CN108877513B - Display panel - Google Patents

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Publication number
CN108877513B
CN108877513B CN201810576417.0A CN201810576417A CN108877513B CN 108877513 B CN108877513 B CN 108877513B CN 201810576417 A CN201810576417 A CN 201810576417A CN 108877513 B CN108877513 B CN 108877513B
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segment
section
display panel
holes
fracture
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CN108877513A (en
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孙亮
曾勉
王征
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00Organic light-emitting devices
    • H10K50/80Constructional details
    • H10K50/84Passivation; Containers; Encapsulations
    • H10K50/844Encapsulations

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  • Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention discloses a display panel which comprises a display area and a bending area, wherein signal wires arranged in the display panel extend from the display area to the bending area, and the anti-fracture properties of the parts of the signal wires corresponding to the bending area are distributed in a preset manner along the length direction of the signal wires. The invention can prevent the signal wire arranged in the bending area from being broken.

Description

Display panel
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel.
[ background of the invention ]
The display panel generally includes a display area and a peripheral area disposed outside the display area, wherein the peripheral area includes a bending area, and the bending area is bent to the back of the display area.
Under the condition that the bending region is in a bending state, the parts corresponding to the bending region have different stresses at different positions, at this time, the signal lines arranged in the bending region also have different stresses at different positions, and the signal lines are easy to break at the positions with larger stresses, which affects the normal display of the display panel.
Therefore, a new technical solution is needed to solve the above technical problems.
[ summary of the invention ]
The invention provides a display panel, which can prevent a signal line arranged in a bending area of the display panel from being broken.
In order to solve the problems, the technical scheme of the invention is as follows:
a display panel comprises a display area and a bending area, wherein signal lines arranged in the display panel extend from the display area to the bending area, and the anti-fracture properties of the portions, corresponding to the bending area, of the signal lines are distributed in a preset manner along the length direction of the signal lines; the part of the signal wire corresponding to the bending region at least comprises a first segment and a second segment, wherein the first segment is positioned at two ends and the middle part of the signal wire corresponding to the bending region, the first segment has a first fracture resistance property, the second segment is positioned at one side of the first segment, and the second segment has a second fracture resistance property, wherein the value of the first fracture resistance property is greater than that of the second fracture resistance property; the predetermined distribution corresponds to the distribution of stress of the display panel corresponding to the bending region at different positions in a bending state; the signal line at least comprises three first subsections and two second subsections, the two first subsections are respectively positioned at two ends of the signal line, one first subsection is positioned in the middle of the signal line, and the second subsection is positioned between the two first subsections; the first section is provided with at least one first metal wire, the length direction of the first metal wire is parallel to the length direction of the first section, the second section is provided with at least one second metal wire, the length direction of the second metal wire is parallel to the length direction of the second section, and the density of the first metal wire arranged in the first section is greater than the density of the second metal wire arranged in the second section.
In the above display panel, the first fracture resistance property corresponds to at least one of a shape, a structure, a thickness, and a width of the first segment, and the second fracture resistance property corresponds to at least one of a shape, a structure, a thickness, and a width of the second segment.
In the above display panel, the first segment has a first thickness and the second segment has a second thickness; the first thickness is less than the second thickness.
In the above display panel, the first segment has a first width, and the second segment has a second width; the first width is greater than the second width.
In the above display panel, the first segment is provided with at least two first fracture prevention portions for preventing the first segment from being fractured, the second segment is provided with at least two second fracture prevention portions for preventing the second segment from being fractured.
In the display panel, the first fracture prevention portion is provided in a bent shape or a curved shape; the second fracture prevention part is arranged in a linear shape, and at least two first holes are formed in the second section.
In the display panel, the first fracture-preventing part and the second fracture-preventing part are both arranged in a straight line shape, at least two second holes are arranged in the first fracture-preventing part, at least two third holes are arranged in the second fracture-preventing part, and the areas of the second holes are larger than those of the third holes.
In the display panel, the third hole and the second hole are both elliptical; the size of the second hole in the length direction of the signal line gradually decreases from the position where the first segment is close to the display area to the position where the first segment is far away from the display area, and the size of the third hole in the length direction of the signal line gradually decreases from the position where the second segment is close to the display area to the position where the second segment is far away from the display area.
In the display panel, the distance between two adjacent second holes in the first segment gradually increases from the position of the first segment close to the display area to the position of the first segment far from the display area, and the distance between two adjacent third holes in the second segment gradually increases from the position of the second segment close to the display area to the position of the second segment far from the display area.
