Display screen with display panel and method for producing such a display screen

Description

Technical field of the invention

[0001] The present invention relates to display devices, and more particularly to display devices comprising one or more display panels, for example used to form image walls.

[0002] The invention also relates to a method of manufacturing such a display screen. State of the art

[0003] To form a large display screen, commonly called a video wall, it is necessary to assemble a plurality of display panels constituting the elementary bricks, or tiles of the video wall. These elementary bricks generally have an invisible periphery thanks to the presence of luminous pixels on the edges of the surface of the elementary device.

[0004] The use of a large number of elementary bricks of relatively small size compared to that of the image wall is necessary, because the manufacturing means do not allow the direct production of image walls on a scale of 1. Generally speaking, the maximum dimension of the elementary bricks is 500*600mm.

[0005] Advances in light-emitting diodes (LEDs) have made it possible to miniaturize the size of LEDs and thus increase screen resolution.

[0006] However, with increasing resolution, it is necessary to also reduce the size of the elementary bricks, in order to maintain good positioning accuracy of the LEDs, and of the electronic circuits (PCB) possibly associated with these LEDs. Furthermore, by increasing the resolution of the screens, the dimensional step separating two pixels is reduced, which is detrimental to good positioning accuracy at the edge of the elementary bricks. The consequences are that if the image step is reduced, the distance between the last image point of an elementary brick and the first image point of an adjacent elementary brick is also reduced.

[0007] In conclusion, the higher the resolution of the building blocks, the more difficult it is to make the junctions between the different building blocks invisible or undetectable. Furthermore, the human eye is more sensitive to rectilinear junctions, which is the case in most video walls. The junctions between the building blocks are therefore much more visible as the resolution of the building blocks increases, which is detrimental to the perception of the displayed image. Documents US 2003 / 234343 A1, JP 2005 017738 A and US 2022 / 093712 A1 are part of the prior art useful for understanding the invention. Subject of the invention

[0008] The present invention aims to propose a solution which responds to all or part of the aforementioned problems.

[0009] This object can be achieved by implementing a display panel for a display screen according to claim 1, the display screen being intended to comprise a plurality of such display panels arranged side by side, said display panel comprising: a support comprising a first receiving surface and a first thickness counted transversely to the first receiving surface, said first receiving surface comprising at least one first peripheral edge and internally including at least one first connecting portion adjacent to said at least one first peripheral edge of the first receiving surface;a matrix of first pixels defined by a matrix organization characterized by a first axis, a second axis, and a first regular pitch, said matrix of first pixels comprising first pixels arranged on all or part of the first receiving surface and outside the first connecting portion, in a regular manner according to the matrix organization, and first pixels arranged, within the at least one first connecting portion, along: o at least one first peripheral line oriented along the first axis and comprising a first set of locations staggered at regular intervals spaced apart from each other according to said first regular pitch, the number of first pixels belonging to said first peripheral line being strictly less than the number of locations included in said first set so that at least one location of the first set is devoid of pixels;o and / or at least one first peripheral column oriented along the second axis and comprising a second set of locations staggered at regular intervals spaced apart from each other according to said first regular pitch, the number of first pixels belonging to said first peripheral column being strictly less than the number of locations included in said second set so that at least one location of the second set is devoid of a pixel; a plurality of first electrically conductive elements configured to provide an electrical connection between all or part of the first pixels; ; at least one location chosen from said at least one location of the first pixel-free set and said at least one location of the second pixel-free set forming a first junction zone of the first connection portion, the support comprising, at the level of the first junction zone, a junction opening formed through the first thickness of the support, said junction opening being separate from the first peripheral edge of the first receiving surface.

[0010] The above-described arrangements make it possible to provide a display panel for a display screen in which rectilinear alignment of pixels on a peripheral edge of the display panel is avoided in order to prevent the visualization of straight lines at junctions between several display panels, once the display panel is assembled with other display panels to form a display screen.

[0011] The display panel may further have one or more of the following features, alone or in combination.

[0012] According to one embodiment, the first receiving surface is flat.

[0013] According to one embodiment, the first axis is perpendicular to the second axis.

[0014] According to one embodiment, the display panel is suitable for forming a light box or back lighting or BLU for “Back Lightning Unit” for liquid crystal screen according to the established Anglo-Saxon terminology.

[0015] According to an embodiment which is not according to the invention as claimed, said at least one joining opening is provided on the first peripheral edge of the first receiving surface, so that the first peripheral edge of the first receiving surface comprises a non-rectilinear portion. In other words, the first joining zone corresponds to a non-rectilinear cutting of the first peripheral edge of the first receiving surface.

[0016] According to an embodiment which is not according to the invention as claimed, the first peripheral edge is a broken line or a curved line. For example, the first peripheral edge comprises at least one concave non-rectilinear portion, i.e. forming a bump along the peripheral edge, and / or at least one convex non-rectilinear portion, i.e. forming a hollow along the first peripheral edge.

[0017] According to the invention as claimed, said at least one junction opening is disjointed from the first peripheral edge of the first receiving surface.

[0018] The arrangements previously described make it possible to form the first junction zone simply from a display panel comprising the pixels.

[0019] According to one embodiment, the first receiving surface is a quadrilateral-shaped surface.

[0020] According to one embodiment, the first receiving surface comprises a first length corresponding to a greatest dimension counted along the first axis, and a first height corresponding to a greatest dimension counted along the second axis.

