CN114122287B - Display panel, manufacturing method of display panel and display device - Google Patents
Display panel, manufacturing method of display panel and display device Download PDFInfo
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- CN114122287B CN114122287B CN202111305959.2A CN202111305959A CN114122287B CN 114122287 B CN114122287 B CN 114122287B CN 202111305959 A CN202111305959 A CN 202111305959A CN 114122287 B CN114122287 B CN 114122287B
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- 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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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- H—ELECTRICITY
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- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The application provides a display panel, a manufacturing method of the display panel and a display device, wherein the display panel comprises a first display area, one side of the display panel corresponding to the first display area is provided with an optical element, and the display panel comprises: a substrate; the pixel definition layer is arranged on the substrate and comprises a plurality of first pixel definition openings which are arranged at intervals and positioned in the first display area; a light emitting function layer including first light emitting units disposed in the first pixel defining openings; a barrier layer including a barrier unit disposed in the at least one first pixel defining opening; the blocking unit and the first light-emitting unit are both located at the bottom of the first pixel definition opening and are arranged adjacently, and the light transmittance of the blocking unit is higher than that of the first light-emitting unit. The blocking unit with higher light transmittance is arranged in the partial area of the first pixel definition opening, so that the light transmittance of the first display area can be effectively increased, and the requirements of display and light transmittance of the display panel in the first display area are met.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a display device.
Background
An Organic Light Emitting Diode (OLED) display panel has many advantages, such as low driving voltage, high Light Emitting efficiency, short response time, high definition and contrast, a viewing angle of approximately 180 °, a wide temperature range, and capability of implementing flexible display and large-area full color display, and is considered as a display panel with the most potential for development in the industry.
With the development of science and technology and the improvement of product requirements of people, a comprehensive screen with a higher screen ratio becomes a development trend which is expected by a smart phone. For satisfying the demand of the compatible screen of panel technique device (such as optical element such as camera) under the screen, need will place in the below of panel like optical element such as camera, the panel region that these screen devices under correspond is called screen device district to the screen device district satisfies simultaneously and shows and non-light tight demand. However, the light emitting function layer covering each pixel definition opening in the existing under-screen device area has a problem of poor light transmittance, so that the under-screen device area cannot meet the requirement of high light transmittance, and the problem needs to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a display panel, a manufacturing method of the display panel and a display device, which can meet the display and light transmission requirements of a device area under a screen.
The application provides a display panel, display panel includes first display area, corresponds first display area one side of display panel is provided with optical element, display panel includes:
a substrate;
the pixel definition layer is arranged on the substrate and comprises a plurality of first pixel definition openings which are arranged at intervals and positioned in the first display area;
a light emitting function layer including first light emitting cells disposed in the first pixel defining openings;
a barrier layer including a barrier unit disposed in at least one of the first pixel defining openings;
the blocking unit and the first light-emitting unit are both positioned at the bottom of the first pixel definition opening, the blocking unit and the first light-emitting unit are arranged adjacently, and the light transmittance of the blocking unit is higher than that of the first light-emitting unit.
Optionally, a perpendicular projection of the blocking unit on the substrate does not overlap a perpendicular projection of the first light-emitting unit on the substrate.
Optionally, the display panel further includes a second display area, the second display area is disposed around the first display area, wherein the pixel definition layer further includes a plurality of second pixel definition openings disposed at intervals in the second display area, the light-emitting functional layer further includes a second light-emitting unit disposed in the second pixel definition openings, and a thickness of the first light-emitting unit is smaller than a thickness of the second light-emitting unit.
Optionally, the first light-emitting unit includes a first red light unit, a first green light unit, and a first blue light unit, where the blocking unit is disposed in the first pixel defining opening corresponding to at least one of the first red light unit, the first green light unit, and the first blue light unit.
Optionally, the blocking unit is disposed in each of the first pixel defining openings.
Optionally, the material of the barrier layer is an insulating material.
Optionally, the material of the barrier layer comprises an azo-phenyl polymer.
