JP3013533U - LCD unit mounting structure - Google Patents

Abstract

(57) [Summary] [Object] With regard to an LCD unit mounting structure, it is an object to provide an LCD unit mounting structure in which a liquid crystal display panel can be attached / detached to / from a printed circuit board together with an anisotropic conductive connector very easily. . [Structure] A liquid crystal display panel 1 and an anisotropic conductive connector 2 which is brought into contact with an electrode array 11 of the liquid crystal display panel 1 are housed in a supporting frame 3, and the flexibility provided in the supporting frame 3 is reduced. The tongue piece 31 is inserted into the fixing hole 51 of the printed board P. At this time, the tongue piece 31 enters into the fixing hole 51 while the introducing portion 33 provided at the tip end of the tongue piece 31 comes into contact with the protruding portion 52 projecting from the inner surface of the fixing hole 51, and thus the tongue piece 31. The receiving hole 32 at the intermediate position and the protruding portion 52 on the inner surface of the fixing hole 51 are fitted to each other, so that the support frame 3 is fixed to the printed circuit board P.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for an LCD unit.

[0002]

[Prior art]

 An LCD unit, which is generally used as a display means of electronic equipment, displays predetermined information by controlling the voltage applied to a plurality of liquid crystal display elements formed on a liquid crystal display panel. For example, I.I. T. An electrode array is formed by arranging a plurality of thin film electrodes made of O (indium oxide) or the like at minute intervals.

When the liquid crystal display panel having such a structure is attached to a print substrate on which a predetermined display control circuit is mounted, it is supported so that an anisotropic conductive connector is brought into contact with the electrode array of the liquid crystal display panel. It is placed inside the frame and this support frame is attached to the printed board.

The anisotropic conductive connector is a conductive material such as nickel embedded in an insulating base material such as styrene rubber so that it is continuous only in the arrangement direction of the liquid crystal display panel and the printed circuit board. With this configuration, the LCD unit can be operated without performing the work of individually connecting the thin film electrodes to the terminals of the printed circuit board.

FIG. 6 is an exploded perspective view of a conventional LCD unit mounting structure using the anisotropic conductive connector, and FIG. 7 is a perspective view of a mounting state by the mounting structure. As shown in FIG. 6, an electrode array 11 is formed on the back surface of the liquid crystal display panel 1, and the anisotropic conductive connector 2 is brought into contact with the electrode array 11 and housed in a support frame 61. Further, the support frame 61 is attached to the printed board P. In this configuration, the support frame 61 is configured to accommodate a transparent resin light guide member 4 on the back surface of the liquid crystal display panel 1 so that the liquid crystal display panel 1 is displaced within the support frame 61. In addition to the prevention, the reference light from the illumination means (not shown) is guided to the back surface of the liquid crystal display panel 1.

A plurality of L-shaped tongues 62 in plan view are provided on the back side of the support frame 61 facing the printed circuit board P, and a fixing groove 71 and a fixing member corresponding to the tongues 62 are fixed. The slit 72 is provided on the printed circuit board P, and the tongue piece 62 of the support frame 61 accommodating the liquid crystal display panel 1 and the anisotropic conductive connector 2 is fixed to the fixed groove 71 or the fixed slit 72 formed on the printed circuit board P. After insertion, as shown in FIG. 7, the tip portion of the tongue piece 62 protruding to the back surface of the printed board P is bent in the plate thickness direction of the tongue piece 62 by using a tool such as radio pliers. It is fixed to P.

[0007]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional configuration, the work of extremely low efficiency, in which the tongues 62 are bent one by one to fix the support frame 61 to the printed circuit board P, is inevitable.

Further, the anisotropic conductive connector 2 is simply arranged in the support frame 61 so as to abut the electrode array 11 of the liquid crystal display panel 1, and the support frame 61 is attached to the print substrate P. During the work, the liquid crystal display panel 1 may be moved from the normal contact position with respect to the electrode array 11 to cause malfunction of the liquid crystal display panel 1.

