CN109597247B - Display panel, backlight source and correcting device thereof - Google Patents
Display panel, backlight source and correcting device thereof Download PDFInfo
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- CN109597247B CN109597247B CN201910122019.6A CN201910122019A CN109597247B CN 109597247 B CN109597247 B CN 109597247B CN 201910122019 A CN201910122019 A CN 201910122019A CN 109597247 B CN109597247 B CN 109597247B
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- 238000001514 detection method Methods 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- -1 silver halide Chemical class 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 229910021612 Silver iodide Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
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- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
- 229940045105 silver iodide Drugs 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The disclosure provides a display panel, a backlight source and a backlight source correction device. The backlight source comprises a light guide plate and a light adjusting film. The light guide plate is provided with a light emergent surface. The light adjusting film is arranged opposite to the light emergent surface of the light guide plate, and the light adjusting film is made of photosensitive materials. The backlight source correcting device comprises a bearing table, an image acquisition assembly, an image processing assembly, a light emitting assembly, a moving mechanism and a control device. The bearing table is provided with a bearing surface for placing a backlight source. The image acquisition assembly, the image processing assembly and the control device can determine the position information of the bright spot in the backlight source, and the control device controls the moving mechanism to drive the light emitting assembly to move to the position corresponding to the bright spot on the backlight source according to the position information of the bright spot and controls the light emitting assembly to be opened so as to emit specified light. The luminous point can be eliminated, and the uniformity of light emission is improved.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a display panel, a backlight source and a backlight source correction device.
Background
With the rapid development of display technology, a Liquid Crystal Display (LCD) as a display device has become a mainstream in the field of flat panel display. Since the liquid crystal itself does not emit light, the LCD needs to realize display by a backlight.
In the assembly process of the backlight source, the backlight source is easy to be polluted, foreign matters appear, and therefore specified light is focused to form bright spots, and the uniformity of light emission is influenced. In order to eliminate the bright spots, the backlight source is often required to be disassembled, and the steps are complicated, so that the backlight source is easily subjected to secondary pollution.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
An object of the present disclosure is to provide a display panel and a backlight source, which can eliminate bright spots, improve the uniformity of light emission, and do not need to detach the backlight source.
Another object of the present disclosure is to provide a backlight correction device, which can eliminate bright spots on a backlight without disassembling the backlight, thereby improving uniformity of light emission.
According to one aspect of the present disclosure, there is provided a backlight comprising:
a light guide plate having a light emitting surface;
the light adjusting film is arranged opposite to the light emitting surface of the light guide plate, and the light adjusting film is made of a photosensitive material.
In an exemplary embodiment of the present disclosure, a material of the light adjusting film includes silver halide.
In one exemplary embodiment of the present disclosure, the thickness of the light adjusting film is 90 to 110 μm.
In an exemplary embodiment of the present disclosure, the backlight further includes:
and the prism assembly is arranged between the light adjusting film and the light guide plate.
According to an aspect of the present disclosure, there is provided a display panel including the backlight of any one of the above.
According to an aspect of the present disclosure, there is provided a backlight correction apparatus including:
the backlight source comprises a light guide plate and a light adjusting film, the light guide plate is provided with a light emitting surface, the light adjusting film is opposite to the light emitting surface of the light guide plate, and the light adjusting film is made of a photosensitive material;
the image acquisition assembly faces the bearing surface and is used for acquiring the image of the backlight source;
the image processing assembly is used for judging whether the image has a bright spot or not and generating position information of the bright spot in the image when the image has the bright spot;
the light emitting assembly is arranged opposite to the bearing surface and used for emitting specified light rays towards the bearing surface;
the moving mechanism is used for driving the light emitting component to move;
and the control device is used for determining the position information of the bright spot on the backlight source according to the position information of the bright spot in the image, controlling the moving mechanism to drive the light emitting assembly to move to the position corresponding to the bright spot on the backlight source according to the position information of the bright spot on the backlight source, controlling the light emitting assembly to be started, and keeping the preset duration to emit the specified light.
