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Manufacturing method for sapphire frame-free touch screen panel

A borderless, sapphire technology, applied in stone processing equipment, chemical instruments and methods, machine tools suitable for grinding workpiece edges, etc., can solve the problems of low yield and poor touch screen quality, and achieve high yield and uniformity. good, high productivity

Inactive Publication Date: 2015-12-23
赣州展威科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the touch screen of this invention still has the problems of poor quality and low yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of the sapphire borderless touch screen panel of this embodiment specifically includes the following steps:

[0033] Step 1. Crystal growth: Fill the crucible of the crystal growth furnace with pure Al 2 O 3 Raw material, the crucible is provided with a rotatable and liftable pull rod above the crucible, the lower end of the pull rod is clamped with a C crystal orientation seed crystal; the crystal growth furnace is evacuated and the protective gas is introduced, and the temperature is raised to 2200°C to make Al 2 O 3 Melt, control the liquid surface temperature of the melt to 2055℃, and place the seed crystal in Al 2 O 3 The upper surface of the melt is brought into contact with the melt for 1 hour; after the seed crystal is fully wetted with the melt, the seed crystal is lifted and rotated to achieve necking-expanding-equal diameter growth; the necking stage is controlled The liquid surface temperature of the melt is 2050℃, the seed crystal is pulle...

Embodiment 2

[0044] The preparation method of the sapphire borderless touch screen panel of this embodiment specifically includes the following steps:

[0045] Step 1. Crystal growth: Fill the crucible of the crystal growth furnace with pure Al 2 O 3 Raw material, the crucible is provided with a rotatable and liftable pull rod above the crucible, the lower end of the pull rod is clamped with a C crystal orientation seed crystal; the crystal growth furnace is evacuated and the protective gas is introduced, and the temperature is raised to 2100°C to make Al 2 O 3 Melt, control the liquid surface temperature of the melt to 2055℃, and place the seed crystal in Al 2 O 3 The upper surface of the melt is brought into contact with the melt for 0.5h; after the seed crystal is fully wetted with the melt, the seed crystal is lifted and rotated, so as to realize the necking-expanding-equal diameter growth; the necking stage, Control the liquid surface temperature of the melt to 2050℃, pull up the seed crys...

Embodiment 3

[0056] The preparation method of the sapphire borderless touch screen panel of this embodiment specifically includes the following steps:

[0057] Step 1. Crystal growth: Fill the crucible of the crystal growth furnace with pure Al 2 O 3 Raw materials, the crucible is provided with a rotatable and liftable pull rod above the crucible, and the lower end of the pull rod is clamped with a C crystal orientation seed crystal; the crystal growth furnace is evacuated and the protective gas is introduced, and the temperature is raised to 2150°C to make Al 2 O 3 Melt, control the liquid surface temperature of the melt to 2055℃, and place the seed crystal in Al 2 O 3 The upper surface of the melt is brought into contact with the melt for 1 hour; after the seed crystal is fully wetted with the melt, the seed crystal is lifted and rotated to achieve necking-expanding-equal diameter growth; the necking stage is controlled The liquid surface temperature of the melt is 2050℃, the seed crystal is ...

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Abstract

The invention relates to a manufacturing method for a sapphire frame-free touch screen panel. The method includes the specific steps of crystal growth, crystal squaring, crystal cutting, laser panel acquisition, grinding, edge chamfering, annealing, double-face polishing, oil ink printing, baking and the like. By the adoption of the manufacturing method for the sapphire frame-free touch screen panel, the panel forming quality is high, the rejection rate is low, and production efficiency is high.

Description

Technical field [0001] The invention relates to a preparation method of a sapphire sheet, in particular to a preparation method of a sapphire borderless touch screen panel, and belongs to the technical field of sapphire processing. Background technique [0002] In modern life, electronic products such as mobile phones and tablet computers have become indispensable electronic products for people, and large screens have become the development trend of electronic products such as mobile phones. This requires higher and higher strength and light transmittance of touch screen panels. . [0003] With the advancement of technology, touch screen panels made of sapphire have become more and more widely used. Sapphire has good thermal properties, excellent electrical and dielectric properties, can maintain high strength, excellent thermal properties and transmittance at high temperatures, and is resistant to chemical corrosion. The touch screen panel made of sapphire has high definition, g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D5/04B24B37/04B24B37/08B24B9/06B23K26/38B23K26/402C30B15/00C30B29/20
Inventor 苏凤坚刘俊郝正平
Owner 赣州展威科技有限公司
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