DISPLAY APPARATUS AND MANUFACTURING METHOD THEREFOR
20230165119 · 2023-05-25
Inventors
Cpc classification
H10K59/8791
ELECTRICITY
International classification
H10K59/80
ELECTRICITY
Abstract
A display apparatus and a manufacturing method therefor. The display apparatus comprises: a substrate; a display device, which is located on the substrate; a touch-control electrode layer, which is located on the side of the display device that faces away from the substrate; and an anti-reflection structure, which is located between the display device and the touch-control electrode layer, wherein the anti-reflection structure comprises transparent dielectric layers and a metal layer, which are arranged in an alternating and stacked manner, the metal layer being located between the transparent dielectric layers, there being at least two transparent dielectric layers, and there being at least one metal layer.
Claims
1. A display apparatus, comprising: a substrate; a display device on the substrate; a touch-control electrode layer on one side of the display device away from the substrate; and an anti-reflection structure between the display device and the touch-control electrode layer, wherein the anti-reflection structure comprises at least two transparent dielectric layers and at least one metal layer which are arranged in an alternating and stacked manner, and the metal layer is between the transparent dielectric layers.
2. The display apparatus according to claim 1, wherein the anti-reflection structure comprises a first transparent dielectric layer, a first metal layer, a second transparent dielectric layer, a second metal layer, and a third transparent dielectric layer which are arranged in the alternating and stacked manner.
3. The display apparatus according to claim 1, further comprising an encapsulation layer between the display device and the touch-control electrode layer, wherein the anti-reflection structure is between the display device and the encapsulation layer.
4. The display apparatus according to claim 3, wherein a material of the transparent dielectric layers is a transparent conductive material.
5. The display apparatus according to claim 1, further comprising an encapsulation layer between the display device and the touch-control electrode layer, wherein the anti-reflection structure is between the encapsulation layer and the touch-control electrode layer.
6. The display apparatus according to claim 5, wherein an orthographic projection of the metal layer on the substrate does not overlap an orthographic projection of a touch-control electrode of the touch-control electrode layer on the substrate.
7. The display apparatus according to claim 5, wherein the anti-reflection structure is on a surface of the touch-control electrode layer facing the display device.
8. The display apparatus according to claim 5, wherein the anti-reflection structure is on a surface of the encapsulation layer facing the touch-control electrode layer.
9. The display apparatus according to claim 8, further comprising a wiring layer between the encapsulation layer and the anti-reflection structure, wherein the wiring layer comprises wiring electrically connected with the metal layer on one side close to the substrate, and the wiring is coupled with a fixed voltage.
10. The display apparatus according to claim 9, comprising a display region and a peripheral region surrounding the display region, wherein the peripheral region has a binding region, the binding region has a binding terminal binding a fixed voltage line, and the wiring is around the peripheral region and is electrically connected with the binding terminal.
11. The display apparatus according to claim 5, further comprising an anti-reflection layer on one side of the touch-control electrode layer away from the substrate, wherein an orthographic projection of the anti-reflection layer on the substrate at least covers an orthographic projection of a touch-control electrode of the touch-control electrode layer on the substrate.
12. The display apparatus according to claim 11, wherein a material of the anti-reflection layer is MoTaOx or a black matrix material.
13. The display apparatus according to claim 11, wherein the touch-control electrode comprises a drive electrode and an induction electrode which are arranged in an insulating cross manner, the display device comprises a plurality of sub-pixels with different light-emitting colors, and orthographic projections of the drive electrode and the induction electrode on the substrate have overlapping regions with each of the sub-pixels.
14. The display apparatus according to claim 11, further comprising a cover plate on one side of the anti-reflection layer away from the substrate.
15. The display apparatus according to claim 1, wherein a material of the transparent dielectric layers is an inorganic material or an organic material, a thickness of the transparent dielectric layer of the inorganic material is in a range of 50 angstroms to 10000 angstroms, and a thickness of the transparent dielectric layer of the organic material is in a range of 50 angstroms to 50000 angstroms.
16. The display apparatus according to claim 1, wherein a material of the metal layer comprises one or a combination of Ti, Mo, Cu, Al or Ag, and a thickness of the metal layer is in a range of 10 angstroms to 1000 angstroms.
17. A manufacturing method for a display apparatus, comprising: forming a display device on a substrate; forming an anti-reflection structure on one side of the display device away from the substrate, wherein the anti-reflection structure comprises at least two transparent dielectric layers and at least one metal layer which are arranged in an alternating and stacked manner, and the metal layer is between the transparent dielectric layers; and forming a touch-control electrode layer on one side of the anti-reflection structure away from the substrate.
