CN109738983B - Light guide plate, display device, method and equipment for repairing white spots of display device - Google Patents
Light guide plate, display device, method and equipment for repairing white spots of display device Download PDFInfo
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- 230000007246 mechanism Effects 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 35
- 239000004973 liquid crystal related substance Substances 0.000 claims description 34
- 210000000416 exudates and transudate Anatomy 0.000 claims description 30
- 230000008439 repair process Effects 0.000 abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000011347 resin Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
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- 229920005749 polyurethane resin Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
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Abstract
The invention discloses a light guide plate, a display device, a method and equipment for repairing white spots of the display device. The light guide plate comprises a light incident surface, a light emergent surface and a plurality of salient points arranged on the surface of the opposite side of the light emergent surface, wherein the salient points are arranged in a way that the volume of the salient points is reduced when the temperature of the salient points reaches 120-150 ℃. The method comprises the following steps: detecting the display area of the display device to determine the position of the white spot; and irradiating the salient points corresponding to the white spot positions by using light rays, so that the volumes of the salient points are reduced. The method is adopted to repair the white spots of the display device, the light guide plate does not need to be replaced, the white spots of the whole display device can be directly repaired, and the universality is higher; the white spot can be automatically repaired, the operation is convenient, and the repair period is short; the method can directly carry out white spot repair on the client, solve the white spot problem in time and reduce the factory return rate.
Description
Technical Field
The invention relates to the technical field of display, in particular to a light guide plate, a display device, a method and equipment for repairing white spots of the display device.
Background
Liquid crystal display devices are prone to various optical defects under some conditions, wherein white spots are one of the common and problematic defects. In the prior art, a common method for repairing white spots is to replace a light guide plate for a liquid crystal display device, but the method has many problems, for example, the brightness unevenness cannot be effectively repaired by replacing the light guide plate, and the specific position of the white spots needs to be determined before the light guide plate is replaced; the existing method for repairing the white spots has low repeatability; the period for replacing the light guide plate to repair the white spots is long, the operation convenience is poor, other defects can be caused after the light guide plate is disassembled, and the white spots cannot be solved at a client in time. Furthermore, there are many reasons for white spots, and it has not been possible to repair white spots by a streamlined and versatile repair method in the prior art.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a light guide plate, a display device, and a method and an apparatus for repairing white spots of the display device, so as to prevent the light guide plate from being replaced when the white spots are repaired.
In order to solve the above technical problem, an embodiment of the present invention provides a light guide plate, including a light incident surface and a light emitting surface, and further including a plurality of bumps disposed on a surface of an opposite side of the light emitting surface, where the bumps are configured such that when a temperature of the bumps reaches 120 ℃ to 150 ℃, a volume of the bumps is reduced.
Optionally, the material of the bumps comprises a water-based resin.
Optionally, the water-based resin comprises at least one of an aqueous polyurethane resin and an aqueous acrylic resin.
In order to solve the above technical problem, an embodiment of the present invention further provides a display device, including the light guide plate described above, and further including a liquid crystal display panel disposed on a light exit surface side of the light guide plate.
In order to solve the above technical problem, an embodiment of the present invention further provides a method for repairing white spots of a display device, where the display device includes a light guide plate and a liquid crystal display panel disposed on a light exit surface side of the light guide plate, and a surface on an opposite side of the light exit surface of the light guide plate is provided with a plurality of protruding points, the method includes:
detecting the display area of the display device to determine the position of the white spot;
and irradiating the salient points corresponding to the white spot positions by using light rays, so that the volumes of the salient points are reduced.
Optionally, the irradiating the convex points corresponding to the white spot positions with the light beams includes:
and irradiating the salient points corresponding to the white spot positions by adopting at least two beams of laser light, wherein the intersection points of the at least two beams of laser light are superposed with the salient points corresponding to the white spot positions.
Optionally, the frequency of the laser light is 50Hz to 70 Hz.