In the display panel, the distance between any two adjacent second holes in the first segment is equal, the distance between any two adjacent third holes in the second segment is equal, and the distance between any two adjacent second holes in the first segment is smaller than or equal to the distance between any two adjacent third holes in the second segment.
In the display panel, the third hole and the second hole are both circular in shape; the distance between any two adjacent second holes in the first section is equal, and the distance between any two adjacent third holes in the second section is equal; the distance between any two adjacent second holes in the first section is smaller than or equal to the distance between any two adjacent third holes in the second section.
In the display panel, the first fracture prevention portion and the second fracture prevention portion are both arranged in a linear shape, at least two first notches are arranged in the first fracture prevention portion, and at least two fourth holes are arranged in the second fracture prevention portion.
In the invention, the anti-fracture properties of the portions of the signal lines corresponding to the bending regions are distributed in a preset manner along the length direction of the signal lines, so that the portions of the signal lines corresponding to the bending regions can be adapted to the maximum stress which possibly occurs at different positions, and the portions of the signal lines corresponding to the bending regions are prevented from being fractured due to overlarge stress, thereby ensuring that the display panel of the invention can normally display in a bending state.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a display panel according to a first embodiment of the invention.
Fig. 2 is a schematic diagram of a first embodiment of signal lines in the display panel shown in fig. 1.
Fig. 3 is a diagram of a second embodiment of signal lines in the display panel shown in fig. 1.
Fig. 4 is a schematic diagram of a third embodiment of signal lines in the display panel shown in fig. 1.
Fig. 5 is a schematic diagram illustrating the relationship between the size of the elliptical second and third holes in the signal line in the Y direction and the position of the elliptical second and third holes in the signal line shown in fig. 3 and 4.
Fig. 6 is a diagram of a fourth embodiment of signal lines in the display panel shown in fig. 1.
Fig. 7 is a diagram of a fifth embodiment of signal lines in the display panel shown in fig. 1.
Fig. 8 is a diagram of a sixth embodiment of signal lines in the display panel shown in fig. 1.
[ detailed description ] embodiments
The word "embodiment" as used herein means an example, instance, or illustration. In addition, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form.
The display panel of the present invention is suitable for an OLED (Organic Light Emitting Diode display panel).
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a display panel according to a first embodiment of the present invention, and fig. 2 is a schematic diagram of a signal line in the display panel shown in fig. 1.
The display panel of the present embodiment includes a display module 103, an encapsulation layer 101, a back sheet 102, a foam layer 104, and a support sheet 105.
The display panel comprises a display area A and a bending area B, wherein the bending area B is arranged on at least one side of the display area A.
The foam layer 104 is disposed on the support plate 105, a portion of the back plate 102 corresponding to the display area a is disposed on the foam layer 104, a portion of the display module 103 corresponding to the display area a is disposed on the back plate 102, and the encapsulation layer 101 is disposed on a portion of the display module 103 corresponding to the display area a.
At least two signal lines 1031 are arranged in the display module 103 of the display panel, the at least two signal lines 1031 are arranged in an array form, the signal lines 1031 extend from the display area a to the bending area B, that is, one end of each signal line 1031 is connected with a thin film transistor switch, a touch electrode, a pixel electrode and the like in the display module 103, and the other end of each signal line 1031 is connected with at least one of a chip and a connecting pad of the display panel.
The signal line 1031 and the portion corresponding to the bending region B are disposed on a carrier plate, the carrier plate at least includes a flexible substrate, and of course, the carrier plate may further include at least one of an insulating layer, an organic layer, an inorganic layer, and the like.
The fracture-resistant property of the signal line 1031 corresponding to the bending region B is distributed along the length direction of the signal line 1031 in a predetermined manner.
Wherein, when the signal line 1031 is in a straight state (not bent), the length direction is a linear direction corresponding to the signal line 1031; when the signal line 1031 is in a bent state, the longitudinal direction is a direction of a corresponding bent line of the signal line 1031.
The predetermined distribution corresponds to a distribution of stress at different positions of a portion of the display panel corresponding to the bending region B in a bent state.
The portion of the signal line 1031 corresponding to the bending region B at least includes a first segment 10311 and a second segment 10312, and the first segment 10311 is connected to the second segment 10312.
The first segment 10311 is located at two ends and/or a middle portion of a portion of the signal line corresponding to the bending region B, the first segment 10311 is provided with at least two first fracture-prevention portions 103111, at least two first fracture-prevention portions 103111 are arranged in an array, specifically, at least two first fracture-prevention portions 103111 are arranged in a one-dimensional array along a length direction of the first segment 10311, the first fracture-prevention portions 103111 are used for preventing the first segment 10311 from being fractured, and the first fracture-prevention portions 103111 are used for reinforcing structural strength of the first segment 10311.
The second section 10312 is located at one side of the first section 10311, the second section 10312 is provided with at least two second fracture prevention portions 103121, at least two second fracture prevention portions 103121 are arranged in an array form, specifically, at least two second fracture prevention portions 103121 are arranged in a one-dimensional array form along the length direction of the second section 10312, the second fracture prevention portions 103121 are used for preventing the second section 10312 from being fractured, and the second fracture prevention portions 103121 are used for reinforcing the structural strength of the second section 10312.
The value of the first fracture resistance property of the first section 10311 is greater than the value of the second fracture resistance property of the second section 10312.
The first fracture resistance property matches a maximum value of possible stress of the first section 10311 in a bent state, and the second fracture resistance property matches a maximum value of possible stress of the second section 10312 in a bent state.
The predetermined distribution of signal lines corresponding to the bending region may be, for example: a first fracture resistance property (first segment 10311), a second fracture resistance property (second segment 10312), a first fracture resistance property (first segment 10311).
The first fracture resistance property corresponds to at least one of a shape, structure, thickness, width of the first section 10311, and the second fracture resistance property corresponds to at least one of a shape, structure, thickness, width of the second section 10312.
The first section 10311 has a first thickness and the second section 10312 has a second thickness.
The first thickness is less than or equal to the second thickness.
Further, the first section 10311 has a first width, and the second section 10312 has a second width.
The first width is greater than or equal to the second width.
The combination of at least two of the first breakage prevention portions 103111 is for improving the first breakage resistance property, and the combination of at least two of the second breakage prevention portions 103121 is for improving the second breakage resistance property.
In the present embodiment, the first fracture prevention portion 103111 is provided in a bent or curved shape. The first section 10311 including at least two first breakage preventing portions 103111 is formed in a zigzag or wavy shape.
The second fracture prevention portion 103121 is linearly arranged, and the second section 10312 has at least two first holes arranged in an array.
The shape of the first hole is one of a circle, an ellipse and a polygon.
As an improvement, the first hole is filled with a buffer glue for improving the second fracture resistance of the second fracture prevention part 103121.
In this embodiment, the signal line 1031 includes at least three first sections 10311 and two second sections 10312, the two first sections 10311 are respectively located at two ends of the signal line 1031, one first section 10311 is located in the middle of the signal line 1031, and the second section 10312 is located between the two first sections 10311.
As an improvement, at least one first wire is disposed in the first section 10311, a length direction of the first wire is parallel to a length direction of the first section 10311, the first wire is covered in the first section 10311, for example, the material of the first wire is one or more alloys of copper, aluminum, molybdenum, iron, and the like, the material of the first wire is the same as or different from the material of the signal line, and the first wire is used for improving the structural strength of the first section 10311 to improve the first fracture resistance property of the first section 10311. At least one second wire is disposed in the second section 10312, a length direction of the second wire is parallel to a length direction of the second section 10312, the second wire is covered in the second section 10312, for example, the second wire is made of one or more alloys of copper, aluminum, molybdenum, iron, and the like, the material of the second wire is the same as or different from that of the signal line, and the second wire is used for improving the structural strength of the second section 10312 to improve the second fracture resistance of the second section 10312.
A density of the first wires disposed in the first section is greater than a density of the second wires disposed in the second section. The material of the first wire is the same as or different from the material of the second wire.
Both ends of the signal line 1031 and the middle portion of the signal line 1031 are portions where the stress of the signal line 1031 corresponding to the bending region B is relatively large in the bent state. In contrast, the region between the one end of the signal line 1031 and the middle portion of the signal line 1031 is a portion of the signal line 1031 corresponding to the bending region B having relatively small stress in a bent state, and therefore, it is necessary to provide different shapes for the signal line corresponding to the portion having relatively large stress and the portion having relatively small stress, so that the value of the fracture resistance property of the portion having relatively large stress on the signal line 1031 is greater than the value of the fracture resistance property of the portion having relatively small stress. That is, the values of the fracture-resistant property of both ends and the middle portion of the signal line 1031 are greater than the values of the fracture-resistant property between the end portions and the middle portion of the signal line.
Referring to fig. 3, fig. 3 is a schematic diagram of a second embodiment of the signal lines 103 in the display panel shown in fig. 1. This embodiment is similar to the first embodiment described above, except that:
in this embodiment, the first fracture prevention portion 103111 and the second fracture prevention portion 103121 are both provided in a straight line shape, at least two second holes are provided in the first fracture prevention portion 103111, at least two third holes are provided in the second fracture prevention portion 103121, and the area of the second holes is greater than or equal to the area of the third holes.
In this embodiment, the second hole and the third hole are both oval, and the size of the oval second hole in the length direction (Y direction) of the signal line 1031 gradually decreases from the position where the first section 10311 is away from the second section 10312 (the position where the first section 10311 is close to the display area a) to the position where the first section 10311 is close to the second section 10312 (the position where the first section 10311 is away from the display area a), as shown in fig. 3 and 5.
Also, the size of the oval-shaped third hole in the length direction (Y direction) of the signal line 1031 gradually decreases from a position where the second section 10312 is close to the first section 10311 (a position where the second section 10312 is close to the display area a) to a position where the second section 10312 is far from the first section 10311 (a position where the second section 10312 is far from the display area a), as shown in fig. 3 and 5.
In this embodiment, a distance between any two adjacent second holes in the first section 10311 is equal to a distance between any two adjacent third holes in the second section 10312, wherein the distance between two adjacent second holes in the first section 10311 is a distance between two nearest ends of two adjacent second holes in the length direction of the signal line 1031, and the distance between two adjacent third holes in the second section 10312 is a distance between two nearest ends of two adjacent third holes in the length direction of the signal line 1031.
Any two adjacent second holes are equally spaced in the first section 10311. Any two adjacent third holes are equally spaced in the second section 10312.
As an improvement, the second and third holes are filled with a buffer glue for improving the first fracture resistance property of the first fracture prevention part 103111 and the second fracture resistance property of the second fracture prevention part 103121.
Fig. 4 is a schematic diagram of a third embodiment of the signal lines 103 in the display panel shown in fig. 1. This embodiment is similar to the second embodiment described above, except that:
in this embodiment, a distance between any two adjacent second holes in the first section 10311 is smaller than a distance between any two adjacent third holes in the second section 10312.
The distance between two adjacent second holes in the first section 10311 gradually increases from a position where the first section 10311 is away from the second section 10312 (a position where the first section is close to the display area a) to a position where the first section 10311 is close to the second section 10312 (a position where the first section is away from the display area a), and the distance between two adjacent third holes in the second section 10312 gradually increases from a position where the second section 10312 is close to the first section 10311 (a position where the second section is close to the display area a) to a position where the second section 10312 is away from the first section 10311 (a position where the second section is away from the display area a).
Referring to fig. 6, fig. 6 is a schematic diagram of a fourth embodiment of the signal lines 103 in the display panel shown in fig. 1. This embodiment is similar to the third embodiment described above, except that:
in this embodiment, the second hole and the third hole are both circular.
The distance between any two adjacent second holes in the first section 10311 is smaller than or equal to the distance between any two adjacent third holes in the second section 10312.
Any two adjacent second holes are equally spaced in the first section 10311. Any two adjacent third holes are equally spaced in the second section 10312.
Referring to fig. 7, fig. 7 is a schematic diagram of a fifth embodiment of the signal lines 103 in the display panel shown in fig. 1.
In this embodiment, the second hole and the third hole are one of a circle, an ellipse, and a polygon.
The width of the first section 10311 is greater than the width of the second section 10312.
Referring to fig. 8, fig. 8 is a schematic diagram of a sixth embodiment of the signal lines 103 in the display panel shown in fig. 1.
In this embodiment, the first fracture prevention portion 103111 and the second fracture prevention portion 103121 are both linearly arranged, at least two first notches are arranged in the first fracture prevention portion 103111, and at least two fourth holes are arranged in the second fracture prevention portion 103121.
The orientation of two adjacent first notches is opposite.
As a modification, the fourth hole is filled with a buffer paste for improving the second fracture resistance property of the second fracture prevention part 103121.
