WO2021238712A1 - 显示基板、显示装置及其制作方法 - Google Patents

显示基板、显示装置及其制作方法 Download PDF

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Publication number
WO2021238712A1
WO2021238712A1 PCT/CN2021/094201 CN2021094201W WO2021238712A1 WO 2021238712 A1 WO2021238712 A1 WO 2021238712A1 CN 2021094201 W CN2021094201 W CN 2021094201W WO 2021238712 A1 WO2021238712 A1 WO 2021238712A1
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Prior art keywords
display substrate
elongated hole
arc
pixel pitch
display
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PCT/CN2021/094201
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English (en)
French (fr)
Inventor
赵佳
王品凡
曹方旭
宋尊庆
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京东方科技集团股份有限公司
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Priority to US17/769,030 priority Critical patent/US20240107824A1/en
Publication of WO2021238712A1 publication Critical patent/WO2021238712A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating 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
    • G09F9/301—Indicating 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating 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
    • G09F9/33—Indicating 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 being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/1201—Manufacture or treatment
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/80—Manufacture or treatment specially adapted for the organic devices covered by this subclass using temporary substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a display substrate, a display device and a manufacturing method thereof.
  • OLED flexible display devices can meet the bending of a two-dimensional surface, but are not suitable for display devices with more complicated situations (for example, head-mounted display devices, etc.) for the flexibility requirements of the display substrate.
  • the purpose of the present disclosure is to overcome the above-mentioned shortcomings of the prior art and provide a display substrate, a display device and a manufacturing method thereof.
  • a display substrate has a central area and an edge area, and the display substrate includes a plurality of structural units arrayed in the central area and the edge area;
  • Each of the structural units is provided with a plurality of through holes, and the plurality of through holes divide a pixel island for display and a bridge for transmitting signals; the plurality of through holes are arranged around the pixel island; A part of the bridge part is located between the pixel island and the through hole, and the other part is located between the adjacent through hole;
  • the pixel pitch of adjacent pixel islands in the structural unit of the edge area is equal to the pixel pitch of adjacent pixel islands in the structural unit of the central area, and both are the first pixel pitch.
  • the through hole has a first elongated hole and a second elongated hole located at opposite ends of the first elongated hole, and the first elongated hole The hole communicates with the second elongated hole; the length direction of the first elongated hole intersects the length direction of the second elongated hole, and the center point of the first elongated hole It is on the same straight line as the center point of the second elongated hole; wherein the length of the first elongated hole is greater than the length of the second elongated hole.
  • the difference between the length of the first elongated hole and the length of the second elongated hole is 150 ⁇ m to 200 ⁇ m.
  • the length of the first elongated hole is 400 ⁇ m to 1000 ⁇ m; the length of the second elongated hole is 220 ⁇ m to 820 ⁇ m.
  • the widths of the first elongated hole and the second elongated hole are equal.
  • the widths of the first elongated hole and the second elongated hole are 5 ⁇ m to 50 ⁇ m.
  • the structural unit is provided with four pixel islands arranged in an array in a first direction and a second direction, and each pixel island is surrounded by Four said through holes;
  • the length direction of the first elongated hole of the two through-holes opposite in the first direction is the second direction
  • the length direction of the first elongated hole of the two through-holes opposite in the second direction is the first One direction
  • the second elongated hole of one of the adjacent through holes is opposite to the middle area of the first elongated hole of the other.
  • the first pixel pitch is one half of the sum of the length of the first elongated hole and the length of the second elongated hole.
  • a manufacturing method of a display device which includes:
  • the substrate is provided with a plurality of holes
  • a display substrate is formed on the base, the display substrate is the display substrate described in any one of the above, and the through holes of the display substrate correspond to the hole regions of the base in a one-to-one correspondence;
  • the pixel pitch of adjacent pixel islands in the structural unit of the central area is the second pixel pitch
  • the pixel pitch of adjacent pixel islands in the structural unit of the edge area is the second pixel pitch.
  • the third pixel pitch is greater than the first pixel pitch and smaller than the second pixel pitch.
  • the difference between the second pixel pitch and the first pixel pitch is 10 ⁇ m to 100 ⁇ m.
  • separating the display substrate from the base includes:
  • the display substrate is separated from the base by means of laser separation, chemical etching separation, or physical mechanical separation.
  • attaching the separated display substrate to the curved backplane includes:
  • a roller is used to roll from the central area of the display substrate to the edge area of the display substrate, so that the edge area of the display substrate is attached to the central area of the arc-shaped backplane.
  • a display device including an arc-shaped backplane and an arc-shaped display structure attached to the arc-shaped backplane, the arc-shaped display structure being any one of the foregoing The structure formed by attaching the display substrate to the arc-shaped backplane;
  • the pixel pitch of adjacent pixel islands in the structural unit of the central area is the second pixel pitch
  • the pixel pitch of adjacent pixel islands in the structural unit of the edge area is the third pixel pitch.
  • the third pixel pitch is greater than the first pixel pitch and smaller than the second pixel pitch.
  • the difference between the second pixel pitch and the first pixel pitch is 10 ⁇ m to 100 ⁇ m.
  • the arc-shaped back plate has an inner arc surface close to the arc-shaped display structure and an outer arc surface far away from the arc-shaped display structure.
  • the outer arc surface has the same shape, and the inner arc surface and the outer arc surface are one of a circular arc type, an elliptical arc type or a parabolic type.
  • the included angle of the tangents corresponding to the two ends of the outer arc surface in the bending direction is less than 180° and greater than or equal to 170°.
  • the display device is a head-mounted display device.
  • the display substrate, the display device and the manufacturing method thereof of the present disclosure are provided with structural units with multiple through holes in both the center area and the edge area of the display substrate, so that the display substrate as a whole has a certain stretching function and can be used for heads.
  • the display substrate of the present disclosure has specific structural units, so that different regions are stretched during the stretching process.
  • the stretch is different, that is: the stretch of the edge area is less than the stretch of the center area, so that the pixel pitch of adjacent pixel islands in the edge area is smaller than the pixel pitch of adjacent pixel islands in the center area; due to the fit with the curved backplane
  • the latter display substrate has the characteristics of small pixel pitch in the edge area and large pixel pitch in the center area. Therefore, it can improve the edge distortion phenomenon that occurs when the display device is observed.
  • FIG. 1 is a diagram of the optical path between the display substrate and the lens described in the related art.
  • FIG. 2 is a schematic side view of the structure of the display substrate in an unstretched state according to an embodiment of the disclosure.
  • FIG. 3 is a schematic diagram of the positions of various parts in the structural unit of the edge region or the central region of the display substrate shown in an embodiment in FIG. 2.
  • FIG. 4 is a schematic diagram of the structure of the through hole in the display substrate shown in an embodiment in FIG. 3.
  • FIG. 5 is a schematic diagram of the positions of various parts in the structural unit of the edge area or the central area of the display substrate shown in another embodiment of FIG. 2.
  • FIG. 6 is a schematic diagram of the positions of the four structural units shown in FIG. 5.
  • FIG. 7 is a schematic side view of the structure of the display device according to an embodiment of the disclosure.
  • FIG. 8 is a schematic diagram showing the positions of various parts in a structural unit in the central area of the display substrate in an arc shape in FIG. 7.
  • FIG. 9 is a schematic diagram showing the positions of various parts in a structural unit in the edge region of the display substrate in an arc shape in FIG. 7.
  • FIG. 10 is a simulation effect diagram of an arc-shaped display substrate according to an embodiment of the disclosure.
  • FIG. 11 is an enlarged simulation effect diagram of A in the central area of the arc-shaped display substrate shown in FIG. 10.
  • FIG. 12 is an enlarged simulation effect diagram at B in the edge area of the arc-shaped display substrate shown in FIG. 10.
  • FIG. 13 is a diagram of the light path between the arc-shaped display substrate and the lens according to an embodiment of the disclosure.
  • FIG. 14 is a flowchart of a manufacturing method of a display device according to an embodiment of the disclosure.
  • Display device 11. Display substrate; 11a, central area; 11b, edge area; 110, structural unit; 111, through hole; 1111, first elongated hole; 1112, second elongated hole; 112, Pixel island; 113, bridge; 1131, isolation structure; 12, curved backplane; 13, lens.
  • the "on”, “formed on” and “disposed on” in this article can mean that one layer is directly formed or disposed on another layer, or it can mean a layer A layer is formed indirectly or arranged on another layer, that is, there are other layers between the two layers.
  • first may be used herein to describe various components, components, elements, regions, layers and/or parts, these components, components, elements, regions, and layers And/or part should not be limited by these terms. Rather, these terms are used to distinguish one component, member, element, region, layer, and/or section from another.
  • FIG. 1 shows a diagram of the light path between the display substrate 11 and the lens 13 mentioned in the related art; in the related art, the display substrate 11 used in a head-mounted display device is arc-shaped and displays The pixel pitch of adjacent pixel islands 112 in the edge area 11b of the substrate 11 is the same as the pixel pitch of adjacent pixel islands 112 in the central area 11a, so that the edge distortion phenomenon is serious during observation. It should be noted that the dotted arrow in FIG. 1 indicates For the light path.
  • an embodiment of the present disclosure provides a display substrate 11.
  • the display substrate 11 has a central area 11a and an edge area 11b, as shown in FIGS. 3 to 5, and the display substrate 11 includes a plurality of The structural units 110 arranged in an array in the central area 11a and the edge area 11b; as shown in FIGS. 3 and 4, each structural unit 110 is provided with a plurality of through holes 111. It should be understood that the through holes 111 are in the display substrate 11 penetrates the entire display substrate 11 in the thickness direction.
  • each pixel island 112 may include a plurality of pixels.
  • the bridge portion 113 includes a plurality of signal lines for transmitting signals
  • each pixel island 112 may include a plurality of pixels.
  • red (R) pixels, green (G) pixels, blue (B) pixels, etc. and each pixel can include a display device, the display device can be an OLED display, and the display device can be wired with a signal Electric connection for luminous display.
  • a plurality of through holes 111 in each structural unit 110 are arranged around the pixel island 112; and a part of the bridge 113 is located between the pixel island 112 and the through hole 111, and the other part is located in the phase.
  • the pixel pitch of the adjacent pixel island 112 in the structural unit 110 in the edge region 11b of the display substrate 11 and the pixel pitch of the adjacent pixel island 112 in the structural unit 110 in the central region 11a They are equal, and both are the first pixel pitch d1.
  • the display substrate 11 by providing the structural unit 110 with a plurality of through holes 111 in both the central area 11a and the edge area 11b of the display substrate 11, the display substrate 11 as a whole has a certain stretching function and can be used for In a head-mounted display device; in addition, as shown in FIG. 7, when the stretchable display substrate 11 is attached to the curved backplane 12 with a certain curvature, the display substrate 11 of the present disclosure has a specific The structural unit 110 shown in FIGS. 3 to 5, therefore, makes the stretching amount of different regions in the stretching process different, that is, the stretching amount of the edge region 11b is smaller than the stretching amount of the central region 11a, as shown in FIGS.
  • the pixel pitch d3 of adjacent pixel islands 112 in the edge area 11b is smaller than the pixel pitch d2 of adjacent pixel islands 112 in the central area 11a;
  • the substrate 11 has a curved display structure) with a small pixel pitch d3 in the edge area 11b, and a large pixel pitch d2 in the central area 11a. Therefore, compared with the solution mentioned in the related art, the display device 10 can be improved when observing 13 shows the optical path diagram between the arc-shaped display substrate 11 and the lens 13 according to an embodiment of the present disclosure. It should be noted that the dotted arrow in FIG. 13 represents the optical path.
  • a pixel is the smallest unit that constitutes a digital image, that is, a color dot; and the pixel pitch refers to the distance between the same pixel dots in adjacent pixel islands in the display substrate. Distance, for example: each pixel island includes red pixels, green pixels, and blue pixels arranged horizontally, and the pixel pitch refers to the horizontal distance between red pixels (green pixels, blue pixels) in adjacent pixel islands.
  • the pixel islands including horizontally arranged red pixels, green pixels, and blue pixels can also be square, but the shape of the pixel islands is not limited to this, and can also be six. The shape of the polygon, etc. depends on the number and arrangement of the pixels in the pixel island.
  • the through hole 111 in the structural unit 110 has a first elongated hole 1111 and a second elongated hole 1112 located at opposite ends of the first elongated hole 1111.
  • the first elongated hole 1111 communicates with the second elongated hole 1112, and corresponds to the middle area of the second elongated hole 1112; that is, the length direction of the first elongated hole 1111 is the same as that of the second elongated hole 1112.
  • the longitudinal direction of the strip hole 1112 intersects, and the center point of the first elongate hole 1111 and the center point of the second elongate hole 1112 are on the same straight line; as shown in FIG. 4, the through hole 111 can be "worked"
  • the font structure is arranged.
  • the length L1 of the first elongated hole 1111 in the through hole 111 is greater than the length L2 of the second elongated hole 1112.