Optionally, the detecting the display area of the display device and determining the white spot position includes:
illuminating the display device;
and detecting the display area of the display device to obtain the ratio of the brightness of the detected position to the ambient brightness, determining the detected position as the white spot position when the ratio of the brightness of the detected position to the ambient brightness is greater than or equal to a first threshold, and otherwise, continuing to detect the next position.
Optionally, the detecting the display area of the display device includes:
and detecting the display area of the display device by adopting an image controller.
In order to solve the above technical problem, an embodiment of the present invention further provides an apparatus for repairing white spots of a display device, where the display device includes a light guide plate and a liquid crystal display panel disposed on a side of a light exit surface of the light guide plate, a plurality of convex points are disposed on a surface of the light exit surface of the light guide plate opposite to the light exit surface, the apparatus includes a base, a moving mechanism, a repairing device, and a controller,
the base station is used for bearing the display device;
the motion mechanism is electrically connected with the controller and is used for driving the repairing device to move above the base station under the control of the controller;
the repairing device comprises a detector and a light beam generator, the detector and the light beam generator are electrically connected with the controller, and the detector is driven by the moving mechanism to move above the base platform so as to detect the display area of the display device and determine the position of the white spot;
and a controller receiving the exudate position information from the detector and controlling the light beam generator to generate a light beam to irradiate the bumps corresponding to the exudate position.
Optionally, the detection path of the detector is perpendicular to the display area of the display device, the number of the light beam generators is at least two, the intersection point of the light beams generated by the at least two light beam generators is located on the detection path of the detector, the apparatus further includes a third movement mechanism electrically connected to the controller, the controller is further configured to control the third movement mechanism to drive the repairing device to move along a third direction according to the exudate position information, so that the intersection point coincides with the bump corresponding to the exudate position, and the third direction is parallel to the detection path of the detector.
When the intersection point is superposed with the convex point corresponding to the white spot position, the controller is also used for controlling the light beam generator to generate a light beam to irradiate the convex point corresponding to the white spot position.
Optionally, the detector detects the white spot position in real time when the light beam irradiates the salient point, and the controller is further configured to determine whether to control the light beam generator to be turned off according to detection information fed back by the detector.
Optionally, the detector comprises an image controller and the light beam generator is a laser generator.
The method and the equipment for repairing the white spots of the liquid crystal display device, provided by the embodiment of the invention, have the advantages that the specific reason and the position of the white spot formation do not need to be analyzed, the light guide plate does not need to be replaced, the white spots of the whole liquid crystal display device can be directly repaired, and the universality is higher; the method and the equipment can automatically repair the white spots, and have convenient operation and short repair period; the method can directly carry out white spot repair on the client, solve the white spot problem in time and reduce the factory return rate.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of a light guide plate according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display device according to a second embodiment of the present invention;
FIG. 3 is a schematic view illustrating a method for repairing white spots of a display device according to a third embodiment of the present invention;
FIG. 4 is a schematic structural view of an apparatus for repairing a white spot on a display device according to a fourth embodiment of the present invention;
FIG. 5 is a detailed structural diagram of the repair process;
FIG. 6 is a schematic view showing a bump reduction caused by light beam irradiation on the bump corresponding to the white spot position.
Description of reference numerals:
10-a light guide plate; 11-light incident surface; 12-a light-emitting surface;
13-bumps; 1-a controller; 2-a prosthetic device;
20, fixing blocks; 21-a detector; 211 — detection path;
22-a light beam generator; 3, gantry support; 4, a base station;
41 — a first direction; 42 — a second direction; 43-third direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
As is apparent to those skilled in the art, liquid crystal display devices are susceptible to various optical defects under certain conditions. White spots are one of the common and problematic disadvantages. The inventor of the present application has found that the white spot of the liquid crystal display device is mainly caused by the optical film being worn or interfered by the mechanical structure, and further the optical path being uneven. Therefore, the nature of white spots is that the local area emits too much light.
