KR20060013148A - A lamp wire socket and a liquid crystal display provided with the same - Google Patents

Abstract

The present invention relates to a lamp wire socket having improved reliability of an electrical connection and a liquid crystal display device having the same. To this end, the liquid crystal display device of the present invention includes a liquid crystal display panel assembly for displaying an image, and a backlight assembly including a lamp for supplying light to the liquid crystal display panel assembly and guiding the light to improve brightness. And a lamp wire socket connected to the lamp and attached to an end of the lamp wire for supplying power to the lamp, wherein the locking member protrudes between the terminal members of the lamp wire socket. Through this invention it is possible to increase the reliability of the electrical connection between the lamp and the inverter.

Lamp Wire Socket, Inverter, Hanging Member

Description

Lamp wire socket and liquid crystal display device having same {A LAMP WIRE SOCKET AND A LIQUID CRYSTAL DISPLAY PROVIDED WITH THE SAME}

1 is an exploded perspective view of a liquid crystal display according to an exemplary embodiment of the present invention.

2 is a rear perspective view of a liquid crystal display according to an exemplary embodiment of the present invention.

3 is a perspective view of a lamp wire socket according to an embodiment of the present invention.

4 is a cross-sectional view taken along line AA of FIG. 3.

5 is a view showing a coupling state of the lamp wire socket according to an embodiment of the present invention.

The present invention relates to a lamp wire socket and a liquid crystal display device having the same, and more particularly, to a lamp wire socket and improved liquid crystal display device using the same.

With the recent development of semiconductor technology, which is rapidly developing in recent years, the demand for flat panel display devices that are smaller and lighter and has improved performance is exploding.                         

The liquid crystal display (LCD), which has recently been in the spotlight among the flat panel display devices, has advantages such as miniaturization, light weight, and low power consumption, thereby overcoming the disadvantages of the conventional cathode ray tube (CRT). As an alternative means, it has been gradually attracting attention, and is currently used in almost all information processing equipment that requires a display device.

A general liquid crystal display device applies voltage to a specific molecular array of a liquid crystal to convert it into another molecular array, and visually changes optical properties such as birefringence, photoreactivity, dichroism, and light scattering characteristics of the liquid crystal cell emitted by the molecular array. It is a light-receiving display device which converts into a change and displays information using the modulation of the light by a liquid crystal cell.

Since the liquid crystal display panel in the liquid crystal display device does not emit light by itself, the liquid crystal display panel includes a backlight assembly for providing light to the liquid crystal display panel under the liquid crystal display panel. The backlight assembly includes a lamp, a light guide plate, a reflective sheet, optical sheets, and the like.

The lamp uses a cold cathode ray tube lamp that generates relatively little heat, generates white light close to natural light, and has a long lifespan. An inverter mounted on an inverter board converts an external power supply to a constant voltage level and supplies the lamp to a lamp. To this end, a connector mounted on an inverter board is connected to an end of a wire connected to an electrode of the lamp. A socket is installed that connects with.

Therefore, the operation of detaching the socket from the connector is repeated during manufacturing and repair of the liquid crystal display, and thus the connection of the socket to the connector is loose, thereby causing a problem of poor connection.

In order to solve this problem, a locking type member is installed on the upper part of the socket so that the locking type member is caught and fixed to the connector when the connector is coupled with the connector. In the case of using the socket having such a structure, the socket is firmly coupled to the connector to some extent to solve the problem of the aforementioned electrical connection failure.

However, in manufacturing and repairing the liquid crystal display device, as the socket is detached from the connector, stress is applied to the lockable member attached to the upper portion of the socket to damage the lockable member. Therefore, the lockable member is installed. Even so, there was a limit to the reliability of the electrical connection between the lamp and the inverter.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a liquid crystal display having a backlight assembly having an improved electrical connection by providing a lamp wire socket having an improved structure.

In addition, the present invention is to provide a lamp wire socket of a durable structure.

According to an aspect of the present invention, there is provided a liquid crystal display device including a liquid crystal display panel assembly for displaying an image, and a lamp for supplying light to the liquid crystal display panel assembly, the backlight assembly configured to guide light to improve brightness. a backlight assembly further comprising a lamp wire socket attached to an end of the lamp wire connected to the lamp and supplying power to the lamp, the terminal member of the lamp wire socket. The locking member protrudes between them.

The liquid crystal display according to the present invention further includes an inverter for transforming an external power supply to a lamp, and an inverter board mounted with a connector connected thereto. It is formed so that when the engagement with the lamp wire socket, the locking member of the lamp wire socket can be fixed to the recessed groove.

