CN111755496A - Display panel, display module and manufacturing method thereof - Google Patents
Display panel, display module and manufacturing method thereof Download PDFInfo
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- CN111755496A CN111755496A CN202010617313.7A CN202010617313A CN111755496A CN 111755496 A CN111755496 A CN 111755496A CN 202010617313 A CN202010617313 A CN 202010617313A CN 111755496 A CN111755496 A CN 111755496A
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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
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
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- H—ELECTRICITY
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Abstract
The invention discloses a display panel, a display module and a manufacturing method thereof, and relates to the technical field of display, wherein the display panel comprises a plurality of first areas and second areas which are alternately arranged, and at least part of the first areas are transparent display areas; the second area is positioned between two adjacent first areas; the display panel further comprises bending areas, each second area is reused as a bending area, at least part of orthographic projections of two adjacent first areas are overlapped, and the first direction is the stacking direction of the two adjacent first areas. The pixels at the appointed positions in the first areas of different layers are lightened, so that the display picture has a depth-of-field effect, multiple display effects with different types of requirements are achieved, and 3D display with different display effects at multi-dimensional angles is achieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display module and a manufacturing method of the display module.
Background
In the prior art, most display panels are 2D flat display panels, that is, only conventional flat display effects can be achieved, and the pictures that can be displayed are relatively simple and cannot reflect the depth of field effect; and the displayed pattern is relatively single, even if the front three-dimensional display is achieved by using the 3D technology, different display effects cannot be seen from multiple angles. Therefore, it is desirable to provide a display panel to realize 3D display with different display effects at different angles.
Disclosure of Invention
In view of the above, the present invention provides a display panel, a display module and a manufacturing method thereof, so as to solve the problem that the current display panel cannot show the depth of field effect and cannot see different display effects from multiple angles.
In a first aspect, the present application provides a display panel, where the display panel includes a plurality of first regions and a plurality of second regions alternately arranged, and at least a part of the first regions are transparent display regions; wherein the second region is located between two adjacent first regions;
the display panel further comprises bending areas, each second area is reused as the bending area, at least part of orthographic projections of two adjacent first areas along a first direction are overlapped, and the first direction is the stacking direction of the two adjacent first areas.
In a second aspect, the present application provides a display module, which includes a display panel;
the display module comprises a display area and a non-display area, the first area comprises a first area provided with a first pixel unit and a second area surrounding the first area, and at least part of the second area is reused as the non-display area; and/or, the non-display area is located at least partially within the second area;
the display module further comprises a flexible circuit board and a driving chip, wherein the flexible circuit board and the driving chip are arranged in the non-display area.
In a third aspect, the present application provides a method for manufacturing a display module, which is used for the display module;
the manufacturing method comprises the following steps:
providing an array layer;
evaporating a light emitting layer on the array layer;
carrying out flexible packaging on the light-emitting layer by using a packaging layer to form a display panel;
bending the display panel through a bending part, and fixing the bent display panel through optical cement;
binding a flexible circuit board and a driving chip on the display panel;
and attaching a protective film layer on the surface of the display panel.
Compared with the prior art, the display panel, the display module and the manufacturing method thereof provided by the invention at least realize the following beneficial effects:
the display panel comprises a plurality of first areas and second areas which are alternately arranged, orthographic projections of each two adjacent first areas in the stacking direction are at least partially overlapped after the display panel is bent by a plurality of bending areas (second areas), and the first areas are set to be transparent display areas; the pixels at the appointed positions in the first areas of different layers are lightened, so that the display picture has a depth-of-field effect, multiple display effects with different types of requirements are achieved, and 3D display with different display effects at multi-dimensional angles is achieved.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic view of an unbent display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a display panel after being bent according to an embodiment of the present disclosure;
fig. 3 is another schematic view of a display panel after being bent according to an embodiment of the present disclosure;
fig. 4 is a schematic view illustrating a display panel after being bent according to an embodiment of the present disclosure;
FIG. 5 is a top view of FIG. 2, FIG. 3, or FIG. 4 according to an embodiment of the present disclosure;
FIG. 6 is a top view of FIG. 4 according to an embodiment of the present application;
FIG. 7 is a perspective view of only the first regions of FIG. 4 according to an embodiment of the present disclosure;
fig. 8 is another schematic view of an unbent display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic view illustrating an unbent display panel according to an embodiment of the present application;
FIG. 10 is an AA' cross-sectional view of FIG. 1 provided in accordance with an embodiment of the present application;
fig. 11 is a further schematic view of a display panel after being bent according to an embodiment of the present application;
fig. 12 is a schematic cross-sectional view of a display device according to an embodiment of the present application;
fig. 13 is a schematic diagram illustrating a plurality of display panels stacked in accordance with an embodiment of the present disclosure;
fig. 14 is a flowchart illustrating a method for manufacturing a display module according to an embodiment of the present disclosure;
fig. 15 is a simplified schematic diagram of fig. 12 according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the prior art, most display panels are 2D flat display panels, that is, only conventional flat display effects can be achieved, and the pictures that can be displayed are relatively simple and cannot reflect the depth of field effect; and the displayed pattern is relatively single, even if the front three-dimensional display is achieved by using the 3D technology, different display effects cannot be seen from multiple angles. Therefore, it is desirable to provide a display panel to realize 3D display with different display effects at different angles.
In view of the above, the present invention provides a display panel, a display module and a manufacturing method thereof, so as to solve the problem that the current display panel cannot show the depth of field effect and cannot see different display effects from multiple angles.
Fig. 1 is a schematic view of an unbent display panel provided in an embodiment of the present application, fig. 2 is a schematic view of a display panel provided in an embodiment of the present application after being bent, please refer to fig. 1-2, the present application provides a display panel 100, the display panel 100 includes a plurality of first regions 10 and second regions 20 alternately arranged, at least a portion of the first regions 10 are transparent display regions; wherein the second region 20 is located between two adjacent first regions 10;
the display panel 100 further includes a bending region, each second region 20 is reused as the bending region, and orthogonal projections of two adjacent first regions 10 at least partially overlap along a first direction, which is a stacking direction of the two adjacent first regions 10.
Specifically, the present application provides a display panel 100, where the display panel 100 may select a single elongated display panel 100 as shown in fig. 1, the display panel 100 includes a plurality of first regions 10 and second regions 20 that are alternately arranged, that is, a region of the display panel 100 in the long direction is divided into a first region 10, a second region 20, and a first region 10 … …, and any second region 20 is located between any two adjacent first regions 10 in the long direction of the display panel 100. Any first region 10 of the display panel 100 provided in the present application includes a transparent display region, for example, a region 32 enclosed by a dotted line in the leftmost first region 10 shown in fig. 1 is a transparent display region, and the transparent display region can be used for displaying a pattern.
The strip-shaped display panel 100 provided by the present application further includes a bending region, wherein each second region 20 is reused as a bending region, as shown in fig. 2, after the strip-shaped display panel 100 is bent by the bending region, any first region 10 may be a flat region corresponding to the display panel 100, and the second region 20 is a bending region for bending the display panel 100; after the display panel 100 is bent by each bending region, all the first regions 10 are sequentially arranged in the stacking direction of the display panel 100, and the stacking direction of two adjacent first regions 10 is the first direction, so that orthographic projections of two adjacent first regions 10 in the first direction are at least partially overlapped; in the display panel 100 provided by the present application, orthographic projections of any two adjacent first regions 10 along the first direction are overlapped, which is beneficial to controlling the display panel 100 to display a more regular and symmetrical display image.
According to the present disclosure, a single strip-shaped display panel 100 is used, and multiple bending of multiple second regions 20 (bending regions) of the display panel 100 causes the display panel 100 to form a stacked structure as shown in fig. 2, wherein multiple first regions 10 are stacked in a first direction, and each first region 10 includes a large-area transparent display region, wherein the transparent display region in each first region 10 can be as a region 32 enclosed by a dotted line in fig. 1, and by lighting up light emitting elements at specific positions of the multiple stacked transparent display regions, a display screen has a depth of field effect, and multiple display effects required by different types are achieved, so as to achieve 3D display with different display effects at different angles.
It should be noted that the second region 20 in the illustration is filled with a dot pattern, which is only for the sake of the obvious illustration effect, so that a reader can distinguish the position of the second region 20 in the single elongated display panel 100 conveniently, and does not represent the actual color or the actual transparency of the second region 20, the second region 20 in the display panel 100 provided by the present application can be set as a light-transmitting structure, a partially light-transmitting structure, or a light-tight structure according to the requirement, and the present application is not limited specifically; in addition, whether a component for emitting light is arranged in the second area 20 is not limited, and a user can adjust the second area according to design requirements.
It should be further noted that the first region 10 in the display panel 100 provided by the present application may be a flexible transparent display panel or a rigid transparent display panel, and the second region 20 may be a flexible transparent display panel or a non-flexible transparent display panel, but the second region 20 must have good toughness to realize the bending of the display panel 100.
In the drawings of the display panel 100 of the present application, the component structures such as the flexible circuit board 34 and the driving chip 33 included in the display device corresponding to the display panel 100 are shown for clarity of illustration, and do not represent that the component structures such as the flexible circuit board 34 and the driving chip 33 belong to the display panel 100. It should be noted that, although the second region 20 may be bent when the foldable display panel 100 is formed, since the second region 20 has a certain thickness and the components such as the flexible circuit board 34 and the driving chip 33 are bound after the display panel 100 is bent, the components such as the flexible circuit board 34 and the driving chip 33 are disposed in the bending region (the second region 20) and are not damaged.
Referring to fig. 1-2, optionally, the display panel 100 includes a plurality of pixel units 120, and the pixel units 120 include a first pixel unit 12 disposed in the first region 10;
any first region 10 includes a plurality of first pixel units 12 arranged in an array, and the arrangement density of the first pixel units 12 in any first region 10 is the same.
Specifically, the display panel 100 includes a plurality of pixel units 120, each pixel unit 120 at least includes a first pixel unit 12 disposed in a first region 10, where each first region 10 may include at least one first pixel unit 12, and the number and arrangement of the first pixel units 12 included in each first region 10 may also be adjusted according to requirements, and the number and arrangement of the first pixel units 12 included in any first region 10 are not specifically limited in this application, and a user may design and adjust according to their own requirements.
