KR101010190B1 - Liquid Crystal Display Module and Portable Phone Having the Same - Google Patents

Abstract

A liquid crystal display (LCD) module and a terminal having the same are disclosed. A liquid crystal display (LCD) module of the present invention comprises: an LCD panel on which an image is formed; And a back light unit (BLU) disposed at a rear side of the LCD panel to support the LCD panel and having a light guide plate (LGP) having a substantially rectangular shape, wherein the light guide plate is parallel to the LCD panel. A main plate portion disposed; And a deformation preventing portion provided to increase by a predetermined thickness than a thickness of the body plate portion in at least one region of the outer region of the body plate portion to prevent deformation of the body plate portion. According to the present invention, the deformation of the light guide plate can be prevented by supplementing the structure of the light guide plate without increasing the thickness of the backlight unit, thereby preventing warping and warping of the light guide plate.

Liquid Crystal Display (LCD) Module, Light Guide Plate, Deformation Bottom

Description

Liquid crystal display (LCD) module and terminal with same {Liquid Crystal Display Module and Portable Phone Having the Same}

The present invention relates to a liquid crystal display (LCD) module and a terminal having the same, and more particularly, to compensate for the structure of the light guide plate without increasing the thickness of the backlight unit and to prevent deformation that may occur in the process of manufacturing the light guide plate. The present invention relates to a liquid crystal display (LCD) module capable of preventing warping and warping of a light guide plate and a terminal having the same.

The terminal refers to a personal cellular phone including a PCS phone, a PDA and the like. For modern people, terminals have become a necessity, not a luxury item. Therefore, terminal manufacturers are quickly launching new products with new functions, and the terminal manufacturing technology is leading electronic and electrical technologies. .

Such a terminal may be divided into an input device for inputting information and a display device for outputting input information or displaying external information. Among the display devices, the liquid crystal display device is in the spotlight as a next generation display device, and accordingly, it is used in various electronic products.

According to the size, a liquid crystal display device may be classified into a small liquid crystal display (LCD) module mounted in a mobile phone or a digital camera, and a large liquid crystal display (LCD) module used in a monitor of a TV or a computer.

1 is a cross-sectional view of a liquid crystal display (LCD) module according to a conventional embodiment.

As shown in the figure, the liquid crystal display (LCD) module 10 according to an exemplary embodiment of the present invention, the LCD panel 30, the backlight unit 40, and the mold frame 50 supporting them, the image is formed , a mold frame, and a chassis 60 surrounding and enclosing the mold frame 50.

The LCD panel 30 is a portion having a screen display area capable of substantially displaying images, and generally includes a color filter substrate 31, a thin film transistor substrate 32, and a liquid crystal layer (not shown) injected therebetween. And polarizing plates 33 and 34 coupled to the upper surface of the color filter substrate 31 and the rear surface of the thin film transistor substrate 32, respectively. The color filter substrate 31 has a smaller size than the thin film transistor substrate 32, and a driving chip (not shown) is mounted in an unattached region of the thin film transistor substrate 32 to which the color filter substrate 31 is not attached.

 The backlight unit 40 is employed in such a manner that the LCD panel 30 does not emit light by itself and adjusts the light transmittance so that a predetermined image is formed on the LCD panel 30. Play the role of projecting.

The backlight unit 40 is a direct method of projecting light toward the front of the LCD panel 30 by arranging a light source on one side of the LCD panel 30 and a line on one side or a plurality of side surfaces of the LCD panel 30. A light source or a point light source may be arranged to divide the light guide plate 41, the reflective sheet 42, and the diffusion sheets 43 and 44 into an edge method for reflecting and diffusing light rays. At present, terminals such as mobile communication terminals such as mobile phones, PDAs, etc. mainly adopt the latter method.

The backlight unit 40 is combined with the LCD panel 30 to the mold frame 50 having an empty rectangular loop shape and then supported by the chassis 60 so as to support one liquid crystal display (LCD) module 10. Implement

The liquid crystal display (LCD) module 10 and the terminal having the same have been gradually slimmer and smaller in size as data communication, image realization technology, and liquid crystal technology have developed, and as required by the consumer. Accordingly, the liquid crystal display (LCD) module 10 is required to be slimmer. In particular, researches for downsizing the thickness of the backlight unit and the light guide plate, which occupy a considerable proportion of the thickness of the display module, have been conducted.