In order to solve the problem of excessive brightness in a local area of a display device, the embodiment of the invention provides the display device and a method for repairing a white spot of a liquid crystal display device. The display device comprises a light guide plate, wherein the light guide plate comprises a light incident surface and a light emergent surface, and further comprises a plurality of salient points arranged on the surface of the opposite side of the light emergent surface, and when the temperature of the salient points reaches high temperature, the volumes of the salient points are reduced. A method of repairing white spots of a liquid crystal display device, comprising: detecting the display area of the display device to determine the position of the white spot; and irradiating the salient points corresponding to the positions of the white spots by using light rays.
The technical contents of the present invention will be described in detail by specific embodiments.
The first embodiment:
fig. 1 is a schematic structural view of a light guide plate according to a first embodiment of the present invention. As shown in fig. 1, the light guide plate 10 includes a light incident surface 11 and a light emitting surface 12, and the light incident surface 11 is located on a side surface of the light guide plate. The light guide plate 10 further includes a plurality of bumps 13 disposed on an opposite side surface of the light emitting surface 12. Thus, the surface of the side where the bumps 13 are provided may serve as a reflective surface of the light guide plate. The bumps 13 are arranged such that when the temperature of the bumps 13 reaches a high temperature, the bumps 13 shrink in volume. The bump 13 has a stable structure and volume at normal temperature, and the volume of the bump 13 is reduced at high temperature. The high temperature range is 120-150 ℃.
In order to reduce the volume of the bumps 13 at high temperature, in the embodiment, the material of the bumps 13 includes ink. The bumps 13 are formed on the surface of the opposite side of the light emitting surface 12 by printing. The material of the ink comprises water-based resin. The water-based resin may include at least one of an aqueous urethane resin and an aqueous acrylic resin. At normal temperature, the water-based resin in the ink has a stable hydrated structure, so that the bumps 13 have a stable structure and volume. At high temperature, water molecules in the water-based resin volatilize and are removed, so that the volume of the bumps 13 is reduced. Since the material of the bumps 13 includes the water-based resin, when the volume of the bumps 13 is reduced, the bottom area and the height of the bumps 13 are reduced at the same time.
Second embodiment:
based on the inventive concept of the first embodiment, a second embodiment of the present invention provides a liquid crystal display device, and fig. 2 is a schematic structural diagram of the display device according to the second embodiment of the present invention. As shown in fig. 2, the lcd device includes the light guide plate 10 in the first embodiment, a light source disposed on the light incident surface 11 side, and an lcd panel disposed on the light emitting surface 12 side.
The display panel may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
The third embodiment:
a third embodiment of the present invention proposes a method of repairing a white spot of a display device. The display device comprises a light guide plate and a liquid crystal display panel arranged on one side of a light emergent surface of the light guide plate. A plurality of salient points are arranged on the surface of one side opposite to the light-emitting surface of the light guide plate. In this embodiment, the display device may be the display device in the above-described embodiment. Fig. 3 is a schematic view illustrating a method for repairing a white spot on a display device according to a third embodiment of the present invention, as shown in fig. 3, the method including:
detecting a display area of the liquid crystal display device to determine a white spot position;
and irradiating the salient points corresponding to the positions of the white spots by using light rays, so that the volumes of the salient points are reduced.
In the embodiment, the material of the bump comprises a water-based resin (the water-based resin can comprise at least one of a water-based polyurethane resin and a water-based acrylic resin), and the temperature of the bump can reach a high temperature of 120-150 ℃ by irradiating the bump corresponding to the white spot position with light. When the temperature of the salient points reaches high temperature, water molecules in the water-based resin can volatilize and separate from the salient points, so that the volume of the salient points is reduced.
It is easy to understand that, the light entering the light guide plate needs to be transmitted in the light guide plate, and the salient points on the light guide plate can reflect the light irradiated on the salient points from the light guide plate so as to prevent the light from being emitted out of the light guide plate, so that the light irradiated on the salient points returns to the light guide plate after being reflected by the salient points, and is finally emitted out of the light emitting surface of the light guide plate. After the volume of the salient points is reduced, light reflected by the salient points is reduced, so that the light output amount of the positions, corresponding to the salient points, on the light guide plate is reduced, the local light output of the salient points is prevented from being too large, and white spots corresponding to the salient points are eliminated.