In an exemplary embodiment of the present disclosure, the backlight correction apparatus further includes:
position detection means for detecting position information of the light emitting element;
the control device is further used for judging whether the light emitting assembly moves to a position corresponding to a bright spot on the backlight source according to the position information of the light emitting assembly, and controlling the light emitting assembly to be started when the light emitting assembly moves to the position corresponding to the bright spot on the backlight source.
In an exemplary embodiment of the present disclosure, the material of the light adjusting film includes silver halide, and the light emitting member is capable of emitting ultraviolet rays.
In an exemplary embodiment of the present disclosure, the light emitting assembly can emit a designated light perpendicular to the bearing surface.
In an exemplary embodiment of the present disclosure, the preset time period is 10-20 s.
The display panel and the backlight source are provided with the light adjusting film which is opposite to the light emitting surface of the light guide plate. Because the material of membrane of adjusting luminance is photosensitive material, its luminousness can reduce under the illumination of appointed light to can shine through the bright spot to on the backlight, with the luminousness in the region corresponding to this bright spot on the reduction membrane of adjusting luminance, can eliminate the bright spot, improve luminous homogeneity, and need not to dismantle the backlight, avoid the backlight to receive secondary pollution.
The backlight source correcting device comprises a light guide plate, an image acquisition assembly, an image processing assembly, a light emitting assembly, a control device and a light emitting assembly, wherein the light guide plate is provided with a light modulation film; meanwhile, the bright spots on the backlight source do not need to be determined manually, and the working efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
FIG. 1 is a schematic view of a backlight of an embodiment of the disclosure;
FIG. 2 is a schematic view of a backlight of an embodiment of the disclosure being illuminated;
FIG. 3 is a schematic diagram of a backlight calibration apparatus according to an embodiment of the disclosure;
FIG. 4 is a block diagram of a backlight calibration apparatus according to an embodiment of the disclosure;
FIG. 5 is a schematic diagram of a backlight calibration apparatus according to an embodiment of the disclosure;
fig. 6 is a schematic diagram of an embodiment of a moving mechanism of a backlight calibration apparatus according to an embodiment of the disclosure;
fig. 7 is a schematic diagram of another embodiment of a moving mechanism of a backlight correction device according to an embodiment of the disclosure.
In the figure: 1. a light guide plate; 2. a light adjusting film; 3. a light-emitting surface; 4. a prism assembly; 5. a bearing table; 6. a bearing surface; 7. a backlight source; 8. an image acquisition component; 9. a light emitting assembly; 10. a support; 11. a moving mechanism; 12. an image processing component; 13. a first driving device; 14. a control device; 15. a position detection device; 16. a foreign matter; 17. specifying a ray; 18. a first guide rail; 19. a second guide rail; 20. a rotating shaft; 21. a track; 22. a second driving device.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, materials, devices, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. The terms "a" and "the" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
The disclosed embodiments provide a backlight. As shown in fig. 1 and 2, the backlight may include a light guide plate 1 and a light adjusting film 2, wherein:
the light guide plate 1 has a light emitting surface 3. The light adjusting film 2 is arranged opposite to the light emitting surface 3 of the light guide plate 1, and the light adjusting film 2 is made of a photosensitive material. Wherein the light transmittance of the photosensitive material is reduced under the irradiation of the prescribed light 17.
As shown in fig. 1 and 2, the backlight according to the embodiment of the present disclosure includes a light adjusting film 2 disposed opposite to a light emitting surface 3 of a light guide plate 1. Because the material of membrane 2 of adjusting luminance is photosensitive material, its luminousness can reduce under appointed light 17's the illumination to can shine through the bright spot on the backlight, with the luminousness in the region corresponding to this bright spot on reducing membrane 2 of adjusting luminance, can eliminate because the produced bright spot of foreign matter 16's spotlight effect has improved luminous homogeneity, and need not to dismantle the backlight, avoids the backlight to receive secondary pollution.
