Laser light source components and bright spot defect repair equipment composed of them

Abstract

The present invention discloses a laser light source component and a bright spot defect repair device composed of the same. The laser light source component includes a laser emitting component, an attenuation device and a beam combining device arranged in sequence. The laser emitting component is used to emit multiple laser beams, and the wavelengths of the multiple laser beams are different from each other. The attenuation device is used to attenuate and / or filter the multiple laser beams; the beam combining device is used to combine the multiple laser beams processed by the attenuation device into one beam. The structure is simple. The laser emitting component emits multiple laser beams with different wavelengths, that is, the wavelength of each laser beam is consistent. The attenuation device then attenuates and selects the multiple laser beams, retains the laser beams with the required wavelength, and then the retained laser beams are combined into one beam by the beam combining device.

Description

Technical Field

[0001] The present invention belongs to the field of laser equipment, and in particular relates to a laser light source component for repairing bright spot defects of a flat panel display screen and a bright spot defect repairing device composed of the laser light source component. Background Art

[0002] In the production process of displays, different defects usually occur. Generally speaking, bright spot defects are easier to find and more serious than dark spot defects. As long as a bright spot appears on the display, the grade will be reduced. Therefore, the unqualified standard for determining the display is more stringent than the number of bright spot defects. At the same time, there are many reasons for bright spot defects, including residual, missing, and particle pollution. Therefore, it is extremely difficult to completely remove or repair bright spot defects. However, listing all products with bright spot defects as unqualified products will have a great impact on production costs. Therefore, we usually use laser repair technology to repair bright spot defects. At present, the bright spot repair methods of displays include laser cutting, laser welding, laser stripping, laser deposition, and laser sintering, so as to achieve dark spot or normalization repair. The laser wavelengths used in various repair methods are different. For example, in the cutting and welding method, the wavelength of the metal layer and the semiconductor layer is 532nm, and the wavelength of ITO is 1064nm. The suitable wavelength is 352nm in the deposition method, and the wavelength of 355nm is better in the stripping method. However, existing repair equipment usually only uses one or two wavelengths, and the repair method is single, which makes it impossible to classify and repair different types of bright spot defects, resulting in reduced repair efficiency. Summary of the invention

[0003] In order to solve the above technical problems, one of the objectives of the present invention is to provide a laser light source component with a simple structure, adjustable wavelength of the emitted laser and multiple functions.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a laser light source component, comprising a laser emitting component, an attenuation device and a beam combining device arranged in sequence, the laser emitting component is used to emit multiple laser beams, and the wavelengths of the multiple laser beams are different from each other, the attenuation device is used to attenuate and / or filter the multiple laser beams; the beam combining device is used to combine the multiple laser beams processed by the attenuation device into one beam.

[0005] Preferably, the laser emitting component in the above technical solution is composed of a plurality of first lasers, each of the first lasers emits a laser beam with a single wavelength, and the wavelengths of the laser beams emitted by the plurality of first lasers are different from each other.

[0006] Preferably, the laser emitting component includes at least one second laser and a beam splitting device, the second laser emits a laser beam composed of lasers of multiple wavelengths, and the beam splitting device is used to split each laser beam emitted by the second laser into multiple beams according to different wavelengths and send them into the attenuation device.

[0007] Wherein, the beam splitting device is composed of a plurality of beam splitting mirrors.

[0008] Further preferably, the laser emitting component further comprises at least one first laser, which emits a laser beam with a single wavelength and directly enters the attenuation device.

[0009] Wherein, the attenuation device comprises a plurality of attenuation units, and the plurality of attenuation units correspond one-to-one to the plurality of laser beams entering the attenuation device, and are respectively used to attenuate and / or filter the laser beams of the corresponding wavelength.

[0010] Preferably, the attenuation unit is an attenuator, a neutral density filter or a polarizer.

[0011] The beam combining device comprises a plurality of beam combining units, and the plurality of beam combining units correspond one-to-one to the plurality of laser beams entering the attenuation device, and are respectively used to combine the plurality of laser beams attenuated by the attenuation device into one beam.

[0012] Preferably, the beam combining unit is a beam combining mirror or a dichroic mirror.

[0013] The beneficial effects of the above technical solution are: its structure is simple, and the laser emitting component emits laser beams of multiple wavelengths, that is, the wavelength of each laser beam is consistent, and then the attenuation device attenuates and selects the multiple laser beams to retain the laser beams of the required wavelength, and then the retained laser beams are combined into one beam by the beam combining device.

[0014] The second object of the present invention is to provide a repair device with a simple structure and multiple functions, which can blacken or darken the bright spots on a flat panel display screen.

[0015] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a flat panel display screen bright spot defect repairing device, comprising an automatic focus adjustment component, a scanning component, an illumination light source component, a monitoring component, a control component and the laser light source component as described above, wherein the laser light source component, the automatic focus adjustment component, the scanning component, the illumination light source component and the monitoring component are arranged in sequence, and the laser light source component, the automatic focus adjustment component, the scanning component, the illumination light source component and the monitoring component are electrically connected to the control component respectively.

[0016] The beneficial effect of the above technical solution is that the device can adjust the wavelength of the laser it finally emits as needed, so that the entire device can meet multiple purposes, and different types of bright spot defects can be classified and repaired, achieving multiple uses of one machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural diagram of a laser light source component according to an embodiment of the present invention;

[0018] Figure 2 Another structural diagram of the laser light source component according to an embodiment of the present invention;

[0019] Figure 3 Another structural diagram of the laser light source component according to an embodiment of the present invention;

[0020] Figure 4 Another structural diagram of the laser light source component according to an embodiment of the present invention;

[0021] Figure 5 Another structural diagram of the laser light source component according to an embodiment of the present invention;

[0022] Figure 6 This is another structural diagram of the flat panel display screen bright spot defect repairing device described in an embodiment of the present invention.

[0023] In the figure: 1 laser light source component, 11 laser emitting component, 111 first laser, 112 second laser, 113 beam splitting device, 1131 first beam splitting device, 1132 second beam splitting device, 1133 third beam splitting device, 12 attenuation device, 121 first attenuator, 122 second attenuator, 123 third attenuator, 124 fourth attenuator, 13 beam combining device, 131 first beam combining mirror, 132 second beam combining mirror, 133 third beam combining mirror, 134 fourth beam combining mirror, 2 automatic focus adjustment component, 3 scanning component, 4 illumination light source component, 5 monitoring component, 6 control component. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1 As shown, this embodiment provides a laser light source component, including a laser emitting component 11, an attenuation device 12 and a beam combining device 13 which are arranged in sequence, wherein the laser emitting component 11 is used to emit a plurality of laser beams, and the wavelengths of the plurality of laser beams are different from each other, the attenuation device 12 is used to attenuate and / or filter the plurality of laser beams; the beam combining device 13 is used to combine the plurality of laser beams processed by the attenuation device 12 into one beam.

[0026] Preferably, Figure 2 As shown, the laser emitting component 11 in the above technical solution is composed of multiple first lasers 111, each of the first lasers 111 emits a laser beam with a single wavelength, and the wavelengths of the laser beams emitted by the multiple first lasers 111 are different from each other.

[0027] Preferably, Figure 3 As shown, the laser emitting component 11 includes at least one second laser 112 and a beam splitting device 113. The second laser 112 emits a laser beam composed of lasers of multiple wavelengths. The beam splitting device 113 is used to split each laser beam emitted by the second laser 112 into multiple beams according to different wavelengths and send them into the attenuation device 12.