Correspondingly, the embodiment of the application also provides a manufacturing method of the display panel, which comprises the following steps:
providing a substrate;
manufacturing a patterned pixel definition layer above the substrate, wherein the pixel definition layer comprises a plurality of first pixel definition openings positioned in a first display area of the display panel, and the plurality of first pixel definition openings are arranged at intervals;
manufacturing a patterned blocking layer on the pixel defining layer, wherein the blocking layer comprises a blocking unit arranged in at least one first pixel defining opening;
applying a light condition with a preset wavelength to the blocking unit to enable the blocking unit to deform;
manufacturing a patterned light-emitting functional layer on the barrier layer, wherein the light-emitting functional layer comprises first light-emitting units arranged in the first pixel definition openings;
removing the light condition of the predetermined wavelength applied to the barrier unit to restore the barrier unit;
the display panel comprises a first pixel defining opening, a first display area, a blocking unit, a first light emitting unit and a second pixel defining opening, wherein an optical element is arranged on one side of the display panel corresponding to the first display area, the blocking unit and the first light emitting unit are both positioned at the bottom of the first pixel defining opening, the blocking unit and the first light emitting unit are arranged adjacent to each other, and the light transmittance of the blocking unit is higher than that of the first light emitting unit.
Optionally, the thickness of the deformed blocking unit is 2 to 3 times that of the first light emitting unit, and the thickness of the deformed blocking unit is 1 to 1.5 times that of the pixel defining layer.
Optionally, the thickness of the recovered blocking unit is equal to the thickness of the first light emitting unit.
Optionally, the blocking unit has a length direction and a thickness direction perpendicular to the length direction, and the blocking unit is made of a telescopic material, and is configured to extend in the thickness direction under the illumination condition with the predetermined wavelength, and retract in the thickness direction after the illumination condition with the predetermined wavelength is removed.
Correspondingly, an embodiment of the present application further provides a display device, which includes an optical element and the display panel described in any one of the above descriptions, where the optical element is disposed on one side of the display panel and corresponds to the first display area of the display panel.
This application is through at least one the subregion in the first pixel definition opening sets up the higher separation unit of luminousness, can effectively increase the luminousness of first display area satisfies simultaneously display panel is in the demonstration and the non-light tight demand of first display area.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a top view of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a first display area structure of a display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a second display area structure of a display panel according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a display panel provided in the second embodiment of the present application, where an anode layer and a pixel definition layer are formed in a first display area;
fig. 5 is a schematic structural diagram illustrating a barrier layer formed in a first display region of a display panel according to a second embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a display panel according to a second embodiment of the present disclosure after deformation of a barrier layer;
fig. 7 is a structural diagram of a display panel according to a second embodiment of the present disclosure, in which a light emitting functional layer is formed on a barrier layer after a first display area is deformed;
fig. 8 is a structural diagram of a display panel according to a second embodiment of the present disclosure after a barrier layer is restored;
fig. 9 is a schematic structural diagram of a display panel provided in the second embodiment of the present application, in which a cathode layer is formed in a first display area;
fig. 10 is a schematic structural diagram of a display panel provided in the second embodiment of the present application, in which an encapsulation layer is formed in a first display area.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials. The following are detailed below, and it should be noted that the order of description of the following examples is not intended to limit the preferred order of the examples.
In the prior art, an OLED display panel in an under-screen device area needs to realize a display function, and therefore inevitably needs to be provided with a light-emitting functional layer for display in the area, but the light transmittance of the light-emitting functional layer is low, and the OLED display panel includes a plurality of stacked film layers.
Example one
The embodiment of the application provides a display panel, display panel is through at least one the subregion in the first pixel definition opening sets up the higher separation unit of luminousness, can effectively increase the luminousness in device district under the screen satisfies simultaneously display panel is in the demonstration and the printing opacity demand in device district under the screen.
Specifically, fig. 1 is a top view of a display panel provided in a first embodiment of the present disclosure, and as shown in fig. 1, the first embodiment of the present disclosure discloses a display panel 100, where the display panel 100 includes a first display area 101 and a second display area 102, where the first display area 101 is an off-screen device area, and an optical element (not shown in the figure) is disposed on a side of the display panel 100 corresponding to the first display area 101, where the optical element is a camera or other photosensitive element; the second display area 102 is disposed around the first display area 101; the display panel 100 further includes, for example, a non-display area (not shown), which is a frame area of the display panel 100, and the non-display area is disposed around the second display area 102.