[0021] For example, the receiving surface of the display panel may have the general shape of a parallelogram, a rectangle, or a square. In this way, the manufacture and assembly of several display panels is facilitated.

[0022] According to one embodiment, the first receiving surface comprises an assembly opening provided through the first thickness of the support, at a corner of the first quadrilateral receiving surface.

[0023] In this way, it is possible to form a display screen by partially superimposing a plurality of display panels while limiting the excess thickness at the corners.

[0024] The aim of the invention can also be achieved by implementing a display screen comprising: a first display panel according to one of the embodiments previously described; a second display panel distinct from the first display panel and comprising: ∘ a second support comprising a second receiving surface and a second thickness counted transversely to the second receiving surface, said second receiving surface comprising at least one second peripheral edge and internally including at least one second connecting portion adjacent to said at least one second peripheral edge of the second receiving surface;∘ a matrix of second pixels defined by a matrix organization identical to that of the matrix of first pixels of the first display panel, said matrix of second pixels comprising second pixels arranged, on all or part of the second receiving surface and outside the second connection portion, in a regular manner according to the matrix organization, and second pixels arranged at regular intervals spaced apart from each other according to the first regular pitch within the second connection portion, the second connection portion comprising a second junction zone complementary to the first junction zone, and configured to cooperate with the first junction zone of the first connection portion of the first display panel so that at least one second pixel arranged at the second junction zone is disposed at a location of the first junction zone;and ∘ a plurality of second electrically conductive elements configured to provide an electrical connection between all or part of the second pixels.;

[0025] The arrangements described above make it possible to assemble a first display panel and a second display panel so as to form a display screen. Advantageously, the cooperation between the first junction zone of the first connection portion and the second junction zone of the second connection portion makes it possible to mask any possible rectilinear junction effect between the first display panel and the second display panel. In other words, it is possible to blur the junction between the two display panels by the cooperation of the first connection portion with the second connection portion, because the first pixels and second pixels at the junction of the two display panels are no longer necessarily aligned along the first axis or along the second axis of the other display panel.However, in the display screen resulting from the assembly of the first panel and the second panel, all the pixels of the first junction area and the second junction area are perfectly aligned along the first axis and / or along the second axis.

[0026] It is understood that the use of the terms "first" and "second" is not limiting and that depending on the embodiment, there may be at least one additional display panel of the same nature as the first and second display panels and for which the same principles apply.

[0027] The display screen may further have one or more of the following features, alone or in combination.

[0028] According to one embodiment, the plurality of first electrically conductive elements, and the plurality of second electrically conductive elements are electrically controlled jointly.

[0029] Alternatively, the plurality of first electrically conductive elements and the plurality of second electrically conductive elements are individually electrically controlled. In other words, the first display panel and the second display panel are individually electrically controlled via the first and second electrically conductive elements.

[0030] According to one embodiment, the second display panel is a display panel according to one of the embodiments described previously.

[0031] It is therefore well understood that each display panel may comprise one or more connection portions each comprising one or more junction zones.

[0032] For example, each display panel may include a connecting portion at each edge of the receiving surface. Thus, it is possible to obtain a large display screen by assembling a plurality of display panels. The presence of connecting portions between two adjacent display panels makes it possible to make the junctions between the display panels blurred, thus avoiding the formation of straight junctions visible to the naked eye.

[0033] According to the invention as claimed, the first joining area of ​​the first display panel comprises at least one joining opening provided through the first thickness of the support of the first display panel, at which the second joining area of ​​the second display panel cooperates with the first joining area of ​​the first display panel.

[0034] According to one embodiment, the first joining area cooperates with the second joining area by superposition. In this way, it is possible to assemble the first display panel and the second display panel by tiling, which simplifies the assembly of the display screen.

[0035] According to an embodiment which is not according to the invention as claimed, the joining opening of the first joining area of ​​the first display panel is provided on the first peripheral edge of the first receiving surface, and the second joining area of ​​the second connecting portion forms the second peripheral edge of the second receiving surface, the second joining area extending in projection from the second receiving surface, the first peripheral edge of the first receiving surface having a shape complementary to the second peripheral edge of the second receiving surface, the second joining area and the first joining area being arranged side by side in the plane of the first receiving surface and the second receiving surface.

[0036] According to an embodiment which is not according to the invention as claimed, the second junction zone of the second connecting portion projects into the plane of the second receiving surface.

[0037] According to an embodiment which is not according to the invention as claimed, the first peripheral edge of the first receiving surface is formed by a non-rectilinear cutting of the first receiving surface, and the second peripheral edge of the second receiving surface is formed by a non-rectilinear cutting of the second receiving surface, and complementary to the cutting of the first receiving surface.

[0038] According to an embodiment which is not according to the invention as claimed, the first peripheral edge of the first receiving surface is serrated or crenellated.

[0039] According to one embodiment, the second peripheral edge of the second receiving surface is serrated or crenellated.

[0040] According to an embodiment which is not according to the invention as claimed, the first and / or the second peripheral edge is a broken line or a curved line. For example, said first or second peripheral edge comprises at least one concave non-rectilinear portion, i.e. forming a bump along the peripheral edge, and / or at least one convex non-rectilinear portion, i.e. forming a hollow along the first peripheral edge.

