CN111562701A - Reflector plate, backlight module and display device - Google Patents
Reflector plate, backlight module and display device Download PDFInfo
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- CN111562701A CN111562701A CN202010463605.XA CN202010463605A CN111562701A CN 111562701 A CN111562701 A CN 111562701A CN 202010463605 A CN202010463605 A CN 202010463605A CN 111562701 A CN111562701 A CN 111562701A
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- 238000009825 accumulation Methods 0.000 abstract description 6
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- 238000009434 installation Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000009916 joint effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000036961 partial effect Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
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- 230000006978 adaptation Effects 0.000 description 1
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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
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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Abstract
The invention discloses a reflector plate, a backlight module and a display device, and relates to the technical field of display devices. The reflector plate comprises at least two reflector segments which are sequentially arranged and connected along a first direction, each reflector segment is connected to form a light mixing cavity in a surrounding mode, a plurality of mounting holes for LED lamps on a light source assembly to extend into the light mixing cavity are formed in each reflector segment, the centers of the mounting holes are correspondingly arranged with the centers of the LED lamps, the size value of each mounting hole is determined by a mounting hole size calculation formula, the mounting hole size calculation formula is set to be related to the center coordinates (x, y) of the mounting holes, and the center coordinates (x, y) of the mounting holes use the center coordinates (0,0) of each reflector segment as a datum point. The reflector plate is divided into at least two reflector segments, so that the phenomenon of expansion or contraction of the reflector plate can be reduced, the size value of the mounting hole is determined by a mounting hole size calculation formula, and the phenomenon of interference with an LED lamp due to displacement accumulation formed by expansion or contraction of the reflector plate is avoided.
Description
Technical Field
The invention relates to the technical field of display, in particular to a reflector plate, a backlight module and a display device.
Background
The backlight module of the display device can be divided into an edge type backlight module and a direct type backlight module according to the position of the light source, and the direct type backlight module does not need to be provided with a light guide plate relative to the edge type backlight module, so that the direct type backlight module is popular with consumers due to the advantages of high quality and low price. The reflective sheet is an important component of the direct-type backlight module, and whether the design of the reflective sheet is reasonably and directly related to the performance of the backlight module is determined.
The common reflector plate is of a basin-shaped structure, the cavity in the basin is a light mixing cavity, and the LED light source can extend into the light mixing cavity through the opening formed in the reflector plate. Because the reflector plate is made of PET material, expansion (when temperature rises) or contraction (when temperature drops) phenomena exist during temperature changes, especially when large-screen display devices are prevalent, the expansion or contraction phenomena are more obvious, so that the reflector plate is easy to displace, and the open hole of the reflector plate interferes with the corresponding LED light source, especially the edge area of the reflector plate, the displacement accumulation is formed, the interference is more serious, the reflectivity of the reflector plate is influenced, and the visual effect of the backlight module is abnormal.
Therefore, it is an urgent problem to be solved by those skilled in the art to improve the existing reflective sheet to overcome the above problems.
Disclosure of Invention
The invention aims to provide a reflector plate, a backlight module and a display device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a reflector plate which comprises at least two reflector segments which are sequentially arranged and connected along a first direction, wherein the reflector segments are connected to enclose a light mixing cavity, a plurality of mounting holes for an LED lamp on a light source assembly to extend into the light mixing cavity are formed in each reflector segment, the center of each mounting hole is arranged corresponding to the center of the LED lamp, the size value of each mounting hole is determined by a mounting hole size calculation formula, the mounting hole size calculation formula is set to be related to the center coordinates (x, y) of the mounting hole, and the center coordinates (x, y) of the mounting hole take the center coordinates (0,0) of each reflector segment as a datum point.
This reflector plate includes two piece at least reflection sections that arrange in proper order and link to each other along the first direction, cut apart the reflector plate into two piece at least reflection sections, the phenomenon of reflector plate inflation or shrink can be reduced, correspond the setting through the size with the mounting hole with the center of LED lamp, the size value of mounting hole is confirmed by mounting hole size computational formula, mounting hole size computational formula is relevant with the central point of mounting hole position coordinate (x, y), and then can calculate the size of mounting hole according to the coordinate position of mounting hole, reduced because the reflector plate is because the displacement accumulation of inflation or shrink formation, avoid appearing the phenomenon of interfering with the LED lamp.