In this embodiment, the display panel 100 of the first display area 101 has a display state or a light-transmitting state; the display panel 100 of the second display area 102 has a display state. When the display panel 100 of the first display area 101 is in a display state and the display panel 100 of the second display area 102 is in a display state, the display panel 100 can realize full-screen display; when the display panel 100 of the first display area 101 is in a transparent state and the display panel 100 of the second display area 102 is in a display state, ambient light can penetrate through the display panel 100 of the first display area 101 and enter the optical element located on the side of the display panel 100 corresponding to the first display area 101, so that the optical element performs a light sensing function, and at the same time, the second display area 102 can still perform a display function normally. Preferably, the optical element is a camera, and when the display panel 100 of the first display area 101 is in a display state, the camera is turned off; when the display panel 100 of the first display area 101 is in a transparent state, the camera is turned on to receive the external ambient light passing through the display panel 100.
Fig. 2 is a schematic diagram of a first display area structure of a display panel provided in a first embodiment of the present application, fig. 3 is a schematic diagram of a second display area structure of a display panel provided in the first embodiment of the present application, and in combination with fig. 1 to fig. 3, a display panel 100 provided in the first embodiment of the present application includes: a substrate 10, an anode layer 20, a pixel defining layer 30, a light emitting functional layer 50, a barrier layer 40, and a cathode layer 60.
In this embodiment, the substrate 10 includes, for example, a substrate base and a driving circuit layer disposed on the substrate base. The substrate base plate can be a flexible base plate or a rigid base plate, and the material of the substrate base plate comprises one or more of glass, plastics, silicon dioxide, polyethylene, polypropylene, polystyrene, polylactic acid, polyethylene terephthalate, polyimide or polyurethane; a pixel driving circuit for driving the light emitting function layer 50 to emit light is formed in the driving circuit layer, and the pixel driving circuit includes a plurality of Thin Film Transistors (TFTs), which may be of an amorphous silicon TFT, a low temperature polysilicon TFT, an oxide semiconductor TFT, or an organic TFT.
In this embodiment, the anode layer 20 is stacked on the substrate 10, and is formed on the entire surface of the substrate 10. However, the arrangement of the anode layer 20 is not limited in the present application, and in other embodiments of the present application, the anode layer may also adopt a patterned arrangement, for example, the patterned anode layer includes a plurality of anode units (not shown in the drawings) arranged at intervals.
In this embodiment, the pixel defining layer 30 is disposed on the substrate 10. Specifically, the pixel defining layer 30 is stacked on the anode layer 20 and includes a plurality of pixel defining openings arranged at intervals, light emitting units are disposed in each pixel defining opening, and the pixel defining layer 30 can arrange the light emitting units in each pixel defining opening at intervals to avoid light mixing. The pixel defining layer 30 includes a plurality of first pixel defining openings 301 spaced apart from each other in the first display region 101, corresponding to the first display region 101; in correspondence with the second display region 102, the pixel defining layer 30 further includes a plurality of second pixel defining openings 302 disposed at intervals in the second display region 102.
In this embodiment, the light emitting function layer 50 is disposed on the substrate 10. Specifically, the light-emitting functional layer 50 includes a plurality of light-emitting units, and the light-emitting units are correspondingly disposed in the pixel-defining openings, and implement the display function of the display panel 100 by the light-emitting units emitting light. Corresponding to the first display region 101, the light emitting unit includes a first light emitting unit 501 disposed in each of the first pixel defining openings 301; corresponding to the second display region 102, the light emitting unit further includes a second light emitting unit 502 disposed in each of the second pixel defining openings 302.
In this embodiment, the barrier layer 40 is disposed on the substrate 10. Specifically, the blocking layer 40 includes a blocking unit 401 disposed in at least one of the first pixel defining openings 301, the blocking unit 401 and the first light emitting unit 501 are both located at the bottom of the first pixel defining opening 301, the blocking unit 401 and the first light emitting unit 501 are disposed adjacent to each other, and the light transmittance of the blocking unit 401 is higher than that of the first light emitting unit 501. Preferably, a perpendicular projection of the blocking unit 401 on the substrate 10 does not overlap a perpendicular projection of the first light emitting unit 501 on the substrate 10. Since both the first light-emitting unit 501 and the blocking unit 401 with higher transmittance are disposed in at least one of the first pixel defining openings 301, when at least a portion of external environment light is emitted from one side of the display panel 100 to the optical element on the other side of the display panel 100, the external environment light can be emitted to the optical element through the blocking unit 401 with higher transmittance while avoiding the first light-emitting unit 501 with lower transmittance, so as to effectively improve the transmittance of the first display area 101, increase the light collection amount of the optical element, and effectively enhance the light sensing function of the optical element. Moreover, since the first light-emitting unit 501 is further disposed in each of the first pixel defining openings 301, when the display panel 100 needs to perform a full-screen display, the display panel 100 in the first display area 101 can still emit light normally, and a high display quality is maintained.
In this embodiment, the cathode layer 60 is disposed on the light emitting function layer 50 and the barrier layer 40. Specifically, the cathode layer 60 is formed in a patterned manner in the first display area 101 and the second display area 102 of the display panel 100. The cathode layer 60 does not cover the pixel defining layer 30, and the cathode layer 60 includes a first cathode unit 601 corresponding to each of the first pixel defining openings 301, corresponding to the first display region 101; in correspondence with the second display region 102, the cathode layer 60 further includes a second cathode unit 602 disposed in correspondence with each of the second pixel defining openings. Preferably, the first cathode unit 601 is located in the first pixel defining opening 301, and the second cathode unit 602 is located in the second pixel defining opening 302. Since the cathode layer 60 in the first display region 101 is only disposed in the first pixel defining opening 301, when ambient light passes through the pixel defining layer 30 in the first display region 101, the ambient light does not need to pass through the filtering effect of the cathode layer 60, so as to further improve the light transmittance of the first display region 101, increase the light collection amount of the optical element, and further enhance the light sensing function of the optical element. Further, in other embodiments of the present application, the first cathode unit located in the first pixel defining opening may only cover the first light emitting unit, and a vertical projection of the first cathode unit on the substrate does not overlap a vertical projection of the blocking unit on the substrate, that is, the cathode layer is not disposed on the blocking unit in the first pixel defining opening, so as to further improve the light transmittance of the first display area 101. Of course, the cathode layer is not limited to be disposed in the present application, and the entire surface of the cathode layer may be disposed on the pixel defining layer and covers the light emitting function layer, the blocking layer, and the pixel defining layer.
In this embodiment, the light-emitting functional layer 50 located in the first display region 101 is only disposed in the first pixel defining opening 301, and a vertical projection of the light-emitting functional layer 50 on the substrate 10 does not overlap with a vertical projection of the pixel defining layer 30 on the substrate 10, that is, the light-emitting functional layer 50 is not covered on the pixel defining layer 30 located in the first display region 101, so that when ambient light passes through the pixel defining layer 30 located in the first display region 101, the ambient light does not need to pass through a filtering effect of the light-emitting functional layer 50, the light transmittance of the first display region 101 is further improved, the light collection amount of the optical element is increased, and the photosensitive function of the optical element is further enhanced.
In this embodiment, the light-emitting function layer 50 located in the second display region 102 is only disposed in the second pixel defining opening 302, but the present application does not limit the film formation region of the light-emitting function layer 50 in the second display region 102, and in other embodiments of the present application, the light-emitting function layer 50 in the second display region 102 may cover the pixel defining layer 30.
In this embodiment, the blocking unit 401 is configured to deform under the illumination condition with the predetermined wavelength, and recover after the illumination condition with the predetermined wavelength is removed. The material forming the barrier unit 401 is, for example, an insulating material, and the non-conductive property of the barrier unit 401 enables the anode layer 20 and the cathode layer 60 not to be conducted through the barrier unit 401.
