Spliced screen, display driving method thereof and display device

Abstract

The invention discloses a spliced screen, a display driving method thereof and a display device, and relates to the technical field of display. The spliced screen comprises a cover plate; the display panels are arranged on one side of the cover plate, the display panels comprise a first display panel and a second display panel which are spliced with each other, the first display panel comprises a first display area and a first frame area, and the first frame area is located on the side, close to the second display panel, of the first display area; the second display panel comprises a second display area and a second frame area, and the second frame area is located on the side, close to the first display panel, of the second display area; in orthographic projection on the cover plate, at least one part of the first frame area is overlapped with the second display area, display light of the second display area can penetrate through the first frame area overlapped with the second display area, and the first display panel is located on the side, close to the cover plate, of the second display panel.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a spliced ​​screen and a display driving method and a display device thereof. Background Art

[0002] The splicing screen has the characteristics of large-screen display, multi-screen interaction, and flexible expansion, which can provide users with more shocking visual effects. The splicing screen is composed of multiple display panels, which include a display area and a non-display area outside the display area. Summary of the invention

[0003] According to a first aspect of the present disclosure, a spliced ​​screen is provided, comprising:

[0004] Cover plate; and

[0005] A plurality of display panels are arranged on one side of the cover plate, the plurality of display panels include a first display panel and a second display panel spliced ​​to each other, the first display panel includes a first display area and a first frame area, the first frame area is located on a side of the first display area close to the second display panel, the second display panel includes a second display area and a second frame area, the second frame area is located on a side of the second display area close to the first display panel;

[0006] In the orthographic projection on the cover plate, at least a portion of the first border area overlaps with the second display area, and the first border area overlapping with the second display area can transmit the display light of the second display area, and the first display panel is located on a side of the second display panel close to the cover plate.

[0007] In some embodiments, in an orthographic projection on the cover plate, the first display area is close to a boundary of the first frame area and is aligned with a boundary of the second display area close to the second frame area.

[0008] In some embodiments, in the orthographic projection on the cover plate, the transmittance of the first border area overlapping with the second display area is greater than or equal to 20%.

[0009] In some embodiments, the first border area includes a first routing line, the first routing line is used to transmit a power signal, the first routing line overlaps with the orthographic projection of the second display area on the cover plate, the main material of the first routing line is metal, and a plurality of openings separated from each other are provided on the first routing line, and the openings are used to pass the display light of the second display area.

[0010] In some embodiments, the second display area includes a plurality of pixel units arranged along a row direction and a column direction, and the pixel unit includes a plurality of light-emitting regions;

[0011] The plurality of openings are divided into a plurality of light-transmitting units, each of which includes at least one opening, and the plurality of light-transmitting units are arranged in an array along row and column directions.

[0012] In some embodiments, the center distance between two adjacent openings in the row direction is greater than at least one time the arrangement period of the pixel units in the row direction; and / or

[0013] The center distance between two adjacent openings in the column direction is greater than at least one time the arrangement period of the sub-pixels in the column direction.

[0014] In some embodiments, the plurality of light-emitting areas overlap with the orthographic projection of the same opening on the cover plate.

[0015] In some embodiments, the light emitting area overlaps with the orthographic projection of the opening on the cover plate in a one-to-one correspondence.

[0016] In some embodiments, in an orthographic projection on the cover plate, the overlapping openings have the same shape as the light emitting area.

[0017] In some embodiments, the light-transmitting units in two adjacent rows are staggered in the column direction.

[0018] In some embodiments, the first border area includes a second routing line, the second routing line is used to transmit a power signal, the second routing line overlaps with an orthographic projection of the second display area on the cover plate, and a main material of the second routing line is a transparent conductive material.

[0019] In some embodiments, the first border area includes a gate drive circuit, the gate drive circuit includes a plurality of gate drive signal lines, and in an orthographic projection on the cover plate, a gap width between two adjacent gate drive signal lines that overlap with the second display area is greater than or equal to 10 microns and less than or equal to 1000 microns.

[0020] In some embodiments, the first display panel is divided into a first overlap area and a first non-overlap area, the second display panel is divided into a second overlap area and a second non-overlap area, the orthographic projections of the first overlap area and the second overlap area on the cover plate coincide with each other, and at least one of the following film layers is stacked between the first overlap area and the second overlap area: a glue layer and a protective layer.

[0021] In some embodiments, the spliced ​​screen further includes:

[0022] A first filling layer is disposed between the second non-overlapping area and the cover plate, wherein a surface of the first filling layer close to the cover plate is flush with a surface of the first display panel close to the cover plate;

[0023] A first protective layer, comprising a first sub-protective layer and a second sub-protective layer, wherein the first sub-protective layer is arranged on a side of the first non-overlapping region away from the cover plate, and the second sub-protective layer is arranged between the first overlapping region and the second overlapping region, and the thickness of the first sub-protective layer is greater than that of the second sub-protective layer; and

[0024] The second protective layer is arranged on the side of the second overlapping area and the second non-overlapping area away from the cover plate, and the surface of the second protective layer away from the cover plate is flush with the surface of the first sub-protective layer away from the cover plate.

[0025] In some embodiments, the spliced ​​screen further includes:

[0026] A second filling layer is disposed between the second non-overlapping area and the cover plate, wherein a surface of the second filling layer close to the cover plate is flush with a surface of the first display panel close to the cover plate;

[0027] A third protective layer is arranged on a side of the first overlapping area and the first non-overlapping area away from the cover plate, and a surface of the third protective layer away from the cover plate is flush with a surface of the second filling layer away from the cover plate;

[0028] a third filling layer, disposed on a side of the third protective layer away from the first display panel, the orthographic projection of the third filling layer on the first display panel overlaps with the first non-overlapping area, and a surface of the third filling layer close to the cover plate is flush with a surface of the second display panel close to the cover plate; and

[0029] A fourth protective layer is arranged on the side of the second overlapping area and the second non-overlapping area away from the cover plate, and a surface of the fourth protective layer away from the cover plate is flush with a surface of the third filling layer away from the cover plate.

[0030] According to a second aspect of the present disclosure, a spliced ​​screen is provided, comprising:

[0031] Cover plate; and

[0032] A plurality of display panels are arranged on one side of the cover plate, the plurality of display panels include a first display panel and a second display panel spliced ​​to each other, the first display panel includes a first overlapping area and a first non-overlapping area, the second display panel includes a second overlapping area and a second non-overlapping area, the first overlapping area and the second overlapping area overlap with each other in terms of orthographic projection on the cover plate, and the first display panel is located on a side of the second display panel close to the cover plate;

[0033] Wherein, at least one of the following film layers is laminated between the first overlapping area and the second overlapping area: an adhesive layer and a protective layer.

[0034] In some embodiments, the adhesive layer includes a first adhesive layer and a second adhesive layer, and the first adhesive layer, the protective layer, and the second adhesive layer are stacked and arranged between the first overlapping area and the second overlapping area.

[0035] In some embodiments, the first display panel includes a first display area and a first frame area, the first frame area is located on a side of the first display area close to the second display panel, the second display panel includes a second display area and a second frame area, the second frame area is located on a side of the second display area close to the first display panel;

[0036] wherein the first overlapping area includes at least a portion of the first border area, and the second overlapping area includes at least a portion of the second border area; or

[0037] The first overlapping area includes a portion of the first display area close to the first border area and the first border area, and the second overlapping area includes a portion of the second display area close to the second border area and the second border area.

[0038] According to a third aspect of the present disclosure, a display device is provided, comprising a spliced ​​screen as described in any one of the items.

[0039] According to a first aspect of the present disclosure, a display driving method is provided, which is applied to the spliced ​​screen provided in any one of the first aspects, wherein the second display area is divided into a first sub-display area and a second sub-display area, and in an orthographic projection on the cover plate, the first sub-display area overlaps with the first frame area, and the second sub-display area does not overlap with the first frame area, and the display driving method includes:

[0040] When the spliced ​​screen displays a single grayscale image, the brightness of the first sub-display area is controlled to be greater than or equal to the brightness of the second sub-display area, and the brightness of the second sub-display area is controlled to be greater than the brightness of the first display area.

[0041] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the proportions in the drawings are only for illustration and do not represent the actual proportions.

[0043] Figure 1 A schematic structural diagram of a spliced ​​screen in the related art is shown;

[0044] Figure 2 A schematic cross-sectional structure diagram of a first spliced ​​screen example provided by the present disclosure is shown;

[0045] Figure 3 A schematic cross-sectional structure diagram of a second spliced ​​screen example provided by the present disclosure is shown;

[0046] Figure 4 A schematic diagram of the cross-sectional structure of the first border area is exemplarily shown;

[0047] Figure 5 A schematic diagram of the planar structure of the first display panel is exemplarily shown;

[0048] Figure 6 A schematic diagram of a first planar structure of a first wiring and a second display area is exemplarily shown;

[0049] Figure 7 A second planar structural schematic diagram of the first wiring and the second display area is exemplarily shown;

[0050] Figure 8 A third planar structural schematic diagram of the first wiring and the second display area is exemplarily shown;

[0051] Fig. 9 A fourth planar structural schematic diagram of the first wiring and the second display area is exemplarily shown;

[0052] Fig.10 A schematic cross-sectional structure diagram of a third spliced ​​screen example provided by the present disclosure is shown;

[0053] Fig.11 A schematic cross-sectional structure diagram of a fourth spliced ​​screen example provided by the present disclosure is shown. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0055] In the related art, the splicing screen has a large splicing seam at the splicing position of two adjacent display panels, which causes a visual sense of separation and destroys the continuity of the splicing screen display. Figure 1 Figure a in the figure shows a schematic diagram of the cross-sectional structure of a spliced ​​screen in the related art, and Figure b shows a schematic diagram of the planar structure of a spliced ​​screen in the related art. Figure 1 As shown, in the arrangement direction of the display panel PNL1 and the display panel PNL2, the width w1 of the non-display area between the display panel PNL1 and the display panel PNL2 is greater than or equal to the sum of the border width of the display panel PNL1, the physical seam width w0 and the border width of the display panel PNL2.

[0056] In order to reduce or eliminate the splicing seam, the present disclosure provides a splicing screen, such as Figure 2 or Figure 3 As shown, the spliced ​​screen includes: a cover plate 100; and a plurality of display panels 200, which are arranged on one side of the cover plate 100, the plurality of display panels 200 include a first display panel 210 and a second display panel 220 spliced ​​together, the first display panel 210 includes a first display area AA1 and a first border area BZ1, the first border area BZ1 is located on a side of the first display area AA1 close to the second display panel 220, the second display panel 220 includes a second display area AA2 and a second border area BZ2, the second border area BZ2 is located on a side of the second display area AA2 close to the first display panel 210, and the first display panel 210 is located on a side of the second display panel 220 close to the cover plate 100.

[0057] In the orthographic projection on the cover plate 100 , at least a portion of the first frame area BZ1 overlaps with the second display area AA2 , and the first frame area BZ1 overlapping with the second display area AA2 can transmit display light of the second display area AA2 .

[0058] like Figure 2 or Figure 3 As shown, the first display panel 210 and the second display panel 220 are arranged along the first direction f1.

[0059] The spliced ​​screen provided by the present disclosure has at least a portion of the first border area BZ1 overlapping with the second display area AA2, and the first border area BZ1 overlapping with the second display area AA2 can transmit the display light emitted from the second display area AA2, so that the first border area BZ1 can also display the picture, thereby reducing or eliminating the non-display area (i.e., the splicing seam) between the first display panel 210 and the second display panel 220, achieving a display effect with a narrow splicing seam or no splicing seam, which is conducive to realizing the integrated display of the spliced ​​screen.

[0060] In a specific implementation, part or all of the first border area BZ1 may be arranged to overlap with the orthographic projection of the second display area AA2 on the cover plate 100. That is, in the first direction f1, the width of the joint seam between the first display panel 210 and the second display panel 220 is greater than or equal to zero and smaller than the width of the first border area BZ1.

[0061] For example, in the orthographic projection on the cover plate 100, the transmittance of the first frame area BZ1 overlapping the second display area AA2 is greater than or equal to 20%, 30%, 40% or 50%, etc. It can be understood that the greater the transmittance of the first frame area BZ1, the more display light can pass through, and the better the display effect.

[0062] For example, Figure 2 or Figure 3 As shown, in the orthographic projection on the cover plate 100, the first display area AA1 is close to the boundary of the first frame area BZ1 and is aligned with the boundary of the second display area AA2 close to the second frame area BZ2. In this case, in the first direction f1, the width of the joint seam between the first display panel 210 and the second display panel 220 is zero, achieving a display effect without joint seams.

[0063] Exemplarily, the display panel 200 may be a liquid crystal display panel, an electronic paper display panel, or a self-luminous display panel, which is not limited in the present disclosure. The self-luminous display panel has a built-in light-emitting device, and the light-emitting device may be, for example, an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), a sub-millimeter light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED).

[0064] In the case where the display panel 200 is a self-luminous display panel, the first display area AA1 includes a plurality of light-emitting devices, which are driven by a pixel driving circuit to emit light. Accordingly, the first border area BZ1 includes a plurality of wirings connected to the pixel driving circuit, such as Figure 4 and Figure 5 As shown, the multiple wirings in the first border area BZ1 include a high-level power signal line VDD, a low-level power signal line VSS, and a gate drive signal line GOA in a gate drive circuit.

[0065] In order to improve the transmittance of the first border area BZ1, illustratively, as Figure 5 As shown, the first border area BZ1 includes a first routing line ZX1, which is used to transmit a power signal. The first routing line ZX1 overlaps with the orthographic projection of the second display area AA2 on the cover plate 100, and the main material of the first routing line ZX1 is an opaque metal material.

[0066] The first wiring ZX1 is, for example, a high-level power signal line VDD, and may also be a power signal line such as a low-level power signal line VSS.

[0067] For example, Figures 6 to 9 As shown in a in any of the figures, a plurality of openings HL separated from each other are provided on the first wiring ZX1 , and the openings HL are used to transmit display light of the second display area AA2 .

[0068] Since the opening HL on the first wiring ZX1 can transmit the display light of the second display area AA2, the first border area BZ1 overlapping with the second display area AA2 can display images.

[0069] For example, Figures 6 to 9 As shown in a of any of the figures, the orthographic projection shape of the opening HL on the cover plate 100 includes at least one of the following: regular or irregular shapes such as strips, polygons, circles, ellipses, and sectors. The polygons may include, for example, triangles, rectangles, squares, trapezoids, parallelograms, rhombuses, pentagons, and hexagons.

[0070] For example, Figures 6 to 9 As shown in b of any of the figures, the second display area AA2 includes a plurality of pixel units PX arranged along the row direction fh and the column direction fv, and the pixel unit PX includes a plurality of light emitting areas EMA, such as 3 or 4 (such as Figures 6 to 9 ) luminous area EMA shown.

[0071] For example, the multiple light-emitting areas EMA located in the same pixel unit PX may include a red light-emitting area, a green light-emitting area, and a blue light-emitting area, which is not limited in the present disclosure.

[0072] For example, Figures 6 to 9 As shown in a in any of the figures, the multiple openings HL are divided into multiple light-transmitting units TU. The light-transmitting unit TU includes at least one opening HL. The multiple light-transmitting units TU are arranged in an array along the row direction fh and the column direction fv.

[0073] Exemplarily, a light transmission unit TU may include an opening HL, such as Figure 6 or Figure 7 A light transmission unit TU may also include a plurality of openings HL, such as Figure 8 or Fig. 9 The four openings HL shown in a.

[0074] For example, Figures 6 to 9 As shown in a in any figure, two adjacent rows of light-transmitting units TU are staggered in the column direction fv. By staggering the two rows of light-transmitting units TU, it is beneficial to improve the display uniformity of the first border area BZ1 and avoid the pattern on the first trace ZX1 being visible to the naked eye. It should be noted that two adjacent rows of light-transmitting units TU can also be aligned in the column direction fv, and this is not limited in the present disclosure.

[0075] For example, Figure 6 or Figure 7 As shown, the center distance between two adjacent openings HL in the row direction fh is greater than at least one time the arrangement period of the pixel units PX in the row direction fh.

[0076] For example, Figure 6 or Figure 7 As shown, the center distance between two openings HL adjacently arranged in the column direction fv is greater than at least one time the arrangement period of the sub-pixels in the column direction fv.

[0077] For example, Figure 6 or Figure 7 As shown, the plurality of light-emitting areas EMA overlap with the orthographic projection of the same opening HL on the cover plate 100 .

[0078] Exemplarily, in the first direction f1, the width of the first trace ZX1 is, for example, 1 mm, the size of the opening HL is greater than or equal to 10 microns and less than or equal to 500 microns, and the center spacing of the opening HL is greater than or equal to 10 microns and less than or equal to 1000 microns.

[0079] Illustratively, in the second direction f2, the size of the opening HL is greater than or equal to 10 microns and less than or equal to 500 microns, the center spacing of the opening HL is greater than or equal to 10 microns and less than or equal to 1000 microns, and the second direction f2 is perpendicular to the first direction f1.

[0080] Exemplarily, the first direction f1 is parallel to the column direction fv, and the second direction f2 is parallel to the row direction fh.

[0081] For example, Figure 8 or Fig. 9 As shown, the light emitting area EMA overlaps with the orthographic projection of the opening HL on the cover plate 100 in a one-to-one correspondence.

[0082] For example, Figure 8 or Fig. 9 As shown, in the orthographic projection on the cover plate 100 , the overlapping openings HL have the same shape as the light emitting area EMA.

[0083] To improve the transmittance of the first trace ZX1, illustratively, in the orthographic projection on the cover 100, the opening HL covers the light emitting area EMA, that is, the outline of the opening HL is aligned with the outline of the light emitting area EMA, or expands relative to the outline of the light emitting area EMA.

[0084] In order to improve the transmittance of the first border area BZ1, illustratively, as Figure 5 As shown, the first border area BZ1 includes a second line ZX2, which is used to transmit a power signal, and the second line ZX2 overlaps with the orthographic projection of the second display area AA2 on the cover plate 100. The main material of the second line ZX2 is a transparent conductive material.

[0085] Since the main material of the second routing line ZX2 is a transparent conductive material, the second routing line ZX2 can transmit the display light of the second display area AA2, so that the first border area BZ1 overlapping with the second display area AA2 can display the picture.

[0086] The second wiring ZX2 is, for example, a high-level power signal line VDD, and may also be a power signal line such as a low-level power signal line VSS.

[0087] For example, the transparent conductive material may include metal oxides such as ITO, IZO, IGZO, IGO, and ZTO, and may also include nano silver wires, etc. The use of metal oxides also improves the oxidation resistance of the second wiring ZX2.

[0088] like Figure 5 As shown, the first display panel 210 also includes a binding area BD located on one side of the first display area AA1, and the binding area BD is used to connect an external driving circuit. In order to improve the transmittance of the first border area BZ1, exemplarily, the binding area BD and the first border area BZ1 are located on different sides of the first display area AA1.

[0089] For example, in Figure 5In the embodiment, the binding area BD is located at the lower side of the first display area AA1, and the first frame area BZ1 can be located at any side except the lower side, such as the upper side, the left side or the right side (such as Figure 5 shown).

[0090] In order to improve the transmittance of the first border area BZ1, illustratively, as Figure 5 As shown, the first border area BZ1 includes a gate drive circuit, and the gate drive circuit includes a plurality of gate drive signal lines GOA. In the orthographic projection on the cover plate 100, the gap width between two adjacent gate drive signal lines GOA that overlap with the second display area AA2 is greater than or equal to 10 microns and less than or equal to 1000 microns.

