CN111933675B - Display module, electronic equipment and preparation method of display module - Google Patents
Display module, electronic equipment and preparation method of display module Download PDFInfo
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- CN111933675B CN111933675B CN202010832022.XA CN202010832022A CN111933675B CN 111933675 B CN111933675 B CN 111933675B CN 202010832022 A CN202010832022 A CN 202010832022A CN 111933675 B CN111933675 B CN 111933675B
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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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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- 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
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- 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
- Y02E10/549—Organic PV cells
Abstract
The invention provides a display module, electronic equipment and a preparation method of the display module, wherein the display module comprises the following components: a first substrate assembly; the second substrate assembly is overlapped below the first substrate assembly, a gap is formed between the second substrate assembly and the first substrate assembly through support columns, a light hole for transmitting light is formed in one side, close to the gap, of the second substrate assembly, and the light hole penetrates through and extends to the surface, close to the first substrate assembly, of the second substrate assembly; the light blocking layer is arranged on the surface of one side of the second substrate assembly, which is close to the gap, and is arranged on the periphery of the light hole, the metal wiring of the second substrate assembly is positioned between the light blocking layer and the second substrate, and the projection of the part, which is arranged on the periphery of the light hole, of the metal wiring on the plane where the light blocking layer is positioned in the light blocking layer. The display module blocks ambient light from irradiating gaps between the metal wires through the light blocking layer positioned above the metal wires around the light holes to be diffracted and enter the camera, so that shooting stray light is reduced.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a display module. The application also relates to electronic equipment comprising the display module. The application also relates to a preparation method of the display module.
Background
The display screen of the electronic equipment is various, one of the display screens is called as a pole screen, the pole screen is a hole dug in the screen, namely a light hole for transmitting light is formed in the pole screen, no blocking exists at the position of the light hole between the first substrate and the second substrate of the pole screen, a metal wiring of the pole screen also winds around the light hole, and the light transmittance is high. The position of the pole screen below the light holes is provided with a camera, the area outside the light holes of the pole screen is a display area, and the pole screen has the advantages of high screen occupation ratio and attractive appearance.
The periphery of the light hole of the pole screen light emitting material layer is provided with a region which cannot emit light, namely a read space (Chinese is interpreted as an invalid region, and is called DS region for short). When the camera below the display screen shoots, light rays of an external point light source (such as a fluorescent lamp) can pass through the DS area to form a new light source, and the light rays enter the camera to cause shooting stray light to be displayed as a color circle.
In summary, how to reduce the stray light of shooting caused by the light hole of the display screen becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
Accordingly, an objective of the present invention is to provide a display module for reducing the stray light of the display caused by the light holes.
Another object of the present invention is to provide an electronic device including the display module, so as to reduce the stray light of shooting caused by the light hole of the display screen.
Still another object of the present invention is to provide a method for manufacturing a display module, which is used for manufacturing a display module capable of reducing photographing stray light.
In order to achieve the above purpose, the present application provides the following technical solutions:
a display module, comprising:
a first substrate assembly;
the second substrate assembly is stacked below the first substrate assembly, a gap is formed between the second substrate assembly and the first substrate assembly through support columns, a light hole for transmitting light is formed in one side, close to the gap, of the second substrate assembly, and one end of the light hole penetrates through and extends to the surface, close to the first substrate assembly, of the second substrate assembly;
the light blocking layer is arranged on one side surface of the second substrate assembly, which is close to the gap, the light blocking layer is arranged on the periphery of the light hole, the metal wiring of the second substrate assembly is positioned between the light blocking layer and the second substrate, and the projection of the part of the metal wiring, which is arranged on the periphery of the light hole, on the plane where the light blocking layer is positioned in the light blocking layer.
Optionally, in the above display module, the second substrate assembly has a light emitting material layer located between the light blocking layer and the metal trace, an area of the light emitting material layer located at a periphery of the light transmitting hole is an ineffective area that does not emit light, and a projection of the ineffective area on a plane where the light blocking layer is located in the light blocking layer.
Optionally, in the above display module, the height of the support column located in the area where the light blocking layer is located is equal to the height of the support column located in the area outside the light blocking layer, and the lower ends of the support columns are all in supporting contact with a surface of the cathode layer of the second substrate assembly, which is close to the gap.