18. The manufacturing method according to claim 17, wherein forming the display apparatus comprises: forming a display device on a substrate; and forming an encapsulation layer, a wiring layer, an anti-reflection structure, a touch-control electrode layer, an anti-reflection layer and a cover plate sequentially on one side of the display device away from the substrate.
19. The manufacturing method according to claim 17, wherein forming the display apparatus comprises: forming a display device and an encapsulation layer on a substrate sequentially; forming an anti-reflection layer, a touch-control electrode layer and an anti-reflection structure which are stacked on a cover plate sequentially; and aligning and fitting the substrate with the encapsulation layer formed and the cover plate with the anti-reflection structure formed.
20. The display apparatus according to claim 14, further comprising a protective layer between the anti-reflection layer and the cover plate.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0024]
[0025]
[0026]
[0027]
[0028]
[0029]
[0030]
[0031]
[0032]
[0033]
[0034]
[0035]
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0036] In order to make the objective, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all the embodiments. The embodiments in the present disclosure and features in the embodiments may be mutually combined in the case of no conflict. On the basis of the described embodiments of the present disclosure, all other embodiments obtained by those ordinarily skilled in the art without inventive efforts fall within the protection scope of the present disclosure.
[0037] Unless otherwise defined, the technical or scientific terms used in the present disclosure shall have the usual meanings understood by a person of ordinary skill in the art to which the present disclosure belongs. The word “including” or “containing” and the like used in the present disclosure means that an element or item preceding the word covers an element or item listed after the word and the equivalent thereof, without excluding other elements or items. The word “connection” or “coupling” and the like is not restricted to physical or mechanical connection, but may include electrical connection, whether direct or indirect. The words “inner”, “outer”, “up”, “down” and the like are only configured to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0038] It should be noted that sizes and shapes of all graphs in the drawings do not reflect the true scale, and only intend to illustrate the content of the present disclosure. The same or similar reference numbers represent the same or similar elements or elements with the same or similar functions from beginning to end.
[0039] An embodiment of the present disclosure provides a display apparatus, as shown in
[0040] According to the above display apparatus provided by the embodiment of the present disclosure, the anti-reflection structure 4 is arranged between the display device 2 and the touch-control electrode layer 3, thus the anti-reflection structure 4 avoids the use of a circular polarizer, reduces a thickness of the display apparatus, and improves bending resistance of the display apparatus. The transparent dielectric layers and the metal layer which are arranged in the alternating and stacked manner can reduce light generated by reflection of the display apparatus and dissipate ambient light, thus greatly reducing glare generated by the reflection, reducing an intensity of the external ambient light received by a viewer, enhancing anti-reflection performance of the display apparatus, and thus improving visibility of the display apparatus.
[0041] It should be noted that the transparent dielectric layers refer to a transparent material with a transmissivity in a range of 50% to 99.9%.
[0042] It should be noted that (1) the characteristic of a metal material itself is that its conductivity, reflective ability and absorption ability are strongly related to the thickness; with the increase of the thickness of the metal layer in the anti-reflection structure, the conductivity is high, and it is prone to form a coupling capacitance effect with the touch-control electrode layer; and a way of multi-layer thin metal will be used to increase impedance and reduce influence on touch control; (2) an optical characteristic of the metal material is that the metal material usually shows a reflective characteristic; generally, reflection+transmission+absorption=100%; the thick metal layer will show the characteristics of high reflection, zero transmission and zero absorption; when the metal layer is thinned and a refractive index is adjusted on the surface, the reflectivity can be significantly reduced to be close to 0, mainly showing the transmission and absorption characteristics; and based on experimental results, the metal layer has the lower reflection characteristics after being disassembled into the plurality of layers. In addition, the optical characteristic of the metal material is also significantly related to a film forming quality. Under certain conditions, a single layer of metal layer can also achieve the low reflection characteristic. A structure is a dielectric layer/the metal layer/a dielectric layer, and the dielectric layers are on two sides. Therefore, the two layers of transparent dielectric layer and one layer of metal layer which are arranged in the alternating and stacked manner can realize an anti-reflection function.
[0043] During specific implementation, on the basis of ensuring that the light emitted from the display device passes through the anti-reflection structure as much as possible, the ambient light can be scattered to reduce the glare generated by the reflection. In the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0044] The use of the anti-reflection structure instead of the circular polarizer is illustrated in detail below according to a specific position of the anti-reflection structure in the display apparatus.
