CN116107119B - LED light-emitting device for display module and display module - Google Patents
LED light-emitting device for display module and display module Download PDFInfo
- Publication number
- CN116107119B CN116107119B CN202310388449.9A CN202310388449A CN116107119B CN 116107119 B CN116107119 B CN 116107119B CN 202310388449 A CN202310388449 A CN 202310388449A CN 116107119 B CN116107119 B CN 116107119B
- Authority
- CN
- China
- Prior art keywords
- air
- air chamber
- communicated
- display module
- base film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G02F1/133628—Illuminating devices with cooling means
-
- 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
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Abstract
The invention discloses an LED light-emitting device for a display module and the display module, wherein the LED light-emitting device for the display module comprises a rear shell, an air pump, a backlight source component, a diffusion plate and a liquid crystal panel; the backlight source assembly comprises a substrate, wherein the substrate is provided with an LED light emitting device; the LED light-emitting device comprises an outer cover and a reflecting cover, wherein a first air chamber, a second air chamber, a third air chamber and a fourth air chamber are formed between the reflecting cover and the outer cover, the second air chamber is communicated with the third air chamber, and the third air chamber is communicated with the fourth air chamber; the first exhaust port is communicated with the exhaust passage, and the first air inlet is communicated with the air inlet passage; the reflecting cover is provided with a blue light LED, the reflecting cover is provided with an elastic base film with an annular corrugated structure, the elastic base film is provided with a quantum dot material coating, an air cavity is formed between the elastic base film and the reflecting cover, the air cavity is communicated with a fourth air chamber and a first air chamber, and the elastic base film is provided with a light sensor; the invention realizes air flow cooling and solves the problem that white light is blue after long-time use.
Description
Technical Field
The invention relates to the technical field of display, in particular to an LED light emitting device for a display module and the display module.
Background
In the prior art, the Chinese patent publication No. 2015139681. X discloses an LED light emitting device for a display module and a display module, which are characterized in that a reflective filter layer is arranged in front of a quantum dot film, and excessive blue light transmitted through the quantum dot film is reflected to quantum dots by the reflective filter layer, so that the quantum dots are excited to generate stronger complementary color light, and the problem of blue light bias caused by excessive blue light is solved.
However, due to the poor stability of the current quantum dot material, the photoluminescence efficiency (namely the ratio of the emergent light intensity to the incident light intensity) of the current quantum dot material is obviously reduced along with the rise of the temperature; with the increase of the working time of the blue light LED light-emitting device, the temperature in the light-emitting device rises, and the intensity of complementary color light emitted by the stimulated quantum dots decreases, so that the white light obtained after mixing still has the blue-biasing problem.
Disclosure of Invention
The invention aims to overcome the defects and provide an LED light-emitting device for a display module and the display module.
In order to achieve the above object, the present invention is specifically as follows:
the LED light-emitting device for the display module comprises an outer cover, wherein a reflecting cover is fixed in the outer cover, a first air chamber, a second air chamber, a third air chamber and a fourth air chamber which are arranged from inside to outside are formed between the reflecting cover and the outer cover, the first air chamber is provided with a first air outlet, the second air chamber is provided with a first air inlet, the second air chamber is communicated with the third air chamber, and the third air chamber is communicated with the fourth air chamber;
the inner bottom of the reflecting cover is provided with a blue light LED, the blue light LED is provided with a concave lens for refracting blue light emitted by the blue light LED onto the inner wall of the reflecting cover, the opening position of the reflecting cover is provided with an elastic base film with an annular corrugated structure, quantum dot material coatings are arranged on two side walls of a peak of the elastic base film along the circumferential direction, an air cavity is formed between the elastic base film and the reflecting cover, the top of the air cavity is communicated with a fourth air chamber, the bottom of the air cavity is communicated with a first air chamber, and the center of the top of the elastic base film is provided with a light sensor for monitoring mixed white light.
The invention further provides a first buffer air bag arranged in the second air chamber.
The invention further provides a second buffer air bag arranged in the third air chamber.
The invention further discloses a proportional valve for adjusting the flow of air intake and exhaust.
The proportional valve comprises a valve seat, a valve plate, a spring and an electromagnet, wherein the valve seat is provided with a second air inlet communicated with a first air inlet and a second air outlet communicated with a first air outlet, the valve plate is of an L-shaped structure, a cross arm of the valve plate is arranged in the valve seat in a sliding mode, wedge-shaped through holes are respectively formed in positions, corresponding to the second air inlet and the second air outlet, of the cross arm of the valve plate, the two wedge-shaped through holes are opposite in direction, two ends of the spring are connected between the valve seat and a longitudinal arm of the valve plate, the electromagnet is fixed on the valve seat, and the longitudinal arm of the valve plate is made of ferromagnetic materials.