In this embodiment, the material forming the blocking unit 401 includes an azophenyl polymer, and the azophenyl polymer can be deformed under the illumination condition with the predetermined wavelength and recover after the illumination condition with the predetermined wavelength is removed. Specifically, the azophenyl polymer has the following characteristics: the form of trans-form may be changed to the form of cis-form under irradiation with light of a specific wavelength range, and the volume may expand, or the form of cis-form may be changed to the form of trans-form again under irradiation with light of a specific wavelength range, and the volume may be restored. In addition, the transmittance of the azo-phenyl polymer in the visible light band is greater than 90%, and the transmittance of the light-emitting functional layer 50 in the visible light band is generally less than 50%, so that the barrier unit 40 has high transmittance.
In this embodiment, the thickness of the first light emitting unit 501 is smaller than that of the second light emitting unit 502, so that light loss of external environment light when passing through the first light emitting unit 501 in the first display area 101 can be further reduced, light transmittance of the first display area 101 is further improved, a light collection amount of the optical element is increased, and a photosensitive function of the optical element is further enhanced. It should be noted that, since the light-emitting function layer 50 is generally made of an organic material, when the organic material is formed in the first pixel-defining opening 301, the blocking unit 401 can change from an initial state to a deformed state, and the dynamic change of the blocking unit 401 can prevent a part of the organic material from being formed in the first pixel-defining opening 301, so that the thickness of the first light-emitting unit 501 in the first pixel-defining opening 301 of the first display region 101 can be reduced.
In this embodiment, the first light emitting unit 501 includes a first red light unit, a first green light unit, and a first blue light unit, where the blocking unit 401 is disposed in the first pixel defining opening 301 corresponding to at least one of the first red light unit, the first green light unit, and the first blue light unit.
Preferably, the first light emitting unit 501 and the blocking unit 401 are disposed in each of the first pixel defining openings 301, so that light transmittance of the first display region 101 is maximized.
In this embodiment, the display panel 100 further includes, for example, an encapsulation layer 70, and the entire surface of the encapsulation layer 70 is disposed on, for example, the cathode layer 60 and the pixel definition layer 30. Specifically, the encapsulation layer 70 structure may be configured as a three-layer structure, that is, including a first inorganic layer, a second organic layer and a third inorganic layer. Of course, a multilayer laminated structure may be provided. The inorganic layer in the encapsulation layer 70 may be silicon nitride, silicon oxynitride, silicon oxide, or aluminum oxide material; the organic layer in the encapsulation layer 70 may be made of organic compound materials such as acrylic, epoxy, and silicon. It is easy to understand that, since the light emitting functional layer 50 is sensitive to external environments such as moisture and oxygen, if the light emitting functional layer 50 in the display panel 100 is exposed to the moisture or oxygen, the performance of the display panel 100 may be drastically reduced or completely damaged. The encapsulation layer 70 can block air and moisture for the light emitting units in the light emitting function layer 50, thereby ensuring reliability of the display panel 100.
Example two
An embodiment of the present application discloses a manufacturing method of a display panel, which can be applied to the display panel 100 in the embodiment one, and the manufacturing method of the display panel includes the following steps:
providing a substrate;
manufacturing a patterned pixel definition layer above the substrate, wherein the pixel definition layer comprises a plurality of first pixel definition openings positioned in a first display area of the display panel, and the plurality of first pixel definition openings are arranged at intervals;
manufacturing a patterned blocking layer on the pixel defining layer, wherein the blocking layer comprises a blocking unit arranged in at least one first pixel defining opening;
applying a light condition with a preset wavelength to the blocking unit to enable the blocking unit to deform;
manufacturing a patterned light-emitting functional layer on the blocking layer, wherein the light-emitting functional layer comprises first light-emitting units arranged in the first pixel definition openings;
removing the light condition of the predetermined wavelength applied to the barrier unit to restore the barrier unit;
the display panel is provided with a first display area, a second display area and a first pixel definition opening, wherein one side of the display panel corresponding to the first display area is provided with an optical element, the blocking unit and the first light-emitting unit are both positioned at the bottom of the first pixel definition opening, the blocking unit and the first light-emitting unit are arranged adjacently, and the light transmittance of the blocking unit is higher than that of the first light-emitting unit. Further, a perpendicular projection of the blocking unit on the substrate does not overlap a perpendicular projection of the first light-emitting unit on the substrate.