  • the difference between the length L1 of the first elongated hole 1111 and the length L2 of the second elongated hole 1112 is about 150 ⁇ m to 200 ⁇ m, such as 150 ⁇ m, 160 ⁇ m, 170 ⁇ m, 180 ⁇ m, 190 ⁇ m, 200 ⁇ m, etc. Wait.
  • the length L1 of the first elongated hole 1111 is about 400 ⁇ m to 1000 ⁇ m; for example, 400 ⁇ m, 600 ⁇ m, 800 ⁇ m, 1000 ⁇ m, and so on.
  • the length L2 of the second elongated hole 1112 is about 220 ⁇ m to 820 ⁇ m; for example: 220 ⁇ m, 420 ⁇ m, 620 ⁇ m, 820 ⁇ m, and so on.
  • the width W1 of the first elongated hole 1111 and the width W2 of the second elongated hole 1112 in the through hole 111 are equal.
  • the width W1 of the first elongated hole 1111 and the width W2 of the second elongated hole 1112 are about 5 ⁇ m to 50 ⁇ m, such as 5 ⁇ m, 14 ⁇ m, 23 ⁇ m, 32 ⁇ m, 41 ⁇ m, 50 ⁇ m, and so on.
  • each structural unit 110 may be provided with four pixel islands 112 arranged in an array in a first direction X and a second direction Y, and each pixel island 112 Surrounded by four through holes 111; this through hole 111 is the "I"-shaped structure mentioned in the previous embodiment; wherein, two through holes 111 opposite to each other in the first direction X (ie: located on the pixel island 112) The length direction of the first elongated hole 1111 of the through holes 111 on opposite sides in the first direction X is the second direction Y; in the second direction Y, the two through holes 111 are opposite to each other (that is, the pixel island 112 is located in the second direction).
  • the length direction of the first elongated hole 1111 of the through holes 111) on opposite sides of the two directions Y is the first direction X, and the second elongated shape of one of the adjacent through holes 111 around each pixel island 112
  • the hole 1112 is opposite to the middle area of the first elongated hole 1111 of the other.
  • adjacent pixel islands 112 in each structural unit 110 may share a part of the through hole 111, as shown in FIG. 6, and adjacent structural units 110 may also share Partially through hole 111.
  • the first pixel pitch d1 of adjacent pixel islands 112 in the structural unit 110 is one half of the sum of the length L1 of the first elongated hole 1111 and the length L2 of the second elongated hole 1112 .
  • the display substrate 11 of the embodiment of the present disclosure will be stretched to a certain extent during the process of attaching to the curved backplane 12, and the stretching amount of different regions in the display substrate 11 is different, that is, :
  • the stretching amount of the edge area 11b is less than the stretching amount of the central area 11a, so that the pixel pitch d3 of the adjacent pixel island 112 in the edge area 11b is smaller than the pixel pitch d2 of the adjacent pixel island 112 in the central area 11a;
  • the display substrate 11 after the bonding of the plates 12 has the characteristics of a small pixel pitch d3 in the edge area 11b and a large pixel pitch d2 in the central area 11a. Therefore, the edge distortion phenomenon of the display device 10 during observation can be improved.
  • an isolation structure 1131 may be provided around the through hole 111.
  • the isolation structure 1131 may be located in the bridge portion 113.
  • the isolation structure 1131 may isolate the organic light-emitting material. In order to prevent water and oxygen from entering the display device in the pixel island 112 along the organic light-emitting material at the through hole 111, the display effect of the display substrate 11 is ensured.
  • the implementation of the present disclosure also provides a manufacturing method of a display device.
  • the display device as a whole may have an arc-shaped structure with a certain arc.
  • the manufacturing method may include:
  • Step S100 providing a substrate, and a plurality of hole regions are opened on the substrate;
  • Step S102 A display substrate is formed on the base.
  • the display substrate is the display substrate 11 shown in FIGS. 2 to 6 described in any of the embodiments. The specific structure of the display substrate 11 will not be repeated here. Yes, the through holes 111 of the display substrate 11 correspond to the hole areas of the base one by one;
  • Step S104 separating the display substrate from the base
  • Step S106 Attach the separated display substrate to the arc-shaped backplane so that the display substrate has an arc-shaped display structure, as shown in FIGS. 7 to 9;
  • the pixel pitch of adjacent pixel islands 112 in the structural unit 110 in the central area 11a is the second pixel pitch d2, and the edge area 11b
  • the pixel pitch of adjacent pixel islands 112 in the structural unit 110 is a third pixel pitch d3, which is larger than the first pixel pitch d1 (as shown in FIGS. 3 and 5) and smaller than the second pixel pitch d2.
  • the difference between the second pixel pitch d2 and the first pixel pitch d1 may be 10 ⁇ m to 100 ⁇ m, such as 10 ⁇ m, 40 ⁇ m, 70 ⁇ m, 100 ⁇ m, and so on.
  • a substrate is provided, and a plurality of hole regions are opened on the substrate.
  • the substrate may be a deformable film layer, and the deformable film layer may adopt a structure such as a highly elastic and wrinkled organic film layer.
  • the organic film layer has a plurality of holes; but not limited to this, the substrate It can also be a rigid substrate, such as a glass substrate, etc., depending on the specific circumstances.
  • a display substrate 11 is formed on the base, as shown in FIGS. 2-6.
  • processes such as deposition, sputtering, and evaporation can be used to form a driving circuit and an organic light-emitting device on a non-porous area on the substrate.
  • the driving circuit may include thin film transistors, storage capacitors, signal traces, etc.; organic light-emitting devices It may include an anode, an organic light-emitting material, a cathode, etc., which are sequentially formed, and the organic light-emitting device may be electrically connected to a thin film transistor and a signal wiring.
  • the specific structure of the display substrate 11 refer to the form described in any of the foregoing embodiments, and will not be repeated here.
  • step S104 the display substrate 11 is separated from the base.
  • the display substrate 11 can be separated from the base by means of laser separation, chemical etching separation, or physical mechanical separation.
  • step S106 the separated display substrate 11 is attached to the arc-shaped backplane 12, so that the display substrate 11 has an arc-shaped display structure, as shown in FIGS. 7 to 9; specifically, it may include steps S1060 and Step S1062, specifically:
  • the central area 11a of the separated display substrate 11 and the central area 11a of the arc-shaped back plate 12 are bonded together.
  • the curved back plate 12 may be a rigid substrate, such as a glass substrate, etc., but it is not limited to this, and may also be other materials.
