WO2022012228A1 - 显示面板和显示装置 - Google Patents

显示面板和显示装置 Download PDF

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Publication number
WO2022012228A1
WO2022012228A1 PCT/CN2021/098968 CN2021098968W WO2022012228A1 WO 2022012228 A1 WO2022012228 A1 WO 2022012228A1 CN 2021098968 W CN2021098968 W CN 2021098968W WO 2022012228 A1 WO2022012228 A1 WO 2022012228A1
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WO
WIPO (PCT)
Prior art keywords
area
substrate
mark
marks
display panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/098968
Other languages
English (en)
French (fr)
Inventor
周洋
韩林宏
杨慧娟
于鹏飞
和玉鹏
张鑫
白露
尚庭华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US17/920,911 priority Critical patent/US12164339B2/en
Publication of WO2022012228A1 publication Critical patent/WO2022012228A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof

Definitions

  • the present application relates to the field of display technology, and in particular, to a display panel and a display device.
  • the back film is removed from the display panel; however, in order to reduce the frame width of the display panel, it is easy to cause the heat affected zone of the removed back film to interfere with the precision reference of the removed back film, and The thickness of the back film structure in the heat-affected zone is not uniform, which will cause abnormal correction of the back film removal accuracy, affect the back film removal accuracy, and affect the product quality and the yield rate of display panel bending.
  • the present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a display panel, which is convenient for realizing the normal correction of the back film removal accuracy, ensures the back film removal accuracy, and effectively improves the product yield.
  • the present application also proposes a display device having the above-mentioned display panel.
  • the display panel includes a display area and a non-display area surrounding the display area, the non-display area includes a bending control area, the bending control area and the display area spaced and including a bending area and a control area, the control area includes a first control area and a second control area, the first control area is located between the display area and the bending area, the second control area The control area is located on the side of the bending area away from the display area.
  • the display panel includes: a substrate; a multi-layer insulating layer, the multi-layer insulating layer is arranged on one side of the substrate, and the multi-layer insulating layer There is a concave part thereon, the concave part is located in the non-display area, and at least part of the orthographic projection of the concave part on the substrate is located in the bending area, and a filler is arranged in the concave part; a back film structure, the back film structure is arranged on the side of the substrate facing away from the multi-layer insulating layer, and the thickness of the back film structure in the display area is smaller than that in the control area The thickness of the back film structure is greater than the thickness of the back film structure located in the bending area, wherein the display panel has a mark, the mark is located in the non-display area, and is spaced around the recessed portion, so The mark is suitable as a calibration reference for the bending zone.
  • the mark is located in the non-display area, and the marks are arranged around the recessed part at intervals, so that the mark can be used as a calibration reference for the bending area, thereby effectively ensuring that the mark is removed from the back film. It can be recognized normally during the accuracy calibration process, which ensures the accuracy of removing the back film of the display panel, improves the bending accuracy of the display panel, and ensures the yield, so that the display panel can better meet the needs of further reduction of the frame.
  • a first boundary is formed between the bending area and the first control area
  • a second boundary is formed between the bending area and the second control area
  • the markings are a plurality of and includes: a first mark, the first mark is provided at intervals on the side of the recessed part close to the display area, the first mark is suitable as a calibration reference for the first boundary; a second mark, The second marks are arranged at intervals on a side of the recessed portion away from the display area, and the second marks are suitable for serving as a calibration reference for the second boundary.
  • the marking is adapted to serve as a calibration reference for the depression.
  • the recessed portion has a third boundary and a fourth boundary disposed opposite to each other, the markings are plural and include: first markings, the first markings are arranged at intervals near the recessed portion. one side of the display area, the first mark is suitable as a calibration reference for the third boundary; the second mark, the second marks are arranged at intervals on the side of the recessed portion away from the display area, The second mark is suitable as a correction reference for the fourth boundary.
  • the display panel further includes a signal line layer located on a side of the recessed portion away from the substrate, and in the bending region, the signal line layer is disposed between the substrate and the filler between the components, the orthographic projection of the recessed portion on the substrate is located in the orthographic projection of the signal line layer on the substrate, and the signal line layer is electrically connected to the data lines of the display area.
  • the concave portion includes a plurality of grooves stacked in sequence along a direction perpendicular to the substrate, and the filler is filled in the plurality of grooves.
  • the marks are spaced around the signal line layer, and the orthographic projection of the marks on the substrate does not overlap with the orthographic projection of the signal line layer on the substrate; or, the The mark is located on the side of the signal line layer close to the substrate, the orthographic projection of the mark on the substrate is located within the orthographic projection range of the signal line layer on the substrate, and the mark is on the orthographic projection of the substrate.
  • the boundary and the boundary of the orthographic projection of the signal line layer are arranged at intervals; or, the signal line layer includes a plurality of connecting lines arranged at intervals, and the mark is arranged on a portion of the signal line layer close to the substrate. side, and the orthographic projection of the mark on the substrate is located between the orthographic projections of the two adjacent connecting lines on the substrate.
  • the bending area extends along the boundary direction of the display area, the markings are plural, and the markings are arranged at intervals along the extending direction of the bending area.
  • the indicia are located in the multi-layer insulating layer.
  • the indicia is formed in an L shape, a cross shape, a polygon shape, a circle shape, or an oval shape.
  • a display device includes the display panel according to the above-mentioned first aspect of the present application.
  • the display device of the present application by using the above-mentioned display panel, it is convenient to better meet the requirement of further reduction of the frame.
  • FIG. 1 is a cross-sectional view of a display panel according to an embodiment of the present application.
  • Fig. 2 is another schematic diagram of the display panel shown in Fig. 1;
  • FIG. 3 is a cross-sectional view of a display panel according to another embodiment of the present application.
  • Fig. 4 is another schematic diagram of the display panel shown in Fig. 3;
  • FIG. 5 is a schematic diagram of a display panel according to still another embodiment of the present application.
  • Display area R1 non-display area R2, bending control area R21,
  • control area R212 first control area R212a, second control area R212b,
  • the insulating layer 2 the recessed portion 21, the third boundary S3, the fourth boundary S4, the stepped structure 210,
  • Signal line layer 6 connection line 61 , data line 8 .
  • the display panel 100 may be a flexible display panel, but is not limited thereto.
  • the display panel 100 includes a display area R1 and a non-display area R2 surrounding the display area R1, the non-display area R2 is located at the periphery of the display area R1, and the non-display area R2 includes a bending control area R21,
  • the bending control area R21 is spaced from the display area R1
  • the bending control area R21 includes a bending area R211 and a control area R212
  • the control area R212 includes a first control area R212a and a second control area R212b
  • the first control area R212a is located in the Between the display area R1 and the bending area R211, the first control area R212a is located on the side of the bending area R211 close to the display area R1, and the second control area R212b is located on the side of the bending area R211 away from the display area R1.
