JP2007265640A - Cable for liquid crystal panel and liquid crystal display television set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable for a liquid crystal panel such as an LVDS cable of low cost and capable of surely establishing GND connection with an electromagnetic shield. <P>SOLUTION: A grounding line for noise removal is formed by pasting gasket tapes 14c on top and bottom faces of the LVDS cable 14. The LVDS cable 14 thus formed in a twisted shape is passed between a frame 11e2 and a substrate frame 12, and is made in contact with a frame 11e and the substrate frame 12, whereby, the noise of the LVDS cable 14 is dismissed with both of the frames 11e, 12 as the ground. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a liquid crystal panel cable having an electromagnetic shield, and a liquid crystal display television including the liquid crystal panel cable.

  A television for displaying and viewing a broadcasted video on a display has been widely used in general households as a basic medium for viewing entertainment programs, movies, news, and the like. And with the improvement of the standard of living, the enlargement of the screen is progressing. However, televisions using a cathode ray tube, which has been the mainstream for a long time, have problems in terms of depth, weight, or power consumption due to their structure, and there has been a limit to the enlargement of the screen.

  On the other hand, in recent years, new display devices that are completely different from cathode ray tubes, such as liquid crystal displays and plasma displays, have been developed due to improvements in electronic, semiconductor, or material technologies. Such display devices are generally referred to as flat display panels in general because they are thinner than conventional CRTs.

  Flat display panels for TV applications can be reduced in cost and increased in size along with the development of technology development and mass production effects. In line with the demand for replacement by TV digitization and the narrow housing situation in Japan, Instead of the CRT method, the market is expanding greatly.

  By the way, when manufacturing a television using the above-mentioned flat display panel, a general-purpose panel assembly supplied by a panel maker is assembled and an original control processing technique is added in many cases. In that case, in assembling such a general-purpose panel assembly, a control processing circuit board is usually attached to the panel assembly.

  When the flat display panel is a liquid crystal display panel, there are two typical examples of the structure for attaching the control processing circuit board to such a panel assembly.

  FIG. 6 shows one of the mounting structures. As shown in the figure, the panel assembly 1 has a liquid crystal display panel 1b mounted on a metal frame 1a and a source driver (not shown) for driving each FET element of the liquid crystal display panel 1b. A timing controller 1c for controlling the gate driver is assembled.

  The control processing circuit board 2 is mounted on a pedestal-shaped metal board frame 3 having legs 3a below, and the legs 3a are fixed to the frame-shaped frame 1a. As a result, the substrate frame 3 on which the control processing circuit board 2 is mounted and the frame frame 1a of the panel assembly 1 are fixed with a gap of a certain distance.

  FIG. 7 shows another mounting structure. As shown in the figure, the control processing circuit board 2 is not provided with the above-described board frame. Instead, a boss 1d is provided on the frame-like frame 1a of the panel assembly 1, and the control processing circuit board is provided on the boss 1d. 2 is screwed directly. Accordingly, the back side of the substrate has a structure facing the frame-shaped frame 1a while being spaced apart by a predetermined distance defined by the boss 1d in a state where the insertion pins and the like of the mounting component are exposed.

  Regardless of the mounting structure described above, an LVDS (Low Voltage Differential Signaling) cable 4 is wired between the control processing circuit board 2 and the timing controller 1c. The LVDS cable 4 is a system in which a parallel signal is converted into a low voltage differential (about 350 mV) serial signal and transferred. By adopting this method, unnecessary radiation can be reduced and the number of transmission lines can be greatly reduced compared to the conventional analog transmission.

  An operation control signal for controlling each FET element in the liquid crystal display panel 1b generated at the control processing circuit board 2 via the LVDS cable 4 to be driven at an appropriate timing is sent to the timing controller 1c. Is transmitted.

  FIG. 8 is a diagram illustrating the structure of the LVDS cable 4.

  As shown in the figure, the LVDS cable 4 is formed by bundling a plurality of twisted wires 4a twisted with-and + wires and a GND wire 4b, and the outer periphery thereof is made of metal or carbon mesh 4f. Further, the outer periphery is double coated with a resin insulating material (not shown). The metal mesh 4f is an electromagnetic shield for blocking the emission of unnecessary radiation noise from the wiring to the outside and the mixing of unnecessary radiation noise from the outside to the wiring. This is because the resin insulating material prevents a short circuit with an external member such as a frame or the back surface of the substrate when the LVDS cable 4 is wired.