As a preferable mode of the above reflector, the mounting hole has a rectangular cross section, and the length of the mounting hole is set to M and the width thereof is set to N;
the calculation formula of the size of the mounting hole comprises the following steps:
m-first expansion value K1+ first shrinkage value K2+ first direction LED lamp size K3+ first allowance value K4;
n-the second expansion value J1+ the second shrinkage value J2+ the second direction LED light source size J3+ the second tolerance reserve J4;
wherein the first expansion value K1 ═ abs (x) × first directional expansion coefficient ═ temperature expansion change value, the first contraction value K2 ═ abs (x) × first directional contraction coefficient · temperature contraction change value, the second expansion value J1 ═ abs (y) · second directional expansion coefficient · temperature expansion change value, and the second contraction value J2 ═ abs (y) · second directional contraction coefficient · temperature contraction change value.
As a preferable scheme of the reflector plate, the first allowance K4 and the second allowance J4 both have a value range of 0.05mm to 0.2 mm.
As a preferable scheme of the reflector plate, two adjacent reflector segments are clamped through a first clamping structure.
Two adjacent reflection sections are connected in a clamped mode through a first clamping structure, connection between the two adjacent reflection sections can be achieved, and connection is convenient.
As a preferable scheme of the above reflector, the first clamping structure includes a first buckle structure disposed on one of the two adjacent reflector segments, and a first clamping hole structure disposed on the other of the two adjacent reflector segments.
Above-mentioned first joint structure is through first buckle structure and first card pore structure looks joint, simple structure, easy preparation.
As a preferable scheme of the reflector, the reflector at the end of the reflector includes a first bottom plate, two first side plates and a second side plate, the two first side plates are respectively disposed at two sides of the first bottom plate along a second direction, the second side plate is disposed at one side of the first bottom plate along a first direction far from the center of the light mixing cavity, and the first direction is perpendicular to the second direction;
the first side piece comprises a first sub-piece and a second sub-piece which are spliced mutually, the second sub-piece is positioned on one side, close to the second side piece, of the first sub-piece along the first direction, the first sub-piece is connected with the first bottom piece, and the second sub-piece is integrally formed with the second side piece.
The design is adopted to avoid the seam generated at the joint of the first side sheet and the second side sheet, so that the first side sheet is in smooth transition at the joint of the first side sheet and the second side sheet, and the light leakage at the joint of the first side sheet and the second side sheet can be prevented; meanwhile, the joint of the first side piece and the second side piece is arranged on the second side piece, so that the first sub piece and the second sub piece can be positioned on the same plane when the second sub piece is spliced with the first sub piece, and the better joint effect between the first sub piece and the second sub piece can be ensured.
As a preferable scheme of the above reflector plate, a second clamping structure is arranged at the splicing position of the second sub-plate and the first sub-plate, and the second sub-plate is clamped with the first sub-plate through the second clamping structure.
The splicing position of the second sub-piece and the first sub-piece is clamped through a second clamping structure, and the splicing of the second sub-piece and the first sub-piece is realized.
As a preferable scheme of the above reflector, the second clamping structure includes a second fastening structure disposed on one of the first sub-sheet and the second sub-sheet, and a second clamping hole structure formed on the other of the first sub-sheet and the second sub-sheet, and the second fastening structure and the second clamping hole structure are clamped together.
The second clamping structure is simple in structure and easy to prepare.
As a preferable mode of the above reflective sheet, a joint of the second sub-sheet and the second side sheet forms a first folding line, a joint of the first sub-sheet and the first base sheet forms a second folding line, a joint of the second side sheet and the first base sheet forms a third folding line, and the first folding line, the second folding line, and the third folding line intersect at the same position.
Through the arrangement, the light mixing cavity can be formed after the reflector plates are connected, the structure is simple, and the preparation is easy.
As a preferable mode of the above-mentioned reflection sheet, the first sub-sheet is provided with a seam line, and when the first sub-sheet and the second sub-sheet are fastened, an edge of the second sub-sheet on a side not connected to the second side sheet coincides with the seam line.
Through set up the line of riding on first sub-piece, can detect and adjust the precision behind the connection of first sub-piece and second sub-piece.
As a preferable scheme of the above reflective sheet, the reflective section located between two of the reflective sections at the end portions includes a second bottom sheet and third side sheets, the second bottom sheet is connected to the first bottom sheet or the adjacent second bottom sheet of the reflective section, two of the third side sheets are disposed on two sides of the second bottom sheet along the second direction, the third side sheets are connected to the first side sheets or the adjacent third side sheets of the reflective section, a fourth folding line is formed at a joint of the third side sheets and the second bottom sheet, and the fourth folding line and the third folding line are located on the same straight line.
The reflecting section between the two reflecting sections at the end part has simple structure and easy preparation, and the number of the reflecting sheets can be increased by the reflecting section with the structure.
