WO2021238533A1 - 背光灯板、背光模组及液晶显示器 - Google Patents

背光灯板、背光模组及液晶显示器 Download PDF

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Publication number
WO2021238533A1
WO2021238533A1 PCT/CN2021/089403 CN2021089403W WO2021238533A1 WO 2021238533 A1 WO2021238533 A1 WO 2021238533A1 CN 2021089403 W CN2021089403 W CN 2021089403W WO 2021238533 A1 WO2021238533 A1 WO 2021238533A1
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WO
WIPO (PCT)
Prior art keywords
splicing
light
teeth
tooth
substrate body
Prior art date
Application number
PCT/CN2021/089403
Other languages
English (en)
French (fr)
Inventor
王鑫
房德利
杨凡
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/627,119 priority Critical patent/US11762237B2/en
Publication of WO2021238533A1 publication Critical patent/WO2021238533A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133601—Illuminating devices for spatial active dimming
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders

Definitions

  • the embodiments of the present disclosure relate to the technical field of electronic equipment, and in particular to a backlight panel, a backlight module, and a liquid crystal display.
  • Mini LED backlight technology is composed of tens of thousands of ultra-small LED lights, which can then be used for dimming partitions. It is more detailed, has higher contrast, and can shorten the mixing distance and reduce the thickness of the whole machine; the Mini LED backlight in the large-size LCD display device is formed by splicing multiple light panels.
  • the embodiment of the present disclosure provides a backlight panel, including:
  • a substrate body, at least one side edge of the substrate body has at least one splicing tooth and at least one splicing groove for accommodating splicing teeth on other substrate bodies, the splicing teeth and the splicing grooves are arranged alternately;
  • At least one light-emitting unit at least one light-emitting unit is arranged in a matrix on the first surface of the substrate body, and at least one light-emitting unit is arranged on the splicing tooth.
  • the distance between the edge of the splicing tooth and the light-emitting unit adjacent to the edge of the splicing tooth is a first distance, and the first distance is less than or equal to that provided on the substrate body. It is half of the distance between adjacent light emitting units excluding the splicing teeth.
  • the adjacent splicing teeth and the splicing groove have the same size along a first direction, and the first direction is directed from the substrate body in the width or length direction of the substrate body A direction away from the substrate body;
  • the light emitting units on the adjacent splicing teeth are regularly arranged along the length or width direction of the substrate body.
  • the sizes of adjacent splicing teeth and splicing grooves along a second direction are equal or unequal, and the second direction is a direction perpendicular to the first direction;
  • the number and arrangement of the light-emitting units in the splicing teeth are the same as the number and the arrangement of the light-emitting units at the splicing grooves on the other substrate bodies matched with the splicing teeth.
  • two opposite edges of the substrate body have the splicing teeth and the splicing grooves, and the splicing teeth on the two edges are arranged in a staggered manner, and the splicing grooves on the two edges are arranged in a staggered manner. Staggered; or
  • the upper circumferential edges of the substrate body all have the splicing teeth and the splicing grooves, and the splicing teeth on the opposite edges are arranged in a staggered arrangement, and the splicing grooves on the opposite edges are arranged in a staggered arrangement.
  • the substrate body is divided into at least one sub-region, each of the sub-regions includes at least one of the light-emitting unit, and the brightness of each of the sub-regions can be adjusted independently;
  • At least one of the sub-regions includes the light emitting unit on at least one of the splicing teeth.
  • At least one of the sub-regions includes a light-emitting unit arranged on one of the splicing teeth and does not include a light-emitting unit arranged other than the splicing tooth.
  • each splicing tooth there are 4 light emitting units in each splicing tooth.
  • the light emitting unit in each splicing tooth receives a first driving current, and the first driving current is greater than the light emitting unit provided on the substrate body except for the splicing tooth The drive current.
  • the light-emitting unit is a sub-millimeter light-emitting diode.
  • the size of the bottom of the splicing groove is larger than the size of the notch
  • the size of the end of the splicing tooth connected to the base body is larger than the size of the end of the splicing tooth away from the base body, so that the splicing tooth fits into the splicing groove.
  • an embodiment of the present disclosure provides a backlight module, which includes at least two any of the aforementioned backlight panels, and at least two of the backlight panels are engaged and spliced with each other through splicing teeth and splicing grooves.
  • embodiments of the present disclosure provide a liquid crystal display including any of the aforementioned backlight modules.
  • FIG. 1 is a schematic structural diagram of a backlight panel provided by an embodiment of the disclosure
  • FIG. 2 is a schematic diagram of another structure of a backlight panel provided by an embodiment of the disclosure.
  • FIG. 3 is a schematic diagram of still another structure of a backlight panel provided by an embodiment of the disclosure.
  • FIG. 4 is a schematic diagram of another structure of the backlight panel provided by the embodiments of the disclosure.
  • FIG. 5 is a schematic diagram of the structure of the backlight panels provided by the embodiments of the disclosure after splicing
  • FIG. 6 is a schematic diagram of another structure after splicing backlight panels provided by the embodiments of the present disclosure.
  • FIG. 7 is a schematic diagram of the shapes of splicing teeth and splicing grooves in the backlight panel provided by an embodiment of the disclosure.
  • the present disclosure provides a backlight panel, which includes a substrate body 1 and at least one light-emitting unit 2, at least one side edge of the substrate body 1 has at least one splicing tooth 11 and at least one Splicing grooves 12 for accommodating splicing teeth 11 on the other substrate body 1, the splicing teeth 11 and the splicing grooves 12 are alternately arranged; at least one of the light-emitting units 2 forms a matrix on the first surface of the substrate body 1 And at least one of the light-emitting units 2 is arranged on the splicing tooth 12.
  • the distance between the edge of the splicing tooth 11 and the light-emitting unit 2 adjacent to the edge of the splicing tooth 11 is a first distance, and the first distance is less than or equal to the substrate body 1 which is arranged on the substrate. Half of the distance between the adjacent light emitting units 2 outside the splicing tooth 11.
  • an embodiment of the present disclosure provides a backlight panel, which includes the substrate body 1 and at least one light-emitting unit 2;
  • the splicing teeth 11 and the splicing grooves 12 are arranged alternately to ensure that there will be no step difference in the splicing seams of adjacent backlight panels (step difference is also a factor that causes shadows), and at least one splicing tooth 11 is provided
  • the light-emitting unit 2 and it is ensured that the distance between the edge of the splicing tooth 11 and the center of the light-emitting unit 2 adjacent to its edge is less than or equal to the distance between the edge of the splicing tooth 11 and the center of the light-emitting unit 2.
  • the half of the distance between the centers of the light-emitting units 2 makes it possible for the splicing teeth 11 on one backlight board to be engaged with the splicing groove 12 on the other backlight board when the two backlight boards are spliced together to ensure the splicing.
