JP2002149082A - General purpose block for mounting liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide general purpose blocks for mounting a liquid crystal display device in which optical precision and asseblability are improved. SOLUTION: Parallel grooves are respectively provided to inner wall surfaces 12, 22, 32 and 42 and outer wall surfaces 13, 23, 33 and 43, which are bent at a right angle, of general purpose blocks A10, B20, C30 and D40 having a flat and approximately L shape. The grooves of the inner wall surfaces are engaged to a light transmission plate 51 to constitute a back light unit 50. The surfaces 12, 22, 32 and 42 on the plate 51 hold a liquid crystal panel 60. A binding member 54 is provided on the peripheries of the blocks A10, B20, C30 and D40 to engage with the grooves of the surfaces 13, 23, 33 and 43 and the blocks A10, B20, C30 and D40 are respectively joined together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a general-purpose block for mounting a liquid crystal display device.

[0002]

2. Description of the Related Art In recent years, various thin and high-performance liquid crystal display devices have been widely used in health appliances such as mobile phones, game machines, and electronic thermometers. Such conventional liquid crystal display devices have different dimensions in accordance with their respective product specifications, and when they are mounted on the device body, dedicated mounting members are required. Therefore, it was necessary to prepare a production die for each mounting member, and it was difficult to make the management complicated.

In such a background, a versatile mounting member that can mount a plurality of different electronic components with a single type of mounting member has been developed, for example, in Japanese Patent Application Laid-Open No. H08-208,878.
There is a general-purpose block for mounting electronic components disclosed in Japanese Patent Publication No. 250873. This case will be described with reference to the drawings. FIG. 13 is an external perspective view of this general-purpose block, and FIG.
FIG. 15 is a plan view of various modes for attaching a liquid crystal panel using the general-purpose block.

In this general-purpose block for mounting electronic components, as shown in FIG. 13, a block body 101 is formed symmetrically on one side and the other side in the thickness direction, and a first body is formed on each side.
The recesses 103, 104 are provided with a second recess 106 between the first recesses 103 and 104, and a fastening hole 105 penetrating in the thickness direction near the first recess. As shown in FIG. 14, for example, a liquid crystal panel 1 which is a first electronic component to be mounted.
15 engages the first recess 103 with the plurality of corners,
When a plurality of block main bodies 101 are screwed in the fastening holes 105 and supported on the control board 117, the respective block main bodies 101 are arranged in an arbitrary orientation as shown in FIG. The pitch between the fastening holes 105, 105 can be set as P1 to P6 according to the mounting space of the liquid crystal panel 115, and the second concave part 106 also provided in the block body 101 is the second electronic component. The backlight unit can be tied together and supported at the same time.

[0005]

However, in the above-mentioned general-purpose block, four general-purpose blocks 100 are screwed to the control board 117 as shown in FIG. In addition, it is difficult to attach general-purpose blocks with high accuracy. In addition, the control board is easily affected by warpage and distortion. Therefore, due to these influences, deformation of mounting parts is induced, and especially when a backlight unit using an LED light source, which is currently mainstream, is employed, optical accuracy such as light incidence, light guide, diffusion, reflection, and emission is reduced. There is a problem that it cannot be kept enough.

The present invention has been made to solve such a conventional problem, and an object thereof is to provide a general-purpose block for mounting a liquid crystal display device having improved optical accuracy and good assemblability. It is.

[0007]

In order to solve the above problems, the present invention provides a liquid crystal display device having different sizes by using a plurality of block bodies each having an inner wall surface and an outer wall surface bent at right angles. Correspondingly, in a general-purpose block for mounting a liquid crystal display device in which the inner wall surface is engaged with and supported by a plurality of corners of the liquid crystal display device, a parallel groove is provided on the outer wall surface of the block body. The block main body is fastened by being wound around the outer periphery of the block main body while engaging a fastening member in the groove.

According to a second aspect of the present invention, in the configuration of the first aspect, a parallel groove is provided on an inner wall surface of the block body, and the light guide plate is supported by engaging with the parallel groove. Features.

According to a third aspect of the present invention, in the first aspect of the present invention, an engaging portion of an LED substrate is provided at one end of the block body, and the engaging portion is provided with an LED. It is characterized by supporting a substrate.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, a hook portion is provided on an inner wall surface of the block main body, and the control circuit board is attached to the hook portion by the hook portion. It is characterized by being locked.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a general-purpose block A for mounting a liquid crystal display device according to a first embodiment of the present invention. FIG. 2 is a perspective view of a general-purpose block B adjacent to the general-purpose block A and symmetric with the general-purpose block A. FIG. 3 shows a general-purpose block C which is different from the general-purpose block A adjacent to the general-purpose block B.
FIG. 4 is a perspective view of a general-purpose block C which is adjacent to the general-purpose block C and which is symmetrical with the general-purpose block C. FIGS. 5, 6, and 7 are plan views showing a procedure for assembling the liquid crystal display device using the general-purpose block according to the first embodiment, and FIG. 8 is a perspective view of the same. FIG. 9 is a cross-sectional view showing a main part cross section at the time when the assembly of FIG. 8 is completed, and FIG. 10 is a cross-sectional view showing a main part cross section orthogonal to the cross section of FIG.

