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Mobile phone backboard and mobile phone containing same

A mobile phone and backplane technology, applied in the field of high-strength, high-fracture-toughness lithium disilicate glass-ceramic and its use as a backplane glass, can solve the problems of broken screen, no mention of glass strength and fracture toughness, etc. The effect of improving fracture toughness, excellent light transmittance, and reducing the probability of broken screen

Active Publication Date: 2019-07-12
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the main problem facing the panel glass and back panel glass of mobile phones is the problem of "broken screen", which needs to be solved by improving the strength and toughness of the glass. CN105601116A only improves the hardness of the glass, and does not mention the strength and fracture toughness of the glass , so the "broken screen" issue cannot be resolved

Method used

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  • Mobile phone backboard and mobile phone containing same
  • Mobile phone backboard and mobile phone containing same
  • Mobile phone backboard and mobile phone containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0073] A lithium disilicate glass-ceramic plate, the preparation method comprising the steps of:

[0074] (1) According to the amount of each component listed in Table 1, take analytically pure SiO 2 , Li 2 CO 3 、K 2 CO 3 、Al 2 o 3 、TiO 2 and CeO 2 , after fully mixing and grinding with a planetary ball mill, take it out and dry it; put the powder obtained after drying in a platinum alloy crucible, put it in a box-type resistance furnace, raise the temperature to 1550°C in an air atmosphere, keep the temperature for 3 hours, and then Take out and cast the basic glass plate at 1400°C; the weight of the basic glass sheet obtained by casting is about 80 grams;

[0075] (2) After heat-treating the basic glass plate obtained in step (1) at 750° C. to 1000° C. for 1 min to 60 min, a single crystal phase of lithium disilicate is precipitated to obtain lithium disilicate glass-ceramics.

[0076] Table 1 has provided the formula and process condition of the basic glass that em...

Embodiment 6～8

[0085] The difference with embodiment 5 is only that a heat treatment temperature and time are different:

Embodiment 6

[0086] Embodiment 6: the primary heat treatment temperature is 760°C, and the time is 20min;

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Abstract

The invention relates to a mobile phone backboard. The mobile phone backboard is lithium disilicate glass ceramics. As the mobile phone backboard adopts the lithium disilicate glass ceramics, strengthand fracture toughness higher than those of common glass are obtained, cracks of a mobile phone under the condition of impact by external force can be prevented, and generated cracks are prevented from being further expanded.

Description

technical field [0001] The invention belongs to the field of display technology, and relates to lithium disilicate glass-ceramics and its preparation method and application, in particular to lithium disilicate glass-ceramics with high strength and high fracture toughness and its application as back glass. Background technique [0002] Electronic devices with touch screens, such as LCD TVs and smart phones, have become more and more popular in people's daily life, and glass is one of the indispensable components in these electronic devices. Taking a smart phone as an example, the front of the phone is panel glass, which is used to protect the touch screen of the phone. In recent years, in order to meet the needs of future 5G communication and wireless charging technology, reduce the electromagnetic shielding effect produced by traditional metal backplanes, and for the sake of aesthetics, the use of glass materials as mobile phone backplanes has gradually been taken into consi...

Claims

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Application Information

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IPC IPC(8): C03C10/04H04M1/02
CPCC03C10/00H04M1/026
Inventor 彭练朱庆山
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI