KR20050056101A - Detachable liquid crystal display device - Google Patents

Abstract

A liquid crystal module having a liquid crystal panel, a functional optical sheet disposed on a rear surface of the liquid crystal panel, and an image control signal receiver for receiving an image control signal; A lamp for providing light to the optical sheet of the liquid crystal module, an inverter for providing AC power to the lamp, an image information receiving connector for receiving image information from the outside, and an image control signal receiving unit of the liquid crystal module. Provided is a detachable liquid crystal display including a cradle including an image control signal transmitting unit for transmitting a signal.

As a result, it contributes to thinness and light weight, and is easy to carry. Also, by carrying only such a liquid crystal module and mounting it on a cradle installed at a necessary place, various image information from TV, video, digital camera, computer, etc. can be displayed. Will be.

Description

Removable liquid crystal display device

The present invention relates to a liquid crystal display device, and more particularly, to a portable liquid crystal display module.

A liquid crystal display device (hereinafter, LCD) includes two substrates and a liquid crystal filled therebetween, and is a display device that converts electrical information into visual information and transmits it to humans by controlling the liquid crystal. Compared to the CRT type, the LCD has less eye fatigue and is thinner. Therefore, the LCD is widely used not only for portable computers but also for TVs and monitors.

Looking at the configuration of such a liquid crystal display device, as shown in Figure 1, the upper and lower panels and the liquid crystal display panel 10 including the liquid crystal therebetween, the backlight unit 20, and a top case for coupling them a case 31 and a rear case 32 are provided. Here, the backlight unit 20 has a light source placed on the rear surface of the liquid crystal panel 10 so as to directly illuminate the front surface of the substrate, and a light source placed on one or both sides of the substrate to reflect and diffuse light rays by a light guide plate and a reflecting plate. It is divided into edge type (or metering type), and it is mainly used for edge type backlight which can be applied to notebook.

However, in the case of large-sized TVs and monitors, a direct type with some light guide plates and prism removed to enhance luminance is used. In the case of 26 inches, about 16 light sources (CCFLs) are used.

The backlight unit is composed of a functional optical film such as a scattering plate and a diffusion sheet in addition to the lamp.

2 illustrates a structure in which light is transferred from the edge type backlight unit to the liquid crystal panel. As shown in FIG. 2, light emitted from the lamp 21 is redirected through the light guide plate 22, and the diffusion plate 25 is illustrated. Through the optical sheet 27, such as the linear light source is shown to change the surface light source. Moreover, the reflecting plate 24 for increasing light efficiency is also provided. The light guide plate 22 is also preferably formed with a fine pattern 22a for increasing light efficiency.

However, since the backlight unit and the panel are coupled together as described above, there is a reliability problem, for example, due to the heat emitted from the lamp of the backlight unit, such as overheating of the circuit or reduction of the current due to reduction of the current of the inverter.

In addition, according to the tendency to make the width of the light guide plate as small as possible in order to achieve a thin shape, the capacity according to the size of the lamp can not be limited, there is a problem to adopt expensive sheets to increase the efficiency of light as a functional optical sheet. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a display device comprising a liquid crystal module separated from a light source, and a cradle which is equipped with a light source and interfaces with the liquid crystal module. To provide.

Other objects of the present invention will be understood from the accompanying drawings and the following detailed description.

In order to achieve the above object, the present invention provides a liquid crystal module comprising: a) a liquid crystal panel; b) a functional optical sheet disposed on a rear surface of the liquid crystal panel; and c) an image control signal receiver for receiving an image control signal; a) a lamp for providing light to the optical sheet of the liquid crystal module, b) an inverter for providing AC power to the lamp, c) an image information receiving connector for receiving image information from the outside, and d) the image information. A removable liquid crystal display device comprising a cradle including an image control signal transmitter for transmitting information received from a receiver connector to an image control signal receiver of the liquid crystal module.

The image information receiving connector may include at least one of DVI (Digital Video Interactive), Svideo, component, composite, and USB.

The image control signal transmission and reception may adopt a low voltage differential signaling (LVDS) transmission method.

The image control signal transmitting and receiving unit may be a connector of a type connected to each other by a contact, this connector may be a spring type connector.