  Connectors 4c are provided at both ends of the twisted wire 4a of the LVDS cable 4, and terminals 4d having screw insertion holes are exposed and extended at both ends of the GND wire 4b. The LVDS cable 4 is wired in a gap provided between the board frame 3 on which the control processing circuit board 2 is mounted and the frame frame 1a of the panel assembly 1 or between the back surfaces of the control processing circuit board 2; The connector 4c1 on one end side is connected to the connector provided on the control processing circuit board 2, and the connector 4c2 on the other end side is connected to the connector provided on the timing controller 1c. At the same time, one end of a terminal of a GND wire 4b that is exposed and extended at both ends of the LVDS cable 4 is on the substrate frame 3 on which the control processing circuit board 2 is mounted, or the control processing circuit board 2 itself, and the other end is on the other side. Each of the frame-like frames 1a of the panel assembly 1 is fixed by screws and connected.

  By wiring the LVDS cable 4 between the control processing circuit 2 and the timing controller 1c with the above structure, it is possible to display a high-definition image on the liquid crystal display panel 1b at low cost and power saving. It has become.

  However, the wiring between the control processing circuit 2 and the timing controller 1c using the LVDS cable 4 has the following problems.

  That is, since the LVDS cable 4 needs to be provided with terminals 4d at both ends and screwed in order to make a GND connection, the member cost and man-hours are increased, leading to an increase in cost. In addition, the cost of the GND line 4b itself was also incurred.

  Further, it is necessary to coat the mesh 4f for electromagnetic shielding on the outer periphery of the twisted wire 4a, which also leads to an increase in cost.

  Furthermore, the electromagnetic shielding mesh 4f coating makes it difficult to achieve complete electromagnetic shielding because of its structure, and it is inevitable that unnecessary radiation noise leaks to some extent.

  By the way, the following conventional techniques have been disclosed as techniques related to such wiring.

  That is, in Japanese Patent Application Laid-Open No. 3-236112 (Patent Document 1), in order to achieve both easy insertion of a flat multi-core wire connector and flexibility of the entire wire, the wire is connected to the upper surface of the base portion of the wire contact portion. At the same time that the tape is applied, the fixing tape is applied to the lower surface of the contact portion, or the lower surface and a part of the upper surface that is folded back.

  In Japanese Patent Laid-Open No. 6-37478 (Patent Document 2), in order to reduce the generation of EMI from the signal wiring or power supply wiring printed on the liquid crystal driving semiconductor mounting substrate, The metal foil tape is affixed.

In Japanese Patent Laid-Open No. 10-10565 (Patent Document 3), in order to prevent EMI failure between a liquid crystal display device and other electronic circuits, a tape carrier package for driving liquid crystal, a heat seal, and a liquid crystal display body to be connected are disclosed. The input / output signal wiring is sandwiched between the wirings at both ends and is grounded.
JP-A-3-236112 JP-A-6-37478 Japanese Patent Laid-Open No. 10-10565

  However, in the configuration of Patent Document 1, a tape is attached to a part of the wiring in order to achieve both ease of connector insertion and flexibility of the entire electric wire, thereby improving the rigidity. Cannot solve the problems.

  The configuration of Patent Document 2 relates to the printed wiring on the substrate, and still cannot solve the problems related to the LVDS cable described above.

  In the configuration of the above-mentioned Patent Document 3, the ground wiring that is sandwiched between both sides of the tape-shaped wiring is used as an EMI countermeasure. However, since the wiring itself is exposed and not covered with the shielding material, the electromagnetic shield in LVDS is used. As such, it is completely inadequate and cannot be applied. In addition, the cost problem related to the GND line cannot be solved.

  The present invention has been made in view of the above problems, and is a low-cost liquid crystal panel cable such as an LVDS cable that enables reliable electromagnetic shielding and GND connection, and a liquid crystal display television including the liquid crystal panel cable. The purpose is to provide.

  In order to solve the above problem, the invention according to claim 1 is a liquid crystal display television which displays a predetermined video on a liquid crystal display panel based on a video signal inputted from the outside and views the liquid crystal display television. A liquid crystal display panel, a frame-shaped first frame assembled to the liquid crystal display panel, and a source driver and a gate driver for driving each FET element of the liquid crystal display panel assembled to the first frame. A timing controller for controlling, a control processing circuit board for controlling the timing controller, which is mounted on a pedestal of a second frame having legs underneath and is assembled to the first frame in a state spaced apart from the first frame; The first frame and the second frame spaced apart An LVDS cable as a liquid crystal panel cable arranged between the pedestals and wired between the timing controller and the control processing circuit board, and the LVDS cable is twisted between a + line and a − line. In a state where a plurality of twisted wires and a GND wire provided between the twisted wires are arranged in parallel in a planar shape, one end side is attached to the control processing circuit board at both ends, while the other end side is Each of the connectors to be attached to the timing controller is provided, and a gasket tape having a metal layer is bonded from the upper and lower surfaces over the entire area excluding the two connectors, and between the pedestal of the first frame and the second frame The LVDS cable is twisted into a gap spaced apart by a certain distance to the first frame and the second frame. The skate tape is disposed in contact with the connector, and the connector on one end side is mounted on the control processing circuit board and at the same time the connector on the other end side is mounted on the timing controller. GND connection to the frame and the second frame through contact of the gasket tape to the both frames, and electromagnetic shielding is performed by the gasket tape, and a screw tightening structure of the GND terminal and the electromagnetic shielding The mesh coating is not required, reducing costs and reducing unnecessary radiation noise.

