CN111863904A - Display panel and preparation method thereof, display device, mask and mask assembly - Google Patents

Display panel and preparation method thereof, display device, mask and mask assembly Download PDF

Info

Publication number
CN111863904A
CN111863904A CN202010731758.8A CN202010731758A CN111863904A CN 111863904 A CN111863904 A CN 111863904A CN 202010731758 A CN202010731758 A CN 202010731758A CN 111863904 A CN111863904 A CN 111863904A
Authority
CN
China
Prior art keywords
area
evaporation
pixels
edge
display
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.)
Granted
Application number
CN202010731758.8A
Other languages
Chinese (zh)
Other versions
CN111863904B (en
Inventor
薛龙辉
张微
黄炜赟
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 CN202010731758.8A priority Critical patent/CN111863904B/en
Publication of CN111863904A publication Critical patent/CN111863904A/en
Application granted granted Critical
Publication of CN111863904B publication Critical patent/CN111863904B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • 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
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • 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
    • H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
    • 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
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
    • H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention relates to a display panel, a preparation method of the display panel, a display device, a mask and a mask assembly. The display panel includes: the light transmittance of the first display area is greater than that of the second display area; the first display area comprises a plurality of first sub-pixels, and the first sub-pixels are organic light-emitting sub-pixels; at least two first sub-pixels share the same first cathode; the number of the first cathodes is more than 1, and a gap exists between every two adjacent first cathodes. According to the embodiment of the invention, the area which is not covered by the first cathode exists in the first display area, and the light transmittance of the first display area is improved.

