CN117471766A - Light bar assembly and display device - Google Patents

Light bar assembly and display device Download PDF

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Publication number
CN117471766A
CN117471766A CN202311072276.6A CN202311072276A CN117471766A CN 117471766 A CN117471766 A CN 117471766A CN 202311072276 A CN202311072276 A CN 202311072276A CN 117471766 A CN117471766 A CN 117471766A
Authority
CN
China
Prior art keywords
light emitting
emitting unit
light
circuit board
flexible circuit
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202311072276.6A
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Chinese (zh)
Inventor
易兰林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
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.)
Filing date
Publication date
Application filed by Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to CN202311072276.6A priority Critical patent/CN117471766A/en
Publication of CN117471766A publication Critical patent/CN117471766A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G02F1/133612—Electrical details

Abstract

The application discloses lamp strip subassembly and display device, lamp strip subassembly includes: the lamp strip subassembly, its characterized in that, the lamp strip subassembly includes: the flexible circuit board comprises a first binding area, a second binding area and a folding area positioned between the first binding area and the second binding area, wherein the folding area is provided with a virtual folding line, and the flexible circuit board can be folded along the virtual folding line; the first light-emitting unit group comprises at least two first light-emitting units, and the first light-emitting units are arranged on the first binding area; the second light-emitting unit group comprises at least two second light-emitting units, and the second light-emitting units are arranged on the second binding area; when the flexible circuit board is in a folded state, the second light-emitting units are located between two adjacent first light-emitting units, and the light emitting directions of the first light-emitting units and the second light-emitting units are the same. The method and the device can effectively eliminate the Hotspot phenomenon of the narrow-frame LCD display panel.

