Title of Invention

TOUCH KEY ASSEMBLY FOR A MOBILE TERMINAL

Abstract A touch key assembly is structured to operate with a cover having at least one touch key, which is defined by an optically transmissive region of the cover. A touch pad is coupled to the cover and is shaped to define at least one aperture which forms a light guide that is associated with the touch key. A light source is positioned relative to the bottom side of the touch pad, and is further positioned relative to the light guide to provide light to the touch key. The assembly may also include an optical waveguide positioned relative to the bottom side of the touch pad, the optical waveguide being structured to transmit light. A reflection element operatively associated with the bottom side of the optical waveguide may be used to enhance refection of the light. The touch key assembly may be implemented in a portable electronic device, such as a mobile terminal or a personal digital assistant (PDA).
Full Text TOUCH KEY ASSEMBLY FOR A MOBILE TERMINAL
(i) BACKGROUND OF THE INVENTION
Field of the Invention
[001] The present invention relates to a mobile terminal, and more
particularly to a touch key assembly structured to include a light source
for lighting touch keys.
a) Discussion of the Related
Art
[002] A mobile terminal is one type of portable electronic device capable of
wireless communication in a mobile environment. Common mobile
terminals include mobile phones, personal digital assistants (PDSs),
and the like. Consumers have demanded mobile terminals with
increasingly thinner dimensions. In many cases, thinner mobile
terminals are more convenient to carry.
[003] A typical mobile terminal includes a keypad having key buttons for
inputting numbers, letters, and other control commands. An example
of a typical keypad of a conventional mobile terminal is shown in FIG.
1, which is a cross-sectional view of a portion of a keypad commonly
found in a conventional mobile terminal.
[004] As shown in this figure, keypad 10 includes key buttons 12 exposed to
receive contact by a user pressing downward on the buttons. Dome
switches 16 are arranged below key buttons 12 and are mounted on an
upper surface of circuit board 14. The key buttons are configured to
produce signals responsive to user manipulation. Pad 13 is shown
attached to a lower surface of key buttons 12, and elastically transforms
upon pressing of the key buttons. One purpose of the pad is to assist in
the pressurizing of dome switches 16.
[005] Key buttons 12 are shown exposed to the outside of terminal case 11,
and typically include characters, numerals, letters, and the like on an
upper surface of the button. The buttons are structured to transmit light
generated by light emitting diodes (LEDs) 15.
[006] Pad 13 is shown having push protrusions 17, which also assist in
pressurizing dome switches 16 upon pressing of key buttons 12. LEDs
15 are often implemented for illuminating the key buttons. The LEDs
provide light to the key buttons, which is useful when the mobile
terminal is used in a dimly lit environment.
[007] As FIG. 1 illustrates, LEDs 15 protrude from an upper surface of
circuit board 14. The LEDs consume significant amounts of space
such that they are positioned within a gap formed between pad 13 and
circuit board 14. A drawback of this arrangement is that the gap
necessarily increases the thickness of the mobile terminal. Another
disadvantage is that the dome switches block significant portions of
light emitted by the LEDs. As a result, the number of LEDs required
to light the various key buttons is often increased so that each key
button is sufficiently illuminated. Increasing the number of LEDs
consequently results in an undesirable increase in the power
requirements of the mobile terminal.
(ii) SUMMARY OF THE INVENTION
[008] Features and advantages of the invention will be set forth in the
description which follows, and in part will be apparent from the
description, or may be learned by practice of the invention. The
objectives and other advantages of the invention will be realized and
attained by the structure particularly pointed out in the written
description, and claims hereof, as well as the appended drawings.
[009] In accordance with an embodiment, a touch key assembly is structured
to operate with a cover having at least one touch key, which is defined
by an optically transmissive region of the cover. A touch pad is
coupled to the cover and is shaped to define at least one aperture which
forms a light guide that is associated with the touch key. A light
source is positioned relative to the bottom side of the touch pad, and is
further positioned relative to the light guide to provide light to the
touch key. The assembly may also include an optical waveguide
positioned relative to the bottom side of the touch pad, the optical
waveguide being structured to transmit light. A reflection element
operatively associated with the bottom side of the optical waveguide
may be used to enhance refection of the light.
[0010] In one feature, a separate recess is associated with each light source,
the recesses being formed in a top surface of the optical waveguide and
sized to receive at least a portion of an associated light source.
[0011] In another feature, a light disturbing element associated with the light
guide is formed in the optical waveguide.