[0045] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0046] During specific implementation, the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0047] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0048] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0049] Specifically, for example, when the material of the transparent dielectric layers is the CPL, a refractive index of the transparent dielectric layers is 1.4, the thickness of each of the transparent dielectric layers is 800 angstroms, the metal layer is formed by Ti evaporation, and a thickness of each of the metal layers is 40 angstroms, surface reflectivity of the display apparatus shown in
[0050] During specific implementation, since the cathode is generally arranged on the whole surface, in order to improve the transmissivity, the cathode is manufactured to be very thin, and thus cathode impedance is large, resulting in a large cathode voltage drop, which affects display. In order to solve the problem of the large cathode voltage drop. In the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0051] During specific implementation, when the material of the transparent dielectric layers is the transparent conductive material, the transparent conductive material may be ITO, IZO, etc.
[0052] Specifically, for example, when the material of the transparent dielectric layers is IZO, the refractive index of the transparent dielectric layers is 2.0, the thickness of each of the transparent dielectric layers is 800 angstroms, the metal layer (the first metal layer 42 and the second metal layer 44) is formed by Ti evaporation, and a thickness of each of the metal layers is 35 angstroms, the surface reflectivity of the display apparatus shown in
[0053] During specific implementation, the above display apparatus provided in the embodiment of the present disclosure, as shown in
[0054] During specific implementation, the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0055] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0056] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0057] Specifically, since the touch-control electrode layer adopts a metal grid structure, the touch-control layer is transparent as a whole, so as shown in
[0058] During specific implementation, since the anti-reflection structure is directly arranged between the encapsulation layer and the touch-control electrode layer, in order to prevent the formation of coupling capacitance between the metal layer in the anti-reflection structure and the touch-control electrode layer from affecting the touch control performance, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0059] During specific implementation, in order to reduce the reflectivity of the touch-control electrode layer, the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0060] During specific implementation, the above display apparatus provided in the embodiment of the present disclosure, as shown in
[0061] Specifically, as shown in
[0062] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0063] It should be noted that a certain gap is left between the anti-reflection structure 4 and the encapsulation layer 5 in
[0064] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0065] During specific implementation, in order to avoid the interference of the cathode signal of the display device on the touch-control electrode layer, when the display apparatus shown in
[0066] During specific implementation, the above display apparatus provided by the embodiment of the present disclosure generally has a display region and a peripheral region surrounding the display region, the peripheral region generally has a binding region, the binding region has a binding terminal binding a fixed voltage line, such as a VDD voltage line and a VSS voltage line, and the wiring may be around the peripheral region and be electrically connected with the binding terminal.
[0067] During specific implementation, the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0068] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0069] During specific implementation, in the above display apparatus provided by the embodiment of the present disclosure, as shown in
[0070] The structure shown in
[0071] Embodiment 1: The anti-reflection structure includes the three layers of structure of the transparent dielectric layer, the metal layer and the transparent dielectric layer. The material of the transparent dielectric layer is silicon oxide, the thickness of the transparent dielectric layer is 80 nm, the material of the metal layer is titanium, and the thickness of the metal layer is 5 nm. As shown in
[0072] Embodiment 2: The anti-reflection structure includes the five layers of structure of the first transparent dielectric layer, the first metal layer, the second transparent dielectric layer, the second metal layer and the third transparent dielectric layer. The material of the transparent dielectric layers is silicon oxide, the thickness of the transparent dielectric layer is 80 nm, the material of the metal layer is titanium, and the thickness of the metal layer is 2 nm. As shown in
[0073] Embodiment 3: The anti-reflection structure includes the five layers of structure of the first transparent dielectric layer, the first metal layer, the second transparent dielectric layer, the second metal layer and the third transparent dielectric layer. The material of the transparent dielectric layers is silicon oxide, the thickness of the transparent dielectric layer is 80 nm, the material of the metal layer is titanium, and the thickness of the metal layer is 3.5 nm. It is found through the test that the transmissivity of the cover plate is 40%, and the reflectivity of the cover plate is 1.7%. After matching with the anti-reflection layer in the non-light-emitting region, the reflectivity is reduced from 46% to 5% after being fitted to the surface of the display device.
[0074] It can be seen from the above Embodiments 1 to 3 that the conductivity, reflective ability and absorption ability of the metal material are all strongly related to its thickness. The different conductivities, reflective abilities and absorption abilities may be obtained by adjusting the thickness of the metal layer.
