WO2023245947A1 - 显示面板、显示装置以及显示面板的制备方法 - Google Patents

显示面板、显示装置以及显示面板的制备方法 Download PDF

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Publication number
WO2023245947A1
WO2023245947A1 PCT/CN2022/128104 CN2022128104W WO2023245947A1 WO 2023245947 A1 WO2023245947 A1 WO 2023245947A1 CN 2022128104 W CN2022128104 W CN 2022128104W WO 2023245947 A1 WO2023245947 A1 WO 2023245947A1
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WIPO (PCT)
Prior art keywords
layer
substrate
carbonized
display panel
metal layer
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Application number
PCT/CN2022/128104
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English (en)
French (fr)
Inventor
彭兆基
张浩瀚
甘帅燕
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昆山国显光电有限公司
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Publication of WO2023245947A1 publication Critical patent/WO2023245947A1/zh

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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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • 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
    • 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

Definitions

  • the present application relates to the technical field of display equipment, and in particular, to a display panel, a display device, and a method for manufacturing a display panel.
  • Embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, which can reduce the occurrence of reflection problems.
  • embodiments of the present application provide a display panel, including a substrate, a metal layer, an optical functional layer and an optical adhesive layer.
  • the metal layer is arranged on one side of the substrate; the optical functional layer is arranged on the metal layer facing away from the substrate.
  • the optical adhesive layer includes a carbonized part;
  • the orthographic projection of the optical functional layer and the carbonized portion on the substrate covers the orthographic projection of the metal layer on the substrate.
  • the display panel includes a light-transmitting area and a frame area
  • the metal layer includes an exposed portion
  • the optical adhesive layer includes an optically transparent adhesive layer and an encapsulating adhesive layer
  • the carbonized portion is located in the optically transparent adhesive layer or the encapsulating adhesive layer.
  • the exposed part and the encapsulant layer are located in the light-transmitting area and/or the frame area, and the orthographic projection of the optical functional layer and the carbonized part on the substrate covers the orthographic projection of the exposed part on the substrate.
  • the carbonized portion is located on the encapsulating glue layer, and both the encapsulating glue layer and the carbonized portion are disposed adjacent to the optical functional layer.
  • the metal layer includes an array metal layer and/or a touch metal layer
  • the exposed portion includes a first exposed portion and/or a second exposed portion.
  • the first exposed part refers to the part of the touch metal layer located in the light-transmitting area and/or the frame area
  • the second exposed part refers to the part of the array metal layer located in the frame area
  • the optical functional layer and the carbonized part are on the substrate.
  • the orthographic projection covers the orthographic projection of the first exposed portion and/or the second exposed portion on the substrate.
  • the optical functional layer includes a first through hole located in the light-transmitting area, the first through hole penetrates the optical functional layer along the thickness direction of the substrate, the encapsulant layer is at least partially located within the first through hole, and the first through hole penetrates the optical functional layer along the thickness direction of the substrate.
  • the orthographic projection of the exposed portion on the substrate is at least partially located within the orthographic projection of the first through hole on the substrate.
  • the orthographic projection of the carbonized portion on the substrate is a ring-shaped structure, and the ring-shaped structure is located in the light-transmitting area and/or is located in the frame area.
  • the optical adhesive layer includes an adhesive film material, and the carbonized portion is formed by carbonizing part of the adhesive film material.
  • the carbonized part is formed by laser carbonization of part of the adhesive film material.
  • the thickness of the carbonized portion in the thickness direction is H, where 0.01 ⁇ m ⁇ H ⁇ 5 ⁇ m.
  • the display panel further includes a cover plate disposed on a side of the optical adhesive layer facing away from the substrate.
  • embodiments of the present application provide a display device, including the display panel of any of the foregoing embodiments.
  • inventions of the present application provide a method for manufacturing a display panel.
  • the preparation method includes:
  • An optical functional layer is provided on the side of the metal layer facing away from the substrate;
  • a preset adhesive layer is formed on the side of the metal layer facing away from the substrate, and the preset adhesive layer is located in the light-transmitting area and/or the frame area and is adjacent to the optical functional layer;
  • a carbonized portion is formed in the preset adhesive layer, and the orthographic projection of the optical functional layer and the carbonized portion on the substrate covers the orthographic projection of the exposed portion on the substrate.
  • forming a carbonized portion within the preset glue layer includes:
  • laser processing is performed on the side of the preset adhesive layer facing away from the substrate, so that part of the adhesive film material in the preset adhesive layer is carbonized to form a carbonized portion.
  • the laser energy is not greater than 5W and the laser wavelength is not greater than 450nm.
  • Embodiments of the present application provide a display panel, a display device, and a method for preparing a display panel.
  • a carbonized portion By arranging a carbonized portion on the optical adhesive layer, ambient light will be absorbed by the optical functional layer or the carbonized portion and thus cannot reach the location of the exposed portion, reducing the risk of environmental damage. There is a risk of reflective problems occurring on the surface or sides of small metal layers.
  • the carbonized part since the carbonized part is disposed in the optical adhesive layer, it does not occupy the space of other film layers, that is, it does not increase the thickness of the display panel.
  • Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • Figure 2 is a schematic cross-sectional structural diagram of A-A in Figure 1;
  • Figure 3 is a schematic cross-sectional structural diagram of yet another display panel provided by an embodiment of the present application.
  • Figure 4 is a schematic cross-sectional structural diagram of yet another display panel provided by an embodiment of the present application.
  • Figure 5 is a schematic cross-sectional structural diagram along B-B in Figure 1;
  • Figure 6 is a schematic structural diagram of another display panel provided by an embodiment of the present application.
  • Figure 7 is a schematic cross-sectional structural diagram of yet another display panel provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a display device provided by an embodiment of the present application.
  • Figure 9 is a flow chart of yet another method for manufacturing a display panel provided by an embodiment of the present application.
  • Figures 10a-10d are schematic process diagrams of a method for preparing a display panel provided by an embodiment of the present application.
  • FIG. 11 is a flow chart of yet another method for manufacturing a display panel provided by an embodiment of the present application.
  • FIGS. 1 to 4 An embodiment of the present application provides a display panel.
  • the display panel includes a substrate 1 , a metal layer 2 , an optical functional layer 4 and an optical adhesive layer 3 .
  • the metal layer 2 is disposed on one side of the substrate 1
  • the optical function layer 4 is disposed on the side of the metal layer 2 facing away from the substrate 1
  • the optical adhesive layer 3 includes a carbonized portion 31 .
  • the orthographic projection of the optical functional layer 4 and the carbonized portion 31 on the substrate 1 covers the orthographic projection of the metal layer 2 on the substrate 1 .
