JP2004280119A - Liquid crystal display device, method for holding display device, and holding mechanism for display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide technology by which the cost required for a liquid crystal display device can be reduced, technology by which the cost required for the installation thereof can be reduced and technology by which the visibility of the information displayed thereon can be improved. <P>SOLUTION: The two opposite side faces of a casing of the liquid crystal display device are respectively provided with connectors 111 and 112 for input and output of data. The connector 111 and connector 112 of the liquid crystal display devices adjacent to each other are directly connected to avoid the input and output of the data through a cable between the liquid crystal display devices. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for displaying information using a phase transition phenomenon of liquid crystal molecules.

  Compared with other types of display devices, the liquid crystal display device has advantages such as low power consumption, low voltage driving, and easy reduction in thickness and weight. In general, information display is premised on color display, but in recent years, full color display has also been realized. For this reason, the application range of the liquid crystal display device is greatly improved by the colorization, and new product development is being actively performed by various manufacturers. As a result, it is now very widespread in society. The liquid crystal display device can form a very large screen by modularizing it so that a plurality of liquid crystal display devices can be combined. For this reason, in places such as stations and airports, it is adopted as a device (public display device) for transmitting information to the public.

  Liquid crystal molecules do not emit light. For this reason, a backlight is required in a use environment where the external light state is poor. When used as a public display device, the image must be clearly displayed. For this reason, a backlight is indispensable in that case.

  Compared to the lifetime of the liquid crystal, that of the backlight is very short. However, in the conventional liquid crystal display device provided with the backlight, the backlight is fixedly provided on the liquid crystal panel of the device. For this reason, the lifetime of the backlight becomes the lifetime of the device, and the device in which the backlight is defective has to be discarded, and the user has to purchase a new display device. As a result, there was a problem of increasing the economic burden.

When a liquid crystal display device is adopted as a public display device, a plurality of liquid crystal display devices are used to form a screen of the public display device. It is common to use most of the day every day. For this reason, in such a case, the liquid crystal display device that has reached the end of its life while using the public display device is replaced at any time, which causes a significant increase in running cost. For this reason, the above problem has become more serious for users who employ liquid crystal display devices as public display devices. In addition to avoiding the problem, there are requests for reduction of various costs such as manufacturing cost and installation cost, and improvement of visibility, and realization thereof has been desired.
JP-A-11-109318 Japanese Patent Laid-Open No. 4-139485

The first object of the present invention is to provide a technique capable of reducing costs associated with a liquid crystal display device such as running cost and manufacturing cost.
A second object of the present invention is to provide a technique capable of reducing the cost required for installing a display device including a liquid crystal display device.

  A third object of the present invention is to provide a technique capable of improving the visibility of information displayed on a liquid crystal display device.

  The liquid crystal display devices according to the first and second aspects of the present invention are both used in combination with other liquid crystal display devices, and are premised on displaying information on a liquid crystal panel according to externally input data. .

The liquid crystal display device according to the first aspect closes an opening provided in a housing of the liquid crystal display device for a liquid crystal sealing member protruding from the liquid crystal panel.
The liquid crystal display device according to the second aspect is a data input device capable of directly inputting data from a data output device of another liquid crystal display device, and a data output capable of directly outputting data to the data input device of another liquid crystal display device. Means.

  In the configuration of the second aspect, by providing the data input means on the side surface of the casing of the liquid crystal display device, the data output means of the other liquid crystal display device located on the side surface side and the data input means are provided. The data output means can be directly connected, and the data output means is provided on the side surface opposite to the side face, so that the data input means of the other liquid crystal display device located on the side face side and the data output means can be connected directly It is desirable to do so. Alternatively, the data input means and the data output means are provided on the back side of the liquid crystal display device, and one of the data input means and the data output means protrudes outward so that the data input means or the data It is desirable that the output means can be directly connected to the data output means or data input means of another liquid crystal display device located adjacent to the output means.

  The display device holding methods of the first and second aspects of the present invention are both premised on being used to hold a display device that displays information on a display panel in accordance with data input from the outside. .

  According to a first aspect of the method for holding a display device, a projection is formed on two opposite side surfaces of a housing of the display device, and a groove is formed in accordance with the shape of the projection formed on the side surface. Protrusion formed on the side surface by preparing the second support member and arranging the first and second support members so that the grooves face each other while matching the distance between the two opposite side surfaces to form an opening. Is supported by the grooves of the first and second support members, respectively, to hold the display device using the first and second support members.

