CN113707675A - Display panel and preparation method thereof - Google Patents

Display panel and preparation method thereof Download PDF

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Publication number
CN113707675A
CN113707675A CN202110909067.7A CN202110909067A CN113707675A CN 113707675 A CN113707675 A CN 113707675A CN 202110909067 A CN202110909067 A CN 202110909067A CN 113707675 A CN113707675 A CN 113707675A
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China
Prior art keywords
light emitting
substrate
emitting unit
display panel
opening
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Granted
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CN202110909067.7A
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Chinese (zh)
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CN113707675B (en
Inventor
胡小波
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Publication of CN113707675A publication Critical patent/CN113707675A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
    • H01L27/142—Energy conversion devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

The application discloses a display panel and a preparation method thereof. The display panel includes a substrate, a plurality of light emitting units, a support layer, and a solar cell panel. The plurality of light emitting cells are disposed on the substrate. The supporting layer is arranged on one side of the substrate close to the light-emitting unit. The supporting layer is provided with a plurality of first openings. The first opening exposes the light emitting unit. The solar cell panel covers the supporting layer. The solar cell panel is provided with a plurality of second openings. The second opening is communicated with the first opening to expose the light-emitting unit. The application provides a display panel can improve the laminating degree of solar cell panel in display panel.

Description

Display panel and preparation method thereof
Technical Field
The application relates to the technical field of display, in particular to a display panel and a preparation method thereof.
Background
With the rapid development of display technology, display panels have been widely used in the fields of televisions, mobile phones, tablet computers, and the like. The display panel may supply power to the light emitting unit through the solar cell panel. The display panel can realize normal display without an external power supply. In a display panel using a solar cell panel as a power supply, the solar cell panel is generally bonded to a substrate. However, since the substrate of the display panel is provided with the signal routing lines, the solar cell panel cannot be sufficiently attached, which easily causes the rolling and tilting of the solar cell panel and the falling off, and affects the normal use of the display panel.
Disclosure of Invention
An object of the application is to provide a display panel and a preparation method thereof, which can improve the fitting degree of a solar cell panel in the display panel and avoid the solar cell panel from warping and falling off.
An embodiment of the present application provides a display panel, including:
a substrate;
a plurality of light emitting units disposed on the substrate;
the supporting layer is arranged on one side, close to the light-emitting unit, of the substrate, and is provided with a plurality of first openings, and the light-emitting unit is exposed out of the first openings;
the solar cell panel covers the supporting layer, is provided with a plurality of second openings, and is communicated with the first openings to expose the light-emitting units.
In some embodiments, a distance between a surface of the support layer away from the substrate and the substrate is greater than a distance between a surface of the light emitting unit away from the substrate and the substrate.
In some embodiments, the light emitting unit is located in the first opening, and the aperture of the second opening is greater than or equal to the aperture of the first opening.
In some embodiments, the support layer is an organic insulating layer, the first opening penetrates through the organic insulating layer to expose the light emitting unit, and the light emitting unit is located in the first opening.
In some embodiments, a glue layer is arranged between the solar cell panel and the support layer, and the solar cell panel and the support layer are fixed through the glue layer.
In some embodiments, the substrate further includes a driving circuit for driving the light emitting unit, the driving circuit is located at a side of the substrate where the light emitting unit is located, the supporting layer is an organic insulating layer, and the supporting layer covers the driving circuit.
In some embodiments, the light emitting unit includes a submillimeter-sized light emitting diode or a micro light emitting diode, and a plurality of the light emitting units are arrayed on the substrate;
the display panel further comprises a connecting terminal located below the light emitting unit, and the light emitting unit is electrically connected with the driving circuit through the connecting terminal.
In some embodiments, the display panel further includes a storage battery located on a side of the substrate away from the light emitting unit, the solar panel is electrically connected to the storage battery, and the storage battery is electrically connected to the driving circuit.
In some embodiments, the substrate is a glass substrate, and the driving circuit includes a thin film transistor formed on the glass substrate.
