CN112676697B - Laser repair optical system and laser repair equipment of display panel - Google Patents
Laser repair optical system and laser repair equipment of display panel Download PDFInfo
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- CN112676697B CN112676697B CN202011627058.0A CN202011627058A CN112676697B CN 112676697 B CN112676697 B CN 112676697B CN 202011627058 A CN202011627058 A CN 202011627058A CN 112676697 B CN112676697 B CN 112676697B
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Abstract
The invention discloses a laser repair optical system and a laser repair device of a display panel, wherein the optical system comprises a laser emitting module, an energy adjusting module, an illuminating module and an imaging module; the energy adjusting module at least comprises a first energy adjusting unit and a second energy adjusting unit; a display beam of the display panel sequentially passes through the second energy adjusting unit and the first energy adjusting unit and then is incident to the imaging module, and the imaging module is used for determining pixels to be repaired in the display panel; the laser emitting module is used for emitting a repairing light beam according to the pixel to be repaired, the repairing light beam sequentially passes through the first energy adjusting unit and the second energy adjusting unit and then is incident to the display panel, and the laser emitting module is used for repairing the pixel to be repaired; the lighting module is used for emitting lighting beams, and the lighting beams are used for providing lighting in the pixel repairing process to be repaired. The technical problems of low energy utilization rate and poor camera imaging quality caused by serious light energy attenuation in the existing panel dead pixel repairing equipment are solved.
Description
Technical Field
The embodiment of the invention relates to the technical field of laser processing, in particular to a laser repair optical system and laser repair equipment of a display panel.
Background
The light path design of the display panel dead pixel repairing equipment in the market has large light energy loss, so that the energy attenuation in the light path of the repairing equipment is serious, the imaging quality of a camera is poor, and the repairing precision and the repairing efficiency of the display panel are influenced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a laser repair optical system and a laser repair device for a display panel, so as to solve the technical problems that the repair accuracy and repair efficiency of the display panel are affected by low energy utilization rate, poor camera imaging quality, and the like caused by severe optical energy attenuation in the conventional defective pixel repair device for the display panel.
In a first aspect, an embodiment of the present invention provides a laser repair optical system for a display panel, including a laser emitting module, an energy adjusting module, an illuminating module, and an imaging module; the energy adjusting module at least comprises a first energy adjusting unit and a second energy adjusting unit;
a display beam of the display panel sequentially passes through the second energy adjusting unit and the first energy adjusting unit and then is incident to the imaging module, and the imaging module is used for imaging according to the display beam and determining pixels to be repaired in the display panel;
the laser emitting module is electrically connected with the imaging module and used for emitting a repairing light beam according to the pixel to be repaired, and the repairing light beam sequentially passes through the first energy adjusting unit and the second energy adjusting unit and then is incident to the display panel and used for repairing the pixel to be repaired; wherein the repair beam comprises visible light and non-visible light, the first energy adjustment unit has a first inverse transmittance ratio for the visible light, the first energy adjustment unit has a second inverse transmittance ratio for the non-visible light, and the first inverse transmittance ratio is different from the second inverse transmittance ratio; the second energy adjusting unit has a third inverse transmittance ratio for the visible light, the second energy adjusting unit has a fourth inverse transmittance ratio for the non-visible light, and the third inverse transmittance ratio is different from the fourth inverse transmittance ratio; the transmittance inverse ratio is the ratio between the transmittance and the reflectivity of the light beam;
the illumination module is used for emitting an illumination light beam, the illumination light beam enters the display panel at least after passing through the second energy adjusting unit, and the illumination light beam is used for providing illumination in the pixel repairing process.
Optionally, the energy adjustment module includes a first energy adjustment unit and a second energy adjustment unit;
the first inverse trans-transmittance ratio is 1: 1;
the second inverse trans-ratio is 1: 0;
the third inverse transmittance ratio is 1: 1;
the fourth inverse ratio is 1: 0.
Optionally, the laser emitting module includes a first laser emitting unit, and the first laser emitting unit is configured to emit a first repair beam according to the pixel to be repaired;
the energy adjusting module further comprises a third energy adjusting unit; the third energy adjusting unit has a fifth inverse transmittance ratio for the visible light;
the display light beam sequentially passes through the second energy adjusting unit, the first energy adjusting unit and the third energy adjusting unit and then enters the imaging module;
the first repairing light beam sequentially passes through the first energy adjusting unit and the second energy adjusting unit and then is incident to the display panel;
the illumination light beams sequentially pass through the third energy adjusting unit, the first energy adjusting unit and the second energy adjusting unit and then are incident to the display panel.