Description

Display panel and preparation method thereof, display device, mask and mask assembly
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a preparation method of the display panel, a display device, a mask and a mask assembly.
Background
With the development of technology, the market demand for a display panel with a high screen ratio is more and more urgent, and the display panel is developing towards full screen and light and thin. The full screen camera technology is realized without opening the screen, namely when the imaging function is not needed, the area corresponding to the camera and other areas of the display panel execute the light emitting function; when the camera is required to execute the camera shooting function, the region corresponding to the camera executes the light transmission function. However, the region corresponding to the camera needs a high optical transmittance when the camera performs a camera function, and the transmittance of other regions of the display panel is far from meeting the requirements of the camera. Therefore, how to increase the transmittance of the region corresponding to the camera is a technical problem to be solved.
Disclosure of Invention
The invention provides a display panel, a preparation method thereof, a display device, a mask and a mask assembly, and aims to overcome the defects in the related art.
According to a first aspect of embodiments of the present invention, there is provided a display panel including: the display panel comprises a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area;
the first display area comprises a plurality of first sub-pixels, and the first sub-pixels are organic light-emitting sub-pixels; at least two first sub-pixels share the same first cathode; the number of the first cathodes is more than 1, and a gap exists between every two adjacent first cathodes.
In one embodiment, the first display region includes a plurality of first pixels, which are organic light emitting pixels; the same first pixel comprises at least two first sub-pixels, and all the first sub-pixels in the same first pixel share the same first cathode.
In one embodiment, the display panel further includes a substrate, the plurality of first pixels being located on the substrate; the first sub-pixels comprise first anodes, and in the same first pixel, the projections of the first anodes of all the first sub-pixels on the substrate are positioned in the projection of the first cathodes on the substrate.
In one embodiment, the first cathode is an N-sided polygon, N being a natural number greater than or equal to 4; the area of the first cathode is inversely related to N.
In one embodiment, the pixel density of the first display area is less than the pixel density of the second display area; the second display area comprises a plurality of second sub-pixels, and the second sub-pixels are organic light-emitting sub-pixels; all the second sub-pixels in the second display area share the same second cathode; the first cathode is electrically connected with the second cathode; the second display area at least partially surrounds the first display area, or the first display area and the second display area are arranged in parallel.
In one embodiment, the first display area is trapezoidal or rectangular; when the first display area is trapezoidal, the first display area comprises a first edge and a second edge, the first edge is parallel to the second edge, and the side length of the first edge is greater than that of the second edge; the second display area includes a third edge, the first edge being flush with the third edge, the second edge being adjacent to the second display area.
According to a second aspect of the embodiments of the present invention, there is provided a display device, a photosensitive device and a display panel including the photosensitive device, wherein a projection of the photosensitive device on the display panel is located in the first display area.
According to a third aspect of the embodiments of the present invention, there is provided a mask including: the evaporation coating device comprises a first shielding area and evaporation coating units arranged along a first direction, wherein the first shielding area surrounds the evaporation coating units; the evaporation unit comprises a first evaporation area and a second evaporation area, and the opening area of the second evaporation area is larger than that of the first evaporation area; the first evaporation coating area comprises M first openings and a second shielding area, M is a natural number larger than 1, the second shielding area is located between every two adjacent first openings, and the first openings are used for evaporating a first cathode.
In one embodiment, the first opening is an N-sided polygon, where N is a natural number greater than or equal to 4; the area of the first opening is inversely related to N.
In one embodiment, the second evaporation zone includes only one second opening, and a part of the M first openings communicates with the second opening, and the second opening is used for evaporating a second cathode.
In one embodiment, the second evaporation region at least partially surrounds the first evaporation region, or the first evaporation region and the second evaporation region are arranged in parallel.
In one embodiment, the first evaporation area is trapezoidal or rectangular; when the first evaporation area is trapezoidal, the first evaporation area comprises a fourth edge and a fifth edge, the fourth edge is parallel to the fifth edge, and the side length of the fourth edge is greater than that of the fifth edge; the second evaporation coating zone comprises a sixth edge, the fourth edge is flush with the sixth edge and is adjacent to the first shielding zone, and the fifth edge is adjacent to the second evaporation coating zone.
