CN210223358U - Backlight plate, backlight module and display device - Google Patents
Backlight plate, backlight module and display device Download PDFInfo
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- CN210223358U CN210223358U CN201921360932.1U CN201921360932U CN210223358U CN 210223358 U CN210223358 U CN 210223358U CN 201921360932 U CN201921360932 U CN 201921360932U CN 210223358 U CN210223358 U CN 210223358U
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Abstract
The utility model discloses a backlight lamp plate, backlight module and display device, the backlight lamp plate includes a plurality of back photon lamp plates that the interval set up, the array is provided with a plurality of light emitting component on one side surface of back photon lamp plate; the connecting piece is arranged at the gap between every two adjacent backlight sub-lamp panels, and a second reflecting layer is arranged on one side, away from the backlight sub-lamp panels, of the connecting piece. This application is through covering the connection piece two clearance between the sub-lamp plate of back light will be originally two sub-lamp plate concatenation departments in a poor light and absorb the light and reflect to the front of being shaded through the second reflection stratum on the connection piece, avoided the lamp plate concatenation seam of being shaded uneven bright dark look to imitate the problem to reach the even purpose in a poor light.
Description
Technical Field
The utility model belongs to the technical field of the display technology and specifically relates to a backlight lamp plate, backlight unit and display device are related to.
Background
The traditional Light Emitting Diode (LED) backlight television is limited in the number of LED lamps, and cannot achieve ultra-fine zoning. For better contrast and more accurate area Light control, sub-millimeter Light Emitting diodes (Mini LEDs) or small pitch televisions have emerged. This type of television uses thousands to tens of thousands of LEDs or Chips On Board (COB) to provide the light source for the television. Wherein the Mini-LEDs are made of a two-dimensional array of high-density LEDs. The all-solid-state active light-emitting device has the advantages of low working voltage, high luminous efficiency, quick response, reliable performance, wide working temperature range and the like.
However, the existing backlight panels, backlight modules and display devices still need to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The present invention is made based on the discovery and recognition by the inventors of the following facts and problems:
the inventor finds that, as shown in fig. 1, fig. 1 is a schematic diagram of a splicing of a backlight panel in a conventional sub-millimeter Light emitting diode (Mini LED) or a television with a small lamp pitch, and is limited by a chip mounting or die bonding process and a Printed Circuit Board (PCB) expansion and contraction due to heating, and a certain splicing gap is required for a television panel formed by splicing a plurality of LED panels. As shown in fig. 2, fig. 2 is a schematic diagram of light transmission utilization of a conventional Mini LED or a small lamp pitch television light guide plate, and it can be seen from the diagram that a shadow appears above a splicing position of a backlight plate. In addition, because the LED lamps and the LED lamps have small intervals, the reflecting sheet cannot be assembled on the lamp panel. Therefore, the visual effect problem of uneven brightness is easy to appear in the splicing gap of the backlight panel.
In view of the above-mentioned prior art not enough, an object of the utility model is to provide a backlight lamp plate, backlight unit and display device to solve backlight lamp plate concatenation clearance and easily appear bright dark uneven visual effect problem.
The technical scheme of the utility model as follows:
a backlight panel, comprising:
the backlight lamp comprises a plurality of backlight lamp panels arranged at intervals, wherein a plurality of light-emitting elements are arranged on the surface of one side of each backlight lamp panel in an array manner; the connecting piece is arranged at the gap between every two adjacent backlight sub-lamp panels, and a second reflecting layer is arranged on one side, away from the backlight sub-lamp panels, of the connecting piece.
In a further aspect, the sub-light panel is provided with a plurality of the first reflective layer is provided on the surface of one side of the light emitting element.
The utility model discloses a further setting, first reflection stratum with the second reflection stratum is white reflection of light printing ink layer, phosphor powder printing ink layer or the mixed printing ink layer that forms by white reflection of light printing ink and phosphor powder printing ink mixture respectively independently.
The utility model discloses a further setting, the connection piece sets up adjacent two directly over the back photon lamp plate, the connection piece covers two clearance between the back photon lamp plate, just the both ends and double-phase neighbour of connection piece the edge of back photon lamp plate links up.
The utility model discloses a further setting, the connection piece is with adjacent two the sub-lamp panel in a poor light bonds fixedly.
The utility model discloses a further setting, the interval between the sub-lantern plate of adjacent two backlights is 0.3-5 mm.
In a further arrangement of the utility model, the thickness of the connecting sheet is 0.1-0.2 mm.
The utility model discloses a further setting, the connection piece is made by insulating material, insulating material includes any one of poly terephthalic acid plastics, polybutylene terephthalate plastics, the acrylic plate material.
A backlight module comprises the backlight lamp panel.
A display device comprises the backlight module.
The utility model provides a backlight lamp plate, backlight module and display device, backlight lamp plate includes a plurality of back photon lamp plates that the interval set up, the array is provided with a plurality of light emitting component on one side surface of back photon lamp plate; the connecting piece is arranged at the gap between every two adjacent backlight sub-lamp panels, and a second reflecting layer is arranged on one side, away from the backlight sub-lamp panels, of the connecting piece. This application is through covering the connection piece two clearance between the sub-lamp plate of back light will be originally two sub-lamp plate concatenation departments in a poor light and absorb the light and reflect to the front of being shaded through the second reflection stratum on the connection piece, avoided the lamp plate concatenation seam of being shaded uneven bright dark look to imitate the problem to reach the even purpose in a poor light.
Drawings
Fig. 1 is a schematic diagram of splicing backlight panels in the prior art.
Fig. 2 is a schematic diagram of light transmission utilization of a light guide plate in the prior art.
Fig. 3 is the utility model discloses the concatenation schematic diagram of well backlight plate.
Fig. 4 is a schematic view of the light guide plate of the present invention for utilizing light propagation.
The various symbols in the drawings: 1. a PCB board; 2. an LED lamp; 3. a gap; 4. connecting sheets; 5. a first reflective layer; 6. a second reflective layer.
Detailed Description
The utility model provides a lamp plate, backlight unit and display device are shaded from the sun, display device is the TV set, the lamp plate is shaded from the sun is applicable to time millimeter Emitting Diode (Mini Light Emitting Diode, Mini LED) or little lamp interval TV set, and the problem of bright dark inhomogeneous easily appears in the concatenation clearance of lamp plate concatenation department in a poor Light has been solved to reach the even purpose in a poor Light. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the terms "a" and "an" can mean "one or more" unless the article is specifically limited.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 3 and 4, the present invention provides a preferred embodiment of a backlight panel.
The utility model provides a backlight lamp plate, as shown in fig. 3, backlight lamp plate includes the sub-lamp plate in a poor light that a plurality of intervals set up and sets up adjacent two connection piece 4 of clearance department on the sub-lamp plate in a poor light, the array is provided with a plurality of light emitting component on the surface of one side of the sub-lamp plate in a poor light, connection piece 4 keeps away from one side of the sub-lamp plate in a poor light is provided with second reflection stratum 6. According to the embodiment of the present invention, the specific types of the backlight sub-light Board and the light emitting element are not particularly limited, for example, the backlight sub-light Board may be a Printed Circuit Board (PCB), the light emitting element is an LED lamp 2, and the LED lamp 2 is disposed on the PCB Board 1. Wherein, the interval sets up the concatenation seam that can be the concatenation production for the inflation clearance of reserving, the interval sets up PCB board 1 is provided with a plurality ofly and each other the concatenation together, consequently two adjacent PCB boards 1 have clearance 3, because the clearance 3 of concatenation can absorb light, can lead to the lamp plate in a poor light to appear failure problems such as bright dark inhomogeneous. The utility model discloses explain as the embodiment with two 1 concatenations of PCB board, in this embodiment, please refer to figure 4 together, the concatenation department of two adjacent PCB boards 1 has clearance 3, because of the expansion can take place for PCB board 1 is heated, therefore this clearance 3 is used for the expansion gap of PCB board 1, and is adjacent two the concatenation department of PCB is provided with connection piece 4. The PCB board 1 is provided with a first reflecting layer 5, and the connecting sheet 4 is provided with a second reflecting layer 6. As shown in fig. 4, the utility model discloses a will be two clearance 3 between the PCB board 1 sets up a connection piece 4, and it is positive to the lamp plate in a poor light that the absorbed light of 1 concatenation departments of two PCB boards will be original passes through the second reflection stratum 6 reflection of connection piece 4, has avoided the lamp plate in a poor light to lead to because of the uneven visual effect problem of the bright dark that clearance 3 leads to reach even purpose in a poor light.