The invention also provides a backlight module which comprises a light source component and the reflector plate, wherein the light source component is arranged on the reflector plate and is positioned in the light mixing cavity of the reflector plate.
The backlight module has high installation precision through the reflector plate.
The invention also provides a display device comprising the backlight module.
The display device is simple to assemble and high in installation precision.
The invention has the beneficial effects that:
the invention provides a reflector plate, which comprises at least two reflector segments which are sequentially arranged and connected along a first direction, the reflector plate is divided into at least two reflector segments, the phenomenon of expansion or contraction of the reflector plate can be reduced, the size of a mounting hole is correspondingly arranged with the center of an LED lamp, the size value of the mounting hole is determined by a mounting hole size calculation formula, the mounting hole size calculation formula is related to the center position coordinates (x, y) of the mounting hole, the size of the mounting hole can be calculated according to the coordinate position of the mounting hole, the displacement accumulation caused by expansion or contraction of the reflector plate is reduced, the phenomenon of interference with the LED lamp is avoided, and the assembly precision of a backlight module and a display device is improved through the reflector plate.
Drawings
Fig. 1 is a first schematic structural diagram of a reflector according to a first embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view at A of FIG. 1;
fig. 3 is a schematic structural diagram of a reflector plate according to a first embodiment of the present invention;
FIG. 4 is an enlarged partial schematic view at B of FIG. 3;
fig. 5 is a schematic structural diagram of a reflective sheet according to a second embodiment of the present invention.
In the figure:
1. a first reflective segment; 2. a second reflective segment; 3. a third reflective segment; 4. a first clamping structure; 51. a second snap structure; 52. a second card hole structure;
10. mounting holes; 11. a first backsheet; 12. a first side panel; 121. a first sub-sheet; 122. a second sub-sheet; 123. a first fold line; 120. cutting lines; 124. a riding thread; 13. a second side panel;
31. a second backsheet; 32. a third side panel.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The first embodiment is as follows:
because the direct type backlight module does not need to be provided with a light guide plate relative to the side type backlight module, the direct type backlight module is very popular with consumers due to the advantages of high quality and low price. The reflective sheet is an important component of the direct-type backlight module, and whether the design of the reflective sheet is reasonably and directly related to the performance of the backlight module is determined. The common reflector plate is of a basin-shaped structure, the cavity in the basin is a light mixing cavity, and the LED light source can extend into the light mixing cavity through the opening formed in the reflector plate. Because the reflector plate is made of PET material, expansion (when temperature rises) or contraction (when temperature drops) phenomena exist during temperature changes, especially when large-screen display devices are prevalent, the expansion or contraction phenomena are more obvious, so that the reflector plate is easy to displace, and the open hole of the reflector plate interferes with the corresponding LED light source, especially the edge area of the reflector plate, the displacement accumulation is formed, the interference is more serious, the reflectivity of the reflector plate is influenced, and the visual effect of the backlight module is abnormal. Therefore, in order to solve the above problems, this embodiment provides a reflective sheet, as shown in fig. 1 to 4, the reflective sheet includes at least two reflective sections sequentially arranged and connected along a first direction, each reflective section is connected to surround a light mixing cavity, each reflective section is provided with a plurality of mounting holes 10 for LED lamps on a light source assembly to extend into the light mixing cavity, and the center of each mounting hole 10 corresponds to the center of the LED lamp. In this embodiment, the reflective sheet includes two reflective segments, namely a first reflective segment 1 and a second reflective segment 2, which are sequentially arranged and connected along a first direction, where the first direction is a direction pointed by an arrow X in fig. 1.
This reflector plate includes and arranges and two piece at least reflection sections that link to each other in proper order along first direction, splits into two piece at least reflection sections with the reflector plate, can reduce the phenomenon of reflector plate inflation or shrink, corresponds the setting through the center with the size of mounting hole 10 and LED lamp.
Because the equipment state of reflector plate directly decides look after the light source subassembly is reflected and imitate taste and reliability, so in traditional manual assembly, the installation station installation time of reflector plate is longer, corner equipment defective rate is high, in order to solve above-mentioned problem, through first joint structure 4 looks joint between first reflection section 1 and the second reflection section 2, can realize the connection between adjacent first reflection section 1 and the second reflection section 2 through first joint structure 4, and convenient for connection has improved the installation effectiveness. After the first reflection section 1 and the second reflection section 2 are clamped through the first clamping structure 4, the first reflection section 1 and the second reflection section 2 still have a relative movement margin therebetween, so that the first reflection section 1 and the second reflection section 2 cannot affect each other when expanding and contracting.
