CN108766256B - Wavelength conversion head, pixel unit, display, electronic device and detection method - Google Patents
Wavelength conversion head, pixel unit, display, electronic device and detection method Download PDFInfo
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- CN108766256B CN108766256B CN201810144888.4A CN201810144888A CN108766256B CN 108766256 B CN108766256 B CN 108766256B CN 201810144888 A CN201810144888 A CN 201810144888A CN 108766256 B CN108766256 B CN 108766256B
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Abstract
The invention discloses a wavelength conversion head, a pixel unit, electronic equipment and a fault detection method, wherein the wavelength conversion head comprises: the mounting grid comprises a bottom plate and at least one side plate, wherein a visible light detector is arranged on the side plate and corresponds to unique first coded information; and the wavelength conversion box is movably arranged on the bottom plate, and a first fluorescent powder area, a second fluorescent powder area and a third fluorescent powder area are sequentially arranged in the wavelength conversion box so as to analyze and process faults according to the first illumination information. According to the invention, the fault analysis processing is carried out according to the first illumination information collected by the visible light detector, and the first coding information is fed back when the fault occurs, so that the pixel unit with the fault is quickly determined, the quick processing by a maintainer is facilitated, the confirming speed of the pixel unit with the fault and the maintenance speed of the display device are improved, and the maintenance cost of the display device is also reduced.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a wavelength conversion head, a pixel unit, a display, an electronic device, and a method.
Background
A conventional display device includes a plurality of pixel units. When a plurality of pixel units in the display device fail, the entire display device may bring about a very bad viewing experience. Therefore, a maintenance worker is required to perform a maintenance process on the display device.
The conventional display device tests each pixel unit one by one in a manual mode to detect a faulty pixel unit. However, since the number of pixel units is excessive, the maintenance speed is slow and the labor cost is high.
Disclosure of Invention
The invention aims to provide a wavelength conversion head, a pixel unit, an electronic device and a fault detection method, and aims to solve the technical problems that the existing display device is low in maintenance speed and high in maintenance cost.
In order to solve the above problems, the present invention provides a wavelength conversion head comprising:
the mounting grid comprises a bottom plate and at least one side plate, wherein a visible light detector is arranged on the side plate and corresponds to unique first coded information;
the wavelength conversion box is movably arranged on the bottom plate, a first wavelength conversion area, a second wavelength conversion area and a third wavelength conversion area are sequentially arranged in the wavelength conversion box, and the visible light detector is used for collecting first illumination information of light emitted by the first wavelength conversion area, the second wavelength conversion area or the third wavelength conversion area so as to analyze and process faults according to the first illumination information.
As a further development of the invention, the base plate is provided with an opening, the size of which matches the size of one of the wavelength conversion regions.
As a further improvement of the invention, at least one ultraviolet light detector is arranged at the opening, the ultraviolet light detector corresponds to unique second coded information, the second coded information is different from the first coded information, and the ultraviolet light detector is used for collecting second illumination information of ultraviolet light emitted by the light source system.
As a further improvement of the invention, a cavity is arranged in the mounting grid, at least one air inlet is arranged on the bottom plate or the side plate, at least one air outlet is arranged at the top of the side plate, the cavity is communicated with the air inlet and the air outlet, and cooling air coming out from the air outlet is used for cooling the wavelength conversion box.
As a further improvement of the invention, the bottoms of the first wavelength conversion region, the second wavelength conversion region and the third wavelength conversion region are all provided with aluminum particles, and the aluminum particles are distributed in the fluorescent powder at the bottom in a scattered manner.
As a further improvement of the invention, an opaque partition is arranged between the first wavelength conversion region and the second wavelength conversion region, and an opaque partition is arranged between the second wavelength conversion region and the third wavelength conversion region.
As a further improvement of the invention, the bottom of the wavelength conversion box is a plate-shaped structure made of a material with a thermal conductivity higher than a preset threshold value.
As a further improvement of the invention, the mounting grid is also provided with at least one elastic device, one end of the elastic device is connected with one side wall of the wavelength conversion box, and the other end of the elastic device is connected with the side plate.
