Display device for a vehicle and associated manufacturing process

Abstract

Display device for a vehicle and associated manufacturing method The present invention relates to a display device (10) for a vehicle comprising: a. a screen (18) defining a display area (26), b. an intermediate layer (20) comprising an inner face (36) extending opposite the screen (18) and an outer face (38), and c. a decorative layer (22) comprising a first face (40) and a second face (42), the first face (40) being arranged on at least a part of one of the inner face (36) and the outer face (38) of the intermediate layer (20). The display device (10) comprises a plurality of openings (23) extending at least between the second face (42) of the decorative layer (22) and the first face (40) of the decorative layer (22), said plurality of openings (23) extending at least opposite the display area (26). For the abbreviated figure: Figure 1

Description

Title of the invention: Display device for a vehicle and associated manufacturing method

[0001] The present invention relates to a display device for a vehicle and a method for manufacturing such a display device.

[0002] In vehicles, particularly in motor vehicles, it is increasingly common to have display devices in the trim elements comprising a screen and a display area visible to the user only when a symbol is displayed there.

[0003] When the screen is off or no symbol is displayed, each display area is not directly visible to the user and is notably covered by a decorative pattern. In particular, the user cannot distinguish the display area from the rest of the external surface of the trim element. Conversely, when information is displayed, the display area, and in particular the displayed symbol, is visible to the user instead of the decorative pattern.

[0004] However, such display devices are complex and expensive to implement.

[0005] In particular, such display devices include, for example, a stack of a plurality of layers arranged between the screen and the outer surface, including in particular a decorative layer.

[0006] However, this stacking of layers has unsatisfactory optical properties, particularly with regard to the transmission and diffusion rate of the light emitted by the screen.

[0007] In addition, this stacking of layers results in a change of colors between what is displayed on the screen and what is perceived by the user, which impairs passenger comfort and safety.

[0008] One of the aims of the invention is therefore to remedy these drawbacks and to propose a display device for a vehicle that is simple to implement and configured to display either information from a screen or a decorative pattern satisfactorily, while exhibiting satisfactory optical properties.

[0009] To this end, the invention relates to a display device for a vehicle comprising: a. a screen defining a display area, b. an intermediate layer comprising an inner face extending opposite the screen and an outer face spaced from the inner face along a principal direction, and c. a decorative layer comprising a first face and a second face spaced from the first face along the principal direction, the first face being arranged on at least a part of one of the inner and outer faces of the intermediate layer.

[0010] The display device comprises a plurality of orifices extending at least between the second face of the decorative layer and the first face of the decorative layer, said plurality of orifices extending at least opposite the display area.

[0011] Such a display device thus makes it possible to make the screen visible only when a symbol is displayed on it.

[0012] Indeed, when the screen is on, the openings allow the light generated by the screen to pass through, making the symbol displayed on the display area visible to the passenger. Conversely, when the screen is off, the passenger only sees the decorative layer.

[0013] Furthermore, thanks to the openings allowing light from the screen to pass directly through, the colors displayed on the screen are not modified.

[0014] According to other advantageous aspects of the invention, the display device comprises one or more of the following features, taken individually or in all technically possible combinations:

[0015] - Each orifice extends at least between the second face of the decorative layer and the other of the inner face and the outer face of the intermediate layer.

[0016] - Each orifice opens into the second face of the decorative layer and into the other of the inner face and the outer face of the intermediate layer.

[0017] - The display device includes a homogenization layer arranged between the decorative layer and screen, the homogenization layer comprising a first face arranged against the second face of the decorative layer and a second face spaced from the first face along the principal direction.

[0018] - Each orifice extends between the second face of the homogenization layer and the outer face of the intermediate layer and opens into the second face of the homogenization layer and into the outer face of the intermediate layer.

[0019] - Each orifice extends between the second face of the homogenization layer and the first face of the decorative layer and opens into the second face of the homogenization layer and into the first face of the decorative layer.