The following describes each part of the backlight according to the embodiment of the present disclosure in detail:
as shown in fig. 1, the light guide plate 1 may have a light emitting surface 3, and the light emitting surface 3 may emit a planar light. The light guide plate 1 may be a rectangular plate, but not limited thereto, and may be a circular plate. The material and size of the light guide plate 1 are not particularly limited in the embodiments of the present disclosure.
As shown in fig. 1, the light adjusting film 2 can be disposed opposite to the light emitting surface 3 of the light guide plate 1, that is, the light adjusting film 2 can be disposed parallel to the light emitting surface 3 of the light guide plate 1, so that the light emitted from the light emitting surface 3 can irradiate the light adjusting film 2. The light adjusting film 2 can cover the light guide plate 1. In other embodiments of the present disclosure, a prism assembly 4 is disposed between the light adjusting film 2 and the light guide plate 1, that is, the light adjusting film 2 is disposed on one side of the prism assembly 4 away from the light guide plate 1, so as to avoid affecting the transmission of light between the light guide plate 1 and the prism assembly 4. The thickness of the light adjusting film 2 may be 90 to 110 μm, for example, 90 μm, 92 μm, 93 μm, 96 μm, 98 μm, 100 μm, 104 μm, 110 μm, or the like.
As shown in fig. 1 and 2, the material of the light adjusting film 2 is a photosensitive material. The light transmittance of the photosensitive material is reduced under the irradiation of the designated light 17, so that the light spot on the backlight source can be irradiated to reduce the light transmittance of the area corresponding to the light spot on the light adjusting film 2, and the light spot can be eliminated. The photosensitive material may include silver halide, among others. The silver halide may be silver chloride, silver bromide, silver iodide, etc. The designated light 17 may be ultraviolet light, but is not limited thereto. The silver halide particles forming the light adjusting film 2 may be nanoparticles.
The embodiment of the disclosure also provides a display panel. The display panel may comprise a backlight as described in any of the above embodiments. Meanwhile, the display panel may further include a liquid crystal disposed opposite to the backlight source, and light emitted from the backlight source can illuminate the liquid crystal. The backlight source adopted by the display panel of the embodiment of the present disclosure is the same as the backlight source in the above embodiment, and therefore, the same advantageous effects are obtained, and the description is omitted here. In addition, the display panel can be used for mobile phones, computers and the like.
The embodiment of the disclosure also provides a backlight source correcting device. As shown in fig. 1, fig. 3 and fig. 4, the backlight source correcting device may include a carrying table 5, an image capturing assembly 8, an image processing assembly 12, a converting module 13, a light emitting assembly 9, a moving mechanism 11 and a control device 14, wherein:
the carrier table 5 has a carrier surface 6 for placing a backlight 7. The backlight 7 is the backlight in the above embodiment, and includes a light guide plate 1 and a light adjusting film 2. The light guide plate 1 has a light emitting surface 3. The light adjusting film 2 is arranged opposite to the light emitting surface 3 of the light guide plate 1, and the light adjusting film 2 is made of a photosensitive material. The image capturing assembly 8 is disposed facing the carrying surface 6 for capturing an image of the backlight 7. The image processing component 12 is used for determining whether a bright point exists in the image, and generating position information of the bright point in the image when the bright point exists in the image. The light emitting assembly 9 is disposed opposite to the carrying surface 6 and is used for emitting a designated light toward the carrying surface 6. The moving mechanism 11 is used for driving the light emitting assembly 9 to move. The control device 14 is configured to determine the position information of the bright spot on the backlight 7 according to the position information of the bright spot in the image, control the moving mechanism 11 to drive the light emitting element 9 to move to the position corresponding to the bright spot on the backlight 7 according to the position information of the bright spot on the backlight 7, control the light emitting element 9 to be turned on, and keep a preset duration to emit the specified light.
