KR100989162B1 - Detachable Liquid Crystal Display Device - Google Patents

Abstract

It is to provide a removable liquid crystal display device having high portability and to prevent contamination of the liquid crystal panel to prevent the problem of poor image quality, the removable liquid crystal display device of the present invention for achieving the above object is the upper, lower substrate and between A liquid crystal panel having a liquid crystal layer filled in; A cover sheet having a function of winding and unwinding the rear surface of the liquid crystal panel; It characterized in that it comprises a cradle (cradle) provided with a fastening groove for fastening the liquid crystal panel and a backlight unit for irradiating light to the liquid crystal panel.

Detachable, Cover Sheet, Cradle, LCD Module

Description

Detachable Liquid Crystal Display Device

1 is a perspective view illustrating a liquid crystal display device having a conventional backlight unit;

2 is a block diagram showing the basic concept of the removable liquid crystal display according to the present invention

3A and 3B are cross-sectional views illustrating a removable liquid crystal display device according to a first embodiment of the present invention.

4A to 4C are structural cross-sectional views illustrating a combination of a removable liquid crystal display device according to a first embodiment of the present invention.

5 is a cross-sectional view illustrating a removable liquid crystal display device according to a second embodiment of the present invention.

6A through 6C are cross-sectional views illustrating a combination of a removable liquid crystal display device according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: liquid crystal module 110: liquid crystal panel

120: optical film 150: housing

160: cover sheet 200: cradle

201: main structure 202: pedestal

203: fastening groove 204: cover sheet storage                 

220: inverter 230: connector

250: backlight unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a removable liquid crystal display device capable of preventing contamination of the back surface of a liquid crystal panel.

CRT (Cathode Ray Tube), one of the commonly used display devices, is mainly used for monitors such as TVs, measuring devices, and information terminal devices.However, due to the weight and size of the CRT itself, Could not respond actively to demands.

Therefore, in the trend of miniaturization and weight reduction of various electronic products, CRT has a certain limit in weight and size, and is expected to replace the liquid crystal display device (LCD) using the electro-optic effect, and gas discharge. There are plasma display panels (PDPs) and electroluminescent displays (ELDs) using electroluminescent effects, among which researches on liquid crystal displays (LCDs) are being actively conducted.

In order to replace the CRT, liquid crystal displays have been actively developed, which have advantages such as small size, light weight, and low power consumption. Developed enough to fulfill its role as a device, it is used in spacecraft, aircraft, laptop computers, laptop computer monitors, desktop computer monitors, and large information display devices, and the demand for liquid crystal display devices is continuously increasing. It is true.

Since most of the liquid crystal display devices are light-receiving devices that display images by controlling the amount of light coming from the outside, a separate light source, that is, a backlight unit, for irradiating light to the LCD panel is necessary.

In general, a backlight unit used as a light source of a liquid crystal display device is a method of arranging a cylindrical light emitting lamp, and is divided into a direct backlight type unit and an edge type backlight unit.

Among these, the direct type backlight unit is mainly developed as the size of the liquid crystal display device is increased to 20 inches or more. A plurality of lamps are arranged in a row on the lower surface of the diffuser plate to direct light to the front of the liquid crystal panel. Direct dimming.

Such a direct backlight unit is mainly used for a large screen liquid crystal display device requiring high brightness because of high light utilization efficiency.

On the other hand, the edge-type backlight unit is a lamp unit is installed on the side of the light guide plate for guiding the light, the lamp unit is a lamp that emits light, the lamp holder is inserted into both ends of the lamp to protect the lamp and the outer peripheral surface of the lamp It is provided with a lamp reflector that wraps and one side is fitted to the side of the light guide plate to reflect the light emitted from the lamp toward the light guide plate.

The edge type backlight unit in which the lamp unit is installed on the side of the light guide plate is mainly applied to a relatively small liquid crystal display device such as a laptop computer and a desktop computer monitor. This is long and advantageous for thinning the liquid crystal display device.

In the backlight unit, research on an edge type backlight unit has been actively conducted in accordance with a demand for thinner and lighter display unit.

In addition, since the edge method provides flat lighting, it is used as a flat panel display in various fields as well as notebook PCs and liquid crystal TVs, and its range is gradually spreading.

Hereinafter, a liquid crystal display device having a backlight unit manufactured according to the prior art will be described with reference to the accompanying drawings.

1 is a perspective view of a liquid crystal display device having a backlight unit manufactured according to the prior art.

