Liquid crystal cells – elements and systems – Particular structure – Holder – support – frame – or housing
Reexamination Certificate
1999-02-25
2002-01-15
Sikes, William L. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Holder, support, frame, or housing
Reexamination Certificate
active
06339457
ABSTRACT:
This application claims the benefit of Korean Patent Application No.
98-6027
, filed on Feb. 25, 1998, which is hereby incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a liquid crystal display device, and more particularly, to a case for a liquid crystal display apparatus.
2. Discussion of the Related Art
Generally, a conventional liquid crystal module is composed of a liquid crystal panel and a drive circuit for driving the liquid crystal panel. The liquid crystal panel includes liquid crystal cells arranged in a matrix pattern between two glass substrates, and switching elements for each switching signal to be applied to the liquid crystal cell. Since such liquid crystal module has the glass substrates, the liquid crystal module may be damaged by an exterior impact. To prevent such damage of the liquid crystal module, a case has been employed for surrounding the exterior of the liquid crystal module for protection.
Referring to
FIG. 1
, the liquid crystal display case includes a frame
10
made from a plastic material and a top case
20
engaging the frame
10
to surround a liquid crystal module
30
. Between the frame
10
and the liquid crystal display module
30
, there are installed a back light lamp, light guiding plate, reflective layer, diffusion layer, and concentration sheets (not shown) on the plastic frame
10
. The plastic frame
10
is called the “back light unit” because the back light lamp is installed thereon. The liquid crystal display module
30
is composed of a liquid crystal panel
32
, first and second PCBs (Printed Circuit Board)
34
and
36
respectively installed at the rear and left edges of the liquid crystal panel
32
. The liquid crystal display module
30
is fixed at the plastic frame
10
by attaching the front edge of the liquid crystal panel
32
into hooks
12
formed on the plastic frame
10
. Then, the first PCB
34
is folded to surround the rear edge of the plastic frame
10
, and located at the rear edge of the surface of the plastic frame
10
. Similarly, the second PCP
36
is folded to surround the left edge of the plastic frame
10
, and located at the left edge of the surface of the plastic frame
10
. Such plastic frame
10
combined with the liquid crystal display module
30
is loaded onto the top case
20
before being secured by an engaging means. The LCD module
30
is fixed without movement in the top case
20
. The engaging means includes fixed protrusions
16
protruding from the front face of the plastic frame
10
, fixed holes
24
formed on the front wall
20
a
of the top case
20
, and hooking jaws
26
provided at each top edge of the fixed holes
24
. Each of the fixed protrusions
16
is inserted into the fixed hole
24
. The hooking jaw
26
allows the fixed protrusion to be retained in the fixed hole
26
. Also, the engaging means includes hooking wings or blades or fingers
28
formed at each center and top edge of the side walls
20
b
and
20
c
, and at both end of the rear wall
20
d
. Each of the hooking wings
28
is flexed or bent by a manufacturer toward the inside to prevent the movement of the plastic frame
10
in the vertical direction. Furthermore, the engaging means includes screw holes
18
formed at each corner of the plastic frame
10
, and screw holes
29
provided at each comer of the top case
20
. Screws pass through the respective screw holes
18
on the plastic frame
10
and the screw holes
29
on the top case
20
to closely couple or attach the plastic frame
10
to the top case
20
.
In such a liquid crystal display case of
FIG. 1
, the coupling or attaching processes are complex and require much time because the engaging means has a complex structure. Also, the fixed protrusion may be damaged and the liquid crystal display case may be undesirably modified, because of the interference from the hooking jaw when coupling or combining the liquid crystal display case. Because of this, it is difficult to closely couple or combine the liquid crystal display case and the quality of the liquid crystal display apparatus deteriorates.
SUMMARY OF THE INVENTION
Accordingly, the present invention is directed to a case for a liquid crystal display that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide a liquid crystal display case that is adapted to prevent the damage of a liquid crystal display device such as by an exterior impact or a vibration.
Additional 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.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a liquid crystal display case according to one aspect of the present invention includes a frame for supporting a liquid crystal display device; a top case receiving the frame to surround the liquid crystal display device; and engaging means allowing the frame and the top case to be engaged each other by loading the frame into the top case.
In another aspect of the present invention, a portable computer having a case for a liquid crystal display device comprises a frame for supporting the liquid crystal display device; a top case receiving the frame and substantially surrounding the liquid crystal display device; and an engaging unit attaching the frame to the top case by loading the frame onto the top case.
In another aspect of the present invention, a case for a display panel comprises a frame having a hook and a protrusion; a top case having first, second, third, and fourth side walls, and a portion for receiving the protrusion from the frame; a display panel attached to the frame through the hook, the display panel being between the plastic frame and the top case, wherein the frame with the display panel is loaded onto the top case.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
REFERENCES:
patent: 4294517 (1981-10-01), Jakubek
patent: 5274486 (1993-12-01), Yamazaki et al.
patent: 5654779 (1997-08-01), Nakayama et al.
patent: 5946062 (1999-08-01), Hasegawa et al.
Chowdhury Tarifur R.
LG.Philips LCD Co. , Ltd.
Long Aldridge & Norman LLP
Sikes William L.
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