  • step S1062 a roller is used to roll from the central area 11a of the display substrate 11 to the edge area 11b of the display substrate 11, so that the edge area 11b of the display substrate 11 is attached to the central area 11a of the arc-shaped back plate 12.
  • An arc-shaped display substrate 11 is formed.
  • the bonding between the display substrate 11 and the curved backplane 12 can be ensured As a result, the occurrence of air bubbles between the display substrate 11 and the arc-shaped back plate 12 is avoided.
  • the embodiments of the present disclosure provide a display device, which can be manufactured by the manufacturing method described in any of the above embodiments.
  • the display device 10 may include an arc-shaped back plate 12 and a
  • the arc-shaped display structure on the back plate 12 is a structure formed by bonding the display substrate 11 and the arc-shaped back plate 12 described in any of the above embodiments, as shown in FIGS.
  • the arc-shaped display structure (ie: the arc-shaped display substrate 11) includes a plurality of structural units 110 arrayed in the central region 11a and the edge region 11b; each structural unit 110 is provided with a plurality of through holes 111, and a plurality of The through hole 111 divides the pixel island 112 for display and the bridge 113 for signal transmission; a plurality of through holes 111 are arranged around the pixel island 112; a part of the bridge 113 is located between the pixel island 112 and the through hole 111, The other part is located between adjacent through holes 111; among them, FIG.
  • FIG 10 shows a simulation effect diagram of an arc-shaped display substrate 11 (ie: an arc-shaped display structure) according to an embodiment of the present disclosure; in the arc-shaped display structure,
  • the pixel pitch of adjacent pixel islands 112 in the structural unit 110 in the central area 11a is the second pixel pitch d2, as shown in FIGS. 8, 10, and 11; the adjacent pixel island 112 in the structural unit 110 in the edge area 11b
  • the pixel pitch of is the third pixel pitch d3, as shown in Fig. 9, Fig. 10 and Fig. 12; the third pixel pitch d3 is smaller than the second pixel pitch d2.
  • the first pixel pitch d1 when the display substrate 11 is not attached to the curved backplane 12, that is, when it is not in a complete state, is smaller than the third pixel pitch d3 and the second pixel pitch d2.
  • the arc-shaped display substrate 11 after being bonded to the arc-shaped backplane 12 has the feature that the pixel pitch d3 in the edge area 11b is small, and the pixel pitch d2 in the central area 11a is large, it can The edge distortion phenomenon of the display substrate 11 during observation is improved.
  • the relationship between the second pixel pitch d2 and the first pixel pitch d1 can be specifically referred to the relationship mentioned in the manufacturing method of the display device 10 in the foregoing embodiment, which will not be described in detail here.
  • the arc-shaped back plate 12 has an inner arc surface 12a close to the arc-shaped display structure and an outer arc surface 12b away from the arc-shaped display structure.
  • the shapes are the same, and the inner arc surface 12a and the outer arc surface 12b are one of a circular arc shape, an elliptical arc shape, or a parabolic shape.
