WO2022056785A1 - 一种显示面板及其制备方法和显示装置 - Google Patents

一种显示面板及其制备方法和显示装置 Download PDF

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Publication number
WO2022056785A1
WO2022056785A1 PCT/CN2020/115967 CN2020115967W WO2022056785A1 WO 2022056785 A1 WO2022056785 A1 WO 2022056785A1 CN 2020115967 W CN2020115967 W CN 2020115967W WO 2022056785 A1 WO2022056785 A1 WO 2022056785A1
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WIPO (PCT)
Prior art keywords
area
display
display substrate
layer
display panel
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PCT/CN2020/115967
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English (en)
French (fr)
Inventor
于鹏飞
白露
代洁
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202080002015.5A priority Critical patent/CN114730850B/zh
Priority to US17/419,864 priority patent/US11864418B2/en
Priority to PCT/CN2020/115967 priority patent/WO2022056785A1/zh
Publication of WO2022056785A1 publication Critical patent/WO2022056785A1/zh

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    • 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
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/544—Marks applied to semiconductor devices or parts, e.g. registration marks, alignment structures, wafer maps
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • 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
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
    • H01L2223/544—Marks applied to semiconductor devices or parts
    • H01L2223/54426—Marks applied to semiconductor devices or parts for alignment
    • 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
    • H10K59/40—OLEDs integrated with touch screens

Definitions

  • the embodiments of the present disclosure belong to the field of display technology, and specifically relate to a display panel, a method for manufacturing the same, and a display device.
  • the flexible display panel which uses OLED (Organic Light-Emitting Diode, organic electroluminescent device) as the light-emitting device and is signal-controlled by thin film transistors, has become the mainstream direction of the OLED industry.
  • OLED Organic Light-Emitting Diode, organic electroluminescent device
  • the device automatically recognizes the specific graphics pre-deposited around the display panel or inside the display panel through the camera (hereinafter referred to as "" Mark”) to lock the position of the panel, thus ensuring the accuracy of the process.
  • Embodiments of the present disclosure provide a display panel, a method for manufacturing the same, and a display device.
  • an embodiment of the present disclosure provides a display panel, comprising: a display substrate, the display substrate includes a display area, and a frame area surrounding the display area, the frame area includes a first area and a second area area, the first area is arranged around the periphery of the display area, and the second area is arranged around the periphery of the first area;
  • the display substrate further includes a plurality of electrical functional layers, the plurality of electrical functional layers are respectively located in different layers, and at least some of the film layers of the plurality of electrical functional layers are partially overlapped; the electrical functional layers are at least partially distributed on the
  • the display area is at least partially distributed in the first area and the second area, and the light transmittance of the first area is higher than the light transmittance of the second area and the display area.
  • the width of the first region along a direction away from the display region ranges from 10 to 350 ⁇ m.
  • the display substrate includes a transistor and an organic light emitting diode electrically connected to the transistor;
  • the electrical functional layer includes a semiconductor layer, a gate layer, a source-drain metal layer, and an anode layer;
  • the semiconductor layer includes an active layer of the transistor; the gate layer includes a gate line, a gate of the transistor; the source-drain metal layer includes the source and drain of the transistor, a data line, and a power supply wire; the anode layer includes the anode of the organic light emitting diode;
  • the distribution density of the electrical functional layer and the overlapping portion thereof in the display area is greater than that in the first area and smaller than that in the second area.
  • a touch layer is further included, the touch layer is disposed on the light-emitting side of the display substrate; the touch layer includes a touch area and a wiring area surrounding the touch area;
  • the display area falls within the orthographic projection range of the touch control area on the display substrate; in the plane where the display substrate is located, along the direction away from the display area, the wiring area is on the display substrate
  • the orthographic projection on the first area is located on the side of the first area away from the display area, and there is a first distance between the wiring area and the first area; in the first area at least a pair of oppositely distributed
  • the position area is used as an alignment mark when the touch layer is disposed on the display substrate.
  • the first distance is greater than 0 and less than a width of the second region in a direction away from the display region.
  • a cover plate is further included, the cover plate is disposed on a side of the touch layer away from the display substrate;
  • the cover plate includes a center area and an ink area surrounding the center area;
  • the display area falls within the orthographic projection range of the central area on the display substrate, and in the plane where the display substrate is located, along the direction away from the display area, the ink area is located in the first area
  • the side far from the display area, and the ink area and the first area are separated by a second distance; at least a pair of relatively distributed position areas in the first area are used as the cover plate.
  • the alignment mark on the display substrate is used as the cover plate.
  • the second distance is greater than 0 and less than a width of the second region in a direction away from the display region.
  • the second distance is greater than the first distance.
  • the width L of the alignment mark along the direction away from the display area satisfies L ⁇ (B- ⁇ b)/k, 0 ⁇ k ⁇ 1; wherein, B is the first distance; ⁇ b is the setting tolerance of the touch layer; k is the minimum width change rate of the alignment mark identifiable by the alignment device.
  • the width L of the alignment mark along the direction away from the display area satisfies L ⁇ (C- ⁇ c)/k(1-k), 0 ⁇ k ⁇ 1 ; wherein, C is the second distance; ⁇ c is the setting tolerance of the cover plate; k is the minimum width change rate of the alignment mark that can be recognized by the alignment device.
  • the shape of the display area includes a rounded quadrilateral, and a pair of diagonal position areas in the first area corresponding to the rounded quadrilateral are used as the alignment marks.
  • the shape of the display area includes a rounded quadrilateral, and two pairs of diagonal position areas in the first area corresponding to the rounded quadrilateral are used as the alignment marks.
  • At least one set of opposite sides of the first area corresponding to the rounded quadrilateral is respectively provided with a position area, and the position area is used as the alignment mark.
  • the entirety of the first region serves as the alignment mark.
  • the shape of the display area includes a polygon, and two corner position areas of the first area corresponding to the polygon are used as the alignment marks, and the two corner position areas of the polygon are opposite to each other.
  • the shape of the display area includes a polygon, and each corner position area corresponding to the polygon in the first area is used as the alignment mark.
  • each edge of the first area corresponding to the polygon has a location area serving as the alignment mark.
  • an embodiment of the present disclosure provides a display device including the above-mentioned display panel.
  • embodiments of the present disclosure provide a method for fabricating a display panel, including: fabricating a display substrate;
  • the display substrate includes a display area, a frame area surrounding the display area, the frame area including a first area and a second area, the first area surrounding the display area, and the first area.
  • the second area is arranged around the periphery of the first area;
  • the preparation of the display substrate includes preparing a plurality of electrical functional layers, the plurality of electrical functional layers are respectively located in different layers, and at least some of the film layers of the plurality of electrical functional layers are partially stacked
  • the electrical functional layer is at least partially distributed in the display area, and at least partially distributed in the first area and the second area, and the light transmittance of the first area is higher than that of the second area and the light transmittance of the display area.