Description

Light bar assembly and display device
Technical Field
The application relates to the technical field of display, in particular to a light bar assembly and a display device.
Background
Because the LED light source has the advantages of high brightness, good stability, long service life and the like, the LED lamp is widely applied to LCD backlight as a light source. LEDs as point light sources can be converted into surface light sources by light guide plates, reflective sheets, diffusion sheets and prism sheets in LCD displays with side-entry backlight.
However, in the LCD display, the illumination area of the LED is conical, the conical area is a bright area, the LED lamp spacing area is a dark area, and when light enters the light guide plate, different light sources in the bright area and the dark area cause different brightness of the display screen, so that the Hotspot phenomenon occurs. Along with the development of technology, the requirements of people on the frame of the display are narrower, the effective distance from the light emitting surface of the LED to the display area is required to be continuously reduced by the narrow frame technology, and the area covered by the light area is also reduced, so that the occurrence probability of the Hotspot phenomenon is increased. The spacing distance of the LED lamps of the light bar is limited by the lighting precision, and the spacing distance of the LED lamps cannot be infinitely reduced, so that the Hotspot phenomenon is difficult to solve in the LCD display panel with the narrow frame.
Therefore, a new solution is needed to solve the above-mentioned problems.
Disclosure of Invention
An object of the present application is to provide a light bar assembly to address the Hotspot phenomenon in a narrow bezel LCD display panel.
In order to solve the problems, the technical scheme of the application is as follows:
in a first aspect, the present application provides a light bar assembly comprising:
the flexible circuit board comprises a first binding area, a second binding area and a folding area positioned between the first binding area and the second binding area, wherein the folding area is provided with a virtual folding line, and the flexible circuit board can be folded along the virtual folding line;
the first light-emitting unit group comprises at least two first light-emitting units, and the first light-emitting units are arranged on the first binding area; and
the second light-emitting unit group comprises at least two second light-emitting units, and the second light-emitting units are arranged on the second binding area;
when the flexible circuit board is in a folded state, the second light-emitting units are located between two adjacent first light-emitting units, and the light emitting directions of the first light-emitting units and the second light-emitting units are the same.
Further, the first light emitting unit and the second light emitting unit are located in different rows, and the virtual folding line is parallel to the arrangement direction of the first light emitting unit;
when the flexible circuit board is in an unfolding state, the light emitting direction of the first light emitting unit is opposite to the light emitting direction of the second light emitting unit.
Further, the first light-emitting unit group and the second light-emitting unit group are arranged on the same surface of the flexible circuit board, the light-emitting direction of the first light-emitting unit is parallel to the surface of the flexible circuit board, and the light-emitting direction of the second light-emitting unit is parallel to the surface of the flexible circuit board;
when the flexible circuit board is in a folded state, the light emitting directions of the first light emitting unit and the second light emitting unit deviate from the virtual folding line.
Further, the flexible circuit board is made of transparent materials, the flexible circuit board comprises a first surface and a second surface which are opposite to each other, the first light-emitting unit group is arranged on the first surface, the light-emitting direction of the first light-emitting unit group is perpendicular to the first surface, the second light-emitting unit group is arranged on the second surface, and the light-emitting direction of the second light-emitting unit group is perpendicular to the second surface.
Further, the flexible circuit board comprises a first surface and a second surface which are opposite to each other, the first light-emitting unit group is arranged on the first surface, the light-emitting direction of the first light-emitting unit group is perpendicular to the first surface, the second light-emitting unit group is arranged on the second surface, and the light-emitting direction of the second light-emitting unit group is perpendicular to the second surface;
the flexible circuit board is provided with an avoidance groove in the first binding area, the avoidance groove is positioned between two adjacent first light-emitting units, and the avoidance groove and the second light-emitting units are correspondingly arranged;
when the flexible circuit board is in a folded state, the second light-emitting unit is located in the avoidance groove.
Further, the first light emitting unit group and the second light emitting unit group are located on the same surface, the first light emitting unit and the second light emitting unit are located on the same row, the virtual folding line is perpendicular to the arrangement direction of the first light emitting unit, the light emitting direction of the first light emitting unit and the light emitting direction of the second light emitting unit are parallel to the surface of the flexible circuit board, the light emitting direction of the first light emitting unit is perpendicular to the arrangement direction of the first light emitting unit, and the light emitting direction of the second light emitting unit is perpendicular to the arrangement direction of the second light emitting unit;
in the unfolded state of the flexible circuit board, the light emitting direction of the first light emitting unit is the same as the light emitting direction of the second light emitting unit.
Further, the flexible circuit board is made of transparent materials, the flexible circuit board comprises a first surface and a second surface which are opposite to each other, the first light-emitting unit group is arranged on the first surface, the second light-emitting unit group is arranged on the second surface, the first light-emitting unit and the second light-emitting unit are positioned in the same row, the virtual folding line is perpendicular to the arrangement direction of the first light-emitting unit, and the light-emitting direction of the first light-emitting unit and the light-emitting direction of the second light-emitting unit are perpendicular to the surface of the flexible circuit board;
in the unfolded state of the flexible circuit board, the light emitting direction of the first light emitting unit is opposite to the light emitting direction of the second light emitting unit.
