Back light holder for a mobile phone

• US 6,983,168 B2
• Filed: 03/23/2001
• Issued: 01/03/2006
• Est. Priority Date: 05/26/2000
• Status: Expired due to Fees

• Current Assignee: BenQ Corporation (Qisda Corporation)
• Original Assignee: BenQ Corporation (Qisda Corporation)
• Inventors: Chen, Wei-Chih, Sun, Chin-Kai
• Primary Examiner(s): Chin, Vivian
• Assistant Examiner(s): PHU, SANH D
• Application Number:
  US09/814,752
• Publication Number:
  US 20010046857A1
• Time in Patent Office: 1,747 Days
• Field of Search: 455/566, 455/550.1, 345/76, 345/87, 345/102, 337/361, 337/79, 337/206, 337/241, 337/242
• US Class Current: 455/550.1
• CPC Class Codes: H04M 1/0249 Details of the mechanical connection between the housing parts or relating to the method of assembly
• CPC Class Codes: H04M 1/0258 for a headset device
• CPC Class Codes: H04M 1/0266 for a display module assembly
• CPC Class Codes: H04M 1/22 Illumination; Arrangements for improving the visibility of characters on dials
• CPC Class Codes: H05K 1/141 One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters H05K1/142 and H05K1/147 take precedence

Abstract

The present invention relates to a mobile phone including a main printed circuit board. A first connector and a second connector are welded respectively onto a first predetermined location and a second predetermined location of the main printed circuit board, wherein a first power supply and a second power supply are provided respectively by the first connector and the second connector. The main printed circuit board includes a first portion corresponding to a keypad module and a second portion corresponding to an LCM module. The mobile phone also provides a holder, wherein a space is included in the holder to accommodate the LCM module. A slit is formed at a predetermined location of the holder. The mobile phone further includes a secondary printed circuit board carrying a plurality of LEDs to provide a back light source. The secondary printed circuit disposed within the aforementioned slit includes a first contact point and a second contact point. The first contact point contacts correspondingly with the first connector, and the second contact point contacts correspondingly with the second connector.

Claims

1. A mobile phone having a keypad module and an LCM module, comprising:

a main printed circuit board, a first connector and a second connector being welded respectively onto a first predetermined location and a second predetermined location on the main printed board, a first reference power supply and a second reference power supply being provided respectively to said first connector and said second connector, said main printed circuit board being divided into a first portion corresponding to said keypad module and a second portion corresponding to said LCM module;

a holder, said holder comprising a space accommodating said LCM module, said holder comprising a slit at a predetermined location of said holder;

a secondary printed circuit board for carrying a plurality of LEDs to provide a back light source, said secondary printed circuit board being disposed within said slit, said secondary printed circuit board comprising a first contact point and a second contact point, wherein said first contact point removably contacts with said first connector and said second contact point removably contacts with said second connector; and

an electro-luminescent sheet providing another back light source.

2. A mobile phone having a keypad module and an LCM module, comprising:

a main printed circuit board, a first connector and a second connector being welded respectively onto a first predetermined location and a second predetermined location on the main printed board, a first reference power supply and a second reference power supply being provided respectively to said first connector and said second connector, said main printed circuit board being divided into a first portion corresponding to said keypad module and a second portion corresponding to said LCM module;

a holder, said holder comprising a space accommodating said LCM module, said holder comprising a slit at a predetermined location of said holder;

a secondary printed circuit board for carrying a plurality of LEDs to provide a back light source, said secondary printed circuit board being disposed within said slit, said secondary printed circuit board comprising a first contact point and a second contact point, wherein said first contact point removably contacts with said first connector and said second contact point removably contacts with said second connector; and

an electro-luminescent sheet providing another back light source, wherein said electro-luminescent sheet primarily comprises a first portion and a second portion, wherein said first portion of said main printed circuit board is covered by said first portion of said electro-luminescent sheet, said second portion of said electro-luminescent is disposed within said space of said holder, and said LCM module is located and disposed over said second portion of said electro-luminescent sheet.

3. A method for assembling a holder onto a main printed circuit board of a mobile phone, said mobile phone comprising a keypad module, an LCM module, said holder, and a secondary printed circuit board, said main printed circuit board comprising a first portion corresponding to said keypad module and a second portion corresponding to said LCM module, a space being provided in said holder to accommodate said LCM module, a slit being formed at a predetermined location of said holder, said secondary printed circuit board carrying a plurality of LEDs to provide a back light source, said secondary printed circuit board comprising a first contact point and a second contact point, the method comprising the following steps:

(1) welding, by a surface mounting technology, a first connector and a second connector respectively onto a first predetermined location and a second predetermined location of said main printed circuit board;

(2) inserting said secondary printed circuit board within said slit of said holder;

(3) connecting said holder with said main printed circuit board in order to make said first contact point of said secondary printed circuit contact removably with said first connector, and to make said second contact point of said secondary printed circuit contact removably with said second connector;

(4) providing an electro-luminescent sheet substantially including a first portion and a second portion; and

(5) covering over said first portion of said main printed circuit board by said first portion of said electro-luminescent sheet, and disposing said second portion of said electro-luminescent sheet within said space of said holder.