  • the included angle ⁇ of the tangents corresponding to the two ends of the outer arc surface 12b in the bending direction is less than 180° and greater than or equal to 170°; for example: 170°, 172°, 174 °, 176°, 178° and so on.
  • the overall shape of the arc-shaped display structure formed after the display substrate 11 is attached to the arc-shaped back plate 12 may be the same as the shape of the arc-shaped back plate 12.
  • the display device 10 may be a wearable device; for example, the display device 10 may be a head-mounted display device 10, such as VR glasses. But not limited to this, the display device 10 can also be an OLED display, a mobile device such as a mobile phone, a notebook computer, a wearable device such as a watch, a digital photo frame, a navigator, etc., any product or component with a display function. Those skilled in the art The selection can be made according to the specific purpose of the display device, which will not be repeated here.
  • the display device 10 in addition to the arc-shaped backplane 12 and the arc-shaped display substrate 11 (ie: arc-shaped display structure), the display device 10 also includes other necessary components and components. Take the display as an example, such as a housing. , Power lines, driver chips, etc., those skilled in the art can make corresponding supplements according to the specific usage requirements of the display device 10, which will not be repeated here.

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Abstract

一种显示基板（11）、显示装置（10）及其制作方法。所述显示基板（11）具有中心区域（11a）和边缘区域（11b），且显示基板（11）包括多个阵列排布在中心区域（11a）和边缘区域（11b）的结构单元（110）；每个结构单元（110）开设有多个贯穿孔（111），且多个贯穿孔（111）划分出用于显示的像素岛（112）和用于传输信号的桥部（113）；多个贯穿孔（111）环绕像素岛（112）设置；桥部（113）中的一部分位于像素岛（112）与贯穿孔（111）之间，另一部分位于相邻贯穿孔（111）之间；其中，边缘区域（11b）的结构单元（110）中相邻像素岛（112）的像素间距与中心区域（11a）的结构单元（110）中相邻像素岛（112）的像素间距相等，且均为第一像素间距（d1）。所述显示基板（11）具有一定的可拉伸功能，拉伸后的显示基板（11）可应用于头戴式显示设备中，可改善在观察头戴式显示设备时出现的边缘畸变现象。

Description

显示基板、显示装置及其制作方法
交叉引用
本公开要求于2020年5月29日提交的申请号为202010476101.1名称为“显示基板、显示装置及其制作方法”的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本公开涉及显示技术领域，具体而言，涉及一种显示基板、显示装置及其制作方法。
背景技术
随着显示技术的发展，能够进行柔性显示的有机发光二极管(organic light-emitting diode，简称OLED)促进了显示的多样化，逐渐成为显示技术的主流。在一些相关技术中，OLED柔性显示装置能够满足二维面的弯折，但不适用于情况更复杂的显示装置(例如：头戴式显示设备等)对于显示基板的柔性需求。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
公开内容
本公开的目的在于克服上述现有技术的不足，提供一种显示基板、显示装置及其制作方法。
根据本公开的一个方面，提供了一种显示基板，所述显示基板具有中心区域和边缘区域，且所述显示基板包括多个阵列排布在所述中心区域和所述边缘区域的结构单元；
每个所述结构单元开设有多个贯穿孔，且多个所述贯穿孔划分出用于显示的像素岛和用于传输信号的桥部；多个所述贯穿孔环绕所述像素岛设置；所述桥部中的一部分位于所述像素岛与所述贯穿孔之间，另一 部分位于相邻所述贯穿孔之间；
其中，所述边缘区域的结构单元中相邻像素岛的像素间距与所述中心区域的结构单元中相邻像素岛的像素间距相等，且均为第一像素间距。
在本公开的一种示例性实施例中，所述贯穿孔具有第一长条形孔和位于所述第一长条形孔相对两端的第二长条形孔，所述第一长条形孔与所述第二长条形孔相连通；所述第一长条形孔的长度方向与所述第二长条形孔的长度方向相交，且所述第一长条形孔的中心点与所述第二长条形孔的中心点在同一条直线上；其中，第一长条形孔的长度大于所述第二长条形孔的长度。
在本公开的一种示例性实施例中，所述第一长条形孔的长度与所述第二长条形孔的长度之间的差值为150μm至200μm。
在本公开的一种示例性实施例中，所述第一长条形孔的长度为400μm至1000μm；所述第二长条形孔的长度为220μm至820μm。
在本公开的一种示例性实施例中，所述第一长条形孔和所述第二长条形孔的宽度相等。
在本公开的一种示例性实施例中，所述第一长条形孔和所述第二长条形孔的宽度为5μm至50μm。
在本公开的一种示例性实施例中，所述结构单元中设置有四个在第一方向上和第二方向上阵列排布的所述像素岛，每个所述像素岛的周围环绕有四个所述贯穿孔；其中，
在所述第一方向上相对的两贯穿孔的第一长条形孔的长度方向为第二方向，在所述第二方向上相对两贯穿孔的第一长条形孔的长度方向为第一方向，且相邻贯穿孔中一者的第二长条形孔与另一者的第一长条形孔的中间区域相对。
在本公开的一种示例性实施例中，所述第一像素间距为第一长条形孔的长度与第二长条形孔的长度之和的二分之一。
根据本公开的另一个方面，提供了一种显示装置的制作方法，其包括：
提供一基底，所述基底上开设有多个孔区；