  • the display panel 100 may have a formed state.
  • the bending region R211 is bent to form a bending portion, so that a part of the non-display region R2 is located below the display region R1, that is, a part of the non-display region R2 is located in the display region R1. Therefore, the width of the frame of the display panel 100 can be reduced, which facilitates the realization of a narrow frame design.
  • the radius corresponding to the bending portion is R
  • the length L of the bending region R211 in the bending direction is approximately ⁇ R.
  • the display panel 100 includes a substrate 1 and a multi-layer insulating layer 2.
  • the multi-layer insulating layer 2 is provided on one side of the substrate 1, and the insulating layer 2 has a concave portion 21, and the concave portion 21 is located in the non-display area. At least part of the orthographic projection of the recessed portion 21 on the substrate 1 is located in the bending region R211 , and the filler 4 is provided in the recessed portion 21 .
  • the multi-layer insulating layer 2 is provided on one side of the thickness direction of the substrate 1 (eg, CC′ direction in FIG.
  • the multi-layer insulating layer 2 is along the thickness direction of the substrate 1 .
  • at least part of the concave portion 21 and the bending region R211 are arranged opposite to each other along the thickness direction of the substrate 1 .
  • the display panel 100 further includes a back film structure 3, the back film structure 3 is arranged on the side of the substrate 1 facing away from the multilayer insulating layer 2, and the thickness of the back film structure 3 in the display region R1 is smaller than that in the control region R212. 3, and the thickness of the back film structure 3 located in the display region R1 is greater than the thickness of the back film structure 3 located in the bending region R211.
  • the thickness of the back film structure 3 located in the bending region R211 is relatively small, and at least part of the orthographic projection of the recessed portion 21 on the substrate 1 is located in the bending region R211 , so the recessed portion 21 is along the thickness direction of the substrate 1 . At least part of the orthographic projection is located in the bending area R211, so that the thin back film structure 3 and the insulating layer 2 are retained in the bending area R211, and a filler 4 is arranged in the concave portion 21, which is convenient to control the bending area R211.
  • the circuit layer such as the signal line layer 6 is located in the "neutral layer", even if the circuit layer in the bending area R211 is located in the middle position in the thickness direction of the display panel 100, the bending area R211 ensures that the circuit layer is in the bending process.
  • the stress received is the smallest, which avoids damage (such as cracks, or disconnection, etc.) after the circuit layer is bent, and effectively ensures the reliability of the circuit layer.
  • the back film needs to be removed from the bending area R211 , that is, a part of the back film structure 3 located in the bending area R211 needs to be removed, so as to reduce the thickness of the back film structure 3 located in the bending area R211 .
  • the back film structure 3 can be an equal-thickness structure before removing the back film; in the process of removing the back film, for example, using a laser to remove the back film, a heat-affected zone will be formed on both sides of the bending region R211, and the back of the heat-affected zone will be formed.
  • the thickness of the film structure 3 is greater than the thickness of the back film structure 3 before the back film is removed, and the heat affected zone corresponds to a control zone R212.
  • the display panel 100 has a mark 5 , the mark 5 is located in the non-display area R2 , and the mark 5 is arranged around the recessed portion 21 at intervals, and the boundary between the mark 5 and the recessed portion 21 (for example, the following The third boundary S3 and the fourth boundary S4) are arranged at intervals, and the mark 5 is arranged on at least one side of the recessed portion 21, which includes the following situations: 1.
  • the mark 5 is arranged at intervals of the recessed portion 21 near the display area R1. 2.
  • the marks 5 are arranged at intervals on the side of the recessed portion 21 away from the display area R1; 3.
  • the side of the recessed portion 21 close to the display area R1 and the side of the recessed portion 21 away from the display area R1 are respectively provided with Mark 5.
  • the mark 5 is suitable as the calibration reference of the bending area R211, then the mark 5 is suitable as the precision reference of the boundary of the bending area R211, or the mark 5 is suitable as the precision reference for removing the back film, which can effectively ensure that the During the process of removing the back film accuracy, the mark 5 can be recognized normally, so as to ensure the normal correction of the back film removal accuracy of the display panel 100 , thereby improving the Bending accuracy (bending accuracy) of the display panel 100 , improving product quality, and ensuring the display panel 100
  • the yield rate is high, and at the same time, it is convenient to ensure that the display panel 100 can better meet the needs of further reduction of the frame.
  • the marks 5 are arranged at intervals around the recessed portion 21, so that the marks 5 have enough space for setting the marks 5, and at the same time, it is convenient to make the marks 5 have a suitable size, so as to ensure the normal operation of the back film removal precision calibration process. identify.
  • the boundary of the concave portion 21 is used as the calibration reference for the bending region R211, that is, the distance between the boundary of the bending region R211 and the boundary of the concave portion 21 is monitored, and in the adaptation When the frame of the display panel 100 needs to be further reduced, the width of the recessed portion 21 is also reduced due to the further reduction of the frame, resulting in interference between the boundary between the heat-affected zone and the recessed portion 21.
  • the thickness of the back film is not uniform, so that during the process of removing the back film accuracy, the boundary of the recessed portion 21 is abnormally recognized, and the back film removal accuracy cannot be guaranteed, thereby affecting the bending yield of the display panel 100;
  • the markings 5 are set so that the markings 5 are arranged at intervals around the concave portion 21, so as to effectively ensure that the markings 5 can be recognized normally in the process of removing the back film precision, thereby ensuring the back film removal precision of the display panel 100 and improving the display panel.
  • the bending accuracy of 100 ensures the yield rate, so that the display panel 100 can better meet the needs of further reduction of the frame.
  • the area corresponding to the concave portion 21 is larger than the bending area R211 , the boundary of the concave portion 21 is located outside the corresponding boundary of the bending area R211 to ensure the circuit layer in the bending area R211 For example in the "neutral layer". Further, the area corresponding to the concave portion 21 may be larger than, equal to, or smaller than the bending control area R21 .
  • the filler 4 is MCL glue, that is, the material of the filler 4 is UV glue.
  • the thickness of the filler 4 can be specifically set according to the actual application.
  • a first boundary S1 is formed between the bending region R211 and the first control region R212a
  • a second boundary S2 is formed between the bending region R211 and the second control region R212b
  • the first boundary S1 is the boundary between the bending region R211 and the first control region R212a
  • the second boundary S2 is the boundary between the bending region R211 and the second control region R212b.