First, the configuration of a general-purpose block for mounting a liquid crystal display device according to a first embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIGS. (A), (b), and (c) in FIGS. 1 and 2 are perspective views of the same general-purpose block viewed from different directions. In FIG. 1, 10
Is one of four types of general-purpose blocks, and is an arm-shaped general-purpose block A having an approximately L-shaped upper and lower surface, an inner wall surface 12 bent at a right angle, an outer wall surface 13 bent at the same right angle, and both end surfaces.
It is. Reference numeral 11 denotes a block main body formed of a synthetic resin or the like. Reference numeral 14 denotes a parallel groove formed on the outer wall surface 13 of the block body 11 in parallel with the upper and lower surfaces and over both ends of the arm. Reference numeral 15 denotes a step formed at one end of the parallel groove 14 as an engaging portion for engaging the LED substrate. Reference numeral 16 denotes a parallel groove formed on the inner wall surface 12 of the block main body 11 in parallel with the upper and lower surfaces and over both ends of the arm. Reference numeral 17 denotes a hook portion which is formed so as to protrude downward from the inner wall surface 12 opposite to the side where the step portion 15 is provided and serves as a locking portion for locking the control circuit board. 17a and inner surface 17
Step 17b and Step 17b horizontally projecting inward from a
And a lower slope 17c.

In FIG. 2, reference numeral 20 denotes a general-purpose block A10.
The general-purpose block B is formed in the same manner as that of the general-purpose block A10 and has a symmetrical shape with respect to the general-purpose block A10. 21 is a block body, 24 is a parallel groove formed on the outer wall surface 23 of the block body 21, 25 is a step formed at one end of the parallel groove 24, 26
Are parallel grooves formed on the inner wall surface 22 of the block body 21;
Reference numeral 7 denotes a hook formed so as to protrude below the inner wall surface 22 opposite to the step 25.

In FIG. 3, reference numeral 30 denotes a general-purpose block A10.
This is a general-purpose block C formed in the same manner as that of the general-purpose block A10 and having the shape in which the step portion 23 of the outer wall surface 33 is eliminated from the general-purpose block A10. 31 is a block body, 34 is a block body 3
1 is a parallel groove formed in the outer wall surface 33, 36 is a parallel groove formed in the inner wall surface 32 of the block body 31, and 37 is a hook portion formed to protrude below the inner wall surface 32 on one side.

In FIG. 4, reference numeral 40 denotes a general-purpose block A10.
Similarly to the above, the general-purpose block C30 is a general-purpose block D formed in a symmetrical shape. 41 is a block body, 44 is a parallel groove formed on the outer wall surface 43 of the block body 41, 46 is a parallel groove formed on the inner wall surface 42 of the block body 41, and 47 is formed so as to protrude below the inner wall surface on one side. It is a hook part.

Next, a procedure for assembling a liquid crystal display device using the general-purpose block according to the present embodiment will be described. In FIG. 5, reference numeral 51 denotes a light guide plate as a backlight member of the liquid crystal display device. 52 is LE as a backlight light source
D and 53 are LED boards on which the LEDs 52 are mounted. First, as shown in FIG. 5, the general-purpose blocks A10, B20, C
40, D30 into the respective parallel grooves 16, 26, 36, 4
6 is assembled so as to engage with each corner of the light guide plate 51.

Next, the LED board 53 is inserted between the steps 15 and 25 of the general-purpose blocks A10 and B20 so that the light-emitting portion of the LED 52 faces one side surface of the light guide plate 51. Proceed to the next step while keeping this state. In FIG. 7, reference numeral 50 denotes a backlight unit;
Is a tape-shaped fastening member wound around the parallel grooves 14, 24, 34, and 44 of the general-purpose blocks A10, B20, C30, and D40 and tied from the outside.

As the fastening member 54, for example, a tape made of engineering plastic such as polypropylene, a ring-shaped tape made of a heat-shrinkable member, or a ring-shaped tape made of rubber can be used. When wrapping a single tape, both ends are bonded by parallel grooves of any of the general-purpose blocks. For example, a hot-melt adhesive is suitable for adhesion, but is not necessarily limited to this. As shown in FIG. 6, the light guide plate 5 is
1 for each general-purpose block A10, B20, C30, D
The LED 40 and the LED substrate 53 are integrally assembled, and a strong backlight unit shown in FIG. 7 is completed.

