KR20140068655A - Supporter main and liquid crystal device moudle including the same - Google Patents

Abstract

The specification discloses a liquid crystal display device module. More specifically, the present invention relates to a liquid crystal device module including a supporter main, which facilitates a narrow bezel, reduces assembling times for a backlight unit and a liquid crystal panel, and reduces a fault due to an erroneous assembly. The liquid crystal display device module according to an embodiment of the invention comprises a liquid crystal panel; a backlight unit which is provided behind the liquid crystal panel to provide light; and a supporter main, on which the liquid crystal panel and the backlight unit are mounted, wherein at least one vision alignment hole, identifiable from an upper position, is formed on at least one side of the supporter main. Accordingly, at least one hole, which serves as a hole-type alignment mark, is formed on one side of the supporter main. Also, a cut hole corresponding to the alignment mark is formed on a shutter tape, such that an assembly process for the liquid crystal display device module is applied to automatic assembly equipment using the cut hole.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display (LCD)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display (LCD) module, and more particularly, to a liquid crystal display (LCD) module including a main bezel, a backlight unit, and a supporter main unit.

Flat panel displays (FPDs) have been replaced with conventional cathode ray tube (CRT) display devices to provide a compact and lightweight display device for portable computers such as notebook computers, PDAs, and mobile phone terminals as well as monitors of desktop computers Lt; RTI ID = 0.0 > system. ≪ / RTI > Currently available flat panel display devices include a liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED) The device is favored as a display device used for a mobile device, a computer monitor, and an HDTV due to its advantages such as excellent visibility, easy thinning, low power and low heat generation.

Since such a liquid crystal display device is a non-emissive device, a backlight unit for providing light to the liquid crystal panel is required. In order to mount such a backlight unit and a liquid crystal panel, to maintain rigidity from an external force and to support a back surface, a general liquid crystal display device is modularized by coupling with a mechanical structure such as a supporter main.

FIG. 1 is a view for explaining a conventional assembling process of a liquid crystal display module. Referring to FIG. 1, a conventional liquid crystal display module includes a liquid crystal panel 1 in which an operator displays an image through manual operation, And the supporter main body 3, which is disposed on the back surface of the panel 1 and on which the backlight unit for providing light is mounted, is sequentially placed on the assembly jig, and the assembling process is performed. Here, the supporter main body 3 is a state in which the light source of the backlight unit, the light guide plate, the optical sheet, and the like are coupled.

The liquid crystal panel 1 is mounted inside the supporter main body 3. The liquid crystal panel 1 is attached to the supporter main body 3 through a shielding tape (not shown) although not shown.

This assembly process is typically performed manually by an operator. Here, the supporter main body 3 and the assembly jig 5 should be designed such that the minimum assembly tolerances a1 and a2 for progressing the assembling process are secured, which is about ± 0.15 mm on both sides. Also, the minimum assembly tolerances b1 and b2 between the liquid crystal panel 1 and the assembly jig 5 are designed to be ensured to be about ± 0.2 mm when viewed from both sides.

However, as described above, the assembling process of the liquid crystal panel 1 and the supporter main body 3 is performed by manual operation, and accordingly an error occurs within the tolerance range. Such an assembling error is caused when the cut surface of the light- Causing the defect to occur.

The supporter main body 3 is mounted in close contact with one side of the assembly jig 5 (a1 = 0, a2 = 0.3 mm) and the liquid crystal panel 1 is brought into close contact with the other side of the assembly jig 5, (B1 = 0.4 mm, b2 = 0), the liquid crystal panel 1 and the supporter main body 3 can be mounted to be shifted up to 0.7 mm. As a result, the light-shielding tape adhered to the non-display area of the liquid crystal panel 1 enters the display area of the liquid crystal panel 1 and the end of the screen is covered, do. The poor visibility of such light-shielding cut surfaces becomes greater in the narrow bezel structure in which both sides of the supporter main body 3 are narrow.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a liquid crystal display device including a supporter main body having alignment means for introducing an automatic assembling process to improve an assembling error between a liquid crystal panel, a backlight unit, The purpose of the module is to provide.