[0020] - Each of the orifices has a transverse dimension, measured along a direction transverse perpendicular to the main direction, between 20 pm and 200 pm, and preferably between 30 pm and 150 pm.

[0021] - The orifices are distributed regularly in relation to the display area.

[0022] - The first face of the decorative layer is arranged on the inner face of the intermediate layer, at least between said inner face and the display area.

[0023] - The display device further includes at least one processing layer optical, for example including an anti-reflective coating.

[0024] - The intermediate layer is a layer of glass or a layer of material plastic.

[0025] - The intermediate layer conforms to the shape of the display area.

[0026] The invention also relates to a method for manufacturing a display device as described above, the method comprising at least the following steps:

[0027] - supply of a screen,

[0028] - definition of the intermediate layer,

[0029] - arrangement of the decorative layer on one of the inner and outer faces of the intermediate layer (20), and

[0030] - definition of a plurality of orifices between at least between the second face of the decorative layer and the first face of the decorative layer.

[0031] According to other advantageous aspects of the invention, the manufacturing process comprises one or more of the following features, taken individually or in all technically possible combinations:

[0032] - The step of defining the orifices is carried out by drilling, in particular by drilling laser.

[0033] - The decorative layer arrangement step is carried out by screen printing.

[0034] The invention will become clearer upon reading the following description, given solely by way of non-limiting example, and made with reference to the drawings in which:

[0035] [Fig-1] [Fig.1] is a schematic cross-sectional view of a display device according to a first or second embodiment of the invention,

[0036] [Fig.2] [Fig.2] is a schematic front view of the display device of [Fig.1],

[0037] [Fig.3] [Fig.3] is a schematic cross-sectional view of a display device according to a variant of the invention, and

[0038] [Fig.4] [Fig.4] is a schematic cross-sectional view of a display device according to a third embodiment of the invention.

[0039] Figures 1 and 2 show a display device 10 for a vehicle, in particular for a motor vehicle.

[0040] More particularly, Figures 1 and 2 show an assembly 11 comprising the display device 10 and a trim element 12 of the vehicle, the display device 10 being advantageously integrated into the trim element 12.

[0041] The trim element 12 is, for example, a dashboard arranged at the front of the passenger compartment opposite a driver's seat and a passenger seat.

[0042] Alternatively, the trim element 12 is, for example, a center console, a door panel, a seat back, or something else.

[0043] The trim element 12 includes, for example, a body 13 defining an external surface 14 advantageously facing the passenger compartment of the vehicle.

[0044] The external surface 14 of the trim element 12 is preferably visible to a passenger of the vehicle.

[0045] The external surface 14 of the trim element 12 extends, for example, substantially perpendicular to a principal direction X.

[0046] In particular, the main direction X corresponds for example to the thickness direction of the trim element 12. The thickness is for example defined as the distance between an internal surface applied against the part of the passenger compartment on which the trim element 12 is mounted and the external surface 14.

[0047] The external surface 14 of the trim element 12 has a decorative appearance, for example of a solid color or defining a decorative pattern, such as for example a decorative pattern imitating wood.

[0048] As illustrated in [Fig.1], the display device 10 is preferably fixed in a cavity provided in the body 13 of the trim element 12.

[0049] In particular, the display device 10 includes, for example, also an external surface 16, advantageously oriented towards the passenger compartment of the vehicle.

[0050] The external surface 16 of the display device 10 extends, preferably, in continuity with the external surface 14 of the trim element 12.

[0051] More specifically, there is no interruption between the external surface 16 of the display device 10 and the external surface 14 of the trim element 12.

[0052] The external surface 16 of the display device 10 is, for example, substantially perpendicular to the main direction X.

[0053] The external surface 16 of the display device 10 is for example substantially flat as illustrated in [Fig.1].

[0054] In an alternative (not illustrated) embodiment, the external surface 16 of the display device 10 has at least one curvature. For example, the external surface 16 is substantially concave along the principal direction X.