In order to make the salient points corresponding to the white spots reach a high temperature of 120-150 ℃ under the irradiation of light, in the embodiment, at least two laser beams are adopted to irradiate the salient points corresponding to the white spots, and the intersection points of the at least two laser beams are positioned on the salient points corresponding to the white spots. In this embodiment, the frequency of the laser beam is 50Hz to 70Hz, the laser beam with this frequency has high energy, and when at least two laser beams irradiate the bump at the same time, the temperature of the bump can reach high temperature quickly.
The frequency of the laser light is 50 Hz-70 Hz, so that when the single laser light irradiates the position outside the salient points corresponding to the white spots, the single laser light does not affect the parts of the display device, and the quality of the display device is ensured.
Wherein, detecting the display area of the liquid crystal display device to determine the white spot position may include:
lighting up the liquid crystal display device;
detecting the display area of the liquid crystal display device according to the zigzag shape to obtain the ratio of the brightness of the detection position to the surrounding brightness, when the ratio of the brightness of the detection position to the surrounding brightness is larger than or equal to a first threshold value, determining the detection position as the white spot position, otherwise, continuing to detect the next position.
In one embodiment, an image controller (CCD) is used for detecting the display area of the liquid crystal display device, the CCD collects images of the detection position and the surrounding position of the detection position, and the brightness of the detection position is compared with the surrounding brightness to obtain the ratio of the brightness of the detection position to the surrounding brightness. The CCD can convert the light brightness into electric signal, so that the CCD is used to detect the display area of the LCD device, and the ratio of the brightness in the detected position to the peripheral brightness can be obtained fast and directly to raise the detection efficiency and accuracy.
The method for repairing the white spots of the liquid crystal display device provided by the embodiment of the invention does not need to analyze the specific reason and position of the white spot formation, does not need to replace the light guide plate, can directly repair the white spots of the whole liquid crystal display device, and has higher universality; the method can automatically repair the white spots, is convenient to operate and has short repair period; the method can directly carry out white spot repair on the client, solve the white spot problem in time and reduce the factory return rate.
The fourth embodiment:
fig. 4 is a schematic structural view of an apparatus for repairing a white spot of a display device according to a fourth embodiment of the present invention. The display device comprises a light guide plate and a liquid crystal display panel arranged on one side of a light emergent surface of the light guide plate. A plurality of salient points are arranged on the surface of one side opposite to the light-emitting surface of the light guide plate. In this embodiment, the display device may be the display device in the above-described embodiment. The apparatus for repairing the white spot of the display device can implement the method for repairing the white spot of the display device in the above embodiments.
Fig. 5 is a detailed structural diagram of the repair process. As shown in fig. 4, the apparatus includes a base 4, a prosthetic device 2, a movement mechanism, and a controller 1. The base 4 is used for carrying the liquid crystal display device, and the repairing device 2 is positioned above the base 4. The motion mechanism is electrically connected with the controller 1 and is used for driving the repairing device to move above the base platform 4 under the control of the controller 1. The repairing device comprises a detector and a light beam generator, and the detector and the light beam generator are electrically connected with the controller. The detector is used for moving above the base platform under the drive of the motion mechanism so as to detect the display area of the display device and determine the position of the white spot. The controller receives the exudate position information from the detector and controls the light beam generator to generate light to irradiate the salient points corresponding to the exudate position.
In the present embodiment, the movement mechanism includes a first movement mechanism and a second movement mechanism connected to the base 4. The first motion mechanism moves the prosthetic device 2 over the base platform 4 in a first direction 41, and the second motion mechanism moves the prosthetic device 2 over the base platform 4 in a second direction 42. The first direction 41 and the second direction 42 are perpendicular to each other. The first direction 41 and the second direction 42 are parallel to the carrying surface of the base 4.