Specifically, first joint structure 4 includes first buckle structure and first card hole structure, and wherein, first buckle structure sets up on first reflection section 1, and first card hole structure sets up in 2 lines in second reflection section, and the first joint structure 4 of this structure is through first buckle structure and first card hole structure looks joint, simple structure, easy preparation. Of course, the first locking structure may be disposed on the second reflection section 2, and the first locking hole structure may be disposed on the first reflection section 1. In this embodiment, first buckle structure is protruding structure, and first card hole structure is through-hole structure, protruding structure and through-hole structure looks adaptation, and when protruding structure stretched into the through-hole structure in, first reflection section 1 and 2 looks joints of second reflection section. The specific first buckle structure and the first buckle hole structure are not limited to the above structures, as long as the clamping connection between the first reflection section 1 and the second reflection section 2 can be realized.
In order to enhance the connection strength between the first reflective segment 1 and the second reflective segment 2, the first reflective segment 1 and the second reflective segment 2 may be connected by bonding on the basis of the connection through the first clamping structure 4, in this embodiment, for example: set up the gum in protruding structure's circumference, when protruding structure stretched into in the through-hole, first reflection section 1 and 2 looks blocks of second reflection section to adhesive connection.
Optionally, the first reflection section 1 and the second reflection section 2 are connected through a plurality of first clamping structures 4 in a clamping manner, and the plurality of first clamping structures 4 are arranged at intervals along the second direction to enhance the connection strength between the first reflection section 1 and the second reflection section 2. The number and the arrangement position of the specific first clamping structures 4 can be set according to requirements.
Optionally, the connection between the first reflection section 1 and the second reflection section 2 is not limited to the above connection manner, and may also be performed by means of plugging, fixing by a fixing member, and the like.
As shown in fig. 1, each of the first reflective section 1 and the second reflective section 2 includes a first bottom plate 11, two first side plates 12 and a second side plate 13, the two first side plates 12 are respectively disposed on two sides of the first bottom plate 11 along the second direction, the second side plate 13 is disposed on one side of the first bottom plate 11 along the first direction far from the center of the light mixing cavity, the first direction is perpendicular to the second direction, and the second direction is a direction pointed by a Y arrow or a reverse direction thereof.
The first side sheet 12 includes a first sub-sheet 121 and a second sub-sheet 122 which are joined together, the second sub-sheet 122 is located on a side of the first sub-sheet 121 close to the second side sheet 13 along the first direction, the first sub-sheet 121 is connected with the first bottom sheet 11, and the second sub-sheet 122 is integrally formed with the second side sheet 13.
The design is adopted to avoid the seam generated at the joint of the first side sheet 12 and the second side sheet 13, so that the first side sheet 12 is smoothly transited at the joint of the first side sheet 12 and the second side sheet 13, and the light leakage at the joint of the first side sheet 12 and the second side sheet 13 can be prevented; meanwhile, as the joint of the first side piece 12 and the second side piece 13 is arranged on the second side piece 13, when the second sub piece 122 is spliced with the first sub piece 121, the first sub piece 121 and the second sub piece 122 can be positioned on the same plane, so that the better joint effect between the first sub piece 121 and the second sub piece 122 can be ensured.
Optionally, as shown in fig. 2 to 4, a second clamping structure is disposed at a splicing position of the second sub-sheet 122 and the first sub-sheet 121, and the second sub-sheet 122 is clamped with the first sub-sheet 121 through the second clamping structure. The splicing position of the second sub-piece 122 and the first sub-piece 121 is clamped through a second clamping structure, so that the splicing of the second sub-piece 122 and the first sub-piece 121 is realized.
Specifically, the second clamping structure includes a second clamping structure 51 and a second clamping hole structure 52, wherein the second clamping structure 51 is disposed on the first sub-piece 121, and the second clamping hole structure 52 is disposed on the second sub-piece 122, in this embodiment, the second clamping structure 51 is an elastic sheet structure connected to the second sub-piece 122, the elastic sheet structure is disposed toward the second clamping hole structure 52, and the elastic sheet structure can be inserted into the second clamping hole structure 52, so that the second sub-piece 122 is connected to the first sub-piece 121. Optionally, the elastic sheet structure and the second sub-sheet 122 are integrally formed, so that the structure is simple and the preparation is easy.
Of course, the second fastening structure 51 may be disposed on the second sub-piece 122, the second fastening hole structure 52 may be disposed on the first sub-piece 121, and the relative positions of the first fastening structure and the second fastening hole structure 52 may be set as required. The second clamping structure is simple in structure and easy to prepare. In this embodiment, the second sub-piece 122 is connected to the first sub-piece 121 through two sets of second clamping structures.
