CN115241263A - Cover plate, preparation method thereof and display module - Google Patents
Cover plate, preparation method thereof and display module Download PDFInfo
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- CN115241263A CN115241263A CN202210955648.9A CN202210955648A CN115241263A CN 115241263 A CN115241263 A CN 115241263A CN 202210955648 A CN202210955648 A CN 202210955648A CN 115241263 A CN115241263 A CN 115241263A
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- 239000000758 substrate Substances 0.000 claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 146
- 239000011241 protective layer Substances 0.000 claims description 29
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002310 reflectometry Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 125000001475 halogen functional group Chemical group 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000000994 depressogenic effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- 229920002120 photoresistant polymer Polymers 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The application provides a cover plate, a manufacturing method of the cover plate and a display module, and solves the problem that in the prior art, the display effect near a hole area of a display panel is poor. Wherein, the apron includes: the cover plate substrate comprises a first surface and a second surface which are arranged oppositely; the light shielding layer is positioned on the first surface of the cover plate substrate and at least partially surrounds the preset area of the cover plate substrate; the light guide layer is positioned on the first surface of the cover plate substrate and surrounds the edge of the light shielding layer; the light guide layer is used for changing the propagation path of light so that the light which is vertically incident on the second surface of the cover plate substrate is emitted from the light guide layer at a preset angle.
Description
Technical Field
The application relates to the technical field of display, in particular to a cover plate, a manufacturing method of the cover plate and a display module.
Background
In the related art, holes are often formed on the display panel to form hole regions. When the display terminal is prepared subsequently, the photosensitive elements such as the camera and the like can be arranged on the non-display surface of the display panel and are opposite to the hole area, so that the display panel can be prevented from shielding light rays incident into the photosensitive elements. However, an aperture often appears around the aperture area of the display panel, and the aperture may affect the display effect near the aperture area during the use of the display terminal.
Disclosure of Invention
In view of this, embodiments of the present application provide a cover plate, a manufacturing method thereof, and a display module, so as to solve the problem in the prior art that a display effect near a hole region of a display panel is poor.
The present application provides in a first aspect a cover plate comprising: the cover plate substrate comprises a first surface and a second surface which are arranged oppositely; the light shielding layer is positioned on the first surface of the cover plate substrate and at least partially surrounds the preset area of the cover plate substrate; the light guide layer is positioned on the first surface of the cover plate substrate and surrounds the edge of the light shielding layer; the light guide layer is used for changing the propagation path of light so that the light which is vertically incident on the second surface of the cover plate substrate is emitted from the light guide layer at a preset angle.
In one embodiment, the light guide layer includes a light guide bar having a triangular cross section perpendicular to an extending direction of the light guide bar. The light guide strip with the prism structure is used as the light guide layer, and the light guide effect of all positions of the edge of the light shield layer is ensured to be consistent.
In one embodiment, the triangle is a right triangle, and one leg of the right triangle is in contact with the cover substrate. Under the condition, the light guide strip can be made of a material with a single refractive index, and the manufacturing is simple and easy to realize.
In one embodiment, the light shield layer is annular, and the leaded light layer includes first leaded light strip and second leaded light strip, and first leaded light strip surrounds the outward flange of light shield layer, and second leaded light strip surrounds the inward flange of light shield layer. Set up leaded light strip simultaneously at the inward flange and the outward flange of light shield layer, ensure to correspond because of the first deformation zone of the high formation of light shield layer inside wall and because of the second deformation zone of the high formation of light shield layer outside wall and set up leaded light strip, further improve the halo phenomenon.
In one embodiment, the thickness of the light guide layer is smaller than the thickness of the light shielding layer in the thickness direction of the cover substrate. Avoid the leaded light layer to cause the extrusion to the rete below.
In one embodiment, the cover plate further comprises a protective layer covering the light guide layer, and the surface of the protective layer far away from the light guide layer is a plane. The protective layer can provide protection for the light guide layer, and can form a flat outer surface at the same time.
The second aspect of the present application provides a display module, including: a display panel including a hole region and a deformation region; the cover plate is adhered to the display surface of the display panel through an adhesive layer; in the direction perpendicular to the display surface, orthographic projection of the preset area is overlapped with orthographic projection of the hole area, orthographic projection of the light guide layer is overlapped with orthographic projection of the deformation area, and light emitted from the light guide layer at a preset angle vertically irradiates the deformation area.