The invention further provides that the quantum dot material coating is encapsulated in an elastic base film.
According to the invention, an annular air groove is formed in the outer periphery of the blue light LED at the inner bottom of the reflecting cover, and the annular air groove is communicated with the first air chamber.
The beneficial effects of the invention are as follows: according to the invention, the second air chamber, the third air chamber, the fourth air chamber, the air chamber and the first air chamber are arranged in the LED light-emitting device, so that an air flow cooling effect is formed in the LED light-emitting device, the blue light LED and the quantum dot material coating are cooled, and the quantum dot material coating is arranged on the elastic base film with the annular corrugated structure, so that the deformation of the elastic base film is utilized to change the included angle between the quantum dot material coating and the horizontal plane, the problem that white light is blue after long-time use is solved, and the display effect is better.
The invention also provides a display module, which comprises a rear shell, wherein an air pump and a plurality of groups of backlight source components are arranged at the inner bottom of the rear shell, a scattering plate for scattering white light is fixedly arranged in the rear shell, and a liquid crystal panel for displaying images is fixedly arranged at the top of the rear shell;
the backlight source assembly comprises a base plate, an exhaust passage and an air inlet passage are arranged on the base plate, the exhaust passage is communicated with the outside, the air inlet passage is communicated with the air pump, and a plurality of LED light emitting devices are arranged on the base plate at intervals along the length direction of the base plate; the first exhaust port is communicated with the exhaust passage, and the first air inlet is communicated with the air inlet passage.
The beneficial effects of the invention are as follows: according to the display module, the second air chamber, the third air chamber, the fourth air chamber, the air chamber and the first air chamber are arranged in the LED light-emitting device, so that an air flow cooling effect is formed in the LED light-emitting device, the blue light LED and the quantum dot material coating are cooled, the quantum dot material coating is arranged on the elastic base film with the annular corrugated structure, the deformation of the elastic base film is utilized, the included angle between the quantum dot material coating and the horizontal plane is changed, the problem that white light is blue after long-time use is solved, and the display effect is better.
Drawings
Fig. 1 is a schematic structural view of an LED light emitting device of the present invention;
fig. 2 is a schematic cross-sectional view of an LED light emitting device of the present invention;
fig. 3 is an exploded schematic view of the LED light emitting device of the present invention;
FIG. 4 is a schematic structural view of a proportional valve of the present invention;
FIG. 5 is an exploded schematic view of the proportional valve of the present invention;
FIG. 6 is an exploded view of the display module of the present invention;
reference numerals illustrate: 100. a rear housing; 200. an air pump; 300. a backlight assembly; 301. a substrate; 302. an LED light emitting device; 400. a diffusion plate; 500. a liquid crystal panel;
1. an outer cover; 2. a reflection cover; 3. blue light LEDs; 4. a concave lens; 5. an elastic base film; 51. a quantum dot material coating; 6. a light sensor; 7. a first cushion bladder; 8. a second cushion bladder; 9. a proportional valve; 91. a valve seat; 92. a valve plate; 93. a spring; 94. an electromagnet; 95. a second air inlet; 96. a second exhaust port; 97. wedge-shaped through holes;
10. a first air chamber; 20. a second air chamber; 30. a third air chamber; 40. a fourth air chamber; 50. an air chamber; 60. a first exhaust port; 70. a first air inlet.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the invention.
