CN212380070U - LED display screen with controllable brightness - Google Patents
LED display screen with controllable brightness Download PDFInfo
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- CN212380070U CN212380070U CN202020917658.XU CN202020917658U CN212380070U CN 212380070 U CN212380070 U CN 212380070U CN 202020917658 U CN202020917658 U CN 202020917658U CN 212380070 U CN212380070 U CN 212380070U
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- display screen
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Abstract
The utility model relates to a display device's technical field especially relates to a controllable LED display screen of luminance, and it includes fuselage and screen, the screen mounting is in one side of fuselage, the installing frame is installed to the screen periphery, the screen includes backlight unit, its characterized in that: the screen surface covers has the protecting film, and above-mentioned protecting film is including blue light filter layer and the polarisation filtration membrane that the complex formed. The utility model discloses have the blue light and the stray light's of control screen outgoing effect, can reduce the injury of blue light to people's eye, promote the reading experience of people when browsing the screen.
Description
Technical Field
The utility model belongs to the technical field of display device's technique and specifically relates to a controllable LED display screen of luminance is related to.
Background
At present, a display screen belongs to input and output equipment, and is a display tool for displaying a certain electronic file on the screen through specific transmission equipment and then reflecting the electronic file to human eyes. In the great place of flow of people, like in the elevator, all can set up the display screen, broadcast advertisement in the display screen, when people take in the elevator, can watch the advertisement of broadcast in the display screen to improve the effect of publicity.
However, the blue light hazard in LED screens does not vary a little. Recent studies published by 17.10.2019, scientists at the department of integrated biology at oregon state university, usa, have indicated that drosophila was the subject of the study and revealed on a molecular level the effect of blue light on the brain, which is believed to accelerate aging, impair lifespan, cause cerebral neurodegeneration, damage retinal cells, and also have an effect on motor ability. Therefore, the electronic products with LED display screens are also accompanied by the hazards of blue light. Especially, in the last 10 years of the gradual popularization of mobile phones and intelligent devices, many people develop a habit of seeing the LED screen for a long time from morning to evening. There is a high likelihood of health risks behind these behaviors.
Therefore, improvements to the above-described solutions are needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a controllable LED display screen of luminance has the blue light and the stray light effect of control screen outgoing, can reduce the injury of blue light to people's eye, promotes reading of people when browsing the screen and experiences.
The utility model aims at realizing through the following technical scheme:
the utility model provides a controllable LED display screen of luminance, includes fuselage and screen, the screen mounting is in one side of fuselage, the installing frame is installed to the screen periphery, the screen includes backlight unit, the screen surface covering has the protecting film, and above-mentioned protecting film is including compound blue light filter layer and the polarisation filtration membrane that forms.
By adopting the technical scheme, the backlight module is one of the key components of the LED display, and the backlight module has the function of supplying sufficient light sources with uniform brightness and distribution, so that the LED display screen can normally display images; the machine body is used for installing a screen, and the screen is used for displaying image information and providing image-text content; the mounting frame is arranged on the periphery of the screen and used for protecting the screen; the blue light filter layer of the protective film can block and absorb part of blue light, and the blue light is blocked from passing through the protective film, so that the blue light is prevented; the polarized light filtering film can filter out partial stray light, and the stray light entering human eyes is reduced, so that the human eyes are protected.
The present invention may be further configured in a preferred embodiment as: the blue light filter layer is a glass or resin lens with the absorption wavelength of 493-576 nm.
By adopting the technical scheme, the 493-576 nm light is part of blue-violet light, green light, yellow light and red light, can filter ultraviolet light and infrared light, and reduces the harm of invisible light to human eyes.
The present invention may be further configured in a preferred embodiment as: the protective film still includes the wearing layer, the wearing layer sets up the one side that deviates from the screen at the protective film, the wearing layer includes grease proofing dirt strengthening layer and wear-resisting polarisation layer, wear-resisting polarisation layer sets up between grease proofing dirt strengthening layer and polarisation filtration membrane.
By adopting the technical scheme, the wear-resistant layer can play a role in preventing scratching, the scratching on the surface of the screen is reduced, and the experience of watching the screen is improved; the oil-stain-proof strengthening layer can play a role in oil stain resistance, and fingerprints left on a screen when a person touches the screen are reduced, so that the surface of the protective film is kept clean; on one hand, the wear-resistant polarizing layer can play a role in filtering stray light, so that the content displayed on the screen is clearer, and meanwhile, the damage of the stray light of the screen to human eyes is reduced.
The present invention may be further configured in a preferred embodiment as: and a diffusion layer is also arranged on one side of the protective film, which is far away from the screen.
