CN112967612A - LED display screen - Google Patents
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- CN112967612A CN112967612A CN202010327575.XA CN202010327575A CN112967612A CN 112967612 A CN112967612 A CN 112967612A CN 202010327575 A CN202010327575 A CN 202010327575A CN 112967612 A CN112967612 A CN 112967612A
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Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses an LED display screen, wherein the LED display screen is formed by splicing a plurality of LED sub-display screens, each LED sub-display screen comprises a display back plate and LEDs arranged on the display back plate, splicing seams exist among the plurality of LED sub-display screens, and the horizontal height of the LEDs at the edge of the display back plate is lower than that of the LEDs in the middle of the display back plate. According to the invention, as the LED horizontal height at the edge part of the display back panel is lower than the LED horizontal height at the middle part of the display back panel, the light intensity at the splicing seam is increased, and the light intensity of the weak light areas formed at two sides of the splicing seam is weakened, so that the light intensity from the middle part of the LED sub-display screen to the splicing seam is weakened in sequence, the weakening degree is within an acceptable range of naked eyes, no obvious impact is caused on the visual effect, 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 invention relates to the technical field of LED display screens, in particular to an 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 a manufacturing process, as shown in FIG. 1, the width of a splicing seam between the LED display screens is far larger than the pixel interval, and a shadow is easily generated at the splicing seam to influence the display effect.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the present invention aims to provide an LED display screen, which aims to solve the problem that the display effect is poor due to the fact that shadows are easily generated at the splicing seams of the existing large-size LED display screen.
The technical scheme of the invention is 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 panel, wherein the planarization layer is one or more of a polymer layer having a phenolic hydroxyl group, a polymer layer having a acryl group, a polymer layer having an imide group, a polymer layer having an aromatic ether group, a polymer layer having an amide group, a polymer layer having a fluorine group, a polymer layer having a p-xylene group, and a polymer layer having a vinyl alcohol group.
The LED display screen is characterized in that the substrate is one or more of a silicon dioxide substrate, a polyether sulfone substrate, a polyacrylate substrate, a polyetherimide substrate, a polyethylene terephthalate substrate, a polyphenylene sulfide substrate, a polyarylate substrate, a polyimide substrate, a polycarbonate substrate, a cellulose triacetate substrate and a cellulose propionate substrate.
Has the advantages that: the invention provides an LED display screen, wherein a flattening layer of a display back plate of an LED sub-display screen is subjected to component printing treatment, so that the horizontal plane of an LED at the edge part of the display back plate is lower than the horizontal plane of an LED at the middle part of the display back plate, light at a splicing seam is subjected to cross condensation, the light intensity at the splicing seam is improved, meanwhile, weak light areas are formed at two sides of the splicing seam, the light intensity from the middle part of the LED sub-display screen to the splicing seam is weakened in sequence, the weakening degree is within an acceptable range of naked eyes, no obvious impact is caused on the visual effect, the dark 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.
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 display backplane of an LED sub-display in an LED display according to a preferred embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a preferred embodiment of the present invention showing a planarizing layer on a back plate after a sinking component process.
Fig. 4 is a schematic structural diagram of a preferred embodiment of the display backplane after the planarization layer is processed by oblique punching.
Detailed Description
The invention provides an LED display screen, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below. 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 a schematic structural diagram of a preferred embodiment of a display back plate of an LED sub-display panel in an LED display panel according to the present invention, wherein the display back plate 1 includes a substrate 12, a circuit layer 11 and a planarization layer 10, which are sequentially disposed from bottom to top, the substrate is one or more of a silicon dioxide substrate, a polyether sulfone substrate, a polyacrylate substrate, a polyetherimide substrate, a polyethylene terephthalate substrate, a polyphenylene sulfide substrate, a polyarylate substrate, a polyimide substrate, a polycarbonate substrate, a cellulose triacetate substrate and a cellulose propionate substrate, a driving circuit for driving an LED chip is included in the circuit layer, the driving circuit is one of a thin film transistor, a gate line and a signal line, the planarization layer covers the circuit layer, the planarization layer is a polymer layer having a phenolic hydroxyl group, one or more of a polymer layer having a acryl group, a polymer layer having an imide group, a polymer layer having an aromatic ether group, a polymer layer having an amide group, a polymer layer having a fluorine group, a polymer layer having a p-xylene group, and a polymer layer having a vinyl alcohol group, and preferably, the planarization layer is a polymer layer having polymethyl methacrylate and a polymer layer having polystyrene, and the planarization layer can eliminate a valence jump on the circuit layer, so that the circuit layer is planarized.
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 a schematic structural diagram of a preferred embodiment of the display backplane after a planarization layer on the display backplane is subjected to sinking component processing, in this embodiment, the LED at the edge of the display backplane and the LED at the middle of the display backplane are arranged on planes with different horizontal heights by performing the sinking component processing on the planarization layer of the display backplane, as shown in fig. 3, because light emitted by the LED at the edge of the display backplane generates a light gathering effect at the splicing seam, the light intensity at the splicing seam is increased, and meanwhile, new weak light areas are formed at two sides of the splicing seam, so that in a visual effect, a shadow effect at the splicing seam is weakened. Preferably, a height difference D formed by the plane where the LEDs at the edge of the display backplane and the plane where the LEDs at the middle of the display backplane is 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 a schematic structural diagram of a preferred embodiment of the display back plate of the present invention after a planarization layer on the display back plate is processed by oblique piece-printing, in this embodiment, an LED at an edge of the display back plate is disposed on an inclined plane, light emitted by the LED disposed on the inclined plane can be collected at a splicing seam, so as to form a light-collecting region, and weak light regions are formed at two sides of the light-collecting region, and the formed weak light regions enable light intensity from a middle portion of the LED sub-display screen to the splicing seam to be from strong to weak, so that a dark shadow effect at the splicing seam is not obvious in visual effect of naked eyes through proper transition processing, and a display effect of a large-sized LED screen is improved.
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.
In summary, the invention provides an LED display screen, wherein a planarization layer of a display back plate of an LED sub-display screen is processed by a piece-printing process, so that a horizontal height of an LED at an edge of the display back plate is lower than a horizontal height of an LED at a middle of the display back plate, thereby enabling light at a splicing seam to be cross-condensed, improving light intensity at the splicing seam, and forming weak light regions at two sides of the splicing seam, wherein the light intensity from the middle of the LED sub-display screen to the splicing seam is sequentially weakened, and the weakening degree is within an acceptable range of naked eyes, so that no obvious impact is caused on a visual effect, a dark shadow condition of the existing large-size LED display screen at the splicing seam is improved, and a display effect of the large-size LED display screen is improved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by 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 board 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 the planarization layer is one or more of a polymer layer having phenolic hydroxyl groups, a polymer layer having acryl groups, a polymer layer having imide groups, a polymer layer having aryl ether groups, a polymer layer having amide groups, a polymer layer having fluorine groups, a polymer layer having p-xylene groups, and a polymer layer having vinyl alcohol groups.
10. The LED display screen of claim 3, wherein the substrate is one or more of a silica substrate, a polyethersulfone substrate, a polyacrylate substrate, a polyetherimide substrate, a polyethylene terephthalate substrate, a polyphenylene sulfide substrate, a polyarylate substrate, a polyimide substrate, a polycarbonate substrate, a cellulose triacetate substrate, and a cellulose propionate substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327575.XA CN112967612A (en) | 2020-04-23 | 2020-04-23 | LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327575.XA CN112967612A (en) | 2020-04-23 | 2020-04-23 | LED display screen |
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| CN112967612A true CN112967612A (en) | 2021-06-15 |
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