JP2001356324A - Display module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display module having reduced cost. SOLUTION: The display module is provided with a panel body 2 having a display window part 22, a liquid crystal panel 3 facing the display window part 22, a light source 4 illuminating the liquid crystal panel 3, plate-shaped members 5 lying between the light source 4 and the liquid crystal panel 3, a holding body 6 positioning and holding the plate-shaped members 5 and the liquid crystal panel 3 and a cover 7 covering the back of the holding body 6 and the holding body 6 is fixed directly to the back of the panel body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a display module fixing structure using a liquid crystal panel.

[0002]

2. Description of the Related Art Conventionally, an OA device such as a copying machine or a facsimile is equipped with an operation panel having a liquid crystal display facing a display window of a panel body. The operation panel is integrated with a liquid crystal module attached to a display window of the panel body. Most of the liquid crystal modules will be described with reference to FIG. 3 using, for example, the one disclosed in Japanese Patent Application Laid-Open No. H11-31775. A frame 10 made of a synthetic resin holding a liquid crystal panel 101 and a backlight unit 102 will be described.
3 is sandwiched between a metal front frame 104 and a cover 105. The backlight unit 102 includes a light source 106 formed of a linear discharge tube such as a CFL and a light guide 106 for guiding the light from the light source 106 to the liquid crystal panel 101. A plate-like member 10 made of a light body or a diffusion plate for diffusing light from the light guide;
The so-called edge light type, which is arranged on the side of the light guide, is mainly used.

[0003]

However, since the conventional operation panel has a structure in which a liquid crystal module purchased or manufactured in advance is assembled into a panel body as a finished product, the parts cost increases when purchasing the liquid crystal module. In the case of manufacturing a liquid crystal module, the assembling cost for the liquid crystal module is increased, causing an increase in cost.

[0004] The present invention has been made in view of this point,
The main purpose is to provide a display module that can achieve cost reduction.

[0005]

In order to achieve the above object, the present invention provides a panel body having a display window, a liquid crystal panel facing the display window, a light source for illuminating the liquid crystal panel, and a light source. A plate-shaped member interposed between the liquid crystal panel, a holding body for positioning and holding the plate-shaped member and the liquid crystal panel, and a cover covering the back of the holding body; and The holder is directly fixed.

The present invention also provides a first fixing means for fixing the liquid crystal panel, the plate-like member, and the cover to the holding body to form an assembly, and the assembly for the panel body. And second fixing means for fixing the

Further, the present invention is characterized in that the holder is made of a synthetic resin material.

Further, the present invention is characterized in that the first fixing means is a screw screwed to the holding body, and the second fixing means is a screw screwed to the panel body.

[0009]

1 and 2 show an embodiment of the present invention. Hereinafter, an embodiment of the present invention will be described based on these figures. FIG. 1 is a perspective view of a display module according to an embodiment of the present invention when viewed from the rear side, and FIG. 2 is a cross-sectional view of FIG. 1 after assembly.

In FIG. 1, a display module 1 includes a panel body 2, a liquid crystal panel 3 arranged behind the panel body 2, and a liquid crystal panel 3 arranged behind the liquid crystal panel 3.
A light source 4 for illuminating the light source, a plate member 5 disposed between the liquid crystal panel 3 and the light source 4, and a liquid crystal panel 3 and the plate member 5 disposed between the panel body 2 and the liquid crystal panel 3. And a cover 7 disposed behind the plate-shaped member 5.

The panel body 2 is made of a synthetic resin material, for example, ABS.
(Acrylonitrile butadiene styrene), PC (polycarbonate), etc., and a plurality of holes 21 forming a push button (not shown) of the display module 1 main body, and a liquid crystal panel 3 whose display can be switched by pressing the push button, for example.
And a projection 23 formed around the display window 22 in a boss shape and capable of being screwed.
And a plurality of elastic pieces 25 similarly formed around the display window 22 and provided with locking claws 24.