The length and width dimensions of each first region 10 in the display panel 100 provided by the present application may be selected to be the same, that is, the area and the shape of each first region 10 are the same, so that the orthographic projections of any two adjacent first regions 10 in the display panel 100 along the first direction after bending can be overlapped. For example, any one of the first regions 10 may include a plurality of first pixel units 12 arranged in an array, and the arrangement densities of the first pixel units 12 in any one of the first regions 10 are the same; in other words, the arrangement density and the arrangement number of the first pixel units 12 in each first region 10 may be set to be the same, that is, the distance between any two adjacent first pixel units 12 along the second direction is equal, and the distance between any two adjacent first pixel units 12 along the third direction is equal. With such an arrangement, on one hand, the integrated manufacturing of all the first regions 10 of the display panel 100 is facilitated, the manufacturing process of the display panel 100 is simplified, and the production efficiency of the display panel 100 is improved; on the other hand, when the designated first pixel unit 12 is turned on as required in the first direction, the display effect of the entire folded display panel 100 can be made better, and the display screen can be made more uniform.
It should be noted that, the present application is not limited to the above embodiments, and the present application does not limit that the arrangement density and the arrangement number of the first pixel units 12 in any first region 10 of the display panel 100 are all the same, and a user can perform corresponding adjustment according to the display requirement of the user on the display panel 100, so as to achieve the advantages of reducing material loss and reducing cost.
Fig. 3 is another schematic diagram of the display panel after bending according to the embodiment of the present application, please refer to fig. 3, which further provides a setting manner of the first pixel units 12 in the display panel 100, wherein the first pixel units 12 in the even layer can be arranged between any two adjacent first pixel units 12 in the odd layer. It should be noted that the even layer is the even first regions 10 before the display panel 100 is bent, and the odd layer is the odd first regions 10 before the display panel 100 is bent; the meaning of the above-mentioned "slotting" is: the orthographic projection of the first pixel unit 12 in the even layer on the light-emitting surface of the display panel 100 is located between the orthographic projections of any two adjacent first pixel units 12 in the odd layer on the light-emitting surface of the display panel 100, wherein the orthographic projection of the first pixel unit 12 in the odd layer on the light-emitting surface of the display panel 100 and the orthographic projection of the first pixel unit 12 in the even layer on the light-emitting surface of the display panel 100 may have a partial overlap, and may also be set to be completely non-overlapping.
It should be noted that fig. 3 only shows an arrangement manner in which the first pixel units 12 in the even layers are inserted and arranged between any two adjacent first pixel units 12 in the odd layers along the second direction; for example, along the third direction, the first pixel unit 12 in the even layer is inserted and sewed between any two adjacent first pixel units 12 in the odd layer; or, along the second direction and the third direction, the first pixel units 12 in the even layer are all inserted and arranged between any two adjacent first pixel units 12 in the odd layer; or a part of the even layers of the first pixel units 12 are inserted and arranged between any two adjacent first pixel units 12 in the odd layers, and the orthographic projection of the other part of the even layers of the first pixel units 12 on the light-emitting surface of the display panel 100 is overlapped with the orthographic projection of the odd layers of the first pixel units 12 on the light-emitting surface of the display panel 100; the positions of the even and odd layers can be interchanged.
In summary, for the setting position of any one of the first pixel units 12 in each layer, the user can design accordingly according to his or her own needs to customize the personalized display panel 100.
Referring to fig. 2, optionally, in any one of the first regions 10, a distance between any two adjacent first pixel units 12 is S1, and S1 is less than or equal to 5 μm and less than or equal to 5000 μm.
Specifically, when the first pixel units 12 in any one of the first regions 10 are arranged in an array, the distance between any two adjacent first pixel units 12 is S1, and the preferred range of S1 provided by the present application is 5 μm to 5000 μm; s1 may refer to a distance between two first pixel units 12 in the second direction, or a distance between two first pixel units 12 in the third direction.
The reason why S1 is preferably not less than 5 μm and not more than 5000 μm is that when the distance between two adjacent first pixel units 12 is less than 5 μm, the wires and other components electrically connected to each first pixel unit 12 cannot be well arranged, which easily causes the wires and other components driving the first pixel units 12 to be adhered when arranged, and further causes the risk of damaging the whole display panel 100, which is not favorable for the production yield of the display panel 100. When the distance between two adjacent first pixel units 12 is greater than 5000 μm, due to the excessively large distance between the adjacent first pixel units 12, the situation that the display pattern cannot be smoothly displayed and a breakpoint exists due to the excessively large distance between the lighted first pixel units 12 may occur, which is not favorable for the good display effect of the display panel 100. Therefore, the distance between any two adjacent first pixel units 12 is 5 μm to 5000 μm, which not only can ensure the stable arrangement of the connecting wires and other components, but also can ensure the good display effect of the display panel 100.
It should be noted that, the range of the S1 between two first pixel units 12 that are arbitrarily adjacently disposed is 5 μm to 5000 μm, which is applicable to the display requirements of the currently popular small and medium-sized screens, the value range of the S1 is only a preferred data range provided by the present application, and for screens with different sizes and different display requirements, a user can adaptively adjust the distance between two first pixel units 12 that are arbitrarily adjacently disposed to meet different requirements.
Fig. 4 is a further schematic diagram of the display panel after being bent according to the embodiment of the present application, fig. 5 is a top view of fig. 2, fig. 3, or fig. 4 according to the embodiment of the present application, please refer to fig. 4 and fig. 5, optionally including a plurality of pixel units 120, where each pixel unit 120 includes a first pixel unit 12 disposed in the first region 10;
the orthographic projections of all the first pixel units 12 in the first area 10 on the first light-emitting surface of the display panel 100 are arranged in an array, and the first light-emitting surface is perpendicular to the first direction.