Optionally, the first inverse transmittance ratio is 1: 1;
the second inverse transmission ratio is 0: 1;
the third inverse transmittance ratio is 1: 1;
the fourth inverse transmittance ratio is 1: 0;
the fifth inverse ratio is 1: 1.
Optionally, the laser emitting module further includes a second laser emitting unit, where the second laser emitting unit is configured to emit a second repair beam according to the pixel to be repaired;
and the second repairing light beam enters the display panel after passing through the second energy adjusting unit.
Optionally, the first inverse transmittance ratio is 1: 1;
the second inverse transmission ratio is 0: 1;
the third inverse transmittance ratio is 1: 1;
the fourth inverse transmittance ratio is 1: 0; or, the fourth inverse transmittance ratio is 0: 1;
the fifth inverse ratio is 1: 1;
optionally, the energy adjustment apparatus further includes a fourth energy adjustment unit;
the display light beam sequentially passes through the second energy adjusting unit, the first energy adjusting unit, the third energy adjusting unit and the fourth energy adjusting unit and then is incident to the imaging module;
the fourth energy adjusting unit has a sixth transmittance inverse ratio to the visible light, wherein the sixth transmittance inverse ratio is 0: 1; the fourth energy adjustment unit has a 7 th inverse transmission ratio to the invisible light, and the 7 th inverse transmission ratio is 1: 0.
Optionally, the laser repair optical system further includes an objective lens;
the display light beam enters the second energy adjusting unit after passing through the objective lens;
the repairing light beam is incident to the display panel after passing through the objective lens;
the illumination light beam enters the display panel after passing through the objective lens.
Optionally, the objective lens includes a 2-time objective lens, a 5-time objective lens, a 10-time objective lens, a 20-time objective lens, or a 50-time objective lens.
Optionally, the imaging module includes a CCD camera.
In a second aspect, an embodiment of the present invention provides a laser repair apparatus, including the laser repair optical system for a display panel provided in the first aspect, the laser repair apparatus further including a machining platform; the machining platform is used for bearing the display panel.
The laser repair optical system of the display panel provided by the embodiment of the invention comprises a laser emitting module, an energy adjusting module, an illuminating module and an imaging module; the energy adjusting module at least comprises a first energy adjusting unit and a second energy adjusting unit; the display light beam of the display panel sequentially passes through the second energy adjusting unit and the first energy adjusting unit and then enters the imaging module, and the imaging module is used for imaging according to the display light beam and determining pixels to be repaired in the display panel; the laser emitting module is electrically connected with the imaging module and used for emitting a repairing light beam according to the pixel to be repaired, and the repairing light beam sequentially passes through the first energy adjusting unit and the second energy adjusting unit and then is incident to the display panel and used for repairing the pixel to be repaired; the first energy adjusting unit has a first transmission inverse ratio to the visible light, the first energy adjusting unit has a second transmission inverse ratio to the non-visible light, and the first transmission inverse ratio and the second transmission inverse ratio are different; the second energy adjusting unit has a third transmittance inverse ratio for visible light, the second energy adjusting unit has a fourth transmittance inverse ratio for non-visible light, and the third transmittance inverse ratio and the fourth transmittance inverse ratio are different; the transmittance inverse ratio is the ratio between the transmittance and the reflectivity of the light beam; the illumination module is used for emitting an illumination light beam, the illumination light beam enters the display panel after passing through at least the second energy adjusting unit, and the illumination light beam is used for providing illumination in the pixel repairing process to be repaired. The energy utilization rate and the camera imaging quality of the laser repairing optical system are improved by reasonably setting the transmission inverse ratio of the first energy adjusting unit and the second energy adjusting unit to visible light and non-visible light, so that the defective pixel repairing precision and the defective pixel repairing efficiency of the display panel are improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings;
fig. 1 is a schematic structural diagram of a laser repair optical system of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an optical path of the laser repair optical system of the display panel aa in FIG. 1;
FIG. 3 is another schematic optical path diagram of the laser repair optical system of the display panel in aa of FIG. 1;
FIG. 4 is a schematic structural diagram of a laser repair optical system of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an optical path of the laser repair optical system for the display panel bb in FIG. 4;
fig. 6 is another optical path diagram of the laser repair optical system of the display panel in bb in fig. 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Examples