The liquid crystal panel 3 has liquid crystal sealed between a pair of glass substrates. The liquid crystal panel 3 includes various circuit components including a driving IC (not shown) adjacent in parallel with the side surface and a circuit substrate 31 made of a TCP film. The liquid crystal panel 3 and the TCP film are thermocompression-bonded and fixed by an anisotropic conductive film.
Further, various circuit components including the driving IC on the TCP film and the circuit board 31 are conductively fixed by means such as soldering.

The light source 4 includes a linear discharge tube, for example, a lamp 41 made of CFL, and a rubber holder 42 made of, for example, silicon rubber, mounted on both ends of the lamp 41.
And the lamp 4 through a hole provided in the rubber holder 42.
1 is connected to one end and the other end is connected to an external circuit (not shown) for backlight illumination. A lamp case 44 made of a synthetic resin material provided with a concave portion 44a for holding a rubber holder 42 is provided. And first screw holes 45 provided at both ends of the lamp case 44.

The plate-like member 5 is provided with a light guide 51 made of an acrylic resin for guiding the light of the light source 4 to the liquid crystal panel 3, and is disposed between the light guide 51 and the liquid crystal panel 3. Plate 52 made of a PET sheet for uniformly illuminating the liquid crystal panel 3 via the light guide 51, and a reflection plate 53 made of the same PET sheet for efficiently guiding the light of the light source 4 to the light guide 51. And Further, as the plate-like member 5, any number of members can be provided between the lamp 41 and the liquid crystal panel 3 and preferably any number of members that are preferably related to illumination.

The holding body 6 is made of a synthetic resin material, and has a window 61 for allowing the display section of the liquid crystal panel 3 to face the panel body 2.
A first positioning portion 62 for positioning the liquid crystal panel 3 outside the window portion 61; and a second positioning portion 63 for positioning the plate member 5 outside the first positioning portion 62.
And a fixing portion 64 formed at a position corresponding to a second screw hole (described later) of the cover 7 and screwed with a screw (described later).
And a protruding piece 65 formed at a position corresponding to the elastic piece 25 of the panel body 2 and protruding outward, and a convex part 66 formed at a position corresponding to a notch (described later) of the cover 7. Things.

The cover 7 is made of a metal material and has a second screw hole 71 corresponding to the fixing portion 64 of the holder 6, a third screw hole 72 located outside the second screw hole 71,
A plurality of cutout steps 73 for holding the lamp case 44 of the light source 4 and a cutout 74 into which the protrusion 66 of the holder 6 is inserted and engaged are provided.

Next, a method of assembling the display module 1 according to the present embodiment will be described. First, panel body 2
The holder 6 is mounted from above the panel body 2 with the rear side of the panel up. At this time, the panel body 2 and the holding body 6 are temporarily fixed by the engagement of the locking claws 24 of the panel body 2 with the protruding pieces 65 of the holding body 6.

Next, with the back of the liquid crystal panel 3 facing upward, the liquid crystal panel 3 is assembled into the first positioning portion 62 of the holder 6, and further, the diffusion plate 52, the light guide 51, and the reflection plate 52 having the same external shape are provided. 53 are sequentially assembled into the second positioning portion 63 with their back surfaces facing upward.

Next, the holder 6 is covered with a cover 7. At this time, the notch 74 of the cover 7 is
Are inserted and engaged, whereby the cover 7 is positioned on the holder 6, and then the screw B 1 serving as the first fixing means is screwed into the fixing portion 64 of the holder 6 via the second screw hole 71. By fixing, the holding body 6 containing the liquid crystal panel 3 and the plate member 5 is fixed to the cover 7 and integrated. Further, the screw B2 serving as the second fixing means is inserted into the third screw hole 72.
Then, the cover 7 holding each of the holder 6, the liquid crystal panel 3, and the plate-like member 5 is fixed to the panel body 2 by screwing and fixing the protrusions 23 through the.

Next, the lamp case 44 of the light source 4 is press-fitted and fixed along the cutout step 73 of the cover 7, and a screw B 3 serving as a third fixing means is inserted through the first screw hole 45 into the holder 6. The light source 4 is fixed to the cover 7 by being screwed and fixed to the fixing portion 64, and the assembly of the display module 1 is completed.

