CN213339456U - LED display screen - Google Patents
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- CN213339456U CN213339456U CN202020629419.4U CN202020629419U CN213339456U CN 213339456 U CN213339456 U CN 213339456U CN 202020629419 U CN202020629419 U CN 202020629419U CN 213339456 U CN213339456 U CN 213339456U
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Abstract
The utility model discloses an LED display screen, wherein the LED display screen is formed by splicing a plurality of LED sub-display screens, the LED sub-display screens comprise a display back plate and LEDs arranged on the display back plate, splicing seams exist among a plurality of the LED sub-display screens, wherein the LED horizontal height at the edge of the display back panel is lower than the LED horizontal height at the middle of the display back panel, so that the light intensity at the splicing seam is increased, the light intensity of the weak light areas formed at the two sides of the splicing seam is weakened, thereby sequentially weakening the light intensity from the middle part of the LED sub-display screens to the splicing seams, the weakening degree is within the range acceptable by naked eyes, the visual effect is not obviously impacted, the shadow condition of the existing large-size LED display screen at the splicing seam is improved, and the display effect of the large-size LED display screen is improved.
Description
Technical Field
The utility model relates to a LED display screen technical field especially relates to a LED display screen.
Background
The LED display screen is an electronic display screen formed by LED dot matrixes, displays content forms such as characters, animations, pictures and videos on the screen more by lightening and extinguishing red and green lamp beads, and controls component display through a modular structure.
At present, large-size LED display screens are usually formed by splicing a certain number of small-size LED display screens, but due to the limitation of the manufacturing process, as shown in fig. 1, the width S1 of the splicing seams between the LED display screens is much greater than the pixel pitch S2, and shadows are likely to appear at the splicing seams, which affects the display effect.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art not enough, the utility model aims at providing a LED display screen aims at solving current large-size LED display screen and appears the shadow easily in splice joint department, leads to the not good problem of display effect.
The technical scheme of the utility model as follows:
the utility model provides a LED display screen, wherein, the LED display screen is formed by the concatenation of a plurality of LED sub-display screen, LED sub-display screen is in including showing the backplate and setting LED on the display backplate, a plurality of there is the concatenation seam between the LED sub-display screen, wherein, the level of the LED that shows backplate edge position is less than show the level of the LED of backplate middle part.
The display back plate comprises a substrate, a circuit layer and a planarization layer which are sequentially arranged from bottom to top; the LED is disposed on the planarization layer.
The LED display screen is characterized in that the planarization layer of the display back plate is subjected to proofing treatment, so that the horizontal height of the LED at the edge part of the display back plate is lower than that of the LED at the middle part of the display back plate.
The LED display screen is characterized in that the LEDs at the edge of the display back panel and the LEDs at the middle of the display back panel are arranged on planes with different horizontal heights.
The height difference formed by the plane where the LEDs at the edge of the display back plate are located and the plane where the LEDs at the middle of the display back plate are located is equal to the width of the splicing seam.
The LED display screen, wherein the edge part of the planarization layer is arranged into an inclined plane; and the LEDs at the edge of the display back plate are arranged on the inclined plane.
And the horizontal height difference of the two ends of the inclined plane is equal to the width of the splicing seam.
The LED display screen is characterized in that the inclination angle of the inclined plane is 20-70 degrees.
The LED display screen is characterized in that a driving circuit for driving the LED chip is arranged in the circuit layer.
In the LED display screen, the driving circuit is a thin film transistor driving circuit.
Has the advantages that: the utility model provides a LED display screen, through the planarization layer to the demonstration backplate of LED sub-display screen the processing of beating, make show that the LED place horizontal plane at backplate edge position is less than show the LED place horizontal plane of backplate middle part to make the light of concatenation seam department carry out alternately spotlight, improved the light intensity of concatenation seam department, simultaneously concatenation seam both sides form weak light area, follow LED sub-display screen middle part arrives the light intensity of concatenation seam department weakens in proper order, and weakens the degree at the acceptable within range of naked eye, can not cause obvious impact to visual effect, has improved current jumbo size LED display screen and is in the shadow situation of concatenation seam department has improved the display effect of jumbo size LED display screen.
Drawings
FIG. 1 is a schematic view of light rays at a splice seam in a large-sized LED screen in the prior art.
Fig. 2 is a schematic structural diagram of a preferred embodiment of a display back plate of an LED sub-display screen in an LED display screen.
Fig. 3 is a schematic structural diagram of a preferred embodiment of the present invention, after a planarization layer on a display backplane is processed by sinking and punching.
Fig. 4 is a schematic structural diagram of a preferred embodiment of the present invention, after oblique component processing is performed on the planarization layer on the display back plate.
Detailed Description
The utility model provides a LED display screen, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Based on that the existing large-size LED display screen is formed by splicing a plurality of small-size LED display screens, the LED display screen adopts a micro LED, namely a mini-LED with the size smaller than 300 micrometers or a micro-LED with the size smaller than 300 micrometers, a shadow is easily formed at a splicing seam formed by splicing, and the display effect is influenced.
