Touch display screen, its glass cover plate and manufacturing method

Abstract

The present invention relates to a touch display screen, its glass cover plate and manufacturing method. The glass cover plate includes a glass body, the glass body includes a first surface and a second surface arranged opposite to each other, a side surface perpendicular to the first surface and the second surface, a first inclined plane connecting the first surface and the side surface, an arc surface connecting the first surface and the first inclined plane, and a second inclined plane connecting the second surface and the side surface. The glass body has a visible area and a non-visible area surrounding the visible area. The side line where the arc surface is connected to the first surface is the first side line, the side line where the arc surface is connected to the first inclined plane is the second side line, and the first side line is located within the visible area. The glass cover plate has a 3D visual effect and a relatively low manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the field of touch technologies, and particularly to a touch display screen, a glass cover plate thereof, and a manufacturing method thereof. Background Art

[0002] A touch display screen generally includes a glass cover plate for contacting with fingers. Traditional glass cover plates are 2D glasses (flat glasses without arc designs), and gradually 2.5D glasses (flat in the middle and arc-designed at the edges) and 3D glasses (entirely arc-designed) have emerged. The development of glass cover plates from 2D glasses to 3D glasses improves the overall visual and tactile experience of the touch display screen. 3D glass cover plates require multiple processes such as hot bending, with high equipment investment requirements and low yields, resulting in high overall costs. Although 2.5D glass can be formed by a relatively low-cost CNC (Computer Numerical Control) process, its overall visual and tactile experience is inferior to that of 3D glass cover plates. Summary of the Invention

[0003] Based on this, it is necessary to provide a touch display screen, a glass cover plate thereof, and a manufacturing method thereof, which have a 3D visual effect and relatively low manufacturing costs.

[0004] A glass cover plate includes a glass body. The glass body includes a first surface and a second surface that are oppositely arranged, a side surface that is perpendicular to the first surface and the second surface, a first inclined plane connecting the first surface and the side surface, an arc surface connecting the first surface and the first inclined plane, and a second inclined plane connecting the second surface and the side surface;

[0005] Wherein, the glass body has a visible area and a non-visible area surrounding the visible area. The side line where the arc surface is connected to the first surface is a first side line, and the side line where the arc surface is connected to the first inclined plane is a second side line. The first side line is located within the visible area.

[0006] By providing the first inclined plane, the arc surface, and the second inclined plane on the above glass body, after the glass body is assembled on the touch display screen, it has the visual and touch effects of 3D glass. That is, the above glass body, which is essentially 2.5D, has approximately the same visual and touch effects as real 3D glass. The above glass body is a visual 3D glass. The above glass body can be manufactured by a relatively simple CNC cutting technology, which can significantly reduce equipment costs and reduce the number of manufacturing processes, thereby reducing production costs.

[0007] In one embodiment, the direction from the first surface to the second surface is the first direction, the direction from the first side line to the plane of the side surface is the second direction, and the direction from the side line where the first inclined plane is connected to the arc surface to the side line where the first inclined plane is connected to the side surface is the third direction. The height of the first surface and the second surface in the first direction is H1, the height of the first side line and the first surface in the first direction is 0, the height of the second side line and the plane of the first surface in the first direction is H2, the length of the side surface in the first direction is H3, the length of the arc surface in the second direction is L1, and the length of the first inclined plane in the third direction is L2. Among them, H1:H2:H3:L1:L2 is 4-15:3-7:1-5:20-60:0.5-2. By setting the first inclined plane, the arc surface, and the second inclined plane, and optimizing H2, H3, L1, and L2 according to H1, the visual effect and touch effect of the glass body assembled on the touch display screen are better. Moreover, after optimizing H2, H3, L1, and L2 according to H1, it is more conducive to CNC cutting.

[0008] In one embodiment, H1:H2:H3:L1:L2 is 7-12:5-7:2-4:30-50:1. While ensuring the visual and touch effects, it can also avoid the appearance of surfaces with too small dimensions, which is more conducive to CNC cutting.

[0009] In one embodiment, H1 is 0.4-1.5 mm, H2 is 0.3-0.7 mm, H3 is 0.1-0.5 mm, L1 is 2-6 mm, and L2 is 0.05-0.2 mm. The glass cover plate with such dimensions can ensure the visual and touch effects while making the glass cover plate thin and light.

[0010] In one embodiment, the direction from the side line where the second inclined plane is connected to the second surface to the side line where the second inclined plane is connected to the side surface is the fourth direction, and the length of the second inclined plane in the fourth direction is L3, and L3 is greater than L2. After the glass cover plate is attached to the touch display component and then assembled into the rear cover shell, glue can be applied at the second inclined plane to connect the glass cover plate and the rear cover shell. Since L3 is greater than L2, the second inclined plane has a relatively large glue application area, which is convenient for glue application and also convenient for the firm connection between the glass cover plate and the rear cover shell.

[0011] In one embodiment, the first inclined plane is arranged at 135° with the side surface, and the second inclined plane is arranged at 135° with the side surface. That is, the first inclined plane and the second inclined plane are symmetrically arranged, so as to simplify CNC cutting while ensuring the visual and touch effects.

[0012] In one embodiment, the glass body is in the shape of a cuboid. The side surface includes a longer first side surface and a shorter second side surface. The arc surface and the first inclined plane are disposed between the first side surface and the first plane, and the second inclined plane is disposed between the first side surface and the second plane. Compared with performing CNC cutting on all four sides of the glass body to achieve a 3D effect, only performing CNC cutting on the upper and lower sides can simplify the processing technology.

[0013] In one embodiment, a chamfered corner is further formed at the end of the first side line. The provision of the chamfered corner can make the overall glass cover plate more rounded and look softer and more comfortable.

[0014] A touch display screen includes:

[0015] a rear cover case; and

[0016] the above-mentioned glass cover plate, wherein the second surface, the second inclined plane and the side surface are enclosed within the rear cover case, and the first surface, the arc surface and at least part of the first inclined plane are exposed from the rear cover case.

[0017] The above touch display screen has a 3D visual effect and a touch effect.

[0018] A method for manufacturing a glass cover plate includes the following steps:

[0019] Providing a glass substrate having opposite first processing surface and second processing surface, and a side processing surface vertically connecting the first processing surface and the second processing surface;

[0020] CNC cutting the connection between the first processing surface and the side processing surface and the connection between the second processing surface and the side processing surface to form the side surface, the second inclined plane and a to-be-processed inclined plane; and

[0021] CNC cutting the first processing surface and the to-be-processed inclined plane to form the arc surface and the first inclined plane.

[0022] Using the above manufacturing method can produce a glass cover plate with a 3D visual effect and a touch effect. The production of a glass cover plate with a 3D visual effect and a touch effect by CNC cutting technology is relatively simple, and can greatly reduce the equipment cost and reduce the manufacturing process steps, thereby reducing the production cost. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a touch display screen according to an embodiment;

[0024] Figure 2 is a schematic structural diagram of a glass body according to an embodiment;

[0025] Figure 3 is the sectional view along line A-A in Figure 2 ;

[0026] Figure 4 is Figure 3 the partial enlarged view of one end of

[0027] Figure 5 is Figure 4 the partial enlarged view of one end of

[0028] Figure 6 is the structural schematic diagram of the glass body of another embodiment. Specific Embodiment

[0029] The touch display screen, its glass cover plate and manufacturing method will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] As Figure 1 shown, a touch display screen 10 of an embodiment includes a glass cover plate 12, a touch display component 14, an optically clear adhesive (OCA) layer connecting the glass cover plate 12 and the touch display component 14, and a rear cover case. After the glass cover plate 12 and the touch display component 14 are bonded, they are assembled in the rear cover case.