Optionally, in order to enhance the connection strength between the first sub-sheet 121 and the second sub-sheet 122, the first sub-sheet 121 and the second sub-sheet 122 may be connected by bonding on the basis that the second fastening structure 51 is fastened, in this embodiment, an adhesive tape is added to the elastic sheet structure on the first sub-sheet 121, and the adhesive tape is connected to the second sub-sheet 122, so as to better fix the light mixing cavity formed by the reflector sheet.
The joint of the second sub-piece 122 and the second side piece 13 forms a first folding line 123, the joint of the first sub-piece 121 and the first bottom piece 11 forms a second folding line, the joint of the second side piece 13 and the first bottom piece 11 forms a third folding line, and the first folding line 123, the second folding line and the third folding line are intersected at the same position. The light mixing cavity can be formed by folding along the folding line through the arrangement of the folding line, the structure is simple, and the preparation is easy.
Optionally, an avoiding hole is provided at a position where the first fold line 123, the second fold line and the third fold line intersect, so that the second sub-sheet 122 is folded along the first fold line 123, and the first sub-sheet 121 is folded along the second fold line without interference. Optionally, the avoiding hole can also be used as a positioning mounting hole, so that the avoiding hole can be accurately aligned and assembled with other components.
In the cutting process of the reflector plate, cutting lines 120 are arranged at four corners of the reflector plate, and the reflector plate is cut through the cutting lines 120, so that the first side piece 12 and the second side piece 13 are formed on the first reflection section 1 or the second reflection section 2.
Optionally, a seam line 124 is disposed on the first sub-sheet 121, and when the first sub-sheet 121 and the second sub-sheet 122 are clamped together, an edge of the second sub-sheet 122 on a side not connected to the second side sheet 13 coincides with the seam line 124, that is, the cut line 120 of the second sub-sheet 122 coincides with the seam line 124. By providing the first sub-piece 121 with the seam line 124, the accuracy of the first sub-piece 121 and the second sub-piece 122 after connection can be detected and adjusted.
Firstly, connecting a first reflection section 1 and a second reflection section 2 through a first clamping structure 4 to form an assembly part;
then the second buckle structures 51 at the four corners of the assembly part are sleeved in the corresponding second buckle hole structures 52, and fixed through the back glue, and the four corners are fixed in sequence, so far, and the corner assembly is completed.
In order to better protect the cavity of the reflector before online production, the finished reflector is placed in a jig matched with the reflector cavity, and the finished reflectors are sequentially placed for later use;
in the actual production, through intelligent robot manipulator sucking disc, absorb the bottom in the reflector plate cavity to the accurate counterpoint of reflector plate is accomplished according to the location mounting hole on the reflector plate and is placed.
Usually the reflector plate is made by the PET substrate, and there is flexible phenomenon in the reflector plate when the temperature variation, and the bigger is the size of reflector plate, and the flexible change of expansion value is more obvious, and the reflector plate stretches out and draws back and can make the reflector plate take place the displacement in the module, and the size is bigger, and marginal area's accumulated displacement is bigger. Because the straight following formula reflector plate all is equipped with the mounting hole 10 that matches in every LED lamp department, for making mounting hole 10 and LED lamp counterpoint comparatively accurate, the size of mounting hole 10 on the first bottom plate is confirmed according to mounting hole 10 size calculation formula, mounting hole 10 size calculation formula sets up to be relevant with central coordinate (x, y) of mounting hole 10, central coordinate (x, y) of mounting hole 10 use central coordinate (0,0) of each reflection section as the benchmark, and then can calculate the size of mounting hole 10 according to the coordinate position of mounting hole 10, the reflector plate has been reduced because the displacement accumulation of inflation or shrink formation, avoid appearing the phenomenon of interfering with the LED lamp.
Specifically, the mounting hole 10 has a rectangular cross section, the length of the mounting hole 10 is set to M, and the width is set to N;
the calculation formula of the size of the mounting hole 10 comprises:
m-first expansion value K1+ first shrinkage value K2+ first direction LED lamp size K3+ first allowance value K4;
n-the second expansion value J1+ the second shrinkage value J2+ the second direction LED light source size J3+ the second tolerance reserve J4;
the first expansion value K1 ═ abs (x) × first directional expansion coefficient × temperature expansion change value, the first contraction value K2 ═ abs (x) × first directional contraction coefficient × temperature contraction change value, the second expansion value J1 ═ abs (y) × second directional expansion coefficient × temperature expansion change value, and the second contraction value J2 ═ abs (y) × second directional contraction coefficient × temperature contraction change value.
