KR20100077820A - Liquid crystal display device module including a light emitting diode array - Google Patents

Abstract

PURPOSE: A liquid crystal display device module including a light emitting diode array is provided to reduce the production cost through eliminating usage of double sided tape. CONSTITUTION: An LED(Light Emitting Diode) array comprises an LED FPC(Flexible Printed Circuit)(161), a plurality of LEDs(162), and an LED FPC terminal wiring(163) and LED FPC terminal unit(164). The LED FPC is separately arranged to one side with a light guiding plate(125). The LED FPC terminal wiring is expanded to rear side of a cover bottom(115). A top cover(170) is contracted with the cover bottom into one as surrounding the edge of a liquid crystal panel(145). In a main FPC(180), a first and a second holes is designed into a location corresponding to the LED FPC terminal unit.

Description

Liquid Crystal Display Device Module including A Light Emitting Diode Array}

The present invention relates to a liquid crystal display module, and more particularly, to a liquid crystal display module including an LED that can reduce the production cost by eliminating the use of double-sided tape.

In general, the liquid crystal display, which is one of the flat panel display devices, has a better visibility than the cathode ray tube (CRT) and is smaller than the cathode ray tube of the screen size having the same average power consumption. Along with the devices and the field emission display devices, they are recently attracting attention as the next generation display devices for mobile phones, computer monitors, and televisions.

The driving principle of the liquid crystal display device is to use optical anisotropy and polarization property of the liquid crystal. Since the liquid crystal is thin and long in structure, the liquid crystal has directivity in the arrangement of molecules, and artificially applies an electric field to the liquid crystal to control the direction of the molecular arrangement. Can be.

Accordingly, if the molecular arrangement direction of the liquid crystal is arbitrarily adjusted, the molecular arrangement of the liquid crystal is changed, and light is refracted in the molecular arrangement direction of the liquid crystal due to optical anisotropy to express image information.

However, since the liquid crystal display is a light-receiving element that does not emit light by itself, it requires a separate light source, and the light emitted from the backlight unit serving as the light source is incident on the liquid crystal panel and the light transmitted through the arrangement of the liquid crystals. The amount is adjusted to display an image.

Hereinafter, a liquid crystal display module according to the related art will be described with reference to the accompanying drawings.

1 is an exploded perspective view illustrating a liquid crystal display module according to the related art.

As shown in the drawing, the liquid crystal display module 5 according to the related art has a cover bottom 15 positioned at the bottom thereof, and a main supporter 40 surrounding the edge of the cover bottom 15 at an upper portion of the cover bottom 15. Is located. In addition, the upper portion of the cover bottom 15 and the main supporter 40 is sequentially mounted to the reflecting plate 30 for improving the scattering characteristics and the light guide plate 25 for securing the light collecting characteristics.

A plurality of optical members 35 are positioned on the light guide plate 25, and an LED array 60 spaced apart from the light guide plate 25 is mounted at an inner end of the main supporter 40. The upper portion of the optical member 35 is mounted with a liquid crystal panel 45, and the upper portion of the liquid crystal panel 45 is equipped with a top cover 70 which covers its edge and is integrally fastened with the cover bottom 15. do. The back of the cover bottom 15 is equipped with a main FPC (80) mounted with an inverter (not shown) to drive the LED array 60.

In this case, the reflector 30 is made of a material having a good reflectance, the optical member 35 is a diffusion sheet, a prism sheet and a protective sheet for the purpose of improving the light efficiency. It can be comprised in the form which laminated | stacked many films, such as a sheet). The reflector 30, the light guide plate 25, the optical member 35, and the LED array 60 may be referred to as a backlight unit 10.

The LED array 60 includes an LED FPC 61 extending in one direction inside the main supporter 40, a plurality of LEDs 62 mounted on the LED FPC 61, and a plurality of LEDs 62. LED FPC terminal wiring 63 connected in series and the LED FPC terminal 64 located at one end of the LED FPC terminal wiring 63.

At this time, the LED FPC terminal 64 is connected to the main FPC 80 positioned on the rear surface of the cover bottom 15 in a vertical bent state through the opening F located at one side of the cover bottom 115. Although not shown in detail in the drawings, the LED FPC terminal 64 is electrically connected to the main FPC terminal (not shown) mounted in the main FPC 80 through a soldering process. That is, the LED FPC terminal 64 undergoes a soldering process of electrically contacting a main FPC terminal (not shown) designed at a position corresponding to the LED FPC terminal during assembly. Accordingly, the plurality of LEDs may receive a driving signal from an inverter (not shown) mounted in the main FPC 80.

