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A polishing device and polishing method for the curved surface of a mobile phone panel

A technology for panels and mobile phones, which is applied in the field of polishing devices for processing the arc surface of 2.5D or 3D sapphire mobile phone panels. It can solve the problems of increasing the difficulty of plane polishing, uneven force on the brush, and poor polishing effect, so as to improve plane polishing. Accuracy, avoiding unevenness of the brush, and reducing the difficulty of flat polishing

Active Publication Date: 2017-12-19
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its polishing effect is not good, and its stability is poor, mainly due to the uneven force of the brush and the curved surface itself, which leads to uneven force, which eventually leads to poor polishing effect
Especially for sapphire materials with high hardness, if there is no certain pressure, the polishing effect will be extremely poor
Moreover, using a brush to polish the four arc edges requires special devices and equipment
The clamping is complicated, the processing efficiency is low, and the plane precision may be damaged, which increases the difficulty of plane polishing

Method used

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  • A polishing device and polishing method for the curved surface of a mobile phone panel
  • A polishing device and polishing method for the curved surface of a mobile phone panel
  • A polishing device and polishing method for the curved surface of a mobile phone panel

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Experimental program
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Effect test

Embodiment 1

[0023] Arc surface polishing device: as attached Figure 1~3 As shown, in the present embodiment, a curved surface polishing device for mobile phone panels is provided, including a base body 1 and a ceramic disc 4 with a protective cover 5; the base body is provided with sinkers designed correspondingly according to the sample size of the mobile phone panel 2. An adsorption pad 3 fixedly connected to it for absorbing the panel of the mobile phone is set in the sinker; the protective cover is fixedly connected to the ceramic plate, and the protective cover is provided with a cavity 6 for placing the substrate . Those skilled in the art can easily understand that sinkers with different groove depths and / or surface dimensions can be designed according to different cell phone panel sample sizes. When using the curved surface polishing device of the present invention, the mobile phone panel sample is placed in the sink and the curved surface is exposed, and it is polished by a pol...

Embodiment 2

[0028] The arc surface polishing device and the method of using the arc surface polishing device in this embodiment are the same as those in Embodiment 1.

[0029] Choose SiO with a particle size of 80nm 2 The polishing liquid is polished by a SPEEDFAM four-head polishing machine with a 3D polishing pad: the processing parameters are, the polishing liquid ratio: 3L (polishing liquid): 6L (pure water); pressure: 0.32g / cm 2 ; Polishing liquid flow rate: 6L / min; Lower plate speed: 45rpm; Polishing time: 30min.

[0030] According to the process of this embodiment, the sapphire arc surface is processed, and the roughness of the arc surface reaches below 1.5nm. Using this processing technology, not only is there no damage to the plane, but it is also beneficial to the flatness and smoothness of the plane, reducing the difficulty of polishing the plane CMP, and the arc surface After polishing, the plane roughness reaches 0.5-0.8nm.

Embodiment 3

[0032] The arc surface polishing device and the method of using the arc surface polishing device in this embodiment are the same as those in Embodiment 1. In addition, the parameters during the polishing process were set as follows.

[0033] First grind:

[0034] Choose SiO with a particle size of 80nm 2 The polishing liquid is polished by a SPEEDFAM four-head polishing machine with a 3D polishing pad: the processing parameters are, the polishing liquid ratio: 5L (polishing liquid): 5L (pure water); pressure: 0.24g / cm 2 ;Polishing fluid flow rate: 6L / min; Lower plate speed: 45rpm; Polishing time: 60min;

[0035] After polishing, clean the machine table and brush the disc surface;

[0036] Second mill:

[0037] The polishing liquid of the first grinding is recycled, and the newly added polishing liquid 2L (polishing liquid): 2L (pure water), the material of the newly added polishing liquid is the same as that of the first grinding, and the product is polished. The polishin...

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Abstract

The invention provides a polishing device for the cambered surfaces of mobile phone panels, and more particularly relates to the polishing device for the cambered surfaces of 2.5D and 3D mobile phone panels. The polishing device comprises base bodies and a ceramic disk with a protective jacket. Each base body is provided with a countersunk groove used for placing the mobile phone panels, and absorption pads which are fixedly connected and used for absorbing the mobile phone panels are arranged in the countersunk grooves. The protective jacket is fixedly connected to the ceramic disk, and the protective jacket is provided with cavities used for placing the base bodies. The invention further provides a polishing method correspondingly. By means of the cambered surface polishing device, the problems that the polishing effect of the cambered surfaces is poor, the device is complex, clamping is difficult, and machining efficiency is low in the prior art can be solved, the plane polishing precision is further improved, and the plane polishing difficulty is lowered; the device is particularly suitable for the situation that the cambered surface is bad and thus reworking is needed.

Description

technical field [0001] The invention relates to a polishing device and a polishing method for the curved surface of a mobile phone panel, in particular to a polishing device and a polishing method for processing a 2.5D or 3D sapphire mobile phone panel curved surface. Background technique [0002] Artificial sapphire crystal (a-Al 2 o 3 ) are widely used as window materials because of their special physical, chemical and optical properties. As a window material, sapphire needs to be polished to obtain better optical and aesthetic effects. At present, the plane polishing of mobile phone panels is relatively mature, but compared with 2.5D or 3D mobile phone panels with curved surfaces, its curved surface polishing has always been a technical bottleneck. At present, brushes of different materials are mainly used to sweep and polish the curved surface of the mobile phone panel. For example, patent CN201320885994.0 provides a curved glass polishing device and patent CN20112034...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B29/02B24B41/06
CPCB24B29/02B24B41/06
Inventor 周群飞饶桥兵文彪
Owner LENS TECH
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