[0055] For example, the display device 10 also includes an internal surface 15 opposite the external surface 16 along the principal direction X.

[0056] More particularly, the display device 10 extends along the main direction X from the internal surface 15 to the external surface 16.

[0057] The display device 10 includes a screen 18, an intermediate layer 20, a decorative layer 22 and a plurality of holes 23.

[0058] Optionally, the display device 10 further includes at least one optical processing layer 24A, 24B, 24C.

[0059] The screen 18 defines at least one display area 26.

[0060] In particular, when switched on, the screen 18 is for example capable of displaying, in the display area 26, at least one symbol 25, for example related to driving the vehicle.

[0061] In a particular embodiment, the screen 18 is a touch screen, that is to say, it can be controlled by touch contact of a user with the display area 26.

[0062] The screen 18 is for example substantially flat as illustrated in [Fig. 1].

[0063] In an alternative (not illustrated), particularly in the embodiment in in which the external surface 16 of the display device 10 is curved, the screen 18 has at least one curvature, preferably identical to the external surface 16 of the display device 10.

[0064] The screen 18 advantageously includes a light source 27, in particular suitable for generating light at least in the display area 26.

[0065] The screen 18 includes for example a display panel 28, and preferably a liquid crystal display panel, also called LCD (from the English "liquid crystal display" meaning liquid crystal screen).

[0066] More specifically, the display panel 28 defines a display surface 29.

[0067] As can be seen in [Fig. 1], the display surface 29 is preferably the face of the display panel 28 oriented along the main direction X towards the external surface 16 of the display device 10.

[0068] More specifically, the display surface 29 is substantially parallel to the external surface 16 and is offset from it along the principal direction X towards the internal surface 15 of the display device 10.

[0069] In particular, the light source 27 is configured to illuminate the display surface 29, so as to display the symbol 25 on said display surface 29.

[0070] The screen 18 includes, for example, an opaque cover 30 comprising a through opening 32, in particular which lets light through.

[0071] The opaque cover 30 is preferably an opaque film, that is to say, one that does not allow light to pass through.

[0072] The opaque cover 30 is advantageously arranged, along the main direction X, between the display surface 29 of the display panel 28 and the external surface 16 of the display device 10.

[0073] As illustrated in [Fig.1], the opaque cover 30 covers the display surface 29 of the display panel 28, the through opening 32 thus preferably delimiting the display area 26 of the screen 18.

[0074] Preferably, the screen 18 includes an adhesive layer 34, in particular for fixing the opaque cover 30 to the display surface 29 of the display panel 28.

[0075] The adhesive layer 34 comprises, for example, an OCA film (from the English "optically clear adhesive") or LOCA liquid adhesive (from the English "Liquid optically-clear adhesive"), preferably not disrupting the transmission of light.

[0076] The intermediate layer 20 comprises an inner face 36 extending opposite the screen 18 and an outer face 38 spaced from the inner face 36 along the principal direction X.

[0077] In particular, along the principal direction X, the inner face 36 is closer to the screen 18 and the outer face 38 is closer to the outer face 16 of the display device 10.

[0078] The intermediate layer 20 is preferably transparent, that is to say, it allows light to pass through it. In particular, the intermediate layer 20 has a transmittance, corresponding to the ratio of the transmitted light intensity to the incident light intensity, of between 25% and 95%, and preferably between 30% and 40%.

[0079] In a first embodiment, the intermediate layer 20 is, for example, a layer of plastic material.

[0080] The plastic material is preferably a transparent polymer, such as, for example, polymethyl methacrylate (PMMA) or polycarbonate (PC).

[0081] In this embodiment, the intermediate layer 20 has, for example, a thickness, measured along the principal direction X between the inner face 36 and the outer face 38, of between 0.5 mm and 3 mm, and more particularly between 1 mm and 2 mm.

[0082] Advantageously, the intermediate layer 20 conforms to the shape of the display area 26, and preferably of the screen 18.