A conventional LCD having a backlight unit includes an LCD panel unit 14 and a backlight unit. As shown in FIG. 1, a lamp 10 serving as a light source for emitting light and a lamp 10 may be used. A light guide plate 11 for guiding the emitted light and reflecting the light to the LCD panel 14, a diffusion sheet 12 for diffusing the light exiting the light guide plate 11 at a predetermined angle, and the diffused sheet 12. A prism sheet 13 that condenses and transmits the light to the LCD panel unit 14, an LCD panel unit 14 formed at an upper end of the prism sheet 13, and a fixing mechanism formed at a lower end of the light guide plate 11 ( Not shown) and a reflecting plate 16 which reflects the light transmitted to the fixture to the LCD panel 14 to minimize the loss of light.

In addition to the above configuration, the lamp reflector 18 surrounding the outside of the lamp 10 excluding the light incident surface of the light guide plate 11 to reduce the loss of the outgoing light of the lamp 10 emitted to the light incident surface of the light guide plate 11 and In addition, a lamp holder 17 formed at both ends of the lamp 10 is further provided to fix the lamp 10 to a predetermined position and prevent excessive entry of the light guide plate 11 into the lamp 10 area.

In the above, a plurality of diffusion sheets 12 may be formed as necessary.

In the above, the backlight unit is manufactured according to an edge method, and is used for a monitor in which lamps are disposed at both sides of the light guide plate. The backlight unit may be applied to a notebook PC in addition to the monitor, in which a lamp is disposed only on one side of the light guide plate.

In the conventional liquid crystal display device configured as described above, the backlight unit and the LCD panel unit are integrally coupled, and in particular, the backlight unit provided below the LCD panel unit is integrally coupled with the reflector plate, the light guide plate, the diffusion sheet, the prism sheet, and the lamp. Since the light guide plate must be included in order to output the line light source to the surface light source, there is a problem in that the weight is heavy. In addition, there is a disadvantage that the portability is poor because it is so heavy.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a removable liquid crystal display device which is highly portable and can prevent the problem of poor image quality by preventing contamination of the liquid crystal panel.

Removable liquid crystal display device of the present invention for achieving the above object is a liquid crystal panel having an upper, a lower substrate and a liquid crystal layer filled therebetween; A cover sheet having a function of winding and unwinding the rear surface of the liquid crystal panel; It characterized in that it comprises a cradle (cradle) provided with a fastening groove for fastening the liquid crystal panel and a backlight unit for irradiating light to the liquid crystal panel.

The cradle and the structure is provided with a fastening groove so that the liquid crystal panel can be fastened,

The backlight unit is provided on one surface and is characterized by consisting of a support that can support when the liquid crystal panel is fastened.

When the liquid crystal panel is fastened to the fastening groove of the cradle, the cover sheet is configured to be rolled up to the upper portion of the liquid crystal panel.

The cradle may further include a cover sheet accommodating part for accommodating the cover sheet.

The cover sheet is characterized in that the first fastening means is provided so that the cover sheet is fastened into the cover sheet receiving portion.

The cradle includes the main structure provided with the fastening groove and the cover sheet accommodating part, a backing unit provided on one surface thereof, and a support to support the liquid crystal panel when the liquid crystal panel is fastened, and the first fastening means below the cover sheet. And a second fastening means configured to engage the cover sheet receiving portion.                     

The liquid crystal panel is characterized in that it is manufactured in a transflective or transmissive type so that it can be used indoors and outdoors.

The backlight unit may be configured in an edge method or a direct method.

The cover sheet is characterized by consisting of a soft material that can be wound and unwinded.

Hereinafter, with reference to the accompanying drawings, the removable liquid crystal display of the present invention will be described by dividing into preferred embodiments as follows.

Before explaining the present invention by embodiments, the concept of the removable liquid crystal display of the present invention will be described.

2 is a block diagram showing the basic concept of a removable liquid crystal display device for application to the present invention.

As shown in FIG. 2, the removable liquid crystal display includes 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, and a housing 150 surrounding the liquid crystal panel 110.

The cradle 200 on which the liquid crystal module 100 is mounted is composed of the present structure 201 and the pedestal 202.

The structure 201 is equipped with a liquid crystal module 100, and is provided with an inverter 220 for outputting AC power to the backlight unit and a connector 230 for receiving various image information.

In addition, the pedestal 202 is provided with a backlight unit 250 of a direct type or an edge type to irradiate light from the rear surface of the liquid crystal panel 110.

The video receiving connector 230 may include DVI (Digital Viedo Interactive), Svideo, Component, Composite, USB, for example, DVI is TV and video, Svideo is TV, Component is TV, Composite is Digital The camera and USB are for receiving various image information such as a computer.

First embodiment

3A and 3B are perspective and structural cross-sectional views of a removable liquid crystal display device according to a first embodiment of the present invention, and FIGS. 4A to 4C illustrate a coupling sequence of the removable liquid crystal display device according to the first embodiment of the present invention. One structure cross section.

The removable liquid crystal display according to the first exemplary embodiment of the present invention includes a liquid crystal panel 110 including upper and lower substrates and a liquid crystal layer filled therebetween, as shown in FIGS. 3A and 3B, and the liquid crystal panel. A cover sheet 160 having a rolling (winding and unwinding) function to be attached to an upper side of the 110 to cover the rear surface, a fastening groove 203 for fastening the liquid crystal panel 110, and the liquid crystal panel ( It consists of a cradle (200) provided with a backlight unit 250 for irradiating light to the 110.

The liquid crystal panel 110 is manufactured in a transflective or transmissive type so that it can be used indoors or outdoors.

The cradle 200 includes a main structure 201 having a fastening groove 203 so that the liquid crystal panel 110 can be fastened, and a backlight unit 250 on one surface thereof, and the liquid crystal panel 110 is fastened. If it is composed of a support 202 that can support.                     

The backlight unit 250 is configured in one of an edge method and a direct method on one surface of the pedestal 202 of the cradle 200. That is, the backlight unit 250 may be configured in an edge manner in which lamps are disposed at both sides, and a light guide plate serving as a light guide therebetween, and an edge method having light scattering means on the light guide plate, and a plurality of lamps are disposed in one direction. The lamp unit may be configured in a direct manner with a light scattering means provided above the lamp unit.

As described above, the liquid crystal panel 110 is portable and is detachably mounted to the cradle 200 provided with the backlight unit 250.

As described above, the liquid crystal panel 110 is directly exposed to the outside when the portable electronic device is not fastened to the cradle 200, and thus foreign substances may be caught on the rear surface of the liquid crystal panel 110 during movement or storage. As such, when foreign matter is caught on the rear surface of the liquid crystal panel 110, an image defect may occur due to the foreign matter when the driving unit is coupled to the cradle 200 provided with the backlight unit 250.

The cover sheet 160 is formed to be rolled up to the upper portion of the liquid crystal panel 110 in order to prevent an image defect problem due to foreign matters stuck to the rear surface of the liquid crystal panel 110 as described above. Consists of

Looking at the change of the cover sheet 160 when the liquid crystal panel 110 is fastened to the cradle 200 is as follows.

First, when the liquid crystal panel 110 is separated without being fastened to the cradle 200, as shown in FIG. 4A, the cover sheet 160 completely covers the rear surface of the liquid crystal panel 110.

When the liquid crystal panel 110 is to be fastened to the cradle 200, as shown in FIG. 4B, the cover sheet 160 is rolled up toward the upper portion of the liquid crystal panel 110, and then as shown in FIG. 4C. As described above, the liquid crystal panel 110 is fastened to the fastening groove 203 of the cradle 200.

Second embodiment

5 is a cross-sectional view illustrating a removable liquid crystal display device according to a second embodiment of the present invention, and FIGS. 6A to 6C are cross-sectional views illustrating a combination of a removable liquid crystal display device according to a second embodiment of the present invention.

As shown in FIG. 5, the removable liquid crystal display according to the second exemplary embodiment of the present invention includes a liquid crystal panel 110 including upper and lower substrates and a liquid crystal layer filled therebetween, and the liquid crystal panel 110. A cover sheet 160 having a function of winding and releasing the back of the cover, a fastening groove 203 for fastening the liquid crystal panel 110, and a cover sheet accommodating part 204 for accommodating the cover sheet 160. And a cradle 200 provided with a backlight unit 250 on one surface thereof.

In the liquid crystal display according to the second exemplary embodiment of the present invention having the above structure, when the liquid crystal panel 110 is fastened to the cradle 200, the cover sheet 160 formed on the rear surface of the liquid crystal panel 110 is cradle 200. The characteristic is that it is accommodated in the cover sheet accommodating part 204 in ().

In order to accommodate the cover sheet 160 in the cover sheet accommodating part 204 as described above, the first fastening means, such as a ring, is provided at a lower portion so that the cover sheet 160 is fastened to the cover sheet accommodating part 204. 205) should be further provided.

The cradle 200 includes a main structure 201 having a fastening groove 203 for fastening the liquid crystal panel 110, a backlight unit 250 on one surface thereof, and the liquid crystal panel 110 When fastened is composed of a support 202 that can support.

At this time, the first fastening means 205 below the cover sheet 160 to allow the cover sheet 160 to be rolled into the cover sheet accommodating part 204 under the pedestal 202 provided with the backlight unit 250. And a second fastening means (not shown) for engaging with it.

In addition, the backlight unit 250 is configured in one of an edge method and a direct method on one surface of the pedestal 202 of the cradle 200.

As described above, the liquid crystal panel 110 is detachably mounted to the cradle 200 provided with the backlight unit 250.

When the liquid crystal panel 110 is not fastened to the cradle 200, the liquid crystal panel 110 is directly exposed to the outside, and foreign matter may be caught on the rear surface of the liquid crystal panel 110 during movement or storage. As such, when foreign matter is caught on the rear surface of the liquid crystal panel 110, an image defect may occur due to the foreign matter when the driving unit is coupled to the cradle 200 provided with the backlight unit 250.

The cover sheet 160 is formed to cover the rear surface of the liquid crystal panel 110 when the liquid crystal panel 110 is separated from the cradle in order to prevent an image defect problem due to foreign matter being caught in the liquid crystal panel 110.

In addition, when the cover sheet 160 is fastened to the cradle 200, the cover sheet 160 is made of a soft material that can be wound and unwound to be rolled into the cover sheet accommodating part 204.

Looking at the change of the cover sheet 160 when the liquid crystal panel 110 is fastened to the cradle 200 is as follows.

First, when the liquid crystal panel 110 is separated from the cradle 200 without being fastened, as shown in FIG. 6A, the cover sheet 160 completely covers the rear surface of the liquid crystal panel 110.

When the liquid crystal panel 110 is to be fastened to the cradle 200, as illustrated in FIG. 6B, the first fastening means 205 below the cover sheet 160 may be disposed on the cover sheet accommodating part 204. After the cover sheet 160 is accommodated in the cover sheet accommodating part 204 by hanging on the second fastening means (not shown), the liquid crystal panel 110 is provided in the fastening groove 203 of the cradle 200 as shown in FIG. 6C. ).

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the above embodiments, but should be defined by the claims.

The removable liquid crystal display of the present invention as described above has the following effects.                     

First, since the liquid crystal panel can be attached to or detached from the cradle provided with the backlight unit, portability is high.

Second, by providing a cover sheet on the rear surface of the portable liquid crystal panel, it is possible to prevent the back surface of the liquid crystal panel from being contaminated and to prevent a problem of poor image quality due to the contamination of the liquid crystal panel.

Claims (9)

A liquid crystal panel having upper and lower substrates and a liquid crystal layer filled therebetween; A cradle having a fastening groove for fastening the liquid crystal panel and a backlight unit for irradiating light to the liquid crystal panel; And And a cover sheet having a function of winding and unrolling a roll to cover the rear surface of the liquid crystal panel when the liquid crystal panel is carried without being fastened to the cradle. The method of claim 1, The cradle and the structure is provided with a fastening groove so that the liquid crystal panel can be fastened, The backlight unit is provided on one side and a removable liquid crystal display, characterized in that consisting of a support that can support when the liquid crystal panel is fastened. The method of claim 1, When the liquid crystal panel is fastened to the fastening groove of the cradle, And the cover sheet is configured to be rolled up to the upper portion of the liquid crystal panel. The method of claim 1, The cradle further includes a cover sheet accommodating part for accommodating the cover sheet. The method of claim 4, wherein And a first fastening means provided below the cover sheet to allow the cover sheet to be fastened into the cover sheet accommodating part. The method according to claim 4 or 5, The cradle and the structure provided with the fastening groove and the cover sheet receiving portion, The back light unit is provided on one surface and the support that can support when the liquid crystal panel is fastened; And a second fastening means configured in the cover sheet accommodating portion to be engaged with the first fastening means under the cover sheet. The method of claim 1, The liquid crystal panel is a removable liquid crystal display device, characterized in that it is manufactured in a transflective or transmissive type so that it can be used indoors and outdoors. The method of claim 1, Removable liquid crystal display device characterized in that the backlight unit is configured in an edge method or a direct method. The method of claim 1, The cover sheet is a removable liquid crystal display device, characterized in that consisting of a soft material that can be wound and unwinded.

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