In one embodiment, the second direction comprises at least two rows of evaporation units arranged along the first direction.
According to a fourth aspect of the embodiments of the present invention, there is provided a reticle assembly including: the mask comprises a metal frame, a first mask and a second mask;
the first mask is located on the metal frame and comprises a third shielding area and a third opening, and the third shielding area surrounds the third opening;
the second mask is located on the first mask, the second mask is the mask of the third aspect, the projection of the evaporation unit on the first mask is located in the third opening, and the projection of the first shielding area on the first mask is located in the third shielding area.
According to a fifth aspect of the embodiments of the present invention, there is provided a method for manufacturing a display panel, wherein the mask assembly of the fourth aspect is adopted to evaporate the cathode of the display panel of the first aspect, and the cathode of the display panel includes the first cathode.
According to the embodiments, at least two first sub-pixels in the first display area share the same first cathode, and a gap exists between two adjacent first cathodes, so that an area not covered by the first cathode exists in the first display area, and the light transmittance of the first display area can be improved.
Because the first evaporation coating area on the mask comprises M first openings and a second shielding area, and the second shielding area is positioned between two adjacent first openings, the first cathode in the first display area can be evaporated by adopting the mask, and a gap exists between two adjacent first cathodes, so that an area which is not covered by the first cathode exists in the first display area, and the light transmittance of the first display area is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram illustrating another display panel according to an embodiment of the present invention;
fig. 8 is a schematic structural view illustrating another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a reticle according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of another reticle according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of another reticle according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of another reticle structure according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of another reticle structure according to an embodiment of the present invention;
FIG. 14 is a schematic structural diagram of another reticle according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of another reticle structure according to an embodiment of the present invention;
FIG. 16 is a schematic structural diagram of another reticle according to an embodiment of the present invention;
FIG. 17 is a block diagram of a reticle assembly according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram of another reticle assembly according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The embodiment of the invention provides a display panel. As shown in fig. 1, the display panel 11 includes: a first display area 111 and a second display area 112. The light transmittance of the first display region 111 is greater than that of the second display region 112.
In the embodiment, as shown in fig. 2, the first display region 111 includes a plurality of first sub-pixels 21, the first sub-pixels 21 are organic light emitting sub-pixels, and at least two first sub-pixels 21 share the same first cathode 22; the number of the first cathodes 22 is greater than 1, and a gap exists between two adjacent first cathodes 22.
In this embodiment, at least two first sub-pixels in the first display area share the same first cathode, and a gap exists between two adjacent first cathodes, so that an area not covered by the first cathode exists in the first display area, and the light transmittance of the first display area can be improved.
The display panel provided by the embodiment of the invention is briefly described above, and the display panel provided by the embodiment of the invention is described in detail below.
The embodiment of the invention provides a display panel. As shown in fig. 1, the display panel 11 includes: a first display area 111 and a second display area 112. The light transmittance of the first display region 111 is greater than that of the second display region 112.
In the embodiment, as shown in fig. 2, the first display region 111 includes a plurality of first pixels 23, and the plurality of first pixels 23 may be arranged in an array, but is not limited thereto. Among them, the first pixel 23 may be an organic light emitting pixel. The second display region 112 may include a plurality of second pixels (not shown) therein, and the plurality of second pixels may be arranged in an array, but is not limited thereto. Wherein the second pixel may be an organic light emitting pixel. The pixel density of the first display region 111 is less than that of the second display region 112, and thus, the light transmittance of the first display region can be improved.
It should be noted that, although only two rows of first pixels 23 are shown in fig. 2, in practical applications, one or more rows of first pixels 23 may be disposed in the first display region 111.
In the present embodiment, the display panel 11 further includes a substrate (not shown). A plurality of first pixels 23 are located on the substrate.
In the present embodiment, as shown in fig. 2, the same first pixel 23 includes 4 first sub-pixels 21, and the 4 first sub-pixels 21 are organic light emitting sub-pixels. For example, the same first pixel 23 may include a first red sub-pixel 211, two first green sub-pixels 212, and a first blue sub-pixel 213, but is not limited thereto. All first sub-pixels 21 in the same first pixel 23 share the same first cathode 22.
In the present embodiment, each of the first sub-pixels 21 includes a first anode (not shown), an organic light emitting layer (not shown) and a first cathode 22, the organic light emitting layer being located between the first anode and the first cathode 22. In the same first pixel 23, the projections of the first anodes of all the first sub-pixels 21 onto the substrate are located within the projection of the first cathodes of this first pixel 23 onto the substrate.
In the present embodiment, the number of the first cathodes 22 is the same as the number of the first pixels 23, and a gap exists between two adjacent first cathodes 22.
In the above, the detailed description is given by taking the example that all the first sub-pixels 21 in the same first pixel 23 share the same first cathode 22, in practical applications, a scheme that at least two first sub-pixels 21 share the same first cathode 22 may also be adopted, for example, 3 or 2 first sub-pixels 21 share the same first cathode 22, but the invention is not limited thereto.
In this embodiment, at least two first sub-pixels in the first display area share the same first cathode, and a gap exists between two adjacent first cathodes, so that an area not covered by the first cathode exists in the first display area, and the light transmittance of the first display area can be improved.
In the present embodiment, as shown in fig. 2, the first cathode 22 has a quadrangular shape, for example, a rectangular shape.
In another embodiment, as shown in fig. 3, the first cathode 22 is an octagon, the inner angle of the octagon is 90 degrees or 270 degrees, each side of the first cathode 22 is closer to the same first sub-pixel 21, the area of the first cathode 22 is smaller, and the light transmittance of the first display region 111 can be further improved.
In another embodiment, as shown in fig. 4, the first cathode 22 is a fourteen-sided polygon, the inner angle of the fourteen-sided polygon is 90 degrees or 270 degrees, each side of the first cathode 22 is closer to the same first sub-pixel 21, and the area of the first cathode 22 is smaller, so as to further improve the light transmittance of the first display region 111.
In another embodiment, as shown in fig. 5, the first cathode 22 is a rounded rectangle, in this embodiment, the same first pixel 23 may include 4 sub-pixels 21, such as a first red sub-pixel 211, two first green sub-pixels 212, and a first blue sub-pixel 213, the arrangement of the 4 sub-pixels 21 is different from that shown in fig. 4, and the 4 sub-pixels 21 are all rectangular.
In another embodiment, as shown in fig. 6, the first cathode 22 is a rounded dodecagon, in this embodiment, the same first pixel 23 may include 4 sub-pixels 21, such as a first red sub-pixel 211, two first green sub-pixels 212, and a first blue sub-pixel 213, and the arrangement of the 4 sub-pixels 21 is different from the arrangement shown in fig. 4.
In summary, the first cathode 22 is an N-sided polygon, where N is a natural number greater than or equal to 4; the area of the first cathode is inversely related to N, i.e. the larger N, the smaller the area of the first cathode 22.
In this embodiment, all the second pixels in the second display area 112 share the same second cathode, which may be a planar electrode, and the first cathode 22 is electrically connected to the second cathode. The second pixel may include at least two second sub-pixels, and the second sub-pixels may be organic light emitting sub-pixels. For example, the second pixel may include 4 second sub-pixels, such as a second red sub-pixel, two second green sub-pixels, and a second blue sub-pixel, but is not limited thereto.
In the present embodiment, each of the second sub-pixels includes a second anode (not shown), an organic light emitting layer (not shown), and a second cathode, and the organic light emitting layer is located between the second anode and the second cathode. The projection of the second anode on the substrate of all the second sub-pixels in the second display area 112 is located within the projection of the second cathode on the substrate.
In the present embodiment, as shown in fig. 2, the second display region 112 may surround the first display region 111 from three sides. The first display region 111 has a rectangular shape as a whole. The boundary line between the first display region 111 and the second display region 112 may be a straight line or a curved line. Of course, the second display area 112 may surround the first display area 111 from both sides.
In another embodiment, as shown in fig. 7, the first display area 111 is trapezoidal, the first display area 111 includes a first edge 71 and a second edge 72, the first edge 71 is parallel to the second edge 72, the first edge 71 has a longer edge than the second edge 72, the second display area 112 includes a third edge 73, the first edge 71 is flush with the third edge 73, and the second edge 72 is adjacent to the second display area 112. In the embodiment, the boundary line between the first display area 111 and the second display area 112 may be a straight line or a curved line.
In another embodiment, as shown in fig. 8, the first display region 111 and the second display region 112 are arranged in parallel. In the present embodiment, only one side of the first display region 111 is adjacent to the second display region 112.
The embodiment of the invention also provides a display device which comprises a photosensitive device and the display panel of any one of the embodiments. The projection of the light sensing device on the display panel is located in the first display area 111.
In one embodiment, the photosensitive device is an image sensor or an ambient light sensor, but is not limited thereto.
In this embodiment, at least two first sub-pixels in the first display area share the same first cathode, and a gap exists between two adjacent first cathodes, so that an area not covered by the first cathode exists in the first display area, which can improve the light transmittance of the first display area, and further improve the photosensitive effect of the photosensitive device.
The embodiment of the invention provides a mask. As shown in fig. 9, the reticle 91 includes: the first shielding region 92 and the evaporation units 93 arranged along the first direction F1, the first shielding region 92 surrounds the evaporation units 93.
As shown in fig. 10, the evaporation unit 93 includes a first evaporation region 931 and a second evaporation region 932, and an opening area of the second evaporation region 932 is larger than an opening area of the first evaporation region 931.
As shown in fig. 11, the first evaporation region 931 includes M first openings 9311 and a second shielding region 9312, where M is a natural number greater than 1, the second shielding region 9312 is located between two adjacent first openings 9311, and the first openings 9311 are used for evaporating the first cathode 22.
In this embodiment, because the first evaporation plating zone on the mask includes M first openings and the second shielding zone, and the second shielding zone is located between two adjacent first openings, the first cathode in the first display zone can be evaporated by using the mask, and a gap exists between two adjacent first cathodes, so that an area not covered by the first cathode exists in the first display zone, and the light transmittance of the first display zone is improved.
The mask provided by the embodiment of the invention is briefly introduced above, and the mask provided by the embodiment of the invention is described in detail below.
The embodiment of the invention also provides a mask. As shown in fig. 9, the reticle 91 includes: the first shielding region 92 and the evaporation units 93 arranged along the first direction F1, the first shielding region 92 surrounds the evaporation units 93.
In one embodiment, the material of the first shielding region 92 is metal, and is used for shielding the evaporation material during evaporation.
As shown in fig. 10, each evaporation unit 93 includes a first evaporation region 931 and a second evaporation region 932. One evaporation unit 93 is used to evaporate a cathode of one display panel.
As shown in fig. 11, the first evaporation region 931 includes M first openings 9311 and a second shielding region 9312, where M is a natural number greater than 1, the second shielding region 9312 is located between two adjacent first openings 9311, and the first openings 9311 are used for evaporating the first cathode 22.
As shown in fig. 10, the second evaporation region 932 includes only one second opening (not shown), and the entire second evaporation region 932 is one second opening. A portion of the M first openings 9311 may communicate with second openings for evaporation of the second cathode.
In this embodiment, the opening area of the first evaporation region 931 is the total area of the M first openings 9311, and the opening area of the second evaporation region 932 is larger than the opening area of the first evaporation region 931.
In this embodiment, because the first evaporation plating zone on the mask includes M first openings and the second shielding zone, and the second shielding zone is located between two adjacent first openings, the first cathode in the first display zone can be evaporated by using the mask, and a gap exists between two adjacent first cathodes, so that an area not covered by the first cathode exists in the first display zone, and the light transmittance of the first display zone is improved.
In the present embodiment, as shown in fig. 11, the first opening 9311 is a quadrilateral shape as a whole, for example, a right-angled rectangle, and is used for vapor deposition of the first cathode 22 shown in fig. 2, and the screen and the manufacturing pressure are small. The four sides of the first opening 9311 may be all straight lines, and some of the four sides may be curved. Of course, the first opening 9311 can also be octagonal as shown in fig. 3 for evaporation of the first cathode 22 as shown in fig. 3. The first opening 9311 may also be fourteen-sided as shown in fig. 4, a rounded rectangle as shown in fig. 5, a rounded dodecagon as shown in fig. 6, but is not limited thereto. In short, the first opening 9311 is an N-sided polygon, where N is a natural number greater than or equal to 4; the area of the first opening 9311 is inversely related to N, i.e., the larger N, the smaller the area of the first opening 9311.