Further, the flexible circuit board comprises a first surface and a second surface which are opposite to each other, the first light-emitting unit group is arranged on the first surface, the second light-emitting unit group is arranged on the second surface, the first light-emitting unit and the second light-emitting unit are positioned in the same row, the virtual folding line is perpendicular to the arrangement direction of the first light-emitting unit, and the light-emitting direction of the first light-emitting unit and the light-emitting direction of the second light-emitting unit are perpendicular to the surface of the flexible circuit board;
the flexible circuit board is provided with an avoidance groove in the first binding area, the avoidance groove is positioned between two adjacent first light-emitting units, and the avoidance groove and the second light-emitting units are correspondingly arranged;
when the flexible circuit board is in a folded state, the second light-emitting unit is located in the avoidance groove.
Further, the interval distance between two adjacent first light-emitting units is larger than or equal to the length of one second light-emitting unit, and when the flexible circuit board is in a folded state, the first light-emitting units and the second light-emitting units are positioned in the same row or different rows;
or, the interval distance between two adjacent first light-emitting units is smaller than the length of one second light-emitting unit, and when the flexible circuit board is in a folded state, the first light-emitting units are positioned in different rows.
In a second aspect, the present application provides a display device, including a display panel and a backlight module, the display panel with the backlight module is connected, the backlight module includes the lamp strip subassembly of any one of the above-mentioned schemes.
In this application, through setting up first light emitting unit group and second light emitting unit group on flexible line way board, make second light emitting unit group when flexible line way board's folded condition, second light emitting unit is located between two adjacent first light emitting units to make interval region between two adjacent first light emitting units change the bright zone of second light emitting unit from the dark zone, improved the arrangement density of light emitting unit, thereby realize not improving the condition of beating a precision, also can reduce the distance between the adjacent light emitting unit, can effectively eliminate narrow frame LCD display panel's Hotspot phenomenon.
Drawings
Fig. 1 is a schematic view of a top view structure of a flexible circuit board in an unfolded state according to a first embodiment of a light bar assembly provided in the present application;
FIG. 2 is a schematic view of the flexible circuit board shown in FIG. 1 in a folded state;
FIG. 3 is a schematic illustration of a side view of the flexible circuit board of FIG. 1 in an unfolded state;
fig. 4 is a schematic diagram of a top view structure of a flexible circuit board in an unfolded state of a light bar assembly according to a fourth embodiment of the present disclosure;
FIG. 5 is a schematic view of the flexible circuit board of FIG. 4 in a folded state;
FIG. 6 is a schematic diagram of a side view of the flexible circuit board of FIG. 4 in an unfolded state;
fig. 7 is a schematic diagram of a top view structure of a flexible circuit board in an unfolded state of a light bar assembly according to a fifth embodiment of the present disclosure;
fig. 8 is a schematic view of the flexible circuit board shown in fig. 7 in a folded state;
fig. 9 is a schematic diagram of a top view structure of a flexible circuit board in an unfolded state of a light bar assembly according to a sixth embodiment of the present disclosure;
fig. 10 is a schematic view of the flexible circuit board shown in fig. 9 in a folded state;
FIG. 11 is a schematic illustration of a top view of a flexible circuit board of a light bar assembly embodiment nine provided herein in an unfolded state;
fig. 12 is a schematic view of the flexible circuit board shown in fig. 11 in a folded state;
fig. 13 is a schematic view of a structure of a display device provided in the present application.
Description of the drawings:
100. a flexible circuit board; 100a, a first binding area; 100b, a second binding area; 101. virtual fold lines;
110. a main body; 120. a conductive connection portion;
200. a first light emitting unit group; 201. a first light emitting unit; 210. a first light-emitting line; 211. a light emitting unit of a first light emitting row; 220. a second light-emitting line; 221. light emitting units of the second light emitting row; 300. a second light emitting unit group; 301. a second light emitting unit; 310. a third light exit line; 311. light emitting units of a third light emitting row;
A. a display panel; B. and a backlight module.
Detailed Description
Terms used in the specification and claims, unless defined otherwise, have meanings that correspond to commonly understood meanings by one of ordinary skill in the art to which the present application pertains. The terms used in the specification and claims are used for descriptive and understanding purposes only and are not intended to limit the application to the narrow interpretation of the specific terms used in the specification and claims.
Referring to fig. 1 to 13, an embodiment of the present application provides a light bar assembly, the light bar assembly includes:
a flexible circuit board 100, comprising a first binding region 100a, a second binding region 100b, and a folding region between the first binding region 100a and the second binding region 100b, wherein the folding region has a virtual folding line 101, and the flexible circuit board 100 can be folded along the virtual folding line 101;
a first light emitting unit group 200 including at least two first light emitting units 201, the first light emitting units 201 being disposed on the first bonding region 100 a;
and a second light emitting unit group 300 including at least two second light emitting units 301, the second light emitting units 301 being disposed on the second bonding region 100 b;
when the flexible circuit board 100 is in the folded state, the second light emitting unit 301 is located between two adjacent first light emitting units 201, and the light emitting directions of the first light emitting units 201 and the second light emitting units 301 are the same.
In this embodiment, by arranging the first light emitting unit group 200 and the second light emitting unit group 300 on the flexible circuit board 100, when the second light emitting unit group 300 is in the folded state of the flexible circuit board 100, the second light emitting unit 301 is located between two adjacent first light emitting units 201, so that the interval area between two adjacent first light emitting units 201 is changed from a dark area to a bright area of the second light emitting unit 301, and the arrangement density of the light emitting units is improved, so that the distance between the adjacent light emitting units can be reduced, the area of the dark area is reduced, and the Hotspot phenomenon of the narrow-frame LCD display panel can be effectively eliminated under the condition that the workpiece precision is not improved.