Specifically, the display panel 100 includes a plurality of pixel units 120, each pixel unit 120 at least includes a first pixel unit 12 disposed in a first region 10, where each first region 10 may include at least one first pixel unit 12, and the number and arrangement of the first pixel units 12 included in each first region 10 may also be adjusted according to requirements, and the number and arrangement of the first pixel units 12 included in any first region 10 are not specifically limited in this application, and a user may design the pixel units according to their own requirements.
In the display panel 100 provided by the present application, any one of the first regions 10 stacked along the first direction may include at least one first pixel unit 12, and the orthographic projections of the first pixel units 12 disposed in each of the first regions 10 on the first light emitting surface of the display panel 100 are arranged in an array; for example, each layer of the first region 10 includes X rows of the first pixel units 12 (X is 1 shown in fig. 4 and 5), and an orthographic projection of a region including the first pixel unit 12 in any one of the first regions 10 on the first light-emitting surface of the display panel 100 does not coincide with an orthographic projection of a region including the first pixel unit 12 in any other one of the first regions 10 on the first light-emitting surface of the display panel 100, and the number and the arrangement manner of all the first pixel units 12 in the display panel 100 formed by combining the X rows of the first pixel units 12 in the multiple layers of the first regions 10 and each layer of the first regions 10 are equal to the number and the arrangement manner of the first pixel units 12 arranged in an array that can be included in any one of the first regions 10. The first light emitting surface of the display panel 100 may be the surface of the uppermost first region 10 in fig. 4.
It should be noted that, the number and the arrangement position of the first pixel units 12 disposed in any one of the regions are not limited in the present application, as long as all the first pixel units 12 disposed in the first region 10 are arranged in an array in the orthographic projection on the first light-emitting surface of the display panel 100.
The user can adjust the arrangement position and the arrangement number of the first pixel units 12 in each first area 10 according to the position required to be lightened during the picture display, so as to reduce the waste of the first pixel units 12, the wires electrically connected with the first pixel units and other components, and ensure the display effect of the picture display.
Fig. 6 is a top view of fig. 4 provided in an embodiment of the present application, and fig. 7 is a perspective view of only the first regions in fig. 4 provided in an embodiment of the present application, please refer to fig. 2 to fig. 7, alternatively, on the first light emitting surface, a distance between orthographic projections of any two adjacent first pixel units 12 is S2, and 5 μm ≦ S2 ≦ 5000 μm.
Fig. 5 shows a top view of the display panel 100 after bending, wherein the orthographic projections of all the first pixel units 12 in the first area 10 on the first light-emitting surface of the display panel 100 are arranged in an array,
fig. 6 is another top view illustrating that the orthographic projections of all the first pixel units 12 in the first regions 10 of the display panel 100 on the first light emitting surface of the display panel 100 are arranged in an array after being bent, specifically, when the orthographic projections of all the first pixel units 12 in the first regions 10 of the display panel 100 on the first light emitting surface of the display panel 100 are arranged in an array, the distance between any two adjacent first pixel units 12 on the first light emitting surface is S2, which provides that S2 is preferably in a range of 5 μm to 5000 μm; s2 may refer to a distance between two first pixel units 12 in the second direction, or a distance between two first pixel units 12 in the third direction.
The reason why S2 is preferably not less than 5 μm and not more than 5000 μm in the present application is that when the distance between two adjacent first pixel units 12 in the same first region 10 is less than 5 μm, the wires and other components electrically connected to each first pixel unit 12 cannot be well arranged, which easily causes the wires and other components driving the first pixel units 12 to be adhered when being arranged, and further causes the risk of damaging the whole display panel 100, which is not favorable for the production yield of the display panel 100. When the distance between two first pixel units 12 adjacently arranged in the same first region 10 or on the first light emitting surface is greater than 5000 μm, the distance between the first pixel units 12 is too large, which may cause the display pattern to be displayed fluently and cause a break point, and is not favorable for the good display effect of the display panel 100. Therefore, the distance between any two adjacent first pixel units 12 is 5 μm to 5000 μm, which not only can ensure the stable arrangement of the connecting wires and other components, but also can ensure the good display effect of the display panel 100.
It should be noted that, the range of the distance S2 between the orthographic projections of any two adjacent first pixel units 12 on the first light emitting surface of the display panel 100 provided by the present application is 5 μm to 5000 μm, which is applicable to the display requirements of the currently popular small and medium-sized screens, the value range of the distance S2 is only a preferred data range provided by the present application, and for screens with different sizes and different display requirements, a user can adaptively adjust the distance between the orthographic projections of any two adjacent first pixel units 12 in the orthographic projections on the first light emitting surface of the display panel 100, so as to meet different requirements.
