KR100592223B1 - An LCD, an image display apparatus and a potable computer with the same - Google Patents

Abstract

By interposing an adhesive member between the liquid crystal display device and the display box, the assembly properties are improved, and the liquid crystal display device has a thin, light and efficient size. In addition, the adhesive member may be elastic and resistant to impact, and may have a function of shielding electromagnetic waves by including a metal layer.

Description

An LCD, an image display apparatus and a potable computer with the same}

1 is a partially exploded perspective view of a disassembled image display apparatus using a portable computer according to the present invention.

2 is a perspective view illustrating a state in which a liquid crystal panel and a printed circuit board installed in an image display device are assembled;

3 is an exploded perspective view showing a light guide element

4 is a partial cross-sectional view in the longitudinal direction showing the structure of a light source;

5 is a plan view showing a bottom surface pattern structure of a light guide plate;

6 is a cross-sectional view of the diffusion element.

7 is a cross-sectional view of the light collecting element;

8 is a cross-sectional view of the polarization change element

9 is an exploded perspective view of a liquid crystal display device;

10 is a view showing an interposition state of the adhesive member;

11 is a cross-sectional view of the adhesive member

12 is a plan view showing a state in which a non-adhesive portion is formed on an adhesive member;

13 is a view showing another embodiment of the adhesive member

14 is an exemplary view of a first support frame in which an opening is formed;

15 is a view illustrating a method of embedding a liquid crystal display device using the first support frame having an opening portion.

16 is an embodiment of an adhesive member

17 is another embodiment of the adhesive member

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, a liquid crystal display device, and a portable computer having the same, and more particularly, to simply fixing the liquid crystal display device to a screen display box of a portable computer or a monitor.

In general, in order to embed a liquid crystal display device in a display box of a monitor including a portable computer, a separate means (flange) is formed at the edge of the liquid crystal display device and fastened by using a fastening means such as a screw from the front. (Flange type), and Korean Patent Application No. 97-14278 (April 17, 1997) "A portable computer having a liquid crystal display device" as a separate means (screw hole) for the built-in on the side of the liquid crystal display device There was a method of forming and embedding by means of fastening means such as screws (side mount method).

However, the former method has the disadvantage of increasing the actual size of the portable computer and the monitor by additionally forming the built-in means in a portion other than the actual required area, and the latter method has a side effect as the liquid crystal display device becomes thinner. It was difficult to form a built-in means in the work is difficult and the disadvantages of not securing impact resistance.

SUMMARY OF THE INVENTION The present invention is to easily install a liquid crystal display device on a screen display device of a portable computer and a monitor, to secure impact properties, and to increase the occupancy of the effective screen area.

An image display device according to the present invention comprises a liquid crystal display device having an effective screen portion, a display box for accommodating the liquid crystal display device, and a liquid crystal display device interposed between the liquid crystal display device and the display box in an area other than the effective screen portion. It consists of an adhesive member for fixing to the display box.

Here, it is preferable that the adhesive member is adhered to both sides by being composed of a first adhesive layer, a support layer and a second adhesive layer. In addition, the support layer may be made of an organic synthetic material to have elasticity, and at least one or more of the support layer, the first adhesive layer, and the second adhesive layer may be metal-coated to shield electromagnetic radiation.

A portable computer according to the present invention includes a main body including a keyboard and a central image unit, a signal connection member for transmitting a signal processed by the central processing unit, and a signal connection member connected to the image display unit to display an image on an effective screen unit. A liquid crystal display device of the image display device, a display box of the image display device accommodating the liquid crystal display device, and a liquid crystal display interposed between the liquid crystal display device and the display box in an area other than the effective screen portion; It may be composed of an adhesive member for fixing the device to the display box.

In addition, the liquid crystal display according to the present invention comprises a liquid crystal panel including two transparent substrates including a liquid crystal layer, a driving circuit for driving the liquid crystal layer, and a light source disposed on a rear surface of the liquid crystal panel to supply light to the liquid crystal panel. A light guide element comprising a light source, a light guide plate, and a luminous flux control element, a first support frame for accommodating the light guide element, an open portion, and an edge portion around the open portion, wherein the edge portion is an effective area of the liquid crystal panel. It has a second supporting frame covering, and has an adhesive surface to the first supporting frame.

It is preferable that the adhesive member is further interposed thereon on the first support frame.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The computer is composed of a main body 100, an image display device 130, and a signal connection member 120 for transmitting a signal between the main body and the image display device.

<Body>

1 schematically shows a portable computer according to the invention. Here, the main body 100 includes a keyboard 110 and a hard disk (not shown). The main body 100 transmits the data processed by the central computing device (not shown) to the liquid crystal display device 200 of the image display device 130 through the signal connection member 120.

<Image display device>

As shown in FIG. 1, the image display device 130 includes a liquid crystal display device 200, an adhesive member 300, and a display box 400.

<Display box>

The display box 400 is a member that protects and embeds the liquid crystal display 200, and has a top box 410 and a liquid crystal display having an opening corresponding to an effective screen portion on which the image information of the upper surface of the liquid crystal display 200 is displayed. It consists of a lower box 420 to receive the 200 directly.

LCD panel

As shown in FIG. 2, a liquid crystal panel and a driving circuit are configured. In the liquid crystal panel 210, one of two transparent substrates is a thin film transistor substrate 211 including a plurality of thin film transistors, and the other substrate is a thin film transistor substrate. A color filter substrate 212 in which pigments corresponding to red, green, and blue are distributed at positions corresponding to the thin film transistor of 211.

There exists a liquid crystal layer (not shown) which changes the relative position with each other by electric energy between these two board | substrates. This liquid crystal layer remains without leakage between the thin film transistor substrate 211 and the color filter substrate 212 by a sealant (not shown).

On the other hand, polarizing plates (not shown) for selectively passing light are attached to the outer sides of the two transparent substrates at right angles to each other. When light passes through the flat plate attached to the lower substrate, the liquid crystal layer passes through the upper substrate when the liquid crystal layers are arranged in a spiral or the like, and does not pass when the liquid crystals are arranged in the same direction.

<Drive circuit>

A device for receiving an image signal from the main body 100 and supplying a signal to the liquid crystal panel 210 is configured to process a gate and a data signal. The data circuit board 221 that processes the data signal is mounted on a printed circuit board with a circuit element (not shown) such as an integrated circuit or a resistor. The data circuit board 221 includes a synchronization signal, a data signal, and the like. Is processed and supplied to the thin film transistor of the liquid crystal panel 210 at a predetermined voltage. The signal formed in the data circuit board 221 is supplied to the thin film transistor through the integrated circuit 224 formed in the data carrier 222 (TCP).

On the other hand, the gate circuit board 223 processing the gate signal sequentially supplies a predetermined voltage to the thin film transistor for driving.

<Inductive element>

3 shows a light guide element. The light guide element is installed under the liquid crystal panel 210. The light source 231, the first reflecting plate 232, the second reflecting plate 233, the light guide plate 234, and the luminous flux control element 235 are elements that generate light flowing into the liquid crystal panel 210 and guide the light in a predetermined direction. It consists of.

4 shows a partial cross section of the light source 231, where the entire light source 231 has a long rod shape. A rod-shaped electrode 241 is provided inside the light source 231, and when electrical energy is supplied to the electrode 241, electrons are emitted, such as neon (Ne), argon (Ar), mercury (Hg), and the like. The ultraviolet ray 245 is emitted as the ultraviolet ray emission gas 242 is excited, and the visible ray 246 is emitted when the ultraviolet ray 245 impinges on the fluorescent material 244 applied to the inner wall of the glass tube 243.

The light emitted from the light source 231 to the visible light 246 is guided to the light guide plate 234 while being reflected by the integrated or first reflecting plate 232. Light incident on the light guide plate 234 repeats transmission and reflection between the second reflecting plate 233 made of white PET and the upper surface 236 of the light guide plate 234.

As shown in FIG. 5, the lower surface of the light guide plate 234 is formed through a silk print or has a "V" -shaped pattern 252 and 253 with increasing density as it moves away from the light source. Reached light is scattered or reflected by the patterns 252 and 253 to the upper front surface, and is finally output to the upper surface 236 of the light guide plate 234.

However, since the light path emitted from the light guide plate 234 is concentrated in the oblique direction of the light guide element, the light flux control element 235 is used to change the light path to the central region of the light guide element. The light beam control element 235 is composed of a combination of the diffusion element 241 of FIG. 6, the light converging element 271 of FIG. 7, the polarization change element 281 of FIG. 8, and the protection element.

The diffusion element 241 of FIG. 6 is composed of large and small fine particles 263 formed on the support 262. The microparticles 263 disperse the light 264 with the concentrated path into the light 265 of the various paths.

The light converging element 271 of FIG. 7 is formed by forming a plurality of prisms 272 on one base 273, and the prism 272 converts the incident light 274 of several paths into the concentrated output light 275, respectively. Let's do it. The light converging element 271 may be used by stacking several sheets in order to obtain a uniformly focused light.

The polarization changing element 281 of FIG. 8 stacks multiple layers of polarization changing layers 282 that pass only specific polarizations and modulates various incident polarizations 283 into specific polarizations 284.

For example, light may be classified into S-polarized light and P-polarized light whose wavelength directions are orthogonal to each other, and S-polarized light is provided if S-polarized light 285 is incident and the polarization changing layer 282 has only P-polarized light. Is modulated to P polarized light 287 when it is emitted through a process reflected between several layers of polarization converting layers after incidence.

At this time, a polarization change element is disposed so that a specific polarization such as P polarization coincides with the polarization axis of the polarizing plate on the thin film transistor substrate 211 side of the liquid crystal panel 210 of FIG. 2, thereby increasing the amount of light incident through the polarizing plate and entering the liquid crystal layer. .

There is also a protection element (not shown) in the luminous flux control element 235, which includes a small amount of fine particles and has a property of diffusion, and is located on the light collecting element so that the prism of the light collecting element is the same as that of the liquid crystal panel. It prevents the prism from being damaged by other elements.

The luminous flux control element 235 described above is designed by the manufacturer to obtain maximum efficiency by any one or more combinations of the diffusion element 241, the light collecting element 271, the polarization change element 281, and the protection element.

<Support frame>

A first support frame and a second support frame are used to implement a single completed module by mounting a liquid crystal panel, a driving circuit, and an optical guide device of the liquid crystal display device.

As shown in the detailed exploded view of the liquid crystal display of FIG. 9, the first support frame 291 is shaped like a box having an accommodating space therein, and the light guide element 230 is positioned therein.

The liquid crystal panel 210 is positioned over the light guide device 230 over the panel support part 293 of the upper end of the first support frame 291. When the light guide element 230 and the liquid crystal panel 210 are seated on the first support frame 291, the light guide element 230 and the liquid crystal panel 210 are fixed to the second support frame 292.

The second support frame 292 is configured to have an open portion 501 and an edge portion 502 around it, and the second support frame 292 is an image of the liquid crystal panel 210 using the edge portion 502. The first support frame 291 is fastened by using the fastening groove 295 and the fastening tap 294 of the first support frame while covering an invalid area where information is not displayed.

The first support frame 291 is made of a white plastic material to efficiently reflect the light emitted from the light guide plate 234 to the side.

In addition, according to an embodiment of the present invention, the corresponding surface of the first or second support frames 291 and 292 to which the adhesive member is adhered is preferably surface treated to have a rough or rugged shape.

In addition, the second support frame 292 is preferably made of a metal material for driving circuit grounding.

<Adhesive member>

Embodiments according to the present invention mount the liquid crystal display device inside the display box using the adhesive member.

According to the embodiment, the liquid crystal display device 200 may be firmly fixed to the display box 400 by interposing the adhesive member 300 capable of double-sided adhesion between the liquid crystal display device 200 and the display box 400.

In addition, the adhesive member 300 includes a layer having an organic synthetic material having elasticity, and thus, the adhesive member 300 cushions when an impact is applied to the outside in the assembled state of the image display apparatus. In addition, the adhesive member 300 has an effect on electromagnetic shielding by including a metal-coated layer to prevent the charge.

Hereinafter, the adhesive member interposition method is demonstrated by FIG.

According to the exemplary embodiment of the present invention shown in FIG. 10, an adhesive member 300 is interposed between the bottom surface 296 of the first support frame 291 and the top surface 421 of the display box. The adhesive member 300 is primarily bonded to the bottom surface 296 of the first support frame, and is secondly bonded to the upper surface 421 of the display box, thereby completing the image display apparatus.

Preferably, the adhesive member 300 is first adhered to the upper surface 421 of the display box, and secondly to the bottom surface 296 of the first support frame 291, the image display device is completed.

The first support frame 291 may also have an adhesive surface for adhering to the adhesive member 300. The adhesive surface may have a concave surface in order to make the thickness of the entire image display element thinner than expected, and the adhesive surface may have a rough surface or a bumpy surface by being treated by a method such as scratching to improve the adhesive force. In addition, the adhesive surface may be formed on a part of the first support frame 291 or may be formed on the whole. In this case, when the adhesive surface is formed on a part, it may have various shapes such as a rectangle or a circle.

The adhesive member 300 according to FIGS. 11 and 12 has a structure having a first adhesive layer 302 and a second adhesive layer 303 on both upper and lower sides of the support 301.

In addition, the adhesive member 300 may be divided into a predetermined area as shown in FIG. 13 and bonded to each corner of the first support frame 291.

The support 301 is made of an organic synthetic material having elasticity and is preferably a PET material. In addition, the support 301 may be a metal coating, the metal coating is coated on the front surface of the adhesive member 300 to prevent the external emission of the image display device 130 of the electromagnetic wave emitted from the liquid crystal display device 200. The first adhesive layer 302 is a portion bonded to the first support frame 291. The second adhesive layer 292 is a portion bonded to the top surface 421 of the display box.

Preferably, the adhesive strengths of the first adhesive layer 302 and the second adhesive layer 303 of the adhesive member 300 are different from each other so that the adhesive member may not be damaged when detached for repair. For example, when the adhesive member 300 is first bonded to the upper surface 421 of the display box, the adhesive strength of the second adhesive layer 303 is stronger than that of the first adhesive layer 302 so that the liquid crystal display 200 When the separation from the display box is not caused to damage the adhesive member (300). In addition, when the liquid crystal display device 200 is separated from the display box, in order to facilitate separation, a portion of the adhesive member is formed of a non-adhesive portion 304 which is not coated with an adhesive material as shown in FIG. 12. In such a structure, separation of the liquid crystal display device is performed from a position corresponding to the non-adhesive portion 304, thereby preventing damage to the adhesive member and damage to the liquid crystal display device.

Another embodiment of the present invention according to FIG. 14 is a case in which the first support frame 297 has one or more openings 298 for weight reduction.

FIG. 15 illustrates an embodiment of a method of embedding a liquid crystal display including a first support frame 291 having an opening 298 in the display of the opening 298.

When a second reflecting plate (not shown) is exposed on the first supporting frame 291, and the second reflecting plate is bonded to the adhesive member 305 to remove the liquid crystal display device 200 from the adhesive member, damage is applied. Therefore, the adhesive member 305 is to be bonded only to the non-opening portion 299 of the first support frame 297.

As shown in FIG. 16, the non-opening area 306 of the adhesive member is preferably designed to be narrower than the non-opening area 299 of the first support frame 291, without bonding to the reflecting plate within an error range of alignment during bonding. It should be bonded to the non-open area of the first support frame 291.

Another embodiment for achieving this purpose is that the adhesive member does not have an open region as shown in FIG. 17, but may not have an adhesive layer in the open region of FIG. 16. Preferably, the bonding member has a thick portion and a thin portion. The light guide plate is thicker on the side where the light source is located and thinner as it moves away from the light source, so that the thick portion of the bonding member is positioned far from the light source of the liquid crystal display device in order to maintain the overall flatness of the image display device.

Preferably, the bottom surface of the first support frame 291 or the top surface of the display box 400 has a rough or uneven surface. As the surface is roughened, the first support frame 291 has an increased bonding force with the adhesive member 300.

Preferably, as shown in Figure 13, the adhesive member is present in a plurality of separated between the display box 400 and the first support frame 291. Therefore, the weight of the image display apparatus is reduced, and adhesion and detachment are easy. In addition, the separated adhesive member 300a at the light source side has a relatively thin adhesive member than the separated adhesive member 300a at the opposite light source.

The image display device according to the present invention described above provides a liquid crystal display device, an image display device, and a computer which are easy to assemble, have a thin, light, and efficient size. In addition, since it is easy to devise a modified liquid crystal display device, an image display device and a computer within the scope not departing from the gist of the present invention, it will be included in the gist of the present invention.

According to the present invention, the assembling of the image display device is easy and the workability is improved, and the liquid crystal display device is thin and light.

In addition, since the impact applied to the liquid crystal display is buffered by the adhesive member and may have a shielding effect against electromagnetic waves, there is an effect of improving the reliability of the product.

Claims (30)

A liquid crystal panel comprising two transparent substrates including a liquid crystal layer, a driving circuit for driving the liquid crystal layer, a light source disposed under the liquid crystal panel and supplying light to the liquid crystal panel; A liquid crystal display device including a light guide device, a first support frame accommodating the light guide device, and a second support frame coupled to the first support frame to cover an effective area of the liquid crystal panel; A display box accommodating the liquid crystal display device; And And an adhesive member disposed between the first support frame and the display box to fix the liquid crystal display device to the display box. The image display apparatus of claim 1, wherein the adhesive member comprises a support layer made of an organic synthetic material having elasticity, and a first adhesive layer and a second adhesive layer formed on both surfaces of the support layer, respectively. delete The image display apparatus of claim 2, wherein the first adhesive layer and the second adhesive layer have different adhesive strengths. The image display apparatus of claim 2, wherein at least one of the support layer, the first adhesive layer, and the second adhesive layer is coated with a metal to shield electromagnetic radiation. The image display apparatus of claim 2, wherein a non-adhesive portion to which no adhesive material is applied is formed on at least one surface of the adhesive member. The image display apparatus according to claim 1, wherein the adhesive member is composed of a plurality of planarly separated members. The image display apparatus according to claim 1, wherein at least one surface of an adhesive surface of the display box and the first support frame in contact with the adhesive member is roughened. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete 8. The image display apparatus according to claim 7, wherein the adhesive member separated into a plurality is formed on the light source side relatively thinner than the opposite side. The image display apparatus of claim 1, wherein the first support frame has at least one open portion and an unopened portion at its center. 28. The image display apparatus of claim 27, wherein the adhesive member is disposed at a position corresponding to an unopened portion of the first support frame. The image display apparatus according to claim 28, wherein the width of the adhesive member is smaller than the width of the non-opening portion of the first support frame at the corresponding position. 28. The image display apparatus of claim 27, wherein the adhesive member does not have an adhesive material at a position corresponding to the opening of the first support frame.

Images