Further, the PCB board 1 has a first reflective layer 5 on a surface of a side thereof where the LED lamp 2 is disposed.
Further, the first reflective layer 5 and the second reflective layer 6 are respectively and independently coated or printed with a white reflective ink layer. Specifically, according to the reflection efficiency of first reflection stratum 5 and second reflection stratum 6, the white reflection ink layer of certain concentration ratio coats to the surface of first reflection stratum 5 and second reflection stratum 6, and white reflection ink layer can increase the reflectivity of first reflection stratum 5 and second reflection stratum 6, and then the luminance of the backlight lamp plate that increases. Preferably, the thickness of the first reflective layer 5 and the second reflective layer 6 is in the range of 20 to 30 micrometers, respectively, and preferably, 20 micrometers, respectively. It can be understood that the utility model discloses the mixed printing ink layer that can also adopt phosphor powder printing ink or white printing ink and phosphor powder printing ink mixture to form makes first reflection stratum 5 and second reflection stratum 6 and improves the reflectivity of first reflection stratum 5 and second reflection stratum 6, and then improves the light efficiency.
Further, the connecting sheet 4 is arranged right above two adjacent PCB boards 1, so that the connecting sheet 4 can reflect light better.
Furthermore, the connecting sheet 4 covers the gap 3 between the two PCBs 1, and two ends of the connecting sheet 4 are connected with the edges of the two adjacent PCBs 1, so that the connecting sheet 4 can completely cover the gap 3 between the two PCBs 1, and the installation of other parts is not affected.
Furthermore, the connecting sheet 4 is fixedly bonded with the two adjacent PCB boards 1, so that the connecting sheet 4 is greatly convenient to mount in a bonding and fixing mode, and the mounting space is saved.
Furthermore, the connecting sheet 4 is square strip-shaped, and the connecting sheet 4 in square strip shape enables the connecting sheet 4 to be just connected with the edge of the PCB 1, so that the uneven brightness caused by the partial exposure of the gap 3 between the two PCBs 1 is avoided.
Further, the distance between two adjacent backlight sub-lamp boards is 0.3-5mm, preferably 1 mm.
Further, the thickness of the connecting sheet 4 is 0.1-0.2mm, and the smaller the light mixing distance (OD), the more uneven brightness is likely to occur, and the thickness of the connecting sheet 4 is not preferably too large for the reflectivity of the connecting sheet 4 and the PCB 1 to be consistent, and preferably, the thickness of the connecting sheet 4 is 0.15 mm. It should be noted that the light mixing distance refers to the height from the backlight circuit board PCB to the diffuser plate in the LED backlight module.
Further, the connection piece 4 is made by insulating material, insulating material includes materials such as poly terephthalic acid Plastics (PET), polybutylene terephthalate (PBT) plastics, acrylic board, preferably, the utility model discloses a PET plastics, PET plastics have fine optical property and weatherability, and amorphous PET plastics have good optical transparency, and in addition, PET plastics have good wear-resisting frictional property and dimensional stability and electrical insulation. Specifically, white reflective ink with a certain concentration ratio is coated on the surface of the PET board to form a reflective surface, and then the surface which is not coated with the white reflective ink is bonded with the PCB board 1 to realize the installation of the connecting sheet 4.
Preferably, the areas of the connecting sheet 4 covering the two adjacent PCBs 1 are the same, that is, after the connecting sheet 4 is bonded and fixed to the two adjacent PCBs 1, the contact areas of the connecting sheet 4 and the two PCBs 1 are the same, so that the times of reflection of the light of the second reflective layer 6 on the connecting sheet 4 on the two PCBs 1 are the same.
It can be understood that the joint of two adjacent PCB boards 1 can be the length direction or the width direction of the PCB board 1, and when the number of the PCB boards 1 to be joined reaches 4 or more, the joint of two adjacent PCB boards 1 has the joint of the PCB board 1 in the length direction and also has the joint of the PCB board 1 in the width direction.
The utility model also provides a backlight module, including the light guide plate, still include the backlight lamp plate, the light guide plate sets up directly over the backlight lamp plate, the backlight lamp plate includes the sub-lamp plate in a poor light that a plurality of intervals set up and sets up adjacent two the connection piece 4 of clearance department on the sub-lamp plate in a poor light, the array is provided with a plurality of light emitting component on the surface of one side of backlight lamp plate, connection piece 4 is kept away from one side of backlight lamp plate is provided with second reflection stratum 6. As described above, the details are not repeated herein.
The utility model also provides a display device, display device can be the TV set, and this TV set includes backlight unit, and this backlight unit includes the lamp plate in a poor light, the lamp plate in a poor light that the backlight plate includes a plurality of intervals setting is in adjacent two the connection piece 4 of clearance department on the sub-lamp plate in a poor light, one side of the sub-lamp plate in a poor light array on the surface is provided with a plurality of light-emitting component, connection piece 4 is kept away from one side of the sub-lamp plate in a poor light is provided with second reflection stratum 6. As described above, the details are not repeated herein.
To sum up, a lamp plate, backlight unit and display device are shaded, the lamp plate is shaded that is shaded includes the sub-lamp plate in a poor light that a plurality of intervals set up and sets up adjacent two connection piece 4 of clearance department on the sub-lamp plate in a poor light, one side of the sub-lamp plate in a poor light array on the surface is provided with a plurality of light emitting component, connection piece 4 is kept away from one side of the sub-lamp plate in a poor light is provided with second reflection stratum 6. This application covers two through the connection piece 4 that will coat white reflection of light printing ink clearance 3 between the PCB board 1, will be originally two 1 concatenation departments of PCB board absorbed light reflection to the front of being shaded, solved because of the less unable reflector plate of installing of interval between the LED lamp 2 and lead to the uneven visual effect problem of brightness in the back light board clearance 3 top to reach the even purpose in a poor light. In addition, the light effect can be improved by using white reflective ink, and the visual effect limit of the application can meet the design that the light mixing distance is less than 1 because the thickness of the connecting sheet 4 is thinner.
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. A backlight panel, comprising:
the backlight lamp comprises a plurality of backlight lamp panels arranged at intervals, wherein a plurality of light-emitting elements are arranged on the surface of one side of each backlight lamp panel in an array manner;
the connecting piece is arranged at the gap between every two adjacent backlight sub-lamp panels, and a second reflecting layer is arranged on one side, away from the backlight sub-lamp panels, of the connecting piece.
2. The backlight panel of claim 1, wherein the backlight panel has a first reflective layer on a surface of a side thereof where the plurality of light emitting elements are disposed.
3. The backlight panel of claim 2, wherein the first reflective layer and the second reflective layer are each independently a white reflective ink layer, a phosphor ink layer, or a mixed ink layer formed by mixing white reflective ink and phosphor ink.
4. The backlight lamp panel of claim 1, wherein the connecting piece is disposed right above two adjacent backlight photon lamp panels, the connecting piece covers a gap between the two backlight photon lamp panels, and two ends of the connecting piece are connected to edges of the two adjacent backlight photon lamp panels.
5. The backlight panel of claim 4, wherein the connecting pieces are adhered to two adjacent backlight sub-panels.
6. The backlight lamp panel of claim 1, wherein the distance between two adjacent backlight sub-panels is 0.3-5 mm.
7. The backlight panel of claim 1, wherein the connecting sheet has a thickness of 0.1-0.2 mm.
8. The backlight panel of claim 1, wherein the connecting piece is made of an insulating material, and the insulating material comprises any one of a poly (terephthalic acid) plastic, a poly (butylene terephthalate) plastic, and an acrylic plate material.
9. A backlight module characterized by comprising the backlight panel of any one of claims 1 to 8.
10. A display device comprising the backlight module of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921360932.1U CN210223358U (en) | 2019-08-20 | 2019-08-20 | Backlight plate, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921360932.1U CN210223358U (en) | 2019-08-20 | 2019-08-20 | Backlight plate, backlight module and display device |
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| CN210223358U true CN210223358U (en) | 2020-03-31 |
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| CN201921360932.1U Active CN210223358U (en) | 2019-08-20 | 2019-08-20 | Backlight plate, backlight module and display device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113066392A (en) * | 2021-02-20 | 2021-07-02 | 江苏运鸿辉电子科技有限公司 | LED display panel for removing splicing seams |
| WO2021238533A1 (en) * | 2020-05-28 | 2021-12-02 | 京东方科技集团股份有限公司 | Backlight lamp panel, backlight module, and liquid crystal display |
| WO2022027760A1 (en) * | 2020-08-05 | 2022-02-10 | Tcl华星光电技术有限公司 | Backlight module and display device |
| CN114267261A (en) * | 2021-12-22 | 2022-04-01 | 绵阳惠科光电科技有限公司 | Splicing type backlight module, assembling method thereof and splicing display device |
| CN114399961A (en) * | 2022-03-02 | 2022-04-26 | 苏州华星光电技术有限公司 | Spliced screen and preparation method thereof |
| WO2022088590A1 (en) * | 2020-10-29 | 2022-05-05 | 海信视像科技股份有限公司 | Display device |
| CN114613267A (en) * | 2022-03-09 | 2022-06-10 | 深圳市南极光电子科技股份有限公司 | Backlight lamp plate, backlight module and display |
| WO2023169014A1 (en) * | 2022-03-11 | 2023-09-14 | 绵阳惠科光电科技有限公司 | Backlight module and display apparatus |
| US11841580B2 (en) | 2020-12-30 | 2023-12-12 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Backlight module and display device with a reflector at the seam of two adjacent light boards |
| CN114267261B (en) * | 2021-12-22 | 2024-06-11 | 绵阳惠科光电科技有限公司 | Spliced backlight module, assembling method thereof and spliced display device |
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2019
- 2019-08-20 CN CN201921360932.1U patent/CN210223358U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238533A1 (en) * | 2020-05-28 | 2021-12-02 | 京东方科技集团股份有限公司 | Backlight lamp panel, backlight module, and liquid crystal display |
| US11762237B2 (en) | 2020-05-28 | 2023-09-19 | Boe Technology Group Co., Ltd. | Backlight lamp panel, backlight module, and liquid crystal display |
| WO2022027760A1 (en) * | 2020-08-05 | 2022-02-10 | Tcl华星光电技术有限公司 | Backlight module and display device |
| WO2022088590A1 (en) * | 2020-10-29 | 2022-05-05 | 海信视像科技股份有限公司 | Display device |
| US11841580B2 (en) | 2020-12-30 | 2023-12-12 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Backlight module and display device with a reflector at the seam of two adjacent light boards |
| CN113066392A (en) * | 2021-02-20 | 2021-07-02 | 江苏运鸿辉电子科技有限公司 | LED display panel for removing splicing seams |
| CN114267261A (en) * | 2021-12-22 | 2022-04-01 | 绵阳惠科光电科技有限公司 | Splicing type backlight module, assembling method thereof and splicing display device |
| CN114267261B (en) * | 2021-12-22 | 2024-06-11 | 绵阳惠科光电科技有限公司 | Spliced backlight module, assembling method thereof and spliced display device |
| CN114399961A (en) * | 2022-03-02 | 2022-04-26 | 苏州华星光电技术有限公司 | Spliced screen and preparation method thereof |
| CN114613267A (en) * | 2022-03-09 | 2022-06-10 | 深圳市南极光电子科技股份有限公司 | Backlight lamp plate, backlight module and display |
| CN114613267B (en) * | 2022-03-09 | 2023-09-19 | 深圳市南极光电子科技股份有限公司 | Backlight lamp panel, backlight module and display |
| WO2023169014A1 (en) * | 2022-03-11 | 2023-09-14 | 绵阳惠科光电科技有限公司 | Backlight module and display apparatus |
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