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Laser polishing method of mobile phone display screen glass

A technology of laser polishing and display screen, which is applied in the field of laser polishing of mobile phone display glass, which can solve the problems of high utilization rate consumption, high cost of polishing liquid, and difficulty in improving yield rate, so as to improve yield rate, shorten production cycle, and reduce cost. low effect

Inactive Publication Date: 2019-03-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Although the chemical mechanical polishing method can obtain glass substrates that meet the requirements, there are still many problems. For example, there are mechanical scratches on the surface of the polished glass and concave and convex points of incoming materials, and the yield rate is difficult to improve; the cost of polishing liquid is high, and the utilization rate is large. Moreover, the polishing liquid will pollute the environment; polishing is time-consuming and inefficient.

Method used

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  • Laser polishing method of mobile phone display screen glass

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Effect test

Embodiment 1

[0018] A laser polishing method for mobile phone display glass, comprising the following steps:

[0019] 1) Polishing light source setting: choose continuous CO 2 Laser light source, and use the beam shaping system to shape the Gaussian beam into a flat-topped beam with flat beam and uniform energy distribution;

[0020] 2) Preheating of mobile phone display glass: Place the clean mobile phone display glass to be polished on a uniformly heated preheating platform for preheating. The polished mobile phone screen glass is Corning Gorrilla glass, and the strain point of the glass is 571°C. The annealing temperature is 623°C, and the preheating platform is set at 500°C according to the polishing requirements;

[0021] 3) Polishing path planning and setting of other parameters: The polishing path of the polished mobile phone screen glass is selected as a plane with unidirectional action and round-trip scanning, according to the used CO 2 The energy of the laser is 100W, the diame...

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Abstract

The invention discloses a laser polishing method of mobile phone display screen glass. According to the method, laser is adopted for polishing the mobile phone display screen glass, a beam shaping step is used for optimizing a laser source, a pre-heating step is used for solving the problem that the mobile phone display screen glass is fragile under thermal action, and non-contact nondestructive high-quality efficient polishing is conducted on the mobile phone display screen glass. The efficient economic novel method is provided for processing for obtaining the nondestructive smooth mobile phone display screen glass.

Description

technical field [0001] The invention relates to the polishing of mobile phone display glass, in particular to a laser polishing method for mobile phone display glass Background technique [0002] Many characteristics in mobile phone display screens, such as resolution and light transmittance, are related to glass substrates, which are important components in mobile phone display screens. With the rapid development of smart phone devices, there is a large demand for mobile phone display glass, such as two glass substrates for each LED display, and one glass substrate for OLED displays. In 2015, 2.57 OLEDs were produced a year. It is predicted that the annual production of OLEDs will reach 700 million pieces by 2020. Mobile phone display glass is a typical difficult-to-process material with low density, high elastic modulus, and low thermal conductivity. At present, the commonly used polishing technology for mobile phone display glass processing is chemical mechanical polish...

Claims

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Application Information

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IPC IPC(8): C03C23/00
CPCC03C23/0025
Inventor 邵建达贺婷魏朝阳蒋志刚路晴
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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