  • the method further includes: preparing a touch layer on the light-emitting side of the display substrate;
  • the preparing the touch layer on the light-emitting side of the display substrate includes: aligning the touch layer and the display substrate; and at least a pair of relatively distributed position areas in the first area are used as the touch Alignment marks during the preparation of the control layer;
  • the positioning of the touch control layer and the display substrate includes:
  • the method further includes: preparing a cover plate on a side of the touch layer away from the display substrate; and preparing a cover plate on the side of the touch layer away from the display substrate includes: aligning the cover plate with the display substrate on which the touch layer is prepared; at least a pair of relatively distributed position areas in the first area are used as alignment marks during the preparation of the cover plate;
  • the positioning of the cover plate and the display substrate prepared with the touch layer includes:
  • the cover plate and the display substrate are aligned, so that the center area of the cover plate corresponds to the display area of the display substrate, and each position of the display substrate is used as the position of the alignment mark
  • the exposed widths of the regions relative to the ink regions of the cover plate are equal.
  • FIG. 1 is a top view of the structure of a display substrate in a display panel according to an embodiment of the disclosure
  • Fig. 2 is the enlarged structure top view of A area in Fig. 1;
  • FIG. 3 is a structural cross-sectional view of a display panel according to an embodiment of the disclosure.
  • FIG. 4 is a top view of the structure of a display substrate in another display panel according to an embodiment of the disclosure.
  • FIG. 5 is a structural top view of a display substrate in yet another display panel according to an embodiment of the disclosure.
  • FIG. 6 is a top view of the structure of a display substrate in yet another display panel according to an embodiment of the disclosure.
  • FIG. 7 is a top view of the structure of a display substrate in yet another display panel according to an embodiment of the disclosure.
  • FIG. 8 is a structural top view of a display substrate in a display panel according to another embodiment of the disclosure.
  • FIG. 9 is a structural top view of a display substrate in another display panel according to another embodiment of the disclosure.
  • FIG. 10 is a top view of the structure of a display substrate in yet another display panel according to another embodiment of the disclosure.
  • Display area 2. Frame area; 21. First area; 210, Position area; 22, Second area; 3. Touch layer; 31, Touch area; 32, Wiring area; 4. Cover plate; 41 , the central area; 42, the ink area; 5, the display substrate.
  • Embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of configurations formed based on manufacturing processes. Accordingly, the regions illustrated in the figures are of schematic nature and the shapes of the regions shown in the figures are illustrative of the specific shapes of the regions and are not intended to be limiting.
  • the OLED (Organic Light-Emitting Diode) display backplane reaches the cover glass lamination process through all the previous processes, the excess corners of the display backplane have been removed by laser cutting, and there is no extra space to place alignment marks (ie alignment marks). Mark); at this time, the positioning of the display backplane by the camera can only borrow some structures inside the display backplane that are easy to identify after imaging. For this reason, the display backplane also needs to be adjusted to meet the requirements of the camera for the recognition of graphics and the accuracy of alignment, and at the same time, the basic structure and display effect of the display panel are not affected.
  • OLED Organic Light-Emitting Diode
  • embodiments of the present disclosure provide a display panel and the same. Preparation method and display device.
  • An embodiment of the present disclosure provides a display panel, as shown in FIG. 1 and FIG. 2 , including: a display substrate 5
  • the display substrate 5 includes a display area 1 , a frame area 2 surrounding the display area 1 , and the frame area 2 includes a first Area 21 and second area 22, the first area 21 is arranged around the periphery of the display area 1, and the second area 22 is arranged around the periphery of the first area 21;
  • the display substrate also includes a plurality of electrical functional layers, and the plurality of electrical functional layers are located in the Different layers, at least some of the film layer patterns in the multiple electrical functional layers are partially overlapped; the electrical functional layers are at least partially distributed in the display area 1, and at least partially distributed in the first area 21 and the second area 22.
  • the light transmittance is higher than that of the second area 22 and the display area 1 .
  • the transmittance of the first area 21 is 10%-20%
  • the transmittance of the second area 22 is less than 1%
  • the transmittance of the display area 1 is 2%-8%.
  • the light transmittance of the first area 21 of the display substrate 5 By designing the light transmittance of the first area 21 of the display substrate 5 to be higher than the light transmittance of the second area 22 and the display area 1, the outside light transmittance of the first area 21 of the display substrate 5 is the highest, and the display The external light transmittance of the area 1 is second, and the external light transmittance of the second area 22 is the lowest; so that the external light passing through the first area 21 and the external light passing through the second area 22 and the display area 1 can form a strong Therefore, at least part of the first region 21 of the display substrate 5 can be used as an alignment mark when the subsequent film layers are arranged on the light-emitting side of the display substrate 5 .
  • the display panel is an OLED (Organic Light-Emitting Diode) display panel.
  • the subsequent film layer and the first area can be adjusted by adjusting the light transmittance.
  • the relative positional relationship between at least part of the first area 21 enables the camera and other equipment used for alignment to perform alignment by identifying the pattern of bright and dark areas of the field of view formed by at least part of the occlusion of the first area 21 by the subsequent film layer in the field of view, thereby Accurate alignment of subsequent film layers is achieved; since the first area 21 is formed in the inner frame area 2 of the display substrate 5, the setting of the first area 21 does not need to occupy other space of the display substrate 5, saving the frame area 2 of the display substrate space; at least part of the first area 21 is used as the alignment mark, which can meet the alignment accuracy requirements of the subsequent film layers that do not require very high alignment accuracy, and at least part of the first area 21 is used as the alignment mark. Affect the normal circuit structure and display effect of the display panel.
  • the subsequent film layer may be attached to the light-emitting side of the display substrate 5 by lamination, or may be formed on the light-emitting side of the display substrate 5 by direct fabrication; no matter whether it is attached or directly fabricated Subsequent film layers will need to use at least part of the first region 21 as an alignment mark for alignment.
  • the width L of the first region 21 along the direction away from the display region 1 ranges from 10 to 350 ⁇ m.
  • the setting of the width L of the first region 21 can, on the one hand, provide sufficient space for adjusting the alignment of the subsequent film layers and the display substrate, and on the other hand, can ensure the alignment accuracy of the subsequent film layers.
  • the width L of the first region 21 along the direction away from the display region 1 is 150 ⁇ m.
  • the width L value of the first region 21 is an optimum width value obtained through experiments that can ensure the alignment accuracy of the subsequent film layers.
  • the display substrate includes a transistor and an organic light-emitting diode electrically connected to the transistor;
  • the electrical functional layer includes a semiconductor layer, a gate layer, a source-drain metal layer, and an anode layer;
  • the semiconductor layer includes an active layer of the transistor;
  • Layers include gate lines and gates of transistors;
  • source-drain metal layers include source and drain electrodes of transistors, data lines, and power lines;
  • anode layers include anodes of organic light-emitting diodes; electrical functional layers and their overlapping parts are in the display area 1 Its distribution density is greater than its distribution density in the first region 21 and smaller than its distribution density in the second region 22 .
  • the transmittance of ambient light in the first area 21 of the display substrate the highest, the transmittance of ambient light in the display area 1 is second, and the transmittance of ambient light in the second area 22 is the lowest;
  • the light and the external light passing through the second area 22 and the display area 1 can form a strong difference in brightness, so that at least part of the first area 21 of the display substrate 5 can be used as an alignment mark when the subsequent film layers are disposed;
  • the first region 21 is formed naturally after the electrical functional layer is formed, and does not need to be prepared separately, thereby optimizing the structure and process of the display panel.
  • the electrical functional layer further includes other functional layers disposed on the same layer.
  • the electrical functional layer further includes an electrical transfer layer, and the electrical transfer layer is formed in the first area and the second area, such as display
  • the electrical transfer layer VSS in the region can be transferred to the source-drain metal layer and the like through the anode layer.
