KR20150015210A - Portable repair system for display device and operating method thereof - Google Patents

Abstract

The present invention relates to a portable repair system for a display device and an operating method thereof. The portable repair system for a display device according to the present invention includes: a repair module including a laser radiating unit to radiate a laser beam, a stage module to detect a bright dot defect position in the display device, an optical module to process the laser beam and to image the bright dot defect position in the display device, and a distance guide part to guide a distance to the display device; and a support part installed therein with the repair module, to support the repair module and to move the repair module to the bright dot defect position in the display device. The display device may be repaired regardless of time, location, the type and the size by applying the portable repair system for a display device according to the present invention.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable repair system for a display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable repair system and a method of operating the same, which enables portable devices to be repaired anytime and anywhere.

2. Description of the Related Art In recent years, the display field has rapidly developed in line with the information age. In response to this trend, a flat panel display device (FPD) having a thinness, light weight, LCD, and organic light emitting diode (OLED) display devices have been widely used with excellent performance.

Of these flat panel displays, a liquid crystal display exhibits an image realization principle based on optical anisotropy and polarization of a liquid crystal, which is advantageous for moving picture display and has a relatively large contrast ratio.

Such a liquid crystal display device has a liquid crystal panel in which a liquid crystal panel is interposed between a first substrate and a second substrate facing each other through a liquid crystal layer as an essential component, To realize the difference in transmittance.

However, since the liquid crystal panel does not have its own light emitting element, a separate light source is required to display the difference in transmittance as an image. To this end, a backlight unit having a light source is disposed on the back surface of the liquid crystal panel .

On the other hand, the organic light emitting diode display uses a self-luminous element, so that it can be lightweight and thin because it does not require a backlight unit used in a liquid crystal display which is a non-luminous element.

In addition, the organic light emitting diode display device has advantages of relatively high viewing angle and contrast ratio, quick response time, low power consumption, and low-voltage direct current driving as compared with a liquid crystal display device, . Further, since the internal components are solid, they are resistant to external impact and have a wide temperature range.

The liquid crystal display device and the organic light emitting diode display device having comparatively excellent performance as described above are being manufactured in various sizes in accordance with the needs of the user, as the use area of the portable computer, the desktop computer monitor, the wall-mounted television, The trend is toward a large-scale.

At this time, the liquid crystal display device includes a first substrate manufacturing process for forming a gate line, a data line, a thin film transistor (TFT) and a pixel electrode on a first substrate, a black matrix, a color filter, A first substrate and a second substrate are bonded to each other and cut in a cell unit, and a liquid crystal is injected between a first substrate and a second substrate in units of cells to form a unit cell ) Process, and a module process for assembling with a backlight unit. The organic light emitting diode display includes a first substrate for forming a pattern on a first substrate and a first substrate for depositing an organic thin film, A second substrate manufacturing process for performing a sealing process on the second substrate, and a laminating process for attaching the first substrate and the second substrate to each other.

Each of the manufacturing processes of the liquid crystal display device and the organic light emitting diode display device as described above includes a plurality of inspection processes.

At this time, defective spot defects may occur in the liquid crystal display device or the organic light emitting diode display device, which have been judged as good products in the final inspection. This is because the foreign matter introduced in the manufacturing process sticks to the wiring or the like later, causing a short circuit between the wirings, so that a defective spot is generated in which some pixels always emit light.

In Korea, one bad spot defect pixel is not allowed in the determination of the good product according to the product grade standard. Because the manufacturing cost of the liquid crystal display device or the organic light emitting diode display device is insufficient, The defective spot defect is resolved and reused.

At this time, it is costly to store repairing equipment corresponding to each of the liquid crystal display device or the organic light emitting diode display device manufactured in various sizes for each service center, so that the liquid crystal display device or the organic light emitting diode display device Transferred, repaired, and then delivered to the user. As a result, the repair cost and time are increased, and further, the total manufacturing cost of the liquid crystal display device or the organic light emitting diode display device is increased.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a portable repair system and a portable repair system for a display device that can repair defectives immediately at a service center or a site And to provide a method of operation.

It is another object of the present invention to provide a portable repair system of a display device and a method of operating the same, which can repair a defective spot defect regardless of the size of the display device.

It is another object of the present invention to reduce the repairing cost and time of the display device and further reduce the overall manufacturing cost of the display device.

According to an aspect of the present invention, there is provided a portable repair system for a display device, comprising: a laser emitting unit that emits a laser beam; a stage module that detects a defective spot position in a display device; And a distance guide unit for guiding a distance from the display unit to the display unit, and a repair module for supporting the repair module, the repair module including a defective spot defect in the display unit, The stage module, the optical module, and the distance guide portion are coupled to the upper portion of the support portion or separated from the support portion, do.

And a coupling unit connecting the laser oscillating unit and the laser output unit in the form of a cable, wherein the coupling unit is an optical fiber cable.

In this case, the laser oscillating unit is an optical fiber laser in which an active medium is applied as an optical fiber, or an optical fiber coupled laser in which a carrier is applied as an optical fiber.

Also, the laser beam emitted from the laser oscillation unit may be a red aiming laser beam for confirming the irradiation position or a repair laser beam for repair.

The stage module includes a first adjustment knob that moves in micrometric units and adjusts the movement in the X direction that is a lateral direction to the screen of the display device, a second adjustment knob that adjusts the vertical Y direction, And a third adjustment knob for adjusting the Z direction which is the normal direction.

The optical module may further include a slit part for adjusting the size and shape of the laser beam, a first reflecting mirror part for changing the traveling path of the laser beam, And a second reflection mirror part and a third reflection mirror part for acquiring image light with respect to defective spot position of the display device by acting as a reflection mirror or glass according to brightness with a translucent mirror, An imaging unit for condensing the image light acquired by the third reflecting mirror unit and converting the image light into an image, and a controller for controlling the imaging unit to irradiate the defective spot position of the display unit with a laser beam And an object lens unit.

A portable display device connected to the optical module and displaying the image obtained by the optical module on a screen; a plurality of lenses; a storage unit for storing a plurality of images by the plurality of lenses; And a variable lens module which is constituted by a control part for adjusting the direction of the lens of the portable display device and calculates coordinate information for moving the defective spot position of the display device displayed on the screen of the portable display device to the center of the screen and outputs the coordinate information .

Here, the object lens unit may further include an adjustment unit capable of adjusting a lens magnification, and the imaging unit may further include an enlargement lens, wherein the total lens magnification is a product of a lens magnification by the regulator and a lens magnification by the magnification lens .

In particular, the display device is erected perpendicular to the paper surface, and the distance guide portion makes the repair module installed at a right angle to the surface of the display device and the surface of the display device at 90 degrees, And the distance between the surface of the repair module and the repair module is kept constant.

The display device may include a curved surface type display device having a curved surface, or a borderless type display device having no bezel.

The operating method of the portable repair system of the display device according to the present invention is the operating method of the portable repair system of the display device according to any one of the items 1 to 10, A first step of installing a first electrode; A second step of moving the repair module to a defective spot position of the display device; A third step of irradiating the aiming laser beam to confirm an irradiation position for repairing in advance; And a fourth step of repairing and repairing the repair laser beam.

The first step may include the steps of installing the stage module on an upper part of the support part, disposing an optical module on which the laser output part is mounted on the stage module, And installing the distance guide portion in the guide groove.

The second step is characterized in that the supporting part includes moving the repair module, and the stage module moving the optical module.

The step of causing the stage module to move the optical module includes the steps of: the variable lens module calculating and outputting coordinate information for moving the defective spot position to the center of the screen, and outputting, based on the coordinate information, And a moving step of moving the moving object.

Adjusting the lens magnification to a high magnification after the step of moving the optical module based on the coordinate information; and calculating and outputting coordinate information for moving the defective spot position to the center of the screen And moving the optical module based on the coordinate information.

The fourth step may include: cutting a connection pattern connecting a source terminal of the driving thin film transistor and an anode of the organic light emitting diode within a pixel of the defective defective position; and a connection pattern connecting the reference voltage and the source terminal of the sensing thin film transistor. Cutting a connection pattern connecting a driving voltage and a drain terminal of the driving thin film transistor, and electrically connecting the anode and the cathode of the organic light emitting diode to each other .

According to the portable repair system of the display device according to the present invention, there is no need to transfer the display device to the factory for the repair process, and the display device can be directly installed in the field (for example, Defective defects can be repaired so that repairing cost and time can be saved, and further, the total manufacturing cost of the display device can be reduced.

Further, defective defects can be repaired irrespective of the size of the display device, and even a display device with difficulty in handling, such as a curved surface type display device or a bezelless borderless type display device, There is an effect that the portable repair system of the display device according to the present invention can be applied without the need to apply the system.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1A is a circuit diagram of a pixel of an organic light emitting diode display according to an embodiment of the present invention; FIG.
FIG. 1B is a view for explaining a method for repairing defective defects in FIG. 1A; FIG.
2 is a schematic view of a portable repair system of a display device according to an embodiment of the present invention;
Fig. 3 is a diagram showing a part of the configuration of the repair module of Fig. 2 as an example. Fig.
FIG. 4A is a diagram showing a configuration of the laser oscillating portion of FIG. 2 as an embodiment. FIG.
FIG. 4B is a view showing another embodiment of the configuration of the laser oscillating portion of FIG. 2. FIG.
5 is a flowchart illustrating a method of operating a portable repair system of a display device according to an embodiment of the present invention.
6A to 6C are diagrams for explaining a method of operating a portable repair system of a display device.
FIG. 7A is a view showing a state in which a laser beam is irradiated to a display device according to an embodiment of the present invention; FIG.
FIG. 7B is a view showing a state in which the repair laser beam is irradiated in FIG. 7A. FIG.
Fig. 8 is a view showing another configuration of a part of the repair module of Fig. 2 as another example; Fig.
9 is a view showing a configuration of the variable lens module of Fig. 8;
FIG. 10 is a flowchart for explaining a method of operating a portable repair system of a display device to which the variable lens module of FIG. 9 is applied.

Hereinafter, an organic light emitting diode (OLED) display device will be described as an embodiment of the present invention. The organic light emitting diode display device is manufactured through a plurality of manufacturing processes and inspection processes.

FIG. 1A is a circuit diagram of a pixel of an organic light emitting diode display according to an exemplary embodiment of the present invention, and FIG. 1B is a view for explaining a method of repairing defective defects in FIG. 1A.

1A, one pixel P of the organic light emitting diode display device includes a switching thin film transistor STr, a driving thin film transistor DTr, a sensing thin film transistor STr, SSTr), a storage capacitor (StgC), and an organic light emitting diode (E).

The pixel P is defined by a gate line GL formed in a first direction and a data line DL formed in a second direction intersecting the first direction, The switching thin film transistor STr is formed at the intersection of the pixel electrodes GL and GL.

The gate terminal of the switching thin film transistor STr is connected to the gate line GL, and the source terminal is connected to the data line DL.

The switching thin film transistor STr is controlled to be turned on or turned off by the scan signal Vscan applied through the gate line GL so that the turn- And outputs the data voltage applied through the data line DL.

In the pixel P, a driving thin film transistor DTr electrically connected to the switching thin film transistor STr is formed.

At this time, the gate terminal of the driving thin film transistor DTr is connected to the drain terminal of the switching thin film transistor STr, the drain terminal is connected to the driving voltage VDD, and the source terminal is connected to one terminal of the organic light emitting diode E And is electrically connected to the anode.

At this time, the cathode which is the other terminal of the organic light emitting diode E is connected to a base low voltage VSS having a potential lower than the driving voltage VDD, for example, a ground potential.

A storage capacitor StgC is formed between the gate electrode and the source electrode of the driving thin film transistor DTr and a sensing thin film transistor SSTr is electrically connected to the source electrode of the driving thin film transistor DTr.

The sensing thin film transistor SSTr is turned on or off according to the sensing signal SENSE and connects the reference voltage Vref to the source terminal of the driving thin film transistor DTr at the time of turning on. Here, the sensing signal SENSE is a signal generated from a gate driver (not shown), and a gate driver (not shown) generates a plurality of signals including a scan signal Vscan and a sensing signal SEN.

The sensing thin film transistor SSTr is configured to detect a variation component of the threshold voltage Vth of the driving thin film transistor DTr. The variation component of the threshold voltage Vth is fed back to the control section (not shown) The threshold voltage (Vth) fluctuation component of the threshold voltage (Dtr) is removed. As a result, the level of the current flowing through the organic light emitting diode E can be maintained constant, and thus a high-quality organic light emitting diode display device exhibiting a uniform luminance can be implemented.

As described above, one pixel P of the organic light emitting diode display device according to the embodiment of the present invention includes three transistors and one capacitor 3T-1C. By including three transistors in this way, The current level flowing through the organic light emitting diode E of each pixel is kept constant. As the driving time of the organic light emitting diode display device increases, the deterioration of the organic light emitting diode display device accelerates and the emission capability decreases. Since the degradation speed of the organic light emitting diode is different for each pixel, The display quality of the display device can be maintained.

On the other hand, a defective spot defect often occurs in a specific pixel of the organic light emitting diode display device. This is caused by fine foreign matter or static electricity inserted during the manufacturing process, and most organic light emitting diode display devices can be used again by repairing a specific pixel in which a defective defective spot has occurred, to a dark spot.

At this time, various methods of repairing defective dot defects generated in one pixel to a dark spot will be described with reference to FIG. 1B.

1B, a connection pattern (wiring) for connecting the source terminal of the driving thin film transistor DTr and the anode of the organic light emitting diode E is cut off and then disconnected (①), or the reference voltage Vref and the sensing The connection pattern connecting the source terminal of the thin film transistor SSTr is disconnected and the connection pattern for connecting the driving voltage VDD to the drain terminal of the driving thin film transistor DTr is cut, (4) by electrically connecting the anode and the cathode of the organic light emitting diode (E) to each other to repair defective defects.

FIG. 2 is a schematic view showing a portable repair system of a display device according to an embodiment of the present invention, and FIG. 3 is a view showing a part of the configuration of the repair module of FIG. 2 in more detail. Here, the display device corresponds to the organic light emitting diode display device.

2, the portable repair system 100 of the display device mainly includes a support portion 104, a fixture portion including the table portion 106 and the hard case portion 130, and a lattice point of the display device 102 And a repair module 110 for repairing.

The support 104 supports the repair module 110 and may be a tripod or similar device that serves to move the repair module 110 to a defective spot position of the display device 102.

The support portion 104 is provided to move the repair module 110 in the X direction which is the left and right direction with respect to the surface of the display device 102, the Y direction which is the vertical direction and the Z direction which is perpendicular to the surface of the display device 102 One or more adjustment knobs 105 may be included. Here, the support 104 serves to move the repair module 110 to near defective spot position of the display device 102, and the stage module 117 of the repair module 110, which will be described later, And moves the optical module 115 finely to accurately move the defective spot of the display device 102 to the defective spot.

The table unit 106 is for fixing the display unit 102 to the ground perpendicularly and preventing external shocks and vibrations from being transmitted to the display unit 102, and may be a desk provided at home or office.

Or the table portion 106 may be a vibration isolation table that is safe from external shocks and vibrations.

At this time, the table unit 106 may include a pedestal 107 for vertically fixing the display device 102, and the pedestal 107 may be provided for the display device 102.

The hard case part 130 is a case for storing and transporting the repair module 110 and is preferably made of a material capable of protecting the repair module 110 from an external impact.

The hard case part 130 can be used as a table means as well as a storage and transportation means of the repair module 110. The operator puts the portable display device 120 on the upper part of the hard case part 130, can do.

Hereinafter, the repair module 110, which is a core component of the present invention and is substantially stored in the hard case unit 130 and transported, will be described.

The repair module 110 processes the laser beam so that the bright spots of the display device 102 can be repaired through the laser beam emitted from the laser output unit 113, An optical module 115 for imaging the defective spot position of the display device 102 and a distance guide portion 116 for guiding the distance between the display device 102 and the stage 102 for detecting defective spot positions in the display device 102. [ Module 117, as shown in FIG.

The laser emitting unit 113 emits a laser beam to the optical module 115, and may include a collimator (not shown).

A collimator (not shown) serves to convert the light beam scattered or concentrated in the laser beam incident through the coupling part 112 into a collimated or parallel light beam.

The laser emitting unit 113 corresponds to an element constituting the laser module.

Here, the laser module includes a laser oscillation unit 111 for oscillating a laser beam through an external power source supplied through a power cable 111a, a laser emission unit 113 for emitting a laser beam oscillated in the laser oscillation unit 111, And a connection part 112 connecting the laser oscillating part 111 and the laser output part 113.

The connection part 112 corresponds to a cable and separates the laser oscillating part 111 having a large volume and weight from the laser output part 113 to reduce the overall weight of the repair module 110 and to facilitate carrying of the laser module .

It is most preferable that the connection portion 112 is an optical fiber cable having a small transmission loss, a small volume and a light weight.

The optical module 115 is connected to the portable display device 120 so that the defective spot of the display device 102 can be repaired while viewing the defective spot of the display device 102. The optical module 115 images the defective spot position in the display device 102, 113 to irradiate the defective spot of the display device 102 to the defective spot position.

3, the optical module 115 includes a slit portion 210, a first reflection mirror portion 220, a relay lens portion 230, a second reflection mirror portion 240, A third reflecting mirror portion 250, an illumination portion 260, a transmission lens portion 265, an object lens portion 280, and an imaging portion 290. At this time, the optical module 115 may further include one or more lenses or other configurations, and some configurations may be omitted.

The slit part 210 is a part capable of adjusting the size and shape of the laser beam emitted from the laser output part 113 and includes slits (not shown) to remove unnecessary energy parts of the laser beam. At this time, the slit portion 210 may include an adjustment knob 212 that allows the user to manually adjust the size and shape.

At this time, the slit portion 210 may be a knife type having an adjustable slit groove, or may be a pattern (PTN) type applying a mask having a slit formed in advance. Here, the pattern type slit portion 210 has an advantage that an operator can easily select a desired pattern through the adjustment knob 212 in a state in which several fixed patterns are embedded. In addition, since it is a predetermined pattern, it is possible to apply a relatively accurate pattern to the adjustment of the operator and to minimize the contact of the operator with the adjustment knob 212, so that the adjustment time and the total repair time can be saved.

The first reflection mirror unit 220 changes the traveling path of the laser beam emitted from the slit unit 210 to the first direction.

The relay lens unit 230 serves to improve the light-condensing and uniformity of the laser beam passing through the first reflecting mirror unit 220. Here, the relay lens unit 230 may be a variable lens module. To explain this, a variable lens module including a plurality of lenses may be included in place of the relay lens portion in order to more accurately irradiate the defective spot of the laser beam. That is, a variable lens module or a similar configuration, which is a structure that can improve the irradiation precision of the laser beam by compensating the alignment margin, can be applied.

The second reflection mirror portion and the third reflection mirror portion 240 and 250 are semitransparent mirrors. The mirrors 240 and 250 function as reflecting mirrors according to illumination characteristics including a laser and wavelength and polarization characteristics. On the other hand, It corresponds to a half mirror.

The second reflection mirror unit 240 changes the traveling path of the laser beam incident through the relay lens unit 230 in the second direction toward the object lens unit 280 and outputs the light spot of the target display unit 102 So that the laser beam is irradiated to the defective position.

The second reflection mirror unit 240 acquires the image light for the defective spot position of the display device 102 through the illumination reflected by the third reflection mirror unit 250 and transmits the acquired image light .

The third reflection mirror unit 250 reflects the illumination light from the illumination unit 260 to the second reflection mirror unit 240 and then transmits the image light transmitted from the second reflection mirror unit 240 to the image sensing unit 290. [ .

The illumination unit 260 emits illumination for acquiring image light, and the transmission lens unit 265 transmits illumination emitted from the illumination unit 260.

The illumination unit 260 may be a white LED as a light source.

The object lens unit 280 irradiates the laser beam whose path has been changed through the second reflection mirror unit 240 to the defective spot position of the target display device 102 as a target.

At this time, the object lens unit 280 includes an adjustment unit 285 capable of adjusting the lens magnification. Accordingly, the operator can accurately focus the laser beam by adjusting the magnification of the lens with the adjustment unit 285 of the object lens unit 280, and irradiate the laser beam to the defective spot position of the display device 102.

The image pickup unit 290 focuses the image light obtained by the third reflection mirror unit 250 and converts the image light into an image image corresponding to a defective spot position of the display device 102. The image pickup unit 290 includes a charge coupled device ).

At this time, the image sensing unit 290 may include a zoom lens 295 that can enlarge the defective spot position of the display device by adjusting the focal distance.

The enlargement lens 295 adjusts the magnification of the lens together with the adjustment unit 285 of the object lens unit 280. The overall magnification of the lens is adjusted by the lens magnification of the magnifying lens 295 and the lens magnification of the object lens unit 280 As shown in FIG.

The image pickup unit 290 is connected to the portable display device 120. Accordingly, the image of the defective spot of the display device is displayed on the portable display device 120, and the image of the defective spot of the defective spot on the display device and the repair information are recorded in the portable display device 120.

A distance guide 116 for guiding a distance between the display device 102 and the repair module 110 is disposed at a portion adjacent to the object lens unit 280. The distance guide 116 and the object lens unit 280 And may be arranged in a straight line so as to face the surface of the display device 102 at a constant interval.

The distance guide portion 116 has a structure in which the repair module 110 installed perpendicularly to the surface of the display device 102 standing vertically with respect to the paper surface and the surface of the display device 102 has 90 degrees, The working distance (WD) between the surface of the device 102 and the object lens portion 280 of the repair module 110 is kept constant.

As described above, the distance guide unit 116 is included in the portable repair system 100 of the display device according to the present invention, so that the display screen on which the image is displayed is formed as a curved surface, or a borderless type without a bezel The portable repair system of the display apparatus according to the present invention can be applied to a display apparatus which is difficult to handle, such as a display apparatus of the present invention, without the need to apply a dedicated repair system.

The stage module 117 is located below the optical module 115 and is connected to the imaging section 290 of the optical module 115 and is movable in the X direction that is the left and right direction with respect to the surface of the display device 102, And an adjustment knob 118 for finely moving in the Z direction perpendicular to the surface of the display device 102. [ The movement in the X direction and the Y direction is for detecting a defective spot where the defective spot is generated by scanning the XY screen of the display device 102 installed perpendicular to the paper surface and the motion in the Z direction is detected by the display device 102 And the repair module 110 are kept constant.

The stage module 117 moves in micrometer units (탆) by the adjustment knob 118 and can move up to 20 mm in each of the x direction, the y direction, and the z direction.

Accordingly, the operator can see the image acquired by the imaging unit 290 and use the adjustment knob 118 of the stage module 117 to adjust the position of the stage module 117 in the x, -x direction or in the vertical direction y, The defective position where the defective spot is generated on the screen of the display device 102 is detected by moving the defective spot 117. [

Such a stage module 117 may be constituted by a piezoelectric drive linear motor including a piezoelectric body, a magnetic body, and a permanent magnet. With this configuration, manufacturing costs can be reduced as compared with a general super-precision stage module, and it is possible to reduce the size and weight. In addition, the stage module 117 can detect the defective position where the defective spot is generated in the display device 102, irrespective of the size and the type of the display device 102.

Although the passive stage module including the adjustment knob 118 has been described above, the automatic stage module not including the adjustment knob 118 may be applied. In this case, the portable display device 120 is directly connected to the stage module, and the operator moves the stage module through the portable display device 120 to detect the defective position where the defective spot is generated on the screen of the display device 102 do.

The repair module 110 configured as described above can be implemented to have a portable weight, for example, about 20 kg. When the repair module 110 is coupled to the repair module 110, the stage module 117 is disposed on the upper part of the support part 104, It is possible to complete the installation by disposing the optical module 115 on which the output unit 113 is mounted and the distance guide unit 116 between the optical module 115 and the display device to separate the repair module 110 The optical module 115 and the stage module 117 are sequentially separated from the supporting portion 104 and the laser emitting portion 113 is separated from the optical module 115. In this case, The disassembly can be completed by inserting the components into the hard case part 130. [

FIG. 4A is a diagram illustrating the configuration of the laser oscillating unit of FIG. 2 as an embodiment, and FIG. 4B is a diagram illustrating the configuration of the laser oscillating unit of FIG. 2 as another embodiment.

Generally, the laser oscillation section includes a pumping source for generating energy, an active medium for amplifying the excitation source, and a resonator for oscillating the laser beam amplified through the active medium.

The present invention is characterized in that an optical fiber is applied to a laser oscillating portion, and can be classified into an optical fiber coupled laser and an optical fiber laser. This will be described in more detail with reference to the drawings.

4A, the laser oscillating unit 111a includes a carrier 311 made of an optical fiber, a laser diode or a flash lamp is applied to the excitation source 312, an active medium 314, a Nd: YAG (neodymium doped yttrium aluminum garnet), Nd: YVO 4 (neodymium doped yttrium orthovanadate), Nd: YLF (neodymium doped yttrium lithium fluoride) , and and apply one of ytterbium (Yitterbium), the first mirror to the resonator a mirror 315, and a second mirror 316 are applied. The first mirror 315 and the second mirror 316 are disposed to face each other with the active medium 314 interposed therebetween. The first mirror 315 is a total reflection mirror that totally reflects incident laser light. The second mirror 316 is a partial reflection mirror that partially passes the incident laser light and reflects a part thereof.

The laser oscillating unit 111a includes a rod-like solid active medium 314 wrapped around a carrier 311 made of an optical fiber, and the first and second mirrors 315, 316 are inserted into the carrier 311 while facing each other.

The excitation light input from the laser diode or the flash lamp 312 is amplified by the active medium 314 and oscillated by the first and second mirrors 315 and 316 as a laser beam, And is output through a carrier 311 composed of a plurality of pixels. In this case, the output laser beam may be a continuous wave (CW) outputted at a constant intensity or a pulsed wave (PW) repeatedly output momentarily, and may have a wavelength within a range of 1030 to 1070 nm or a wavelength of 1550 nm .

The output of the laser oscillator 111a having such a structure is relatively high, and it is easy to add a configuration for wavelength conversion to the rear stage. A wavelength converter (not shown) may further include a wavelength converter (not shown) at the rear end of the laser oscillating unit 111a. The wavelength converter converts a wavelength of the laser beam into a wavelength more suitable for repair, (Second-Harmonic Generation Wavelength Conversion Crystal).

Referring to FIG. 4B, the laser oscillating unit 111b includes a laser diode as an excitation source 322 in the optical fiber cable 321, a yitterbium (Yb) or erbium (Er) laser beam as an active medium 324, ) And a first mirror 325 and a second mirror 326, which are resonators, are included. At this time, a pump 328 may be further added to energize the active medium 324 so as to facilitate amplification.

The excitation light input from the laser diode 322 is amplified by the optical fiber 324 doped with a rare earth element such as Yitterbium (Yb) or erbium (Er) (325, 326) and output as a laser beam. In this case, the output laser beam may be a continuous wave (CW) output at a constant intensity or a pulsed wave (PW) repeatedly output at an instant, and may have a wavelength within a range of 1030 to 1070 nm or a wavelength within a range of 1550 nm have.

An optical fiber gragg grating (FBG) (not shown) may be applied instead of the first and second mirrors 325 and 326 serving as a resonator. Here, the optical fiber Bragg grating (not shown) may be provided on the front end and the rear end of the optical fiber 324 by being provided with two chip optical fiber gratings.