Optionally, the first direction expansion coefficient, the first direction contraction coefficient, the second direction expansion coefficient, and the second direction contraction coefficient are determined according to a material of the reflective sheet.
Optionally, in consideration of the application of the reflective sheet to the room temperature, the room temperature is 25 ℃, the common use temperature does not exceed 50 ℃, the maximum temperature expansion variation value is 25 ℃, the common use temperature is not lower than-30 ℃, the maximum temperature contraction variation value is 55 ℃, in this embodiment, the temperature expansion variation value is 25 ℃ and the temperature contraction variation value is 55 ℃.
Optionally, the first allowance K4 and the second allowance J4 both have a value range of 0.05mm to 0.2 mm. The first and second tolerance reservations K4 and J4 may take on 0.05mm, 0.1mm, 0.15mm, 0.2mm, and the like.
When the reflector plate is manufactured, the coordinates of the mounting holes 10 are determined according to the coordinates of the LED lamp, and the size of each mounting hole 10 is calculated according to a mounting hole size calculation formula.
Alternatively, the mounting hole 10 in each reflector is calculated by the above-mentioned mounting hole size calculation formula, and the center coordinate of each reflector is used as a reference point when the size of the mounting hole 10 is calculated for each reflector.
Example two:
in this embodiment, the structure of the reflective sheet in this embodiment is different from that of the reflective sheet in the first embodiment, the reflective sheet in this embodiment includes a first reflective segment 1 and a second reflective segment 2, and in this embodiment, as shown in fig. 5, the reflective sheet includes a first reflective segment 1 and a second reflective segment 2, and a third reflective segment 3 located therebetween, in this embodiment, a third reflective segment 3 is disposed between the first reflective segment 1 and the second reflective segment 2, the third reflective segment 3 is connected to the first reflective segment 1 and the second reflective segment 2 on both sides, the third reflective segment 3 includes a second bottom sheet 31 and a third bottom sheet 32, the second bottom sheet 31 is connected to the first bottom sheet 11, two third bottom sheets 32 are disposed on both sides of the second bottom sheet 31 in the second direction, the third bottom sheet 32 is connected to the first side sheet 12 adjacent thereto, the third bottom sheet 32 is connected to the second bottom sheet 31 to form a fourth fold line, the fourth folding line and the third folding line are positioned on the same straight line. The third reflection section 3 has a simple structure, is easy to manufacture, and can increase the number of pieces of the reflection sheet through the reflection section with the structure.
Optionally, the third reflective segment 3 is connected to the first reflective segment 1 and the second reflective segment 2 through a first clamping structure 4.
Optionally, two or more third reflection sections 3 may be further provided, and the number of the third reflection sections 3 may be set as required. The third reflection sections 3 positioned at two sides are respectively connected with the first reflection section 1 and the second reflection section 2, and the third reflection sections 3 positioned between the third reflection sections 3 positioned at two sides are connected through a first clamping structure 4.
Optionally, as shown in fig. 5, a plurality of mounting holes 10 are disposed on the second bottom plate 31 of the third reflective segment 3, the size of the mounting hole 10 is calculated according to a mounting hole size calculation formula, coordinates of the mounting hole 10 use the center of the third bottom plate as a reference point, and the specific mounting hole size calculation formula and the size calculation method of the mounting hole 10 are the same as those in the first embodiment, and are not repeated here.
Example three:
the invention further provides a backlight module, which comprises a light source assembly and the reflector plate in the first embodiment or the second embodiment, wherein the light source assembly is arranged on the reflector plate and is positioned in the light mixing cavity of the reflector plate. The backlight module has high installation precision through the reflector plate.
Example four:
the invention also provides a display device comprising the backlight module of the third embodiment. The display device is simple to assemble and high in installation precision.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (13)
1. The reflector plate is characterized by comprising at least two reflector segments which are sequentially arranged and connected along a first direction, wherein the reflector segments are connected to enclose a light mixing cavity, a plurality of mounting holes (10) for LED lamps on a light source assembly to extend into the light mixing cavity are formed in each reflector segment, the center of each mounting hole (10) is arranged corresponding to the center of the LED lamp, the size value of each mounting hole (10) is determined by a mounting hole (10) size calculation formula, the mounting hole (10) size calculation formula is set to be related to the center coordinates (x, y) of the mounting hole (10), and the center coordinates (x, y) of the mounting hole (10) take the center coordinates (0,0) of each reflector segment as a reference point.