The embodiment of the present application further provides a method for manufacturing a display panel, including:
providing a plurality of light emitting cells on a substrate;
forming a supporting layer on the light-emitting unit, wherein the supporting layer is provided with a first opening, and the first opening exposes the light-emitting unit;
a solar cell panel is attached to the supporting layer, a second opening is formed in the solar cell panel, and the second opening is communicated with the first opening to expose the light emitting unit.
The display panel that this application embodiment provided includes base plate, luminescence unit, supporting layer and solar cell panel. The light emitting unit is disposed on the substrate. The supporting layer is arranged on one side of the substrate close to the light-emitting unit. The supporting layer is provided with a plurality of first openings. The first opening exposes the light emitting unit. The solar cell panel covers the supporting layer. The solar panel includes a plurality of second openings. The second opening is communicated with the first opening to expose the light-emitting unit. The display panel provided by the application is provided with the supporting layer on the substrate. The solar cell panel is attached to the supporting layer, so that the direct attachment of the solar cell panel to the substrate of the display panel is avoided. The supporting layer can provide smooth surface for solar cell panel, is favorable to improving the laminating degree of solar cell panel and supporting layer, avoids solar cell panel to take place to warp and drop, guarantees display panel's normal demonstration.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments and implementations of the application, 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 schematic structural diagram of a display panel according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of a display panel along line a-a' according to an embodiment of the present disclosure.
Fig. 3 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a manufacturing process of a display panel according to an embodiment of the present application.
Fig. 5 is a first flowchart for executing step B30 according to the embodiment of the present application.
Fig. 6 is a second flowchart for executing step B30 according to the embodiment of the present application.
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. It should be apparent that the described embodiments are only some 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.
It should be noted that the use of ordinal numbers such as first and second herein does not denote any order, quantity, or importance, but rather the terms first, second, etc. are used to distinguish one element from another. The directional terms used in this application, such as upper, lower, left and right, are used solely in reference to the orientation of the appended drawings. The positional relationship of [ one side ] and [ other side ] mentioned in the present application is used only for distinguishing different portions. Accordingly, the use of ordinal, directional and positional terms is to be taken as an illustration and understanding of the application and is not intended to limit the application. In the application, unless otherwise expressly stated or limited, a first feature "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in contact not in direct contact but via another feature in between. Like reference numerals refer to like elements throughout the specification. Because the dimensions and thicknesses of the various components illustrated in the drawings are presented for ease of illustration, the present disclosure is not necessarily limited to the illustrated dimensions and thicknesses of the various components.
As shown in fig. 1 and 2, a display panel 100 provided by the present application includes a substrate 101, a plurality of connection terminals 102(Bonding pads), a driving circuit 103, a plurality of light emitting units 104, a support layer 105, a solar cell panel 106, and a storage battery 107.
The substrate 101 may be a rigid substrate, such as a glass substrate. Other film layers, such as a buffer layer, a planarization layer, or a conductive layer, may be formed on the substrate according to the actual requirements of the display panel.
The connection terminal 102 is located at one side of the substrate 101. The plurality of connection terminals 102 are arranged in the first direction x and the second direction y. The first direction x is a row direction and the second direction y is a column direction. The first direction x is perpendicular to the second direction y. The plurality of connection terminals 102 are arranged in an array on the substrate 101 in the first direction x and the second direction y.
The drive circuit 103 is located on the side of the substrate 101 where the connection terminal 102 is provided. The driving circuit 103 is located at the edge of the substrate 101. The driving circuit 103 includes a thin film transistor formed on the substrate 101. The thin film transistor of the driving circuit 103 may be formed by a metal layer, an active layer, and an insulating layer through a photo mask. The driving circuit 103 is connected to the connection terminal 102 through signal traces (not shown). In the present application, the thin film transistor and the signal trace are formed on the substrate by forming the mask, and then the driving circuit 103 is formed. Compared with the traditional circuit board driving mode, the manufacturing process of the driving circuit 103 is finer, the thickness of the display panel is favorably thinned, and the miniaturization application of the display panel is realized.