As a further improvement of the present invention, a magnet is disposed on a sidewall of the wavelength conversion box, a coil plate is disposed on the sidewall, or a coil plate is disposed on a bottom plate adjacent to the sidewall, or a coil plate is disposed on a light source system matched with the wavelength conversion head, the coil plate is used for passing forward or reverse current to generate magnetic field acting forces in different directions to the magnet, so as to drive the wavelength conversion box to translate left or right through the magnet.
In order to solve the above problems, the present invention further provides a pixel unit, which includes the wavelength conversion head and a light source system, wherein the light source system is configured to emit light, and the light irradiates the first wavelength conversion region, the second wavelength conversion region and the third wavelength conversion region of the wavelength conversion head.
As a further improvement of the invention, the light source system comprises a shell, the bottom of the shell is provided with a light emitting device, the top of the shell is provided with a light outlet, the light emitting device is used for emitting light, and the light is emitted to a fluorescent powder area through the light outlet; the shell comprises a reflecting cup and a fixed cylinder, the reflecting cup is hermetically connected with the fixed cylinder, the light-emitting device is arranged in the reflecting cup, and the light outlet is arranged at the top end of the fixed cylinder; a light guide component is arranged in the fixed cylinder, one end of the light guide component is over against the light-emitting device, and the other end of the conduit device extends out of the light outlet.
As a further improvement of the invention, the light guide assembly comprises a lens and an optical fiber, the lens and the optical fiber are sequentially arranged on the light emitting path of the light emitting device, and the top end of the optical fiber leads to the light outlet.
As a further improvement of the invention, a stopper is also arranged in the fixed cylinder and used for fixing the optical fiber;
and/or the top of the optical fiber is provided with an optical fiber sleeve, and the optical fiber penetrates through the optical fiber sleeve;
and/or the fixed cylinder is also provided with a fixed structure, and the fixed structure is used for fixing the lens.
As a further improvement of the invention, the outer wall of the lens is provided with a groove, the fixing mechanism comprises a soft belt and a fixing support which are matched with the groove, the fixing support is fixedly arranged in the fixing cylinder, the soft belt is embedded in the groove, and the fixing support is fixedly connected.
In order to solve the above problem, the present invention further provides a display device including the above pixel unit.
As a further improvement of the invention, the pixel unit further comprises a fan, and the fan is used for carrying out heat dissipation treatment on the pixel unit.
In order to solve the above problem, the present invention further provides an electronic device, which includes a processor and the above display, wherein the display includes a plurality of pixel units, each pixel unit includes a visible light detector and an ultraviolet light detector, and the processor is configured to receive first illumination information of the visible light detector and second illumination information of the ultraviolet light detector, and perform fault analysis processing according to the first illumination information and/or the second illumination information.
In order to solve the above problem, the present invention further provides a method for detecting a failure of a pixel unit, including:
collecting first illumination information of light rays emitted by a first wavelength conversion region, a second wavelength conversion region or a third wavelength conversion region by using a visible light detector at intervals of a first preset time period, wherein the visible light detector corresponds to unique coded information;
judging whether the first illumination information exceeds a first intensity threshold value;
and when the first illumination information does not exceed the first intensity threshold value, judging that the pixel unit has a fault.
As a further improvement of the present invention, the determining that the pixel unit fails includes:
at intervals of a second preset time period, collecting second illumination information of ultraviolet rays emitted by the light source system by using an ultraviolet light detector, wherein the ultraviolet light detector corresponds to unique second coded information;
judging whether the second illumination information exceeds a second intensity threshold value;
if the second illumination information does not exceed the second intensity threshold, feeding back second coding information corresponding to the ultraviolet light detector to judge that the light source system has a fault;
and if the second illumination information exceeds a second intensity threshold value, feeding back first coding information corresponding to the visible light detector to judge that the wavelength conversion head has a fault.
As a further improvement of the present invention, the method further comprises the following steps of feeding back first coded information corresponding to the visible light detector:
and respectively testing the first wavelength conversion region, the second wavelength conversion region and the third wavelength conversion region to determine whether the fluorescent powder in the first wavelength conversion region, the second wavelength conversion region and/or the third wavelength conversion region has faults or not.