[0031] The glass cover plate 12 will be introduced in detail below. As Figure 1 shown, the glass cover plate 12 includes a glass body 100, an ink layer 200, and a coating layer 300. As Figure 2 shown, the glass body 100 has a visible area 100a and a non-visible area 100b surrounding the visible area 100a. As Figure 3 and Figure 4 shown, the glass body 100 includes a first surface 110 and a second surface 120 (i.e., the first surface 110 and the second surface 120 are parallel to each other) arranged oppositely, and a side surface 130 perpendicular to the first surface 110 and the second surface 120. As Figure 4 and 5 shown, the glass body 100 further includes a first inclined plane 140 connecting the first surface 110 and the side surface 130, an arc surface 150 connecting the first surface 110 and the first inclined plane 140, and a second inclined plane 160 connecting the second surface 120 and the side surface 130. Among them, the first inclined plane 140 is inclined in the direction of the first surface 110, and the second inclined plane 160 is inclined in the direction of the side surface 130. The connecting line of the arc surface 150 and the first surface 110 is the first connecting line 152, and the connecting line of the arc surface 150 and the first inclined plane 140 is the second connecting line 154. The first connecting line 152 is located in the visible area 100a.

[0032] By providing the first inclined plane 140, the arc surface 150, and the second inclined plane 160, the glass body 100 has a visual and touch effect of 3D glass after being assembled on the touch display screen 10. That is, the glass body 100, which is essentially 2.5D, has a visual and touch effect substantially the same as that of real 3D glass, and the glass body 100 is a visual 3D glass. The glass body 100 can be manufactured using relatively simple CNC cutting technology, which can significantly reduce equipment costs and reduce manufacturing processes, thereby reducing production costs.

[0033] Further, as Figure 4 and Figure 5 shown, the direction from the first surface 110 to the second surface 120 is the first direction, the height of the first surface 110 and the second surface 120 in the first direction is H1, and H1 corresponds to the first direction. The height of the first edge line 152 of the arc surface 150 and the first surface 110 in the first direction is 0 (the number 0), the height of the second edge line 154 of the arc surface 150 and the plane where the first surface 110 is located in the first direction is H2, and the height of the side surface 130 in the first direction is H3. The direction from the first edge line 152 to the plane where the side surface 130 is located is the second direction, the length of the arc surface 150 in the second direction is L1, and L1 corresponds to the second direction. The direction from the edge line where the first inclined plane 140 is connected to the arc surface 150 to the edge line where the first inclined plane 140 is connected to the side surface 130 is the third direction, the length of the first inclined plane 140 in the third direction is L2, and L2 corresponds to the third direction. The direction from the edge line where the second inclined plane 160 is connected to the second surface 120 to the edge line where the second inclined plane 160 is connected to the side surface 130 is the fourth direction. The length of the second inclined plane 160 in the fourth direction is L3, and L3 corresponds to the fourth direction. Among them, H1:H2:H3:L1:L2 is 4 - 15:3 - 7:1 - 5:20 - 60:0.5 - 2.

[0034] By providing the first inclined plane 140, the arc surface 150, and the second inclined plane 160, and optimizing H2, H3, L1, and L2 according to H1, the visual and touch effects of the glass body 100 assembled on the touch display screen 10 are better. Moreover, after optimizing H2, H3, L1, and L2 according to H1, it is more conducive to CNC cutting.

[0035] Further, in this embodiment, H1:H2:H3:L1:L2 is 7 - 12:5 - 7:2 - 4:30 - 50:1. Preferably, H1:H2:H3:L1:L2 is 7 - 12:5 - 7:3 - 4:40 - 50:1. After further optimizing H2, H3, L1, and L2, while ensuring the visual and touch effects, it can also avoid the appearance of surfaces with too small dimensions, which is more conducive to CNC cutting.

[0036] In this embodiment, the glass cover plate 100 is mainly applied to touch display screens (screen sizes of 4.0 - 10.0 inches) with relatively small sizes such as smart phones and tablets. Preferably, H1 is 0.4 - 1.5 mm, H2 is 0.3 - 0.7 mm, H3 is 0.1 - 0.5 mm, L1 is 2 - 6 mm, and L2 is 0.05 - 0.2 mm. The glass cover plate 100 of this size can ensure visual and touch effects while also making the glass cover plate 100 thin and light.

[0037] Furthermore, in this embodiment, L3 is greater than L2. Preferably, H1:H2:H3:L1:L2:L3 is 4 - 15:3 - 7:1 - 5:20 - 60:0.5 - 2:1 - 2. After the glass cover plate 100 is attached to the touch display member 14 and then assembled into the rear cover case, glue can be applied at the second inclined plane 160 to connect the glass cover plate 100 to the rear cover case. Since L3 is greater than L2, the second inclined plane 160 has a relatively large glue application area, which is convenient for glue application and also convenient for firmly connecting the glass cover plate 100 to the rear cover case.