The embodiment of the invention provides a laser repairing optical system of a display panel. Fig. 1 is a schematic structural diagram of a laser repair optical system of a display panel according to an embodiment of the present invention; FIG. 2 is a schematic diagram of an optical path of the laser repair optical system of the display panel aa in FIG. 1. As shown in fig. 1 and 2, the laser repair optical system of the display panel includes; the device comprises a laser emitting module 1, an energy adjusting module 2, an illuminating module 3 and an imaging module 4; the energy adjusting module 2 comprises at least a first energy adjusting unit 21 and a second energy adjusting unit 22; a display beam A of the display panel 5 sequentially passes through the second energy adjusting unit 22 and the first energy adjusting unit 21 and then is incident to the imaging module 4, and the imaging module 4 is used for imaging according to the display beam A and determining pixels to be repaired in the display panel 5;
the laser emitting module 1 is electrically connected with the imaging module 4, and is used for emitting a repair beam B according to the pixel to be repaired, the repair beam sequentially passes through the first energy adjusting unit 21 and the second energy adjusting unit 22 and then enters the display panel 5, and the repair beam is used for repairing the pixel to be repaired;
the repair beam B includes visible light and invisible light, and the first energy adjustment unit 21 has a first inverse transmittance ratio T/R for the visible light 1 The first energy adjusting unit 21 has a second inverse transmittance ratio T/R for the invisible light 2 First inverse transmission ratio T/R 1 Inverse ratio of second transmittance to T/R 2 Different; the second energy adjusting unit 22 has a third inverse transmittance ratio T/R for visible light 3 The second energy adjusting unit 22 has a fourth inverse transmittance ratio T/R for the invisible light 4 Third inverse transmittance ratio T/R 3 Inverse ratio of T/R to fourth transmittance 4 Different; the transmission inverse ratio T/R is the ratio of the light beam transmission rate T and the reflection rate R;
the illumination module 3 is configured to emit an illumination light beam, and the illumination light beam enters the display panel 4 through at least the second energy adjustment unit 22 and is configured to provide illumination in the pixel repairing process to be repaired.
Illustratively, as shown in fig. 1, the laser repair optical system of the display panel includes a laser emitting module 1, an energy adjusting module 2, an illuminating module 3 and an imaging module 4, the energy adjusting module 2 is configured to include at least a first energy adjusting unit 21 and a second energy adjusting unit 22, and the first energy adjusting unit 21 and the second energy adjusting unit 22 may be filters having transmittance and reflectance of a specific wavelength. The display panel 5 with the dead pixel emits a display beam a which sequentially passes through the second energy adjusting unit 22 and the first energy adjusting unit 21 and then enters the imaging module 4, wherein the display beam a comprises a visible light wave band, the imaging module 4 comprises a visible light imaging CCD camera, the imaging module 4 performs imaging of the display panel according to the incident display beam a, and then determines a pixel to be repaired in the display panel 5, and further performs dead pixel repair on the pixel to be repaired.
The laser emitting module 1 is electrically connected with the imaging module 4 (not shown in the figure), according to the parameters such as the imaging position and the number of pixels to be repaired of the display panel by the imaging module 4, the laser emitting module 1 emits a repair beam B to repair the pixels to be repaired, wherein the laser emitting module 1 comprises a nano laser or a picosecond laser, the repair beam B comprises a visible light waveband and a non-visible light waveband, the non-visible light comprises an ultraviolet light waveband and an infrared light waveband, and the repair beam B is incident to the display panel 5 after sequentially passing through the first energy adjusting unit 21 and the second energy adjusting unit 22 to repair the dead pixel. In the repairing of the dead pixel of the display panel, the wavelength range of the repairing beam B is usually selected to be different according to the difference of the dead pixel, for example, laser beams in an ultraviolet band and an infrared band are selected to perform the repairing of the dead pixel.
Further, as shown in fig. 2, the ratio between the transmittance T and the reflectance R of the visible light by the first energy adjusting unit 21 is set to satisfy the first inverse transmittance ratio T/R 1 The ratio of the transmittance T and the reflectance R of the first energy adjusting unit 21 to the invisible light satisfies the second inverse transmittance T/R 2 And setting a first inverse transmittance ratio T/R 1 Inverse ratio of second transmittance to T/R 2 According to the difference of the display panel dead pixel, the reasonable utilization of visible light or invisible light can be realized; accordingly, the ratio of the transmittance T and the reflectance R of the visible light by the second energy adjusting unit 22 is set to satisfy the third inverse transmittance ratio T/R 3 The ratio of the transmittance T and the reflectance R of the non-visible light by the second energy adjusting unit 22 satisfies the fourth inverse transmittance ratio T/R 4 Third inverse transmission ratio T/R 3 T/R inverse ratio of fourth transmittance 4 Different. Through the reasonable inverse ratio that sets up, on the one hand, make restoration light beam B when the panel is restoreed, display panel 5's display beam A incides to imaging module 4 after second energy adjusting unit 22 and first energy adjusting unit 21 in proper order and obtains clear formation of image, and then all demonstration bad spots are found to accurate clarity, improve the bad spot detection yield, on the other hand, reduce the energy attenuation of restoration light beam B through energy adjusting module 2, effectively improve energy utilization, display panel bad spot restoration's efficiency and precision have been improved, realize restoration light beam B and display beam A optimal ratio.