  • the display panel further includes a touch layer 3 , and the touch layer 3 is disposed on the light-emitting side of the display substrate 5 ; the touch layer 3 includes a touch area 31 and is surrounded by a touch area 31 .
  • the shape of the touch area 31 is the same as that of the display area 1; the display area 1 falls within the orthographic projection range of the touch area 31 on the display substrate 5; in the plane of the display substrate 5, along the In the direction away from the display area 1, the orthographic projection of the wiring area 32 on the display substrate 5 is located on the side of the first area 21 away from the display area 1, and there is a first distance B between the wiring area 32 and the first area 21; At least a pair of position regions 210 in one region 21 are arranged opposite to each other as alignment marks when the touch layer 3 is disposed on the display substrate 5 .
  • the setting of the first distance B facilitates the alignment adjustment when the touch layer 3 is disposed on the display substrate 5 .
  • the first distance B is greater than 0 and less than the width of the second region 22 in the direction away from the display region 1 . In this way, accurate alignment adjustment can be achieved when the touch layer 3 is disposed on the display substrate 5 .
  • the width L of the alignment mark along the direction away from the display area 1 satisfies L ⁇ (B- ⁇ b)/k, 0 ⁇ k ⁇ 1; wherein, B is the first distance ; ⁇ b is the setting tolerance of the touch layer 3; k is the minimum width change rate of the alignment mark that can be recognized by the alignment device.
  • the width L of the position area 210 used as the alignment mark along the direction away from the display area 1 satisfies the above requirements, so as to ensure that when the touch layer 3 is aligned with the display substrate 5 , the setting tolerance of the touch layer 3 will not affect the touch layer 3 Therefore, when the touch layer 3 is aligned with the display substrate 5 through the alignment mark, the alignment accuracy requirement can be met.
  • ⁇ b is 120 ⁇ m-180 ⁇ m
  • B is 180 ⁇ m-250 ⁇ m
  • L is 10-350 ⁇ m.
  • the display panel further includes a cover plate 4 , and the cover plate 4 is disposed on a side of the touch layer 3 away from the display substrate 5 ; the cover plate 4 includes a center area 41 and an ink area surrounding the center area 41 . 42.
  • the shape of the center area 41 is the same as that of the display area 1; the display area 1 falls within the orthographic projection range of the center area 41 on the display substrate 5, and in the plane where the display substrate 5 is located, along the direction away from the display area 1,
  • the ink area 42 is located on the side of the first area 21 away from the display area 1, and the ink area 42 and the first area 21 are separated by a second distance C; at least a pair of oppositely distributed position areas 210 in the first area 21 are used for An alignment mark when the cover plate 4 is installed on the display substrate 5 .
  • the setting of the second distance C facilitates the alignment adjustment when the cover plate 4 is arranged on the display substrate 5 .
  • the second distance C is greater than 0 and less than the width of the second region 22 in the direction away from the display region 1 . In this way, accurate alignment adjustment can be achieved when the touch layer 3 is disposed on the display substrate 5 .
  • the width L of the alignment mark along the direction away from the display area 1 satisfies L ⁇ (C- ⁇ c)/k(1-k), 0 ⁇ k ⁇ 1; where C is the second distance; ⁇ c is the setting tolerance of the cover plate 4; k is the minimum width change rate of the alignment mark that can be recognized by the alignment device.
  • the width L of the position area 210 used as the alignment mark along the direction away from the display area 1 satisfies the above requirements, so as to ensure the cover plate 4 and the display substrate 5 During the alignment, the setting tolerance of the cover plate 4 will not affect the setting accuracy of the cover plate 4, so that the cover plate 4 can meet the positioning accuracy requirements when the cover plate 4 is aligned with the display substrate through the alignment mark.
  • the second distance C is greater than the first distance B. In this way, it is possible to further realize the accurate alignment of the touch layer 3 provided before and the cover plate 4 provided later.
  • the shape of the display area 1 includes a rounded quadrilateral, and a pair of diagonal position areas 210 in the first area 21 corresponding to the rounded quadrilateral are used as alignment marks.
  • the position of the subsequent film layer is adjusted forward, backward, left and right until the peripheral region of the subsequent film layer corresponding to the diagonal position area 210 is at the same position relative to the diagonal position area 210 (as in the subsequent film layer)
  • the distance between the peripheral area of the film layer corresponding to the diagonal position area 210 and the diagonal position area 210 is the same, or the coverage width of the peripheral area corresponding to the diagonal position area 210 of the subsequent film layer to the diagonal position area 210 same, etc.), it is considered that the alignment is completed, and subsequent film layer settings (such as lamination) can be performed.
  • a pair of diagonal position areas 210 corresponding to the rounded quadrilateral in the first area 21 are used as alignment marks, which can uniquely determine the setting position of the subsequent film layer, so as long as the pair of diagonal corners corresponding to the rounded quadrilateral in the first area 21 If the position area 210 meets the alignment accuracy requirements, the alignment setting accuracy of the subsequent film layers can be ensured.
  • the quadrilateral is a rectangle, and the edge lines of the four corners of the rectangle are arcs, that is, the four corners of the rectangle are all set as arc-shaped leading corners, and the quadrilateral is a rounded quadrilateral.
  • the first area The edge lines of a pair of diagonal position areas 210 of the corresponding rounded quadrilaterals used as alignment marks in 21 are also arcs.
  • the rounded quadrilateral may also be any rounded quadrilateral with irregular shape, and the edge lines of the four corners of the quadrilateral may also be straight lines, that is, the four corners of the quadrilateral are not provided with chamfers, correspondingly , the edge lines of a pair of diagonal position regions of the corresponding quadrilateral used as alignment marks in the first region may also be straight lines.
  • the shape of the display area 1 includes a rounded quadrilateral, and two pairs of diagonal position areas 210 corresponding to the rounded quadrilateral in the first area 21 are used as alignment marks.
  • two pairs of diagonal position areas 210 corresponding to the rounded quadrilaterals in the first area 21 are used as alignment marks.
  • At least one set of opposite sides corresponding to the rounded quadrilateral in the first area 21 is respectively provided with a position area 210 , and the position area 210 is used as an alignment mark. That is, a rounded quadrilateral has a set of opposite sides, and each side is provided with a position area 210 . That is, in the case where the four corner position areas 210 corresponding to the rounded quadrilateral in the first area 21 are used as the alignment marks, two position areas corresponding to the rounded quadrilateral in the first area 21 respectively set on the opposite sides are added. 210 is used as an alignment mark, that is, a total of six location areas 210 are used as alignment marks. With this arrangement, compared with the aforementioned alignment mark setting scheme, in the case of uniquely determining the setting position of the subsequent film layer, the alignment setting accuracy of the subsequent film layer can be further ensured.
  • a plurality of position areas can be added as alignment marks, so that the subsequent film layers can be further ensured under the condition that the setting position of the subsequent film layers is uniquely determined.
  • the precision of the alignment setting can be added as alignment marks, so that the subsequent film layers can be further ensured under the condition that the setting position of the subsequent film layers is uniquely determined.
  • the entirety of the first region 21 is used as an alignment mark.
  • the first area 21 is continuously and closed around the periphery of the display area 1 .
  • the first area 21 can also be intermittently arranged around the periphery of the display area 1 , and the first area 21 is used as an alignment mark as a whole.
  • an embodiment of the present disclosure further provides a method for manufacturing the display panel, including: step S1 : preparing a display substrate.