As shown in fig. 1 to 6, a display module of the present embodiment includes a rear housing 100, an air pump 200 and a plurality of sets of backlight assemblies 300 are installed at the inner bottom of the rear housing 100, a diffusion plate 400 for diffusing white light is fixedly installed in the rear housing 100, and a liquid crystal panel 500 for displaying images is fixedly installed at the top of the rear housing 100;
the backlight source assembly 300 comprises a substrate 301, wherein an exhaust passage and an air inlet passage are arranged on the substrate 301, the exhaust passage is communicated with the outside, the air inlet passage is communicated with the air pump 200, and a plurality of LED light emitting devices 302 are arranged on the substrate 301 at intervals along the length direction;
each LED light emitting device 302 comprises a housing 1, a reflecting cover 2 is fixed in the housing 1, a first air chamber 10, a second air chamber 20, a third air chamber 30 and a fourth air chamber 40 which are arranged from inside to outside are formed between the reflecting cover 2 and the housing 1, the first air chamber 10 is provided with a first air outlet 60, the second air chamber 20 is provided with a first air inlet 70, the second air chamber 20 is communicated with the third air chamber 30, and the third air chamber 30 is communicated with the fourth air chamber 40; the first exhaust port 60 communicates with the exhaust passage and the first intake port 70 communicates with the intake passage;
the inner bottom of the reflecting cover 2 is provided with a blue light LED3, the blue light LED3 is provided with a concave lens 4 for refracting blue light emitted by the blue light LED3 onto the inner wall of the reflecting cover 2, the opening position of the reflecting cover 2 is provided with an elastic base film 5 in an annular corrugated structure, the elastic base film 5 is made of transparent materials, two side walls of a peak of the elastic base film 5 are provided with quantum dot material coatings 51 along the circumferential direction, an air cavity 50 is formed between the elastic base film 5 and the reflecting cover 2, the top of the air cavity 50 is communicated with a fourth air chamber 40, the bottom of the air cavity 50 is communicated with a first air chamber 10, and the center of the top of the elastic base film 5 is provided with a light sensor 6 for monitoring mixed white light.
In actual use, blue light emitted by the blue LED3 is refracted by the concave lens 4 onto the reflecting surface of the reflecting cover 2, reflected by the reflecting surface of the reflecting cover 2, and emitted to the elastic base film 5, a part of the blue light irradiates on the quantum dot material coating 51 of the elastic base film 5, the quantum dot material coating 51 emits complementary color light with the color complementary to that of the blue light under the excitation of the blue light, the blue light which does not irradiate on the quantum dot material coating 51 emits through the elastic base film 5 and is mixed with the complementary color light stimulated by the quantum dot material coating 51 to form white light, and the white light is projected onto the scattering plate 400 to be scattered to form uniform parallel light and then emitted to the liquid crystal panel 500 to provide backlight for the liquid crystal panel 500;
with the increase of the working time of the display module, the temperature in the air cavity 50 is increased by the heat generated by the working of the blue light LED3, so that the temperature of the quantum dot material coating 51 is increased, the photoluminescence efficiency is reduced, the complementary color light emitted by the quantum dot material coating 51 is reduced, the amount of blue light transmitted through the elastic base film 5 is kept unchanged, the mixed white light is bluish, when the light sensor 6 detects that the white light is bluish, the external controller controls the air pump 200 to pump air into the air inlet channel of each backlight assembly 300, the air enters the second air chamber 20 of each LED light emitting device 302 through the air inlet channel and the first air inlet 70 of each LED light emitting device 302, the air enters the third air chamber 30 through the second air chamber 20, then enters the fourth air chamber 40 from the third air chamber 30, and then enters the air cavity 50 from the fourth air chamber 40, then enters the first air chamber 10 from top to bottom, and is discharged through the first air outlet 60 and the air outlet, so that the blue light LED3 and the quantum dot material coating 51 are cooled, meanwhile, the elastic base film 5 is stretched under the action of pressure change in the air chamber 50, so that the included angle between the quantum dot material coating 51 fixed on the elastic base film 5 and the plane of the blue light LED3 is reduced, the projection area of the quantum dot material coating 51 on the plane of the blue light LED3 is increased, more blue light irradiates the surface of the quantum dot material coating 51 to generate more complementary color light, and meanwhile, the quantity of the blue light transmitted through the elastic base film 5 is reduced due to shielding of the quantum dot material coating 51, so that the proportion of the blue light in the mixed white light is reduced, and the bluing degree of the mixed white light is improved.
According to the embodiment, the second air chamber 20, the third air chamber 30, the fourth air chamber 40, the air chamber 50 and the first air chamber 10 are arranged in the LED light emitting device 302, so that an air flow cooling effect is formed in the LED light emitting device 302, the blue light LED3 and the quantum dot material coating 51 are cooled, the quantum dot material coating 51 is arranged on the elastic base film 5 with an annular corrugated structure, the deformation of the elastic base film 5 is utilized, the included angle between the quantum dot material coating 51 and the plane where the blue light LED3 is located is changed, the problem that white light is blue after long-time use is solved, and the display effect is better.