The light emitting unit 104 may include a light emitting diode Chip (LED Chip), a submillimeter-sized light emitting diode Chip (Mini LED Chip), or a Micro light emitting diode Chip (Micro LED Chip). A plurality of light emitting cells 104 are arrayed on the substrate 101. The light emitting units 104 correspond to the connection terminals 102 one to one. The light emitting unit 104 is located on the connection terminal 102. The light emitting unit 104 is connected to the connection terminal 102. Specifically, the light emitting unit 104 may be electrically connected to the connection terminal 102 through a conductive paste, a solder paste, a silver paste, or the like. The connection terminal 102 is connected to the driving circuit 103 through signal wiring. The connection terminal 102 and the drive circuit 103 control the lighting and the extinguishing of the light emitting unit 104, thereby realizing the display of the display panel 100.
The support layer 105 is located at a side of the substrate 101 where the light emitting unit 104 and the driving circuit 103 are disposed. The distance between the surface of the support layer 105 away from the substrate 101 and the substrate 101 is greater than the distance between the surface of the driving circuit 103 away from the substrate 101 and the substrate 101. The support layer 105 covers the driving circuit 103. The material of the support layer 105 includes an organic insulating material, and the support layer 105 is an organic insulating layer. Therefore, when the support layer 105 covers the driving circuit 103, the support layer 105 may function to insulate water and oxygen. The supporting layer 105 covering the driving circuit 103 can prevent water and oxygen in the air from entering the driving circuit 103, which is beneficial to prolonging the service life of the display panel 100.
The distance between the surface of the support layer 105 away from the substrate 101 and the substrate 101 is greater than the distance between the surface of the light emitting unit 104 away from the substrate 101 and the substrate 101. When other film layers are attached to the upper side of the supporting layer 105, the supporting layer can support the light emitting unit 104, so that the film layer above the supporting layer 105 is prevented from contacting the light emitting unit 104, the light emitting unit 104 is protected, and the light emitting unit 104 is prevented from being damaged.
The supporting layer 105 has a plurality of first openings 1051 on a side thereof away from the substrate 101. The first openings 1051 correspond to the light emitting units 104 one to one. The light emitting unit 104 is located in the first opening 1051, and the first opening 1051 exposes the light emitting unit 104. The aperture d2 of the first opening 1051 is larger than the width d1 of the light emitting cell 104. By arranging the first openings 1051 and the light emitting units 104 in a one-to-one correspondence, and the aperture d2 of the first openings 1051 is larger than the width d1 of the light emitting units 104, light emitted by the light emitting units 104 can be prevented from being blocked by the supporting layer 105, which is beneficial to improving the brightness of the display panel 100.
The support layer 105 may be an organic insulating layer. The organic insulating layer includes a plurality of first openings 1051. The first opening 1051 penetrates the organic insulating layer to expose the light emitting unit 104. The light emitting unit 104 is located in the first opening 1051. Alternatively, the material of the support layer 105 may be the same as that of the flat layer of the display panel. The support layer 105 may provide a flat surface to facilitate the adhesion of the film layer on the support layer 105 to the support layer 105. The thickness of the support layer 105 is between 100 microns and 500 microns. Specifically, the thickness of the support layer 105 may be 100 micrometers, 200 micrometers, 300 micrometers, 400 micrometers, or 500 micrometers.
The solar panel 106 is located on a side of the support layer 105 remote from the light emitting unit 104. The solar panel 106 includes a plurality of second apertures 1061. The second openings 1061 correspond to the first openings 1051 one to one. The second opening 1061 communicates with the first opening 1051. The second opening 1061 and the first opening 1051 expose the light emitting unit 104. The aperture d3 of the second opening 1061 is greater than the width d1 of the light emitting cell 104. The aperture d3 of the second opening 1061 is equal to the aperture d2 of the first opening 1051. The above arrangement can prevent the light emitted by the light emitting unit 104 from being blocked by the solar cell panel 106, which is beneficial to improving the brightness of the display panel 100.