  According to the first aspect of the present invention configured as described above, the GND connection to the first frame and the second frame in the LVDS cable is made through contact of the gasket tape with the both frames. In addition, electromagnetic shielding is performed by the gasket tape.

  According to a second aspect of the present invention, there is provided a liquid crystal panel cable for electrically connecting electrical and electronic components, wherein the liquid crystal panel cable has a metal layer on at least a part of the periphery of a plurality of built-in wirings. The structure is formed by pasting.

  According to invention of Claim 2 comprised as mentioned above, the electromagnetic shielding of the cable for liquid crystal panels is performed by the said gasket tape.

  According to the first aspect of the present invention, the GND connection to the first frame and the second frame in the LVDS cable is performed through the contact of the gasket tape to the both frames, and the electromagnetic shield. Is performed by the gasket tape.

  Therefore, the screw fastening structure of the GND terminal and the mesh coating for the electromagnetic shield in the LVDS cable arranged between the first frame and the second frame are made unnecessary, thereby reducing costs and reducing unnecessary radiation noise.

  According to invention of Claim 2, the electromagnetic shielding of the cable for liquid crystal panels is performed by the said gasket tape.

  Therefore, the mesh coating for electromagnetic shielding in the liquid crystal panel cable becomes unnecessary, thereby reducing costs and reducing unnecessary radiation noise.

  According to invention of Claim 3, the electromagnetic shielding of the cable for liquid crystal panels is performed by the said gasket tape over the whole region.

  Therefore, similarly to the above, the mesh film for electromagnetic shielding in the cable for liquid crystal panel is made unnecessary, thereby reducing the cost and reducing unnecessary radiation noise.

  According to the fourth aspect of the present invention, the GND connection to the metal frame in the liquid crystal panel cable is performed through the contact of the gasket tape with the frame, and the electromagnetic shielding is performed with the gasket tape.

  Therefore, the screw tightening structure of the terminal in the cable for the liquid crystal panel and the mesh coating for the electromagnetic shield are unnecessary, thereby reducing the cost and reducing unnecessary radiation noise.

  According to the fifth aspect of the present invention, as in the first aspect, the GND connection to the first frame and the second frame in the LVDS cable is performed through the contact of the gasket tape with the both frames. In addition, electromagnetic shielding is performed by the gasket tape.

  Therefore, the screw fastening structure of the GND terminal and the mesh coating for the electromagnetic shield in the LVDS cable arranged between the first frame and the second frame are made unnecessary, thereby reducing costs and reducing unnecessary radiation noise.

  According to the sixth aspect of the present invention, the GND connection to the metal frame in the cable for the liquid crystal panel is performed by attaching the gasket tape to the frame, and the electromagnetic shielding is performed by the gasket tape. .

  Therefore, the screw tightening structure of the terminal in the cable for the liquid crystal panel and the mesh coating for the electromagnetic shield are unnecessary, thereby reducing the cost and reducing unnecessary radiation noise.

  According to the seventh aspect of the present invention, the GND connection to the metal frame in the LVDS cable is performed by attaching the gasket tape to the frame, and the electromagnetic shielding is performed by the gasket tape.

  Therefore, the screw tightening structure of the GND terminal in the LVDS cable arranged between the metal frame and the back surface of the control processing circuit board and the mesh coating for the electromagnetic shield are not required, thereby reducing the cost and reducing unnecessary radiation noise.

  Embodiments in which the present invention is embodied in a liquid crystal display television will be described below.

  FIG. 1 is a block diagram illustrating a schematic configuration of a liquid crystal display television 10 in the present embodiment. The liquid crystal display television 10 will not be described in detail and illustrated for structures not directly related to the present invention.

  In the figure, a liquid crystal display TV 10 is a tuner 11d that extracts and outputs a TV broadcast signal of a channel selected from a TV broadcast signal received by an antenna (not shown) and a controller 11b that controls the operation of the main body. A video processing unit 11f that performs control processing so that an image based on a television broadcast signal output from the tuner 11d is displayed in an optimal state on a liquid crystal display panel assembly 11e, which will be described in detail later, and a television output from the tuner 11d. A sound processing unit 11h that outputs sound based on the broadcast signal from the speaker 11g and a remote control receiving unit 11a that receives a control command transmitted from the remote control 11c are provided.

  The remote controller 11c includes various television operation buttons that are normally performed such as power on / off, channel switching, and volume up / down (not shown). The controller 11b controls various normal television operation functions such as power on / off, channel switching, and volume up / down according to control commands received by the remote control receiver 11a. Note that operating power is supplied to each part of the liquid crystal display television 10 from a power supply circuit (not shown). The input of this power supply circuit is a commercial power supply (for example, AC 100V).