As shown in fig. 2 and 3, in a display module of the present embodiment, in some embodiments, a first cushion airbag 7 is disposed in the second air chamber 20. In this embodiment, the first buffer air bag 7 is disposed in the second air chamber 20, so as to buffer the pulsating air pumped into the second air chamber 20, so that the air before entering the air chamber 50 is more stable, and the influence on the light emitting stability caused by the vibration of the elastic base film 5 due to the pulsating air is avoided.
As shown in fig. 2 and 3, in a display module of the present embodiment, in some embodiments, the second cushion airbag 8 is disposed in the third air chamber 30. In this embodiment, the second buffer air bag 8 is disposed in the third air chamber 30, so as to buffer the pulsating air pumped into the third air chamber 30, so that the air before entering the air chamber 50 is more stable, and further, the influence on the light emitting stability caused by the vibration of the elastic base film 5 due to the pulsating air is avoided.
As shown in fig. 2 and 3, in some embodiments, a proportional valve 9 for adjusting the flow of air intake and exhaust is provided at the bottom of the housing 1. According to the embodiment, the air inlet and outlet flow is regulated by setting the proportional valve 9, so that after cooling through air flow, the light sensor 6 detects white light, if the white light is still blue, the pressure in the air cavity 50 is regulated through the proportional valve 9, so that the pressure in the air cavity 50 is increased, the included angle between the quantum dot material coating 51 and the horizontal plane is further reduced, the projection area of the quantum dot material coating 51 on the horizontal plane is further increased, more blue light irradiates the surface of the quantum dot material coating 51, more complementary color light is generated, the efficiency is higher, and the response is faster.
As shown in fig. 4 and 5, in some embodiments, the proportional valve 9 includes a valve seat 91, a valve plate 92, a spring 93 and an electromagnet 94, the valve seat 91 is provided with a second air inlet 95 communicated with the first air inlet 70 and a second air outlet 96 communicated with the first air outlet 60, the valve plate 92 is in an L-shaped structure, a cross arm of the valve plate 92 is slidably arranged in the valve seat 91, wedge-shaped through holes 97 are respectively formed in positions of the cross arm of the valve plate 92 corresponding to the second air inlet 95 and the second air outlet 96, the two wedge-shaped through holes 97 are opposite in orientation, two ends of the spring 93 are connected between the valve seat 91 and a longitudinal arm of the valve plate 92, the electromagnet 94 is fixed on the valve seat 91, and the longitudinal arm of the valve plate 92 is made of ferromagnetic material. In this embodiment, the number of the springs 93 is two, and the two springs 93 are arranged side by side at intervals, so that the movement of the valve plate 92 is smoother.
Specifically, when the air pressure in the air cavity 50 needs to be adjusted, the electromagnet 94 is electrified, so that the valve plate 92 slides relative to the valve seat 91, the corresponding positions of the two wedge-shaped through holes 97 and the second air inlet 95 and the second air outlet 96 are changed, the effective flow area of the second air inlet 95 is larger than that of the second air outlet 96, and the adjustment of the air inlet and outlet flow is achieved, so that the pressure in the air cavity 50 is increased, the deformation of the elastic base film 5 is increased, more complementary color light is generated, the proportion of blue light in the mixed white light is further reduced, and the degree of blue light mixing is further improved.
In some embodiments, a quantum dot material coating 51 is encapsulated in the elastic base film 5. According to the embodiment, the quantum dot material coating 51 is encapsulated in the elastic base film 5, so that the quantum dot material coating 51 can be better protected, the reliable use of the quantum dot material coating 51 is ensured, and dust or other foreign matters and the like are prevented from being adhered to the surface of the quantum dot material coating 51.
As shown in fig. 2, in a display module of the present embodiment, in some embodiments, an annular air groove is formed in the outer periphery of the blue LED3 at the inner bottom of the reflective cover 2, and the annular air groove is in communication with the first air chamber 10. In this embodiment, the annular air groove is formed in the inner bottom of the reflecting cover 2, so that cooling air flow is formed around the blue LED3, and the cooling effect on the blue LED3 is better.
The foregoing description is only one preferred embodiment of the invention, and therefore all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are intended to be embraced therein.
