A display cover plate for a display screen and a preparation method thereof, and a display screen

Abstract

The application discloses a display cover plate for a display screen and a preparation method thereof and the display screen. The display screen comprises a transparent or semi-transparent substrate and an ink layer arranged on the surface of the transparent or semi-transparent substrate. The ink layer is arranged to display a preset pattern in an off-screen state of the display screen and display a picture displayed on a display screen in an on-screen state of the display screen. Thus, the display screen with the display cover plate can keep harmony with the surrounding environment in the off-screen state, and especially when used for a vehicle-mounted display screen, the display screen can be integrated with a decoration pattern of an interior trim part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display screen decoration, and particularly relates to a display cover plate for a display screen, a preparation method of the display cover plate and the display screen. BACKGROUND

[0002] With the vigorous development of the passenger car market, people's requirements for the aesthetics and technological sense of car interiors are getting higher and higher. Many cars, especially high-end car interiors, are decorated with real wood or simulated wood texture effects, which have a strong sense of luxury.

[0003] At present, the area where the vehicle-mounted display screen is located cannot form an integral decorative effect with the surrounding interior parts due to the presence of the display screen, especially when the display screen is in an off-screen state, a distinct black area appears. In order to make the display screen in the off-screen state blend in with the wood texture effect of the interior parts and have a high-definition display effect when the screen is lit, it is necessary to develop a display screen cover plate with a wood texture effect. However, such a display screen with a wood texture effect has not yet appeared.

[0004] Therefore, the prior art still needs to be further improved and enhanced. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a display cover plate for a display screen, a preparation method of the display cover plate and the display screen, aiming to provide a cover plate for a display screen, which can display a preset pattern in the off-screen state of the display screen and display the picture displayed on the display screen in the on-screen state of the display screen when the cover plate is arranged on the display screen.

[0006] A display cover plate for a display screen, comprising: a transparent or translucent substrate and an ink layer with a preset pattern arranged on the surface of the transparent or translucent substrate; the ink layer is arranged to display a preset pattern in the off-screen state of the display screen and display the picture displayed on the display screen in the on-screen state of the display screen.

[0007] Optionally, the display cover plate for a display screen, wherein the ink layer has a plurality of hollow holes or a plurality of hollow lines.

[0008] Optionally, the display cover plate for a display screen, wherein the preset pattern comprises a simulated wood texture pattern, a flower and plant pattern, a character pattern and a landscape pattern.

[0009] Optionally, the display cover plate for a display screen, wherein the transparent or translucent substrate is glass or a sheet, film or plate formed by a polymer; the polymer comprises polycarbonate, acrylic, polyester, polyimide and a composite formed by the polycarbonate, acrylic, polyester and polyimide.

[0010] Optionally, the display cover plate for the display screen, wherein when the ink layer has a plurality of hollow holes, the hole diameter of the holes is 0.01mm to 0.2mm; when the ink layer has a plurality of hollow lines, the width of the plurality of hollow lines is 0.01mm to 0.5mm.

[0011] Optionally, the display cover plate for the display screen, wherein the transparent or semi-transparent substrate comprises a first printing surface and a second printing surface; the ink layer with a preset pattern is arranged on the first printing surface, and the ink layer with a preset pattern is composed of at least three different colors of semi-transparent dot ink superposition, wherein the superposition comprises staggered dot superposition and in-situ dot superposition.

[0012] Optionally, the display cover plate for the display screen, wherein the display cover plate further comprises a first white ink layer arranged on the surface of the ink layer with a preset pattern, a first black ink layer arranged on the surface of the first white ink layer, a light diffusion ink layer arranged on the surface of the first black ink layer, and a touch ink layer arranged on the opposite side of the ink layer with a preset pattern.

[0013] Optionally, the display cover plate for the display screen, wherein the display cover plate further comprises a second black ink layer arranged on the surface of the transparent or semi-transparent substrate and a second white ink layer arranged on the surface of the second black ink layer; the ink layer with a preset pattern is arranged on the surface of the second white ink layer; the second white ink layer, the second black ink layer, and the ink layer with a preset pattern all have a plurality of hollow holes or a plurality of hollow lines.

[0014] Optionally, the display cover plate for the display screen, wherein the surface of the transparent or semi-transparent substrate is provided with a semi-transparent black ink layer; the ink layer with a preset pattern is arranged on the surface of the semi-transparent black ink layer; the semi-transparent black ink layer and the ink layer with a preset pattern all have a plurality of hollow holes or a plurality of hollow lines.

[0015] Preferably, a white ink layer can also be arranged on the surface of the ink layer with a preset pattern, and a black ink layer is arranged on the surface of the white ink layer, wherein the white ink layer, the black ink layer, and the ink layer with a preset pattern all have a plurality of hollow holes or a plurality of hollow lines; a touch ink layer is printed on the other side of the transparent or semi-transparent substrate.

[0016] Optionally, the display cover plate for the display screen, wherein the display cover plate further comprises a coating layer, and the coating layer is arranged between the ink layer with a preset pattern and the second white ink layer.

