KR101088320B1 - Liquid crystal display module - Google Patents

Abstract

The present invention relates to a liquid crystal display module, and more particularly, to a liquid crystal display module having a structure for fixing a power supply wiring of a backlight drawn out of the liquid crystal display module.

The present invention provides a first structure for applying a hook structure to a lead portion of a support main corresponding to a portion of a backlight power supply line, and a hook structure for applying a hook structure to a rear surface of a cover bottom in which the power line wiring of the backlight is finally seated. We propose 2 structure.

The above-described first and second structures can cleanly arrange the power supply wiring of the backlight without the need for additional materials such as a separate tape, and can be in close contact with the liquid crystal display module, thereby reducing material costs and improving workability. have.

Description

Liquid crystal display module             

1 is an exploded perspective view of a typical liquid crystal display module.

2 is a view illustrating a side of a liquid crystal display module showing a backlight power line;

3A is an enlarged cross-sectional view of A of FIG. 2, and FIG. 3B is an enlarged perspective view of A of FIG. 2,

4 is a view showing a liquid crystal display module according to a first embodiment of the present invention;

FIG. 5 is a side view of a liquid crystal display module according to a first exemplary embodiment of the present invention where a backlight power line is visible.

6A is an enlarged cross-sectional view of FIG. 5B, FIG. 6B is an enlarged perspective view of B of FIG. 5,

FIG. 7 is a view illustrating a rear surface of the liquid crystal display module according to the first exemplary embodiment of the present invention, in which the lead portion is seen.

FIG. 8A is a side view of a liquid crystal display module according to a second exemplary embodiment of the present invention showing a backlight power line;                 

8B is a plan view illustrating a rear surface of a liquid crystal display module according to a second embodiment of the present invention.

9 is a diagram illustrating a cover bottom rear surface of the liquid crystal display module according to the present invention.

<Description of the symbols for the main parts of the drawings>

110: liquid crystal panel 111,112: first and second substrate

114: flexible circuit board 116,118: driving circuit board

130: backlight assembly 132: reflector

134: fluorescent lamp 135: power supply wiring

140: support main 150: cover bottom

160: top cover

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display module, and more particularly, to a power supply line (hereinafter, referred to as a “power supply wiring”) of a fluorescent lamp provided in the backlight device while integrating the upper and lower liquid crystal panels and the backlight device together. The present invention relates to a liquid crystal display module including a support main, a cover bottom and the like for drawing out in the rear direction.

Currently commercially available thin display devices include liquid crystal displays (LCDs) for displaying images using birefringence characteristics of liquid crystals, and plasma flat panel displays (PDPs) for displaying images through light emitted from plasma. plasma display panel) and organic electroluminescence (OLED), which display images through the emission of organic materials.

Among the above-described thin display devices, the PDP or the OLED displays an image by using spontaneously emitting characteristics, but the LCD requires a separate light source, that is, a backlight unit.

The separate light source is configured on the rear side of the liquid crystal panel, and continuously irradiates light toward the liquid crystal panel, and the irradiated light is adjusted according to the arrangement direction of the liquid crystal operating according to the switching operation inside the liquid crystal panel. Is shown in the form of an image.

Hereinafter, a configuration of a liquid crystal display module including a backlight unit will be described with reference to FIG. 1.

FIG. 1 is an exploded perspective view of a general liquid crystal display device module. In the state in which the liquid crystal panel 10 and the backlight assembly 30 are stacked up and down, edges thereof are supported by a main frame formed of a rectangular molded product. The cover bottom (50) is coupled to the support main 40 to cover the back of the backlight assembly 30 to prevent the shape deformation and to protect the fluorescent lamp 34 to be described later. In order to fix both of them, the top cover (top cover: 60) bordering the front edge of the liquid crystal panel 10 is assembled to the support main 40.

