CN113366561A - Display back plate, display device and splicing display device - Google Patents
Display back plate, display device and splicing display device Download PDFInfo
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- CN113366561A CN113366561A CN201980004137.5A CN201980004137A CN113366561A CN 113366561 A CN113366561 A CN 113366561A CN 201980004137 A CN201980004137 A CN 201980004137A CN 113366561 A CN113366561 A CN 113366561A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
A display device (4) comprises a spliced display device (5) and a display back plate (1), wherein the display back plate (1) is provided with a plurality of pixel areas (2), and each pixel area (2) comprises three light-emitting diodes (21) which respectively emit light with different colors; the display back plate (1) comprises at least two back plates, wherein a light-emitting diode (21) emitting light of any one color is arranged on one back plate; the light-emitting diodes (21) emitting light of the other two colors are arranged on the rest of the at least two back plates; at least two back plates are stacked, and the other back plate positioned on one side of one back plate provided with the light-emitting diode (21) is a light-transmitting plate.
Description
The invention relates to the technical field of Micro-LED displays, in particular to a display back plate, display equipment and splicing display equipment.
As a new solid Light source, an LED (Light Emitting Diode) has been widely used in display devices.
A Micro light emitting diode (Micro led) generally refers to a Micro led chip with a size reduced to a size within 200 micrometers based on a conventional Micro led chip structure, and red, green, and blue Micro leds are arranged on a Thin Film Transistor (TFT) or a Complementary Metal Oxide Semiconductor (cmos) according to a certain rule, so that a Micro device capable of realizing full color display is formed. The display has independently controlled display pixels, has the characteristics of independent light emission control, high luminance, low power consumption, ultrahigh resolution, ultrahigh color saturation and the like, and the micro LED micro display device has the technical characteristic of self-luminescence, can realize flexible and transparent display and the like, and the power consumption of the micro LED micro display device is only about 10 percent of that of a liquid crystal panel.
In the prior art, a Micro-LED display backplane comprises a plurality of Pixel areas pixels, each Pixel comprising a red LED, a blue LED and a green LED. In the manufacturing process of the display, the red, green and blue LED chips are required to be transferred to a display back plate, then packaged, cut and trimmed.
When each display back plate is cut, the cutting error or the heat influence range (e.g.. Δ = ± 50um, ± 100um, …) is inevitable, and as the pitch of the LED display is smaller (e.g. P0.9, P0.6, P0.49, …, etc.), the LED is very close to the cutting edge. When the cutting error is not effectively reduced, the cutting and trimming are difficult. If too many boundaries are left due to the difficulty in cutting, the boundaries will affect the splicing effect if the display screen is spliced.
In view of the above, it is desirable to provide a display back plate, a display device and a tiled display device, which can facilitate cutting and trimming of the back plate.
In a first aspect, an embodiment of the present invention provides a display backplane. The display back plate is provided with a plurality of pixel areas, and each pixel area comprises three light-emitting diodes which respectively emit light with different colors; the display back plate comprises at least two back plates, wherein the light-emitting diode emitting light of any one color is arranged on one back plate; the light emitting diodes emitting light of the other two colors are arranged on the rest of the at least two back plates; the at least two back plates are stacked, and the other back plate positioned on one side of one back plate, which is provided with the light-emitting diode, is a light-transmitting plate.
In a second aspect, an embodiment of the present invention provides a display device, which includes a housing and the above display back plate disposed on the housing.
In a third aspect, the invention provides a tiled display device, which includes a housing and a plurality of display backplates arranged on the housing, wherein the plurality of display backplates are tiled together.
According to the display back plate, the display device and the splicing display device, the light emitting diodes are arranged on the at least two back plates which are stacked, compared with the situation that the light emitting diodes are arranged on one back plate, the light emitting diodes are arranged in the same pixel amount, the distance between the light emitting diodes and the edges of the back plates is larger, and therefore the display back plates can be cut and trimmed more easily.
Fig. 1 is a schematic plan view of a display backplane according to a first embodiment of the present invention.
Fig. 2 is a schematic view of a display backplane according to a first embodiment of the present invention.
Fig. 3 is a comparison diagram showing a back plate provided with leds of one color and a back plate provided with leds of three colors in the back plate according to the first embodiment of the present invention.
FIG. 4 is a schematic view of a display backplane according to a second embodiment of the present invention.
FIG. 5 is a schematic view of a display backplane according to a third embodiment of the present invention.
FIG. 6 is a schematic view of a display backplane according to a fourth embodiment of the present invention.
FIG. 7 is a schematic view of a display backplane according to a fifth embodiment of the present invention.
Fig. 8 is a schematic view of a display device using the display backplane according to a first embodiment of the present invention.
Fig. 9 is a schematic diagram of a tiled display device to which the display device of the first embodiment of the present invention is applied.
In order that the present disclosure may be more clearly and accurately understood, reference will now be made in detail to the accompanying drawings. The drawings illustrate examples of embodiments of the invention, in which like numerals represent like elements. It is to be understood that the drawings are not to scale as the invention may be practiced in practice, but are for illustrative purposes and are not to scale.
Referring to fig. 1, fig. 1 is a schematic plan view of a display back plate 1 according to a first embodiment. The display backplane 1 is provided with a plurality of pixel areas 2. Each pixel region 2 includes three light emitting diodes 21, and the three light emitting diodes 21 are a first light emitting diode 211 emitting first monochromatic light of different colors, a second light emitting diode 212 emitting second monochromatic light, and a third light emitting diode 213 emitting third monochromatic light, respectively.
Optionally, the size of the light emitting diodes 21 is less than 100 microns.
Optionally, the size of the light emitting diode 21 is larger than 100 microns and smaller than 300 microns.
In the present embodiment, the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are a red LED, a blue LED, and a green LED, respectively.
Of course, in practical use, the first light emitting diode 211 may be a blue LED or a green LED, and the same is true for the second light emitting diode 212 and the third light emitting diode 213. Here, the number of the carbon atoms is not particularly limited.
Optionally, the first, second and third monochromic light correspond to red light, blue light and green light, respectively. The display backplane 1 may be located on an electronic display device 4, such as a mobile phone, a tablet computer, a television, and other electronic display devices 4 that include LED display screens. The display backplane 1 comprises at least two backplanes arranged one above the other. Any one of the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 is disposed on one back plate. The light emitting diodes emitting light of the other two colors are disposed on the remaining back plate of the at least two back plates. At least two back plates are stacked, and the other back plate positioned on one side of one back plate, which is provided with the light-emitting diode, is a light-transmitting plate.
Referring to fig. 2 and fig. 3, in the present embodiment, the back plate 1 is shown to include a first back plate 11 and two second back plates 12a and 12 b. The second back plate 12b, the second back plate 12a, and the first back plate 11 are stacked in sequence along the optical path direction of the light emitting diodes 21 on the display back plate 1. The first back sheet 11 and the second back sheet 12a are made of a light-transmitting material. The second back plate 12b may be made of a light transmissive material or a light opaque material. Specifically, the first back plate 11 is a light-transmitting plate. The light-transmitting plate can be made of glass material. The glass material may be, but is not limited to, a glass material having SiO2 as a main component.
In some possible embodiments, a plastic transparent material may also be used, and the plastic glass material may be, but is not limited to, polyethersulfone (pes), polyacrylate (par), polyetherimide (pei), polyethylene naphthalate (pet), polyphenylene sulfide (pps), poly α -acrylate, polyimide, polycarbonate (pc), cellulose Triacetate (TAC), Cellulose Acetate Propionate (CAP), and the like. If the display back plate 1 has two adjacent light emitting diodes 21, they are equally spaced according to the preset first spacing W1. Two light emitting diodes 21 emitting other two different monochromatic lights can be placed between two adjacent light emitting diodes 21 emitting the same monochromatic light on the back plate, and the distance between every two light emitting diodes is W2. Wherein W2= W1/3. The following description will take the first light emitting diode 211 disposed on the first back plate 11, the second light emitting diode disposed on the second back plate 12a, and the third light emitting diode disposed on the second back plate 12b as an example.
Referring to fig. 2 again, the two first light emitting diodes 211 have a first spacing W1, wherein a second spacing D1 between one light emitting diode 211 disposed adjacent to the edge E1 of the first backplane 11 and the edge E1 of the first backplane 11 is equal to W1/2. Similarly, two adjacent second leds 212 have a first spacing W1, and a second spacing D2 between one second led 212 disposed adjacent to the edge E2 of the second backplane 12a and the edge E2 of the second backplane 12a is equal to W1/2. Two adjacent third light emitting diodes 213 have a first spacing W1, and a second spacing D2 between one light emitting diode 212 disposed adjacent to the edge E2 of the second backplane 12a and the edge E3 of the second backplane 12a is equal to W1/2.
In this embodiment, when the first back plate 11 and the second back plates 12a and 12b are disposed in an overlapping manner, the first light emitting diode 211a, the second light emitting diode 213a, and the third light emitting diode 213a in one pixel region have the same size. The first light emitting diode 211a, the second light emitting diode 212a, and the third light emitting diode 213a coincide along the center O in the optical path direction. The first light emitting diode 211a, the second light emitting diode 212b, and the third light emitting diode 213a are completely overlapped.
Of course, in practical use, the sizes of the first light emitting diode 211a, the second light emitting diode 213a and the third light emitting diode 213a in one pixel region may also be different, for example, the size of the first light emitting diode 211a is smaller than that of the second light emitting diode 213a, and the size of the second light emitting diode 213a is smaller than that of the third light emitting diode 213 a. Still alternatively, the size of the first light emitting diode 211a is equal to the size of the second light emitting diode 213a, and the size of the second light emitting diode 213a is smaller than the size of the third light emitting diode 213 a. Here, the number of the carbon atoms is not particularly limited.
In the present embodiment, the first monochromatic light is red light, i.e., the first light emitting diode 211 emits red light. The second monochromatic light is green light, i.e., the second light emitting diode 212 emits green light. The third monochromatic light is blue light, i.e., the third light emitting diode 213 emits blue light. Since the transmittance of red light is less than that of green light, the transmittance of green light is less than that of blue light. Therefore, the light emitting diodes are arranged in the above manner, so that the light transmission effect of the display back plate 1 is better, and the display effect is better.
In this embodiment, the first back plate 11 and the second back plate 12a are transparent plates. The second back plate 12b is a non-light-transmitting plate. In other possible embodiments, the second back plate 12b can also be a light-transmitting plate.
In this embodiment, the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are respectively disposed on different backplanes, and compared to the case that the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are all disposed on one backplane, the same pixel amount is set, and the edge distance between the light emitting diodes in the display backplane 1 in this embodiment and the corresponding backplane is larger, so that the display backplane of this embodiment can be manufactured, and cutting and trimming are easier. It is understood that in some possible embodiments, the colors of the light emitted by the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 need not be set according to the present embodiment, and the effect of easy trimming can be achieved.
Please refer to fig. 4, which is a schematic view of a display back plate 1 according to a second embodiment. The display backplane in the second embodiment is different from the display backplane 1 in the first embodiment in that: and the second distance W2 is reserved between every two adjacent light-emitting diodes in the light-emitting diodes on the same backboard. The second separation D2' between the LEDs 21 disposed adjacent the edge E4 of the back sheet and the edge E4 of the back sheet is equal to W2/2. It can be understood that, in the present embodiment, the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are respectively disposed on different backplates, and compared to the case that the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are all disposed on one backplane, the display backplane of the present embodiment has higher pixels under the condition that the pitches between two adjacent light emitting diodes are the same.
Please refer to fig. 5 again, which is a schematic diagram showing a back plate according to a third embodiment. The display back sheet of the third embodiment differs from the display back sheet 1 of the first embodiment in that the first light emitting diodes 211, the second light emitting diodes 212, and the third light emitting diodes 213 are different in size, and the diodes emitting red light are disposed on the second back sheet 12b, the diodes emitting green light are disposed on the second back sheet 12a, the diodes emitting blue light are disposed on the first back sheet 11, and the size of the diodes emitting red light is larger than that of the diodes emitting green light, and the size of the diodes emitting green light is larger than that of the diodes emitting blue light. Since the transmittance of red light is less than that of green light, the transmittance of green light is less than that of blue light. Therefore, the light emitting diodes are arranged in the above manner, so that the light transmission effect of the display back plate 1 is better, and the display effect is better.
Referring to fig. 6, in the present embodiment, the back plate 1 includes a first back plate 11 and a second back plate 12. The first back sheet 11 is provided with light emitting diodes 211 emitting one color light, and the second back sheet 12 is provided with second light emitting diodes 212 and third light emitting diodes 213 emitting two colors, respectively. When the first back plate 11 and the second back plate 12 are disposed in an overlapping manner, the first light emitting diodes 211 are disposed between the second light emitting diodes 212 and the third light emitting diodes 213. In this embodiment, the first back plate 11 and the second back plate 12 are transparent plates; in other possible embodiments, the second back plate 12 can also be a light-transmitting plate. In some possible embodiments, the first backplane 11 is provided with a first light emitting diode 211 and a second light emitting diode 212 respectively emitting two monochromatic lights, and the second backplane 12 is provided with a third light emitting diode 213 (as shown in fig. 7) emitting one monochromatic light. In the present embodiment, the first light emitting diode 211 emits red light.
In this embodiment, the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are respectively disposed on different backplanes, and compared to the case that the first light emitting diode 211, the second light emitting diode 212, and the third light emitting diode 213 are all disposed on one backplane, the same pixel amount is set, and the edge distance between the light emitting diodes in the display backplane 1 in this embodiment and the corresponding backplane is larger, so that the display backplane of this embodiment can be manufactured, and cutting and trimming are easier.
Referring to fig. 8, which is a schematic view of a display device 4 applying the display back panel 1 according to the first embodiment, the display device 4 includes the display back panel 1 and a housing 41 fixing the display back panel 1, and it can be understood that the display device 4 has a display function. The display device 4 includes, but is not limited to, a display, a television, a computer, a notebook computer, a tablet computer, a wearable device, and the like. Since the display device 4 employs the display backplane, even if the size of each pixel area of the display backplane is reduced, the display effect and the package trimming are not affected.
Referring to fig. 9, a first embodiment of a tiled display apparatus 5 using a display backplane is shown. The tiled display device 5 formed by splicing the plurality of display devices 4, in the invention, the number of the display devices in the tiled display device 5 can be two, three, four or the like, and the more the display devices 4 spliced in the tiled display device 5, the better the display effect. And is not limited herein. The tiled display device 5 employs the display backplane. The tiled display device 5 adopts the display back plate of any of the above embodiments, and even if the light emitting diodes are arranged on the display back plate at small intervals, the display back plate can be trimmed easily, so that the narrow intervals between the light emitting diodes and the edges of the back plate are easily set, and the display effect of the tiled display device 5 is better.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, insofar as these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is intended to include these modifications and variations.
The above-mentioned embodiments are only examples of the present invention, which should not be construed as limiting the scope of the present invention, and therefore, the present invention is not limited by the claims.
Claims (1)
1. A display backplane is provided with a plurality of pixel regions, each pixel region comprising three light emitting diodes emitting light of different colors respectively; the display back plate is characterized by comprising at least two back plates, wherein the light-emitting diode emitting light of any one color is arranged on one back plate; the light emitting diodes emitting light of the other two colors are arranged on the rest of the at least two back plates; the at least two back plates are stacked, and the other back plate positioned on one side of one back plate, which is provided with the light-emitting diode, is a light-transmitting plate.
2. The display backplane of claim 1, wherein: the different-color light comprises first monochromatic light, second monochromatic light and third monochromatic light, the at least two backplates comprise a first backplate and two second backplates, the first backplate is provided with a first light-emitting diode for emitting the first monochromatic light, the second backplate is provided with an emitting device, the second monochromatic light and one of a second light-emitting diode and a third light-emitting diode for emitting the third monochromatic light, and the other second backplate is arranged on the second backplate and is provided with the other of the second light-emitting diode and the third light-emitting diode.
3. The display backplane of claim 2, wherein: in one pixel region, center points of the first light emitting diode, the second light emitting diode and the third light emitting diode are located on the same straight line.
4. A display backplane according to any of claims 1-3, wherein: the first light emitting diode, the second light emitting diode and the third light emitting diode are the same in size.
5. A display backplane according to any of claims 1-3, wherein: the size of the first light emitting diode is smaller than that of the second light emitting diode, and the size of the second light emitting diode is smaller than that of the third light emitting diode.
6. The led of claim 2, wherein said first led emits red light, said second led emits green light, and said third led emits blue light, said first led being disposed on said first backplane, and a second backplane on which said second led is disposed being positioned between said first backplane and said second backplane on which said third led is disposed.
7. The display backplane of claim 1, wherein: the different color light includes first monochromatic light, second monochromatic light and third monochromatic light, two at least backplates include a first backplate and a second backplate, first backplate is provided with the first emitting diode who launches first monochromatic light, the second backplate be provided with the second emitting diode who launches second monochromatic light with third emitting diode, in a pixel region, first emitting diode is located the second emitting diode with between the third emitting diode.
8. The display backplane of claim 7, wherein: the first back plate is positioned at one side of the second back plate, where the second light emitting diode and the third light emitting diode are arranged.
9. A display device, comprising: a housing and a display backplane according to any one of claims 1 to 8 disposed within the housing.
10. A tiled display device, comprising: the display device comprises a shell and a plurality of display back plates according to any one of claims 1 to 8, wherein the plurality of display back plates are arranged on the shell and spliced together.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/126677 WO2021120114A1 (en) | 2019-12-19 | 2019-12-19 | Display backplane, display device, and tiled display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113366561A true CN113366561A (en) | 2021-09-07 |
| CN113366561B CN113366561B (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980004137.5A Active CN113366561B (en) | 2019-12-19 | 2019-12-19 | Display back plate, display device and splicing display device |
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| CN (1) | CN113366561B (en) |
| WO (1) | WO2021120114A1 (en) |
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| WO2021120114A1 (en) | 2021-06-24 |
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