In one embodiment, the deformation zone comprises a first deformation subregion and a second deformation subregion; in the direction parallel to the display surface, the hole area, the first deformation sub-area, the light shielding layer and the second deformation sub-area are encircled layer by layer from inside to outside.
In one embodiment, the light guide layer includes a light guide bar having a triangular cross section perpendicular to an extending direction of the light guide bar.
A third aspect of the present application provides a method for manufacturing a cover plate, including: preparing a light guide layer in a first preset area of a cover plate substrate; and preparing a light shielding layer in a second preset area of the cover plate substrate, wherein the second preset area surrounds a third preset area of the cover plate substrate, and the first preset area surrounds the edge of the second preset area.
According to the cover plate, the manufacturing method of the cover plate and the display module, the light shielding layer is arranged on the first surface of the cover plate substrate, the light guide layer is arranged around the light shielding layer, the light guide layer can change the propagation path of light, and the light which is vertically incident to the second surface of the cover plate substrate is emitted from the light guide layer at a preset angle. Subsequently, when the cover plate, the polarizer and the display panel are bonded and fixed, the polarizer forms a concave area due to the thickness of the light shielding layer, the concave area comprises a plane area right facing the light shielding layer and a deformation area surrounding the plane area, and light emitted from the light guide layer at a preset angle is perpendicularly incident to the deformation area of the polarizer. In this case, the incident angles of the light perpendicularly incident to the second surface of the cover substrate in the deformed region and the non-deformed region except the deformed region of the polarizer are both right angles, so that the reflectivities of the deformed region and the non-deformed region are consistent, thereby improving the halo phenomenon in the hole region.
Drawings
Fig. 1 is a schematic structural diagram of a display module in the related art.
Fig. 2 is a schematic partial sectional view of the display module shown in fig. 1 along the line A1 A2.
Fig. 3 is a schematic partial structure diagram of a display module according to a first embodiment of the present application.
Fig. 4 is a schematic cross-sectional view of the hole region shown in fig. 3 along line B1B 2.
Fig. 5 is a partially enlarged view of a region a in fig. 4.
Fig. 6 is a schematic cross-sectional structure view of a display module according to a second embodiment of the present application.
Fig. 7 is a schematic partial structure diagram of the display module shown in fig. 6.
Fig. 8 is a schematic cross-sectional structure view of a display module according to a third embodiment of the present application.
Fig. 9 is a schematic partial structure diagram of the display module shown in fig. 8.
Fig. 10 is a schematic cross-sectional structure view of a display module according to a fourth embodiment of the present application.
Fig. 11 is a schematic cross-sectional structure view of a display module according to a fifth embodiment of the present application.
Fig. 12 is a partial structural view of the display module shown in fig. 11.
Fig. 13 is a schematic partial structure view of a display module according to a sixth embodiment of the present disclosure.
Fig. 14 is a schematic structural diagram of a cover plate according to an embodiment of the present application.
Fig. 15 is a flowchart of a method for manufacturing a cover plate according to an embodiment of the present disclosure.
Detailed Description
As mentioned in the background, an aperture often appears around an aperture area of a display screen, resulting in poor display around the aperture area. The reason for the generation of the aperture will be described with reference to fig. 1 and 2.
Fig. 1 is a schematic structural diagram of a display module in the related art. Fig. 2 is a schematic partial sectional view of the display module shown in fig. 1 along the line A1 A2. As shown in fig. 1 and fig. 2, the display module includes a cover substrate 11, a polarizer 12, and a display panel 13, which are stacked in sequence, and two adjacent cover substrates 11, polarizers 12, and display panels 13 are fixed by adhesive layers 14 (only one adhesive layer 14 is shown in fig. 2).
The display panel 13 includes a display area AA, a non-display area BB surrounding the display area AA, and an aperture area Q, where the aperture area Q may be formed in the display area AA, or may be formed in the non-display area BB, or a part of the aperture area Q may be formed in the display area AA, and the other part may be formed in the non-display area BB. The shape of the hole region Q may be circular, rectangular, arcuate, etc. The number of the hole areas Q can be reasonably set according to actual needs.