Further, the optical fiber 324 may have a double clad structure of an outer cladding and an inner cladding to withstand the high energy of the laser beam circling the inside. Accordingly, when light is pumped to the inner cladding at both ends or the side face of the optical fiber 324, the inner cladding has a higher refractive index than that of the outer cladding. Therefore, the excitation light input from the laser diode 322 is totally reflected and transmitted in the inner cladding, At this time, the excitation light is amplified while repeatedly passing through the core, and is oscillated by the first and second mirrors 325 and 326 to be output as a laser beam.

Since the laser oscillating portion 111b having such a structure is included in the optical fiber cable 321 in all its constitutions, the structure is simple compared to the laser oscillating portion 111a in FIG. 4A, the alignment of the respective components is not changed, It is inexpensive and light in weight, which makes it easier to carry.

As described above, the laser oscillating units 111a and 111b may be formed of an optical fiber coupled laser in which a carrier 311 for transmitting a laser beam is applied as an optical fiber as shown in FIG. 4A, An optical fiber laser in which an active medium is applied as an optical fiber can be applied.

The laser beams output from the laser oscillating units 111a and 111b may be output in two types. One laser beam is a repair laser beam for repairing a defective pixel, and the other laser beam And is an aiming laser beam for confirming the repair position of the defective pixel in advance.

This is possible by applying an optical fiber. The laser beam output by using the laser diode 312 or 322 as the excitation source and the optical fiber as the active medium 324 or the carrier 314 has a red or blue laser having a relatively low output of several mW. And an aiming laser beam of green wavelength is included. Thus, by irradiating the aiming laser beam to the defective spot position before irradiating the repair laser beam, it is possible to confirm the precise irradiation position and irradiate the repair laser beam.

The portable repair system of the display device configured as described above is advantageous in that repairing can proceed by directly irradiating the display device 102 with a laser beam without having to remove the module of the display device 102 in particular.

At this time, a polarizing plate (not shown) for selectively transmitting only specific light is attached to the outer surface of the display panel of the display device 102. At this time, the transmittance of the polarizing plate is 90% or more in a wavelength region of 900 nm or more.

The portable repair system of the display device according to the present invention outputs a laser beam having a wavelength of 1064 nm as a repair laser beam, so that it is possible to repair defective defects without damaging the polarizer (not shown).

FIG. 5 is a flowchart for explaining a method of operating a portable repair system of a display device according to an embodiment of the present invention. FIGS. 6A to 6C are views for explaining a method of operating a portable repair system of a display device, FIG. 7B is a view showing a state in which a repair laser beam is irradiated in FIG. 7A, and FIGS. 1 to 4A and 4B are diagrams showing a state in which a laser beam is irradiated to a display device according to an embodiment of the present invention. .

First, the operator lights the display device 102 in advance as shown in Fig. 6A, and displays the approximate position of the defective spot on the screen of the display device 102 with a marking member such as a sticker M.

The operator places the support 104 near the sticker M and installs the repair module 110 on the support 104 (S11). More specifically, the stage module 117 is disposed on the upper portion of the support portion 104, the optical module 115 on which the laser output portion 113 is mounted is disposed above the stage module 117, The installation of the repair module 110 can be completed by disposing a distance guide portion (116 in Fig. 1) between the optical module 102 and the optical module 115. [

6B, the optical module 115 is moved to the defective spot position of the display device 102 by the support portion 104 and the stage module 117, and the defective spot position is displayed on the portable display device (Step S12). Here, the large movement in the X direction, the Y direction, or the Z direction with respect to the XY screen of the display device 102 is adjusted by the adjustment knob 105 of the support portion 104 and the small movement (in micrometers) And the adjustment knob 118 of the switch 117 adjusts. The adjustment knob 118 of the stage 117 includes a first adjustment knob 118a for adjusting the X direction in the horizontal direction with respect to the XY screen of the display device 102 as shown in Figs. 6B and 6C, A second adjustment knob 118b for adjusting the Y direction in the vertical direction, and a third adjustment knob 118c for adjusting the Z direction in the normal direction.

At this time, the lens magnification of the object lens unit 280 or the magnifying lens 295 of the optical module 115 can be adjusted for accurate aiming. Since the lens magnification is determined by multiplying the lens magnification of the object lens unit 280 by the lens magnification of the magnifying lens 295, the lens magnification can be adjusted by adjusting one or both lens magnifications.

Next, as shown in FIG. 7A, the aiming laser beam is irradiated by the optical module 115 to the irradiation position 410a for repairing the defective spot position of the display device 102, (S13), the defective laser beam is irradiated to the irradiation position 410b of the display device 102 by the optical module 115 as shown in Fig. 7B, whereby defective defects are corrected S14).

Finally, the repair result is confirmed (S15), the repair operation is completed, and each of the components of the repair module 110 is disassembled and inserted into the hard case part (130 in FIG. 1).

Meanwhile, the step S12 or S13 may further include a slit adjusting step of adjusting the size and shape of the laser beam. 6C, the optical module 115 includes at least one adjustment knob 212a and 212b capable of adjusting the size or direction of the slit, and the adjustment knob 212a, 212b to adjust the size and shape of the laser beam.

Hereinafter, a portable repair system for a display device for faster repair and an operation method thereof will be described.

FIG. 8 is a view showing a part of the structure of the repair module of FIG. 2 as another example, and FIG. 9 is a view showing a structure of the variable lens module of FIG. Since the configuration except for the variable lens module is the same as that of FIG. 3, the same reference numerals are assigned to the same components, and a detailed description thereof will be omitted.

8, the optical module 315 includes a slit part 210, a first reflection mirror part 220, a relay lens part 230, a second reflection mirror part 240, 3 includes a reflective mirror unit 250, an illumination unit 260, a transmission lens unit 265, an object lens unit 280, a variable lens module 300, and an imaging unit 290.