Claims (8)
1. The LED light-emitting device for the display module is characterized by comprising an outer cover, wherein a reflecting cover is fixed in the outer cover, a first air chamber, a second air chamber, a third air chamber and a fourth air chamber which are arranged from inside to outside are formed between the reflecting cover and the outer cover, the first air chamber is provided with a first exhaust port, the second air chamber is provided with a first air inlet, the second air chamber is communicated with the third air chamber, and the third air chamber is communicated with the fourth air chamber;
the LED light source is characterized in that a blue light LED is arranged at the inner bottom of the reflecting cover, a concave lens for refracting blue light emitted by the blue light LED to the inner wall of the reflecting cover is arranged on the blue light LED, an elastic base film in an annular corrugated structure is arranged at the opening position of the reflecting cover, quantum dot material coatings are arranged on two side walls of a peak of the elastic base film along the circumferential direction, an air cavity is formed between the elastic base film and the reflecting cover, the top of the air cavity is communicated with a fourth air chamber, the bottom of the air cavity is communicated with a first air chamber, and a light sensor for monitoring mixed white light is arranged at the center of the top of the elastic base film;
air is pumped into the air inlet channel by an external control air pump, and passes through the air inlet channel, the first air inlet, the second air chamber, the third air chamber, the fourth air chamber, the air chamber and the first air chamber in sequence, so that the blue light LED and the quantum dot material coating are cooled, and meanwhile, the elastic base film is stretched under the pressure change effect of the air chamber.
2. The LED lighting device for a display module according to claim 1, wherein a first cushion air bag is provided in the second air chamber.
3. The LED lighting device for a display module according to claim 1, wherein a second cushion air bag is provided in the third air chamber.
4. The LED lighting device for display module of claim 1, wherein the bottom of the housing is provided with a proportional valve for adjusting the flow of air in and out.
5. The LED light-emitting device for the display module according to claim 4, wherein the proportional valve comprises a valve seat, a valve plate, springs and electromagnets, the valve seat is provided with a second air inlet communicated with the first air inlet and a second air outlet communicated with the first air outlet, the valve plate is of an L-shaped structure, a cross arm of the valve plate is slidably arranged in the valve seat in a penetrating mode, wedge-shaped through holes are respectively formed in positions, corresponding to the second air inlet and the second air outlet, of the cross arm of the valve plate, the two wedge-shaped through holes face oppositely, two ends of each spring are connected between the valve seat and a longitudinal arm of the valve plate, the electromagnets are fixed on the valve seat, and the longitudinal arm of the valve plate is made of ferromagnetic materials.
6. The LED light emitting device of claim 1, wherein the quantum dot material coating is encapsulated in an elastic base film.
7. The LED lighting device for a display module according to claim 1, wherein an annular air groove is provided in an inner bottom of the reflecting cover at an outer periphery of the blue LED, and the annular air groove is communicated with the first air chamber.
8. The display module is characterized by comprising a rear shell, wherein an air pump and a plurality of groups of backlight source assemblies are arranged at the inner bottom of the rear shell, a scattering plate for scattering white light is fixedly arranged in the rear shell, and a liquid crystal panel for displaying images is fixedly arranged at the top of the rear shell;
the backlight source assembly comprises a base plate, wherein an exhaust passage and an air inlet passage are arranged on the base plate, the exhaust passage is communicated with the outside, the air inlet passage is communicated with an air pump, and a plurality of LED light-emitting devices according to any one of claims 1 to 7 are arranged on the base plate at intervals along the length direction of the base plate; the first exhaust port is communicated with the exhaust passage, and the first air inlet is communicated with the air inlet passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310388449.9A CN116107119B (en) | 2023-04-12 | 2023-04-12 | LED light-emitting device for display module and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310388449.9A CN116107119B (en) | 2023-04-12 | 2023-04-12 | LED light-emitting device for display module and display module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116107119A CN116107119A (en) | 2023-05-12 |
| CN116107119B true CN116107119B (en) | 2023-06-16 |