[0083] In other words, the intermediate layer 20 advantageously has at least one curvature identical to that of the screen 18.

[0084] The decorative layer 22 comprises a first face 40 and a second face 42 spaced from the first face 40 along the main direction X.

[0085] As illustrated in [Fig.1], the decorative layer 22 is for example arranged on the inner face 36 of the intermediate layer 20.

[0086] More specifically, the first face 40 of the decorative layer 22 is arranged on the inner face 36 of the intermediate layer 20, at least between said inner face 36 and the display area 26.

[0087] For example, the decorative layer 22 is produced by screen printing on the inner face 36 of the intermediate layer 20.

[0088] Alternatively, the decorative layer 22 is produced by digital or numerical printing on the inner face 36 of the intermediate layer 20.

[0089] Alternatively, the decorative layer 22 is an adhesive film glued to the inner face 36 of the intermediate layer 20.

[0090] According to another alternative, the decorative layer 22 is a coating, in particular deposited on the inner face 36 of the intermediate layer 20.

[0091] The decorative layer 22 is for example a solid color or defines a decorative pattern, such as for example a decorative pattern imitating wood.

[0092] Preferably, the decorative layer 22 has the same decorative appearance as the external surface 14 of the trim element 12.

[0093] In particular, the decorative layer 22 defines the decorative appearance of the external surface 16 of the display device 10, especially when the screen 18 is off, for example when the display panel 28 is off.

[0094] In other words, when the screen 18 is off, a user sees the decorative pattern or the color of the decorative layer 22, and preferably does not distinguish the display device 10 from the trim element 12.

[0095] As illustrated in [Fig.1], the plurality of orifices 23 extends between the second face 42 of the decorative layer 22 and the outer face 38 of the intermediate layer 20.

[0096] Each orifice 23 opens into the second face 42 of the decorative layer 22 and into the external face 38 of the intermediate layer 20.

[0097] More particularly, as can be seen in [Fig.1], each orifice 23 extends in a straight line along the main direction X over the entire thickness of the intermediate layer 20 and the decorative layer 22.

[0098] Preferably, each orifice 23 is a micro-perforation not visible to the naked eye to a passenger of the vehicle observing the display device 10 from the passenger compartment of the vehicle in which the display device 10 is installed.

[0099] More particularly, each of the orifices 23 has a transverse dimension, measured along a transverse direction Y perpendicular to the main direction X, between 20 pm and 200 pm, and preferably between 30 pm and 150 pm.

[0100] Each orifice 23 is for example a hole or a line or any other suitable shape.

[0101] Each orifice 23 has, for example, a circular cross-section.

[0102] Alternatively, each orifice 23 has a cross-section of the shape rectangular or diamond-shaped.

[0103] As illustrated in [Fig.2], the plurality of orifices 23 extends at least in relation to the display area 26 of the screen 18.

[0104] Advantageously, each of the orifices 23 of the plurality of orifices 23 is configured to allow the light emitted by the screen 18 to pass through when it is lit, so that a passenger in the vehicle can see what is displayed on the display area 26, such as, for example, the symbol 25 as illustrated in [Fig.2].

[0105] Preferably, the orifices 23 of the plurality of orifices are distributed regularly in relation to the display area 26.

[0106] For example, the orifices 23 are distributed according to a constant pitch, for example between 20 pm and 200 pm, and preferably between 30 pm and 100 pm. The pitch corresponds to the distance between two adjacent orifices 23 along the transverse direction Y.

[0107] Preferably, the transverse dimension of each of the holes 23 and / or the pitch are selected taking into account the decorative pattern and / or the characteristics of the screen 18, in particular of the display panel 28, such as for example the pixel size, the number of pixels and the dimensions of the display panel 28. At least one optical processing layer 24A-C is preferably arranged between the external surface 16 of the display device 10 and the intermediate layer 20.

[0108] At least one optical coating layer 24A-C is advantageously transparent, and in particular has a transmittance, corresponding to the ratio of transmitted light intensity to incident light intensity, greater than 90%, and preferably greater than 95%.

[0109] Preferably, the display device 10 comprises three layers of optical processing 24A-C superimposed along the main direction X.

[0110] Each of the optical treatment layers 24A-C is for example a film comprising a specific optical treatment or is formed by deposition of a coating comprising a specific optical treatment.

[0111] In particular, at least one optical treatment layer 24A-C includes, for example, a first layer 24A comprising an anti-glare treatment.

[0112] In addition, at least one optical treatment layer 24A-C includes, for example, a second layer 24B comprising an anti-reflective treatment.

[0113] Furthermore, at least one optical coating layer 24A-C includes, for example, a third layer 24C comprising an anti-scratch and / or cleaning treatment.

[0114] It is understood that a single 24A-C optical treatment layer may have two or more of the optical treatments described above.

[0115] A method for manufacturing such a display device 10 will now be described.

[0116] In a first step, a screen 18 is provided.

[0117] In a second step, the intermediate layer 20 is defined.

[0118] For example, the intermediate layer 20 is defined by the extrusion followed by a cutting of a plastic sheet, so as to define the intermediate layer 20 according to the desired dimensions.

[0119] Next, the decorative layer 22 is arranged on the inner face 36 of the intermediate layer 20.

[0120] In particular, the arrangement step of the decorative layer 22 is carried out by screen printing.

[0121] Alternatively, the arrangement step of the decorative layer 22 is carried out by digital or numerical printing on the inner face 36 of the intermediate layer 20.

[0122] In particular, the step of arranging the decorative layer 22 by screen printing or printing is carried out using suitable inks, such as for example a semi-transparent ink and / or one compatible with the material of the decorative layer 22.

[0123] Alternatively, the arrangement step of the decorative layer 22 is carried out by depositing a coating, in particular on the inner face 36 of the intermediate layer 20.

[0124] The method then includes a step of defining the plurality of orifices 23 between the second face 42 of the decorative layer 22 and the external face 38 of the intermediate layer 20.

[0125] Preferably, the step of defining the orifices 23 is carried out by drilling, in particular by laser drilling and / or using masking techniques.

[0126] Alternatively, the step of defining the orifices 23 is carried out by chemical etching.

[0127] The process then includes a shaping step so that the intermediate layer 20, and preferably the assembly formed with the decorative layer 22, conforms to the shape of the screen 18.

[0128] This formatting step allows, for example, one or more curvatures to be defined.

[0129] For example, this shaping step is carried out by cold forming, particularly in the case where the curvature to be defined is small.

[0130] Alternatively, this shaping step is carried out by hot forming, particularly in the case where the curvature to be defined is strong and / or complex.

[0131] In particular, this hot shaping step is carried out by pressing at a temperature above 140 °C.

[0132] Optionally, at least one optical treatment layer 24A-C is deposited on the outer face 38 of the intermediate layer 20, for example by depositing one or more coating(s) comprising a specific optical treatment.

[0133] This step of depositing at least one optical treatment layer 24A-C is carried out for example after the step of defining the intermediate layer 20 or before the shaping step.

[0134] The set of layers thus formed is then preferably arranged on the screen 18, so as to form the display device 10 as described above.

[0135] Such a display device 10 thus makes it possible to make the screen 18 visible only when a symbol 25 is displayed on it.

[0136] Indeed, when the screen 18 is on, the orifices 23 allow the light generated by the screen 18 to pass through, making the symbol 25 displayed on the display area 26 visible to the passenger. On the contrary, when the screen 18 is off, the passenger sees only the decorative layer 22, in particular thanks to the very small dimensions of the orifices 23 which are not visible to the naked eye, thanks to the orifices 23 which allow the reflected ambient light to pass directly through, a decorative pattern is thus displayed on the display area 26.

[0137] Furthermore, thanks to the openings 23 allowing light from the screen 18 to pass directly through, the colors displayed on the screen 18 are not modified.

[0138] Such a display device 10 also has the advantage of being easy and inexpensive to manufacture.

[0139] The invention is not limited to the embodiments and variants described above.

[0140] In particular, the order of steps in the process described above may be different.

[0141] For example, alternatively, the shaping step is carried out before the hole definition step 23.

[0142] According to an unillustrated variant, the decorative layer 22 is not arranged on the inner face 36 of the intermediate layer 20, but on its outer face 38.

[0143] In this variant, the orifices 23 are defined between the second face 42 of the decorative layer 22 and the inner face 36 of the intermediate layer 20.

[0144] According to a variant illustrated in [Fig.3], the display device 10 further includes a homogenization layer 50, in particular arranged between the decorative layer 22 and the screen 18.

[0145] More specifically, the homogenization layer 50 comprises a first face 52 arranged against the second face 42 of the decorative layer 22, and a second face 54 spaced from the first face 52 along the main direction X.

[0146] The orifices 23 preferably extend into the homogenization layer 50, so as to allow the light emitted by the screen 18 to pass through when it is lit.

[0147] More specifically, each orifice 23 extends between the outer face 38 of the intermediate layer 20 and the second face 54 of the homogenization layer 50, as can be seen in [Fig.3].

[0148] In particular, in this variant, each orifice 23 opens into the second face 54 of the homogenization layer 50.

[0149] The homogenization layer 50 is, for example, a light diffusion or light isolation layer.

[0150] The homogenization layer 50 includes, for example, a nanoscale structure and a refractive index matching layer deposited on the structure to obtain greater diffusion effects.

[0151] For example, the homogenization layer 50 is printed on the second side 42 of the decorative layer 22.

[0152] Alternatively, the homogenizing layer 50 is an adhesive film glued onto the second side 42 of the decorative layer 22.

[0153] According to another alternative, the homogenizing layer 50 is a coating, in particular deposited on the second face 42 of the decorative layer 22.

[0154] The homogenization layer 50 has the advantage of reducing light leakage and thus homogenizing the light passing through the orifices 23.

[0155] According to a second embodiment, the intermediate layer 20 is not a plastic layer, but a glass layer.

[0156] In this second embodiment, the intermediate layer 20 has, for example, a thickness, measured along the principal direction X between the inner face 36 and the outer face 38, of between 0.2 pm and 2 mm, and more particularly between 0.55 pm and 1.3 mm.

[0157] In this second embodiment, the step of defining the intermediate layer 20 is for example carried out by cutting a glass plate into the desired dimensions.

[0158] Preferably, the process also includes in addition a chemical treatment step of the intermediate layer 20, for example by chemical quenching.

[0159] The shaping step of said intermediate layer 20 is for example carried out by cold forming.

[0160] Alternatively, the shaping step of said intermediate layer 20 is carried out for example by hot forming at high temperature, i.e. at a temperature above 650°C.

[0161] This high-temperature hot forming step is preferably carried out before the decorative layer arrangement step 22 and before the hole definition step 23.

[0162] According to a third embodiment illustrated in [Fig.4], the orifices 23 do not extend into the intermediate layer 20.

[0163] In other words, the orifices 23 do not extend between the inner face 36 and the outer face 38 of said intermediate layer 20.

[0164] In particular in this third embodiment, the orifices 23 extend between the first face 40 and the second face 42 of the decorative layer 22.

[0165] More specifically, in the embodiment illustrated in [Fig.4], each orifice 23 opens into the first face 40 of the decorative layer 22 and into the second face 42 of the decorative layer 22.

[0166] In this embodiment, the step of defining the orifices 23 is carried out by defining the plurality of orifices 23 between the first face 40 of the decorative layer 22 and the second face 42 of the decorative layer 22.

[0167] This embodiment has the advantage of reducing the risk of uncontrolled light leaks and avoiding a potential risk of fouling of the orifices defined in the intermediate layer 20.