  According to a second aspect of the display device holding method, a protrusion is formed on two opposing side surfaces of a housing of the display device, and a depression is formed in accordance with the shape of the protrusion formed on one of the two side surfaces. A first support member and a second support member provided with a step and a pressure contact member that presses the protrusion in accordance with the shape of the protrusion formed on the other of the two side surfaces are prepared, and the distance between the two opposing side surfaces is prepared. The first and second support members are arranged in a state where the depression and the step are opposed to each other to form an opening, and the protrusion formed on one side surface is supported by the depression of the first support member. The projection formed on the other side surface is supported by the step of the second support member and the pressure contact member, whereby the display device is held using the first and second support members.

It is assumed that the display device holding mechanisms of the first and second aspects of the present invention are both used to hold a display device having protrusions formed on two opposite side surfaces of the housing.
The display device holding mechanism according to the first aspect includes first and second support members each having a groove formed in accordance with the shape of the protrusion formed on the side surface, and an interval between two opposing side surfaces. The first and second support members are arranged in a state where the grooves face each other while forming the opening.

  The display device holding mechanism according to the second aspect includes a first support member in which a depression is formed in accordance with the shape of the protrusion formed on one of the two side surfaces, and a protrusion formed on the other of the two side surfaces. And a second support member provided with a pressure contact member that presses against the protrusion in accordance with the shape, and the first and second steps in a state where the recess and the step are opposed to each other while matching the interval between two opposing side surfaces. And the 2nd supporting member is arrange | positioned and the opening is formed.

  In the present invention, the opening provided in the housing of the liquid crystal display device is blocked by the liquid crystal sealing member protruding from the liquid crystal panel, so that the deterioration in visibility caused by light leaking from the opening is prevented. be able to.

  Since the present invention enables direct input / output of data by directly connecting to adjacent liquid crystal display devices, parts such as cables are not required for the connection, and the liquid crystal display device can be used for actual use. Such costs can be further reduced.

  The present invention provides first and second support members in which grooves are formed in accordance with the shapes of protrusions formed on two opposite side surfaces of a housing of a display device, and the two opposite side surfaces are provided. The display device is held by supporting the formed protrusions in the grooves of the first and second support members, respectively. For this reason, it is possible to attach and detach the display device, that is, to install and remove it very quickly and easily. Thereby, the installation cost and the running cost can be reduced.

  According to the present invention, a first support member in which a depression is formed in accordance with the shape of a protrusion formed on two opposing side surfaces of a housing of a display device, a step, and a pressure contact member that presses the protrusion are provided. A second support member is prepared, and the protrusion formed on one side surface is supported by the recess of the first support member, and the protrusion formed on the other side surface is supported by the step of the second support member and the pressure contact member. By supporting the display device, the display device is held using the first and second support members. For this reason, the display device can be attached and detached very quickly and easily.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<First Embodiment>
FIG. 1 is a diagram showing the appearance of the liquid crystal display device according to the first embodiment. FIG. 4A is a front view, and FIG. 4B is a side view. The liquid crystal display device is modularized so that a larger display screen can be formed using a plurality of liquid crystal display devices.

  As shown in FIG. 1, the liquid crystal display device has a liquid crystal panel 12 arranged in accordance with an opening 11 a provided in a cover 11 that is a housing of the device, and a backlight unit 14 on the back side of the panel 12. And two drive units 13 are arranged.

  Two protrusions 11c each having a hole 11b are provided on the upper and lower side surfaces of the cover 11, respectively. The protrusion 11c is for attaching the liquid crystal display device to the support member. The liquid crystal display device is attached by inserting a screw into the hole 11b and screwing the screw into the support member (see FIG. 16).

FIG. 2 is a diagram showing an appearance of the backlight unit 14. FIG. 2A is a front view, FIG. 1B is a side view, FIG. 1C is a rear view, and FIG.
As shown in FIG. 2, the backlight unit 14 includes a backlight unit 21 that emits light transmitted through the liquid crystal panel 12 and an inverter 15. The backlight unit 21 is not particularly illustrated, but for example, two cold cathode lamps as light sources, a light guide plate disposed between the lamps, a diffusion sheet provided on the side of the light guide plate facing the liquid crystal panel 12, And a reflector provided on the opposite side. With this configuration, almost one surface of the backlight unit 21 is an effective light emitting region 22. The heat radiating plate 24 is attached to the backlight unit portion 21 in the form of being bonded to the reflecting plate. Thereby, most of the heat transferred from the lamp to the reflecting plate is radiated through the heat radiating plate 24.

  The inverter 15 drives the lamp of the backlight unit 21 and is provided with a plurality of connectors 25 to 27. The connector 25 is for receiving a DC voltage from the outside, for example. The inverter 15 converts the DC voltage received via the connector 25 into an AC voltage and drives the lamp. The connector 26 is for communicating with, for example, a device that controls the liquid crystal display device. The inverter 15 changes the amount of light of the lamp in accordance with the instruction received through the connector 26. The two connectors 27 are for supplying the voltage received via the connector 25 to other liquid crystal display devices.

  The backlight unit 21 is provided with sheet-like packings 23 on two opposing side surfaces so as to protrude from the side surfaces. The packing 23 is for attaching the backlight unit 14 to the main body of the liquid crystal display device, that is, the cover 11. The function of the packing 23 will be described in detail with reference to FIG.

  The packing 23 is made of an elastic member. The width of the main body of the backlight unit 21 (when the liquid crystal display device is assumed to be installed on a horizontal plane, the horizontal length viewed from the front. The vertical length viewed from the front is called height. Unless otherwise specified, this assumption is assumed to be approximately the same length as the inner width of the cover 11. For this reason, when the backlight unit 14 is inserted into the cover 11, the packing 23 is bent as shown in FIG. 7 and is brought into pressure contact with the inner surface of the cover 11 by its own elastic force. This is the state over the entire side surface of the backlight unit 21. Thereby, when the backlight unit 14 is attached to the liquid crystal display device, the gap generated between the cover 11 and the backlight unit 21 becomes extremely small. As a result, it is possible to keep dust and dust from entering between the backlight unit 21 and the liquid crystal panel 12 extremely low.

  In the present embodiment, the packing 23 is provided in contact with the heat sink 24. Correspondingly, a member having high thermal conductivity (for example, a conductive member mixed in rubber) is used for the packing 23. As a result, the heat accumulated in the heat radiating plate 24 via the packing 23 is efficiently transferred to the cover 11, in other words, the cover 11 functions as a heat radiating plate, and is due to the heat of the apparatus. The influence can be further reduced. The arrow in FIG. 9 represents the heat flow.

  As described above, when the backlight that is fixedly attached to the main body is a detachable unit, only the unit needs to be replaced even if the light source (here, the cold cathode lamp) reaches the end of its life. For this reason, the user's economical load which arises when a light source becomes a lifetime can be suppressed more. Further, since the replacement can be easily performed as compared with the replacement of the liquid crystal display device, the replacement can be completed in a shorter time. As will be described later, the unit 14 can be easily and quickly attached and detached. From these things, a big effect can be acquired also in terms of reduction of labor cost and shortening of working time. In the case where the liquid crystal display device is adopted as a public display device, it is possible to reduce the number of inconveniences by shortening the work time.

  In addition, since the backlight unit 14 is designed separately from the liquid crystal display device main body, it becomes possible to more easily and flexibly cope with changes in the light source, configuration, etc. employed in the unit 14. As a result, the manufacturing cost can be further reduced.

  As shown in FIG. 3, the liquid crystal panel 12 is formed such that a seal 35 is provided along the edge of the glass substrate 31 between two glass substrates 31 and 32 on which transparent electrodes (ITO) are formed. Has been. Thereby, the liquid crystal 34 is sealed in a space surrounded by the glass substrates 31 and 32 and the seal 35. A cell thickness d is maintained between the glass substrates 31 and 32 by a spacer 33. A polarizing plate 36 is disposed outside the glass substrate 31 (opposite the surface facing the liquid crystal 34). A polarizing plate 37 is also arranged outside the other glass substrate 32 (on the side opposite to the surface facing the liquid crystal 34).

  The transparent electrode formed on the glass substrate 31 is a common electrode, and the electrode formed on the other glass substrate 32 is a segment electrode. These patterns have the following shapes. This will be described with reference to FIG. 4 and FIG.

FIG. 4 is a diagram for explaining the pattern of the segment electrodes.
In the present embodiment, the display unit 12a of the liquid crystal panel 12 (part indicated by a two-dot chain line in FIG. 1) is divided into two parts, and a method of driving each part is adopted. Therefore, as shown in FIG. 4, the segment electrode is also composed of two parts each having a common electrode 43 having a terminal part 41, a pixel display part 42, and a common terminal part 43a. .

  The pixel display unit 42 is a part that forms the display unit 12 a of the liquid crystal panel 12. There, pixel electrodes for displaying information for one pixel are arranged over the entire surface. The terminal portion 41 is a portion where terminals for applying a voltage to the pixel electrode are gathered. Thereby, a voltage can be selectively applied to the pixel electrode through the terminal of the terminal portion 41.

  The segment electrode is formed on the printed wiring board. The printed wiring board is attached to the glass substrate 32 using the marks 44 formed at the four corners for alignment. By attaching the printed wiring board to the glass substrate 32, the terminal portion 41 and the common terminal portion 43a are positioned on the terminal formation region 32a of FIG.

  On the other hand, the common electrode which is a full-surface electrode is also composed of two parts as shown in FIG. Each part includes a pixel display unit 51 arranged to face the pixel display unit 42 of the segment electrode, and a terminal unit 52 used for applying a voltage to the pixel display unit 51. In the pixel display portion 51, electrodes having a shape matching the shape of the pixel electrodes are formed on the entire surface.

  The common electrode is also formed on the printed wiring board in the same manner as the segment electrode. The printed wiring board is attached to the glass substrate 31 by using marks formed at the four corners for alignment.

  The common electrode 43 shown in FIG. 4 is electrically connected to the terminal portion 52. Accordingly, when a voltage is applied to the common terminal portion 43a in FIG. 4, the voltage is applied to the pixel display portion 51 via the common electrode 43 and the terminal portion 52 in FIG.

  The liquid crystal panel 12 provided with the above-described common electrode and segment electrode as a transparent electrode is filled with the liquid crystal 34 after the liquid crystal 34 is injected from the injection port provided in the seal 35 and then the injection port is closed with a predetermined member. Is done. The member protrudes compared to other parts. It is not desirable to cut off the protruding portion because the risk of the liquid crystal 34 leaking increases. The cover 11 is manufactured with an emphasis on making the distance between adjacent liquid crystal display devices as small as possible. For this reason, the cover 11 is provided with an opening in order to avoid contact with the member.

  Light from the backlight unit 21 is radiated to the outside through the opening. If the emitted light is reflected or incident on a liquid crystal panel of another liquid crystal display device or reflected on a member in the vicinity of the liquid crystal panel, it causes a decrease in visibility. Dust and dust that enter from the opening may cause the visibility to deteriorate. However, conventionally, the opening has been left as it is.

  On the other hand, in the present embodiment, leaving the opening as it is causes a reduction in visibility, so that the opening of the cover 11 is blocked with a light shielding tape 16 as shown in FIG. Thereby, a drop in visibility is avoided and the liquid crystal display device can be viewed in a better state. FIG. 6 is a diagram for explaining how to close the opening provided in the cover 11. The figure (a) is a side view, and the figure (b) is a front view.

  In FIG. 6, the opening corresponds to a portion indicated by a solid line with 61 in the light shielding tape 16. The openings 61 are all closed with the light shielding tape 16. For this reason, it is possible to prevent a decrease in visibility caused by light leaking from the opening 61.

  Note that the light shielding tape 16 may not be used as a member for closing the opening 61. However, the light shielding tape 16 has advantages over other members such as a thin thickness and easy attachment. For this reason, the light shielding tape 16 is employed in the present embodiment.

  As described above, the transparent electrode, that is, the segment electrode and the common electrode provided on the liquid crystal panel 12 are each composed of two portions having a point-symmetrical relationship. Therefore, each drive unit 13 shown in FIG. 1 is driven in charge of the upper half of the display section 12a of the liquid crystal panel 12 or the lower half of the area.

  As shown in FIG. 1, each drive unit 13 is configured by attaching a printed wiring board 13e to a holding member 13d which is a mold made of synthetic resin, for example. The printed wiring board 13e is, for example, a printed wiring board attached to the glass substrate 32 (a part thereof) or connected thereto. In particular, a driving IC (not shown) is provided. The driving IC displays information on the liquid crystal panel 12 by applying a voltage to the printed wiring board attached to the glass substrate 32, that is, the terminal portion 41 of the segment electrode and the common terminal portion 43a.

  A conventional drive unit is attached with a plurality of screws, or a member constituting a housing is provided with many deformable members (hereinafter referred to as deformable members for convenience), and the deformable members are deformed and held. It was like that. However, in any of these methods, the drive unit cannot be quickly installed.

  Therefore, in the present embodiment, as shown in FIG. 1, a hole 11d is provided in the front corner of the cover 11 and a deformable protrusion 11f is formed in the vicinity of the hole 11d on the side surface. Provided. The holding member 13d of the other drive unit 13 is provided with a protrusion 13a according to the shape of the hole 11d and a recess 13b according to the shape of the protrusion 11f. Furthermore, as shown in FIG. 8, a projection 13 c that is supposed to be brought into contact with the inside of the upper surface of the cover 11 is provided. By providing them, the drive unit 13 can be attached to the cover 11 simply by inserting the protrusion 13a into the hole 11d of the cover 11 and then bending the protrusion 11f toward the drive unit 13 side. .

  As described above, after the drive unit 13 is positioned at the attachment location, it can be attached only by bending the two protrusions 11f. For this reason, the drive unit 13 can be more easily and quickly attached than in the prior art. After the attachment, the cover 11 supports the drive unit 13 inside the two holes 11d, the two protrusions 11f, and the upper surface thereof. Thus, since it is made to support in several places, the drive unit 13 can maintain the state stably. Since the drive unit 13 can be quickly attached, the manufacturing cost can be reduced.

  In the present embodiment, the cover 11 is provided with two holes 11d and two protrusions 11f to support the drive unit 13, but the number of the holes 11d may be larger than that, It may be one. However, in order to stably support the drive unit 13, it is desirable that the total number of the holes 11d and the protrusions 11f for supporting the drive unit 13 is 3 or more.

  The backlight unit 14 shown in FIG. 2 is held using the drive unit 13. This will be described with reference to FIG. In FIG. 9, for convenience, the configuration of the liquid crystal display device is simplified and a side sectional view thereof is shown.

  On the back side of the backlight unit 14, as shown in FIG. 2, two holding claws 28 are provided above, and two holding claws 29 are provided below. The holding member 13d of each drive unit 13 is formed with a claw 13f whose shape is determined based on the shape thereof and the positional relationship between the unit 14 and the drive unit 13 when the backlight unit 14 is attached to the liquid crystal display device. Has been. Accordingly, when the backlight unit 14 is inserted into the cover 11, the claw 28 engages with the holding claw 13 f of the upper drive unit 13, and the claw 29 engages with the holding claw 13 f of the lower drive unit 13. Engage. The holding claw 13f of the upper drive unit 13 supports the claw 28, and the holding claw 13f of the lower drive unit 13 supports the claw 29. As a result, the backlight unit 14 is held by the two drive units 13 and attached to the liquid crystal display device.

  Each drive unit 13 has some play. The play is used to hold the backlight unit 14 in addition to allowing the backlight unit 14 to be inserted between the two drive units 13. Specifically, it is used for pressing the inserted backlight unit 14 against the lower drive unit 13 by the weight of the upper drive unit 13. Thereby, the claw 13f of the drive unit 13 always works on the backlight unit 14 so as to support it. As a result, the backlight unit 14 is stably held in the liquid crystal display device. For this reason, the backlight unit 14 can be removed by pushing up the upper drive unit 13 and pulling out the unit 14.

  Note that the packing 23 of the backlight unit 14 is pressed against the cover 11 when being held by the liquid crystal display device. For this reason, the packing 23 also works to hold the unit 14 more stably.

  As described above, the backlight unit 14 can be attached to and detached from the liquid crystal display device simply by inserting the unit 14 into the cover 11 or pulling it out. For this reason, the unit 14 can be attached and detached very quickly. Thereby, as described above, effects such as a reduction in manufacturing cost and a reduction in time required for maintenance can be obtained.

  In the present embodiment, the holding claws 28 and 29 provided on the backlight unit 14 are used to hold the liquid crystal display device, but the packing 23 may be used to hold it.

  In a natural state, even if the side surface on which one packing 23 is provided is pressed against the inner side of the cover 11, the force that the packing 23 presses the inner side of the cover 11 increases, so that the original state immediately returns. It is almost unthinkable that a force that causes strong rotation acts on the backlight unit 14 that is not rotating at all within the extremely short time. Of course, the unit 14 is lightweight. For these reasons, the backlight unit 14 can be stably held in the liquid crystal display device only by the packing 23.

  Removal when the unit 14 is held only by the packing 23 is performed by rotating the backlight unit 14 around the side surface while pressing the side surface on which one packing 23 is provided against the inside of the cover 11. be able to. By pressing the side surface provided with one packing 23 against the inside of the cover 11, the strength with which the other packing 23 presses the inside of the cover 11 is weakened. The backlight unit 14 can be removed using this. In such a case, the number of parts and the number of assembly steps can be further reduced because it is not necessary to provide or form various claws.

FIG. 10 is a diagram illustrating a connection method between liquid crystal display devices. FIG. 4A is a top view schematically showing two connected liquid crystal display devices, and FIG. 4B is a side view thereof.
As shown in FIG. 10, the drive unit 13 includes a connector for inputting data (hereinafter referred to as an input connector for convenience) and a connector for outputting data (hereinafter referred to as output for convenience). Called a connector). By connecting the input connector and the output connector between the two devices via the cable 101, data sent from another device (a data transmission source device or another liquid crystal display device is supported). Can be sent to another device (usually compatible with other liquid crystal display devices). As a result, it is not necessary to connect all the data transmission source devices (for example, personal computers) and each liquid crystal display device. Therefore, wiring of the cable 101 is also easy.

In the first embodiment, a method of driving the liquid crystal panel 12 in two regions is adopted, but other methods may be adopted. As a matter of course, other methods may be adopted for the addressing method.
<Second Embodiment>
In the first embodiment, it is assumed that the connection between the liquid crystal display devices for the purpose of data input / output is performed via the cable 101. However, as the number of liquid crystal display devices to be combined increases, the number of cables 101 that must be prepared increases accordingly, and the purchase cost increases. For this reason, the second embodiment can connect the liquid crystal display devices without using the cable 101. Thereby, it is possible to reduce the cost when installing the liquid crystal display device so that it can be actually used.

  The configuration of the liquid crystal display device according to the second embodiment is basically the same as that of the liquid crystal display device according to the first embodiment. For this reason, the description will be made by paying attention only to portions different from those of the first embodiment. Further, the same reference numerals as those in the first embodiment are used for the same components as those in the first embodiment.

FIG. 11 is a diagram for explaining a connection method between the liquid crystal display devices in the first embodiment.
When a plurality of liquid crystal display devices are used in combination, that is, when a larger screen is formed, the interval between adjacent liquid crystal display devices is usually very narrow. In the second embodiment, therefore, as shown in FIG. 11, input / output connectors 111 and 112 are provided on two opposing side surfaces of the casing (cover) of the liquid crystal display device. Since the liquid crystal panel 12 is driven by being divided into two upper and lower parts, two each are provided on the upper and lower sides of the same side surface. The reason why the connectors having the same function are provided on the same side surface is that, as described above, the data to be displayed is sequentially transferred to the adjacent liquid crystal display device.

  By providing the connectors 111 and 112 in the liquid crystal display device as described above, the connector 111 and the connector 112 of the adjacent liquid crystal display device can be directly connected as shown in FIG. For this reason, the cable 101 is not necessary, and the liquid crystal display device can be used at a lower cost. The liquid crystal display device is installed by connecting the connector 111 and the connector 112 of adjacent liquid crystal display devices and then fixing the liquid crystal display device with screws or the like. The two protrusions 113 projecting from the upper surface and the lower surface of the casing of the liquid crystal display device are for fixing them.

If one of the connectors 111 and 112 is for input, the other is for output. Instead of switching the function according to the use situation as described above, the function may be limited to one for input and the other for output. The same applies to other embodiments described later.
<Third Embodiment>
In the second embodiment, it is assumed that the liquid crystal display device is installed by fixing with a screw or the like. However, this method requires a certain amount of time for installation and cannot be performed quickly. The third embodiment relates to a holding mechanism for a liquid crystal display device that can be installed more quickly.

  FIG. 13 is a diagram for explaining a method of holding a liquid crystal display device by the liquid crystal display device holding mechanism according to the third embodiment. With reference to FIG. 13, the structure of the mechanism and how to hold (attach) the liquid crystal display device will be described.

  The mechanism is mainly composed of two support members 131 and 132 that are set apart according to the height of the casing excluding the protrusion 113 of the liquid crystal display device. Each support member 131, 132 has a groove 131a, 132a formed on the side facing the other. The grooves 131a and 132a are formed in accordance with the shape of the protrusion 113 provided on the housing.

  The liquid crystal display device is attached to the mechanism by inserting the protrusion 113 protruding from the upper part of the housing into the groove 131a and the protrusion 113 protruding from the lower part of the housing into the groove 132a. When attached in such a manner, the upper surface of the housing is pressed by the support member 131, and the lower surface of the housing is supported by the support member 132. Therefore, the liquid crystal display device does not move only along the grooves 131a and 132a, and is stably held. Moreover, the connector 111 and the connector 112 of an adjacent liquid crystal display device can be connected by moving a liquid crystal display device along the groove | channels 131a and 132a. Therefore, the liquid crystal display device can be installed very easily and quickly. The liquid crystal display device held by the support members 131 and 132 can be easily removed.

  The liquid crystal display device can be fixed only by supporting the liquid crystal display device located at the end so as not to move, but may be supported so as not to move for each liquid crystal display device. The support members 131 and 132 may be manufactured as one part, but each member 131 and 132 may be assembled from a plurality of parts.

Further, although the liquid crystal display device is used as the holding target, other types of display devices such as an LED display device, PDP, VFD, FED, or EL display may be used.
<Fourth embodiment>
In the second embodiment, the connectors 111 and 112 are provided on the side surface of the casing of the liquid crystal display device, so that the connection between the liquid crystal display devices can be performed without using the cable 101. On the other hand, in the fourth embodiment, the connection between the liquid crystal display devices can be performed without providing the connectors 111 and 112 on the side surfaces.

FIG. 14 is a diagram illustrating a connection method between liquid crystal display devices according to the fourth embodiment.
As shown in FIG. 14, in the fourth embodiment, input / output connectors 141 and 142 are provided on the back side of the liquid crystal display device. The connector 142 is provided at a position protruding from the housing in the front direction. Thereby, as shown in FIG. 15, the connector 141 and the connector 142 of the adjacent liquid crystal display device can be directly connected. Even if it does so, the effect similar to the said 2nd Embodiment can be acquired.

In the fourth embodiment, the connector 142 is provided at a position protruding from the housing, but the connector 141 may be provided at a position protruding from the housing instead of the connector 142. Two types of liquid crystal display devices may be prepared: a liquid crystal display device in which both the connector 141 and the connector 142 are projected, and a liquid crystal display device in which the connectors 141 and 142 are not projected. If these liquid crystal display devices are alternately placed next to each other, connection between the liquid crystal display devices can be performed without using the cable 101.
<Fifth embodiment>
In the third embodiment, the grooves 131a and 132a are formed in the support members 131 and 132, respectively, so that the liquid crystal display device can be attached and detached easily and quickly. On the other hand, in the fifth embodiment, the liquid crystal display device can be easily attached and detached without using such a groove.

  FIG. 16 is a diagram for explaining a method of holding a liquid crystal display device by the liquid crystal display device holding mechanism according to the fifth embodiment. With reference to FIG. 16, the structure of the mechanism and how to hold (attach) the liquid crystal display device will be described. Here, the attachment target is assumed to be the liquid crystal display device according to the first embodiment.

  The mechanism is mainly composed of two support members 162 and 163 that are set apart from each other according to the height of the casing of the liquid crystal display device. The support member 162 is provided with a step 162a and a claw 162b made of, for example, an elastic member. The other support member 163 is provided with a recess 163a.

  The liquid crystal display device is attached to the mechanism by inserting a protrusion 11c protruding at the bottom of the housing into the recess 163a, and using the protrusion 11c as an axis, the protrusion 11c protruding at the top of the housing faces the step 162a. This is done by rotating the device. The protrusion 11c moves toward the step 162a while pushing the claw 162b upward, and when the projection 11c comes into contact with the step 162a, the action on the claw 162b is released and the claw 162a returns to its original state. Therefore, the liquid crystal display device is held by being supported by the step 162a and the claw 162b while the projection 11c protruding from the upper part of the housing is supported by the recess 163a. The removal from the state is performed by rotating the liquid crystal display device in the direction opposite to that at the time of attachment while pushing the claw 162b upward.

  In the first embodiment, as shown in FIG. 16, since the liquid crystal display device is attached by screws 161 (four pieces), it cannot be quickly attached and detached. However, in the fifth embodiment, as described above, the liquid crystal display device can be attached simply by positioning and rotating. The removal can be performed simply by pressing the claw 162b and rotating the liquid crystal display device. For this reason, the liquid crystal display device can be attached and detached very easily and quickly.

  The support members 162 and 163 may be manufactured as one part, but the members 162 and 163 may be assembled from a plurality of parts. Further, as the pressing of the protrusion 11c, a member other than the claw 162b may be used. The screws 161 may be used. Even if the screws 161 are used, the number of the screws 161 to be used is reduced, and the positioning of the liquid crystal display device is facilitated by the recesses 163a. For this reason, the liquid crystal display device can be attached and detached easily and quickly.

It is a figure which shows the external appearance of the liquid crystal display device by 1st Embodiment. It is a figure which shows the external appearance of a backlight unit. It is a figure explaining the structure of a liquid crystal panel. It is a figure explaining the pattern of a segment electrode. It is a figure explaining the pattern of a common electrode. It is a figure explaining how to close the opening provided in the cover. It is a figure explaining the function of the packing provided in the backlight unit. It is a figure explaining how to attach a drive unit. It is a figure explaining how to attach a backlight unit. It is a figure explaining the connection method between liquid crystal display devices. It is a figure explaining the connection method between liquid crystal display devices (2nd Embodiment: The 1). It is a figure explaining the connection method between liquid crystal display devices (2nd Embodiment: the 2). It is a figure explaining the connection method between liquid crystal display devices (3rd Embodiment). It is a figure explaining the connection method between liquid crystal display devices (4th Embodiment: The 1). It is a figure explaining the connection method between liquid crystal display devices (4th Embodiment: the 2). It is a figure explaining the attachment method of a liquid crystal display device (5th Embodiment).

Explanation of symbols

11 Cover 11c, 11f, 13a, 13c, 113 Protrusion 11b, 11e Hole 12 Liquid crystal panel 13 Drive unit 13b, 163a Recess 13d Holding material 13e Printed wiring board 13f Claw 14 Backlight unit 15 Inverter 16 Light shielding tape 21 Backlight part 23 Packing 24 heat sink 25-28 connector 28, 29 holding claw 43 common electrode 43a common terminal portion 44 mark 61 opening 131, 132, 162, 163 support member 111, 112, 141, 142 input / output connector 131a, 132a groove 162a Step 162b Nail

Claims (8)

In a liquid crystal display device that is used in combination with other liquid crystal display devices and displays information on a liquid crystal panel according to externally input data,
An opening provided in the casing of the liquid crystal display device is closed for the liquid crystal sealing member protruding from the liquid crystal panel.
A liquid crystal display device characterized by the above. In a liquid crystal display device that is used in combination with other liquid crystal display devices and displays information on a liquid crystal panel according to externally input data,
Data input means capable of directly inputting data from the data output means of the other liquid crystal display device;
Data output means capable of directly outputting the data to the data input means of the other liquid crystal display device;
A liquid crystal display device comprising: By providing the data input means on the side surface of the casing of the liquid crystal display device, the data output means of another liquid crystal display device located on the side surface side and the data input means can be directly connected,
The data output means is provided on the side surface opposite to the side surface, so that the data input means of the other liquid crystal display device located on the side surface side and the data output means can be directly connected.
The liquid crystal display device according to claim 2. The data input means and the data output means are provided on the back side of the liquid crystal display device, and one of the data input means and the data output means protrudes outward, whereby the data input means or The data output means can be directly connected to the data output means or the data input means of the other liquid crystal display device located next to the data output means.
The liquid crystal display device according to claim 2. A method for holding a display device that displays information on a display panel according to data input from the outside,
Protrusions are formed on two opposite side surfaces of the display device casing,
First and second support members each having a groove formed in accordance with the shape of the protrusion formed on the side surface are prepared,
An opening is formed by arranging the first and second support members in a state in which the groove is opposed to the gap between the two opposing side surfaces,
Holding the display device using the first and second support members by supporting the protrusions formed on the side surfaces in the grooves of the first and second support members, respectively.
A method for holding a display device. A method for holding a display device that displays information on a display panel according to data input from the outside,
Protrusions are formed on two opposite side surfaces of the display device casing,
A first support member having a recess formed in accordance with the shape of the protrusion formed on one of the two side surfaces, and a step and pressure contact with the protrusion in accordance with the shape of the protrusion formed on the other of the two side surfaces. A second support member provided with a pressure contact member to be prepared,
The first and second support members are arranged to form an opening in a state where the depression and the step are opposed to each other while matching the interval between the two opposing side surfaces,
By supporting the protrusion formed on the one side surface in the recess of the first support member, and supporting the protrusion formed on the other side surface by the step of the second support member and the pressure contact member, Holding the display using the first and second support members;
A method for holding a display device. A mechanism for holding a display device having protrusions formed on two opposite side surfaces of a housing,
Having first and second support members each having a groove formed in accordance with the shape of the protrusion formed on the side surface;
An opening is formed by arranging the first and second support members in a state in which the grooves face each other while matching the distance between the two opposing side surfaces.
A holding mechanism for a display device. A mechanism for holding a display device having protrusions formed on two opposite side surfaces of a housing,
A first support member having a recess formed in accordance with the shape of the protrusion formed on one of the two side surfaces;
A step according to the shape of the protrusion formed on the other of the two side surfaces, and a second support member provided with a pressure contact member that press-contacts the protrusion,
An opening is formed by arranging the first and second support members in a state where the depression and the step are opposed to each other while matching the interval between the two opposing side surfaces.
A holding mechanism for a display device.

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