  • the display panel has a first area A1 and a second area A2 adjacent to the first area A1.
  • the first area A1 is an area of the display panel mainly used to achieve display effects.
  • the second area A2 is an area of the display panel other than the first area A1. Other areas are used to integrate signal wiring and electrical components in the display panel.
  • the optical adhesive layer 3 is at least partially located in the second area A2.
  • the substrate 1 can be made of light-transmitting materials such as glass, polyimide (PI), etc.
  • the optical adhesive layer 3 , the optical functional layer 4 and the metal layer 2 are located on the same side of the substrate 1 .
  • the optical adhesive layer 3 is mainly used to achieve fixation and encapsulation between adjacent film layers, reduce the risk of water vapor and other intrusions into the interior of the display panel, increase the service life of the display panel, and improve the gap problem between film layers.
  • the optical functional layer 4 is mainly used to adjust the light emitted by the display panel and improve the display effect of the display panel.
  • the optical functional layer is a polarizing film layer, which is used to improve the light emitted by the display panel to form a corresponding display image.
  • the polarizing film layer has a blocking effect on reflection caused by ambient light entering the interior of the display panel.
  • the metal layer 2 and the optical functional layer 4 are at least partially located in the first area A1.
  • the display panel is prone to a situation as shown in Figure 2 or Figure 3, that is, the optical functional layer 4 cannot completely cover the metal layer 2, or as shown in Figure 4, the optical functional layer 4 completely covers the metal. Layer 2 even partially extends beyond the possibility of metal layer 2. It should be noted that at least part of the optical adhesive layer 3 and the metal layer 2 are located in the second area A2, and the optical functional layer 4 can be located only in the first area A1, or can be located in both the first area A1 and the second area A1. In area A2, the embodiment of the present application does not limit this.
  • the optical functional layer 4 may not completely cover the metal layer 2, and external light will enter the display panel through the optical adhesive layer 3 and illuminate the parts of the metal layer 2 that are not covered by the optical functional layer 4, resulting in reflection. question. Even if the optical functional layer 4 completely covers the metal layer 2, external light may still illuminate the side of the metal layer 2, causing a reflection problem.
  • a carbonized portion 31 is provided inside the optical adhesive layer 3 , and the orthographic projection of the optical functional layer 4 and the carbonized portion 31 on the substrate 1 covers the orthographic projection of the metal layer 2 on the substrate 1 .
  • This design enables at least part of the ambient light that strikes the metal layer 2 along a specific path to be absorbed by the optical functional layer 4 or the carbonized portion 31, thereby reducing the problem of light reflection.
  • the carbonized portion 31 is provided on the optical adhesive layer 3 so that ambient light will be absorbed by the optical functional layer 4 or the carbonized portion 31 and thus cannot reach the location of the metal layer 2, thereby reducing the problem of reflection on the surface or side of the metal layer 2. risk of occurrence.
  • the carbonized portion 31 since the carbonized portion 31 is disposed in the optical adhesive layer 3, it does not occupy the space of other film layers, that is, it does not increase the thickness of the display panel.
  • the embodiment of the present application may also include a light emitting device layer, a buffer layer, a planarization layer, etc.
  • the specific film layer structure inside the display panel needs to be determined according to actual use or production requirements, and the embodiments of the present application do not limit this.
  • the display panel provided by the embodiments of the present application may be a liquid crystal display panel, an organic light-emitting display panel, a quantum dot display panel, etc., and the embodiments of the present application are not limited thereto.
  • the first area A1 includes a display area
  • the second area A2 includes a light-transmitting area A21 located in the first area A1, and a light-transmitting area A21 surrounding the first area A1.
  • the metal layer 2 includes an exposed portion
  • the optical adhesive layer 3 includes an optically transparent adhesive layer and an encapsulating adhesive layer
  • the carbonized portion 31 is located in the optically transparent adhesive layer or the encapsulating adhesive layer.
  • the optically transparent adhesive layer is located on the side of the optical functional layer 4 facing away from the substrate 1 , and the encapsulating adhesive layer and the optical functional layer 4 are arranged on the same layer.
  • Figure 2 shows that the carbonized part 31 is arranged on the optically transparent adhesive layer
  • Figures 3 to 5 show that the carbonized part 31 is arranged on the encapsulating adhesive layer.
  • the exposed portion 21 is located in the light-transmitting area A21 and/or in the frame area A22.
  • the optical functional layer 4 has a first through hole 41 formed through the substrate 1 along the thickness direction
  • the carbonized part 31 is located on the encapsulating glue layer, and both the encapsulating glue layer and the carbonized part 31 are arranged adjacent to the optical functional layer.
  • the first through hole 41 of the optical functional layer 4 is located in the light-transmitting area A21 , and the light-transmitting area A21 can integrate photosensitive elements such as an under-screen camera.
  • the display panel includes a photosensitive area for realizing the photosensitive function, and the range of the light-transmitting area A21 is larger than the range of the photosensitive area in the display panel.
  • the metal layer 2 includes the array metal layer 5
  • the array metal layer 5 is provided with a second through hole 51 penetrating along the thickness direction X to allow ambient light to better enter the photosensitive element.
  • the position of the hole 51 corresponds to the photosensitive area on the display panel.
  • the orthographic projection of the carbonized portion 31 and the optical film layer 4 on the substrate 1 just covers the orthographic projection of the array metal layer 5 on the substrate 1, that is, the carbonized portion
  • the boundary of 31 away from the first area is flush with the boundary of the array metal layer 5 away from the first area.
  • the light-transmitting area A21 can only realize the photosensitive function, or can realize the photosensitive function and the display function at the same time. The embodiment of the present application does not limit this. Based on this, the light-transmitting area in the embodiment of the present application does not mean that the entire area is light-transmitting. sex.
  • the frame area A22 is located around the outer peripheral side of the first area A1 and is mainly used for arranging the driving circuit in the display panel.
  • the exposed portion 21 may be located only in the light-transmitting area A21 or only in the frame area A22, or may be located in both the light-transmitting area A21 and the frame area A22.
  • the exposed part 21 is located in the light-transmitting area A21 and the frame area A22 at the same time, and the carbonized part 31 and the exposed part 21 are arranged oppositely.
  • the carbonized part 31 and the optical functional layer 4 can affect the light-transmitting area A21 and the frame area A22
  • the exposed portions 21 all play a covering role, thereby further reducing the risk of light reflection in the metal layer 2 .
  • the metal layer 2 includes an array metal layer 5 and/or a touch metal layer 6
  • the exposed portion 21 includes a first exposed portion 211 and/or a second exposed portion 212 .
  • the array metal layer 5 is mainly used to drive and control the display panel to emit light.