The cradle may include a cradle and a cradle on which the liquid crystal module is mounted. The liquid crystal module may be slidably mounted to the holder, and the first, third connectors, and the second and fourth connectors may be in positions connected to each other at a mounting position.

The cradle may further include a heat dissipation fan for cooling the lamp.

The cradle lamp may further include a reflective structure reflecting light from the lamp to transmit a greater amount of light to the functional optical sheet of the liquid crystal module.

The cradle lamp may be an edge type located at one side when the liquid crystal module is mounted, or may be a direct type arranged in parallel on the rear surface of the liquid crystal module when the liquid crystal module is mounted.

The cradle may be separated from the body and the support so that the body is rotatable vertically or vertically relative to the support.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same and similar elements are given the same and similar reference numerals in the respective drawings.

3 is a conceptual diagram of a removable liquid crystal display device according to a first embodiment of the present invention. As shown, the removable liquid crystal display device has a liquid crystal module 100 and a cradle 200. The liquid crystal module 100 includes a liquid crystal panel 110, a functional optical film 120, a light guide plate 130, a reflector plate 140, and a housing surrounding the liquid crystal panel 110. The cradle 200 on which the liquid crystal module 100 is mounted receives a lamp 210 for providing light to the light guide plate 130, an inverter 220 for providing AC power to the lamp, and various image information. The connector 230 is included.

This video receiving connector 230 may include DVI (Digital Video Interactive), Svideo, Component, Composite, USB, for example, DVI for TV and Video, Composite for Digital Camera, Svideo for TV, USB for Computers and components are for receiving various image information such as TVs.

While the lamp of FIG. 3 is an edge type, FIG. 4 conceptually shows that the lamp 215 of the direct type is mounted on the cradle 200 in another embodiment. In this case, the liquid crystal module 100 includes a reflective plate. And light guide plate is omitted. In the case of the direct type, the lamps 215 are arranged in parallel on the back of the panel so as to be suitable for large size, such as a desktop monitor or a TV.

As described above, it will be understood about the concept of the present invention, and from now on the concrete structure for applying the backlight unit structure having an edge-type lamp array to the present invention, the application to the direct type Since only the lamp structure arranged in a direct type on the back as shown in Figure 4 is different, a special description is omitted and the description is added as necessary.

5 illustrates the mounting structure of the liquid crystal module in more detail. For example, a rear surface of the liquid crystal module 100 includes a first connector 160 for receiving an image control signal, and slides on the clays 200 on both sides. A slide groove 170 is formed for mounting in a manner. When the slide protrusion 270 corresponding to the slide groove 170 of the liquid crystal module 100 slides, that is, is formed downward from the top, and the liquid crystal module 100 slides and is mounted on the cradle 200. A third connector 260 is positioned at a position corresponding to the position of the first connector 160 so that the first and third connectors 160 and 260 are connected when mounted.

Here, the first and third connectors 160 and 260 adopt a low voltage differential signaling (LVDS) transmission method. LVDS is a transmission method for sending digital information to a flat panel display at high speed through copper wire using a voltage lower than the standard voltage of 5V, which can be used in laptop computers because fewer wires can be used between the motherboard and the panel. Widely used.

In addition, power is separately provided through the second and fourth connectors, which are not shown. The connector may be included in the first and third connectors 160 and 260 substantially or separately. And the lamp 210 is mounted on the bottom of the cradle 200.

6A and 6B illustrate another structure in which the liquid crystal module is mounted on the cradle, and the liquid crystal module (the upper portion of the cradle 200) is mounted on the side by mounting the interface connectors 160 and 260 on the side. 100) is installed. In this case, the cradle 200 may omit the slide protrusion 270 as shown in FIG. 5, and preferably the liquid crystal module 100 is fixed at both sides as shown in FIG. 6B. Although not shown in this case, it is natural that the lamp is under the cradle 200.

On the other hand, although the interface connectors 165 and 265, which are also the first and third connectors 7 and 7b, are mounted on the side, the liquid crystal module 100 slides on the side toward the third connector 260 and is connected thereto. In order to fix the module 100, there is a method of installing the latch 280 at the mounting end opposite to the third connector, that is, the interface connector 260. The latch 280 is operated by a spring, and can be slid from one side by changing the inclined surfaces on both sides, it is preferable to limit the movement from the other side. In this case, when the liquid crystal module 100 is separated from the cradle 200, the liquid crystal module 100 may be separated upward.