At this time, the liquid crystal panel driver circuits 16 and 18 are connected to at least one side of the liquid crystal panel 10 via a flexible printed circuit board 14 to be in close contact with the back cover 50 during the modularization process. This serves to control the image implementation operation of the liquid crystal panel 10 through various external signal voltages.

The backlight assembly 30 may include a reflector 32 interposed on an inner surface of the cover bottom 50 facing the liquid crystal panel 10, and a fluorescent lamp arranged along at least one inner edge of the support main 40 at an upper portion thereof. A light guide panel 36 seated on the reflecting plate 32 so as to occupy the same plane as the fluorescent lamp 34 and refracting light incident from the side toward the liquid crystal panel 10; It includes a plurality of optical sheets 38 covering them.

As a result, the light emitted from the fluorescent lamp 34 is processed to a high quality of uniform brightness while passing through the optical sheet 38 while facing the liquid crystal panel 10 by the reflecting plate 32 and the light guide plate 36 so that the liquid crystal panel 10 Incident), the liquid crystal panel 10 may display a high-brightness image externally.

On the other hand, the accompanying drawings may be a 5 to 8 inch class liquid crystal display device used as a display screen, such as a PDA (Personal Digital Assistant), electronic notebook or car navigation system, for example, as shown in this case fluorescent lamp ( 34 is bent in a U or L shape and arranged along at least two adjacent inner edges of the support main 40, and at least of the reflector 32 corresponding to the fluorescent lamp 34 to minimize light loss. The two edge ends are generally bent to surround the outer and front surfaces of the fluorescent lamp 34 so that only the inner side toward the light guide plate 36 is opened.

In addition, although not clearly shown in the drawings, various signals are applied to the backlight driver circuits to the liquid crystal panel driver circuits 16 and 18 to control on / off of the fluorescent lamp 34 in a general liquid crystal display module. Separate external control circuits for transmitting voltage are mounted, and they are usually in close contact with the cover bottom 50 to minimize the overall size.

Accordingly, the pair of power wirings 35 extending from both ends of the fluorescent lamp 34 need to be drawn out in the rear direction of the liquid crystal display module. Therefore, for this purpose, the pair of power wirings 35 is drawn out of the support main. The cover OP is drawn out to the rear surface of the cover bottom 50 through the OP.

2 is a cross-sectional view of a conventional liquid crystal display module, in which a power wire is drawn and fixed.

The liquid crystal display module (LCM) according to the related art includes a part of the top cover 60 which is bent so that the side surface from which the power wiring 35 of the backlight (not shown) is drawn out, and the cover cover is not shown. C) is formed by bending a side surface and a rear surface thereof, and the support main 40 seated inwardly of the top cover 60 corresponds to a portion where the top cover and cover cover 60 (not shown) are bent. The extension unit is configured to extend the lead wire 35 is led out to the back of the cover bottom 60 is configured (OP).

Through such a configuration, the power supply wiring 35 of the backlight is guided to the outside through the drawing part OP of the support main 40 so that the back of the cover bottom (not shown), such as tape 70 It is fixed and seated through a separate fixing means.

Hereinafter, the lead portion of the support main according to the related art will be described in detail with reference to FIGS. 3A and 3B.

3A is an enlarged cross-sectional view of A of FIG. 2, and FIG. 3B is an enlarged perspective view of A of FIG. 2.

As shown in FIGS. 3A and 3B, the drawing unit OP according to the related art configured in the support main 40 has first and second rectangular forms extending in the lateral direction from the inside of the liquid crystal display module LCM. The extension parts 40a and 40b are configured to be upper and lower sides. The first and second extension parts 40a and 40b are disposed in the direction viewed from the side of the liquid crystal display module LCM and the rear surface thereof. The reversible needle is a shape that is spaced apart in the shape of (┚).

In this case, a concave portion is formed in the horizontal cross section facing the first extension portion 40a, and a convex portion corresponding to the center of the concave portion D1 is disposed in the horizontal cross section facing the second extension portion 40b. D2) is configured.

Therefore, the power supply wiring (35 in FIG. 2) of the backlight is inserted between the recesses D1 and the convex portions D2 of the first and second extension portions 40a and 40b of the lead portion OP. It is fixed and is inserted between the opposite vertical ends (V1, V2) of the first and second extension portions (40a, 40b) is drawn out to the back of the cover bottom 50.

However, in the above-described configuration, although the power supply wiring (35 in FIG. 2) is primarily fixed by the shape of the recess D1 and the convex portion D2 inside the lead portion OP, the cover bottom 50 is fixed. Since the power line wiring (35 in FIG. 2) is not fixed at the portion corresponding to the back bending portion of the opening, that is, the opening F by the vertical ends facing the first and second extension portions 40a and 40b. The wire (35 in FIG. 2) is not in close contact and floats.

To prevent this, conventionally requires a separate fixing means such as tape (70 in Figure 2).

Therefore, additional costs must be paid for the arrangement and fixing of the power supply wiring, and since the attachment process of the fixing means is added, there is a problem in that work efficiency is lowered.

Accordingly, the present invention has been proposed to solve the above problems, the present invention comprises a hook structure on the back portion of the support main and the cover bottom, the power supply wiring without using a separate power supply fixing means It can be fixed stably, thereby aiming to reduce costs and increase work efficiency.

In order to achieve the above object, a liquid crystal display module according to the present invention includes a liquid crystal panel; A backlight assembly including a fluorescent lamp and positioned on a rear surface of the liquid crystal panel; A first extension extending at right angles to the edges of the liquid crystal panel and the backlight assembly, a second extension covering the first extension at a right angle, and a vertical end facing the first extension and the second extension; A support frame having a rectangular frame shape including a protrusion configured to; A cover bottom covering a rear surface of the backlight device and having a portion corresponding to an end of a vertical end of the first and second extensions formed in the support main;

A top cover bordering a front edge of the liquid crystal panel; And a power wiring connected to the backlight device and drawn out by the first extension part and the second extension part and positioned on a rear surface of the cover bottom.

The horizontal ends facing the first and second extensions are concave or convex, but in opposite shapes.

The rear surface of the cover bottom in which the power wiring is located is bent upward in the opposite direction to further comprise a first locking end and a second locking end to which the power wiring can be placed.

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

4 is a perspective view illustrating a liquid crystal display module according to the present invention.

As shown in the drawing, the upper and lower overlapped liquid crystal panel 110 and the backlight assembly 130 are surrounded by a rectangular frame-shaped support main 140, and cover cover 150 covering the rear surface of the backlight assembly 130. ) And the top cover 160 bordering the front edge of the liquid crystal panel 110 are assembled to the support main 140, respectively.

More specifically, first, the liquid crystal panel 110 includes a pair of first and second substrates 111 and 112 bonded together with a liquid crystal layer interposed therebetween as a part that plays a key role in image expression.

In this case, although not clearly shown in the drawings, a plurality of gate lines and data lines intersect on the inner surface of the first substrate 111 called a lower substrate or an array substrate to define pixels, and at each intersection point. A thin film transistor (TFT) is provided and is connected one-to-one with a pixel electrode mounted in each pixel. In addition, an inner surface of the second substrate 112 called an upper substrate or a color filter substrate may correspond to each pixel, for example, a color filter of R, G, and B colors, and borders each of the gate and data lines; A black matrix covering a portion where the liquid crystal is not driven, such as a thin film transistor, and a common electrode covering them are provided.

In addition, the liquid crystal panel driver circuits 116 and 118 are connected to at least one edge of the liquid crystal panel 110 through a flexible circuit board 114, which is connected to a plurality of gate lines to turn on / off signals of the thin film transistor. The gate driver circuit 116 scans and transfers the data driver circuit 118 that transmits image signals for each frame to a plurality of data lines, respectively, and is positioned at two adjacent edges of the liquid crystal panel 110.

Therefore, when the thin film transistor selected for each gate line is turned on by the on / off signal of the gate driver circuit 116 which is scanned and transferred to the plurality of gate lines, the signal voltage of the data driver circuit 118 is transferred to the corresponding pixel electrode through the data line. The liquid crystal molecules are arrayed by the up and down electric fields between the pixel electrode and the common electrode, thereby indicating a difference in light transmittance.

The liquid crystal panel 110 is provided with a backlight assembly 130 to supply light to the rear surface of the liquid crystal panel 110, and the plurality of optical sheets 138 closely contact each other along the rear surface of the liquid crystal panel 110. A light guide plate 136 and a fluorescent lamp 134 arranged along at least one edge side thereof.

Accordingly, the light emitted from the fluorescent lamp 134 is incident on the side of the light guide plate 136 and refracted toward the liquid crystal panel 110, and is processed to a high quality of uniform luminance while passing through the plurality of optical sheets 138. As incident on the liquid crystal panel 110, the liquid crystal panel 110 may display a high brightness image to the outside.

The fluorescent lamp 134 may be bent in an L or U shape to be arranged along at least two edge sides of the light guide plate 136 as shown, and the fluorescent lamp 134 and the light guide plate to prevent light loss. (136) A silver or white reflector 132 may be further interposed on the rear surface. Preferably, the end of the reflector 132 corresponding to the fluorescent lamp 134 is firstly bent upwards and then secondly inwards. It may be bent to wrap around the outer and front sides of the fluorescent lamp 134, and as a result, the light of the fluorescent lamp 134 may be more effectively concentrated on the light guide plate 136 and the liquid crystal panel 110.

In addition, although not shown in the drawings, at least an inner surface facing the fluorescent lamp 134 is silver or white, and separate lamps to cover three directions of the upper and lower sides of the fluorescent lamp 134 except for the inner side toward the light guide plate 136. The housing may be provided along the longitudinal direction of the fluorescent lamp 134, in which case the reflecting plate 132 may have a simple flat sheet form.

In addition, the liquid crystal panel 110 and the backlight assembly 130 are surrounded by a square frame-shaped support main 140 made of a synthetic resin mold in a state of being folded up and down, and a cover bottom (back) is formed on the rear surface of the reflective plate 132. 150 is in close contact with the support main 140 and the top cover 160 bordering the liquid crystal panel 110 with the front edge and the outside of the support main 140 is coupled to the support main 140 to display the liquid crystal display. Complete the device module.

Although not shown in the drawings, the LCD module according to the present invention has various signal voltages in the backlight driver circuit to the liquid crystal panel driver circuits 116 and 118 which control the flashing of the on / off of the fluorescent lamp 134. Separate external control circuits are mounted to transmit the signal, and they are preferably closely contacted to the cover bottom 50 to minimize the overall size.

As a result, the power supply line 135 of the fluorescent lamp 134 needs to be drawn out in the rear direction of the liquid crystal display module LCM. The liquid crystal display module LCM according to the present invention is the backlight (not shown). Openings 162 and 152 are formed to correspond to the top cover and the cover bottoms 160 and 150, respectively, and the support main 140 corresponding to the openings 162 and 152 is a power supply of a backlight (not shown). And a withdrawal part OP for withdrawing outside.

At this time, a feature of the first embodiment of the present invention is to apply a hook structure that can be fixed by hanging the power wiring to the lead portion (OP) of the support main.

5 illustrates a side structure of a liquid crystal display module according to the present invention.

As shown, the support main 140 including the backlight device 130, the liquid crystal panel (110 in FIG. 4) and the lead-out portion OP and the cover bottom (not shown) are seated inside the top cover (not shown). After the assembly, the power supply 135 of the backlight is configured on the rear surface of the cover bottom (not shown) through the lead portion OP of the support main 140.                     

In this case, the power wiring 135 drawn from the backlight device 130 immediately extends from the side of the liquid crystal display module LCM in the longitudinal direction to form the lead portion OP of the support main 140. The concave convex portions of the portion and the second extension portions 140a and 140b are sandwiched between the first and second extensions 140a and 140b and fixed to the rear surface of the cover bottom (not shown).

In this case, when viewed from the rear of the cover bottom (not shown), the protrusions (R1, R2) is formed at each end of the vertical ends of the first and second extension portions (140a, 140b), such projections Power supply wiring can be stably fixed by (R1, R2).

Hereinafter, with reference to the drawings, the configuration of the above-mentioned withdrawal unit will be described in detail.

6A is an enlarged cross-sectional view of FIG. 5B, and FIG. 6B is an enlarged perspective view of B of FIG. 5.

As shown in FIGS. 6A and 6B, when the lead portion OP of the support main 140 according to the present invention is viewed in a direction where the side and the rear surface of the cover bottom 150 meet, the support main 140 The first and second extension portions 140a and 140b extending from each other and formed at right angles are formed, and when viewed in a direction in which the side and the rear surface of the cover bottom 150 meet, the first extension portion 140a is viewed. The second extension part 140b is formed in a shape that is spaced apart and wrapped in an inverse needle shape.

At this time, the concave portion G1 is formed at the horizontal end portion facing the first extension portion 140a, and the convex portion G2 is formed at the horizontal end portion corresponding to the second extension portion 140b. .

In this case, a portion corresponding to the concave portion G1 and the convex portion G2 is referred to as a first fixing portion H1.

Each end of each of the vertical ends of the first and second extension parts 140a and 140b that constitutes the protrusions R1 and R2 in a direction facing each other. At this time, a portion where the protrusions R1 and R2 are formed is referred to as a second fixing part H2.

Accordingly, the power line (135 in FIG. 5) is first fixed by the first fixing part H1 and secondly by the second fixing part H2 before being drawn out to the rear surface of the cover bottom 150. It is fixed.

Hereinafter, a shape when the second fixing part H2 is viewed from the rear surface of the cover bottom 150 will be described with reference to FIG. 7.

As shown in FIG. 7, the ends of the vertical ends of the first extension part 140a and the second extension part 140b of the fixing part are positioned through the rear opening GH of the cover bottom 150. At each end of the vertical end, protrusions R1 and R2 are formed.

Accordingly, in the process of drawing the power supply wiring 135 of FIG. 5 to the rear surface, the power supply wiring 135 of FIG. 5 may protrude from the first extension portion 140a and the second extension portion 140b. It is caught by R2).

Accordingly, the power wiring (135 in FIG. 5) can be stably arranged by the lead portion of the support main according to the present invention.

In the above-described configuration, if the hook type structure is further formed on the rear surface of the cover bottom, the power wiring can be arranged more easily. This will be described with reference to FIG. 8.                     

8A and 8B are diagrams schematically illustrating a configuration of side and rear surfaces of a liquid crystal display module according to a second embodiment of the present invention.

As shown in FIGS. 8A and 8B, the liquid crystal display (LCM) according to the second embodiment of the present invention has power supply wiring at the side of the top cover 160, the support main 140, and the cover bottom 150. At the same time as the side fixing the 135, a lead portion (OP) for inducing the drawing to the back of the cover bottom 150 is configured, the back of the cover bottom 150 corresponding to the portion where the power wiring 135 is located First and second locking ends 210a and 210b are configured to prevent the power line 135 from being lifted up.

A locking end configured in the cover bottom 150 will be described in detail below with reference to FIG. 9.

9 is an enlarged view of a rear surface of a cover bottom configured as a hooking end according to the second embodiment of the present invention.

As illustrated, protrusions R2 and R1 of the first and second extension portions 140a and 140b of the lead portion OP are positioned in the rear opening GH of the cover bottom 150, and the lead portion OP is disposed. The first and second locking ends 210a and 210b are sequentially formed on the cover bottom 150 corresponding to the line extending along the line.

At this time, the first and second locking end (210a, 210b) is configured in an upward bent shape with one side open so that the power wiring is fitted horizontally.

Therefore, when the power supply wiring (135 in FIG. 7) is hooked on the first and second locking ends 210a and 210b, the power supply wiring (135 in FIG. 7) is fixed to prevent movement in the left and right directions.

In this case, the first and second locking ends 210a and 210b may be formed in a cover bent 150 itself and be bent upwardly or may be separately attached.

With the above configuration, it is possible to form a liquid crystal display module including a hook structure capable of closely fixing the power supply wiring of the backlight to the liquid crystal display module.

As described above, the present invention is the first structure to apply the hook structure to the lead portion of the support main corresponding to the portion of the power supply wiring of the backlight, and the hook on the back of the cover bottom to which the power supply wiring of the backlight is finally seated A second structure applying the structure is proposed, and the first and second structures can cleanly arrange the power supply wiring of the backlight without the need for additional materials such as a separate tape, and at the same time, they can be closely attached to the liquid crystal display module. Therefore, it is possible to reduce material costs and improve workability.

Claims (10)

A liquid crystal panel; A backlight assembly including a fluorescent lamp and positioned on a rear surface of the liquid crystal panel; A first extension extending at right angles to the edges of the liquid crystal panel and the backlight assembly, a second extension enclosing the first extension at right angles, and a vertical end facing the first extension and the second extension; A support frame having a rectangular frame shape including a protrusion configured to; A cover bottom covering a rear surface of the backlight assembly and having a portion corresponding to an end of a vertical end of the first and second extensions formed in the support main; A top cover bordering a front edge of the liquid crystal panel; A power wiring connected to the backlight assembly and drawn out by the first and second extensions and positioned on a rear surface of the cover bottom Liquid crystal display module comprising a. The method of claim 1, And a horizontal end portion facing each other of the first extension portion and the second extension portion is formed in a concave or convex shape, the opposite ends of which are arranged in opposite shapes. The method of claim 1, And a first locking end and a second locking end which are bent upward in the opposite direction to a rear surface of the cover bottom where the power wiring is located to hang the power wiring. The method of claim 3, wherein And the first and second locking ends are sequentially spaced apart from each other on an extended line of the first extension part and the second extension part. Claim 5 was abandoned upon payment of a set-up fee. The method of claim 1, The fluorescent lamp module is arranged along the inner surface of at least one side of the support main. Claim 6 was abandoned when the registration fee was paid. The method of claim 1, The backlight assembly may include a reflection sheet interposed along an inner surface of the cover bottom to a rear surface of the fluorescent lamp; A light guide plate mounted on the reflective sheet so as to occupy the same plane as the fluorescent lamp; And a plurality of optical sheets covering the light guide plate and the fluorescent lamp. Claim 7 was abandoned upon payment of a set-up fee. The method of claim 6, Wherein the fluorescent lamp is bent in an L or U shape to be arranged along at least two side edges of the light guide plate. A liquid crystal panel; A backlight assembly including a fluorescent lamp and positioned on a rear surface of the liquid crystal panel; A power wiring connected to the backlight assembly; A support frame having a rectangular frame shape bordering an edge of the liquid crystal panel and the backlight assembly and including a first extension part extending in a rectangular shape and a second extension part wrapping the first extension part in a rectangular shape; A first locking end covering a rear surface of the backlight assembly and corresponding to an end of a vertical end of the first and second extension parts configured in the support main, and being bent upward in the opposite direction to the back surface to hang the power wiring; A cover bottom configured with a second locking end; Top cover bordering the front edge of the liquid crystal panel Liquid crystal display module comprising a. The method of claim 8, And a projection portion further configured at each end of each of the vertical ends of the first and second extension portions of the support main. The method of claim 8, And the power supply wire is drawn out by the first extension part and the second extension part of the support main, and is fixed to the first and second locking ends of the cover bottom surface.

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