  • some metal traces need to be arranged in the frame area A22 to reduce their impact on the display effect of the first area A1.
  • the touch metal layer 6 is mainly used to realize the touch function of the display panel. Due to insufficient processing accuracy or actual design requirements, the touch metal layer 6 is easily partially located in the light-transmitting area A21, such as in the light-transmitting area A21, surrounding An opaque touch metal ring is installed in the photosensitive area, causing reflection problems.
  • the first exposed portion 211 mentioned in the embodiment of this application may refer to the exposed portion of the touch metal layer 6 located in the light-transmitting area A21, or may also refer to the exposed portion of the touch metal layer 6 located in the frame area A22.
  • the exposed portion is not limited in the embodiments of the present application.
  • the first exposed portion 211 is located in the light-transmitting area A21, for example, an opaque touch metal ring is provided around the light-sensitive area.
  • the second exposed portion 212 mentioned in the embodiment of this application refers to the exposed portion of the array metal layer 5 located in the frame area A22.
  • the embodiment of the present application uses the optical functional layer 4 and the carbonized portion 31 to block the touch metal layer 6 located in the light-transmitting area A21 and/or the array metal layer 5 located in the frame area A22, thereby reducing the reflection of the metal layer 2 risk of problems and improve the display effect of the display panel.
  • the optical functional layer 4 includes a first through hole 41 located in the light-transmitting area A21 , and the first through hole 41 penetrates the optical functional layer 4 along the thickness direction X of the substrate 1 .
  • the optical adhesive layer 3 is at least partially located within the first through hole 41 , and the orthographic projection of the first exposed portion 211 on the substrate 1 is at least partially located within the orthographic projection of the first through hole 41 on the substrate 1 .
  • the optical functional layer 4 penetrates to form a first through hole 41 along the thickness direction into the photosensitive element, thereby improving the photosensitive effect of the display panel.
  • the touch metal layer 6 is easily partially located in the light-transmitting area A21.
  • the optical functional layer 4 may also be partially located in the light-transmitting area A21, but cannot completely cover the first exposed portion 211 located in the light-transmitting area A21, so that the first exposed portion 211 is not fully covered.
  • the orthographic projection of the portion 211 on the substrate 1 is at least partially located within the orthographic projection of the first through hole 41 on the substrate 1 .
  • ambient light may illuminate the first exposed portion 211 through the first through hole 41, causing reflection problems.
  • the carbonized portion 31 is disposed in the first through hole 41 . Since the carbonized portion 31 is formed by carbonization through laser processing, the size of the carbonized portion 31 can be accurately controlled so that it can be positioned on the substrate 1 The front projection and the first exposed portion 211 at least partially overlap with the front projection of the substrate 1 , thereby reducing the occurrence of reflection problems.
  • the edge of the optical functional layer 4 near the first through hole 41 is usually used to shield the metal layer 2 rather than to adjust light, and the optical functional layer 4 itself has certain light-shielding properties. Therefore, in the embodiment of the present application, the carbonized part 31 is arranged adjacent to the optical functional layer 4. During the formation process of the carbonized part 31, even if the edge of the optical functional layer 4 undergoes structural changes due to the influence of the processing process, it will not cause any structural changes. The display effect of the display panel and the optical adjustment effect of the optical functional layer 4 are affected.
  • the carbonized part 31 and the optical functional layer 4 are arranged in contact with each other so that there will be no gap between the carbonized part 31 and the optical functional layer 4 , thereby preventing light from passing between the carbonized part 31 and the optical functional layer 4 time to enter or leave the display panel.
  • the orthographic projection of the carbonized portion 31 on the substrate 1 is a ring-shaped structure, the ring-shaped structure is located in the light-transmitting area A21, and the first area A1 surrounds the outer peripheral side of the ring-shaped structure; and /Or, the annular structure is located in the frame area A22 and is arranged around the display area.
  • the carbonized portion 31 is represented by a dotted line in FIG. 4 .
  • the orthographic projection of the carbonized part 31 on the substrate 1 is a ring-shaped closed structure.
  • the first area A1 is located on the outer peripheral side of the carbonized part 31; when the carbonized part 31 is located in the frame area A22, The carbonized portion 31 is located on the outer peripheral side of the first area A1.
  • This design can enable the carbonized part 31 to better shield the exposed part 21 and further reduce the risk of reflection problems.
  • the carbonized portion 31 is distributed around the orthographic projection of the substrate 1 around the second through hole 51 on the outer peripheral side of the orthographic projection of the substrate 1 .
  • This design places the carbonized portion 31 outside the photosensitive area, thereby reducing the impact of the carbonized portion 31 on the display effect of the display panel.
  • the optical adhesive layer 3 further includes an adhesive film material, and the carbonized portion 31 is formed by carbonizing the adhesive film material.
  • the carbonization process can ensure that the generated carbonized portion 31 has the effect of blocking the passage of light, thereby reducing the probability of occurrence of reflection problems.
  • the carbonized portion 31 is formed by laser carbonization of the adhesive film material.
  • the optical adhesive layer 3 includes a body part 32 and a carbonized part 31 .
  • the body part 32 is the part inside the optical adhesive layer 3 used for bonding.
  • the adhesive film material is used to form the body part 32 .
  • the carbonized part 31 is formed by laser carbonization of the adhesive film material. This design can improve the processing accuracy of the carbonized part 31 without adding additional materials.
  • the adhesive film material includes liquid optical clear resin (OCR, Optical Clear Resin), and the carbonized portion 31 is formed by laser carbonization of the solidified liquid optical resin.
  • an initial film layer is first formed by coating or attaching an adhesive film material, and then laser irradiation is performed on part of the initial film layer to form the carbonized portion 31.
  • the other parts of the initial film layer become the main body part 32 of the optical adhesive layer 3 .
  • laser processing For laser irradiation processing, it is usually necessary to use high-precision photography equipment to locate the part that needs to be carbonized, and record the data into the laser equipment. Then the laser equipment irradiates the specific area with laser to carbonize and form the carbonized part 31. Therefore, laser processing can ensure precise carbonization of specific areas in the optical adhesive layer 3 and ensure the dimensional accuracy of the carbonized portion 31 .
  • the carbonized part 31 is formed by carbonization of the adhesive film material used to form the body part 32, so there is no need to add other additional materials, thereby reducing material costs. Moreover, this processing can also ensure the dimensional accuracy of the carbonized portion 31 and ensure the shielding effect of the carbonized portion 31 on the metal layer 2 .
  • At least part of the body portion 32 is located between the metal layer 2 and the carbonized portion 31 .
  • the carbonized part 31 and the metal layer 2 are separated in the thickness direction 2 structure is damaged.