In the present application, the aperture d3 of the second aperture 1061 may be provided to be larger than the aperture d2 of the first aperture 1051. The solar panel 106 is typically perforated by laser cutting. The aperture d3 of the second opening 1061 is larger than the aperture d2 of the first opening 1051, so as to prevent the light emitting unit 104 from being cut by laser when the solar panel 106 is cut, and thus the light emitting unit 104 is disabled. In addition, the aperture d3 of the second opening 1061 is larger than the aperture d2 of the first opening 1051, so that the aperture ratio of the display panel 100 can be further increased, which is favorable for improving the brightness of the display panel 100.
A glue layer (not shown) is provided between the solar panel 106 and the support layer 105. The solar cell panel 106 and the support layer 105 are fixed by an adhesive layer. Optionally, the glue layer is an optical glue (OCA glue). The solar cell panel 106 is attached to the support layer 105 by an optical glue. This application is fixed solar cell panel 106 and supporting layer 105 through the glue film. Compared with the process of welding the traditional solar cell panel on the display panel 100, the fixing mode of the solar cell panel 106 is simpler, the process is finer, the alignment precision of the second opening 1061 and the first opening 1051 is higher, and the preparation of the display panel 100 with high resolution is facilitated.
The thickness of the solar panel 106 is between 1 micron and 100 microns. In particular, the thickness of the solar panel 106 may be 1 micron, 10 microns, 25 microns, 50 microns, 75 microns, or 100 microns. The driving voltage of the display panel 100 is between 5 volts and 30 volts. Specifically, the driving voltage of the display panel 100 may be 5 volts, 10 volts, 15 volts, or 30 volts. The thickness that sets up solar cell panel 106 in this application is between 1 micron to 100 microns, can guarantee that solar cell panel 106 avoids display panel 100's thickness too big when providing sufficient drive voltage for display panel 100, is favorable to realizing display panel 100's frivolousization.
The material of the solar panel 106 may include gallium arsenide (GaAs), copper indium gallium selenide [ Cu (In)(1－x)Ga(x))Se2]Or cadmium telluride (CdTe).
The battery 107 is located on the side of the substrate 101 remote from the light emitting unit 104. The storage battery 107 is arranged on the side of the substrate 101 away from the light-emitting unit 104 in the present application, so that the storage battery 107 can be prevented from influencing the aperture ratio of the light-emitting unit 104. The solar cell panel 106 is electrically connected to the battery 107 via terminal wires at the edge. Specifically, the terminal lines may be disposed On a Chip On Film (COF). The flip chip may be bent, and the storage battery may be disposed on the backlight side of the display panel 100. The solar panel 106 converts light energy into electrical energy. Electric energy is stored in the battery 107 through the terminal line.
The battery 107 may be connected to the drive Circuit 103 via a Printed Circuit Board (PCB). The electric power stored in the storage battery 107 supplies power to the driving circuit 103 and the light emitting unit 104, thereby realizing display of the display panel 100.
It is understood that, in the present application, the aperture d2 of the first opening 1051 may be equal to the width d1 of the light emitting cell 104. Fig. 1 and 2 illustrate that the aperture d2 of the first opening 1051 may be larger than the width d1 of the light emitting unit 104, but is not limited thereto.
In the present application, the included angle between the first direction x and the second direction y may be greater than 0 degree and less than or equal to 90 degrees. The included angle between the first direction x and the second direction y is 90 degrees in this application, but the present application is not limited thereto.