  • the display substrate includes a display area, and a frame area surrounding the display area, the frame area includes a first area and a second area, the first area is arranged around the periphery of the display area, and the second area is arranged around the periphery of the first area; preparing the display The substrate includes preparing a plurality of electrical functional layers, the plurality of electrical functional layers are respectively located in different layers, and at least part of the film layers in the plurality of electrical functional layers are partially overlapped; the electrical functional layers are at least partially distributed in the display area, and at least partially distributed in the first The first area and the second area, the light transmittance of the first area is higher than the light transmittance of the second area and the display area.
  • the preparation method of the display panel further includes step S2: preparing a touch layer on the light emitting side of the display substrate.
  • preparing the touch layer on the light-emitting side of the display substrate includes: aligning the touch layer and the display substrate; and at least a pair of relatively distributed position areas in the first area are used as alignment during the preparation of the touch layer. bit tag.
  • the aligning of the touch layer and the display substrate specifically includes: aligning the touch layer and the display substrate, so that the touch area of the touch layer corresponds to the display area of the display substrate, and each of the display substrates is used for alignment
  • the exposed width of the marked location area relative to the wiring area of the touch layer is equal.
  • the preparation of the touch layer refers to attaching the touch layer on the light-emitting side of the display substrate.
  • attaching the touch layer it is necessary to align the touch layer and the display substrate, and then attach the touch layer to the display substrate. The substrate is attached.
  • the manufacturing method of the display panel further includes step S3: preparing a cover plate on the side of the touch layer away from the display substrate.
  • preparing the cover plate on the side of the touch layer away from the display substrate includes: aligning the cover plate with the display substrate prepared with the touch layer; Used as an alignment marker in cover plate preparation.
  • the positioning of the cover plate and the display substrate prepared with the touch layer specifically includes: aligning the cover plate and the display substrate, so that the central area of the cover plate corresponds to the display area of the display substrate, and each function of the display substrate is aligned.
  • the exposed width of the position area of the alignment mark is equal to that of the ink area of the cover plate.
  • the preparation of the cover plate refers to attaching the cover plate to the side of the touch layer away from the display substrate. When the cover plate is attached, it is necessary to align the cover plate with the display substrate, and then attach the cover plate to the display substrate. The display substrate is attached.
  • An embodiment of the present disclosure also provides a display panel, which is different from the above-mentioned embodiments in that, as shown in FIG. 8 , the shape of the display area 1 includes a polygon, and the two corner position areas 210 corresponding to the polygon in the first area 21 are used for pairing Bit mark, the two corner position areas 210 of the polygon are opposite. Among them, polygons such as regular hexagons.
  • the angular position area 210 corresponding to the two opposite positions of the polygon in the first area 21 is used as an alignment mark, which can uniquely determine the setting position of the subsequent film layer, so as long as the two opposite angles of the corresponding polygon in the first area 21 are If the position area 210 meets the alignment accuracy requirements, the alignment setting accuracy of the subsequent film layers can be ensured.
  • shape of the display area 1 may also be an irregular polygon.
  • the shape of the display area 1 includes a polygon.
  • the shape of the display area 1 is a regular hexagon, and each corner position area 210 corresponding to the polygon in the first area 21 is used as an alignment mark .
  • each angular position area 210 of the corresponding polygon in the first area 21 is used as alignment marks.
  • the shape of the display area 1 may be a regular polygon or an irregular polygon.
  • each side of the corresponding polygon in the first area 21 has a position area 210 serving as an alignment mark. That is, when each corner position area 210 of the corresponding polygon in the first area 21 is used as the alignment mark, it is added that each side of the corresponding polygon in the first area 21 has a position area 210 as the alignment mark, that is, for For a regular hexagon, there are a total of twelve location areas 210 as alignment marks.
  • the alignment setting accuracy of the subsequent film layer can be further ensured.
  • a plurality of position areas can be added as alignment marks in the periphery of the corresponding polygon in the first area, so as to further ensure the alignment of the subsequent film layers under the condition of uniquely determining the setting position of the subsequent film layers. Bits set the precision.
  • the subsequent film layers can be adjusted to The relative positional relationship between at least part of the first area 21 enables the camera and other equipment used for alignment to align the light and dark area pattern of the field of view formed by recognizing the occlusion of at least part of the first area by the subsequent film layer in the field of view , so as to realize the precise alignment of the subsequent film layers; since the first area is formed in the inner frame area of the display substrate, the setting of the first area does not need to occupy other space of the display substrate, saving the space of the frame area of the display substrate; using the first area At least part of the first area is used as an alignment mark, which can meet the setting accuracy requirements of the subsequent film layers that do not require very high alignment accuracy, and at least part of the first area is used as an alignment mark, which does not affect the normal circuit of the display panel. structure and display.
  • An embodiment of the present disclosure further provides a display device, including the display panel in any of the above-mentioned embodiments.
  • the display device optimizes the structure and process of the display device, and at the same time can ensure the normal circuit structure and display effect of the display device.
  • the display device may be any product or component with a display function, such as an OLED panel, an OLED TV, an LCD panel, an LCD TV, a display, a mobile phone, and a navigator.
  • a display function such as an OLED panel, an OLED TV, an LCD panel, an LCD TV, a display, a mobile phone, and a navigator.

