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Mobile Phone Patent 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.
Mobile Phone Patent Claims
What is claimed is:
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.
Mobile Phone Patent Description
FIELD OF THE INVENTION
The present invention relates to a mobile phone structure and more
particularly to a mobile phone structure with a back light holder.
BACKGROUND OF THE INVENTION
Typically, back light sources of prior mobile phones include LED
and electro-luminescent lamp. The main printed circuit board of
the mobile phone mainly includes a first portion corresponding to
the keypad module and a second portion corresponding to the LCM
module. As known in the prior art, the back light source is used
to illuminate the LCM module or the keypad module. It enables users
clearly read alpha-numerical keypads in the keypad area or words
and patterns in the LCM area.
When using the LED as a back light source, a plurality of the LEDs
is welded onto the first portion of the main printed circuit board
to illuminate the keypad module. In order to illuminate the LCM
module, a holder is designed to include a space for accommodating
the LCM module, and a slit is formed at a predetermined location
for accommodating a secondary printed circuit board. The secondary
printed circuit board carries a plurality of the LEDs to provide
a back light source for illuminating the LCM module.
Generally speaking, the secondary printed circuit board is a lengthwise
sheet, and it forms a first lateral short leg and a second lateral
short leg at its two ends respectively. An electrode is disposed
on each lateral leg. In the mean time, a first contact point and
a second contact point are disposed on the main printed circuit
board corresponding to the aforementioned two lateral short legs.
The first contact point and the second contact point provide a first
reference power supply and a second reference power supply respectively.
After the secondary printed circuit board is disposed within the
slit, the first lateral short leg is to be welded onto the first
contact point and the second lateral short leg is to be welded onto
the second contact point. Therefore, the reference power supplies
may provide maximum LEDs.
However, the aforementioned processes of welding the first lateral
short leg of the secondary printed circuit board onto the first
contact point and welding the second lateral short leg onto the
second contact point are somewhat minute and complicated. Accordingly,
the cost of these processes is higher.
SUMMARY OF THE INVENTION
The present invention provides a structure of a mobile phone and
its manufacturing method. The welding process as known in the prior
art may be skip, and it lowers the manufacturing cost efficiently.
According to the present invention, both an electro-luminescent
sheet and an LED are provided in a mobile phone as back light sources.
Users may choose either the electro-luminescent sheet or the LED
as the back light source.
According to the present invention, the back light source may be
provided to the mobile phone by means of the electro-luminescent
sheet.
According to the present invention, the back light source may be
provided to the mobile phone by means of the LED.
The mobile phone of the present invention includes a main printed
circuit board, a holder, and a secondary printed circuit board.
Wherein a first connector and a second connector are welded respectively
onto a first predetermined location and a second predetermined location
on the main printed circuit board, 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 holder includes a space to accommodate
the LCM module, wherein a slit is formed at a predetermined location
of the holder. The secondary printed circuit board carries a plurality
of LEDs to provide a back light source, wherein the secondary printed
circuit board is disposed within the aforementioned slit, the secondary
printed circuit board includes a first contact point and a second
contact point, wherein the first contact point contacts correspondingly
with the first connector, and the second contact point contacts
correspondingly with the second connector.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 illustrates the mobile phone structure of the present invention.
FIG. 2 illustrates the structure of the main printed circuit board
11 as shown in FIG. 1.
FIG. 3 illustrates the structure of the holder 13 as shown in FIG.
1.
FIG. 4 illustrates the structure of the secondary printed circuit
board 15 as shown in FIG. 1.
FIG. 5 illustrates that the electro-luminescent sheet is provided
as the back light source for the mobile phone of the present invention.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
The present invention provides an improved mobile phone structure
and its manufacturing method to solve the problems existing in the
prior art.
An embodiment of the present invention, as shown in FIG. 1, includes
a main printed circuit board 11, a holder 13, and a secondary printed
circuit board 15.
The main printed circuit board includes a first connector 112 and
a second connector 110 welded respectively onto a first predetermined
location and a second predetermined location. A first reference
power supply and a second reference power supply are provided respectively
by the first connector 112 and the second connector 110. As shown
in FIG. 2, the main printed circuit board 11 is divided into a first
portion 114 corresponding to a keypad module (not shown) and a second
portion 116 corresponding to an LCM module 17. A flat cable assembly
19 is used to connect the LCM module 17 with one of the connectors
(not shown) on the main printed circuit board for transmitting the
signals between the LCM module 17 and the main printed circuit board
11.
As shown in FIG. 3, the holder 13 includes a space to accommodate
the LCM module 17, and a slit 30 is formed at a predetermined location
of the holder 13.
As shown in FIG. 4, the secondary printed circuit board is a lengthwise
sheet for carrying a plurality of LEDs 40 to provide a back light
source. The secondary printed circuit board 15 is disposed within
the aforementioned slit 30. The secondary printed circuit board
15 includes a first contact point 42 and a second contact point
44. As the assembling process is finished, the first contact point
42 contacts correspondingly with the first connector 112, and the
second contact point 44 contacts correspondingly with the second
connector 110.