[0012] In yet another feature, the cover includes a plurality of touch keys
which are each defined by an optically transmissive region, and the one
or more light sources are positioned relative to the light guide to
provide light to the touch keys.
[0013] In accordance with another feature, each of the light guides include
optically transmissive material.
[0014] In accordance with yet another feature, a printed circuit board (PCB) is
used to control the touch pad.
[0015] In one feature, the touch pad is one of a capacitance touch pad or a
pressure-sensitive touch pad. Alternatively, the touch pad is shaped to
define an aperture which forms the light guide.
[0016] In accordance with an alternative embodiment, a mobile terminal
includes a housing containing a display, and a touch key assembly
associated with the housing. The touch key assembly is structured to
operate with a cover having at least one touch key, which is defined by
an optically transmissive region of the cover. A touch pad is coupled
to the cover and is shaped to define at least one aperture which forms a
light guide that is associated with the touch key. A light source is
positioned relative to the bottom side of the touch pad, and is further
positioned relative to the light guide to provide light to the touch key.
The assembly may also include an optical waveguide positioned
relative to the bottom side of the touch pad, the optical waveguide
being structured to transmit light. A reflection element operatively
associated with the bottom side of the optical waveguide may be used
to enhance reflection of the light.


TOUCH KEY ASSEMBLY FOR A MOBILE TERMINAL
(i) BACKGROUND OF THE INVENTION
Field of the Invention
[001] The present invention relates to a mobile terminal, and more
particularly to a touch key assembly structured to include a light source
for lighting touch keys.
a) Discussion of the Related
Art
[002] A mobile terminal is one type of portable electronic device capable of
wireless communication in a mobile environment. Common mobile
terminals include mobile phones, personal digital assistants (PDSs),
and the like. Consumers have demanded mobile terminals with
increasingly thinner dimensions. In many cases, thinner mobile
terminals are more convenient to carry.
[003] A typical mobile terminal includes a keypad having key buttons for
inputting numbers, letters, and other control commands. An example
of a typical keypad of a conventional mobile terminal is shown in FIG.
1, which is a cross-sectional view of a portion of a keypad commonly
found in a conventional mobile terminal.
[004] As shown in this figure, keypad 10 includes key buttons 12 exposed to
receive contact by a user pressing downward on the buttons. Dome
switches 16 are arranged below key buttons 12 and are mounted on an
upper surface of circuit board 14. The key buttons are configured to


produce signals responsive to user manipulation. Pad 13 is shown
attached to a lower surface of key buttons 12, and elastically transforms
upon pressing of the key buttons. One purpose of the pad is to assist in
the pressurizing of dome switches 16.
[005] Key buttons 12 are shown exposed to the outside of terminal case 11,
and typically include characters, numerals, letters, and the like on an
upper surface of the button. The buttons are structured to transmit light
generated by light emitting diodes (LEDs) 15.
[006] Pad 13 is shown having push protrusions 17, which also assist in
pressurizing dome switches 16 upon pressing of key buttons 12. LEDs
15 are often implemented for illuminating the key buttons. The LEDs
provide light to the key buttons, which is useful when the mobile
terminal is used in a dimly lit environment.
[007] As FIG. 1 illustrates, LEDs 15 protrude from an upper surface of
circuit board 14. The LEDs consume significant amounts of space
such that they are positioned within a gap formed between pad 13 and
circuit board 14. A drawback of this arrangement is that the gap
necessarily increases the thickness of the mobile terminal. Another
disadvantage is that the dome switches block significant portions of
light emitted by the LEDs. As a result, the number of LEDs required
to light the various key buttons is often increased so that each key
button is sufficiently illuminated. Increasing the number of LEDs
consequently results in an undesirable increase in the power
requirements of the mobile terminal.


[0017] In one feature, the housing includes a first body and a second body,
such that the first body is structured to slideably engage the second
body. The display and touch key assembly are coupled to the first
body, and the mobile terminal further includes a key pad coupled to the
second body. Alternatively, the display is coupled to the first body, the
touch key assembly is coupled to the second body, and the mobile
terminal further includes a key pad coupled to the first element.
[0018] In another feature, the touch key assembly is integrated with the
housing.
[0019] In yet another feature, the display is positioned at an upper portion of
the housing and the touch key assembly is positioned at a lower portion
of the housing, the touch key assembly being centered at about a
medial plane of the housing.
[0020] In accordance with yet another embodiment, a method of making a
touch key assembly includes forming a light guide in a touch pad,
positioning at least one light source relative to a bottom side of the
touch pad, and positioning the light source relative to the light guide to
provide light to the light guide.
[0021] In accordance with one aspect, the method further includes positioning
an optical waveguide relative to the bottom side of the touch pad, or
positioning a reflection element relative to a bottom side of the optical
waveguide.
[0022] These and other embodiments will also become readily apparent to
those skilled in the art from the following detailed description of the