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Abstract

一种显示面板，包括：显示基板（5），显示基板（5）包括显示区（1），围设在显示区（1）外围的边框区（2），边框区（2）包括第一区（21）和第二区（22），第一区（21）围设在显示区（1）外围，第二区（22）围设在第一区（21）外围；显示基板（5）还包括多个电学功能层，多个电学功能层分别位于不同层，多个电学功能层中至少有部分膜层局部叠置；电学功能层至少部分分布于显示区（1），且至少部分分布于第一区（21）和第二区（22），第一区（21）的光线透过率高于第二区（22）和显示区（1）的光线透过率。

Description

一种显示面板及其制备方法和显示装置 技术领域
本公开实施例属于显示技术领域，具体涉及一种显示面板及其制备方法和显示装置。
背景技术
以OLED(OrganicLight-Emitting Diode，有机电激发光器件)为发光器件、由薄膜晶体管进行信号控制的柔性显示面板(flexible display panel)已成为目前OLED行业的主流方向。在显示面板的生产制程中，曝光、切割、绑定、贴合等大量工艺过程都需要进行对位——设备通过相机自动识别预先沉积在显示面板周围或显示面板内部的特定图形(后称”Mark”)来锁定面板的位置，从而确保工艺的精确度。
发明内容
本公开实施例提供一种显示面板及其制备方法和显示装置。
第一方面，本公开实施例提供一种显示面板，包括：显示基板，所述显示基板包括显示区，围设在所述显示区外围的边框区，所述边框区包括第一区和第二区，所述第一区围设在所述显示区外围，所述第二区围设在所述第一区外围；
所述显示基板还包括多个电学功能层，所述多个电学功能层分别位于不同层，所述多个电学功能层中至少有部分膜层局部叠置；所述电学功能层至少部分分布于所述显示区，且至少部分分布于所述第一区和所述第二区，所述第一区的光线透过率高于所述第二区和所述显示区的光线透过率。
在一些实施例中，所述第一区沿远离所述显示区方向的宽度范围为10-350μm。
在一些实施例中，所述显示基板包括晶体管以及与所述晶体管电连接 的有机发光二极管；
所述电学功能层包括半导体层，栅极层，源漏金属层，阳极层；
所述半导体层包括所述晶体管的有源层；所述栅极层包括栅线、所述晶体管的栅极；所述源漏金属层包括所述晶体管的源极和漏极、数据线、电源线；所述阳极层包括所述有机发光二极管的阳极；
所述电学功能层以及其叠置部分在所述显示区的分布密度大于其在所述第一区的分布密度且小于其在所述第二区的分布密度。
在一些实施例中，还包括触控层，所述触控层设置于所述显示基板的出光侧；所述触控层包括触控区和围设在所述触控区外围的布线区；
所述显示区落入所述触控区在所述显示基板上的正投影范围内；在所述显示基板所在平面内，沿远离所述显示区的方向，所述布线区在所述显示基板上的正投影位于所述第一区的远离所述显示区的一侧，且所述布线区与所述第一区之间间隔第一距离；所述第一区内至少相对分布的一对位置区用作所述触控层设置于所述显示基板上时的对位标记。
在一些实施例中，所述第一距离大于0且小于所述第二区沿远离所述显示区方向的宽度。
在一些实施例中，还包括盖板，所述盖板设置于所述触控层的背离所述显示基板的一侧；
所述盖板包括中心区和围设在所述中心区外围的油墨区；
所述显示区落入所述中心区在所述显示基板上的正投影范围内，在所述显示基板所在平面内，沿远离所述显示区的方向，所述油墨区位于所述第一区的远离所述显示区的一侧，且所述油墨区与所述第一区之间间隔第二距离；所述第一区内至少相对分布的一对位置区用作所述盖板设置于所述显示基板上时的对位标记。
在一些实施例中，所述第二距离大于0且小于所述第二区沿远离所述显示区方向的宽度。
在一些实施例中，所述第二距离大于所述第一距离。
在一些实施例中，所述触控层设置时，所述对位标记的沿远离所述显示区方向的宽度L满足L≤(B-Δb)/k，0<k<1；其中，B为所述第一距离；Δb为所述触控层的设置公差；k为对位设备可识别的所述对位标记的最小宽度变化率。
在一些实施例中，所述盖板设置时，所述对位标记的沿远离所述显示区方向的宽度L满足L≤(C-Δc)/k(1-k)，0<k<1；其中，C为所述第二距离；Δc为所述盖板的设置公差；k为对位设备可识别的所述对位标记的最小宽度变化率。
在一些实施例中，所述显示区的形状包括圆角四边形，所述第一区内对应所述圆角四边形的一对对角位置区用作所述对位标记。
在一些实施例中，所述显示区的形状包括圆角四边形，所述第一区内对应所述圆角四边形的两对对角位置区用作所述对位标记。
在一些实施例中，所述第一区内对应所述圆角四边形的至少一组相对边上分别设置有一个位置区，所述位置区用作所述对位标记。
在一些实施例中，所述第一区整体用作所述对位标记。
在一些实施例中，所述显示区的形状包括多边形，所述第一区内对应所述多边形的两个角位置区用作所述对位标记，所述多边形的两个角位置区相对。
在一些实施例中，所述显示区的形状包括多边形，所述第一区内对应所述多边形的各个角位置区均用作所述对位标记。
在一些实施例中，所述第一区内对应所述多边形的各条边上均有一个位置区用作所述对位标记。
第二方面，本公开实施例提供一种显示装置，包括上述显示面板。
第三方面，本公开实施例提供一种显示面板的制备方法，包括：制备显示基板；
所述显示基板包括显示区，围设在所述显示区外围的边框区，所述边框区包括第一区和第二区，所述第一区围设在所述显示区外围，所述第二区围设在所述第一区外围；制备显示基板包括制备多个电学功能层，所述多个电学功能层分别位于不同层，所述多个电学功能层中至少有部分膜层局部叠置；所述电学功能层至少部分分布于所述显示区，且至少部分分布于所述第一区和所述第二区，所述第一区的光线透过率高于所述第二区和所述显示区的光线透过率。
在一些实施例中，还包括：在所述显示基板的出光侧制备触控层；
所述在所述显示基板的出光侧制备触控层包括：将所述触控层与所述显示基板进行对位；所述第一区内至少相对分布的一对位置区用作所述触控层制备时的对位标记；
所述将所述触控层与所述显示基板进行对位包括：
将所述触控层与所述显示基板进行对位，使所述触控层的触控区与所述显示基板的显示区相对应，并使所述显示基板的各用作所述对位标记的位置区相对所述触控层的布线区的裸露宽度相等。
在一些实施例中，还包括：在所述触控层的背离所述显示基板的一侧制备盖板；所述在所述触控层的背离所述显示基板的一侧制备盖板包括：将盖板与制备有所述触控层的所述显示基板进行对位；所述第一区内至少相对分布的一对位置区用作所述盖板制备时的对位标记；
所述将盖板与制备有所述触控层的所述显示基板进行对位包括：
将所述盖板与所述显示基板进行对位，使所述盖板的中心区与所述显示基板的显示区相对应，并使所述显示基板的各用作所述对位标记的位置区相对所述盖板的油墨区的裸露宽度相等。
附图说明
附图用来提供对本公开实施例的进一步理解，并且构成说明书的一部分，与本公开实施例一起用于解释本公开，并不构成对本公开的限制。通 过参考附图对详细示例实施例进行描述，以上和其它特征和优点对本领域技术人员将变得更加显而易见，在附图中：
图1为本公开实施例中一种显示面板中显示基板的结构俯视图；
图2为图1中A区的放大结构俯视图；
图3为本公开实施例中一种显示面板的结构剖视图。
图4为本公开实施例中另一种显示面板中显示基板的结构俯视图；
图5为本公开实施例中又一种显示面板中显示基板的结构俯视图；
图6为本公开实施例中又一种显示面板中显示基板的结构俯视图；