The following procedure will be described with reference to FIG. 8, reference numeral 60 denotes a liquid crystal panel, 50 denotes a backlight unit, and 70 denotes a control circuit board. As shown in FIG. 8, the liquid crystal panel 60 is connected to the inner wall surfaces 12, 2 of the general-purpose blocks A10, B20, C30, D40 of the backlight unit 50.
2, 32, and 42 and the light guide plate 51. In this state, modularization of the liquid crystal display device (the liquid crystal panel 60 including the backlight unit 50) is achieved.

Next, the modularized liquid crystal display device is assembled on the control circuit board 70. At this time, the slopes of the hook portions 17 and 27, and 37 and 47 of the general-purpose blocks A10 and B20, C30 and D40 are used. Parts 17c and 27c, 37
The liquid crystal display device is pushed in such that the control circuit board 70 is held between c and 47c. Then, each hook portion opens by the action of each slope, and each step portion 17b, 27b, 37
The control circuit board 70 is locked at b and 47b. FIG. 9 and FIG. 10 show the main parts in a state where the above assembly is completed.

Next, effects of the first embodiment will be described. Before being incorporated into the control circuit board 70, the liquid crystal panel 60 with the backlight unit 50 is once firmly integrated via the general-purpose block, so that the liquid crystal panel 60 with the backlight unit 50, that is, the liquid crystal display device Optical accuracy is improved. Since the liquid crystal display module is attached to the control circuit board 70 using the hooks protruding from the general-purpose block, even if the control circuit board 70 is warped, the liquid crystal panel 60 is not affected by distortion due to the attachment. Also, when assembling liquid crystal display devices having different sizes, the same general-purpose block can be used as it is. As long as the control circuit board 70 on which the liquid crystal panel 60 is mounted has a locking portion formed by an edge or a hole or a notch for locking the hook portion, it can be mounted on a control circuit board of any shape.

Next, the configuration and operation of a general-purpose block for mounting a liquid crystal display device according to a second embodiment will be described. In FIG. 11, reference numeral 80 denotes a general-purpose block B formed in the same manner as the general-purpose block B20 according to the first embodiment. Reference numeral 85 denotes a rectangular parallelepiped recess formed at one end of the general-purpose block B80 as an LED board engaging portion. The general-purpose block B80 and the general-purpose block B20 have the same shape except that the shape of the LED board engaging portion is different, and therefore detailed description is omitted.

The general-purpose block A uses a general-purpose block A (not shown) symmetrical to the general-purpose block B80, and the general-purpose blocks C and D use the same general-purpose blocks C30 and D40 of the first embodiment. When assembling a liquid crystal display device using the general-purpose block according to the second embodiment, first, each general-purpose block is incorporated into the light guide plate. Perform while inserting. Subsequent steps are the same as those in the first embodiment.

Next, the effect of the general-purpose block for mounting a liquid crystal display device according to the second embodiment will be described. The dimensions of the recesses 85 and the like can be formed according to the dimensions of the LED board so as not to cause backlash. At that time, the LED boards are fixed at the stage where the general-purpose blocks A and B are assembled. There is an advantage that the work is stable when moving to the assembling work, and the work can be easily performed.

Next, the structure and operation of a general-purpose block for mounting a liquid crystal display device according to a third embodiment will be described. In FIG. 12, reference numeral 90 denotes a general-purpose block B formed in the same manner as the general-purpose block B20 according to the first embodiment, and 95 denotes a two-way as an LED board engaging portion formed at one end of the general-purpose block B90. Is a rectangular parallelepiped concave portion that is open to the side. General-purpose block B90 and general-purpose block B80
Since the shape of the general-purpose block B20 of the first embodiment is the same as that of the general-purpose block B20 except that the shape of the LED board engaging portion is different, detailed description is omitted. General-purpose block A has general-purpose block B90
A general-purpose block A (not shown) having a shape symmetrical with the general-purpose block C and the general-purpose block C30 according to the first embodiment are included in the general-purpose blocks C and D.
And the same as D40.

When assembling a liquid crystal display device using a general-purpose block according to the third embodiment, first, each general-purpose block is incorporated into the light guide plate. LED
This is performed while inserting the substrate from above. Subsequent steps are the same as those in the first embodiment.

Next, the effect of the general-purpose block for mounting a liquid crystal display device according to the third embodiment will be described. In assembling the liquid crystal display device, there is a degree of freedom in assembling the LED board, and the LED board may be incorporated at any stage.

In each of the above embodiments, LE
A general-purpose block in which the D substrate is not incorporated may have the same shape as the one in which the LED substrate is incorporated. In this case, the number of types of general-purpose blocks can be reduced, so that there is an advantage that component production and component management are simplified.