Fig. 6 shows a top view of a display panel 100 comprising only 5 first regions 10, wherein each first region 10 comprises only 2 or 4 first pixel units 12, resulting in a pattern of the number "8"; fig. 7 shows a perspective view of a display panel 100 including only 9 first regions 10, and fig. 7 shows only the first region 10 portion of the display panel 100, wherein each first region 10 may be provided with only 1 or 2 first pixel units 12, and finally a pattern of the number "8" is formed. The display transparency of the first pixel units 12 in different rows is different, only to show that the first pixel units 12 in each row are located in the first regions 10 of different layers, and do not represent the light emitting brightness of the first pixel units 12 in each first region 10; under an ideal condition, when a user watches a display screen of the display panel 100, the light emitting brightness of the first pixel unit 12 in each first region 10 is the same, and the display panel 100 after being bent can bring a better three-dimensional display effect to the viewer, thereby realizing 3D display with different display effects at multiple angles.
It should be noted that fig. 6 and fig. 7 show a display panel 100 with a relatively fixed displayed image, that is, when all the first pixel units 12 disposed in the first area 10 of the display panel 100 are lighted, only one graphic can be displayed; however, the present application is not limited thereto, and in order to improve the diversified display effect of the display panel 100, the first pixel units 12 in each first area 10 may be arranged in an array, and when different images need to be displayed, the first pixel units 12 at corresponding positions are adaptively turned on.
Referring to fig. 8, the pixel unit 120 further includes a second pixel unit 22 disposed in the second region 20, and the arrangement density of the first pixel units 12 is greater than that of the second pixel units 22.
Specifically, as shown in fig. 8, in the strip-shaped display panel 100 that is not yet bent, the pixel unit 120 may further include, in addition to the first pixel units 12, second pixel units 22 disposed in the second region 20, and when the first pixel units 12 in any first region 10 are arranged in an array, the arrangement density of the first pixel units 12 in any first region 10 is greater than the arrangement density of the second pixel units 22 in any second region 20; when the orthographic projections of all the first pixel units 12 in the first region 10 on the first light emitting surface of the display panel 100 are arranged in an array, the arrangement density of the first pixel units 12 arranged in an array on the first light emitting surface is greater than that of the second pixel units 22 in any one of the second regions 20. Wherein, the arrangement density is a distance between two first pixel units 12 arbitrarily adjacent along the second direction, or a distance between two second pixel units 22 arbitrarily adjacent along the second direction; a distance between any adjacent two of the first pixel units 12 in the third direction, or a distance between any adjacent two of the second pixel units 22 in the third direction. That is, the present application provides that the distance between any two adjacent first pixel units 12 along the second direction is smaller than the distance between any two adjacent second pixel units 22, and the distance between any two adjacent first pixel units 12 along the third direction is smaller than the distance between any two adjacent second pixel units 22.
Because the second region 20 of the display panel 100 is multiplexed as the bending region in the present application, the arrangement density of the second pixel units 22 in the second region 20 is set to be large, which is beneficial to avoiding the generation of mutual stress between two adjacent second pixel units 22 in the bent second region 20 and avoiding the risk of damage to the second pixel units 22 in the bent second region 20.
When the plurality of second pixel units 22 are disposed in the second region 20 provided by the present application, that is, the second region 20 and the first region 10 may both be used for displaying a picture, in this application, it is preferable that any second region 20 also includes a transparent display region, and the light transmittance of the transparent display region in the second region 20 may be set to be greater than 50%, where the light transmittance is the percentage of the light flux passing through the transparent display region of the second region 20 and the light flux that needs to pass through the inside of the transparent display region of the second region 20. The light transmittance of the transparent display area in the second area 20 is set to be greater than 50%, which is beneficial to improving the light transmittance of the bending area (the side of the display panel 100 after bending) of the whole display panel 100, is beneficial to realizing 3D display with multidimensional angles and different display effects, and improves the 3D display effect of the display panel 100 after bending.
As shown in FIG. 4, when the second region 20 is reused as a bending part, the bending radius of the bending part provided by the present application is R, wherein R is greater than or equal to 2.5mm and less than or equal to 20 mm; when the bending radius of the bending part is smaller than 2.5mm, the area of the bending part is easily too small, which is not convenient for the arrangement of the second pixel unit 22 and is also not beneficial for the arrangement of other components; when the bending radius of the bending portion is greater than 20mm, the thickness between two adjacent first regions 10 in the first direction is too large, so that the overall thickness of the bent display panel 100 is increased, which is not favorable for the thin design requirement of the current display device.
Fig. 9 is a further schematic view of an unbent display panel provided in the present embodiment, please refer to fig. 9, in addition to the strip-shaped display panel 100 provided above, the unbent display panel 100 may have the shape shown in fig. 9, that is, the display panel 100 shown in fig. 9 may increase the number of layers of the first region 10 in the display panel 100 by adopting a design manner of increasing lateral bending.
In addition, the second pixel unit 22 may not be disposed in the second region 20, and the light transmittance of the second region 20 may be selectively set to be greater than 50%; since the second region 20 is transparent to light, when the first pixel unit 12 disposed in the first region 10 emits light, scattered light is emitted from the second region 20, so that the 3D display effect of the folded display panel 100 can be improved.
Furthermore, in the present application, when the second pixel unit 22 is not disposed in the second area 20, the second area 20 can be optionally disposed as a non-display area, and at this time, almost the entire first area 10 can be used as a display area, and devices such as ICs, traces, etc. are disposed in the second area 20.
In addition, it should be noted that the second region 20 for connecting between two adjacent first regions 10 may also be directly disposed as the flexible circuit board 34, and the flexible circuit board 34 provides transmission of electrical signals between the first regions 10, which is beneficial to overall control of the entire display panel 100.