By adopting the technical scheme, the surface of the diffusion layer is rough, so that the reflection of light with higher brightness formed by a stronger light source on the protective film can be reduced, and the display of the screen can be clearer.
The present invention may be further configured in a preferred embodiment as: the protective film and the screen are fixedly bonded through the adhesive coating.
Through adopting above-mentioned technical scheme, through the protective action of adhesive coating between with screen surface and protective film, reduce the vestige of bonding, consequently the experience that can the screen read feels.
The present invention may be further configured in a preferred embodiment as: the screen is electrically connected with a photosensitive assembly used for detecting ambient light and a control assembly, and the control assembly is electrically connected with the backlight module of the screen.
By adopting the technical scheme, the photosensitive assembly can detect the brightness of the surrounding environment and transmit the detected brightness to the control assembly, the control assembly regulates and controls the brightness of the screen, and when the brightness of the surrounding environment is higher, the control assembly also regulates the brightness of the screen to be higher, so that reading is clearer; when the brightness of the surrounding environment is low, the control component also adjusts the brightness of the screen to be low, and the contrast value of the brightness of the screen and the brightness of the surrounding environment is reduced, so that the stimulation to human eyes is reduced.
The present invention may be further configured in a preferred embodiment as: the control assembly comprises a brightness value storage module, a brightness adjusting module, a pulse signal generator and a brightness value comparison module, the signal output ends of the photosensitive assembly, the brightness value storage module and the pulse signal generator are respectively connected with the signal input end of the brightness value comparison module, and the signal output end of the brightness value comparison module is connected with the signal input end of the brightness adjusting module; the brightness adjusting module is electrically connected with the backlight module of the display screen.
By adopting the technical scheme, the brightness value storage module is used for storing the preset brightness value used by the brightness value comparison module; the brightness adjusting module is used for controlling a backlight module of the liquid crystal module connected with the brightness adjusting module according to the brightness contrast value output by the brightness value contrast module so as to adjust the brightness of the screen of the mobile phone; the pulse signal generator is used for emitting pulse signals and controlling the brightness value comparison module to collect the brightness value from the photosensitive assembly and generate the frequency of the brightness comparison value; the brightness value comparison module is used for collecting brightness values from the photosensitive assembly at the frequency controlled by the pulse signal generator, comparing the brightness values with preset brightness values in the brightness value storage module, and finally outputting brightness comparison values to the brightness adjustment module.
The present invention may be further configured in a preferred embodiment as: the photosensitive assembly is an ambient light sensor.
By adopting the technical scheme, the ambient light sensor can sense the ambient light condition, and inform the control assembly of automatically adjusting the backlight brightness of the display, so that the power consumption of screen display is reduced, and the reading experience of people is promoted.
The present invention may be further configured in a preferred embodiment as: the control assembly further comprises a local time acquisition module for acquiring time to control the screen to be turned off within a specified time period, and the local time acquisition module is electrically connected with the brightness adjustment module.
By adopting the technical scheme, the local time acquisition module transmits the time information to the controller, and the controller controls the display screen according to the time information, so that the display screen stops working at night, and the consumption of electric energy is reduced.
To sum up, the utility model discloses a following at least one useful technological effect:
a layer of protective film is pasted on the surface of the screen, and has the functions of filtering blue light and stray light;
the backlight module of the screen is connected with the photosensitive assembly and the control assembly, and can adjust the brightness of the screen according to the change of the ambient brightness, reduce the contrast value of the brightness of the screen and the ambient brightness, and improve the comfort of watching the screen by human eyes;
the outermost layer of protective film is provided with the diffusion layer, can reduce the reflection of light of screen for the reading of screen is more clear.
Drawings
Fig. 1 is a schematic view of an overall structure of an LED display screen with controllable brightness according to an embodiment of the present invention;
FIG. 2 is a schematic view of a connection relationship between a protective film and a screen according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a module for adjusting screen brightness according to ambient brightness according to an embodiment of the present invention.
Reference numerals: 1. a body; 11. installing a frame; 2. a screen; 21. a backlight module; 3. a protective film; 31. bonding the coating; 32. a blue light filter layer; 33. a polarized light filtering film; 34. a wear layer; 341. a wear-resistant polarizing layer; 342. an oil-stain-resistant strengthening layer; 35. a diffusion layer; 4. a photosensitive assembly; 5. a control component; 51. a brightness value storage module; 52. a brightness adjustment module; 53. a pulse signal generator; 54. a brightness value comparison module; 6. and a local time acquisition module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1 and 2, the LED display screen with controllable brightness comprises a body 1 and a screen 2, wherein the screen 2 is installed on one side of the body 1, an installation frame 11 is installed on the periphery of the screen 2, and the installation frame 11 is integrally connected with the body 1. The screen 2 includes a backlight module 21, and the backlight module 21 is a light emitting component of the LED display screen, and the backlight module 21 is a prior art, so that the detailed description thereof is omitted in this embodiment. The surface of the screen 2 is covered with a protective film 3, and the protective film 3 comprises a blue light filtering layer 32 and a polarization filtering film 33 which are compounded.
Specifically, the blue light filter layer 32 is a glass or resin lens with an absorption wavelength of 493-576 nm. The light with the wavelength of 493-576 nm covers part of blue-violet light, part of red light and visible light between the blue-violet light and the red light, and electromagnetic waves with the wavelength lower than or higher than that of the visible light are filtered, so that ultraviolet light and infrared light cannot pass through the blue light filter layer 32, and the harm of invisible light to human eyes can be reduced. The polarizing filter film 33 is a polarizing plate, and can filter stray light, and thus can reduce the entry of stray light into human eyes, which is beneficial to human health. In the present embodiment, the blue light filter layer 32 faces the screen 2, and the polarization filter film 33 is disposed away from the screen 2.
Further, the protective film 3 further comprises an abrasion-resistant layer 34, and the abrasion-resistant layer 34 is compounded on the side, facing away from the screen 2, of the polarization filter film 33. The abrasion-resistant layer 34 includes an oil contamination prevention reinforcing layer 342 and an abrasion-resistant polarizing layer 341, and the abrasion-resistant polarizing layer 341 is combined between the oil contamination prevention reinforcing layer 342 and the polarizing filter film 33. The oil-proof strengthening layer 342 can be a polytetrafluoroethylene layer or a nano silver ion layer; the wear-resistant polarizing layer 341 may be a nano silver ion layer, or a film formed by uniformly distributing nano chromium oxide powder in the process of forming a PET film with a thickness of 40-45 μm.
Furthermore, a diffusion layer 35 is compounded on one side of the protective film 3, which is away from the screen 2, the surface of the diffusion layer 35 is subjected to frosting treatment, and light irradiated on the surface of the diffusion layer 35 is absorbed and irregularly reflected, so that when human eyes watch the surface of the screen 2, the light is soft and glaring glare is not easily generated.
The protective film 3 and the screen 2 are bonded and fixed by the adhesive coating 31. The adhesive coating 31 is provided in this embodiment on the side of the blue light-filtering layer 32 facing away from the polarizing filter layer film. The adhesive coating 31 can firmly fix the screen 2 and the protective film 3, and reduce or even eliminate the fixing traces, so that the fixed appearance of the protective film 3 and the screen 2 is tidier.
The implementation principle of the embodiment is as follows: the surface paste of screen 2 is fixed with protecting film 3, protecting film 3 has one side that is close to screen 2 wants to keep away from screen 2 and has the compound bond coat 31 in proper order, blue light filter layer 32, polarisation filtration membrane 33, grease proofing dirt strengthening layer 342, wear-resisting polarisation layer 341 and diffusion layer 35, protecting film 3 has the bonding vestige few, can filter blue light and stray light's effect, still have the scratch resistance, the effect of grease proofing dirt, promote the experience of people when browsing screen 2.
Example two:
referring to fig. 3, the screen 2 is electrically connected to a photosensitive assembly 4 for detecting ambient light and a control assembly 5 for adjusting and controlling the brightness of the screen 2 according to the brightness of the environment, the photosensitive assembly 4 is electrically connected to the control assembly 5, and the control assembly 5 is electrically connected to the backlight module 21 of the screen 2.
The control component 5 comprises a brightness value storage module 51, a brightness adjustment module 52, a pulse signal generator 53 and a brightness value comparison module 54, wherein the signal output ends of the photosensitive component 4, the brightness value storage module 51 and the pulse signal generator 53 are respectively connected with the signal input end of the brightness value comparison module 54, and the signal output end of the brightness value comparison module 54 is connected with the signal input end of the brightness adjustment module 52; the brightness adjusting module 52 is electrically connected to the backlight module 21 of the display screen. The photosensitive component 4 may be an ambient light sensor or a photosensitive component. The control component 5 further comprises a local time acquisition module 6, the local time acquisition module 6 is used for acquiring time to control the screen 2 to be extinguished within a specified time period, and the local time acquisition module 6 is electrically connected with the brightness adjustment module 52.