[0041] According to one embodiment, the first receiving surface of the first display panel is a quadrilateral-shaped surface, and the second receiving surface of the second display panel is a quadrilateral-shaped surface, said quadrilateral shapes of the first receiving surface and the second receiving surface being quadrilateral shapes of the same nature.

[0042] By "quadrilateral shapes of the same nature" is meant quadrilateral shapes defined by the same type of quadrilateral, a type of quadrilateral being chosen for example from: a square, a rectangle, a rhombus, a parallelogram, a trapezoid, or any other quadrilateral.

[0043] According to one embodiment, the first receiving surface and / or the second receiving surface has / have a general polygonal shape.

[0044] The previously described arrangements make it possible to more simply assemble a plurality of display panels to form the display screen.

[0045] According to one embodiment, at least one display panel chosen from the first display panel and the second display panel comprises an assembly opening provided through the thickness of the support of said at least one display panel, at a corner of the quadrilateral receiving surface of this display panel.

[0046] It is therefore well understood that the total area of ​​the quadrilateral receiving surface is decreased by the removal of the assembly opening.

[0047] Advantageously, it may be provided that a corner of a receiving surface of a display panel adjacent to the display panel comprising the assembly opening completes the receiving surface at the assembly opening.

[0048] According to one embodiment, a first length of a first side of the first receiving surface of the first display panel is a multiple of a second length of a second side of the second receiving surface of the second display panel.

[0049] According to one embodiment, the second receiving surface comprises a second length corresponding to a largest dimension counted along the first axis, and a second height corresponding to a largest dimension counted along the second axis.

[0050] According to one embodiment, the second length is a multiple of the first length or vice versa. For example, the second length is equal to the first length.

[0051] According to one embodiment, the second height is a multiple of the second length, or vice versa. For example, the second height is equal to the second length.

[0052] According to one embodiment, at least one connection portion chosen from the first connection portion and the second connection portion comprises a first junction zone and a second junction zone.

[0053] According to one embodiment, the display screen comprises an electrical connection element configured to provide an electrical connection between all or part of the second electrically conductive elements of the second display panel and all or part of the first electrically conductive elements of the first display panel.

[0054] In this way, all first pixels and second pixels can be supplied with electrical energy simultaneously.

[0055] According to one embodiment, the electrical connection element comprises a plurality of conductive needles passing at least partially through the first thickness of the support of the first display panel and passing at least partially through a second thickness of the support of the second display panel, said second thickness of the support of the second display panel being counted transversely to the second receiving surface.

[0056] According to one embodiment, the electrical connection element comprises an electrically conductive adhesive agent.

[0057] In this way, the electrical connection element makes it possible to ensure both the electrical connection between the first pixels and the second pixels, but also to mechanically maintain the first display panel and the second display panel.

[0058] According to one embodiment, at least one thickness chosen from the first thickness and the second thickness is between 25 µm and 700 µm.

[0059] The arrangements described above make it possible to provide a display screen with a very thin thickness, so that the pixels or light-emitting diodes are clearly visible from all viewing angles, and so that they are almost in the same plane. Thus, it is possible to avoid certain light-emitting diodes being set back from the others. Furthermore, in the case where the first thickness and the second thickness are less than 200 µm, it is possible to obtain a flexible display screen.

[0060] According to one embodiment, the first thickness is between 25 µm and 200 µm, and the second thickness is strictly greater than 700 µm. In this case it is possible to place the first display panel above the second display panel.

[0061] Finally, the aim of the invention can be achieved by implementing a method of manufacturing a display screen according to claim 12 and comprising: a step of providing a first display panel according to one of the embodiments described above; a step of providing a second display panel comprising: ∘ a second support comprising a second receiving surface, said second receiving surface comprising at least one second peripheral edge and internally including at least one second connecting portion adjacent to said at least one second peripheral edge of the second receiving surface;∘ a matrix of second pixels defined by a matrix organization identical to that of the matrix of first pixels of the first display panel, said matrix of second pixels comprising second pixels arranged, on all or part of the second receiving surface and outside the second connection portion, in a regular manner according to the matrix organization, and second pixels arranged at regular intervals spaced apart from each other according to the first regular pitch within the second connection portion, the second connection portion comprising a second junction zone configured to cooperate with the first junction zone of the first connection portion of the first display panel so that at least one second pixel arranged at the second junction zone is disposed at a location of the first junction zone;∘ a plurality of second electrically conductive elements configured to provide an electrical connection between all or part of the second pixels; a step of assembling the display screen in which the first display panel and the second display panel are assembled so that a second pixel of the second display panel is arranged at the first junction area of ​​the first connection portion of the first display panel.;

[0062] The arrangements described above make it possible to propose a method for manufacturing a display screen comprising several display panels, the rectilinear junction between two adjacent display panels of the display screen being made blurred by the positioning of at least a second pixel at the first junction zone of the first connection portion.

[0063] The manufacturing process may further have one or more of the following characteristics, taken alone or in combination.

[0064] According to one embodiment, the step of providing the first display panel comprises: a step of providing a first initial display panel comprising: ∘ the first support; ∘ an initial matrix of first pixels defined by the matrix organization, said initial matrix of first pixels comprising first pixels arranged on all or part of the first receiving surface in a regular manner according to the matrix organization; ∘ the plurality of first electrically conductive elements configured to ensure an electrical connection between all or part of the first pixels; a step of forming a first junction zone in which at least one first pixel is removed from at least one location chosen from the first set and the second set, so that said at least one location is devoid of pixels.

