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Curved glass panel for mobile phone and forming method thereof

A technology of curved glass and curved panels, which is applied in glass forming, glass reshaping, glass production, etc. It can solve problems such as glass sticking to the mold, and achieve the effects of easy demoulding, high physical stability at high temperature, and improved stability

Active Publication Date: 2017-04-12
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Another object of the present invention is to overcome the deficiencies of the prior art and provide a mobile phone curved glass panel molding method with simple process, convenient operation and high yield, so as to overcome the problem of glass sticking to molds in the glass thermoforming process of the prior art , effectively improve production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This embodiment prepares a one-way curved 3D mobile phone glass panel:

[0049] Bending direction (X or Y direction):

[0050] Bending arc: X-direction: bending arc radius R=340mm, bending height: X-direction: height T=2.61mm, 1. Glass model: CORNING-2317 flat glass, softening temperature T=755°C.

[0051] 2. Mold preparation

[0052] Using grade: TTK-8, graphite with an average particle size of 2 μm as raw materials, to make dies and punches, the radians of the inner cavity of the dies and punches are consistent with the curved radians of the designed curved glass panel; the density of the prepared mold is 1.75 g / cm3, the Shore hardness is 75, the flexural strength is 80Mpa, the surface roughness of the concave mold and the inner cavity of the punch mold: below Ra0.08, to achieve the mirror effect;

[0053] 3. Forming of curved glass panels

[0054] Place CORNING-2318 flat glass between the graphite concave mold and the convex mold, apply a pressure of 80 g / cm2 on t...

Embodiment 2

[0062] This embodiment prepares a two-way curved 3D mobile phone glass panel:

[0063] The direction of bending (the X direction and the Y direction bend toward the Z axis at the same time);

[0064] Bending arc: X direction: bending arc radius R=140mm, Y direction: bending arc radius R=3000mm; bending height: X direction: height T=5.0mm, Y direction: T=0.5mm;

[0065] 1. Glass model: CORNING-2318 flat glass 2318, softening temperature T=768°C.

[0066] 2. Mold preparation

[0067] Using grade: TTK-8, graphite with an average particle size of 1.8 μm as raw materials, to make dies and punches, the radians of the inner cavity of the dies and punches are consistent with the curved radians of the designed curved glass panel; the prepared mold has a density of 1.80g / cm3, the Shore hardness is 80, the flexural strength is 83Mpa, the surface roughness of the concave mold and the inner cavity of the punch mold: below Ra5nm, to achieve the mirror effect;

[0068] 3. Forming of curve...

Embodiment 3

[0077] This embodiment prepares a 3D mobile phone glass panel with two sides curved:

[0078] Bending direction X: Take the distance from the outermost edge of the glass to the center of 15 as the bending centerline;

[0079] Bending arc: X direction: bending arc radius R=15mm, bending height: Z direction: height T=2.30mm,

[0080] 1. Glass model: CORNING-2320 flat glass 2320, softening temperature = 789°C.

[0081] 2. Mold preparation

[0082] Using grade: TTK-8, graphite with an average particle size of 1.9 μm as raw materials, to make a die and a punch, the radian of the cavity of the die and the punch is consistent with the curved radian of the designed curved glass panel; the density of the prepared mold is 1.78g / cm3, the Shore hardness is 78, the flexural strength is 81Mpa, the surface roughness of the concave mold and the inner cavity of the punch mold: below Ra5.0nm, to achieve the mirror effect;

[0083] 3. Forming of curved glass panels

[0084] Place CORNING-231...

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Abstract

The invention discloses a mobile phone curved glass panel and a preparation method thereof. The curved glass panel body takes the X-axis or Y-axis center line of the mobile phone panel body as the center and curves to the same side in an arc shape or takes the center line of the mobile phone panel body as an arc. The center point is the center and the periphery is curved in an arc to the same side; or, the curved glass panel of the mobile phone includes a main panel and a curved panel, and the curved panel is formed by bending at least one side of the main panel, and a plurality of the The curved panel is bent to the same side relative to the main panel. The molding method includes three steps: preparation of flat glass panels, manufacture of graphite molds, and molding of curved glass panels. The invention utilizes the good lubricating properties of graphite, and by applying a certain deformation pressure, realizes thermal deformation at a temperature below the softening point of glass, and the product has high dimensional accuracy, meets the design requirements of 3D mobile phone glass panels, and can realize large-scale industrial production and reduce production costs. , to meet people's demand for personalized and fashionable mobile phones.

Description

technical field [0001] The invention discloses a mobile phone curved glass panel and a forming method thereof, belonging to the technical field of mobile phone panel preparation. Background technique [0002] Mobile phones with curved glass panels are generally called 3D mobile phones in the industry, and the curved glass panels of mobile phones are called 3D glass panels. [0003] Traditional mobile phone panels are usually made of flat glass, but this single style cannot meet people's pursuit of fashion and personalization today. Due to the curved shape of the human body, the mobile phone cannot be in close contact with the human body when it is carried around. The human body fits tightly, making the human body very uncomfortable. In addition, the earpiece and microphone of the tablet phone are placed at both ends of the phone. When answering the call, the earpiece end is close to the ear, and the microphone end is close to the mouth. However, because the panel of the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/02C03B23/03
CPCY02P40/57
Inventor 周群飞饶桥兵汤金慧
Owner LENS TECH
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