In this embodiment, the LED sub-display screen is an LED display screen in the prior art, and since the horizontal height of the LEDs at the edge of the display back panel is lower than the horizontal height of the LEDs at the middle of the display back panel, light at the splicing seams is cross-focused, so that the light intensity at the splicing seams is increased, and meanwhile, weak light areas are formed at two sides of the splicing seams, and the light intensity of the weak light areas is lower than the light intensity at the middle of the display back panel, so that the light intensity from the middle of the LED sub-display screen to the splicing seams is sequentially weakened, and the weakening degree is within an acceptable range of naked eyes, so that no obvious impact is caused on the visual effect, the dark shadow condition of the existing large-size LED display screen at the splicing seams is improved, and the display effect of the large-size LED display screen is improved.
Further, the display back plate comprises a substrate, a circuit layer and a planarization layer which are sequentially arranged from bottom to top; the LED is disposed on the planarization layer. In this embodiment, as shown in fig. 2, fig. 2 is the utility model relates to a structural schematic diagram of the preferred embodiment of the demonstration backplate of the sub-display screen of LED in the LED display screen, wherein, show backplate 1 and include from supreme base plate 12, circuit layer 11 and the planarization layer 10 that sets gradually down, the base plate is one or more in silica base plate, polyethersulfone base plate, polyacrylate base plate, polyetherimide panel, polyethylene terephthalate base plate, polyphenylene sulfide base plate, polyarylate base plate, polyimide base plate, polycarbonate base plate, cellulose triacetate base plate and the cellulose propionate base plate, be included the drive circuit who is used for driving the LED chip in the circuit layer, drive circuit is thin film transistor drive circuit. The planarization layer covers the circuit layer, and is one or more of a polymer layer with a phenolic hydroxyl group, a polymer layer with a propylene group, a polymer layer with an imide group, a polymer layer with an aromatic ether group, a polymer layer with an amide group, a polymer layer with a fluorine group, a polymer layer with a p-xylene group and a polymer layer with a vinyl alcohol group.
In this embodiment, a first contact electrode and a second contact electrode are further disposed on the surface of the planarization layer, the first contact electrode is connected to the driving circuit in the circuit layer through a filling material in a through hole in the planarization layer, and the second contact electrode is connected to a power ground in the circuit layer through a filling material in a through hole in the planarization layer, where the first contact electrode, the second contact electrode, and the filling material are made of one or more of aluminum, platinum, palladium, silver, magnesium, gold, nickel, neodymium, iridium, chromium, lithium, calcium, molybdenum, titanium, tungsten, or copper.
In some embodiments, the level of the LEDs at the edge of the display backplane is lower than the level of the LEDs at the middle of the display backplane by patterning the planarization layer of the display backplane. In this embodiment, because the circuit layer includes a driving circuit for driving the LED chip, the patterning process is performed on the planarization layer, so that the height of the edge of the planarization layer is lower than the height of the middle portion of the planarization layer, the horizontal height of the LED disposed in the middle portion of the planarization layer is higher than that of the edge of the planarization layer, and the LED disposed in the edge of the planarization layer is close to the splicing seam, thereby generating a light superposition effect at the splicing seam, enhancing the light intensity at the splicing seam, and improving the dark-shadow condition of the splicing seam.
In some embodiments, the LEDs at the edge of the display backplane are disposed on a different level than the LEDs at the middle of the display backplane. In this embodiment, as shown in fig. 3, fig. 3 is the utility model provides a show the structural schematic diagram of the planarization layer on backplate 100 through the better embodiment after sinking and beating the piece processing, in this embodiment, through right show that the planarization layer of backplate 100 sinks and beats the piece processing, make show the LED of backplate 100 edge part with the LED setting that shows backplate 100 middle part is on the plane that the level is different, as shown in fig. 3, because the light that the LED that shows backplate 100 edge part sent is in splice seam department produces spotlight effect, has increased the light intensity of splice seam department, simultaneously, splice seam both sides form new weak light area to in visual effect, weakened the shadow effect of splice seam department. Preferably, a height difference D formed by the plane where the LEDs on the edge of the display back panel 100 are located and the plane where the LEDs on the middle of the display back panel 100 are located is equal to the width C of the splicing seam. In this embodiment, the design that the height difference D is equal to the width C of the splicing seam is adopted, so that the situation that when the sinking height D is too small, the condensation effect at the splicing seam is not obvious, and the prepared large-size LED display screen still has a poor visual effect is avoided, and meanwhile, the situation that when the sinking height D is too large, the light of the condensation area at the splicing seam is too strong, the light of the weak light areas at the two sides of the condensation area is too weak, new shadow areas are generated at the two sides of the splicing seam, so that a more serious shadow problem is caused, and the display effect of the large-size LED display screen is influenced.
In some embodiments, the edge portion of the planarization layer is disposed as a bevel, and the LEDs of the display backplane edge portion are disposed on the bevel. In this embodiment, as shown in fig. 4, fig. 4 is the utility model provides a show that the planarization layer on backplate 200 is through the structural schematic diagram of the preferred embodiment after the piece processing is beaten to the slant, in this embodiment, it is right to show that the planarization layer of backplate 200 carries out the slant and beats the piece processing, makes show that the LED setting of backplate 200 edge part is on an inclined plane, and the setting is in light that the LED on the inclined plane sent also can the gathering takes place to splice seam department to form and gather the light zone, the both sides of gathering the light zone form weak light zone, the weak light zone of formation make from LED sub-display screen middle part extremely the light intensity of splice seam department is by strong to weak, can suitable transition treatment from the naked eye visual effect, makes the shadow effect of splice seam department is not obvious, has improved the display effect of jumbo size LED screen.
In some embodiments, the difference in level between the two ends of the slope is equal to the width of the splice seam. In this embodiment, the horizontal height difference E at the two ends of the inclined plane is set to be equal to the width C of the splicing seam, so that on one hand, the situation that the light condensing effect at the splicing seam is not obvious due to too small inclination angle and the obvious shadow effect still exists at the splicing seam to affect the display effect of the large-size LED display screen is avoided, and on the other hand, the situation that the light in the weak light area is too weak due to too large inclination angle to generate a new shadow area is avoided, so that more shadow areas appear on the large-size LED display screen and the visual effect is worse. Preferably, the edge of the uLED display screen is inclined at an angle of 20-70 degrees.
To sum up, the utility model provides a LED display screen beats a processing through the planarization layer to the demonstration backplate of LED sub-display screen, makes the LED's of demonstration backplate edge position level is less than show the LED's of backplate middle part level to make the light of concatenation seam department carry out alternately spotlight, improved the light intensity of concatenation seam department, simultaneously concatenation seam both sides form weak light zone, follow LED sub-display screen middle part arrives the light intensity of concatenation seam department weakens in proper order, and weakens the degree at the acceptable within range of naked eye, can not cause obvious impact to visual effect, has improved current jumbo size LED display screen and is in the shadow situation of concatenation seam department has improved jumbo size LED display screen's display effect.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a LED display screen, its characterized in that, the LED display screen is formed by the concatenation of a plurality of LED sub-display screen, LED sub-display screen is in including showing the backplate and setting LED on the display backplate, a plurality of there is the concatenation seam between the LED sub-display screen, wherein, the level of the LED that shows backplate edge position is less than show the level of the LED of backplate middle part.
2. The LED display screen of claim 1, wherein the display backplane comprises a substrate, a circuit layer and a planarization layer arranged in this order from bottom to top; the LED is disposed on the planarization layer.
3. The LED display screen of claim 2, wherein the planarization layer of the display backplane is patterned such that the LEDs at the edge of the display backplane have a lower level than the LEDs at the middle of the display backplane.
4. The LED display screen of claim 2, wherein the LEDs at the edge of the display backplane and the LEDs at the middle of the display backplane are arranged on different horizontal planes.
5. The LED display screen of claim 4, wherein a height difference formed by a plane where the LEDs at the edge of the display back panel are located and a plane where the LEDs at the middle of the display back panel are located is equal to the width of the splicing seam.
6. The LED display screen of claim 3, wherein the edge portion of the planarization layer is provided as a bevel; and the LEDs at the edge of the display back plate are arranged on the inclined plane.
7. The LED display screen of claim 6, wherein the horizontal height difference between the two ends of the inclined plane is equal to the width of the splicing seam.
8. The LED display screen of claim 6, wherein the slope is inclined at an angle of 20 ° -70 °.
9. The LED display screen of claim 3, wherein a driving circuit for driving the LED chips is disposed in the circuit layer.
10. The LED display screen of claim 9, wherein the driver circuit is a thin film transistor driver circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020629419.4U CN213339456U (en) | 2020-04-23 | 2020-04-23 | LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020629419.4U CN213339456U (en) | 2020-04-23 | 2020-04-23 | LED display screen |
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| CN213339456U true CN213339456U (en) | 2021-06-01 |
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| CN202020629419.4U Active CN213339456U (en) | 2020-04-23 | 2020-04-23 | LED display screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967612A (en) * | 2020-04-23 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | LED display screen |
| CN117392910A (en) * | 2023-09-15 | 2024-01-12 | 惠科股份有限公司 | Backlight module and display device |
-
2020
- 2020-04-23 CN CN202020629419.4U patent/CN213339456U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967612A (en) * | 2020-04-23 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | LED display screen |
| CN117392910A (en) * | 2023-09-15 | 2024-01-12 | 惠科股份有限公司 | Backlight module and display device |
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| CP03 | Change of name, title or address |
Address after: 402760 No.69, Wushan Road, Biquan street, Bishan District, Chongqing Patentee after: Chongqing Kangjia Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 402760 No.69, Wushan Road, Biquan street, Bishan District, Chongqing Patentee before: Chongqing Kangjia Photoelectric Technology Research Institute Co.,Ltd. Country or region before: China |
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