However, when the thickness of the LGP is made thin to a thin level, the aspect ratio of the LGP becomes very large. This will cause problems in terms of the functional and efficient aspects of the light guide plate as well as various problems in manufacturing the light guide plate itself.

For example, there is a problem in that the light guide plate is deformed due to an ejection force acting on a portion to which an eject pin of the light guide plate is coupled in the process of taking out the light guide plate from the mold during manufacture of the light guide plate. In other words, the light output plate acts on the extraction pins of the light guide plate, causing the light guide plate to bend, and an unexpected external force remains during drying and curing after taking out, resulting in abnormal deformation. The deformation of the light guide plate causes light leakage or light distortion.

Therefore, it is required to design the structure of the light guide plate which can prevent deformation generated in the light guide plate manufacturing process. In particular, the structure of the light guide plate is improved so that the light guide plate can be manufactured without bending or warping without increasing the thickness of the display module. By doing so, a method for improving the structural strength of the light guide plate is required.

An object of the present invention is to supplement the structure of the light guide plate without increasing the thickness of the backlight unit to prevent deformation that may occur during the light guide plate manufacturing process to prevent bending and distortion of the light guide plate (LCD) module To provide.

The object is, according to the invention, an LCD panel (LCD Panel) is formed image; And a backlight unit disposed at a rear side of the LCD panel to support the LCD panel, the backlight unit having a light guide plate (LGP) having a substantially rectangular shape, wherein the light guide plate is disposed alongside the LCD panel. Plate part; And a deformation stop unit provided to increase by a predetermined thickness than the thickness of the main body plate in at least one region of the outer region of the main body plate to prevent deformation of the main body plate. Is achieved by

The deformation preventing portion is disposed on all of the circumferential surface of the main body plate portion, and integrally injection molded with the main body plate portion, and during the injection molding, the deformation preventing portion defines a coupling place of an eject pin for ejecting the light guide plate from a mold. Can provide.

The LCD panel may further include a mold frame surrounding the LCD panel and the backlight unit, and the deformation preventing portions of the mold frame and the light guide plate may be partially contacted with each other.

The mold frame, the frame body; And a first extension flange part extending in parallel with the LCD panel on one side of the frame body, and a bottom surface of the front end portion of the deformation preventing part may be disposed above the first extension flange part.

The front end portion of the deformation preventing portion may be provided closer to the frame body side than the virtual outline of the LCD panel formed in the thickness direction.

The upper edge of the distal end portion of the deformation stop may be chamfered.

The second body may further include a second extension flange portion extending in a direction crossing the first extension flange portion on the other side of the frame body.

The mold frame, the frame body; One side of the frame body includes a second extension flange extending in the direction crossing the LCD panel, the upper surface of the front end of the deformation stop portion may be disposed below the frame body.

A chassis made of a metal material disposed on an outer surface of the mold frame to reinforce the mold frame, wherein the chassis comprises: a vertical portion disposed on an outer surface of the frame body; And a horizontal portion bent at one side of the vertical portion and having an end portion disposed to a position of the second extension flange portion.

The upper surface of the body plate portion and the upper surface of the deformation preventing portion higher than this is connected stepwise, the connecting line may be any one of an oblique line or a vertical line.

According to the present invention, the deformation of the light guide plate can be prevented by supplementing the structure of the light guide plate without increasing the thickness of the backlight unit, thereby preventing warping and warping of the light guide plate.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

2 is a perspective view of a terminal equipped with a liquid crystal display (LCD) module according to an embodiment of the present invention.

As shown in this figure, the terminal 1 according to the embodiment of the present invention is a folding portable telephone 1, which is a folder part for opening and closing the main body part 2 and the front surface of the main body part 2. (3), the hinge (9, Hinge) provided between the main body portion 2 and the folder portion (3) so that the main body portion 2 and the folder portion (3) can rotate in a mutually relative direction, the main body Battery 4 is detachably coupled to the back of the unit (2).

