CN-122024584-A - Display screen supporting plate, manufacturing method thereof, display screen assembly and electronic equipment

Abstract

The invention relates to a display screen supporting plate, a manufacturing method of the display screen supporting plate, a display screen assembly and electronic equipment. The display screen supporting plate is provided with a substrate layer, the substrate layer is provided with a first supporting surface and a second supporting surface which are oppositely arranged, and at least one of the first supporting surface and the second supporting surface is provided with a rigidity enhancing layer. The substrate layer is a titanium alloy layer or an aluminum alloy layer, the rigidity enhancing layer is a hard chromium layer, or the substrate layer is a titanium alloy layer, and the rigidity enhancing layer is a nitriding layer. The display screen supporting plate can meet the requirements of important reduction and rigidity.

Inventors

• WU XIANMING
• LIU YU
• ZOU LINGYUN
• LUO YONGHUI
• DING YI
• FAN PENGHUI
• Gong Heqing

Assignees

• OPPO广东移动通信有限公司

Dates

Publication Date

20260512

Application Date

20230530

Claims (19)

1. 1. The display screen supporting plate is characterized by comprising a substrate layer, wherein the substrate layer is provided with a first supporting surface and a second supporting surface which are oppositely arranged, and a rigidity enhancing layer is arranged on the first supporting surface or the second supporting surface; The substrate layer is a titanium alloy layer or an aluminum alloy layer, the rigidity enhancing layer is a hard chromium layer, a connection enhancing layer is arranged between the substrate layer and the rigidity enhancing layer, and the connection enhancing layer is a nickel layer, or The substrate layer is a titanium alloy layer, and the rigidity enhancing layer is a nitriding layer.
2. 2. The display screen support plate of claim 1, wherein the display screen support plate has an overall thickness of 0.1mm to 0.17mm; the thickness of the titanium alloy layer is 0.05-0.12 mm, or the thickness of the aluminum alloy layer is 0.04-0.15 mm.
3. 3. The display support plate of claim 2, wherein the hard chrome layer has a thickness of 0.003mm to 0.02mm.
4. 4. The display screen support plate of claim 2, wherein the nitrided layer has a thickness of 0.01mm to 0.05mm.
5. 5. The display support plate of claim 1, wherein the titanium alloy layer is made of at least one of TA1 titanium alloy, TA2 titanium alloy, TA3 titanium alloy, TA4 titanium alloy, TC5 titanium alloy, TA7 titanium alloy and TC4 titanium alloy, or The material of the aluminum alloy layer is at least one selected from the group consisting of a 2-series aluminum alloy, a 5-series aluminum alloy, a 6-series aluminum alloy and a 7-series aluminum alloy.
6. 6. The display screen support plate of any one of claims 1-5, wherein a plurality of openings are provided in the display screen support plate.
7. 7. The display support plate of any one of claims 1-5, wherein the thickness of the base layer is 0.05 mm-0.12 mm and/or the thickness of the base layer is 40% -80% of the total thickness of the display support plate.
8. 8. The preparation method of the display screen supporting plate is characterized by comprising the following steps of: Providing a substrate layer, wherein the substrate layer is provided with a first supporting surface and a second supporting surface which are oppositely arranged; manufacturing a rigidity enhancement layer on the first supporting surface or the second supporting surface; The substrate layer is a titanium alloy layer or an aluminum alloy layer, the rigid reinforcing layer is a hard chromium layer, a connection reinforcing layer is formed on a supporting surface of the substrate layer for arranging the rigid reinforcing layer before forming the rigid reinforcing layer, the rigid reinforcing layer is formed on the connection reinforcing layer, or The substrate layer is a titanium alloy layer, and the rigidity enhancing layer is a nitriding layer.
9. 9. The method of manufacturing a display support plate according to claim 8, wherein the hard chrome layer is formed by hard chrome plating, and the process parameters of the hard chrome plating include: The adopted chromium-containing electroplating solution comprises chromic anhydride with the concentration of 220 g/L-260 g/L and sulfuric acid with the concentration of 2 g/L-3 g/L, wherein the temperature of the chromium-containing electroplating solution is 55 ℃ to 65 ℃ and the current density is 15A/dm 2 ~30A/dm 2 .
10. 10. The method of manufacturing a display support plate according to claim 8, wherein the method of manufacturing the base layer comprises the steps of: obtaining an alloy sheet, wherein the alloy sheet is a titanium alloy sheet or an aluminum alloy sheet; Pretreating at least one surface of the alloy sheet, which is ready to form the hard chromium layer; the pretreatment includes one or more of a blasting treatment, an etching treatment, and an activation treatment.
11. 11. The method of manufacturing a display screen support plate according to claim 10, wherein the pretreatment includes the blasting treatment, the etching treatment, and the activation treatment performed in this order.
12. 12. The method of manufacturing a display screen support plate of claim 8, further comprising the steps of: Post-processing the display screen supporting plate with the hard chromium layer; The post-treatment includes at least one of a dehydrogenation treatment and a heat treatment.
13. 13. The method of manufacturing a display screen support plate according to claim 12, wherein the heat treatment comprises the steps of: And heating the display screen support plate to 650-850 ℃ in a vacuum environment, and preserving heat for 3-5 hours.
14. 14. The method for manufacturing a display-screen support plate according to claim 8, wherein the nitriding layer is formed by nitriding treatment selected from at least one of salt bath nitriding treatment, gas nitriding treatment, and plasma nitriding treatment.
15. 15. The method of manufacturing a display screen support plate according to claim 14, wherein the nitriding treatment satisfies at least one of the following characteristics: (1) The nitriding treatment comprises the salt bath nitriding treatment, and the step of the salt bath nitriding treatment comprises the following steps: Carrying out salt bath on the workpiece at 700-900 ℃ by cyanide for 1-3 hours; (2) The nitriding treatment comprises the gas nitriding treatment, and the step of the gas nitriding treatment comprises the following steps: placing the workpiece in ammonia or nitrogen under normal pressure at 800-1000℃, or Placing the workpiece in ammonia gas with the pressure of 1.1-1.3 MPa at 800-1000 ℃; (3) The nitriding treatment includes the plasma nitriding treatment, and the step of the plasma nitriding treatment includes: The nitrogen-containing gas is decomposed and ionized into nitrogen ions, and the nitrogen ions bombard the surface of the workpiece under the action of an electric field.
16. 16. The method of manufacturing a display support plate according to claim 8, wherein a plurality of openings are formed in the base layer.
17. 17. The method of manufacturing a display support plate according to claim 16, wherein the method of forming a plurality of the openings comprises the steps of: Coating a photoresist layer on the surface of the substrate layer; exposing and developing the photoresist layer according to a designed pattern, and forming an etching opening on the photoresist layer; Etching the substrate layer through the etching opening; And removing the residual photoresist.
18. 18. A display screen assembly comprising a display module and the display screen support plate of any one of claims 1 to 7 or prepared by the preparation method of any one of claims 8 to 17, the display module being mounted on the display screen support plate.
19. 19. An electronic device comprising a housing, a circuit board, and the display assembly of claim 18, wherein the display assembly and the housing define an accommodating space, and the circuit board is disposed in the accommodating space.