[0017] Optionally, the display cover plate for the display screen, wherein the transparent or semi-transparent substrate comprises a first printing surface and a second printing surface; the ink layer with the preset pattern is arranged on the first printing surface; the surface of the second printing surface is provided with a touch ink layer or a composite ink layer composed of a third white ink layer and a third black ink layer, the third white ink layer is arranged between the transparent or semi-transparent substrate and the third black ink layer; the composite ink layer has a plurality of hollow holes or a plurality of hollow lines.

[0018] Preferably, when the composite ink layer is printed on the second printing surface, a light diffusion ink layer can also be printed on the surface of the composite ink layer.

[0019] A preparation method of the display cover plate for the display screen, comprising:

[0020] Providing a transparent or semi-transparent substrate, the transparent or semi-transparent substrate comprises a first printing surface and a second printing surface;

[0021] Printing the ink layer with the preset pattern on the surface of the first printing surface by using ink to obtain the display cover plate.

[0022] Optionally, the preparation method of the display cover plate for the display screen, wherein the printing the ink layer with the preset pattern on the surface of the first printing surface by using ink specifically comprises:

[0023] Printing three layers of color-different dot inks on the surface of the first printing surface by using color registration printing to obtain the ink layer with the wood grain texture pattern; the dot inks comprise: semi-transparent blue dot ink, semi-transparent red dot ink and semi-transparent yellow dot ink; the printing mode of the ink comprises: silk printing, offset printing, gravure printing and digital printing.

[0024] Optionally, the preparation method of the display cover plate for the display screen, wherein the method further comprises: using laser engraving to engrave a plurality of hollow holes or a plurality of hollow lines on the ink layer.

[0025] Optionally, the preparation method of the display cover plate for the display screen, wherein after the step of using laser engraving to engrave a plurality of hollow holes or a plurality of hollow lines on the ink layer, the method further comprises: printing a light diffusion ink layer on the surface of the ink layer.

[0026] Optionally, the preparation method of the display cover plate for the display screen, wherein the shape of the hole comprises: circular, elliptical, triangular, polygonal and petal shape; the hole spacing of the hole is 0.01-0.2mm.

[0027] Optionally, the method for manufacturing the display cover plate for the display screen, wherein the arrangement mode of the plurality of hollow holes comprises: same size parallel arrangement, same size cross arrangement, different size parallel arrangement, and different size cross arrangement.

[0028] Optionally, the method for manufacturing the display cover plate for the display screen, wherein when the plurality of hollow lines are arranged in parallel, the line distance between two adjacent lines is 0.01mm to 0.5mm.

[0029] Optionally, the method for manufacturing the display cover plate for the display screen, wherein the line comprises: a solid line segment and a dashed line segment, and the length of the solid line segment and the length of the dashed line segment are respectively 0.5mm to 5mm.

[0030] Optionally, the method for manufacturing the display cover plate for the display screen, wherein the method further comprises: printing a touch ink layer on the surface of the transparent or semi-transparent substrate opposite to the ink layer; and the ink used in the ink layer is pigment type ink or dye type ink.

[0031] A method for manufacturing a display cover plate for a display screen, comprising:

[0032] providing a transparent or semi-transparent substrate, wherein the transparent or semi-transparent substrate comprises a first printing surface and a second printing surface;

[0033] printing an ink layer with the preset pattern on the surface of the first printing surface by using ink;

[0034] printing a second black ink layer on the surface of the second printing surface by using ink, printing a second white ink layer on the surface of the second black ink layer, and obtaining a composite ink layer;

[0035] carving a plurality of hollow holes or a plurality of hollow lines on the composite ink layer by using laser engraving, and obtaining the display cover plate.

[0036] A display screen, comprising: the display cover plate described above or the display cover plate manufactured by the manufacturing method described above.

[0037] Beneficial effects: Compared with the prior art, the display cover plate is constructed, the ink layer on the display cover plate is arranged to be capable of displaying a preset pattern in the screen-off state of the display screen and capable of displaying the picture displayed on the display screen in the screen-on state of the display screen, so that the display screen with the display cover plate can be in harmony with the surrounding environment in the screen-off state, and especially when used for a vehicle-mounted display screen, the display screen can be integrated with the decoration pattern of the interior trim. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1A display cover plate structure schematic diagram for a display screen provided by the embodiment of the present application;

[0039] Figure 2 A color superposition dot schematic diagram;

[0040] Figure 3 A hollow hole arrangement mode schematic diagram;

[0041] Figure 4 A display screen use state schematic diagram provided by the embodiment 1;

[0042] Figure 5 A display screen use state schematic diagram provided by the embodiment 2;

[0043] Figure 6 A display screen use state schematic diagram provided by the embodiment 3;

[0044] Figure 7 A display screen use state schematic diagram provided by the embodiment 4;

[0045] Figure 8 A display screen use state schematic diagram provided by the embodiment 5;

[0046] Figure 9 A display screen use state schematic diagram provided by the embodiment 6;

[0047] Figure 10 A display screen use state schematic diagram provided by the embodiment 7;