In this embodiment, as shown in fig. 4, the first motion mechanism drives the gantry support 3 to move along the first direction 41, the repairing device 2 is connected to the gantry support 3 through the second motion mechanism, and the second motion mechanism drives the repairing device 2 to move along the second direction 42, so that the first motion mechanism and the second motion mechanism respectively drive the repairing device 2 to move along the first direction 41 and the second direction 42 above the base 4. The controller 1 is electrically connected with the first motion mechanism and the second motion mechanism, the controller 1 is used for controlling the first motion mechanism to drive the repairing device 2 to move along a first direction, and the controller 1 is also used for controlling the second motion mechanism to drive the repairing device 2 to move along a second direction.
As shown in fig. 5, the prosthetic device 2 includes a fixed block 20, and a detector 21 is provided on the fixed block 20. The detector 21 is electrically connected to the controller 1. After the liquid crystal display device 5 is set on the base 4, the liquid crystal display device 5 is turned on. The first movement mechanism and the second movement mechanism drive the restoration device 2 to move above the display area of the liquid crystal display device 5, and the detector 21 is driven by the first movement mechanism and the second movement mechanism to detect each position of the display area of the liquid crystal display device above the base platform 4 so as to determine the white spot position. It is easily understood that, during the movement of the repairing device 2 in the first direction and the second direction, the plane of the moving position of the repairing device 2 and the plane of the display area are parallel to each other.
In order to improve the white spot detection efficiency of the detector 21, the detector 21 may detect the display region in zigzag.
In the present embodiment, the detector 21 may include a CCD. When the detector 21 detects the display area, the detector acquires images of the detection position and the surrounding position thereof, and compares the brightness of the detection position with the brightness of the surrounding position to obtain the ratio of the brightness of the detection position to the surrounding brightness. When the ratio of the brightness of the detection position to the ambient brightness is greater than or equal to the first threshold, it is determined that the detection position is the exudate position, in fig. 5, the B-point position is the exudate position, otherwise, the detector continues to detect the next position.
When the exudate position is confirmed, in order to repair the exudate, as shown in fig. 5, the repair apparatus 2 further includes at least two beam generators 22 disposed on the fixed block 20. The light beam generator 22 may generate a light beam. As shown in fig. 5, the light beam generators 22 are disposed on the fixed block 20, and at least two light rays generated by at least two light beam generators 22 have an intersection point a. The light generated by each of the light beam generators 22 is irradiated to the intersection point a, and thus, when the light beam generators 22 are all turned on, the temperature at the intersection point a is increased to reach a high temperature.
In this embodiment, the light beam generator 22 may be a laser generator that generates a laser beam having a high energy that can quickly reach a high temperature at the intersection point a.
When repairing an exudate, the intersection point a at the required position coincides with the salient point corresponding to the exudate position, and therefore, the repairing apparatus of the embodiment of the present invention further includes a third motion mechanism, and the third motion mechanism is configured to drive the repairing device 2 to move above the base platform 4 along the third direction 43. The third motion mechanism is electrically connected with the controller 1, and the controller 1 is further used for controlling the third motion mechanism to drive the repair device 2 to move along the third direction. The third direction 43 is perpendicular to the plane of the display area of the display device.
After the detector 21 detects the exudate position, the detector 21 sends exudate position information to the controller 1, and the controller 1 controls the first motion mechanism, the second motion mechanism and the third motion mechanism to drive the repairing device 2 to move according to the exudate position information, so that the intersection point a coincides with the salient point corresponding to the exudate position.