As shown in fig. 1 and fig. 3 to fig. 5, in the backlight source correction device according to the embodiment of the disclosure, in the using process, the backlight source 7 is placed on the supporting surface 6, the light emitting surface 3 of the light guide plate 1 faces away from the supporting surface 6, the position information of the bright spot on the backlight source 7 is determined through the image collecting assembly 8, the image processing assembly 12 and the control device 14, the moving mechanism 11 is controlled by the control device 14 to drive the light emitting assembly 9 to move to the position corresponding to the bright spot on the backlight source 7, and the light emitting assembly 9 is controlled to emit the designated light 17, so that the bright spot is eliminated without detaching the backlight source 7, and the uniformity of light emission is improved; meanwhile, bright spots on the backlight source 7 do not need to be determined manually, and the working efficiency is improved.
The following describes each part of the backlight correction device according to the embodiment of the present disclosure in detail:
as shown in fig. 3, the supporting platform 5 may have a supporting surface 6 for placing a backlight 7. The carrying surface 6 may be disposed horizontally, but not limited thereto.
As shown in fig. 3 and 4, the image capturing assembly 8 may be disposed toward the supporting surface 6 for capturing an image of the backlight 7 placed on the supporting surface 6. The image capturing assembly 8 may be attached to the carrier 5. For example, the carrier 5 includes a support 10, and the image capturing assembly 8 is connected to the support 10. Further, the image acquisition assembly 8 may be a camera or the like.
As shown in fig. 4, the image processing assembly 12 may be connected to the image capturing assembly 8 to receive the image of the backlight 7 captured by the image capturing assembly 8, and may analyze the image to determine whether there is a bright point in the image, and when there is a bright point in the image, generate position information of the bright point in the image, without manually determining the bright point on the backlight 7, thereby improving the working efficiency. For example, the principle of the image processing component 12 determining that there is a bright spot in the image and generating the position information of the bright spot in the image is as follows: and acquiring the brightness value of each pixel in the image, comparing the brightness value with a brightness threshold value, and determining the position of the bright point according to the pixel of which the brightness value is greater than the brightness threshold value. One bright spot may include one or more pixels. Of course, the present disclosure may identify bright spots in the image in other ways as well.
As shown in fig. 3, the light emitting element 9 may be disposed opposite to the supporting surface 6 for emitting a predetermined light toward the supporting surface 6, so as to emit the predetermined light toward the backlight 7 disposed on the supporting surface 6, thereby reducing the transmittance of the light adjusting film 2 on the backlight 7. For example, the material of the light adjusting film 2 of the backlight 7 includes silver halide, and the light emitting element 9 can emit ultraviolet rays. The light emitting assembly 9 may also be attached to the carrier 5, for example, the light emitting assembly 9 is attached to the bracket 10.
As shown in fig. 3 and 4, the moving mechanism 11 may be connected to the light emitting module 9 for driving the light emitting module 9 to move, so that the light emitting module 9 can move to a plurality of positions to eliminate bright spots on different areas of the backlight 7. The light emitting assembly 9 can emit specified light perpendicular to the bearing surface 6, and the light emitting assembly 9 can be conveniently aligned with a bright spot on the backlight 7 to eliminate the bright spot. In addition, the image capturing unit 8 may be connected to a moving mechanism 11, and may move along with the light emitting unit 9 after capturing the image of the backlight 7.
The movement mechanism of the present disclosure may include a track assembly, a first drive, and a second drive. In one embodiment of the displacement mechanism, the track assembly includes a first rail 18 and a second rail 19, as shown in fig. 3 and 6. The first rail 18 and the second rail 19 are parallel to the carrying surface 6, and the first rail 18 extends along a first direction and the second rail 19 extends along a second direction. The first and second directions are different, e.g., the first and second directions are perpendicular. The first guide rail 18 is slidably connected to the second guide rail 19, and the light emitting module 9 is slidably disposed on the first guide rail 18. The first driving device 13 can be connected with the first guide rail 18, and can drive the first guide rail 18 to slide on the second guide rail 19 along the second direction, so that the light emitting assembly 9 moves along the second direction, and the moving distance is greater than the size of the backlight source 7 on the bearing table 5 in the second direction; the second driving device 22 may be connected to the light emitting module 9, and may drive the light emitting module 9 to slide on the first guide rail 18 along the first direction by a distance greater than the dimension of the backlight 7 on the carrying platform 5 in the first direction, so that the light emitting module 9 may move to a position corresponding to any area of the backlight 7 in a direction parallel to the carrying surface 6. The second guide rail 19 may be fixed to the carrier table 5, for example, to the above-mentioned support 10. The first and second driving devices 13 and 22 may be air cylinders, hydraulic cylinders, or the like.
In another embodiment of the moving mechanism, as shown in fig. 3 and 7, the rail assembly comprises a rail 21 extending along a straight line. The rail 21 can rotate at any angle on a plane parallel to the bearing surface 6, and the light emitting assembly 9 is slidably disposed on the rail 21. The first driving device 13 can be connected to the rail 21 to drive the rail 21 to rotate, so as to drive the light emitting assembly 9 to rotate; the second driving device 22 may be connected to the light emitting assembly 9, and may drive the light emitting assembly 9 to slide on the rail 21 along the extending direction of the rail 21, and the sliding distance is greater than the dimension of the backlight 7 in any direction parallel to the carrying surface 6, so that the light emitting assembly 9 may move to a position corresponding to any area of the backlight 7 in the direction parallel to the carrying surface 6. For example, the rail 21 can be rotatably connected to the support 10 in a plane parallel to the bearing surface 6. Wherein the support 10 and the rail 21 can be connected by a rotating shaft 20. The axis of rotation 20 may be perpendicular to the bearing surface 6. The first driving device 13 may be connected between the rotating shaft 20 and the bracket 10, and is configured to drive the rotating shaft 20 to rotate around the central axis of the rotating shaft 20 by any angle, so as to drive the track 21 to rotate through the rotating shaft 20. The first driving means 13 may be a motor or the like. The second driving device 22 may be an air cylinder, a hydraulic cylinder, or the like.
As shown in fig. 4, the control device 14 may be connected to the image processing assembly 12 to receive the position information of the bright point in the image, and determine the position information of the bright point on the backlight 7 according to the position information of the bright point in the image. The control device 14 may be connected to both the moving mechanism 11 and the light emitting module 9, and is configured to control the moving mechanism 11 to drive the light emitting module 9 to move to a target position along the track module according to the position information of the bright spot on the backlight 7, that is, to correspond to the position of the bright spot on the backlight 7, and control the light emitting module 9 to be turned on, and to be kept for a preset duration to emit the specified light. The preset time period may be 10-20s, such as 10s, 12s, 13s, 16s, 18s, 20s, and so on. The control device 14 can convert the position information of the bright spot on the backlight 7 into a target position coordinate of the light emitting element 9 according to the corresponding relationship between the position information of the bright spot on the backlight 7 and a pre-established coordinate system, and control the moving mechanism 11 to drive the light emitting element 9 to move to the target position according to the target position coordinate. The control means 14 may comprise a processor or the like. The embodiment of the present disclosure may integrate the image processing component 12 and the control device 14 into a computer system.
