CN101887666A - LED display device - Google Patents
LED display device Download PDFInfo
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- CN101887666A CN101887666A CN2010101922018A CN201010192201A CN101887666A CN 101887666 A CN101887666 A CN 101887666A CN 2010101922018 A CN2010101922018 A CN 2010101922018A CN 201010192201 A CN201010192201 A CN 201010192201A CN 101887666 A CN101887666 A CN 101887666A
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- led display
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Abstract
The invention provides an LED display device, comprising an LED display panel. The LED display panel comprises plural LED pixels constituted by different fundamental color luminous elements; The LED display device also comprises a separation grid covering on the LED display panel and a diffusing screen arranged in front of the separation grid; the separation grid is used for separating each pixel on the LED display panel. In the LED display device provided in the invention, the separation grid is used for separating each pixel on the LED display panel and reducing mutual crosstalk of the light emitted by each pixel; and the diffusing screen is used for diffusing the light of LED pixels towards each direction and amplifying the visible size of the LED pixels, enabling the light emitted by the LED display device to be softer and more uniform, and improving the picture display quality of the LED display device.
Description
Technical field
The present invention relates to LED display technique field, relate in particular to a kind of LED display device.
Background technology
LED display is mainly used in the outdoor advertising, and its brightness height just can be clearly seen that in far distance, although pixel apart from bigger, because viewing distance is far, can not exert an influence to display effect.In recent years, along with development of technology, the point of LED display has reached 2 to 3mm level apart from having done littler and littler, the progressively interior application of inlet chamber of LED display.
The important component part of existing LED display is the LED display panel, common full-color LED display screen has dual mode to realize, a kind of is a plurality of red, green, blue LED elements to be fitted together form a LED pixel, another kind is three-in-one, be about to red, green, blue three-primary color LED component package together, form an element (normally SMT), weld in the circuit board then, each LED element is luminous under the driving of driving circuit.In the course of work of LED display, each LED element sends the light of different brightness and color under different driving voltages, thereby makes described LED display can show complicated picture.The encapsulation of LED element itself is a material transparent, so that light beam outgoing smoothly has metal electrode solder joint etc. around the LED element, these all can reflection ray.Having lamplit indoorly, the electrode pads of these reflection rays etc. will the reflection environment illumination light, even make display screen LED element look also black inadequately when not luminous, causes the contrast of display screen lower, and display image is distinct inadequately, and contrast is relatively poor.LED display is because directly luminous by the LED element, and the LED luminescence chip only accounts for very little area in the LED element, usually less than 1/5th.And, need to weld and leave enough intervals between the LED element, therefore, in LED display, luminous LED element similarly is a luminous point one by one, and display screen looks it is the dot matrix of separation one by one, closely watch discontinuously, display effect is relatively poor.
Summary of the invention
For solving the relatively poor problem of prior art LED display picture display quality, the invention provides a kind of picture display quality LED display device preferably.
A kind of LED display device, comprise the LED display panel, described LED display panel comprises a plurality of LED pixels that are made of the luminous unit of different base colors, and described LED display device also comprises the isolated gate that covers on the described LED display panel, and is arranged on the diffuser screen before the described isolated gate.
Described isolated gate is separated each described LED pixel, eliminates the optical crosstalk between the described LED pixel.
Described isolated gate covers the pad of the LED element that described LED pixel comprises and the not luminous component of described LED element, and the luminous position of corresponding each described LED pixel forms light hole.
Described isolated gate is black or dark, and it highly is higher than the height of the LED element that comprises in the described LED pixel.
Described isolated gate is made of the non-conducting material of extinction.
Described diffuser screen is simple ground glass or frosted organic glass, or rear projection screen, for example beaded glass rear projection screen etc.
Described LED display device further comprises the lens jacket that is arranged between described LED pixel and the described diffuser screen, and described lens jacket comprises and the corresponding a plurality of lens that are used to converge light of each described LED pixel.
A plurality of described lens in the described lens jacket are independent that install or integrally formed.
The described lens of in the described lens jacket each are sphere, non-spherical lens, Fresnel Lenses of glass or plastic material, or various elements that can deviation light such as holographic lens.
Described diffuser screen is integrated with described lens jacket or separates installation.
Compared with prior art, in the LED display device of the present invention, be coated with described isolated gate on the described LED display panel, described isolated gate is separated each the described pixel on the described LED display panel, reduces crosstalking mutually of light that each described pixel sends.Simultaneously, described diffuser screen was set before described isolated gate, the light that described diffuser screen can send the LED pixel makes the bright dipping of described LED display device more even to all directions scattering, improves the picture display quality of described LED display device.
Described lens jacket is made up of a plurality of optical lenses, converges the light that each pixel of described LED display device is sent, and reduces scattering to the light that loses on other directions.Under the constant situation of the luminosity of each described pixel, improve the light extraction efficiency of described LED display panel, the overall brightness of described LED display device is improved.