Specifically, when the flexible circuit board 100 is in the folded state, the first light emitting units 201 and the second light emitting units 301 are located in the same row, or the first light emitting units 201 and the second light emitting units 301 are located in different rows, the second light emitting units 301 correspond to the spacing gaps between two adjacent first light emitting units 201, and the second light emitting units 301 and the first light emitting units 201 are staggered.
The spacing distance between the light emitting units located in the same row cannot be reduced inefficiently due to the limitation of the accuracy of the driving. In the side-in LCD backlight module, the Hotspot phenomenon is closely related to the distance between the light emitting units and the effective distance between the light emitting surface of the light emitting unit and the display area of the display panel: the smaller the interval distance of the light emitting units is, the lower the probability of occurrence of the Hotspot phenomenon is; the larger the effective distance of the light emitting surface of the light emitting unit to the display area of the display panel, the lower the probability of occurrence of the Hotspot phenomenon. Currently, in a side-in LCD backlight module, a light emitting unit is generally required to be disposed in a side frame of a display panel, so that in order to meet a requirement for a narrow frame of the display panel, an effective distance from a light emitting surface of the light emitting unit to a display area of the display panel needs to be further compressed, thereby increasing probability of a Hotspot phenomenon, and in order to avoid occurrence of the Hotspot phenomenon, a higher bright area density needs to be developed. According to the method, the two groups of light-emitting units are respectively the first light-emitting unit group 200 and the second light-emitting unit group 300, the light-emitting directions of the first light-emitting unit group 200 and the second light-emitting unit group 300 are the same in a mode of folding the flexible circuit board 100, and the second light-emitting unit 301 is located between two adjacent first light-emitting units 201, so that dark areas are reduced, the density of bright areas is increased, and the distance between adjacent bright areas is shortened. The first light-emitting unit group 200 and the second light-emitting unit group 300 are prepared under the existing lighting precision, and when the backlight module is installed, the limitation of the lighting precision on the light bar assembly can be overcome only by folding the flexible circuit board, meanwhile, the requirement of brightness uniformity of the LCD display panel with a narrow frame can be met, and the Hotspot phenomenon is effectively solved.
Specifically, the flexible circuit board 100 may be switched from the unfolded state to the folded state, in which the portion of the flexible circuit board 100 where the first light emitting unit is located is folded toward the portion of the flexible circuit board 100 where the second light emitting unit group 300 is located, or in which the portion of the flexible circuit board 100 where the second light emitting unit group 300 is located is folded toward the portion of the flexible circuit board 100 where the first light emitting unit group 200 is located. In the embodiment of the present application, the default flexible circuit board 100 is switched from the unfolded state to the folded state, and the portion of the flexible circuit board 100 where the second light emitting unit group 300 is located is folded toward the portion of the flexible circuit board 100 where the first light emitting unit group 200 is located.
As shown in fig. 1 to 3, in the first embodiment of the light bar assembly provided in the present application, the first light emitting unit 201 and the second light emitting unit 301 are located in different rows, and the virtual folding line 101 is parallel to the arrangement direction of the first light emitting unit 201;
when the flexible wiring board 100 is in the unfolded state, the light emitting direction of the first light emitting unit 201 is opposite to the light emitting direction of the second light emitting unit 301.
As shown in fig. 3, the arrow in the figure shows the light emitting direction of the light emitting unit, and in this embodiment, when the flexible circuit board 100 is in the unfolded state, the light emitting direction of the first light emitting unit 201 and the light emitting direction of the second light emitting unit 301 are opposite to each other. The first light emitting unit 201 emits light in a direction away from the second light emitting unit 301, and the second light emitting unit 301 emits light in a direction away from the first light emitting unit 201.
In the present embodiment, the virtual folding line 101 of the flexible circuit board 100 is located between the first light emitting unit group 200 and the second light emitting unit group 300, and the virtual folding line 101 is parallel to the arrangement direction of the first light emitting units 201.
In this embodiment, the first light emitting unit group 200 and the second light emitting unit group 300 are disposed on the same surface of the flexible circuit board 100, the light emitting direction of the first light emitting unit 201 is parallel to the surface of the flexible circuit board 100, and the light emitting direction of the second light emitting unit 301 is parallel to the surface of the flexible circuit board 100;
specifically, as shown in fig. 2, the broken lines in the drawing are the first light emitting unit 201 and the second light emitting unit 301 that are blocked by the flexible wiring board 100. When the flexible circuit board 100 is in the folded state, the light emitting direction of the first light emitting unit 201 is the same as the light emitting direction of the second light emitting unit 301, and the light emitting direction of the first light emitting unit 201 and the light emitting direction of the second light emitting unit 301 are both far away from the virtual folding line 101.
In this embodiment, the first light emitting unit group 200 and the second light emitting unit group 300 are disposed on the same surface of the flexible circuit board 100, the light emitting surface of the first light emitting unit 201 is perpendicular to the surface of the flexible circuit board 100, and the light emitting surface of the second light emitting unit group 300 is parallel to the surface of the flexible circuit board 100. When the flexible wiring board 100 is in a folded state or an unfolded state, both the first light emitting unit 201 and the second light emitting unit group 300 emit light parallel to the surface of the flexible wiring board 100.
In this embodiment, the interval distance between two adjacent first light emitting units 201 is equal to the length of one second light emitting unit 301;