[0168] In alternative to this embodiment, the display device 10 further comprises the homogenization layer 50, in particular arranged between the decorative layer 22 and the screen 18, as described above.

[0169] In this variant, each orifice 23 extends between the first face 40 of the decorative layer 22 and the second face 54 of the homogenizing layer 50.

Claims

Demands

1. Display device (10) for a vehicle comprising: a. a screen (18) defining a display area (26), b. an intermediate layer (20) comprising an inner face (36) extending opposite the screen (18) and an outer face (38) spaced from the inner face (36) along a principal direction (X), and c. a decorative layer (22) comprising a first face (40) and a second face (42) spaced from the first face (40) along the principal direction (X), the first face (40) being arranged on at least a part of one of the inner face (36) and the outer face (38) of the intermediate layer (20), characterized in that the display device (10) comprises a plurality of orifices (23) extending at least between the second face (42) of the decorative layer (22) and the first face (40) of the decorative layer (22), said plurality of orifices (23) extending at least opposite the display area (26).

2. Display device (10) according to claim 1, wherein each orifice (23) extends at least between the second face (42) of the decorative layer (22) and the other of the inner face (36) and the outer face (38) of the intermediate layer (20).

3. Display device (10) according to claim 2, wherein each orifice (23) opens into the second face (42) of the decorative layer (22) and into the other of the inner face (36) and the outer face (38) of the intermediate layer (20).

4. Display device (10) according to any one of claims 1 to 3, wherein the display device (10) comprises a homogenizing layer (50) arranged between the decorative layer (22) and the screen (18), the homogenizing layer (50) comprising a first face (52) arranged against the second face (42) of the decorative layer (22) and a second face (54) spaced from the first face (52) along the principal direction (X).

5. Display device (10) according to claim 4, wherein each orifice (23) extends between the second face (54) of the homogenizing layer (50) and the outer face (38) of the layer intermediate (20) and opens into the second face (54) of the homogenization layer (50) and into the outer face (38) of the intermediate layer (20).

6. Display device (10) according to claim 4 or 5, wherein each orifice (23) extends between the second face (54) of the homogenizing layer (50) and the first face (40) of the decorative layer (22) and opens into the second face (54) of the homogenizing layer (50) and into the first face (40) of the decorative layer (22).

7. Display device (10) according to any one of the preceding claims, wherein each of the orifices (23) has a transverse dimension, measured along a transverse direction (Y) perpendicular to the principal direction (X), between 20 pm and 200 pm, and preferably between 30 pm and 150 pm.

8. Display device (10) according to any one of the preceding claims, wherein the orifices (23) are regularly distributed with respect to the display area (26).

9. Display device (10) according to any one of the preceding claims, wherein the first face (40) of the decorative layer (22) is arranged on the inner face (36) of the intermediate layer (20), at least between said inner face (36) and the display area (26).

10. Display device (10) according to any one of the preceding claims further comprising at least one optical treatment layer (24A, 24B, 24C), for example comprising an anti-reflective treatment.

11. Display device (10) according to any one of the preceding claims, wherein the intermediate layer (20) is a layer of glass or a layer of plastic material.

12. Display device (10) according to any one of the preceding claims, wherein the intermediate layer (20) conforms to the shape of the display area (26).

13. A method for manufacturing a display device (10) according to any one of the preceding claims, the method comprising at least the following steps: - supplying a screen (18), - defining the intermediate layer (20), - arrangement of the decorative layer (22) on one of the inner face (36) and outer face (38) of the intermediate layer (20), and - definition of a plurality of orifices (23) between at least the second face (42) of the decorative layer (22) and the first face (40) of the decorative layer (22).

14. A manufacturing method according to claim 13, wherein the hole definition step (23) is carried out by drilling, in particular by laser drilling.

15. A manufacturing method according to claim 13 or 14, wherein the step of arranging the decorative layer (22) is carried out by screen printing.

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