As shown in fig. 4, in order to accurately determine whether the light emitting assembly 9 moves to a position corresponding to a bright point on the backlight, the backlight correction device according to the embodiment of the disclosure may further include a position detection device 15. The position detection means 15 is connected to the control means 14 for detecting the position of the light emitting assembly 9 and sending it to the control means 14. The control device 14 is used for determining whether the light emitting assembly 9 moves to a position corresponding to a bright spot on the backlight 7 according to the position information of the light emitting assembly 9, and controlling the light emitting assembly 9 to emit a specified light when the light emitting assembly 9 moves to the position corresponding to the bright spot on the backlight 7. By means of the position detection means 15, the position of the light emitting assembly 9 can be accurately determined. The position detecting device 15 may be a position sensor or the like. Furthermore, the position detection device 15 may be connected to the carrier table 5, for example, the position detection device 15 is connected to the support 10.
As shown in fig. 1, 3 and 4, in the backlight source calibration device of the present disclosure, in the using process, the backlight source 7 is placed on the bearing surface 6, and the light emitting surface 3 of the light guide plate 1 faces back to the bearing surface 6; the image acquisition component 8 and the image processing component 12 generate the position information of the bright spots in the image; the control device 14 determines the position information of the bright spot on the backlight 7 according to the position information of the bright spot in the image, and controls the moving mechanism 11 to drive the light emitting assembly 9 to move to the position corresponding to the bright spot on the backlight 7 according to the position information of the bright spot on the backlight 7; meanwhile, the position information of the light emitting component 9 is detected by the position detection device 15 and sent to the control device 14; the control device 14 determines whether the light emitting assembly 9 moves to a position corresponding to a bright spot on the backlight 7 according to the position information of the light emitting assembly 9, and controls the moving mechanism 11 to stop driving the light emitting assembly 9 and controls the light emitting assembly 9 to be turned on to emit the specified light for 16s when the light emitting assembly 9 moves to the position corresponding to the bright spot on the backlight 7.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (8)
1. A display panel comprising a backlight, the backlight comprising:
a light guide plate having a light emitting surface;
the light adjusting film is arranged opposite to the light emitting surface of the light guide plate and made of a photosensitive material, and the light transmittance of the photosensitive material can be reduced under the irradiation of specified light;
and the prism assembly is arranged between the light adjusting film and the light guide plate.
2. The display panel according to claim 1, wherein a material of the light adjusting film comprises silver halide.
3. The display panel according to claim 1, wherein the thickness of the light adjusting film is 90 to 110 μm.
4. A backlight correction apparatus, comprising:
the backlight source comprises a light guide plate and a light adjusting film, the light guide plate is provided with a light emitting surface, the light adjusting film is opposite to the light emitting surface of the light guide plate, and the light adjusting film is made of a photosensitive material;
the image acquisition assembly faces the bearing surface and is used for acquiring the image of the backlight source;
the image processing assembly is used for judging whether the image has a bright spot or not and generating position information of the bright spot in the image when the image has the bright spot;
the light emitting assembly is arranged opposite to the bearing surface and used for emitting specified light rays towards the bearing surface;
the moving mechanism is used for driving the light emitting component to move;
and the control device is used for determining the position information of the bright spot on the backlight source according to the position information of the bright spot in the image, controlling the moving mechanism to drive the light emitting assembly to move to the position corresponding to the bright spot on the backlight source according to the position information of the bright spot on the backlight source, controlling the light emitting assembly to be started, and continuously presetting the duration to emit the specified light.
5. The backlight correction device of claim 4, further comprising:
position detection means for detecting position information of the light emitting element;
the control device is further used for judging whether the light emitting assembly moves to a position corresponding to a bright spot on the backlight source according to the position information of the light emitting assembly, and controlling the light emitting assembly to be started when the light emitting assembly moves to the position corresponding to the bright spot on the backlight source.
6. The backlight correction device of claim 4, wherein the material of the light adjusting film comprises silver halide, and the light emitting element is capable of emitting ultraviolet light.
7. The backlight source calibration device of claim 4 wherein the light emitting elements are capable of emitting a specified light perpendicular to the bearing surface.
8. The backlight correction device of claim 4, wherein the predetermined time period is 10-20 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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