embodiments having reference to the attached figures, the invention
not being limited to any particular embodiment disclosed.
(iii) BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
[0023] The accompanying drawings, which are included to provide a further
understanding of the invention and are incorporated in and constitute a
part of this specification, illustrate embodiments of the invention and
together with the description serve to explain the principles of the
invention. Features, elements, and aspects of the invention that are
referenced by the same numerals in different figures represent the
same, equivalent, or similar features, elements, or aspects in
accordance with one or more embodiments. In the drawings:
[0024] FIG. 1 is a cross-sectional view of a portion of a keypad commonly
found in a conventional mobile terminal;
[0025] FIG. 2 is a perspective view of a mobile terminal according to an
embodiment of the present invention;
[0026] FIG. 3 is perspective view showing relevant portions of a disassembled
touch key assembly;
[0027] FIG. 4 is a cross-sectional view showing relevant portions of an
assembled touch key assembly;
[0028] FIG. 5 is a bottom view of a touch pad utilized in the touch key
assembly of FIG. 4;
[0029] FIG. 6 is a perspective view of a slide-type mobile terminal according
to an alternative embodiment of the present invention;


[0030] FIG. 7 is a perspective view of a slide-type mobile terminal according
to yet another alternative embodiment of the present invention; and
[0031] FIG. 8 is a flowchart showing a method of making a touch key
assembly according to an embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0032] Reference will now be made in detail to the preferred embodiments of
the present invention, examples of which are illustrated in the
accompanying drawings. Wherever possible, the same reference
numbers will be used throughout the drawings to refer to the same or
similar parts.
[0033] FIG. 2 is a perspective view of a mobile terminal according to an
embodiment of the present invention. As shown, mobile terminal 100
includes body 110, which has display 112, speaker 113, and touch key
assembly 130 formed on an upper side of the body. Body 110 is
further defined by first body 110a and second body 110b. The touch
key assembly is located at one end of the first body, below the display.
The touch key assembly may be used to receive input from a user, and
thus may include one or more touch keys (described in more detail in
later figures). In an embodiment, various touch keys of touch key
assembly 130 may be configured to cooperate with items presented on
display 112.
[0034] FIG. 3 is perspective view showing relevant portions of disassembled
touch key assembly 130. FIG. 4 is a sectional view showing relevant


portions of an assembled touch key assembly. FIG. 5 is a bottom view
of touch pad 140. Various embodiments of the present invention will
now be described with reference to FIG. 3-5.
[0035] Touch key assembly 130 is shown with touch pad 140 operatively
coupled to first body 110a, which may implemented as a cover.
Assembly 130 may further include optional components such as optical
waveguide 150, reflection element 160, or both components. Light
sources 145 are shown positioned relative to the bottom side of touch
pad 140. If desired, the light sources may be directly coupled to the
touch pad. The various components of assembly 130 are shown
positioned over a printed circuit board (PCB) 170. The PCB is shown
located within second body 110b, but such positioning is not a
requirement.
[0036] In an embodiment, some or all of first body 110a may be formed from
a transparent or semitransparent material. It is desirable for such
material to be sufficiently rigid to serve has a housing for mobile
terminal 100, for example. Touch keys 131 may be configured such
that they are each defined by an optically transmissive region
surrounded by regions which do not transmit light. The touch keys
may be integrated with first body 110a (e.g., the cover), or these
elements may be discrete components.
[0037] One technique for forming touch keys 131 is to introduce an opaque
material, such as ink, over certain portions of the first housing. Touch
keys 131 may be defined as areas of the first body which do not include
the opaque materials. Incident light will be transmitted by optically