when the flexible circuit board 100 is in a folded state, the first light emitting unit 201 and the second light emitting unit 301 are located in the same row.
Specifically, in the folded state of the flexible circuit board 100, the first light emitting units 201 and the second light emitting units 301 located between two adjacent first light emitting units 201 are located in the same row, and the second light emitting units 301 may occupy a gap between two adjacent first light emitting units 201, so that the gap between the light emitting units on the folded flexible circuit board 100 is reduced to a minimum. In the unfolded state of the flexible circuit board 100, the first light emitting unit group 200 and the second light emitting unit group 300 positioned in different rows are prepared separately on the flexible circuit board 100, so that the first light emitting unit group 200 and the second light emitting unit group 300 can still have smaller interval distance when the light emitting units are installed on the backlight module on the basis of not reducing the precision of the piece-making equipment.
In this embodiment, the flexible circuit board 100 includes a main body 110 and a conductive connection portion 120, the first light emitting unit group 200 and the second light emitting unit group 300 are disposed on the main body 110, and the conductive connection portion 120 is connected to one side of the main body 110.
Specifically, the conductive connection part 120 may be connected to one side of the portion of the main body 110 where the first light emitting cell group 200 is located, or the conductive connection part 120 may be connected to one side of the portion of the main body 110 where the second light emitting cell group 300 is located.
In the folded state of the flexible circuit board 100, the conductive connection part 120 may be folded along the junction of the main body 110 part and the conductive connection part 120 to change the position of the conductive connection part 120.
In this embodiment, the first light emitting units 201 are disposed at equal intervals, and the second light emitting units 301 are disposed at equal intervals.
In the present embodiment, the interval distance between the first light emitting units 201 is the same as the interval distance between the second light emitting units 301.
In this embodiment, the interval between the first light emitting units 201 is in the range of 6-9mm.
The range of the interval between the first light emitting units 201 may be set to 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8.7mm, 8.8mm, 8.9mm, 9mm.
In this embodiment, the interval between the second light emitting units 301 is in the range of 6-9mm.
The range of the interval between the second light emitting units 301 may be set to 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm, 8.6mm, 8.7mm, 8.8mm, 8.9mm, 9mm.
The second embodiment of the light bar assembly provided in the present application is similar to the first embodiment, and the second embodiment may be combined with the first embodiment.
The first embodiment is different from the first embodiment in that the pitch distance between the first light emitting units 201 is greater than the length of one second light emitting unit group 301.
Specifically, in the folded state of the flexible circuit board 100, the first light emitting units 201 and the second light emitting units 301 are located in the same row or different rows, and the second light emitting units 301 may occupy the gaps between two adjacent first light emitting units 201 of the first light emitting unit group 200, so that the gaps between the light emitting units on the folded flexible circuit board 100 are reduced to the minimum. In the unfolded state of the flexible circuit board 100, the first light emitting unit group 200 and the second light emitting unit group 300 positioned in different rows are prepared separately on the flexible circuit board 100, so that the first light emitting unit group 200 and the second light emitting unit group 300 can still realize smaller interval distance after the light emitting units are mounted on the backlight module on the basis of not reducing the precision of the piece-making equipment.
In this embodiment, the distance between the first light emitting units 201 is longer than the length of one second light emitting unit 301, so that the requirement of the light bar assembly for the lighting precision is lower and the application range is wider.
The third embodiment of the light bar assembly provided by the application is similar to the first embodiment, and the third embodiment can be combined with at least one of the first embodiment and the second embodiment.
The first embodiment is different from the first embodiment in that the pitch distance between two adjacent first light emitting unit groups 201 is smaller than the length of one second light emitting unit 301.
Specifically, in the folded state of the flexible wiring board 100, the first light emitting unit 201 and the second light emitting unit 301 are located in different rows. The second light emitting units 301 are arranged in a delta shape with the first light emitting units 201.
In this embodiment, the first light emitting units 201 and the second light emitting units 301 can be prepared under the current precision of the workpiece, so that the distance between two adjacent first light emitting units 201 of the first light emitting unit group 200 is matched with the current precision of the workpiece, and the distance between two adjacent second light emitting units 301 of the second light emitting unit group 300 is matched with the current precision of the workpiece. After folding, the second light emitting unit group 300 is located in front of the first light emitting unit group 200 or the second light emitting unit group 300 is located behind the first light emitting unit group 200, and lights are emitted through the second light emitting unit 301 to illuminate a triangle dark space formed between two adjacent light emitting units of the first light emitting unit group 200, thereby achieving the effect of avoiding the Hotspot phenomenon.
As shown in fig. 4-6, in order to provide a fourth embodiment of the light bar assembly, the fourth embodiment is similar to the first embodiment, and the fourth embodiment can be combined with at least one of the first embodiment, the second embodiment, and the third embodiment.
In the present embodiment, the first light emitting unit 201 and the second light emitting unit 301 are located in different rows;
when the flexible wiring board 100 is in the unfolded state, the light emitting direction of the first light emitting unit 201 is opposite to the light emitting direction of the second light emitting unit 301. As shown in fig. 6, wherein the arrow in the figure shows the light emitting direction of the light emitting unit.
In this embodiment, as shown in fig. 4, the flexible circuit board 100 is made of a transparent material, the flexible circuit board 100 includes a first surface and a second surface opposite to each other, the first light emitting unit group 200 is disposed on the first surface, the light emitting direction of the first light emitting unit 201 is perpendicular to the first surface, the second light emitting unit group 300 is disposed on the second surface, and the light emitting direction of the second light emitting unit 301 is perpendicular to the second surface.