  • the plurality of marks 5 include a first mark 51 and a second mark 52
  • the first marks 51 are provided at intervals on the side of the recessed portion 21 close to the display area R1, and the first marks 51 are suitable for the first mark 51.
  • the second marks 52 are provided at intervals on the side of the recessed portion 21 away from the display area R1, and the second marks 52 are suitable as the calibration reference for the second boundary S2. Therefore, compared with the second mark 52 , the distance between the first mark 51 and the first boundary S1 is shorter, and it is convenient for the first mark 51 and the first boundary S1 to be located at the same time during the calibration process of the back film removal accuracy.
  • the distance between the second mark 52 and the second boundary S2 is shorter than that of the first mark 51 , so it is convenient to make the second mark 52 and the second boundary S2 are located in the correction field of view at the same time, so as to ensure the correction accuracy.
  • the mark 5 may further include a first mark 51 or a second mark 52; for example, when the mark 5 includes the first mark 51 and does not include the second mark 52, the first marks 51 are provided at intervals in the recessed portion 21 on the side close to the display area R1, at this time the first mark 51 is suitable as the calibration reference for the first edge S1 and the second edge S2; for another example, the mark 5 includes the second mark 52 and does not include the first mark 51 At this time, the second marks 52 are arranged at intervals on the side of the recessed portion 21 away from the display area R1 , and at this time, the second marks 52 are suitable as the calibration reference of the first edge S1 and the second edge S2 . Therefore, the markers 5 can be set flexibly, which facilitates the realization of various designs of the display panel 100 to better adapt to practical applications.
  • the mark 5 is suitable as a calibration reference for the concave portion 21
  • the mark 5 is suitable as a precision reference for the boundary of the concave portion 21 to ensure the positional accuracy of the concave portion 21
  • the mark 5 is suitable as a calibration reference for the bending region R211 and the concave portion 21 , which is beneficial to ensure the relative positional accuracy of the concave portion 21 and the bending region R211 and improve product quality.
  • the same mark 5 may be selected as the calibration reference for the bending region R211 and the recessed portion 21, or different marks 5 may be selected as the calibration reference.
  • the concave portion 21 has a third boundary S3 and a fourth boundary S4 arranged oppositely, the curved marks 5 are plural, and the plural marks 5 include the first mark 51 and The second marks 52 are arranged at intervals on the side of the recessed portion 21 close to the display area R1 , and the first marks 51 are suitable as the calibration reference for the third boundary S3 , and the second marks 52 are arranged at intervals in the recessed portion 21 The side far from the display area R1, and the second mark 52 is suitable as a calibration reference for the fourth boundary S4.
  • the distance between the first mark 51 and the third boundary S3 is shorter, and it is convenient for the first mark 51 and the third boundary S3 to be located in the correction field of view at the same time during the accuracy calibration process. , so as to ensure the correction accuracy; at the same time, compared with the first mark 51, the distance between the second mark 52 and the fourth boundary S4 is shorter, during the precision correction process, it is convenient to make the second mark 52 and the fourth boundary S4 at the same time. It is located within the correction field of view to ensure the correction accuracy.
  • the distance between the mark 5 and the boundary of the recessed portion 21 may be approximately 150 ⁇ m, for example, when the mark 5 includes the first mark 51 , the first mark 51 and the boundary of the side of the recessed portion 21 close to the display area R1 The distance between them is about 150 ⁇ m.
  • the distance between the second mark 52 and the boundary of the side of the recessed portion 21 away from the display area R1 is about 150 ⁇ m; of course, the mark 5
  • the interval with the boundary of the recessed portion 21 can also be set to other values according to practical applications.
  • the display panel 100 further includes a signal line layer 6 located on the side of the recessed portion 21 away from the substrate 1 , and the signal line layer 6 is electrically connected to the data lines 8 of the display region R1 , in the bending region R211, the signal line layer 6 is provided between the substrate 1 and the filler 4, for example, in the bending region R211, the recessed portion 21 penetrates through the multilayer insulating layer 2; If the projection is in the orthographic projection of the signal line layer 6 on the substrate 1 , the area corresponding to the signal line layer 6 is larger than the area corresponding to the recessed portion 21 , so as to realize the electrical connection between the signal line layer 6 and the data line 8 .
  • the marks 5 are arranged around the recessed portion 21 at intervals, and on this basis, the marks 5 can be arranged around the signal line layer 6 , and/or the marks 5 are located on the positive side of the substrate 1 .
  • the projection is located in the orthographic projection of the signal line layer 6 on the substrate 1, which includes the following situations: 1.
  • the marks 5 are arranged at intervals around the signal line layer 6 (as shown in Figures 3 and 4); 2.
  • the marks 5 are arranged at intervals between Around the recess 21, and the orthographic projection of the mark 5 on the substrate 1 is located in the orthographic projection of the signal line layer 6 on the substrate 1 (as shown in Figures 1 and 2); 3.
  • the orthographic projection of the signal line layer 6 on the substrate 1 Both inside and outside are marked 5.
  • the mark 5 includes first marks 51, and the first marks 51 are arranged at intervals on the side of the recessed portion 21 close to the display area R1, then the first marks 51 can be arranged at intervals on the side of the signal line layer 6 close to the display area R1 (as shown in FIG. 3 and FIG. 4 ); or the first marks 51 are arranged at intervals around the recessed portion 21, and the orthographic projection of the first marks 51 on the substrate 1 is located in the orthographic projection of the signal line layer 6 on the substrate 1 (such as 1 and 2).
  • the mark 5 includes second marks 52, and the second marks 52 are arranged at intervals on a side of the recessed portion 21 away from the display area R1, then the second marks 52 may be arranged at intervals on a side of the signal line layer 6 away from the display area R1 side (as shown in FIG. 3 and FIG. 4 ); or the second marks 52 are arranged at intervals around the recessed portion 21, and the orthographic projection of the second mark 52 on the substrate 1 is located in the orthographic projection of the signal line layer 6 on the substrate 1 ( as shown in Figures 1 and 2).
  • the position setting of the mark 5 is enriched, and an appropriate position can be selected according to the actual process and the like.
  • the concave portion 21 includes a plurality of grooves 211 stacked in sequence along a direction perpendicular to the substrate 1 , and one of the two adjacent grooves 211 is close to the substrate 1 .
  • 211 can be formed by a part of the bottom wall of another groove 211 concave, then at least one step structure 210 is respectively formed on the two side walls of the concave part 21 in the bending direction, and the filler 4 is filled in the plurality of grooves.
  • the recessed portion 21 includes a first groove 211 a and a second groove 211 b , and the second groove 211 b is located adjacent to the substrate 1 of the first groove 211 a
  • the boundaries of the first groove 211a correspond to the third boundary S3 and the fourth boundary S4 respectively; the marks 5 are located at the side of the third boundary 3 close to the display area R1 and/or at the distance from the fourth boundary S4.
  • the boundary S5 of the second groove is used as the calibration reference for the bending region R211, and when the frame of the display panel 100 is further reduced, the width of the recessed portion 21 is reduced due to the further reduction of the frame.
  • the subsequent reduction results in interference between the boundary S5 of the heat-affected zone and the second groove. Since the thickness of the back film structure 3 in the heat-affected zone is not uniform, during the process of removing the back film accuracy, the thickness of the second groove is not uniform.
  • the identification of the boundary S5 is abnormal, and the accuracy of removing the back film cannot be guaranteed, thereby affecting the bending yield of the display panel 100; in this application, by setting the mark 5 on the display panel 100, it is effectively ensured that the mark 5 can be removed during the correction of the back film accuracy. It can be recognized normally, thereby ensuring the precision of removing the back film of the display panel 100 .
  • the recessed portion 21 may penetrate through the insulating layer 2 in the thickness direction of the display panel 100 .
  • the recessed portion 21 includes a first groove 211a and a second groove 211b, the second groove 211b is located on the side of the first groove 211a adjacent to the substrate 1, and the second groove 211b through the multi-layer insulating layer 2 .
  • the multi-layer insulating layer 2 may comprise a multi-layer inorganic substrate.
  • the marks 5 are arranged around the signal line layer 6 at intervals, and the orthographic projection of the mark 5 on the substrate 1 does not overlap with the orthographic projection of the signal line layer 6 on the substrate 1 , then The orthographic projection of the mark 5 on the substrate 1 is completely separated from the orthographic projection of the signal line layer 6 on the substrate 1 .
  • the marks 5 are arranged around the signal line layer 6 at intervals, and the orthographic projection of the mark 5 on the substrate 1 does not overlap with the orthographic projection of the signal line layer 6 on the substrate 1 , then The orthographic projection of the mark 5 on the substrate 1 is completely separated from the orthographic projection of the signal line layer 6 on the substrate 1 .
  • the mark 5 is located on the side of the signal line layer 6 close to the substrate 1
  • the orthographic projection of the mark 5 on the substrate 1 is located on the orthographic projection of the signal line layer 6 on the substrate 1
  • the boundary of the orthographic projection of the mark 5 and the boundary of the orthographic projection of the signal line layer 6 on the substrate 1 are arranged at intervals, so as to ensure the effective identification of the mark 5 .
  • the signal line layer 6 includes a plurality of connecting lines 61 arranged at intervals, the mark 5 is arranged on the side of the signal line layer 6 close to the substrate 1 , and the mark 5 is on the positive side of the substrate 1 .
  • the projections are located between the orthographic projections of the two adjacent connecting lines 61 on the substrate 1, so as to ensure the effective identification of the mark 5; wherein, the arrangement of the connecting lines 61 can be specifically set according to practical applications. Therefore, the position of the marker 5 can be set flexibly, which facilitates the realization of various designs of the display panel 100 .
  • the marker 5 is located in the multilayer insulating layer 2 , for example, the marker 5 can be provided between any two adjacent insulating layers 2 in the multilayer insulating layer 2 , so as to facilitate the It is guaranteed that the mark 5 can be effectively recognized.
  • the mark 5 may be formed by etching, but is not limited thereto.
  • the mark 5 may be disposed on the silicon layer or the metal layer in the multilayer insulating layer 2, which further ensures the normal identification of the mark 5 during the process of removing the back film precision.
  • the bending area R211 extends along the boundary direction of the display area R1 (for example, the direction of BB′ in FIG. 2 ), there are multiple marks 5 , and the multiple marks 5 are along the bending area
  • the extending directions of the R211 are arranged at intervals, so as to ensure the uniformity of the width of the bending region R211 in the boundary direction of the display region R1 , and further ensure the precision of removing the back film of the display panel 100 .
  • the six marks 5 include three first marks 51 and three second marks 52, and the three first marks 51 are arranged at intervals along the extending direction of the bending region R211 , the three second marks 52 are arranged at intervals along the extension direction of the bending region R211, one of the first marks 51 and one of the second marks 52 are located approximately in the middle of the bending region R211 in the extending direction thereof, and the remaining two The first mark 51 and the remaining two second marks 52 are respectively disposed adjacent to both ends of the bending region R211 in the extending direction.
  • the number of marks 5 can also be two, three, four or more than four.
  • the shapes of the multiple markers 5 may be the same or different; when the shapes of the multiple markers 5 are the same, the placement angles of the multiple markers 5 may be the same or different.
  • the shapes of the plurality of markers 5 are the same for easy identification, and the placement angles of the plurality of markers 5 are not exactly the same.
  • the mark 5 is formed as a pattern mark, for example, the mark 5 may be formed in an L shape, a cross shape, a polygon, a circle, an ellipse, or the like.
  • the shape of the mark 5 is not limited to this, for example, the mark 5 may also be formed as a digital mark.
  • the mark 5 is formed in an L shape
  • the mark 5 may include a first side and a second side, the first side and the second side may be vertically connected, and the edge of the bending region R211 may be connected with the first side or the second side is parallel.
  • the display device includes the display panel 100 according to the embodiment of the first aspect of the present application.
  • the display device of the embodiment of the present application by using the above-mentioned display panel 100 , it is convenient to better meet the requirement of further reduction of the frame.
  • the specific type of the display device according to the embodiment of the present application is not limited. products or components.
  • other structures and operations of the display device according to the embodiments of the present application are known to those of ordinary skill in the art after the specific type of the display device is determined, and will not be described in detail here.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction between the two elements. .
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction between the two elements.
