Protective member and communication terminal device including same

A technology for protecting components and communication terminals, which is applied in telephone communications, branch equipment, and interference protection. Effects of Propagation Loss

Inactive Publication Date: 2021-12-17
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemically strengthened glass shown in Patent Document 1 contains alkali metals such as Na, K, and Li, so the dielectric loss tangent is high and the dielectric loss is large.
Therefore, it is difficult to improve radio wave penetration

Method used

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  • Protective member and communication terminal device including same
  • Protective member and communication terminal device including same
  • Protective member and communication terminal device including same

Examples

Experimental program
Comparison scheme
Effect test

no. 2 Embodiment approach

[0072] In addition, in the case of the protection member 100 of the above-mentioned first embodiment, the hole 11 penetrating the front and back of the first base material is formed in the first base material 10, and the second base material 20 is fitted into the hole 11, but the second base material 20 is 2. The form in which the base material 20 is attached to the first base material 10 is not limited to fitting with the holes 11 penetrating the front and back of the first base material.

[0073] Figure 8 It is a cross-sectional view of the protective member 100 in which the second base material 20 is fitted into the hole (recess) 17 formed in the first base material 10 and recessed in the thickness direction of the first base material. Figure 9 is a cross-sectional view of the protective member, showing the arrangement of the antenna ANT with respect to the protective member 100, in which the second base material 20 is embedded in the first base material 10 formed on the ...

no. 3 Embodiment approach

[0077] Figure 10A and Figure 10B It is a schematic front view of a modified example, showing another arrangement example in which the second base material 20 is arranged on the protective member. in addition, Figure 10A and Figure 10B The illustrated shape (aspect ratio, etc.) of the protective member 100 is schematically illustrated.

[0078] Such as Figure 10A As shown, for example, when the protection member 100 is provided on the side (front side) of the protected object 1 where the display portion is disposed, the second base material 20 may be disposed in the non-display area 5 avoiding the display portion 3 . The non-display region 5 is an opaque region in which a printed layer or the like is formed on the protective member 100 . By adding a printed layer or the like to the second base material 20 and arranging it in the non-display area 5 , the second base material 20 is intentionally arranged to be conspicuous.

[0079] Additionally, if Figure 10B As show...

no. 4 Embodiment approach

[0081] [Fourth Embodiment] (Height difference between the first base material and the second base material)

[0082] As above figure 2 As shown, in the case where the protective member 100 is provided to cover the display portion on the front side of the object 1 to be protected, the thickness between the outer surface 13B of the first base material 10 and the outer surface 23B of the second base material 20 is The height difference in the direction is preferably 10 μm or less, more preferably 3 μm or less, and still more preferably 1 μm or less. In order to reduce the level difference, the surface may be polished to be flat after bonding the first base material 10 and the second base material 20 .

[0083] In this way, the visibility of the display unit does not decrease. In addition, the height difference is small, and the tactility and operability of the touch panel are not impaired.

[0084] On the other hand, when the protection member 100 covers the back side of the ...

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Abstract

The present invention relates to a protective member and a communication terminal device including the same. The protective member (100) having a plate shape is characterized by including: a first base material (10) that is a chemically strengthened glass; and a second base material (20) formed of a material different from a material forming the first base material (10), in which with respect to values of relative permittivity and dielectric loss tangent at a frequency of 10 GHz of the first base material (10) and the second base material (20), the value of at least either one of the relative permittivity and the dielectric loss tangent of the second base material (20) is smaller than the value of the relative permittivity or the dielectric loss tangent of the first base material (10).

Description

technical field [0001] The present invention relates to a protection member and a communication terminal equipped with the protection member. Background technique [0002] The surface of communication terminal devices such as mobile phones and smartphones is covered with a plate-shaped protective member such as protective glass. As this protective member, for example, Patent Document 1 discloses a chemically strengthened glass having a surface residual stress of 300 MPa or more. [0003] Patent Document 1: International Publication No. 2017 / 126607 [0004] However, communications such as the fifth-generation mobile communication system (5G) use radio waves in a frequency band of several GHz to several tens of GHz. Therefore, as a protection member for communication terminal equipment using radio waves in a frequency band of, for example, 28 GHz, it is required to secure a protection function and further reduce propagation loss. However, the chemically strengthened glass d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/02C03C21/00
CPCH04M1/0202H04M1/026C03C21/002H01Q1/405H01Q1/243H01Q1/40H01Q1/38H01Q1/002H01Q3/44
Inventor 和田直哉尾关正雄
Owner AGC INC
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