[0091] By setting the gap width between the gate drive signal lines GOA within the above range, the gap between the gate drive signal lines GOA can transmit the display light of the second display area AA2, so that the first border area BZ1 overlapping with the second display area AA2 can display the picture.

[0092] For example, Figure 2 or Figure 3 As shown, the first display panel 210 is divided into a first overlapping area 211 and a first non-overlapping area 212 , and the second display panel 220 is divided into a second overlapping area 221 and a second non-overlapping area 222 . The orthographic projections of the first overlapping area 211 and the second overlapping area 221 on the cover plate 100 coincide.

[0093] exist Figure 2 and Figure 3 In the figure, the first overlapping area 211 includes a portion of the first display area AA1 close to the first border area BZ1 and the first border area BZ1, the second overlapping area 221 includes a portion of the second display area AA2 close to the second border area BZ2 (i.e., the first sub-display area AA21) and the second border area BZ2, and the second non-overlapping area 222 is the second sub-display area AA22.

[0094] For example, Figure 2 or Figure 3 As shown, at least one of the following film layers is laminated between the first overlapping area 211 and the second overlapping area 221 : an adhesive layer 300 and a protective layer 400 .

[0095] For example, Figure 2 or Figure 3 As shown, the first adhesive layer 310 , the protective layer 400 and the second adhesive layer 320 are stacked between the first overlapping area 211 and the second overlapping area 221 , and the first adhesive layer 310 is disposed close to the first overlapping area 211 .

[0096] In order to fill the height difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 2 As shown, the spliced ​​screen also includes: a first filling layer 501, which is arranged between the second non-overlapping area 222 and the cover plate 100, and the surface of the first filling layer 501 close to the cover plate 100 is flush with the surface of the first display panel 210 close to the cover plate 100; a first protective layer 410, including a first sub-protective layer 411 and a second sub-protective layer 412, the first sub-protective layer 411 is arranged on the side of the first non-overlapping area 212 away from the cover plate 100, the second sub-protective layer 412 is arranged between the first overlapping area 211 and the second overlapping area 221, and the thickness of the first sub-protective layer 411 is greater than the thickness of the second sub-protective layer 412; and a second protective layer 420, which is arranged on the side of the second overlapping area 221 and the second non-overlapping area 222 away from the cover plate 100, and the surface of the second protective layer 420 away from the cover plate 100 is flush with the surface of the first sub-protective layer 411 away from the cover plate 100.

[0097] The first protective layer 410 constitutes a back protective film of the first display panel 210 , and the second protective layer 420 constitutes a back protective film of the second display panel 220 .

[0098] For example, Figure 2 As shown, the spliced ​​screen also includes: a first adhesive layer 601, arranged between the first protective layer 410 and the first display panel 210; a second adhesive layer 602, arranged between the second protective layer 420 and the second display panel 220; and a first optical adhesive layer OCA1, arranged between the second display panel 220 and the second sub-protective layer 412, and between the second display panel 220 and the first filling layer 501.

[0099] exist Figure 2 In the embodiment, the second sub-protective layer 412 is a protective layer 400 disposed between the first overlap area 211 and the second overlap area 221. The first adhesive layer 601 disposed between the first overlap area 211 and the second overlap area 221 constitutes the first adhesive layer 310, and the first optical adhesive layer OCA1 disposed between the first overlap area 211 and the second overlap area 221 constitutes the second adhesive layer 320.

[0100] In order to fill the step difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 2 As shown, the thickness of the first filling layer 501 is equal to the sum of the thicknesses of the first display panel 210, the first adhesive layer 601 and the second sub-protective layer 412. The thickness of the first sub-protective layer 411 is equal to the sum of the thicknesses of the second sub-protective layer 412, the first optical adhesive layer OCA1, the second display panel 220, the second adhesive layer 602 and the second protective layer 420.

[0101] In order to reduce the step difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 2 As shown, the thickness of the first adhesive layer 601 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the second adhesive layer 602 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the second sub-protective layer 412 is greater than or equal to 10 microns and less than or equal to 75 microns. The thickness of the second protective layer 420 is greater than or equal to 10 microns and less than or equal to 75 microns. It can be understood that the smaller the thickness of the first adhesive layer 601, the second adhesive layer 602, the second sub-protective layer 412 and the second protective layer 420, the smaller the step difference between the first display panel 210 and the second display panel 220.

[0102] In order to fill the height difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 3 As shown, the spliced ​​screen also includes: a second filling layer 502, which is arranged between the second non-overlapping area 222 and the cover plate 100, and the surface of the second filling layer 502 close to the cover plate 100 is flush with the surface of the first display panel 210 close to the cover plate 100; a third protective layer 430, which is arranged on the first overlapping area 211 and the side of the first non-overlapping area 212 away from the cover plate 100, and the surface of the third protective layer 430 away from the cover plate 100 is flush with the surface of the second filling layer 502 away from the cover plate 100; a third filling layer 503, which is arranged on the third protective layer 430, Layer 430 is on the side away from the first display panel 210, the orthographic projection of the third filling layer 503 on the first display panel 210 overlaps with the first non-overlap area 212, and the surface of the third filling layer 503 close to the cover plate 100 is flush with the surface of the second display panel 220 close to the cover plate 100; and the fourth protective layer 440 is arranged on the side of the second overlap area 221 and the second non-overlap area 222 away from the cover plate 100, and the surface of the fourth protective layer 440 away from the cover plate 100 is flush with the surface of the third filling layer 503 away from the cover plate 100.

[0103] The third protective layer 430 constitutes a back protective film of the first display panel 210 , and the fourth protective layer 440 constitutes a back protective film of the second display panel 220 .

[0104] For example, Figure 3 As shown, the spliced ​​screen further includes: a third adhesive layer 603 disposed between the third protective layer 430 and the first display panel 210 ; and a fourth adhesive layer 604 disposed between the fourth protective layer 440 and the second display panel 220 .

[0105] By setting the same structure on the back side of the first display panel 210 and the back side of the second display panel 220, for example, the structure set on the back side of the first display panel 210 includes a third adhesive layer 603 and a third protective layer 430 that entirely cover the first display panel 210, and the structure set on the back side of the second display panel 220 includes a fourth adhesive layer 604 and a fourth protective layer 440 that entirely cover the second display panel 220, the structural consistency of the first display panel 210 and the second display panel 220 can be improved, thereby simplifying the process.

[0106] For example, Figure 3 As shown, the spliced ​​screen further includes: a second optical adhesive layer OCA2, which is arranged between the second non-overlapping area 222 and the second filling layer 502, between the third protection layer 430 and the third filling layer 503, and between the third protection layer 430 and the second overlapping area 221.

[0107] The process can be further simplified by providing an integrated second optical adhesive layer OCA2 between the second non-overlapping area 222 and the second filling layer 502 , between the third protective layer 430 and the third filling layer 503 , and between the third protective layer 430 and the second overlapping area 221 .

[0108] exist Figure 3 , the third protective layer 430 overlapping the second overlap area 221 is the protective layer 400 disposed between the first overlap area 211 and the second overlap area 221. The third adhesive layer 603 between the first overlap area 211 and the second overlap area 221 constitutes the first adhesive layer 310, and the second optical adhesive layer OCA2 between the first overlap area 211 and the second overlap area 221 constitutes the second adhesive layer 320.

[0109] In order to fill the step difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 3 As shown, the thickness of the second filling layer 502 is equal to the sum of the thicknesses of the first display panel 210, the third adhesive layer 603 and the third protective layer 430, and the thickness of the third filling layer 503 is equal to the sum of the thicknesses of the second display panel 220, the fourth adhesive layer 604 and the fourth protective layer 440. The thickness of the second filling layer 502 and the thickness of the third filling layer 503 may be the same.

[0110] In order to reduce the step difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 3As shown, the thickness of the third adhesive layer 603 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the fourth adhesive layer 604 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the third protective layer 430 is greater than or equal to 10 microns and less than or equal to 75 microns. The thickness of the fourth protective layer 440 is greater than or equal to 10 microns and less than or equal to 75 microns. It can be understood that the smaller the thickness of the third adhesive layer 603, the third protective layer 430, the fourth adhesive layer 604 and the fourth protective layer 440, the smaller the step difference between the first display panel 210 and the second display panel 220.

[0111] For example, Figure 2 or Figure 3 As shown, a first polarizer POL is further disposed on the first display panel 210 and the first filling layer 501 on one side close to the cover plate 100 , and the first polarizer POL is adhered to the cover plate 100 via a third optical adhesive layer OCA3.

[0112] For example, Figure 2 or Figure 3 As shown, the spliced ​​screen also includes a fifth adhesive layer 605 and a support plate 700 which are stacked. Figure 2 In the embodiment, the fifth adhesive layer 605 and the support plate 700 are stacked and arranged on the side of the first sub-protection layer 411 and the second protection layer 420 away from the cover plate 100, and the support plate 700 is arranged on the side of the fifth adhesive layer 605 away from the cover plate 100. Figure 3 In the embodiment, the fifth adhesive layer 605 and the support plate 700 are stacked on the side of the third filling layer 503 and the fourth protective layer 440 away from the cover plate 100 , and the support plate 700 is arranged on the side of the fifth adhesive layer 605 away from the cover plate 100 .

[0113] Exemplarily, the material of the cover plate 100 includes transparent materials such as glass, polycarbonate, polyethylene terephthalate, polyimide, triacetyl cellulose, etc., and the thickness of the cover plate 100 ranges from 30 to 2000 micrometers, for example.

[0114] Exemplarily, the materials of the first optical adhesive layer OCA1, the second optical adhesive layer OCA2 and the third optical adhesive layer OCA3 independently include optical adhesive materials such as ultraviolet adhesive and acrylic, and the thickness ranges from 25 to 300 micrometers, for example.

[0115] Exemplarily, the materials of the first adhesive layer 601 , the second adhesive layer 602 , the third adhesive layer 603 , the fourth adhesive layer 604 and the fifth adhesive layer 605 independently include optical adhesive materials such as UV adhesive and acrylic, and the thickness ranges from 25 to 300 microns, for example.

[0116] Exemplarily, the support plate 700 includes a metal plate such as stainless steel and aluminum, and the thickness ranges from 100 to 2000 microns.

[0117] For example, the material of the first filling layer 501 may include transparent materials such as glass, polycarbonate, polyethylene terephthalate, polyimide, triacetyl cellulose, etc. The material of the first filling layer 501 may be the same as that of the cover plate 100 .

[0118] The present disclosure provides a splicing screen, such as Figure 2 , Figure 3 , Fig.10 as well as Fig.11 As shown in any one of the figures, the spliced ​​screen includes: a cover plate 100; and a plurality of display panels 200, which are arranged on one side of the cover plate 100, the plurality of display panels 200 include a first display panel 210 and a second display panel 220 spliced ​​together, the first display panel 210 includes a first overlapping area 211 and a first non-overlapping area 212, the second display panel 220 includes a second overlapping area 221 and a second non-overlapping area 222, the orthographic projections of the first overlapping area 211 and the second overlapping area 221 on the cover plate 100 coincide, and the first display panel 210 is located on the side of the second display panel 220 close to the cover plate 100.

[0119] Among them, at least one of the following film layers is laminated between the first overlapping area 211 and the second overlapping area 221 : an adhesive layer 300 and a protective layer 400 .

[0120] Exemplarily, the adhesive layer 300 includes a first adhesive layer 310 and a second adhesive layer 320 . The first adhesive layer 310 , the protective layer 400 and the second adhesive layer 320 are stacked between the first overlapping area 211 and the second overlapping area 221 . The first adhesive layer 310 is disposed close to the first overlapping area 211 .

[0121] like Figure 2 , Figure 3 , Fig.10 as well as Fig.11 As shown in any one of the figures, the first display panel 210 includes a first display area AA1 and a first border area BZ1, the first border area BZ1 is located on a side of the first display area AA1 close to the second display panel 220, and the second display panel 220 includes a second display area AA2 and a second border area BZ2, the second border area BZ2 is located on a side of the second display area AA2 close to the first display panel 210.

[0122] For example, Fig.10 or Fig.11As shown, the first overlap area 211 includes a part or all of the first border area BZ1, and the second overlap area 221 includes a part or all of the second border area BZ2. In this case, in the first direction f1, the width of the joint seam between the first display panel 210 and the second display panel 220 is greater than or equal to the width of the first border area BZ1, and less than the sum of the widths of the first border area BZ1 and the second border area BZ2.

[0123] exist Fig.10 and Fig.11 In the embodiment, the inner boundary of the first border area BZ1 close to the first display area AA1 is aligned with the outer boundary of the second border area BZ2 away from the second display area AA2. In this case, in the first direction f1, the width of the joint seam between the first display panel 210 and the second display panel 220 is equal to the width of the first border area BZ1.

[0124] For example, Figure 2 or Figure 3 As shown, the first overlap area 211 includes a portion of the first display area AA1 close to the first frame area BZ1 and the first frame area BZ1, and the second overlap area 221 includes a portion of the second display area AA2 close to the second frame area BZ2 (i.e., the first sub-display area AA21) and the second frame area BZ2. Furthermore, the first frame area BZ1 overlapping with the second display area AA2 can be set to be able to transmit the display light of the second display area AA2, so that the splicing seam can be further reduced.

[0125] exist Figure 2 and Figure 3 In the embodiment, the first display area AA1 is close to the boundary of the first frame area BZ1 and is aligned with the boundary of the second display area AA2 close to the second frame area BZ2. In this case, in the first direction f1, the width of the joint seam between the first display panel 210 and the second display panel 220 is zero, achieving a seamless display effect.

[0126] In order to fill the height difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 2 or Fig.10As shown, the spliced ​​screen also includes: a first filling layer 501, which is arranged between the second non-overlapping area 222 and the cover plate 100, and the surface of the first filling layer 501 close to the cover plate 100 is flush with the surface of the first display panel 210 close to the cover plate 100; a first protective layer 410, including a first sub-protective layer 411 and a second sub-protective layer 412, the first sub-protective layer 411 is arranged on the side of the first non-overlapping area 212 away from the cover plate 100, the second sub-protective layer 412 is arranged between the first overlapping area 211 and the second overlapping area 221, and the thickness of the first sub-protective layer 411 is greater than the thickness of the second sub-protective layer 412; and a second protective layer 420, which is arranged on the side of the second overlapping area 221 and the second non-overlapping area 222 away from the cover plate 100, and the surface of the second protective layer 420 away from the cover plate 100 is flush with the surface of the first sub-protective layer 411 away from the cover plate 100.

[0127] The first protective layer 410 constitutes a back protective film of the first display panel 210 , and the second protective layer 420 constitutes a back protective film of the second display panel 220 .

[0128] For example, Figure 2 or Fig.10 As shown, the spliced ​​screen also includes: a first adhesive layer 601, arranged between the first protective layer 410 and the first display panel 210; a second adhesive layer 602, arranged between the second protective layer 420 and the second display panel 220; and a first optical adhesive layer OCA1, arranged between the second display panel 220 and the second sub-protective layer 412, and between the second display panel 220 and the first filling layer 501.

[0129] exist Figure 2 or Fig.10 In the embodiment, the second sub-protective layer 412 is a protective layer 400 disposed between the first overlap area 211 and the second overlap area 221. The first adhesive layer 601 disposed between the first overlap area 211 and the second overlap area 221 constitutes the first adhesive layer 310, and the first optical adhesive layer OCA1 disposed between the first overlap area 211 and the second overlap area 221 constitutes the second adhesive layer 320.

[0130] For example, Figure 2 or Fig.10 As shown, the thickness of the first filling layer 501 is equal to the sum of the thicknesses of the first display panel 210, the first adhesive layer 601 and the second sub-protective layer 412. The thickness of the first sub-protective layer 411 is equal to the sum of the thicknesses of the second sub-protective layer 412, the first optical adhesive layer OCA1, the second display panel 220, the second adhesive layer 602 and the second protective layer 420.

[0131] In order to reduce the step difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 2 or Fig.10 As shown, the thickness of the first adhesive layer 601 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the second adhesive layer 602 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the second sub-protective layer 412 is greater than or equal to 10 microns and less than or equal to 75 microns. The thickness of the second protective layer 420 is greater than or equal to 10 microns and less than or equal to 75 microns. It can be understood that the smaller the thickness of the first adhesive layer 601, the second adhesive layer 602, the second sub-protective layer 412 and the second protective layer 420, the smaller the step difference between the first display panel 210 and the second display panel 220.

[0132] In order to fill the height difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 3 or Fig.11 As shown, the spliced ​​screen also includes: a second filling layer 502, which is arranged between the second non-overlapping area 222 and the cover plate 100, and the surface of the second filling layer 502 close to the cover plate 100 is flush with the surface of the first display panel 210 close to the cover plate 100; a third protective layer 430, which is arranged on the first overlapping area 211 and the side of the first non-overlapping area 212 away from the cover plate 100, and the surface of the third protective layer 430 away from the cover plate 100 is flush with the surface of the second filling layer 502 away from the cover plate 100; a third filling layer 503, which is arranged on the third protective layer 430, Layer 430 is on the side away from the first display panel 210, the orthographic projection of the third filling layer 503 on the first display panel 210 overlaps with the first non-overlap area 212, and the surface of the third filling layer 503 close to the cover plate 100 is flush with the surface of the second display panel 220 close to the cover plate 100; and the fourth protective layer 440 is arranged on the side of the second overlap area 221 and the second non-overlap area 222 away from the cover plate 100, and the surface of the fourth protective layer 440 away from the cover plate 100 is flush with the surface of the third filling layer 503 away from the cover plate 100.

[0133] The third protective layer 430 constitutes a back protective film of the first display panel 210 , and the fourth protective layer 440 constitutes a back protective film of the second display panel 220 .

[0134] For example, Figure 3 or Fig.11 As shown, the spliced ​​screen further includes: a third adhesive layer 603 disposed between the third protective layer 430 and the first display panel 210 ; and a fourth adhesive layer 604 disposed between the fourth protective layer 440 and the second display panel 220 .

[0135] By setting the same structure on the back side of the first display panel 210 and the back side of the second display panel 220, for example, the structure set on the back side of the first display panel 210 includes a third adhesive layer 603 and a third protective layer 430 that entirely cover the first display panel 210, and the structure set on the back side of the second display panel 220 includes a fourth adhesive layer 604 and a fourth protective layer 440 that entirely cover the second display panel 220, the structural consistency of the first display panel 210 and the second display panel 220 can be improved, thereby simplifying the process.

[0136] For example, Figure 3 or Fig.11 As shown, the spliced ​​screen further includes: a second optical adhesive layer OCA2, which is arranged between the second non-overlapping area 222 and the second filling layer 502, between the third protection layer 430 and the third filling layer 503, and between the third protection layer 430 and the second overlapping area 221.

[0137] The process can be further simplified by providing an integrated second optical adhesive layer OCA2 between the second non-overlapping area 222 and the second filling layer 502 , between the third protective layer 430 and the third filling layer 503 , and between the third protective layer 430 and the second overlapping area 221 .

[0138] exist Figure 3 or Fig.11 , the third protective layer 430 overlapping the second overlap area 221 is the protective layer 400 disposed between the first overlap area 211 and the second overlap area 221. The third adhesive layer 603 between the first overlap area 211 and the second overlap area 221 constitutes the first adhesive layer 310, and the second optical adhesive layer OCA2 between the first overlap area 211 and the second overlap area 221 constitutes the second adhesive layer 320.

[0139] For example, Figure 3 or Fig.11 As shown, the thickness of the second filling layer 502 is equal to the sum of the thicknesses of the first display panel 210, the third adhesive layer 603 and the third protective layer 430, and the thickness of the third filling layer 503 is equal to the sum of the thicknesses of the second display panel 220, the fourth adhesive layer 604 and the fourth protective layer 440. The thickness of the second filling layer 502 and the thickness of the third filling layer 503 may be the same.

[0140] In order to reduce the step difference between the first display panel 210 and the second display panel 220, illustratively, as Figure 3 or Fig.11As shown, the thickness of the third adhesive layer 603 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the fourth adhesive layer 604 is greater than or equal to 10 microns and less than or equal to 50 microns. The thickness of the third protective layer 430 is greater than or equal to 10 microns and less than or equal to 75 microns. The thickness of the fourth protective layer 440 is greater than or equal to 10 microns and less than or equal to 75 microns. It can be understood that the smaller the thickness of the third adhesive layer 603, the third protective layer 430, the fourth adhesive layer 604 and the fourth protective layer 440, the smaller the step difference between the first display panel 210 and the second display panel 220.

[0141] For example, Fig.10 or Fig.11 As shown, ink 800 may be further provided between the cover plate 100 and the third optical adhesive layer OCA3. In the orthographic projection on the cover plate 100, the ink 800 at least covers the overlapping area of ​​the first overlapping area 211 and the second overlapping area 221. The ink 800 is used to shield the overlapping area.

[0142] The present disclosure also provides a display device, comprising the spliced ​​screen provided in any exemplary embodiment.

[0143] Those skilled in the art can understand that the display device provided by the present disclosure has the advantages of the above-mentioned spliced ​​screen.

[0144] The display device provided by the present disclosure can be: a display module, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a car display device, a smart watch, a fitness wristband, a personal digital assistant, or any other product or component with a display function.

[0145] The present disclosure provides a display driving method, which is applied to a spliced ​​screen provided in any exemplary embodiment. Figure 2 or Figure 3 As shown, the second display area AA2 is divided into a first sub-display area AA21 and a second sub-display area AA22. In the orthographic projection on the cover plate 100, the first sub-display area AA21 overlaps with the first border area BZ1, and the second sub-display area AA22 does not overlap with the first border area BZ1. The display driving method includes: when the spliced ​​screen displays a single grayscale image, controlling the brightness of the first sub-display area AA21 to be greater than or equal to the brightness of the second sub-display area AA22, and controlling the brightness of the second sub-display area AA22 to be greater than the brightness of the first display area AA1.

[0146] like Figure 2 or Figure 3As shown, since a first border area BZ1 is provided between the first sub-display area AA21 and the cover plate 100, and a filling structure 501 / 502 is provided between the second sub-display area AA22 and the cover plate 100, that is, the structures between the first sub-display area AA21, the second sub-display area AA22 and the first display area AA1 and the cover plate 100 are different, the transmittances of display light emitted by the first sub-display area AA21, the second sub-display area AA22 and the first display area AA1 are different, and the transmittance of display light emitted by the first display area AA1 is greater than the transmittance of display light emitted by the second sub-display area AA22, and the transmittance of display light emitted by the second sub-display area AA22 is greater than or equal to the transmittance of display light emitted by the first sub-display area AA21.

[0147] When the spliced ​​screen displays a single grayscale image, by controlling the brightness of the first sub-display area AA21 to be greater than or equal to the brightness of the second sub-display area AA22, and the brightness of the second sub-display area AA22 to be greater than the brightness of the first display area AA1, it is beneficial to improve the uniformity of the image display of the spliced ​​screen.

[0148] For example, the brightness of the first sub display area AA21, the second sub display area AA22 and the first display area AA1 can be adjusted in the same proportion according to the transmittance ratio of the display light emitted by the first sub display area AA21, the second sub display area AA22 and the first display area AA1.

[0149] For example, the transmittance of the first sub-display area AA21 is 1 / A of the transmittance of the first display area AA1, and the transmittance of the second sub-display area AA22 is 1 / B of the transmittance of the first display area AA1. When the spliced ​​screen displays a single grayscale image, the brightness of the first sub-display area AA21 can be controlled to be A times the brightness of the first display area AA1, and the brightness of the second sub-display area AA22 can be controlled to be B times the brightness of the first display area AA1.

[0150] In the present disclosure, “plurality” means two or more, and “at least one” means one or more, unless otherwise clearly and specifically defined.

[0151] In the present disclosure, the orientation or positional relationship indicated by the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0152] In this disclosure, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, product or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, commodity or device comprising the element.

[0153] References in this disclosure to "one embodiment", "some embodiments", "exemplary embodiments", "one or more embodiments", "example", "an example", "some examples", etc. are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the particular features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0154] In the present disclosure, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0155] In this specification, "electrically connected" and "coupled" include the situation where the components are connected together through an element having some electrical function. There is no particular limitation on the "element having some electrical function" as long as it can transmit and receive electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

[0156] In this specification, the term "same-layer arrangement" refers to a structure formed by patterning two (or more) structures through the same patterning process, and their materials may be the same or different. For example, the materials of the precursors forming the multiple structures arranged in the same layer are the same, and the materials finally formed may be the same or different.

[0157] The polygon in this specification is not a strict polygon, and can be an approximate triangle, rectangle, trapezoid, pentagon or hexagon, etc. There can be some small deformations caused by tolerances, and there can be chamfers, rounded corners, arc edges and deformations.

[0158] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0159] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0160] The use of "for" or "configured to" in this disclosure is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0161] As used in this disclosure, "about," "substantially," or "approximately" includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0162] As used in the present disclosure, "parallel", "perpendicular", "equal", and "level" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 10° or 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity can also be, for example, a deviation within 10° or 5°.

[0163] "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality can be, for example, the difference between the two equals is less than or equal to 5% of either one. "Flush" includes absolute flush and approximate flush, wherein the acceptable deviation range of approximate flush can be, for example, the distance between the two flushes is less than or equal to 5% of either one.

[0164] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0165] The present disclosure describes exemplary embodiments with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown in the present disclosure, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0166] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A splicing screen, comprising: Cover plate; as well as A plurality of display panels are arranged on one side of the cover plate, the plurality of display panels include a first display panel and a second display panel spliced ​​to each other, the first display panel includes a first display area and a first frame area, the first frame area is located on a side of the first display area close to the second display panel, the second display panel includes a second display area and a second frame area, the second frame area is located on a side of the second display area close to the first display panel; In the orthographic projection on the cover plate, at least a portion of the first border area overlaps with the second display area, and the first border area overlapping with the second display area can transmit the display light of the second display area, and the first display panel is located on a side of the second display panel close to the cover plate.