FIG. 6 is a schematic view showing a bump reduction caused by light beam irradiation on the bump corresponding to the white spot position. When the intersection point a coincides with the convex point corresponding to the white spot position, the controller 1 controls the light beam generators 22 to generate light beams, and at least two light beams generated by at least two light beam generators 22 irradiate the convex point at the same time, so that the temperature of the convex point reaches high temperature, water molecules in the water-based resin in the convex point volatilize and are separated, the volume of the convex point is reduced, as shown in fig. 6, and the light emitting amount of the light guide plate at the convex point is reduced. When the detector 21 detects that the ratio of the brightness at the exudate position to the ambient brightness is less than the first threshold, the controller 1 turns off the light beam generator 22, completing exudate recovery at the position.
In the process of irradiating the salient points by the laser generated by the laser generator, because the intersection points A of the laser beams are superposed with the salient points corresponding to the white spot positions, and other positions are not the intersection points of the laser beams, the temperature of other positions cannot reach high temperature, namely, the laser beams cannot influence parts at positions other than the salient points.
In order to further improve the efficiency of white spot repair, as shown in fig. 5, the detection path 211 of the detector 21 is parallel to the third direction 43, i.e. the detection path of the detector 21 is perpendicular to the display area plane of the display device, and the intersection point a is located on the detection path of the detector 21. Therefore, after the detector 21 determines the exudate position B, the controller 1 only needs to control the third motion mechanism to drive the repairing device 2 to move in the third direction, so that the intersection point a can coincide with the salient point corresponding to the exudate position B. In fig. 5, the intersection a coincides with the salient point corresponding to the white spot position B. Moreover, in the white spot repairing process, the detector 21 can detect the white spot position B in real time, compare the brightness of the white spot position B with the ambient brightness, and when the ratio of the brightness of the white spot position B to the ambient brightness is smaller than the first threshold, the controller 1 controls the light beam generator to stop generating the light beam, thereby completing the white spot repairing.
In this embodiment, for example, the detector 21 is a CCD, and the detection path is a projection direction of the CCD.
In the present embodiment, the number of the light beam generators 21 is 4, as shown in fig. 5. The detector 21 is disposed on the fixed block 20 with a detection path of the detector 21 directed vertically downward. The two sides of the detector 21 are respectively and symmetrically provided with 2 light beam generators 22, and the intersection points a of the light beams generated by the 4 light beam generators 22 are located on the detection path of the detector 21.
The working principle of the equipment for repairing the white spots of the liquid crystal display device provided by the embodiment of the invention is as follows:
a liquid crystal display device 5 is set on a base 4, and the liquid crystal display device is turned on;
the controller 1 controls the first movement mechanism and the second movement mechanism to drive the restoration device 2 to move above the display area of the liquid crystal display device 5, the detector 21 detects each position of the display area, the detector 21 collects images of the detection position and the surrounding position of the detection position, the brightness of the detection position is compared with the brightness of the surrounding position, and the ratio of the brightness of the detection position to the surrounding brightness is obtained;
when the ratio of the brightness of the detection position to the ambient brightness is greater than or equal to a first threshold value, confirming that the detection position is the exudate position, and sending exudate position information to the controller 1, otherwise, the detector 21 continues to detect the next position;
the controller 1 controls the third motion mechanism to drive the repairing device 2 to move along the third direction according to the white spot position information so as to enable the intersection point A to coincide with the salient point corresponding to the white spot position;
the controller 1 starts the laser generators, 4 laser generators generate laser beams and irradiate the convex points corresponding to the white spot positions at the same time, so that the temperature of the convex points reaches high temperature, water molecules of water-based resin in the convex points volatilize and are separated, the volume of the convex points is reduced, and as shown in fig. 6, the light output quantity of the light guide plate at the convex points is reduced;
when the detector 21 detects that the ratio of the brightness of the exudate location to the ambient brightness is less than the first threshold, the controller 1 turns off the laser generator to complete exudate repair at the location.
