CN114283702A - Micro-interval LED display screen module based on RGB (Red, Green, blue) split array - Google Patents
Micro-interval LED display screen module based on RGB (Red, Green, blue) split array Download PDFInfo
- Publication number
- CN114283702A CN114283702A CN202111403109.6A CN202111403109A CN114283702A CN 114283702 A CN114283702 A CN 114283702A CN 202111403109 A CN202111403109 A CN 202111403109A CN 114283702 A CN114283702 A CN 114283702A
- Authority
- CN
- China
- Prior art keywords
- light
- light valve
- array
- display screen
- valve array
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 239000011324 bead Substances 0.000 claims abstract description 21
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 15
- 239000003086 colorant Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The invention relates to a micro-space LED display screen module based on an RGB (red, green and blue) split array, belonging to the technical field of LED display screens. The light source is R, G, B high-power single-color LED lamp beads, and the light emitted by the light source is projected to the rear panel after passing through the corresponding light valve array; the light valve array can control the output intensity of a light path, and is divided into three spatially independent areas which respectively correspond to R, G, B three single-color LED lamp beads; each output pixel point on the front panel is connected with R, G, B sub-pixel points on the rear panel for light transmission by using an optical fiber bundle formed by three optical fibers; the control panel is used for controlling the single-color LED lamp beads and the light valve array; a lampshade is arranged between the light source and the light valve array, and the lampshade enables the light to be uniformly gathered on the input surface of the light valve array. The LED single lamp with high power R, G, B is used in the invention, and can be independently dimmed, and the dynamic energy consumption is low. The present invention does not require additional fittings.
Description
Technical Field
The invention relates to a micro-space LED display screen module based on an RGB (red, green and blue) split array, belonging to the technical field of LED display screens.
Background
The current display technologies are mainly LED screens, OLED screens, LCD screens, projection screens (DLP, LCD, etc.).
The projection screen (or the projection splicing screen) needs to project light on a white background, has low brightness and poor contrast and is suitable for darker environments.
The LCD screen has high brightness, black background and high contrast, but the manufacturing cost per unit area rises sharply with the increase of the size of a single screen, and is only suitable for medium and small screens. The LCD screen is spliced into a large screen, because the LCD screen takes glass as a carrier and a TFT (thin film transistor) manufacturing process is adopted, a display area is required to be smaller than a glass carrier, and a required structural outer frame cannot be visually spliced seamlessly. Moreover, the LCD screen adopts a color filter film, so that the effective utilization rate of light is low and the energy efficiency is low.
The OLED screen is actively luminous, the effective utilization rate of light is high, the substrate can be made of flexible materials, but the OLED screen is also based on a TFT (thin film transistor) process and is only suitable for medium and small screens.
The LED screen is formed by assembling a large number of LED lamp beads with low power on a PCB in an array form to form a module, and then splicing the module into a large screen, so that the seamless splicing on the vision is realized. As the pixel pitch continues to shrink below 2mm, the size limitation of the LED bead package housing becomes a bottleneck in the conventional single lamp assembly manufacturing process. The device usage per unit area is proportional to the square of the reciprocal pixel pitch, and millions of devices per square meter degrade many performance indicators quickly. The method comprises the following steps: 1. the manufacturing scale is increased sharply, and the production line investment is increased sharply; 2. the mean time without failure is sharply reduced, and the reliability is seriously deteriorated; 3. the smaller the LED is, the poorer the protection capability of the LED and the shell of the module is, the more easily the LED is damaged, and the manufacturing, transporting, installing and maintaining cost is greatly increased; 4. the LED module is adopted and is lighted the scanning drive line by line, utilizes the persistence of vision principle to show stable image, and along with the increase of LED's density, the PCB area that corresponds reduces, if drive circuit equal proportion increases, then PCB is difficult to hold, so adopt higher frequency scanning to reduce drive circuit's quantity, but brought bigger electromagnetic radiation, the electromagnetic pollution aggravates.
The new technical routes of the LED mainly include COB, MiniLED and MicroLED at present.
COB (chip On Board), namely packaging a plurality of LED bare chips On a substrate, then packaging into a device, and assembling a display screen by using the COB device to reduce the manufacturing scale of the assembling link. However, other defects of the traditional small-spacing LED screen cannot be solved, and the defects of surface reflection, poor bottom color consistency, reduced contrast, difficulty in single-point repair and the like are newly generated. Furthermore, a bottleneck is present even when the pixel pitch is 1mm or less.
The MiniLED is formed by arranging LED chips at a smaller interval (50 um-200 um) on a glass substrate in an array manner, is attached to the back of glass of an LCD display screen and serves as a backlight source, so that regional dimming can be realized, the backlight of the LCD is more uniform, and the dynamic energy consumption of the LCD screen can be reduced. At present, the method is not applied to the field of LED large screen display.
The micro LED is an LED chip smaller than 50um, and is one of the current research hotspots, but the necessary technologies such as huge transfer and the like are not broken through. The micro LED can be used for manufacturing small and medium-sized display screens, and a plurality of problems exist in manufacturing large-screen display screens.
Disclosure of Invention
The invention aims to provide an LED display screen module with a micro spacing based on an RGB (red, green and blue) split array.
In order to achieve the purpose, the invention adopts the technical scheme that:
a small-interval LED display screen module based on RGB split array, the light source is R, G, B high-power monochromatic LED lamp beads, the light that the light source launches is projected on the back panel after passing through the corresponding light valve array; the light valve array can control the output intensity of a light path, and is divided into three spatially independent areas which respectively correspond to R, G, B three single-color LED lamp beads; the light valve is not provided with a color filter; each output pixel point on the front panel is connected with R, G, B sub-pixel points on the rear panel for light transmission by using an optical fiber bundle formed by three optical fibers; the control panel is used for controlling the single-color LED lamp beads and the light valve array; a lampshade is arranged between the light source and the light valve array, and the lampshade enables the light to be uniformly gathered on the input surface of the light valve array.
The technical scheme of the invention is further improved as follows: each area of the light valve array comprises M rows by N columns of light valves; the light valve is not provided with a color filter.
The technical scheme of the invention is further improved as follows: the rear panel, the optical fiber array and the front panel are light guide components; the front panel is larger in size than the rear panel.
The technical scheme of the invention is further improved as follows: each optical fiber bundle is provided with 3 optical fibers, each optical fiber is respectively communicated with one output light path in the three light valve partitions, and each optical fiber bundle is connected with one output pixel point of the front panel after the 3 light paths are converged.
The technical scheme of the invention is further improved as follows: monochromatic LED lamp pearl, lamp shade, light valve array all install on the light guide part, set up the structure of assembling that is used for the concatenation installation between the module on the light guide part.
The technical scheme of the invention is further improved as follows: the light valve is a liquid crystal light valve.
Due to the adoption of the technical scheme, the invention has the following technical effects:
by using the high-power R, G, B LED single lamp, the invention can greatly reduce the using amount of the LED lamp beads and the driving circuit, and the reduction range reaches several orders of magnitude, thereby reducing the manufacturing scale, reducing the production line investment and improving the production efficiency. Due to the fact that the number of the light sources is greatly reduced, the probability of failure of the display screen is remarkably reduced, the mean time without failure is prolonged, and reliability is improved.
According to the LED single lamp provided by R, G, B, each single lamp can be independently dimmed, and dynamic energy consumption is further reduced.
The invention sets the light valve array, controls the light path by the light valve array without controlling large current, reduces electromagnetic radiation and is more environment-friendly.
The light valve is not provided with a color filter, the effective light utilization rate and the energy efficiency are 3 times of those of a liquid crystal screen, and the energy is saved.
The number of the light source LEDs is reduced, so that the size of an electric part can be reduced, the light source LEDs can be packaged in a closed shell, the protection level of the shell is improved, and the light source LED packaging structure is suitable for a more severe application environment.
The light valve array is output and projected onto the front panel of the display screen by the rear panel of the light guide device through the optical fiber, so that the pixel distance is enlarged, the structural strength is increased, and the collision damage resistance is enhanced. The display screen module can prevent dust, water, condensation and salt mist corrosion.
The LED single lamp with high power R, G, B is used in the invention, and can be independently dimmed, and the dynamic energy consumption is low. The present invention does not require additional accessories such as precision grating lenses.
Drawings
FIG. 1 is a schematic view of the distribution of components of the present invention.
The LED light source comprises 1 monochromatic LED lamp beads, 2 lamp shades, 3 light valve arrays, 4 rear panels, 5 optical fibers, 6 front panels.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention relates to a micro-space LED display screen module based on an RGB (red, green and blue) split array, which is mainly designed in the way that 3 high-power R, G, B LED single lamps are used as light sources, an independent area of a light valve array is arranged for each LED single lamp, and the color of an output pixel is adjusted by using a light valve. The light valve is used for controlling the light path to be closed and the intensity of the light to pass through, and the light valve uses a liquid crystal light valve or other light valves. The light valve is not provided with a filter.
The light source of the invention is R, G, B high-power monochromatic LED lamp beads 1, and the light emitted by the light source is projected on the rear panel 4 after passing through the corresponding light valve array 3. Typically, a lamp housing 2 is provided between the light source and the light valve array 3 to uniformly concentrate the light onto the input surface of the light valve array 3.
The light valve array 3 of the present invention is provided with a plurality of light valves, light passes through each light valve to form a light path, and each light valve can control the output intensity of the light path. The light valve array 3 is divided into three spatially independent areas, which respectively correspond to R, G, B three single-color LED lamp beads 1. Each light valve in the light valve array 3 corresponding to the red LED lamp beads outputs red light, each light valve in the light valve array 3 corresponding to the green LED lamp beads outputs green light, and each light valve in the light valve array 3 corresponding to the blue LED lamp beads outputs blue light. The light after passing through the light valve is projected on the rear panel 4, the light valve adjusts the output intensity of the light path to form monochromatic light with different intensities, then each output pixel point on the front panel 6 is connected with R, G, B sub-pixel points on the rear panel 4 by using an optical fiber bundle formed by three optical fibers 5 to transmit light, and different colors are mixed in the pixels on the front panel 6.
The invention also provides a control panel, and the light intensity of the monochromatic LED lamp beads 1 and the opening and closing intensity of each light valve in the light valve array 3 are adjusted through the control panel.
The invention conducts light by using the optical fiber bundle, different areas on the rear panel correspond to different monochromatic colors, and each pixel point is monochromatic light. Each optical fiber bundle is provided with 3 optical fibers 5, each optical fiber is respectively communicated with one output light path in three light valve partitions, the primary colors of three pixels are input into the 3 light paths, and each optical fiber bundle is connected with one output pixel point of the front panel 6 to output different colors. In a specific implementation of the invention, each area of the light valve array 3 comprises M rows by N columns of light valves.
In a specific embodiment of the present invention, a rear panel 4, an optical fiber array formed by a plurality of optical fibers 5, and a front panel 6 are provided to form a light guide member. The front panel 6 is larger in size than the rear panel 4.
The single-color LED lamp bead 1, the lampshade 2 and the light valve array 3 are all arranged on the light guide component, the light guide component is provided with an assembling structure for assembling and installing modules, and the assembling structure can be an assembling structure of the existing LED screen.
Static energy efficiency, as used herein, refers to the percentage of output energy (light energy) to input energy (electrical or light energy), independent of the displayed image; the dynamic power consumption is related to the color of the displayed image, the energy consumption is the largest when the image is displayed in full white, the energy consumption is the smallest when the image is displayed in full black, and the dynamic power consumption can be reduced by regional dimming. The display screen module can carry out R, G, B independent area dimming, and can reduce the dynamic energy consumption of the display screen to 30% of the existing LCD screen. Compared with the prior art, the static energy efficiency is improved by 3 times.
The cost of one high-power LED in the technical field is far less than the sum of the cost of a large number of low-power LEDs with the same total power. If a large number of low-power LEDs are used, the display of the display screen will be adversely affected if only one of the low-power LEDs fails. According to the invention, three R, G, B LED single lamps are used as light sources, so that the number of LED lamp beads is greatly reduced, the production cost and the production difficulty are reduced, the mean time to failure of the display screen is greatly prolonged, and the reliability is improved.
The invention uses the LED single lamp with high power R, G, B as the light source of the display screen, and does not need to use a color filter, so that the light rays are distinguished from the light source. The light valve array is arranged, the light valve array is partitioned corresponding to three R, G, B LED single lamps, intensity adjustment of each light path in the partition is achieved, the output light of the sub-pixel points in the three partitions is transmitted to the front panel through the optical fiber bundle comprising three optical fibers, and image display of the display screen is achieved. The light valve can control the output intensity of the sub-optical path to realize color adjustment. The invention can greatly reduce the manufacturing cost of the LED display screen with the micro spacing, improve the mean time between failures and improve the reliability; meanwhile, the energy efficiency is 3 times of that of the liquid crystal display, and the energy-saving effect is better.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a fine pitch LED display screen module based on RGB divides and puts array which characterized in that: the light source is R, G, B high-power single-color LED lamp beads (1), and light emitted by the light source passes through the corresponding light valve array (3) and then is projected onto the rear panel (4); the light valve array (3) can control the output intensity of a light path, and the light valve array (3) is divided into three spatially independent areas which respectively correspond to R, G, B single-color LED lamp beads (1); each output pixel point on the front panel (6) is connected with R, G, B sub pixel points on the rear panel (4) by using an optical fiber bundle formed by three optical fibers (5) to transmit light; the LED lamp also comprises a control panel, a light valve array and a light source, wherein the control panel is used for controlling the single-color LED lamp beads (1) and the light valve array (3); a lampshade (2) which enables the light to be uniformly gathered on the input surface of the light valve array (3) is arranged between the light source and the light valve array (3).
2. The fine pitch LED display screen module based on RGB (red, green, blue) split array as claimed in claim 1, wherein: each area of the light valve array (3) comprises M rows by N columns of light valves; the light valve is not provided with a color filter.
3. The fine pitch LED display screen module based on RGB (red, green, blue) split array as claimed in claim 2, wherein: the rear panel (4), the optical fiber (5) and the front panel (6) are light guide components; the front panel (6) is larger in size than the rear panel (4).
4. The fine pitch LED display screen module based on RGB split array as claimed in claim 3, wherein: each optical fiber bundle is provided with 3 optical fibers (5), each optical fiber (5) is respectively communicated with one output light path in the three light valve partitions, and each optical fiber bundle is connected with one output pixel point of the front panel after the 3 light paths are converged.
5. The fine pitch LED display screen module based on RGB (red, green, blue) split array as claimed in claim 4, wherein: monochromatic LED lamp pearl (1), lamp shade (2), light valve array (3) all install on leading optical component, lead optical component and go up the structure of assembling that sets up the concatenation installation that is used for between the module.
6. The fine-pitch LED display screen module based on the RGB split array as claimed in any one of claims 1 to 5, wherein: the light valve is a liquid crystal light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403109.6A CN114283702A (en) | 2021-11-24 | 2021-11-24 | Micro-interval LED display screen module based on RGB (Red, Green, blue) split array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111403109.6A CN114283702A (en) | 2021-11-24 | 2021-11-24 | Micro-interval LED display screen module based on RGB (Red, Green, blue) split array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114283702A true CN114283702A (en) | 2022-04-05 |
Family
ID=80869728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111403109.6A Pending CN114283702A (en) | 2021-11-24 | 2021-11-24 | Micro-interval LED display screen module based on RGB (Red, Green, blue) split array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114283702A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840138A (en) * | 2010-03-30 | 2010-09-22 | 广东威创视讯科技股份有限公司 | Spliced projection display device |
| CN102063844A (en) * | 2010-09-26 | 2011-05-18 | 张秋霞 | Stackable LED optical fiber display device |
| CN104637414A (en) * | 2015-03-05 | 2015-05-20 | 矽照光电（厦门）有限公司 | LED display |
| CN205750121U (en) * | 2016-05-12 | 2016-11-30 | 泉州市泉港区正凯装潢设计有限公司 | Use the high brightness of array of source illumination, high uniformity image display |
| CN108447407A (en) * | 2018-02-09 | 2018-08-24 | 武汉华星光电技术有限公司 | A kind of micromeritics LED display panel |
| CN110678692A (en) * | 2017-05-14 | 2020-01-10 | 镭亚股份有限公司 | Multi-view backlights, displays, and methods employing active emitters |
-
2021
- 2021-11-24 CN CN202111403109.6A patent/CN114283702A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840138A (en) * | 2010-03-30 | 2010-09-22 | 广东威创视讯科技股份有限公司 | Spliced projection display device |
| CN102063844A (en) * | 2010-09-26 | 2011-05-18 | 张秋霞 | Stackable LED optical fiber display device |
| CN104637414A (en) * | 2015-03-05 | 2015-05-20 | 矽照光电（厦门）有限公司 | LED display |
| CN205750121U (en) * | 2016-05-12 | 2016-11-30 | 泉州市泉港区正凯装潢设计有限公司 | Use the high brightness of array of source illumination, high uniformity image display |
| CN110678692A (en) * | 2017-05-14 | 2020-01-10 | 镭亚股份有限公司 | Multi-view backlights, displays, and methods employing active emitters |
| CN108447407A (en) * | 2018-02-09 | 2018-08-24 | 武汉华星光电技术有限公司 | A kind of micromeritics LED display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101661711B (en) | Backlight unit, display device and method for displaying dynamic image | |
| KR101308752B1 (en) | Liquid crystal display device | |
| US7460196B2 (en) | Backlight device for liquid crystal display and method of fabricating the same | |
| US8721150B2 (en) | Backlight assembly and liquid crystal display device using the same | |
| CN101476703B (en) | Backlight unit | |
| KR20050022820A (en) | device for back light unit using LED chip | |
| CN203686775U (en) | LD fill-in light backlight device | |
| GB2393845A (en) | Backlight device of liquid crystal dispay device and method of fabricating the same | |
| KR20090079929A (en) | Thin illumination deviece, display device and luminary device | |
| CN202813107U (en) | Backlight and liquid crystal display | |
| CN100428020C (en) | LCD backlight system with compatibility of night vision of using LED light source | |
| CN103090262A (en) | Backlight unit, display device therewith, and lighting system therewith | |
| WO2007138724A1 (en) | Backlight device and display device using same | |
| CN105242457A (en) | Light guide device with high color saturation | |
| CN203688945U (en) | Laser backlight liquid crystal display device | |
| CN101338877A (en) | Luminous diode array and backlight module group | |
| US20120050621A1 (en) | Lighting device, display device and television receiver | |
| CN114283702A (en) | Micro-interval LED display screen module based on RGB (Red, Green, blue) split array | |
| CN114333612B (en) | Micro-spacing LED display screen module based on grating lens | |
| CN114333613B (en) | Micro-spacing LED display screen module based on field sequential color technology | |
| JP2006284906A (en) | Backlight device and liquid crystal display device | |
| CN201449505U (en) | Backlight source apparatus for LCD | |
| CN114299822A (en) | Micro-interval LED display screen module based on high-power LED | |
| US20210003891A1 (en) | Backlight unit and display device including the same | |
| CN1052545C (en) | Colour large screen and super large screen liquid crystal display screen |
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 |