  • a first feature "on” or “under” a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary get in touch with.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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Abstract

一种显示面板(100)和显示装置，显示面板(100)包括显示区(R1)和非显示区(R2)，非显示区(R2)包括弯折控制区(R21)，弯折控制区(R21)包括弯折区(R211)和控制区(R212)，显示面板(100)包括基底(1)、多层绝缘层(2)和背膜结构(3)，多层绝缘层(2)上具有凹陷部(21)，位于显示区(R1)的背膜结构(3)的厚度小于位于控制区(R212)的背膜结构(3)的厚度，且大于位于弯折区(R211)的背膜结构(3)的厚度，显示面板(100)上具有标记(5)，标记(5)位于非显示区(R2)，且间隔设在凹陷部(21)的周围，标记(5)适于作为弯折区(R211)的校正基准。

Description

显示面板和显示装置
相关申请的交叉引用
本申请基于申请号为202010680366.3、申请日为2020年07月15日的中国专利申请提出，并要求上述中国专利申请的优先权，上述中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及显示技术领域，尤其是涉及一种显示面板和显示装置。
背景技术
相关技术中，在显示面板的弯折工艺前，会对显示面板去背膜；然而，为了缩减显示面板的边框宽度，易导致去背膜的热影响区与去背膜的精度基准干涉，而热影响区的背膜结构的厚度不均一，会造成去背膜精度校正异常，影响去背膜精度，从影响产品品质，影响显示面板弯折的良品率。
发明内容
本申请旨在至少解决相关技术中存在的技术问题之一。为此，本申请在于提出一种显示面板，所述显示面板便于实现去背膜精度的正常校正，保证去背膜精度，有效提升了产品良品率。
本申请还提出一种具有上述显示面板的显示装置。
根据本申请第一方面的显示面板，所述显示面板包括显示区和围绕所述显示区的非显示区，所述非显示区包括弯折控制区，所述弯折控制区与所述显示区间隔设置且包括弯折区和控制区，所述控制区包括第一控制区和第二控制区，所述第一控制区位于所述显示区和所述弯折区之间，所述第二控制区位于所述弯折区远离所述显示区的一侧所述显示面板包括：基底；多层绝缘层，所述多层绝缘层设在所述基底的一侧，所述多层绝缘层上具有凹陷部，所述凹陷部位于所述非显示区，且所述凹陷部在所述基底的正投影的至少部分位于所述弯折区，所述凹陷部内设有填充件；背膜结构，所述背膜结构设在所述基底的背向所述多层绝缘层的一侧，位于所述显示区的所述背膜结构的厚度小于位于所述控制区的所述背膜结构的厚度，且大于位于所述弯折区的所述背膜结构的厚度，其中，所述显示面板上具有标记，所述标记位于非显示区，且间隔设在所述凹陷部的周 围，所述标记适于作为所述弯折区的校正基准。
根据本申请的显示面板，通过在显示面板上设置标记，使得标记位于非显示区，且间隔设在凹陷部的周围，使得标记可以作为弯折区的校正基准，从而有效保证标记在去背膜精度校正过程中能被正常识别，保证了显示面板的去背膜精度，提高了显示面板的弯折精度，保证了良品率，使得显示面板可以更好地适应边框进一步缩减的需求。
在一些实施例中，所述弯折区和所述第一控制区之间形成第一边界，所述弯折区和所述第二控制区之间形成第二边界，所述标记为多个且包括：第一标记，所述第一标记间隔设在所述凹陷部的靠近所述显示区的一侧，所述第一标记适于作为所述第一边界的校正基准；第二标记，所述第二标记间隔设在所述凹陷部的远离所述显示区的一侧，所述第二标记适于作为所述第二边界的校正基准。
在一些实施例中，所述标记适于作为所述凹陷部的校正基准。
在一些实施例中，所述凹陷部具有相对设置的第三边界和第四边界，所述标记为多个且包括：第一标记，所述第一标记间隔设在所述凹陷部的靠近所述显示区的一侧，所述第一标记适于作为所述第三边界的校正基准；第二标记，所述第二标记间隔设在所述凹陷部的远离所述显示区的一侧，所述第二标记适于作为所述第四边界的校正基准。
在一些实施例中，所述显示面板还包括位于所述凹陷部远离所述基底一侧的信号线层，在所述弯折区内，所述信号线层设在所述基底与所述填充件之间，所述凹陷部在所述基底的正投影位于所述信号线层在所述基底的正投影内，且所述信号线层与所述显示区的数据线电连接。
在一些实施例中，所述凹陷部包括沿垂直于所述基底方向依次叠置的多个凹槽，所述填充件填充于多个所述凹槽内。
在一些实施例中，所述标记间隔设在所述信号线层的周围，所述标记在所述基底的正投影与所述信号线层在所述基底的正投影不重叠；或者，所述标记位于所述信号线层的靠近基底的一侧，所述标记在所述基底的正投影位于所述信号线层在所述基底的正投影范围内，且标记在所述基底的正投影的边界和所述信号线层在所述基底的正投影的边界间隔设置；或者，所述信号线层包括多条间隔设置的连接线，所述标记设在所述信号线层的靠近基底的一侧，且标记在所述基底的正投影位于相邻两条所述连接线在所述基底的正投影之间。
在一些实施例中，所述弯折区沿所述显示区的边界方向延伸，所述标记为多个，多个所述标记沿所述弯折区的延伸方向间隔布置。
在一些实施例中，所述标记位于所述多层绝缘层中。
在一些实施例中，所述标记形成为L形、十字形、多边形、圆形、或椭圆形。
根据本申请第二方面的显示装置，包括根据本申请上述第一方面的显示面板。
根据本申请的显示装置，通过采用上述的显示面板，便于更好地适应边框进一步缩减的需求。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
图1是根据本申请一个实施例的显示面板的剖视图；
图2是图1中所示的显示面板的另一个示意图；
图3是根据本申请另一个实施例的显示面板的剖视图；
图4是图3中所示的显示面板的另一个示意图；
图5是根据本申请再一个实施例的显示面板的示意图。
附图标记：
显示面板100、
显示区R1、非显示区R2、弯折控制区R21、
弯折区R211、第一边沿S1、第二边沿S2、
控制区R212、第一控制区R212a、第二控制区R212b、
基底1、
绝缘层2、凹陷部21、第三边界S3、第四边界S4、台阶结构210、
凹槽211、第一凹槽211a、第二凹槽211b、第二凹槽的边界S5、
背膜结构3、填充件4、
标记5、第一标记51、第二标记52、
信号线层6、连接线61、数据线8。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