Of course, there may be various mounting methods in addition to the method described with reference to Figure 5 in consideration of the mechanical, it is preferable to adopt a slide method, the connector adopts a spring type.

One example of a spring type connector is shown in Figs. 8A and 8B. As shown in FIG. 8A, when the connector 165 is mounted on the side surface of the liquid crystal module, the connector is in the dummy region 190 and the active region 195 corresponding to the display region of the liquid crystal panel. Can be distinguished. Reference numeral 168 is a signal or power bus line.

The advantage of the spring type connector is that the connector 165 on the one side is in contact with each other and the pushing force is continuously applied to the contact point where the connector 165 is in contact. ) Is pushed into the inside of the structure, which is particularly advantageous when mounting slides and has less space charge.

Another spring type connector is a leaf spring type, which is shown in FIG. This method is widely used in mobile phones. Even in this case, when contacting from the upper side or the left side, the leaf spring 169, which is a connection terminal, is inserted into the module 100 and restored when released.

FIG. 10 is a schematic cross-sectional view showing an example of a functional connection relationship between a liquid crystal module and a cradle. As shown in FIG. 10, a lamp 210 is installed inside the cradle 200, and a lamp ( By forming a reflective structure 225 that can reflect the light of the 210, it is shown to increase the efficiency of the light by irradiating the light to the light guide plate 130 of the liquid crystal module 100. The reflective structure can be solved by coating the reflective material.

By adopting such a reflective structure 225, the light efficiency can be increased and the size of the lamp can be increased, so that some sheets of the functional optical sheet 120 can be omitted.

On the other hand, as shown here, in order for the light guide plate 130 to be easily coupled, the shape of the funnel 225a may be adopted at the entrance of the reflective structure. In this case, the light guide plate 130 is adopted to protrude downward, so that only the light guide plate 130 can be inserted into the funnel 225a-shaped inlet, and light is not transmitted to the liquid crystal panel 110.

Although only one lamp 210 is illustrated in the cradle 200, a plurality of lamps may be adopted as necessary.

FIG. 11 illustrates that the heat dissipation fan 280 for cooling the heat by the lamp 210 is mounted on both side surfaces of the reflective structure 225 as shown in FIG. 10. In this case, the heat dissipation fan 280 may be operated when the liquid crystal module 100 is mounted, that is, when the first and third connectors 160 and 260 are connected to each other or when the lamp is powered on or simultaneously. In consideration of the noise of the fan 280, it is possible to operate only when the temperature in the structure is above a certain temperature, may operate every predetermined time period, these various changes can be easily designed by those skilled in the art as needed will be. In order to operate the heat radiating fan 280, a motor not shown is required, which is a conventional structure for driving the fan, and thus description and drawings will be omitted.

12A and 12B show that the inclination adjusting means is installed to allow the user to adjust the tilt according to his / her needs.

As shown, the cradle 200 is divided into the main body (200a) and the cradle support (200b) of the lower, by placing the tilt control means between the cradle body (200a) and the cradle support (200b) According to this exemplary drawing, there is an inclination adjustment unit 410 having a plurality of teeth formed in the outer circumferential direction on the side of the cradle body 200a, and in the outer circumferential direction of the inclination control unit 410, Fixing part 420 having a plurality of teeth corresponding to the spaced apart is installed in the support (200b). The teeth of the tilt adjusting part 200a are preferably made of an elastic material such as rubber, and are spaced apart, so that when the liquid crystal module 100 or the cradle body 200a is tilted forward or backward by a user's force, the teeth are bitten. The tooth of the tilt adjustment unit 410 that has been pulled out is rotatable, and when the user releases the force, the position can be fixed by engaging with the tooth of the corresponding fixing unit 420 at the position.

Here, the fixed shaft 430 penetrates the center of the tilt control unit 410 and is fixed to the cradle support 200b to support the cradle body 200a and the liquid crystal module 100. Tilt adjustment unit 410 may be installed on both sides of the cradle body (200a), it may be installed only on one side and the other side can be supported by the fixed shaft 430.