Another object of the present invention is to provide a liquid crystal display (LCD) module including a main supporter which improves the misalignment of the backlight unit with respect to the LED substrate during the assembling process of the liquid crystal display module.

As described above, the liquid crystal display module according to the embodiment of the present invention includes the liquid crystal panel; A backlight unit provided on a rear surface of the liquid crystal panel to provide light; And a supporter main on which the liquid crystal panel and the backlight unit are mounted and on which at least one vision hole which can be distinguished from the upper portion is formed at one side end.

The vision hole may be any one selected from the group consisting of a circle, an ellipse, a triangle, a rectangle, a polygon, a star, and a cross.

And the vision hole is formed on the supporter main by an injection molding method.

The supporter main includes a first step portion on which the backlight unit is seated; And a second step portion on which a side end of the liquid crystal panel is seated, wherein the portion of the second step portion is further protruded or recessed.

The backlight unit includes a plurality of LED lamps; A lamp substrate on which the LED lamps are bonded in a line; A light guide plate whose light incidence surface faces the LED lamp; At least one optical sheet disposed on an upper surface of the light guide plate; And a reflection plate attached to a back surface of the light guide plate, wherein the lamp substrate is not exposed by the vision hole as it is seated on the first step.

And a light shielding tape interposed between the liquid crystal panel and the main supporter for shielding light leakage to the outside and attaching the liquid crystal panel to the supporter main.

The shading tape is characterized in that a cutting groove corresponding to the vision hole is formed.

The light-shielding tape may include a non-display area of the liquid crystal panel as an upper surface, and a side surface of the backlight unit and a supporter main body as a lower surface.

And a step difference compensating unit is further provided between the liquid crystal panel and the light shielding tape.

And the alignment mark corresponding to the vision hole is further formed on the liquid crystal panel.

According to the embodiment of the present invention, at least one hole having a hole-like shape serving as an alignment mark is formed on one side of the supporter main and a cutting groove corresponding to the alignment mark is formed in the light-shielding tape, The assembling process of the liquid crystal display module can be applied to the assembling equipment.

Therefore, there is an effect that reliability of the liquid crystal display device module can be improved by solving the problem of misassembly and improving the defective according to it.

Further, since the assembled state of the supporter main side can be identified even after attaching the light-shielding tape on the supporter main, there is another effect that the assembling failure in which the alignment of the LED substrate is misaligned can be detected.

1 is a view for explaining an assembly process of a conventional liquid crystal display device module.
2 is an exploded perspective view of a structure of a liquid crystal display module including a supporter main according to an embodiment of the present invention.
3 is a view for explaining an automatic assembling process applied to the liquid crystal display module of the present invention.
4 is a partial cross-sectional view of a liquid crystal display module according to an exemplary embodiment of the present invention.
Fig. 5 is a view showing the state before and after the combination of the supporter main body and the light shielding tape of the present invention. Fig.

Hereinafter, a supporter main according to a preferred embodiment of the present invention and a liquid crystal display module including the same will be described with reference to the drawings.

2 is an exploded perspective view of a structure of a liquid crystal display module including a supporter main according to an embodiment of the present invention.

Referring to the drawings, a liquid crystal display module of the present invention comprises a liquid crystal panel 100 for displaying an image, a backlight unit 120 for providing light, and a supporter main 130 for modulating the light.

The liquid crystal panel 100 includes a liquid crystal layer (not shown) interposed between the array substrate 101 and the color filter substrate 102 with a predetermined distance therebetween. A driving IC 105 is mounted on a non-display area on one side of the array substrate 101 to display an image as a control and video signal is applied to the pixels of the display area of the liquid crystal panel 100.

A thin film transistor as a switching element and various signal lines and electrodes are formed on the array substrate 101 constituting the liquid crystal panel 100. The color filter substrate 102 is formed with a color filter layer and a black matrix (BM) as color filter substrates for displaying RGB colors. The driving IC 105 may include at least one of a gate driving IC that provides a gate signal for driving the thin film transistor described above and a data driving IC that is connected to the thin film transistor and provides a data signal to the opposing two electrodes have. Although not shown, a flexible substrate (not shown) electrically connected to the driving IC 105 is bonded to one end of the array substrate 101, and a voltage, a clock signal, and the like for driving the external system, a power supply unit Control signals are received.

The structure of the liquid crystal panel 100 will be described in detail. A plurality of gate wirings and data wirings, which are arranged in one direction and define a plurality of pixel regions, are formed on the array substrate 111, A thin film transistor is formed. The thin film transistor includes a gate electrode connected to a gate line, a semiconductor layer formed by stacking amorphous silicon or the like on the gate electrode, a source electrode formed on the semiconductor layer and electrically connected to the data line and the pixel electrode, And serves as a switching element.

The color filter substrate 112 includes a color filter composed of a plurality of sub-color filters that implement colors of red, green, and blue, a color filter that separates each sub color filter and transmits light passing through the liquid crystal layer And a black matrix (BM) for intercepting the black matrix.

The array and color filter substrates 111 and 112 are arranged to face each other by a sealant formed at the outer periphery of the image display area and are spaced apart from each other by a predetermined distance to constitute the liquid crystal panel 100. Although not shown, a polarizing plate (not shown) is attached to outer surfaces of the bonded array and color filter substrates 111 and 112 to linearly polarize incident and output light.

The backlight unit 120 includes an LED lamp 121 as a light source and a light guide plate 123, an optical sheet 124, and a reflection plate 127 for increasing the efficiency of light emitted from the light source.

The LED lamps 121 are disposed below the liquid crystal panel 100 so that a plurality of LED lamps 121 are arranged in a line on the lamp substrate 122 so as to correspond to one side thereof so that the light- . In the embodiment of the present invention, the LED lamp 121 having the light emitting surface facing the side is used, and the lamp substrate 122 is mounted on the supporter main body 130 with the surface, on which the LED lamp 121 is disposed, Respectively.

Here, the LED lamp 121 as a light source may be an R, G, or B LED device that emits single color light of each of R (Red), G (Green), and B .

When the LED lamp emitting the monochromatic light is disposed, monochromatic light LED lamps of R, G, and B are alternately arranged with a predetermined interval, monochromatic light emitted from the monochromatic light LEDs are mixed into white light, When the LED lamps emitting white light are arranged, a plurality of LED lamps are arranged at predetermined intervals to provide white light to the liquid crystal panel 100.

In addition, the lamp substrate 122 on which the plurality of LED lamps 120 are mounted is electrically connected to a lamp control unit and a power supply unit (not shown) through a connection portion 122a extending from one side.

The light emitting surface of the LED lamp 120 is opposed to at least one side surface of the light guide plate 123 to be mounted therein. Accordingly, the light emitted from the LED lamp 120 is incident on the side surface of the light guide plate 123.

The light guide plate 123 is disposed to correspond to the lower surface of the liquid crystal panel 100 and serves to guide the liquid crystal panel 100 in such a manner that loss of light emitted from the LED lamp 120 is minimized. The light incident on the light guide plate 123 is refracted and reflected repeatedly by the diffuser added to the inner side, proceeds to the other side, and then is emitted toward the upper side of the light guide plate 123.

The optical sheet 124 includes a diffusion sheet 124a for diffusing the light emitted from the light guide plate 123 and light diffused by the diffusion sheet 124a to generate uniform light And a plurality of prism sheets 124b and 124c.

Here, the diffusion sheet 124a is normally provided, but the prism sheets 124b and 124c include a first prism sheet 124b and a second prism sheet 124b, which are vertically crossed in the x- and y- And 124c to refract light in the x and y axis directions to improve the straightness of light.

A reflective plate 127 is attached to the back surface of the light guide plate 123 so as to reflect the light emitted to the lower side and then proceed to the direction of the liquid crystal panel 100 in the direction of the light guide plate 123, To enhance light efficiency and to support the back surface of the LCD module.

The supporter main 130 may be formed of a synthetic resin, which is formed by injection molding, in the form of a rectangular frame for determining the outer shape of the LCD module.

The supporter main body 130 is formed with a stepped portion in the inner direction, and a concave-convex portion 132 for supporting the LED substrate 122 and for inserting the LED lamp 121 is formed on one side. The liquid crystal panel 100 is mounted on the stepped portion and the light guide plate 123 and the plurality of optical sheets 124 are laminated in the inner space. And a reflection plate 127 is attached to the lower portion to form a back surface of the LCD module.

In particular, at least one vision hole 135 is formed on one side of the supporter main body 130 of the present invention. The vision hole 135 is formed in a shape such that a stepped portion is depressed at the uppermost end of the supporter main body 130 where the lamp substrate 122 is engaged and has a circular shape with a predetermined width when viewed from above. Here, the vision hole 135 may be formed in various shapes such as an ellipse, a triangle, a square and a polygon, a star and a cross, in addition to the circular shape as illustrated, and may be formed on one side as well as on the other side.

The vision hole 135 has a corresponding shape on the mold frame of the supporter main body 130 and is manufactured by injection molding together with the supporter main body 130. The vision alignment hole 135 is formed by a vision camera provided in the automatic assembling apparatus at the time of assembling the liquid crystal display module, and is aligned between the supporter main body 130 and the other liquid crystal display module This is done automatically.

A light shielding tape is interposed between the supporter main body 130 and the liquid crystal panel 100 so that the supporter main body 130 is attached on the liquid crystal panel 100 and the liquid crystal panel 100 is fixed by external force without shaking . In addition, the light shielding tape 140 also shields the light emitted from the backlight unit 120 from leaking to the outside.

At this time, the light-shielding tape 140 is attached to the backlight unit 120 as well as to the side edges of the supporter main body 130, so that when the LCD main body 130 is assembled, The hole 135 is obscured and can not be identified by the vision camera. In order to solve such a problem, a portion corresponding to one side of the light shielding tape 140, corresponding to the vision hole 135, is attached to the supporter main body 130 before and after the attachment of the light shielding tape 140, A cutting groove 145 is formed so that the phosphorus hole 135 can be photographed.

In the process of placing the liquid crystal panel 100 on the upper part of the supporter main body 130 with the light shielding tape 140 attached thereto, even when the light shielding tape 140 covers the supporter main body 130, It is possible that the vision hole 135 is exposed to the outside by the projection lens 145 and the vision hole 135 is identified through the vision camera to perform alignment for assembly, Can be applied.

Hereinafter, an example of an automatic assembling process applied to a liquid crystal display module according to an embodiment of the present invention will be described with reference to the drawings.

3 is a view for explaining an automatic assembling process applied to the liquid crystal display module of the present invention.

As shown in the figure, the assembling process of the liquid crystal display module of the present invention is characterized in that the aligning process is automated by using a vision camera for a liquid crystal display module including a supporter main formed with a vision hole.

The assembling equipment to be used in this case includes at least an assembling jig 205 on which the liquid crystal panel 100 and the supporter main 130 are mounted, a stage 210 on which the assembling jig 205 is prepared, A main controller 240 for controlling the conveying unit 220 and performing an assembling process through a photographing result of the vision camera 230, a transferring unit 220 for attaching the transferring unit 220, a vision camera 230 for photographing the supporter main 130, .

According to the above-described structure, in the assembling process of the liquid crystal display module of the present invention, the assembly jig 205 is first prepared on the stage 210, and the backlight unit 210 is inserted into the supporter main body 130 through the transfer unit 220. [ (Not shown). Here, the supporter main 130 can be seated in the assembling jig 205 in a state where the backlight unit is mounted in the previous step

Next, the light shielding tape 140 is conveyed through the conveying unit 220 and attached on the main supporter 130. At this time, the vision camera 230 photographs the cutting groove of the light shielding tape 140 and the vision hole 135 of the supporter main body 130, and the main control unit 240 displays the photographing result by the vision camera 230 The light shielding tape 140 is attached to the supporter main 130 by controlling the conveying unit 220 to overlap the vision hole 135 and the cut groove.

Subsequently, the liquid crystal panel 100 is positioned above the supporter main body 130, on which the light shielding tape 140 is attached, through the conveyance unit 220, and the non-display area of the liquid crystal panel 100 is passed through the vision camera 230 (Not shown) formed in the vision hole 135 and the liquid crystal panel 100 are photographed. Herein, the alignment mark may be used to reuse the alignment mark formed for the process of attaching the two substrates during the manufacture of the liquid crystal panel 100, or a separate alignment mark may be used for the present assembling process. The main control unit 240 adjusts the position of the liquid crystal panel 100 on the supporter main body 130 through the distance relationship between the aligned alignment mark and the vision alignment hole 135 and then attaches the liquid crystal panel 100 .

Therefore, the liquid crystal display module of the present invention can be applied to the automatic assembly process of the module through the above-described assembly process equipment. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

FIG. 4 is a partial cross-sectional view of a liquid crystal display module according to an embodiment of the present invention, and FIG. 5 is a view showing the state before and after coupling the supporter main body and the light shielding tape according to the present invention. In the following description, a description overlapping with the above embodiment is briefly shown.

As shown in the figure, the liquid crystal display module of the present invention comprises a liquid crystal panel 100 for displaying an image, a backlight unit 200 for providing light, and a supporter main unit 130 for modulating the light.

The liquid crystal panel 100 includes a liquid crystal layer interposed between the array substrate 101 and the color filter substrate 102 with a predetermined distance therebetween. The liquid crystal panel 100 includes a display area A / A in which an image is displayed and a non-display area N / A surrounding the display area A / A).

The drive IC 105 is mounted on the array substrate 101. If not shown, the array substrate 101 can be connected to a flexible substrate (not shown) electrically connected to an external system from one side.

The backlight unit 120 includes an LED lamp 121, a light guide plate 123, an optical sheet 1224, and a reflector 127. A plurality of LED lamps 121 are bonded on the lamp substrate 122 in a line and disposed on one side of the lower side of the liquid crystal panel 100 to emit light. The lamp substrate 122 is disposed such that a large surface thereof is in close contact with the lower surface of the liquid crystal panel 100. Here, the lamp substrate 122 is disposed over the stepped portion of the supporter main body 130 and the side edge of the light guide plate, and is coupled with one side bent according to the shape of the light guide plate 123.

The light guide plate 123 is disposed to correspond to the lower portion of the liquid crystal panel 100 and guides the light emitted from the LED lamp 121 toward the liquid crystal panel 100. The optical sheet 124 diffuses the light emitted from the light guide plate 123 and condenses the diffused light so that uniform light is supplied to the entire area of the liquid crystal panel 100. Such an optical sheet 124 may be composed of a diffusion sheet 124a and a plurality of prism sheets 124b and 124c. The reflection plate 127 is attached to the back surface of the light guide plate 123 so as to reflect the light emitted to the lower portion and to move toward the light guide plate 123 again.

The liquid crystal panel 100 and the backlight unit 120 described above are mounted on the supporter main body 130. The liquid crystal panel 100 is mounted on the front surface of the supporter main body 130 and the light guide plate 123 and the plurality of And the optical sheets 124 are stacked. And a reflection plate 127 is attached to the lower portion. A separate adhesive member 128 may be further used to stably attach the reflector 127 to the supporter main 130.

A first step 131 is formed on the inner side of the supporter main body 130 to receive the lamp substrate 131. The first step 131 has a concavo-convex shape when viewed from above, And the LED lamp 121 is inserted into the recessed portion.

The uppermost end of the supporter main body 130 is formed with a second stepped portion having a height higher than that of the first stepped portion 131 and one or more vision aligned holes 135 are formed at a portion of the second stepped portion . An opening 137 is formed in the second step portion so that the extension portion 122a of the lamp substrate 122 is exposed to the outside after the light shielding tape 140 is attached thereto.

A light shielding tape 140 is attached to the upper portions of the supporter main body 130 and the backlight unit 120. The light shielding tape 140 is attached from the supporter main body 130 to the end of the optical sheet 124 via the lamp substrate 122 so that the light shielding tape 140 contacts the liquid crystal panel 100 with the supporter main body 130 And the optical sheet 124 is also fixed. In addition, a cutting groove 145 corresponding to the vision hole 135 described above is formed at the end of the light shielding tape 140.

The liquid crystal panel 100 is disposed above the light-shielding tape 140. A second stepped portion is formed at the uppermost end of the supporter main body 130 and a step difference compensating portion 160 is provided between the light shielding tape 140 and the liquid crystal panel 100 to stably attach the liquid crystal panel 140 .

According to the above-described structure, the liquid crystal display module of the present invention can be manufactured by using a vision camera through a vision hole 135 formed in a supporter main 130 and a cut groove 145 formed in a light-shielding tape 140 Aligned conditions are identifiable, and automated assembly processes become applicable.

In addition, the lamp substrate 122 of the backlight unit is seated on the first step of the supporter main 130, and the lamp substrate 122 is misaligned due to an error in the assembling process and is not correctly seated in the first step portion, It is possible that the lamp substrate 122 may cover the vision hole 135 when the second step portion of the lamp substrate 122 touches the second step portion, As the lamp substrate 122 is identified, there is an advantage that it is possible to accurately confirm whether the backlight unit as well as the liquid crystal panel 100 is correctly mounted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

100: liquid crystal panel 120: backlight unit
130: Supporter Main 135: Vision Alignment Hall
140: shading tape 145: cutting groove

Claims (10)

A liquid crystal panel;
A backlight unit provided on a rear surface of the liquid crystal panel to provide light; And
Wherein the liquid crystal panel and the backlight unit are mounted, and at least one side of the supporter main body having at least one vision-
And a liquid crystal display module. The method according to claim 1,
The vision alignment hole may be formed by,
Wherein the shape is one of a circle, an ellipse, a triangle, a rectangle, a polygon, a star, and a cross shape. The method according to claim 1,
The vision alignment hole may be formed by,
Wherein the liquid crystal display module is formed on the supporter main body by an injection molding method. The method according to claim 1,
Wherein the supporter main comprises:
A first step portion on which the backlight unit is seated; And
And a second step portion on which a side end of the liquid crystal panel is seated,
And the second unvised line hole is formed such that a part of the second step portion is further projected or recessed. 5. The method of claim 4,
The backlight unit includes:
A plurality of LED lamps;
A lamp substrate on which the LED lamps are bonded in a line;
A light guide plate whose light incidence surface faces the LED lamp;
At least one optical sheet disposed on an upper surface of the light guide plate; And
And a reflection plate attached to a back surface of the light guide plate,
Wherein the lamp substrate is not exposed by the vision hole as it is seated on the first step. The method according to claim 1,
Between the liquid crystal panel and the supporter main,
A liquid crystal display module further comprising a light shielding tape for shielding light to the outside and attaching the liquid crystal panel to the supporter main body; The method according to claim 6,
The light-
And a cut groove corresponding to the vision hole is formed. 8. The method of claim 7,
The light-
Wherein the liquid crystal display panel comprises a non-display area of the liquid crystal panel as an upper surface, and a side surface of the backlight unit and a supporter main body as a lower surface. 8. The method of claim 7,
And a step difference compensating unit is further provided between the liquid crystal panel and the light shielding tape. The method according to claim 1,
In the liquid crystal panel,
And the alignment mark corresponding to the vision alignment hole is further formed.

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