在所述基底上形成显示基板，所述显示基板为上述任一项所述的显 示基板，所述显示基板的贯穿孔与所述基底的孔区一一对应；
将所述显示基板与所述基底进行分离；
将分离后的所述显示基板贴合在弧形背板上，以使显示基板弧形显示结构为弧形显示结构；
其中，在所述显示基板为弧形显示结构时，其中心区域的结构单元中相邻像素岛的像素间距为第二像素间距，其边缘区域的结构单元中相邻像素岛的像素间距为第三像素间距，所述第三像素间距大于所述第一像素间距，且小于所述第二像素间距。
在本公开的一种示例性实施例中，所述第二像素间距与所述第一像素间距之间的差值为10μm至100μm。
在本公开的一种示例性实施例中，将所述显示基板与所述基底进行分离，包括：
采用激光分离、化学刻蚀分离或物理机械分离等方式将所述显示基板与所述基底进行分离。
在本公开的一种示例性实施例中，将分离后的所述显示基板贴合在弧形背板上，包括：
将分离后的所述显示基板的中心区域与所述弧形背板的中心区域进行贴合；
利用滚筒从所述显示基板的中心区域向所述显示基板的边缘区域滚动，以使所述显示基板的边缘区域与所述弧形背板的中心区域进行贴合。
根据本公开的再一个方面，提供了一种显示装置，包括弧形背板和贴合在所述弧形背板上的弧形显示结构，所述弧形显示结构为上述任一项所述的显示基板经与所述弧形背板贴合后而形成的结构；
其中，在所述弧形显示结构中，其中心区域的结构单元中相邻像素岛的像素间距为第二像素间距，其边缘区域的结构单元中相邻像素岛的像素间距为第三像素间距，所述第三像素间距大于所述第一像素间距，且小于所述第二像素间距。
在本公开的一种示例性实施例中，所述第二像素间距与所述第一像素间距之间的差值为10μm至100μm。
在本公开的一种示例性实施例中，所述弧形背板具有靠近所述弧形 显示结构的内弧面和远离所述弧形显示结构的外弧面，所述内弧面和所述外弧面的形状相同，所述内弧面和所述外弧面为圆弧型、椭圆弧型或抛物线型中的一种。
在本公开的一种示例性实施例中，所述外弧面在其弯曲方向上的两端所对应的切线的夹角小于180°，且大于或等于170°。
在本公开的一种示例性实施例中，所述显示装置为头戴式显示装置。
本公开的显示基板、显示装置及其制作方法，通过在显示基板的中心区域和边缘区域均设置具有多个贯穿孔的结构单元，使得该显示基板整体具有一定的拉伸功能，可以用于头戴式显示设备中；此外，在将此可拉伸的显示基板贴合在一定弧度的背板上时，由于本公开的显示基板具有特定的结构单元，因此，使得拉伸过程中不同区域拉伸量不同，即：边缘区域拉伸量小于中心区域拉伸量，从而使得边缘区域中相邻像素岛的像素间距小于中心区域中相邻像素岛的像素间距；由于与弧形背板贴合后的显示基板具有边缘区域像素间距小，而中心区域像素间距大的特点，因此，可改善显示装置在观察时出现的边缘畸变现象。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为相关技术中所述的显示基板与透镜之间的光路图。
图2为本公开实施例的显示基板在未拉伸状态下的侧视结构示意图。
图3为图2中一实施例所示出的显示基板中边缘区域或中心区域的结构单元中各部分的位置示意图。
图4为图3中一实施例所示出的显示基板中贯穿孔的结构示意图。
图5为图2中另一实施例所示出的显示基板中边缘区域或中心区域的结构单元中各部分的位置示意图。
图6为图5中所示出的四个结构单元的位置示意图。
图7为本公开实施例所述的显示装置的侧视结构示意图。
图8为图7中呈弧形的显示基板中中心区域的一结构单元中各部分的位置示意图。
图9为图7中呈弧形的显示基板中边缘区域的一结构单元中各部分的位置示意图。
图10为本公开一实施例所述的呈弧形的显示基板的仿真效果图。
图11为图10中示出的呈弧形的显示基板的中心区域中A处放大后的仿真效果图。
图12为图10中示出的呈弧形的显示基板的边缘区域中B处放大后的仿真效果图。
图13为本公开一实施例所述的呈弧形的显示基板与透镜之间的光路图。
图14为本公开一实施例所述的显示装置的制作方法的流程图。
附图标记说明：
10、显示装置；11、显示基板；11a、中心区域；11b、边缘区域；110、结构单元；111、贯穿孔；1111、第一长条形孔；1112、第二长条形孔；112、像素岛；113、桥部；1131、隔离结构；12、弧形背板；13、透镜。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。
需要说明的是，本文中所述的“在……上”、“在……上形成”和“设置在……上”可以表示一层直接形成或设置在另一层上，也可以表 示一层间接形成或设置在另一层上，即两层之间还存在其它的层。
用语“一个”、“一”、“该”、“所述”和“至少一个”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等。
需要说明的是，虽然术语“第一”、“第二”等可以在此用于描述各种部件、构件、元件、区域、层和/或部分，但是这些部件、构件、元件、区域、层和/或部分不应受到这些术语限制。而是，这些术语用于将一个部件、构件、元件、区域、层和/或部分与另一个相区分。
图1示出了相关技术中提到的显示基板11与透镜13之间的光路图；相关技术中，应用在头戴式显示装置中的显示基板11，该显示基板11呈弧形，且显示基板11的边缘区域11b中相邻像素岛112的像素间距与其中心区域11a中相邻像素岛112的像素间距相同，这样在观察时边缘畸变现象严重，需要说明的是，图1中虚线箭头表示为光路。
为此，本公开一实施例提供了一种显示基板11，如图2所示，显示基板11具有中心区域11a和边缘区域11b，如图3至图5所示，且显示基板11包括多个阵列排布在中心区域11a和边缘区域11b的结构单元110；如图3和图4所示，每个结构单元110开设有多个贯穿孔111，应当理解的是，此贯穿孔111在显示基板11的厚度方向上贯穿整个显示基板11。且多个贯穿孔111划分出用于显示的像素岛112和用于传输信号的桥部113；桥部113内包括多条传输信号的信号走线，每个像素岛112内可包括多个像素，比如：红色(R)像素、绿色(G)像素、蓝色(B)像素等等，且每个像素可包括显示器件，此显示器件可为OLED显示，且该显示器件可与信号走线电连接来进行发光显示。
其中，如图3和图4所示，每个结构单元110中多个贯穿孔111环绕像素岛112设置；且桥部113中的一部分位于像素岛112与贯穿孔111之间，另一部分位于相邻贯穿孔111之间；且应当理解的是，显示基板11中边缘区域11b的结构单元110中相邻像素岛112的像素间距与中心区域11a的结构单元110中相邻像素岛112的像素间距相等，且均为第一像素间距d1。
在本公开的实施例中，通过在显示基板11的中心区域11a和边缘区域11b均设置具有多个贯穿孔111的结构单元110，使得该显示基板11整体具有一定的拉伸功能，可以用于头戴式显示设备中；此外，如图7所示，在将此可拉伸的显示基板11贴合在具有一定弧度的弧形背板12上时，由于本公开的显示基板11具有特定的如图3至图5所示的结构单元110，因此，使得拉伸过程中不同区域拉伸量不同，即：边缘区域11b拉伸量小于中心区域11a拉伸量，如图8至图12所示，从而使得边缘区域11b中相邻像素岛112的像素间距d3小于中心区域11a中相邻像素岛112的像素间距d2；由于与弧形背板12贴合后的显示基板11(即：显示基板11为弧形显示结构)具有边缘区域11b像素间距d3小，而中心区域11a像素间距d2大的特点，因此，相比于相关技术中提到的方案，可改善显示装置10在观察时出现的边缘畸变现象，图13示出了本公开实施例所述的呈弧形的显示基板11与透镜13之间的光路图，需要说明的是，图13中虚线箭头表示为光路。