Moreover, when a malfunction is found due to the displacement of the anisotropic conductive connector 2, the bent portions of all the tongue pieces 62 are restored again using a tool, and then the support frame 61 is printed. After the removal from the substrate P, the work of the complicated procedure of bending the tongue piece again was forced.

The present invention has been proposed in view of the above conventional circumstances, and provides an LCD unit mounting structure that allows the liquid crystal display panel together with an anisotropic conductive connector to be attached to and detached from a printed circuit board very easily. The purpose is to do.

[0011]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention employs the following means. That is, as shown in FIGS. 1 to 5, a support frame 3 accommodating a liquid crystal display panel 1 and an anisotropic conductive connector 2 abutting against an electrode array 11 of the liquid crystal display panel 1 is attached to a printed circuit board P. In the mounting structure of the LCD unit, the support frame 3 has a flexible tongue piece 31 protruding toward the printed circuit board P and a receiving hole formed at an intermediate position of the tongue piece 31. 32 and an introducing portion 33 that is bent at an end position of the tongue piece 31 with respect to the receiving hole 32 and is bent at an acute angle with the protruding direction of the tongue piece 31, while the printed circuit board P is attached to the tongue piece 31. The corresponding fixing hole 51 and the protrusion 52 projecting from the inner surface of the fixing hole 51 in the direction corresponding to the bending direction of the tongue piece 31 in the introduction portion 33 are provided, and the tongue piece 31 is inserted into the fixing hole 51. Inserting and receiving hole 32 A configuration which is adapted to fit the protrusion 52.

In the above, the notch 34 is formed from the base end portion of the tongue piece 31 toward the front surface of the support frame 3, or the support frame 3 faces the printed board P that is in parallel with the tongue piece 31. The printed board P may be provided with a small hole 53 corresponding to the guide claw 35 in addition to the guide claw 35 protruding.

[0013]

[Action]

 According to the above configuration, when the support frame 3 is moved toward the printed circuit board P so that the tongue piece 31 corresponds to the fixing hole 51, the introducing portion 33 of the tongue piece 31 causes the protruding portion in the fixing hole 51. When the support frame 3 is further pushed in in this state by abutting against the tip of the tongue 52 (FIG. 3 (a)), the introduction portion 33 is pressed by the projection 52, whereby the tongue piece 31 bends in the pressing direction. While entering the fixing hole 51 [Fig. 3 (b)]. When the supporting frame 3 is fully pushed in this way, the receiving hole 32 of the tongue piece 31 reaches the projection portion 52, and the receiving hole 32 and the projection portion 52 are fitted by the elastic restoring force of the tongue piece 31. As a result, the supporting frame 3 is positioned and fixed to the printed circuit board P [Fig. 3 (c)].

In order to remove the support frame 3 from the printed circuit board P, the tongue piece 31 is pushed by pressing the introducing portion 33 of the tongue piece 31 projecting from the back surface of the printed circuit board P 1 in the projecting direction of the projecting portion 52. It suffices to bend 31 and separate the protrusion 52 from the receiving hole 32.

In the above-described configuration, in the configuration in which the notch 34 extending from the base end portion of the tongue piece 31 toward the front surface of the support frame 3 is formed, the tongue piece 31 is easily bent during the above-described mounting procedure, and the support frame 3 due to the bending is formed. Deformation of the anisotropic conductive connector 2 can be prevented, and the displacement of the anisotropic conductive connector 2 in the support frame 3 can be prevented.

Further, when the guide claw 35 and the small hole 53 corresponding to the guide claw 35 are provided, it is possible that the guide claw 35 enters the small hole 53 before the tongue piece 31 is completely inserted into the fixing hole 51. As a result, the tongue piece 31 is prevented from being displaced from the fixing hole 51 during the attachment work, and the guide claw 35 covers the gap position between the support frame 3 and the printed circuit board P before the attachment is completed. Therefore, the anisotropic conductive connector 2 does not fall off.

