JPH11258599A - Liquid crystal display - Google Patents

Abstract

(57) [Problem] To reduce the number of parts and man-hours in a liquid crystal display device configured by combining a liquid crystal cell 11 and a backlight body 22 illuminating the liquid crystal cell 11. SOLUTION: A backlight assembly 21 having a frame 23 and a backlight 22 incorporated in the frame 23 is provided. The frame body 23 is provided with a frame portion 26 corresponding to at least two parallel side edges 11b of the liquid crystal cell 11, and the frame portion 26 is provided with a groove portion 28 into which the edge portion 11b of the liquid crystal cell 11 is inserted. Liquid crystal cell
The liquid crystal cell 11 is fixed to the frame 23 by inserting the edge 11b of the 11 into the groove 28 of the frame 23, and the liquid crystal cell 11 is combined with the backlight 22 incorporated in the frame 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid crystal display device comprising a combination of a liquid crystal cell and a backlight for illuminating the liquid crystal cell.

[0002]

2. Description of the Related Art Conventionally, in a liquid crystal display device constructed by combining a liquid crystal cell and a backlight body, for example, FIG.
The structure as shown in FIG.

That is, a liquid crystal cell 1 is arranged on a backlight structure 3 having a backlight body (surface light source) 2,
A protective bezel 4 is placed over the liquid crystal cell 1 and the bezel 4 is fixed to the backlight assembly 3, so that the liquid crystal cell 1 is located between the backlight assembly 3 and the bezel 4.
Is fixed.

[0004] The method of fixing the backlight assembly 3 and the bezel 4 includes screwing with screws 5 shown, fitting of the backlight assembly 3 and the bezel 4, and fixing nails formed on the bezel 4 to the backlight. There are fixing means for caulking the structure 3, and these fixing means are used alone or in combination.

[0005]

However, in the conventional liquid crystal display device, in order to fix the liquid crystal cell 1, the bezel 4 and the screw 5 are required as parts which are not necessary for the original function of the liquid crystal display device. In addition, since the fixing of the bezel 4 requires screwing, fitting, and caulking, the number of parts and the number of steps are increased, and the weight and cost of the product are disadvantageous.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the number of parts and man-hours in a liquid crystal display device configured by combining a liquid crystal cell and a backlight body.

[0007]

According to the liquid crystal display device of the present invention, a liquid crystal cell and a frame corresponding to at least two parallel sides of the liquid crystal cell are formed, and the liquid crystal cell is formed in the frame. The frame includes a frame in which a groove into which an edge is inserted is formed, and a backlight assembly having a backlight incorporated in the frame and illuminating a liquid crystal cell.

Then, the liquid crystal cell is fixed to the frame by inserting the edge of the liquid crystal cell into a groove formed in the frame of the backlight structure, and the liquid crystal cell is incorporated in the frame. Combine with This eliminates the need for conventional components such as a bezel and man-hours for fixing the same in order to combine the liquid crystal cell and the backlight structure.

Further, the frame is provided with a locking portion for allowing the liquid crystal cell to be inserted into the groove and locking the liquid crystal cell inserted into the groove. The liquid crystal cell inserted into the groove is securely fixed by the locking portion.

Further, a circuit board is connected to an edge portion of the liquid crystal cell, and an insertion portion through which the circuit board is inserted is provided in a groove of the frame body, and the liquid crystal cell to which the circuit board is connected is fixed. Can also be supported.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment, FIG. 1 is a perspective view of an exploded state of a liquid crystal display device, and FIG. 2 is an explanatory view showing a state in which a liquid crystal cell is inserted into a groove of a frame body. FIG. 3 is an explanatory view showing a state where the liquid crystal cell is inserted into the groove of the frame.

In the figure, reference numeral 11 denotes a light transmitting type liquid crystal cell,
The liquid crystal cell 11 is formed by bonding two transparent substrates having transparent electrodes and sealing liquid crystal between the two transparent substrates, is formed in a rectangular plate shape, and is formed in a parallel shape along the longitudinal direction. Two edges (long sides) 11a, and two parallel edges (short sides) 11b along the short direction,
A central area excluding the edges 11a and 11b is formed as an effective display surface.

Reference numeral 21 denotes a backlight structure. The backlight structure 21 has a backlight 22 and a frame 23.

The backlight body 22 is a planar light source and has a light emitting surface 24 formed corresponding to the shape of the effective display surface of the liquid crystal cell 11. The light emitting surface 24 emits light from a light source (not shown). It is composed of a light guide plate that uniformly guides light over the entire surface 24, a diffusion plate that diffuses light, and the like.

The frame 23 has a base 25 into which the backlight 22 is incorporated, and the three edges 11a, 11b,
Frame portions 26 and 27 are formed on three sides of the base 25 corresponding to 11b so as to protrude in a substantially U-shape. A liquid crystal cell in the frame part 26 on two parallel sides
A groove 28 into which the edge 11b of the frame 11 is inserted is formed at a position away from the upper surface of the base 25. Edge of
A groove 29 into which 11a is inserted is formed. Grooves 28, 29
The width of the groove and the distance between the opposing grooves 28 are
The liquid crystal cell 11 is formed in such a size that it can be inserted and the liquid crystal cell 11 can be held without rattling.

One end of each groove 28 is opened and the other end thereof is communicated with the groove 29. As shown in FIG.
A locking portion 30 is formed on the upper edge of the one end opening. The locking portion 30 is formed in a claw shape protruding into the groove portion 28, and the outer surface side is formed on an inclined surface 31 that allows the liquid crystal cell 11 to be inserted into the groove portion 28, and the inner surface side is inserted into the groove portion 28. It is formed on a substantially vertical locking surface 32 for locking the end surface of the liquid crystal cell 11 thus formed.