In the present embodiment, the virtual folding line 101 is located between the first light emitting unit group 200 and the second light emitting unit group 300, and the virtual folding line 101 is parallel to the arrangement direction of the first light emitting units 201.
In this embodiment, as shown in fig. 5, the dashed line in the figure is the first light emitting unit 201 blocked by the flexible circuit board 100, and the first light emitting unit group 200 and the second light emitting unit group 300 are located on different planes when the flexible circuit board 100 is in a folded state, wherein the first light emitting unit group 200 may be located in the light emitting direction of the second light emitting unit group 300, and the light emitted by the second light emitting unit 301 may be transmitted through the flexible circuit board 100 to illuminate a dark area between two adjacent light emitting units of the first light emitting unit group 200, so as to reduce the probability of occurrence of the Hotspot phenomenon. In the folded state of the flexible circuit board 100, the light emitting directions of the first light emitting unit 201 and the second light emitting unit 301 deviate from the virtual folding line 101.
Or, in the folded state of the flexible circuit board 100, the first light emitting unit group 200 and the second light emitting unit group 300 are located on different planes, wherein the second light emitting unit group 300 may be located in the light emitting direction of the first light emitting unit group 200, the light emitted by the first light emitting unit 201 may be irradiated outwards through the flexible circuit board 100, and the second light emitting unit 301 is located between two adjacent light emitting units of the first light emitting unit group 200 to enter a dark area between two adjacent light emitting units of the first light emitting unit group 200, so as to improve the distribution density of the bright area and prevent the Hotspot phenomenon.
In the present embodiment, the interval distance between two adjacent first light emitting units 201 is equal to the length of one light emitting unit of one second light emitting unit group 301.
Alternatively, the pitch distance between two adjacent first light emitting units 201 is greater than the length of one second light emitting unit 301; alternatively, the pitch distance between two adjacent first light emitting units 201 is smaller than the length of one second light emitting unit 301.
As shown in fig. 7 to 8, the fifth embodiment of the light bar assembly provided in the present application is similar to the first embodiment, and the fifth embodiment can be combined with at least one of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment.
In this embodiment, the flexible circuit board 100 includes a first surface and a second surface opposite to each other, the first light emitting unit group is disposed on the first surface, the light emitting direction of the first light emitting unit 201 is perpendicular to the first surface, the second light emitting unit group 300 is disposed on the second surface, and the light emitting direction of the second light emitting unit 301 is perpendicular to the second surface;
as shown in fig. 7, the flexible circuit board 100 is provided with an avoidance groove 102 in the first binding area 100a, the avoidance groove 102 is located between two adjacent first light emitting units 201, and the avoidance groove 102 and the second light emitting unit 301 are correspondingly arranged;
as shown in fig. 8, when the flexible circuit board 100 is in a folded state, the second light emitting unit 301 is located in the avoidance groove 102.
As shown in fig. 9 to 10, a sixth embodiment of the light bar assembly provided in the present application is similar to the first embodiment, and the sixth embodiment can be combined with at least one of the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, and the fifth embodiment.
In this embodiment, the first light emitting unit 201 and the second light emitting unit 301 are located in the same row, the virtual folding line 101 is perpendicular to the arrangement direction of the first light emitting unit 201, the light emitting direction of the first light emitting unit 201 and the light emitting direction of the second light emitting unit 301 are both parallel to the surface of the flexible circuit board 100, the light emitting direction of the first light emitting unit 201 is perpendicular to the arrangement direction of the first light emitting unit 201, and the light emitting direction of the second light emitting unit 301 is perpendicular to the arrangement direction of the second light emitting unit 301;
in the unfolded state of the flexible wiring board 100, the light emitting direction of the first light emitting unit 201 and the light emitting direction of the second light emitting unit 301 are the same.
In the present embodiment, the virtual folding line 101 is located between the first light emitting cell group 200 and the second light emitting cell group 300.
In the present embodiment, the virtual folding line 101 is perpendicular to the length direction of the flexible circuit board 100, and perpendicular to the arrangement direction of the first light emitting units 201 and the arrangement direction of the second light emitting units 301, so that the length of the flexible circuit board 100 in the folded state is shorter than that in the unfolded state.
In the present embodiment, in both the unfolded state and the folded state of the flexible wiring board 100, the light emitting directions of the first light emitting unit 201 and the second light emitting unit 301 are the same.
Specifically, in the unfolded state of the flexible circuit board 100, the light emitting direction of the first light emitting unit 201 is perpendicular to the arrangement direction of the first light emitting unit 201, and the light emitting direction of the second light emitting unit 301 is perpendicular to the arrangement direction of the second light emitting unit.
Since the virtual folding line 101 is perpendicular to the arrangement direction of the first light emitting units 201, after the flexible circuit board 100 is folded along the virtual folding line 101, the first bonding area 100a and the second bonding area 100b overlap, and in the folded state of the flexible circuit board 100, the light emitting direction of the first light emitting unit 201 located in the first bonding area 100a is unchanged, that is, is still parallel to the surface of the flexible circuit board 100, and is perpendicular to the arrangement direction of the first light emitting unit 201, and the light emitting direction of the second light emitting unit 301 located in the second bonding area 100b is also unchanged, that is, is still parallel to the surface of the flexible circuit board 100, and is perpendicular to the arrangement direction of the second light emitting unit 301. The first light emitting unit 201 and the second light emitting unit 301 are located in the same row, so the arrangement direction of the first light emitting unit 201 is parallel to the arrangement direction of the second light emitting unit 301.