[0065] According to one embodiment, the step of forming the first junction zone comprises the formation of at least one junction opening through the first thickness of the support of the first display panel, the step of assembling the display screen then comprising the superposition of the first connection portion of the first display panel and the second connection portion of the second display panel.

[0066] According to one embodiment, at least one receiving surface selected from the first receiving surface of the first display panel and the second receiving surface of the second display panel is a quadrilateral-shaped surface, the manufacturing method comprising a step of creating an assembly opening, in which an assembly opening is created at a corner of said at least one receiving surface. Summary description of the drawings

[0067] Other aspects, aims, advantages and characteristics of the invention will appear better on reading the following detailed description of preferred embodiments thereof, given by way of non-limiting example, and made with reference to the appended drawings in which: There Figure 1 is a schematic view of a display panel according to one embodiment of the invention. The Figure 2 is a schematic view of a display screen according to one embodiment of the invention. The Figure 3 is a schematic view of a display screen according to another embodiment of the invention. The Figure 4 is a schematic view of a display screen according to another embodiment of the invention. The Figure 5 is a schematic sectional view of a display screen according to one embodiment of the invention. The Figure 6 is a schematic view of a display screen according to another embodiment of the invention. Detailed description

[0068] In the figures and in the remainder of the description, the same references represent identical or similar elements. In addition, the different elements are not shown to scale so as to enhance the clarity of the figures. Furthermore, the different embodiments and variants are not mutually exclusive and may be combined with each other.

[0069] As illustrated on the figures 1 to 6 , the invention relates to a display panel P1, P2 for a display screen denoted "S", and also relates to such a display screen S comprising a plurality of such display panels P1, P2 arranged side by side. The display panel P1, P2 is also suitable for forming a light box, also called back lighting or BLU for "Back Lightning Unit" for a liquid crystal screen, according to the established English terminology.

[0070] The display panel P1, P2 according to the invention firstly comprises a support comprising a first receiving surface 1 and a first thickness e1 counted transversely to the first receiving surface 1. In general, the first receiving surface 1 is flat and has a quadrilateral surface shape. This first receiving surface 1 is intended to receive first pixels 5 distributed over the first receiving surface 1. Thus, the display panel P1, P2 also comprises a matrix of said first pixels 5 defined by a matrix organization characterized by a first axis A1 and a second axis A2 perpendicular to each other, as well as by a first regular pitch 7. It is therefore clearly understood that the first pixels 5 are arranged on the first receiving surface 1 along the first axis A1, and the second axis A2, and spaced from each other by the first pitch 7.The first receiving surface 1 may comprise a first length L1 corresponding to a largest dimension counted along the first axis A1, and a first height H1 corresponding to a largest dimension counted along the second axis A2. For example, the receiving surface of the display panel P1, P2 may have a general shape of a parallelogram, a rectangle, or a square. In this way, the manufacture and assembly of several display panels is facilitated. The first receiving surface 1 comprises at least one first peripheral edge 3 and internally comprises at least one first connecting portion 10 adjacent to this first peripheral edge 3.

[0071] The matrix of first pixels 5 comprises first pixels 5 arranged on all or part of the first receiving surface 1 outside the first connecting portion 10, in a regular manner according to the matrix organization. The matrix of first pixels 5 further comprises first pixels 5 arranged, within the at least one first connecting portion 10, along at least one first peripheral line 15 oriented along the first axis A1 and / or at least one first peripheral column 17 oriented along the second axis A2. As can be seen in the Figure 1, the first connecting portion 10 comprises a first set 14 of locations staggered at regular intervals spaced apart from each other according to said first regular pitch 7. In this first set 14, the number of first pixels 5 belonging to the first peripheral line 15 is strictly less than the number of locations included in the first set 14 so that at least one location of the first set 14 is devoid of a pixel. In the same way, the first connecting portion 10 can also comprise a second set 18 of locations staggered at regular intervals spaced apart from each other according to said first regular pitch 7. In this second set 18, the number of first pixels 5 belonging to the first peripheral column 17 is strictly less than the number of locations included in the second set 18 so that at least one location of the second set 18 is devoid of a pixel.The meeting of the locations of the first set 14 and the second set 18 devoid of pixels, forms a first junction zone 19 of the first connection portion 10.

[0072] The support may comprise, at the level of the first junction zone 19, a junction opening 21 formed through the first thickness e1 of the support. According to a first variant illustrated in the figures 1 to 3 and in accordance with the invention as claimed, this junction opening 21 is separate from the first peripheral edge 3 of the first receiving surface 1. In this case, all of the edges of the support always form a display panel P1, P2 of rectangular shape. According to a second variant shown in the Figure 4and not corresponding to the invention as claimed, the joining opening 21 is provided on the first peripheral edge 3 of the first receiving surface 1, so that the first peripheral edge 3 of the first receiving surface 1 comprises a non-rectilinear portion. In other words, the first joining zone 19 corresponds to a non-rectilinear cutting of the first peripheral edge 3 of the first receiving surface 1. For example, the first peripheral edge 3 may be a broken line or a curved line. Thus, the first peripheral edge may comprise at least one concave non-rectilinear portion, and / or at least one convex non-rectilinear portion.In other words, a convex portion corresponding to a hollow on the first peripheral edge 3 will be devoid of a first pixel 5 along the first peripheral line 15, and / or the first peripheral column 17; whereas a concave portion corresponding to a bump on the first peripheral edge 3 will comprise a first pixel 5. The junction opening 21 thus makes it possible to form the first junction zone 19 simply from a display panel P1, P2 comprising the pixels.

