Patent ID: 9578766
Date: 2017-02-21
CPC Classifications: H04B,H04M,H05K,Y10T

Claim:
1. A display terminal comprising: a first body having a front surface and a back surface; a second body coupled to the first body via a joint, the second body being configured to substantially reach the back surface of the first body when the second body is opened; and, a Hall sensor disposed in the first body, the Hall sensor comprising a magnetic field sensing surface and being configured to directly sense a magnetic field generated by a magnet disposed in the second body, wherein the magnetic field substantially vertically passes the magnetic field sensing surface of the Hall sensor; wherein the magnetic field sensing surface is disposed at a slope with respect to the front surface of the first body; wherein an angle of opening between the second body and the front surface of the first body ranges between approximately 0 degree and approximately 360 degrees; wherein the Hall sensor comprises a Hall element disposed on a semiconductor substrate; wherein the Hall element is configured to sense a first magnetic field in response to the second body covering the front surface of the first body, and a second magnetic field in response to the second body reaching the back surface of the first body; and wherein a direction of the first sensed magnetic field is substantially opposite to a direction of the second sensed magnetic field.