Portable telephone with broadcast receiver

Abstract

A portable telephone with broadcast receiver realizing high sensitivity performance by interlocking with the screen display state both at the time of broadcast receiving and portable telephone communication, thereby attaining suitable antenna polarization characteristics. An antenna element (1) is mounted on a display section case (3) in such a manner that its helical axis direction is aligned with the longitudinal direction of a liquid crystal display section (2). The display section case (3) is connected to an upper case (5) rotatably through a rotary shaft (4). The upper case (5) is coupled to a lower case (7) to be opened / closed freely through a hinge part (6). Main polarization direction of the antenna element (1) is varied depending on the rotational state of the liquid crystal display section (2) where its screen becomes long laterally or longitudinally, thus ensuring antenna polarization characteristics suitable for both at the time of broadcast reception and portable telephone communication.

Description

technical field [0001] The present invention relates to a display unit and an antenna of a mobile phone having a broadcast receiver. Background technique [0002] Portable television receivers, including relatively large devices as well as small, pocket-sized devices, have been widely used in the past. If this TV receiving function is equipped in a portable phone that many users carry on a daily basis, it is not necessary to carry both the portable phone and the portable TV receiver at the same time, thereby greatly facilitating the user. [0003] One of the technical problems to be solved when equipping a mobile phone with a television receiving function is the method of constructing a receiving antenna for a UHF band having a relatively long wavelength of about 64 cm to 44 cm. In mobile phone communication, frequencies above the 800 MHz band with a wavelength of about 37 cm or less are used, and the main polarization of electric waves is vertical polarization, while the m...

AI Technical Summary

Problems solved by technology

[0008] However, in the conventional antenna described in Patent Document 1, there is a problem that the sensitivity to horizontally polarized radio waves cannot be improved because the main polarization is vertical polarization.

[0009] In addition, the conventional antenna described in Patent Document 2 has the problem that although it has the function of switching the main polarization, it does not take into account the common use of the mobile phone antenna and the TV broadcast receiving antenna.

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