  FIG. 2 shows an assembly structure of the liquid crystal display panel assembly 11e and the video processing unit 11f.

  As shown in the figure, the liquid crystal display panel assembly 11e is mounted with a liquid crystal display panel 11e1 on a frame-like frame 11e2 as a first metal frame, and drives each FET element of the liquid crystal display panel 11e1. For this purpose, a timing controller 13 for controlling a source driver and a gate driver (not shown) is assembled.

  In the present embodiment, the video processing unit 11f is a control processing circuit board on which various electronic components are mounted. On the board frame 12 as a pedestal-shaped metal second frame having legs 12a below. The leg portion 12a is fixed to the back side of the frame-shaped frame 11e2. As a result, the substrate frame 12 on which the control processing circuit board (= video processing unit) 11f is mounted and the frame-like frame 11e2 of the liquid crystal display panel assembly 11e are fixed in a state of being separated by a certain distance. .

  In the gap between the frame-shaped frame 11e2 and the board frame 12, an LVDS cable 14 as a liquid crystal panel cable for electrically connecting the control processing circuit board 11f and the timing controller 13 is wired. ing. As described above, the LVDS cable 14 is a cable that converts a parallel signal into a low-voltage differential (about 350 mV) serial signal and transfers it. By adopting this method, unnecessary radiation can be reduced and the number of transmission lines can be greatly reduced as compared with the conventional analog transmission. Therefore, the control processing circuit board 11f of the liquid crystal display television and the timing controller 13 are electrically connected. Standard cable system for connection.

  FIG. 3 shows the structure of the LVDS cable 14 in this embodiment.

  In the figure, the LVDS cable 14 includes, for example, three twisted wires 14a in which + and − wires are twisted with each other, and two GND wires 14b provided between the twisted wires 14a. In a state of being arranged in parallel, the upper and lower surfaces are pasted together with a gasket tape 14c described later over the entire area. Further, at both ends thereof, a connector 14d1 is provided, one end of which is mounted and connected to a connector (not shown) provided on the control processing circuit board 11f, while the other end is provided on the timing controller 13 (not shown). Each connector 14d2 is provided to be connected to the connector.

  The gasket tape 14c is, for example, a metal tape in which an adhesive material is applied to an aluminum foil via a polyester film reinforcing material. As described above, the gasket tape 14c is bonded by bonding from the upper and lower surfaces of the cable. Regardless of which side of the upper and lower surfaces is in contact with an external metal member, the metal member can be electrically connected.

  When the LVDS cable 14 bonded with the gasket tape 14c from above and below is disposed in the gap between the frame-shaped frame 11e2 and the board frame 12, the LVDS cable 14 is twisted. The one end side connector 14d1 is attached and connected to a connector (not shown) provided on the control processing circuit board 11f, while the other side connector 14d2 is attached and connected to a connector (not shown) provided on the timing controller 13. To do.

  By twisting the LVDS cable 14, either one of both surfaces of the gasket tape 14c always comes into contact with both the frame-shaped frame 11e2 and the substrate frame 12. As a result, the frame-shaped frame 11e2 and the substrate frame 12 are electrically connected to each other via the gasket tape 14c, and are GND-connected. Therefore, the conventional screw fastening structure of the GND terminal and the mesh coating for the electromagnetic shield can be eliminated, and the cost can be greatly reduced.

  Further, since the gasket tape 14c is bonded from the upper and lower surfaces over the entire area of the cable, unnecessary radiation noise emitted from the cable is reliably shielded electromagnetically. Therefore, unnecessary radiation noise can be reduced as compared with the conventional mesh coating structure.

  As described above, in the present embodiment, the gasket tape 14c is bonded from the upper and lower surfaces of the entire LVDS cable 14, and is arranged after being twisted between the frame-shaped frame 11e2 and the substrate frame 12, Since either side of the gasket tape 14c is always in contact with both frames, the LVDS cable 14 that enables reliable electromagnetic shielding and GND connection can be provided at low cost.

  In the present embodiment, an example in which the assembly structure of the control processing circuit board 11f with respect to the liquid crystal display panel assembly 11e is different from the first embodiment will be described. Note that description of the common structure is omitted.

  FIG. 4 shows an assembly structure of the liquid crystal display panel assembly 11e and the control processing circuit board 11f.

  As in the first embodiment, the liquid crystal display panel assembly 11e is mounted with a liquid crystal display panel 11e1 on a frame-like frame 11e2 as a first metal frame, and drives each FET element of the liquid crystal display panel 11e1. In addition, a timing controller 13 for controlling a source driver and a gate driver (not shown) is assembled.