下文的公开提供了许多不同的实施例或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并 且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或字母。这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施例和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的可应用于性和/或其他材料的使用。
下面，参考附图描述根据本申请第一方面实施例的显示面板100。其中，显示面板100可以为柔性显示面板，但不限于此。
如图1和图3所示，显示面板100包括显示区R1和围绕显示区R1的非显示区R2，非显示区R2位于显示区R1的周边，且非显示区R2包括弯折控制区R21，弯折控制区R21与显示区R1间隔设置，且弯折控制区R21包括弯折区R211和控制区R212，控制区R212包括第一控制区R212a和第二控制区R212b，第一控制区R212a位于显示区R1和弯折区R211之间，则第一控制区R212a位于弯折区R211的靠近显示区R1的一侧，第二控制区R212b位于弯折区R211的远离显示区R1的一侧。
显示面板100可以具有成型状态，在成型状态下，弯折区R211弯折形成为弯折部，使得非显示区R2的一部分位于显示区R1的下方，即非显示区R2的一部分位于显示区R1的背侧，从而可以减小显示面板100的边框宽度，便于实现窄边框设计。其中，弯折部对应的半径为R，则弯折区R211在弯折方向上的长度L大致为πR。
如图1和图3所示，显示面板100包括基底1和多层绝缘层2，多层绝缘层2设在基底1的一侧，绝缘层2上具有凹陷部21，凹陷部21位于非显示区R2，且凹陷部21在基底1的正投影的至少部分位于弯折区R211，凹陷部21内设有填充件4。例如，在图1和图3的示例中，多层绝缘层2设在基底1的厚度方向(例如，图1中的CC’方向)的一侧，多层绝缘层2沿基底1的厚度方向层叠设置，凹陷部21的至少部分与弯折区R211沿基底1的厚度方向相对设置。
显示面板100还包括背膜结构3，背膜结构3设在基底1的背向多层绝缘层2的一侧，位于显示区R1的背膜结构3的厚度小于位于控制区R212的背膜结构3的厚度，且位于显示区R1的背膜结构3的厚度大于位于弯折区R211的背膜结构3的厚度。
由此，相对而言，位于弯折区R211的背膜结构3的厚度较小，而凹陷部21在基底1的正投影的至少部分位于弯折区R211，则凹陷部21沿基底1厚度方向的正投影的至少部分位于弯折区R211，使得弯折区R211内保留较薄的背膜结构3和绝缘层2，并在凹陷部21内设置填充件4，便于控制弯折区R211内的线路层例如信号线层6位于“中性层”，即便于使得弯折区R211内的线路层位于显示面板100厚度方向上的中间位置，则弯折区R211在弯折过程中，保证线路层受到的应力最小，避免线路层弯折后出现损 伤(例如产生裂纹、或断开等)，有效保证了线路层的可靠性。
在显示面板100的加工过程中，需要对弯折区R211进行去背膜，即去除位于弯折区R211的背膜结构3的一部分，以减小位于弯折区R211的背膜结构3的厚度。例如，背膜结构3在去背膜之前可以为等厚结构；在去背膜过程中，例如采用激光去背膜，会在弯折区R211的两侧形成热影响区，热影响区的背膜结构3的厚度大于去背膜前背膜结构3的厚度，热影响区对应形成控制区R212。
如图1-图5所示，显示面板100上具有标记5，标记5位于非显示区R2，且标记5间隔设在凹陷部21的周围，标记5与凹陷部21的边界(例如，后文所述的第三边界S3、第四边界S4)间隔设置，且标记5设在凹陷部21的至少一侧，则包括以下情况：1、标记5间隔设在凹陷部21的靠近显示区R1的一侧；2、标记5间隔设在凹陷部21的远离显示区R1的一侧；3、凹陷部21的靠近显示区R1的一侧和凹陷部21的远离显示区R1的一侧分别设有标记5。
其中，标记5适于作为弯折区R211的校正基准，则标记5适于作为弯折区R211的边界的精度基准，或者说，标记5适于作为去背膜的精度基准，可以有效保证在去背膜精度校正过程中，标记5能被正常识别，从而保证显示面板100去背膜精度的正常校正，进而提高显示面板100的Bending精度(弯折精度)，提升产品品质，保证显示面板100的良品率，同时便于保证显示面板100更好地适应边框进一步缩减的需求。
此外，标记5间隔设在凹陷部21的周围，使得标记5具有足够的设置空间，以便于标记5的设置，同时便于使得标记5具有合适的大小，以保证去背膜精度校正过程中的正常识别。
由此，相对于一些技术中，将凹陷部21的边界作为弯折区R211的校正基准，也就是说，对弯折区R211的边界与凹陷部21的边界之间的距离进行监控，在适应显示面板100边框进一步缩减的需求时，由于边框的进一步缩减，使得凹陷部21的宽度随之缩减，导致热影响区与凹陷部21的边界易发生干涉，而由于热影响区的背膜结构3的厚度不均一，使得在去背膜精度校正过程中、凹陷部21的边界识别异常，无法保证去背膜精度，从而影响显示面板100弯折良品率；本申请中，通过在显示面板100上设置标记5，使得标记5间隔设在凹陷部21的周围，以有效保证标记5在去背膜精度校正过程中能被正常识别，从而保证了显示面板100的去背膜精度，提高了显示面板100的弯折精度，保证了良品率，使得显示面板100可以更好地适应边框进一步缩减的需求。
例如，在图1和图3的示例中，凹陷部21对应的区域大于弯折区R211，则凹陷部21的边界位于弯折区R211对应边界的外侧，以保证弯折区R211内的线路层例如位于 “中性层”。进一步地，凹陷部21对应的区域可以大于、或等于、或小于弯折控制区R21。
在一些实施例中，填充件4为MCL胶，即填充件4材料为UV胶。其中，填充件4的厚度可以根据实际应用具体设置。
在一些实施例中，如图1和图3所示，弯折区R211和第一控制区R212a之间形成第一边界S1，弯折区R211和第二控制区R212b之间形成第二边界S2，即第一边界S1为弯折区R211与第一控制区R212a之间的界线，第二边界S2为弯折区R211与第二控制区R212b之间的界线。标记5为多个，且多个标记5包括第一标记51和第二标记52，第一标记51间隔设在凹陷部21的靠近显示区R1的一侧，且第一标记51适于作为第一边界S1的校正基准，第二标记52间隔设在凹陷部21的远离显示区R1的一侧，且第二标记52适于作为第二边界S2的校正基准。由此，相比于第二标记52，第一标记51与第一边界S1之间的距离较短，在去背膜精度校正过程中、便于使得第一标记51和第一边界S1同时位于校正视野范围内，从而保证校正精度；同时，相比于第一标记51，第二标记52与第二边界S2之间的距离较短，在去背膜精度校正过程中、便于使得第二标记52和第二边界S2同时位于校正视野范围内，从而保证校正精度。
当然，本申请不限于此。在另一些实施例中，标记5还可以包括第一标记51或第二标记52；例如，标记5包括第一标记51、且不包括第二标记52时，第一标记51间隔设在凹陷部21的靠近显示区R1的一侧，此时第一标记51适于作为第一边沿S1和第二边沿S2的校正基准；又例如，标记5包括第二标记52、且不包括第一标记51时，第二标记52间隔设在凹陷部21的远离显示区R1的一侧，此时第二标记52适于作为第一边沿S1和第二边沿S2的校正基准。由此，标记5设置灵活，便于实现显示面板100的多样化设计，以更好地适应实际应用。
在一些实施例中，如图1所示，标记5适于作为凹陷部21的校正基准，则标记5适于作为凹陷部21的边界的精度基准，以保证凹陷部21的位置精度；此时标记5适于作为弯折区R211和凹陷部21的校正基准，有利于保证凹陷部21与弯折区R211的相对位置精度，提升产品品质。
其中，弯折区R211和凹陷部21可以选同一标记5作为校正基准，也可以选不同标记5作为校正基准。
在一些实施例中，如图1和图3所示，凹陷部21具有相对设置的第三边界S3和第四边界S4，弯标记5为多个，且多个标记5包括第一标记51和第二标记52，第一标记51间隔设在凹陷部21的靠近显示区R1的一侧，且第一标记51适于作为第三边界S3 的校正基准，第二标记52间隔设在凹陷部21的远离显示区R1的一侧，且第二标记52适于作为第四边界S4的校正基准。由此，相比于第二标记52，第一标记51与第三边界S3之间的距离较短，在精度校正过程中、便于使得第一标记51和第三边界S3同时位于校正视野范围内，从而保证校正精度；同时，相比于第一标记51，第二标记52与第四边界S4之间的距离较短，在精度校正过程中、便于使得第二标记52和第四边界S4同时位于校正视野范围内，从而保证校正精度。
例如，当标记5与凹陷部21的边界之间的距离可以大致为150μm左右，例如当标记5包括第一标记51时，第一标记51与凹陷部21的靠近显示区R1的一侧的边界之间的距离大致为150μm左右，当标记5包括第二标记52时，第二标记52与凹陷部21的远离显示区R1的一侧的边界之间的距离大致为150μm左右；当然，标记5与凹陷部21边界之间的间隔还可以根据实际应用设置为其他数值。
在一些实施例中，如图1和图3所示，显示面板100还包括位于凹陷部21的远离基底1一侧的信号线层6，信号线层6与显示区R1的数据线8电连接，在弯折区R211内，信号线层6设在基底1与填充件4之间，例如，在弯折区R211内，凹陷部21贯穿多层绝缘层2；凹陷部21在基底1的正投影位于信号线层6在基底1的正投影内，则信号线层6对应的区域大于凹陷部21对应的区域，以便于实现信号线层6与数据线8的电连接。
可以理解的是，在本申请中，标记5间隔设在凹陷部21的周围，则在此基础上，标记5可以设在信号线层6的周围，和/或，标记5在基底1的正投影位于信号线层6在基底1的正投影内，则包括以下情况：1、标记5间隔设在信号线层6的周围(如图3和图4所示)；2、标记5间隔设在凹陷部21的周围，且标记5在基底1的正投影位于信号线层6在基底1的正投影内(如图1和图2所示)；3、信号线层6在基底1正投影的内、外均设有标记5。
例如，标记5包括第一标记51，第一标记51间隔设在凹陷部21的靠近显示区R1的一侧，则第一标记51可以间隔设在信号线层6的靠近显示区R1的一侧(如图3和图4所示)；或者第一标记51间隔设在凹陷部21的周围，且第一标记51在基底1的正投影位于信号线层6在基底1的正投影内(如图1和图2所示)。又例如，标记5包括第二标记52，第二标记52间隔设在凹陷部21的远离显示区R1的一侧，则第二标记52可以间隔设在信号线层6的远离显示区R1的一侧(如图3和图4所示)；或者第二标记52间隔设在凹陷部21的周围，且第二标记52在基底1的正投影位于信号线层6在基底1的正投影内(如图1和图2所示)。由此，丰富了标记5的位置设置，可以根据 实际工艺等选取合适的位置。
在一些实施例中，如图1和图3所示，凹陷部21包括沿垂直于基底1方向依次叠置的多个凹槽211，相邻两个凹槽211中靠近基底1的一个凹槽211可以由另一个凹槽211的底壁的一部分凹入形成，则凹陷部21在弯折方向上的两个侧壁上分别形成有至少一个台阶结构210，填充件4填充于多个凹槽211内，便于保证弯折区R211内信号线层6位于“中性层”，同时，通过设置多个凹槽211，在一定程度上可以延长信号线层6的长度，每个凹槽211对应的绝缘层2的厚度较小，使得信号线层6更好地适应显示面板100的弯折工艺。在本申请的描述中，“多个”的含义是两个或两个以上。
例如，在图1和图3的示例中，台阶结构210为一个，凹陷部21包括第一凹槽211a和第二凹槽211b，第二凹槽211b位于第一凹槽211a的邻近基底1的一侧，第一凹槽211a的边界分别对应于第三边界S3和第四边界S4；标记5间隔位于第三边界3的靠近显示区R1的一侧和/或间隔位于第四边界S4的远离显示区R1的一侧。由此，相对于一些技术中，将第二凹槽的边界S5作为弯折区R211的校正基准，在适应显示面板100边框进一步缩减的需求时，由于边框的进一步缩减，使得凹陷部21的宽度随之缩减，导致热影响区与第二凹槽的边界S5易发生干涉，而由于热影响区的背膜结构3的厚度不均一，使得在去背膜精度校正过程中、第二凹槽的边界S5识别异常，无法保证去背膜精度，从而影响显示面板100弯折良品率；本申请中，通过在显示面板100上设置标记5，有效保证标记5在去背膜精度校正过程中能被正常识别，从而保证了显示面板100的去背膜精度。
在图1的示例中，凹陷部21可以沿显示面板100的厚度方向贯穿绝缘层2。例如，在图1的示例中，凹陷部21包括第一凹槽211a和第二凹槽211b，第二凹槽211b位于第一凹槽211a的邻近基底1的一侧，且第二凹槽211b贯穿多层绝缘层2。其中，多层绝缘层2可以包括多层无机衬底。
在一些实施例中，如图3和图4所示，标记5间隔设在信号线层6的周围，标记5在基底1的正投影与信号线层6在基底1的正投影不重叠，则标记5在基底1的正投影与信号线层6在基底1的正投影完全隔开设置。在另一些实施例中，如图1和图2所示，标记5位于信号线层6的靠近基底1的一侧，标记5在基底1的正投影位于信号线层6在基底1的正投影范围内，且标记5在基底1的正投影的边界和信号线层6在基底1的正投影的边界间隔设置，以便保证标记5的有效识别。再一些实施例中，如图5所示，信号线层6包括多条间隔设置的连接线61，标记5设在信号线层6的靠近基底1的一侧，且标记5在基底1的正投影位于相邻两条连接线61在基底1的正投影之间，以便 保证标记5的有效识别；其中，连接线61的布置方式可以根据实际应用具体设置。由此，标记5位置设置灵活，便于实现显示面板100的多样化设计。