In the present embodiment, as shown in fig. 10, the second evaporation region 932 may surround the first evaporation region 931 from three sides. As shown in fig. 11, the first evaporation region 931 is rectangular as a whole. The boundary between the first evaporation region 931 and the second evaporation region 932 may be a straight line or a curved line. Of course, the second evaporation region 932 may surround the first evaporation region 931 from both sides.
In another embodiment, as shown in fig. 12 and 13, the first evaporation region 931 is trapezoidal, the first evaporation region 931 includes a fourth side 933 and a fifth side 934, the fourth side 933 is parallel to the fifth side 934, and a side length of the fourth side 933 is greater than a side length of the fifth side 934. The second evaporation area 932 includes a sixth side 935, a fourth side 933 flush with the sixth side 935 and adjacent to the first shielding area 92, and a fifth side 934 adjacent to the second evaporation area 932. In this embodiment, the fourth side 933 and the fifth side 934 are straight lines. Since the fourth side 933 of the first evaporation region 931 is longer, the connecting portion between the first evaporation region 931 and the first shielding region 92 is more, which can provide a greater supporting effect for the first evaporation region 931 and reduce the drooping amount of the first evaporation region 931.
In another embodiment, as shown in fig. 14, the fifth side 934 of the first evaporation region 931 is a curve, the fifth side 934 is entirely parallel to the fourth side 933, and the length of the projection of the fifth side 934 on the fourth 933 is smaller than the length of the fourth 933.
In another embodiment, as shown in fig. 15, the first evaporation region 931 is arranged in parallel with the second evaporation region 932. In this embodiment, only one side of the first evaporation region 931 is adjacent to the second evaporation region 932, and the side length of the side of the first evaporation region 931 adjacent to the second evaporation region 932 is the same as the side length of the side of the second evaporation region 932 adjacent to the first evaporation region 931, so that the risk that the first evaporation region 931 is wrinkled due to magnetic attraction can be reduced.
In another embodiment, as shown in fig. 16, the mask 91 includes two rows of evaporation units 93 arranged along the first direction F1 in the second direction F2. Of course, the mask plate 91 may include three or more rows of evaporation units 93 arranged along the first direction F1 in the second direction F2. Thus, the first shielding region 92 between the vapor deposition units 93 can be increased, and the transmission of the stretching force can be increased, thereby reducing the sagging amount of the mask plate 91.
The embodiment of the invention also provides a mask plate assembly. As shown in fig. 17 to 18, the mask assembly includes: a metal frame 171, a first mask 172 and a second mask 173.
In the present embodiment, the first mask 172 is disposed on the metal frame 171 and can be fixed on the metal frame 171, for example, but not limited thereto, the first mask 172 can be welded on the metal frame 171.
In this embodiment, the first mask 172 includes a third shielding region 1721 and a third opening 1722, and the third shielding region 1721 surrounds the third opening 1722.
In this embodiment, the second reticle 173 is located on the first reticle 172, and the second reticle 172 is the reticle 91. The second mask 173 may be fixed on the metal frame 171, for example, but not limited thereto, the second mask 173 may be welded on the metal frame 171.
In this embodiment, the projection of the evaporation unit 93 on the first mask 172 is located in the third opening 1722, and the projection of the first shielding region 92 on the first mask 172 is located in the third shielding region 1721. Thus, the third shielding region 1721 of the first reticle 172 can provide a supporting function for the second reticle 173.
In the present embodiment, the reticle assembly includes a plurality of second reticles 173, and the plurality of second reticles 173 may be arranged side by side.
In one embodiment, as shown in fig. 17, the reticle assembly may further include two alignment reticles 174, and the two alignment reticles 174 are respectively located at two sides of the second reticle 173 arranged side by side. The alignment mask 174 is used to position the second masks 173, so that the second masks 173 are aligned, the projection of the evaporation unit 93 on the first mask 172 is located in the third opening 1722, and the projection of the first shielding region 92 on the first mask 172 is located in the third shielding region 1721.
The embodiment of the invention also provides a preparation method of the display panel. The preparation method of the display panel comprises the following steps: and evaporating the cathode of the display panel by using the mask plate assembly, wherein the cathode of the display panel comprises a first cathode 22 and a second cathode. The first evaporation region 931 is used for evaporating a plurality of first cathodes 22, and the second evaporation region 932 is used for evaporating a second cathode.
In this embodiment, since a gap exists between two adjacent first cathodes, an area not covered by the first cathode exists in the first display region, and the light transmittance of the first display region can be improved.
The display device in this embodiment may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator and the like.
The forming process adopted in the above process may include, for example: deposition, sputtering and other film forming processes and etching and other patterning processes.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (15)