A photosensitive element such as a camera is provided on the non-display surface of the display panel 13, and faces the hole area Q. In order to avoid the influence of the light emission of the display panel 13 on the photosensitive elements such as the camera, a circle of light shielding layer 15 is usually disposed on the surface of the cover substrate 11 close to the display panel 13, the light shielding layer 15 at least partially surrounds a predetermined area of the cover substrate 11, and the orthographic projection of the predetermined area overlaps with the hole area Q of the display panel 13 in the direction perpendicular to the display surface. For example, the aperture region Q is circular, and the light-shielding layer 15 is annular surrounding the aperture region Q; for another example, the aperture region Q has an arcuate shape, and the light-shielding layer 15 has an arcuate stripe shape surrounding the arcuate edge of the aperture region Q. The light shielding layer 15 may be an ink coating layer for shielding a gap between the hole region Q and a surrounding region, thereby avoiding a light leakage or light reflection problem. The color of the ink coating is any one or combination of black, white or other colors. By means of the ink coatings of different colors, the light rays of different components can be subjected to targeted filtering to achieve corresponding visual effects.
However, since the light shielding layer 15 has a certain height, the cover is attachedWhen board substrate 11, polarizer 12 and display panel 13 are attached, light-shielding layer 15 may press polarizer 12, resulting in a depression in the corresponding area of polarizer 12, forming a depressed area. The recessed region includes a planar region and an inclined region surrounding the planar region. For convenience of description, the inclined region will be hereinafter referred to as a deformation region S 1 The plane region in the depressed region and the non-depressed region other than the depressed region are collectively referred to as a non-deformed region S 2 。
In this case, the first ambient light L at normal viewing angle 1 Is incident on the deformation region S via the cover substrate 11 1 When the light beam is reflected, the first ambient light L 1 It is incident on the human eye, which is observed at a large viewing angle, deviating from the normal viewing angle. To make the non-deformed region S pass through 2 Reflected second ambient light L 2 The second ambient light L is required to enter the human eye at the same incident angle 2 Is larger than the positive viewing angle. The different light intensities at different viewing angles will result in a deformed region S 1 And a non-deformed region S 2 The reflectivity of (a) is not uniform, resulting in halo around the aperture region Q.
In order to solve the above problems, the present application provides a cover plate, a manufacturing method thereof, and a display module, wherein a light guide layer is disposed around a light shielding layer 15, and the light guide layer corresponds to a deformation region S of a polarizer 12 1 The light guide layer is used for adjusting the propagation path of the light so that the light which is vertically incident to the surface of the cover plate substrate 11 is in the deformation area S 1 And a non-deformed region S 2 Are equal, i.e. normal angle light can be incident perpendicularly to the deformation zone S 1 And a non-deformed region S 2 Further making the deformation zone S 1 And a non-deformed region S 2 The reflectivity of the hole region Q is uniform, thereby improving the halo phenomenon of the hole region Q.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 3 is a schematic partial structure diagram of a display module according to a first embodiment of the present application. Fig. 4 is a schematic cross-sectional view of the hole region shown in fig. 3 along line B1B 2. Fig. 5 is a partially enlarged view of a region a in fig. 4. As shown in fig. 3, 4 and 5, the display module is different from the display module shown in fig. 1 and 2 in that the display module further includes a light guide layer 31. The light guide layer 31 is located on the surface of the cover plate substrate 11 where the light shielding layer 15 is arranged, the light guide layer 31 surrounds the edge of the light shielding layer 15, and the thickness of the light guide layer 31 is smaller than that of the light shielding layer 15. An orthographic projection and deformation region S of the light guide layer 31 in a direction perpendicular to the display surface 1 And (4) overlapping. Taking the light shielding layer 15 as an annular shape as an example, the deformation region S 1 Comprising a first deformation subregion S 11 And a second deformation subregion S 12 First deformation sub-region S 11 Compared to the second deformation sub-zone S 12 Closer to the hole region Q. Accordingly, the light guide layer 31 includes a first annular region surrounding the inner edge of the light shielding layer 15, an orthographic projection of the first annular region in a direction perpendicular to the display surface, and a first deformation sub-region S 11 Overlapping; a second annular region surrounding the outer edge of the light-shielding layer 15, an orthographic projection of the second annular region in a direction perpendicular to the display surface, and a second deformed subregion S 12 And (4) overlapping. In this case, the hole region Q and the first deformation sub-region S are arranged in a direction parallel to the display surface 11 A light-shielding layer 15, a second deformation sub-region S 12 And the layers are encircled from inside to outside. Light guide layer 31 serves to change the propagation path of light such that light perpendicularly incident to the surface of cover substrate 11 may be perpendicularly incident to deformation region S of polarizer 12 1 So that the deformation zone S is formed 1 And a non-deformed region S 2 The same reflectivity, thereby improving the halo phenomenon around the hole region Q. The light guiding layer 31 may be a microlens array.
Fig. 6 is a schematic cross-sectional structure view of a display module according to a second embodiment of the present application. Fig. 7 is a schematic partial structure diagram of the display module shown in fig. 6. As shown in fig. 6 and 7, the display module in this embodiment is different from the display module shown in fig. 3, 4 and 5 in that in this embodiment, the light guide layer includes a light guide strip 61, and the light guide strip 61 extends around the edge of the light shielding layer 15. On the extending direction of perpendicular to light guide strip 61, the cross-section of light guide strip 61 is right triangle, and a right-angle side and the apron base plate 11 contact of light guide strip 61, another right-angle side are located one side that is close to light shield layer 15 of light guide strip 61.
In this case, it is desirable that light perpendicularly incident on the surface of cover substrate 11 be perpendicularly irradiated to deformation region S of polarizer 12 1 Is required to satisfy theta 2 ＝θ 1 +θ 3 ，N 1 ×sinθ 3 ＝N 2 ×sinθ 2 Wherein, theta 1 Is a deformation zone S 1 The inclination angle with respect to the cover substrate 11; theta 2 Is the included angle between the hypotenuse of the right triangle and the cover board substrate 11; theta 3 The refraction angle of the light rays with the positive visual angle, which are incident into the glue layer 14 from the light guide strip 61; n is a radical of hydrogen 1 Is the refractive index of the glue layer 14; n is a radical of 2 Is the index of refraction of light guide strip 61. E.g. N 1 Take 1.47,N 2 Take 1.3, theta 1 Taking 10 degrees to calculate to obtain theta 2 Equal to 60 deg., at which the light perpendicularly incident on the surface of cover substrate 11 may be perpendicularly incident on deformation region S of polarizer 12 1 Thereby making the deformation zone S 1 And a non-deformed region S 2 The same reflectivity, thereby improving the halo phenomenon around the hole region Q.
In this embodiment, as shown in fig. 6, the light guide layer includes a plurality of first light guide bars 611 and a plurality of second light guide bars 612, the plurality of first light guide bars 61 surrounds the outer edge of the light shielding layer 14 layer by layer, and the plurality of second light guide bars 612 surrounds the inner edge of the light shielding layer 14 layer by layer. Deformation zone S 1 The light-shielding layer comprises a first deformation sub-region and a second deformation sub-region, wherein the first deformation sub-region is located on the outer side of the light-shielding layer 14, and the second deformation sub-region is located on the inner side of the light-shielding layer 14. The first light guide bar 611 corresponds to the first deformation sub-region, and the second light guide bar 612 corresponds to the second deformation sub-region. The number n and width l of the first light guide bars 611 1 And the width l of the first deformation subregion 2 Satisfy n × l 1 ≤l 2 ≤(n+1)×l 1 Where n is any positive integer, the number of the first light guide bars 611 may be n or (n + 1)A plurality of; width l of first light guide bar 611 1 The maximum width of the cross section perpendicular to the extending direction of the first light guide bar 611 can be measured by the length of the right-angle side of the cross section right-angled triangle contacting with the cover substrate 11; width l of the first deformation subregion 2 The horizontal length of the first deformation subregion in the cross section perpendicular to the extending direction of the first light guide bar 611 is referred to, and the horizontal length is the length in the direction parallel to the cover substrate 11. The relationship between the number and width of the second light guide bars 612 and the width of the second deformed sub-region is the same, and will not be described in detail here.
Fig. 8 is a schematic cross-sectional structure view of a display module according to a third embodiment of the present application. Fig. 9 is a schematic partial structure view of the display module shown in fig. 8. As shown in fig. 8 and 9, the difference between the display module in this embodiment and the display module shown in fig. 6 and 7 is that, in this embodiment, another right-angle side of the cross section of the light guide strip 81 is located on the side of the light guide strip 81 far from the light shielding layer 15.