  • the thickness of the carbonized portion 31 in the thickness direction X is H, where 0.01 ⁇ m ⁇ H ⁇ 5 ⁇ m.
  • the carbonized portion 31 is formed by laser carbonization, and the thickness of the carbonized portion 31 can be adjusted by laser energy. Among them, if the thickness of the carbonized portion 31 is too thin, the shielding effect of the carbonized portion 31 will be poor; if the thickness of the carbonized portion 31 is too thick, greater laser power will be required for preparation and formation, and greater laser energy will easily cause The optical adhesive layer 3 heats up rapidly, thereby causing the risk of ignition.
  • the embodiment of the present application controls the thickness of the carbonized portion 31 to be no less than 0.01 ⁇ m and no more than 5 ⁇ m. While meeting the light-shielding requirements of the carbonized portion 31, it can also reduce the risk of ignition of the optical adhesive layer 3 due to excessive laser energy.
  • the display panel further includes a cover plate 7 disposed on a side of the optical function layer 4 facing away from the substrate.
  • the optically transparent adhesive layer can also regulate ambient light or light emitted from inside the display panel to a certain extent.
  • an optically transparent glue layer is provided to cover the carbonized part 31 , so that the optical glue layer 7 can adjust the light incident on the carbonized part 31 .
  • an embodiment of the present application provides a display device, including the display panel in any of the aforementioned embodiments.
  • the display device provided by the embodiment of the present application has the beneficial effects of the display panel provided by the embodiment of the present application.
  • the display panel provided by the embodiment of the present application.
  • FIG. 9 is a flow chart of yet another method for manufacturing a display panel provided by an embodiment of the present application.
  • Embodiments of the present application provide a method for preparing a display panel.
  • the preparation method includes:
  • S100 Form a metal layer on one side of the substrate, and the metal layer includes an exposed portion.
  • the display panel has a first area A1 and a second area A2.
  • the second area A2 includes a light-transmitting area and a frame area.
  • the substrate 1 can be made of glass, polyimide (PI) and other light-transmitting materials.
  • the metal layer 2 is located on one side of the substrate 1.
  • the metal layer 2 includes but is not limited to a touch panel used to implement the touch function. Metal layer 6 and/or array metal layer 5, etc.
  • the array metal layer 5 is mainly used to drive and control the display panel to emit light.
  • some metal traces need to be arranged in the frame area to reduce their impact on the display effect of the first area A1.
  • the exposed portion 21 includes a second exposed portion 212 located on the array metal layer 5 and located in the frame area.
  • the touch metal layer 6 is mainly used to implement the touch function of the display panel. Due to insufficient processing accuracy or actual design requirements, the touch metal layer 6 is easily partially located in the light-transmitting area, causing reflection problems.
  • the exposed portion 21 includes a first exposed portion 211 located on the touch metal layer 6 and located in the light-transmitting area.
  • S110 Set an optical functional layer on the side of the metal layer facing away from the substrate.
  • the optical functional layer 4 is mainly used to adjust the light emitted by the display panel and improve the display effect of the display panel.
  • the optical functional layer 4 may be located only in the first area A1, or may be located in both the first area A1 and the second area A2. This is not limited in the embodiment of the present application.
  • S120 Form a preset adhesive layer on the side of the metal layer facing away from the substrate.
  • the preset adhesive layer is located in the light-transmitting area and/or the frame area and is adjacent to the optical functional layer.
  • the preset glue layer 3' is located on the side of the metal layer 2 facing away from the substrate 1.
  • the preset glue layer 3' can be used to achieve fixation between adjacent film layers, and at a certain To a certain extent, it can adjust the ambient light or the light emitted from inside the display panel.
  • a carbonized portion 31 is formed in a partial area of the preset glue layer, and at the same time, the preset glue layer is transformed into an optical glue layer 3.
  • the optical glue layer 3 includes, in addition to the carbonized portion 31, Main body part 32.
  • the carbonized portion 31 in the embodiment of the present application does not need to occupy additional space for other film layers, thereby avoiding increasing the thickness of the display panel.
  • the orthographic projection of the optical functional layer 4 and the carbonized portion 31 on the substrate 1 covers the exposed portion 21. This design can reduce the reflection of ambient light by the exposed portion 21 and reduce the risk of reflection problems.
  • FIG. 11 is a flow chart of yet another method for manufacturing a display panel provided by an embodiment of the present application.
  • Step S130 includes:
  • S131 Determine the position information of the optical functional layer and the exposed portion.
  • step S131 a high-precision camera can be used to achieve high-precision positioning of the exposed part to ensure that the position information obtained is accurate, and then the obtained position information can be transmitted to the corresponding laser equipment for subsequent laser carbonization processing.
  • S132 Perform laser processing on the side of the preset adhesive layer facing away from the substrate according to the position information, so that part of the adhesive film material in the preset adhesive layer is carbonized to form a carbonized portion.
  • step S132 the laser equipment irradiates a specific area in the preset adhesive layer 3' according to the obtained position information, so that part of the adhesive film material is carbonized to form a carbonized portion.
  • the laser processing in the embodiment of the present application can also ensure the dimensional accuracy of the shielding part and ensure the shielding effect of the shielding part on the metal layer.
  • the laser energy is not greater than 5W and the laser wavelength is not greater than 450nm.
  • the carbonized part is formed by laser carbonization, and the thickness of the carbonized part can be adjusted by laser energy. Among them, if the thickness of the carbonized part is too thin, it will easily lead to poor shielding effect of the carbonized part; if the thickness of the carbonized part is too thick, it will require greater laser power to prepare and form, and greater laser energy will easily cause the optical adhesive layer to form. Heats up quickly, causing risk of ignition.
  • the embodiment of the present application controls the laser energy and laser wavelength so that the carbonized portion formed will not be too thin or too thick. While satisfying the shielding function of the carbonized part, it can also reduce the risk of ignition of the optical adhesive layer due to excessive laser energy.

Abstract

本申请提供了一种显示面板、显示装置以及显示面板的制备方法，显示面板包括衬底、金属层、光学功能层以及光学胶层，金属层设置于衬底的一侧；光学功能层设置于金属层背离衬底的一侧；光学胶层包括碳化部。其中，光学功能层与碳化部在衬底的正投影覆盖金属层在衬底的正投影。本申请实施例通过在光学胶层设置碳化部，使得环境光线会被光学功能层和/或碳化部吸收，从而无法到达金属层所在位置，减小金属层表面或侧面发生反光问题发生的风险。此外由于碳化部设置于光学胶层，因此不会占用其他膜层空间，即不会增大显示面板厚度。

Description

显示面板、显示装置以及显示面板的制备方法
本申请要求于2022年06月20日提交中国专利局、申请号为202210699318.8、申请名称为“显示面板、显示装置以及显示面板的制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示设备技术领域，尤其涉及一种显示面板、显示装置以及显示面板的制备方法。
背景技术
随着显示技术的发展，消费者对显示设备提出了更加严格的要求，因此显示设备需要呈现更好的显示效果以满足消费者需要。但是目前显示面板仍然存在有反光问题，影响用户的良好体验。
发明内容
本申请实施例提供了一种显示面板、显示装置以及显示面板的制备方法，能够减少反光问题的发生。
第一方面，本申请实施例提供了一种显示面板，包括衬底、金属层、光学功能层以及光学胶层，金属层设置于衬底的一侧；光学功能层设置于金属层背离衬底的一侧，光学胶层包括碳化部；
其中，光学功能层与碳化部在衬底的正投影覆盖金属层在衬底的正投影。
在一些实施例中，显示面板包括透光区和边框区，金属层包括露出部，光学胶层包括光学透明胶层和封装胶层，碳化部位于光学透明胶层或封装胶层。
其中，露出部和封装胶层位于透光区和/或边框区内，光学功能层与碳化部在衬底的正投影覆盖露出部在衬底的正投影。
在一些实施例中，碳化部位于封装胶层，封装胶层和碳化部均与光学功能层邻接设置。
在一些实施例中，金属层包括阵列金属层和/或触控金属层，露出部包括第一露出部和/或第二露出部。其中，第一露出部是指触控金属层位于透光区和/或边框区内的部分，第二露出部是指阵列金属层位于边框区内的部分，光学功能层与碳化部在衬底的正投影覆盖第一露出部和/或第二露出部在衬底的正投影。
在一些实施例中，光学功能层包括位于透光区内的第一通孔，第一通孔沿衬底的厚度方向贯穿光学功能层，封装胶层至少部分位于第一通孔内，第一露出部在衬底的正投影至少部分位于第一通孔在衬底的正投影内。
在一些实施例中，碳化部在衬底的正投影为环状结构，环状结构位于透光区，和/或位于边框区内。
在一些实施例中，光学胶层包括胶膜材料，碳化部由部分胶膜材料碳化形成。
在一些实施例中，碳化部由部分胶膜材料激光碳化形成。
在一些实施例中，碳化部在厚度方向上的厚度为H，其中，0.01μm≤H≤5μm。
在一些实施例中，显示面板还包括设置于光学胶层背离衬底一侧的盖板。
第二方面，本申请实施例提供了一种显示装置，包括前述任一实施方式的显示面板。
第三方面，本申请实施例提供了一种显示面板的制备方法，制备方法包括：
在衬底一侧形成金属层，金属层包括露出部；
在金属层背离衬底一侧设置光学功能层；
在金属层背离衬底的一侧形成预设胶层，预设胶层位于透光区和/或边框区内与光学功能层邻接设置；
在预设胶层内形成碳化部，光学功能层与碳化部在衬底的正投影覆盖露出部在衬底的正投影。
在一些实施例中，在预设胶层内形成碳化部，包括：
确定光学功能层和露出部的位置信息；
根据位置信息，对预设胶层背离衬底的一面进行激光处理，以使预设胶层中的部分胶膜材料碳化形成碳化部。
在一些实施例中，在根据位置信息，对预设胶层背离衬底的一面进行激光处理中，激光能量不大于5W且激光波长不大于450nm。
本申请实施例提供一种显示面板、显示装置以及显示面板的制备方法，通过在光学胶层设置碳化部，使得环境光线会被光学功能层或碳化部吸收，从而无法到达露出部所在位置，减小金属层表面或侧面发生反光问题发生的风险。此外由于碳化部设置于光学胶层内，因此不会占用其他膜层空间，即不会增大显示面板的厚度。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单的介绍，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种显示面板的结构示意图；
图2是图1中A-A的剖面结构示意图；
图3是本申请实施例提供的又一种显示面板的剖面结构示意图；
图4是本申请实施例提供的又一种显示面板的剖面结构示意图；
图5是图1中B-B的剖面结构示意图；
图6是本申请实施例提供的又一种显示面板的结构示意图；
图7是本申请实施例提供的还一种显示面板的剖面结构示意图；
图8是本申请实施例提供的一种显示装置的结构示意图；
图9是本申请实施例提供的还一种显示面板的制备方法的流程图；
图10a-图10d是本申请实施例提供的一种显示面板的制备方法的过程示意图；
图11是本申请实施例提供的还一种显示面板的制备方法的流程图。
标记说明：
1、衬底；
2、金属层；21、露出部；211、第一露出部；212、第二露出部；
3、光学胶层；31、碳化部；32、本体部；
4、光学功能层；41、第一通孔；
5、阵列金属层；51、第二通孔；
6、触控金属层；
7、盖板；
3’、预设胶层；
A1、第一区；A2、第二区；A21、透光区；A22、边框区；
X、厚度方向。
具体实施方式
下面将详细描述本申请的各个方面的特征和示例性实施例，为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施例，对本申请进行进一步详细描述。应理解，此处所描述的具体实施例仅意在解释本申请，而不是限定本申请。对于本领域技术人员来说，本申请可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过示出本申请的示例来提供对本申请更好的理解。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括……”限 定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
随着科技的进步，人们对显示面板的要求越来越高，但是目前的显示面板中仍存在有反光问题。申请人通过研究发现，原因之一是受限于加工工艺的影响，导致显示面板内部用于实现显示或触控等功能的金属层的加工精度不高，因此金属层以及上方光学功能层的投影尺寸不尽相同，光学功能层无法完全覆盖金属层，金属层的部分边缘区域会露出，照射至显示面板内部的环境光会通过金属层反射到人眼内或者光学功能层即使完全覆盖金属层，金属层侧面也可能会将入射光反射到人眼中，从而观察到反光问题。