此外，还需要说明的是，像素(Pixel)是组成数字图像的最小单元，即一个一个彩色的颜色点；而像素间距(Pixel pitch)指显示基板中相邻像素岛中相同像素点之间的距离，例如：每个像素岛包括水平排列的红色像素、绿色像素、蓝色像素，则像素间距指的是相邻像素岛中红色像素(绿色像素、蓝色像素)之间的水平距离。此外，应当理解的是，由于像素实际上时方形，因此，包括水平排列的红色像素、绿色像素、蓝色像素的像素岛也可呈方形，但像素岛的形状不限于此，也可为六边形等，视像素岛中像素的个数和排列形式而定。
下面结合附图对本公开实施例的显示基板11中特定的结构单元110进行详细说明。
在一些实施例中，如图3和图4所示，结构单元110中的贯穿孔111具有第一长条形孔1111和位于第一长条形孔1111相对两端的第二长条形孔1112，第一长条形孔1111与第二长条形孔1112相连通，并与第二长条形孔1112的中间区域相对应；即：第一长条形孔1111的长度方向与第二长条形孔1112的长度方向相交，且第一长条形孔1111的中心点与第二长条形孔1112的中心点在同一条直线上；如图4所示，贯穿孔 111可以“工”字型结构排布。
其中，如图4所示，贯穿孔111中第一长条形孔1111的长度L1大于第二长条形孔1112的长度L2。可选地，第一长条形孔1111的长度L1与第二长条形孔1112的长度L2之间的差值约为150μm至200μm，比如：150μm、160μm、170μm、180μm、190μm、200μm等等。
具体地，第一长条形孔1111的长度L1约为400μm至1000μm；比如：400μm、600μm、800μm、1000μm等等。第二长条形孔1112的长度L2约为220μm至820μm；比如：220μm、420μm、620μm、820μm等等。
在一些实施例中，贯穿孔111中第一长条形孔1111的宽度W1和第二长条形孔1112的宽度W2相等。可选地，第一长条形孔1111的宽度W1和第二长条形孔1112的宽度W2约为5μm至50μm，比如：5μm、14μm、23μm、32μm、41μm、50μm等等。
在一些实施例中，如图3所示，每个结构单元110中可设置有四个在第一方向X上和第二方向Y上阵列排布的像素岛112，且每个像素岛112的周围环绕有四个贯穿孔111；此贯穿孔111为前述实施例中提到的“工”字型结构；其中，在第一方向X上相对的两贯穿孔111(即：位于像素岛112在第一方向X上相对两侧的贯穿孔111)的第一长条形孔1111的长度方向为第二方向Y；在第二方向Y上相对两贯穿孔111(即：位于像素岛112在第二方向Y上相对两侧的贯穿孔111)的第一长条形孔1111的长度方向为第一方向X，且每个像素岛112周围相邻贯穿孔111中一者的第二长条形孔1112与另一者的第一长条形孔1111的中间区域相对。
应当理解的是，如图3、图5和图6所示，每个结构单元110中相邻像素岛112可共用部分贯穿孔111，如图6所示，且相邻结构单元110也可共用部分贯穿孔111。
在一些实施例中，结构单元110中相邻像素岛112的第一像素间距d1为第一长条形孔1111的长度L1与第二长条形孔1112的长度L2之和的二分之一。
基于上述特定的结构单元110的设计，本公开实施例的显示基板11 在与弧形背板12贴合的过程中会受到一定的拉伸，且显示基板11中不同区域拉伸量不同，即：边缘区域11b拉伸量小于中心区域11a拉伸量，从而使得边缘区域11b中相邻像素岛112的像素间距d3小于中心区域11a中相邻像素岛112的像素间距d2；由于与弧形背板12贴合后的显示基板11具有边缘区域11b像素间距d3小，而中心区域11a像素间距d2大的特点，因此，可改善显示装置10在观察时出现的边缘畸变现象。
需要说明的是，由于显示基板11中的显示器件为OLED显示，因此，为了避免水氧顺着贯穿孔111处的有机发光材料进入像素岛112中显示器件内而导致无法正常显示的情况，如图5和图6所示，本公开实施例中还可在贯穿孔111的周围环绕设置隔离结构1131，此隔离结构1131可位于桥部113中，此隔离结构1131可对有机发光材料进行隔断，以避免水氧顺着贯穿孔111处有机发光材料进入到像素岛112中显示器件中，从而保证显示基板11的显示效果。
本公开实施还提供了一种显示装置的制作方法，该显示装置整体可为具有一定弧度的弧形结构，其中，如图14所示，其制作方法可包括：
步骤S100、提供一基底，基底上开设有多个孔区；
步骤S102、在基底上形成显示基板，该显示基板为任一实施例所描述的如图2至6所示的显示基板11，在此不再对显示基板11的具体结构进行赘述，需要说明的是，显示基板11的贯穿孔111与基底的孔区一一对应；
步骤S104、将显示基板与基底进行分离；
步骤S106、将分离后的显示基板贴合在弧形背板上，以使显示基板为弧形显示结构，如图7至图9所示；
其中，在显示基板11为弧形显示结构时，如图7至图12所示，其中心区域11a的结构单元110中相邻像素岛112的像素间距为第二像素间距d2，其边缘区域11b的结构单元110中相邻像素岛112的像素间距为第三像素间距d3，第三像素间距d3大于第一像素间距d1(如图3和图5所示)，且小于第二像素间距d2。
在一些实施例中，第二像素间距d2与第一像素间距d1之间的差值可为10μm至100μm，比如：10μm、40μm、70μm、100μm等等。
其中，在步骤S100中，提供一基底，此基底上开设有多个孔区。举例而言，基底可为可变形膜层，此可变形膜层可采用高弹性且进行了褶皱处理的有机膜层等结构，此有机膜层具有多个孔区；但不限于此，此基底也可为刚性基底，例如：玻璃基底等等，视具体情况而定。
其中，在步骤S102中，在基底上形成显示基板11，如图2至6所示。举例而言，可采用沉积、溅射、蒸镀等工艺在基底上的非孔区上形成驱动电路和有机发光器件，此驱动电路可包括薄膜晶体管、存储电容、信号走线等；有机发光器件可包括依次形成的阳极、有机发光材料和阴极等等，此有机发光器件可与薄膜晶体管和信号走线电连接。此显示基板11的具体结构参考前述任一实施例所描述的形式，在此不做赘述。
其中，在步骤S104中，将显示基板11与基底进行分离。举例而言，可采用激光分离、化学刻蚀分离或物理机械分离等方式将显示基板11与基底进行分离。
其中，在步骤S106中，将分离后的显示基板11贴合在弧形背板12上，以使显示基板11为弧形显示结构，如图7至图9所示；具体可包括步骤S1060和步骤S1062，具体地：
在步骤S1060中，将分离后的显示基板11的中心区域11a与弧形背板12的中心区域11a进行贴合。举例而言，此弧形背板12可为刚性基板，例如：玻璃基板等，但不限于此，也可为其他材料。
在步骤S1062中，利用滚筒从显示基板11的中心区域11a向显示基板11的边缘区域11b滚动，以使显示基板11的边缘区域11b与弧形背板12的中心区域11a进行贴合，即可形成弧形的显示基板11。
在本公开的实施例中，采用上述方式将从基底上分离下来的显示基板11与弧形背板12进行贴合的过程中，可保证显示基板11与弧形背板12之间的贴合效果，避免显示基板11与弧形背板12之间出现气泡的情况。
需要说明的是，本公开实施例不限于采用上述方式对显示基板11与弧形背板12进行贴合，还可采用其他方式，视具体情况而定。
应当注意，尽管在附图中以特定顺序描述了本公开中方法的各个步骤，但是，这并非要求或者暗示必须按照该特定顺序来执行这些步骤， 或是必须执行全部所示的步骤才能实现期望的结果。附加的或备选的，可以省略某些步骤，将多个步骤合并为一个步骤执行，以及/或者将一个步骤分解为多个步骤执行等。此外，上面的一些步骤可以并行执行或顺序执行等等，并不局限于上文描述的具体操作顺序。
本公开实施例有提供一种显示装置，可采用上述任一实施例所描述的制作方法制作而成，如图7所示，此显示装置10可包括弧形背板12和贴合在弧形背板12上的弧形显示结构，此弧形显示结构为上述任一实施例所描述的显示基板11经与弧形背板12贴合后而形成的结构，如图7至图9所示，弧形显示结构(即：弧形的显示基板11)包括多个阵列排布在中心区域11a和边缘区域11b的结构单元110；每个结构单元110开设有多个贯穿孔111，且多个贯穿孔111划分出用于显示的像素岛112和用于传输信号的桥部113；多个贯穿孔111环绕像素岛112设置；桥部113中的一部分位于像素岛112与贯穿孔111之间，另一部分位于相邻贯穿孔111之间；其中，图10示出了本公开实施例的呈弧形的显示基板11(即：弧形显示结构)的仿真效果图；在弧形显示结构中，其中心区域11a的结构单元110中相邻像素岛112的像素间距为第二像素间距d2，如图8、图10和图11所示；其边缘区域11b的结构单元110中相邻像素岛112的像素间距为第三像素间距d3，具体如图9、图10和图12所示；第三像素间距d3小于第二像素间距d2。应当理解的是，在显示基板11未与弧形背板12贴合，即：未呈完全状态时的第一像素间距d1小于第三像素间距d3和第二像素间距d2。
本公开实施例的显示装置10，由于与弧形背板12贴合后的呈弧形的显示基板11具有边缘区域11b像素间距d3小，而中心区域11a像素间距d2大的特点，因此，可改善显示基板11在观察时出现的边缘畸变现象。
其中，第二像素间距d2与第一像素间距d1之间的关系具体可参考前述实施例中显示装置10的制作方法中所提到的关系，在此不在详细赘述。
在一些实施例中，如图7所示，弧形背板12具有靠近弧形显示结构的内弧面12a和远离弧形显示结构的外弧面12b，内弧面12a和外弧面 12b的形状相同，且内弧面12a和外弧面12b为圆弧型、椭圆弧型或抛物线型中的一种。可选地，如图7所示，外弧面12b在其弯曲方向上的两端所对应的切线的夹角θ小于180°，且大于或等于170°；比如：170°、172°、174°、176°、178°等等。
应当理解的是，显示基板11在与弧形背板12贴合后形成的弧形显示结构，其整体的形状可与弧形背板12的形状相同。
在一些实施例中，该显示装置10可为可穿戴设备；举例而言，此显示装置10可为头戴式显示装置10，例如：VR眼镜等等。但不限于此，该显示装置10也可为OLED显示屏、手机、笔记本电脑等移动装置、手表等可穿戴设备、数码相框、导航仪等等任何具有显示功能的产品或部件，本领域技术人员可根据该显示设备的具体用途进行相应地选择，在此不再赘述。
需要说明的是，该显示装置10除了弧形背板12和呈弧形的显示基板11(即：弧形显示结构)以外，还包括其他必要的部件和组成，以显示器为例，具体例如外壳、电源线，驱动芯片等等，本领域技术人员可根据该显示装置10的具体使用要求进行相应地补充，在此不再赘述。
本领域技术人员在考虑说明书及实践这里公开的内容后，将容易想到本公开的其他实施例。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由权利要求指出。

Claims (17)

  1. 一种显示基板，其中，所述显示基板具有中心区域和边缘区域，且所述显示基板包括多个阵列排布在所述中心区域和所述边缘区域的结构单元；
    每个所述结构单元开设有多个贯穿孔，且多个所述贯穿孔划分出用于显示的像素岛和用于传输信号的桥部；多个所述贯穿孔环绕所述像素岛设置；所述桥部中的一部分位于所述像素岛与所述贯穿孔之间，另一部分位于相邻所述贯穿孔之间；
    其中，所述边缘区域的结构单元中相邻像素岛的像素间距与所述中心区域的结构单元中相邻像素岛的像素间距相等，且均为第一像素间距。
  2. 根据权利要求1所述的显示基板，其中，
    所述贯穿孔具有第一长条形孔和位于所述第一长条形孔相对两端的第二长条形孔，所述第一长条形孔与所述第二长条形孔相连通；所述第一长条形孔的长度方向与所述第二长条形孔的长度方向相交，且所述第一长条形孔的中心点与所述第二长条形孔的中心点在同一条直线上；
    其中，第一长条形孔的长度大于所述第二长条形孔的长度。
  3. 根据权利要求2所述的显示基板，其中，所述第一长条形孔的长度与所述第二长条形孔的长度之间的差值为150μm至200μm。
  4. 根据权利要求3所述的显示基板，其中，所述第一长条形孔的长度为400μm至1000μm；所述第二长条形孔的长度为220μm至820μm。
  5. 根据权利要求2所述的显示基板，其中，所述第一长条形孔和所述第二长条形孔的宽度相等。
  6. 根据权利要求5所述的显示基板，其中，所述第一长条形孔和所述第二长条形孔的宽度为5μm至50μm。
  7. 根据权利要求2至6中任一项所述的显示基板，其中，
    所述结构单元中设置有四个在第一方向上和第二方向上阵列排布的所述像素岛，每个所述像素岛的周围环绕有四个所述贯穿孔；其中，
    在所述第一方向上相对的两贯穿孔的第一长条形孔的长度方向为第二方向，在所述第二方向上相对两贯穿孔的第一长条形孔的长度方向为 第一方向，且相邻贯穿孔中一者的第二长条形孔与另一者的第一长条形孔的中间区域相对。
  8. 根据权利要求7所述的显示基板，其中，所述第一像素间距为第一长条形孔的长度与第二长条形孔的长度之和的二分之一。
  9. 一种显示装置的制作方法，其中，包括：
    提供一基底，所述基底上开设有多个孔区；
    在所述基底上形成显示基板，所述显示基板为前述权利要求1至8中任一项所述的显示基板，所述显示基板的贯穿孔与所述基底的孔区一一对应；
    将所述显示基板与所述基底进行分离；
    将分离后的所述显示基板贴合在弧形背板上，以使显示基板为弧形显示结构；
    其中，在所述显示基板为弧形显示结构时，其中心区域的结构单元中相邻像素岛的像素间距为第二像素间距，其边缘区域的结构单元中相邻像素岛的像素间距为第三像素间距，所述第三像素间距大于所述第一像素间距，且小于所述第二像素间距。
  10. 根据权利要求9所述的制作方法，其中，所述第二像素间距与所述第一像素间距之间的差值为10μm至100μm。
  11. 根据权利要求10所述的制作方法，其中，将所述显示基板与所述基底进行分离，包括：
    采用激光分离、化学刻蚀分离或物理机械分离等方式将所述显示基板与所述基底进行分离。
  12. 根据权利要求10所述的制作方法，其中，将分离后的所述显示基板贴合在弧形背板上，包括：
    将分离后的所述显示基板的中心区域与所述弧形背板的中心区域进行贴合；
    利用滚筒从所述显示基板的中心区域向所述显示基板的边缘区域滚动，以使所述显示基板的边缘区域与所述弧形背板的中心区域进行贴合。
  13. 一种显示装置，其中，包括弧形背板和贴合在所述弧形背板上的弧形显示结构，所述弧形显示结构为权利要求1至8中任一项所述的 显示基板经与所述弧形背板贴合后而形成的结构；
    其中，在所述弧形显示结构中，其中心区域的结构单元中相邻像素岛的像素间距为第二像素间距，其边缘区域的结构单元中相邻像素岛的像素间距为第三像素间距，所述第三像素间距大于所述第一像素间距，且小于所述第二像素间距。
  14. 根据权利要求13的显示装置，其中，所述第二像素间距与所述第一像素间距之间的差值为10μm至100μm。
  15. 根据权利要求13的显示装置，其中，所述弧形背板具有靠近所述弧形显示结构的内弧面和远离所述弧形显示结构的外弧面，所述内弧面和所述外弧面的形状相同，所述内弧面和所述外弧面为圆弧型、椭圆弧型或抛物线型中的一种。
  16. 根据权利要求15的显示装置，其中，所述外弧面在其弯曲方向上的两端所对应的切线的夹角小于180°，且大于或等于170°。
  17. 根据权利要求13所述的显示装置，其中，所述显示装置为头戴式显示装置。
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