[0017]

【Example】

 Hereinafter, the present invention will be described in more detail based on embodiments. FIG. 1 is an exploded perspective view of an embodiment according to the present invention, FIG. 2 is a vertical side view of the same, and FIG. 3 is an enlarged vertical side view of an essential part showing the mounting procedure.

In this embodiment as well, the liquid crystal display panel 1, the anisotropic conductive connector 2, and the light guide member 4 which compose the LCD unit are conventionally well-known structures, and the description of their concrete structures is omitted. In addition, the same reference numerals are used for each part in the following description.

As shown in FIG. 1, the support frame 3 used in this embodiment includes a rectangular front plate 3a having an opening 30 and upper, lower, left, and right connected to four sides of the front plate 3a. Side plates 3b to 3e, of which a pair of left and right locking pieces 37 whose front end portions are bent downward are projected on the back side of the upper plate 3b, and left and right side plates are formed on the lower plate 3c. A pair of tongue pieces 31 are projected.

The tongue piece 31 is provided with a rectangular receiving hole 32 penetrating in the plate thickness direction at an intermediate position thereof, and further, the tongue piece 31 is projected at a tip end position beyond the receiving hole 32. There is provided an introducing portion 33 bent at an acute angle downward from the direction. Further, the lower plate 3c is formed with a notch 34 extending toward the front plate 3a along an extension line of the side edges of the tongues 31 facing each other.

On the other hand, on the printed circuit board P, a locking groove 57 is formed in which the end surface of the printed circuit board P is recessed in the surface direction corresponding to the pair of locking pieces 37, and a corresponding tongue piece 31 is provided. A fixing hole 51 penetrating the printed substrate P is provided. Further, a protrusion 52 is provided on the inner surface of the fixing hole 51 so as to coincide with the bending direction of the introduction portion 33 of the tongue piece 31 and protrude downward from the upper inner surface.

The liquid crystal display panel 1 is accommodated in the support frame 3 so that the display area corresponds to the opening 30, and the anisotropic conductive connector 2 is provided on the back side of the liquid crystal display panel 1. The tongue piece 31 is arranged so as to be in contact with the electrode array 11 formed along the lower side and to be in close contact with the lower plate 3c provided with the protruding tongue piece 31. Further, a transparent resin light guide member 4 for guiding the reference light to the display area is arranged on the back surface of the liquid crystal display panel 1 so as to be laminated on the back surface of the liquid crystal display panel 1. The lower plate 3c at the position of the left and right cuts 34 is slightly bent so as to incline upward toward the printed circuit board P so that the anisotropic conductive connector 2 can be stably arranged. I have to.

In order to mount the support frame 3 on the printed circuit board P, first, the locking piece 37 is locked in the locking groove 57 to position the mounting position of the support frame 3 on the printed circuit board P. To do. As a result, the lead-in portion 33 of the tongue piece 31 provided on the lower plate 3c of the support frame 3 comes into contact with the tip of the protruding portion 52 of the fixing hole 51, as shown in FIG. 3 (a).

Further, when the support frame 3 is rotated in a direction of pushing the tongue piece 31 into the fixing hole 51 with the locking piece 37 locked in the locking groove 57 as a fulcrum, as shown in FIG. 3B. As described above, the lead-in portion 33 is pressed downward by the projection portion 52, whereby the tongue piece 31 bends in the pressing direction and enters the fixing hole 51.

At this time, since the lower plate 3c of the support frame 3 is provided with the notch 34, the tongue piece 31 is easily bent, and the lower plate 3c has a desired shape regardless of the bending operation of the tongue piece 31. Therefore, there is no concern that the anisotropic conductive connector 2 will be displaced in the support frame 3 or will fall off.