According to a preferred embodiment, the first connector 112 and
the second connector 110 are welded onto the main printed circuit
board by means of a surface mounting technology (SMT).
According to the embodiment of the present invention, the assembling
method of the mobile phone structure is described hereinafter. (1)
As shown in FIG. 1, a first connector 112 and a second connector
110 are welded onto a first predetermined location and a second
predetermined location of the main printed circuit board 11 by means
of a surface mounting technology. (2) Insert the secondary printed
circuit board 15 within the slit 30 of the holder 13. (3) Connect
the holder 13 with the main printed circuit board 11 to make the
first contact point 42 of the secondary printed circuit board 15
contact correspondingly with the first connector 112, and to make
the second contact point 44 of the secondary printed circuit board
15 contact correspondingly with the second connector 110. After
connected with the main printed circuit board 11, the holder 13
is corresponding to the second portion 116 of the main printed circuit
board 11. A preferred embodiment of the connecting method is an
engagement connection.
After finishing the above procedure, dispose the corresponding
LCM module 17 within the space provided by the holder 13 in a proper
order. The rest of the steps of assembling the keypad module, the
upper and lower shells, and the batteries are the same as those
of the prior art. Therefore they are not further discussed here.
The back light source of the mobile phone which is completed herein
is provided by the LED.
The above description is based on the case that the LED is provided
as a back light source.
Based on the aforementioned main printed circuit board 11, the
electro-luminescent sheet may also be provided as a back light source
for the mobile phone structure. The corresponding assembling procedure
is described hereinafter. (1) Provide a main printed circuit board
11, wherein the main printed circuit board 11 may be as shown in
FIG. 1 or as known in the prior art. However, the main printed circuit
board as known in the prior art does not include a first connector
112 and a second connector 110. (2) Connect a holder 13 with the
main printed circuit board 11. A preferred embodiment of the connecting
method is an engagement connection. After connected with the main
printed circuit board 11, the holder 13 is corresponding to a second
portion 116 of the main printed circuit board 11. (3) Provide an
electro-luminescent sheet, primarily including a first portion 54
and a second portion 52. (4) Cover the first portion 54 of the electro-luminescent
sheet over the first portion 114 of the main printed circuit board.
Accommodate the second portion 52 within the space of the holder
13, as shown in FIG. 5.
After finishing the aforementioned procedure, cover the corresponding
LCM module 17 over the second portion 52 of the electro-luminescent
sheet in a proper order. The rest of the steps of assembling the
keypad module, the upper and lower shells, and the batteries are
the same as those of the prior art. Therefore they are not further
discussed here. The back light source of the mobile phone which
is completed herein is provided by the electro-luminescent sheet.
Based on the aforementioned main printed circuit board 11, the
electro-luminescent sheet and the LED may also be provided at the
same time as two kinds of back light sources. It is up to the user
to choose the electro-luminescent sheet or the LED as the back light
source. The corresponding assembling procedure is described hereinafter.
(1) Weld a first connector 112 and a second connector 110 onto a
first predetermined location and a second predetermined location
of the main printed board 11 by means of a surface mounting technology,
as shown in FIG. 1. (2) Insert the secondary printed circuit board
15 within the slit 30 of the holder 13. (3) Connect the holder 13
with the main printed circuit board 11 to make the first contact
point 42 of the secondary printed circuit board 15 contact correspondingly
with the first connector 112, and to make the second contact point
44 of the secondary printed circuit board 15 contact correspondingly
with the second connector 110. After connected with the main printed
circuit board 11, the holder 13 is corresponding to the second portion
116 of the main printed circuit board 11. A preferred embodiment
of the connecting method is an engagement connection. (4) Provide
an electro-luminescent sheet, primarily including a first portion
54 and a second portion 52. (5) Cover the first portion 54 of the
electro-luminescent sheet over the first portion 114 of the main
printed circuit board. Accommodate the second portion 52 within
the space of the holder 13.
After finishing the aforementioned procedure, cover the corresponding
LCM module 17 over the second portion 52 of the electro-luminescent
sheet in a proper order. The rest of the steps of assembling the
keypad module, the upper and lower shells, and the batteries are
the same as those of the prior art. Therefore they are not further
discussed here. The back light source of the mobile phone which
is completed herein is provided by either the electro-luminescent
sheet or the LED according to user's choice.
In order to let users choose the electro-luminescent sheet and
the LED as the back light source, an electronic circuit and the
associated firmware function are to be provided to the main printed
circuit board. The user enters the menu of the mobile phone and
chooses to use either the electro-luminescent sheet or the LED as
the back light source. However, it is not a key point of the present
invention, and therefore it is not further described herein.
The invention has been described herein in terms of several preferred
embodiments. Other embodiments of the invention will be apparent
to those skilled in the art from consideration of the specification
and practice of the invention. Furthermore, certain terminology
has been used for the purposes of descriptive clarity, and not to
limit the present invention. The embodiments and preferred features
described above should be considered exemplary, with the invention
being defined by the appended claims. |