图7为本公开实施例中又一种显示面板中显示基板的结构俯视图；
图8为本公开另一实施例中一种显示面板中显示基板的结构俯视图；
图9为本公开另一实施例中另一种显示面板中显示基板的结构俯视图；
图10为本公开另一实施例中又一种显示面板中显示基板的结构俯视图。
其中附图标记为：
1、显示区；2、边框区；21、第一区；210、位置区；22、第二区；3、触控层；31、触控区；32、布线区；4、盖板；41、中心区；42、油墨区；5、显示基板。
具体实施方式
为使本领域技术人员更好地理解本公开实施例的技术方案，下面结合附图和具体实施方式对本公开实施例提供的一种显示面板及其制备方法和显示装置作进一步详细描述。
在下文中将参考附图更充分地描述本公开实施例，但是所示的实施例可以以不同形式来体现，且不应当被解释为限于本公开阐述的实施例。反之，提供这些实施例的目的在于使本公开透彻和完整，并将使本领域技术人员充分理解本公开的范围。
本公开实施例不限于附图中所示的实施例，而是包括基于制造工艺而形成的配置的修改。因此，附图中例示的区具有示意性属性，并且图中所示区的形状例示了区的具体形状，但并不是旨在限制性的。
当OLED(OrganicLight-Emitting Diode)显示背板经过前段所有工艺到达盖板玻璃贴合工艺段时，显示背板多余边角都已通过激光切割去除，没有多余空间摆放对位标记(即对位Mark)；此时，通过相机对显示背板的定位只能借用显示背板内部一些成像后易于识别的结构。为此，显示背板上也需要做出调整，以满足相机对图形的识别以及对位精度要求，同时不影响显示面板的基本结构以及显示效果。
针对上述盖板玻璃贴合时没有多余空间摆放对位标记的问题以及借用显示背板内部某些成像后易于识别结构作为对位标记的设计构思，本公开实施例提供一种显示面板及其制备方法和显示装置。
本公开实施例提供一种显示面板，如图1和图2所示，包括：显示基板5显示基板5包括显示区1，围设在显示区1外围的边框区2，边框区2包括第一区21和第二区22，第一区21围设在显示区1外围，第二区22围设在第一区21外围；显示基板还包括多个电学功能层，多个电学功能层分别位于不同层，多个电学功能层中至少有部分膜层图形局部叠置；电学功能层至少部分分布于显示区1，且至少部分分布于第一区21和第二区22，第一区21的光线透过率高于第二区22和显示区1的光线透过率。一般的，第一区21的透过率为10％-20％，第二区22的透过率小于1％，显示区1的透过率2％-8％。
通过将显示基板5第一区21的光线透过率设计为高于第二区22和显示区1的光线透过率，使得显示基板5的第一区21的外界光线透过率最高，显示区1的外界光线透过率次之，第二区22的外界光线透过率最低；从而使透过第一区21外界光线与透过第二区22和显示区1的外界光线能够形 成强烈的亮度差异，从而使显示基板5的第一区21的至少部分能作为显示基板5出光侧设置后续膜层时的对位标记。
其中，该显示面板为OLED(OrganicLight-Emitting Diode)显示面板。
通过使第一区21的光线透过率高于第二区22和显示区1的光线透过率，在显示基板5的出光侧设置后续膜层时，可以通过调节后续膜层与第一区21的至少部分之间的相对位置关系，使对位使用的相机等设备能通过识别视野中后续膜层对第一区21的至少部分的遮挡而形成的视场明暗区图形进行对位，从而实现对后续膜层的精确对位；由于第一区21形成于显示基板5的内部边框区2，所以第一区21的设置无需占用显示基板5的其他空间，节约了显示基板的边框区2空间；采用第一区21的至少部分作为对位标记，能够满足对对位精度要求不是很高的后续膜层的对位精度要求，且采用第一区21的至少部分作为对位标记，不影响该显示面板的正常电路结构和显示效果。
在一些实施例中，后续膜层可以通过贴合的方式贴设于显示基板5的出光侧，也可以通过直接制作的方式形成于显示基板5的出光侧；无论贴设还是直接制作的方式形成后续膜层，都会需要采用第一区21的至少部分作为对位标记进行对位。
在一些实施例中，第一区21沿远离显示区1方向的宽度L范围为10-350μm。第一区21的宽度L范围设置，一方面能使后续膜层与显示基板在对位时有充分的可调节的空间，另一方面能够确保后续膜层设置时的对位精度。
可选的，第一区21沿远离显示区1方向的宽度L为150μm。该第一区21的宽度L值，为经过试验获得的能够确保后续膜层设置时的对位精度的最佳宽度值。
在一实施例中，显示基板包括晶体管以及与晶体管电连接的有机发光二极管；电学功能层包括半导体层，栅极层，源漏金属层，阳极层；半导 体层包括晶体管的有源层；栅极层包括栅线、晶体管的栅极；源漏金属层包括晶体管的源极和漏极、数据线、电源线；阳极层包括有机发光二极管的阳极；电学功能层以及其叠置部分在显示区1的分布密度大于其在第一区21的分布密度且小于其在第二区22的分布密度。这使得显示基板的第一区21的外界光线透过率最高，显示区1的外界光线透过率次之，第二区22的外界光线透过率最低；从而使透过第一区21外界光线与透过第二区22和显示区1的外界光线能够形成强烈的亮度差异，从而使显示基板5的第一区21的至少部分能作为后续膜层设置时的对位标记；同时，第一区21在电学功能层形成后自然形成，无需单独制备，从而优化了显示面板结构以及工艺过程。
在一些实施例中，电学功能层还包括与其同层设置的其他功能层，例如：电学功能层还包括电性转接层，电性转接层形成于第一区和第二区，比如显示区中的电性转接层VSS可以通过阳极层转接到源漏金属层等。
在一些实施例中，如图3所示，显示面板还包括触控层3，触控层3设置于显示基板5的出光侧；触控层3包括触控区31和围设在触控区31外围的布线区32，触控区31的形状与显示区1的形状相同；显示区1落入触控区31在显示基板5上的正投影范围内；在显示基板5所在平面内，沿远离显示区1的方向，布线区32在显示基板5上的正投影位于第一区21的远离显示区1的一侧，且布线区32与第一区21之间间隔第一距离B；第一区21内至少相对分布的一对位置区210用作触控层3设置于显示基板5上时的对位标记。第一距离B的设置，便于触控层3设置于显示基板5上时的对位调整。
在一些实施例中，第一距离B大于0且小于第二区22沿远离显示区1方向的宽度。如此设置，能实现触控层3设置于显示基板5上时的准确对位调整。
在一些实施例中，触控层3设置时，对位标记的沿远离显示区1方向 的宽度L满足L≤(B-Δb)/k，0<k<1；其中，B为第一距离；Δb为触控层3的设置公差；k为对位设备可识别的对位标记的最小宽度变化率。用作对位标记的位置区210的沿远离显示区1方向的宽度L满足上述要求，才能确保触控层3与显示基板5对位时，触控层3的设置公差不会影响触控层3的对位精度，从而使触控层3通过该对位标记与显示基板5对位时能满足其对位精度要求。例如，Δb为120μm-180μm，B为180μm-250μm,L为10-350μm。
在一些实施例中，显示面板还包括盖板4，盖板4设置于触控层3的背离显示基板5的一侧；盖板4包括中心区41和围设在中心区41外围的油墨区42，中心区41的形状与显示区1的形状相同；显示区1落入中心区41在显示基板5上的正投影范围内，在显示基板5所在平面内，沿远离显示区1的方向，油墨区42位于第一区21的远离显示区1的一侧，且油墨区42与第一区21之间间隔第二距离C；第一区21内至少相对分布的一对位置区210用作盖板4设置于显示基板5上时的对位标记。第二距离C的设置，便于盖板4设置于显示基板5上时的对位调整。
在一些实施例中，第二距离C大于0且小于第二区22沿远离显示区1方向的宽度。如此设置，能实现触控层3设置于显示基板5上时的准确对位调整。
在一些实施例中，盖板4设置时，对位标记的沿远离显示区1方向的宽度L满足L≤(C-Δc)/k(1-k)，0<k<1；其中，C为第二距离；Δc为盖板4的设置公差；k为对位设备可识别的对位标记的最小宽度变化率。例如，Δc为160μm-240μm，C为10-350μm，L为10-350μm，用作对位标记的位置区210的沿远离显示区1方向的宽度L满足上述要求，才能确保盖板4与显示基板5对位时，盖板4的设置公差不会影响盖板4的设置精度，从而使盖板4通过该对位标记与显示基板对位时能满足其对位精度要求。
在一些实施例中，第二距离C大于第一距离B。如此能够进一步实现在 先设置的触控层3和在后设置的盖板4分别准确对位。
在一些实施例中，显示区1的形状包括圆角四边形，第一区21内对应圆角四边形的一对对角位置区210用作对位标记。通过将第一区21内对应圆角四边形的一对对角位置区210用作对位标记，在后续膜层与显示基板进行对位设置时，使显示基板的位置保持固定，对处于某一平面(该平面与显示基板所在面平行)内的后续膜层的位置进行前后左右调整，直至后续膜层的与对角位置区210对应的周边区域相对该对角位置区210的位置相同(如后续膜层的与对角位置区210对应的周边区域与该对角位置区210的间距相同，或者，后续膜层的与对角位置区210对应的周边区域对该对角位置区210的覆盖宽度相同等)，则认为对位完成，可以进行后续膜层的设置(如贴合)。第一区21内对应圆角四边形的一对对角位置区210用作对位标记，可以对后续膜层的设置位置进行唯一确定，所以只要第一区21内对应圆角四边形的一对对角位置区210满足对位精度要求，即可确保后续膜层的对位设置精度。
在一些实施例中，该四边形为矩形，且矩形的四个角的边缘线为弧线，即矩形四个角均设置为弧形导角，该四边形为圆角四边形，相应地，第一区21内用作对位标记的对应圆角四边形的一对对角位置区210的边缘线也为弧线。
在一些实施例中，该圆角四边形也可以是形状不规则的任意圆角四边形，且四边形的四个角的边缘线也可以为直线，即四边形的四个角均未设置导角，相应地，第一区内用作对位标记的对应四边形的一对对角位置区的边缘线也可以为直线。
在一些实施例中，如图4所示，显示区1的形状包括圆角四边形，第一区21内对应圆角四边形的两对对角位置区210用作对位标记。通过使第一区21内对应圆角四边形的两对对角位置区210都用作对位标记，在对后续膜层的设置位置进行唯一确定的情况下，能够进一步确保后续膜层的对 位设置精度。
进一步地，在一些实施例中，如图5所示，第一区21内对应圆角四边形的至少一组相对边上分别设置有一个位置区210，该位置区210用作对位标记。即圆角四边形一组相对的边，每边上设置有一个位置区210。即在第一区21内对应圆角四边形的四个角位置区210作为对位标记的情况下，又增加了第一区21内对应圆角四边形相对两条边上分别设置的两个位置区210作为对位标记，即一共有六个位置区210作为对位标记。如此设置，相对于前述对位标记设置方案，在对后续膜层的设置位置进行唯一确定的情况下，能够进一步确保后续膜层的对位设置精度。
需要说明的是，在第一区内对应圆角四边形的周边可以增设多个位置区作为对位标记，从而在对后续膜层的设置位置进行唯一确定的情况下，更进一步地确保后续膜层的对位设置精度。
在一些实施例中，如图6所示，第一区21整体用作对位标记。其中，第一区21连续且封闭地围设于显示区1的外围。如此设置，相对于前述对位标记设置方案，在对后续膜层的对位位置进行唯一确定的情况下，能够进一步确保后续膜层的对位设置精度。
需要说明的是，如图7所示，第一区21也可以间断地围设于显示区1的外围，且第一区21整体用作对位标记。
基于显示面板的上述结构，本公开实施例还提供一种该显示面板的制备方法，包括：步骤S1：制备显示基板。
显示基板包括显示区，围设在显示区外围的边框区，边框区包括第一区和第二区，第一区围设在显示区外围，第二区围设在第一区外围；制备显示基板包括制备多个电学功能层，多个电学功能层分别位于不同层，多个电学功能层中至少有部分膜层局部叠置；电学功能层至少部分分布于显示区，且至少部分分布于第一区和第二区，第一区的光线透过率高于第二区和显示区的光线透过率。
该显示面板的制备方法还包括步骤S2：在显示基板的出光侧制备触控层。
在一些实施例中，在显示基板的出光侧制备触控层包括：将触控层与显示基板进行对位；第一区内至少相对分布的一对位置区用作触控层制备时的对位标记。
将触控层与显示基板进行对位具体包括：将触控层与显示基板进行对位，使触控层的触控区与显示基板的显示区相对应，并使显示基板的各用作对位标记的位置区相对触控层的布线区的裸露宽度相等。
在一些实施例中，触控层的制备指将触控层贴设于显示基板出光侧，触控层贴设时，需要将触控层与显示基板进行对位，然后将触控层与显示基板进行贴合。
在一些实施例中，显示面板的制备方法还包括步骤S3：在触控层的背离显示基板的一侧制备盖板。
在一些实施例中，在触控层的背离显示基板的一侧制备盖板包括：将盖板与制备有触控层的显示基板进行对位；第一区内至少相对分布的一对位置区用作盖板制备时的对位标记。
将盖板与制备有触控层的显示基板进行对位具体包括：将盖板与显示基板进行对位，使盖板的中心区与显示基板的显示区相对应，并使显示基板的各用作对位标记的位置区相对盖板的油墨区的裸露宽度相等。
在一些实施例中，盖板的制备指将盖板贴设于触控层的背离显示基板的一侧，盖板贴设时，需要将盖板与显示基板进行对位，然后将盖板与显示基板进行贴合。
本公开实施例还提供一种显示面板，与上述实施例中不同的是，如图8所示，显示区1的形状包括多边形，第一区21内对应多边形的两个角位置区210用作对位标记，多边形的两个角位置区210相对。其中，多边形如 正六边形。第一区21内对应多边形的两个位置相对的角位置区210用作对位标记，可以对后续膜层的设置位置进行唯一确定，所以只要第一区21内对应多边形的两个位置相对的角位置区210满足对位精度要求，即可确保后续膜层的对位设置精度。
需要说明的是，显示区1的形状也可以为不规则多边形。
在一些实施例中，如图9所示，显示区1的形状包括多边形，例如，显示区1的形状为正六边形，第一区21内对应多边形的各个角位置区210均用作对位标记。通过使第一区21内对应多边形的各个角位置区210都用作对位标记，在对后续膜层的设置位置进行唯一确定的情况下，能够进一步确保后续膜层的对位设置精度。其中，显示区1的形状可以为规则多边形，也可以为不规则多边形。
进一步地，在一些实施例中，如图10所示，第一区21内对应多边形的各条边上均有一个位置区210用作对位标记。即在第一区21内对应多边形的各个角位置区210作为对位标记的情况下，又增加了第一区21内对应多边形各条边上均有一个位置区210作为对位标记，即对于正六边形来说，一共有十二个位置区210作为对位标记。如此设置，相对于前述对位标记设置方案，在对后续膜层的设置位置进行唯一确定的情况下，能够进一步确保后续膜层的对位设置精度。
需要说明的是，在第一区内对应多边形的周边可以增设多个位置区作为对位标记，从而在对后续膜层的设置位置进行唯一确定的情况下，更进一步地确保后续膜层的对位设置精度。
本实施例中显示面板的其他结构以及显示面板的制备方法与上述实施例中相同，此处不再赘述。