2. The splicing screen according to claim 1, wherein: In the orthographic projection on the cover plate, the first display area is close to a boundary of the first frame area and is aligned with the boundary of the second display area close to the second frame area.

3. The spliced ​​screen according to claim 1, wherein: In the orthographic projection on the cover plate, the transmittance of the first frame area overlapping with the second display area is greater than or equal to 20%.

4. The spliced ​​screen according to claim 1, wherein: The first border area includes a first routing line, which is used to transmit a power signal. The first routing line overlaps with the orthographic projection of the second display area on the cover plate. The main material of the first routing line is metal. The first routing line is provided with a plurality of openings separated from each other, and the openings are used to pass the display light of the second display area.

5. The spliced ​​screen according to claim 4, wherein: The second display area includes a plurality of pixel units arranged along a row direction and a column direction, and the pixel unit includes a plurality of light-emitting areas; The plurality of openings are divided into a plurality of light-transmitting units, each of which includes at least one opening, and the plurality of light-transmitting units are arranged in an array along row and column directions.

6. The spliced ​​screen according to claim 5, wherein: The center distance between two adjacent openings in the row direction is greater than at least one time of the arrangement period of the pixel units in the row direction; and / or The center distance between two adjacent openings in the column direction is greater than at least one time the arrangement period of the sub-pixels in the column direction.

7. The spliced ​​screen according to claim 5, wherein: The plurality of light-emitting areas overlap with the orthographic projection of the same opening on the cover plate.

8. The spliced ​​screen according to claim 5, wherein: The light emitting area overlaps with the orthographic projection of the opening on the cover plate in a one-to-one correspondence.

9. The spliced ​​screen according to claim 8, wherein: In the orthographic projection on the cover plate, the overlapping openings have the same shape as the light-emitting area.

10. The spliced ​​screen according to claim 5, wherein: The light-transmitting units in two adjacent rows are staggered in the column direction.

11. The spliced ​​screen according to claim 1, wherein: The first frame area includes a second routing line, the second routing line is used to transmit a power signal, the second routing line overlaps with the orthographic projection of the second display area on the cover plate, and the main material of the second routing line is a transparent conductive material.

12. The spliced ​​screen according to claim 1, wherein: The first border area includes a gate drive circuit, which includes multiple gate drive signal lines. In the orthographic projection on the cover plate, the gap width between two adjacent gate drive signal lines that overlap with the second display area is greater than or equal to 10 microns and less than or equal to 1000 microns.

13. The spliced ​​screen according to any one of claims 1 to 12, wherein: The first display panel is divided into a first overlap area and a first non-overlap area, the second display panel is divided into a second overlap area and a second non-overlap area, the first overlap area and the second overlap area have overlapping orthographic projections on the cover plate, and at least one of the following film layers is stacked between the first overlap area and the second overlap area: a glue layer and a protective layer.

14. The spliced ​​screen according to claim 13, wherein: The splicing screen also includes: A first filling layer is disposed between the second non-overlapping area and the cover plate, wherein a surface of the first filling layer close to the cover plate is flush with a surface of the first display panel close to the cover plate; A first protective layer, comprising a first sub-protective layer and a second sub-protective layer, wherein the first sub-protective layer is arranged on a side of the first non-overlapping region away from the cover plate, and the second sub-protective layer is arranged between the first overlapping region and the second overlapping region, and the thickness of the first sub-protective layer is greater than that of the second sub-protective layer; and The second protective layer is arranged on the side of the second overlapping area and the second non-overlapping area away from the cover plate, and the surface of the second protective layer away from the cover plate is flush with the surface of the first sub-protective layer away from the cover plate.

15. The spliced ​​screen according to claim 13, wherein: The splicing screen also includes: A second filling layer is disposed between the second non-overlapping area and the cover plate, wherein a surface of the second filling layer close to the cover plate is flush with a surface of the first display panel close to the cover plate; A third protective layer is arranged on a side of the first overlapping area and the first non-overlapping area away from the cover plate, and a surface of the third protective layer away from the cover plate is flush with a surface of the second filling layer away from the cover plate; a third filling layer, disposed on a side of the third protective layer away from the first display panel, the orthographic projection of the third filling layer on the first display panel overlaps with the first non-overlapping area, and a surface of the third filling layer close to the cover plate is flush with a surface of the second display panel close to the cover plate; and A fourth protective layer is arranged on the side of the second overlapping area and the second non-overlapping area away from the cover plate, and a surface of the fourth protective layer away from the cover plate is flush with a surface of the third filling layer away from the cover plate.

16. A spliced ​​screen, comprising: Cover plate; as well as A plurality of display panels are arranged on one side of the cover plate, the plurality of display panels include a first display panel and a second display panel spliced ​​to each other, the first display panel includes a first overlapping area and a first non-overlapping area, the second display panel includes a second overlapping area and a second non-overlapping area, the first overlapping area and the second overlapping area overlap with each other in terms of orthographic projection on the cover plate, and the first display panel is located on a side of the second display panel close to the cover plate; Wherein, at least one of the following film layers is laminated between the first overlapping area and the second overlapping area: an adhesive layer and a protective layer.

17. The spliced ​​screen according to claim 16, wherein: The adhesive layer includes a first adhesive layer and a second adhesive layer, and the first adhesive layer, the protective layer and the second adhesive layer are stacked and arranged between the first overlapping area and the second overlapping area.

18. The spliced ​​screen according to claim 16 or 17, wherein: The first display panel includes a first display area and a first frame area, the first frame area is located on a side of the first display area close to the second display panel, the second display panel includes a second display area and a second frame area, the second frame area is located on a side of the second display area close to the first display panel; wherein the first overlapping area includes at least a portion of the first border area, and the second overlapping area includes at least a portion of the second border area; or The first overlapping area includes a portion of the first display area close to the first border area and the first border area, and the second overlapping area includes a portion of the second display area close to the second border area and the second border area.

19. A display device, comprising the spliced ​​screen according to any one of claims 1 to 18.

20. A display driving method, applied to the spliced ​​screen according to any one of claims 1 to 15, wherein the second display area is divided into a first sub-display area and a second sub-display area, and in the orthographic projection on the cover plate, the first sub-display area overlaps with the first frame area, and the second sub-display area does not overlap with the first frame area, and the display driving method comprises: When the spliced ​​screen displays a single grayscale image, the brightness of the first sub-display area is controlled to be greater than or equal to the brightness of the second sub-display area, and the brightness of the second sub-display area is controlled to be greater than the brightness of the first display area.

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