为了解决上述问题，请参阅图1至图4，本申请实施例提供了一种显示面板，显示面板包括衬底1、金属层2、光学功能层4以及光学胶层3。金属层2设置于衬底1的一侧，光学功能层4设置于金属层2背离衬底1的一侧，光学胶层3包括碳化部31。其中，光学功能层4与碳化部31在衬底1的正投影覆盖金属层2在衬底1的正投影。
显示面板具有第一区A1和与第一区A1邻接的第二区A2，第一区A1为显示面板中主要用于实现显示效果的区域，第二区A2为显示面板中除第一区A1以外的其他区域，用于集成显示面板中的信号走线以及电器元件等。其中，光学胶层3至少部分位于第二区A2内。
衬底1可以采用玻璃、聚酰亚胺(Polyimide，PI)等透光材料制成，光学胶层3、光学功能层4以及金属层2位于衬底1的同一侧。光学胶层3主要用于实现相邻膜层之间的固定和封装，降低水汽等入侵至显示面板内部的风险，提高显示面板的使用寿命以及改善膜层之间的段差问题。
光学功能层4主要用于调节显示面板所发出的光线，提高显示面板的显示效果。示例性地，光学功能层为偏光膜层，用于改善显示面板发出的光线以形成对应显示画面，此外，偏光膜层对于环境光进入显示面板内部造成的反光具有阻挡作用。其中，金属层2和光学功能层4均至少部分位于第一区A1内。
由于加工精度的不足，显示面板容易会出现如图2或图3所示的情况，即光学功能层4无法完全覆盖金属层2可能，或者出现如图4所示，光学功能层4完全覆盖金属层2甚至部分超出金属层2的可能。需要说明的是，光学胶层3与金属层2中的至少部分均位于第二区A2内，而光学功能层4可以仅位于第一区A1内，也可以同时位于第一区A1和第二区A2内，本申请实施例对此不作限制。
申请人研究发现，光学功能层4可能无法完全覆盖金属层2，外界光线会通过光学胶层3进入至显示面板内，并照射至金属层2未被光学功能层4覆盖的部分，从而出现反光问题。而即使光学功能层4完全覆盖金属层2，外界光线也可能照射至金属层2的侧面上，从而出现反光问题。
因此本申请实施例在光学胶层3的内部设置有碳化部31，并使光学功能层4与碳化部31在衬底1的正投影覆盖金属层2在衬底1的正投影。这种设计使得沿特定路径照射至金属层2上的至少部分环境光线能够通过光学功能层4或碳化部31得到吸收，从而减小反光问题。
本申请实施例通过在光学胶层3设置碳化部31，使得环境光线会被光学功能层4或碳化部31吸收，从而无法到达金属层2所在位置，减小金属层2表面或侧面发生反光问题发生的风险。此外由于碳化部31设置于光学胶层3内，因此不会占用其他膜层空间，即不会增大显示面板的厚度。
需要说明的是，本申请实施例中除了包括有衬底1、金属层2、光学功能层4以及光学胶层3外，还可以包括发光器件层、缓冲层、平坦化层等等。对于显示面板内部的具体膜层结构，需要根据实际使用或制备需求决定，本申请实施例对此不作限制。此外，本申请实施例提供的显示面板可以为液晶显示面板，也可以为有机发光显示面板，也可以为量子点显示面板等，本申请实施例对此也不作限制。
在一些实施例中，请参阅图1至图6，第一区A1包括显示区，第二区A2包括位于第一区A1内的透光区A21，以及围设于第一区A1外周侧的边框区A22，金属层2包括露出部21，光学胶层3包括光学透明胶层和封装胶层，碳化部31位于光学透明胶层或封装胶层。光学透明胶层位于光学功能层4背离衬底1的一侧，封装胶层与光学功能层4同层设置。其中图2表示碳化部31设置在光学透明胶层，图3至图5表示碳化部31设置在封装胶层上。
露出部21位于透光区A21内和/或位于边框区A22内。示例性地，光学功能层4具有沿衬底1厚度方向X贯穿形成的第一通孔41，第一通孔41位于透光区A21内，封装胶层至少部分位于第一通孔41内。可选地，碳化部31位于封装胶层，封装胶层和碳化部31均与光学功能层邻接设置。
如图3所示，光学功能层4的第一通孔41位于透光区A21内，透光区A21能够集成例如屏下摄像头等感光元件。需要说明的是，显示面板内包括有用于实现感光功能的感光区，透光区A21的范围要大于显示面板中感光区的范围。示例性地，金属层2中包括有阵列金属层5时，阵列金属层5上设置有沿厚度方向X贯穿的第二通孔51，以使环境光线更好地入射至感光元件，第二通孔51所处位置即对应于显示面板上的感光区，此时，碳化部31与光学膜层4在衬底1的正投影正好覆盖阵列金属层5在衬底1的正投影，即碳化部31远离第一区的边界与阵列金属层5远离第一区的边界齐平。此外透光区A21可以仅实现感光功能，也可以同时实现感光功能以及显示功能，本申请实施例对此不作限制，基于此，本申请实施例中的透光区并非指整个区域都具有透光性。
如图5所示，边框区A22围设在第一区A1的外周侧，主要用于布置显示面板中的驱动电路。
在本申请实施例中，露出部21可以仅位于透光区A21内或仅位于边框区A22内，也可以同时位于透光区A21和边框区A22内。示例性地，露出部21同时位于透光区A21和边框区A22内，碳化部31与露出部21相对设置，同时碳化部31与光学功能层4能够对透光区A21和边框区A22内的露出部21均起到覆盖作用，从而进一步降低金属层2发生反光的风险。
在一些实施例中，如图1至图5所示，金属层2包括阵列金属层5和/或触控金属层6，露出部21包括第一露出部211和/或第二露出部212。
阵列金属层5主要用于驱动并控制显示面板发光，对于阵列金属层5而言，部分金属走线需要设置边框区A22内，以降低其对第一区A1的显示效果的影响。而触控金属层6主要用于实现显示面板的触控功能，由于加工精度的不足或实际设计需要，触控金属层6容易部分位于透光区A21内，比如在透光区A21内，围绕感光区设置不透光的触控金属环，从而出现反光问题。
需要说明的是，本申请实施例提到的第一露出部211可以指位于透光区A21内的触控金属层6的露出部，也可以指位于边框区A22内的触控金属层6的露出部，本申请实施例对此不作限制。可选地，第一露出部211位于透光区A21内，比如围绕感光区设置不透光的触控金属环。而本申请实施例提到的第二露出部212指的是位于边框区A22内的阵列金属层5的露出部。
本申请实施例利用光学功能层4以及碳化部31对位于透光区A21内的触控金属层6，和/或位于边框区A22内的阵列金属层5进行遮挡，从而降低金属层2发生反光问题的风险，提高显示面板的显示效果。
在一些实施例中，如图3所示，光学功能层4包括位于透光区A21内的第一通孔41，第一通孔41沿衬底1的厚度方向X贯穿光学功能层4。光学胶层3至少部分位于第一通孔41内，第一露出部211在衬底1的正投影至少部分位于第一通孔41在衬底1的正投影内。