On the other hand, since the cradle body 200a should rotate together with the liquid crystal module 100, at least a lamp (see 210 in FIG. 5) and an interface unit (see 260 in FIG. 5) with the liquid crystal module should be present. An inverter (see 220 in FIG. 3) for providing AC power to a lamp, which is a component part, and an image information receiver (see 230 in FIG. 3) for receiving image information from an external source to provide image information to the liquid crystal module, may be cradles. Even if it is in the support 200b, it is natural.

In addition, since the cradle body 200a is inclined about the fixed shaft 430, it is natural to provide a space 440 on the support 200b to ensure rotation of the cradle body 200a.

FIG. 13 is a view illustrating the cradle main body rotating in a horizontal space, and the liquid crystal module 100 and the cradle similar to the basic view of FIG. 3 to explain that the cradle is not limited to the structure of FIGS. 5 to 11. It shows as the structure of the field main body 200a, and demonstrates the structure which can rotate left and right between the cradle support 200b and the cradle main body 200a. In this case, a hole is formed on the bottom surface of the cradle main body 200a as a rotating structure, and the object can be achieved as the rotating part 460 having a rod 460a inserted into the hole. Here, the rotating part 460 is integrally or separately coupled with the cradle support 200b. Here, the hole and the rotating part may be screw holes and screws, respectively, may adopt a bearing structure, and various other rotating means may be possible.

On the other hand, as shown in the block diagram shown in FIG. 14, data input through the image signal control signal receiver 380, which is an interface with the cradle 200 (see 160 in FIG. 6), is provided on the rear surface of the liquid crystal module 100. Data) and a timing controller 300 that receives control signals (eg, an input clock, a horizontal synchronization signal, a vertical synchronization signal, and a data enable signal), and a data drive IC 310a and a gate drive IC 320a. . The timing controller 300 uses the control signal 330 to receive the data driver 310 composed of the plurality of drive ICs 310a and the gate driver 320 composed of the plurality of gate drive ICs 320a. Generates a control signal for driving. Reference numeral 340 denotes an input power source.

However, since the timing controller 300 has a fine thickness when the back side of the liquid crystal module 100 according to the present invention, the timing controller 300 is also present in the cradle 200 to reduce the fine thickness. have. In this case, only the data driver IC 310 and the gate driver IC 320 are present in the liquid crystal module.

On the other hand, the cradle 200 has a scaler 350 in addition to the inverter 220 for the lamp to receive the digital control signal 330a and the analog control signal 330b to display image signals and control signals corresponding to various display standards. It converts the image signals and the control signals according to the resolution and the display standard of the panel and is integrated into the LVDS through the interface converter 360 and supplied to the liquid crystal module 100.

Starting from the basic concept of the present invention, but described a variety of examples, such as mounting method, various structures of cradles, various structures of the connector, but this is merely an example and various changes and modifications are possible without departing from the spirit of the invention, It will be understood through the claims that all such various changes and modifications fall within the scope of the present invention.

As described above, according to the present invention, since the lamp is excluded from the liquid crystal module, it contributes to thinness and light weight, and thus has the advantage of being easy to carry, and by carrying only such a liquid crystal module and mounting it in a cradle installed at a necessary place It is possible to display various image information from a TV, a video, a digital camera, a computer, and the like.

Since the lamp can be separately mounted on the cradle, the lamp's capacity or reflection structure can be efficiently adopted, thereby reducing unnecessary adoption of the functional optical sheet, thereby bringing economic advantages.

In addition, since the heat dissipation fan can be placed around the lamp, there is an advantage to cool the heat from the lamp.

1 is an exploded perspective view of a conventional liquid crystal display device

2 is a schematic view showing a light transmission path of a backlight unit;

3 is a block diagram showing the basic concept of the present invention

Figure 4 is a block diagram showing the basic concept of applying the present invention to a direct type backlight unit

5 is a configuration diagram illustrating a coupling relationship between the liquid crystal module and the cradle according to the first embodiment of the present invention;

6A and 6B are respectively a perspective view and a front view illustrating a structure in which a liquid crystal module and a cradle are coupled at an upper side in an interface of the present invention;

7a and 7b are a perspective view and a front view showing a structure in which the liquid crystal module is coupled in the side of the cradle, respectively.

Figure 8a shows that the liquid crystal module is mounted from the top through the spring type connector, Figure 8b is an illustration of the spring type connector.

9 is another exemplary view of a liquid crystal module employing a spring type connector.

10 is a schematic side cross-sectional view illustrating a relationship in which a reflective structure is installed around a lamp inside a cradle and mounted with a liquid crystal module according to the present invention;

FIG. 11 is a conceptual view illustrating a heat dissipation fan mounted on both sides of the cradle as shown in FIG. 10.

12A and 12B are side and perspective views illustrating tilt control structures of the liquid crystal module and the cradle, respectively, as shown in FIG.

FIG. 13 is a side view of the liquid crystal module having a basic structure as shown in FIG.

14 is a block circuit diagram of a liquid crystal module and a cradle according to the present invention.

* Brief description of symbols for the main parts of the drawings *

100: liquid crystal module 110: liquid crystal panel

120: functional optical sheet 130: light guide plate

200: cradle 210: lamp

160, 260: Connector 410: Tilt adjuster

420: fixed part 430: fixed shaft

Claims (19)

a liquid crystal module comprising: a) a liquid crystal panel; b) a functional optical sheet disposed on a rear surface of the liquid crystal panel; and c) an image control signal receiver for receiving an image control signal; a) a lamp for providing light to the optical sheet of the liquid crystal module, b) an inverter for providing AC power to the lamp, c) an image information receiving connector for receiving image information from the outside, and d) the image information. Cradle including an image control signal transmitter for transmitting the information received from the receiving connector to the image control signal receiver of the liquid crystal module Removable liquid crystal display device comprising a The method according to claim 1, The image information receiving connector includes at least one of DVI (Sigital Video Interactive), Svideo, Component, Composite, USB. The method according to claim 1, The image control signal transmission and reception is a removable liquid crystal display device adopting a low voltage differential signaling (LVDS) transmission method. The method according to claim 1, And the image control signal transmitter and receiver are connectors of a type connected to each other by contact. The method according to claim 1, And the image control signal transmitting and receiving unit is a spring type connector. The method according to claim 1, The liquid crystal module is a removable liquid crystal display device which is mounted on the cradle by a slide method. The method according to claim 1, And each of the connectors is mounted on a side of the liquid crystal module. The method according to claim 1, The cradle further includes a heat dissipation fan for cooling the lamp. The method according to claim 1, And a reflective structure surrounding the cradle lamp to reflect light from the lamp so that a greater amount of light is transmitted to the functional optical sheet of the liquid crystal module. The method according to claim 9, Inlet of the reflective structure is a funnel-shaped removable liquid crystal display device. The method according to claim 1, The cradle lamp is arranged to be located on one side of the liquid crystal module when the liquid crystal module is mounted. The method according to claim 1, The cradle lamp is arranged to be arranged in parallel to the back of the liquid crystal module when the liquid crystal module is mounted. The method according to claim 1, The cradle includes at least a cradle body with the lamp and a cradle support for supporting the cradle body, Removable liquid crystal display device including a rotating member to enable the cradle body to rotate relative to the cradle support The method according to claim 13, The inverter and the image information receiving unit is a removable liquid crystal display device configured in the cradle body. The method according to claim 13, The rotating member, An inclination control part connected to the cradle body, flexible material, and having a plurality of teeth outward; A fixing part having teeth connected to the cradle support and protruding inwardly engaged with each tooth of the inclination control part; It contains, And the teeth of the tilt control unit are spaced apart so as to be rotatable by attraction with respect to the teeth of the fixing unit. The method according to claim 13, The rotating member includes a hole formed in the cradle body and a rotating rod fixed to the cradle support. The method according to claim 13, The rotating member includes a screw hole formed in the cradle body and a screw fixed to the cradle support. Liquid crystal module for selectively mounted on the cradle equipped with a lamp, A liquid crystal panel; A functional optical sheet positioned on a rear surface of the liquid crystal panel to receive light from the lamp of the cradle; A first connector for receiving an image control signal from the cradle; A second connector powered by the cradle Removable liquid crystal module comprising a. The method according to claim 18, And the first and second connectors are electrically connected to each other by contact with a corresponding connector.