KR20050067864A - Detachable liquid crystal display device having a memory - Google Patents

Abstract

A liquid crystal panel, a functional optical sheet disposed on the rear surface of the liquid crystal panel, an image control signal receiver for receiving an image control signal, a power supply unit for receiving power, a memory unit, and an image input from the outside according to the image control signal A liquid crystal module having a timing controller configured to display information or image information of the memory unit on a liquid crystal panel; 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 unit for receiving image information from the outside for providing image information to the liquid crystal module, and the image information. Provided is a removable liquid crystal display device including a cradle having an interface unit for transmitting image information received by a receiver to an image control signal receiver of the liquid crystal module.

As a result, it contributes to thinness and light weight, and is easy to carry, and it is possible to carry the liquid crystal module while viewing the image information stored in the memory, and by attaching it to the cradle installed in the necessary place, such as TV, video, digital camera, Various image information from a computer or the like can be displayed.

Description

Detachable liquid crystal display device having a memory

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

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. It is preferable that the fine pattern 22a is formed in the light guide plate 22, and the reflecting plate 24 for improving light efficiency is located in the back surface of the light guide plate 22. As shown in FIG.

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

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 this problem, and an object of the present invention is to separate the light source, the liquid crystal module having its own memory, and the light source is mounted, and two parts of the cradle (cradle) to interface with the liquid crystal module It is to provide a display device configured as.

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 panel, a functional optical sheet disposed on the rear surface of the liquid crystal panel, an image control signal receiver for receiving image information and image control signals, a power supply unit for receiving power, and image information. A liquid crystal module having a memory unit having a memory and a timing controller configured to display image information input from the outside or image information of the memory unit in response to the image control signal on a liquid crystal panel; 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 unit for receiving image information from the outside for providing image information to the liquid crystal module, and the image information. Provided is a removable liquid crystal display device including a cradle having an interface unit for transmitting image information received by a receiver to an image control signal receiver of the liquid crystal module.

The image information receiver may include a digital video interactive (DVI), a Svideo, a component, a composite, and a USB.

The memory may be a memory card, which may be a read / write memory, and may be a memory stick. Alternatively, the memory may be embedded in the source PCB of the liquid crystal module.

The liquid crystal module includes a charging unit, and charging may be performed when mounted on the cradle.

The liquid crystal module may include a key input unit, and may be stored in the memory unit by switching and capturing a displayed screen. The key input unit may control the timing controller to select image information from the outside or image information in the memory.

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

When the liquid crystal panel of the liquid crystal module is a transmission type, the liquid crystal module may include a lamp for supplying light to the liquid crystal panel.

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 according to 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 210 of FIG. 3 is an edge type, FIG. 4 conceptually shows that the lamp 215 of the direct type is mounted to the cradle 200. 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. In the case of the direct type, there is no reflective plate or light guide plate on the liquid crystal module side.

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 the type directly below the rear surface as shown in FIG. 4 and no reflecting plate and light guide plate on the module side is omitted, a special description is omitted and a description is added to the case where necessary.

5 illustrates the mounting structure of the liquid crystal module in more detail. For example, the rear surface of the liquid crystal module 100 includes a first connector 160 and slide grooves to be mounted on the clays 200 in a sliding manner on both sides thereof. Groove 170 is formed. 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. It is preferable that the slide protrusion 270 and the slide groove 170 are provided in pairs, respectively, but only one corresponding to each other may be considered, and a separate fixture may be considered. . 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.

On the other hand, the power supply is made through the second and fourth connectors 165 and 265 through the connection with the cradle 200, the connector is substantially included in the first and third connectors 160 and 260 Or it can be made separately. When the liquid crystal module 100 has a battery 400, the second and fourth connectors may be charging units. In this case, the second connector 165 is connected to the battery 400.