Optionally, in the above display module, the color of the light blocking layer is the same as the color of the polarizer of the display module.
Optionally, in the display module, the light blocking layer is black.
Optionally, in the display module, the light blocking layer is made of an organic photoresist material.
Optionally, in the display module, the thickness of the light blocking layer is a micrometer-scale thickness.
Optionally, in the above display module, the first substrate assembly includes a first substrate, a polarizer is sandwiched between a glass cover plate of the display module and the first substrate, a through hole is formed in a position of the polarizer corresponding to the light hole, the aperture of the through hole is larger than that of the light hole, and an inner edge of the through hole is located in a projection of the light blocking layer on a plane where the polarizer is located.
Optionally, in the above display module, the display module further includes a second light blocking layer, where the second light blocking layer is disposed on a surface of one side of the second substrate assembly, which is close to the gap, and covers a portion of the second substrate assembly, where the portion is not a pixel light emitting region, in a display area of the second substrate assembly, and the display area is located at a periphery of the light blocking layer.
The application also provides electronic equipment, including body, display module assembly and camera module, display module assembly with camera module set up in the body, just display module assembly is for the display module assembly of any one of the above, camera module assembly is located the below of the lower base plate of display module assembly corresponds display module assembly's light trap's position.
The application also provides a preparation method of the display module, which comprises the following steps:
s100, coating a light blocking material on the upper surface of a cathode layer of a second substrate assembly with light holes;
s200, removing a part of the light blocking material corresponding to a display area of the display module, a part of the light transmitting hole and a part of the support column station point corresponding to an ineffective area of the display module, which does not emit light, to obtain a light blocking layer;
s300, manufacturing a support column in a support column station site;
s400, sequentially paving the first substrate assembly, the polaroid and the glass cover plate above the support columns from bottom to top, and supporting and contacting the lower surface of the first substrate assembly with the upper ends of the support columns.
Compared with the prior art, the beneficial effects of this application are:
the display module comprises a first substrate assembly, a second substrate assembly and a light blocking layer; the second substrate assembly is stacked below the first substrate assembly, a gap is formed between the second substrate assembly and the first substrate assembly through support columns, a light hole for transmitting light is formed in one side, close to the gap, of the second substrate assembly, and one end of the light hole penetrates through and extends to the surface, close to the first substrate assembly, of the second substrate assembly; the light blocking layer is arranged on one side surface of the second substrate assembly, which is close to the gap, the light blocking layer is arranged on the periphery of the light hole, the metal wiring of the second substrate assembly is positioned between the light blocking layer and the second substrate, wherein the projection of the part, which is arranged on the periphery of the light hole, of the metal wiring on the plane where the light blocking layer is positioned in the light blocking layer, and the light blocking layer is used for blocking light rays from passing through.
The light blocking layer of the display module is arranged on one side surface of the second substrate assembly, which is close to the gap, and surrounds the periphery of the light hole, the projection of the part, which is arranged on the periphery of the light hole, of the metal wiring on the plane where the light blocking layer is located in the light blocking layer, so that external ambient light enters the gap through the position, which corresponds to the light hole, of the first substrate assembly, and the light is blocked by the light blocking layer located above the metal wiring on the periphery of the light hole, so that the light cannot be irradiated into the gap between the metal wirings which are arranged in a fence shape to be diffracted to enter the camera, and shooting stray light is reduced.
The application provides an electronic equipment has adopted the display module among the application, when the module of making a video recording shoots, the display module can block that ambient light passes the peripheral gap formation diffraction light of metal wiring of light trap, subdues the parasitic light that diffraction light formed to shooting, improves shooting quality. Meanwhile, the display module can reduce the colored light reflected by the metal wiring, and improve the appearance of the electronic equipment.
The display module assembly preparation method that this application provided can prepare the display module assembly that has the light blocking layer in this application to blockked the position that the metal walked to the ambient light, avoided ambient light to pass the gap that the metal walked the line and formed the diffraction light, also can not form the reflection light at the surface that the metal walked the line, reduced and shot stray light.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic front view of a display module according to an embodiment of the present application;
fig. 2 is a schematic cross-sectional view of a light hole of a display module according to an embodiment of the disclosure;
FIG. 3 is a schematic diagram illustrating a manufacturing process of a light blocking layer of a display module according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating a manufacturing process of a support column of a display module according to an embodiment of the disclosure;
fig. 5 is an enlarged schematic view of a light hole of a display module according to an embodiment of the present application, which does not include a polarizer;
fig. 6 is a schematic layout diagram of metal traces around the light holes in fig. 2.