Considering both the imaging quality of the imaging module 4 and the energy of the repair beam B, further, setting an illumination beam C emitted from the illumination module 3, where the illumination beam C includes a visible light band, and the illumination beam C enters the display panel 4 after passing through at least the second energy adjustment unit 22, as shown in fig. 2, an angle between an incident optical axis direction of the illumination beam C and a normal of a reflection surface of the second energy adjustment unit 22 may be 45 degrees, and a transmission inverse ratio T/R to visible light passing through the second energy adjustment unit 22 may be T/R 3 The optimal reflection of the illumination light beam C to the display panel 5 is realized, and illumination is provided in the process of repairing the pixel to be repaired.
In summary, the laser repair optical system of the display panel provided by the embodiment of the invention is provided with the laser emitting module, the energy adjusting module, the illuminating module and the imaging module; the energy adjusting module at least comprises a first energy adjusting unit and a second energy adjusting unit; the display light beam of the display panel sequentially passes through the second energy adjusting unit and the first energy adjusting unit and then enters the imaging module, and the imaging module is used for imaging according to the display light beam and determining pixels to be repaired in the display panel; the laser emitting module is electrically connected with the imaging module and used for emitting a repairing light beam according to the pixel to be repaired, and the repairing light beam sequentially passes through the first energy adjusting unit and the second energy adjusting unit and then is incident to the display panel and used for repairing the pixel to be repaired; the first energy adjusting unit has a first transmission inverse ratio to the visible light, the first energy adjusting unit has a second transmission inverse ratio to the non-visible light, and the first transmission inverse ratio and the second transmission inverse ratio are different; the second energy adjusting unit has a third transmittance inverse ratio for visible light, the second energy adjusting unit has a fourth transmittance inverse ratio for non-visible light, and the third transmittance inverse ratio and the fourth transmittance inverse ratio are different; the transmittance inverse ratio is the ratio between the transmittance and the reflectivity of the light beam; the illumination module is used for emitting an illumination light beam, the illumination light beam enters the display panel after passing through at least the second energy adjusting unit, and the illumination light beam is used for providing illumination in the pixel repairing process to be repaired. The energy utilization rate and the camera imaging quality of the laser repairing optical system are improved by reasonably setting the transmission inverse ratio of the first energy adjusting unit and the second energy adjusting unit to visible light and non-visible light, so that the defective pixel repairing precision and the defective pixel repairing efficiency of the display panel are improved.
FIG. 3 is another schematic optical path diagram of the laser repair optical system of the display panel in aa of FIG. 1. As shown in fig. 1, 2 and 3, optionally, the energy adjustment module 2 includes a first energy adjustment unit 21 and a second energy adjustment unit 22; first inverse transmission ratio T/R 1 1: 1; second inverse transmission ratio T/R 2 Is 1: 0; third inverse transmittance ratio T/R 3 1: 1; fourth inverse transmittance ratio T/R 4 Is 1: 0.