Note that the above-mentioned "almost the entire first region 10" means: in the manufacturing process of the display panel 100, it may be necessary to leave a part of the non-display area in each first area 10 for routing devices, for example, at least a part of the area outside the area 11 enclosed by the dashed line in fig. 9 may be reserved as the non-display area, but the area required to be reserved as the non-display area is smaller, and thus, it is described that almost the entire first area 10 is used as the display area. In addition, when the technical conditions in the art allow, the entire first region 10 may also be used as a display region to display a picture, so as to improve the 3D display effect of the display panel 100.
Fig. 10 is an AA' cross-sectional view of fig. 1 according to an embodiment of the present disclosure, and fig. 11 is a further schematic view of the display panel after being bent according to the embodiment of the present disclosure, referring to fig. 10 and fig. 11, optionally, the display panel 100 includes an array layer 13, a light emitting layer 14 and an encapsulation layer 15, the light emitting layer 14 is disposed between the array layer 13 and the encapsulation layer 15; the light emitting directions of the light emitting layer 14 at least include a first light emitting direction 41 and a second light emitting direction 42, the first light emitting direction 41 is a direction of the light emitting layer 14 toward the array layer 13, and the second light emitting direction 42 is a direction of the light emitting layer 14 toward the encapsulation layer 15.
Specifically, the array layer 13 includes a substrate 131, and an active layer 132, a first metal layer 133 and a source-drain metal layer 134 disposed on one side of the substrate 131; the display panel 100 further includes a light emitting layer 14 (at least including an ITO layer (indium tin oxide semiconductor transparent conductive film) 70A, a light emitting film layer 70B, and a second metal layer 70C) disposed on one side of the array layer 13, wherein the ITO layer 133 provided herein is optionally made to have a thickness of 10nm to 200 nm; and the encapsulation layer 15 is arranged on the side of the light-emitting layer 14 away from the array layer 13, wherein the light-emitting layer 14 is arranged on the side of the source-drain metal layer 134 away from the substrate 131; the encapsulation layer 15 includes an optical effect layer 152, a planarization layer 153, an inkjet printing layer 154 and a planarization layer 155 which are sequentially disposed on the side of the light-emitting layer 14 away from the array layer 13; the first metal layer 133 can be made of silver metal, and the second metal layer 70C can be made of silver metal or magnesium-silver alloy metal; the first metal layer 133 and the second metal layer 70C are made to have a thickness of 7nm to 30nm, that is, the first metal layer 133 and the second metal layer 70C are made to have a very thin thickness, so that the light transmittance is good, and the multi-surface light emitting effect of the display panel 100 is not affected.
Because the first metal layer 133 and the second metal layer 70C have good light transmittance, the first metal layer 133 and the second metal layer 70C are not arranged to perform total reflection on light, and the light emitting direction of the light emitting layer 14 provided by the present application may at least include a first light emitting direction 41 and a second light emitting direction 42, where the first light emitting direction 41 is a direction in which the light emitting layer 14 faces the array layer 13, and the second light emitting direction 42 is a direction in which the light emitting layer 14 faces the encapsulation layer 15, that is, the display panel 100 provided by the present application can at least realize double-sided light emission along the first direction; when the second region 20 also includes a transparent display region, the light of the light emitting layer 14 has a scattering effect, so that the display panel 100 folded along the bending portion has a multi-surface light emitting effect, and thus, various display effects of different types of requirements can be achieved, and 3D display with different display effects at a multi-dimensional angle is achieved.
Fig. 11 shows a bending effect diagram when the display panel 100 includes the array layer 13, the light emitting layer 14 and the encapsulation layer 15.
Fig. 12 is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure, please refer to fig. 1 and 12, and based on the same inventive concept, the present disclosure further provides a display module 200, where the display module 200 includes the display panel 100;
referring to fig. 1, the display module 200 includes a display area 32 and a non-display area 31, the first area 10 includes a first area 11 where the first pixel units 12 are disposed and a second area 17 surrounding the first area 11, and at least a portion of the second area 17 is reused as the non-display area 31; and/or, the non-display area 31 is located at least partially within the second region 20;
the display module 200 further includes a flexible circuit board 34 and a driving chip 33, and the flexible circuit board 34 and the driving chip 33 are disposed in the non-display area 31.
Specifically, the present application further provides a display module 200, where the display module 200 includes at least the display panel 100 shown in fig. 1 and 2, and the display module 200 includes a display area 32 and a non-display area 31; the first region 10 of the display panel 100 corresponding to the display module 200 may include a first region 11 provided with the first pixel unit 10 and a second region 17 surrounding the first region 11, wherein at least a portion of the second region 17 may be reused as the non-display region 31, and the second region 17 that is not reused as the non-display region 31 may have a light-transmitting effect; and/or, the non-display area 31 may also be disposed in at least a portion of the second area 20, for example, the second area 20 may also include a first area 11 where the second pixel unit 22 is disposed and a second area 17 surrounding the first area 11, where at least a portion of the second area 17 may be reused as the non-display area 31, and the second area 17 that is not reused as the non-display area 31 may be provided with a light-transmitting effect; or the whole second area 20 can be set to be the non-display area 31 (not shown in the figure).