Wherein 1 is a first substrate component, 2 is a second substrate component, 3 is a display area, 4 is a light hole, 5 is a polaroid, 6 is a glass cover plate, 7 is an OCA adhesive layer, 8 is a support column, and 9 is an OCR adhesive layer;
21 is a cathode layer, 22 is a luminescent material layer, 221 is a DS area, 23 is an organic film layer, 24 is an inorganic film layer, 241 is a metal trace, 2411 is a slit, 25 is a buffer layer, 26 is a second substrate, 27 is a light blocking layer, 271 is a support post station site.
Detailed Description
The core of the application is to provide a display module assembly, can subdue the shooting stray light that the light trap position of display screen caused.
The application also provides electronic equipment comprising the display module, which can reduce shooting stray light caused by a light hole part of a display screen.
The application also provides a preparation method of the display module for preparing the display module, which can prepare the display module capable of reducing shooting stray light.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1 and 2, a display module is provided in an embodiment of the present application, which includes a first substrate assembly 1, a second substrate assembly 2, and a light blocking layer 27; wherein, the second substrate assembly 2 is stacked under the first substrate assembly 1, and a gap is formed between the second substrate assembly 2 and the first substrate assembly 1 through the support columns 8; the second substrate assembly 2 mainly comprises a second substrate 26, a buffer layer 25, an inorganic film layer 24, an organic film layer 23, a luminescent material layer 22 and a cathode layer 21 which are sequentially stacked from bottom to top, wherein the cathode layer 21 is provided with a cathode, the organic film layer 23 is covered above the inorganic film layer 24 and is used for forming a flat layer, the organic film layer 23 is provided with a conducting hole, the inorganic film layer 24 comprises a metal circuit and an insulating layer and is provided with an anode, a metal wire 241 is arranged in the inorganic film layer 24, and the luminescent material layer 22 between the cathode layer 21 and the inorganic film layer 24 can emit light after the anode in the inorganic film layer 24 and the cathode in the cathode layer 21 are electrically conducted through the conducting hole; a light hole 4 for transmitting light is arranged on one side, close to the gap, of the second substrate assembly 2, the light hole 4 penetrates through the cathode layer 21, the luminescent material layer 22, the organic film layer 23, the inorganic film layer 24 and the buffer layer 25, the upper end of the light hole 4 is communicated with the gap, and the lower end of the light hole 4 penetrates through and extends to one side surface, close to the first substrate assembly 1, of the second substrate 26, so that no blocking exists between the positions, corresponding to the light hole, of the second substrate 26 and the first substrate assembly 1, and the light transmittance is improved; the portion of the light emitting material layer 22 located at the periphery of the light transmitting hole 4 does not emit light, which is called a read space region (chinese is interpreted as an ineffective region, abbreviated as DS region 221), and ambient light can be irradiated to the underlying metal wire 241 through the DS region 221; the light blocking layer 27 is disposed on a side surface of the second substrate assembly 2 near the gap, that is, the light blocking layer 27 is disposed on a side surface of the cathode layer 21 near the gap, and the light blocking layer 27 is disposed on a periphery of the light hole 4, where the light blocking layer 27 is used for blocking light passing through, and a projection of a portion of the metal trace 241 disposed on the periphery of the light hole 4 on a plane where the light blocking layer 27 is located in the light blocking layer 27. Because of the existence of the light holes 4, when the metal wires 241 in the inorganic film layer 24 pass through the light holes 4, the metal wires 241 bypass from the periphery of the light holes 4, the metal wires 241 are non-transparent micron-sized metal wires, and the gaps 171 between the metal wires 241 are also micron-sized, so that a fence shape is formed, and as shown in fig. 2 and 6, the light blocking layer 27 can shield the metal wires 241 arranged at the periphery of the light holes 4 from above. The display module is located the position setting camera of light trap 4 below, and the display area 3 of display module is located the periphery of light blocking layer 27.