A plurality of key buttons 5 are provided on the inner surface of the main body 2. The lower part of the key buttons 5 is provided with a microphone 6 for transmitting a voice, and the upper function buttons 7 are provided. The function buttons 7 are used to search for various menus stored in the terminal 1 or select a function, unlike the key buttons 5 for inputting a phone number or a letter.

Above the inner surface of the folder section 3, a receiver 8 for receiving voices from the counterpart is formed. In the lower portion of the receiver 8, a liquid crystal display (LCD) module 110 including a phone number, a state of charge of the battery 4, a vibration state, an alarm state display, and the like is formed.

FIG. 3 is a perspective view of the liquid crystal display (LCD) module shown in FIG. 2, FIG. 4 is an exploded perspective view of the liquid crystal display (LCD) module shown in FIG. 3, and FIG. 5 is a liquid crystal display (LCD) shown in FIG. 3. Schematic cross section of the module.

As shown in these figures, the liquid crystal display (LCD) module 110 according to an embodiment of the present invention, the LCD panel having a screen display area capable of substantially image display and the image is formed on the screen display area ( 130, an LCD panel, a backlight unit 140 disposed on a rear side of the LCD panel 130 to support the LCD panel 130, and having a light guide plate 141 having a substantially rectangular shape, and an LCD. A mold frame 150 supporting and supporting the panel 130 and the backlight unit 140 is included, and a chassis 160 to which the mold frame 150 is coupled.

First, as illustrated in FIGS. 3 to 5, the LCD panel 30 includes a color filter substrate 131 in which a predetermined color is expressed while light passes, a thin film transistor and a pixel electrode in a matrix form. The thin film transistor substrate 132, the liquid crystal layer (not shown) injected between them, and the color filter substrate 131 are attached to an unattached region of the thin film transistor substrate 132 to which the thin film transistor substrate 132 is not attached. A driving chip (not shown) for driving is provided. In addition, polarizers 133 and 134 (refer to FIG. 5) are attached to an upper surface of the color filter substrate 131 and a lower surface of the thin film transistor substrate 132.

The backlight unit 140 is disposed on the rear side of the LCD panel 130 to project light to the LCD panel 130. As shown in FIGS. 4 and 5, the light guide plate 141 and the light guide plate ( The reflective sheet 144 disposed below the 141 and the pair of diffusion sheets 145 and 146 disposed above the light guide plate 141 are bonded between the LCD panel 130 and the mold frame 150. FPCB including a shading tape 145 which blocks light from leaking to the outside, and a FPC (Flexible Printed Circuit) coupled to one side of the LCD panel 130 and including a large scale integration (LSI) for driving. (Flexible Printed Circuit Board, not shown) and the LED mounting FPCB 148 is provided with a plurality of light emitting diode lamps (not shown) for emitting light to the light guide plate 141.

As described above, the thickness of the liquid crystal display (LCD) module 110 and the terminal having the same is becoming thinner. Therefore, it may be essential that the thickness of the light guide plate 141, which occupies a large proportion of the thickness of the backlight unit 140 of the liquid crystal display (LCD) module 110, should also be thin. Currently, the thickness of the light guide plate 141 is going down to about 0.25 T (mm).

However, as the thickness of the light guide plate 141 becomes thinner, an aspect ratio of the light guide plate 141 itself becomes larger, which causes some problems in the design and manufacture of the light guide plate 141. In general, the manufacturing process of the light guide plate 141 uses injection molding. Injection molding refers to a molding method in which a plastic material is melted and pressed into a mold using an injection machine. The plastic material press-fitted in the mold die is cured and then uses an eject pin to facilitate ejection from the mold. An axial force exerted on the ejection pin as the molding becomes thinner. Will cause deformation in the molding.

In more detail, when the thickness of the light guide plate 141 is designed to be thinner or less than the thickness of the light guide plate 141, the ratio of the plate surface becomes relatively large and acts on the extraction pin in the process of taking out the light guide plate 141. Due to the light output, the light guide plate 141 may be bent or warped, and the light guide plate 141 may be cured in a deformed state to cause mechanical and functional defects of the light guide plate 141.