上述实施例中所提供的显示面板，通过使第一区的光线透过率高于第二区和显示区的光线透过率，在后续膜层对位设置时，可以通过调节后续膜层与第一区21的至少部分之间的相对位置关系，使对位使用的相机等设 备能通过识别视野中后续膜层对第一区的至少部分的遮挡而形成的视场明暗区图形进行对位，从而实现对后续膜层的精确对位；由于第一区形成于显示基板的内部边框区，所以第一区的设置无需占用显示基板的其他空间，节约了显示基板的边框区空间；采用第一区的至少部分作为对位标记，能够满足对对位精度要求不是很高的后续膜层的设置精度要求，且采用第一区的至少部分作为对位标记，不影响该显示面板的正常电路结构和显示效果。
本公开实施例还提供一种显示装置，包括上述任一实施例中的显示面板。
该显示装置通过采用上述任一实施例中的显示面板，优化了该显示装置的结构以及工艺过程，同时能够确保该显示装置的正常电路结构和显示效果。
本公开实施例所提供的显示装置可以为OLED面板、OLED电视、LCD面板、LCD电视、显示器、手机、导航仪等任何具有显示功能的产品或部件。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (21)

  1. 一种显示面板，其特征在于，包括：显示基板，所述显示基板包括显示区，围设在所述显示区外围的边框区，所述边框区包括第一区和第二区，所述第一区围设在所述显示区外围，所述第二区围设在所述第一区外围；
    所述显示基板还包括多个电学功能层，所述多个电学功能层分别位于不同层，所述多个电学功能层中至少有部分膜层局部叠置；所述电学功能层至少部分分布于所述显示区，且至少部分分布于所述第一区和所述第二区，所述第一区的光线透过率高于所述第二区和所述显示区的光线透过率。
  2. 根据权利要求1所述的显示面板，其特征在于，所述第一区沿远离所述显示区方向的宽度范围为10-350μm。
  3. 根据权利要求2所述的显示面板，其特征在于，所述显示基板包括晶体管以及与所述晶体管电连接的有机发光二极管；
    所述电学功能层包括半导体层，栅极层，源漏金属层，阳极层；
    所述半导体层包括所述晶体管的有源层；所述栅极层包括栅线、所述晶体管的栅极；所述源漏金属层包括所述晶体管的源极和漏极、数据线、电源线；所述阳极层包括所述有机发光二极管的阳极；
    所述电学功能层以及其叠置部分在所述显示区的分布密度大于其在所述第一区的分布密度且小于其在所述第二区的分布密度。
  4. 根据权利要求3所述的显示面板，其特征在于，还包括触控层，所述触控层设置于所述显示基板的出光侧；所述触控层包括触控区和围设在所述触控区外围的布线区；
    所述显示区落入所述触控区在所述显示基板上的正投影范围内；在所述显示基板所在平面内，沿远离所述显示区的方向，所述布线区在所述显示基板上的正投影位于所述第一区的远离所述显示区的一侧，且所述布线区与所述第一区之间间隔第一距离；所述第一区内至少相对分布的一对位置区用作所述触控层设置于所述显示基板上时的对位标记。
  5. 根据权利要求4所述的显示面板，其特征在于，所述第一距离大于0且小于所述第二区沿远离所述显示区方向的宽度。
  6. 根据权利要求5所述的显示面板，其特征在于，还包括盖板，所述盖板设置于所述触控层的背离所述显示基板的一侧；
    所述盖板包括中心区和围设在所述中心区外围的油墨区；
    所述显示区落入所述中心区在所述显示基板上的正投影范围内，在所述显示基板所在平面内，沿远离所述显示区的方向，所述油墨区位于所述第一区的远离所述显示区的一侧，且所述油墨区与所述第一区之间间隔第二距离；所述第一区内至少相对分布的一对位置区用作所述盖板设置于所述显示基板上时的对位标记。
  7. 根据权利要求6所述的显示面板，其特征在于，所述第二距离大于0且小于所述第二区沿远离所述显示区方向的宽度。
  8. 根据权利要求7所述的显示面板，其特征在于，所述第二距离大于所述第一距离。
  9. 根据权利要求5所述的显示面板，其特征在于，所述触控层设置时，所述对位标记的沿远离所述显示区方向的宽度L满足L≤(B-Δb)/k， 0<k<1；其中，B为所述第一距离；Δb为所述触控层的设置公差；k为对位设备可识别的所述对位标记的最小宽度变化率。
  10. 根据权利要求7所述的显示面板，其特征在于，所述盖板设置时，所述对位标记的沿远离所述显示区方向的宽度L满足L≤(C-Δc)/k(1-k)，0<k<1；其中，C为所述第二距离；Δc为所述盖板的设置公差；k为对位设备可识别的所述对位标记的最小宽度变化率。
  11. 根据权利要求4或6所述的显示面板，其特征在于，所述显示区的形状包括圆角四边形，所述第一区内对应所述圆角四边形的一对对角位置区用作所述对位标记。
  12. 根据权利要求4或6所述的显示面板，其特征在于，所述显示区的形状包括圆角四边形，所述第一区内对应所述圆角四边形的两对对角位置区用作所述对位标记。
  13. 根据权利要求12所述的显示面板，其特征在于，所述第一区内对应所述圆角四边形的至少一组相对边上分别设置有一个位置区，所述位置区用作所述对位标记。
  14. 根据权利要求4或6所述的显示面板，其特征在于，所述第一区整体用作所述对位标记。
  15. 根据权利要求4或6所述的显示面板，其特征在于，所述显示区的形状包括多边形，所述第一区内对应所述多边形的两个角位置区用作所述对位标记，所述多边形的两个角位置区相对。
  16. 根据权利要求4或6所述的显示面板，其特征在于，所述显示区的形状包括多边形，所述第一区内对应所述多边形的各个角位置区均用作所述对位标记。
  17. 根据权利要求16所述的显示面板，其特征在于，所述第一区内对应所述多边形的各条边上均有一个位置区用作所述对位标记。
  18. 一种显示装置，其特征在于，包括权利要求1-17任意一项所述的显示面板。
  19. 一种显示面板的制备方法，其特征在于，包括：制备显示基板；
    所述显示基板包括显示区，围设在所述显示区外围的边框区，所述边框区包括第一区和第二区，所述第一区围设在所述显示区外围，所述第二区围设在所述第一区外围；制备显示基板包括制备多个电学功能层，所述多个电学功能层分别位于不同层，所述多个电学功能层中至少有部分膜层局部叠置；所述电学功能层至少部分分布于所述显示区，且至少部分分布于所述第一区和所述第二区，所述第一区的光线透过率高于所述第二区和所述显示区的光线透过率。
  20. 根据权利要求19所述的显示面板的制备方法，其特征在于，还包括：在所述显示基板的出光侧制备触控层；
    所述在所述显示基板的出光侧制备触控层包括：将所述触控层与所述显示基板进行对位；所述第一区内至少相对分布的一对位置区用作所述触控层制备时的对位标记；
    所述将所述触控层与所述显示基板进行对位包括：
    将所述触控层与所述显示基板进行对位，使所述触控层的触控区与所述显示基板的显示区相对应，并使所述显示基板的各用作所述对位标记的位置区相对所述触控层的布线区的裸露宽度相等。
  21. 根据权利要求20所述的显示面板的制备方法，其特征在于，还包括：在所述触控层的背离所述显示基板的一侧制备盖板；所述在所述触控层的背离所述显示基板的一侧制备盖板包括：将盖板与制备有所述触控层的所述显示基板进行对位；所述第一区内至少相对分布的一对位置区用作所述盖板制备时的对位标记；
    所述将盖板与制备有所述触控层的所述显示基板进行对位包括：
    将所述盖板与所述显示基板进行对位，使所述盖板的中心区与所述显示基板的显示区相对应，并使所述显示基板的各用作所述对位标记的位置区相对所述盖板的油墨区的裸露宽度相等。
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