Because the light blocking layer 27 of the display module is disposed on the upper surface of the cathode layer 21 and surrounds the periphery of the light holes 4, the projection of the portion of the metal wires 241 disposed on the periphery of the light holes 4 on the plane of the light blocking layer 27 is located in the light blocking layer 27, and the light blocking layer 27 is located above the metal wires 241, so that external ambient light enters the gap through the position of the first substrate assembly 1 corresponding to the light holes 4, and is blocked by the light blocking layer 27, and therefore, the light cannot irradiate the gaps 2411 between the metal wires 241 on the periphery of the light holes 4 to form diffraction light to enter the camera, i.e. the path of the ambient light irradiating the positions of the metal wires 241 on the periphery of the light holes 4 is cut off, thereby reducing shooting stray light.
In addition, in the prior art, as shown in fig. 6, external ambient light irradiates the surface of the metal trace 241 around the light hole 4 to form colored reflected light, and the colored light is emitted from the top of the display screen to affect the display effect of the display screen, so that the conventional pole screen is located on the upper surface of the first substrate assembly 1 and corresponds to the light hole 4, and a touch metal layer with a through hole is disposed around the light hole 4, and the through hole corresponds to the light hole 4, and the colored light reflected by the metal trace 241 of the second substrate assembly 2 is blocked by the touch metal layer. After the polarizer 5 is attached to the first substrate assembly 1, the through hole of the polarizer 5 is larger than the through hole of the touch metal layer, the area of the touch metal layer, which is not attached to the polarizer 5, is annular, bright silver is displayed, and the area covered by the polarizer 5 is black. In general, errors exist in attaching the polarizer 5, and when the polarizer 5 is attached, the ring which is not covered by the polarizer 5 is a ring with non-uniform width, commonly called uneven silver edge, so as to influence the appearance effect of the display screen.
The light blocking layer 27 of the display module in the application cuts off the path of the ambient light irradiating the metal trace 241 around the light transmitting hole 4, so that the problem that the ambient light irradiates the surface of the metal trace 241 to form reflected light in the prior art can not occur, and meanwhile, the light blocking layer 9 can also reduce the reflected light of the cathode layer 21 due to the arrangement of the light blocking layer 27 on the upper surface of the cathode layer 21. Therefore, the touch metal layer does not need to be arranged on the upper surface of the first substrate assembly 1 to block the reflected light, and the problem that the appearance of the display screen is affected due to uneven silver edges at the positions of the light holes caused by the offset of the polarizer 5 is avoided.
The first substrate assembly 1 in this embodiment includes a first substrate, which is a glass substrate, as a packaging layer for packaging the second substrate assembly 2; the second substrate assembly 2 is an LTPS substrate (LTPS english acronym Low Temperature Poly Silicon, chinese expressed as low temperature polysilicon),the second substrate 26 is a glass substrate, and the buffer layer 25 is made of SiO 2 The inorganic film layer 24 includes low temperature polysilicon, a metal layer, source and Drain electrodes, and an insulating layer between the metal wiring layers. The structures of the first substrate assembly 1 and the second substrate assembly 2 described in the present embodiment are existing structures, and are not improvement points of the present application, and are not described herein.
Further, in the present embodiment, the portion of the light emitting material layer 22 located at the periphery of the light transmitting hole 4 is a non-light emitting area, which is called a Dead space area (hereinafter referred to as an ineffective area, abbreviated as DS area 221), and ambient light can be irradiated to the metal trace 241 below through the DS area 221, so that the projection of the ineffective area 221 on the plane of the light blocking layer 27 is located in the light blocking layer 27, that is, the size of the area of the light blocking layer 27 is greater than or equal to the size of the ineffective area of the light emitting material layer 22 located at the periphery of the light transmitting hole 4, that is, the size of the area of the light blocking layer 27 is greater than or equal to the size of the DS area 221, so that the light blocking layer 27 completely blocks the DS area 221, and ambient light is prevented from being transmitted from the DS area 221 to the position of the metal trace 241 below.
As shown in fig. 3 and 4, in the present embodiment, the height of the support columns 8 located in the region where the light blocking layer 27 is located is equal to the height of the support columns 8 located in the region outside the light blocking layer 27, and the lower ends of the support columns 8 are each in contact with one side surface of the cathode layer 21 of the second substrate assembly 2 close to the gap. I.e. the lower ends of the support posts 8 in the area of the light-blocking layer 27 are embedded in the light-blocking layer 27 and are in supporting contact with the upper surface of the cathode layer 21 directly below the light-blocking layer 27. So arranged, the plurality of support columns 8 can smoothly support the first substrate assembly 1. The arrangement of the support columns 8 in the area of the light blocking layer 27 may be circumferentially arranged around the light holes 4, or may be other arrangements, where the support column station sites 271 are planned in advance on the cathode layer 21, and the support columns 8 are disposed on each support column station site 271.
The support columns 8 are Photo space, PS columns for short, and the PS columns are made of transparent materials, so that display of the display module is not affected.
Further, in the present embodiment, the color of the light blocking layer 27 is the same as or similar to the color of the polarizer 5 of the display module. So set up, observe the light trap position of display module assembly from outside, the position that the through-hole of light blocking layer 27 exposure polaroid 5 is annular, because light blocking layer 27 is the same or close with the colour of polaroid 5, therefore light blocking layer 27 and polaroid 5 are an entity in the outward appearance to the outward appearance has been improved.
Further, in the present embodiment, the color of the light blocking layer 27 is black, and in general, the color of the polarizer 5 is black, so that the color of the light blocking layer 27 is set to be black, and the blocking effect of the black light blocking layer 27 on light is better, stray light is further reduced, the reflection capability is weak, and the light reflected from the light holes is reduced. The light hole is black due to the background, and the black light blocking layer 27 can be better integrated with the background, so that the appearance is further improved. Of course, the light blocking layer 27 may be of other colors as long as it can block light.
In this embodiment, the material of the light blocking layer 27 is an organic photoresist material, specifically, an organic material such as perfluorooctyl methacrylate or decyl methacrylate. Preferably, a black dye is added to the organic photoresist material to form a black light blocking layer 27. Of course, the light blocking layer 27 may be made of other materials having the function of blocking light.
Preferably, the thickness of the light blocking layer 27 is in the order of micrometers, so that space occupation is reduced.
As shown in fig. 4, the display module is further described in this embodiment, the first substrate assembly 1 includes a first substrate, a polarizer 5 is sandwiched between a glass cover plate 6 of the display module and the first substrate, a through hole is formed at a position of the polarizer 5 corresponding to the light hole 4, the aperture of the through hole is larger than that of the light hole 4, and an inner edge of the through hole is located in a projection of the light blocking layer 27 in a plane where the polarizer 5 is located. Therefore, the polaroid 5 can carry out polarized light filtering on all the display areas 3 of the display module, can not block incident light rays of the light holes 4, and ensures enough light entering quantity of the light holes 4.
Specifically, the glass cover plate 6 and the polaroid 5 are fixedly bonded through the OCA adhesive layer 7, the OCA adhesive layer 7 is made of OCA optical adhesive, and the glass cover plate is colorless and transparent after solidification, and has high light transmittance without affecting the display effect. The through holes of the polaroid 5 are filled with OCR optical cement to form OCR glue layers 9, the OCR optical cement is colorless and transparent, the light transmittance is higher, and the light transmittance of the light holes 4 is further improved.
In this embodiment, the display module further includes a second light blocking layer, where the second light blocking layer is disposed on a side surface of the second substrate assembly 2 near the gap, that is, on the upper surface of the cathode layer 21, and covers a portion of the display area 3 of the second substrate assembly 2, where the non-pixel light emitting area is not located, and the display area 3 is located at the periphery of the light blocking layer 27, and correspondingly, a portion of the display area 3, where the non-pixel light emitting area is located at the periphery of the light blocking layer 27, where the non-pixel light emitting area is different from the ineffective area, and the ineffective area does not belong to the display area 3. The second light blocking layer has the same performance as the light blocking layer 27, and can reduce the reflection degree of the cathode layer 21, greatly improve the contrast ratio of the display area 3, and even achieve the purpose of saving the polarizer 5.
Based on the display module assembly described in any of the above embodiments, the embodiment of the application further provides an electronic device, which comprises a body, a display module assembly and a camera module, wherein, the display module assembly and the camera module assembly are arranged on the body, in particular, the body is of a plate-shaped structure, the display module assembly is arranged on one side or two side plate surfaces of the body, the camera module assembly is arranged in the body, wherein, the display module assembly is the display module assembly described in any of the above embodiments, in the thickness direction of the body, the camera module assembly is positioned below the second substrate 26 of the display module assembly and corresponds to the position of the light hole, the optical orientation of the camera module assembly points to the light hole 4, and external light enters the camera module assembly through the light hole 4.
Because the electronic equipment in this application has adopted the display module among this application, consequently, when the module of making a video recording shoots, the display module can block that ambient light from passing the gap 171 of the peripheral metal wiring 241 of light trap 4 and forming the diffraction light, subdue the parasitic light that the diffraction light formed to shooting, improves the shooting quality. Meanwhile, the display module can reduce the colored light reflected by the metal wire 241, and improve the appearance of the electronic equipment.
In this embodiment, the electronic device may be an electronic device with a display screen, such as a mobile phone, a tablet computer, a notebook computer, or the like. The pole screen manufactured by the display module can be an AMOLED hard screen pole screen, AMOLED is a shorthand of Active-matrix organic light emitting diode, and Chinese is fully called: an active matrix organic light emitting diode or an active matrix organic light emitting diode. Of course, it can be applied to other pole screens.
Based on the display module described in any one of the above embodiments, the embodiment of the present application further provides a method for preparing a display module, which is used for preparing the display module in the present application, and the steps include:
step S100, coating a light blocking material on the upper surface of the cathode layer 21 of the second substrate assembly 2 with the light holes 4, wherein the light blocking material covers the whole upper surface of the second substrate assembly 2;
step S200, as shown in fig. 3 and fig. 5, removing the portion of the light blocking material corresponding to the display area 3 of the display module, the portion corresponding to the light hole 4, and the portion corresponding to the support post standing point located in the non-light-emitting inactive area (i.e. DS area 221) of the display module, to obtain a light blocking layer 27; at this time, the light blocking layer 27 covers only the upper surface of the cathode layer 21 located at the periphery of the light hole 4, preferably covers the upper side of the DS area 221, and leaves the support post standing point 271 of the area where the light blocking layer 27 is located;
step S300, as shown in FIG. 4, a support column 8 is manufactured in the support column station 271, the heights of the support columns 8 are uniform, and the upper ends of the support columns 8 are all located on the same plane;
step S400, as shown in fig. 2, is to sequentially lay the first substrate assembly 1, the polarizer 5 and the glass cover plate 6 above the support column 8 from bottom to top, and the lower surface of the first substrate assembly 1 contacts with the upper end of the support column 8, wherein the light holes of the polarizer 5 are filled with OCR optical adhesive to form OCR adhesive layers 9, and the OCA adhesive layers 7 are coated between the polarizer 5 and the glass cover plate 6 to be adhered and fixed, thereby obtaining the display module in the application.
The display module with the light blocking layer 27 can be prepared by the preparation method of the display module, so that the position of the metal wire 241 irradiated by ambient light is blocked, diffraction light is prevented from being formed by the ambient light passing through the gap 171 of the metal wire 241, reflected light is not formed on the surface of the metal wire 241, and shooting stray light is reduced.
Further, in the present embodiment, the step of preparing the cathode layer 21 in the upper base member is further included:
step S001, manufacturing a buffer layer 25 on the second substrate 26;
step S002, manufacturing a metal circuit and an insulating layer on the buffer layer 25 to form an inorganic film layer 24;
step S003, an organic film layer 23 is manufactured on the inorganic film layer 24, the organic film layer 23 is a flat layer, a non-through via hole area of the organic film layer 23 is covered by a photomask, and a through via hole of the organic film layer 23 is etched;
step S004, etching the parts of the organic film layer 23, the inorganic film layer 24 and the buffer layer 25 corresponding to the light holes 4 by using a photomask process to obtain the light holes 4;
step S005, manufacturing a luminescent material layer 22 on the organic film layer 23, wherein the luminescent material layer 22 is also covered at the position of the light holes 4, and removing the luminescent material layer 22 at the position of the light holes 4 by laser;
in step S006, a cathode layer 21 is formed on the light-emitting material layer 22, and at this time, the light-transmitting hole positions are covered with the cathode layer 21, and the cathode layer 21 with the light-transmitting holes 4 is obtained by removing the cathode layer 21 at the light-transmitting hole positions by laser, and then the process proceeds to step S100.
Further, in the present embodiment, in step S200, the portion of the light blocking material corresponding to the display area 3 of the display module, the portion corresponding to the light hole 4, and the portion corresponding to the support post standing point 271 located in the non-light-emitting inactive area (i.e. the DS area 221) of the display module are specifically removed through exposure, development, and etching processes, so as to obtain the light blocking layer 27.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A display module, comprising:
a first substrate assembly (1);
the second substrate assembly (2) is stacked below the first substrate assembly (1), a gap is formed between the second substrate assembly (2) and the first substrate assembly (1) through supporting columns (8), a light hole (4) for transmitting light is formed in one side, close to the gap, of the second substrate assembly (2), one end of the light hole (4) penetrates through and extends to the surface, close to the first substrate assembly (1), of a second substrate (26) of the second substrate assembly (2);
the light blocking layer (27) is arranged on one side surface, close to the gap, of the second substrate assembly (2), the light blocking layer (27) is arranged on the periphery of the light hole (4), the metal wiring (241) of the second substrate assembly (2) is located between the light blocking layer (27) and the second substrate (26), and the projection of the part, which is arranged on the periphery of the light hole (4), of the plane where the light blocking layer (27) is located in the light blocking layer (27).
2. The display module according to claim 1, wherein the second substrate assembly (2) has a luminescent material layer (22) located between the light blocking layer (27) and the metal trace (241), and a region of the luminescent material layer (22) located at the periphery of the light transmitting hole (4) is an ineffective region that does not emit light, and a projection of the ineffective region on a plane of the light blocking layer (27) is located in the light blocking layer (27).
3. A display module according to claim 1, wherein the height of the support columns (8) located in the area of the light blocking layer (27) is equal to the height of the support columns (8) located in the area outside the light blocking layer (27), and the lower ends of the support columns (8) are in supporting contact with the surface of the cathode layer (21) of the second substrate assembly (2) on the side close to the gap.
4. A display module according to claim 1, characterized in that the color of the light blocking layer (27) is the same as the color of the polarizer (5) of the display module.
5. A display module according to claim 4, wherein the light blocking layer (27) is black in color.
6. A display module according to claim 1, wherein the light blocking layer (27) is made of an organic photoresist material.
7. The display module according to claim 1, wherein the first substrate assembly (1) comprises a first substrate, a polarizer (5) is sandwiched between a glass cover plate (6) of the display module and the first substrate, a through hole is formed in a position of the polarizer (5) corresponding to the light transmission hole (4), the aperture of the through hole is larger than that of the light transmission hole (4), and an inner edge of the through hole is located in the projection of the light blocking layer (27) on the plane where the polarizer (5) is located.
8. The display module according to claim 1, further comprising a second light blocking layer, wherein the second light blocking layer is disposed on a surface of the second substrate assembly (2) near the gap and covers a portion of a non-pixel light emitting area in a display area (3) of the second substrate assembly (2), and the display area (3) is located at a periphery of the light blocking layer (27).
9. An electronic device comprising a body, a display module and a camera module, wherein the display module and the camera module are arranged on the body, the display module is a display module according to any one of claims 1-8, and the camera module is located below a second substrate (26) of the display module and corresponds to a position of a light hole (4) of the display module.
10. The preparation method of the display module is characterized by comprising the following steps:
s100, coating a light blocking material on the upper surface of a cathode layer (21) of a second substrate assembly (2) with light holes (4);
s200, removing a part of the light blocking material corresponding to a display area (3) of the display module, a part of the light transmitting hole (4) and a part of the support column station point (271) in an ineffective area of the display module, which is not luminous, to obtain a light blocking layer (27);
s300, manufacturing a support column (8) in a support column station point (271);
s400, sequentially paving the first substrate assembly (1), the polaroid (5) and the glass cover plate (6) above the support column (8) from bottom to top, and supporting and contacting the lower surface of the first substrate assembly (1) with the upper end of the support column (8).
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