When the liquid crystal module 100 is not mounted on the cradle 200, the screen stored in the memory 500 may be viewed using the power of the battery 400 or a separate power input unit 190, and the cradle 200 may be used. It is desirable to use the power source of the cradle 200 when connecting to, which is similar to the method currently applied to portable computers.

And the lamp 210 is mounted on the bottom of the cradle 200.

In addition, the liquid crystal module 100 has a memory 500, which can be read / write and a removable memory card type, for example, a memory stick of Sony Japan or an SD card of Matsushita Corporation. Memory Stick is a storage media that stores various multimedia data such as text, voice, video, etc. in a gum-shaped flash memory and can be freely used in digital devices such as digital cameras, camcorders, mobile phones, PDAs, and PCs. Recently, with the development of memory technology, the technology of recording video on the memory stick is being studied, and the usefulness of the memory card is doubled.

FIG. 6 is a side view of FIG. 5, in which the liquid crystal module 100 includes a liquid crystal panel 110, a functional optical sheet 120, a light guide plate 130, and a battery 400 and a memory 500 on the rear surface. The memory 500 is preferably coupled to the PCB 450. The cradle 200 includes a lamp 210 and a third connector 260 which is an LVDS connector, and a slide protrusion 270 protrudes.

Liquid crystal panels, on the other hand, are of transmissive type, reflective type, and transflective type. In the transmissive type, the light receiving type is a method of forcibly supplying light to the liquid crystal in the backlight unit on the rear side of the liquid crystal panel, and the reflective type supplies light to the liquid crystal using external light without a backlight unit to preserve power consumed by the backlight unit. That's the way it is. On the other hand, the transflective type is provided with a backlight unit, but when the external light can be used to display by using the external light, it can be said to be a mixed type using the backlight unit only when the external light is not available.

6 is a structure suitable for the transflective type, the lamp 210 is formed in the cradle 200, and is configured to receive the image information when connected to display the cradle data, separated from the cradle 200 If so, the images stored in the battery 400 and the memory 500 may be viewed.

FIG. 7 is a block diagram of the liquid crystal module 100 and the cradle 200 having the structure of FIG. 5, and an image of the liquid crystal module 100 having an interface with the cradle 200 (see 160 of FIG. 6) on the rear surface of the liquid crystal module 100. A timing controller 300 that receives data (RGB Data) and control signals (for example, an input clock, a horizontal synchronization signal, a vertical synchronization signal, and a data enable signal) input through the signal control signal receiver 380, and the data; There is a drive IC 310a and a gate drive IC 320a. The timing controller 300 includes a data driver 310 including a plurality of drive ICs 310a mounted on a PCB (450 in FIG. 6) using the input control signal 330, and a plurality of gate drive ICs 320a. Generate a control signal for driving the gate driver 320 consisting of.

When the liquid crystal module 100 is connected to the cradle 200, the liquid crystal panel 110 receives the power supply 340, the R, G, and B control signals, and the R, G, and B signals from the cradle 200 according to gray levels. Send it to and display it.

When the liquid crystal module 100 is disconnected from the cradle 200 and used in a portable manner, the timing controller 300 reads and displays data in the memory from the memory interface 390 using the power of the battery 400.

In this case, it is preferable to add a function of capturing or switching the displayed screen by placing the key input unit 370 in the liquid crystal module 100. The key input unit 370 may control the timing controller 300 to select and display image information from the outside and image information of the memory. Since this operation method is a technology widely applied in a digital camera, etc., a detailed description thereof will be omitted.

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 display standard of the panel and supplies them to the liquid crystal display panel through the interface unit 360.

FIG. 8 is another embodiment of the present invention, which is different from FIG. 5 in that it does not adopt a removable memory card such as a memory stick, but a method of embedding the memory 500a in the source PCB 450. The built-in memory 500a has a structure in which a picture or an image is stored and captured when the screen is captured or stored when the screen is connected to the cradle. The block diagram of the removable liquid crystal display having the structure of FIG. 8 is substantially the same as that shown in FIG.

FIG. 9 is a side view of FIG. 8, and as shown, another second lamp 115 is mounted on the liquid crystal module 100 in addition to the lamp 210 of the cradle 200. The lamp 115 is for use as a display only by the liquid crystal module 100 adopting the transmissive liquid crystal panel.

Starting from the basic concept of the present invention, various examples, such as mounting method, various structures of cradles, mounting of memory, various structures of connectors, etc. have been described, but these are only examples and various changes and modifications are made without departing from the spirit of the present invention. While this may be possible, 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 liquid crystal module includes a memory, the image of the memory itself can be viewed, as well as contribute to thinness and light weight, which is easy to carry, and only the liquid crystal module is portable. And, by mounting on the cradle installed in the necessary place, it is possible to display a variety of image information from the TV, video, digital camera, computer and the like. It also has the advantage that you can capture the image if necessary and store it in memory for later display.

That is, due to the configuration of the cradle and the liquid crystal module according to the present invention, it is possible to view various images using the battery while carrying only the liquid crystal module, and to display various image information from the cradle when the cradle is mounted. There is an advantage.

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

Figure 2 is a schematic diagram showing the light transmission path of the 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.

6 is a side view of FIG. 5;

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

8 is a configuration diagram illustrating a coupling relationship between a liquid crystal module and a cradle according to a second exemplary embodiment of the present invention.

9 is a side view of FIG. 8;

* 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

400: battery 450: PCB

500: memory

Claims (17)

a) a liquid crystal panel, b) a functional optical sheet located on the rear of the liquid crystal panel, c) an image control signal receiver for receiving image information and image control signals, d) a power supply unit for receiving power, and e) image information. A memory module having a memory unit, and a timing controller configured to display the image information input from the outside or the image information of the memory unit on the liquid crystal panel according to the 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, and c) image information for receiving image information from the outside to provide image information to the liquid crystal module. And a cradle including a receiver and d) an interface unit for transmitting the image information received by the image information receiver to an image control signal receiver of the liquid crystal module. Removable liquid crystal display device comprising a The method according to claim 1, And an image control signal receiver of the liquid crystal module and an interface unit of the cradle adopt an LVDS transmission method. The method according to claim 1, And an image control signal receiver of the liquid crystal module and an interface of the cradle communicate with each other by contact. The method according to claim 1, The image information receiver includes a DVI, a Svideo, a component, a composite, and a USB. The method according to claim 1, The liquid crystal panel of the liquid crystal module is a transmissive type, the liquid crystal module comprising a lamp for supplying light to the liquid crystal panel. 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, And a plurality of cradle lamps are arranged to be arranged in parallel to the rear surface of the liquid crystal module when the liquid crystal module is mounted. The method according to claim 1, And the memory is a read / write memory. The method according to claim 8, And the memory is a removable memory card. The method according to claim 1, The liquid crystal module further includes a source PCB in which the memory is embedded. The method according to claim 1, And the liquid crystal module further includes a key input unit for storing and switching the screen displayed on the timing controller. The method according to claim 1, The liquid crystal module further comprises a rechargeable battery. The method according to claim 12, The liquid crystal module further includes a charging unit connected to the cradle for charging the battery. Liquid crystal module for selectively mounted on the cradle equipped with a lamp, A liquid crystal panel; A functional optical sheet which receives light from the lamp and is located on a rear surface of the liquid crystal panel; An image control signal receiver for receiving an image control signal from the cradle; A memory unit; A timing controller configured to display image information input from outside according to the image control signal or image information of the memory unit on the liquid crystal panel; Removable liquid crystal module having a. The method according to claim 14, And the memory is a removable memory card. The method according to claim 14, And a key input unit for converting and capturing a screen displayed through the timing controller to be stored in the memory unit. The method according to claim 14, Removable liquid crystal module further includes a rechargeable battery.