在一些实施例中，如图1和图3所示，标记5位于多层绝缘层2中，例如标记5可以设在多层绝缘层2中任意相邻两层绝缘层2之间，以便于保证标记5可以被有效识别。例如，标记5可以通过蚀刻的方式形成，但不限于此。
在一些实施例中，标记5可以设在多层绝缘层2中的硅层或金属层上，进一步保证了标记5在去背膜精度校正过程中的正常识别。
在一些实施例中，如图2所示，弯折区R211沿显示区R1的边界方向(例如，图2中的BB’方向)延伸，标记5为多个，多个标记5沿弯折区R211的延伸方向间隔布置，以便于保证弯折区R211的宽度在显示区R1的边界方向上的均一性，进一步保证了显示面板100的去背膜精度。
例如，在图2的示例中，标记为5六个，六个标记5包括三个第一标记51和三个第二标记52，三个第一标记51沿弯折区R211的延伸方向间隔设置，三个第二标记52沿弯折区R211的延伸方向间隔设置，其中一个第一标记51和其中一个第二标记52均大致位于弯折区R211在其延伸方向上的中部位置，其余两个第一标记51和其余两个第二标记52分别邻近弯折区R211在延伸方向上的两端设置。当然，标记5还可以为两个、三个、四个或四个以上。
可以理解的是，多个标记5的形状可以相同或不同；当多个标记5的形状相同时，多个标记5的放置角度可以相同或不同。例如，在图2的示例中，多个标记5形状相同，以便于识别，多个标记5的放置角度不完全相同。
在一些实施例中，如图2所示，标记5形成为图案标记，例如标记5可以形成为L形、十字形、多边形、圆形、或椭圆形等。当然，标记5的形状不限于此，例如标记5还可以形成为数字标记。
例如，在图2的示例中，标记5形成为L形，标记5可以包括第一边和第二边，第一边和第二边可以垂直连接，弯折区R211的边沿可以与第一边或第二边平行。
根据本申请第二方面实施例的显示装置，包括根据本申请上述第一方面实施例的显示面板100。
根据本申请实施例的显示装置，通过采用上述的显示面板100，便于更好地适应边框进一步缩减的需求。
此外，需要说明的是，根据本申请实施例的显示装置的具体类型不限，例如可以是手机、显示器、平板电脑、电视机、笔记本电脑、数码相框、导航仪、穿戴设备等任何 具有显示功能的产品或者部件。另外，根据本申请实施例的显示装置的其他构成以及操作，在显示装置的具体类型确定后，对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本申请的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“厚度”、“上”、“下”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接，还可以是通信；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型， 本申请的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种显示面板，其中，所述显示面板包括显示区和围绕所述显示区的非显示区，所述非显示区包括弯折控制区，所述弯折控制区与所述显示区间隔设置且包括弯折区和控制区，所述控制区包括第一控制区和第二控制区，所述第一控制区位于所述显示区和所述弯折区之间，所述第二控制区位于所述弯折区远离所述显示区的一侧；
    所述显示面板包括：
    基底；
    多层绝缘层，所述多层绝缘层设在所述基底的一侧，所述多层绝缘层上具有凹陷部，所述凹陷部位于所述非显示区，且所述凹陷部在所述基底的正投影的至少部分位于所述弯折区，所述凹陷部内设有填充件；
    背膜结构，所述背膜结构设在所述基底的背向所述多层绝缘层的一侧，位于所述显示区的所述背膜结构的厚度小于位于所述控制区的所述背膜结构的厚度，且大于位于所述弯折区的所述背膜结构的厚度，
    其中，所述显示面板上具有标记，所述标记位于所述非显示区，且间隔设在所述凹陷部的周围，所述标记适于作为所述弯折区的校正基准。
  2. 根据权利要求1所述的显示面板，其中，所述弯折区和所述第一控制区之间形成第一边界，所述弯折区和所述第二控制区之间形成第二边界，所述标记为多个且包括：
    第一标记，所述第一标记间隔设在所述凹陷部的靠近所述显示区的一侧，所述第一标记适于作为所述第一边界的校正基准；
    第二标记，所述第二标记间隔设在所述凹陷部的远离所述显示区的一侧，所述第二标记适于作为所述第二边界的校正基准。
  3. 根据权利要求1或2所述的显示面板，其中，所述标记适于作为所述凹陷部的校正基准。
  4. 根据权利要求3所述的显示面板，其中，所述凹陷部具有相对设置的第三边界和第四边界，所述标记为多个且包括：
    第一标记，所述第一标记间隔设在所述凹陷部的靠近所述显示区的一侧，所述第一标记适于作为所述第三边界的校正基准；
    第二标记，所述第二标记间隔设在所述凹陷部的远离所述显示区的一侧，所述第二标记适于作为所述第四边界的校正基准。
  5. 根据权利要求1-4中任一项所述的显示面板，其中，还包括位于所述凹陷部远离所 述基底一侧的信号线层，
    在所述弯折区内，所述信号线层设在所述基底与所述填充件之间，所述凹陷部在所述基底的正投影位于所述信号线层在所述基底的正投影内，且所述信号线层与所述显示区的数据线电连接。
  6. 根据权利要求5所述的显示面板，其中，所述凹陷部包括沿垂直于所述基底方向依次叠置的多个凹槽，所述填充件填充于多个所述凹槽内。
  7. 根据权利要求5或6所述的显示面板，其中，
    所述标记间隔设在所述信号线层的周围，所述标记在所述基底的正投影与所述信号线层在所述基底的正投影不重叠；或者，
    所述标记位于所述信号线层的靠近基底的一侧，所述标记在所述基底的正投影位于所述信号线层在所述基底的正投影范围内，且标记在所述基底的正投影的边界和所述信号线层在所述基底的正投影的边界间隔设置；或者，
    所述信号线层包括多条间隔设置的连接线，所述标记设在所述信号线层的靠近基底的一侧，且标记在所述基底的正投影位于相邻两条所述连接线在所述基底的正投影之间。
  8. 根据权利要求1-7中任一项所述的显示面板，其中，所述弯折区沿所述显示区的边界方向延伸，所述标记为多个，多个所述标记沿所述弯折区的延伸方向间隔布置。
  9. 根据权利要求1-8中任一项所述的显示面板，其中，所述标记位于所述多层绝缘层中。
  10. 根据权利要求1-9中任一项所述的显示面板，其中，所述标记形成为L形、十字形、多边形、圆形、或椭圆形。
  11. 一种显示装置，其中，包括根据权利要求1-10中任一项所述的显示面板。
PCT/CN2021/098968 2020-07-15 2021-06-08 显示面板和显示装置 Ceased WO2022012228A1 (zh)

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