Electronic device cover glass blank, method for manufacturing same, electronic device cover glass, and method for manufacturing same

A technology for cover glass and electronic equipment, which is applied in glass pressing, manufacturing tools, glass production, etc., and can solve problems such as affecting manufacturing costs and increasing trauma.

Inactive Publication Date: 2014-07-23
HOYA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the number of steps increases, the manufacturing cost will also be affected, and the occur

Method used

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  • Electronic device cover glass blank, method for manufacturing same, electronic device cover glass, and method for manufacturing same
  • Electronic device cover glass blank, method for manufacturing same, electronic device cover glass, and method for manufacturing same
  • Electronic device cover glass blank, method for manufacturing same, electronic device cover glass, and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

no. 2 approach

[0219] The cover glass blank for electronic devices according to this embodiment has a pair of opposing main surfaces, an end surface existing between the pair of main surfaces, and at least one of the main surfaces of the pair of main surfaces and the above-mentioned The cover-glass blank for electronic devices of the interposed surface between the end surfaces is characterized in that both the pair of main surfaces and the interposed surface are press-molded surfaces formed by direct punching.

[0220] Figure 8 It is a figure which shows one Embodiment of the cover-glass blank for electronic devices used as the base material of the cover glass for electronic devices which concerns on this embodiment, (a) is an overall perspective view, and (b) is a side cross-sectional view.

[0221] Such as Figure 8 As shown, the cover-glass blank G for electronic devices which concerns on one Embodiment of this invention has a pair of opposing main surfaces 1A, 1B, the end surface 1D wh...

no. 3 approach

[0268] The cover glass for electronic devices which concerns on this embodiment is attached to the display screen of a mobile phone as a cover glass for portable devices, for example.

[0269] Figure 18 It is an overall perspective view showing an example of a portable device, and shows a case of a mobile phone 100 mainly operated on a touch panel as an example of a portable device. This mobile phone 100 includes a case portion 101 and a display screen 102 on the upper surface side, and a cover glass is provided on the display screen 102 .

[0270] Figure 19 (a)-(d) is a plan view which shows the example of the external shape of the cover glass for portable devices which is a cover glass for electronic devices which concerns on this embodiment, respectively.

[0271] Should Figure 19 (a) to (d) all represent examples in which the outer shape of the cover glass is rectangular, Figure 19 (a) shows an example of a simple rectangular cover glass 200A, Figure 19 (b), Fi...

Embodiment 1

[0332] In this example, the cover glass blank of this example is produced through the following press molding process, and then the glass base material is formed from the cover glass blank, and the glass base material is chemically strengthened to manufacture a portable device The glass base material used for the cover glass.

[0333] [Press forming process]

[0334] As a glass composition, prepare to contain SiO 2 : 62.5 to 64.5% by weight, Al 2 o 3 : 13 to 15% by weight, Li 2 O: 5 to 7% by weight, Na 2 O: 9.5 to 11.5% by weight, ZrO 2 : 5 to 7% by weight of molten glass material, by using the above image 3 , Figure 4 method of the device, made with the above-mentioned figure 1 The three-dimensional shape of the cover glass blank is shown.

[0335] Wherein, the temperature of the molten glass material flowing out from the molten glass outlet is 1300°C, and the viscosity is 10 3 Adjustment is performed in a manner below dPa·s. In addition, the surface roughness of...

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Abstract

An electronic device cover glass blank (G) to be used as a substrate of an electronic device cover glass includes a pair of main surfaces (1A, 1B), and end surfaces that adjoin the pair of main surfaces (1A, 1B). The main surfaces are shaped so as to be asymmetric to each other in the thickness direction. The main surfaces (1A, 1B) are press-molded surfaces formed by direct pressing. A method for manufacturing the cover glass blank includes a molding step in which a pair of dies is used for press molding a mass of molten glass supplied from a molten glass supplying unit. The pressing surface of at least one of the pair of dies has a shape for forming the main surfaces and an interposed surface.

Description

technical field [0001] The present invention relates to a substrate including a cover that becomes a display screen of a portable device such as a mobile phone, a portable game machine, a PDA (Personal Digital Assistant), a digital camera, a video camera, or a tablet PC (Personal Computer). Cover glass blank for portable devices (cover glass blank) of material, cover glass blank for touch sensors used as base material of cover of touch sensor, cover glass blank for electronic devices, manufacturing method thereof, and cover for electronic devices Plate glass and method for its manufacture. Background technique [0002] Conventionally, in portable devices such as mobile phones and PDAs, in order to prevent impact and external force on the display screen, a protective plate (cover member) made of resin is arranged at a certain interval outside the display screen. A protective plate made of high acrylic resin (for example, Patent Document 1). [0003] However, since the prote...

Claims

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Application Information

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IPC IPC(8): C03B11/00C03C21/00
CPCC03B11/08C03B7/14C03B11/02C03B11/082C03B2215/70Y02P40/57
Inventor 桥本和明矶野英树村上明
Owner HOYA CORP
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