The variable lens module 300 which is a core structure of the other embodiment of the present invention is shown as being positioned between the magnifying lens 295 and the imaging unit 290, As shown in FIG.

Here, the variable lens module 300 is configured to focus the target to the center of the screen. The variable lens module 300 automatically calculates the coordinate information for positioning the focus at the center of the screen according to the change of the position (distance) of the target, 290 to the portable display device (120 of FIG. 2) connected thereto. Accordingly, the operator adjusts the adjustment knob (118 in Fig. 2) of the stage module (117 in Fig. 2) using the coordinate information displayed on the portable display device (120 in Fig. 2) . That is, the defective spot position of the display device 102 is displayed at the center of the screen of the portable display device (120 in FIG. 2).

The variable lens module 300 includes a lens unit 301 for capturing and acquiring a plurality of images in various directions with respect to a target, a storage unit (not shown) for capturing an image captured by the lens unit 301 303 and a control unit 305 for controlling the lens unit 301. [

Here, the control unit 305 can adjust the directions of the plurality of lenses 302 of the lens unit 301 so as to capture and acquire various images of the target according to the change of the position (distance) of the target. At this time, the control unit 305 can control the plurality of lenses 302 of the lens unit 301 according to the image processing algorithm stored therein.

At this time, the image processing algorithm adjusts the direction of each of the lens units 301 so that a plurality of images of targets in various directions can be obtained, and the coordinates Information can be automatically calculated and a clear image can be displayed on the screen. Accordingly, since the coordinate information for causing the focus of the stage module (117 in FIG. 2) to be located at the center of the screen is automatically calculated and outputted, the manual adjustment time for position adjustment is minimized, and the total repair time .

The operation of the portable repair system of the display device to which the variable lens module 300 is applied will be described in more detail with reference to FIG.

10 is a flowchart illustrating an operation method of a portable repair system of a display device to which the variable lens module of FIG. 9 is applied. Here, the configuration of the portable repair system except for the variable lens module is the same, and the operation method of the portable repair system is the same except for the operation of the variable lens module.

First, as shown in Fig. 6A, the operator assumes that the approximate position of the defective spot on the screen of the display device 102 is displayed with a marking member such as the sticker M by previously lighting the display device 102 do.

The operator places the support 104 near the sticker M and installs the repair module 110 on the support 104 (s11). More specifically, the stage module 117 is disposed on the upper portion of the support portion 104, the optical module 115 on which the laser output portion 113 is mounted is disposed above the stage module 117, The installation of the repair module 110 can be completed by disposing a distance guide portion (116 in Fig. 1) between the optical module 102 and the optical module 115. [

The lens magnification state is displayed by the adjustment section 105 and 118 of the support section 104 and the stage module 117 so that the optical module 115 is displayed in the low magnification state as the initial setting state in which the lens magnification state is not adjusted Is moved to the defective spot position of the device 102, and the defective spot defective position is displayed on the portable display device (120 of FIG. 2) connected to the optical module 115 (s21). Here, a large movement in the X direction, the Y direction, or the Z direction with respect to the XY screen of the display device 102 is adjusted by the adjustment knob 105 of the support portion 104, and a small fine movement (in micrometers) Is adjusted by the adjustment knob 118 of the module 117 when the optical module 115 is in a first position that is greatly distorted from the approximate defective defective position by the adjustment knob 105 of the support 104, The position of the display device 102 is moved to the defective spot position of the display device 102 by the adjustment knob 118 of the stage module 117 and the screen of the portable display device 120 The defective spot position is displayed on the screen. At this time, the adjustment knob 105 of the support part 104 may also be moved to the second position and the defective spot position may be displayed on the screen of the portable display device 120 (FIG. 2).

When the defective spot position is displayed on the screen of the portable display device (120 in Fig. 2), the variable lens module (300 in Fig. 8) operates to shift the screen center position, i.e., defective spot position, ) And outputs it to the screen of the portable display device (120 in Fig. 2) (s22).

By adjusting the adjustment knob (118 in Fig. 6B) of the stage module (117 in Fig. 6B) by moving the position of the optical module (115 in Fig. 6B) based on the coordinate information, (S23).

Thereafter, in order to irradiate the repair beam, the lens magnification is adjusted to a high magnification state to enlarge the defective spot defective position (s24). Here, the lens magnification is determined by multiplying the lens magnification of the object lens portion 280 (FIG. 6B) by the magnification of the magnification lens 295 (FIG. 6B) Or adjusting the adjustment portion of the object lens portion (280 in Fig. 6B) together with the magnifying lens (295 in Fig. 6B).

The lens magnification is adjusted and the variable lens module (300 of FIG. 8) operates to calculate coordinate information for moving the defective spot position expanded at a high magnification to the center of the screen, (S25).

Accordingly, the position of the optical module (115 in FIG. 6B) is moved by the adjustment knob (118 in FIG. 6B) of the stage module (117 in FIG. 6B) based on the coordinate information displayed on the screen, Is positioned in the center of the portable display device (120 in Fig. 2) (s26).

Next, as shown in Fig. 7A, the aiming laser beam is irradiated by the optical module (115 of Fig. 6B) to the irradiation position 410a for repairing defective spot position of the display device 102, The irradiated position of the repair laser beam is irradiated to the irradiation position 410b of the display device 102 by the optical module 115 as shown in Fig. 7B, (S14).

Finally, the repair result is confirmed (S15), the repair operation is completed, and each of the components of the installed repair module (110 of FIG. 6B) is disassembled and inserted into the hard case part (130 in FIG.