The equipment for repairing the white spots of the liquid crystal display device provided by the embodiment of the invention does not need to analyze the specific reason and position of the white spot formation, does not need to replace a light guide plate, can directly repair the white spots of the whole liquid crystal display device, and has higher universality; the device can automatically repair the white spots, is convenient to operate and has short repair period; the method can directly carry out white spot repair on the client, solve the white spot problem in time and reduce the factory return rate.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for repairing white spots of a display device, wherein the display device comprises a light guide plate and a liquid crystal display panel arranged on one side of a light-emitting surface of the light guide plate, a plurality of salient points are arranged on the surface of the light guide plate on the side opposite to the light-emitting surface, and the salient points are arranged such that when the temperature of the salient points reaches 120-150 ℃, the volume of the salient points is reduced, the method comprising:
detecting the display area of the display device to determine the position of the white spot;
and irradiating the salient points corresponding to the white spot positions by using light rays so that the temperature of the salient points reaches 120-150 ℃, and the volume of the salient points is reduced.
2. The method of claim 1, wherein the irradiating the salient points corresponding to the exudate positions with light comprises:
and irradiating the salient points corresponding to the white spot positions by adopting at least two beams of laser light, wherein the intersection points of the at least two beams of laser light are superposed with the salient points corresponding to the white spot positions.
3. The method of claim 2, wherein the laser light has a frequency of 50Hz to 70 Hz.
4. The method according to claim 1, wherein the detecting the display area of the display device and determining the white spot position comprises:
illuminating the display device;
and detecting the display area of the display device to obtain the ratio of the brightness of the detected position to the ambient brightness, determining the detected position as the white spot position when the ratio of the brightness of the detected position to the ambient brightness is greater than or equal to a first threshold, and otherwise, continuing to detect the next position.
5. The method of claim 1, wherein the detecting the display area of the display device comprises:
and detecting the display area of the display device by adopting an image controller.
6. The equipment for repairing the white spots of the display device is characterized in that the display device comprises a light guide plate and a liquid crystal display panel arranged on one side of the light emitting surface of the light guide plate, a plurality of salient points are arranged on the surface of the opposite side of the light emitting surface of the light guide plate, the salient points are arranged in such a way that when the temperature of the salient points reaches 120-150 ℃, the volume of the salient points is reduced, the equipment comprises a base station, a movement mechanism, a repairing device and a controller,
the base station is used for bearing the display device;
the motion mechanism is electrically connected with the controller and is used for driving the repairing device to move above the base station under the control of the controller;
the repairing device comprises a detector and a light beam generator, the detector and the light beam generator are electrically connected with the controller, and the detector is driven by the moving mechanism to move above the base platform so as to detect the display area of the display device and determine the position of the white spot;
and a controller receiving the exudate position information from the detector and controlling the light beam generator to generate a light beam to irradiate the bumps corresponding to the exudate position so that the temperature of the bumps reaches 120-150 ℃, and the volume of the bumps is reduced.
7. The apparatus according to claim 6, wherein the detection path of the detector is perpendicular to the display area of the display device, the number of the light beam generators is at least two, the intersection points of the light beams generated by the at least two light beam generators are located on the detection path of the detector, the apparatus further comprises a third motion mechanism electrically connected to the controller, and the controller is further configured to control the third motion mechanism to drive the repairing device to move along a third direction according to the exudate position information so that the intersection points coincide with the salient points corresponding to the exudate positions, and the third direction is parallel to the detection path of the detector.
8. The apparatus of claim 7, wherein the controller is further configured to control the light beam generator to generate a light beam to illuminate the bump corresponding to the white spot location when the intersection coincides with the bump corresponding to the white spot location.
9. The apparatus of claim 8, wherein the detector detects the exudate position in real time when a light beam irradiates a bump, and the controller is further configured to determine whether to control the light beam generator to be turned off according to detection information fed back by the detector.
10. The apparatus of claim 6, wherein the detector comprises an image controller and the light beam generator is a laser generator.
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| CN110426873A (en) * | 2019-08-26 | 2019-11-08 | 深圳市全洲自动化设备有限公司 | A kind of LCD LCD panel test method |
| CN111947895A (en) * | 2020-08-03 | 2020-11-17 | 深圳回收宝科技有限公司 | Method for detecting white spot abnormality of display device and related device |
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