When the support frame 3 is fully pushed in this way, as shown in FIG. 3 (c), the receiving hole of the tongue piece 31 reaches the projection 52, and the elastic restoring force of the tongue piece 31 is reached. As a result, the receiving hole 32 and the protrusion 52 are fitted to each other, whereby the support frame 3 is positioned and fixed to the printed board P as shown in FIG.

On the contrary, in order to remove the support frame 3 from the printed circuit board P, the projecting portion 52 is detached from the receiving hole 32 by pressing the introducing portion 33 downward and bending the tongue piece 31. Follow the above steps in reverse order.

As described above, in this embodiment, the supporting frame 3 can be attached to the printed circuit board P by a series of operations without using any tool, and the supporting frame 3 can be mounted in an extremely short time compared to the conventional case. It can be attached to the printed circuit board P.

Moreover, there is no fear that the anisotropic conductive connector 2 will be displaced from its intended position, and even if the liquid crystal display panel 1 malfunctions due to displacement, the support frame 3 can be easily removed from the printed circuit board P. It can be removed, which has the effect of dramatically improving work efficiency.

Further, FIG. 4 is an exploded perspective view of another embodiment according to the present invention, and FIG. 5 is an enlarged vertical side view of an essential part showing its mounting procedure. As shown in FIG. 4, the liquid crystal display panel 1 to which this embodiment is applied is provided with a pair of electrode arrays 11 along both upper and lower sides on the back side thereof, and accordingly, two anisotropic conductive connectors are provided. I am using 2.

The supporting frame 3 for accommodating the liquid crystal display panel 1 and the anisotropic conductive connector 2 has a pair of left and right tongues 31 on the upper and lower side plates 3b and 3c, respectively, as shown in FIGS. The upper and lower side plates 3b and 3c are provided with notches 34 extending toward the front plate 3a of the support frame 3 along the extension lines of the left and right side edges of each tongue piece 31, respectively. . Further, a pair of left and right guide claws 35 are provided on the upper and lower both side plates 3b and 3c so as to be juxtaposed with each tongue piece 31 with a notch 34 therebetween.

On the other hand, a fixed hole 51 corresponding to each of the tongues 31 is formed in the printed circuit board P to which the support frame 3 is attached, and a small hole 53 corresponding to the guide claw 35 is formed. ing. In this embodiment, the tongue piece 31 protruding from the upper plate 3b of the support frame 3 is positioned and fixed at the upper edge of the printed circuit board P, and therefore the fixing hole 51 corresponding to the tongue piece 31 is formed. Apparently has a shape in which a pair of notches 51a appear only at intervals that match the width dimension of the protrusion 52.

In order to perform the mounting work according to this embodiment, first, after the liquid crystal display panel 1, the anisotropic conductive connector 2 and the light guide member 4 are housed in the support frame 3 at predetermined positions, As shown in FIG. 5 (a), the support frame 3 is moved in parallel while being aligned with the printed circuit board P so that the tongue piece 31 and the fixing hole 51 and the guide claw 35 and the small hole 53 correspond to each other. . At this time, the introduction portion 33 of the tongue piece 31 comes into contact with the tip of the protrusion 52.

Further, as shown in FIG. 5B, when the support frame 3 is moved toward the printed circuit board P, the introduction portion 33 is pressed by the protrusion 52, so that the tongue piece 31 is bent. And the guide claw 35 enters the small hole 53.

In this state, the support frame 3 is positioned in the surface direction of the printed circuit board P by the guide claws 35, and for example, the elastic restoring force of the tongue piece 31 is strong and even if it is difficult to push the support frame 3, it is erroneous. As a result, the support frame 3 is not displaced from the predetermined position and can be pushed in stably. Moreover, since the gap between the support frame 3 and the printed circuit board P is covered by the guide claws 35, the anisotropic conductive connector 2 does not fall off the support frame 3.