The invention leads each visible light detector to correspond to unique first coded information by coding each visible light detector. When the fault analysis processing is carried out according to the first illumination information collected by the visible light detector and the first coding information is fed back during the fault, the pixel unit with the fault is quickly determined, so that the fault processing is convenient for a maintainer to quickly process, the confirming speed of the pixel unit with the fault and the maintenance speed of the display device are improved, and the maintenance cost of the display device is also reduced.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a wavelength conversion head according to the present invention;
FIG. 2 is a schematic structural diagram of a wavelength conversion head according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a wavelength conversion head according to a third embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a wavelength conversion head according to a fourth embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fifth embodiment of a wavelength conversion head according to the present invention;
FIG. 6 is a schematic structural diagram of a sixth embodiment of a wavelength conversion head according to the present invention;
FIG. 7 is a schematic structural diagram of a seventh embodiment of a wavelength conversion head according to the present invention;
FIG. 8 is a schematic structural diagram of a pixel unit according to a first embodiment of the present invention;
FIG. 9 is a schematic diagram of a pixel unit according to a second embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a pixel unit according to a third embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a pixel unit according to a fourth embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a pixel unit according to a fifth embodiment of the present invention;
FIG. 13 is a schematic structural diagram of one embodiment of a lens in a pixel cell according to the present invention;
FIG. 14 is a diagram illustrating a frame structure of a display according to a first embodiment of the present invention;
FIG. 15 is a schematic view of a frame structure of a display according to a second embodiment of the present invention;
FIG. 16 is a diagram of a frame structure of an embodiment of an electronic device of the invention;
FIG. 17 is a flowchart illustrating a method for detecting a failure of a pixel unit according to an embodiment of the present invention;
fig. 18 is a flowchart illustrating an embodiment of a failure determination process in the pixel unit failure detection method according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
FIG. 1 illustrates one embodiment of a wavelength conversion head of the present invention. In this embodiment, the wavelength conversion head 10 includes a mounting grid 100 and a wavelength conversion cartridge 101.
The mounting grid 100 comprises a bottom plate 1001 and at least one side plate 1002, a visible light detector 1003 is arranged on the side plate 1002, and the visible light detector 1003 corresponds to one unique first encoding message.
The wavelength conversion box 101 is sequentially provided with a first wavelength conversion region 1011, a second wavelength conversion region 1012 and a third wavelength conversion region 1013, the wavelength conversion box 101 is movably disposed on the bottom plate 1001, and the visible light detector 1003 is configured to collect first illumination information of light emitted through the first wavelength conversion region 1011, the second wavelength conversion region 1012 or the third wavelength conversion region 1013, so as to perform fault analysis processing according to the first illumination information.
Specifically, the processor of the electronic device receives first illumination information sent by the visible light detector 1003, and feeds back first encoding information corresponding to the visible light detector 1003 when it is determined that the first illumination information meets a preset fault determination condition.
It should be noted that the preset fault determination condition of the present embodiment may be: and judging whether the illumination intensity corresponding to the first illumination information exceeds a first intensity threshold value, and when the illumination intensity corresponding to the first illumination information does not exceed the first intensity threshold value, indicating that a preset fault judgment condition is met.
The embodiment encodes each visible light detector, so that each visible light detector corresponds to unique first encoded information. When the fault analysis processing is carried out according to the first illumination information collected by the visible light detector and the first coding information is fed back during the fault, the pixel unit with the fault is quickly determined, so that the fault processing is convenient for a maintainer to quickly process, the confirming speed of the pixel unit with the fault and the maintenance speed of the display device are improved, and the maintenance cost of the display device is also reduced.
In order to reduce the optical loss, on the basis of the above embodiment, in other embodiments, referring to fig. 2, the bottom plate 1001 is provided with an opening 110, and the size of the opening 110 is matched with the size of one wavelength conversion region.
Specifically, the size of the opening 110 is equal to or less than the size of one wavelength conversion region.
This embodiment is through setting up an opening that matches with wavelength conversion district size, and consequently, the light that emitting device sent passes the opening, and the phosphor powder of direct irradiation to a wavelength conversion district to avoided bottom plate loss light, and then reduced the optical loss, promoted light utilization ratio.
Further, in order to accurately determine whether the fluorescent head fails or the light source system fails, in another embodiment, referring to fig. 2, at least one ultraviolet light detector 120 is disposed at the opening 110, the ultraviolet light detector 120 corresponds to unique second encoded information, the second encoded information is different from the first encoded information, and the ultraviolet light detector 120 is configured to collect second illumination information of ultraviolet light emitted by the light source system.
Specifically, the processor of the electronic device receives the second illumination information sent by the ultraviolet light detector 120, and feeds back the second encoding information corresponding to the ultraviolet light detector 120 when it is determined that the second illumination information meets the preset fault determination condition.
According to the embodiment, whether the light source system or the fluorescent head fails is judged according to the combination of the first illumination information and the second illumination information, so that the detection speed of the failure is further increased, the maintenance speed of the pixel unit is further increased, and the maintenance cost is further reduced.
In the use process of the pixel unit, light generated by the light emitting device irradiates one fluorescent powder area for a long time, and fluorescent powder in the fluorescent powder area generates great heat, so that instant heat dissipation is needed. On the basis of the above embodiment, in other embodiments, referring to fig. 3, a cavity 130 is disposed in the installation grid 100, at least one air inlet (not shown) is disposed on the bottom plate 1001 or the side plate 1002, at least one air outlet 132 is disposed at the top of the side plate 1002, the cavity 130 communicates with the air inlet and the air outlet 132, and the cooling air coming out from the air outlet 132 is used for cooling the wavelength conversion box 101.
It should be noted that a display includes a mounting frame, and the mounting frame includes a plurality of mounting lattices. The air inlet of one of the mounting grids is communicated with the air outlet pipe of the gas generator, and the rest mounting grids are communicated with each other through the cavities of the adjacent mounting grids so as to realize the cooling gas flowing through the whole mounting rack.
In the embodiment of the present application, the air inlet of each mounting bracket may be disposed on the bottom plate, or may be disposed on the side plate. As an example, the air inlet is disposed at the connection position of the bottom plate and the side plate, so that the cooling air can be rapidly introduced into the bottom plate to increase the temperature difference between the bottom plate and the bottom of the wavelength conversion box, thereby increasing the heat conduction rate, and can be rapidly introduced into the air outlet of the side plate to rapidly introduce the cooling air into the wavelength conversion box through the air outlet, thereby increasing the cooling rate of the wavelength conversion box.
This embodiment sets up the air inlet through bottom plate or curb plate bottom, and the curb plate top sets up the gas outlet, both takes away and conducts to bottom plate department heat, also cools off wavelength conversion box through the cooling gas in exit to the temperature of wavelength conversion box and phosphor powder has been reduced, and then both promoted phosphor powder's stability can, also promoted the life of fluorescence head.
In order to further improve the stability of the phosphor and the heat dissipation effect of the fluorescent head, in other embodiments based on the above embodiments, the bottom portions of the first wavelength conversion region 1011, the second wavelength conversion region 1012 and the third wavelength conversion region 1013 are all provided with aluminum particles, and the aluminum particles are discretely distributed in the phosphor at the bottom portion. Preferably, the aluminum particle content accounts for 20% of the phosphor at the bottom of the wavelength conversion region, wherein 1-2cm of the bottom of the wavelength conversion region is the bottom phosphor.
This embodiment sets up the aluminium granule through the bottom in each phosphor powder district, because the aluminium granule has the reflection function to and the characteristic of heat conduction function, so, can promote the rate of heat conduction to the bottom plate, and then further promoted the radiating effect, and the stability of phosphor powder can.
In order to further improve the stability of the phosphor and the heat dissipation effect of the fluorescent head, the bottom of the wavelength conversion box 101 is made of a material with a thermal conductivity higher than a predetermined threshold value to form a plate-like structure.
The bottom of the wavelength conversion cell 101 in this embodiment is a light transmissive plate, and preferably, the bottom of the wavelength conversion cell 101 may be a transparent ALN ceramic backplane.
This embodiment can promote the speed of heat conduction to the bottom plate through setting up the box body that coefficient of heat conductivity is high, and then further promoted the radiating effect to and the stability ability of phosphor powder.
In order to improve the pure color rendering performance of the pixel unit, in other embodiments based on the above embodiments, referring to fig. 4, an opaque partition 140 is disposed between the first wavelength conversion region 1011 and the second wavelength conversion region 1012, and an opaque partition 140 is disposed between the second wavelength conversion region 1012 and the third wavelength conversion region 1013.
It should be noted that the opaque partition 140 in this embodiment is a plate-shaped structure made of an opaque material.
The light-tight partition board is arranged between different phosphor powder areas, so that the influence of light rays emitted by the light-emitting device on other phosphor powder areas is further avoided, and the pure color rendering performance of the pixel unit is further improved.
In order to improve the self-resetting performance of the pixel unit, therefore, on the basis of the above-mentioned embodiment, in another embodiment, referring to fig. 5, the mounting case 100 is further provided with at least one elastic device 160, one end of the elastic device 160 is connected to one side wall of the wavelength conversion box 101, and the other end of the elastic device 160 is connected to the side plate 1002.
It should be noted that the elastic device 160 in this embodiment may include a spring, preferably, the spring is a torsion spring, and furthermore, the elastic device 160 in this embodiment may further include an elastic string.
In the embodiment, by arranging the elastic device, when the wavelength conversion box resets after moving leftwards or rightwards, the elastic device controls the wavelength conversion box to avoid moving back and forth when the wavelength conversion box resets, so that the automatic resetting stability of the fluorescent head is improved.
In order to simplify the moving mechanism of the wavelength conversion box, in another embodiment, referring to fig. 6, on the side wall of the wavelength conversion box 101, a magnet 160 is provided, and a coil plate 170 is provided on the side plate 1002. The coil plate 170 is used to apply forward or reverse current to generate magnetic field forces in different directions to the magnet 160, so as to drive the wavelength conversion box 101 to translate left or right through the magnet 160.
In other embodiments, referring to fig. 7, the magnet 160 is disposed on the sidewall of the wavelength conversion box 101, and the coil plate 170 is disposed on the bottom plate 10001 adjacent to the side plate 1002, the coil plate 170 is used for passing forward or reverse current to generate magnetic field forces in different directions to the magnet 160, so that the magnet 160 can drive the wavelength conversion box 101 to move horizontally or leftwards.
In other embodiments, referring to FIG. 8, or a light source system matching the wavelength conversion head 10, a coil plate 170 is disposed on the light source system, and the coil plate 170 is used to apply forward or reverse currents to generate magnetic field forces in different directions to the magnet 160, so as to drive the wavelength conversion box 101 to translate left or right through the magnet 160.
Fig. 9 shows one embodiment of a pixel cell of the present invention. In this embodiment, the pixel unit 200 includes the wavelength conversion head 10 and the light source system 11 described in the above embodiments, the light source system 11 is used to emit light, and the light irradiates the first wavelength conversion region 1011, the second wavelength conversion region 1012 and the third wavelength conversion region 1013 of the wavelength conversion head 10.
It should be noted that, for more detailed description of the technical solution of the present invention, the first wavelength conversion region 1011 may be a b (blue) color phosphor region, the second wavelength conversion region 1012 may be a g (green) color phosphor region, and the third wavelength conversion region 1013 may be an r (red) color phosphor region.
Referring to fig. 10, the light source system 11 includes a housing 210, a light emitting device 211 is disposed at a bottom of the housing 210, a light outlet is disposed at a top of the housing 210, the light emitting device 211 is used for emitting light, and the light is emitted to a wavelength conversion region through the light outlet.
The pixel unit of the embodiment only needs one light-emitting device, so that the requirement of the light-emitting device is reduced, and the production cost of the pixel unit is reduced. In addition, the light emitted by the light emitting device just corresponds to one wavelength conversion area, and other wavelength conversion areas cannot be affected, so that the pure color rendering performance of the pixel unit is improved.