Specifically, fig. 4 is a schematic structural diagram of a display panel provided in the second embodiment of the present disclosure, in which an anode layer and a pixel definition layer are manufactured in a first display area, as shown in fig. 4, a substrate 10 is provided, and an anode layer 20 and a patterned pixel definition layer 30 are formed on the entire surface of the substrate 10, where the pixel definition layer 30 includes a plurality of first pixel definition openings 301 located in a first display area 101 of the display panel 100, and the plurality of first pixel definition openings 301 are arranged at intervals.
Fig. 5 is a schematic structural diagram of a display panel according to the second embodiment of the present disclosure, in which a barrier layer is formed in a first display region, as shown in fig. 5, a patterned barrier layer 40 is formed on the pixel defining layer 30, the barrier layer 40 includes a barrier unit 401 disposed in at least one first pixel defining opening 301, and the barrier layer 40 may be formed by chemical vapor deposition film formation, evaporation or transfer. The blocking unit 401 is located at the bottom of the first pixel defining opening.
Fig. 6 is a schematic structural diagram of a deformed barrier layer of a display panel provided in the second embodiment of the present application, and as shown in fig. 6, a light condition with a predetermined wavelength is applied to the barrier unit 401, so that the barrier unit 401 is deformed. The predetermined wavelength of light is, for example, the predetermined wavelength of 254nm to 365nm, and the light condition is, for example, the application of ultraviolet light to the barrier unit 401.
Fig. 7 is a structural diagram of a display panel provided in the second embodiment of the present application for manufacturing a light-emitting functional layer on a barrier layer after a first display area is deformed, as shown in fig. 7, a patterned light-emitting functional layer 50 is manufactured on the barrier layer 40 in the deformed state, the light-emitting functional layer 50 includes first light-emitting units 501 disposed in first pixel definition openings 301, the first light-emitting units 501 are located at bottoms of the first pixel definition openings 301, and the first light-emitting units 501 are disposed adjacent to the barrier units 401.
Fig. 8 is a structural diagram of a display panel according to the second embodiment of the present invention after the barrier layer is restored, and as shown in fig. 8, the light condition of the predetermined wavelength applied to the barrier unit 401 is removed to restore the barrier unit 401. Specifically, after the predetermined wavelength of light is removed, a visible light wavelength of light in the green wavelength band of 520nm to 560nm is applied to the blocking unit 401 to recover the light.
Fig. 9 is a schematic structural diagram of a display panel provided in the second embodiment of the present invention, in which a cathode layer is formed in a first display area, as shown in fig. 9, a patterned cathode layer 60 is formed on the substrate 10, and the cathode layer 60 covers the first light emitting unit 501 and the blocking unit 401.
Fig. 10 is a schematic structural diagram of a display panel provided in the second embodiment of the present application, where an encapsulation layer 70 is formed in a first display area, and as shown in fig. 10, the entire encapsulation layer 70 is formed on the substrate 10, and the encapsulation layer 70 covers the first light emitting unit 501, the blocking unit 401, and the pixel defining layer 30 of the first display area 101.
By adopting the manufacturing method of the display panel disclosed by the second embodiment of the present application, the display panel 100 in the first embodiment of the present application can be manufactured, and the blocking unit 401 with higher light transmittance is arranged in the partial area of the display panel 100 in at least one of the first pixel definition openings 301, so that the light transmittance of the first display area 101 can be effectively increased, and the requirements of the display panel 100 on the display and light transmittance of the first display area 101 are met.
As a further explanation, in the present embodiment, the blocking unit 401 of the blocking layer 40 is configured to deform under the illumination condition with a predetermined wavelength and recover after the illumination condition with the predetermined wavelength is removed.
In this embodiment, the material forming the blocking unit 401 includes an azophenyl polymer, and the azophenyl polymer can be deformed under the illumination condition with the predetermined wavelength and recover after the illumination condition with the predetermined wavelength is removed. Specifically, the azophenyl polymer has the following characteristics: the form of trans-form may be changed to the form of cis-form under irradiation with light of a specific wavelength range, and the volume may expand, or the form of cis-form may be changed to the form of trans-form again under irradiation with light of a specific wavelength range, and the volume may be restored. In addition, the transmittance of the azo-phenyl polymer in the visible light band is greater than 90%, and the transmittance of the light-emitting functional layer 50 in the visible light band is generally less than 50%, so that the barrier unit 40 has high transmittance.
In this embodiment, the illumination condition with the predetermined wavelength is, for example, applying ultraviolet illumination to the barrier unit 401, and the predetermined wavelength is 254nm to 365nm; the light condition for removing the predetermined wavelength is, for example, removing the ultraviolet light applied to the blocking unit 401, and after the light condition for removing the predetermined wavelength is removed, applying a light condition of a visible light wavelength to the blocking unit 401 to recover the visible light wavelength, where the visible light wavelength is a green light band of 520nm to 560 nm.
In this embodiment, the blocking unit 401 has a length direction and a thickness direction perpendicular to the length direction, the blocking unit 401 is made of a stretchable material, and is configured to stretch in the thickness direction under the illumination condition with the predetermined wavelength, and retract in the thickness direction after the illumination condition with the predetermined wavelength is removed, specifically, after the illumination condition with the predetermined wavelength is removed, an illumination condition with a visible light wavelength is applied to the blocking unit 401 to retract the blocking unit, and the visible light wavelength is a green light band of 520nm to 560 nm.
In this embodiment, the thickness of the deformed blocking unit 401 is 2 to 3 times that of the first light emitting unit 501, and the thickness of the deformed blocking unit 401 is 1 to 1.5 times that of the pixel defining layer 30. Since the thickness of the deformed blocking unit 401 is 2-3 times the thickness of the first light emitting unit 501, the height of the deformed blocking unit 401 protruding out of the anode layer 20 is relatively high, and the step distance is relatively large, so that the continuous film formation of the light emitting function layer 50 in the first pixel defining opening 301 can be blocked in the film formation process of the light emitting function layer 50, and a high light transmittance structure in which a part of the blocking unit 401 is arranged in at least one first pixel defining opening 301 and a part of the first light emitting unit 501 is arranged in a part of the area is formed in the at least one first pixel defining opening 301.
In this embodiment, the thickness of the recovered barrier unit 401 is equal to the thickness of the first light emitting unit 501. For example, the first cathode unit 601 in the cathode layer 60 covers the barrier unit 401 and the first light emitting unit 501 simultaneously, and since the thickness of the restored barrier unit 401 is equal to that of the first light emitting unit 501, the surface of the first cathode unit 601 formed on the first light emitting unit 501 and the barrier unit 401 is flat, and the display effect of the display panel 100 in the first display area 101 is improved. Preferably, the thickness of the recovered barrier unit 401 is less than or equal to 3 μm.
EXAMPLE III
The third embodiment of the present application discloses a display device, which includes an optical element and a display panel as in the first embodiment, wherein the optical element is disposed on one side of the display panel and corresponds to the first display area of the display panel. It should be noted that, separation unit in this application will no longer take place deformation after accomplishing display panel's preparation, and the reason lies in, still range upon range of on the luminous functional layer among the display panel is provided with multiple rete, though have certain even ultraviolet light in the external environment light, nevertheless basically can not be right separation unit produces the influence, in addition, furtherly, display device still includes the ultraviolet light barrier layer for example, the ultraviolet light barrier layer can set up in luminous functional layer's in the display panel light-emitting side or display panel keeps away from one side of optical element to the ultraviolet light in the better separation external environment light.
The display device provided by the embodiment of the present invention is described in detail above, and the principle and the embodiment of the present invention are explained by applying specific examples herein, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as limiting the present invention.
Claims (9)
1. A display panel, wherein the display panel includes a first display region, and an optical element is disposed on a side of the display panel corresponding to the first display region, the display panel comprising:
a substrate;
the pixel definition layer is arranged on the substrate and comprises a plurality of first pixel definition openings which are arranged at intervals and positioned in the first display area;
a light emitting function layer including first light emitting units disposed in the first pixel defining openings;
a barrier layer including a barrier unit disposed in at least one of the first pixel defining openings;
the blocking unit and the first light-emitting unit are both positioned at the bottom of the first pixel definition opening, the blocking unit and the first light-emitting unit are arranged adjacently, and the light transmittance of the blocking unit is higher than that of the first light-emitting unit;
the blocking unit is made of a telescopic material and is used for extending along the thickness direction under the illumination condition of a preset wavelength and retracting along the thickness direction after the illumination condition of the preset wavelength is removed.