  • the distance between the centers of two adjacent light-emitting units 2 at the slit is less than or equal to the distance between the centers of the adjacent light-emitting units 2 provided on the substrate body 1 except for the splicing teeth 11, so that When the adjacent substrate bodies 1 are spliced by the splicing teeth 11 and the splicing groove 12, the light-emitting unit 2 at the seam can effectively illuminate the seam, and the light-emitting unit 2 at the seam will not be separated from the seam. The distance is too large to avoid shadows at the seams and ensure the display effect.
  • the substrate body 1 is a printed circuit board (PCB, Printed Circuit Board), and the substrate body 1 has a rectangular plate-like structure, provides a bearing surface for the light-emitting unit, and implements the light-emitting unit 2 and the driving device
  • the electrical connection of the printed circuit board (PCB, Printed Circuit Board) is not incomprehensible or difficult to implement for those skilled in the art, so it will not be repeated here; when the length of the substrate body 1 When the splicing teeth 11 and the splicing groove 12 are provided on one side edge of the substrate, multiple backlight panels can be spliced parallel to their lengths into larger panels; when the substrate body 1 is in the width direction The splicing teeth 11 and the splicing groove 12 are provided on one side edge, so that multiple backlight panels can be spliced into a larger panel in the direction parallel to their width; if two backlight panels are spliced with each other, each Only one side edge of a backlight board is provided with the splicing groove
  • the light-emitting unit 2 is a mini LED lamp (sub-millimeter light-emitting diode), the size of the mini LED lamp is in the micron level, and at least one of the light-emitting units 2 is arranged in a matrix on the substrate body 1, and emits light adjacently.
  • the distance L between the centers of the units 2 is on the order of millimeters, and the distance between adjacent light-emitting units 2 can be designed and adjusted according to actual needs, which will not be repeated here; for example, when the edge of the splicing tooth 11 is adjacent to When the distance L1 between the centers of the light-emitting units 2 on the edges is less than or equal to the above-mentioned L/2, when two adjacent backlight boards are spliced, the light-emitting unit 2 where the splicing teeth 11 and the splicing groove 12 fit together are connected to other
  • the light-emitting units 2 form an overall matrix of light-emitting units 2, and the distance between the centers 2 of two adjacent light-emitting units at the seam is less than or equal to L, which is greater than the distance between the centers of two adjacent light-emitting units 2 at the seam.
  • the embodiments of the present disclosure can avoid shadows according to the above arrangement; for example, the splicing tooth 11 has three edges.
  • the distance from the center of the light emitting unit 2 in the splicing tooth 11 to the three edges of the splicing tooth should be less than or equal to L/2; when there are two light emitting units 2 in the splicing tooth 11 , Referring to Figure 2, the distance between the center of the upper light emitting unit 2 in the splicing tooth 11 and the upper and right edges of the splicing tooth 11 should be less than or equal to L/2, and the center of the lower light emitting unit 2 is distanced from the splicing tooth The distance between the two edges of the lower side and the right side of 11 should be less than or equal to L/2; when the splicing tooth 11 has four light-emitting units 2 in it, referring to FIG.
  • the splicing teeth 11 are protrusions arranged outwardly on the edge of the substrate body 1, and the splicing grooves 12 are arranged at intervals between two adjacent splicing teeth 11 to form a accommodating space between the two splicing teeth 11
  • the splicing teeth 11 and the splicing grooves 12 it can start from the splicing groove 12 and end by the splicing tooth 11 as shown in FIG.
  • the alternate arrangement of the splicing teeth 11 and the splicing teeth 12 will not be repeated here, as long as the adjacent backlight plates can be correspondingly engaged and spliced, and the splicing teeth 11
  • the shape of the splicing groove 13 is not too limited here, and it may be a regular pattern or an irregular pattern, as long as the adjacent backlight panels can be matched and spliced correspondingly.
  • the number of the light-emitting units 2 provided on the splicing teeth 11 can be adjusted according to actual design needs. For example, referring to FIG. 6, two light-emitting units 2 are provided on each splicing tooth 11 to form a row of two. Or the form of two in a row, here it is necessary to ensure that the light-emitting units 2 in the splicing teeth 11 are in the same row and column form as the other light-emitting units 2 arranged on the splicing teeth 11 on the substrate body 1 The arrangement is performed to ensure that after the splicing of adjacent backlight panels is completed, the light-emitting units 2 at the joints and other light-emitting units form an overall light-emitting unit matrix.
  • the base body 1 is arranged in a form in which splicing teeth 11 and splicing grooves 12 are alternately arranged, and a light-emitting unit 2 is provided on the splicing teeth 11, and the splicing teeth
  • the distance between the light emitting unit 2 adjacent to its edge on the 11 and its edge is set to be less than or equal to half of the distance between the adjacent light emitting units 2 provided on the substrate body 1 except for the splicing teeth 11, so that When the adjacent substrate bodies 1 are spliced by the splicing teeth 11 and the splicing groove 12, the light-emitting unit 2 at the seam can effectively illuminate the seam, and the light-emitting unit 2 at the seam will not be separated from the seam. The distance is too large to avoid shadows at the seams and ensure the display effect.
  • a and B can be included at the same time, and they can exist separately A, B can also exist alone, and can have any of the above three conditions; wherein the inside and outside are based on the inside and outside of the actual installation.
  • an embodiment of the present disclosure proposes a backlight panel.
  • the splicing teeth 11 and the splicing groove 12 are adjacent to each other.
  • the dimensions in the first direction are equal, and the first direction is a direction away from the substrate body 1 from the substrate body 1 in the width or length direction of the substrate body 1;
  • the light emitting units 2 on the adjacent splicing teeth 11 are regularly arranged along the length or width direction of the substrate body 1.
  • the light-emitting units 2 form a new overall light-emitting unit 2 matrix.
  • the The dimensions of the splicing teeth 11 and the splicing groove 12 in the first direction are set to be equal. For example, referring to FIG. 1, when one side edge in the width direction of the backlight plate, that is, the right edge in FIG.
  • the sizes of the splicing teeth 11 and the splicing groove 12 in the length direction of the substrate body 1 are equal, so that when the adjacent backlight panels are spliced, The splicing teeth 11 of the two backlight boards are retracted to the same degree in the splicing groove 12 of each other to ensure that the adjacent splicing teeth 11 in the two backlight boards are regularly arranged along the width direction of the substrate body 1, that is, in the Arranged at intervals on a straight line.
  • an embodiment of the present disclosure proposes a backlight panel.
  • the splicing teeth 11 and the splicing groove 12 are adjacent to each other.
  • the size of the second direction is equal or unequal, and the second direction is a direction perpendicular to the first direction;
  • the number and arrangement of the light-emitting units 2 in the splicing tooth 11 are the same as those of the splicing tooth 11
  • the number and arrangement of the light-emitting units 2 at the splicing groove 12 on the substrate body 1 are the same.
  • the dimensions of the splicing groove 11 and the splicing teeth 12 in the second direction can be set The same can also be set to different.
  • the second direction is perpendicular to the first direction.
  • the splicing teeth 11 and the splicing groove 12 have the same size in the first direction, that is, in the left and right directions of the substrate body 1 in the figure.
  • the splicing teeth 11 and the splicing groove 12 have the same telescopic dimensions, and in the second direction perpendicular to the first direction, that is, the up and down direction in the figure, the splicing teeth 11 and the splicing groove 12 have the same size , You can also refer to Figure 3, the size of the splicing teeth 11 and the splicing groove 12 are not equal; wherein, no matter whether the sizes of the splicing teeth 11 and the splicing groove 12 in the second direction are equal, a piece of backlight must be guaranteed
  • the number and arrangement of the light-emitting units 2 on the splicing teeth 11 of the board are the same as the number and arrangement of the light-emitting units 2 at the splicing groove 12 of the corresponding backlight plate.
  • the splicing When a light-emitting unit 2 is arranged in the tooth 11, it is one row and one column, and the splicing groove 12 on the other backlight plate corresponding to it is also a light-emitting unit 2 (when the splicing tooth 11 and the splicing groove 12 are in When the size in the second direction is equal, the number and arrangement of the light-emitting units 2 of the splicing tooth 11 are the same as the number and arrangement of the light-emitting units 2 at the splicing groove 12 adjacent to the splicing tooth 11), thereby ensuring When the two backlight panels are spliced together, the light-emitting units 2 and other light-emitting units 2 at the joints form an overall light-emitting unit 2 matrix.
  • an embodiment of the present disclosure provides a backlight panel.
  • two opposite edges of the substrate body 1 both have the splicing teeth 11 and The splicing grooves 12 and the splicing teeth 11 on the two edges are arranged in a staggered arrangement, and the splicing grooves 12 on the two edges are arranged in a staggered manner.
  • the two sides of the substrate body 1 The splicing grooves 11 and the splicing teeth 12 are provided on the opposite edges, and in order to ensure the versatility of the production template and production process of the backlight plate, the splicing teeth 11 on the two opposite edges are arranged in a staggered arrangement Yes, the splicing grooves 12 on the two opposite edges are also arranged in a staggered arrangement.
  • the left edge of the substrate body 1 starts from the splicing teeth 11 and ends from the splicing groove 13 from top to bottom.
  • the right edge of the substrate body 1 in Figure 2 starts from the splicing groove 13 and ends from the splicing teeth 11 from top to bottom. Therefore, the two side edges of the backlight plate of the same specification can be Interlocking and splicing with other backlight panels with the same specifications; if multiple backlight panels are spliced along their length or width, only one edge of the backlight panels at both ends is provided with the splicing groove 12 and the splicing teeth 11.
  • the middle backlight plate is provided with the splicing groove 12 and the splicing teeth 11 on the opposite side edges.
  • an embodiment of the present disclosure proposes a backlight panel.
  • the upper peripheral edge of the basic body 1 has the splicing teeth. 11 and the splicing groove 12, and the splicing teeth 11 on the opposite edges are arranged in a staggered arrangement, and the splicing grooves 12 on the opposite edges are arranged in a staggered arrangement.
  • the splicing teeth 11 and the splicing teeth 11 and the splicing are provided on the circumferential edge of the substrate body 1.
  • an embodiment of the present disclosure proposes a backlight panel.
  • the substrate body 1 is divided into at least one sub-region, and each sub-region includes For at least one of the light-emitting units 2, the brightness of each of the sub-regions can be adjusted independently; wherein, at least one of the sub-regions includes at least one of the light-emitting units 2 on the splicing teeth 11.
  • the substrate body 1 is divided into at least one sub Each of the sub-regions includes at least one light-emitting unit 2, and the light-emitting units 2 on at least one sub-area are controlled in zones, and the brightness and darkness of the light-emitting units 2 on each sub-area are individually adjusted; the control method is Local
  • the dimming area dimming method uses a driving device, namely an IC chip or a driving circuit, to control the brightness of the light-emitting unit 2 in at least one sub-area to achieve the effect of energy saving and image quality enhancement.
  • At least one sub-area includes at least one light-emitting unit 2 on the splicing tooth 11, that is to say, a sub-area can separately include a light-emitting unit 2 on the splicing tooth 11, and It may include a splicing tooth 11 and light-emitting units 2 on other areas;
  • At least one of the sub-regions includes the light-emitting unit 2 provided on one splicing tooth 11 and does not include the light-emitting unit 2 provided other than the splicing tooth 11, that is, when one When the sub-area only includes the light-emitting unit 2 on one splicing tooth 11 and does not include the light-emitting units 2 of other areas, the light-emitting unit 2 on each splicing tooth 11 is used as a sub-area for independent control; when the light-emitting drive is performed, each light-emitting unit 2
  • the light emitting units 2 in each of the splicing teeth 11 receive a first driving current, and the first driving current is greater than the driving current of the light emitting units 2 provided on the substrate body 1 except for the splicing teeth 11, so that It is ensured that the brightness of the light-emitting unit 2 on the splicing tooth 11 is greater than that of other light-emitting units, thereby ensuring that no shadows are generated at the seam;
  • each splicing tooth 11 receives the same larger driving current at the same time; for example, referring to Fig. 4, each splicing tooth 11 has four light-emitting units 2 in it, then each splicing tooth 11 The four light-emitting units 2 inside receive the same large driving current at the same time.
  • the light-emitting unit 2 in the splicing tooth 11 and the light-emitting unit 2 around the splicing groove 12 adjacent to the splicing tooth 11 serve as a sub-area, and the light-emitting unit 2 receives a first driving current, and the first driving current is greater than that of the substrate.
  • the main body 1 is provided with the driving current of the light-emitting unit 2 except for the splicing teeth 11, so as to ensure that the brightness of the light-emitting unit 2 on the splicing tooth 11 is greater than that of other light-emitting units, thereby ensuring that there is no Shadow;
  • the splicing tooth 11 has a light-emitting unit 2 in it, and the splicing groove 12 adjacent to the splicing tooth 11 has a light-emitting unit 2, then the two light-emitting units pass through the corner
  • the light-emitting units 2 in the 7-shaped arrangement are electrically connected to form a 7-shaped arrangement, and the three light-emitting units 2 in the 7-shaped arrangement simultaneously receive the same larger driving current; among them, the light-emitting unit 2 in the splicing tooth 11 and the surrounding of the splicing groove 12 emit light.
  • How the unit 2 is electrically connected is not too limited here, as long as the brightness of the light-emitting unit 2
  • an embodiment of the present disclosure provides a backlight panel.
  • the size of the groove bottom of the splicing groove 12 is larger than the size of the notch;
  • the size of the end of the splicing tooth 11 connected to the substrate body 1 is larger than the size of the end of the splicing tooth 11 away from the substrate body 1, so that the splicing tooth 11 and the splicing groove 12 can be engaged and spliced.
  • the splicing groove 12 is set such that the size of the groove bottom is larger than that of the groove bottom.
  • the splicing teeth 11 are set in a shape with a large end and a small end to ensure that the two adjacent substrate bodies 1 pass through the splicing teeth 11 and splicing in the direction away from the substrate body 1.
  • the grooves 12 are locked to each other and cannot move; for example, as shown in Fig.
  • the splicing groove 12 is a dovetail groove, and the splicing tooth 11 is a dovetail-shaped bump that fits the dovetail groove; or, the splicing groove 12 It is a trapezoid (circle, refer to the puzzle shape), and the splicing tooth 11 is the opposite trapezoidal (circle, refer to the puzzle shape) bump; of course, the shape of the splicing tooth 11 and the splicing groove 12 can also be as shown in Figure 1
  • the regular rectangles shown in -5 belong to the scope of protection of the present disclosure, and the above-mentioned setting method with a large end and a small end is a preferred setting method.
  • An embodiment of the present disclosure provides a backlight module, which includes at least two backlight panels described in one embodiment, and at least two of the backlight panels are engaged and spliced with each other through splicing teeth and splicing grooves.
  • the backlight board in this embodiment may directly adopt the backlight board described in an embodiment, and at least two of the backlight boards are engaged and spliced with each other on the back board, and they are respectively It is fixed to the backplane, and the fixation here can be bolted or adhesively fixed, which is not difficult for those skilled in the art to achieve, and will not be repeated here; fix the backlight board behind the backplane Cover the optical film on the side of the backlight plate away from the back plate, and display the point light source on the backlight plate in the form of luminescence on the entire surface, and then set the display screen on the side of the optical film away from the back plate to form a complete
  • the settings of the backlight module, the optical film and the display screen are not difficult to achieve or understand for those skilled in the art, so I won’t repeat them here; the occlusal splicing of multiple backlight panels on the back panel can be A large-size backlight module is formed.
  • the embodiment of the present disclosure provides a backlight module, which includes at least two of the different light plates, and the two are arranged alternately with the splicing teeth 11 on at least one side edge of the substrate body 1.
  • a backlight module which includes at least two of the different light plates, and the two are arranged alternately with the splicing teeth 11 on at least one side edge of the substrate body 1.
  • the light-emitting unit 2 at the seam can effectively illuminate the seam without causing the light-emitting unit 2 at the seam to be too far away from the seam, thereby avoiding shadows at the seam and ensuring the display effect.
  • An embodiment of the present disclosure provides a liquid crystal display, which includes the backlight module described in another embodiment.
  • the backlight module in this embodiment is the backlight module described in another embodiment, which may be a large-size backlight module or a super-large backlight module
  • the liquid crystal display in this embodiment may be a large-size liquid crystal display or a super-large liquid crystal display.
  • the backlight panel, backlight module, and liquid crystal display proposed by the embodiments of the present disclosure have at least the following beneficial effects: in order to solve the problem that the backlight in the existing large-size LCD display is formed by splicing multiple light panels, adjacent light panels There are shadows at the splicing place, which affects the display effect.
  • At least one side edge of the base body is set in the form of splicing teeth and splicing grooves alternately, and a light-emitting unit is provided on the splicing teeth,
  • the distance between the light-emitting units adjacent to the edge of the splicing tooth and the edge is set to be less than or equal to half of the distance between the adjacent light-emitting units provided on the substrate body except for the splicing tooth, so that adjacent substrates

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Abstract

一种背光灯板、背光模组及液晶显示器，背光灯板包括基板本体(1)和至少一个发光单元(2)，基板本体(1)的至少一侧边缘具有至少一个拼接齿(11)和至少一个用于容纳其他基板本体(1)上拼接齿(11)的拼接槽(12)，拼接齿(11)与拼接槽(12)交替设置；至少一个发光单元(2)在基板本体(1)的第一面上呈矩阵式排列，且至少一个发光单元(2)设置在拼接齿(11)上。基板本体（1）分为至少一个子区域，每个子区域包括至少一个拼接齿（11）上的发光单元（2）且每个子区域的亮度能够独立调节。拼接槽（12）的槽底尺寸大于槽口尺寸，拼接齿（11）连接于基板本体（1）一端的尺寸大于远离基板本体（1）一端的尺寸。还包括具有至少两个背光灯板的背光模组，以及具有背光模组的液晶显示器。

Description

背光灯板、背光模组及液晶显示器
本申请要求于2020年5月28日提交中国专利局、申请号为202020939369.X、发明名称为“背光灯板、背光模组及液晶显示器”的中国专利申请的优先权，其内容应理解为通过引用的方式并入本申请中。
技术领域
本公开实施例涉及电子设备技术领域，尤其涉及一种背光灯板、背光模组及液晶显示器。
背景技术
随着人们对电子设备显示效果要求的提升，尤其是LCD显示设备，Mini LED背光技术应运而生，Mini LED背光技术是利用几万颗超小尺寸的LED灯组成，进而可以将调光分区做得更细致，具有更高的对比度，并且能够缩短混光距离，降低整机厚度；大尺寸LCD显示设备中Mini LED背光是通过将多块灯板拼接而成的。
但是，在灯板拼接过程中，相邻两块灯板的拼接处会产生拼缝，使得拼缝处相邻两个Mini LED的间距变大，Mini LED的光照范围有限不足以覆盖拼缝处，导致拼缝处产生阴影，影响后期显示的问题。
发明内容
以下是对本公开详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本公开主要提供如下技术方案：
本公开实施例提供了一种背光灯板，包括：
基板本体，所述基板本体的至少一侧边缘具有至少一个拼接齿和至少一个用于容纳其他基板本体上拼接齿的拼接槽，所述拼接齿与所述拼接槽交替 设置；
至少一个发光单元，至少一个所述发光单元在所述基板本体的第一面上呈矩阵式排列，且至少一个所述发光单元设置在所述拼接齿上。
在一示例性的实施方式中，所述拼接齿边缘和与所述拼接齿边缘相邻的所述发光单元之间的距离为第一距离，所述第一距离小于等于所述基板本体上设置于除所述拼接齿外的相邻所述发光单元之间距离的一半。
在一示例性的实施方式中，相邻所述拼接齿和所述拼接槽沿第一方向的尺寸相等，所述第一方向为在所述基板本体宽度或长度方向上由所述基板本体指向远离所述基板本体的方向；
相邻所述拼接齿上的所述发光单元沿所述基板本体的长度或宽度方向规则排列。
在一示例性的实施方式中，相邻所述拼接齿和所述拼接槽沿第二方向的尺寸相等或不相等，所述第二方向为垂直所述第一方向的方向；
所述拼接齿内的发光单元的数量以及排列方式与配合于所述拼接齿的其他基板本体上拼接槽处发光单元的数量以及排列方式相同。
在一示例性的实施方式中，所述基板本体上相对的两边缘均具有所述拼接齿和所述拼接槽，且两边缘上的所述拼接齿交错排列，两边缘上的所述拼接槽交错排列；或者
所述基板本体上周向边缘均具有所述拼接齿和所述拼接槽，且相对的边缘上的拼接齿交错排列，相对的边缘上的拼接槽接错排列。
在一示例性的实施方式中，所述基板本体分为至少一个子区域，每个所述子区域内包括至少一个所述发光单元，每个所述子区域的亮度能够独立调节；
其中，至少一个所述子区域包括至少一个所述拼接齿上的的所述发光单元。
在一示例性的实施方式中，至少一个所述子区域包括设置在一个所述拼接齿上的发光单元且不包括设置在除该所述拼接齿外的发光单元。
在一示例性的实施方式中，每个所述拼接齿内具有4个所述发光单元。
在一示例性的实施方式中，每个所述拼接齿内的所述发光单元接收第一驱动电流，所述第一驱动电流大于所述基板本体上设置于除所述拼接齿外的发光单元的驱动电流。
在一示例性的实施方式中，所述发光单元为亚毫米发光二极管。
在一示例性的实施方式中，所述拼接槽的槽底尺寸大于其槽口尺寸；
所述拼接齿连接于所述基板本体一端的尺寸大于其远离所述基板本体一端的尺寸，以使所述拼接齿与所述拼接槽相适配的咬合拼接。
另一方面，本公开实施例提供一种背光模组，包括至少两个前述任意的背光灯板，至少两个所述背光灯板通过拼接齿和拼接槽相互咬合拼接。
另一方面，本公开实施例提供一种液晶显示器，包括前述任意的背光模组。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
图1为本公开实施例提供的背光灯板的结构示意图；
图2为本公开实施例提供的背光灯板的另一种结构示意图；
图3为本公开实施例提供的背光灯板的再一种结构示意图；
图4为本公开实施例提供的背光灯板的又一种结构示意图；
图5为本公开实施例提供的背光灯板拼接后的结构示意图；
图6为本公开实施例提供的背光灯板拼接后的另一种结构示意图；
图7为本公开实施例提供的背光灯板中拼接齿和拼接槽的形状示意图。
具体实施方式
下面结合附图和实施例对本公开的具体实施方式作进一步详细描述。以下实施例用于说明本公开，但不用来限制本公开的范围。需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互任意组合。
在下述说明中，不同的“一实施例”或“实施例”指的不一定是同一实施例。此外，一或多个实施例中的特定特征、结构、或特点可由任何合适形式组合。
一实施例
参考附图1和附图5，本公开提供的一种背光灯板，其包括基板本体1和至少一个发光单元2，所述基板本体1的至少一侧边缘具有至少一个拼接齿11和至少一个用于容纳其他基板本体1上拼接齿11的拼接槽12，所述拼接齿11与所述拼接槽12交替设置；至少一个所述发光单元2在所述基板本体1的第一面上呈矩阵式排列，且至少一个所述发光单元2设置在所述拼接齿12上。
其中，所述拼接齿11边缘和与所述拼接齿11边缘相邻的所述发光单元2之间的距离为第一距离，所述第一距离小于等于所述基板本体1上设置于除所述拼接齿11外的相邻所述发光单元2之间距离的一半。
在一示例性的实施方式中，本公开实施例提供一种背光灯板，其包括所述基板本体1和至少一个所述发光单元2；其通过在所述基板本体1的至少一侧边缘上交替设置所述拼接齿11和所述拼接槽12，保证相邻背光灯板在拼接时拼缝处不会出现段差(段差也是造成阴影的因素)，并且在所述拼接齿11上设置至少一个所述发光单元2，且保证拼接齿11的边缘和相邻于其边缘的发光单元2的中心之间的距离小于等于所述基板本体1上设置于除所述拼接齿11外的相邻所述发光单元2的中心之间距离的一半，使得当两块背光灯板进行拼接的时候，一块背光灯板上拼接齿11能够与另一块背光灯板上的拼接槽12相互咬合拼接，保证拼缝处相邻两所述发光单元2的中心之间的距离小于等于所述基板本体1上设置于除所述拼接齿11外的相邻所述发光单元2的中心之间的距离，从而使得相邻基板本体1通过所述拼接齿11和所述拼接槽12进行拼接时，拼缝处的发光单元2能够对拼缝处进行有效照亮，不会造成拼缝处发光单元2距离拼缝距离过大，从而避免拼缝处产生阴影，保证显示效果。
其中，所述基板本体1为印制电路板(PCB，Printed Circuit Board)，所述基板本体1呈矩形板状结构，为所述发光单元提供承载面，并且实现所述 发光单元2与驱动装置的电连接，印制电路板(PCB，Printed Circuit Board)对于本领域技术人员来说并不是难以理解或难以实现的，因而在此不做过多赘述；当所述基板本体1的长度方向上的一侧边缘设置所述拼接齿11和所述拼接槽12，则多块背光灯板则可以在平行其长度方向上进行拼接成较大灯板；当所述基板本体1的宽度方向上的一侧边缘设置所述拼接齿11和所述拼接槽12，则多块背光灯板则可以在平行其宽度方向上进行拼接成较大的灯板；若两块背光灯板相互拼接，则每块背光灯板只有一侧边缘设置所述拼接槽12和所述拼接齿11，若多块背光灯板相互沿其长度或宽度方向拼接，则两端的背光灯板上只有一侧边缘设置所述拼接槽12和所述拼接齿11，中间的背光灯板则是相对的两侧边缘均设有所述拼接槽12和所述拼接齿11。
其中，所述发光单元2为mini LED灯(亚毫米发光二极管)，mini LED灯的尺寸规格在微米级，至少一个所述发光单元2在所述基板本体1上呈矩阵式排列，相邻发光单元2的中心之间的距离L为毫米级，相邻发光单元2之间的距离可以根据实际需要进行设计调整，在此不做过多赘述；例如，当拼接齿11的边缘与相邻于其边缘的发光单元2的中心之间的距离L1小于等于上述L/2时，则在相邻两所述背光灯板进行拼接时，拼接齿11与拼接槽12配合处的发光单元2与其他发光单元2形成整体发光单元2矩阵，拼缝处相邻两发光单元的中心2之间的距离则小于等于L，则相比于拼缝处相邻两发光单元2的中心之间的距离大于L产生阴影的问题，本公开实施例按照上述设置方式则可以避免产生阴影；例如，所述拼接齿11具有三个边缘，当所述拼接齿11内具有一个所述发光单元2时，参考附图1，则拼接齿11内所述发光单元2的中心到所述拼接齿的三个边缘的距离都要小于等于L/2；当所述拼接齿11内具有2个所述发光单元2时，参考附图2，则拼接齿11内上侧发光单元2的中心距离拼接齿11上侧和右侧两个边缘的距离都要小于等于L/2，下侧发光单元2的中心距离拼接齿11下侧和右侧两个边缘的距离都要小于等于L/2；当所述拼接齿11内具有4个发光单元2时，参考附图4，拼接齿11内左侧两个发光单元2的中心距离拼接齿11上下侧边缘的距离小于等于L/2，右侧两个发光单元2的中心距离拼接齿上、下、右侧边缘的距离小于等于L/2；其他设置形式同理，在此不再一一列举。
其中，所述拼接齿11则为在所述基板本体1边缘向外设置的突出部，所述拼接槽12则是相邻两所述拼接齿11间隔设置，在二者之间形成的容纳空间，当然了所述拼接齿11和所述拼接槽12的交替设置下，可以是如图1所示的由拼接槽12开始，由拼接齿11结束，也可以是由拼接齿11开始由拼接槽12结束，所述拼接齿11和所述拼接齿12的交替设置方式在此不做过多赘述，只要实现相邻的背光灯板能够对应的进行配合咬合拼接即可，并且所述拼接齿11和所述拼接槽13的形状在此不做过多限制，可以是规则图形也可以是不规则图形，只要实现相邻的背光灯板能够对应的进行配合咬合拼接即可。
其中，所述拼接齿11上设置所述发光单元2的数量可以根据实际设计需要进行调整，例如：参考附图6，每个拼接齿11上设置2个所述发光单元2，形成一列2个或一行2个的形式，此处需要保证所述拼接齿11内的发光单元2按照与所述基板本体1上设置于出所述拼接齿11上的其他发光单元2相同的行和列的形式进行排列，保证相邻背光灯板在拼接完成后，拼缝处的发光单元2与其他发光单元形成整体发光单元矩阵。
根据上述所列，本公开中的背光灯板，将基体本体1的至少一侧边缘设置为拼接齿11和拼接槽12交替设置的形式，并且在拼接齿11上设置发光单元2，将拼接齿11上相邻其边缘的发光单元2与其边缘之间的距离设置为小于等于所述基板本体1上设置于除所述拼接齿11外的相邻所述发光单元2之间距离的一半，使得相邻基板本体1通过所述拼接齿11和所述拼接槽12进行拼接时，拼缝处的发光单元2能够对拼缝处进行有效照亮，不会造成拼缝处发光单元2距离拼缝距离过大，从而避免拼缝处产生阴影，保证显示效果。
本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以理解为：可以同时包含有A与B，可以单独存在A，也可以单独存在B，能够具备上述三种任一中情况；其中所述内外以实际安装中的内外为参考。
在一示例性的实施方式中，如图1所示，本公开的一个实施例提出的一种背光灯板，在示例性的实施中，相邻所述拼接齿11和所述拼接槽12沿第 一方向的尺寸相等，所述第一方向为在所述基板本体1宽度或长度方向上由所述基板本体1指向远离所述基板本体1的方向；
相邻所述拼接齿11上的所述发光单元2沿所述基板本体1的长度或宽度方向规则排列。
在一示例性的实施方式中，为了实现两相邻背光灯板中的拼接齿11和拼接槽12配合时，所以发光单元2形成新的整体发光单元2矩阵，本实施例中，将所述拼接齿11和所述拼接槽12沿第一方向的尺寸设置为相等的，例如，参考附图1，当所述背光灯板宽度方向上的一侧边缘即图1中的右侧边缘设置所述拼接齿11和所述拼接槽12时，所述拼接齿11和所述拼接槽12在所述基板本体1长度方向上的尺寸是相等的，进而使得相邻所述背光灯板拼接时，两块背光灯板的拼接齿11在对方的拼接槽12内缩进的程度相同，保证两块背光灯板中相邻的拼接齿11在沿所述基板本体1的宽度方向上规则排列即在一条直线上间隔排列。
在一示例性的实施方式中，如图3所示，本公开的一个实施例提出的一种背光灯板，在示例性的实施中，相邻所述拼接齿11和所述拼接槽12沿第二方向的尺寸相等或不相等，所述第二方向为垂直所述第一方向的方向；所述拼接齿11内的发光单元2的数量以及排列方式与配合于所述拼接齿11的其他基板本体1上拼接槽12处发光单元2的数量以及排列方式相同。
在一示例性的实施方式中，为了实现本公开实施例中所述背光灯板的多样性，本实施例中，将所述拼接槽11和所述拼接齿12在第二方向的尺寸可以设置为相同的也可以设置为不同的，第二方向垂直第一方向，例如：参考附图1，第一方向上拼接齿11和拼接槽12的尺寸相等，即在图中基板本体1的左右方向的所述第一方向上拼接齿11和拼接槽12的伸缩尺寸相等，则在垂直第一方向的第二方向即图中的上下方向，所述拼接齿11和所述拼接槽12的尺寸相等，也可以参考附图3，拼接齿11和拼接槽12的尺寸不相等；其中，无论所述拼接齿11和所述拼接槽12在第二方向上的尺寸是否相等，都要保证一块背光灯板的拼接齿11上的发光单元2的数量和排列方式与其对应的背光灯板的拼接槽12处发光单元2的数量和排列方式相同，例如：参考附图1和附图2，所述拼接齿11内设置一个发光单元2时，则为一行一列， 则与其对应的另一块背光灯板上的拼接槽12处则也是一个发光单元2(当所述拼接齿11和所述拼接槽12在第二方向上尺寸相等时，所述拼接齿11的发光单元2的数量和排列方式则与所述拼接齿11相邻的拼接槽12处的发光单元2的数量和排列方式相同)，从而保证两背光灯板拼接在一起时，拼缝处的发光单元2与其他发光单元2形成整体发光单元2矩阵。
在一示例性的实施方式中，参考附图2，本公开实施例提供一种背光灯板，在示例性的实施中，所述基板本体1上相对的两边缘均具有所述拼接齿11和所述拼接槽12，且两边缘上的所述拼接齿11交错排列，两边缘上的所述拼接槽12交错排列。
在一示例性的实施方式中，为了实现所述背光灯板能够在同一方向的两侧同时与其他背光灯板进行咬合拼接形成大尺寸显示器，本实施例中，在所述基板本体1的两相对的边缘上均设置所述拼接槽11和所述拼接齿12，并且，为了保证背光灯板的制作模板和制作流程的通用性，将两相对边缘上的所述拼接齿11设置为交错排列的，两相对边缘上的所述拼接槽12也设置为交错排列的，例如：附图2中，所述基板本体1的左侧边缘由上至下是由拼接齿11开始由拼接槽13结束的，则图2中所述基板本体1的右侧边缘由上至下则是由所述拼接槽13开始由所述拼接齿11结束的，因而同一规格的背光灯板的两侧边缘则能够与其他与其规格相同的背光灯板相互咬合拼接；若多块背光灯板相互沿其长度或宽度方向拼接，则两端的背光灯板上只有一侧边缘设置所述拼接槽12和所述拼接齿11，中间的背光灯板则是相对的两侧边缘均设有所述拼接槽12和所述拼接齿11。
在一示例性的实施方式中，参考附图3，本公开的一个实施例提出的一种背光灯板，在示例性的实施中，所述基本本体1上周向边缘均具有所述拼接齿11和所述拼接槽12，且相对的边缘上的拼接齿11交错排列，相对的边缘上的拼接槽12接错排列。
在一示例性的实施方式中，为了实现多个背光灯板相互咬合拼接能够形成大尺寸显示，本实施例中在所述基板本体1的周向边缘均设置所述拼接齿11和所述拼接槽12，即在PCB板的四个边缘上，两两相对的交错的进行设置所述拼接齿11，并两两相对的交错的设置所述拼接槽12，详细说明参照上 述说明，在此不做过多赘述；进而能够在同一背光灯板的周向同时向外拼接其他背光灯板以形成大尺寸显示器；若多块背光灯板相互拼接，则处于边缘的背光灯板上只有一侧边缘设置所述拼接槽12和所述拼接齿11，中间的背光灯板则是周向边缘均设有所述拼接槽12和所述拼接齿11。
在一示例性的实施方式中，本公开的一个实施例提出的一种背光灯板，在示例性的实施中，所述基板本体1分为至少一个子区域，每个所述子区域内包括至少一个所述发光单元2，每个所述子区域的亮度能够独立调节；其中，至少一个所述子区域包括至少一个所述拼接齿11上的所述发光单元2。
在一示例性的实施方式中，为了实现相邻背光灯板拼缝处的亮度较大，以防止形成阴影并且增强画质的目的，本实施例中将所述基板本体1分为至少一个子区域，每个所述子区域至少包括一个所述发光单元2，对至少一个子区域上的发光单元2进行分区控制，单独调节每个子区域上发光单元2的亮暗程度；该控制方式为Local Dimming区域调光方式，通过一个驱动装置即IC芯片或驱动电路，对至少一个子区域内的所述发光单元2分别控制明暗度，来达到节能且增强画质的效果，该设置方式并不是本领域技术人员难以实现或难以理解的，在此不做过多赘述；其中，每个所述子区域内的发光单元2的数量可以根据实际需要进行调整，例如：1个、4个、6个、9个等等；本实施例中至少一个子区域包括至少一个所述拼接齿11上的所述发光单元2，也就是说一个子区域可以单独包括一个拼接齿11上的发光单元2，也可以包括一个拼接齿11以及其他区域上的发光单元2；
在一示例性的实施方式中，至少一个所述子区域包括设置在一个所述拼接齿11上的发光单元2且不包括设置在除该所述拼接齿11外的发光单元2，即当一个子区域只包括一个拼接齿11上的发光单元2且不包括其他区域的发光单元2时，每个拼接齿11上的发光单元2即作为一个子区域进行单独控制；在进行发光驱动时，每个所述拼接齿11内的所述发光单元2接收第一驱动电流，所述第一驱动电流大于所述基板本体1上设置于除所述拼接齿11外的发光单元2的驱动电流，从而保证所述拼接齿11上的发光单元2的亮度大于其他发光单元的亮度，进而保证在拼缝处不会产生阴影；例如：参考附图2，所述拼接齿11内设有2颗发光单元2，则拼接齿11内的2颗发光单元2则 同时接受同一较大驱动电流；例如：参考附图4，每个拼接齿11内具有4个所述发光单元2，则每个拼接齿11内的4个发光单元2同时接收同一较大驱动电流。
或者，所述拼接齿11内的发光单元2和与其相邻的拼接槽12周边的发光单元2作为一个子区域，上述发光单元2接收第一驱动电流，所述第一驱动电流大于所述基板本体1上设置于除所述拼接齿11外的发光单元2的驱动电流，从而保证所述拼接齿11上的发光单元2的亮度大于其他发光单元的亮度，进而保证在拼缝处不会产生阴影；例如：参考附图1，所述拼接齿11内具有1颗发光单元2，与该拼接齿11相邻的拼接槽12周边具有1颗发光单元2，则上述2颗发光单元通过拐角处的发光单元2电连接即形成7字型排布，7字型排布的3颗发光单元2同时接受同一较大驱动电流；其中，拼接齿11内的发光单元2和拼接槽12周边的发光单元2如何进行电连接在此不做过多限制，只要保证在拼缝处的发光单元2的亮度较大即可。
在一示例性的实施方式中，参考附图7，本公开实施例提供的一种背光灯板，在示例性的实施中，所述拼接槽12的槽底尺寸大于其槽口尺寸；
所述拼接齿11连接于所述基板本体1一端的尺寸大于其远离所述基板本体1一端的尺寸，以使所述拼接齿11与所述拼接槽12相适配的咬合拼接。
在一示例性的实施方式中，为了避免多个所述背光灯板在背板上进行咬合拼接后出现窜动的情况，本实施例中将所述拼接槽12设置为槽底的尺寸大于槽口的尺寸，对应的将所述拼接齿11设置为一端大一端小的形状，以保证在基板本体1向远离基板本体1的方向上相邻两个所述基板本体1通过拼接齿11和拼接槽12相互卡接限位，无法发生窜动；例如：图7所示，拼接槽12为燕尾槽，则拼接齿11为与燕尾槽相适配的燕尾状凸块；或者是，拼接槽12为梯形(圆形，参考拼图形状)，拼接齿11则为与其相反的梯形(圆形，参考拼图形状)凸块；当然所述拼接齿11和所述拼接槽12的形状也可以是图1-5中所示的规则矩形，均属于本公开的保护范围，上述一端大一端小的设置方式为一种优选的设置方式。
又一实施例
本公开实施例提供一种背光模组，其包括至少两个一实施例所述的背光 灯板，至少两所述背光灯板通过拼接齿和拼接槽相互咬合拼接。
在一示例性的实施方式中，本实施例中的背光灯板可以直接采用一实施例所述的背光灯板，至少两个所述背光灯板在所述背板上相互咬合拼接，并分别固定于所述背板，此处的固定可以是螺栓固定或者粘接固定，对于本领域技术人员来说并不是难以实现的，在此不做过多赘述；将背光灯板固定于背板后则在背光灯板背离背板的一侧覆盖光学膜材，将背光灯板上的点光源展示为整面发光的形式，而后在光学膜材背离背板的一侧设置显示屏幕即形成完整的背光模组，光学膜材和显示屏的设置对于本领域技术人员来说并不是难以实现或难以理解的，在此不做过多赘述；多块背光灯板在背板上的咬合拼接则可以形成大尺寸的背光模组。
根据上述所列，本公开实施例提供一种背光模组，其包括至少两个所述别光灯板，二者通过在所述基板本体1的至少一侧边缘上交替设置所述拼接齿11和所述拼接槽12，保证相邻背光灯板在拼接时拼缝处不会出现段差(段差也是造成阴影的因素)，并且保证拼接齿11的边缘和相邻于其边缘的发光单元2之间的距离小于等于所述基板本体1上设置于除所述拼接齿11外的相邻所述发光单元2之间距离的一半，实现拼缝处相邻两所述发光单元2之间的距离小于等于所述基板本体1上设置于除所述拼接齿11外的相邻所述发光单元2之间的距离，从而使得相邻基板本体1通过所述拼接齿11和所述拼接槽12进行拼接时，拼缝处的发光单元2能够对拼缝处进行有效照亮，不会造成拼缝处发光单元2距离拼缝距离过大，从而避免拼缝处产生阴影，保证显示效果。
再一实施例
本公开实施例提供一种液晶显示器，其包括又一实施例所述的背光模组。
在一示例性的实施方式中，本实施例中所述背光模组即为又一实施例所述的背光模组，其可以是大尺寸的背光模组，也可以是超大尺寸的背光模组，进而本实施例中的液晶显示器则可以是大尺寸的液晶显示器，也可以是超大尺寸的液晶显示器。
综上，本公开实施例提出的一种背光灯板、背光模组及液晶显示器至少具有以下有益效果：为了解决现有大尺寸LCD显示器中背光由多块灯板拼接 而成，相邻灯板的拼接处存在阴影，影响显示效果的问题，本公开中的背光灯板，将基体本体的至少一侧边缘设置为拼接齿和拼接槽交替设置的形式，并且在拼接齿上设置发光单元，将拼接齿上相邻其边缘的发光单元与其边缘之间的距离设置为小于等于所述基板本体上设置于除所述拼接齿外的相邻所述发光单元之间距离的一半，使得相邻基板本体通过所述拼接齿和所述拼接槽进行拼接时，拼缝处的发光单元能够对拼缝处进行有效照亮，不会造成拼缝处发光单元距离拼缝距离过大，从而避免拼缝处产生阴影，保证显示效果。
以上所述，仅是本公开的较佳实施例而已，并非对本公开作任何形式上的限制，依据本公开的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本公开技术方案的范围内。

Claims (13)

  1. 一种背光灯板，包括：
    基板本体，所述基板本体的至少一侧边缘具有至少一个拼接齿和至少一个用于容纳其他基板本体上拼接齿的拼接槽，所述拼接齿与所述拼接槽交替设置；
    至少一个发光单元，至少一个所述发光单元在所述基板本体的第一面上呈矩阵式排列，且至少一个所述发光单元设置在所述拼接齿上。
  2. 根据权利要求1所述的背光灯板，其中：
    所述拼接齿边缘和与所述拼接齿边缘相邻的所述发光单元之间的距离为第一距离，所述第一距离小于等于所述基板本体上设置于除所述拼接齿外的相邻所述发光单元的中心之间距离的一半。
  3. 根据权利要求1所述的背光灯板，其中：
    相邻所述拼接齿和所述拼接槽沿第一方向的尺寸相等，所述第一方向为在所述基板本体宽度或长度方向上由所述基板本体指向远离所述基板本体的方向；
    相邻所述拼接齿上的所述发光单元沿所述基板本体的长度或宽度方向规则排列。
  4. 根据权利要求3所述的背光灯板，其中：
    相邻所述拼接齿和所述拼接槽沿第二方向的尺寸相等或不相等，所述第二方向为垂直所述第一方向的方向；
    所述拼接齿内的发光单元的数量以及排列方式与配合于所述拼接齿的其他基板本体上拼接槽处发光单元的数量以及排列方式相同。
  5. 根据权利要求1所述的背光灯板，其中：
    所述基板本体上相对的两边缘均具有所述拼接齿和所述拼接槽，且两边缘上的所述拼接齿交错排列，两边缘上的所述拼接槽交错排列；或者
    所述基板本体上周向边缘均具有所述拼接齿和所述拼接槽，且相对的边缘上的拼接齿交错排列，相对的边缘上的拼接槽接错排列。
  6. 根据权利要求1所述的背光灯板，其中：
    所述基板本体分为至少一个子区域，每个所述子区域内包括至少一个所述发光单元，每个所述子区域的亮度能够独立调节；
    其中，至少一个所述子区域包括至少一个所述拼接齿上的所述发光单元。
  7. 根据权利要求6所述的背光灯板，其中：
    至少一个所述子区域包括设置在一个所述拼接齿上的发光单元且不包括设置在除该所述拼接齿外的发光单元。
  8. 根据权利要求7所述的背光灯板，其中：
    每个所述拼接齿内具有4个所述发光单元。
  9. 根据权利要求7所述的背光灯板，其中：
    每个所述拼接齿内的所述发光单元接收第一驱动电流，所述第一驱动电流大于所述基板本体上设置于除所述拼接齿外的发光单元的驱动电流。
  10. 根据权利要求1所述的背光灯板，其中：
    所述发光单元为亚毫米发光二极管。
  11. 根据权利要求1所述的背光灯板，其中：
    所述拼接槽的槽底尺寸大于其槽口尺寸；
    所述拼接齿连接于所述基板本体一端的尺寸大于其远离所述基板本体一端的尺寸，以使所述拼接齿与所述拼接槽相适配的咬合拼接。
  12. 一种背光模组，包括：
    至少两个如权利要求1至11中任一所述的背光灯板；
    至少两个所述背光灯板通过拼接齿和拼接槽相互咬合拼接。
  13. 一种液晶显示器，包括：
    如权利要求12所述的背光模组。
PCT/CN2021/089403 2020-05-28 2021-04-23 背光灯板、背光模组及液晶显示器 WO2021238533A1 (zh)

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