In order to improve the light utilization efficiency of the light emitting device, in another embodiment based on the above embodiment, referring to fig. 10, the housing 210 includes a reflector 2101 and a fixed cylinder 2102, the reflector 2101 is hermetically connected to the fixed cylinder 2102, the light emitting device 211 is disposed in the reflector 2101, and the light outlet is disposed at the top end of the fixed cylinder 2102.
It should be noted that the reflector 2101 and the fixed cylinder 2102 in this embodiment may be screwed or welded. Further, the light emitting device 211 of the present embodiment may be an LED lamp, and preferably, the light emitting device 211 is an ultraviolet LED lamp.
In the embodiment, the light-emitting device is arranged in the light-reflecting cup, so that most of light emitted by the light-emitting device is emitted to the wavelength conversion box through the light outlet, and the effective utilization rate of the light is improved.
Further, in order to avoid the light emitted from the light emitting device from leaking and reduce the influence on other phosphor regions, in another embodiment, referring to fig. 11, a light guide assembly 220 is disposed in the fixing cylinder 2102, one end of the light guide assembly 220 faces the light emitting device 211, and the other end of the light guide assembly faces a wavelength conversion region.
It should be noted that the light guide assembly 220 in this embodiment may be an optical fiber, or may be a multi-stage optical collector.
Preferably, the light guide assembly 220 includes a lens 2201 and an optical fiber 2202, the lens 2201 and the optical fiber 2202 are sequentially disposed on the light emitting path of the light emitting device 211, and the top end of the optical fiber 2202 leads to the light outlet.
Specifically, the lens 2201 is disposed in the light emitting direction of the light emitting device 211, and the optical fiber 2202 is disposed above the lens 2201 and protrudes out of the light outlet.
In the embodiment, most of the light emitted by the light emitting device enters the optical fiber through the lens, so that the light utilization rate is further improved. Further, the light rays enter one fan-shaped fluorescent powder area uniformly through the optical fibers, so that the influence of the light rays on other fan-shaped fluorescent powder areas is further avoided, and the pure color rendering performance of the pixel unit is further improved.
The light emitted by the light source system needs to be over against a phosphor area, so that the optical fiber needs to be prevented from shaking in the using process and the installation difficulty of the optical fiber in the installation process is reduced. In addition to the above embodiments, in other embodiments, referring to fig. 12, a fiber jacket 230 is provided on the top of the fiber 2202, and the fiber 2202 extends through the fiber jacket 230.
According to the invention, the optical fiber sleeve is arranged at the light outlet, so that the optical fiber can be installed only by inserting the optical fiber into the optical fiber sleeve, and the light emitted by the optical fiber can be ensured to just fall into a certain phosphor powder area, thereby reducing the installation difficulty of the optical fiber and improving the alignment rate of the light emitted by the optical fiber.
In order to further avoid the optical fiber from shaking during use, in another embodiment, referring to fig. 12, a stopper 240 is further disposed in the fixing cylinder 2102, and the stopper 240 is used to fix the optical fiber 2202, on the basis of the above embodiment.
Preferably, two stoppers 240 are provided in the fixed cylinder 2102 of the present embodiment.
This embodiment is through setting up the stopper to avoid the optic fibre off tracking, thereby promoted the stability ability of optic fibre.
In addition to the above embodiments, in other embodiments, the fixing cylinder 2102 is further provided with a fixing structure for fixing the lens 2201.
The fixing structure in this embodiment may be a bracket, one end of the bracket is provided with the lens 2201, and the other end of the bracket is fixedly connected to the fixing cylinder 2102.
Preferably, referring to fig. 13, the outer wall of the lens 2201 is provided with a groove 22011, the fixing mechanism comprises a soft belt matched with the groove 22011 and a fixing bracket, the fixing bracket is fixedly arranged in the fixing barrel 2102, the soft belt is embedded in the groove 22011, and the fixing bracket is fixedly connected.
This embodiment is through setting up the recess at the outer wall of lens to so that can realize the good fixed of lens through soft area, thereby simplified the fixed knot of lens and constructed, reduced pixel component's the production technology degree of difficulty, and manufacturing cost.
Referring to fig. 14, the present embodiment further provides a display 300, where the display 300 includes a plurality of pixel units 200 described in the above embodiments. It should be noted that the pixel unit 200 in this embodiment is similar to the pixel unit described in the above embodiments, and therefore, the description thereof is omitted here.
In other embodiments, referring to fig. 15, the display further includes a fan 201, and the fan 201 is used for performing heat dissipation processing on the pixel unit.
In this embodiment, the heat dissipation performance of each pixel unit is further improved by the fan 201.
Referring to fig. 16, another embodiment of the present embodiment further provides an electronic device 400, where the electronic device 400 includes the display 300, the driving circuit 301, and the processor 302 described in the foregoing embodiment, the driving circuit 301 is configured to drive the display 300 to display an image, the display 300 includes a plurality of pixel units, each pixel unit includes a visible light detector and an ultraviolet light detector, and the processor 302 is configured to receive first illumination information of the visible light detector and second illumination information of the ultraviolet light detector, and perform fault analysis processing according to the first illumination information and/or the second illumination information.
Fig. 17 shows an embodiment of the inventive method of failure detection of a pixel cell. In this embodiment, the method for detecting a failure of a pixel unit includes the steps of:
step S1, collecting first illumination information of light emitted through the first wavelength conversion region, the second wavelength conversion region, or the third wavelength conversion region by using the visible light detector at intervals of a first preset time period, where the visible light detector corresponds to a unique encoded information.
Step S2, determining whether the first illumination information exceeds a first intensity threshold; when the first illumination information does not exceed the first intensity threshold, step S3 is performed.
In step S3, it is determined that the pixel cell has failed.
When the method for detecting failure of pixel unit of the invention is applied to the use process of the display device, it needs to determine whether the failed pixel unit is failure of the fluorescent head or failure of the light source system, therefore, on the basis of the above embodiment, in other embodiments, referring to fig. 18, step S3 includes:
and step S30, collecting second illumination information of the ultraviolet light emitted by the light source system by using an ultraviolet light detector at intervals of a second preset time period, wherein the ultraviolet light detector corresponds to a unique second code information.
In step S31, it is determined whether the second illumination information exceeds a second intensity threshold. If the second illumination information does not exceed the second intensity threshold, step S32 is executed. If the second illumination information exceeds the second intensity threshold, step S33 is executed.
And step S32, feeding back second coding information corresponding to the ultraviolet light detector to judge that the light source system has faults.
And step S33, feeding back first coding information corresponding to the visible light detector to judge that the wavelength conversion head has a fault.
On the basis of the foregoing embodiment, in other embodiments, step S33 specifically includes:
and respectively testing the first wavelength conversion region, the second wavelength conversion region and the third wavelength conversion region to determine whether the fluorescent powder in the first wavelength conversion region, the second wavelength conversion region and/or the third wavelength conversion region has faults or not.
The above detailed description of the embodiments of the present invention is provided as an example, and the present invention is not limited to the above described embodiments. It will be apparent to those skilled in the art that any equivalent modifications or substitutions can be made within the scope of the present invention, and thus, equivalent changes and modifications, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.
Claims (12)
1. A wavelength conversion head, comprising: the mounting grid comprises a bottom plate and at least one side plate, wherein a visible light detector is arranged on the side plate and corresponds to unique first coded information; the wavelength conversion box is movably arranged on the bottom plate, a first wavelength conversion area, a second wavelength conversion area and a third wavelength conversion area are sequentially arranged in the wavelength conversion box, and the visible light detector is used for collecting first illumination information of light emitted by the first wavelength conversion area, the second wavelength conversion area or the third wavelength conversion area; an opening is arranged on the bottom plate, and the size of the opening is matched with that of one wavelength conversion area; the opening is provided with at least one ultraviolet light detector, the ultraviolet light detector corresponds to unique second coded information, the second coded information is different from the first coded information, and the ultraviolet light detector is used for collecting second illumination information of ultraviolet light emitted by the light source system.
2. The wavelength conversion head according to claim 1, wherein a cavity is formed in the mounting compartment, at least one air inlet is formed in the bottom plate or the side plate, at least one air outlet is formed in the top of the side plate, the cavity communicates the air inlet and the air outlet, and cooling air discharged from the air outlet is used for cooling the wavelength conversion cartridge.
3. The wavelength conversion head according to claim 1, wherein said mounting grid is further provided with at least one elastic device, one end of said elastic device is connected to a side wall of said wavelength conversion box, and the other end of said elastic device is connected to said side plate.
4. The head of claim 3, wherein a magnet is disposed on a sidewall of the wavelength conversion box, a coil plate is disposed on the sidewall, or the coil plate is disposed on a bottom plate adjacent to the sidewall, or the coil plate is disposed on a light source system matched with the wavelength conversion box, and the coil plate is used for supplying forward or reverse current to generate magnetic field acting forces in different directions to the magnet, so as to drive the wavelength conversion box to move left or right through the magnet.
5. A pixel cell comprising a wavelength conversion head according to any one of claims 1 to 4 and a light source system for emitting light, said light illuminating a wavelength conversion region of said wavelength conversion head.
6. The pixel unit according to claim 5, wherein the light source system comprises a housing, the housing comprises a light reflecting cup and a fixed cylinder, the light reflecting cup is hermetically connected with the fixed cylinder, a light emitting device is arranged in the light reflecting cup, a light outlet is arranged at the top end of the fixed cylinder, the light emitting device is used for emitting light, and the light is emitted to a wavelength conversion region through the light outlet; a light guide assembly is arranged in the fixed cylinder, one end of the light guide assembly is over against the light emitting device, and the other end of the light guide assembly is over against a wavelength conversion region; the light guide assembly comprises a lens and optical fibers, the lens and the optical fibers are sequentially arranged on a light emitting path of the light emitting device, and the top end of the optical fiber leads to the light outlet.
7. The pixel cell of claim 6, wherein a stopper is further disposed in the fixing cylinder, and the stopper is used for fixing the optical fiber; and/or the top of the optical fiber is provided with an optical fiber sleeve, and the optical fiber penetrates through the optical fiber sleeve;
and/or the fixed cylinder is also provided with a fixed structure, and the fixed structure is used for fixing the lens; the outer wall of the lens is provided with a groove, the fixing structure comprises a soft belt and a fixing support, the soft belt is matched with the groove, the fixing support is fixedly arranged in the fixing cylinder, the soft belt is embedded into the groove, and the fixing support is fixedly connected.
8. A display comprising a pixel cell according to any one of claims 5 to 7.
9. The display of claim 8, further comprising a fan, the pixel unit comprising a light source system and a temperature controlled wavelength conversion head, the fan for cooling light emitting devices of the light source system and a wavelength conversion box for cooling the temperature controlled wavelength conversion head.
10. An electronic device, characterized in that it comprises a processor and a display according to one of claims 8 to 9, the display comprising a plurality of pixel units, each pixel unit comprising a visible light detector and an ultraviolet light detector, the processor being configured to receive first illumination information of the visible light detector and second illumination information of the ultraviolet light detector and to perform a fault analysis process based on the first illumination information and/or the second illumination information.
11. A method for detecting a failure of a pixel cell according to claim 7, comprising: collecting first illumination information of light rays emitted by a first wavelength conversion region, a second wavelength conversion region or a third wavelength conversion region by using a visible light detector at intervals of a first preset time period, wherein the visible light detector corresponds to unique coded information; judging whether the first illumination information exceeds a first intensity threshold value; and when the first illumination information does not exceed a first intensity threshold value, judging that the pixel unit has a fault.
12. The method of claim 11, wherein determining that the pixel cell is faulty comprises: collecting second illumination information of ultraviolet rays emitted by the light source system by using an ultraviolet light detector at intervals of a second preset time period, wherein the ultraviolet light detector corresponds to unique second coded information; judging whether the second illumination information exceeds a second intensity threshold value; if the second illumination information does not exceed a second intensity threshold value, feeding back second coding information corresponding to the ultraviolet light detector to judge that the light source system has a fault; and if the second illumination information exceeds a second intensity threshold value, feeding back first coding information corresponding to the visible light detector to judge that the wavelength conversion head has a fault.
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