After that, as shown in FIG. 5C, when the support frame 3 is pushed in sufficiently, the elastic restoring force of the tongue piece 31 causes the receiving hole 32 and the protrusion 52 to be fitted to each other, so that the printed circuit board P is supported. The attachment of the support frame 3 is completed.

As described above, in this embodiment, since the tongue piece 31 is inserted into the fixing hole 51 and the guide claw 35 is inserted into the small hole 53 at the same time, the support frame 3 is directed toward the printed circuit board P. The support frame 3 becomes stable when it is pushed in. In particular, the configuration in which the two anisotropic conductive connectors 2 are interposed between the liquid crystal display panel 1 and the printed circuit board P as described above is useful for preventing displacement of both anisotropic conductive connectors 2. is there.

In addition, since the space between the support frame 3 and the printed circuit board P is covered by the guide claws 35 during the mounting work as described above, the anisotropic conductive connector 2 does not fall off and the workability is improved. To be

Note that the present invention is not limited to the above-described embodiment, and for example, the tongue piece may be formed so as to project from the support frame toward the print substrate. It may be projected on the plates 3d and 3e. Furthermore, it is not necessary for any one of the outer edges of the support frame to be located at the peripheral edge of the printed board, and the support frame can be attached by forming a fixing hole or a small hole in the central portion of the printed board.

[0040]

[Effect of device]

 As described above, according to the present invention, it is only necessary to relatively move the support frame and the printed circuit board so that the tongue piece projecting from the support frame is inserted into the corresponding fixing hole of the printed circuit board. The LCD unit can be attached to a printed circuit board, no tools are required for the attachment, the time required for attachment is shortened, and work efficiency is dramatically improved.

In addition, it is possible to prevent malfunctions due to displacement of the anisotropic conductive connector in the support frame, and even if malfunctions occur, it is extremely easy to remove and remount the support frame. Can be installed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment according to the present invention.

FIG. 2 is a vertical sectional side view of an embodiment according to the present invention.

FIG. 3 is an enlarged vertical sectional side view of an essential part showing a mounting procedure of an embodiment according to the present invention.

FIG. 4 is an exploded perspective view of another embodiment according to the present invention.

FIG. 5 is an enlarged vertical cross-sectional side view of essential parts showing a mounting procedure of another embodiment according to the present invention.

FIG. 6 is an exploded perspective view of a conventional example.

FIG. 7 is a perspective view of a conventional example in an attached state.

[Explanation of symbols]

 1 Liquid Crystal Display Panel 2 Anisotropic Conductive Connector 3 Support Frame 11 Electrode Array 31 Tongue Piece 32 Receiving Hole 33 Introducing Section 34 Notch 35 Guide Claw 51 Fixing Hole 52 Protrusion 53 Small Hole P Printed Circuit Board

Claims (3)

[Scope of utility model registration request] 1. An LC in which a support frame containing a liquid crystal display panel and an anisotropic conductive connector in contact with an electrode array of the liquid crystal display panel is attached to a printed circuit board.
In the mounting structure of the D unit, the support frame has a flexible tongue protruding toward the printed circuit board, a receiving hole formed at an intermediate position of the tongue, and a tongue more than the receiving hole. At the tip position of the tongue, the printed board is provided with a fixing hole that is bent at an angle that makes an acute angle with the protruding direction of the tongue, and a fixing hole corresponding to the tongue and a tongue in the introducing section from the inner surface of the fixing hole. An LCD unit mounting structure, comprising: a protrusion protruding in a direction corresponding to a bending direction of the piece, the tongue being inserted into the fixing hole, and the protrusion fitted into the receiving hole. 2. The LCD unit mounting structure according to claim 1, wherein a notch is formed from the base end portion of the tongue piece toward the front surface of the support frame. 3. The support frame according to claim 1, wherein the support frame includes a guide claw protruding toward the printed circuit board in parallel with the tongue piece, and the printed circuit board includes a small hole corresponding to the guide claw. LCD unit mounting structure.