As described above, the method of operating the portable repair system of the display device by the variable lens module according to another embodiment of the present invention is different in step s12 of FIG. That is, according to the application of the variable lens module, step s12 of FIG. 5 can be divided into steps s21 to s25. The manually adjustable repeated operation is automatically performed by applying the variable lens module (300 of FIG. 8) It is possible to eliminate the repetitive manual adjustment operation, thereby making it possible to perform the adjustment operation more quickly. As a result, the total repair time can be reduced and the efficiency can be increased.

Although the portable repair system of the display device according to the present invention has been described with reference to the organic light emitting diode display device, the present invention is also applicable to a liquid crystal display device.

That is, the embodiments of the present invention are merely illustrative, and those skilled in the art can freely make modifications without departing from the gist of the present invention. Accordingly, the protection scope of the present invention includes modifications of the present invention within the scope of the appended claims and equivalents thereof.

100: Portable repair system of display
102: display device 104: support
106: Table 130: Hard case part
110: Repair module 111: Laser oscillation part
112: connection part 113: laser output part
115: optical module 117: stage module

Claims (16)

A stage module for detecting a spot defect position in the display device; an optical module for processing the laser beam to image the defective spot position in the display device and a distance from the display device to a guide A repair module including a distance guide portion
And a support for supporting the repair module and moving the repair module to a defective spot position in the display device,
Wherein the laser emitting portion, the stage module, the optical module, and the distance guide portion of the repair module are coupled to the upper portion of the support portion or detached from the support portion.
The method according to claim 1,
A laser oscillation unit for oscillating the laser beam;
Further comprising a connecting portion for connecting the laser oscillating portion and the laser emitting portion in the form of a cable,
Wherein the connection is an optical fiber cable.
The method according to claim 1,
The laser oscillating unit
Wherein the optical fiber is an optical fiber laser in which an active medium is applied as an optical fiber or an optical fiber coupled laser in which a carrier is applied as an optical fiber.
The method of claim 3,
The laser beam oscillated in the laser oscillation section
A portable repair system of a display device which is either a red aiming laser beam for confirming the irradiation position in advance or a repair laser beam for repair.
The method according to claim 1,
The stage module includes a first adjustment knob that moves in micrometric units and adjusts the movement in the X direction that is the left and right direction with respect to the screen of the display device, a second adjustment knob that adjusts the Y direction in the vertical direction, And a third adjustment knob for adjusting the Z direction of the display device.
The method according to claim 1,
The optical module
A slit part for adjusting the size and shape of the laser beam,
A first reflection mirror part for changing a traveling path of the laser beam,
A relay lens unit that improves the focusing and uniformity of the laser beam by the first reflecting mirror unit,
A second reflection mirror part and a third reflection mirror part which acquire image light with respect to defective spot position of the display device by acting as a reflection mirror or a glass according to brightness with a translucent mirror,
An illumination unit for emitting light to the third reflection mirror unit,
An image pickup unit for condensing the image light obtained by the third reflecting mirror unit and converting the image light into an image image;
And an object lens unit that irradiates a laser beam to a defective spot position of the display device.
7. The method according to claim 1 or 6,
A portable display device connected to the optical module and displaying an image image obtained by the optical module on a screen,
A plurality of lenses, a storage unit for storing a plurality of images by the plurality of lenses, and a control unit for controlling the directions of the plurality of lenses, wherein the defective spot position of the display device displayed on the screen of the portable display device And a variable lens module for calculating and outputting coordinate information for moving the center of the screen to the center of the screen.
The method according to claim 6,
The object lens unit may further include an adjustment unit capable of adjusting a lens magnification,
Wherein the imaging unit further comprises a magnifying lens,
Wherein the total lens magnification is determined by a product of a lens magnification by the regulator and a lens magnification by the magnifying lens.
The method according to claim 1,
The display device is erected perpendicular to the ground,
Wherein the distance guide unit is configured to make the repair module installed at a right angle to the surface of the display device and the surface of the display device to be 90 degrees and to maintain a constant distance between the surface of the display device and the repair module Portable repair system.
10. The method of claim 9,
The display device
A portable repair system of a display device comprising a display device of a curved surface type in which a screen is formed as a curved surface or a display device of a borderless type without a bezel.
10. A method of operating a portable repair system of a display device according to any one of claims 1 to 10,
A first step of installing the repair module on the support part;
A second step of moving the repair module to a defective spot position of the display device;
A third step of irradiating the aiming laser beam to confirm an irradiation position for repairing in advance; And
And a fourth step of repairing and repairing the repair laser beam.
12. The method of claim 11,
In the first step,
Installing the stage module on an upper portion of the support portion,
Disposing an optical module on which the laser output unit is mounted on the stage module;
And installing the distance guide portion between the display device and the optical module.
13. The method of claim 12,
The second step comprises:
Moving the support module to move the repair module;
Wherein the stage module moves the optical module. ≪ Desc / Clms Page number 21 >
14. The method of claim 13,
Wherein the stage module moves the optical module,
Calculating the coordinate information for moving the defective spot position to the center of the screen and outputting the coordinate information;
And moving the optical module based on the coordinate information.
15. The method of claim 14,
After the step of moving the optical module based on the coordinate information,
Adjusting the lens magnification to a high magnification,
Calculating the coordinate information for moving the defective spot position to the center of the screen and outputting the coordinate information;
And moving the optical module based on the coordinate information.
12. The method of claim 11,
In the fourth step,
Cutting a connection pattern connecting the source terminal of the driving thin film transistor and the anode of the organic light emitting diode within the pixel of the defective spot position;
Cutting the connection pattern connecting the reference voltage and the source terminal of the sensing thin film transistor;
Cutting a connection pattern connecting a driving voltage and a drain terminal of the driving thin film transistor;
And electrically connecting the anode and the cathode of the organic light emitting diode to the cathode of the organic light emitting diode.

Images