[0029]

As described above, according to the present invention,
As a liquid crystal display device attachment member, a general L-shaped flat block having a parallel groove as a light guide plate engaging portion on the inner wall surface and a parallel groove as a fastening member engaging portion on the outer wall surface was adopted. A light guide plate is engaged with the parallel groove serving as the light guide plate engaging portion, and a liquid crystal panel is engaged with the inner wall surface on the light guide plate, and a fastening member engaged with the parallel groove serving as the fastening member engaging portion is used. As a result, the general-purpose blocks can be firmly bound together, and modularization of the liquid crystal display device (liquid crystal panel including the backlight unit) has been achieved with high accuracy.

Further, since the general-purpose block is provided with the engagement portion of the LED substrate, the general-purpose block holds the light guide plate and simultaneously holds the LED substrate, thereby improving the optical accuracy of the LED type backlight unit.

Further, since the hook portion formed integrally with the general-purpose block is used when the liquid crystal panel is mounted on the control circuit board, the number of assembling steps can be reduced, and the control circuit board is warped and the general-purpose block is deformed due to assembly. Does not affect the liquid crystal display module.

[Brief description of the drawings]

FIG. 1 is a perspective view of a general-purpose block for mounting a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a general-purpose block for mounting the liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a general-purpose block for mounting the liquid crystal display device according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a general-purpose block for mounting the liquid crystal display device according to the first embodiment of the present invention.

FIG. 5 is a plan view illustrating a method of assembling a liquid crystal display device using a general-purpose block according to the first embodiment of the present invention.

FIG. 6 is a plan view illustrating a method for assembling a liquid crystal display device using a general-purpose block according to the first embodiment of the present invention.

FIG. 7 is a plan view illustrating a method of assembling a liquid crystal display device using a general-purpose block according to the first embodiment of the present invention.

FIG. 8 is a perspective view illustrating a method for assembling a liquid crystal display device using a general-purpose block according to the first embodiment of the present invention.

FIG. 9 is a side cross-sectional view showing a main part when the assembly in FIG. 8 is completed.

FIG. 10 is a side sectional view showing a main part when the assembly in FIG. 8 is completed.

FIG. 11 is a perspective view showing a general-purpose block according to a second embodiment of the present invention.

FIG. 12 is a perspective view showing a general-purpose block according to a third embodiment of the present invention.

FIG. 13 is a perspective view showing a conventional general-purpose block.

FIG. 14 is a plan view showing a mode in which a liquid crystal panel is mounted using a conventional general-purpose block.

FIG. 15 is a plan view showing various forms of attaching a liquid crystal panel using a conventional general-purpose block.

[Explanation of symbols]

10 General-purpose block A 11, 21, 31, 41 Block body 12, 22, 32, 42 Inner wall surface 13, 23, 33, 43 Outer wall surface 14, 24, 34, 44, 16, 26, 36, 46 Parallel groove 15, 25 step portion 17, 27, 37, 47 hook portion 20, 80, 90 general-purpose block B 30 general-purpose block C 40 general-purpose block D 51 light guide plate 52 fastening member 53 LED substrate 60 liquid crystal panel 70 control circuit substrate 85, 95 concave portion

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H05K 7/12 H05K 7/12 L (72) Inventor Tsutomu 5-21-15 Mitake, Morioka-shi, Iwate Citizen Co., Ltd. Iwatenai F term (reference) 2H089 HA40 JA10 QA02 QA16 4E353 AA07 AA16 AA17 AA18 BB02 BB05 CC01 CC13 CC14 CC16 CC32 CC36 DD05 DD08 DD11 DR02 DR22 DR29 DR32 DR34 DR36 DR44 DR53 DR56 DR57 GG06 GG09 GG16 GG20 GG20 GG20 GG20 KK10

Claims (4)

[Claims] 1. A liquid crystal display device having a plurality of block bodies each having an inner wall surface and an outer wall surface bent at a right angle. In a general-purpose block for mounting a liquid crystal display device, which is adapted to be engaged and supported, a parallel groove is provided on an outer wall surface of the block body, and the block member is wound around the outer periphery of the block body while a fastening member is engaged with the parallel groove. A general-purpose block for mounting a liquid crystal display device, wherein the block bodies are fastened together. 2. The general-purpose block for mounting a liquid crystal display device according to claim 1, wherein a parallel groove is provided on an inner wall surface of said block main body, and said light guide plate is supported by being engaged with said parallel groove. 3. The liquid crystal display according to claim 1, wherein an engaging portion of the LED substrate is provided at one end of the block main body, and the LED substrate is supported by the engaging portion. General-purpose block for mounting equipment. 4. The liquid crystal display device according to claim 1, wherein a hook portion is provided on an inner wall surface of the block body, and the control circuit board is locked by the hook portion. General-purpose block for mounting.