The display panel that this application embodiment provided includes base plate, luminescence unit, supporting layer and solar cell panel. The display panel of this application sets up the supporting layer between base plate and the solar cell panel. The support layer provides a flat surface. Therefore, the solar cell panel can be effectively attached to the supporting layer, and the situation that the solar panel cannot be effectively attached to the substrate due to the fact that the signal routing is arranged on the substrate is avoided. Meanwhile, the supporting layer can play a scratch-resistant role. Signal traces are typically disposed on the substrate. If the solar cell panel is directly attached to the substrate, the solar cell panel and the signal wiring are easy to rub, and the solar cell panel and the signal wiring are easy to damage. The supporting layer covers the signal wiring on the substrate, and the solar cell panel is in direct contact with one side of the supporting layer, which is far away from the signal wiring. The supporting layer can play the effect of preventing scraping, has avoided solar cell panel and signal to walk line direct contact, is favorable to protecting solar cell panel and signal to walk the line.
The embodiment of the application also provides a preparation method of the display panel. As shown in fig. 3 and 4, the method for manufacturing a display panel provided by the present application specifically includes the following steps:
step B10: a plurality of light emitting cells are disposed on a substrate.
As in the structure (a) of fig. 4, the substrate 101 may be a hard substrate, for example, the substrate 101 may be a glass substrate 101. The material of the substrate 101 may be selected according to the actual needs of the display panel 100.
Before the light emitting unit 104 is disposed on the substrate 101, the driving circuit 103, the connection terminal 102, and the signal trace may be formed on the surface of the substrate 101 by means of a mask. The driving circuit 103 includes a thin film transistor and a signal trace formed on the substrate 101. The driving circuit 103 is disposed at the edge of the display panel 100, and the connection terminals 102 are distributed in an array in the display panel 100. The connection terminal 102 is connected to the driving circuit 103 through signal wiring.
In the present application, the thin film transistor and the signal trace are formed on the substrate by forming the mask, and then the driving circuit 103 is formed. Compared with the traditional circuit board driving mode, the manufacturing process of the driving circuit 103 is finer, the thickness of the display panel is favorably thinned, and the miniaturization application of the display panel is realized.
The light emitting units 104 correspond to the connection terminals 102 one to one. The light emitting units 104 are electrically connected to the connection terminals 102 through a conductive paste, a solder paste, a silver paste, or the like, so that the light emitting units 104 are uniformly distributed on the display panel 100.
Step B20: a supporting layer is formed on the light-emitting unit, a first opening is formed in the supporting layer, and the light-emitting unit is exposed out of the first opening.
After the light emitting unit 104 is disposed on the substrate 101, a patterned mask may be disposed above the substrate 101. The place where the support layer 105 is not required to be formed is masked with a mask plate, and the rest is coated with a material corresponding to the support layer 105. As shown in fig. 4 (b), the supporting layer 105 is formed to include a plurality of first openings 1051, and the first openings 1051 correspond to the light emitting units 104 one to one. The first opening 1051 exposes the light emitting unit 104, thereby preventing the supporting layer 105 from affecting the aperture ratio of the display panel 100.
The material of the support layer 105 may include an organic insulating material. The support layer may be an organic insulating layer. Alternatively, the material of the support layer 105 may be the same as that of the flat layer of the display panel 100.
Step B30: the solar cell panel is attached to the supporting layer, the second opening is formed in the solar cell panel, and the second opening is communicated with the first opening to expose the light-emitting unit.
The solar cell panel 106 is attached to the support layer 105 to form a structure as shown in fig. 4 (c). The solar panel 106 includes a plurality of second apertures 1061. The second openings 1061 correspond to the first openings 1051 of the support layer 105 one to one. The second opening 1061 communicates with the first opening 1051 to expose the light emitting unit 104. Therefore, the preparation method of the display panel 100 provided by the present application can realize that the aperture ratio of the display panel 100 is not affected while the solar cell panel 106 supplies power to the display panel 100.
As shown in fig. 5, the step of attaching the solar cell panel 106 on the support layer 105 may include:
step B31: and patterning the solar panel through laser cutting to form a second opening.
Before the solar cell panel 106 is attached to the support layer 105, the solar cell panel 106 is patterned. The solar panel 106 may include GaAs panel, Cu (In)(1－x)Ga(x))Se2A panel or a CdTe panel. The solar panel 106 is patterned by a laser. During the cutting process, the solar cell panel 106 irradiated with the laser is subjected to strong thermal energy, and the temperature thereof is sharply increased. The high temperature causes the portion of the solar panel 106 to melt, thereby forming the second opening 1061.
Step B32: and attaching the solar cell panel subjected to patterning treatment to the supporting layer.
After the patterning process is performed on the solar panel 106. The first opening 1051 and the second opening 1061 are aligned so that the first opening 1051 and the second opening 1061 communicate. After the first opening 1051 and the second opening 1061 are aligned, the solar cell panel 106 and the support layer 105 are fixed by an adhesive layer. Alternatively, the solar cell panel 106 and the support layer 105 may be fixed by OCA glue.
As shown in fig. 6, the step of attaching the solar cell panel 106 on the support layer 105 may further include:
step B33: and (4) attaching the solar cell panel to the supporting layer.
Specifically, the solar cell panel 106 is attached to the support layer 105 by OCA glue.
Step B34: and patterning the solar panel through laser cutting to form a second opening.
After the solar cell panel 106 is attached to the support layer 105, the solar cell panel 106 is subjected to patterning. The solar cell panel 106 may be cut by a laser to form the second opening 1061. The cut solar panel 106 includes a plurality of second apertures 1061. The second openings 1061 correspond to the first openings 1051, and the second openings 1061 communicate with the first openings 1051 to expose the light emitting units 104.
In the present application, before the solar panel 106 is attached to the support layer 105, the support layer 105 may be photographed by a CCD camera to record the specific position of the first opening 1051 in the support layer 105. The CCD camera transmits the position information of the first opening 1051 to the controller, and the controller then obtains the cutting path of the solar cell panel 106 through model calculation, so that the second opening 1061 of the cut solar cell panel 106 corresponds to the first opening 1051 one to one.
After the solar panel 106 is attached to the support layer 105, the storage battery 107 is disposed on the side of the substrate 101 remote from the light emitting unit 104. The solar cell panel 106 and the battery 107 are electrically connected by a terminal wire. The battery 107 is connected to the drive through the PCB board. The solar cell panel 106 converts light energy into electric energy, and stores the electric energy in the storage battery 107. The power in the battery 107 supplies power to the driving circuit 103, thereby realizing normal display of the display panel 100.
It is understood that, in the present application, after the plurality of light emitting units 104 are disposed on the substrate 101, the support layer 105 may be formed through a side of the substrate 101 where the light emitting units 104 are disposed. A mask plate is placed at a position away from the support layer 105, and ultraviolet irradiation is performed on the support layer 105 through the mask plate to oxidize the support layer 105 in a local area. By dry etching the planarization layer, the oxidized planarization layer in a local region can be removed, thereby forming the first opening 1051. The first opening 1051 exposes the light emitting unit 104.
In the present application, the support layer 105 may also be formed by coating before the light emitting unit 104 is disposed on the substrate 101. The support layer 105 covers the driving circuit 103 and the connection terminal 102 on the substrate 101. The first opening 1051 is formed by development. The first opening 1051 exposes the connection terminal 102. The light emitting cells 104 are connected to the connection terminals 102 in the first openings 1051, whereby the plurality of light emitting cells 104 are provided on the substrate 101.
According to the preparation method of the display panel, the supporting layer is arranged between the substrate and the solar panel. The support layer provides a flat surface. Therefore, the solar cell panel can be effectively attached to the supporting layer, and the situation that the solar panel cannot be effectively attached to the substrate due to the fact that the substrate is provided with the circuit is avoided. Meanwhile, the supporting layer can play a scratch-resistant role. Signal traces are typically disposed on the substrate. If the solar cell panel is directly attached to the substrate, the solar cell panel and the signal wiring are easy to rub, and the solar cell panel and the signal wiring are easy to damage. The supporting layer covers the signal wiring on the substrate, and the solar cell panel is in direct contact with one side of the supporting layer, which is far away from the signal wiring. The supporting layer can play the effect of preventing scraping, has avoided solar cell panel and signal to walk line direct contact, is favorable to protecting solar cell panel and signal to walk the line.