Specifically, referring to fig. 1, fig. 2 and fig. 3, the energy adjustment module 2 including the first energy adjustment unit 21 and the second energy adjustment unit 22 will be described as an example. Setting the first inverse transmission ratio T/R 1 1:1, that is, the ratio of the transmittance T and the reflectance R of the visible light by the first energy adjusting unit 21 satisfies 1:1, and the second inverse transmittance ratio T/R 2 Is 1:0, namely, the ratio of the transmittance T and the reflectance R of the first energy adjusting unit 21 to the invisible light satisfies 1:0, and the third inverse transmittance T/R 3 The ratio of the transmittance T to the reflectance R of the visible light by the second energy adjusting unit 22 is set to 1:1, and the ratio of the transmittance T to the reflectance R of the invisible light by the second energy adjusting unit 22 is set to 1: 0. Referring to fig. 3, taking an example that the repair beam B emitted from the laser emitting module 1 includes Visible light (Visible), ultraviolet light (NUV), and infrared light (IR), the repair beam B satisfies 100% power output, and satisfies B: laser (100%) of IR/Visible/NUV, and display light emitted from the display panel 5Beam A contains Visible light (Visible), shows that beam A satisfies 100% power output, satisfies A: visual ═ 100%, the lighting module 3 emits a lighting beam C containing Visible light (visual), the lighting beam C satisfies 100% power output, satisfies C: and Ref, Visable is 100%. When the repair beam B passes through the first energy adjustment unit 21 and the second energy adjustment unit 22 in sequence to reach the display panel 5, the repair beam B satisfies B; the IR/NUV is 100% and the Visible is 25%, wherein ultraviolet light (NUV) and infrared light (IR) are completely transmitted to the display panel 5, Visible light in the repair beam B is attenuated twice through the first energy adjusting unit 21 and the second energy adjusting unit 22, the passed energy attenuation controls the wavelength and the reasonable configuration of the energy actually acted on the pixel to be repaired by the repair beam B, and the requirements of repairing different dead spots are met. Further, the illumination light beam C reaches the display panel 5 through the second energy adjustment unit 22, and at this time, the illumination light beam C satisfies C: ref; visable is 50%, satisfies display panel 5's illumination requirement when bad point is restoreed, simultaneously, shows that light beam A passes through second energy adjusting unit 22 and first energy adjusting unit 21 back in proper order, is used for the display beam A of formation of image camera this moment, satisfies A: visual is 25%, and in practice, the light beams of the Image, the reflection, and the Laser passing through the second energy adjusting unit 22 completely overlap. Through the design of the light beam structure, the energy utilization rate of laser in an optical wave band is 25%, the energy utilization rate of laser in a deep ultraviolet wave band and an infrared wave band is 100%, the visible light energy utilization rate for camera imaging is 25%, actual restoration display shows that the laser and image quality is optimal, and the requirements of accurate and efficient restoration of dead pixel of a display panel are met.
Based on the above embodiment, with continued reference to fig. 1, the laser repair optical system further includes an objective lens 6; the display beam a passes through the objective lens 6 and then enters the second energy adjustment unit 22; the repairing light beam B enters the display panel 5 after passing through the objective lens 6; the illumination light beam C passes through the objective lens and enters the display panel 5.
Illustratively, with reference to fig. 1, in laser repair, generally, a dead pixel of the display panel 5 is very small, a common imaging device is difficult to clearly shoot, and a spot of a laser repair beam B is directly large, by matching an objective lens 6 with multiple magnifications at the front end of a laser repair optical system, by automatically or manually adjusting the objective lens 6 with different magnifications, specifically, by combining a low-power objective lens and an imaging module 4, an image of the imaging module 4 is clearer, the position and the number of pixels to be repaired can be accurately confirmed, and then switching is performed to a high-power objective lens, the high-power objective lens has a function of focusing the spot on the repair beam B, so as to reduce the spot size of the repair beam B, thereby improving the repair accuracy of the pixels to be repaired.
Alternatively, the objective lens 6 includes a 2-time objective lens, a 5-time objective lens, a 10-time objective lens, a 20-time objective lens, or a 50-time objective lens. Specifically, according to parameters such as the size and the position of a dead pixel of the display panel, a 2-time objective lens, a 5-time objective lens and a 10-time objective lens can be selected as a low-power objective lens for observation, and then the low-power objective lens is switched to a 20-time objective lens or a 50-time objective lens for repair.
As a possible way, fig. 4 is a schematic structural diagram of another laser repairing optical system of a display panel according to an embodiment of the present invention; FIG. 5 is a schematic diagram of an optical path of a laser repair optical system for a display panel bb in FIG. 4; fig. 6 is another optical path diagram of the laser repair optical system of the display panel in bb in fig. 4. As shown in fig. 4, 5 and 6, the laser emitting module 1 includes a first laser emitting unit 11, where the first laser emitting unit 11 is configured to emit a first repair beam B1 according to a pixel to be repaired;
the energy regulation module 2 further comprises a third energy regulation unit 23; the third energy adjusting unit 23 has a fifth inverse transmittance ratio T/R for visible light 5 (ii) a The display light beam a sequentially passes through the second energy adjusting unit 22, the first energy adjusting unit 21 and the third energy adjusting unit 23 and then enters the imaging module 4;
the first repair beam B1 sequentially passes through the first energy adjustment unit 21 and the second energy adjustment unit 22 and then enters the display panel 5;
the illumination light beam C sequentially passes through the third energy adjustment unit 23, the first energy adjustment unit 21, and the second energy adjustment unit 22, and then enters the display panel 5.
