KR20090050799A - Liquid crystal display module - Google Patents

Abstract

The present invention relates to a liquid crystal display module having an improved structure of a cover bottom and a support main, comprising: a cover bottom having an opening; A support main having a protrusion and assembled with the cover bottom by inserting the protrusion into the opening through a lamp housing and a reflective sheet; And a top cover provided with a light source in the lamp housing and assembled with the support main and the cover bottom through a plurality of optical sheets and a liquid crystal panel.

LCD module, support main, cover bottom, opening, protrusion

Description

Liquid Crystal Display Module

The present invention relates to a liquid crystal display module, and more particularly, to a liquid crystal display module having an improved structure of a cover bottom and a support main.

CRT (Cathode Ray Tube), one of the commonly used display devices, is mainly used for monitors such as TVs, measuring devices, and information terminal devices.However, due to the weight and size of the CRT itself, the size and size of electronic products are reduced. Could not respond actively. In order to solve the CRT problem, various flat panel display devices such as a liquid crystal display (LCD), a plasma display panel (PDP), an electro luminescent display (ELD), and a vacuum fluorescent display (VFD) have been proposed and utilized.

Among flat panel displays, liquid crystal displays are widely used because they have advantages of miniaturization, light weight, thinness, and low power driving. In particular, the liquid crystal display device using the thin film transistor can realize a high-definition, large-sized, color, and the like of the display screen, and is recently used in various fields as well as notebook PCs and monitors.

In general, liquid crystal displays apply voltages to specific molecular arrangements of liquid crystals,

It converts into a molecular arrangement and visually converts changes in optical properties such as birefringence, photoreactivity, dichroism, and light scattering characteristics of a liquid crystal cell that emits light by such molecular arrangement. It is a light receiving display device for displaying.

Such a liquid crystal display device includes a backlight assembly that provides light to represent an image because it is a light receiving device, and the backlight assembly is classified into a direct type and an edge type according to the arrangement of the light source. . The direct type backlight assembly is a method in which a plurality of light sources are disposed at regular intervals directly under the liquid crystal display panel to directly irradiate directly under the liquid crystal display panel, and the edge type backlight assembly is provided to a light guide plate that converts light emitted from the light source into surface light. This is a method of irradiating light to the liquid crystal display panel. The backlight assembly uses a Cold Cathode Fluorescent Lamp (CCFL) or an External Electrode Flourescent Lamp (EEFL) as a light source.

1 is an exploded perspective view of a liquid crystal display module according to the prior art, Figures 2a and 2b is a plan view and a side view of a lamp housing and a reflector in the liquid crystal display module according to the prior art, Figure 3 is a liquid crystal according to the prior art 4 is a rear view of the cover bottom in the display device module, and FIG. 4 is a rear view of the support main device in the liquid crystal display module according to the related art.

The liquid crystal display module 10 is a module of the liquid crystal panel 40 and the backlight assembly 20 integrally. The liquid crystal display module 10 includes a liquid crystal panel 40, a backlight assembly 20, a support main 70, and a top cover 60. The liquid crystal display module 10 surrounds the liquid crystal panel 40 and the periphery of the backlight assembly 20 with a support main 70, and the cover bottom 50 covers the rear surface of the backlight assembly 20. The support main 70 is coupled to the support main 70, and the support main 70 and the cover bottom 50 are assembled and fastened by the top cover 60 via the liquid crystal panel 40.

The first and second driving circuits 44 and 46 are connected to the liquid crystal panel 40 via a flexible printed circuit board 42. The first and second driving circuits 44 and 46 are connected to the liquid crystal panel 40. In the assembling process is appropriately in close contact with the outer side of the support main 70 or the back of the cover bottom 50. The backlight assembly 20 may include a cover bottom 50, a reflective sheet 22 integrally formed with the lamp housing 30 on the cover bottom 50, a fluorescent lamp 24 inside the lamp housing 30, and one side surface. The light guide plate 26 facing the light lamp 24 and a plurality of optical sheets 28 on the light guide plate 26 are included.

In the backlight assembly 20, the outgoing light of the fluorescent lamp 24 is incident by the lamp housing 30 to the side of the light guide plate 26 and refracted in the direction of the liquid crystal panel 40, while passing through the optical sheet 28. It is processed to a high quality of uniform brightness and is supplied to the liquid crystal panel 40. The support main 70 may open the peripheral portion 12 in which the lamp housing 30 including the fluorescent lamp 24 is interposed, and the plurality of optical sheets 28 may include a prism sheet and a diffusion sheet ( diffuse sheet) and the like.

The method of assembling the liquid crystal display module 10 includes inserting the lamp housing 30 and the reflective sheet 22 integrally formed on the cover bottom 50 shown in FIGS. 2A and 2B and covering the cover bottom 50. After the support main 70 is positioned on the first support hole 70, first fastening holes 52 formed at edges of both ends of the cover bottom 50 shown in FIGS. 1 and 3, and the first fastening hole 52 shown in FIG. 4. 1 Align the second fastening holes 54 corresponding to the fastening holes 52 and formed in the support main 70, and insert screws (not shown) into the first and second fastening holes 52 and 54. , The support main 70 and the cover bottom 50 are fastened. Then, the fluorescent lamp 24 is installed in the lamp housing 30, the light guide plate 26 and the plurality of optical sheets 28 are laminated on the support main 70, and finally through the liquid crystal panel 40. The top cover 60 and the support main 70 and the cover bottom 50 are assembled.

In the prior art, in order to insert the integrated lamp housing 24 and the reflective sheet 22 into the cover bottom 50, and to screw the cover bottom 50 and the support main 70, the cover bottom 50 of On the back side, a screw must be inserted into the first fastening hole 52. However, in order to insert the screw into the first fastening hole 52 normally, the cover housing 50 and the lamp housing 24 and the reflective sheet 22 inserted into the cover bottom 50 are turned upside down, and the cover bottom 50 is turned on. The first fastening hole 52 should be upward. However, during the flipping process and screwing, the lamp housing 24 and the reflective sheet 22 may sag due to their own loads, which may cause scratches on the reflective sheet 22, in particular, and the reflective sheet. There is a problem that the work efficiency is lowered due to the deflection phenomenon of (22).

In order to solve the problems of the prior art as described above, when the cover bottom and the support main are fastened, the integrated lamp housing and the reflective sheet are inserted by combining the openings and the protrusions formed in the cover bottom and the support main. It is an object of the present invention to provide a liquid crystal display module that can be assembled without inverting the cover cover, thereby preventing scratches of the reflective sheet and improving work efficiency.

According to an aspect of the present invention, there is provided a liquid crystal display module comprising: a cover bottom having an opening; A support main having a protrusion and assembled with the cover bottom by inserting the protrusion into the opening through a lamp housing and a reflective sheet; And a top cover provided with a light source in the lamp housing and assembled with the support main and the cover bottom through a plurality of optical sheets and a liquid crystal panel.

In the liquid crystal display module as described above, the support main includes: the protrusion formed on the outer surfaces of the two side portions facing each other; A first depression formed on outer surfaces of the two side portions; And a second recessed portion formed around the protrusion and the first recessed portion.

In the liquid crystal display module as described above, the first recessed portion is deeper than the second recessed portion.

In the liquid crystal display module as described above, the first recessed portion is formed in contact with the upper portion of the protrusion.

In the liquid crystal display module as described above, the cover bottom includes: a peripheral portion vertically bent upward at two side portions facing each other; An opening formed in the periphery and into which the protrusion is inserted; And a second protrusion formed on an inner surface of the peripheral portion and inserted into the first recessed portion.

In the liquid crystal display module as described above, the peripheral portion is inserted into the second recessed portion.

In the liquid crystal display module as described above, the peripheral portion is inserted into the second recessed portion to form the same surface as the two side portions of the support main.

In the liquid crystal display module as described above, the liquid crystal display module includes a first adhesive region formed on a rear surface of the support main adjacent to the protrusion, and a second adhesive region formed on an inner bottom surface of the cover bottom and coupled to the first adhesive region. Characterized in that.

In the liquid crystal display module as described above, the first adhesive region and the second adhesive region are joined by a double-sided tape.

In the liquid crystal display module as described above, the lamp housing and the reflecting sheet are integrally formed.

The liquid crystal display module according to the embodiment of the present invention has the following effects.

First, when the lamp housing and the reflective sheet integrally formed in the cover bottom and the cover bottom and the support main are combined, the cover main is inserted without the support main to be inserted into the cover bottom so that the cover main cannot be turned over. It is possible to prevent scratches due to the deflection of the reflective sheet, and the work efficiency can be increased without being disturbed by the deflection of the reflective sheet.

Second, by coupling the protrusion of the cover bottom to the depression of the support main, the tightening force of the cover bottom and the support main can be strengthened.

Third, by combining the cover bottom and the support main with double-sided tape, the tightening force between the cover bottom and the support main is further strengthened. Then, the cover bottom can be prevented from being spaced apart from the support main by the self-load of the cover bottom.

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

5 is an exploded perspective view of a liquid crystal display module according to the present invention, FIG. 6 is a rear view of the support main in the liquid crystal display module according to the present invention, and FIG. 7 is a detail of region A of FIGS. 5 and 6. 8A and 8B are detailed views of region B of FIG. 5, FIG. 9 is a coupling diagram of the support main and cover bottom in the liquid crystal display module according to the present invention, and FIG. 10 is a liquid crystal according to the present invention. The assembly flow chart of the display device module.

The liquid crystal display module 100 is a module of the liquid crystal panel 140 and the backlight assembly 120 integrally. The liquid crystal display device module 100 includes a liquid crystal panel 140, a backlight assembly 120, a support main 170, and a top cover 160.

The liquid crystal panel 140 is composed of an array substrate (not shown) and a color filter substrate (not shown) bonded through a liquid crystal layer (not shown). The gate line and the plurality of data lines intersect to define a pixel region, and the thin film transistor formed in each cross region is connected to the pixel electrode of each pixel region. The color filter substrate includes red, green, and blue color filters corresponding to each pixel area, a common electrode on a black matrix, a color filter, and a black mattress corresponding to the boundary area of each color filter.

The first and second driving circuits 144 and 146 are connected to the liquid crystal panel 140 via the circuit board 142. The liquid crystal panel 140 is driven by supplying signals to a plurality of gate lines and a plurality of data lines. Let's do it. When the liquid crystal panel 140 controls the voltage of the data signal applied to the pixel electrode while the voltage is applied to the common electrode, the liquid crystal layer is rotated by dielectric anisotropy according to the electric field between the common electrode and the pixel electrode, thereby The image is displayed by transmitting or blocking light for each region. The first and second driving circuits 144 and 146 are in close contact with the outer side of the support main 170 or the back surface of the cover bottom 150 during the assembly process.

The backlight assembly 120 includes a cover bottom 150, a reflective sheet 122 integrally formed with the lamp housing 130 on the cover bottom 150, and a light source 124 composed of a fluorescent lamp inside the lamp housing 130. ), A light guide plate 126 on one side of which faces the light source 124, and a plurality of optical sheets 128 on the light guide plate 126. The inner surface of the cover bottom 150 is composed of a sheet of white or silver, and the light source 124 is arranged along the opening 112 of the support main 170. The light guide plate 126 is positioned on the same plane as the light source 124 on the reflective sheet 122 that is integrally formed with the lamp housing 130, and the light emitted from the light source 124 faces the light source 124 ( The lamp housing 130 is formed to surround three directions along the longitudinal direction of the light source 124 so as to be concentrated on one side of the 126. The light guide plate 126 is formed of polymethyl methacrylate (PMMA), and other materials may be used.

The lamp housing 130 and the reflective sheet 122 form a primary bent surface 162 by upwardly bending one side of the reflective sheet 122 to form a primary bent surface 162, and the primary bent surface in the direction of the reflective sheet 122. By bending inwardly perpendicularly to the primary bent surface, the secondary bent surface 164 is formed to be integrally formed. The reflective sheet 112 functions to reflect the light emitted to the rear surface of the light guide plate 108 to the liquid crystal panel 140.

In the backlight assembly 120, the light emitted from the light source 124 is incident to the side of the light guide plate 126 by the lamp housing 130 and refracted toward the liquid crystal panel 140, and passes through the optical sheet 128. While being processed to a high quality of uniform brightness is supplied to the liquid crystal panel 140. The support main 170 includes an opening 112 for opening one side portion of the lamp housing 130 including the light source 124. The plurality of optical sheets 128 may include a prism sheet, a diffuse sheet, and the like.

As shown in FIG. 6, the support main 170 has a quadrangular shape composed of three sides on which the first to third side portions 172a, 172b, and 172c are formed and one side of the opening portion 112. In addition, protrusions 174 for fastening with the cover bottom 150 are formed at the first and third side portions 172a and 172c positioned at both sides of the opening 112 and adjacent to the opening 112. .

FIG. 7 is a detailed view of the region A of FIGS. 5 and 6, and the first side portion 172a of the support main 170 is illustrated, but the first fastening portion is similar to the region A in the third side portion 172c. The unit 180 is formed. The first fastening part 180 of the support main 170 has a first protrusion 174 protruding outward from the first side edge portion 172a and a first depression formed at an upper portion connected to the first protrusion 174. And a second depression 178 formed at the periphery of the first protrusion 174 and the first depression 176. The first depression 176 is formed deeper than the second depression 178. A first adhesive region 190a to which a double-sided tape (not shown) is attached is provided on the rear surfaces of the first and third side parts 172a and 172c corresponding to the first fastening unit 180.

8A and 8B are detailed views of region B of FIG. 5. FIG. 8A illustrates an outer surface portion of the cover bottom 150 and FIG. 8B illustrates an inner surface portion of the cover bottom 150. The second fastening part 182 is formed at two side parts of the cover main part 150 corresponding to the first and third side parts 172a and 172c of the support main 170. The second fastening part 182 is formed at the two side edges of the cover bottom 150 vertically bent peripheral portion 188 and the peripheral portion 188 and the first protrusion 174 of the support main 170. ) Is formed of an opening 184 into which it is inserted, and a second protrusion 186 which is connected to the opening 184 and installed above the opening 184.

The second protrusion 186 protrudes to the inner surface of the cover bottom 150. The second protrusion 186 of the cover bottom 150 is inserted into the first recess 176 of the support main 170, and the periphery 188 of the cover bottom 150 is the second recess of the support main 170. Inserted into the portion 178, the same surface is maintained without protruding from the first and third side portions 172a and 172c of the support main 170. A second adhesive region 190b is provided on an inner bottom surface of the cover bottom 150 adjacent to the second protrusion 186.

9 is a coupling diagram of the support main and cover bottom. Inserting the lamp housing 130 and the reflective sheet 122 integrally formed in the cover bottom 150, attaching the double-sided tape to the first adhesive region 190a of the support main 170, and the support main 170 The support main 170 and the cover bottom 150 are positioned on the cover bottom 150 and the first protrusion 174 of the first fastening part 180 is inserted into the opening 184 of the second fastening part 182. ). The double-sided tape combines the first adhesive region 190a of the support main 170 and the second adhesive region 190b of the cover bottom 150, and the cover bottom 150 by the load of the cover bottom 150. This function prevents the separation from the support main 170.

The support main 170 and the cover bottom 150 are first fastened by the opening 184 of the cover bottom 150 into which the first protrusion 174 of the support main 170 is inserted. The insertion of the second protrusion 186 of the cover bottom 150 into the first recess 176 formed deeper than the second recess 178 in the support main 170 additionally supports the main main 170 and the cover. This is to strengthen the coupling of the bottom 150. And, by the double-sided tape for bonding the first adhesive region 190a of the support main 170 and the second adhesive region 190b of the cover bottom 150 to the influence of the accumulated self load of the cover bottom 150 As a result, the cover bottom 150 is prevented from being separated from the support main 170. In addition, the periphery 188 of the cover bottom 150 is matched to the second recessed portion 178 of the support main 170, so that the surface of the first and third side portions 172a and 172b of the support main 170 is supported. Does not protrude

In the present invention, a method of assembling a liquid crystal display device is as follows. 10 is an assembly flowchart of the liquid crystal display module according to the present invention. In the first step S01, the lamp housing 130 and the reflective sheet 122 integrally formed in the cover bottom 150 are inserted. In a second step S02, the first fastening part 180 of the support main 170 and the second fastening part 182 of the cover bottom 150 are fastened. The first protrusion 174 of the support main 170 is inserted into the opening 184 of the cover bottom 150, and the second protrusion 186 and the peripheral portion 188 of the cover bottom 150 are each the support main 170. ) Is inserted into the first depression 176 and the second depression 178.

The first adhesive region 190a of the support main 170 and the second adhesive region 190b of the cover bottom 150 are joined by a double-sided tape. In a third step S03, the light source 124 is inserted into the lamp housing 130, and the light guide plate 126, the optical sheet 128, and the liquid crystal panel 140 are stacked on the support main 170. In the fourth step S04, the support main 170 and the cover bottom 150 are assembled and fastened by the rectangular top cover 160 via the liquid crystal panel 140 and the optical sheet 128.

According to the present invention, when the lamp housing 130 and the reflective sheet 122 are integrally formed in the cover bottom 150 and the support main 170 is coupled, the opening 184 and the support main of the cover bottom 150 are supported. Fastening by engagement of the first protrusion 174 of 170, the second protrusion 186 of the cover bottom 150 and the second protrusion 176 of the support main 170, and the coupling by the double-sided tape Therefore, as in the prior art, in order to insert the screw into the fastening hole of the cover bottom, since the cover bottom is not inverted in the state in which the lamp housing and the reflective sheet which are integrally formed are inserted, the occurrence of scratches of the reflecting sheet is prevented, and The deflection of the reflective sheet does not delay assembly, thereby improving work efficiency.

1 is an exploded perspective view of a liquid crystal display module according to the prior art

2A and 2B are plan and side views of a lamp housing and a reflecting plate in a liquid crystal display module according to the related art.

3 is a rear view of a cover bottom in the LCD module according to the related art.

Figure 4 is a rear view of the support main in the liquid crystal display module according to the prior art

5 is an exploded perspective view of a liquid crystal display module according to the present invention.

6 is a rear view of the support main body in the liquid crystal display module according to the present invention.

FIG. 7 is a detailed view of area A of FIGS. 5 and 6;

8A and 8B are detailed views of region B of FIG. 5.

9 is a coupling diagram of the support main and the cover bottom in the liquid crystal display module according to the present invention.

10 is an assembly flowchart of the liquid crystal display module according to the present invention.

Claims (10)

A cover bottom having an opening; A support main having a protrusion and assembled with the cover bottom by inserting the protrusion into the opening through a lamp housing and a reflective sheet; A top cover provided with a light source in the lamp housing and assembled with the support main and the cover bottom through a plurality of optical sheets and a liquid crystal panel; Liquid crystal display module comprising a. The method of claim 1, The support main includes: the protrusion formed on the outer surfaces of the two side portions facing each other; A first depression formed on outer surfaces of the two side portions; A second depression formed around the protrusion and the first depression; Liquid crystal display module comprising a. The method of claim 2, And the first depression is deeper than the second depression. The method of claim 2, And the first recessed portion is formed in contact with an upper portion of the protrusion. The method of claim 2, The cover bottom may include: a peripheral portion vertically bent at two side portions facing each other; An opening formed in the periphery and into which the protrusion is inserted; A second protrusion formed on an inner surface of the peripheral portion and inserted into the first recessed portion; Liquid crystal display module comprising a. The method of claim 5, wherein And the peripheral portion is inserted into the second recessed portion. The method of claim 5, wherein And the peripheral portion is inserted into the second recessed portion to form the same surface as the two side portions of the support main. The method of claim 5, wherein And a second adhesive region formed on a rear surface of the support main adjacent to the protrusion, and a second adhesive region formed on an inner bottom surface of the cover bottom and coupled to the first adhesive region. The method of claim 8, And the first adhesive region and the second adhesive region are joined by a double-sided tape. The method of claim 1, And the lamp housing and the reflective sheet are integrally formed.

Images