In addition, in the liquid crystal display according to the present invention, the terminal member of the lamp wire socket is formed in a pair, and the locking member may protrude from each side of the pair of terminal members.

In the liquid crystal display device according to the present invention, it is preferable that the protruding surface of the locking member is inclined to face the outside of the lamp wire socket.

The lamp wire socket according to the present invention includes a terminal member having one end connected to the lamp wire and having a plurality of electrical connection terminals extending in the longitudinal direction, and a locking member including a protrusion projecting between the terminal members.

Here, it is preferable that the protrusions protrude from each side of the terminal member.

The locking member may further include a push portion protruding to the side of the terminal member, and a support portion having one end connected to the push portion and extending into the terminal member and the other end connected to the protrusion.                     

Here, it is preferable that the push portion protrudes in the direction opposite to the protrusion.

A fixing pillar is provided in the terminal member, and the fixing pillar can be fixed to the opposite side of the push portion with the supporting portion therebetween to support the supporting portion.

The protrusion may be elastically supported by an elastic member fixed in the terminal member.

In addition, the elastic member is preferably located on the opposite side of the fixing column with the supporting portion therebetween.

The distance between the two opposing sides of the terminal member may gradually decrease as the lamp wire gets closer.

In the lamp wire socket, the protruding surface of the protrusion may be inclined to face the outside.

Further, the terminal preferably extends into the terminal member through the lower surface of the supporting portion of the locking member.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5. These embodiments of the present invention are merely for illustrating the present invention, but the present invention is not limited thereto.

1 is an exploded perspective view of a liquid crystal display according to an exemplary embodiment of the present invention, and shows parts of the liquid crystal display 100 according to the exemplary embodiment. The structure of the liquid crystal display shown in FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the present invention can also be applied to liquid crystal display devices having other structures.                     

The liquid crystal display device 100 according to an exemplary embodiment of the present invention shown in FIG. 1 includes a backlight assembly 50 for supplying light and a liquid crystal display panel assembly 40 for displaying an image corresponding to the light. Is done. In addition, a top chassis 60, an upper mold frame 62, a bottom chassis 64, and a lower mold frame 66 are combined to securely support them. have.

The backlight assembly 50 supplies light to the liquid crystal display panel assembly 40 and guides the light to improve brightness, and the liquid crystal display panel assembly 40 positioned on the backlight assembly 50 has a liquid crystal display in which an image is displayed. Control panel 30.

The liquid crystal display panel assembly 40 includes a liquid crystal display panel 30, a tape carrier package (TCP) 41, 43, and a PCB 42, 44. Here, the liquid crystal display panel 30 is injected between a TFT substrate 31 composed of a plurality of TFTs (thin film transistors), a color filter substrate 33 positioned on the TFT substrate 31, and the substrates. It is made of liquid crystal (not shown).

The TFT substrate 31 is a transparent glass substrate on which a matrix thin film transistor is formed, a data line is connected to a source terminal, and a gate line is connected to a gate terminal. In the drain terminal, a pixel electrode made of transparent indium tin oxide (ITO) as a conductive material is formed.

When electrical signals are input from the PCBs 42 and 44 to the data lines and the gate lines of the liquid crystal display panel 30 described above, electrical signals are inputted to the source and gate terminals of the TFT, and the input of these electrical signals is inputted. Accordingly, the TFT is turned on or turned off so that an electrical signal necessary for pixel formation is output to the drain terminal.

On the other hand, the color filter substrate 33 is disposed on the TFT substrate 31 thereon. The color filter substrate 33 is a substrate in which RGB pixels, which are color pixels in which a predetermined color is expressed while light passes, are formed by a thin film process, and a common electrode made of ITO is coated on the entire surface thereof. When power is applied to the gate terminal and the source terminal of the TFT and the thin film transistor is turned on, an electric field is formed between the pixel electrode and the common electrode of the color filter substrate. By this electric field, the arrangement angle of the liquid crystal injected between the TFT substrate 31 and the color filter substrate 33 is changed, and the light transmittance is changed according to the changed arrangement angle to obtain a desired pixel.

In order to control the alignment angle of the liquid crystals of the liquid crystal display panel 30 and the timing at which the liquid crystals are arranged, a driving signal and a timing signal are applied to the gate line and the data line of the TFT, and the data driving signal is applied to the source side of the liquid crystal display panel 30. A data TCP 43 for determining the application timing of the data is attached, and a gate TCP 41 is attached to the gate side for determining the application timing of the gate driving signal.

The gate PCB 42 and the data PCB 44 for receiving a video signal from the outside of the liquid crystal display panel 30 and applying driving signals to the data line and the gate line, respectively, are provided on the gate line side of the liquid crystal display panel 30. Connection is made with the gate TCP 41 and the data TCP 43 on the data line side, respectively.

The data PCB 44 and the gate PCB 42 generate data signals, gate driving signals, which are signals for driving the liquid crystal display device 100, and a plurality of timing signals for applying these signals at appropriate times, respectively. The gate driving signal is applied to the gate line of the liquid crystal display panel 30 through the gate TCP 41, and the data signal is applied to the data line of the liquid crystal display panel 30 through the data TCP 43.

The backlight assembly 50 is provided under the liquid crystal display panel assembly 40 to provide uniform light to the liquid crystal display panel assembly 40.

The backlight assembly 50 is received and fixed on the bottom chassis 64. The backlight 53 receives light emitted from the lamp 53 and the lamp 53, which are light sources installed on both sides of the bottom chassis 64, and the liquid crystal display panel 30. A light guide plate 55 guided by the light guide plate, a reflective sheet 57 positioned at a lower front surface of the light guide plate 55 to reflect light emitted from the lamp 53, and wrapped and protected the lamp 53, and a reflective material is coated on the inner surface thereof. A lamp cover 51 for reflecting light emitted from the lamp 53, and an optical sheet 56 for securing the luminance characteristic of the light from the lamp 53 to provide light to the liquid crystal display panel 30. do.

In the liquid crystal display device 100 according to the exemplary embodiment of the present invention illustrated in FIG. 1, the top chassis 60 and the upper mold frame 62 may be fixed to support the liquid crystal display panel assembly 40 and the backlight assembly 50. , A bottom chassis 64, and a lower mold frame 66. The lower mold frame 66 secures the data PCB 44 and the gate PCB 42 that are bent to the outer side of the upper mold frame 62. Preventing the liquid crystal display panel assembly 40 from being separated from the bottom chassis 64 while bending the data PCB 44 and the gate PCB 42 out of the upper mold frame 62 on the liquid crystal display panel assembly 40. It has a top chassis 60 for.

On the back of the bottom chassis 64, an inverter board (not shown), which is a power supply PCB, and a signal conversion PCB (not shown) are installed. The inverter board transforms an external power supply to a constant voltage level and supplies power to the lamp 53 through a lamp wire 120 electrically connected to electrodes at both ends of the lamp 53. The signal conversion PCB is connected to the aforementioned data PCB 44 and the gate PCB 42 to convert an analog data signal into a digital data signal and provide the same to the liquid crystal display panel 30. The inverter board and signal conversion PCB are covered and protected by a shield case (not shown).

Although not shown in FIG. 1, a front case and a rear case are positioned at an upper portion of the top chassis 60 and a lower portion of the bottom chassis 64, respectively, to form a liquid crystal display device 100 by combining them. Hereinafter, the data PCB 10 will be described in more detail with reference to FIG. 2.

FIG. 2 is a rear perspective view of a liquid crystal display according to an exemplary embodiment of the present invention, in which components of the liquid crystal display 100 shown in FIG. 1 are combined, and then rotated by 180 ° about an X axis.

As shown in FIG. 2, the liquid crystal display 100 is attached to an end of a data PCB 44 located on the bottom chassis 64 and a lamp wire 120 connected to the lamp and supplying power to the lamp. Lamp wire socket 10. These are connected to a signal conversion PCB (not shown) and an inverter board (not shown), respectively, to receive power and drive signals.

In particular, the locking wire 102 protrudes between the terminal member 112 of the lamp wire socket 10 and is electrically connected to a connector mounted on the inverter board. Accordingly, the lamp wire socket 10 is firmly coupled to the connector, so that the electrical connection state is good, and the latch member 102 is not exposed to the outside of the lamp wire socket 10, so that there is little possibility of damage.

Hereinafter, the structure of the lamp wire socket 10 described above will be described in more detail with reference to FIGS. 3 and 4.

3 is a perspective view of a lamp wire socket according to an embodiment of the present invention, showing a lamp wire socket 10 electrically connected to the lamp wire 120. The appearance of such lamp wire socket 10 is merely to illustrate the present invention, but the present invention is not limited thereto. Therefore, not only the appearance of the lamp wire socket 10 can be modified in other forms, but the lamp wire socket 10 can also be used in other flat panel display devices.

The lamp wire socket 10 includes a terminal member 112 having a largely divided terminal 114 for electrical connection and a locking member 110 (shown in FIG. 4, hereinafter same) that protrudes between the terminal member 112. do. In addition, the lamp wire socket 10 may include other components as necessary.

The terminal member 112 has one end connected to the lamp wire 120, and includes a plurality of terminals 114 for electrical connection extending in the length direction of the lamp wire socket 10. The terminal 114 for electrical connection is electrically connected with the connector. The locking member includes a push portion 104 and a protrusion 102, wherein the protrusion 102 protrudes between the terminal members 112 to fix the connector.

In particular, since the protruding surface of the locking member, that is, the protruding surface of the protrusion 102 is inclined toward the outside of the lamp wire socket 10, it is easy to insert the connector into the locking member, so that the electrical connection is advantageous. In addition, the distance between the opposite side surfaces of the terminal member 112 is gradually reduced as the lamp wire 120 approaches the X-axis direction, so that the lamp wire socket 10 can be easily inserted into the connector. .

Hereinafter, the internal structure of the lamp wire socket of the present invention shown in FIG. 3 will be described in more detail with reference to FIG. 4.

4 is a cross-sectional view taken along line AA of FIG. 3 and illustrates an internal cross section of the lamp wire socket 10 according to the exemplary embodiment. The inner cross section of the lamp wire socket 10 shown in FIG. 4 is merely for illustrating the present invention, but the present invention is not limited thereto. Accordingly, the inside of the lamp wire socket 10 may be formed in another modified structure.

As shown in Figure 4, the lamp wire socket 10 according to an embodiment of the present invention includes a locking member 110 therein. The terminal member 112 of the lamp wire socket 10 is composed of a pair, and the locking member 110 protrudes from each side of the pair of terminal members 112. Here, each side surface of a pair of terminal member 112 opposes each other.

The locking member 110 includes a protrusion 102, a support 106, and a push portion 104. In addition, other parts may be included as needed. The protruding portion 102 has a protruding surface and protrudes to the side of the terminal member 112. The push part 104 protrudes in the direction opposite to the protrusion part 102 on the side surface of the terminal member 112. The support 106 extends into the terminal member 112, one end of which is connected to the push portion 104, and the other end of which is connected to the protrusion 102. The fixing member 101 is installed in the terminal member 112 to be fixed to the opposite side of the push part 104 with the support part 106 interposed therebetween, thereby supporting the support part 106. The protrusion 102 is elastically supported by the elastic member 108 fixed in the terminal member 112. The elastic member 108 is located at the rear side of the protrusion 102, and is positioned opposite the fixing column 101 with the support 106 interposed therebetween. The elastic member 108 used herein may be a spring as an example, and other components having elasticity may also be used.

In the lamp wire socket 10 having the above-described structure, the locking member 110 may be operated to fix the connector in the following manner. The locking member 100 installed in the lamp wire socket 10 operates on the same principle as the lever.

First, when engaged with the connector, the protrusion 102 having an inclined protrusion surface is pushed backward and fixedly coupled with the connector. In this case, since the protrusions 102 are elastically supported by the elastic member 108, the protrusions 102 are tightly supported by the connectors when they are coupled with the connectors and are firmly fixed.

When the lamp wire socket 10 fixed to the connector is to be detached from the connector as described above, the pusher 104 is pressed to separate the lamp wire socket 10 from the connector. When the pusher 104 is pushed to move the support 124 right side in the pressing direction, the left side of the supporter 124 supported by the fixing pillar 101 by the lever principle receives the elasticity of the elastic member 108 while pushing the pusher 104. ) Will move in the opposite direction of the pressing direction. As a result, the protrusion 102 connected to the left end of the support part 106 moves into the terminal member 112 while moving in the direction opposite to the pushing direction of the push part 104, thereby releasing the connector to release the connector from the lamp wire socket 10. Can be taken out.

On the other hand, since the lamp wire socket 10 includes the locking member 110 inside the terminal member 112, the lamp wire socket 10 electrically connects the terminal 114 and the lamp wire 120 so as not to interfere with the locking member 110. . To this end, the terminal 114 extends into the terminal member 112 through the lower portion 124 of the locking member 110 and is electrically connected to the wiring 122 of the lamp wire 120. As a result, the connector 110 may be electrically connected to the connector without being in contact with the locking member 110 to supply power to the lamp through the lamp wire 120.

5 is a view showing a coupling state of the lamp wire socket according to an embodiment of the present invention, a view showing the lamp wire socket 10 and a portion of the upper surface of the connector 200 coupled thereto.

As shown in FIG. 5, the connector 200 mounted on the inverter board 210 receives the transformed voltage from the inverter 220 mounted on the inverter board 210. The concave groove 202 formed in the connector 200 is shown by a dashed-dotted line, so that the protrusion 102 of the locking member of the lamp wire socket 10 is caught in the concave groove 202 when it is combined with the lamp wire socket 10. It is fixed. Through the lamp wire socket 10 having such a structure, reliability of electrical connection with the connector can be secured.

As described above, in the liquid crystal display device according to the present invention, since the locking member protrudes between the terminal members of the lamp wire socket, the locking member is not exposed to the outside of the lamp wire socket, thereby reducing the possibility of damage.                     

In addition, since the locking member of the lamp wire socket is fixed by being caught in the concave groove formed in the connector when the lamp wire socket is engaged, the electrical connection with the connector is excellent.

Since the locking member protrudes from each side of the pair of terminal members, there is an advantage that a reliable electrical connection is secured by fixing both sides of the connector.

Since the protruding surface of the locking member is inclined to face the outside of the lamp wire socket, it is easy to insert the connector into the lamp wire socket.

In addition, since the lamp wire socket according to the present invention includes a catching member embedded in the terminal member and including a protrusion projecting between the terminal members, the connector can be firmly fixed while protecting the catching member from external stress.

Since the locking member includes a push portion and a support portion, there is an advantage in that the lamp wire socket is easily separated.

Since the push part protrudes in the opposite direction to the protrusion and moves in the opposite direction to the protrusion, there is an advantage in that the lamp wire socket can be easily attached and detached.

Since the fixing column is fixed to the opposite side of the push portion with the supporting portion therebetween to support the supporting portion, the supporting portion acts as a lever so that the locking member can be easily operated.

Further, since the protrusion is elastically supported by the elastic member fixed in the terminal member, it is possible to continuously maintain the electrical connection between the connector and the lamp wire socket.

Since the elastic member is positioned on the opposite side of the fixed pillar with the supporting portion interposed therebetween, when the support portion supported on the fixed pillar presses the elastic member, the elastic member may be elastically supported to support the supporting portion.                     

In addition, the distance between the mutually opposite sides of the terminal member decreases gradually as it approaches the lamp wire, so that it is easy to insert the connector into the lamp wire socket.

In addition, since the terminal in the lamp wire socket extends into the terminal member through the lower surface of the supporting portion of the locking member, a reliable electrical connection can be realized while ensuring an effective space that does not interfere with the locking member.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (14)

A liquid crystal display panel assembly for displaying an image, and A backlight assembly including a lamp for supplying light to the liquid crystal display panel assembly and guiding the light to improve brightness Including, The backlight assembly further includes a lamp wire socket connected to the lamp and attached to an end of a lamp wire for supplying power to the lamp, the backlight assembly being caught between the terminal members of the lamp wire socket. A liquid crystal display with protruding members. In claim 1, An inverter for transforming an external power supply to the lamp, and Inverter board mounted with a connector connected to the inverter More, And a concave groove is formed in the connector such that the engaging member of the lamp wire socket is fixed to the concave groove when the lamp wire socket is coupled to the connector. In claim 1, And a pair of terminal members of the lamp wire socket, and the locking member protrudes from each side surface of the pair of terminal members. In claim 3, And a protruding surface of the locking member is inclined to face the outside of the lamp wire socket. A terminal member having one end connected to the lamp wire and having a plurality of terminals for electrical connection extending in the longitudinal direction, and A locking member including a protrusion projecting between the terminal members Lamp wire socket comprising a. In claim 5, And the protrusions protrude from each side of the terminal member. In claim 5, The locking member is A push portion protruding from the side surface of the terminal member, and One end is connected to the push portion, the support extends into the terminal member and the other end is connected to the protrusion Lamp wire socket further comprising. In claim 7, The push portion is a lamp wire socket protruding in the opposite direction to the protrusion. In claim 8, And a fixing pillar in the terminal member, the fixing pillar being fixed to the opposite side of the push portion with the supporting portion interposed therebetween to support the supporting portion. In claim 8, And the protrusion is elastically supported by an elastic member fixed in the terminal member. In claim 10, The elastic member is a lamp wire socket located on the opposite side of the fixing pillar with the support therebetween. In claim 5, And a distance between the mutually opposite sides of the terminal member decreases gradually as the lamp wire approaches the lamp wire. In claim 5, Lamp wire socket in which the projecting surface of the protrusion is inclined toward the outside. In claim 5, And the terminal extends into the terminal member through a lower surface of the support of the locking member.

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