In the present invention, since the fracture-resistant property of the portion of the signal line corresponding to the bending region is in a predetermined distribution along the length direction of the signal line, the portion of the signal line corresponding to the bending region can adapt to the maximum stress that may occur at different positions, preventing the portion of the signal line corresponding to the bending region from being fractured due to excessive stress, and particularly, since the portion of the signal line 1031 corresponding to the bending region B is provided with the first fracture-preventing portion 103111 and the second fracture-preventing portion 103121, and the first fracture-preventing portion 103111 and the second fracture-preventing portion 103121 are respectively provided at positions where the portion of the signal line 1031 corresponding to the bending region B has different stresses in a bent state, the first fracture-preventing portion 103111 and the second fracture-preventing portion 103121 can respectively prevent the first segment 10311 and the second segment 10312 from being fractured in the bent state, therefore, the display panel of the invention can display normally when being in a bending state.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims (12)

1. The display panel is characterized by comprising a display area and a bending area, wherein signal lines arranged in the display panel extend from the display area to the bending area, and the anti-fracture properties of the parts of the signal lines corresponding to the bending area are distributed in a preset manner along the length direction of the signal lines;
the part of the signal wire corresponding to the bending region at least comprises a first segment and a second segment, wherein the first segment is positioned at two ends and the middle part of the signal wire corresponding to the bending region, the first segment has a first fracture resistance property, the second segment is positioned at one side of the first segment, and the second segment has a second fracture resistance property, wherein the value of the first fracture resistance property is greater than that of the second fracture resistance property;
the predetermined distribution corresponds to the distribution of stress of the display panel corresponding to the bending region at different positions in a bending state;
the signal line at least comprises three first subsections and two second subsections, the two first subsections are respectively positioned at two ends of the signal line, one first subsection is positioned in the middle of the signal line, and the second subsection is positioned between the two first subsections;
the first section is provided with at least one first metal wire, the length direction of the first metal wire is parallel to the length direction of the first section, the second section is provided with at least one second metal wire, the length direction of the second metal wire is parallel to the length direction of the second section, and the density of the first metal wire arranged in the first section is greater than the density of the second metal wire arranged in the second section.
2. The display panel of claim 1, wherein the first fracture resistance property corresponds to at least one of a shape, a structure, a thickness, and a width of the first segment, and wherein the second fracture resistance property corresponds to at least one of a shape, a structure, a thickness, and a width of the second segment.
3. The display panel of claim 2, wherein the first segment has a first thickness and the second segment has a second thickness;
the first thickness is less than the second thickness.
4. The display panel of claim 2, wherein the first segment has a first width and the second segment has a second width;
the first width is greater than the second width.
5. The display panel according to any one of claims 2 to 4, wherein the first segment is provided with at least two first fracture prevention portions for preventing the first segment from being fractured, and the second segment is provided with at least two second fracture prevention portions for preventing the second segment from being fractured.
6. The display panel according to claim 5, wherein the first fracture prevention portion is provided in a bent or curved shape;
the second fracture prevention part is arranged in a linear shape, and at least two first holes are formed in the second section.
7. The display panel according to claim 5, wherein the first fracture prevention portion and the second fracture prevention portion are both linearly arranged, at least two second holes are arranged in the first fracture prevention portion, at least two third holes are arranged in the second fracture prevention portion, and the area of each second hole is larger than that of each third hole.
8. The display panel according to claim 7, wherein the third hole and the second hole are each elliptical in shape;
the size of the second hole in the length direction of the signal line gradually decreases from the position where the first segment is close to the display area to the position where the first segment is far away from the display area, and the size of the third hole in the length direction of the signal line gradually decreases from the position where the second segment is close to the display area to the position where the second segment is far away from the display area.
9. The display panel according to claim 7, wherein the distance between two adjacent second holes in the first segment increases gradually from the position of the first segment near the display area to the position of the first segment far from the display area, and the distance between two adjacent third holes in the second segment increases gradually from the position of the second segment near the display area to the position of the second segment far from the display area.
10. The display panel according to claim 7, wherein the distance between any two adjacent second holes in the first segment is equal, the distance between any two adjacent third holes in the second segment is equal, and the distance between any two adjacent second holes in the first segment is smaller than or equal to the distance between any two adjacent third holes in the second segment.
11. The display panel according to claim 7, wherein the third hole and the second hole are both circular in shape;
the distance between any two adjacent second holes in the first section is equal, and the distance between any two adjacent third holes in the second section is equal;
the distance between any two adjacent second holes in the first section is smaller than or equal to the distance between any two adjacent third holes in the second section.
12. The display panel according to claim 5, wherein the first fracture prevention portion and the second fracture prevention portion are both provided in a linear shape, wherein at least two first notches are provided in the first fracture prevention portion, and at least two fourth holes are provided in the second fracture prevention portion.
CN201810576417.0A 2018-06-06 2018-06-06 Display panel Active CN108877513B (en)

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