In this embodiment, the first light emitting unit group 200 and the second light emitting unit group 300 are disposed on the same surface of the flexible circuit board 100, the light emitting direction of the first light emitting unit 201 is parallel to the surface of the flexible circuit board 100, and the light emitting direction of the second light emitting unit group 300 is parallel to the surface of the flexible circuit board 100.
In this embodiment, the first light emitting unit 201 and the second light emitting unit 301 are disposed on the same plane and on the same row, so that the first light emitting unit group 200 and the second light emitting unit group 300 can be manufactured in the same manufacturing process, and the first light emitting unit group 200 and the second light emitting unit group 300 do not need to be manufactured separately, thereby improving the manufacturing efficiency of the light bar assembly.
In this embodiment, the interval distance between two adjacent first light emitting units 201 is equal to one second light emitting unit 301.
Alternatively, the interval distance between two adjacent first light emitting units 201 is greater than the length of one second light emitting unit 301.
Alternatively, the interval distance between two adjacent first light emitting units 201 is smaller than the length of one second light emitting unit 301.
Embodiment seven of the present application, which is similar to embodiment one, embodiment six may be combined with at least one of embodiment one to embodiment six.
The difference between the present embodiment and the sixth embodiment is that the flexible circuit board 100 is made of a transparent material, the flexible circuit board 100 includes a first surface and a second surface that are opposite to each other, the first light emitting unit group 200 is disposed on the first surface, the second light emitting unit group 300 is disposed on the second surface, the first light emitting unit 201 and the second light emitting unit 301 are located in the same row, the virtual folding line 101 is perpendicular to the arrangement direction of the first light emitting unit 201, and the light emitting direction of the first light emitting unit 201 and the light emitting direction of the second light emitting unit 301 are perpendicular to the surface of the flexible circuit board 100;
in the unfolded state of the flexible circuit board 100, the light emitting direction of the first light emitting unit 201 is opposite to the light emitting direction of the second light emitting unit 301.
Embodiment eight of the present application, which is similar to embodiment one, may be combined with at least one of embodiment one to embodiment seven.
The difference between the present embodiment and the sixth embodiment is that the flexible circuit board 100 includes a first surface and a second surface opposite to each other, the first light emitting unit group 200 is disposed on the first surface, the second light emitting unit group 300 is disposed on the second surface, the first light emitting unit 201 and the second light emitting unit 301 are located in the same row, the virtual folding line 101 is perpendicular to the arrangement direction of the first light emitting unit 201, and the light emitting direction of the first light emitting unit 201 and the light emitting direction of the second light emitting unit 301 are both perpendicular to the surface of the flexible circuit board 100;
the flexible circuit board 100 is provided with an avoidance groove 102 in the first binding region 100a, the avoidance groove 102 is located between two adjacent first light emitting units 201, and the avoidance groove 102 and the second light emitting units 301 are correspondingly arranged;
when the flexible circuit board 100 is in a folded state, the second light emitting unit 301 is located in the avoidance groove 102.
As shown in fig. 11 to 12, in order to provide a light bar assembly according to a ninth embodiment, the ninth embodiment is similar to the first embodiment, and the sixth embodiment may be combined with at least one of the first embodiment to the ninth embodiment.
In this embodiment, the first light emitting unit group 200 includes a first light emitting row 210 and a second light emitting row 220, where the first light emitting row 210 includes at least two first light emitting units 201, and the second light emitting row 220 includes at least two first light emitting units 201;
the second light emitting units comprise a third light emitting row 310, said third light emitting row 310 comprising at least two second light emitting units 301;
in the state that the flexible circuit board 100 is folded in half, the first light emitting units 201 of the first light emitting row 210 are juxtaposed with the second light emitting units 301 of the third light emitting row 310, and the second light emitting units 301 are located between two adjacent first light emitting units 201 of the first light emitting row 210;
the first light emitting units 201 of the second light emitting row 220 are located on the interval of the first light emitting units 201 and the second light emitting units 301 of the first light emitting row 210.
In the present embodiment, the virtual folding line 101 is located between the first light emitting unit group 200 and the second light emitting unit group 300, and the virtual folding line 101 is parallel to the arrangement direction of the light emitting units 211 of the first light emitting row 210.
In this embodiment, the distance between two adjacent first light emitting units 201 in the first light emitting row 210 is greater than the length of one second light emitting unit 301.
In this embodiment, by arranging the first light-emitting line 210 and the second light-emitting line 220 in the first light-emitting unit group 200, each of the first light-emitting line 210, the second light-emitting line 220 and the third light-emitting line 310 can be adapted to lower workpiece-forming precision, and meanwhile, the display effect of the display panel is not affected.
Based on the light bar assembly provided in the above embodiments of the present application, the present application further provides a display device, where the display device includes a display panel a and a backlight module B, the display panel a is connected with the backlight module B, and the backlight module B includes the light bar assembly provided in any one of the embodiments.
The foregoing has described in detail the specific embodiments of the present application. The above-described embodiments of the present disclosure are merely preferred embodiments of the present disclosure, and many variations and modifications may be made by those of ordinary skill in the art without departing from the spirit of the disclosure. Such variations and modifications are intended to fall within the scope of the present application as defined in the claims.

Claims (10)

1. A light bar assembly, the light bar assembly comprising:
the flexible circuit board comprises a first binding area, a second binding area and a folding area positioned between the first binding area and the second binding area, wherein the folding area is provided with a virtual folding line, and the flexible circuit board can be folded along the virtual folding line;
the first light-emitting unit group comprises at least two first light-emitting units, and the first light-emitting units are arranged on the first binding area; and
the second light-emitting unit group comprises at least two second light-emitting units, and the second light-emitting units are arranged on the second binding area;
when the flexible circuit board is in a folded state, the second light-emitting units are located between two adjacent first light-emitting units, and the light emitting directions of the first light-emitting units and the second light-emitting units are the same.
2. The light bar assembly of claim 1 wherein the first light emitting unit and the second light emitting unit are located in different rows, the virtual fold line being parallel to the direction of arrangement of the first light emitting unit;
when the flexible circuit board is in an unfolding state, the light emitting direction of the first light emitting unit is opposite to the light emitting direction of the second light emitting unit.
3. The light bar assembly of claim 2, wherein the first light emitting unit group and the second light emitting unit group are disposed on a same side of the flexible circuit board, wherein a light emitting direction of the first light emitting unit is parallel to a surface of the flexible circuit board, and a light emitting direction of the second light emitting unit is parallel to the surface of the flexible circuit board ；
When the flexible circuit board is in a folded state, the light emitting directions of the first light emitting unit and the second light emitting unit deviate from the virtual folding line.
4. The light bar assembly of claim 2, wherein the flexible circuit board is made of transparent material, the flexible circuit board comprises a first surface and a second surface which are opposite to each other, the first light emitting unit group is arranged on the first surface, the light emitting direction of the first light emitting unit group is perpendicular to the first surface, the second light emitting unit group is arranged on the second surface, and the light emitting direction of the second light emitting unit group is perpendicular to the second surface.
5. The light bar assembly of claim 2 or 4, wherein the flexible circuit board comprises a first surface and a second surface facing away from each other, the first light emitting unit group is arranged on the first surface, the light emitting direction of the first light emitting unit is perpendicular to the first surface, the second light emitting unit group is arranged on the second surface, and the light emitting direction of the second light emitting unit is perpendicular to the second surface;
the flexible circuit board is provided with an avoidance groove in the first binding area, the avoidance groove is positioned between two adjacent first light-emitting units, and the avoidance groove and the second light-emitting units are correspondingly arranged;
when the flexible circuit board is in a folded state, the second light-emitting unit is located in the avoidance groove.
6. The light bar assembly of claim 1, wherein the first light emitting unit group and the second light emitting unit group are positioned on the same surface, and the first light emitting unit and the second light emitting unit are positioned on the same row, the virtual folding line is perpendicular to the arrangement direction of the first light emitting unit, the light emitting direction of the first light emitting unit and the light emitting direction of the second light emitting unit are parallel to the surface of the flexible circuit board, and the light emitting direction of the first light emitting unit is perpendicular to the arrangement direction of the first light emitting unit, and the light emitting direction of the second light emitting unit is perpendicular to the arrangement direction of the second light emitting unit;
in the unfolded state of the flexible circuit board, the light emitting direction of the first light emitting unit is the same as the light emitting direction of the second light emitting unit.
7. The light bar assembly of claim 1, wherein the flexible circuit board is made of transparent material, the flexible circuit board comprises a first surface and a second surface which are opposite to each other, the first light emitting unit group is arranged on the first surface, the second light emitting unit group is arranged on the second surface, the first light emitting unit and the second light emitting unit are positioned in the same row, the virtual folding line is perpendicular to the arrangement direction of the first light emitting unit, and the light emitting direction of the first light emitting unit and the light emitting direction of the second light emitting unit are perpendicular to the surface of the flexible circuit board;
in the unfolded state of the flexible circuit board, the light emitting direction of the first light emitting unit is opposite to the light emitting direction of the second light emitting unit.
8. The light bar assembly of claim 1 or 7, wherein the flexible circuit board comprises a first surface and a second surface facing away from each other, the first light emitting unit group is arranged on the first surface, the second light emitting unit group is arranged on the second surface, the first light emitting unit and the second light emitting unit are positioned in the same row, the virtual folding line is perpendicular to the arrangement direction of the first light emitting unit, and the light emitting direction of the first light emitting unit and the light emitting direction of the second light emitting unit are perpendicular to the surface of the flexible circuit board;
the flexible circuit board is provided with an avoidance groove in the first binding area, the avoidance groove is positioned between two adjacent first light-emitting units, and the avoidance groove and the second light-emitting units are correspondingly arranged;
when the flexible circuit board is in a folded state, the second light-emitting unit is located in the avoidance groove.
9. The light bar assembly of claim 1, wherein a separation distance between two adjacent first light emitting units is greater than or equal to a length of one second light emitting unit, and the first light emitting units and the second light emitting units are located in the same row or different rows when the flexible circuit board is in a folded state;
or, the interval distance between two adjacent first light-emitting units is smaller than the length of one second light-emitting unit, and when the flexible circuit board is in a folded state, the first light-emitting units are positioned in different rows.
10. A display device comprising a display panel and a backlight module, said display panel being connected to said backlight module, said backlight module comprising a light bar assembly according to any one of claims 1-9.
CN202311072276.6A 2023-08-23 2023-08-23 Light bar assembly and display device Pending CN117471766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311072276.6A CN117471766A (en) 2023-08-23 2023-08-23 Light bar assembly and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311072276.6A CN117471766A (en) 2023-08-23 2023-08-23 Light bar assembly and display device

Publications (1)

Publication Number Publication Date
CN117471766A true CN117471766A (en) 2024-01-30

Family

ID=89624549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311072276.6A Pending CN117471766A (en) 2023-08-23 2023-08-23 Light bar assembly and display device

Country Status (1)

Country Link
CN (1) CN117471766A (en)

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