Hereinafter, a liquid crystal display module according to the related art will be described in detail with reference to the accompanying drawings.

2A and 2B are rear perspective views of a liquid crystal display module according to the related art, and FIG. 2C is a view for describing a soldering process defect. 2A and 2B illustrate pre- / post-steps of the soldering process of the LED FPC terminal unit and the main FPC terminal unit, and description thereof will be omitted.

2A, 2B, and 2C, the LED FPC terminal wiring 63 is pulled out of the main supporter 40 through one side opening F of the cover bottom 15 and then vertically bent. The soldering process for electrically connecting the main FPC terminal 74 mounted on the main FPC 80 positioned on the rear surface of the cover bottom 15 is performed.

At this time, the first surface 63a of the LED FPC terminal wiring 63 is the first surface 80a of the main FPC 80 and the second surface 80b of the main FPC 80 is the cover bottom 15. ) Are assembled in a direction to abut each. In particular, both sides of the LED FPC terminal 64 positioned at one end of the LED FPC terminal wiring 63 in contact with the first surface 80a of the main FPC 80 are exposed to the outside. The LED FPC terminal 64 is electrically connected through a soldering process in a state in which a predetermined portion overlaps with the main FPC terminal 74 mounted on the main FPC 80.

Prior to the soldering process, the double-sided tape 50 is attached to the first surface 63a of the LED FPC terminal wiring 63. The double-sided tape 50 is preferably attached so that a predetermined area overlaps with the first surface 80a of the main FPC 80, and is attached so as not to overlap with the LED FPC terminal 64. At this time, the double-sided tape 50 functions to fix the first surface 63a of the LED FPC terminal wiring 63 and the first surface 80a of the main FPC 80 before proceeding with the soldering process. .

That is, the double-sided tape 50 is intended to firmly fix the LED FPC terminal 64 to the main FPC 80 before proceeding the soldering process for connecting the LED FPC terminal 64 and the main FPC terminal 74. Used as At this time, as shown in Figure 2c, the LED FPC terminal wiring 63 and the LED FPC terminal 64 made of a metal or plastic material when the double-sided tape 50 is not used, the main body by its elastic force A phenomenon that occurs at a certain distance from the FPC 80 often occurs. This phenomenon causes misalignment during the soldering process, which causes a poor contact between the LED FPC terminal 64 and the main FPC terminal 74. Furthermore, the soldering process itself cannot be performed. Doing.

At this time, after the soldering process of electrically connecting the LED FPC terminal 64 and the main FPC terminal 74 is completed, the double-sided tape 50 is not required, but the double-sided tape 50 is applied for ease of soldering. It is.

In particular, in order to efficiently work, a plurality of liquid crystal display modules (5 in FIG. 1) are arranged side by side, more specifically, a direction intersecting with the first surface 63a of the LED FPC terminal wiring 63. After attaching the double-sided tape 50 along, the double-sided tape 50 is selectively attached in such a manner as to cut a portion except for the first surface 63a of the LED FPC terminal wiring 63. At this time, the double-sided tape 50 cut when attached to the first surface 63a of the LED FPC terminal wiring 63 is disposed of, and the production cost increases due to excessive use of the double-sided tape 50. Is causing.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to reduce production costs by eliminating the use of double-sided tape in a liquid crystal display module including an LED array.

A liquid crystal display module including an LED array according to the first embodiment of the present invention for achieving the above object comprises a cover bottom; A main supporter surrounding an edge of the cover bottom and an upper portion thereof; A reflecting plate, a light guide plate, and an optical member which are sequentially mounted on the main supporter; LED FPC disposed to one side spaced apart from the light guide plate, a plurality of LEDs mounted on the LED FPC, a plurality of LEDs connected in series, LED FPC terminal wiring extending to the back of the cover bottom, and the LED FPC terminal An LED array including an LED FPC terminal unit positioned at one end of the wiring; A liquid crystal panel mounted on the optical member; A top cover surrounding the edge of the upper portion of the liquid crystal panel and integrally fastened with the cover bottom; And a main FPC mounted on a rear surface of the cover bottom and having first and second holes designed at positions corresponding to the LED FPC terminal units.

At this time, the LED FPC terminal unit is made of an LED FPC terminal, and the LED FPC terminal integrally, characterized in that it comprises a first and second protrusions branched in a form spaced apart at regular intervals on both the left and right sides. The first and second protrusions are fastened to the first and second holes.

The LED FPC terminal portion is characterized in that designed in the shape of a hook or trident. The LED FPC terminal unit is connected to the main FPC terminal mounted on the main FPC by a soldering process.

A liquid crystal display module including an LED array according to a second embodiment of the present invention for achieving the above object comprises a cover bottom; A main supporter surrounding an edge of the cover bottom and an upper portion thereof; A reflecting plate, a light guide plate, and an optical member which are sequentially mounted on the main supporter; LED FPC disposed to one side spaced apart from the light guide plate, a plurality of LEDs mounted on the LED FPC, a plurality of LEDs connected in series, LED FPC terminal wiring extending to the back of the cover bottom, and the LED FPC terminal An LED array including an LED FPC terminal unit positioned at one end of the wiring; A liquid crystal panel mounted on the optical member; A top cover surrounding the edge of the upper portion of the liquid crystal panel and integrally fastened with the cover bottom; It is mounted to the back of the cover bottom, characterized in that it comprises a main FPC is designed for the locking end hole to a position corresponding to the LED FPC terminal portion.

At this time, the LED FPC terminal unit is made integrally with the LED FPC terminal, and the LED FPC terminal, and includes a locking end patterned in a slit shape to the center. The locking end is designed to have a double stepped LED terminal wiring, it is characterized in that the fastening to the locking end hole.

The present invention has the effect of reducing the production cost by eliminating the double-sided tape by changing the fastening structure in the module to the liquid crystal display including the LED array.

--- First Embodiment ---

The first embodiment of the present invention is characterized in that the LED FPC terminal portion is designed and changed into a hook type, and the first and second holes are designed in a position corresponding to the hooked LED FPC terminal portion in the main FPC.

Hereinafter, a liquid crystal display module according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

3 is an exploded perspective view illustrating a liquid crystal display module according to a first embodiment of the present invention.

As shown, the liquid crystal display module 105 according to the first embodiment of the present invention is located at the bottom cover cover 115, the upper portion of the cover bottom 115 surrounds the edge of the cover bottom 115 The main supporter 140 is located. In addition, a reflective plate 30 for improving the scattering characteristics and a light guide plate 125 for securing the light collecting characteristics are mounted on the cover bottom 115.

A plurality of optical members 135 are positioned above the light guide plate 125, and an LED array 160 spaced apart from the light guide plate 125 is mounted at an inner end of the main supporter 140. The upper portion of the optical member 135 is seated on the liquid crystal panel 145, the upper portion of the liquid crystal panel 145 is wrapped around its edge and the top cover 170 which is integrally fastened with the cover bottom 115 is mounted do. The back of the cover bottom 115 is equipped with a main FPC 180 mounted with an inverter (not shown) to drive the LED array 160.

In this case, the reflector 130 is made of a material having a good reflectance, and the optical member 135 is a diffusion sheet, a prism sheet, and a protective sheet for the purpose of improving light efficiency. It can be comprised in the form which laminated | stacked many films, such as a sheet). The reflective plate 130, the light guide plate 125, the optical member 135, and the LED array 160 are referred to as a backlight unit 110.

The LED array 160 includes an LED FPC 161 extending in one direction inside the main supporter 140, a plurality of LEDs 162 mounted on the LED FPC 161, and the plurality of LEDs 162. LED FPC terminal wiring 163 connected in series, and the LED FPC terminal 164 located at one end of the LED FPC terminal wiring 163. Particularly, the LED FPC terminal unit 164 is manufactured integrally with the LED FPC terminal 164a and the LED FPC terminal 164a, and the first and second protrusions branched in the form spaced apart at regular intervals on both the left and right sides thereof ( 164b, 164c). That is, the LED FPC terminal unit 164 according to the first embodiment of the present invention is designed in the shape of a hook or trident.

The LED FPC terminal unit 164 is exited to the outside of the main supporter 140 through one side opening F of the cover bottom 115. At this time, the LED FPC terminal unit 164 is connected to the main FPC 180 located on the rear surface of the cover bottom 115 in a vertical bent state. In particular, the LED FPC terminal unit 164 is electrically connected to the main FPC terminal (not shown) mounted at one end of the main FPC 180 through a soldering process. Accordingly, the plurality of LEDs 162 may receive a driving signal from an inverter (not shown) mounted in the main FPC 180.