As described above, in the present embodiment, the display window 2
A liquid crystal panel 3 facing a display window 22 behind a panel body 2 having a light source 2, a light source 4 for illuminating the liquid crystal panel 3,
A plate member 5 interposed between the light source 4 and the liquid crystal panel 3
And a holding member 6 for positioning and holding the plate member 5 and the liquid crystal panel 3 and a cover 7 covering the back of the holding member 6, and by directly fixing the holding member 6 behind the panel body 2. The metal front frame, which has been conventionally required as a component of the liquid crystal module, can be made unnecessary by replacing the metal front frame with the holder 6 of the present embodiment, so that the number of components can be reduced and the cost increase can be suppressed.

Further, in this embodiment, each of the holding body 6, the liquid crystal panel 3, the plate member 5, and the cover 7 is formed into an aggregate by the screw B1, and the aggregate is formed by the screw B2 into the panel body 2. Screw B2
By releasing the fixing, the assembly can be collectively removed and the replacement workability is facilitated.

In this embodiment, since the holding member 6 is formed of a synthetic resin material, the holding member 6 is lightweight and the positioning member 6 is formed.
2, 63 and the fixing portion 64 are easily processed, and the screws B1
Even if the fixing means is made of burring or the like, the productivity can be improved.

In this embodiment, the first fixing means is a screw B1 screwed to the holding body 6 via the cover 7, and the second fixing means is screwed to the panel body 2 via the cover 7. With the screw B2, the liquid crystal panel 3 and the plate-like member 5 housed in the holder 6 can be securely held, and the main body strength of the display module 1 can be increased.

In this embodiment, the first fixing means is formed by the screw B1.
The holder 6 may be fixed by caulking the caulking piece.

In this embodiment, the liquid crystal panel 3 and the plate-like member 5 are assembled in a laminated state after the holding member 6 is positioned on the panel body 2. May be incorporated in a laminated state, and this may be fixed to the panel body 2.

In the present embodiment, the assembly integrated through the screw B1 is screwed directly to the panel body 2 through the screw B2. A buffer or a spacer may be interposed.

[0028]

As described above, according to the present invention, it is possible to provide a display module which can achieve the intended purpose and can achieve cost reduction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a display module according to an embodiment of the present invention when viewed from the back side.

FIG. 2 is a sectional view after the assembly of FIG. 1;

FIG. 3 is a perspective view of a conventional liquid crystal module.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display module 2 Panel body 21 Hole part 22 Display window part 23 Projection part 24 Locking claw 25 Elastic piece 3,101 Liquid crystal panel 31 Circuit board 4,106 Light source 41 Lamp 42 Rubber holder 43 Cord 44 Lamp case 44a Depression 45 First 5, 107 plate-like member 51 light guide 52 diffusion plate 53 reflection plate 6 holder 61 window 62 first positioning portion 63 second positioning portion 64 fixing portion 65 projecting piece 66 convex portion 7, 105 cover 71 second screw hole 72 third screw hole 73 notch step 74 notch 102 backlight unit 103 frame 104 front frame B1 screw B2 screw B3 screw

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H089 HA40 JA10 QA09 QA12 5G435 AA17 BB12 BB15 EE02 EE27 FF03 FF06 FF08 GG24 KK03 LL07 LL08

Claims (4)

[Claims] 1. A panel body having a display window, a liquid crystal panel facing the display window, a light source for illuminating the liquid crystal panel, a plate member interposed between the light source and the liquid crystal panel, A display module, comprising: a holder for positioning and holding the plate-shaped member and the liquid crystal panel; and a cover for covering the back of the holder, wherein the holder is directly fixed behind the panel body. 2. A first assembly, wherein the liquid crystal panel, the plate-like member, and the cover are fixed to the holding body to form an assembly.
And a second fixing means for fixing the assembly to the panel body. 3. The display module according to claim 1, wherein said holder is made of a synthetic resin material. 4. The apparatus according to claim 2, wherein said first fixing means is a screw screwed to said holding body, and said second fixing means is a screw screwed to said panel body. Display module.