光学功能层4沿厚度方向X贯穿形成第一通孔41，第一通孔41位于透光区A21内并填充有光学胶层3，第一通孔41的设置能够使环境光更容易地入射至感光元件中，从而提高显示面板的感光效果。
由前述内容可知，由于加工精度的不足或实际设计需要，触控金属层6容易部分位于透光区A21内。同样的，受限于加工精度的不足或实际设计需要，光学功能层4也可能部分位于透光区A21内，但是无法完全覆盖位于透光区A21内的第一露出部211，使得第一露出部211在衬底1的正投影至少部分位于第一通孔41在衬底1的正投影内。进一步地，环境光线可以通过第一通孔41照射至第一露出部211上，从而出现反光问题。
在此基础上，本申请实施例将碳化部31设置于第一通孔41内，由于碳化部31通过激光处理碳化形成，因此可以精确把控碳化部31的尺寸，使其在衬底1的正投影与第一露出部211在衬底1的正投至少部分交叠，从而能够减少反光问题的产生。
此外，由于光学功能层4在靠近第一通孔41附近处的边缘通常用于遮挡金属层2，而不用于起到光线调节作用，并且光学功能层4本身即有一定的遮光性。因此本申请实施例还将碳化部31与光学功能层4邻接设置，在碳化部31的形成过程中，即使光学功能层4的边缘受到加工过程的影响出现了结构上的改变，也不会对显示面板的显示效果，以及光学功能层4的光学调节作用产生影响。
因此本申请实施例将碳化部31与光学功能层4抵接设置，使得碳化部31与光学功能层4之间不会存在有空隙，进而使得光线不会从碳化部31与光学功能层4之间进入或离开显示面板。
在一些实施例中，请参阅图6，碳化部31在衬底1的正投影为环状结构，环状结构位于透光区A21 内，第一区A1环绕于环状结构的外周侧；和/或，环状结构位于边框区A22内并环绕显示区设置。其中，在图4中碳化部31以虚线形式表示。
碳化部31在衬底1的正投影为一个环状封闭结构，当碳化部31位于透光区A21内时，第一区A1位于碳化部31外周侧；当碳化部31位于边框区A22内，碳化部31位于第一区A1的外周侧。这种设计能够使得碳化部31更好地对露出部21起到遮挡作用，进一步降低反光问题发生的风险。
在一些可选实施例中，如图3和图6所示，碳化部31在衬底1的正投影环绕分布在第二通孔51在衬底1的正投影外周侧。这种设计令碳化部31位于感光区外侧，从而能够降低碳化部31对显示面板的显示效果的影响。
在一些实施例中，如图2至图5所示，光学胶层3还包括胶膜材料，碳化部31由胶膜材料碳化形成。碳化过程能够保证生成的碳化部31具有遮挡光线通过的效果，从而降低反光问题发生的概率。
在一些实施例中，碳化部31由胶膜材料激光碳化形成。
光学胶层3包括本体部32和碳化部31，本体部32为光学胶层3内部用于实现粘接作用的部分，胶膜材料用于形成本体部32。同时在本申请实施例中，碳化部31是由胶膜材料激光碳化形成，这种设计可以在不额外增加材料的同时，提高碳化部31的加工精度。可选地，胶膜材料包括液态光学胶(OCR，Optical Clear Resin)，碳化部31由固化后的液态光学胶激光碳化形成。
具体地说，在制备光学胶层3的过程中，首先通过涂布或贴附胶膜材料的方式形成初始膜层，然后对初始膜层的部分区域进行激光照射处理，从而形成碳化部31，而初始膜层中的其他部分则成为光学胶层3中的本体部32。
对于激光照射处理而言，通常需要采用高精度的拍照设备对需要碳化处理的部分进行定位，并将数据记录至激光设备中，然后激光设备对特定区域进行激光照射从而碳化形成碳化部31。因此激光处理能够确保对光学胶层3中特定区域的精确碳化处理，保证碳化部31的尺寸精度。
在本申请实施例中，碳化部31是由用于形成本体部32的胶膜材料碳化处理形成，因此无需额外增加其他材料，降低材料成本。并且这种处理还可以保证碳化部31的尺寸精度，确保碳化部31对金属层2的遮挡效果。
在一些实施例中，如图3所示，至少部分本体部32位于金属层2与碳化部31之间。
在本申请实施例中，碳化部31与金属层2在衬底1厚度方向X上至少通过本体部32实现分隔，这样可以避免在激光处理过程中，激光照射至金属层2上，对金属层2的结构产生破坏。
在一些实施例中，碳化部31在厚度方向X上的厚度为H，其中，0.01μm≤H≤5μm。
由前述内容可知，碳化部31通过激光碳化形成，碳化部31的厚度可以通过激光能量实现调节。其中，若碳化部31的厚度过薄，则容易导致碳化部31的遮挡效果不好；若碳化部31的厚度过厚，则需要 较大的激光能力制备形成，而较大的激光能量容易导致光学胶层3快速升温，从而出现点燃的风险。
因此本申请实施例控制碳化部31的厚度，使其不小于0.01μm，同时不大于5μm。在满足碳化部31遮光需要的同时，还能降低因激光能量过大，导致光学胶层3发生点燃的风险。
在一些实施例中，请参阅图7，显示面板还包括设置于光学功能层4背离衬底一侧的盖板7。
光学透明胶层除了能够将盖板7与显示面板中的其他膜层粘接固定外，还可以在一定程度上起到对环境光线或显示面板内部发出光线的调节作用。可选地，光学透明胶层覆盖碳化部31设置，从而使得光学胶层7能够对入射至碳化部31处的光线起到调节作用。
请参阅图8，本申请实施例提供了一种显示装置，包括前述任一实施方式中的显示面板。
需要说明的是，本申请实施例提供的显示装置，具有本申请实施例提供的显示面板的有益效果，具体可以参考上述各实施例对于显示面板的具体说明，本实施例在此不再赘述。
请参阅图9和图10a-10d，图9是本申请实施例提供的还一种显示面板的制备方法的流程图。本申请实施例提供了一种显示面板的制备方法，制备方法包括：
S100：在衬底一侧形成金属层，金属层包括露出部。
请参阅图10a，在步骤S100中，显示面板具有第一区A1和第二区A2，示例性地，第二区A2包括透光区和边框区。衬底1可以采用玻璃、聚酰亚胺(Polyimide，PI)等透光材料制成，金属层2位于衬底1的一侧，金属层2包括但不限于用于实现触控功能的触控金属层6和/或阵列金属层5等。
阵列金属层5主要用于驱动并控制显示面板发光，对于阵列金属层5而言，部分金属走线需要设置边框区内，以降低其对第一区A1的显示效果的影响。可选地，露出部21包括位于阵列金属层5上且位于边框区内的第二露出部212。
触控金属层6主要用于实现显示面板的触控功能，由于加工精度的不足或实际设计的需要，触控金属层6容易部分位于透光区内，从而出现反光问题。可选地，露出部21包括位于触控金属层6上且位于透光区内的第一露出部211。
S110：在金属层背离衬底的一侧设置光学功能层。
请参阅图10b，在步骤S110中，光学功能层4主要用于调节显示面板所发出的光线，提高显示面板的显示效果。其中，光学功能层4可以仅位于第一区A1内，也可以同时位于第一区A1和第二区A2内，本申请实施例对此不作限制。
S120：在金属层背离衬底的一侧形成预设胶层，预设胶层位于透光区和/或边框区内且与光学功能层邻接设置。
请参阅图10c，在步骤S120中，预设胶层3’位于金属层2背离衬底1的一侧，预设胶层3’能够用于实现相邻膜层之间的固定，以及在一定程度上起到对环境光线或显示面板内部发出光线的调节作用。
S130：在预设胶层内形成碳化部，光学功能层与碳化部在衬底的正投影覆盖露出部在衬底的正投影。
请参阅图10d，在步骤S130中，预设胶层中部分区域形成碳化部31，同时预设胶层转变为光学胶层3，可以理解的是，光学胶层3除了碳化部31外还包括本体部32。本申请实施例中的碳化部31无需额外占用其他膜层空间，避免增大显示面板的厚度尺寸。同时光学功能层4与碳化部31在衬底1的正投影覆盖露出部21，这样设计能够减少露出部21对环境光线的反射作用，降低反光问题出现的风险。
在一些实施例中，请参阅图11，图11是本申请实施例提供的还一种显示面板的制备方法的流程图。
步骤S130中包括：
S131：确定光学功能层和露出部的位置信息。
在步骤S131中，可以利用高精度摄像头实现对露出部的高精度定位，确保其获取得到的位置信息准确，然后可以将得到的位置信息传输至对应的激光设备中，以便后续进行激光碳化处理。
S132：根据位置信息对预设胶层背离衬底的一面进行激光处理，以使预设胶层中的部分胶膜材料碳化形成碳化部。
在步骤S132中，激光设备根据得到的位置信息，对预设胶层3’中的特定区域进行激光照射，使得部分胶膜材料碳化形成碳化部。本申请实施例中的激光处理还可以保证遮挡部的尺寸精度，确保遮挡部对金属层的遮挡效果。
在一些实施例中，在步骤S132中，激光能量不大于5W且激光波长不大于450nm。
碳化部通过激光碳化形成，碳化部的厚度可以通过激光能量实现调节。其中，若碳化部的厚度过薄，则容易导致碳化部的遮挡效果不好；若碳化部的厚度过厚，则需要较大的激光能力制备形成，而较大的激光能量容易导致光学胶层快速升温，从而出现点燃的风险。
因此本申请实施例通过控制激光能量以及激光波长，使得形成的碳化部不会过薄也不会厚。在满足碳化部遮挡功能的同时，还能降低因激光能量过大，导致光学胶层发生点燃的风险。
虽然本申请所公开的实施方式如上，但所述的内容只是为了便于理解本申请而采用的实施方式，并非用以限定本申请。任何本申请所属技术领域内的技术人员，在不脱离本申请所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本申请的保护范围，仍须以所附的权利要求书所界定的范围为准。
以上所述，仅为本申请的具体实施方式，所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的其他连接方式的替换等，可以参考前述方法实施例中的对应过程，在此不再赘述。应理解，本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本申请的保护范围之内。

Claims (10)

  1. 一种显示面板，，包括：
    衬底；
    金属层，设置于所述衬底的一侧；
    光学功能层，设置于所述金属层背离所述衬底的一侧；
    光学胶层，所述光学胶层包括碳化部；
    其中，所述光学功能层与所述碳化部在所述衬底的正投影覆盖所述金属层在所述衬底的正投影。
  2. 根据权利要求1所述的显示面板，其中，所述显示面板包括透光区和边框区，所述金属层包括露出部，所述光学胶层包括光学透明胶层和封装胶层，所述碳化部位于所述光学透明胶层或者所述封装胶层；
    其中，所述露出部和所述封装胶层位于所述透光区和/或所述边框区内，所述光学功能层与所述碳化部在所述衬底的正投影覆盖所述露出部在所述衬底的正投影；
    优选地，所述碳化部位于所述封装胶层，所述封装胶层和所述碳化部均与所述光学功能层邻接设置。
  3. 根据权利要求2所述的显示面板，其中，所述金属层包括阵列金属层和/或触控金属层，所述露出部包括第一露出部和/或第二露出部；
    其中，所述第一露出部是指所述触控金属层位于所述透光区和/或所述边框区内的部分；所述第二露出部是指所述阵列金属层位于所述边框区内的部分，所述光学功能层与所述碳化部在所述衬底的正投影覆盖所述第一露出部和/或所述第二露出部在所述衬底的正投影。
  4. 根据权利要求3所述的显示面板，其中，所述光学功能层包括位于所述透光区内的第一通孔，所述第一通孔沿所述衬底的厚度方向贯穿所述光学功能层；
    所述封装胶层至少部分位于所述第一通孔内，所述第一露出部在所述衬底的正投影至少部分位于所述第一通孔在所述衬底的正投影内。
  5. 根据权利要求2所述的显示面板，其中，所述碳化部在所述衬底的正投影为环状结构，所述环状结构位于所述透光区，和/或所述边框区内。
  6. 根据权利要求1所述的显示面板，其中，所述光学胶层包括胶膜材料，所述碳化部由部分所述胶膜材料碳化形成；
    优选地，所述碳化部由部分所述胶膜材料经激光碳化形成；
    优选地，所述碳化部在所述厚度方向上的厚度为H，其中，0.01μm≤H≤5μm。
  7. 根据权利要求1所述的显示面板，其中，还包括设置于所述光学胶层背离所述衬底一侧的盖板。
  8. 一种显示装置，其中，包括如权利要求1至7任一项所述的显示面板。
  9. 一种显示面板的制备方法，其中，所述制备方法包括：
    在衬底一侧形成金属层，所述金属层包括露出部；
    在所述金属层背离所述衬底一侧设置光学功能层；
    在所述金属层背离所述衬底的一侧形成预设胶层，所述预设胶层位于透光区和/或边框区内且与所述光学功能层邻接设置；
    在所述预设胶层内形成碳化部，所述光学功能层与所述碳化部在所述衬底的正投影覆盖所述露出部在所述衬底的正投影。
  10. 根据权利要求9所述的制备方法，其中，所述在所述预设胶层内形成碳化部，包括：
    确定所述光学功能层和所述露出部的位置信息；
    根据所述位置信息，对所述预设胶层背离所述衬底的一面进行激光处理，以使所述预设胶层中的部分胶膜材料碳化形成所述碳化部；
    优选地，在根据所述位置信息，对所述预设胶层背离所述衬底的一面进行激光处理中，激光能量不大于5W且激光波长不大于450nm。
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