JP2002229006A - Liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display in which the influence of external force caused from a fixed element in assembling is reduced, and the deformation of a frame-shaped bezel is suppressed. SOLUTION: The side of an opening 15a, in which a bezel 15 is formed in the shape of a picture frame, is formed by a projection-shaped curved line 15A whose intermediate parts 15aa are projected toward a opening center to four corners 15ab of the opening. Thereby, force tend to concentrate on the angles of four corners 15ab of opening 15a, and deformation is reduced greatly, even if external force F is added to produce wrinkles. The deformation is reduced, because the angles of four corners 15ab are moved outside from the position of an original side. The deformation will not cause the display quality level of a liquid crystal cell to deteriorate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device having a frame-shaped bezel that covers the periphery of a liquid crystal cell.

[0002]

2. Description of the Related Art Generally, a liquid crystal display device has a liquid crystal cell in which liquid crystal is sealed between two light-transmitting substrates each having an electrode film formed thereon, as described in, for example, JP-A-5-257166. It has been known. This liquid crystal cell has a drive board and a flexible printed circuit board (FP) for connection.
C), it is integrally assembled with components such as a backlight which is a light source. At the time of this assembling, a frame-shaped bezel is provided on the surface of the liquid crystal cell so as to cover the periphery having an opening for visually exposing the surface of the liquid crystal cell. Are assembled and fixed integrally with each other so as to sandwich the components including the above.

Further, the bezel must be fixed in close contact with the periphery of the surface of the liquid crystal cell. As a fixing element for this purpose, an engaging claw projecting inside the bezel is provided, and this is attached to the backlight member. Engage and fix, or attach the outer peripheral surface of the bezel and the outer peripheral surface of the backlight member integrally with tape, or attach the boss to the housing provided on the outer peripheral portion of both the bezel and the backlight member The screws are screwed together and tightened together.

When a liquid crystal display device is assembled with such fixing elements, as shown in FIGS. 9 and 10, a force F generated on the fixing elements during assembly is applied to the surface of the frame-shaped bezel 11, so that the bezel is The opening 11a of 11 is deformed. The deformation of the opening 11a of the bezel 11
A wrinkle occurs at a portion where the external force F is concentrated.

For example, when a force F in the direction shown in FIG. 9 is applied from the fixing element, the side of the opening 11a is lifted. In this case, the bezel 11 does not adhere to the surface of the liquid crystal cell,
Causes deterioration of appearance quality. When a force F in the direction shown in FIG. 10 is generated, the four corners of the opening 11a are lifted, and the middle part of the side is deformed so as to press the surface of the liquid crystal cell. Thus, when the surface of the liquid crystal cell is pressed, the display quality is reduced.

[0006]

As described above, at the time of assembling the liquid crystal cell and other components, the frame-shaped bezel which covers and holds the periphery of the surface of the liquid crystal cell is deformed by the force generated from the fixing element. Has the problem of getting lost.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a liquid crystal display device in which the influence of an external force generated from a fixing element during assembly is reduced to suppress deformation of a frame-shaped bezel. .

[0008]

SUMMARY OF THE INVENTION The present invention has a liquid crystal cell in which liquid crystal is sealed between two substrates, and a substantially square opening for visually exposing the surface of the liquid crystal cell to cover the periphery of the surface. It has a frame-shaped bezel whose side of the opening is curved, and a fixing element that acts in a direction in which the bezel is brought into close contact with the surface of the liquid crystal cell. The side of the frame-shaped opening of the bezel is formed by a curve. Therefore, by creating a portion which is easily deformed due to a difference in strength with respect to an external force, the influence of the external force is controlled to prevent occurrence of unnecessary deformation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a liquid crystal display according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 7, a liquid crystal cell 13 includes a driving board (not shown) and a flexible printed board (F) for connection.
It is mounted on a backlight 14 as a light source which is a back member together with components such as PC). Also, the liquid crystal cell 13
A frame-shaped bezel 15 is held in contact with the periphery of the liquid crystal cell 13 and sandwiches the liquid crystal cell 13 and other components with the backlight 14.

As shown in FIG. 8 in which the dotted line portion of FIG. 7 is viewed in the direction of the arrow, the liquid crystal cell 13 is provided between the two translucent array substrates 13a and the opposing substrates 13b each having an electrode film formed thereon. A liquid crystal (not shown) is enclosed in the array substrate 13a and the opposite surface of the counter substrate 13b.
13c is pasted.

Further, as shown in FIG. 7, the bezel 15
It has a front part 15b in which a substantially square opening 15a for visually exposing the surface of the liquid crystal cell 13 is formed, and a side part 15c substantially perpendicular to the front part 15b. As shown in FIG. 8, the liquid crystal cell 13 and the backlight 14 are integrally fixed by the bezel 15 and the plastic member 16 on the inner surface of the side surface portion 15c. Further, the outer surface of the side surface portion 15c is approached to the plastic member 16 by pulling, and is adhered by a tape 17 as a fixing element, and is integrally fixed. Further, as shown in FIG. 7, mounting bosses 18 to a housing (not shown) are provided on the outer surface of the side surface portion 15c and the opposing portions of the backlight member 14a, respectively.
By screwing a screw 19 as a fixing element between the mounting bosses 18, 18, the backlight 14 on which the liquid crystal cell 13 and other components are mounted and the bezel 15 are integrally fixed.