The display module 200 further comprises at least one group of flexible circuit board 34 and a driving chip 33, and the flexible circuit board 34, the driving chip 33 and other components are arranged in the non-display area 31 of the display panel 100, for example, arranged in at least a part of the second area 20 and/or at least a part of the first area 10, so as to normally drive the display function of the display panel 100, and meanwhile, the display module 200 does not have adverse effects on the transparent 3D display effect. As in the embodiment provided in fig. 1, the flexible circuit board 34 and the driving chip 33 are disposed in a partial edge area (non-display area 31) in one first area 10; as in the embodiment provided in fig. 2, the flexible circuit board 34 and the driving chip 33 are disposed in a second region 20, where the second region 20 may be the non-display region 31 in the display panel 100 as a whole, or may be the non-display region 31 only in a partial region where the flexible circuit board 34 and the driving chip 33 are disposed; the present application does not specifically limit the positions of the flexible circuit board 34 and the driving chip 33 in the display panel 100 or the display device 200, and the flexible circuit board 34 and the driving chip 33 may be disposed in other film structures besides the display panel 100, as long as the normal display of the display device 200 can be driven.
Referring to fig. 1, fig. 4-fig. 5 and fig. 12, fig. 1 shows only a schematic structural diagram of a portion of the pixel unit 120 electrically connected to the first trace 51 and the second trace 52; in any first region 10 of the display panel 100 provided by the present application, the length along the second direction is D1, the length along the third direction is D2, and D1 is not less than D2; the total thickness of the display module 200 along the first direction is H, and H is more than or equal to 300mm and less than or equal to D1. The second direction may be, for example, an extending direction of a first trace 51 in the display panel 100, the third direction is an extending direction of a second trace 52 in the display panel 100, where the second direction and the third direction are crossed, a first pixel unit 12 is formed between any two adjacent first traces 51 and any two adjacent second traces 52, where the first pixel unit 12 is, for example, a sub-pixel unit, the first trace 51 may be, for example, a scan line, and the second trace 52 may be, for example, a data line; the first direction here is a stacking direction of the plurality of first regions 10.
The total thickness of the display module 200 in the first direction is set to be greater than 300mm, and if the thickness of the display module 200 is smaller than 300mm, the number of the film layers of the first region 10 which can be formed after the corresponding display panel 100 is bent can be reduced, which is not beneficial to the implementation of the depth-of-field effect in the 3D reality; in addition, the total thickness of the display module 200 along the first direction is smaller than the length of the short side of any first region 10 in the display panel 100, so that the display module is suitable for the aesthetic and conventional arrangement of the public.
Referring to fig. 4 and 12, optionally, the display module 200 further includes an optical adhesive 44, and the optical adhesive 44 is at least filled in a gap space between any two adjacent first regions 10 along the first direction.
Specifically, the display module 200 further includes an optical adhesive 44, and the optical adhesive 44 can be used to fill a gap space between any two adjacent first regions 10 along the first direction; the bent shape of the entire display module 200 bent by the bending part is fixed by the optical adhesive 44.
The distance between any two adjacent first regions 10 along the first direction is T, where T is more than 0 and less than or equal to 5mm, where the filling thickness of the optical adhesive 44 is T, and a certain gap space is required between two adjacent first regions 10 along the first direction of the bent display panel 100, so that the optical adhesive 44 can fill the gap space therebetween to fix the bent display panel 100; this application sets up display panel 100 and buckles the back, and height between arbitrary two adjacent first region 10 is no longer than 5mm, is favorable to guaranteeing the slimming of the whole display module assembly 200 of final formation, and is favorable to on the basis of the display effect of ensuring display device 3D depth of field, avoids the too big not good phenomenon of display effect who causes of distance of luminous component between the lower floor.
Fig. 13 is a schematic view illustrating a plurality of display panels stacked in a stack according to an embodiment of the present disclosure, referring to fig. 13, optionally, the display module 200 includes a plurality of display panels 100 stacked in a first direction, and an optical adhesive 44 is filled between any two adjacent display panels 100.
Specifically, fig. 13 shows a schematic diagram of a stacked arrangement of two display panels 100, and for clarity of illustration, fig. 13 does not show the complete structure of the display device 200, and a person skilled in the art can obtain a schematic diagram of a display device 200 in which two display panels 100 are stacked in the first direction according to the combination of fig. 13 and 12. For example, the display module 200 is composed of two display panels 100 which are respectively bent, the gap between one display panel 100 and the other display panel 100 can be filled with the optical cement 44, the two display panels 100 are bonded by the filled optical cement 44, and then the whole display module 200 is formed after the module is formed.
Fig. 14 is a flowchart illustrating a manufacturing method of a display module according to an embodiment of the present disclosure, referring to fig. 12 and 14, based on the same inventive concept, the present disclosure further provides a manufacturing method of a display module 200 for the display module 200;
the manufacturing method comprises the following steps:
103, flexibly encapsulating the light-emitting layer 14 by using an encapsulation layer 15 to form a display panel 100;
Referring to fig. 12 and 14, in particular, the manufacturing method of the display module 200 includes: providing at least one array layer 13 through step 101, performing evaporation plating on the array layer 13 provided in step 101 to form a light emitting layer 14 through step 102, performing flexible packaging on the light emitting layer 14 through a packaging layer 15 to form a display panel 100 through step 103, bending the display panel 100 through a plurality of bending parts included on the display panel 100 in step 104, and fixing the bent display panel 100 through an optical adhesive 44; the flexible circuit board 34, the driving chip 33 and other components are bonded to the non-display area 31 of the display panel 100 in step 105, and finally the protective film 45 is attached to the surface of the display panel 100 in step 106, so as to form the whole display module 200.