Description of drawings
Fig. 1 is the cross-sectional view of LED display device first embodiment of the present invention;
Fig. 2 is the cross-sectional view of LED display device second embodiment of the present invention;
Fig. 3 is the cross-sectional view of LED display device the 3rd embodiment of the present invention;
Fig. 4 is the cross-sectional view of LED display device the 3rd embodiment of the present invention.
Wherein, the 10,20,30, the 40th, the LED display device;
The 1st, the LED display panel;
The 11st, wiring board;
The 12nd, LED element solder joint;
The 13rd, the LED pixel
The 2nd, isolated gate;
The 21st, dividing wall;
The 22nd, shielding part;
The 23rd, light hole;
The 3rd, diffuser screen;
The 4th, lens jacket;
The 41st, lens.
Embodiment
See also Fig. 1, Fig. 1 is the cross-sectional view of LED display device first embodiment of the present invention.
Described LED display device 10 comprises LED display panel 1, described LED display panel 1 comprises wiring board 11, and be arranged on a plurality of LED pixels 13 that constitute by the different base colors light-emitting component on the described wiring board 11, each described LED pixel 13 can comprise a LED element, also can comprise a plurality of LED elements, LED element solder joint 12 is arranged between the described LED element.All comprise red LED element, green LED element and blue-led element as LED pixel 13 as described in each, then each described LED pixel 13 just can be sent the light of full color.
Described LED display device 10 also comprises isolated gate 2, and be arranged on diffuser screen 3 before the described isolated gate 2, described isolated gate 2 covers except that the going out on the described LED display panel 1 optical position of described pixel 13, separates each the described LED pixel 13 on the described LED display panel 1.Described isolated gate 2 can be made of lighttight non-conducting material, and the surface of described isolated gate 2 can be smooth, but also can be arranged to coarse surface.
Described isolated gate 2 comprises dividing wall 21, shielding part 22 and light hole 23, and described light hole 23 corresponding each described LED pixel 13 are provided with, and described isolated gate 2 begins to extend to the height that is higher than described LED pixel 13 and described LED element from LED display panel 1.Described isolated gate 2 is black or dark color, is made of the non-conducting material of extinction, and it is mainly used in separates the light that each described LED pixel 13 is sent, and prevents that the light that each described LED pixel 13 is sent from crosstalking mutually.Simultaneously, because the height of described isolated gate 2 is higher than the height of described LED pixel 13, can play the effect of supporting described diffuser screen 3, make the certain and impartial distance of maintenance between described diffuser screen 3 and the described wiring board 11, prevent that the distance between described diffuser screen 3 and the described LED pixel 13 is suddenly big or suddenly small, can make 3 pairs of scattering of light effects of described diffuser screen better, the display effect of whole LED display device 10 is more even.
Corresponding each the described LED pixel 13 in the position of described light hole 23 go out optical position, the light that each described LED pixel 13 is sent penetrates by described light hole 23.
Described diffuser screen 3 surfaces or inside are provided with light scatter particle or other micromechanisms, handle the uneven surface of back acquisition etc. as frosted.The light that described LED pixel 13 is sent diffuses on the described diffuser screen 3, by described diffuser screen 3 further scatterings, enlarged the effective area of described LED pixel 13, make adjacent described LED pixel 13 look more to press close to, improve the continuous pixels of described LED display device 10, improved the luminous homogeneity of described LED display device 10.
Described diffuser screen 3 can be made of glass or the organic glass handled through frosted, and described diffuser screen 3 can also use various rear projection screens to realize, for example uses rear projection screens such as scattering curtain, optics curtain or beaded glass curtain to realize.
Described diffuser screen 3 can be water white, also can dark colour.The diffuser screen 3 of dark colour can absorbing environmental light, improves the demonstration contrast of described LED display device 10.
During described LED display device 10 display frames, the light that sends from each described LED pixel 13 is through penetrating in the described light hole 23 of described isolated gate 2, transfer to described diffuser screen 3, described diffuser screen 3 with light scatter to all directions, the light that described LED display device 10 is sent is more even, picture shows more coherent, improves the picture display quality of described LED display device 10.
And the shielding part 22 of described isolated gate 2 covers except that the going out on the display panel 1 optical position of described LED element, and other structures such as electrode, solder joint etc. on the then described LED display panel 1 all are capped, and the not luminous component of described LED element also is capped.The material of described isolated gate 2 can adopt the strong material of light absorptive, make going out the optical position except that described LED pixel 13, the not illuminating part of described electrode, solder joint, described LED element grades and does not expose, reflect ambient light no longer, the black picture that therefore described LED display device 10 shows is more black, improves the demonstration contrast of described LED display device 10.
Described isolated gate 2 can leave slit or perforate in the adjacent domain that contacts with wiring board 11, so that give described LED element ventilation and heat.The position of slit or perforate is selected according to distinguished and admirable direction, the preferred design of convection current up and down.
Described isolated gate 2 can be fixedly installed on the described LED display panel 1, also can be made of one with described diffuser screen 3, fixes at the edge of described LED display module 1.
See also Fig. 2, Fig. 2 is the cross-sectional view of second embodiment of LED display device of the present invention.
Compare with the described LED display device 10 of first embodiment, the difference of the LED display device 20 of second embodiment mainly is: described LED display device 20 also comprises the lens jacket 4 that is arranged between described isolated gate 2 and the described diffuser screen 3, and described lens jacket 4 comprises a plurality of lens 41 that are used to converge light.
The described lens 41 of in the described lens jacket 4 each can adopt sphere, non-spherical lens, the Fresnel Lenses of glass or plastic material, or the lens of type such as holographic lens.Described lens 41 preferred fabrication are the form of convex lens, can be plano-convex lenss, also can be biconvex lens, and described lens 41 can also be arranged to other elements known, that can converge light.A described LED pixel 13 of each described lens 41 corresponding described LED display device 20 is arranged.A plurality of described lens 41 in the described lens jacket 4 can be one-body molded, is made into the form of lens matrix, so can reduce cost of manufacture.A plurality of described lens 41 in the described lens jacket 4 also can independently mutually be made, make each described lens 41 in described lens jacket 4, to install or to dismantle separately, so then can separately some described lens 41 be safeguarded or change, needn't be because of the flaw of one of them described lens 41 or damage and change whole described lens jacket 4.
The light that sends from each described LED pixel 13 is to all directions scattering, through described lens jacket 4 time, penetrates after the light of all directions scattering is pooled the light of relatively concentrating by wherein described lens 41 again.Therefore described lens jacket 4 can improve the light extraction efficiency of described LED display device 20, does not need to strengthen the luminosity of each described LED element, just can improve the overall brightness of described LED display device 20.
See also Fig. 3, Fig. 3 is the cross-sectional view of LED display device the 3rd embodiment of the present invention.
Compare with the described LED display device 10 of last embodiment; the difference of the LED display device 30 of present embodiment mainly is: described diffuser screen 3 and described lens jacket 4 are one; can under described diffuser screen 3, lens 41 be set, scattering particles or other micromechanisms perhaps be set on the upper strata of described lens jacket 4 realize described diffuser screen 3 and described lens jacket 4 simultaneously.Described diffuser screen 3 and described lens jacket 4 are one-body molded, can reduce the cost of device.
See also Fig. 4, Fig. 4 is the cross-sectional view of LED display device the 4th embodiment of the present invention.
Compare with the described LED display device 10 of first embodiment, the difference of the LED display device 40 of present embodiment mainly is: described isolated gate 2A does not comprise described shielding part and described light hole, and has only dividing wall.Because under the situation that adopts dark diffuser screen, because the effect that dark diffuser screen has the absorbing environmental illumination light, can improve the contrast of display screen, other positions such as electrode pads be hidden, enough demonstration contrasts still can be provided even without described shielding part is set.This scheme has been simplified the manufacture craft of described isolated gate 2A, has reduced production cost.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (10)
1. LED display device, comprise the LED display panel, described LED display panel comprises a plurality of LED pixels that are made of the luminous unit of different base colors, it is characterized in that: described LED display device also comprises the isolated gate that covers on the described LED display panel, and is arranged on the diffuser screen before the described isolated gate.
2. LED display device as claimed in claim 1 is characterized in that: described isolated gate is separated each described LED pixel.
3. LED display device as claimed in claim 2, it is characterized in that: described isolated gate covers the pad of the LED element that comprises in the described LED pixel and the not luminous component of described LED element, and the luminous position of corresponding each described LED pixel forms light hole.
4. as any described LED display device in the claim 1 to 3, it is characterized in that: described isolated gate is black or dark, and it highly is higher than the height of the LED element that comprises in the described LED pixel.
5. as any described LED display device in the claim 1 to 3, it is characterized in that: described isolated gate is made of the non-conducting material of extinction.
6. as any described LED display device in the claim 1 to 3, it is characterized in that: described diffuser screen is ground glass or frosted organic glass, or rear projection screen.
7. as any described LED display device in the claim 1 to 3, it is characterized in that: described LED display device further comprises the lens jacket that is arranged between described LED pixel and the described diffuser screen, and described lens jacket comprises and the corresponding a plurality of lens that are used to converge light of each described LED pixel.
8. LED display device as claimed in claim 7 is characterized in that: a plurality of described lens in the described lens jacket are independent that install or integrally formed.
9. LED display device as claimed in claim 7 is characterized in that: the described lens of each in the described lens jacket are spherical lens, non-spherical lens, Fresnel Lenses or holographic lenses of glass or plastic material.
10. LED display device as claimed in claim 7 is characterized in that: described diffuser screen is integrated with described lens jacket or separates installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101922018A CN101887666B (en) | 2010-05-31 | 2010-05-31 | LED display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101922018A CN101887666B (en) | 2010-05-31 | 2010-05-31 | LED display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101887666A true CN101887666A (en) | 2010-11-17 |
| CN101887666B CN101887666B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101922018A Expired - Fee Related CN101887666B (en) | 2010-05-31 | 2010-05-31 | LED display device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103165028A (en) * | 2011-12-09 | 2013-06-19 | 上海本星电子科技有限公司 | Embedded light emitting diode (LED) display screen and manufacture process thereof |
| CN104077974A (en) * | 2014-07-14 | 2014-10-01 | 吴小刚 | Ventilated and light-tight LED display screen |
| CN105303944A (en) * | 2015-10-21 | 2016-02-03 | 黄守瑜 | Novel teaching equipment |
| CN105679198A (en) * | 2016-04-12 | 2016-06-15 | 深圳市电明科技股份有限公司 | Mechanical shock resisting lens LED display screen module |
| EP3246902A1 (en) * | 2016-05-19 | 2017-11-22 | Young Optics Inc. | Display device |
| CN108320674A (en) * | 2018-04-11 | 2018-07-24 | 安徽大学 | L ED display screen capable of being used in close range |
| TWI665404B (en) * | 2018-10-05 | 2019-07-11 | 楊峻銘 | Light emitting device |
| CN110062942A (en) * | 2016-12-16 | 2019-07-26 | 夏普株式会社 | Display device |
| CN110349510A (en) * | 2018-04-08 | 2019-10-18 | 北京环宇蓝博科技有限公司 | A kind of curtain cover for LED display screen |
| CN110969958A (en) * | 2018-09-28 | 2020-04-07 | 深圳光峰科技股份有限公司 | LED display screen |
| CN110969951A (en) * | 2018-09-28 | 2020-04-07 | 深圳光峰科技股份有限公司 | LED display screen |
| US10876707B2 (en) | 2018-11-02 | 2020-12-29 | Young Optics Inc. | Pattern projection device |
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| CN107507525A (en) * | 2011-12-09 | 2017-12-22 | 上海本星电子科技有限公司 | The manufacture craft of the display panel of embedded LED light-emitting component |
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| CN104077974B (en) * | 2014-07-14 | 2016-09-07 | 吴小刚 | A kind of ventilative light tight LED display |
| CN105845043A (en) * | 2014-07-14 | 2016-08-10 | 吴小刚 | Ventilating and light-tight LED (light-emitting diode) display screen with helical baffle plate structure |
| CN105845042A (en) * | 2014-07-14 | 2016-08-10 | 吴小刚 | Ventilating and light-tight LED (light-emitting diode) display screen with oblique slope block structure |
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| CN105845043B (en) * | 2014-07-14 | 2018-12-07 | 深圳市齐普光电子股份有限公司 | A kind of ventilative opaque LED display with helical baffle structure |
| CN105303944A (en) * | 2015-10-21 | 2016-02-03 | 黄守瑜 | Novel teaching equipment |
| CN105679198A (en) * | 2016-04-12 | 2016-06-15 | 深圳市电明科技股份有限公司 | Mechanical shock resisting lens LED display screen module |
| EP3246902A1 (en) * | 2016-05-19 | 2017-11-22 | Young Optics Inc. | Display device |
| CN110062942A (en) * | 2016-12-16 | 2019-07-26 | 夏普株式会社 | Display device |
| CN110349510A (en) * | 2018-04-08 | 2019-10-18 | 北京环宇蓝博科技有限公司 | A kind of curtain cover for LED display screen |
| CN108320674A (en) * | 2018-04-11 | 2018-07-24 | 安徽大学 | L ED display screen capable of being used in close range |
| CN110969958A (en) * | 2018-09-28 | 2020-04-07 | 深圳光峰科技股份有限公司 | LED display screen |
| CN110969951A (en) * | 2018-09-28 | 2020-04-07 | 深圳光峰科技股份有限公司 | LED display screen |
| CN110969951B (en) * | 2018-09-28 | 2021-07-23 | 深圳光峰科技股份有限公司 | LED display screen |
| CN110969958B (en) * | 2018-09-28 | 2022-05-13 | 深圳光峰科技股份有限公司 | LED display screen |
| TWI665404B (en) * | 2018-10-05 | 2019-07-11 | 楊峻銘 | Light emitting device |
| US10876707B2 (en) | 2018-11-02 | 2020-12-29 | Young Optics Inc. | Pattern projection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101887666B (en) | 2012-07-04 |
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