CN113160714A - Spliced screen and preparation method thereof - Google Patents
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- CN113160714A CN113160714A CN202110438066.9A CN202110438066A CN113160714A CN 113160714 A CN113160714 A CN 113160714A CN 202110438066 A CN202110438066 A CN 202110438066A CN 113160714 A CN113160714 A CN 113160714A
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- G—PHYSICS
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- 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
- G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
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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
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Abstract
The embodiment of the invention discloses a spliced screen and a preparation method thereof. In one embodiment, the tiled screen includes a plurality of display modules, wherein each display module includes a support member and a display panel disposed on the support member; the display panel comprises a plane display area, a bent display area which is arranged on one side of the plane display area and bent towards the side of the supporting piece, and a bonding area which is arranged on one side of the bent display area, is far away from the plane display area, and is bent to one side of the supporting piece, which is back to the display panel; in one direction, a plurality of display module assembly include the relative display module assembly that sets up in the display area of buckling, the relative display area that buckles that sets up forms the concatenation region. The spliced screen of the embodiment can effectively weaken the splicing effect of the spliced screen, and optimize the picture display effect of the spliced screen, so that a user can not see splicing traces in the visual effect.
Description
Technical Field
The invention relates to the technical field of display. And more particularly, to a tiled display and a method of making the same.
Background
With the development of the electronic industry, the demand of various super-large-sized display devices is increasing day by day, and the application of the super-large-sized display devices in various scenes (such as large-scale scenes in studios, stages, meeting rooms, hospitals, markets and the like) is also becoming more and more extensive, so that the splicing display devices are also gaining more and more attention. The splicing display device can splice a plurality of display screens to form an oversized splicing screen for picture display according to actual display requirements, and has the advantages of clear picture display, high flexibility and the like.
Currently, due to the requirements of the driving circuit and the production process, the existing display screen is provided with a non-display area at the periphery of the display area for connecting the driving circuit and the like. When a plurality of existing display screens are spliced to form a spliced screen, the non-display areas of the adjacent display screens form a larger splicing space, so that the visual split feeling is caused, the continuity and the integrity of the display pictures of the spliced screen are damaged, and the display effect of the spliced screen is reduced.
Disclosure of Invention
The invention aims to provide a spliced screen and a preparation method thereof, and aims to solve at least one of the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a spliced screen, which comprises a plurality of display modules,
the display module comprises a support piece and a display panel arranged on the support piece;
the display panel comprises a plane display area, a bent display area which is arranged on one side of the plane display area and bent towards the side of the supporting piece, and a bonding area which is arranged on one side of the bent display area, is far away from the plane display area, and is bent to one side of the supporting piece, which is back to the display panel;
in one direction, a plurality of display module assembly include the relative display module assembly that sets up in the display area of buckling, the relative display area that buckles that sets up forms the concatenation region.
According to the spliced screen provided by the first aspect of the invention, the display modules are arranged in the bent display areas, so that the width of the non-display area of the display panel at the splicing position of the display panel corresponding to the display panel can be effectively reduced, namely, the splicing distance is shortened, the splicing effect of the spliced screen is weakened, and the picture display effect of the spliced screen is optimized; simultaneously, bonding region buckles to support piece's display panel one side dorsad, can reduce the concatenation interval between the adjacent display panel, guarantees the less demand in concatenation clearance between the adjacent display panel.
Optionally, the spliced screen comprises at least one spliced unit, and the spliced unit comprises two display modules and cover plates arranged on the two display modules.
By adopting the optional mode, the splicing space can be shortened, the splicing effect of the spliced screen can be weakened, and in addition, the advantages of reducing the process cost and the like can be realized.
Optionally, the bonding area includes a bent bonding area and a planar bonding area disposed on a side of the supporting member facing away from the display panel.
Optionally, the display module further includes a polarizer disposed on the side of the planar display area and the bending display area opposite to the support.
In this alternative, the neutral layer can be adjusted while realizing the antireflection by arranging the polarizer, so that the bending radius of the bent display area can be further reduced, or the bending radius of the bent display area can be smaller.
Optionally, the display module further includes a polarizer disposed on a side of the support member facing away from the portion of the flat display area, the bending display area, and the bending bonding area close to the bending display area.