[0073] In reference to the Figure 6 now, the first receiving surface 1 may comprise an assembly opening 23 formed through the first thickness e1 of the support, at a corner of the first quadrilateral receiving surface 1. In this way, it is possible to form a display screen S by a partial superposition of a plurality of display panels while limiting the excess thicknesses at the corners.

[0074] Finally, the display panel P1 comprises a plurality of first electrically conductive elements 12 configured to provide an electrical connection between all or part of the first pixels 5.

[0075] The above-described arrangements make it possible to provide a display panel P1, P2 for a display screen S in which a rectilinear alignment of the pixels on a peripheral edge of the display panel P1, P2 is avoided in order to prevent the visualization of straight lines at junctions between several display panels, once the display panel P1, P2 is assembled with other display panels P1, P2 to form a display screen S.

[0076] As indicated above, the invention also relates to a display screen S, embodiments of which are shown in the figures 2 , 3 , 5 , 6. This display screen S comprises in particular a first display panel P1 as described previously, and a second display panel P2 distinct from the first display panel P1. This second display panel P2 is generally of the same type as the first display panel P1, and comprises a second support comprising a second receiving surface 2 and a second thickness e2 counted transversely to the second receiving surface 2. It may in particular be provided that a thickness chosen from the first thickness e1 and the second thickness e2 is between 25 µm and 700 µm. It is therefore possible to provide a display screen S having a very thin thickness, so that the pixels or the light-emitting diodes are clearly visible from all viewing angles, and so that they are almost in the same visual plane.Thus, it is possible to avoid some light-emitting diodes being set back relative to the others. Furthermore, in the case where the first thickness e1 and the second thickness e2 are less than 200 µm, it is possible to obtain a flexible display screen S. Advantageously, the first thickness e1 can be between 25 µm and 200 µm, and the second thickness e2 can be strictly greater than 700 µm. In this case, it is possible to place the first display panel P1 above the second display panel P2.

[0077] It is understood that the use of the terms "first" and "second" is not limiting and that depending on the embodiment, there may be at least one additional display panel of the same nature as the first and second display panels P1, P2 and for which the same principles apply.

[0078] As illustrated on the figures 2 And 3the first receiving surface 1 of the first display panel P1 may be a quadrilateral-shaped surface, and the second receiving surface 2 of the second display panel P2 is a quadrilateral-shaped surface. The second receiving surface 2 may then comprise a second length L2 corresponding to a larger dimension counted along the first axis A1, and a second height H2 corresponding to a larger dimension counted along the second axis A2. Generally, these quadrilateral shapes of the first receiving surface 1 and of the second receiving surface 2 are quadrilateral shapes of the same nature. By "quadrilateral shapes of the same nature" is meant quadrilateral shapes defined by the same type of quadrilateral, a type of quadrilateral being for example chosen from: a square, a rectangle, a rhombus, a parallelogram, a trapezoid, or any other quadrilateral.Such an embodiment is not limiting, and the first receiving surface 1 and / or the second receiving surface 2 may more generally have a polygonal shape. The arrangements described above make it possible to more simply assemble a plurality of display panels to form the display screen S.

[0079] To simplify the assembly of the display panels, it may be provided that the first length L1 of a first side of the first receiving surface 1 of the first display panel P1 is a multiple of the second length L2 of a second side of the second receiving surface 2 of the second display panel P2. For example, the second length is equal to the first length L1. Alternatively or not, the second height H2 may also be a multiple of the second length L2, or vice versa. For example, the second height H2 is equal to the second length L2.

[0080] The second receiving surface 2 of the second support comprises at least one second peripheral edge 4 and internally includes at least one second connecting portion 30 adjacent to the second peripheral edge 4 of the second receiving surface 2.

[0081] The second display panel P2 comprises a matrix of second pixels 6 defined by a matrix organization identical to that of the matrix of first pixels 5 of the first display panel P1. This matrix of second pixels 6 comprises second pixels 6 arranged, on all or part of the second receiving surface 2 and outside the second connection portion 30, in a regular manner according to the matrix organization. This matrix of second pixels 6 further comprises second pixels 6 arranged at regular intervals spaced apart from each other according to the first regular pitch 7 within the second connection portion 30.

[0082] The second connection portion 30 comprising a second junction zone 42 complementary to the first junction zone 19, and configured to cooperate with the first junction zone 19 of the first connection portion 10 of the first display panel P1 so that at least one second pixel 6 arranged at the level of the second junction zone is arranged at a location 16 of the first junction zone 19.

[0083] To implement the invention, a person skilled in the art may choose the display panels P1, P2, such that each display panel P1, P2 comprises one or more connecting portions each comprising one or more joining zones. For example, each display panel P1, P2 may comprise a connecting portion at each edge of the receiving surface. Furthermore, it is advantageous for at least one connecting portion chosen from the first connecting portion 10 and the second connecting portion 30 to comprise both a first joining zone 22, 42 and a second joining zone 19, 39. Thus, it is possible to obtain a large display screen S by assembling a plurality of display panels.The presence of connecting portions between two adjacent display panels makes it possible to make the junctions between the display panels blurred, thus avoiding the formation of straight junctions visible to the naked eye.