Family
ID=86260122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310388449.9A Active CN116107119B (en) | 2023-04-12 | 2023-04-12 | LED light-emitting device for display module and display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116107119B (en) |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286454A (en) * | 2000-01-01 | 2000-10-13 | Sanken Electric Co Ltd | Semiconductor planar light source |
| JP3900848B2 (en) * | 2001-03-23 | 2007-04-04 | シチズン電子株式会社 | Light emitting diode |
| JP2004071771A (en) * | 2002-08-05 | 2004-03-04 | Okaya Electric Ind Co Ltd | Light emitting diode |
| CN100541845C (en) * | 2003-07-09 | 2009-09-16 | 日亚化学工业株式会社 | Luminescent device and lighting device |
| US7560820B2 (en) * | 2004-04-15 | 2009-07-14 | Saes Getters S.P.A. | Integrated getter for vacuum or inert gas packaged LEDs |
| JP4726456B2 (en) * | 2004-09-28 | 2011-07-20 | 京セラ株式会社 | Liquid crystal display |
| JP4888280B2 (en) * | 2007-08-28 | 2012-02-29 | パナソニック電工株式会社 | Light emitting device |
| CN102315180A (en) * | 2010-07-08 | 2012-01-11 | 绿种子能源科技股份有限公司 | Electronic device with heat radiating function and heat radiating module |
| DE102010045316A1 (en) * | 2010-09-14 | 2012-03-15 | Osram Opto Semiconductors Gmbh | Radiation-emitting component |
| WO2013159664A1 (en) * | 2012-04-26 | 2013-10-31 | Qian Zhiqiang | White light led light-emitting device and method for preparing thereof |
| CN204114666U (en) * | 2014-10-14 | 2015-01-21 | 东莞市闻誉实业有限公司 | Led |
| CN104748036B (en) * | 2015-03-20 | 2016-11-16 | 盐城工学院 | Gas heat dissipation type energy-efficient automobile headlight and preparation method thereof |
| CN204905249U (en) * | 2015-08-06 | 2015-12-23 | 永林电子有限公司 | High color rendering index's COB light source |
| KR101709280B1 (en) * | 2015-09-21 | 2017-02-23 | 주식회사 루멘스 | Light emitting device package and backlight unit |
| TWM530379U (en) * | 2016-02-19 | 2016-10-11 | Shao-Hui Zhuo | LED ceiling light lampshade spectrum expansion structure |
| US10276761B2 (en) * | 2017-06-06 | 2019-04-30 | Industrial Technology Research Institute | Photoelectric device package |
| CN207719232U (en) * | 2017-12-15 | 2018-08-10 | 厦门科煜光电有限公司 | A kind of fluorescent powder coating LED |
| CN108922881B (en) * | 2018-06-29 | 2020-07-17 | 江苏绿色照明工程有限公司 | L ED lamp light-emitting module connecting structure and mounting method thereof |
| KR102039029B1 (en) * | 2018-07-13 | 2019-10-31 | 연세대학교 산학협력단 | Pressure-driven light emitting device and method of fabricating the same |
| US10950773B1 (en) * | 2019-12-02 | 2021-03-16 | Bruce H Baretz | Light emitting diode devices |
| CN115717699A (en) * | 2022-11-21 | 2023-02-28 | 合肥一点园智能设备有限公司 | Prevent LED light lighting device that generates heat |
-
2023
- 2023-04-12 CN CN202310388449.9A patent/CN116107119B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN116107119A (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8640368B2 (en) | Light source device, lighting device, and display device | |
| US6313892B2 (en) | Light source utilizing reflective cavity having sloped side surfaces | |
| US6496237B1 (en) | Light source utilizing diffusive reflective cavity having two oppositely inclined surfaces | |
| EP0722576B1 (en) | Light source for backlighting | |
| JP4959491B2 (en) | LED package and backlight assembly for liquid crystal display device provided with the same | |
| CN1841159B (en) | Light-emitting apparatus having a plurality of overlapping panels forming recesses from which light is emitted | |
| KR101043500B1 (en) | Surface light source device and light source unit | |
| US20110317096A1 (en) | Planar lighting device and liquid-crystal display device with the same | |
| JP4858241B2 (en) | Lighting unit and lighting device | |
| JP2006031941A (en) | Planar light source unit | |
| JP2004520695A (en) | Lighting system and display device | |
| CN105444044A (en) | LED luminescent device, backlight unit and display panel | |
| KR20120046454A (en) | Light emitting device package, backlight unit including the same and lighting device | |
| CN110703497A (en) | Backlight device of surface light source and display apparatus | |
| US10473977B2 (en) | Surface light source apparatus comprising a light-distribution control element having a diffusion part and liquid crystal display having the same | |
| US9753213B2 (en) | Planar light source device and liquid crystal display apparatus | |
| CN116107119B (en) | LED light-emitting device for display module and display module | |
| TWI410711B (en) | Back light module and liquid crystal display having the same | |
| JP2001036151A (en) | Surface emitting device | |
| JPH1153920A (en) | Light-emitting device and led light emitter | |
| EP3401719A1 (en) | Diffusing lens and light emitting device using the same | |
| JP2002063804A (en) | Led planar illumination device for glass-art panel | |
| WO2019179426A1 (en) | Light source module and display device | |
| JP5052298B2 (en) | Planar light source device and display device | |
| CN209993262U (en) | Quantum dot backlight module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |