JP3296160B2 - Display unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display panel which requires a backlight, a backlight unit, and a flexible printed circuit board mounted with an integrated circuit for driving the display panel and connected to the display panel. And a liquid crystal display unit.

[0002] Display panels are widely used for displaying various terminal devices, portable video cameras, and car navigators, and accordingly, it is required to enhance resistance to external forces such as vibration and impact. Was.

[0003]

2. Description of the Related Art FIG. 7 is an explanatory view schematically showing a liquid crystal display unit. A liquid crystal display unit 1 has a metal frame 2 containing a liquid crystal display panel and a backlight unit. In general, the frame 2 has a configuration in which a frame member 5 that exposes the display surface of the liquid crystal display panel 3 is coupled to a frame member 5 that is in contact with a lower surface peripheral portion of a backlight unit (not shown). It is almost plate-shaped as a whole.

FIG. 8 is a cross-sectional view of a part of a conventional liquid crystal display unit. The back surface of a liquid crystal display panel 3 in which a liquid crystal (not shown) is filled in a gap where a pair of glass substrates 6 and 7 are overlapped is provided. The frame members 4 and 5 of the frame 2 in which the backlight units 8 are superimposed and housed so as to sandwich the backlight units 8, move the plurality of tongue pieces 10 disposed on the side wall 9 of the frame member 5 toward the inside of the frame member 5. As a result, the tongue 10 restrains the outer peripheral portion of the frame member 4 from above.

In FIG. 8, reference numeral 11 denotes a glass substrate 7
A rubber spacer inserted between the glass substrate 7 and the backlight unit 8; a rubber spacer 13 inserted between the backlight unit 8 and the frame member 5; The flexible spacer (not shown), which is a rubber spacer and has a liquid crystal display panel 3 driving IC mounted thereon and connected to the panel 3, is also accommodated in the frame 2.

[0006]

As described above, the conventional frame 2 has a structure in which the frame member 4 is suppressed by the tongue piece 6 with respect to the frame member 5. For this reason, the mechanical strength of the frame body 2 (coupling force between the frame members 4 and 5) becomes insufficient, and when an external force such as vibration or impact is applied, strain stress is generated in the whole or a part of the storage material such as the liquid crystal display panel 3 or the like. For example, a conductor pattern formed on a flexible printed board connected to the liquid crystal display panel 3 may be cut.

The flexible printed board on which the integrated circuit for driving the liquid crystal display panel 3 is mounted has a thickness of 0.1.
A large number of conductor patterns are formed on a polyimide film of about mm, and the width of the conductor pattern formed by etching the conductor foil attached to the polyimide film is, for example, about 18 μm on the input side of the mounted integrated circuit, On the output side
The conductor pattern forming portion is bent and housed in the frame 2.

[0008]

SUMMARY OF THE INVENTION In a display panel having a display panel, a backlight unit, and a flexible printed circuit board mounted with a display panel driving integrated circuit and connected to the display panel in a frame, a pair of frames are provided. The first aspect of the present invention for improving the mechanical strength of the frame made of a member.
The side walls of the first and second frame members are formed so that at least a part thereof overlaps inward and outward directions, and a plurality of tongue pieces that can be plastically deformed inward are formed on the outer side wall. A concave portion is provided on the inner side wall for engaging the plastically deformed tongue piece, and a projection protruding outward is provided on the inner side wall, A contact surface with which the lower surface of the projection abuts is formed on the side wall located at a position where the lower surface of the projection is inserted and locked in the concave portion by plastic deformation of the tongue. A second aspect of the present invention is that each of the plurality of opposing positions on the side wall of the first and second frame members protrudes outwardly. 1st, 2nd
A tongue piece that is overlapped when the frame members are combined to form the frame body is provided, and a groove is formed in the plurality of coupling members so that the overlapped tongue pieces are fitted in a restrained state. The third aspect of the present invention is that, at each of a plurality of opposing positions on the side wall of the first and second frame members, the first and second frame members protrude outward.
A tongue piece that is overlapped when the second frame member is combined to form the frame body is provided, and the plurality of coupling members are combined by combining the first and second frame members with the plurality of spacers interposed therebetween. When the frame is formed, a groove is formed in which the tongue pieces overlapped with each other are fitted in a restricted state.

As described above, in the display unit of the present invention, the frames formed by the pair of frame members are engaged with each other. Therefore, the mechanical strength of the frame is improved, and the protection of the stored items against external forces such as vibration and impact is improved.

[0010]

FIG. 1 is a schematic view of a frame of a liquid crystal display panel according to a first embodiment of the present invention, and FIG. 2 is an explanatory view of a main part of a frame member constituting the frame of FIG.

In FIG. 1, (a) shows a pair of frame members 22.
And FIG. 23B is a perspective view in which the frame members 22 and 23 are separated, and corresponds to the conventional frame body 2 of the frame 21. Correspond to the frame members 4 and 5.

The frame member 22 has a through hole 24 for exposing the display portion of the liquid crystal display panel, and an L-shaped piece 25 having a coupling hole with the frame member 23 is formed at each of the four corners. Side walls 26 hang down in each case.

The frame member 23 has a through hole 27 for exposing the bottom surface of the backlight unit, and the frame member 2 has four corners.
An L-shaped piece 28 having a connection hole with the frame member 2 is formed.
A side wall 29 stands upright on each of the opposing sides corresponding to the second side wall 26.

The frame members 22 and 23 are formed by pressing a metal sheet and then performing a surface treatment (plating). Although not shown, the frame members 22 and 23 are provided with an extrusion process for improving mechanical strength and improving shape accuracy. A reinforcing member is formed.

In FIG. 2, (a) shows the separated side wall 1
FIG. 3B is a perspective view showing a main part of the side walls 26 and 29. FIG.
FIG. 4 is a perspective view when the main part of FIG. Side wall 26
A plurality of recesses 30 opening upward and outward and projections 31 projecting outward are formed at a plurality of locations, and when the frame members 22 and 23 are overlapped, the side wall 29 located outside the side wall 26 is formed.
In a plurality of locations, a tongue piece 32 facing the concave portion 30 and a concave surface (projection contact surface) 33 facing the projection 31 are formed.

The tongue piece 32 projecting substantially in the horizontal direction can be plastically deformed from the root portion by a notch provided at its lower portion. As shown in FIG. 2 (b), the tip is inserted into the recess 30 by plastic deformation.

Therefore, the frame members 22 and 23 are overlapped so as to sandwich the liquid crystal panel (not shown) and the backlight unit, and all the projections 31 come into contact with the corresponding concave surfaces 33 as shown in FIG. After that, the tip is
When the entire tongue piece 32 is deformed so as to be inserted into the zero,
The frame 21 accommodating the liquid crystal panel and the backlight unit is completed.

FIG. 3 is an explanatory view of a main part of the frame member according to the second embodiment of the present invention, FIG. 4 is an explanatory view of a main part of the frame member according to the third embodiment of the present invention, and FIG. FIG. 6 is an explanatory view of a main part of the frame member in the fourth embodiment, and FIG. 6 is an explanatory view of a main part of the frame member in the fifth embodiment of the present invention.

In FIG. 3, concave portions 37 opening upward and outward are provided at a plurality of locations on the side wall 36 corresponding to the side wall 26.
Is formed, and a projection 38 corresponding to the projection 31 protrudes outward from a central portion of the recess 37 corresponding to the recess 30.
A plurality of tongues 40 facing the recesses 37 are formed at a plurality of locations on the side wall 39 corresponding to the side wall 29, and the lower surface 41 of the cut for forming the tongues 40 corresponds to the concave surface 33, and is provided inside the side wall 39. The protrusion 38 of the positioned side wall 36 comes into contact with the lower surface 41.

When the tongue piece 40 is deformed so that the tip is inserted into the concave portion 37, the side walls 36 and 39 are engaged with each other by the tongue piece 40 and the projection 38. In FIG. 4, concave portions 47 corresponding to the concave portions 30 and opening upward and outward are formed in a plurality of portions of the side wall 46 corresponding to the side wall 26, and a plurality of A pair of tongue pieces 50 facing each other in the longitudinal direction of the side wall 49 and an arc-shaped protrusion 51 extruded inward are formed.

The tongue 50 corresponds to the tongue 40, and the protrusion 5
The upper surface 52 of one corresponds to the lower surface 41. Therefore, if the side wall 49 is positioned outside the side wall 46,
The lower surface of 7 is in contact with the projection upper surface 52. Therefore, the recess 47
When each tongue 50 is deformed so as to be inserted into the inside, the side walls 46 and 49 are locked to each other by the tongue 50 and the projection 51, so that both of the pair of frame members are restrained in the vertical direction. become.

In FIG. 5, (a) is a perspective view showing an external appearance of a main part of the frame, and (b) and (c) are sectional views taken along arrows AA and BB in the perspective views. A frame member 61 corresponding to the frame member 21 is provided with a frame member 62 corresponding to the frame member 22.
A frame member 63 corresponding to the frame member 23;
It is composed of a plurality of engaging members 64 that are connected so that the frames 2 and 63 are sandwiched in the thickness direction of the frame 61, and a plurality of spacers 65 that are sandwiched between the frame members 62 and 63.

A plurality of tongue pieces 67 formed by offset bending are formed at a plurality of locations on the side wall 66 of the frame member 62, and a plurality of locations on the side wall 68 of the frame member 63 are opposed to the tongue piece 67 and offset upwardly bent. A processed tongue piece 69 is formed.

The engaging member 64 formed of resin is formed with a groove 70 into which tongue pieces 67 and 69 which are vertically stacked can be pushed. The height H of the spacer 65 formed of resin is: When the frame members 62 and 63 are overlapped with each other in a predetermined manner, the frame members are sized to be sandwiched by the frame members 62 and 63. However, in this embodiment, the same component is used for the engagement member 64 and the spacer 65. Therefore, the spacer 65 has a U-shaped cross section.

The frame members 62 and 63 and the engagement member 6
The frame 71 using the spacer 4 and the spacer 65 is provided with an engaging member 64.
And the frame members 62 and 63 are connected by the
Both the frame members 62 and 63 are restrained in the vertical direction.