[0084] The first junction zone 19 of the first display panel P1 may comprise at least one junction opening 21 formed through the first thickness e1 of the support of the first display panel P1, at which the second junction zone 42 of the second display panel P2 cooperates with the first junction zone 19 of the first display panel P1.

[0085] According to a first variant in accordance with the invention and illustrated in the figures 2 , 3 , 5 , And 6, the first joining area 19 cooperates with the second joining area 42 by superposition. In this way, it is possible to assemble the first display panel P1 and the second display panel P2 by tiling, which simplifies the assembly of the display screen S.

[0086] According to a second variant which does not correspond to the invention as claimed and illustrated in the Figure 4the junction opening 21 of the first junction area 19 of the first display panel P1 is arranged on the first peripheral edge 3 of the first receiving surface 1, and the second junction area 42 of the second connecting portion 30 forms the second peripheral edge 4 of the second receiving surface 2. The second junction area 42 therefore projects from the second receiving surface 2, and the first peripheral edge 3 of the first receiving surface 1 has a shape complementary to the second peripheral edge 4 of the second receiving surface 2. To form the display screen S, the second junction area 42 and the first junction area 19 are then arranged side by side in the plane of the first receiving surface 1 and the second receiving surface 2. In other words, the second junction area 42 of the second connecting portion 30 projects into the plane of the second receiving surface 2.Obtaining the display panels P1, P2 according to this variant can be done by a non-rectilinear cutting of the first receiving surface 1, complementary to a non-rectilinear cutting of the second receiving surface 2. For example, the first peripheral edge 3 of the first receiving surface 1 is serrated or crenellated in a manner complementary to the second peripheral edge 4 of the second receiving surface 2 which is also serrated or crenellated.

[0087] As illustrated on the Figure 6, at least one display panel P1, P2 chosen from the first display panel P1 and the second display panel P2 comprises an assembly opening 23 formed through the thickness e1, e2 of the support of said at least one display panel P1, P2, at a corner of the quadrilateral receiving surface 1, 2 of this display panel P1, P2. It is therefore clearly understood that the total surface area of ​​the quadrilateral receiving surface 1, 2 is reduced by the removal of the assembly opening 23. Advantageously, it may be provided that a corner of a receiving surface 1, 2 of a display panel adjacent to the display panel P1, P2 comprising the assembly opening 23 completes the receiving surface 1, 2 at the assembly opening 23.

[0088] Now referring to the Figure 5, the second display panel P2 also comprises a plurality of second electrically conductive elements 32 configured to provide an electrical connection between all or part of the second pixels 6. The display screen S may further comprise an electrical connection element 50 configured to provide an electrical connection between all or part of the second electrically conductive elements 32 of the second display panel P2 and all or part of the first electrically conductive elements 12 of the first display panel P1. In this way, all of the first pixels 5 and the second pixels 6 can be supplied with electrical energy simultaneously. The embodiment illustrated in the Figure 5presents the electrical connection element 50 which comprises a plurality of conductive needles passing at least partially through the first thickness e1 of the support of the first display panel P1 and passing at least partially through a second thickness e2 of the support of the second display panel P2, said second thickness e2 of the support of the second display panel P2 being counted transversely to the second receiving surface 2. According to another embodiment not shown, the electrical connection element 50 may comprise an electrically conductive adhesive agent. In this way, the electrical connection element 50 makes it possible to ensure both the electrical connection between the first pixels 5 and the second pixels 6, but also to mechanically maintain the first display panel P1 and the second display panel P2.It is therefore well understood that it is possible for the plurality of first electrically conductive elements 12, and the plurality of second electrically conductive elements 32 to be electrically controlled individually. In other words, the first display panel P1 and the second display panel P2 are electrically controlled individually via the first and second electrically conductive elements 12, 32 which can then be connected to each other via the electrical connection element 50.

[0089] The arrangements described above make it possible to assemble a first display panel P1 and a second display panel P2 so as to form a display screen S. Advantageously, the cooperation between the first junction zone 19 of the first connection portion 10 and the second junction zone 42 of the second connection portion 30 makes it possible to mask any possible rectilinear junction effect between the first display panel P1 and the second display panel P2. In other words, it is possible to blur the junction between the two display panels by the cooperation of the first connection portion 10 with the second connection portion 30, because the first pixels 5 and second pixels 6 at the junction of the two display panels P1, P2 are no longer necessarily aligned along the first axis A1 or along the second axis A2 of the other display panel P1, P2.However, in the display screen S resulting from the assembly of the first panel P1 and the second panel P2, all the pixels of the first junction zone 19 and of the second junction zone 42 are perfectly aligned along the first axis A1 and / or along the second axis A2.