Illustratively, the laser emitting module 1 includes a first laser emitting moduleA light emitting unit 11, wherein the first laser light emitting unit 11 is configured to emit a first repair light beam B1 according to a pixel to be repaired in the display panel 5, the first repair light beam B1 includes visible light and invisible light, further, in consideration of design and construction of a light path in actual repair, the energy adjustment module 2 further includes a third energy adjustment unit 23, and a ratio of transmittance and reflectance of the third energy adjustment unit 23 to the visible light satisfies a specific fifth inverse transmittance ratio T/R 5 On the basis of the above embodiment, optionally, the first inverse transmittance ratio is 1: 1; the second inverse transmission ratio is 0: 1; the third inverse ratio is 1: 1; the fourth inverse ratio is 1: 0; the fifth inverse ratio is 1: 1. Illustratively, the fifth transmittance inverse ratio is 1:1, that is, the ratio of the transmittance and the reflectance of the visible light by the third energy adjusting unit 23 satisfies 1: 1.
Specifically, as shown in fig. 6, taking the example that the first repairing light beam B1 emitted by the first laser emitting unit 11 includes Visible light (Visible), ultraviolet light (NUV) and infrared light (IR), the first repairing light beam B1 satisfies 100% power output, and satisfies B1: IR/Visible/NUV equals 100%, the display beam a emitted from the display panel 5 contains Visible light (Visible), the display beam a satisfies 100% power output, and satisfies a: visual ═ 100%, the lighting module 3 emits a lighting beam C containing Visible light (visual), the lighting beam C satisfies 100% power output, satisfies C: and Ref, Visable is 100%. The first repairing light beam B1 sequentially passes through the first energy adjusting unit 21 and the second energy adjusting unit 22 to reach the display panel 5, and at this time, the first repairing light beam B1 satisfies B1: the IR/NUV is 100%, and the Visible is 25%, wherein ultraviolet light (NUV) and infrared light (IR) are completely transmitted to the display panel 5, the Visible light in the first repairing light beam B1 is attenuated on two sides, and the wavelength and energy of the first repairing light beam B1 actually acting on the pixel to be repaired are controlled by the energy attenuation of the first energy adjusting unit 21 and the second energy adjusting unit 22, so as to meet the requirements of repairing different dead spots. Further, the illumination light beam C sequentially passes through the third energy adjustment unit 23, the first energy adjustment unit 21 and the second energy adjustment unit 22 and then enters the display panel 5, and at this time, the illumination light beam C satisfies C: ref; 12.5%, satisfy the lighting requirement of display panel 5 when the dead pixel is restoreed, simultaneously, display beam A gets into imaging module 4 after second energy adjustment unit 22, first energy adjustment unit 21 and third energy adjustment unit 23 in proper order, and display beam A for the imaging camera this moment satisfies A: visual is 12.5%, and in practice, the light beams of the Image, the reflection, and the Laser passing through the second energy adjusting unit 22 completely overlap.
By adopting the light path system, the energy utilization rate of the laser in the light wave band reaches 25%, the energy utilization rate of the laser in the ultraviolet and infrared wave bands reaches 100%, and the visible light energy utilization rate acquired by the imaging module reaches 12.5%, so that the energy of the repair light beam B actually acting on the display panel 5 and the energy of the display light beam A for imaging are effectively balanced, the quality of the obtained laser and the image is optimized under the condition of ensuring the energy of the repair light beam B, and the defective point repair yield is ensured.
As a possible way, continuing to refer to fig. 4, 5 and 6, the laser emitting module 1 further includes a second laser emitting unit 12, the second laser emitting unit 12 is configured to emit a second repair beam B2 according to the pixel to be repaired;
the second repair beam B3 passes through the second energy adjustment unit 21 and then enters the display panel 5.
Illustratively, with continuing reference to fig. 4, 5 and 6, in the repairing of the actual display panel 5, according to the defective pixel characteristics of the pixel to be repaired, the repairing light beam B with multiple wavelengths and multiple energies may be used simultaneously or alternatively, further, the laser emission module 1 is further configured to further include a second laser emission unit 12, as shown in fig. 4, the second laser emission unit 12 is configured to emit a second repairing light beam B2 (as shown by the dashed light beam in fig. 4 and 6) according to the pixel to be repaired, and the second repairing light beam B2 is configured to enter the display panel 5 after passing through the second energy adjusting unit 21, so as to perform defective pixel repairing.
Optionally, the first inverse trans-ratio is 1: 1; the second inverse ratio is 0: 1; the third inverse ratio is 1: 1; the fourth inverse ratio is 1: 0; alternatively, the fourth inverse ratio is 0: 1; the fifth inverse ratio is 1: 1;
illustratively, with continued reference to FIG. 6, by setting the fourth inverse transmittance ratio to 1: 0; alternatively, the fourth inverse ratio is 0: 1. When the first inverse transmission ratio is set to 1:1, the second inverse transmission ratio is set to 0:1, the third inverse transmission ratio is set to 1:1, the fourth inverse transmission ratio is set to 1:0, and the fifth inverse transmission ratio is set to 1:1, based on the above-mentioned exemplary description of the inverse transmission ratios, with reference to fig. 6, since the ratio of the transmittance and the reflectance of the second energy adjusting unit 21 to the Visible light is set to 1:1, and the ratio of the transmittance and the reflectance to the invisible light is set to 1:0, the second repair beam B3 emitted by the second laser emitting unit 12 is provided, wherein the second repair beam B2 contains Visible light (Visible), ultraviolet light (NUV), and infrared light (IR) as examples, the second repair beam B2 satisfies 100% power output, and satisfies B2: the IR/Visible/NUV of Laser is 100%, the second repairing beam B2 passes through the second energy adjusting unit 21 and then enters the display panel 5, at this time, the second repairing beam B2 satisfies B2, the IR/NUV of Laser is 0% Visible is 50%, further in combination with the first repairing beam B1, the first repairing beam B1 passes through the first energy adjusting unit 21 and the second energy adjusting unit 22 in sequence and reaches the display panel 5, at this time, the first repairing beam B1 satisfies B1: and IR/NUV is 100%, Visible is 25%, and the energy of the invisible light of the first repair light beam B1 can be ensured by inversely proportional setting, and on the other hand, the energy of the Visible light can be effectively controlled according to needs during the dead pixel repair, so that the comprehensive repair energy of the dead pixel of the display panel is comprehensively solved.
When the first inverse transmission ratio is set to 1:1, the second inverse transmission ratio is set to 0:1, the third inverse transmission ratio is set to 1:1, the fourth inverse transmission ratio is set to 0:1, and the fifth inverse transmission ratio is set to 1:1, based on the above-mentioned exemplary description of the inverse transmission ratios, with reference to fig. 6, since the ratio of the transmittance and the reflectance of the second energy adjusting unit 21 to the visible light is set to 1:1, and the ratio of the transmittance and the reflectance to the invisible light is set to 0:1, the second repair light beam B3 emitted by the second laser emitting unit 12 is incident to the display panel 5 after passing through the second energy adjusting unit 21, at this time, the second repair light beam B2 satisfies B2: and IR/NUV (100% Visible) is 50%, Visible light energy and invisible light energy of the second repairing light beam B2 are reasonably used, and the repairing efficiency of the repairing light beam B is effectively improved by further combining the first repairing light beam B1.
In the above-described embodimentsOn the basis, with continuing reference to fig. 4 and 5, optionally, the energy adjustment apparatus 2 further includes a fourth energy adjustment unit 24; the display light beam a sequentially passes through the second energy adjusting unit 22, the first energy adjusting unit 21, the third energy adjusting unit 23 and the fourth energy adjusting unit 24 and then enters the imaging module 4; the fourth energy adjusting unit 24 has a sixth inverse transmittance ratio T/R for visible light 6 The sixth inverse ratio is 0: 1; the fourth energy adjusting unit 24 has a 7 th transmission inverse ratio T/R for the invisible light 6 The 7 th inverse ratio is 1: 0.
Illustratively, with continuing reference to fig. 4 and 5, the energy adjusting apparatus 2 further includes a fourth energy adjusting unit 24, and the sixth inverse transmittance ratio T/R is set as the ratio of the transmittance and the reflectance of the visible light by the fourth energy adjusting unit 24 6 The ratio of the transmittance to the reflectance of the invisible light of the display beam A is set to be 7 th inverse transmittance ratio T/R, and the fourth energy adjusting unit 24 is set to be 1:0, namely the visible light of the display beam A is set to be completely reflected to enter the imaging module 4 6 The ratio of the invisible light in the repair beam B to the imaging module 4 is 1:0, the imaging effect can be effectively prevented from being influenced or the imaging module 4 is damaged, such as a camera, the fourth energy adjusting unit 24 is used, the image quality is highest, the camera is protected, the mechanical structure is optimized, and the imaging quality of the imaging module 4 is further guaranteed.
Based on the same inventive concept, the embodiment of the invention further provides laser repair equipment, which comprises the laser repair optical system of the display panel, and the laser repair equipment further comprises a machining platform; the machining platform is used for bearing the display panel.
The display panel is borne by the high-precision machining platform, and the display panel is effectively moved, so that the display panel is effectively matched with the laser repairing light beam, and the purpose of repairing the high-precision defective pixel is achieved.
