure relate to a display apparatus, and more particularly, to a display apparatus which includes a protection member. Description of Related Art A modem display apparatus capable of displaying various information and interacting with a user who views the information is required to have various sizes, various shapes and various functions. Such a display apparatus includes a liquid crystal display apparatus (LCD), an electrophoretic display apparatus (FPD) or a light emitting diode display apparatus (LED). As the display apparatus is used in a variety of ways, the design of the display apparatus is becoming more diverse to reduce the area of a non-display area where an image is not displayed, for the aesthetic feeling of a user. To this end, research is being conducted to apply a flexible material to a substrate of the display apparatus so as to allow various parts of the display apparatus to be bent using the flexible properties of the flexible substrate. There is a problem that cracking and delamination of a display panel occur in a bending area thereof due to external impacts applied to the bending area of the flexible substrate. The cracking and delamination of the display panel may interfere with image driving of a display area, causing abnormal image display problems. Although various studies are being conducted to prevent cracking and delamination in the bending area where the display panel of the display apparatus is bent, these are still insufficient, and thus, development is keenly needed. SUMMARY An object to be achieved by the present disclosure is to provide a display apparatus which includes a plurality of protection members disposed on at least an outer part of a bending area of a display panel of the display apparatus to minimize or at least reduce the breakage of the display apparatus due to external impacts. Another object to be achieved by the present disclosure is to provide a display apparatus which includes a plurality of protection members made of different materials to minimize a change in physical properties likely to occur during a processing process of curing each protection member. Still another object to be achieved by the present disclosure is to provide a display apparatus which has improved reliability by ensuring that a signal is normally transferred through preventing or at least reducing cracking and delamination of a display panel of the display apparatus. It should be noted that objects of the present disclosure are not limited to those described above and other objects of the present disclosure will be apparent to those skilled in the art from the following descriptions. At least one of these objects is solved by the subject-matter of the independent claims. Refinements and advantageous embodiments are disclosed by the respective dependent claims. A display apparatus according to an embodiment of the present disclosure may include a display panel including a plurality of non-bending areas and a bending area disposed between the plurality of non-bending areas; a first protection member disposed on the display panel at least in the bending area; a second protection member disposed on the first protection member; and a third protection member disposed on the second protection member. Embodiments of the present disclosure may include one or more of the following optional features: At least one end of the first protection member may be disposed on the display panel in one of the at least two non-bending areas or two ends of the first protection member may be disposed on the display panel in the at least two non-bending areas, respectively. The second protection member may cover at least one end of the first protection member, in particular a side surface of the at least one end of the first protection member. The second protection member may cover a side surface of the end of the first protection member disposed on the display panel in the second non-bending area of the at least two non-bending areas. One end of the second protection member may contact at least a portion of the display panel. At least one end of the second protection member is disposed in one of the at least two non-bending areas, or two ends of the second protection member may be disposed in the at least two non-bending areas, respectively. The first protection member and the second protection member may be disposed along the bending area. The third protection member may cover a side surface of the bending area. The second protection member and the third protection member may be made of different materials. The second protection member may be composed of or may include an ultraviolet blocking material. The third protection member may be composed of or may include an ultraviolet transmitting material. The first protection member and/or the thir