transmissive regions of the first body, and will not be transmitted by
the portions of the first body which include the opaque material.
Various types, shapes, and numbers of touch keys may therefore be
formed using this technique.
[0038] Touch pad 140 may be implemented using conventional touch pad
technologies which are capable of detecting user manipulation or other
contact with an associated touch key 131. During use, the touch pad
generates signals which may be communicated to main PCB 170 via
flexible printed circuit board (FPCB) 40, for example. Touch pad 140
may be coupled to the bottom side of first body 110a using known
techniques (e.g., adhesive, tape, and the like). Suitable touch pads
include, for example, pressure-sensitive touch pads, capacitance touch
pads, and the like.
[0039] Touch pad 140 may also include one or more strategically located light
guides 141. As shown, each light guide 141 is associated with an
individual touch key 131. As an example, the touch pad may be
shaped to define an aperture which forms an individual light guide.
Light guides 141 are often implemented to permit light provided by
light sources 145 to pass through touch pad 140, and consequently,
optically transmissive touch keys 131. If desired, optically
transmissive material may be formed within some or all of the light
guides. This feature enhances the structural integrity of the touch pad.
[0040] Light sources 145 may be implemented using known devices and
structures which can provide light at the wavelength of interest to one
or more touch keys 131. Typical light sources include light emitting


diodes (LEDs) and vertical surface emitting lasers (VCSELs), among
others. The light sources may receive the necessary power via FPCB
40, which is associated with touch pad 140 and is in communication
with main PCB 170.
[0041] It is notable that light emitted by light sources 145 is not unnecessarily
hindered by structures, which is common in conventional assemblies.
More specifically, light emitted by light sources 145 reaches touch keys
i
131 relatively unimpeded. This reduces the number of needed light
sources, which consequently reduces the power requirements of the
assembly.
[0042] Although possible, it is not necessary for each touch key 131 to have
an associated light source 145. In general, the number of light sources
is fewer than the number of touch keys. In some implementations, a
single light source provides sufficient light to all touch keys.
Maximum light to the touch keys may be achieved by positioning each
light source relatively close to an associated light guide 141.
[0043] Optical waveguide 150, which is an optional component, is shown
positioned relative to the bottom side of touch pad 140. The
waveguide may be formed from a suitable material (e.g., glass or
plastic) which transmits light at the wavelength of interest. If desired,
optical waveguide 150 may be coupled to the bottom side of touch pad
140 using known techniques (e.g., adhesive, tape, and the like). It is
not a requirement that the waveguide 150 actually contact touch pad
140. As an alternative, these components may be placed in a close
physical relationship, but not actually contacting each other.


[0044] Optical waveguide 150 may further include one or more additional
features. For instance, as more clearly shown in FIG. 3, the waveguide
may include a separate recess 151 individually associated with each of
the light sources 145. Each recess may be formed in a top surface of
the optical waveguide, and is typically sized to receive at least a
portion of an associated one of the light sources. The recesses permit a
relatively tight coupling between waveguide 150 and touch pad 140,
thereby reducing the need for a gap between these components. Since
no gap is needed to allow for clearance for the light sources, the overall
thickness of the assembly may be reduced.
[0045] Optical waveguide 150 is also shown having optional light disturbing
elements 152. These elements may be formed on the bottom side of
the waveguide at locations which correspond to each of the light guides
141. One purpose of the light disturbing elements is to intensify
reflected light received by touch keys 131 (via light guides 141). If
desired, the light disturbing elements may be structured to form a
concave shape to further intensify the reflected light. One technique
for forming the light disturbing elements is to scratch the bottom
surface of the waveguide.
[0046] Optional reflection element 160 is shown operatively associated with
the bottom side of optical waveguide 150. The reflection element may
be implemented using material which is structured to reflect light from
light sources 145. Possible materials include a reflection sheet formed
as a thin metal plate, resin coated with gold foil, or paper.


[0047] Operation of mobile terminal 100 implementing touch key assembly
130 may proceed as follows. After the mobile terminal is activated,
light is emitted by light sources 145 and travels through optical
waveguide 152. The light is reflected by reflection element 160 and
light disturbing elements 150, causing light to propagate through light
guides 141 and corresponding touch keys 131. This lighting function
may be continuously employed, or activated only during periods of
reduced lighting conditions as controlled by, for example, a manual
switch or via a light sensor (not shown).
[0048] FIG. 6 is a perspective view of a slide-type mobile terminal according
to an alternative embodiment of the present invention. Mobile
terminal 200 includes first body 220, which is structured to slideably
engage second body 210. Display 222, speaker 223, and touch key
assembly 130 are coupled to the first body. Key pad 211 and
microphone 212 are shown positioned on an upper surface of second
body 210. The second body can be opened or closed by providing
relative sliding motion between the first and second bodies. If desired,
touch key assembly 130 may be located at second body 210, and key
pad 211 located at first body 220. Another alternative is to replace key
pad 211 on second body 210 with a second touch key assembly 130,
such that the mobile terminal includes two touch key assemblies.
[0049] Embodiments of the present invention are not limited to the specific
arrangement of the touch keys disclosed herein. For instance, one
possible alternative is shown in FIG. 7, which is a perspective view of
a slide-type mobile terminal according to another alternative