Description

Display screen supporting plate, manufacturing method thereof, display screen assembly and electronic equipment Technical Field The invention relates to the technical field of electronic equipment, in particular to a display screen supporting plate, a manufacturing method thereof, a display screen assembly and electronic equipment. Background The light and thin electronic equipment is a great trend of development, and how to reduce the weight of the electronic equipment is focused by scientific researchers. The support plate is a structure for supporting the display screen in the display screen assembly, and has certain rigidity requirement. The materials of the traditional display screen supporting plate are, for example, stainless steel, carbon fiber and composite materials thereof, etc., however, the stainless steel has a heavy weight, which is unfavorable for the weight reduction of electronic equipment, the carbon fiber and composite materials thereof have a light weight, but have a large thickness, and the carbon fiber has high price and is non-conductive, and an additional conductive coating is needed. Disclosure of Invention Based on the above, it is necessary to provide a display screen supporting plate, a manufacturing method thereof, a display screen assembly and an electronic device, so as to solve the problem that the display screen supporting plate is difficult to meet the requirements of important summation rigidity reduction. The first aspect of the invention provides a display screen supporting plate, which comprises the following steps: a display screen support plate having a base layer with oppositely disposed first and second support surfaces, at least one of the first and second support surfaces being provided with a stiffening layer; the matrix layer is a titanium alloy layer or an aluminum alloy layer, and the rigidity enhancing layer is a hard chromium layer, or The substrate layer is a titanium alloy layer, and the rigidity enhancing layer is a nitriding layer. The second aspect of the invention provides a preparation method of a display screen supporting plate, which comprises the following steps: A preparation method of a display screen supporting plate comprises the following steps: Providing a substrate layer, wherein the substrate layer is provided with a first supporting surface and a second supporting surface which are oppositely arranged; Forming a stiffening layer on at least one of the first support surface and the second support surface; the matrix layer is a titanium alloy layer or an aluminum alloy layer, and the rigidity enhancing layer is a hard chromium layer, or The substrate layer is a titanium alloy layer, and the rigidity enhancing layer is a nitriding layer. A third aspect of the present invention is to provide a display screen supporting plate prepared by the above-mentioned preparation method. A fourth aspect of the present invention provides a display assembly, including the display support plate, and further including a display module laminated with the display support plate. A fifth aspect of the present invention provides an electronic device, including a housing, a circuit board, and the display screen assembly, where the display screen assembly and the housing enclose an accommodating space, and the circuit board is disposed in the accommodating space. Compared with the traditional scheme, the display screen supporting plate, the preparation method thereof, the display screen assembly and the electronic equipment have the following beneficial effects: Above-mentioned display screen backup pad adopts titanium alloy layer or aluminum alloy layer as the matrix layer, titanium alloy and aluminum alloy have lower density to set up hard chromium layer at the first holding surface that the matrix layer set up relatively and at least one holding surface in the second holding surface, hard chromium layer can promote its elastic modulus by a wide margin, when titanium alloy layer was as the matrix layer, also can set up the nitriding layer at least one holding surface, utilized the high modulus of titanium nitride, promoted the rigidity of display screen backup pad by a wide margin under the unchangeable circumstances of thickness, compromise and reduce important summation rigidity requirement. The display screen assembly comprises the display screen supporting plate, so that the display screen assembly has corresponding technical characteristics and can obtain corresponding technical effects. The electronic equipment comprises the display screen assembly, so that the electronic equipment has corresponding technical characteristics and can obtain corresponding technical effects. Drawings Fig. 1 is a schematic structural view of a display screen supporting plate according to an example one of the present invention; FIG. 2 is a schematic view of a display support plate according to an exemplary second embodiment of the present invention; FIG. 3 is a schematic view s