[0048] Figure 11 A display screen use state schematic diagram provided by the embodiment 8. DETAILED DESCRIPTION

[0049] The present application provides a display cover plate for a display screen and a preparation method thereof. In order to make the purpose, technical scheme and effects of the present application more clear and explicit, the present application is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. It should be noted that the first white ink layer, the second white ink layer, the third white ink layer, the first black ink layer, the second black ink layer and the third black ink layer in the text are only used to distinguish the different sides of the transparent or semi-transparent substrate and are not limited. The first printing surface and the second printing surface (non-printing surface) are only used to distinguish the two surfaces of the substrate and are not limited. They can be the same kind of ink or different kinds of ink. The display cover plate can be defined as an ink surface and an observation surface according to the scene during the specific use of the display cover plate. The ink surface refers to the side with a preset pattern, and the observation surface refers to the side facing the user.

[0050] AsFigure 1 As shown, the present embodiment provides a display cover plate for a display screen, which comprises a transparent or semi-transparent substrate 10 and an ink layer 20 with a preset pattern arranged on the surface of the transparent or semi-transparent substrate. The display screen includes but is not limited to a vehicle-mounted display screen, a computer display screen, a household appliance display screen, etc. The transparent or semi-transparent substrate 10 can be glass or a transparent piece processed from a polymer material, and the glass includes but is not limited to white glass, green glass and coated glass; the transparent piece includes but is not limited to a sheet, a film, a plate and a composite plate made of one or more of polycarbonate, acrylic, polyester, polyimide, etc. The ink layer 20 forms a predetermined pattern by multi-color overprinting, and the pattern includes but is not limited to a wood grain texture pattern, a flower and plant pattern, a character pattern and a landscape pattern. The ink layer is composed of three or more colors of semi-transparent dot ink by overprinting. The semi-transparent dot ink includes but is not limited to semi-transparent black dot ink, semi-transparent white dot ink, semi-transparent red dot ink, semi-transparent yellow dot ink, semi-transparent blue dot ink, semi-transparent purple dot ink and semi-transparent green dot ink, etc.

[0051] In the present embodiment, a composite ink layer or a touch ink layer 30 is further arranged on the back (observation surface) of the transparent or semi-transparent substrate, and the composite ink layer can be composed of a white ink layer and a black ink layer, which can serve as a transparent or semi-transparent substrate layer and make the picture displayed on the display screen clearer when the display cover plate is used on the display screen. The ink forming the touch ink layer can be UV touch ink. The touch ink layer can improve the touch feeling. It should be noted that the touch ink is always printed on the observation surface.

[0052] In the present embodiment, the semi-transparent multi-color ink is used for overprinting on the surface of the transparent transparent or semi-transparent substrate to form a preset pattern by color collision, thereby obtaining a display cover plate. When the display cover plate is used on the display screen, the display cover plate has a contrast difference between the two surfaces, and the preset pattern can be displayed when the display screen is off, and the picture displayed on the display screen when the display screen is on.

[0053] It should be noted that the wood grain texture pattern will be taken as the preset pattern, and the display will be taken as a vehicle-mounted display for further explanation of the present application.

[0054] In the embodiment, the ink layer with the preset pattern is provided with the hollow holes or the hollow lines, and the light can pass through the hollow holes or the hollow lines in the bright screen state of the display screen, so that the light transmittance of the display cover plate is increased, the light transmittance is between 0.5% and 70%, the picture can be clearly displayed on the display cover plate in the bright screen state of the display screen, and the preset pattern on the display cover plate interferes with the picture. The hollow holes or the hollow lines can be processed by laser engraving. The shapes of the holes include but are not limited to a circle, an ellipse, a triangle, a polygon or a petal shape. The lines can be long straight lines or line segments (solid line segments or dashed line segments). In the bright screen state, the hollow holes or the hollow lines can transmit light, the hollow precision is dozens of microns, the naked eye cannot distinguish, and the picture displayed in the display module can be clearly seen.

[0055] In the embodiment, after the hollow holes or the hollow lines are engraved on the ink layer with the preset pattern, a layer of light diffusion ink can be printed on the surface of the engraved ink layer. By printing the light diffusion ink, the light passing through the ink layer can be more uniform. It is easy to understand that the light diffusion ink involved in the present application is printed after laser engraving.

[0056] Exemplarily, the hollow holes are circular holes, the hole diameter can be 0.01mm to 0.05mm, 0.05mm to 0.1mm, 0.1mm to 0.15mm or 0.15mm to 0.2mm. The hole spacing can be 0.01mm to 0.05mm, 0.05mm to 0.1mm, 0.1mm to 0.15mm or 0.15mm to 0.2mm.

[0057] As shown in Figure 2 The arrangement of the hollow holes includes but is not limited to the same size cross arrangement, the same size parallel arrangement, the different size cross arrangement and the different size parallel arrangement. It should be noted that the same size can refer to the same size of the hole diameter and / or the hole spacing of all the holes, and the different size can refer to the different size of the hole diameter and / or the hole spacing of all the holes.