The side of the opening 15a of the bezel 15 receives a moving force in the direction of arrow F in FIG. 8 by the pulling force of the fixing element such as the tape 17 or the screw 19. Such an external force F causes the bezel 11 to be deformed. However, since the side of the opening 15a that forms the bezel 15 in a frame shape is formed by a curve, the influence of the external force F is reduced,
This prevents the occurrence of unnecessary deformation.

For example, in the embodiment shown in FIGS. 1 and 2, the side of the opening 15a forming the bezel 15 in a frame shape is not linear as in the conventional example of a straight line shown by a broken line. The intermediate portion 15aa is formed by a convex curve 15A protruding toward the center of the opening with respect to the four corners 15ab of the opening.

When formed in this manner, the four corners 1 of the opening 15a are formed.
The force tends to concentrate on the corner of 5ab, and even if an external force F as shown in FIG. 10 is applied and wrinkles are generated, it is shown by a solid line compared to the deformation amount X11 of the conventional example shown by a broken line in FIG. The deformation X12 according to this embodiment is significantly reduced.
That is, since the corners of the four corners 15ab have moved outward from the positions of the original sides indicated by the broken lines, the amount of deformation is small. Therefore, this deformation does not lower the display quality of the liquid crystal cell 13.

Next, another embodiment will be described with reference to FIGS.

In the embodiment shown in FIGS. 3 and 4, the side of the opening 15a forming the bezel 15 in a picture frame shape is not a conventional straight line shown by a broken line as shown in FIG.
15aa is formed by a concave curve 15B that is recessed from the four corners 15ab toward the center of the opening.

When formed in this manner, the force tends to concentrate on the intermediate portion 15aa of the side of the opening 15a, and when an external force F as shown in FIG. 9 is applied, wrinkles are generated on the intermediate portion 15aa of the side. In FIG. 4, the deformation amount X22 according to the present embodiment shown by a solid line is significantly smaller than the deformation amount X21 according to the conventional example shown by a broken line. For this reason, this deformation does not lower the appearance quality of the liquid crystal display device.

FIGS. 5 and 6 show another embodiment.
This will be described with reference to FIG.

As shown in FIGS. 5 and 6, the side of the frame-shaped opening 15a of the bezel 15 may be formed by an uneven waveform curve 15C. In this case, as shown in FIG. 5, only a pair of long sides may be formed as a concave and convex waveform curve 15C, and the other pair of short sides may be formed by a concave curve 15B similar to FIGS.

When formed in this manner, forces concentrate on the concave portions of the concave curve 15B and the waveform curve 15C and on the corners of the four corners 15ab of the opening 15a, respectively. Compared to the deformation amount X31 due to the example shape, the deformation amount X32 according to this embodiment shown by the solid line is significantly smaller.

[0022]

According to the present invention, since the side of the opening forming the bezel in a frame shape is formed by a curve, deformation of the bezel due to external force can be suppressed, and deterioration in appearance quality and display quality can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a main configuration of a liquid crystal display device according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view showing a deformed portion of the same.

FIG. 3 is a plan view showing a main part of a liquid crystal display device according to another embodiment of the present invention.

FIG. 4 is an enlarged perspective view showing a deformed portion of the same.

FIG. 5 is a plan view showing a main configuration of a liquid crystal display device according to still another embodiment of the present invention.

FIG. 6 is an enlarged plan view showing a deformed portion of the same.

FIG. 7 is an exploded perspective view showing the entire configuration of the liquid crystal display device.

FIG. 8 is a sectional view showing a part in an assembled state of the same.

FIG. 9 is a perspective view showing a conventional liquid crystal display device.

FIG. 10 is a perspective view showing the same liquid crystal display device.

[Explanation of symbols]

 13 Liquid crystal cell 13a Array substrate 13b Opposite substrate 15 Bezel 15a Opening 15aa Middle part 15ab Four corners 15A Convex curve 15B Concave curve 15C Waveform curve 17 Tape as fixing element 19 Screw as fixing element

Claims (5)

[Claims] 1. A liquid crystal cell in which liquid crystal is sealed between two substrates, a frame having a substantially square opening for visually exposing the surface of the liquid crystal cell and covering the periphery of the surface, and the side of the opening is A liquid crystal display device comprising: a curved bezel; and a fixing element acting in a direction in which the bezel is brought into close contact with the surface of the liquid crystal cell. 2. The liquid crystal display device according to claim 1, wherein the side of the opening is formed by a convex curve in which an intermediate portion of the opening projects toward the center with respect to four corners. 3. The liquid crystal display device according to claim 1, wherein the side of the opening is formed by a concave curve in which an intermediate portion of the opening is depressed from four corners toward the center. 4. The liquid crystal display device according to claim 1, wherein the side of the opening is formed by an uneven waveform curve. 5. The liquid crystal display device according to claim 1, wherein a pair of long sides of the opening are formed by an uneven waveform curve, and a pair of short sides are formed by a concave curve.