1. A display panel, comprising: the display panel comprises a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area;
the first display area comprises a plurality of first sub-pixels, and the first sub-pixels are organic light-emitting sub-pixels; at least two first sub-pixels share the same first cathode; the number of the first cathodes is more than 1, and a gap exists between every two adjacent first cathodes.
2. The display panel according to claim 1, wherein the first display region includes a plurality of first pixels, the first pixels being organic light emitting pixels; the same first pixel comprises at least two first sub-pixels, and all the first sub-pixels in the same first pixel share the same first cathode.
3. The display panel according to claim 2, further comprising a substrate, the plurality of first pixels being located on the substrate;
the first sub-pixels comprise first anodes, and in the same first pixel, the projections of the first anodes of all the first sub-pixels on the substrate are positioned in the projection of the first cathodes on the substrate.
4. The display panel according to claim 1, wherein the first cathode is an N-sided polygon, N being a natural number greater than or equal to 4; the area of the first cathode is inversely related to N.
5. The display panel according to claim 1, wherein a pixel density of the first display region is smaller than a pixel density of the second display region;
the second display area comprises a plurality of second sub-pixels, and the second sub-pixels are organic light-emitting sub-pixels; all the second sub-pixels in the second display area share the same second cathode; the first cathode is electrically connected with the second cathode;
the second display area at least partially surrounds the first display area, or the first display area and the second display area are arranged in parallel.
6. The display panel according to claim 1, wherein the first display region is a trapezoid or a rectangle;
when the first display area is trapezoidal, the first display area comprises a first edge and a second edge, the first edge is parallel to the second edge, and the side length of the first edge is greater than that of the second edge;
the second display area includes a third edge, the first edge being flush with the third edge, the second edge being adjacent to the second display area.
7. A display device, characterized by a light sensing means and comprising a display panel as claimed in any one of claims 1 to 6, the projection of the light sensing means on the display panel being located in the first display area.
8. A reticle, comprising: the evaporation coating device comprises a first shielding area and evaporation coating units arranged along a first direction, wherein the first shielding area surrounds the evaporation coating units; the evaporation unit comprises a first evaporation area and a second evaporation area, and the opening area of the second evaporation area is larger than that of the first evaporation area;
the first evaporation coating area comprises M first openings and a second shielding area, M is a natural number larger than 1, the second shielding area is located between every two adjacent first openings, and the first openings are used for evaporating a first cathode.
9. The reticle of claim 8, wherein the first opening is an N-sided polygon, N being a natural number greater than or equal to 4; the area of the first opening is inversely related to N.
10. The reticle of claim 8, wherein the second evaporation zone comprises only one second opening, wherein a portion of the M first openings are in communication with the second opening, and wherein the second opening is configured to evaporate a second cathode.
11. The mask as recited in claim 8, wherein the second evaporation region at least partially surrounds the first evaporation region, or the first evaporation region and the second evaporation region are arranged in parallel.
12. The mask as claimed in claim 8, wherein the first evaporation region is trapezoidal or rectangular;
when the first evaporation area is trapezoidal, the first evaporation area comprises a fourth edge and a fifth edge, the fourth edge is parallel to the fifth edge, and the side length of the fourth edge is greater than that of the fifth edge;
the second evaporation coating zone comprises a sixth edge, the fourth edge is flush with the sixth edge and is adjacent to the first shielding zone, and the fifth edge is adjacent to the second evaporation coating zone.
13. The mask as claimed in claim 12, comprising at least two rows of evaporation units arranged along the first direction in the second direction.
14. A reticle assembly, comprising: the mask comprises a metal frame, a first mask and a second mask;
the first mask is located on the metal frame and comprises a third shielding area and a third opening, and the third shielding area surrounds the third opening;
the second mask is located on the first mask, the second mask is the mask according to any one of claims 8 to 13, the projection of the evaporation unit on the first mask is located in the third opening, and the projection of the first shielding region on the first mask is located in the third shielding region.
15. A method for manufacturing a display panel, comprising evaporating the cathode of the display panel of claim 1 using the mask assembly of claim 14, wherein the cathode of the display panel comprises the first cathode.
CN202010731758.8A 2020-07-27 2020-07-27 Display panel, manufacturing method thereof, display device, mask and mask assembly Active CN111863904B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010731758.8A CN111863904B (en) 2020-07-27 2020-07-27 Display panel, manufacturing method thereof, display device, mask and mask assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010731758.8A CN111863904B (en) 2020-07-27 2020-07-27 Display panel, manufacturing method thereof, display device, mask and mask assembly

