KR101569153B1

KR101569153B1 - LCD backlight LCD screen and inosculation device for mobile phones

Info

Publication number: KR101569153B1
Application number: KR1020150083329A
Authority: KR
Inventors: 장용수
Original assignee: 장용수
Priority date: 2015-06-12
Filing date: 2015-06-12
Publication date: 2015-11-13

Abstract

The present invention relates to a device for bonding an LCD for mobile phone with a backlight, which prevents deformation of a BLU to make bonding accurate. The device for bonding an LCD for mobile phone with a backlight comprises: a vertical aligning device (20) which aligns upper and lower sides of the BLU (80) and an LCD (90); a lateral aligning device (40) which aligns both sides of the BLU (80) and the LCD (90); a cylinder (16) which is installed to adjust the height of an alignment space (13); and a pressing fixing device (60) on which a pressing plate (65) is installed.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display (LCD) for mobile phones and a backlight unit, and more particularly, LCD liquid crystal screen and backlight bonding device that aligns backlight and LCD automatically by supplying liquid crystal screen, and pressboard is lowered from the upper side to connect mobile phone LCD and backlight to eliminate defective bonding and ensure accurate bonding .

As is well known, an information display device is an electronic device used as an electro-optical device for converting an electrical signal into a visual image and allowing the human to directly read information.

As one of such electronic information display devices, there are CRT (Cathod-Ray Tube), LED (Light Emitting Diode), PDP (Plasma Display Panel) and LCD which have recently been spotlighted, There is no blur and no static electricity. Therefore, researches for applying LCD to notebooks, CAR navigation systems, computer monitors, and mobile phones have become more active recently.

In general, a liquid crystal display device is equipped with a BLU for diffusing and illuminating light. Such a BLU is a direct-type method of directly illuminating the front surface of a panel by placing a light source under the LCD panel, A light source is placed on the side,

And an edge method in which the light is illuminated by a reflector or the like.

In particular, LCDs used in mobile phones employ edge-based BLUs, and these BLUs are composed of a combination of a backlight assembly and optical films.

A BLU having a thin rim is supplied to a standard or guide having a predetermined size, and then an LCD is supplied to the upper side of the BLU so that the BLU and the LCD are combined to be integrated.

However, when BLU is supplied, it is not limited to a specific part but a bending phenomenon occurs at various positions on a frame made of thin injection molding. When the LCD is placed on the upper side of the bent BLU, The BLU protrudes outside the LCD without being uniformly bonded on the entire surface of the LCD. This causes a defect, and the defective portion reaches 10% when the work is combined with the work, And it is very difficult to apply to a jig.

In addition, it is difficult to apply a variety of jigs due to various sizes and shapes of BLUs and LCDs, and even when applied to a jig, there is still a drawback that the productivity is lowered due to a large number of defects in a bonding operation using manpower.

Document 1. Patent Publication No. 2007-0034862 (published on Mar. 29, 2007) Document 2. Patent Registration No. 0822052 (Registered on Apr. 07, 2008) Document 3. Patent Publication No. 2008-0059718 (published on 07.01.2008) Literature 4. Patent Registration No. 1187204 (Registered on September 25, 2012)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a liquid crystal display (LCD) that is capable of simultaneously operating an upper, lower alignment, The upper and lower alignment pads and both side alignment pads are driven at the same time to align the BLU and the LCD together so as to prevent the BLU from being deformed at any portion to enable accurate bonding.

Another object of the present invention is to arrange the BLU and the LCD together and drive the pushing and fixing device from the upper side to automatically and uniformly bond the BLU and the LCD on all sides by pressing the LCD.

The present invention relates to a liquid crystal display device, A bonding apparatus for supplying a BLU and an LCD to an upper side of an upper plate provided with an operation switch in order to align the upper and lower alignment bars with the side alignment,
The upper and lower movable bands connected to the upper and lower alignment bands and connected to the upper and lower driving bands provided at both sides of the upper and lower drive shafts connected to the upper and lower driving motors are simultaneously driven to align the upper and lower sides of the BLU and LCD. Wow;
A timing pulley connected to the side alignment belt, a timing pulley provided in the side drive motor, and a side pulley connected to the side drive belt disposed on both sides of the timing pulley connected to the timing belt at one end, A side aligning device for aligning both side surfaces of the side surface aligning device;
A cylinder connected to a lower side of the alignment space between the upper and lower alignment units and adapted to adjust a height of the alignment space above the cylinder support;
And a pushing and fixing device in which a pressure plate is installed below the upper and lower conveying belts to which the cylinder axis of the air cylinder provided at the cylinder fixing stand protruded from the rear side of the upper plate to the upper side of the side plate is provided.

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In the present invention, when the BLU is supplied, the upper and lower alignment pads and both side alignment pads are driven simultaneously to set a position for work with a narrower gap in the opposite direction, and the upper and lower alignment pads and both side alignment pads So that it is possible to arrange the supplied BLUs accurately at the same time.

In the present invention, when an LCD is supplied to the upper side of the BLU, the upper and lower alignment pads and the both side alignment pads are simultaneously driven in a standby state after aligning the BLUs so that the BLU and the LCD are aligned together. So as to prevent the deformation phenomenon and provide an effect of being aligned together to enable accurate bonding.

The present invention provides an effect of automatically aligning the BLU and the LCD uniformly on all sides by aligning the BLU and the LCD and then pushing the push plate downward from the upper side to push the LCD supplied on the upper side.

1 is a perspective view showing a preferred embodiment of the present invention.
2 is a front view showing a preferred embodiment of the present invention.
3 is a plan view showing a preferred embodiment of the present invention.
4 is a plan view showing a preferred embodiment of the present invention.
5 is a front sectional view of the BLU according to the present invention
6 is a front sectional view of a state in which the LCD is supplied to the upper side of the BLU of the present invention
FIG. 7 is a front sectional view of a state in which the BLU of the present invention is elevated and combined with an LCD
8 is a plan view showing a state in which the BLU of the present invention is combined with the LCD
9 is a plan view of an installation state of the alignment part of the present invention
10 is a bottom view of the installed state of the vertical alignment device and the side alignment device of the present invention
11 is a cross-sectional view of an installation state of the vertical alignment apparatus of the present invention
12 is a cross-sectional view of the upper and lower alignment apparatus and the side alignment apparatus according to another embodiment of the present invention,
Figure 13 is a cross-sectional view of an installation state of the vertical alignment device and the side alignment device of the present invention in another direction

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

FIG. 1 is a perspective view showing a preferred embodiment of the present invention, FIG. 2 is a front view showing a preferred embodiment of the present invention, FIG. 3 is a plan view showing a preferred embodiment of the present invention, 6 is a front sectional view of the BLU according to the present invention in a state where the LCD is supplied to the upper side of the BLU according to the present invention, FIG. 8 is a plan view showing a state in which the BLU of the present invention is combined with the LCD. FIG.

An alignment space 13 is formed on the upper side of the upper plate 11 made of quadrangle and the BLU 80 to be supplied is fixed to the alignment space 13 by attaching four suction portions 12 to the alignment space 13.

An alignment unit 10 for sequentially supplying and aligning the BLU 80 and the LCD 80 to the alignment space 13;

When the BLU 80 and the LCD 90 are supplied to the alignment unit 10, the upper alignment band 24 and the lower alignment band 31 are simultaneously driven to align the upper side and the lower side, Wow;

A side alignment device 40 driven when the BLU 80 and the LCD 90 are supplied to the alignment unit 10 and the side alignment units 46 and 51 are simultaneously driven to align both sides;

And a pressing and fixing device 60 for lowering and bonding the press plate 65 from the upper side when the BLU 80 and the LCD 90 are supplied and aligned.

The alignment unit 10 is provided with an alignment space 13 on a part of the upper plate 11 and four suction pockets 12 to connect the air hose to the BLU 80 And adsorbed and fixed.

The upper and lower alignment bars 24 and 31 can be moved to the upper plate 11 after the lower alignment bar 31 is installed on the upper part of the alignment space 13, Upper and lower holes 28 and 34 are formed.

Side surfaces of the alignment space 13 are formed with side surface aligning pads 46 and 51 and side surfaces 47 and 52 through which the side aligning pads 46 and 51 can move are formed on the top surface 11 will be.

The upper and lower alignment tables 24 and 31 are formed with LCD supply taps 24a and 31a for supplying the LCD 90 at positions 3 to 7 mm higher than the upper side of the BLU 80 inwardly.

The side plate 61 protrudes from the upper plate 11 on the outer side of the side alignment table 46 and the cylinder fixing table 62 protrudes inside the side plate 61, A cylinder 63 is provided.

A guide rod 66 is provided at a predetermined interval in the side plate 61 and the cylinder axis of the air cylinder 63 is connected to the upper side of the upper and lower conveyance belts 64. The upper and lower conveyance belts 64 And a pushing plate 65 is provided below the upper and lower conveying belts 64 to guide the entire upper surface of the LCD 90 to the upper side So that they can be pressed simultaneously.

A control monitor 18 is provided on one side of the pushing and fixing device 60 to control the driving and an operation switch 14 is provided on a part of the upper plate 11. [

A sensing device 19 is installed on the lower alignment table 31 to sense the supply of the BLU 80 and the LCD 90 to the alignment space 13 and the driving of the cleaning device 70 Stop.

A cleaning device 70 is provided for connecting the air supply device 71 to the alignment space 13 from the upper side of the upper plate 11 and supplying air from the nozzle 72 at the front to remove dust.

A pushing and fixing device 60 is installed on the upper side of the alignment part 10 to drive the push plate 65 to reciprocate upward and downward so that the upper side of the LCD 90 is pressed and fixed.

FIG. 9 is a plan view of an installation state of the alignment unit according to the present invention, FIG. 10 is an installation state bottom view of the vertical alignment apparatus and the side alignment apparatus of the present invention, FIG. 11 is an installation state sectional view of the vertical alignment apparatus of the present invention, FIG. 12 is a sectional view of the upper and lower aligning apparatus and the side aligning apparatus of the present invention in different directions, and FIG. 13 is a sectional view of the upper and lower aligning apparatus and the side aligning apparatus of FIG.

The upper and lower aligning apparatus 20 is installed on the lower side of the upper plate 11 and is connected to the upper and lower drive motors 21 directly and the upper and lower drive shafts 22, The upper driving band 23 and the lower driving band 30 are connected to each other so that the interval between the upper driving band 23 and the lower driving band 30 is narrowed or separated in accordance with the rotational direction of the vertical driving shaft 22 .

The upper movable table 25 is connected to the upper driving table 23 and the upper movable table 25 is connected to the upper guide table 26 installed on the upper plate 11 so as to reciprocate. (25) are connected to move simultaneously with the upper alignment table (24).

The lower moving table 32 is connected to the lower driving table 30 and the lower moving table 32 is connected to the lower guide table 33 installed on the upper plate 11 so as to reciprocate, (32) are connected to move simultaneously with the lower alignment stage (31).

The side aligning device 40 installed on the lower side of the upper plate 11 includes a side drive shaft 45 provided with a timing pulley 43 on the side drive motor 41 and a vertically movable upper drive shaft 22, The side driving shaft 45 is connected to the timing pulley 43a of the side driving shaft 45 by a tie wheel belt 42. The side driving shaft 44 is connected to the side driving shaft 45 at a predetermined interval, So that the distance between the side drive plates 44, 50 is narrowed or spaced apart.

The side moving table 49 is connected to the side driving table 44. The side moving table 49 is connected to the side guide table 48 provided on the upper plate 11 so as to reciprocate, (49) are connected to move simultaneously with the side alignment table (46).

The side moving table 53 is connected to the side driving table 50. The side moving table 53 is connected to the side guide table 54 provided on the upper plate 11 so as to reciprocate, (53) is connected to move simultaneously with the side alignment table (51).

An upper switch 27 is installed on one side of the upper movable table 25 to sense movement and a side switch 55 is installed on one side of the side movable table 53 to sense movement.

A fixing base 18 is provided on the lower side of the alignment space 13 so as to cross the upper plate 11. A fixed base 17 is fixed to a lower end of a guide shaft 17a protruding downward from the alignment space 13. [ And the cylinder axis of the cylinder 16 provided between the cylinder pedestal 17 coupled to the guide shaft 17a and the fixed pedestal 18 is connected to the cylinder pedestal 17, To adjust the height.

The mobile phone LCD screen and backlight unit of the present invention having the above-described configuration can supply the air to the alignment unit 10 through the nozzle 72 formed in front of the air supply unit 71 of the cleaning device 70, The BLU 80 is supplied to the upper side of the alignment unit 10 and the operation switch 14 is pressed to transmit power from the vertical alignment unit 20 to the upper and lower alignment units 24 and 31 The side aligning devices 40 are driven so that the side aligning belts 46 and 51 are spaced at the same time so that both sides of the BLU 80 are aligned with each other, Thereby aligning the side surfaces.

When the up-and-down driving motor 21 is driven, the up-and-down driving device 20 moves the upper driving device 23 and the lower driving device 30, both of which are coupled to each other, The upper and lower movable tables 25 and 32 connected to the upper and lower driving tables 23 and 30 are guided by the upper and lower guide tables 26 and 33, The upper and lower alignment bars 24 and 31 connected to each other through the upper and lower holes 26 and 34 are aligned with the center of the BLU 80 at the same time so as to narrow the gap.

The side aligning device 40 is configured such that when the side driving motor 41 is driven, the upper and lower driving shafts 22 are rotated by the connection of the timing pulleys 43 and 43a and the timing belt 42, 50 are moved at the same time so as to be spaced apart from each other and the side moving bands 49, 53 connected to the side driving bands 44, 50 are guided by the side guide bands 48, 54, The side aligning belts 46 and 52 connected to each other through the side holes 47 and 52 are aligned with the moving belts 49 and 53 at the same time so that the BLU 80 is aligned in the center.

When the upper and lower aligning apparatus 20 and the side aligning apparatus 40 touch the BLU 80 on the oblique plane and are precisely aligned at the center of the alignment space 13 as described above, The upper and lower alignment bars 24 and 31 and the side alignment bars 46 and 51 are fixed through the upper and lower alignment devices 20 and the side alignment devices 40 at the same time Backward.

In the course of performing the above operation, the sensing sensor 19 detects whether the BLU 80 is being supplied and controls whether the cleaning device 70 is operated or not.

In the process of supplying the BLU 80 to the alignment space 13 and the alignment process, the operator stops the operation of the cleaning device 70 and operates after the BLU 80 is aligned to remove dust and foreign substances, 90, the operation is stopped to perform the function of removing dust and foreign matter.

When the upper and lower alignment bars 24 and 31 and the side alignment bars 46 and 51 are pulled back (opened) through the upper and lower alignment devices 20 and the side alignment devices 40, And then the LCD 90 is moved backward to provide a space (size) sufficient to maintain the spacing that can be supplied to the upper and lower alignment rest 24 (24), which is 3 to 7 mm higher than the upper side of the BLU 80 31 and the LCD supply taps 24a, 31a.

When the LCD 90 is supplied, the upper and lower alignment bars 24 and 31 and the side alignment bars 46 and 51 are advanced (narrowed) through the upper and lower alignment devices 20 and the side alignment devices 40 The LCD 90 is aligned on the upper side of the fixed BLU 80 so that the LCD 90 is aligned with the correct position.

The moving distance of the upper and lower heat conducting devices 20 is limited through the upper switch 27 and the moving distance of the side heat conducting devices 40 is limited through the side switches 55. [

After the BLU 80 and the LCD 90 are both aligned, the cylinder axis of the cylinder 16 installed on the fixing table 18 advances, and the cylinder pedestal 15 is moved in the alignment space 13) is raised by 3 to 7 mm so that the BLU 80 is brought into contact with the lower side of the LCD 90.

When the BLU 80 rises and meets the lower side of the LCD 90, the pushing and fixing device 60 is driven to fix the BLU 80 and the LCD 90 together,

When the cylinder shaft is advanced with the air cylinder 63 fixed to the cylinder fixing table 62, the upper and lower conveying belts 64 are lowered and the upper and lower conveying belts 64 are lowered on both guide bases 66 And the lower pressing plate 65 pushes the upper side of the LCD 90 to a uniform pressure on the entire surface so that the BLU 80 and the LCD 90 are jointly fixed.

The BLU 80 and the LCD 90 are provided with bonding portions in advance in the process of bonding and fixing the BLU 80 and the LCD 90 so that mutual bonding and fixing are performed.

After the BLU 80 and the LCD 90 are fixed to each other, the upper and lower conveyance belts 64 are raised again. The upper and lower aligning apparatuses 20, 24 and 31 and the side alignment tables 46 and 51 are opened, so that the BLU 80 and the LCD 90 are separated from each other and the operation is terminated.

When the BLU 80 is connected to the LCD 90, the cylinder support 15 is lowered by 3 to 7 mm downward through the cylinder 16 to stop the alignment space 13.

Each of the above-described work processes is performed by setting up a required work process in the control monitor 18, and is installed in any part of the production process of the mobile phone to allow the work to be performed.

Since the BLU 80 and the LCD 90 are aligned at the same time by the driving of the vertical alignment device 20 and the side alignment device 40 and the fixing is performed at a correct position and the pressing plate 65 is uniformly pressed, And after the correct alignment is made, it is bonded at uniform pressure on the entire surface.

The present invention relates to a very useful invention for precisely aligning the upper and lower sides and both sides of a BLU and LCD so that the BLU and the LCD can be precisely aligned, .