In FIG. 6, the frame 72 is the third frame shown in FIG.
5 and the system of the fourth embodiment shown in FIG. 5 are combined, and the frame 72 is composed of frame members 73 and 74 and an engaging member 75.

The side wall 76 of the frame member 73 corresponding to the frame member 22 is provided with a tongue piece 67 which is bent downward by offset bending.
A concave portion 47 opening upward and outward is provided, and a side wall 76 of the frame member 74 corresponding to the frame member 23 is provided with a tongue piece 69 offset-bent upward and a protrusion 51 extruded inward. Tongue piece 5 plastically deformed to the inside of side wall 76
The engaging member 75 corresponding to the engaging member 64 is formed with a groove 77 into which tongue pieces 67 and 69 that are vertically stacked can be pushed.

Therefore, the frame members 73 and 74 are
As a result, the frame member 73 is locked to the frame member 74 by the tongue 50 and the projection 51.

[0029]

As described above, the display unit according to the present invention has a structure in which a frame is formed by a pair of frame members, and both of the pair of frame members are vertically locked to each other. Therefore, the mechanical strength of the frame itself is improved, and the protection of the display panel and the like housed in the frame is improved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a frame of a liquid crystal display panel according to a first embodiment of the present invention.

FIG. 2 is an explanatory view of a main part of a frame member constituting the frame body of FIG. 1;

FIG. 3 is an explanatory view of a main part of a frame member according to a second embodiment of the present invention.

FIG. 4 is an explanatory view of a main part of a frame member according to a third embodiment of the present invention.

FIG. 5 is an explanatory view of a main part of a frame member according to a fourth embodiment of the present invention.

FIG. 6 is an explanatory view of a main part of a frame member according to a fifth embodiment of the present invention.

FIG. 7 is an explanatory view schematically showing a liquid crystal display unit.

FIG. 8 is a sectional view of a part of a conventional liquid crystal display unit.

[Explanation of symbols]

21, 61, 71 Frame body 22, 23, 62, 63, 72, 73 Frame member 26, 29, 36, 39, 46, 49, 66, 68, 7
5, 76 Side wall 30, 37, 47 Depression 31, 38 Projection 32, 40, 50 Tongue piece 33 Concave surface (contact surface) 41 Lower surface (contact surface) 52 Upper surface (contact surface) 64, 74 Coupling member 65 Spacer 67 , 69 Tongue pressed into coupling member

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasutake Kogoshi 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Co., Ltd. (56) References JP-A-2-27390 (JP, A) Japanese Utility Model 110980 (JP, U) Japanese Utility Model Hei 1-128287 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) G09F 9/00

Claims (4)

(57) [Claims] 1. A display panel, a backlight unit, and a flexible printed circuit board mounted with a display panel driving integrated circuit and connected to the display panel are housed in a frame, and the frame is displayed on the display panel. First to expose the area
A frame member and a second frame member in contact with a peripheral portion of a lower surface of the backlight unit, wherein a side wall of the first and second frame members at least partially overlaps inward and outward directions. A plurality of tongue pieces that are formed and are plastically deformable inward are provided on the outer side wall,
The side wall located on the inside is provided with a concave portion to which the plastically deformed tongue piece is locked, and the side wall located on the inside is provided with a projection protruding outward, and located on the outside. The side wall is formed with a contact surface with which the lower surface of the projection is in contact. The lower surface of the projection is in contact with the lower surface of the tongue in a state where the tip of the tongue is inserted and locked in the concave portion by plastic deformation of the tongue. The display unit is configured to be in contact with the display unit. 2. The display panel, a backlight unit, and a flexible printed circuit board on which a display panel driving integrated circuit is mounted and connected to the display panel are housed in a frame, and the frame is mounted on the display panel. A display unit having a first frame member for exposing a display area, a second frame member contacting a lower peripheral portion of the backlight unit in contact with the first frame member, and a plurality of coupling members for coupling the first and second frame members. And a tongue piece projecting outward and being overlapped when the first and second frame members are combined to form the frame at each of a plurality of opposing positions on the side wall of the first and second frame members. The display unit, wherein a groove is formed in the plurality of coupling members so that the overlapped tongue pieces are fitted in a restricted state. 3. A display panel, a backlight unit, and a flexible printed board on which a display panel driving integrated circuit is mounted and connected to the display panel are housed in a frame, and the frame is displayed on the display panel. First to expose the area
Between the first and second frame members and a plurality of coupling members for coupling the first and second frame members, the second frame member being in contact with a peripheral portion of the lower surface of the backlight unit. A display unit having a plurality of spacers sandwiched between the first and second frame members, wherein the first and second frame members protrude outwardly at each of a plurality of opposing positions of side walls of the first and second frame members. A tongue piece that is overlapped when the frame body is combined is provided, and the first and second coupling members are sandwiched by the first and second spacers.
A display unit, wherein a groove is formed in which the overlapping tongue pieces are fitted in a restricted state by combining the second frame member. 4. The display unit according to claim 3, wherein the same components are used for the plurality of coupling members and the spacer.