Publications (2)

Publication Number Publication Date
CN111863904A true CN111863904A (en) 2020-10-30
CN111863904B CN111863904B (en) 2024-02-13

Family

ID=72947215

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010731758.8A Active CN111863904B (en) 2020-07-27 2020-07-27 Display panel, manufacturing method thereof, display device, mask and mask assembly

Country Status (1)

Country Link
CN (1) CN111863904B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113571664A (en) * 2021-07-22 2021-10-29 武汉天马微电子有限公司 Display panel, manufacturing method thereof and display device
WO2022116010A1 (en) * 2020-12-01 2022-06-09 京东方科技集团股份有限公司 Display panel and display apparatus
WO2023245641A1 (en) * 2022-06-24 2023-12-28 京东方科技集团股份有限公司 Display panel, display device, and mask

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108866476A (en) * 2018-06-29 2018-11-23 京东方科技集团股份有限公司 Mask plate and preparation method thereof, evaporation coating method, display screen
CN109786582A (en) * 2019-03-08 2019-05-21 京东方科技集团股份有限公司 A kind of mask plate, display backboard, display panel and display device
CN110265461A (en) * 2019-06-27 2019-09-20 武汉天马微电子有限公司 Organic light emitting display panel and preparation method thereof, display device, mask plate
CN110890477A (en) * 2019-11-29 2020-03-17 昆山国显光电有限公司 Light-transmitting display panel, manufacturing method thereof and display panel
CN110993662A (en) * 2019-12-03 2020-04-10 武汉华星光电半导体显示技术有限公司 Display panel and mask plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108866476A (en) * 2018-06-29 2018-11-23 京东方科技集团股份有限公司 Mask plate and preparation method thereof, evaporation coating method, display screen
CN109786582A (en) * 2019-03-08 2019-05-21 京东方科技集团股份有限公司 A kind of mask plate, display backboard, display panel and display device
CN110265461A (en) * 2019-06-27 2019-09-20 武汉天马微电子有限公司 Organic light emitting display panel and preparation method thereof, display device, mask plate
CN110890477A (en) * 2019-11-29 2020-03-17 昆山国显光电有限公司 Light-transmitting display panel, manufacturing method thereof and display panel
CN110993662A (en) * 2019-12-03 2020-04-10 武汉华星光电半导体显示技术有限公司 Display panel and mask plate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022116010A1 (en) * 2020-12-01 2022-06-09 京东方科技集团股份有限公司 Display panel and display apparatus
CN114846605A (en) * 2020-12-01 2022-08-02 京东方科技集团股份有限公司 Display panel and display device
CN114846605B (en) * 2020-12-01 2023-10-10 京东方科技集团股份有限公司 Display panel and display device
CN113571664A (en) * 2021-07-22 2021-10-29 武汉天马微电子有限公司 Display panel, manufacturing method thereof and display device
CN113571664B (en) * 2021-07-22 2023-11-21 武汉天马微电子有限公司 Display panel, manufacturing method thereof and display device
WO2023245641A1 (en) * 2022-06-24 2023-12-28 京东方科技集团股份有限公司 Display panel, display device, and mask

Also Published As

Publication number Publication date
CN111863904B (en) 2024-02-13

Similar Documents

Publication Publication Date Title
CN110473988B (en) Mask for display panel manufacturing process and application thereof
CN111863904B (en) Display panel, manufacturing method thereof, display device, mask and mask assembly
CN110838505B (en) Display structure and display device
JP2023171823A (en) Display substrate, driving method therefor, display apparatus, and highly accurate metal mask
US11355575B2 (en) Organic light-emitting display panel and manufacturing method thereof, and mask
WO2021139085A1 (en) Oled panel, and evaporation method and mask set thereof
CN110923625A (en) Mask module, evaporation system, evaporation method and display substrate
US20210399255A1 (en) Array substrate, display panel and display apparat
CN112002746B (en) Display panel and display device
US20220190073A1 (en) Display panel and display apparatus
CN111129098A (en) Organic light-emitting display panel and device
US11335748B2 (en) Transparent OLED substrate, display panel and OLED substrate
US20220115455A1 (en) Display panel and terminal device
CN110098232A (en) OLED display panel
JP2023159097A (en) Mask assembly and display device
US20230180581A1 (en) Display substrate, fabrication method therefor, and display apparatus
CN110767683A (en) Display panel, mask and display terminal
US20220392969A1 (en) Display panel and method for manufacturing the same, and display apparatus
CN113675249A (en) Display panel and display device
JP2024501107A (en) terminal device
JP2011181208A (en) Large-sized metal mask
US8013524B2 (en) Organic EL display
CN114761605B (en) Mask plate and preparation method thereof, display panel and preparation method thereof, and display device
CN215644498U (en) Display panel, mask assembly and display device
US20220173320A1 (en) Mask and method for preparing same, and method for preparing display panel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant