CN201084341Y - Full-color LED dot matrix display module - Google Patents
Full-color LED dot matrix display module Download PDFInfo
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- CN201084341Y CN201084341Y CNU2007200943947U CN200720094394U CN201084341Y CN 201084341 Y CN201084341 Y CN 201084341Y CN U2007200943947 U CNU2007200943947 U CN U2007200943947U CN 200720094394 U CN200720094394 U CN 200720094394U CN 201084341 Y CN201084341 Y CN 201084341Y
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Abstract
The utility model relates to a full-color light-emitting diode dot matrix display module, comprising a white scotch tape is arranged inside a concave housing (11) and used as a sealing layer (16); a medium layer plate (15) is arranged on a faceplate (12) inside the concave housing (11); a circuit board (17), on which m x n LEDs (18) are welded, is arranged on the faceplate (12) inside the concave housing (11); the LEDs are all arranged in a plurality of bell-mouth holes of the medium layer plate (15) and the faceplate (12); the circuit board (17), the sealing layer (16) and the concave housing (11) are sealed together through a resin sealing layer (19) arranged on the circuit board (17) so as to get the full-color LED dot matrix display module; a plurality of grooves (20) are crosswise distributed among the m x n bell-mouth holes (14); the concave housing (11) is made of black plastic and the medium layer plate (15) is made of white plastic in order to enhance the contrast; and the connection of the LEDs (18) on the circuit board (17) slightly deviates from the public row and line routing. The utility model has the advantages that the full-color LED dot matrix display module contrast is increased; single element can be repaired; the performance is improved and the cost saved.
Description
Technical field
The utility model belongs to LED display technique field, relates to full-color LED dot matrix display module.
Background technology
LED is exactly light emitting diode, and the english abbreviation of light emitting diode is called for short LED.The semiconductor light-emitting-diode pixel is evenly distributed forms by several ten thousand-hundreds of thousands for LED display.Utilize different materials can make the LED pixel of different color.The LED dot matrix display screen is made up of the dot matrix display module that many evenly distributed light emitting diodes are formed.The LED dot matrix display screen is divided into graphic display screen and video display screen.Graphic display screen can show Chinese character, English text and figure synchronously with computing machine; Video display screen adopts microcomputer to control, picture and text, image and luxuriant, with in real time, synchronously, information propagation pattern is play various information clearly, also can show two dimension, three-dimensional animation, video recording, TV, VCD program and on-the-spot circumstance.LED display display frame is bright in luster, stereoscopic sensation is strong, quiet as oil painting, moving as film, be widely used in station, harbour, airport, market, hospital, hotel, bank, securities market, construction market, auction room, Industrial Management and other public place.
The LED dot matrix display screen can show numeral, literal, the graph image of variation; Be mainly used in indoor environment, have projector, video wall, the incomparable advantage of LCDs.
Why the LED dot matrix display screen is subjected to extensively paying attention to and is developed rapidly, is that the advantage that had with itself is inseparable.These advantages are summarized: the brightness height, operating voltage is low, power consumption is little, the life-span is long, shock-resistant and stable performance.The development prospect of LED is very wide, and at present just towards high brightness more, more high weather resistance, higher luminous density, higher uniformity of luminance, reliability, panchromaticization direction develop.
The LED dot matrix display screen can be divided into by color primaries: single primary colours display screen is a solid color; The dual base color display screen is red and green dual base color, 256 grades of gray scales, can show 65536 kinds of colors; LED dot matrix full-colour display screen is the red, green, blue three primary colours, and the full-colour display screen of 256 grades of gray scales can show more than 1,600 ten thousand kinds of colors.
LED dot matrix display screen luminous point diameter is generally Ф 3mm-Ф 10mm, and the display area that is constituted is general several to tens square metres.
The full-color LED dot matrix display module of prior art, its structure constitutes as Fig. 5, Fig. 6 and shown in Figure 7.
The hinge of white places the inside of recessed shell 11, and it be the sealant 16 in the equally distributed determinant of the panel 12 of recessed shell 11 individual " loudspeaker " shape hole 14 of m * n of arranging;
The outside surface of the panel 12 of recessed shell 11 is the plane, the hydraucone in " loudspeaker " shape hole 14 is towards the outside surface of panel 12 on the panel 12, recessed shell 11 integral body are made with white plastic, and the outside surface of the panel 12 of recessed shell 11 is made for black except " loudspeaker " shape hole 14 remainders with the method for serigraphy.Such structure is in order to reduce reflected light, to improve contrast.
Seal on wiring board 17 with resin-sealed, sealant 16 and wiring board 17 be encapsulated in the recessed shell 11 and with recessed shell 11 together with LED 18 be sealed into one, the top of wiring board 17 is resin-sealed layer 19, so just obtains a full-color LED dot matrix display module.
The subject matter that the LED dot matrix display module of existing prior art exists has: righting reflex light is stronger, and contrast is relatively poor; Its reason is to constitute this dot matrix display module, the outside surface of the panel 12 of recessed shell 11, except " loudspeaker " shape hole 14 remainders are made for black with the method for serigraphy, 4 facades of all the other of recessed shell 11 are white, this dot matrix display module is when mutual assembly unit, because the slit between this dot matrix display module is a white, thereby has increased reflective light intensity, makes contrast become poorer;
Secondly, this dot matrix display module also has fatal shortcoming, LED 18 places in the common row column circuits wiring of wiring board 17, in case this dot matrix display module has a LED who constitutes luminous display pixel to damage, can not effectively carry out the single-point maintenance, cause this dot matrix display module is whole and scrap, increase environmental pollution and maintenance cost expense widely.
Summary of the invention
In order to solve the poor contrast that present full-color LED dot matrix display module exists and can not to carry out the single-point maintenance problem, the utility model provides a kind of full-color LED dot matrix display module.This full-color LED dot matrix display module has improved contrast greatly and can carry out the single-point maintenance.
In order to improve contrast, just require the background color of display device will be as much as possible dark or background color be black, on the other hand, luminosity is brighter.Finished the purpose of raising contrast of the present utility model according to this technical thought.
Shown in Fig. 1,2,3 and 4, full-color LED dot matrix display module structure of the present utility model constitutes:
The hinge of white places the inside of recessed shell 11, and it be the sealant 16 in the equally distributed determinant of the panel 12 of recessed shell 11 individual " loudspeaker " shape hole 14 of m * n of arranging;
The outside surface of the panel 12 of recessed shell 11 is the plane, the hydraucone in " loudspeaker " shape hole 14 is towards the outside surface of panel 12 on the panel 12, recessed shell 11 integral body are made with white plastic, and the outside surface of the panel 12 of recessed shell 11 is made for black except " loudspeaker " shape hole 14 remainders with the method for serigraphy.Such structure is in order to reduce reflected light, to improve contrast.
Seal on wiring board 17 with resin-sealed, sealant 16 and wiring board 17 be encapsulated in the recessed shell 11 and with recessed shell 11 together with LED 18 be sealed into one, the top of wiring board 17 is resin-sealed layer 19, so just obtains a full-color LED dot matrix display module; It is characterized in that:
Between the panel 12 and wiring board 17 of the inside of described recessed shell 11, increase one deck mesosphere board 15; The structure of described mesosphere board 15, as shown in Figure 3; Wherein, Fig. 3-the 1st, front view, 3-2 are side views, 3-3 is that A-A is to local amplification profile.Mesosphere board 15 usefulness white plastic are made, m * n " loudspeaker " shape hole that mesosphere board 15 has equally distributed determinant to arrange, hydraucone that should " loudspeaker " shape hole 3 is also towards the outside surface of panel 12, should " loudspeaker " shape hole 3 with panel 12 on equally distributed determinant m * n " loudspeaker " shape hole 14 corresponding one by one arrangement and the difference of arranging concentric, LED 18 is placed among individual " loudspeaker " shape hole 3 of m * n and " loudspeaker " shape hole 14; There are raised brim 4 and 5 in described " loudspeaker " hole 3, and wherein raised brim 5 is put into " loudspeaker " shape hole 14 of panel 12.Both cooperatively interact reflective with minimizing so that reach optically focused, thereby strengthen the contrast of full-color LED dot matrix display module;
Above-described m, n are the integer greater than 1, preferred m, and n is 8;
Between m * n that determinant on the outside surface of the panel 12 of described recessed shell 11 is arranged uniform " loudspeaker " shape hole 14, the groove 20 of cross-distribution is in length and breadth arranged, described groove 20 preferred V-type groove or U type grooves; Groove 20 of cross-distribution can be reflective to all directions in length and breadth for this, forms diffuse reflection on the outside surface of panel 12, and the righting reflex light of the outside surface of panel 12 is weakened and deepening relatively, thereby increase contrast;
Described recessed shell 11 integral body are made with black plastic.
The plastics of recessed shell 11 usefulness black are made, and the plastics of mesosphere board 15 usefulness white are made, so like this one black one white, the recessed shell 11 of black is in order to reduce the reflected light in full-color LED dot matrix display module front, to form dark background on the one hand; Simultaneously, this dot matrix display module is when mutual assembly unit, because the slit between this dot matrix display module also is a black, thereby reflected light has reduced reflective light intensity, makes contrast become better; And " loudspeaker " shape hole 3 that has tapering on the mesosphere board 15 of white, can be as " electric torch " optically focused and reflective, thus make contrast become better.
As shown in Figure 4, each LED on the described wiring board 17 departs from a segment distance slightly with public row, column wiring 30 and is connected, keeps in repair thereby can carry out single-point.Saved the maintenance cost of full-color LED dot matrix display module like this, greatly.So so, be because:
The wiring layout of existing LED dot matrix display module wiring board 17, the bond pad locations of each LED18 all the row on the wiring board 17 ,] in the row common line wiring 30.Like this, if, there is LED to damage and will carries out the single-point maintenance, when bad LED position is bored, can cause the common line interruption, scrap thereby cause this dot matrix display module is whole, increase environmental pollution and maintenance cost expense widely.
Full-color LED dot matrix display module of the present utility model can be with having the fabrication techniques for preparing full-color LED dot matrix display module and full-color LED dot matrix display screen now.
The beneficial effects of the utility model: full-color LED dot matrix display module of the present utility model, between m * n that determinant on the outside surface of the panel 12 of described recessed shell 11 is arranged uniform " loudspeaker " shape hole 14, the groove 20 of cross-distribution is in length and breadth arranged, preferred V-type groove of described groove or U type groove; This is the groove 20 of cross-distribution in length and breadth, can be reflective to all directions, on the surface of panel 12, form diffuse reflection, and the righting reflex light of the outside surface of panel 12 is weakened relatively, thereby increase contrast;
The plastics of described recessed shell 11 usefulness black are made, and the plastics of mesosphere board 15 usefulness white are made, so like this one black one white, the recessed shell 11 of black is in order to reduce the reflected light in full-color LED dot matrix display module front, to form dark background on the one hand; Simultaneously, this dot matrix display module is when mutual assembly unit, because the plastics of recessed shell 11 usefulness black are made, the slit between this dot matrix display module also is a black, thereby reflected light has reduced reflective light intensity, makes contrast become better.
The structure of the wiring of described wiring board 17, as shown in Figure 4; Among the figure 18 is LED, the 30th, and the row, column wiring of omnibus circuit; All LED 18 on the described wiring board 17 show that with existing full-color LED dot matrix the row, column circuitry lines 30 of the omnibus circuit of mould departs from a segment distance and is connected, and make the LED of whole full-color LED dot matrix display module can carry out the single-point repair and replacement.
So so, be wiring because of present full-color LED dot matrix display module wiring board 17, the bond pad locations of each LED is all on the wiring of the common line on the wiring board 17 row, column line 30.Like this, if, there is LED to damage and will carries out the single-point maintenance, when bad LED position is bored, can cause the common line interruption, scrap thereby cause this dot matrix display module is whole, increase environmental pollution and maintenance cost expense widely.
Can carry out the single-point maintenance in order to solve, the utility model has adopted layout cleverly in the wiring design of wiring board 17.As shown in Figure 4, every group of LED tube core all has with the row, column wiring 30 of omnibus circuit and departs from a segment distance and is connected, like this, when some LED damage, can implement separately its repair and replacement, and the row, column that can not damage omnibus circuit connects up 30.Whole full-color LED dot matrix display module carries out the single-point repair and replacement to LED, can not damage whole full-color LED dot matrix display module.Saved the maintenance cost of full-color LED dot matrix display module like this, greatly.
In addition, described recessed shell 11 integral body are made with black plastic.The method that had both reduced serigraphy is made the step and the cost of black outside surface of the panel 12 of recessed shell 11, makes full-color LED dot matrix display module again when assembly unit, does not have the seam of white, thereby reduces reflected light, increases contrast.
Attention: detected object is a display screen, provide the pixel number of display screen!
The full-color LED dot matrix display module (display screen that the utility model provides?) and the LED dot matrix display module (display screen of existing prior art?), carried out technology for detection, its detection thes contents are as follows:
Is detected object: 1, the surface the full-color LED dot matrix display module (display screen on plane?); 2, the surperficial fluted full-color LED dot matrix display module (display screen that provides of the utility model?
Detecting instrument: BM-7 color luminance meter.
Testing conditions: ambient light illumination 951x-1031x.
Detection site: sensing chamber of Xi Da company.
The result who detects is as shown in table 1.
Table 1
| Detected object | Background luminance B D | High-high brightness Bmax | Contrast C |
| The surface is the full-color LED dot matrix display module on plane | 8.5cd/m 2 | 965.4cd/m 2 | 1125.8 |
| The full-color LED dot matrix display module that the surface is reeded | 5.7cd/m 2 | 966.3cd/m 2 | 168.5 |
Conclusion: under identical condition, the surperficial fluted full-color LED dot matrix display module (display screen that the utility model provides?) be specific surface the full-color LED dot matrix display module (display screen on plane?) contrast improved 49.7%.
Description of drawings
Fig. 1 is the front view of the structural representation of full-color LED dot matrix display module of the present utility model.
Fig. 2 is the top plan view of the structural representation of full-color LED dot matrix display module of the present utility model.This figure also is a Figure of abstract.
Fig. 3 is mesosphere board 15 structural representations of full-color LED dot matrix display module of the present utility model.Fig. 3-the 1st, front view, Fig. 3-the 2nd, left view, Fig. 3-the 3rd, the local amplification profile of A-A.
Fig. 4 is the wiring board 17 single-point maintaining structure synoptic diagram of full-color LED dot matrix display module of the present utility model.
Fig. 5 is the front view of existing LED dot matrix display module structural representation.
Fig. 6 is the sectional view of the vertical view of existing LED dot matrix display module structural representation.
Fig. 7 is wiring board 17 structural representations of existing LED dot matrix display module.
Embodiment
It is 8 * 8 full-color LED dot matrix display module that present embodiment provides a kind of luminous display element.The physical dimension of this dot matrix display module is 60.96 * 60.96mm, pixel spacing: 7.62mm, and display aperture 14 diameters are Ф 5mm,
Luminous display element is that the step and the condition of 8 * 8 full-color LED dot matrix display module method for making is as follows:
Make recessed shell 11 and mesosphere board 15 with mould; Described recessed shell 11 integral body are made with black plastic, and mesosphere board 15 is made with white plastic;
Between 8 * 8 uniform " loudspeaker " shape holes 14 that determinant on the outside surface of the panel 12 of described recessed shell 11 is arranged, the groove 20 of cross-distribution is in length and breadth arranged, described groove 20 preferred V-type groove or U type grooves; Groove 20 of cross-distribution can be reflective to all directions in length and breadth for this, forms diffuse reflection on the outside surface of panel 12, and the righting reflex light of the outside surface of panel 12 is weakened and deepening relatively, thereby increase contrast;
The hinge of white places the inside of recessed shell 11, it is the sealant 16 in the equally distributed determinant of the panel 12 of recessed shell 11 8 * 8 " loudspeaker " shape holes 14 of arranging, the spacing in " loudspeaker " shape hole 14 is: 7.62 * 7.62mm, the bore dia Ф 5mm in " loudspeaker " shape hole 14.There is the U type groove 20 of cross-distribution in length and breadth in 14 in panel 12 lip-deep " loudspeaker " shape hole at recessed shell 11, and the wide of U type groove 20 is 0.4mm, dark 0.4mm;
As shown in Figure 4, each LED on the described wiring board 17 departs from a segment distance slightly with public row, column wiring 30 and is connected, keeps in repair thereby can carry out single-point.Saved the maintenance cost of full-color LED dot matrix display module like this, greatly;
Seal on wiring board 17 with resin-sealed, sealant 16 and wiring board 17 are encapsulated in the recessed shell 11 and with recessed shell 11 together with LED 18 are sealed into one, the top of wiring board 17 be resin-sealed layer 19, again at 70-80 ℃, handles 4-8 hour; So just obtain a pixel number and be 8 * 8 full-color LED dot matrix display module.
Claims (13)
1. full-color LED dot matrix display module, it constitutes: the hinge of white places the inside of recessed shell (11), and it be the sealant (16) in the equally distributed determinant of the panel (12) of recessed shell (11) individual " loudspeaker " shape hole (14) of m * n of arranging;
On the panel (12) of recessed shell (11) " loudspeaker " shape hole (14) is arranged, be somebody's turn to do the outside surface of the hydraucone in " loudspeaker " shape hole (14) towards panel (12);
Wiring board (17) place recessed shell (11) the inside panel (12) above; Wiring board (17) is welded with m * n the LED (18) that equally distributed determinant is arranged, and, LED (18) places in " loudspeaker " shape hole (14) respectively, m * n the display element that the equally distributed determinant that makes LED (18) and " loudspeaker " shape hole (14) become LED dot matrix display module is arranged;
Seal on wiring board (17) with resin-sealed, sealant (16) and wiring board (17) be encapsulated in the recessed shell (11) and with recessed shell (11) together with LED (18) be sealed into one, the top of wiring board (17) is resin-sealed layer (19), so just obtains a full-color LED dot matrix display module; It is characterized in that:
Between the panel (12) and wiring board (17) of the inside of described recessed shell (11), increase one deck mesosphere board (15); M * n " loudspeaker " shape hole (3) that mesosphere board (15) has equally distributed determinant to arrange, hydraucone that should " loudspeaker " shape hole (3) is also towards the outside surface of panel (12), should " loudspeaker " shape hole (3) with panel (12) on equally distributed determinant m * n the corresponding one by one arrangement in " loudspeaker " shape hole (14) and the difference of arranging concentric, LED (18) is placed among individual " loudspeaker " shape hole (3) of m * n and " loudspeaker " shape hole (14); There are raised brim (4) and (5) in described " loudspeaker " holes (3), and wherein raised brim (5) is put into " loudspeaker " shape hole (14) of panel (12); Above-described m, n are the integer greater than 1.
2. full-color LED dot matrix display module as claimed in claim 1, it is characterized in that: between m * n that the determinant on the outside surface of described recessed shell (11) panel (12) is arranged uniform " loudspeaker " shape hole (14), the groove of cross-distribution (20) is in length and breadth arranged;
3. full-color LED dot matrix display module as claimed in claim 2 is characterized in that: described groove (20) is V-type groove or U type groove.
4. full-color LED dot matrix display module as claimed in claim 1 or 2 is characterized in that: each LED (18) on the described wiring board (17) departs from a segment distance slightly with public row, column wiring (30) and is connected.
5. full-color LED dot matrix display module as claimed in claim 3 is characterized in that: each LED (18) on the described wiring board (17) departs from a segment distance slightly with public row, column wiring (30) and is connected.
6. full-color LED dot matrix display module as claimed in claim 1 or 2 is characterized in that: described recessed shell (11) is whole to be made with black plastic; Described mesosphere board (15) is made with white plastic.
7. full-color LED dot matrix display module as claimed in claim 3 is characterized in that: described recessed shell (11) is whole to be made with black plastic; Described mesosphere board (15) is made with white plastic.
8. full-color LED dot matrix display module as claimed in claim 4 is characterized in that: described recessed shell (11) is whole to be made with black plastic; Described mesosphere board (15) is made with white plastic.
9. full-color LED dot matrix display module as claimed in claim 5 is characterized in that: described recessed shell (11) is whole to be made with black plastic; Described mesosphere board (15) is made with white plastic.
10. full-color LED dot matrix display module as claimed in claim 1 or 2 is characterized in that: described m, and n is 8;
11. full-color LED dot matrix display module as claimed in claim 3 is characterized in that: described m, n is 8;
12. full-color LED dot matrix display module as claimed in claim 4 is characterized in that: described m, n is 8;
13. full-color LED dot matrix display module as claimed in claim 5 is characterized in that: described m, n is 8;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200943947U CN201084341Y (en) | 2007-09-26 | 2007-09-26 | Full-color LED dot matrix display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200943947U CN201084341Y (en) | 2007-09-26 | 2007-09-26 | Full-color LED dot matrix display module |
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| Publication Number | Publication Date |
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| CN201084341Y true CN201084341Y (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200943947U Expired - Fee Related CN201084341Y (en) | 2007-09-26 | 2007-09-26 | Full-color LED dot matrix display module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853615A (en) * | 2010-05-20 | 2010-10-06 | 广东威创视讯科技股份有限公司 | LED display device |
| CN101916534A (en) * | 2010-08-24 | 2010-12-15 | 广东威创视讯科技股份有限公司 | Led display screen |
| WO2011032465A1 (en) * | 2009-09-18 | 2011-03-24 | Lin Yi | High-transparent led display module |
| CN102122463A (en) * | 2011-03-24 | 2011-07-13 | 李海涛 | Chip LED (light emitting diode) display screen and manufacturing method thereof |
| CN102956790A (en) * | 2011-08-18 | 2013-03-06 | 一诠精密工业股份有限公司 | LED lead frame and manufacture method thereof |
| CN103021288A (en) * | 2012-12-12 | 2013-04-03 | 长春希达电子技术有限公司 | Packaging integrating three-in-one LED (Light Emitting Diode) display unit |
| CN105172433A (en) * | 2015-09-30 | 2015-12-23 | 刘琴 | Electronic numerical control blackboard |
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2007
- 2007-09-26 CN CNU2007200943947U patent/CN201084341Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032465A1 (en) * | 2009-09-18 | 2011-03-24 | Lin Yi | High-transparent led display module |
| CN102024387B (en) * | 2009-09-18 | 2013-06-12 | 深圳市晶泓科技有限公司 | High transparent LED (light emitting diode) display module |
| CN101853615A (en) * | 2010-05-20 | 2010-10-06 | 广东威创视讯科技股份有限公司 | LED display device |
| CN101916534A (en) * | 2010-08-24 | 2010-12-15 | 广东威创视讯科技股份有限公司 | Led display screen |
| CN102122463A (en) * | 2011-03-24 | 2011-07-13 | 李海涛 | Chip LED (light emitting diode) display screen and manufacturing method thereof |
| CN102122463B (en) * | 2011-03-24 | 2015-04-15 | 李海涛 | Manufacturing method of chip LED (light emitting diode) display screen |
| CN102956790A (en) * | 2011-08-18 | 2013-03-06 | 一诠精密工业股份有限公司 | LED lead frame and manufacture method thereof |
| CN103021288A (en) * | 2012-12-12 | 2013-04-03 | 长春希达电子技术有限公司 | Packaging integrating three-in-one LED (Light Emitting Diode) display unit |
| CN105172433A (en) * | 2015-09-30 | 2015-12-23 | 刘琴 | Electronic numerical control blackboard |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20100926 |
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Addressee: Changchun Hilda Financial Electronic Technology Co Ltd Document name: Notification of Approving Refund |
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