  Unlike the first embodiment, the assembly of the control processing circuit board 11f does not involve a board frame. That is, the boss 11e3 is provided on the frame-like frame 11e2 of the liquid crystal display panel assembly 11e instead of the substrate frame, and the control processing circuit board 11f is directly screwed to the boss 11e3. Therefore, the back surface side of the substrate has a structure facing the frame-shaped frame 11e2 while being spaced apart by a predetermined distance defined by the boss 11e3 with the insertion pins and the like of the mounting components exposed.

  In this embodiment, an LVDS cable 14 that electrically connects the control processing circuit board 11f and the timing controller 13 is provided in the gap between the frame-shaped frame 11e2 and the control processing circuit board 11f whose back surface is exposed. Wired.

  FIG. 5 shows the structure of the LVDS cable 14 in this embodiment.

  In the figure, the LVDS cable 14 includes, for example, three twisted wires 14a in which + and − wires are twisted with each other, and two GND wires 14b provided between the twisted wires 14a. In the state of being arranged in parallel, the upper surface of the entire frame is attached to the frame-shaped frame 11e2 with the gasket tape 14c. Further, at both ends thereof, a connector 14d1 is provided, one end of which is mounted and connected to a connector (not shown) provided on the control processing circuit board 11f, while the other end is provided on the timing controller 13 (not shown). Each connector 14d2 is provided to be connected to the connector.

  That is, in the present embodiment, unlike the case of the first embodiment, the LVDS cable 14 is fixed to the frame-shaped frame 11e2 by the gasket tape 14c and is connected only to the frame-shaped frame 11e2. This is because the back surface of the control processing circuit board 11f is exposed to the LVDS cable 14 side because there is no board frame, and the both sides of the LVDS cable 14 are bonded with the gasket tape 14c as in the first embodiment. This is because the LVDS cable 14 may come into contact with an insertion lead, wiring pattern, mounting solder, or the like of the mounting component exposed on the back side of the substrate and may cause a short circuit.

  Thus, when the LVDS cable 14 is disposed in the gap between the frame-shaped frame 11e2 and the control processing circuit board 11f, the frame-shaped frame is covered with the gasket tape 14c over the entire upper surface of the LVDS cable 14. The connector 14d1 on one end side is attached and connected to a connector (not shown) provided on the control processing circuit board 11f, while the connector 14d2 on the other side is provided on the timing controller 13 (not shown). Connect to the connector. However, since the connector 14d1 on one end side of the LVDS cable 14 must be raised in order to connect to the connector of the control processing circuit board 11f located above, the length of the connector 14d1 side is slightly longer than the frame-shaped frame 11e2. It cannot be attached to the gasket tape 14c. Therefore, this portion is electromagnetically shielded by bonding the upper and lower surfaces of the LVDS cable 14 with the gasket tape 14c as in the above embodiment.

In the LVDS cable 14, the gasket tape 14c contacts only the frame-like frame 11e2. As a result, the frame-shaped frame 11e2 is electrically connected via the gasket tape 14c, and is thus GND-connected. Therefore, as in the first embodiment, the conventional GND terminal screw tightening structure and electromagnetic shielding mesh coating can be eliminated, and the cost can be greatly reduced.
In addition, since the gasket tape 14c is attached to the frame-shaped frame 11e2 from the upper surface over the entire area of the LVDS cable 14, unnecessary radiation noise emitted from the LVDS cable 14 is reliably shielded electromagnetically. Therefore, unnecessary radiation noise can be reduced as compared with the conventional mesh coating structure.

  As described above, in this embodiment, the gasket tape 14c is disposed after being attached to the frame-like frame 11e2 from the upper surface of the entire LVDS cable 14 so that the gasket tape 14c contacts the frame-like frame 11e2. Therefore, it is possible to provide the LVDS cable 14 that enables reliable electromagnetic shielding and GND connection at low cost. Moreover, even if the back surface of the control processing circuit board 11f is exposed, there is no fear of a short circuit.

  In addition, this invention is not limited to the structure of the said Example, About the structure listed below, it can change suitably.

1. In each embodiment, the example of the LVDS cable has been described as the liquid crystal panel cable used for the liquid crystal display television. However, the present invention is not limited to this and may be applied to a liquid crystal panel cable other than the LVDS cable. .

  Furthermore, even when applied to an LVDS cable, the present invention is not limited to a liquid crystal display television, and can be applied to an LVDS cable used for other various electric and electronic devices.

2. In each embodiment, the case where the gasket tape is made of aluminum foil has been described. However, the present invention is not limited to this, and tapes made of various materials having conductivity and electromagnetic shielding properties can be applied. For example, copper, carbon fiber, etc. are mentioned.

3. In the first embodiment, the configuration in which the LVDS cable is twisted and disposed in the gap between the board frame and the frame-shaped frame and is in contact with both frames has been described. If possible, the LVDS cable may be arranged in another shape. For example, the shape which meanders in S shape is mentioned.