[0075] Based on the same inventive concept, an embodiment of the present disclosure further provides a manufacturing method for a display apparatus, as shown in
[0076] S1001, a display device is formed on a substrate.
[0077] S1002, an anti-reflection structure is formed on one side of the display device away from the substrate, wherein the anti-reflection structure includes transparent dielectric layers and a metal layer which are arranged in an alternating and stacked manner, the metal layer is between the transparent dielectric layers, there are at least two transparent dielectric layers, and there is at least one metal layer.
[0078] S1003, a touch-control electrode layer is formed on one side of the anti-reflection structure away from the substrate.
[0079] According to the above manufacturing method of the display apparatus provided by the embodiment of the present disclosure, the anti-reflection structure is arranged between the display device and the touch-control electrode layer, thus the anti-reflection structure avoids use of a circular polarizer, reduces a thickness of the display apparatus, and improves bending resistance of the display apparatus. The transparent dielectric layers and the metal layer which are arranged in the alternating and stacked manner can reduce light generated by reflection of the display apparatus and scatter ambient light, thus greatly reducing glare generated by the reflection, reducing an intensity of the external ambient light received by a viewer, enhancing anti-reflection performance of the display apparatus, and thus improving visibility of the display apparatus.
[0080] During specific implementation, in the above manufacturing method provided by the embodiment of the present disclosure, as shown in
[0081] S1101, a display device is formed on a substrate.
[0082] S1102, an encapsulation layer, a wiring layer, an anti-reflection structure, a touch-control electrode layer, an anti-reflection layer and a cover plate are sequentially formed on one side of the display device away from the substrate.
[0083] During specific implementation, in the above manufacturing method provided by the embodiment of the present disclosure, as shown in
[0084] S1201, a display device and an encapsulation layer are formed on a substrate sequentially.
[0085] S1202, an anti-reflection layer, a touch-control electrode layer and an anti-reflection structure which are stacked are formed on a cover plate sequentially.
[0086] S1203, the substrate with the encapsulation layer formed and the cover plate with the anti-reflection structure formed are aligned and fitted.
[0087] The manufacturing method for the display apparatus shown in
[0088] The step of manufacturing the display apparatus shown in
[0089] (1) A film layer of an MoTaO.sub.x material is deposited on the cover plate 6.
[0090] (2) A film layer of a metal material is deposited on the basis of step (1), and the metal material is preferably Ti or Al or Mo.
[0091] (3) The film layer of the MoTaO.sub.x material and the film layer of the metal material are etched by exposure on the basis of step (2) to form the anti-reflection layer 8 and a drive electrode 31.
[0092] (4) A film layer of an insulating material is deposited on the basis of step (3) to form an insulating layer 7, and the insulating material is preferably silicon oxide or silicon nitride.
[0093] (5) The film layer of the metal material is deposited on the basis of step (4), and the metal material is preferably Ti or Al or Mo.
[0094] (6) The metal film layer is exposed and etched on the basis of step (5) to form an induction electrode 32.
[0095] (7) A transparent insulating material, preferably silicon oxide, is deposited on the basis of step (6) to form a first transparent dielectric layer 41.
[0096] (8) The film layer of the metal material is deposited by sputtering deposition or electrochemical deposition on the basis of step (7), and the metal material is preferably Ti, Mo, Cu, Al or Ag, with a thickness in a range of 10 A to 1000 A.
[0097] (9) The film layer of the metal material is exposed and etched on the basis of step (8) to form a first metal layer 42.
[0098] (10) The transparent insulating material is deposited by chemical vapor deposition on the basis of step (9). The transparent insulating material is preferably a low-refractive-index material, such as silicon oxide (n=1.46), with a thickness in a range of 50 A to 50000 A so as to form a second transparent dielectric layer 43.
[0099] (11) The film layer of the metal material is deposited by sputtering deposition or electrochemical deposition on the basis of step (10), and the metal material is preferably Ti, Mo, Cu, Al or Ag, with a thickness in a range of 10 A to 1000 A.
[0100] (12) The film layer of the metal material is exposed and etched on the basis of step (11) to form a second metal layer 44.
[0101] (13) The transparent insulating material is deposited by chemical vapor deposition on the basis of step (12). The transparent insulating material is preferably a low-refractive-index material, such as silicon oxide (n=1.46), with a thickness in a range of 50 A to 50000 A so as to form a third transparent dielectric layer 45.
[0102] (14) The display device 2 and the encapsulation layer 5 are formed on the substrate 1 sequentially.
[0103] (15) A cover plate module obtained in step (13) and a display module obtained in step (14) are aligned and fitted to form the display apparatus shown in
[0104] The step of manufacturing the display apparatus shown in
[0105] (1) The display device 2 and the encapsulation layer 5 are formed on the substrate 1 sequentially, and a film layer of a metal material is deposited on one side of the encapsulation layer 5 away from the substrate 1.
[0106] (2) The wiring layer including wiring 9 is formed on a surface of the encapsulation layer 5 by exposure and etching on the basis of step (1), and the wiring 9 is in a non-light-emitting region.
[0107] (3) A transparent insulating material is deposited by chemical vapor deposition on the basis of step (2) to form a first transparent dielectric layer 41. The transparent insulating material is preferably a low-refractive-index material, such as silicon oxide (n=1.46), with a thickness in a range of 50 A to 50000 A.
[0108] (4) The first transparent dielectric layer 41 in step (3) is exposed and etched to form a via hole.
[0109] (5) The film layer of the metal material is deposited by sputtering deposition or electrochemical deposition on the basis of step (4), and the metal material is preferably Ti, Mo, Cu, Al or Ag, with a thickness in a range of 10 A to 1000 A. The film layer of the metal material is in lap joint with the wiring 9.
[0110] (6) The film layer of the metal material is exposed and etched on the basis of step (5) to form a first metal layer 42.
[0111] (7) A low transparent insulating material is deposited by chemical vapor deposition on the basis of step (6) to form a second transparent dielectric layer 43. The transparent insulating material is preferably a low-refractive-index material, such as silicon oxide (n=1.46), with a thickness in a range of 50 A to 50000 A.
[0112] (8) The film layer of the metal material is deposited by sputtering deposition or electrochemical deposition on the basis of step (7), and the film layer of the metal material is preferably Ti, Mo, Cu, Al or Ag, with a thickness in a range of 10 A to 1000 A.
[0113] (9) The film layer of the metal material in step (8) is exposed and etched to form a second metal layer 44.
[0114] (10) The low transparent insulating material is deposited by chemical vapor deposition on the basis of step (9) to form a third transparent dielectric layer 45. The transparent insulating material is preferably a low-refractive-index material, such as silicon oxide (n=1.46), with a thickness in a range of 50 A to 50000 A.
[0115] (11) The film layer of the metal material, preferably Ti or Al or Mo, is deposited on the basis of step (10).
[0116] (12) The film layer of the metal material in step (11) is exposed and etched to form an induction electrode 32.
[0117] (13) An insulating layer 7 is deposited on the basis of step (12), and a material of the insulating layer is preferably silicon oxide or silicon nitride.
[0118] (14) The film layer of the metal material, preferably Ti or Al or Mo, is deposited on the basis of step (13).
[0119] (15) A film layer of an MoTaOx material is deposited on the basis of step (14).
[0120] (16) For step (15), a drive electrode 31 and an anti-reflection layer 8 are formed by exposure and etching.
[0121] (17) A protective layer 10 is deposited on the basis of step (16). A material of the protective layer 10 may be resin, or a passivation layer of silicon nitride or silicon oxide.
[0122] (18) The cover plate 6 is arranged on the basis of step (17) to form the structure shown in
[0123] The above display apparatus provided by the embodiment of the present disclosure may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a displayer, a notebook computer, a digital photo frame, and a navigator.
[0124] The embodiments of the present disclosure provide the display apparatus and the manufacturing method therefor. The anti-reflection structure is arranged between the display device and the touch-control electrode layer, thus the anti-reflection structure avoids the use of the circular polarizer, reduces the thickness of the display apparatus, and improves the bending resistance of the display apparatus. The transparent dielectric layers and the metal layer which are arranged in the alternating and stacked manner can reduce the light generated by reflection of the display apparatus and scatter the ambient light, thus greatly reducing the glare generated by the reflection, reducing the intensity of the external ambient light received by the viewer, enhancing the anti-reflection performance of the display apparatus, and thus improving the visibility of the display apparatus.
[0125] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional modifications and variations on these embodiments once they know the basic creative concept. Therefore, the appended claim intends to be explained as including the preferred embodiments and all modifications and variations falling within the scope of the present disclosure.
[0126] Obviously, those skilled in the art can make various modifications and variations to the embodiment of the present disclosure without departing from the spirit and scope of the embodiment of the present disclosure. In this way, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent art, the present disclosure also intends to include these modifications and variations.