The brightness value storage module 51 is used for storing a preset brightness value for the brightness value comparison module 54 to use; the brightness adjusting module 52 is configured to control the backlight module 21 of the liquid crystal module connected to the brightness adjusting module 54 according to the brightness contrast value output by the brightness value comparing module 54, so as to adjust the brightness of the mobile phone screen 2; the pulse signal generator 53 is configured to emit a pulse signal, and control the luminance value comparison module 54 to collect the luminance value from the photosensitive component 4 and generate the frequency of the luminance comparison value; the brightness value comparison module 54 is used for collecting the brightness value from the photosensitive component 4 at the frequency controlled by the pulse signal generator 53, comparing the collected brightness value with the preset brightness value in the brightness value storage module 51, and finally outputting the brightness comparison value to the brightness adjustment module 52.
The implementation principle of the embodiment is as follows: the brightness value comparison module 54 regularly collects the brightness value through the photosensitive module according to the frequency of the pulse signal generator 53, compares the collected brightness value with the preset brightness value of the brightness value storage module 51, and calculates a brightness comparison value; the brightness adjusting module 52 controls the backlight module 21 according to the output brightness contrast value to adjust the brightness of the LED display screen. The local time acquisition module 6 transmits the time information to the controller, and the controller controls the display screen 2 according to the time information, so that the work is stopped at night, the consumption of electric energy is reduced, and light pollution is also reduced.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a controllable LED display screen of luminance, includes fuselage (1) and screen (2), one side at fuselage (1) is installed in screen (2), installing frame (11) are installed to screen (2) periphery, screen (2) include backlight unit (21), its characterized in that: the surface of the screen (2) is covered with a protective film (3), and the protective film (3) comprises a blue light filter layer (32) and a polarized light filter membrane (33) which are compounded.
2. A brightness controllable LED display screen according to claim 1, wherein: the blue light filter layer (32) is a glass or resin lens with the absorption wavelength of 493-576 nm.
3. A brightness controllable LED display screen according to claim 2, wherein: the protective film (3) further comprises a wear-resistant layer (34), the wear-resistant layer (34) is arranged on one side, deviating from the screen (2), of the protective film (3), the wear-resistant layer (34) comprises an oil-stain-proof reinforcing layer (342) and a wear-resistant polarizing layer (341), and the wear-resistant polarizing layer (341) is arranged between the oil-stain-proof reinforcing layer (342) and the polarizing filtering membrane (33).
4. A brightness controllable LED display screen according to claim 1, wherein: and a diffusion layer (35) is further arranged on one side, deviating from the screen (2), of the protective film (3).
5. A brightness controllable LED display screen according to claim 1, wherein: the protective film (3) and the screen (2) are fixedly bonded through a bonding coating (31).
6. A brightness controllable LED display screen according to claim 1, wherein: the screen (2) is electrically connected with a photosensitive assembly (4) for detecting ambient light and a control assembly (5) for regulating and controlling the brightness of the screen (2) according to the brightness of the environment, the photosensitive assembly (4) is electrically connected with the control assembly (5), and the control assembly (5) is electrically connected with a backlight module (21) of the screen (2).
7. A brightness controllable LED display screen according to claim 6, characterized in that: the control component (5) comprises a brightness value storage module (51), a brightness adjusting module (52), a pulse signal generator (53) and a brightness value comparison module (54), signal output ends of the photosensitive component (4), the brightness value storage module (51) and the pulse signal generator (53) are respectively connected with a signal input end of the brightness value comparison module (54), and a signal output end of the brightness value comparison module (54) is connected with a signal input end of the brightness adjusting module (52); the brightness adjusting module (52) is electrically connected with a backlight module (21) of the display screen.
8. A brightness controllable LED display screen according to claim 6, characterized in that: the photosensitive assembly (4) is an ambient light sensor.
9. A brightness controllable LED display screen according to claim 6, characterized in that: the control component (5) further comprises a local time acquisition module (6) for acquiring time to control the screen (2) to be turned off within a specified time period, and the local time acquisition module (6) is electrically connected with the brightness adjusting module (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020917658.XU CN212380070U (en) | 2020-05-26 | 2020-05-26 | LED display screen with controllable brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020917658.XU CN212380070U (en) | 2020-05-26 | 2020-05-26 | LED display screen with controllable brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212380070U true CN212380070U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020917658.XU Expired - Fee Related CN212380070U (en) | 2020-05-26 | 2020-05-26 | LED display screen with controllable brightness |
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| Country | Link |
|---|---|
| CN (1) | CN212380070U (en) |
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2020
- 2020-05-26 CN CN202020917658.XU patent/CN212380070U/en not_active Expired - Fee Related
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Granted publication date: 20210119 |