4). In the first embodiment, the position where the LVDS cable is brought into contact with the board frame and the frame-like frame, such as twist, does not necessarily need to cover the entire length of the LVDS cable. Only the deformation may be added.

5. In Example 2, the position where the LVDS cable is affixed to the frame-shaped frame with the gasket tape does not necessarily need to cover the entire length of the cable, and is in contact with the frame-shaped frame so as not to contact the back surface of the control processing circuit board located above. If so, only a part of the cable may be attached to the frame-shaped frame with gasket tape.

  In this case, however, the portion of the LVDS cable that is not attached to the frame-like frame must be electromagnetically shielded with a gasket tape so that unnecessary radiation noise does not leak due to exposure to the outside.

6). The wiring form in the LVDS cable described in each embodiment is merely an example, and the number of wirings, the wiring layout, and the like can be changed as appropriate. In that case, depending on the wiring form, the state of attaching the gasket tape is appropriately changed. For example, in the first embodiment, the gasket tape is bonded to the upper and lower surfaces. However, if the layout is such that the wirings are arranged concentrically instead of being arranged in parallel on the plane, the gasket tape spirals around it. The structure which winds in the shape can be considered. In this case, the LVDS cable can be brought into contact with the board frame and the frame-like frame, for example, by being meandered.

7). In each embodiment, connectors are arranged at both ends of the LVDS cable, but it is of course possible to use a connection form other than the connector.

8). In each embodiment, the LVDS cable is configured to have both the GND connection to the frame and the electromagnetic shield of the cable itself by gasket tape. However, the present invention is not limited to this, and only one of them is used. It is good also as a structure provided.

  That is, the frame may not be contacted by the gasket tape, but only the electromagnetic shield may be used, and the GND terminal may be screwed to the frame as in the conventional case. According to this, although the cost reduction by omitting the screw tightening of the GND terminal cannot be obtained, the effect of improving the electromagnetic shield and the cost reduction by eliminating the need for the mesh coating can be continuously obtained.

  On the contrary, only the contact of the gasket tape with the frame of the LVDS cable may be performed, and the electromagnetic shield of the entire cable may be made of a mesh coating similar to the conventional one. According to this, the effect of improving the electromagnetic shield and the cost reduction due to the unnecessary use of the mesh coating cannot be obtained, but the cost reduction by omitting the screw tightening of the GND terminal can be continuously obtained.

  The operation after claim 3 will be described below.

  According to a third aspect of the present invention, in the cable for a liquid crystal panel for electrically connecting electrical and electronic components, the metal layers are formed from the upper and lower surfaces over the entire area in a state where the plurality of built-in wirings are arranged in parallel in a planar shape. The gasket tape is formed by pasting together the gasket tape.

  According to the invention of the third aspect configured as described above, the electromagnetic shielding of the cable for the liquid crystal panel is performed by the gasket tape over the entire area.

  According to a fourth aspect of the present invention, there is provided a liquid crystal panel cable for electrically connecting electrical and electronic components, wherein the liquid crystal panel cable has a plurality of built-in wirings arranged in parallel in a planar shape, A gasket tape having a metal layer is bonded from the lower surface, and the gasket tape is arranged in contact with a metal frame between electrical and electronic parts.

  According to invention of Claim 4 comprised as mentioned above, while the GND connection to the metal frame in the cable for liquid crystal panels is performed through the contact to the said frame of the said gasket tape, an electromagnetic shield is the said Done with gasket tape.

  According to a fifth aspect of the present invention, there is provided a liquid crystal panel cable for electrically connecting electrical and electronic components, wherein the liquid crystal panel cable includes a liquid crystal display panel and a frame-shaped first assembled to the liquid crystal display panel. A frame, a timing controller that controls the source driver and the gate driver to drive each FET element of the liquid crystal display panel, and a base of a second frame having legs below And a control processing circuit board for controlling the timing controller, which is mounted in a state spaced apart from the first frame by a predetermined distance, and a predetermined video based on a video signal input from the outside Display on the LCD panel and watch the LCD TV for viewing An LVDS cable disposed between the pedestal of the first frame and the second frame and wired between the timing controller and the control processing circuit board, wherein the LVDS cable has a + line and a − line. While a plurality of twisted wires twisted with each other and a GND wire provided between the twisted wires are arranged in parallel in a planar shape, one end side is attached to the control processing circuit board at both ends, Each of the other ends is provided with a connector attached to the timing controller, and is formed by bonding a gasket tape having a metal layer from the upper and lower surfaces over the entire area excluding the two connectors. The first frame and the second frame The first frame and the second frame are twisted by twisting the LVDS cable into a gap spaced apart from each other by a certain distance. The gasket tape is disposed in contact with the connector, and the connector on one end side is attached to the control processing circuit board, and at the same time the connector on the other end side is attached to the timing controller. The GND connection to the first frame and the second frame is performed through contact of the gasket tape with the two frames, and the electromagnetic shield is performed by the gasket tape. The mesh coating is made unnecessary, reducing costs and reducing unnecessary radiation noise.

  According to the fifth aspect of the present invention configured as described above, as in the first aspect, the GND connection to the first frame and the second frame in the LVDS cable is connected to the both frames of the gasket tape. The electromagnetic shielding is performed by the gasket tape.

  According to a sixth aspect of the present invention, there is provided a liquid crystal panel cable for electrically connecting electrical and electronic components, wherein the liquid crystal panel cable has a plurality of built-in wirings arranged in parallel in a planar shape, It is configured to be attached to a metal frame between electrical and electronic parts so as to cover with a gasket tape having a metal layer from the upper surface.

  According to the invention of claim 6 configured as described above, the GND connection to the metal frame in the cable for the liquid crystal panel is performed through the attachment of the gasket tape to the frame, and the electromagnetic shield is provided. This is done with the gasket tape.

  The invention according to claim 7 is a liquid crystal panel cable for electrically connecting electrical and electronic components, the liquid crystal panel cable includes a liquid crystal display panel, a frame-like frame assembled to the liquid crystal display panel, In order to drive each FET element of the liquid crystal display panel assembled to the frame, it is screwed to a timing controller that controls a source driver and a gate driver, and a boss provided so as to protrude above the frame, A control processing circuit board for controlling the timing controller, which is assembled in a state spaced apart from the frame by a predetermined distance, and displays a predetermined video on the liquid crystal display panel based on a video signal input from the outside for viewing The above-mentioned remote And an LVDS cable disposed between the timing controller and the control processing circuit board, wherein the LVDS cable includes a plurality of positive and negative lines twisted together. The twisted wires and the GND wires provided between the twisted wires are arranged in parallel in a planar shape, and one end side is mounted on the control processing circuit board at both ends, while the other end side is the timing. Each of the connectors to be attached to the controller is provided, and is attached to the frame so as to be covered with a gasket tape having a metal layer from the upper surface over the entire area excluding the two connectors, and GND connection to the frame in the LVDS cable, And preventing contact with the back surface of the control processing circuit board through the attachment of the gasket tape. It performs electromagnetic shielding by the gasket tape, screwing structure of the GND terminal, and unnecessarily the mesh film for electromagnetic shielding has a configuration capable of reducing the cost and unwanted radiation noise.

  According to the invention of claim 7 configured as described above, the GND connection to the metal frame in the LVDS cable is performed through the attachment of the gasket tape to the frame, and the electromagnetic shield is the gasket. Done by tape.

  A low-cost liquid crystal panel cable such as an LVDS cable that enables reliable electromagnetic shielding and GND connection, and a liquid crystal display television provided with the liquid crystal panel cable.

It is a block diagram explaining Example 1 of the present invention. It is sectional drawing explaining Example 1 of this invention. It is a perspective view explaining Example 1 of the present invention. It is sectional drawing explaining Example 2 of this invention. It is a fragmentary perspective view explaining Example 2 of the present invention. It is sectional drawing explaining a prior art. It is sectional drawing explaining a prior art. It is a fragmentary perspective view explaining a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display television 11e1 ... Liquid crystal display panel 11e2 ... Frame-like frame 11e3 ... Boss 11f ... Image processing part 12 ... Frame for board | substrates as 2nd frame 12a ... Leg part 13 ... Timing controller 14 ... LVDS cable as a liquid crystal panel cable 14a ... twisted wire 14b ... GND wire 14c ... gasket tape 14d, 14d1, 14d2 ... connector

Claims (7)