This optional mode can adjust neutral layer when realizing antireflection through setting up the polaroid for the radius of curvature that the part of buckling display area and buckling bonding district that is close to the display area that buckles was buckled can further reduce, perhaps says so, can realize that the radius of buckling of the part of buckling display area and buckling bonding district that is close to the display area that buckles is littleer.
Optionally, the modulus of the adhesive material of the polarizer is greater than 100KPa and less than 500 KPa.
The optional mode can ensure that the bending area of the display panel adopts the stress of small-radius bending, and simultaneously avoid the damage of the polaroid caused by overlarge stress.
Optionally, the display module further comprises a back film disposed between the support member and the flat display area.
By adopting the optional mode, when the performances such as moisture resistance and heat resistance are provided for the display panel, the bonding precision of the subsequent process is influenced by the wrinkles generated in the bonding area caused by the back film can be avoided, and the narrow frame of the display module can be easily bent in the bending area of the display panel.
Optionally, the radius of curvature of the bending display area is less than 2.5 mm.
Optionally, the support is made of metal.
The second aspect of the present invention provides a method for preparing a spliced screen, including:
form display panel on support piece, will display panel's the display area of buckling to support piece lateral buckling and make display panel's bonding district buckle extremely support piece's the dorsad display panel one side to form a plurality of display module assembly in a direction and include the relative display module assembly that sets up in the display area of buckling, make the relative display area of buckling that sets up forms the concatenation region.
The invention has the following beneficial effects:
according to the technical scheme, the display module with the bent display area arranged oppositely can effectively reduce the width of the non-display area of the display panel at the splicing position of the display panel corresponding to the display panel, namely, the splicing distance is shortened, the splicing effect of the spliced screen is weakened, and the picture display effect of the spliced screen is optimized; simultaneously, bonding region buckles to support piece's display panel one side dorsad, can reduce the concatenation interval between the adjacent display panel, guarantees the less demand in concatenation clearance between the adjacent display panel. In addition, the technical scheme of the invention has the advantages of simple structure, easiness in implementation, lower manufacturing cost and the like, and can improve the display effect with high cost performance.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a cross-sectional view of a structure of a tiled screen provided by an embodiment of the present invention.
Fig. 2 shows a top view of a structure of a tiled screen provided by an embodiment of the present invention.
Fig. 3 is a structural diagram of a display module in a tiled display according to an embodiment of the present invention.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is further noted that, in the description of the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the present invention, unless otherwise specified, the term "disposed on the same layer" is used to mean that two layers, components, members, elements or portions may be formed by the same manufacturing process (e.g., patterning process, etc.), and the two layers, components, members, elements or portions are generally formed of the same material. For example, two or more functional layers are arranged in the same layer, which means that the functional layers arranged in the same layer can be formed by using the same material layer and using the same manufacturing process, so that the manufacturing process of the display substrate can be simplified.
In the present invention, unless otherwise specified, the expression "patterning process" generally includes steps of coating of a photoresist, exposure, development, etching, stripping of the photoresist, and the like. The expression "one-time patterning process" means a process of forming a patterned layer, member, or the like using one mask plate.
It should be noted that, a splicing distance (i.e., a width of a non-display area at a splicing position of an adjacent display screen) in the spliced screen in the prior art is larger than a distance between adjacent pixel units in a display panel of the spliced screen, and the splicing distance is still visible to naked eyes, so that when a user watches the spliced screen, a splicing effect exists in a visual sense, a visual splitting feeling is caused, and viewing experience is influenced.
To solve the above technical problem, an embodiment of the present invention provides a tiled screen 100, as shown in fig. 1 to 3, wherein the tiled screen 100 includes a plurality of display modules 110. In one specific example, as shown in fig. 1 and 2, for example, the tiled screen 100 includes two display modules 110. In one specific example, the tiled screen 100 can be an OLED tiled screen, i.e., the display module 110 is an OLED display module. For example, the tiled display 100 can be applied to tiled display devices in large-scale application scenes such as studios, stages, meeting rooms, hospitals, and malls.
In this embodiment, as shown in fig. 1-3, the display module 110 includes a support 111 and a display panel 112 disposed on the support;
the display panel 112 includes a flat display region 1121, a bending display region 1122 disposed on one side of the flat display region 1121 and bending toward the support 111, and a bonding region 1123 disposed on one side of the bending display region 1122 away from the flat display region 1121 and bending to the side of the support 111 opposite to the display panel 112;
in one direction, the plurality of display modules 110 include the display modules 110 with the bent display regions 1122 being arranged relatively, the bent display regions 1122 being arranged relatively form a splicing region, for example, the bent display regions 1122 arranged relatively of the left and right display modules 110 shown in fig. 1 form a splicing region.
In the tiled screen 100 provided in this embodiment, by setting the display module 110 in which the bent display region 1122 is arranged relatively, the width of the non-display region of the display panel 112 at the tiled position with the display panel 112 corresponding to the display panel can be effectively reduced, that is, the tiled distance is shortened, the tiled effect of the tiled screen is weakened, and the picture display effect of the tiled screen is optimized; meanwhile, the bonding area 1123 is bent to the side of the support member 111 facing away from the display panel 112, so that the splicing distance between the adjacent display panels 112 can be reduced, and the requirement that the splicing gap between the adjacent display panels 112 is small is met.
In a specific example, in addition to the frame reduction by bending the display area (AA area) on the side of the bending area including the bending display area 1122 forming the splicing area, the frame reduction by routing the other side frames of the display panel 112 in the AA area by using a gate driver on array (GOA) scheme is performed. For example, for the display module 110 on the right side of the tiled screen 100 shown in fig. 1-2, as shown in fig. 3, the left frame is a bending area including a bending display area 1122 forming the tiled area, and the upper frame, the lower frame and the right frame all adopt the scheme of the GOA routing in the AA area.
In one possible implementation manner, the material of the supporting member 111 is metal, that is, the supporting member 111 is a metal supporting member.
In one possible implementation manner, the tiled display screen 100 includes at least one tiled unit, and the tiled unit includes two display modules 110 and a cover plate 120 disposed on the two display modules 110, where the cover plate 120 may be, for example, a glass cover plate. For example, the tiled screen 100 shown in fig. 1-2 includes one tiled unit, and when the tiled screen needs more tiled units to achieve a larger display size, the tiled units can be added in two directions, that is, in the up and down directions or the left and right directions of the two display modules 110 shown in fig. 2.
By adopting the implementation mode, the splicing space can be shortened, the splicing effect of the spliced screen 100 can be weakened, and in addition, the advantages of reducing the process cost and the like can be realized.
In one possible implementation manner, as shown in fig. 1, the display module 110 further includes a polarizer 113 disposed on the side of the flat display region 1121 and the bent display region 1122 facing away from the support 111.
Since the OLED display module is self-luminous, the OLED display module can be free of a polarizer similar to a Liquid Crystal Display (LCD); however, the external light will be reflected back by the cathode (generally metal), and the user will see himself from the picture, which affects the viewing effect and contrast. To address this problem, a polarizer +1/4 λ plate (collectively referred to as circularly polarized light) may be used; when external light passes through the polarizer, half of the light cannot pass through, the half of the light is deflected by 90 degrees from the original light after passing through the 1/4 lambda plate and being reflected, and the reflected light cannot pass through the polarizer.
In this embodiment, it can be seen that reflection prevention can be achieved by disposing the polarizer 113. In addition, the polarizer 113 may also function as a neutral layer, so that the bending radius of the bent display region 1122 may be further reduced, or a smaller bending radius of the bent display region 1122 may be achieved.
In one possible implementation, as shown in FIG. 1, the bonding region 1123 comprises a folded bonding region and a planar bonding region disposed on a side of the support 111 facing away from the display panel 112.
Further, as shown in fig. 1, the display module 110 further includes a polarizer 113 disposed on the flat display region 1121, the bent display region 1122, and a portion of the bent bonding region close to the bent display region 1122, which is away from the side of the support 111, i.e., the polarizer 113 extends to the bonding region 1123 but not to a bending point of the bonding region 1123, which is bent towards the side of the support 111, which is away from the display panel 112.
In this way, by providing the polarizer 113, the neutral layer can be adjusted while achieving reflection prevention, so that the bending radius of curvature of the bending display region 1122 and the bending bonding region near the bending display region 1122 can be further reduced, or the bending radius of the bending display region 1122 and the bending bonding region near the bending display region 1122 can be further reduced.
In one possible implementation, the modulus of the adhesive material of the polarizer 113 is greater than 100KPa and less than 500 KPa. Thus, while the bending region (including the bending display region 1122 and the bonding region 1123) of the display panel 112 is ensured to be subjected to a small-radius bending stress, the polarizer 113 is prevented from being damaged due to an excessive stress.
In one specific example, as shown in fig. 1, the planar areas of the polarizers 113 of the two display modules 110 in the splicing unit are fixed to the cover plate 120 by the optical adhesive 130.
In one possible implementation manner, the display module 110 further includes a back film 114 disposed between the support 111 and the flat display region 1121, that is, as shown in fig. 1, the back film 114 is disposed only under the flat display region 1121, and the back film is not disposed under the bending region of the display panel 112 but is disposed directly on the support 111.
By adopting the implementation manner, when the performance such as moisture resistance and heat resistance is provided for the display panel 112 through the back film 114, the bonding precision of the subsequent process influenced by the wrinkle of the bonding area caused by the back film can be avoided, and the narrow frame of the display module 110 can be easily bent in the bending area of the display panel 112.
In one possible implementation, the radius of curvature or bend radius of the bend display region 1122 is less than 2.5 mm. In one particular example, a radius of curvature of a portion of the bent bonding area of bonding area 1123 proximate to bent display area 1122 is similar to a radius of curvature of bent display area 1122.
Another embodiment of the present invention provides a method for manufacturing the tiled display 100 of the above embodiment, including:
the display module assembly comprises a support piece 111, a display panel 112 is formed on the support piece 111, a bent display area 1122 of the display panel 112 is bent towards the support piece 111, and a bonding area 1123 of the display panel 112 is bent to the side, opposite to the display panel 112, of the support piece 111, so that a plurality of display modules 110 are formed in one direction and comprise display modules 110, the bent display areas 1122 are oppositely arranged, and the bent display areas 1122 are oppositely arranged to form a splicing area.
In a specific example, for the tiled screen 100 including two display modules 110 as shown in fig. 1, the preparation method includes:
s1, two supporting members 111 are provided.
S2, preparing two display panels 112.
In a specific example, the display area of the display panel 112 includes a flexible substrate, and a driving circuit board or a thin-film transistor layer, a planarization layer, a light emitting device layer, and an encapsulation layer sequentially stacked on the flexible substrate, and the preparation process of the display area of the display panel 112 includes:
setting a flexible substrate:
for example, the flexible substrate may be Polyimide (PI), polyethylene naphthalate (PEN), thermoplastic Polyester (PET), or the like.
Forming a driving circuit layer or a thin film transistor layer on a flexible substrate, including:
forming an active layer on the flexible substrate by using a composition process; forming a gate insulating layer on the active layer by deposition or the like; forming a grid electrode on the grid insulating layer by adopting a composition process; forming an interlayer dielectric layer on the grid electrode by deposition and the like; the interlayer dielectric layer is then etched to form a via hole exposing the active layer.
After the via hole in the interlayer dielectric layer is formed, a source electrode and a drain electrode and a signal line electrically connected to one of the source electrode or the drain electrode are formed.
In this example, the materials of the functional layers (such as the active layer, the gate insulating layer, the gate electrode, the interlayer dielectric layer, the source electrode, and the drain electrode) are not limited, and thus, the manufacturing of the driving circuit layer or the thin film transistor layer is completed.
Forming a planarization layer:
specifically, a planarization layer material, such as an organic material, having a thickness of about 1 to 3 μm is deposited to cover each of the layers, and then patterned by a patterning process to form an opening at a position corresponding to the other of the source electrode and the drain electrode.
Forming a light emitting device layer, specifically, comprising:
and depositing anode layer metal of the OLED display panel in the opening of the planarization layer and patterning to form an anode (the anode is connected with the source), wherein the anode is made of ITO, IZO or other metal oxides or Ag, Al, Mo or other metals or alloys thereof.
Forming a pixel defining layer surrounding the anode using a patterning process:
specifically, a layer of pixel defining layer material is deposited, for example, with a thickness of about 1-2 μm, and the pixel defining layer is formed in the display area by using a patterning process, for example, the pixel defining layer material may include negative photoresist, polyimide, epoxy resin, and other organic insulating materials.
And forming a light-emitting layer on the anode in the opening of the pixel defining layer by ink-jet printing or evaporation and the like, wherein the material of the light-emitting layer is an organic material.
Forming a cathode:
the cathode is formed on the whole surface of the OLED display panel, and the material of the cathode may include metals such as Mg, Ca, Li, or Al, or alloys thereof, or metal oxides such as IZO and ZTO, or conductive organic materials such as PEDOT/PSS (poly 3, 4-ethylenedioxythiophene/polystyrene sulfonate).
After the light emitting device layer is formed, an encapsulation layer may be formed:
for example, the encapsulation layer may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. For example, the first inorganic encapsulation layer and the second inorganic encapsulation layer are formed by deposition or the like. The organic packaging layer is formed by adopting an ink-jet printing mode.
In the above, the preparation of the display area of the display panel 112 is completed, and at the same time, the bonding area 1123 is also prepared on one side of the display area.
S3, forming a polarizer 113 and a back film 114 on the upper and lower sides of the two display panels 112, respectively, and removing a portion of the polarizer 113 at the end of the bonding region 1123 and a portion of the back film 114 according to the defined flat display region 1121.
S4, the back film 114 is fixed on the planar area of the support 111, and at the same time, the bent display area 1122 of the display panel 112 is fixed on the arc area of the support 111 and the bonding area 1123 of the display panel 112 is bent to the back of the support 111 for subsequent compression bonding.
S5, adhering the cover plate 120 to the two polarizers 113 by using the optical adhesive 130.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations and modifications can be made on the basis of the above description, and all embodiments cannot be exhaustive, and all obvious variations and modifications belonging to the technical scheme of the present invention are within the protection scope of the present invention.
Claims (10)
1. A spliced screen comprises a plurality of display modules and is characterized in that,
the display module comprises a support piece and a display panel arranged on the support piece;
the display panel comprises a plane display area, a bent display area which is arranged on one side of the plane display area and bent towards the side of the supporting piece, and a bonding area which is arranged on one side of the bent display area, is far away from the plane display area, and is bent to one side of the supporting piece, which is back to the display panel;
in one direction, a plurality of display module assembly include the relative display module assembly that sets up in the display area of buckling, the relative display area that buckles that sets up forms the concatenation region.
2. The spliced screen of claim 1, comprising at least one splicing unit, wherein the splicing unit comprises two display modules and a cover plate arranged on the two display modules.
3. The tiled screen of claim 1, wherein the bonding areas include a bent bonding area and a planar bonding area disposed on a side of the support member facing away from the display panel.
4. The spliced screen of claim 1, wherein the display module further comprises polarizers disposed on the sides of the flat display area and the bent display area facing away from the support.
5. The spliced screen of claim 3, wherein the display module further comprises a polarizer disposed on a side of the flat display area, the bent display area, and a portion of the bent bonding area that is adjacent to the bent display area that faces away from the support.
6. The spliced screen of claim 4 or 5, wherein the polarizer has a glue modulus of greater than 100KPa and less than 500 KPa.
7. The tiled screen of claim 1 wherein the display module further includes a backing film disposed between the support and the flat display area.
8. The tiled screen of claim 1 wherein the radius of curvature of the curved display area is less than 2.5 mm.
9. The tiled screen of claim 1, wherein the support member is metal.
10. A method of making a tiled screen according to any of claims 1 to 9, comprising:
form display panel on support piece, will display panel's the display area of buckling to support piece lateral buckling and make display panel's bonding district buckle extremely support piece's the dorsad display panel one side to form a plurality of display module assembly in a direction and include the relative display module assembly that sets up in the display area of buckling, make the relative display area of buckling that sets up forms the concatenation region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110438066.9A CN113160714A (en) | 2021-04-22 | 2021-04-22 | Spliced screen and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110438066.9A CN113160714A (en) | 2021-04-22 | 2021-04-22 | Spliced screen and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113160714A true CN113160714A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110438066.9A Pending CN113160714A (en) | 2021-04-22 | 2021-04-22 | Spliced screen and preparation method thereof |
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| CN114822267A (en) * | 2022-05-31 | 2022-07-29 | 武汉华星光电半导体显示技术有限公司 | Splicing screen |
| WO2023103020A1 (en) * | 2021-12-07 | 2023-06-15 | Tcl华星光电技术有限公司 | Tiled panel |
| US12025873B2 (en) | 2021-12-07 | 2024-07-02 | Tcl China Star Optoelectronics Technology Co., Ltd. | Spliced panel |
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