[0038] Furthermore, in this embodiment, preferably, the first inclined plane 140 and the side surface 130 are arranged at 135°, and the second inclined plane 160 and the side surface 130 are arranged at 135°. That is, the first inclined plane 140 and the second inclined plane 160 are symmetrically arranged, thus ensuring visual and touch effects while also simplifying CNC cutting.

[0039] Furthermore, as Figure 2 shown, in this embodiment, the glass body 100 is in the shape of a cuboid. The side surface 130 includes a relatively long first side surface 132 and a relatively short second side surface 134. The arc surface 150 and the first inclined plane 140 are provided between the first side surface 132 of the first side line and the first plane 110, and the second inclined plane 160 is provided between the first side surface 132 and the second plane 120. That is, in this embodiment, only on the relatively long two sides (left and right sides) of the glass body 100, the first inclined plane 140, the arc surface 150, and the second inclined plane 160 are respectively formed, and the relatively short two sides (upper and lower sides) of the glass body 100 are not processed, that is, the first inclined plane 140, the arc surface 150, and the second inclined plane 160 are not respectively formed on the relatively short two sides (upper and lower sides) of the glass body 100. Compared with performing CNC cutting on all four sides of the glass body 100 to have a 3D effect, only performing CNC cutting on the upper and lower sides can simplify the processing technology.

[0040] In other embodiments, especially when the touch display screen can be full-screen displayed, the first inclined plane 140, the arc surface 150 and the second inclined plane 160 can also be formed on the relatively shorter two sides (the upper and lower sides) of the glass body 100 respectively, so that the touch display screen has a better 3D effect. That is, the arc surface 150 and the first inclined plane 140 are also disposed between the second side surface 134 and the first plane 110, and the second inclined plane 160 is also disposed between the second side surface 134 and the second plane 120.

[0041] Further, as Figure 6 shown, in this embodiment, a chamfered corner 170 is also formed at the end of the first side line 152. The provision of the chamfered corner 170 can make the overall glass cover plate 12 more rounded and look softer and more comfortable. Specifically, in this embodiment, the first side line 152 extends to the corner of the glass body 100, and the chamfered corner 170 is located at the corner of the glass body 100.

[0042] As Figure 1 and Figure 2 shown, the ink layer 200 is disposed on the second surface 120 and located in the non-visible area 100b.

[0043] The coating layer 300 covers the first surface 110 and the arc surface 150. The coating layer 300 is at least one of an anti-fingerprint layer, an anti-glare layer and an anti-reflection layer. When the coating layer 300 is at least two of an anti-fingerprint layer, an anti-glare layer and an anti-reflection layer, the anti-fingerprint layer is away from the first surface 110, and the anti-glare layer, the anti-reflection layer or the whole formed by the anti-glare layer and the anti-reflection layer (the positions of the two in the whole can be interchanged with the anti-fingerprint layer) is located between the anti-fingerprint layer and the first surface 110.

[0044] The material of the anti-fingerprint layer is a fluorosilicon polymer compound; the material of the anti-reflection layer can be a high refractive index substance or a low refractive index substance. Specifically, the high refractive index substance is Ti 3 O 5 、Nb 2 O 5 or Si 3 N 4 ,and the low refractive index substance is SiO 2 .

[0045] After the glass cover plate 12 is attached to the touch display member 14, it is assembled in the rear cover case. Specifically, the second surface 120, the side surface 130 and the second inclined plane 160 are wrapped in the rear cover case, while the first surface 110, the arc surface 150 and at least part of the first inclined plane 140 are exposed from the rear cover case. At least part of the first inclined plane 140 being exposed from the rear cover case can further improve the touch effect compared with the first inclined plane 140 being completely wrapped in the rear cover case.

[0046] In this embodiment, a method for manufacturing a glass cover plate is further provided, including the following steps:

[0047] Step S410: Provide a glass substrate, which has opposite first and second processing surfaces, and a side processing surface perpendicularly connecting the first and second processing surfaces;

[0048] Step S420: CNC cut the joints between the first processing surface and the side processing surface and between the second processing surface and the side processing surface to form a side surface, a second inclined plane, and a to-be-processed inclined plane;

[0049] Step S430: CNC cut the first processing surface and the to-be-processed inclined plane to form an arc surface and a first inclined plane.

[0050] In this embodiment, the side surface, the second inclined plane, and the to-be-processed inclined plane form an isosceles structure, and the second inclined plane and the to-be-processed inclined plane are respectively the waists of the isosceles structure, that is, the length of the second inclined plane in the fourth direction is the same as the length of the to-be-processed inclined plane in the third direction. When forming the arc surface and the first inclined plane, the arc surface will extend to the area where the to-be-processed inclined plane is located, so that the length of the first inclined plane in the third direction is less than the length of the second inclined plane in the fourth direction.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A glass cover plate, characterized in that, it includes a glass body, the glass body includes a first surface and a second surface arranged opposite to each other, a side surface perpendicular to the first surface and the second surface, a first inclined plane connecting the first surface and the side surface, an arc surface connecting the first surface and the first inclined plane, and a second inclined plane connecting the second surface and the side surface; wherein, the glass body has a visible area and a non-visible area surrounding the visible area, the side line where the arc surface is connected to the first surface is the first side line, the side line where the arc surface is connected to the first inclined plane is the second side line, and the first side line is located within the visible area; The direction from the first surface to the second surface is the first direction, the direction from the first side line to the plane where the side surface is located is the second direction, the direction from the side line where the first inclined plane is connected to the arc surface to the side line where the first inclined plane is connected to the side surface is the third direction, the height of the first surface and the second surface in the first direction is H1, the height of the first side line and the first surface in the first direction is 0, the height of the second side line and the plane where the first surface is located in the first direction is H2, the length of the side surface in the first direction is H3, the length of the arc surface in the second direction is L1, the length of the first inclined plane in the third direction is L2, wherein, H1:H2:H3:L1:L2 is 4-15:3-7:1-5:20-60:0.5-2.

2. The glass cover plate according to claim 1, characterized in that H1:H2:H3:L1:L2 is 7-12:5-7:2-4:30-50:

1.

3. The glass cover plate according to claim 1, characterized in that, H1 is 0.4-1.5 mm, H2 is 0.3-0.7 mm, H3 is 0.1-0.5 mm, L1 is 2-6 mm, L2 is 0.05-0.2 mm.

4. The glass cover plate according to claim 1, characterized in that, The direction from the side line where the second inclined plane is connected to the second surface to the side line where the second inclined plane is connected to the side surface is the fourth direction, the length of the second inclined plane in the fourth direction is L3, and L3 is greater than L2.

5. The glass cover plate according to claim 1, characterized in that, The first inclined plane and the side surface are arranged at 135°, and the second inclined plane and the side surface are arranged at 135°.

6. The glass cover plate according to claim 1, characterized in that, The glass body is in a cuboid shape, the side surface includes a longer first side surface and a shorter second side surface, the arc surface and the first inclined plane are arranged between the first side surface and the first plane, and the second inclined plane is arranged between the first side surface and the second plane.

7. The glass cover plate according to claim 6, characterized in that, A chamfered corner is further formed at the end of the first side line.

8. A touch display screen, characterized in that, it includes: a rear cover case; and The glass cover plate according to any one of claims 1-7, wherein the second surface, the second inclined plane and the side surface are enclosed within the rear cover housing, and the first surface, the arc surface and at least a part of the first inclined plane are exposed from the rear cover housing.

9. A method for manufacturing the glass cover plate according to claim 1, characterized in that it comprises the following steps: providing a glass substrate having opposite first and second processing surfaces, and a side processing surface perpendicularly connecting the first and second processing surfaces; CNC cutting the joints of the first processing surface and the side processing surface and the joints of the second processing surface and the side processing surface to form the side surface, the second inclined plane and the to-be-processed inclined plane; and CNC cutting the first processing surface and the to-be-processed inclined plane to form the arc surface and the first inclined plane.

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