In summary, although the embodiments of the present application are described in detail above, the above-mentioned embodiments are not intended to limit the present application, and it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims (10)

1. A display panel, comprising:
a substrate;
a plurality of light emitting units disposed on the substrate;
the supporting layer is arranged on one side, close to the light-emitting unit, of the substrate, and is provided with a plurality of first openings, and the light-emitting unit is exposed out of the first openings;
the solar cell panel covers the supporting layer, is provided with a plurality of second openings, and is communicated with the first openings to expose the light-emitting units.
2. The display panel according to claim 1, wherein a distance between a surface of the support layer away from the substrate and the substrate is greater than a distance between a surface of the light emitting unit away from the substrate and the substrate.
3. The display panel according to claim 1, wherein the light emitting unit is located in the first opening, and an aperture of the second opening is greater than or equal to an aperture of the first opening.
4. The display panel according to claim 1, wherein the supporting layer is an organic insulating layer, the first opening penetrates through the organic insulating layer to expose the light emitting unit, and the light emitting unit is located in the first opening.
5. The display panel according to claim 1, wherein a glue layer is provided between the solar cell panel and the support layer, and the solar cell panel and the support layer are fixed by the glue layer.
6. The display panel according to claim 1, wherein the substrate further comprises a driving circuit for driving the light emitting unit, the driving circuit is located on a side of the substrate where the light emitting unit is located, and the supporting layer is an organic insulating layer and covers the driving circuit.
7. The display panel according to claim 6, wherein the light emitting unit includes a submillimeter-sized light emitting diode or a micro-sized light emitting diode, and a plurality of the light emitting units are arranged in an array on the substrate;
the display panel further comprises a connecting terminal located below the light emitting unit, and the light emitting unit is electrically connected with the driving circuit through the connecting terminal.
8. The display panel according to claim 6, further comprising a storage battery on a side of the substrate away from the light emitting unit, wherein the solar cell panel is electrically connected to the storage battery, and wherein the storage battery is electrically connected to the driving circuit.
9. The display panel according to claim 6, wherein the substrate is a glass substrate, and the driving circuit comprises a thin film transistor formed over the glass substrate.
10. A method for manufacturing a display panel, comprising:
providing a plurality of light emitting cells on a substrate;
forming a supporting layer on the light-emitting unit, wherein the supporting layer is provided with a first opening, and the first opening exposes the light-emitting unit;
a solar cell panel is attached to the supporting layer, a second opening is formed in the solar cell panel, and the second opening is communicated with the first opening to expose the light emitting unit.
CN202110909067.7A 2021-08-09 2021-08-09 Display panel and preparation method thereof Active CN113707675B (en)

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KR20130006203A (en) * 2011-07-08 2013-01-16 엘지디스플레이 주식회사 Organic electroluminescence display device
CN109148524A (en) * 2018-08-13 2019-01-04 武汉华星光电半导体显示技术有限公司 A kind of OLED display panel and display device
CN109411521A (en) * 2018-10-31 2019-03-01 京东方科技集团股份有限公司 Display base plate and preparation method thereof, display panel
CN109904209A (en) * 2019-03-20 2019-06-18 京东方科技集团股份有限公司 Organic light emitting display panel and manufacturing method

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KR20130006203A (en) * 2011-07-08 2013-01-16 엘지디스플레이 주식회사 Organic electroluminescence display device
CN109148524A (en) * 2018-08-13 2019-01-04 武汉华星光电半导体显示技术有限公司 A kind of OLED display panel and display device
CN109411521A (en) * 2018-10-31 2019-03-01 京东方科技集团股份有限公司 Display base plate and preparation method thereof, display panel
CN109904209A (en) * 2019-03-20 2019-06-18 京东方科技集团股份有限公司 Organic light emitting display panel and manufacturing method

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