[0058] Exemplarily, the width of the hollow lines can be 0.01mm to 0.05mm, 0.05mm to 0.1mm, 0.1mm to 0.15mm, 0.15mm to 0.2mm, 0.2mm to 0.25mm, 0.25mm to 0.3mm, 0.3mm to 0.35mm, 0.35mm to 0.4mm, 0.4mm to 0.45mm or 0.45mm to 0.5mm. The line spacing between the lines is 0.01mm to 0.5mm. The arrangement of the lines includes but is not limited to the 0-degree (angle) to 90-degree parallel arrangement of the hollow lines and the display screen, and the 5-degree to 90-degree (angle) cross arrangement of the two groups of hollow lines.

[0059] Exemplarily, the hollowed-out lines are solid line segments and dashed line segments, wherein the lengths of the solid line segments and the dashed line segments are respectively 0.5 mm to 5 mm, and the arrangement modes of the solid line segments and the dashed line segments include but are not limited to parallel arrangement at 0 degrees (angle) to 90 degrees with the display screen, and the two groups of hollowed-out line segments are arranged in cross at 5 degrees to 90 degrees (angle).

[0060] Based on the same inventive concept, the application further provides a preparation method of the display cover plate for the display screen, and the method comprises the following steps:

[0061] S10, providing a transparent or translucent substrate, wherein the transparent or translucent substrate comprises a first printing surface and a second printing surface;

[0062] S20, printing an ink layer with the preset pattern on the surface of the first printing surface by using ink;

[0063] S30, engraving a plurality of hollowed-out holes or a plurality of hollowed-out lines on the ink layer by using laser engraving, so as to obtain the display cover plate.

[0064] Further, after the step S30, the method further comprises printing a light diffusion ink layer on the surface of the ink layer by using light diffusion ink, or printing a touch ink layer on the observation surface by using touch ink.

[0065] As another implementation mode, the display cover plate for the display screen can also be prepared by using the following method:

[0066] S11, providing a transparent or translucent substrate, wherein the transparent or translucent substrate comprises a first printing surface and a second printing surface;

[0067] S21, printing an ink layer with the preset pattern on the surface of the first printing surface by using ink;

[0068] S31, printing a second black ink layer on the surface of the second printing surface by using ink, and printing a second white ink layer on the surface of the second black ink layer, so as to obtain a composite ink layer;

[0069] S41, engraving a plurality of hollowed-out holes or a plurality of hollowed-out lines on the composite ink layer by using laser engraving, so as to obtain the display cover plate.

[0070] As another implementation mode, the display cover plate for the display screen can also be prepared by using the following method:

[0071] S12, providing a transparent or translucent substrate;

[0072] S22, printing a layer of semi-transparent black dot ink on the surface of the first printing surface, and printing an ink layer with the preset pattern on the semi-transparent black dot ink layer;

[0073] S32, printing a white ink layer on the ink layer with the preset pattern using white ink, and printing a black ink layer on the surface of the white ink layer;

[0074] S42, engraving a plurality of hollow holes or a plurality of hollow lines on the ink layer using laser engraving to obtain the display cover plate.

[0075] In the embodiment, a corresponding transparent or translucent substrate material can be selected according to actual needs, such as a polymer film. One surface of the polymer film is used as a printing surface (a surface on which the ink layer with the preset pattern is printed) and is used as the first printing surface. The other surface of the polymer film is used as the second printing surface.

[0076] The ink is printed on the first printing surface to form a preset pattern. For example, a semi-transparent dot ink is used to print a wood grain pattern by overprinting. The printing method includes, but is not limited to, screen printing, rubber plate printing, and digital printing. The dot design of the multi-color overprint wood grain effect is staggered dot overprint and in-situ dot overprint, as shown in the following figure. Figure 2

[0077] Further, a layer of white ink and a layer of black ink can be printed on the second printing surface. The white ink is printed on the surface of the second printing surface, and the black ink is printed on the surface of the white ink layer.

[0078] In the embodiment, the screen printing screen plate includes, but is not limited to, a polyester screen and a steel screen. The mesh of the screen is 150 to 500, the thread count is 60 to 160, the included angle between the screen mesh and the screen frame is 0°, 22.5°, and 45°.

[0079] In the embodiment, laser engraving is used to engrave hollow holes or hollow lines on the ink layer. It should be noted that laser engraving is only used to engrave the ink layer on the first printing surface or only used to engrave the composite ink layer. The specific engraving process belongs to the prior art, and is not limited herein. The shape of the hollow hole includes, but is not limited to, a circular shape, an elliptical shape, a triangular shape, a polygonal shape, and a petal shape.

[0080] The hole diameter, the hole spacing, and the hole arrangement method, the line width, and the line spacing are listed above and will not be repeated here.

[0081] Based on the same inventive concept, the present application also provides a display screen comprising the display cover plate described above. The display screen is a common display screen in the prior art, such as a vehicle-mounted display screen. The shape and specific structure are not limited herein. ​

[0082] The preparation method of the display cover plate provided by the present application is further explained below through specific preparation examples.