The liquid crystal cell 11 and the backlight structure 21
In order to combine the two, insert the edges 11b on both sides of the liquid crystal cell 11 from the opening side of the groove 28 of the frame part 26 on both sides of the frame body 23, and press and slide the liquid crystal cell 11 while sliding the edge part of the liquid crystal cell 11. 11b into the groove 28, and
The 11 edge 11a is inserted into the groove 29 of the frame 27.

When the liquid crystal cell 11 is inserted into a predetermined position of the backlight assembly 21, the locking portion 30 on the opening side of the groove 28 is
The engagement with the edge 11a opposite to the insertion direction of the liquid crystal cell 11 prevents the liquid crystal cell 11 from dropping in the direction opposite to the insertion direction.

As described above, when the liquid crystal cell 11 and the backlight assembly 21 are combined, the three edges of the liquid crystal cell 11
11a, 11b, 11b are inserted into the grooves 28, 29 and held by the frame 23, and the effective display surface of the liquid crystal cell 11 is opposed to the light emitting surface 24 of the backlight 22 in a state where it is separated.

As described above, the edges 11a, 11a of the liquid crystal cell 11
b is a groove 28 formed in the frame 23 of the backlight structure 21,
By inserting the liquid crystal cell 11 into the frame 23, the liquid crystal cell 11 can be fixed to the frame 23, and the liquid crystal cell 11 can be combined with the backlight 22 incorporated in the frame 23. No man-hours are required, and the number of parts and man-hours can be reduced.

Further, the locking portion 30 provided on the frame 23 allows
By allowing the liquid crystal cell 11 to be inserted into the grooves 28 and 29 and locking the liquid crystal cell 11 inserted into the grooves 28 and 29,
The liquid crystal cell 11 inserted into the grooves 28, 29 can be fixed securely.

Next, FIG. 4 shows a second embodiment.

The liquid crystal cell 11 has a tape carrier package (hereinafter referred to as TCP) having an IC mounted on a flexible substrate at two edges adjacent to the liquid crystal cell 11 at right angles.
12 and a circuit board 13 connected to the TCP 12 are connected.

The TCP 23 and the circuit board are connected to the frame 23 by connecting the lower side of the groove 28 of one frame 26 to the outer surface of the frame 26.
An insertion portion 41 into which the hole 13 is inserted is formed. Thus, one of the frame portions 26 is in a cantilevered support state in which only one end is supported by the frame portion 27 side, but if the strength of the frame portion 26 is appropriately maintained, there is no problem in fixing the liquid crystal cell 11. Absent.

The liquid crystal cell 11 and the backlight assembly 21
When the combination is made, the edge 11b of the liquid crystal cell 11 where the TCP 12 and the circuit board 13 are connected is set to the one frame 26 side, and the edge 11a where the TCP 12 and the circuit board 13 are connected is By being on the opposite side, they are combined as described above.

Therefore, in the second embodiment, the same function and effect as those of the first embodiment can be obtained, and the liquid crystal cell in which the TCP 12 and the circuit board 13 are connected is provided.
11 can be fixed.

It is to be noted that holding only at least two parallel edges 11b, 11b of the liquid crystal cell 11 is not enough.
Can be fixed to the frame 23 of the backlight structure 21. Therefore, the frame body 23 of the backlight structure 21 may have only the frame parts 26, 26 corresponding to at least two parallel edges 11b of the liquid crystal cell 11. In this case, the locking portions 30 are provided on the opening sides on both sides orthogonal to the frame portions 26, 26, respectively.

[0029]

According to the liquid crystal display device of the present invention, the liquid crystal cell can be fixed to the frame by inserting the edge of the liquid crystal cell into the groove formed in the frame of the backlight structure. Can be combined with the backlight body incorporated in the frame body, and components such as a conventional bezel and man-hours for fixing the same are not required, and the number of parts and man-hours can be reduced.

Furthermore, the liquid crystal cell inserted into the groove portion is locked by allowing the insertion of the liquid crystal cell into the groove portion and locking the liquid crystal cell inserted into the groove portion by the locking portion provided on the frame. Can be fixed securely.

Further, by providing the insertion portion through which the circuit board connected to the edge of the liquid crystal cell is inserted in the groove of the frame, it is possible to fix the liquid crystal cell to which the circuit substrate is connected.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which a liquid crystal cell is inserted into a groove of the upper frame.

FIG. 3 is an explanatory diagram showing a state in which a liquid crystal cell is inserted into a groove of the upper frame.

FIG. 4 is an explanatory view showing a state in which a liquid crystal cell is inserted into a groove of a frame according to a second embodiment of the present invention.

FIG. 5 is an exploded perspective view of a conventional liquid crystal display device.

[Explanation of symbols]

 11 Liquid crystal cell 13 Circuit board 21 Back light structure 22 Back light body 23 Frame body 26, 27 Frame part 28, 29 Groove part 30 Lock part 41 Insertion part

Claims (3)

[Claims] 1. A liquid crystal cell, and a frame formed with a frame corresponding to at least two parallel edges of the liquid crystal cell, and a groove formed in the frame to insert the edge of the liquid crystal cell. A liquid crystal display device comprising: a body; and a backlight assembly having a backlight body incorporated in the frame and illuminating the liquid crystal cell. 2. The frame according to claim 1, wherein the frame is provided with a locking portion for allowing insertion of the liquid crystal cell into the groove and locking the liquid crystal cell inserted into the groove. Liquid crystal display device. 3. The liquid crystal display according to claim 1, wherein a circuit board is connected to an edge of the liquid crystal cell, and an insertion portion through which the circuit board is inserted is provided in a groove of the frame. apparatus.