2. The reflection sheet according to claim 1, wherein the mounting hole (10) has a rectangular cross section, the mounting hole (10) has a length set to M and a width set to N;
the size calculation formula of the mounting hole (10) comprises the following steps:
m-first expansion value K1+ first shrinkage value K2+ first direction LED lamp size K3+ first allowance value K4;
n-the second expansion value J1+ the second shrinkage value J2+ the second direction LED light source size J3+ the second tolerance reserve J4;
wherein the first expansion value K1 ═ abs (x) × first directional expansion coefficient ═ temperature expansion change value, the first contraction value K2 ═ abs (x) × first directional contraction coefficient · temperature contraction change value, the second expansion value J1 ═ abs (y) · second directional expansion coefficient · temperature expansion change value, and the second contraction value J2 ═ abs (y) · second directional contraction coefficient · temperature contraction change value.
3. The reflector sheet of claim 2, wherein the first and second allowance K4 and J4 each have a value in the range of 0.05mm to 0.2 mm.
4. The reflector plate as claimed in any one of claims 1 to 3, wherein two adjacent reflector segments are clamped by a first clamping structure (4).
5. The reflector plate as claimed in claim 4, wherein the first clamping structure (4) comprises a first clamping structure disposed on one of two adjacent reflector segments and a first clamping hole structure disposed on the other of two adjacent reflector segments.
6. The reflector according to any one of claims 1 to 3, wherein the reflector segments at the ends of the reflector comprise a first bottom plate (11), two first side plates (12) and a second side plate (13), the two first side plates (12) are respectively arranged at two sides of the first bottom plate (11) along the second direction, the second side plate (13) is arranged at one side of the first bottom plate (11) along the first direction far away from the center of the light mixing cavity, and the first direction is perpendicular to the second direction;
the first side piece (12) comprises a first sub-piece (121) and a second sub-piece (122) which are spliced, the second sub-piece (122) is positioned on one side, close to the second side piece (13), of the first sub-piece (121) along the first direction, the first sub-piece (121) is connected with the first bottom piece (11), and the second sub-piece (122) is integrally formed with the second side piece (13).
7. The reflector plate as claimed in claim 6, wherein a joint of the second sub-plate (122) and the first sub-plate (121) is provided with a second clamping structure, and the second sub-plate (122) is clamped with the first sub-plate (121) through the second clamping structure.
8. The reflective sheet according to claim 7, wherein the second engaging structure comprises a second engaging structure (51) disposed on one of the first sub-sheet (121) and the second sub-sheet (122), and a second engaging hole structure (52) formed on the other of the first sub-sheet and the second sub-sheet, and the second engaging structure (51) engages with the second engaging hole structure (52).
9. The sheeting of claim 8, wherein the second sub-sheet (122) is joined to the second side sheet (13) to form a first fold line (123), the first sub-sheet (121) is joined to the first base sheet (11) to form a second fold line, the second side sheet (13) is joined to the first base sheet (11) to form a third fold line, and the first fold line (123), the second fold line, and the third fold line intersect at the same location.
10. Reflective sheet according to claim 9, wherein said first sub-sheet (121) is provided with a seam line (124), and when said first sub-sheet (121) and said second sub-sheet (122) are fastened, the edge of said second sub-sheet (122) on the side not connected to said second side sheet (13) coincides with said seam line (124).
11. The reflection sheet according to claim 9, wherein the reflection section between two of the end reflection sections comprises a second bottom sheet (31) and a third side sheet (32), the second bottom sheet (31) is connected to the first bottom sheet (11) or the second bottom sheet (31) of the adjacent reflection section, two of the third side sheets (32) are disposed on both sides of the second bottom sheet (31) along the second direction, the third side sheet (32) is connected to the first side sheet (12) or the third side sheet (32) of the adjacent reflection section, and a fourth folding line is formed where the third side sheet (32) is connected to the second bottom sheet (31), and the fourth folding line and the third folding line are located on the same straight line.
12. A backlight module, comprising a light source assembly and the reflective sheet of any one of claims 1 to 11, wherein the light source assembly is disposed on the reflective sheet and located in the light mixing cavity of the reflective sheet.
13. A display device comprising the backlight module of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010463605.XA CN111562701A (en) | 2020-05-27 | 2020-05-27 | Reflector plate, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010463605.XA CN111562701A (en) | 2020-05-27 | 2020-05-27 | Reflector plate, backlight module and display device |
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| CN111562701A true CN111562701A (en) | 2020-08-21 |
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| CN202010463605.XA Pending CN111562701A (en) | 2020-05-27 | 2020-05-27 | Reflector plate, backlight module and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970861A (en) * | 2021-10-22 | 2022-01-25 | 高创(苏州)电子有限公司 | Reflector plate, backlight module and display device |
| WO2023216133A1 (en) * | 2022-05-11 | 2023-11-16 | 京东方科技集团股份有限公司 | Light-emitting substrate and preparation method therefor, backlight module, and display device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070103908A1 (en) * | 2004-08-04 | 2007-05-10 | Hafuka Tabito | Backlight device and liquid crystal display apparatus |
| CN201163326Y (en) * | 2008-01-17 | 2008-12-10 | 中华映管股份有限公司 | LCD device and its backlight module |
| US20100067220A1 (en) * | 2008-09-17 | 2010-03-18 | Advanced Optoelectronic Technology Inc. | Light source assembly using light emitting diodes and reflective sheet set |
| JP4621799B1 (en) * | 2009-05-22 | 2011-01-26 | シャープ株式会社 | Light reflecting sheet, light source device and display device |
| CN102436096A (en) * | 2011-10-28 | 2012-05-02 | 友达光电股份有限公司 | Display device and backlight module thereof |
| CN102853342A (en) * | 2012-09-11 | 2013-01-02 | 深圳市华星光电技术有限公司 | Edge-lit LED backlight module, liquid crystal display device and fixation method of reflector plate |
| JP2013243036A (en) * | 2012-05-21 | 2013-12-05 | Sharp Corp | Manufacturing method of lighting device, and lighting device and liquid crystal display having the same |
| US20150029697A1 (en) * | 2013-07-24 | 2015-01-29 | Samsung Display Co., Ltd. | Backlight unit and display apparatus having the same |
| CN207114967U (en) * | 2017-07-06 | 2018-03-16 | 微鲸科技有限公司 | Backlight module and display device |
| CN109581735A (en) * | 2017-09-28 | 2019-04-05 | 夏普株式会社 | Lighting device and the display device for having it |
| CN208780959U (en) * | 2018-10-30 | 2019-04-23 | 京东方科技集团股份有限公司 | A kind of reflector plate, backlight module and display device |
| CN209460537U (en) * | 2019-02-28 | 2019-10-01 | 青岛海信电器股份有限公司 | A kind of lamp bar, backlight module and display equipment |
-
2020
- 2020-05-27 CN CN202010463605.XA patent/CN111562701A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070103908A1 (en) * | 2004-08-04 | 2007-05-10 | Hafuka Tabito | Backlight device and liquid crystal display apparatus |
| CN201163326Y (en) * | 2008-01-17 | 2008-12-10 | 中华映管股份有限公司 | LCD device and its backlight module |
| US20100067220A1 (en) * | 2008-09-17 | 2010-03-18 | Advanced Optoelectronic Technology Inc. | Light source assembly using light emitting diodes and reflective sheet set |
| JP4621799B1 (en) * | 2009-05-22 | 2011-01-26 | シャープ株式会社 | Light reflecting sheet, light source device and display device |
| CN102436096A (en) * | 2011-10-28 | 2012-05-02 | 友达光电股份有限公司 | Display device and backlight module thereof |
| JP2013243036A (en) * | 2012-05-21 | 2013-12-05 | Sharp Corp | Manufacturing method of lighting device, and lighting device and liquid crystal display having the same |
| CN102853342A (en) * | 2012-09-11 | 2013-01-02 | 深圳市华星光电技术有限公司 | Edge-lit LED backlight module, liquid crystal display device and fixation method of reflector plate |
| US20150029697A1 (en) * | 2013-07-24 | 2015-01-29 | Samsung Display Co., Ltd. | Backlight unit and display apparatus having the same |
| CN207114967U (en) * | 2017-07-06 | 2018-03-16 | 微鲸科技有限公司 | Backlight module and display device |
| CN109581735A (en) * | 2017-09-28 | 2019-04-05 | 夏普株式会社 | Lighting device and the display device for having it |
| CN208780959U (en) * | 2018-10-30 | 2019-04-23 | 京东方科技集团股份有限公司 | A kind of reflector plate, backlight module and display device |
| CN209460537U (en) * | 2019-02-28 | 2019-10-01 | 青岛海信电器股份有限公司 | A kind of lamp bar, backlight module and display equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113970861A (en) * | 2021-10-22 | 2022-01-25 | 高创(苏州)电子有限公司 | Reflector plate, backlight module and display device |
| WO2023216133A1 (en) * | 2022-05-11 | 2023-11-16 | 京东方科技集团股份有限公司 | Light-emitting substrate and preparation method therefor, backlight module, and display device |
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Application publication date: 20200821 |