10: alignment part 11: top plate
12: absorption part 13: alignment space
14: Operation switch 15: Cylinder support
16: cylinder 17: fixed base
17a: Guide shaft 18: Control monitor
19: Detection sensor 20: Vertical alignment device
21: Up and down drive motor 22: Up and down drive shaft
23: upper drive table 24: upper sorting table
24a, 31a: LCD supply chin 25:
26: upper guide band 27: upper switch
28: upper hole 30: lower driving block
31: lower alignment table 32: lower moving table
33: lower guide base 34: lower hole
40: side aligning device 41: side drive motor
42: timing belt 43, 43a: timing pulley
44, 50: side drive belt 45: side drive shaft
46, 51: side alignment stand 47, 52: side hole
48, 54: side guide bands 49, 53:
60: Retainer 61: Side plate
62: cylinder holder 63: air cylinder
64: Up and down conveying stand 65:
66: guide 70: cleaning device
71: feeder 72: nozzle
80: BLU 90: LCD

Claims

Supplying and bonding the BLU 80 and the LCD 90 so as to be laminated; A liquid crystal display device is provided in which a BLU 80 and an LCD 90 are sequentially supplied to an upper side of an upper plate 11 provided with an operation switch 14 to align the upper and lower alignment bars 24 and 31 with the side alignment bars 47 and 51 In the apparatus,
And upper and lower drive tables 23 and 30 connected to the upper and lower alignment tables 24 and 31 and connected to the upper and lower drive tables 23 and 30 installed on both sides of the upper and lower drive shafts 22 connected to the up and down drive motor 21, (20) for aligning the upper and lower sides of the LCD (90) with the BLU (80) by simultaneously driving the liquid crystal panels (25, 33);
A timing pulley 43 connected to the side alignment tables 47 and 51 and a timing pulley 43 provided to the side drive motor 41 and a timing pulley 43a connected to the timing belt 42 are connected to a side drive shaft 45, The side alignment devices 40 and 40 are connected to the side driving units 44 and 50 provided on both sides of the LCD 90 to align the side surfaces of the BLU 80 and the LCD 90, Wow;
A cylinder 16 connected to the lower side of the alignment space 13 between the upper and lower alignment bars 24 and 31 and provided to adjust the height of the alignment space 13 on the upper side of the cylinder support 15, ;
A pressing plate 63 is provided on the lower side of the upper and lower conveying belts 64 to which the cylinder axis of the air cylinder 63 provided on the cylinder fixing table 62 protruded from the rear side of the upper plate 11 to the front side of the side plate 61, (60) on which the liquid crystal display panel (65) is mounted.

The method according to claim 1,
The vertical alignment device 20 includes upper and lower alignment bars 24 and 31 formed with LCD supply taps 24a and 31a at positions 3 to 7 mm higher than the upper side of the BLU 80, The upper and lower movable tables 25 and 33 connected to the upper and lower drive tables 23 and 30 provided at both sides of the upper and lower drive shafts 22 connected to the upper and lower drive motors 21, And the upper and lower guides are connected to the upper and lower guide stands (26 and 33) fixed to the lower side of the upper plate (11) and are simultaneously driven to align the upper and lower sides of the LCD (90) LCD screen and backlight unit.

The method according to claim 1,
The side aligning device 40 is connected to the side aligning belts 47 and 51 and the side holes 47 and 52 and is connected to the timing pulley 43 provided on the side driving motor 41 and the timing belt 42 Side moving belts 49 and 53 connected to the side driving belts 44 and 50 provided on both sides of the side driving shaft 45 provided at one end of the pulley 43a are fixed to the lower side of the upper plate 11 The liquid crystal screen and the backlight unit are installed so that both side surfaces of the BLU (80) and the LCD (90) align with each other after being connected to the guide bases (48, 54).

The method according to claim 1,
The cylinder 16 is installed below the fixing table 18 fixed to the lower side of the upper plate 11 and the fixing pedestal 17 is installed below the guide shaft 17a projected to the lower side of the alignment space 13 , And a cylinder (16) is provided on an upper side of a cylinder pedestal (15) coupled to the guide shaft (17a) so as to be movable up and down.

The method of claim 3,
The cylinder 61 of the air cylinder 63 is connected to a cylinder fixing table 62 protruding from the center of the side plate 61 installed upward from the rear of the upper plate 11 to the upper side, The upper and lower conveying belts 64 are connected to the guide belts 66 provided on both sides of the side plates 61 so as to be reciprocated in the vertical direction, And a control monitor 18 is installed on one side of the side plate 61. The liquid crystal display according to claim 1,