In this case, it is desirable that light perpendicularly incident on the surface of cover substrate 11 be perpendicularly irradiated to deformation region S of polarizer 12 1 Is required to satisfy theta 3 ＝θ 1 +θ 2 ，N 1 ×sinθ 3 ＝N 2 ×sinθ 2 . E.g. N 1 Take 1.47,N 2 Take 1.6, theta 1 Taking 10 degrees to calculate to obtain theta 2 Equal to 59.2 deg., at which the light perpendicularly incident on the surface of cover substrate 11 may be perpendicularly incident on deformation region S of polarizer 12 1 So that the deformation zone S is formed 1 And a non-deformed region S 2 The same reflectivity, thereby improving the halo phenomenon around the hole region Q.
Fig. 10 is a schematic cross-sectional structure view of a display module according to a fourth embodiment of the present application. As shown in fig. 10, in the present embodiment, the cross section of the light guide bar 101 is triangular in the direction perpendicular to the extending direction of the light guide bar 101, and the bottom side of the triangle is in contact with the cover substrate 11. In this case, the triangle may be divided into left and right triangles along the high line of the triangle, and then the triangle may be determined with reference to the calculation methods of the embodiments shown in fig. 7 and 9Such that light perpendicularly incident to the surface of cover substrate 11 perpendicularly enters deformation region S of polarizer 12 1 So that the deformation zone S is formed 1 And a non-deformed region S 2 The same reflectivity, thereby improving the halo phenomenon around the hole region Q.
Fig. 11 is a schematic cross-sectional structure view of a display module according to a fifth embodiment of the present disclosure. Fig. 12 is a partial structural view of the display module shown in fig. 11. Referring to fig. 11 and 12, in the present embodiment, the light guide layer includes a light guide strip 111 and a protective layer 112, the light guide strip 111 may adopt the structure of the light guide strip provided in any of the above embodiments, and the protective layer 112 covers the surface of the light guide strip 111 away from the cover substrate 11. For example, the light-shielding layer 15 has a ring shape. The light guide stripe 111 is annular and surrounds the outer edge of the light shielding layer 15. The protective layer 112 is annular and covers the light guide strip 111; alternatively, the protective layer is circular, and covers the light guide bar 111, the light shielding layer 15, and the circular area surrounded by the light shielding layer 15. In one example, the surface of the protective layer 112 facing away from the light guide strip 111 is a plane. The material of the protective layer 112 may be a transparent photoresist material.
Taking the cross section of the light guide strip 111 in the direction perpendicular to the extending direction of the light guide strip 111 as a right triangle, one right-angled side contacting the cover plate substrate 11, and the other right-angled side being located on the side of the light guide strip 111 far away from the light shielding layer 15 as an example, in order to make the light incident perpendicularly to the surface of the cover plate substrate 11 irradiate perpendicularly to the deformation region S of the polarizer 12 1 Need to satisfy N 2 sinθ 2 ＝N 3 sin(θ 2 -θ 4 )，N 3 sinθ 4 ＝N 1 sinθ 1 Wherein N is 3 Is the refractive index of the protective layer 112; theta 4 Is the angle of incidence of normally incident light from the protective layer 112 into the glue layer 14. E.g. N 1 Take 1.47,N 2 Taking 1.35,N 3 Take 1.65, theta 1 Taking 10 degrees to calculate to obtain theta 2 Equal to 42.3 deg., in which case light perpendicularly incident on the surface of cover substrate 11 may be perpendicularly incident on deformation region S of polarizer 12 1 So that the deformation zone S is formed 1 And a non-deformed region S 2 Has the same reflectivity, thereby improvingHalo around the hole region Q.
In one embodiment, the refractive indices of the light guide bar 111 and the protective layer 112 both range from [1.3,1.7]. In this case, the refractive indexes of the light guide strip 111 and the protective layer 112 are both close to the refractive index of the adhesive layer 14, so as to avoid an excessive change of the light path in the light propagation process.
Fig. 13 is a schematic partial structure diagram of a display module according to a sixth embodiment of the present application. As shown in fig. 13, the difference between this embodiment and the display module shown in fig. 11 and 12 is that the cross section of the light guide strip 131 perpendicular to the extending direction of the light guide strip 131 is a right triangle, one right-angled side is in contact with the cover substrate 11, and the other right-angled side is located on one side of the light guide strip 131 close to the light shielding layer 15. The protective layer 132 covers the surface of the light guide bar 131 away from the cover substrate 11. In this case, it is desirable that light perpendicularly incident on the surface of cover substrate 11 be perpendicularly irradiated to deformation region S of polarizer 12 1 Need to satisfy N 2 sinθ 2 ＝N 3 sin(θ 2 +θ 5 )，N 3 sinθ 5 ＝N 1 sinθ 1 Wherein, θ 5 Is the angle of incidence of normally incident light from the protective layer 132 into the glue layer 14. For example, N 1 Take 1.47,N 2 Taking 1.65,N 3 Take 1.35, theta 1 Taking 10 degrees to calculate to obtain theta 2 Equal to 38.2 deg., at which the light perpendicularly incident on the surface of cover substrate 11 may be perpendicularly incident on deformation region S of polarizer 12 1 So that the deformation zone S is formed 1 And a non-deformed region S 2 The same reflectivity, thereby improving the halo phenomenon around the hole region Q.
The application also provides a cover plate. Fig. 14 is a schematic structural diagram of a cover plate according to an embodiment of the present application. As shown in fig. 14 and 4, the cover plate includes a cover plate substrate 11, a light shielding layer 15, and a light guide layer 31. The cover substrate 11 includes a first surface and a second surface opposite to each other. The light-shielding layer 15 is located on the first surface of the cover substrate 11 and surrounds a predetermined region of the cover substrate 11. The predetermined area corresponds to the hole area Q on the display panel 13. The light guide layer 31 is disposed on the first surface of the cover substrate 11, and the light guide layer 31 surrounds the edge of the light shielding layer 15And (4) a flange. The light guide layer 31 is used for changing a propagation path of light, so that the light perpendicularly incident to the second surface of the cover substrate is emitted from the light guide layer 31 at a preset angle. The preset angle depends on the deformation region S of the polaroid 12 after the cover plate substrate 11, the polaroid 12 and the display panel 13 are jointed 1 The inclination angle of the cover substrate 11 is set such that the light perpendicularly incident on the surface of the cover substrate 11 can be perpendicularly incident on the deformation region S of the polarizer 12 1 So that the deformation zone S is formed 1 And a non-deformed region S 2 The same reflectivity, thereby improving the halo phenomenon around the hole region Q.
In one embodiment, the light guide layer 31 includes a light guide strip having a triangular cross section perpendicular to the extending direction of the light guide strip. For example, referring to fig. 6, one of the edges of light guide strip 61 is in contact with cover substrate 11, and the other edge is located on the side of light guide strip 61 near light shield layer 15. For another example, referring to fig. 8, one leg of light guide strip 61 is in contact with cover substrate 11, and the other leg is on the side of light guide strip 61 away from light shielding layer 15. The light guide layer of the light guide strip structure is simple in principle and easy to implement.
In one embodiment, referring to fig. 6, the light guide layer includes a plurality of first light guide bars 611 and a plurality of second light guide bars 612, the plurality of first light guide bars 611 surround the outer edge of the light shielding layer 15 layer by layer, and the plurality of second light guide bars 612 surround the inner edge of the light shielding layer 15 layer by layer. In this case, the deformation region S can be ensured 1 The optional position all correspond and be provided with the leaded light layer, and then ensure that whole display module assembly reflectivity everywhere is the same.
In one embodiment, referring to fig. 11, the light guide layer further includes a protective layer 112, and the protective layer 112 covers the light guide strip 111. In one example, the surface of the protective layer 112 facing away from the light guide strip 111 is a plane. The protective layer 112 can protect the light guide bar 111 and prevent the light guide bar 111 from being damaged by external force.
The application also provides a preparation method of the cover plate. Fig. 15 is a flowchart of a method for manufacturing a cover plate according to an embodiment of the present application. As shown in fig. 15, the method 150 for preparing the cover plate includes:
step S152, referring to fig. 14, prepares the light guiding layer 31 in the first predetermined region of the cover substrate 11.
The light guide layer 31 may be prepared using a nanoimprint process. The cover substrate 11 is, for example, a glass substrate. The shape and position of the first predetermined area are reasonably selected according to actual requirements. For example, the first predetermined region includes a first predetermined sub-region and a second predetermined sub-region, which are concentric rings.
In step S154, the light shielding layer 15 is formed on a second predetermined area of the cover substrate 11, wherein the second predetermined area is surrounded by the first predetermined area.
Still taking the cover plate shown in fig. 14 as an example, the second predetermined region is an annular region, the second predetermined region, the first predetermined sub-region and the second predetermined sub-region are concentric, and the first predetermined sub-region, the second predetermined region and the second predetermined sub-region surround layer by layer.
According to the method for preparing the cover plate provided by the embodiment of the application, the execution sequence of the step S152 and the step S154 can be interchanged. In contrast, since the thickness of the light guide layer 31 is smaller than the thickness of the light shielding layer 15, the step S152 is performed first, and then the step S154 is performed, so that a gap between the light shielding layer 15 and the mask plate can be prevented from being generated, and the preparation precision of the light guide layer 31 can be prevented from being affected.
In one embodiment, as shown in fig. 15, before step S154, the method further includes:
step S153 is to prepare a protective layer covering the light guide layer 31. The protective layer may be annular, in which case the protective layer covers only the light guiding layer 31; the protective layer may also be circular, in which case the protective layer covers the light guiding layer 31 and the area surrounded by the light guiding layer 31. The protective layer can provide the protection for light guide strip 31, avoids light guide strip 31 to receive external effort and cause the damage.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A cover plate, comprising:
the cover plate substrate comprises a first surface and a second surface which are arranged oppositely;
a light shielding layer positioned on the first surface of the cover substrate, the light shielding layer at least partially surrounding a predetermined area of the cover substrate;
the light guide layer is positioned on the first surface of the cover plate substrate and surrounds the edge of the light shielding layer; the light guide layer is used for changing the propagation path of light so that the light vertically incident on the second surface of the cover plate substrate is emitted from the light guide layer at a preset angle.
2. The cover plate according to claim 1, wherein the light guiding layer comprises light guiding strips, and the cross sections of the light guiding strips are triangular in a direction perpendicular to the extending direction of the light guiding strips.
3. The decking of claim 2, wherein the triangle is a right triangle, one leg of the right triangle being in contact with the decking substrate.
4. The cover sheet according to claim 2 or 3, wherein the light shielding layer is annular, the light guiding layer comprises a first light guiding strip and a second light guiding strip, the first light guiding strip surrounds an outer edge of the light shielding layer, and the second light guiding strip surrounds an inner edge of the light shielding layer.
5. The cover sheet according to any one of claims 1 to 3, wherein the light guide layer has a thickness smaller than that of the light shielding layer in a thickness direction of the cover sheet substrate.
6. The cover sheet according to any one of claims 1 to 3, further comprising a protective layer covering the light guiding layer, wherein a surface of the protective layer remote from the light guiding layer is a plane.
7. A display module, comprising:
a display panel including a hole region and a deformation region; and
the cover plate of any one of claims 1-6, the cover plate being attached to the display surface of the display panel by a layer of glue; in the direction perpendicular to the display surface, the orthographic projection of the preset area is overlapped with the hole area, the orthographic projection of the light guide layer is overlapped with the deformation area, and light rays emitted from the light guide layer at the preset angle are vertically irradiated onto the deformation area.
8. The display module according to claim 7, wherein the light guide layer comprises a light guide bar, and a cross section of the light guide bar is triangular in a direction perpendicular to an extending direction of the light guide bar.
9. The display module according to claim 7 or 8, further comprising a protective layer located between the light guide layer and the adhesive layer; in a direction perpendicular to the display surface, the orthographic projection of the protective layer covers the light guide layer.
10. A method of making a cover plate, comprising:
preparing a light guide layer in a first preset area of a cover plate substrate;
preparing a light shielding layer in a second preset area of the cover plate substrate, wherein the second preset area surrounds a third preset area of the cover plate substrate, and the first preset area surrounds the edge of the second preset area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210955648.9A CN115241263A (en) | 2022-08-10 | 2022-08-10 | Cover plate, preparation method thereof and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210955648.9A CN115241263A (en) | 2022-08-10 | 2022-08-10 | Cover plate, preparation method thereof and display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115241263A true CN115241263A (en) | 2022-10-25 |
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ID=83680308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210955648.9A Pending CN115241263A (en) | 2022-08-10 | 2022-08-10 | Cover plate, preparation method thereof and display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115241263A (en) |
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2022
- 2022-08-10 CN CN202210955648.9A patent/CN115241263A/en active Pending
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