Therefore, it is necessary to correct the aspect ratio of the light guide plate 141. In order to minimize the deformation that may occur in the process of manufacturing the light guide plate 141, it is urgently required to increase the thickness of the light guide plate 141 as a whole, but this is because the thickness of the entire backlight unit 140 and the thickness of the liquid crystal display (LCD) module 110 are It is not preferable because it results in increasing.

In order to solve this problem, the liquid crystal display (LCD) module 110 of the present embodiment has a thickness along the outer periphery of the light guide plate 141 in the manufacturing process of the light guide plate 141, as shown in FIGS. 4 and 5. Is provided with a deformation preventing portion 143 which prevents deformation of the light guide plate 141, thereby adjusting the plate-to-thickness ratio of the light guide plate 141, while the thickness of the entire LCD display module 110 is the same or decreased. Be sure to This is possible by adjusting the structure of the chassis 160 and the arrangement of the diffusion sheets 145 and 146 coupled to the upper surface of the light guide plate 141, which will be described later.

As shown in detail in FIGS. 4 and 5, the light guide plate 141 of the present embodiment is formed in an outer region of the main body plate part 142 and most of the main body plate part 142 and forms the front end part 143a. The upper surface includes a deformation preventing portion 143 having a structure in which the LCD panel 130 is in contact with the rear surface of the thin film transistor substrate 132 and the side or bottom surface of one end portion 143a is coupled to the mold frame 140. .

The body plate portion 142 is formed in a substantially rectangular tubular body to form most of the surface of the light guide plate 141 and is disposed in parallel with the LCD panel 130. However, the light guide plate 141 may be provided to be inclined so that the upper surface toward the diffusion sheets 145 and 146 is flat and the lower surface thereof becomes narrower from one end to the other end.

The deformation preventing part 143 is formed in all the outer regions of the body plate part 142, and the thickness is formed to increase by a predetermined thickness than the thickness of the body plate part 142. 1, the predetermined thickness is formed equal to or smaller than the 'A' section. That is, the 'A' section, which is the thickness of the backlight unit including the chassis thickness of the prior art and the thickness of the horizontal portion of the mold frame, becomes a reference. In this embodiment, the thickness of the light guide plate 141 is substantially the same as the 'A' section. Let's do it.

As shown in FIG. 5, the distal end portion 143a of the deformable stop portion 143 is provided closer to the frame body 151 than the virtual outline of the LCD panel 130 formed in the thickness direction. As a result, the lower surface of the tip portion 143a and the upper surface of the first extension flange portion 152 of the mold frame 150 may be in contact with each other. And the upper edge of the front-end | tip part 143a of the deformation | transformation stop part 143 is chamfered.

The upper surface of the body plate portion 142 and the upper surface of the deformation preventing portion 143 higher than this is connected stepwise, the connecting line is formed in an oblique line has a tapered shape. The diffusion sheets 145 and 146 are accommodated in the section B of the recessed portion of the body plate 142 and stacked on the upper surface of the light guide plate 141.

Since the upper surface of the strain blocking portion 143 and the thin film transistor substrate 132 are in direct contact coupling, a space (Section B) is provided on the upper surface of the body plate portion 142 having a lower height than the upper surface of the strain blocking portion 143. Since the diffusion sheets 145 and 146 are stacked in this space, the thickness of the entire liquid crystal display (LCD) module 110 may be reduced by the thickness of the diffusion sheets 145 and 146.

The body plate portion 142 and the deformation preventing portion 143 may be manufactured integrally, and the material of the light guide plate 141 is generally made of high quality resin such as PMMA having excellent mechanical and optical properties.

Thus, unlike the light guide plate 141 which is a substantially rectangular tubular body in the prior art, the light guide plate 141 provided with the deformation preventing portion 143 of the present embodiment has a thickness by increasing the thickness on the outer region of the light guide plate 141. Resistance to directional deformation is increased.

In other words, the aspect ratio of the light guide plate 141 can be greatly alleviated so that the deformation of the light guide plate 141 can be withstand. Complementing the structure of the light guide plate 141, the light guide plate 141 can withstand relatively well the output that may occur in the manufacturing process of the light guide plate 141, in particular, near the eject pin when taking out from the mold, the light guide plate 141 ) Warping or warping may be prevented, thereby minimizing mechanical and functional defects of the light guide plate 141.