In summary, the laser repair device provided by the embodiment of the invention can be used for repairing the defective pixel of the display panel, and the energy utilization rate and the camera imaging quality of the laser repair optical system are improved by reasonably setting the transmission inverse ratio of the energy adjustment module to visible light and non-visible light, so that the defective pixel repair precision and the defective pixel repair efficiency of the display panel are improved.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that the features of the various embodiments of the invention may be partially or fully coupled to each other or combined and may be capable of cooperating with each other in various ways and of being technically driven. Numerous variations, rearrangements, combinations, and substitutions will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. The laser repair optical system of the display panel is characterized by comprising a laser emitting module, an energy adjusting module, an illuminating module and an imaging module; the energy adjusting module at least comprises a first energy adjusting unit, a second energy adjusting unit and a third energy adjusting unit;
a display beam of the display panel sequentially passes through the second energy adjusting unit, the first energy adjusting unit and the third energy adjusting unit and then is incident to the imaging module, and the imaging module is used for imaging according to the display beam and determining pixels to be repaired in the display panel;
the laser emitting module is electrically connected with the imaging module and comprises a first laser emitting unit, and the first laser emitting unit is used for emitting a first repairing light beam according to the pixel to be repaired; the first repairing light beam sequentially passes through the first energy adjusting unit and the second energy adjusting unit and then is incident to the display panel and is used for repairing the pixel to be repaired; wherein the repair beam comprises visible light and non-visible light, the first energy adjustment unit has a first inverse transmittance ratio for the visible light, the first energy adjustment unit has a second inverse transmittance ratio for the non-visible light, and the first inverse transmittance ratio is different from the second inverse transmittance ratio; the second energy adjusting unit has a third inverse transmittance ratio for the visible light, the second energy adjusting unit has a fourth inverse transmittance ratio for the non-visible light, and the third inverse transmittance ratio is different from the fourth inverse transmittance ratio; the third energy adjusting unit has a fifth inverse transmittance ratio to the visible light;
the transmittance inverse ratio is the ratio between the transmittance and the reflectivity of the light beam; the first inverse trans-transmittance ratio is 1: 1; the second inverse transmission ratio is 0: 1; the third inverse transmittance ratio is 1: 1; the fourth inverse transmittance ratio is 1: 0; the fifth inverse ratio is 1: 1;
the illumination module is used for emitting an illumination beam, and the illumination beam sequentially passes through the third energy adjusting unit, the first energy adjusting unit and the second energy adjusting unit and then enters the display panel to provide illumination in the pixel repairing process to be repaired.
2. The laser repair optical system according to claim 1, wherein the laser emission module further includes a second laser emission unit configured to emit a second repair beam according to the pixel to be repaired;
and the second repairing light beam enters the display panel after passing through the second energy adjusting unit.
3. The laser repair optical system according to claim 2, wherein the energy adjustment apparatus further includes a fourth energy adjustment unit;
the display light beam sequentially passes through the second energy adjusting unit, the first energy adjusting unit, the third energy adjusting unit and the fourth energy adjusting unit and then is incident to the imaging module;
the fourth energy adjusting unit has a sixth transmittance inverse ratio to the visible light, wherein the sixth transmittance inverse ratio is 0: 1; the fourth energy adjustment unit has a 7 th inverse transmission ratio to the invisible light, and the 7 th inverse transmission ratio is 1: 0.
4. The laser repair optical system according to claim 1, further comprising an objective lens;
the display light beam enters the second energy adjusting unit after passing through the objective lens;
the repairing light beam is incident to the display panel after passing through the objective lens;
the illumination light beam enters the display panel after passing through the objective lens.
5. The laser repair optical system according to claim 4, wherein the objective lens includes a 2-time objective lens, a 5-time objective lens, a 10-time objective lens, a 20-time objective lens, or a 50-time objective lens.
6. The laser repair optical system according to claim 1, wherein the imaging module includes a CCD camera.
7. A laser repair apparatus comprising the laser repair optical system of the display panel according to any one of claims 1 to 6, the laser repair apparatus further comprising a machining stage;
the machining platform is used for bearing the display panel.
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| JP3604019B2 (en) * | 1994-12-12 | 2004-12-22 | ソニー株式会社 | Optical space transmission equipment |
| WO2001019146A1 (en) * | 1999-09-06 | 2001-03-15 | Siemens Aktiengesellschaft | Method for treating multiple-layer substrates |
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| CN103878496A (en) * | 2014-04-15 | 2014-06-25 | 北京理工大学 | Method for efficiently processing high-quality micro hole with large ratio of pit-depth to pit-diameter through femtosecond laser |
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