Computer graphics processing and selective visual display system – Display device with housing structure
Reexamination Certificate
2001-10-24
2004-03-16
Saras, Steven (Department: 2675)
Computer graphics processing and selective visual display system
Display device with housing structure
C361S627000, C361S632000
Reexamination Certificate
active
06707478
ABSTRACT:
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from an application for DISPLAY earlier filed in the Korean Industrial Property Office on Dec. 27, 2000 and there duly assigned Serial No. 83362/2000 by that Office.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to an on screen display (OSD) controller assembly mounted in a displaying apparatus, and more particularly, to an OSD controller assembly including a knob support and a printed circuit board support formed in a monolithic structure.
2. Description of the Related Art
OSD controller units have been mounted in a displaying apparatus, such as a cathode ray tube (CRT) monitor or a liquid crystal display (LCD) monitor, to allow a user to control various OSD functions of the displaying apparatus. Typically, the OSD controller unit is disposed in a space between a front cover and a rear cover of the LCD monitor. Since the LCD monitor is minimized in size and in thickness, the space for installing the OSD controller unit within the LCD monitor becomes smaller and narrower, and the OSD controller unit is required to be compact and slim to be mounted within the limited space of the LCD monitor. The conventional OSD controller unit, however, is disadvantageous due to the large number of bulky components compared to the narrow and small space between the front cover and the rear cover.
The LCD monitor mounted with the conventional OSD controller unit is shown in
FIGS. 5 through 8
. The LCD monitor includes a cover casing
101
defining an outer appearance of the LCD monitor, an LCD panel
103
mounted within cover casing
101
for displaying a visual image thereon, and a stand member
105
supporting a lower part of cover casing
101
.
Cover casing
101
includes a front cover
111
, a rear cover
113
coupled to a rear side of front cover
111
, and a space formed between front cover
111
and rear cover
113
for accommodating therein LCD panel
103
. Front cover
111
is formed with an opening
121
through which a screen of LCD panel
103
displaying the visual image is exposed to an outside of the LCD monitor.
In
FIG. 6
, rear cover
113
is formed with air inlet slots
125
through which outdoor air flows into an inside of cover casing
101
, and a terminal receptacle
127
providing a passage for a variety of peripherals and connection wires. Within cover casing
101
are mounted a panel bracket
115
supporting LCD panel
103
, a main printed circuit board (PCB) assembly
117
transmitting electric signals, such as video signals for the visual images, to LCD panel
103
, and a main PCB cover
119
protecting main PCB assembly
117
.
Panel bracket
115
is coupled to front cover
111
to enclose four circumferential sides and a rear side of LCD panel
103
and to support LCD panel
103
. Main PCB assembly
117
is coupled to a rear surface of panel bracket
115
, and main PCB cover
119
is coupled to panel bracket
115
to enclose main PCB assembly
117
.
The LCD monitor is provided with an OSD controller unit
130
allowing the user to control the OSD functions, such as brightness, size, and position of the screen of LCD panel
103
and to adjust color and vividness of the visual images, etc. On a lower portion of cover casing
101
is provided an OSD controller coupler
140
formed on an inner side of front cover
111
and coupled to OSD controller unit
130
.
OSD controller coupler
140
includes a plurality of knob passing holes
141
and a screw-coupling boss
143
which are formed on a lower portion of front cover
111
below opening
121
, and screw-coupling boss
143
protrudes from an inner side of front cover
111
adjacent to knob passing hole
141
toward rear cover
113
. A thread is formed on a circumferential inner surface of screw-coupling boss
143
.
OSD controller unit
130
, as illustrated in
FIGS. 6 and 7
, includes a knob assembly
131
coupled to OSD controller coupler
140
and an OSD PCB assembly
135
coupled to a rear side of knob assembly
131
. Knob assembly
131
includes a knob support frame
145
having a rectangular shape with predetermined width and length, a boss inserting hole
147
formed on knob support frame
145
corresponding to screw-coupling boss
143
to allow screw-coupling boss
143
to be inserted into boss inserting hole
147
, and a plurality of press knobs
133
integrally formed on knob support frame
145
so as to be elastically supported by knob support frame
145
.
Knob assembly
131
is assembled to front cover
111
when screw-coupling boss
143
of OSD controller coupler
140
is inserted into boss inserting hole
147
of knob assembly
131
. When knob assembly
131
is coupled to OSD controller coupler
140
, press knob
133
is inserted into knob passing hole
141
of OSD controller coupler
140
and protrudes from a front outer surface of front cover
111
.
OSD PCB assembly
135
includes an OSD PCB
151
on which conductors are printed, a plurality of switches
153
(
FIG. 8
) provided lengthwise on a peripheral surface of OSD PCB
151
and in contact with the press knob
133
, and a connection cable
155
extending from OSD PCB
151
so as to be coupled to main PCB assembly
117
for transmitting signals from OSD PCB
151
to main PCB assembly
117
.
OSD PCB
151
and knob supporting frame
145
are the same in size and shape. A screw passing hole
152
(see
FIG. 7
) is formed on OSD PCB
151
in correspondence to screw-coupling boss
143
. OSD PCB assembly
135
is assembled into knob assembly
131
by a screw
156
which passes through screw passing hole
152
so as to be coupled to a free end of screw-coupling boss
143
which passes through boss inserting hole
147
in knob support frame
145
.
OSD PCB
151
is disposed perpendicular to a direction in which press knobs
133
move to contact respective switches
153
mounted on OSD PCB
151
(see FIG.
6
). Because OSD PCB
151
is disposed parallel to front cover
111
, LCD panel
103
, and knob supporting frame
145
, front cover
111
of the LCD monitor is required to have a height B large enough to provide room for OSD PCB
151
and knob support frame
145
. Moreover, LCD panel
103
is disposed spaced-apart from a bottom of cover case
101
by the height B since the LCD monitor needs to provide a large volume of space for OSD controller unit
130
.
OSD controller unit
130
is provided with a ground wire
160
for protecting the displaying apparatus from being damaged due to static electricity transmitted from the outside of the displaying apparatus through knob passing hole
141
as shown in FIG.
8
. Ground wire
160
connects OSD PCB
151
of OSD controller coupler
130
to panel bracket
115
which functions as a ground. With this configuration, the static electricity transmitted from the outside of the displaying apparatus is discharged to panel bracket
115
through ground wire
160
.
The conventional displaying apparatus, however, is required to provide a space corresponding to a height of knob supporting frame
145
and OSD PCB
151
for securing knob supporting frame
145
and OSD PCB
151
to the lower portion of front cover
111
, since OSD PCB
151
of OSD PCB assembly
135
is coupled to knob supporting frame
145
in parallel and coupled to front cover
111
in perpendicular to the direction of movement of press knob
133
.
Accordingly, it is disadvantageous to the outer appearance and the size of the displaying apparatus since the lower portion of the front cover
111
has a width greater than the height B of the knob supporting frame
145
and the OSD PCB assembly
135
, as shown in
FIGS. 5
thru
8
. Moreover, when the OSD controller coupler
140
is assembled, the knob assembly
131
and the OSD PCB assembly
135
need to be manually coupled to the OSD controller
140
coupler by screws. Furthermore, the ground wire
160
is prepared additionally and connected between the OSD PCB assembly
135
and the panel bracket
115
by screws. Therefore, the
Anyaso Uchendu O.
Bushnell , Esq. Robert E.
Samsung Electronics Co,. Ltd.
Saras Steven
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