At this time, the main FPC 180 has a portion corresponding to the LED FPC terminal portion 164 when assembled with the LED FPC terminal portion 164, more specifically, the first and second protrusions 164b of the LED FPC terminal portion 164; The first and second holes H1 and H2 are designed at positions corresponding to 164, respectively. Accordingly, the LED FPC terminal unit 164 may be fastened to the main FPC 180 through the first and second holes H1 and H2. Since the first and second holes H1 and H2 can be easily manufactured through press working, the LED FPC terminal unit 164 can be firmly fixed to the main FPC 180 without additional cost.

In summary, in the first embodiment of the present invention, the LED FPC terminal portion 164 is designed and changed into a hook shape, and the first of the LED FPC terminal portion 164 is assembled when the LED FPC terminal portion 164 and the main FPC 180 are assembled. And firmly fixing the LED FPC terminal portion 164 to the main FPC 180 without using a double-sided tape through designing the first and second holes H1 and H2 in positions corresponding to the second protrusions 164a and 164b. You can do it. Therefore, in the first embodiment of the present invention, there is no fear of misalignment and there is an effect of reducing the production cost by eliminating the use of double-sided tape.

This will be described below in more detail with reference to the accompanying drawings.

4A is an enlarged plan view of an LED FPC terminal unit according to a first embodiment of the present invention, and FIG. 4B is a rear perspective view of a liquid crystal display module according to the first embodiment of the present invention, and FIG. 4C is an LED FPC terminal unit. Is a rear view showing a state in which the first and second protrusions of the state are fastened to the second surface of the main FPC through the first and second holes.

As shown in FIG. 4A, the LED FPC terminal unit 164 according to the first embodiment of the present invention includes an LED FPC terminal 164a positioned at one end of the LED FPC terminal wiring 163 of FIG. 3 and the LED. It is manufactured integrally with the FPC terminal 164a, and includes first and second protrusions 164b and 164c branched in a form spaced apart at regular intervals on both the left and right sides thereof. That is, the LED FPC terminal portion 164 is formed in a hook shape or trident shape. As shown in FIG. 4B and FIG. 4C, the LED FPC terminal 164a has either the first surface 163a or the second surface 163b of the LED FPC terminal wiring 163 exposed or both sides thereof. All may be exposed.

At this time, the LED FPC terminal unit 164 is pulled out of the main supporter 140 through one side opening F of the cover bottom 115, and then folded in a vertically bent state to be positioned on the rear surface of the cover bottom 115. The main FPC terminal (not shown) mounted on the main FPC 180 is electrically connected to each other through a soldering process.

In this case, a first surface (not shown) of the LED FPC terminal wiring 163 is a first surface 180a of the main FPC 180 and a second surface 180b of the main FPC 180 is a cover bottom ( 115) are assembled in abutting direction. In particular, the first and second protrusions 164b and 164c of the LED FPC terminal unit 164 correspond to the first and second holes H1 and H2 designed in the main FPC 180 in such a manner that a worker directly fastens the same. Assembly proceeds.

Therefore, in the first embodiment of the present invention, there is a structural advantage that the LED FPC terminal unit 164 can be firmly fixed to the main FPC 180 even without using the double-sided tape. At this time, when the LED FPC terminal unit 164 is fastened to the main FPC 180, one end of the second surface 163b of the LED FPC terminal wiring 163 which contacts the second surface 180b of the main FPC 180. The LED FPC terminal 164 positioned at may be aligned with a main FPC terminal and a predetermined portion thereof.

Therefore, since the double-sided tape does not need to be used in the first embodiment of the present invention, the production cost can be reduced by that much.

--- Second Embodiment ---

The second embodiment of the present invention is characterized in that the LED FPC terminal portion is designed to be slit-shaped.

Hereinafter, a second embodiment of the present invention will be described with reference to the accompanying drawings.

5A is a rear perspective view illustrating a state in which the LED FPC terminal unit is fastened to the main FPC according to the second embodiment of the present invention, and FIG. 5B is a view mainly showing the LED FPC terminal unit.

5A and 5B, the LED FPC terminal unit 264 according to the second embodiment of the present invention includes an LED FPC terminal 264a positioned at one end of the LED FPC terminal wiring 263 and the LEDs. It is manufactured integrally with the FPC terminal wiring 264a, and includes a locking end 264b patterned in a slit shape at the center thereof. At this time, the locking end 264b is spaced apart from the LED FPC terminal 264a by a predetermined distance and designed by patterning the LED FPC terminal wiring 263, and the locking end 264b is the main FPC 280. It is fastened to the locking end (H) designed in. The locking end 264b may be firmly fastened to the locking end hole H by designing a double step.

This second embodiment is preferably applied to the portable or mobile for which the area of the LED FPC terminal wiring 263 and the LED FPC terminal portion 264 and the area of the main FPC 280 is produced in a similar size.

Accordingly, in the second embodiment of the present invention, as in the first embodiment, even if the double-sided tape is not used, the production cost can be reduced due to the structural advantage of firmly fixing the LED FPC terminal unit 264 to the main FPC 280. It has an effect.

However, the present invention is not limited to the first to third embodiments, and it will be apparent that various modifications and changes can be made without departing from the spirit and the spirit of the present invention.

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

2A and 2B are rear perspective views of the liquid crystal display module according to the related art, respectively.

2C is a view for explaining a soldering process failure.

3 is an exploded perspective view showing a liquid crystal display module according to a first embodiment of the present invention.

4A is an enlarged plan view of the LED FPC terminal unit according to the first embodiment of the present invention;

4B is a rear perspective view illustrating a liquid crystal display module according to a first embodiment of the present invention.

4C is a rear view showing a state in which the first and second protrusions of the LED FPC terminal portion are fastened to the second surface of the main FPC through the first and second holes.

5A is a rear perspective view illustrating a state in which the LED FPC terminal unit is fastened to the main FPC according to the second embodiment of the present invention.

Fig. 5B shows the LED FPC terminal part mainly.

* Explanation of symbols for the main parts of the drawings *

110: backlight unit 115: cover bottom

125: light guide plate 130: reflecting plate

135: optical member 140: main supporter

145: liquid crystal panel 161: LED FPC

162: LED 163: LED FPC terminal wiring

164: LED FPC terminal 170: top cover

180: main FPC H1, H2: first and second holes

Claims (8)

A cover bottom; A main supporter surrounding an edge of the cover bottom and an upper portion thereof; A reflecting plate, a light guide plate, and an optical member which are sequentially mounted on the main supporter; LED FPC disposed to one side spaced apart from the light guide plate, a plurality of LEDs mounted on the LED FPC, a plurality of LEDs connected in series, LED FPC terminal wiring extending to the back of the cover bottom, and the LED FPC terminal An LED array including an LED FPC terminal unit positioned at one end of the wiring; A liquid crystal panel mounted on the optical member; A top cover surrounding the edge of the upper portion of the liquid crystal panel and integrally fastened with the cover bottom; A main FPC mounted on a rear surface of the cover bottom and designed with first and second holes in a position corresponding to the LED FPC terminal; Liquid crystal display module comprising a LED array comprising a. The method of claim 1, The LED FPC terminal unit is formed integrally with the LED FPC terminal, and the LED FPC terminal, LED array, characterized in that it comprises a first and second projections divided in a form spaced apart at regular intervals on both the left and right sides thereof; Liquid crystal display module comprising. The method of claim 2, And the first and second protrusions are fastened to the first and second holes. The method of claim 1, The LED FPC terminal unit is a liquid crystal display module comprising an LED array, characterized in that designed in the shape of a hook or trident. The method of claim 1, And the LED FPC terminal unit is connected to a main FPC terminal mounted on the main FPC by a soldering process. A cover bottom; A main supporter surrounding an edge of the cover bottom and an upper portion thereof; A reflecting plate, a light guide plate, and an optical member which are sequentially mounted on the main supporter; LED FPC disposed to one side spaced apart from the light guide plate, a plurality of LEDs mounted on the LED FPC, a plurality of LEDs connected in series, LED FPC terminal wiring extending to the back of the cover bottom, and the LED FPC terminal An LED array including an LED FPC terminal unit positioned at one end of the wiring; A liquid crystal panel mounted on the optical member; A top cover surrounding the edge of the upper portion of the liquid crystal panel and integrally fastened with the cover bottom; The main FPC is mounted on the rear surface of the cover bottom and has a locking end hole designed to correspond to the LED FPC terminal unit. Liquid crystal display module comprising a LED array comprising a. The method of claim 6, The LED FPC terminal unit is a liquid crystal display module including an LED array, characterized in that the LED FPC terminal, and the LED FPC terminal is integrally manufactured, the LED FPC terminal comprises a locking end patterned in a slit shape to the center. The method of claim 7, wherein The locking end is designed to have a double step of the LED terminal wiring, the liquid crystal display module comprising an LED array, characterized in that coupled to the locking end hole.

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