[0083] Example 1

[0084] A 500-mesh steel screen plate with staggered overprint dots was used to print a layer of pigment type semi-transparent blue dot ink on a 1.1 mm thick green glass, and the ink was baked at 170°C for 10 minutes; then a 500-mesh steel screen plate with staggered overprint dots was used to print a layer of pigment type semi-transparent red dot ink, and the ink was baked at 170°C for 10 minutes; then a 500-mesh steel screen plate with staggered overprint dots was used to print a layer of pigment type semi-transparent yellow dot ink, and the ink was baked at 170°C for 30 minutes, thereby obtaining an ink layer with a wood grain pattern.

[0085] A laser was used to engrave hollow small holes in the ink layer, the shape of the hollow small holes was circular, the aperture of the hollow small holes was 0.05 mm, the hole spacing of the hollow small holes was 0.07 mm, and the arrangement of the hollow small holes was parallel arrangement of the same size. The display cover plate obtained had a transmittance of 56% at 550 nm. When assembled on a vehicle-mounted display screen, the display cover plate could display a wood grain effect when the screen was turned off and could display high-definition when the screen was turned on. The display effect is shown in Figure 4 .

[0086] Example 2

[0087] A 500-mesh steel screen plate with staggered overprint dots was used to print a layer of pigment type semi-transparent blue dot ink on a 1.3 mm thick white glass, and the ink was baked at 170°C for 10 minutes; then a 500-mesh steel screen plate with staggered overprint dots was used to print a layer of pigment type semi-transparent red dot ink, and the ink was baked at 170°C for 10 minutes; then a 500-mesh steel screen plate with staggered overprint dots was used to print a layer of pigment type semi-transparent yellow dot ink, and the ink was baked at 170°C for 30 minutes, thereby obtaining an ink layer with a wood grain pattern.

[0088] A laser was used to engrave hollow small holes in the ink layer, the shape of the hollow small holes was circular, the aperture of the hollow small holes was 0.05 mm, the hole spacing of the hollow small holes was 0.07 mm, and the arrangement of the hollow small holes was parallel arrangement of the same size.

[0089] A 350-mesh steel screen plate was used to print a layer of UV type touch ink on the non-printing surface of the white glass, and a UV mercury lamp was used for curing at 150 mJ / cm 2 . The display cover plate obtained had a transmittance of 54% at 550 nm and a three-dimensional touch on the surface. When assembled on a vehicle-mounted display screen, the display cover plate could display a wood grain effect when the screen was turned off and could display high-definition when the screen was turned on. The display effect is shown in Figure 5 .

[0090] Example 3

[0091] On a green glass with a thickness of 1.1 mm, a pigment type semi-transparent blue dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; then a pigment type semi-transparent red dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; a pigment type semi-transparent yellow dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; a pigment type semi-transparent black dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; a white ink was printed on the semi-transparent black dot ink by a 500 mesh steel screen plate, and baked at 170°C for 10 minutes; a black ink was printed on the white ink by a 500 mesh steel screen plate, and baked at 170°C for 30 minutes; an ink layer with a wood grain pattern was obtained.

[0092] A small hole was engraved on the ink layer by laser, the shape of the small hole was circular, the aperture of the small hole was 0.01 mm, the hole distance of the small hole was 0.05 mm, and the small hole was arranged in parallel with the same size. The display cover plate obtained has a transmittance of 27% at 550 nm. When the display cover plate is assembled on a vehicle display screen, the wood grain effect can be displayed when the screen is turned off, and high definition display can be realized when the screen is turned on. The display effect is shown in Figure 6 .

[0093] Example 4

[0094] On a green glass with a thickness of 1.1 mm, a pigment type semi-transparent blue dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; then a pigment type semi-transparent red dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; a pigment type semi-transparent yellow dot ink was printed by a 500 mesh steel screen plate with staggered overprint dots, and baked at 170°C for 10 minutes; a white ink was printed on the non-printing surface of the green glass by a 420 mesh polyester screen plate, and baked at 170°C for 10 minutes; a black ink was printed on the white ink by a 420 mesh polyester screen plate, and baked at 170°C for 30 minutes; an ink layer with a wood grain pattern was obtained.

[0095] The white ink and black ink layer are laser engraved with a small hole (the ink layer without a preset pattern is engraved), the shape of the small hole is oval, the aperture of the small hole is 0.1 mm, the hole spacing of the small hole is 0.1 mm, and the small hole is arranged in parallel with the same size. The transmittance of the display cover plate at 550 nm is 25%. Assembling the display cover plate to the vehicle-mounted display screen can realize the display of wood texture effect when the screen is off, and high-definition display when the screen is on. The display effect is shown in Figure 7 .

[0096] Example 5

[0097] The 1.1 mm thick green glass is printed once with a 500 mesh steel screen plate with staggered color dot printing of a pigment type semi-transparent blue dot ink, baked at 170°C for 10 minutes; then printed once with a 500 mesh steel screen plate with staggered color dot printing of a pigment type semi-transparent red dot ink, baked at 170°C for 10 minutes; printed once with a 500 mesh steel screen plate with staggered color dot printing of a pigment type semi-transparent yellow dot ink, baked at 170°C for 10 minutes; printed once with a 500 mesh steel screen plate with staggered color dot printing of a pigment type semi-transparent black dot ink, baked at 170°C for 10 minutes; printed once with a 500 mesh steel screen plate with a white ink on the semi-transparent black dot ink, baked at 170°C for 10 minutes; printed once with a 500 mesh steel screen plate with a black ink on the white ink, baked at 170°C for 10 minutes; the ink layer is laser engraved with a hollow line, the line width of the hollow line is 0.1 mm, the hollow line is arranged in parallel with the display screen at 0 degrees (when the display cover plate is installed on the display screen), and the line spacing is 0.05 mm. A layer of light diffusion ink is printed on the black ink, baked at 170°C for 30 minutes; an ink layer with a wood grain pattern is obtained.

[0098] The transmittance of the display cover plate at 550 nm is 45%. Assembling the display cover plate to the vehicle-mounted display screen can realize the display of wood texture effect when the screen is off, and high-definition display when the screen is on. The display effect is shown in Figure 8 .

[0099] Example 6

[0100] A 1.1 mm thick white glass was printed once with a black ink using a 420 mesh polyester screen, baked at 180°C for 8 minutes; the black ink was printed once with a 420 mesh polyester screen with a high reflective white ink with a reflectivity of 85%, baked at 180°C for 8 minutes; the high reflective white ink was printed once with a 420 mesh polyester screen with a pigment type semi-transparent black dot ink by in-situ overprinting, baked at 180°C for 8 minutes; the dot ink was printed once with a 420 mesh polyester screen with a pigment type semi-transparent yellow dot ink by in-situ overprinting, baked at 180°C for 8 minutes; the dot ink was printed once with a 420 mesh polyester screen with a pigment type semi-transparent red dot ink by in-situ overprinting, baked at 180°C for 8 minutes; the dot ink was printed once with a 420 mesh polyester screen with a pigment type semi-transparent blue dot ink by in-situ overprinting, baked at 180°C for 30 minutes;

[0101] The ink surface was laser-engraved with different sizes of small holes. The shape of the small holes was circular, the aperture of the small holes was 0.02 mm and 0.05 mm, the hole spacing of the small holes was 0.03 mm, and the small holes were arranged in different sizes in a staggered manner. The obtained wood texture display screen had a transmittance of 52% at 550 nm. Assembling the obtained display cover plate to the display screen can realize a high-contrast wood texture effect when the screen is turned off, and can realize high-definition display without interference lines when the screen is turned on. The display effect is shown in Figure 9

[0102] Example 7

[0103] A 1.1 mm thick white glass was printed once with a black ink using a 500 mesh steel screen, baked at 190°C for 6 minutes; the black ink was printed once with a 500 mesh steel screen with a high leveling white ink, baked at 190°C for 6 minutes; a high reflective plating film was prepared on the white ink by optical plating; the reflective plating film was printed once with a 500 mesh steel screen with a pigment type semi-transparent black dot ink by in-situ overprinting, baked at 190°C for 6 minutes; the semi-transparent black dot ink was printed once with a 500 mesh steel screen with a pigment type semi-transparent yellow dot ink by in-situ overprinting, baked at 190°C for 6 minutes; the semi-transparent yellow dot ink was printed once with a 500 mesh steel screen with a pigment type semi-transparent red dot ink by in-situ overprinting, baked at 190°C for 6 minutes; the semi-transparent red dot ink was printed once with a 500 mesh steel screen with a pigment type semi-transparent blue dot ink by in-situ overprinting, baked at 190°C for 30 minutes;

[0104] ​Different sizes of small holes are engraved on the ink surface by laser, the shape of the small holes is circular, the aperture of the small holes is 0.04mm, the hole spacing of the small holes is 0.1mm, and the arrangement mode of the small holes is same size cross arrangement. The wood texture display screen obtained has a transmittance of 32% at 550nm. Assembling the obtained display cover plate to the display screen can realize the display of high-contrast wood texture effect when the screen is turned off, and realize high-definition display without interference lines when the screen is turned on. The display effect is shown in Figure 10 .

[0105] Example 8

[0106] A 1.1mm thick white glass is printed once with a 500 mesh steel screen plate, a black ink is baked at 190℃ for 6 minutes; a 500 mesh steel screen plate is used to print once on the black ink, a high leveling white ink is baked at 190℃ for 6 minutes; a high reflection coating is prepared on the white ink by optical plating; a 500 mesh steel screen plate is used to print once on the reflection coating, a dye type semi-transparent black dot ink is baked at 190℃ for 6 minutes; a 500 mesh steel screen plate is used to print once on the semi-transparent black dot ink, a dye type semi-transparent yellow dot ink is baked at 190℃ for 6 minutes; a 500 mesh steel screen plate is used to print once on the semi-transparent yellow dot ink, a dye type semi-transparent red dot ink is baked at 190℃ for 6 minutes; a 500 mesh steel screen plate is used to print once on the semi-transparent red dot ink, a dye type semi-transparent blue dot ink is baked at 190℃ for 30 minutes;

[0107] Different sizes of small holes are engraved on the ink surface by laser, the shape of the small holes is circular, the aperture of the small holes is 0.04mm, the hole spacing of the small holes is 0.1mm, and the arrangement mode of the small holes is same size cross arrangement. The wood texture display screen obtained has a transmittance of 35% at 550nm. Assembling the obtained display cover plate to the display screen can realize the display of high-contrast wood texture effect when the screen is turned off, and realize high-definition display without interference lines when the screen is turned on. The display effect is shown in Figure 11 .

[0108] Example 9

[0109] A 1.1mm thick white glass is printed once with a 500 mesh steel screen plate, a UV black ink is cured once by a UV mercury lamp at 150mJ / cm 2 ; a 500 mesh steel screen plate is used to print once on the UV black ink, a high leveling white ink is photocured for 5 minutes; a high reflection coating is prepared on the white ink by optical plating; a 500 mesh steel screen plate is used to print once on the reflection coating, a UV semi-transparent black dot ink is cured once by a UV mercury lamp at 150mJ / cm 2Cure once; print one layer of UV semi-opaque yellow dot ink by 500 mesh steel screen over the semi-opaque black dot ink through in situ overprint dots, UV mercury lamp at 150 mJ / cm 2 Cure once; print one layer of dye type semi-opaque red dot ink by 500 mesh steel screen over the semi-opaque yellow dot ink through in situ overprint dots, UV mercury lamp at 150 mJ / cm 2 Cure once; print one layer of UV semi-opaque blue dot ink by 500 mesh steel screen over the semi-opaque red dot ink through in situ overprint dots, UV mercury lamp at 150 mJ / cm 2 Cure once;

[0110] The ink surface is engraved with different sizes of hollow small holes by laser. The shape of the hollow small holes is circular, the aperture of the hollow small holes is 0.04 mm, the hole spacing of the hollow small holes is 0.1 mm, and the hollow small holes are arranged in the same size cross arrangement. The wood texture display screen obtained has a transmittance of 37% at 550 nm. Assembling the obtained display cover plate to the display screen can realize the display of high-contrast wood texture effect when the screen is turned off, and high-definition display can be realized when the screen is turned on without interference lines.

[0111] Example 10

[0112] Print one layer of dye type semi-opaque black dot ink on a 1.8 mm thick polycarbonate / acrylic composite board by 420 mesh polyester screen plate, and bake at 80°C for 10 minutes; print one layer of pigment type semi-opaque yellow dot ink by 420 mesh polyester screen plate over the dot ink through in situ overprint dots, and bake at 80°C for 10 minutes; print one layer of pigment type semi-opaque red dot ink by 420 mesh polyester screen plate over the dot ink through in situ overprint dots, and bake at 80°C for 8 minutes; print one layer of pigment type semi-opaque blue dot ink by 420 mesh polyester screen plate over the dot ink through in situ overprint dots, and bake at 80°C for 8 minutes; print one layer of white ink on the semi-opaque blue dot ink by 500 mesh steel screen plate, and bake at 80°C for 8 minutes; print one layer of black ink on the white ink by 500 mesh steel screen plate, and bake at 80°C for 60 minutes;

[0113] The ink surface is engraved with hollow lines by laser. The length of the hollow lines is the full screen size, the width of the hollow lines is 0.02 mm, the line spacing of the hollow lines is 0.05 mm, and the hollow lines are arranged at an angle of 20° with the glass. The wood texture display screen obtained has a transmittance of 38% at 550 nm. Assembling the obtained display cover plate to the display screen can realize the display of high-contrast wood texture effect when the screen is turned off, and high-definition display can be realized when the screen is turned on without interference lines.

[0114] It is to be understood that the application is not limited to the examples described above, which can be modified or adapted in several ways by those skilled in the art without departing from the scope of the present application, as defined by the appended claims.

Claims

1. A display cover plate for a display screen, characterized by The display cover plate comprises: a transparent or semi-transparent substrate and an ink layer with a preset pattern arranged on the surface of the transparent or semi-transparent substrate; the ink layer with a preset pattern is arranged to display the preset pattern in the off-screen state of the display screen and display the picture displayed on the display screen in the on-screen state of the display screen; the ink layer with a preset pattern has a plurality of hollow holes or a plurality of hollow lines; when the ink layer has a plurality of hollow holes, the hole diameter of the holes is 0.01mm to 0.2mm; when the ink layer has a plurality of hollow lines, the width of the plurality of hollow lines is 0.01mm to 0.5mm; the transparent or semi-transparent substrate comprises a first printing surface and a second printing surface; the ink layer with a preset pattern is arranged on the first printing surface, and the ink layer with a preset pattern is composed of at least three different colors of semi-transparent screen dot ink superposition, wherein the superposition comprises staggered screen dot superposition and in-situ screen dot superposition; a composite ink layer or a touch ink layer is further arranged on the back surface of the transparent or semi-transparent substrate; the display cover plate further comprises a first white ink layer arranged on the surface of the ink layer with a preset pattern and a first black ink layer arranged on the surface of the first white ink layer; the first black ink layer and the first white ink layer each have a plurality of hollow holes or a plurality of hollow lines.

2. The display cover plate for a display screen according to claim 1, wherein, The preset pattern comprises a wood grain texture pattern, a flower and plant pattern, a character pattern and a landscape pattern.

3. The display cover plate for a display screen according to claim 1, wherein, The transparent or semi-transparent substrate is glass or a sheet, a film or a plate formed by a polymer; the polymer comprises polycarbonate, acrylic, polyester, polyimide and a composite formed by the polycarbonate, acrylic, polyester and polyimide.

4. The display cover plate for a display screen according to claim 1, wherein, The display cover plate further comprises a second black ink layer arranged on the surface of the transparent or semi-transparent substrate and a second white ink layer arranged on the surface of the second black ink layer; the ink layer with a preset pattern is arranged on the surface of the second white ink layer; the second white ink layer, the second black ink layer and the ink layer with a preset pattern each have a plurality of hollow holes or a plurality of hollow lines.

5. The display cover plate for a display screen of claim 1, wherein, The surface of the transparent or semi-transparent substrate is provided with a semi-transparent black ink layer; the ink layer with a preset pattern is arranged on the surface of the semi-transparent black ink layer; the semi-transparent black ink layer and the ink layer with a preset pattern each have a plurality of hollow holes or a plurality of hollow lines.

6. The display cover plate for a display screen according to claim 4, wherein, The display cover plate further comprises a coating layer arranged between the ink layer with a preset pattern and the second white ink layer.

7. The display cover plate for a display screen of claim 1, wherein, The transparent or semi-transparent substrate comprises a first printing surface and a second printing surface; the ink layer with a preset pattern is arranged on the first printing surface; the surface of the second printing surface is provided with a composite ink layer composed of a third white ink layer and a third black ink layer, the third white ink layer is arranged between the transparent or semi-transparent substrate and the third black ink layer; the composite ink layer has a plurality of hollow holes or a plurality of hollow lines.

8. A method of manufacturing a display cover plate for a display screen as claimed in claim 1, characterized in that The display cover plate comprises: a transparent or semi-transparent substrate is provided, the transparent or semi-transparent substrate comprises a first printing surface and a second printing surface; adopting ink to print an ink layer with the preset pattern on the surface of the first printing surface to obtain the display cover plate; adopting laser engraving to engrave a plurality of hollow holes or a plurality of hollow lines on the ink layer; the ink layer with the preset pattern is composed of at least three different colors of translucent screen ink; the ink layer with the preset pattern further comprises a first white ink layer and a first black ink layer disposed on the surface of the first white ink layer; the first black ink layer, the first white ink layer and the ink layer with the preset pattern all have a plurality of hollow holes or a plurality of hollow lines.

9. The method of claim 8, wherein the display cover plate for a display screen is prepared by the steps of: the step of adopting ink to print an ink layer with the preset pattern on the surface of the first printing surface specifically comprises: adopting screen printing to print three layers of screen ink with different colors on the surface of the first printing surface to obtain an ink layer with a wood grain pattern; the screen ink comprises translucent blue screen ink, translucent red screen ink and translucent yellow screen ink; the printing mode of the ink comprises silk printing, offset printing, gravure printing and digital printing.

10. The method of claim 8, wherein the display cover plate for a display screen is prepared by the steps of: the step of adopting laser engraving to engrave a plurality of hollow holes or a plurality of hollow lines on the ink layer further comprises printing a light diffusion ink layer on the surface of the ink layer.

11. The method of claim 8, wherein the display cover plate for a display screen is prepared by the steps of: the arrangement mode of the plurality of hollow holes comprises parallel arrangement of the same size, cross arrangement of the same size, parallel arrangement of different sizes and cross arrangement of different sizes; the arrangement mode of the plurality of hollow lines comprises parallel arrangement of the hollow lines with the display screen at 0-90 degrees or cross arrangement of two groups of hollow lines at 5-90 degrees.

12. The method of claim 8, wherein the display cover plate for a display screen is prepared by the steps of: the preparation method further comprises printing a touch ink layer on the surface of the transparent or translucent substrate opposite to the ink layer; the ink used in the ink layer is pigment ink or dye ink.

13. A method of manufacturing the display cover plate for a display screen according to claim 1, characterized by, comprises: providing a transparent or translucent substrate comprising a first printing surface and a second printing surface; adopting ink to print an ink layer with the preset pattern on the surface of the first printing surface; adopting ink to print a second black ink layer on the surface of the second printing surface, and printing a second white ink layer on the surface of the second black ink layer to obtain a composite ink layer; adopting laser engraving to engrave a plurality of hollow holes or a plurality of hollow lines on the composite ink layer to obtain the display cover plate.

14. A display screen, characterized by comprises: the display cover plate of any one of claims 1-7 or the display cover plate prepared by the preparation method of any one of claims 8-12.

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