In a liquid crystal display TV that displays a predetermined video on a liquid crystal display panel based on a video signal input from the outside and views it,
In order to drive each FET element of the liquid crystal display panel, the liquid crystal display television is assembled to the liquid crystal display panel, a frame-shaped first frame assembled to the liquid crystal display panel, and the first frame. A timing controller that controls the source driver and the gate driver; and the timing controller that is mounted on a base of a second frame having a leg portion below and assembled to the first frame at a predetermined distance. A control processing circuit board, and an LVDS cable as a liquid crystal panel cable disposed between the pedestal of the first frame and the second frame spaced apart and wired between the timing controller and the control processing circuit board. Comprising
The LVDS cable has a plurality of twisted wires in which + and − wires are twisted with each other, and a GND wire provided between the twisted wires arranged in parallel in a planar shape, with one end at each end. Each side is attached to the control processing circuit board, and the other end is provided with a connector attached to the timing controller, and a gasket tape having a metal layer is bonded from the upper and lower surfaces over the entire area excluding the two connectors. ,
In a state where the gasket tape is in contact with the first frame and the second frame by twisting the LVDS cable in a gap separated by a certain distance between the bases of the first frame and the second frame. By disposing the connector on one end side on the control processing circuit board and simultaneously mounting the connector on the other end side on the timing controller,
A GND connection to the first frame and the second frame in the LVDS cable is performed through contact of the gasket tape with both the frames, and electromagnetic shielding is performed by the gasket tape, so that a GND terminal is screwed. A liquid crystal display television, characterized by eliminating the need for a mesh coating for electromagnetic shielding and reducing costs and reducing unnecessary radiation noise. In LCD panel cables that electrically connect electrical and electronic components,
The liquid crystal panel cable is characterized in that a gasket tape having a metal layer is attached to at least a part of the periphery of a plurality of built-in wirings. In LCD panel cables that electrically connect electrical and electronic components,
3. The cable for a liquid crystal panel according to claim 2, wherein a plurality of built-in wirings are bonded in parallel with a gasket tape having a metal layer from the upper and lower surfaces in a state where the wirings are arranged in parallel in a planar shape. In LCD panel cables that electrically connect electrical and electronic components,
The cable for the liquid crystal panel is formed by bonding gasket tapes having metal layers from the upper and lower surfaces of a plurality of built-in wirings arranged in parallel in a planar shape, and the gasket tape is attached to a metal frame between electrical and electronic components. The liquid crystal panel cable according to claim 3, wherein the liquid crystal panel cable is disposed in contact with the cable. In LCD panel cables that electrically connect electrical and electronic components,
The LCD panel cable is
A liquid crystal display panel, a frame-shaped first frame assembled to the liquid crystal display panel, and a source driver and a gate driver for driving each FET element of the liquid crystal display panel assembled to the first frame. A timing controller for controlling, and a control processing circuit board for controlling the timing controller, which is mounted on a pedestal of a second frame having legs underneath and is assembled to the first frame at a predetermined distance. A predetermined image is displayed on the liquid crystal display panel based on a video signal input from the outside, and is arranged between the spaced apart first frame and second frame bases of the liquid crystal display TV to be viewed. Between the timing controller and the control processing circuit board. A LVDS cable to be,
The LVDS cable has a plurality of twisted wires in which + and − wires are twisted with each other, and a GND wire provided between the twisted wires arranged in parallel in a planar shape, with one end at each end. Each side is attached to the control processing circuit board, and the other end is provided with a connector attached to the timing controller, and a gasket tape having a metal layer is bonded from the upper and lower surfaces over the entire area excluding the two connectors. ,
In a state where the gasket tape is in contact with the first frame and the second frame by twisting the LVDS cable in a gap separated by a certain distance between the bases of the first frame and the second frame. By disposing the connector on one end side on the control processing circuit board and simultaneously mounting the connector on the other end side on the timing controller,
A GND connection to the first frame and the second frame in the LVDS cable is performed through contact of the gasket tape with both the frames, and electromagnetic shielding is performed by the gasket tape, so that a GND terminal is screwed. The liquid crystal panel cable according to claim 4, wherein a mesh coating for electromagnetic shielding is made unnecessary, cost reduction and unnecessary radiation noise are reduced. In LCD panel cables that electrically connect electrical and electronic components,
The cable for the liquid crystal panel is affixed to a metal frame between electrical and electronic parts so that a plurality of built-in wirings are arranged in parallel in a plane and covered with a gasket tape having a metal layer from the upper surface over the entire area. The cable for a liquid crystal panel according to claim 2, wherein the cable is a liquid crystal panel. In LCD panel cables that electrically connect electrical and electronic components,
The LCD panel cable is
A liquid crystal display panel, a frame-like frame assembled to the liquid crystal display panel, a timing controller that is assembled to the frame and controls a source driver and a gate driver to drive each FET element of the liquid crystal display panel; A control processing circuit board for controlling the timing controller, which is screwed to a boss provided so as to protrude above the frame, and is assembled at a certain distance from the frame. A predetermined image is displayed on the liquid crystal display panel based on the signal, and is arranged between the frame and the control processing circuit board that are separated from each other on the liquid crystal display television to be viewed, and is wired between the timing controller and the control processing circuit board. LVDS A Bull,
The LVDS cable has a plurality of twisted wires in which + and − wires are twisted with each other, and a GND wire provided between the twisted wires arranged in parallel in a planar shape, with one end at each end. The frame is so provided that the side is attached to the control processing circuit board and the other end is attached to the timing controller, and is covered with a gasket tape having a metal layer from the upper surface over the entire area excluding the connectors. Pasted into,
The GND connection to the frame in the LVDS cable and the contact prevention to the back surface of the control processing circuit board are performed through the attachment of the gasket tape, and the electromagnetic shielding is performed by the gasket tape, and the screw tightening structure of the GND terminal, The liquid crystal panel cable according to claim 6, wherein a mesh film for electromagnetic shielding is not required, cost is reduced, and unnecessary radiation noise is reduced.

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