2. The display panel according to claim 1, wherein a perpendicular projection of the barrier unit on the substrate does not overlap a perpendicular projection of the first light-emitting unit on the substrate.
3. The display panel according to claim 2, wherein the display panel further comprises a second display region disposed around the first display region, wherein the pixel defining layer further comprises a plurality of second pixel defining openings disposed at intervals in the second display region, and wherein the light emitting function layer further comprises a second light emitting unit disposed in the second pixel defining openings, and wherein the thickness of the first light emitting unit is smaller than the thickness of the second light emitting unit.
4. The display panel of claim 2, wherein the first light emitting unit comprises a first red light unit, a first green light unit and a first blue light unit, and wherein the blocking unit is disposed in the first pixel defining opening corresponding to at least one of the first red light unit, the first green light unit and the first blue light unit.
5. The display panel according to claim 2, wherein the barrier unit is disposed in each of the first pixel defining openings.
6. A manufacturing method of a display panel is characterized by comprising the following steps:
providing a substrate;
manufacturing a patterned pixel definition layer above the substrate, wherein the pixel definition layer comprises a plurality of first pixel definition openings located in a first display area of the display panel, and the plurality of first pixel definition openings are arranged at intervals;
manufacturing a patterned blocking layer on the pixel defining layer, wherein the blocking layer comprises a blocking unit arranged in at least one first pixel defining opening;
applying a light condition with a preset wavelength to the blocking unit to enable the blocking unit to deform;
manufacturing a patterned light-emitting functional layer on the pixel defining layer, wherein the light-emitting functional layer comprises first light-emitting units arranged in the first pixel defining openings;
removing the light condition of the predetermined wavelength applied to the barrier unit to restore the barrier unit;
an optical element is arranged on one side of the display panel corresponding to the first display area, the blocking unit and the first light-emitting unit are both positioned at the bottom of the first pixel definition opening, the blocking unit and the first light-emitting unit are arranged adjacently, and the light transmittance of the blocking unit is higher than that of the first light-emitting unit;
the blocking unit is made of a telescopic material, extends along the thickness direction under the illumination condition of the preset wavelength in a deformation mode, retracts along the thickness direction after the illumination condition of the preset wavelength is removed in a recovery mode, and the first light-emitting unit and the deformed blocking unit are not overlapped in the thickness direction.
7. The method of claim 6, wherein the thickness of the deformed blocking unit is 2-3 times the thickness of the first light emitting unit, and the thickness of the deformed blocking unit is 1-1.5 times the thickness of the pixel defining layer.
8. The method of manufacturing a display panel according to claim 6, wherein the restored barrier unit has a thickness equal to that of the first light emitting unit.
9. A display device comprising the display panel according to any one of claims 1 to 5 and an optical element provided on one side of the display panel and corresponding to a first display region of the display panel.
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| CN112582569A (en) * | 2020-12-10 | 2021-03-30 | 合肥京东方光电科技有限公司 | Preparation method of display substrate, display substrate and display device |
| CN113193153A (en) * | 2021-04-30 | 2021-07-30 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
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| CN110289298B (en) * | 2019-06-28 | 2021-02-09 | 昆山国显光电有限公司 | Display device, display panel thereof and transparent display panel |
| CN110379839B (en) * | 2019-07-24 | 2021-11-02 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method of display substrate and display device |
| CN112490266A (en) * | 2019-09-11 | 2021-03-12 | 北京小米移动软件有限公司 | Display panel and terminal device |
| CN112582348B (en) * | 2020-12-10 | 2022-11-25 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN113299850B (en) * | 2021-05-08 | 2022-08-23 | 武汉华星光电半导体显示技术有限公司 | Display panel, manufacturing method of display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112582569A (en) * | 2020-12-10 | 2021-03-30 | 合肥京东方光电科技有限公司 | Preparation method of display substrate, display substrate and display device |
| CN113193153A (en) * | 2021-04-30 | 2021-07-30 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
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