As shown in FIG. 1, the liquid crystal display (LCD) module 10 of the conventional embodiment may include a mold frame 50 attached to a polarizing plate 34 attached to a lower surface of the thin film transistor substrate 32, and a light guide plate. The chassis 60 is coupled to the bottom surface of 41 to determine the thickness of the entire LCD module.

On the contrary, in the liquid crystal display (LCD) module 110 of the present embodiment, the thickness of the backlight unit 140 may be increased due to the increase in the thickness of the deformation preventing portion 143 compared to the body plate portion 142. However, as shown in FIGS. 3 to 5, the deformation preventing unit 143 omits the chassis 160 and the diffusion sheets 145 and 146 by the thickness increase that contributes to the backlight unit 140. It is possible to equalize or reduce the thickness of the (LCD) module 110. That is, the region 160 where the chassis 160 coupled to the rear surface of the light guide plate 141 is omitted and the diffusion sheets 145 and 146 on the upper portion of the light guide plate 141 are coupled is limited to the upper surface area (section B) of the body plate part 142. In this case, the overall thickness can be reduced to be the same as the thickness of the liquid crystal display (LCD) module 10 of the conventional embodiment, or reduced, so that the overall thickness can be reduced without increasing the thickness of the overall liquid crystal display (LCD) module 110. will be.

The reflective sheet 144 is disposed at the rear side of the light guide plate 141 and has an area substantially the same as that of the light guide plate 141, and not only prevents light from leaking to the lower portion of the light guide plate 141, but also reflects the leaked light. It guides to the LCD panel 130 through the light guide plate 141. One surface of the reflective sheet 144, that is, the surface facing the light guide plate 141 forms a mirror-like mirror surface, thereby improving light reflection efficiency.

The diffusion sheets 145 and 146 are provided on the light guide plate 141 to diffuse light generated from the light guide plate 141. Although no pattern is shown on the surfaces of the diffusion sheets 145 and 146 in the drawing of the present embodiment, a plurality of dot patterns are formed continuously on the surfaces of the diffusion sheets 145 and 146 to diffuse light efficiently. Can be. In addition, although light is uniform due to light diffusion, a prism sheet having a prism pattern that exerts a light focusing effect may be used to prevent a decrease in brightness caused by side effects. In the present embodiment, a diffuser 148 is further provided below the lower diffusion sheet 145, but the diffuser 148 is not necessarily provided.

The light shielding tape 145 is disposed between the LCD panel 130 and the light guide plate 141 to shield light from the light emitting diode lamp from passing through the light guide plate 141 to a portion outside the screen display area of the LCD panel 130. As a result, the sharpness of the screen implemented through the LCD panel 130 may be improved. For this purpose, the light blocking tape 145 is coupled between the top surface of the strain preventing unit 143 and the bottom surface of the thin film transistor substrate 132 of the LCD panel 130. Therefore, it is possible to prevent the light emitted from the light emitting diode lamp 149 from leaking therebetween.

By the configuration of the backlight unit 140, after the light emitted from the light emitting diode lamp (not shown) is incident on the light guide plate 141, Proceeding along the plate surface of the light guide plate 141, a part of the light is directed to the diffusion sheets 145 and 146 on the upper part of the light guide plate 141 by reflection and scattering, and the other is a reflective sheet positioned below the light guide plate 141. Head to (144). The light directed to the reflective sheet 144 is reflected by the reflective sheet 144 and moved back to the diffusion sheets 145 and 146 toward the light guide plate 141. Light diffused through the diffusion sheets 145 and 146 is uniformly diffused while passing through the diffusion sheets 145 and 146 and then incident on the LCD panel 130. Accordingly, the user can view an image formed in the screen display area of the LCD panel 130.

The mold frame 150 buffers the shock applied to the LCD panel 130, for example, dropping the terminal 1. Therefore, the mold frame 150 is made of polycarbonate, for example, a soft material that can be shock-absorbed, and thus absorbs shock even when an impact is applied to the liquid crystal display (LCD) module 110 from the outside. The mold frame 150 is flexibly elastically deformed in the direction to stably support the LCD panel 130 and the backlight unit 140 supported therein. Mold frame 150 is preferably produced integrally by injection molding.

2 to 5, the mold frame 150 is provided in a rectangular frame having a closed loop shape to support the LCD panel 130 and the backlight unit 140 therein. The mold frame 150 may include a frame body 151, a first extension flange 152 extending in parallel with the LCD panel 130 on one side of the frame body 151, and the other of the frame body 151. The second extension flange 153 extends in a direction crossing the first extension flange 152 from the side. The frame body 151, the first extension flange part 152, and the second extension flange part 153, which form the mold frame 150, are preferably manufactured integrally, but are not necessarily the same.

The frame body 151 is a part forming the appearance of the mold frame 150. In the present embodiment, since the LCD panel 130 has a rectangular shape, the frame body 151 also has a rectangular shape corresponding thereto. However, if the LCD panel 130 is not rectangular, the frame body 151 may have another shape appropriately.

The first extension flange 152 is provided on the inner wall of the frame body 151 as a means for coupling with the light guide plate 141. The first extension flange 152 is A portion of the deformation preventing portion 143 which extends along the plate surface direction of the LCD panel 130 from the inner side wall of the frame body 151 to support the front end portion 143a of the deformation blocking portion 143 of the light guide plate 141. The lower surface and the upper surface of the first extension flange portion 52 are coupled.

The second extension flange 153 is On one side of the frame body 151 is provided extending in a direction crossing the LCD panel 130. After the chassis 160 and the mold frame 150 are coupled to each other, the bottom surface of the chassis 160 and the second extension flange portion 153 of the mold frame 150 may form one surface.

The lower surface of the first extension flange portion 152 is stepped from the lower surface of the second extension flange portion 153 to form a groove portion 152a. The peripheral portion of the reflective sheet 144 is partially inserted into the groove portion 152a. When the reflective sheet 144 is inserted into the groove 152a, the bottom surface of the reflective sheet 144 and the bottom surface of the second extension flange portion 153 may form one surface. The reflective sheet 144 may be attached to the mold frame 150 by an adhesive or a tape 144a.

As such, in the embodiment of the present invention, the light guide plate 141 replaces the configuration of the horizontal portion (section A of FIG. 1) of the mold frame according to the prior art, and the deformation preventing portion 143 of the light guide plate 141 within this range. It can be designed in the thickness of the) to increase the mechanical strength of the light guide plate 141 can not only prevent the deformation that may occur in the manufacturing of the light guide plate 141, but also of the mold frame 150 and the deformation preventing portion 143 There is an advantage that the connection can be more robust than the conventional.

On the other hand, a non-contact section B (refer to FIG. 3) is formed on the upper surface of the body plate portion 142, which is a central region of the light guide plate 141 which does not directly contact the polarizer 132 and the light guide plate 141 of the LCD panel 130. Although there is a non-contact section, the area of the LCD module 130 may be relatively reduced in comparison with the prior art, but this is for explaining the structure of the deformation preventing unit 143 in detail and the plate direction of the deformation preventing unit 143 is described. The result is exaggerated. Therefore, if the length of the deformation preventing portion 143 of the light guide plate 141 is equal to the flange portion (section C of FIG. 1) of the mold frame 150 according to the related art (FIGS. 5 and 6). See section C.) The LCD panel 130 may be configured to have the same area as the LCD panel 130.

On the other hand, the mold frame 150 has the advantage of absorbing the external shock to some extent because it has a property that can be flexibly deformed, on the contrary, it is not expected that excellent strength.

Therefore, in order to implement excellent strength, as shown in FIG. 1, the chassis surrounding the mold frame 50 is coupled to the remaining portion of the chassis except for the front surface of the LCD panel 30, that is, the mold frame 50. The method of enclosing the side and the back of the backlight unit 40 and being coupled is actually applied.

However, when completely covering the back of the backlight unit 40 of the prior art, there is a problem that not only the material cost of the entire liquid crystal display (LCD) module 10 is large, but also the thickness is increased, making it difficult to meet slimming. When the thickness of the light guide plate 41 is increased to prevent deformation during injection molding of the light guide plate 41, the thickness of the entire liquid crystal display (LCD) module 10 is further increased.

Accordingly, in order to solve this problem, in the present embodiment, as shown in FIG. 5, the structure of the chassis 160 is improved as follows. In order to compensate for the increase in the thickness of the deformation preventing part 143, the LCD 160 of the present invention includes a chassis 160 that surrounds the mold frame 150 and is coupled to the lower side of the mold frame 150. The entire liquid crystal display (LCD) module 110 is made slim by enclosing and coupling only a part of the region.

To this end, the chassis 160 of the present embodiment includes a vertical portion 161 disposed on an outer surface of the frame body 151 and a bending portion formed at one side of the vertical portion 161, and an end portion 162a of the second extension flange portion. And a horizontal portion 162 disposed up to the position of 153.

The vertical portion 161 is completely wrapped around the side of the frame body 151 is coupled.

The horizontal portion 162 is bent at one side of the vertical portion 161 and extends in parallel with the LCD panel 130 so that the end portion 162a is connected to the second extension flange portion 153 and the side surface. The lower surface of the horizontal portion 162, the lower surface of the second extension flange portion 153 of the mold frame 150, and the lower surface of the light guide plate 140 may form one surface.

The chassis 160 serves to prevent the mold frame 150 from being arbitrarily deformed by wrapping and supporting an outer portion of the mold frame 150. Therefore, the chassis 160 is preferably made of a relatively stronger material, for example, stainless steel (SUS) sheet than the mold frame 150.

As such, the center area of the chassis 160 is deleted and only the outer edge of the chassis 160 is configured so that the thickness increase of the deformation stop 143 of the light guide plate 141 can be replaced by the thickness decrease of the chassis 160. In this way, the deformation preventing unit 143 may be formed without increasing the thickness of the entire LCD display module 110, and the bending and warping of the light guide plate 141 may be minimized through the deformation preventing unit 143. It becomes possible.

Hereinafter, a liquid crystal display (LCD) module according to another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

6 is a schematic cross-sectional view of a liquid crystal display (LCD) module according to a second embodiment of the present invention. Hereinafter, only the parts that are different from the above-described first embodiment will be concentrated and described, and the same configuration will be avoided.

As shown in the figure, the liquid crystal display (LCD) module 210 according to another embodiment of the present invention, the LCD panel having a screen display area capable of substantially image display and the image is formed on the screen display area ( 230, an LCD panel, a backlight unit 240 disposed on the rear side of the LCD panel 230, supporting the LCD panel 230, and having a light guide plate having a substantially rectangular shape, and an LCD panel 230. And a mold frame 250 that supports and is coupled to the backlight unit 240, and a chassis 260 to which the mold frame 250 is coupled.

As shown in FIG. 6, the liquid crystal display (LCD) module 210 of the present embodiment includes a main light guide plate 242 forming most of the surfaces, and an increase in thickness along an outer circumference of the light guide plate 241. The deformation preventing portion 243 is prevented from deformation of the 241.

Deformation blocking portion 243 is formed in all the outer region of the body plate portion 242, the front end portion 243a of the deformation blocking portion 243, compared to the virtual outline of the LCD panel 230 formed in the thickness direction It is provided to be closer to the main body 251 side. As a result, the upper surface of the tip portion 243a and the lower surface of the frame body 251 of the mold frame 250 are partially contacted, and the lower surface of the second extension flange portion 253 and the lower surface of the deformation preventing portion 243 are one surface. Can be formed.

The upper surface of the body plate portion 242 and the upper surface of the deformation preventing portion 243 higher than this are connected stepwise, increasing the area of the body plate portion 242 and relatively reducing the area of the deformation blocking portion 243, while the body plate portion A connection line between the upper surface of 242 and the upper surface of the deformation preventing portion 243 may be formed as a vertical line. The diffusion sheets 245 and 246 are accommodated in the section B of the recessed portion of the body plate 242 and stacked on the upper surface of the light guide plate 241.

Alternatively, the shape of the upper side of the light guide plate 241 adopts the shape of the light guide plate 141 of the first embodiment of the light guide plate 241 shown in FIG. 5 and the lower side of the light guide plate 241 of the second embodiment shown in FIG. ), The deformation preventing portion 243 may be provided.

The second extension flange is formed in the mold frame 250. In addition, a portion of the lower portion of the frame body 251 and the front end portion of the deformation preventing portion 243 may be in contact with each other, and the bottom surface of the second extension flange portion 253 and the bottom surface of the deformation blocking portion 243 may form one surface. .

As such, the area where the chassis 260 coupled to the rear surface of the light guide plate 241 is omitted and the diffusion sheets 245 and 246 on the upper portion of the light guide plate 241 are coupled to the upper surface area (section B) of the main body plate part 242. While limited to the recessed arrangement, the deformation preventing portion 243 is formed in the outer region of the light guide plate 241 to prevent deformation.

In addition, by providing the shapes of the chassis 260 and the mold frame 250 to correspond to the shape of the light guide plate 243 having an increased thickness, it is possible to realize slimming without increasing the thickness of the entire LCD display module 210. It can be.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to belong to the claims of the present invention.

1 is a cross-sectional view of a liquid crystal display (LCD) module according to a conventional embodiment.

2 is a perspective view of a terminal equipped with a liquid crystal display (LCD) module according to an embodiment of the present invention.

FIG. 3 is a perspective view of the liquid crystal display (LCD) module shown in FIG. 2.

FIG. 4 is an exploded perspective view of the liquid crystal display (LCD) module shown in FIG. 3.

FIG. 5 is a schematic cross-sectional view of the liquid crystal display (LCD) module shown in FIG. 3.

6 is a schematic cross-sectional view of a liquid crystal display (LCD) module according to a second embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: terminal 110: liquid crystal display (LCD) module

130: LCD panel 140: backlight unit

141: light guide plate 143: deformation preventing portion

150: mold frame 160: chassis

Claims (11)

An LCD panel on which an image is formed; And A backlight unit disposed on a rear side of the LCD panel to support the LCD panel, the backlight unit including a light guide plate (LGP) having a rectangular shape, The light guide plate, A main plate portion arranged in parallel with the LCD panel; And A deformation preventing portion provided to increase a predetermined thickness than a thickness of the body plate portion in at least one region of the outer region of the body plate portion to prevent deformation of the body plate portion, The deformation preventing portion is disposed on all of the circumferential surface of the body plate portion is injection molded integrally with the body plate portion, And the deformation preventing part provides a coupling place of an eject pin for ejecting the light guide plate from a mold during the injection molding. delete The method of claim 1, Further comprising a mold frame for wrapping and supporting the LCD panel and the backlight unit from the outside, And a deformation preventing portion of the mold frame and the light guide plate. The method of claim 3, The mold frame, Frame body; And At one side of the frame body includes a first extension flange extending parallel to the LCD panel, Liquid crystal display (LCD) module, characterized in that the lower surface of the front end of the deformation stop portion is disposed above the first extension flange. The method of claim 4, wherein Liquid crystal display (LCD) module, characterized in that the front end portion of the deformation preventing portion is provided closer to the frame body side than the virtual outline of the LCD panel formed in the thickness direction. The method of claim 5, The upper edge of the distal end portion of the deformation stop portion is characterized in that the chamfer (chamfer) processing liquid crystal display (LCD) module. The method of claim 4, wherein And a second extension flange portion extending in a direction intersecting with the first extension flange portion on the other side of the frame body. The method of claim 3, The mold frame, Frame body; A second extension flange extending in a direction crossing the LCD panel on one side of the frame body; Liquid crystal display (LCD) module, characterized in that the upper surface of the front end of the deformation stop portion is disposed below the frame body. The method of claim 8, It is disposed on the outer surface of the mold frame further includes a chassis made of a metal material to reinforce the mold frame, The chassis, A vertical portion disposed on an outer surface of the frame body; And And a horizontal portion bent at one side of the vertical portion and having an end portion disposed to a position of the second extension flange portion. The method of claim 1, The upper surface of the body plate portion and the upper surface of the deformation preventing portion higher than this is connected stepped, the liquid crystal display (LCD) module, characterized in that any one of the diagonal line or vertical line. A terminal comprising the liquid crystal display (LCD) module according to any one of claims 1 to 10.

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