[0028] Among them, specifically, Figure 4 As shown, the beam splitting device 113 is composed of a plurality of beam splitters, wherein, if there are n second lasers, wherein n is a positive integer, the n second lasers emit n laser beams in total, the n laser beams contain laser beams of m wavelengths in total, and m is a positive integer greater than 1, then the number of beam splitters is m. When the plurality of beam splitters are in operation, they are arranged in sequence, the laser beam emitted by the second laser 112 passes through the plurality of beam splitters in sequence, each beam splitter splits the corresponding laser beam out, and the remaining laser beam composed of multiple wavelengths enters the next beam splitter, and so on, each beam splitter splits the laser beam of the corresponding wavelength.

[0029] Further preferably, the laser emitting component 11 further includes at least one first laser 111 , which emits a laser beam with a single wavelength and directly enters the attenuation device 12 .

[0030] The attenuation device 12 includes a plurality of attenuation units, and the plurality of attenuation units correspond one-to-one to the plurality of laser beams entering the attenuation device 12, and are respectively used to attenuate and / or filter the laser beams of the corresponding wavelength.

[0031] Preferably, the attenuation unit is an attenuator, a neutral density filter or a polarizer.

[0032] The beam combining device 13 includes a plurality of beam combining units, and the plurality of beam combining units correspond one-to-one to the plurality of laser beams entering the attenuation device 12, and are respectively used to combine the plurality of laser beams attenuated by the attenuation device 12 into one beam.

[0033] Preferably, the beam combining unit is a beam combining mirror or a dichroic mirror.

[0034] Among them, its structure is simple, and the laser emitting component emits multiple laser beams with different wavelengths, that is, the wavelength of each laser beam is consistent, and then the attenuation device attenuates and selects the multiple laser beams, retaining the laser with the required wavelength, and then the retained laser is combined into one beam by the beam combining device.

[0035] Among them, Figure 5 As shown, a laser light source component is provided, wherein the laser emitting component 11 comprises a first laser 111, a second laser 112 and a beam splitting device 113, wherein the second laser 112 can simultaneously emit three wavelengths of laser light respectively marked as laser b, laser c and laser d, the first laser 111 can only emit one wavelength of laser light marked as laser a, the beam splitting device 113 is composed of a first beam splitter 1131, a second beam splitter 1132 and a third beam splitter 1133, and the first beam splitter 1131, the second beam splitter 1132 and the third beam splitter 1133 respectively split the three wavelengths of laser light emitted by the second laser 112 into three optical paths , wherein the attenuation device 12 is composed of four attenuators, namely the first attenuator 121, the second attenuator 122, the third attenuator 123 and the fourth attenuator 124, and the beam combining device is composed of four beam combining mirrors, namely the first beam combining mirror 131, the second beam combining mirror 132, the third beam combining mirror 133 and the fourth beam combining mirror 134, and the four laser beams enter the first attenuator 121, the second attenuator 122, the third attenuator 123 and the fourth attenuator 124 respectively, and the control component 7 controls the four attenuators to attenuate the corresponding laser beams to the required size respectively, and the first beam combining mirror 131, the second beam combining mirror 132, the third beam combining mirror 133 and the fourth beam combining mirror 134 combine all the laser beams. If only the second laser 112 is needed to emit laser b and laser c, the control component 7 controls the first laser 111 to turn off, and controls the fourth attenuator 124 to completely block the laser d, and the second attenuator 122 and the third attenuator 123 respectively attenuate the laser b and laser c to the required amount, and the output laser is combined and emitted by the second beam combining mirror 132 and the third beam combining mirror 133 in the beam combining device, wherein the first beam combining mirror 131 does not work, and the fourth beam combining mirror 134 only transmits the laser b and laser c completely.