embodiment of the present invention. In this figure, mobile terminal
300 includes a circular touch key assembly 130 which has several
touch keys 131. The touch key assembly of this embodiment is shaped
to permit positioning of push key 380, which may be lighted using
conventional techniques.
[0050] FIG. 8 is a flowchart showing a method of making a touch key
assembly according to an embodiment of the present invention. As
shown, block 400 includes forming a light guide in a touch pad. Block
410 includes positioning at least one light source relative to the bottom
side of the touch pad. This operation may be accomplished by
coupling the light source to the bottom side of the touch pad. Block
420 includes positioning the light source relative to the light guide to
provide light to the light guide. If desired, the method may further
include positioning an optical waveguide relative to the bottom side of
the touch pad, or positioning a reflection element relative to a bottom
side of the optical waveguide, or perform both operations.
[0051] Various touch key assemblies have been described herein as being
implemented in conjunction with flip-type, bar-type, and slide-type,
mobile terminals. However, embodiments of the present invention are
not so limited and other configurations are possible and within the
teachings of the present disclosure. If desired, a touch key assembly
may alternatively be implemented in other devices and systems in
which lighted keys and other locations is desired. Such devices and
systems include portable digital assistants (PDAs), hand-held
computers, audio and video players, and the like.


[0052] The foregoing embodiments and advantages are merely exemplary and
are not to be construed as limiting the present invention. The present
teaching can be readily applied to other types of apparatuses and
processes. The description of the present invention is intended to be
illustrative, and not to limit the scope of the claims. Many alternatives,
modifications, and variations will be apparent to those skilled in the

WE CLAIM :
1. A touch key assembly, comprising:
a touch pad structured to operatively couple to a cover comprising at
least one touch key which is defined by an optically transmissive region, said
touch pad comprising a light guide associated with said at least one touch
key; and
at least one light source positioned at and coupled directly to a bottom
side of said touch pad, said at least one light source positioned relative to
said light guide to provide light to said at least one touch key.
2. The touch key assembly as claimed in claim 1, comprising:
an optical waveguide positioned relative to said bottom side of said touch
pad, said optical waveguide structured to transmit said light.
3. The touch key assembly as claimed in claim 2, comprising:
a reflection element operatively associated with a bottom side of said
optical waveguide and structured to reflect said light.
4. The touch key assembly as claimed in claim 2, comprising:
a separate recess associated with each of said at least one light source,
said recess formed in a top surface of said optical waveguide and sized to
receive at least a portion of an associated one of said at least one light
source.
5. The touch key assembly as claimed in claim 2, comprising:
a light disturbing element associated with said light guide and formed in
said optical waveguide.
6. The touch key assembly as claimed in claim 1, wherein said touch pad is
further structured to operatively couple to said cover comprising a plurality of
touch keys which are each defined by an optically transmissive region, and
wherein:



said light guide is associated with said plurality of touch keys, and
wherein
said at least one light source is positioned relative to said light guide to
provide light to said plurality of touch keys.
7. The touch key assembly as claimed in claim 1, wherein said touch pad is
further structured to operatively couple to said cover comprising a plurality of
touch keys which are each defined by an optically transmissive region, said
touch key assembly comprising:
a plurality of light guides individually associated with one of said plurality
of touch keys.
8. The touch key assembly as claimed in claim 7, comprising:
a plurality of light sources positioned relative to said bottom side of said
touch pad to provide light to said plurality of touch keys.
9. The touch key assembly as claimed in claim 8, wherein the number of
said plurality of light sources is fewer than the number of said plurality of
touch keys.
10. The touch key assembly as claimed in claim 7, wherein each of said
plurality of light guides comprise optically transmissive material.
11. The touch key assembly as claimed in claim 1, comprising:
an optical waveguide coupled to said bottom side of said touch pad;
a reflection element operatively associated with a bottom side of said
optical waveguide; and
a printed circuit board (PCB) being structured to control said touch pad.
12. The touch key assembly as claimed in claim 1, wherein said touch pad is
one of a capacitance touch pad or a pressure-sensitive touch pad.


13. The touch key assembly as claimed in claim 1, wherein said touch pad is
shaped to define an aperture which forms said light guide.
14. A mobile terminal, comprising:
a housing containing a display;
a touch key assembly associated with said housing, said touch key
assembly as claimed in claim 1.
15. The mobile terminal as claimed in claim 14, wherein said housing
comprises a first body and a second body, wherein said first body is
structured to slideably engage said second body, and wherein said display
and said touch key assembly are coupled to said first body, said mobile
terminal further comprising:
a key pad coupled to said second body.
16. The mobile terminal as claimed in claim 14, wherein said housing
comprises a first body and a second body, wherein said first body is
structured to slideably engage said second body, and wherein said display is
coupled to said first body and said touch key assembly is coupled to said
second body, said mobile terminal further comprising:
a key pad coupled to said first body.
17. The mobile terminal as claimed in claim 14, comprising:
an optical waveguide positioned relative to said bottom side of said touch
pad, said optical waveguide structured to transmit said light.
18. The mobile terminal as claimed in claim 17, comprising:
a reflection element operatively associated with a bottom side of said
optical waveguide and structured to reflect said light.
19. The mobile terminal as claimed in claim 17, comprising:
a light disturbing element associated with said light guide and formed in
said optical waveguide.
20. The mobile terminal as claimed in claim 14, wherein said touch pad
assembly comprises a plurality of touch keys which are each defined by an
optically transmissive region, said touch key assembly comprising:
a plurality of light guides each of which is individually associated with one
of said plurality of touch keys.

Documents:

00858-kol-2006-assignment.pdf

00858-kol-2006-correspondence-1.1.pdf

0858-kol-2006 abstract.pdf

0858-kol-2006 claims.pdf

0858-kol-2006 correspondenc(others).pdf

0858-kol-2006 description(complete).pdf

0858-kol-2006 drawings.pdf

0858-kol-2006 form1.pdf

0858-kol-2006 form2.pdf

0858-kol-2006 form3.pdf

0858-kol-2006 form5.pdf

0858-kol-2006 g.p.a.pdf

858-KOL-2006-ABSTRACT.pdf

858-KOL-2006-AMANDED CLAIMS.pdf

858-kol-2006-assignment.pdf

858-KOL-2006-CANCELLED PAGES.pdf

858-kol-2006-correspondence.pdf

858-KOL-2006-DESCRIPTION (COMPLETE).pdf

858-KOL-2006-DRAWINGS.pdf

858-KOL-2006-ENGLISH TRANSLATION.pdf

858-kol-2006-examination report.pdf

858-KOL-2006-FORM 1.pdf

858-kol-2006-form 18.pdf

858-KOL-2006-FORM 2.pdf

858-kol-2006-form 3.1.pdf

858-KOL-2006-FORM 3.pdf

858-kol-2006-form 5.pdf

858-KOL-2006-FORM-27.pdf

858-kol-2006-gpa.pdf

858-kol-2006-granted-abstract.pdf

858-kol-2006-granted-claims.pdf

858-kol-2006-granted-description (complete).pdf

858-kol-2006-granted-drawings.pdf

858-kol-2006-granted-form 1.pdf

858-kol-2006-granted-form 2.pdf

858-kol-2006-granted-specification.pdf

858-KOL-2006-OTHERS.pdf

858-kol-2006-others1.1.pdf

858-KOL-2006-PETITION UNDER RULE 137.pdf

858-KOL-2006-PRIORITY DOCUMENT.pdf

858-kol-2006-priority document1.1.pdf

858-KOL-2006-REPLY TO EXAMINATION REPORT.pdf

858-kol-2006-reply to examination report1.1.pdf

858-kol-2006-translated copy of priority document.pdf

abstract-00858-kol-2006.jpg


Patent Number 246773
Indian Patent Application Number 858/KOL/2006
PG Journal Number 11/2011
Publication Date 18-Mar-2011
Grant Date 15-Mar-2011
Date of Filing 21-Aug-2006
Name of Patentee LG ELECTRONICS INC.
Applicant Address 20, YOIDO -DONG YONGDUNGPO SEOUL
Inventors:
# Inventor's Name Inventor's Address
1 KO DONG-SEUCK 86-8, SERYU 1-DONG GWONSEON-GU SUWON GYEONGGI-DO
2 CHOO ZHI-MIN SYAREUMANG 617 1598 GWANYANG-DONG DONGAN-GU ANYANG GYEONGGI-DO
3 LEE HYUNG-WOON JUGONG APARTMENT 218-402 373 CHEOLSAN 3-DONG GYEONGGI-DO
PCT International Classification Number G09G 5/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 80371/2005 2005-08-30 Republic of Korea
2 136199/2005 2005-12-30 Republic of Korea