The control main board 35 in the display device 200 provided by the present application can be disposed in the protective film 45, and the driving chip 33 can be disposed in the film where the optical adhesive 44 is disposed, and the driving chip 33 and the control main board 35 are electrically connected through the flexible circuit board 34 for transmitting the electrical signal in the display panel 100, so as to ensure a good display effect of the display device 200.
Fig. 15 is a simplified schematic diagram of fig. 12 according to an embodiment of the present disclosure, please refer to fig. 12 and 12, fig. 15 is a schematic diagram illustrating a bent strip-shaped display panel 100, wherein a portion of the first region 10 for fixing the first pixel units 12 (for example, including the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B) may be a transparent glass substrate, and since the first pixel units 12 are generally disposed on the same side of the transparent glass substrate when the strip-shaped display panel 100 is manufactured; therefore, after the display panel 100 is bent, the first pixel units 12 in the odd-numbered first regions 10 of the display panel will be located on the side of the transparent glass substrate away from the control main board 35, and the first pixel units 12 in the even-numbered first regions 10 will be located on the side of the transparent glass substrate facing the control main board 35. However, since the display panel 100 provided by the present application can at least realize the double-sided light emission along the first direction, the manufacturing process of the strip-shaped display panel 100 provided by the present application is simpler, and the display effect of the bent display panel 100 cannot be adversely affected after the display panel 100 forms the corresponding display module 200.
According to the embodiment, the display panel, the display module and the manufacturing method thereof provided by the invention at least realize the following beneficial effects:
the display panel comprises a plurality of first areas and second areas which are alternately arranged, orthographic projections of each two adjacent first areas in the stacking direction are at least partially overlapped after the display panel is bent by a plurality of bending areas (second areas), and the first areas are set to be transparent display areas; the pixels at the appointed positions in the first areas of different layers are lightened, so that the display picture has a depth-of-field effect, multiple display effects with different types of requirements are achieved, and 3D display with different display effects at multi-dimensional angles is achieved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (11)
1. The display panel is characterized by comprising a plurality of first areas and second areas which are alternately arranged, wherein at least part of the first areas are transparent display areas; wherein the second region is located between two adjacent first regions;
the display panel further comprises bending areas, each second area is reused as the bending area, at least part of orthographic projections of two adjacent first areas along a first direction are overlapped, and the first direction is the stacking direction of the two adjacent first areas.
2. The display panel according to claim 1, comprising a plurality of pixel units including a first pixel unit disposed in the first region;
any one of the first regions comprises a plurality of first pixel units arranged in an array, and the arrangement density of the first pixel units in any one of the first regions is the same.
3. The display panel according to claim 2, wherein a pitch between any two adjacent first pixel units in any one of the first regions is S1, and 5 μm ≦ S1 ≦ 5000 μm.
4. The display panel according to claim 1, comprising a plurality of pixel units including a first pixel unit disposed in the first region;
the orthographic projections of the first pixel units in the first area on a first light-emitting surface of the display panel are arranged in an array, and the first light-emitting surface is perpendicular to the first direction.
5. The display panel according to claim 4, wherein on the first light emitting surface, the distance between the orthographic projections of any two adjacent first pixel units is S2, 5 μm ≦ S2 ≦ 5000 μm.
6. The display panel according to claim 2 or 4, wherein the pixel unit further includes a second pixel unit disposed in the second region, and an arrangement density of the first pixel unit is greater than an arrangement density of the second pixel unit.
7. The display panel according to claim 1, wherein the display panel comprises an array layer, a light emitting layer, and an encapsulation layer, the light emitting layer being disposed between the array layer and the encapsulation layer; the light-emitting direction of the light-emitting layer at least comprises a first light-emitting direction and a second light-emitting direction, the first light-emitting direction is that the light-emitting layer faces the direction of the array layer, and the second light-emitting direction is that the light-emitting layer faces the direction of the packaging layer.
8. A display module, characterized in that the display module comprises a display panel according to any one of claims 1 to 7;
the display module comprises a display area and a non-display area, the first area comprises a first area provided with a first pixel unit and a second area surrounding the first area, and at least part of the second area is reused as the non-display area; and/or, the non-display area is located at least partially within the second area;
the display module further comprises a flexible circuit board and a driving chip, wherein the flexible circuit board and the driving chip are arranged in the non-display area.
9. The display module according to claim 8, further comprising an optical adhesive, wherein the optical adhesive is at least filled in a gap space between any two adjacent first areas along the first direction.
10. The display module according to claim 9, wherein the display module comprises a plurality of display panels stacked in a first direction, and the optical adhesive is filled between any two adjacent display panels.
11. A method for manufacturing a display module, which is used for the display module according to any one of claims 8-10;
the manufacturing method comprises the following steps:
providing an array layer;
evaporating a light emitting layer on the array layer;
carrying out flexible packaging on the light-emitting layer by using a packaging layer to form a display panel;
bending the display panel through a bending part, and fixing the bent display panel through optical cement;
binding a flexible circuit board and a driving chip on the display panel;
and attaching a protective film layer on the surface of the display panel.
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