[0090] Finally, the invention relates to a method of manufacturing a display screen S comprising: a step E1 of providing a first display panel P1 as described previously and; a step E2 of providing a second display panel P2 comprising: ∘ a second support comprising a second receiving surface 2, said second receiving surface 2 comprising at least one second peripheral edge 4 and internally including at least one second connection portion 30 adjacent to said at least one second peripheral edge 4 of the second receiving surface 2;∘ a matrix of second pixels 6 defined by a matrix organization identical to that of the matrix of first pixels 5 of the first display panel P1, said matrix of second pixels 6 comprising second pixels 6 arranged, on all or part of the second receiving surface 2 and outside the second connection portion 30, in a regular manner according to the matrix organization, and second pixels 6 arranged at regular intervals spaced apart from each other according to the first regular pitch 7 within the second connection portion 30, the second connection portion 30 comprising a second junction zone 42 configured to cooperate with the first junction zone 19 of the first connection portion 10 of the first display panel P1 so that at least one second pixel 6 arranged at the second junction zone is disposed at a location 16 of the first junction zone 19;o a plurality of second electrically conductive elements 32 configured to provide an electrical connection between all or part of the second pixels 6.;

[0091] For example, the step E1 of providing the first display panel P1 may comprise a step of providing a first initial display panel comprising the first support, an initial matrix of first pixels 5 defined by the matrix organization, said initial matrix of first pixels 5 comprising first pixels 5 arranged on all or part of the first receiving surface 1 in a regular manner according to the matrix organization, and the plurality of first electrically conductive elements 12 configured to provide an electrical connection between all or part of the first pixels 5. The step E1 of providing the first display panel may then subsequently comprise a step of forming a first junction zone 19 in which at least one first pixel 5 is removed from at least one location 16 chosen from the first set 14 and the second set 18, so that said at least one location 16 is devoid of pixels.This step of forming the first junction zone 19 may comprise the formation of at least one junction opening 21 through the first thickness e1 of the support of the first display panel P1.

[0092] Then, and in particular in the case where a receiving surface chosen from the first receiving surface 1 of the first display panel P1 and the second receiving surface 2 of the second display panel P2 is a quadrilateral-shaped surface, the manufacturing method may comprise a step E3 of creating an assembly opening 23, in which an assembly opening 23 is created at a corner of said at least one receiving surface.

[0093] Finally, the manufacturing method comprises a step E4 of assembling the display screen S in which the first display panel P1 and the second display panel P2 are assembled so that a second pixel 6 of the second display panel P2 is arranged at the first junction area 19 of the first connection portion 10 of the first display panel P1. In the case where a step of forming the first junction area 19 comprises the formation of at least one junction opening 21, the step E4 of assembling the display screen S can be implemented by superimposing the first connection portion 10 of the first display panel P1 and the second connection portion 30 of the second display panel P2.

[0094] The arrangements described above make it possible to propose a method for manufacturing a display screen S comprising several display panels, the rectilinear junction between two adjacent display panels of the display screen S being made blurred by the positioning of at least one second pixel 6 at the level of the first junction zone 19 of the first connection portion 10.

Claims

1. A display panel (P1, P2) for a display screen (S), the display screen (S) being intended to comprise a plurality of such display panels (P1, P2) arranged side by side, said display panel (P1, P2) comprising: - a support comprising a first receiving surface (1) and a first thickness (e1) measured transversely to the first receiving surface (1), said first receiving surface (1) comprising at least one first peripheral edge (3) and including internally at least one first connecting portion (10) adjacent to said at least one first peripheral edge (3) of the first receiving surface (1); - a matrix of first pixels (5) defined by a matrix organization characterized by a first axis (A1), a second axis (A2), and a first regular pitch (7), said matrix of first pixels (5) comprising first pixels (5) arranged on all or part of the first receiving surface (1) and outside the first connecting portion (10), in a regular manner according to the matrix organization, and first pixels (5) arranged, within the at least one first connecting portion (10), along: • at least one first peripheral line (15) oriented along the first axis (A1) and comprising a first set (14) of locations staggered at regular intervals spaced apart from each other according to said first regular pitch (7), the number of first pixels (5) belonging to said first peripheral line (15) being strictly less than the number of locations included in said first set (14) such that at least one location of the first set (14) is devoid of pixels; • and / or at least one first peripheral column (17) oriented along the second axis (A2) and comprising a second set (18) of locations staggered at regular intervals spaced apart from each other according to said first regular pitch (7), the number of first pixels (5) belonging to said first peripheral column (17) being strictly less than the number of locations included in said second set (18) such that at least one location of the second set (18) is devoid of pixels; - a plurality of first electrically conductive elements (12) configured to provide an electrical connection between all or part of the first pixels (5); at least one location selected from said at least one location of the first set (14) devoid of pixels and said at least one location of the second set (18) devoid of pixels forming a first junction zone (19) of the first connecting portion (10), the support comprising, at the first junction zone (19), a junction opening (21) formed through the first thickness (e1) of the support, the display panel being characterized in that said junction opening (21) is disjoint from the first peripheral edge (3) of the first receiving surface (1).

2. The display panel (P1, P2) according to claim 1, wherein the first receiving surface (1) is a quadrilateral-shaped surface.

3. The display panel (P1, P2) according to claim 2, wherein the first receiving surface (1) comprises an assembly opening (23) formed through the first thickness (e1) of the support, at a corner of the first quadrilateral receiving surface (1).

4. The display screen (S) comprising: - a first display panel (P1) according to any one of claims 1 to 3; - a second display panel (P2) distinct from the first display panel (P1) and comprising: • a second support comprising a second receiving surface (2) and a second thickness (e2) measured transversely to the second receiving surface (2), said second receiving surface (2) comprising at least one second peripheral edge (4) and internally including at least one second connecting portion (30) adjacent to said at least one second peripheral edge (4) of the second receiving surface (2); • a matrix of second pixels (6) defined by a matrix organization identical to that of the matrix of first pixels (5) of the first display panel (P1), said matrix of second pixels (6) comprising second pixels (6) arranged, on all or part of the second receiving surface (2) and outside the second connecting portion (30), in a regular manner according to the matrix organization, and second pixels (6) arranged at regular intervals spaced apart from each other according to the first regular pitch (7) within the second connecting portion (30), the second connecting portion (30) comprising a second junction zone (42) complementary to the first junction zone (19), and configured to cooperate with the first junction zone (19) of the first connecting portion (10) of the first display panel (P1) such that at least one second pixel (6) arranged at the second junction zone is disposed at a location (16) of the first junction zone (19); and • a plurality of second electrically conductive elements (32) configured to provide an electrical connection between all or part of the second pixels (6).

5. The display screen (S) according to claim 4, wherein the second display panel (P2) is a display panel according to any one of claims 1 to 3.

6. The display screen (S) according to any one of claims 4 or 5, wherein the first receiving surface (1) of the first display panel (P1) is a quadrilateral-shaped surface, and wherein the second receiving surface (2) of the second display panel (P2) is a quadrilateral-shaped surface, said quadrilateral shapes of the first receiving surface (1) and the second receiving surface (2) being quadrilateral shapes of the same nature.

7. The display screen (S) according to claim 6, wherein at least one display panel (P1, P2) selected from the first display panel (P1) and the second display panel (P2) comprises an assembly opening (23) provided through the thickness (e1, e2) of the support of said at least one display panel (P1, P2), at a corner of the quadrilateral receiving surface (1, 2) of this display panel (P1, P2).

8. The display screen (S) according to any one of claims 6 or 7, wherein a first length (L1) of a first side of the first receiving surface (1) of the first display panel (P1) is a multiple of a second length (L2) of a second side of the second receiving surface (2) of the second display panel (P2).

9. The display screen (S) according to any one of claims 4 to 8, comprising an electrical connection element (50) configured to provide an electrical connection between all or part of the second electrically conductive elements (32) of the second display panel (P2) and all or part of the first electrically conductive elements (12) of the first display panel (P1).

10. The display screen (S) according to claim 9, wherein the electrical connection element (50) comprises a plurality of conductive needles at least partially passing through the first thickness (e1) of the support of the first display panel (P1) and at least partially passing through a second thickness (e2) of the support of the second display panel (P2), said second thickness (e2) of the support of the second display panel (P2) being measured transversely to the second receiving surface (2).

11. The display screen (S) according to claim 4 to 10, wherein at least one thickness selected from the first thickness (e1) and the second thickness (e2) is comprised between 25 µm and 700 µm.

12. A method for manufacturing a display screen (5) comprising: - a step (E1) of providing a first display panel (P1) according to any one of claims 1 to 3; - a step (E2) of providing a second display panel (P2) comprising: • a second support comprising a second receiving surface, said second receiving surface comprising at least one second peripheral edge and internally including at least one second connecting portion adjacent to said at least one second peripheral edge of the second receiving surface; • a matrix of second pixels (6) defined by a matrix organization identical to that of the matrix of first pixels (5) of the first display panel (P1), said matrix of second pixels (6) comprising second pixels (6) arranged, on all or part of the second receiving surface (2) and outside the second connecting portion (30), in a regular manner according to the matrix organization, and second pixels (6) arranged at regular intervals spaced apart from each other according to the first regular pitch (7) within the second connecting portion (30), the second connecting portion (30) comprising a second junction zone (42) configured to cooperate with the first junction zone (19) of the first connecting portion (10) of the first display panel (P1) such that at least one second pixel (6) arranged at the second junction zone is disposed at a location (16) of the first junction zone (19); • a plurality of second electrically conductive elements (32) configured to provide an electrical connection between all or part of the second pixels (6); - a step (F4) of assembling the display screen (S) in which the first display panel (P1) and the second display panel (P2) are assembled such that a second pixel (6) of the second display panel (P2) is arranged at the first junction zone (19) of the first connecting portion (10) of the first display panel (P1).

13. The manufacturing method according to claim 12, wherein the step (E1) of providing the first display panel (P1) comprises: - a step of providing a first initial display panel comprising: • the first support; • an initial matrix of first pixels (5) defined by the matrix organization, said initial matrix of first pixels (5) comprising first pixels (5) arranged on all or part of the first receiving surface (1) in a regular manner according to the matrix organization; • the plurality of first electrically conductive elements (12) configured to provide an electrical connection between all or part of the first pixels (5); - a step of forming a first junction zone (19) in which at least one first pixel (5) is removed from at least one location (16) selected from the first set (14) and the second set (18), so that said at least one location (16) is devoid of pixels, said step of forming the first junction zone (19) comprising the formation of at least one junction opening (21) through the first thickness (e1) of the support of the first display panel (P1) and disjointed from the first peripheral edge (3), the step (E4) of assembling the display screen (S) then comprising the superposition of the first connecting portion (10) of the first display panel (P1) and the second connecting portion (30) of the second display panel (P2).

14. The manufacturing method according to any one of claims 12 or 13, wherein at least one receiving surface selected among the first receiving surface (1) of the first display panel (P1) and the second receiving surface (2) of the second display panel (P2) is a quadrilateral-shaped surface, the manufacturing method comprising a step (E3) of creating an assembly opening (23), in which an assembly opening (23) is created at a corner of said at least one receiving surface.