[0036] Example 2

[0037] like Figure 6As shown, this embodiment provides a flat panel display screen bright spot defect repairing device, comprising a focus automatic adjustment component 2, a scanning component 3, an illumination light source component 4, a monitoring component 5, a control component 6 and a laser light source component 1 as described in Example 1, wherein the laser light source component 1, the focus automatic adjustment component 2, the scanning component 3, the illumination light source component 4 and the monitoring component 5 are arranged in sequence, and the laser light source component 1, the focus automatic adjustment component 2, the scanning component 3, the illumination light source component 4 and the monitoring component 5 are respectively electrically connected to the control component 6. The device can adjust the wavelength of the laser it finally emits as needed, so that the entire device can meet multiple purposes, and can classify and repair different types of bright spot defects, realizing one machine for multiple purposes, such as adjusting the wavelength of the laser to realize the processing method of laser cutting, laser welding, laser peeling, laser deposition or laser sintering of the bright spot of the flat panel display screen to blacken or darken the bright spot on the display screen.

[0038] The illumination light source component 4 provides an illumination light source for the monitoring component 5 for observing the surface defects of the display screen. The laser light source component 1 emits laser light, and after the focus automatic adjustment component 2 adjusts the parameters such as the laser spot size and energy distribution, and the scanning component 3 adjusts the scanning mode and scanning speed, it reaches the display screen to repair the bright spot defects. The control component 6 controls the wavelength and proportion of the emitted laser through the laser light source component 1, controls the size and energy distribution of the emitted laser through the focus automatic adjustment component 2, and then controls the scanning mode and speed through the scanning component 3. The switch and brightness of the illumination light source are controlled by the illumination light source component 4 to achieve the role of auxiliary monitoring. The monitoring component 5 adjusts the monitoring screen and determines the defect type, defect location, repair method and repair location on the display screen, thereby adjusting and controlling the parameters required by the laser light source component 1, the focus automatic adjustment component 2, and the scanning component 3. The repair method and location are controlled by the control component through the bright spot defects on the surface of the display screen, including laser cutting, laser welding, laser peeling, laser sintering, etc.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for repairing bright spot defects of a flat panel display, characterized in that: The invention comprises an automatic focus adjustment component (2), a scanning component (3), an illumination light source component (4), a monitoring component (5), a control component (6) and a laser light source component (1), wherein the laser light source component comprises a laser emitting component (11), an attenuation device (12) and a beam combining device (13) which are arranged in sequence, wherein the laser emitting component (11) is used to emit a plurality of laser beams, and the wavelengths of the plurality of laser beams are different from each other, the attenuation device (12) is used to attenuate and / or filter the plurality of laser beams; and the beam combining device (13) is used to combine the plurality of laser beams processed by the attenuation device (12) into one beam; The laser emitting component (11) comprises a first laser (111), a second laser (112) and a beam splitting device (113), wherein the second laser (112) simultaneously emits lasers of three wavelengths which are respectively marked as laser b, laser c and laser d, and the first laser (111) only emits lasers of one wavelength which are marked as laser a; the beam splitting device (113) comprises a first beam splitter (1131), a second beam splitter (1132) and a third beam splitter (1133), and the first beam splitter (1131), the second beam splitter (1132) and the third beam splitter (1133) respectively split the lasers of three wavelengths emitted by the second laser (112) into three optical paths; and the attenuation device (12) comprises four The invention relates to a laser beam combining device (13) comprising attenuators, namely a first attenuator (121), a second attenuator (122), a third attenuator (123) and a fourth attenuator (124); the beam combining device (13) comprises four beam combining mirrors, namely a first beam combining mirror (131), a second beam combining mirror (132), a third beam combining mirror (133) and a fourth beam combining mirror (134); and four laser beams enter the first attenuator (121), the second attenuator (122), the third attenuator (123) and the fourth attenuator (124) respectively. The four attenuators respectively attenuate the corresponding laser beams to a desired size, and the first beam combining mirror (131), the second beam combining mirror (132), the third beam combining mirror (133) and the fourth beam combining mirror (134) combine all the laser beams; The laser light source component (1), the focus automatic adjustment component (2), the scanning component (3), the illumination light source component (4) and the monitoring component (5) are arranged in sequence, and the laser light source component (1), the focus automatic adjustment component (2), the scanning component (3), the illumination light source component (4) and the monitoring component (5) are electrically connected to the control component (6) respectively.

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