CN113325629A - Backlight module, display module and display device - Google Patents
Backlight module, display module and display device Download PDFInfo
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- CN113325629A CN113325629A CN202110589976.7A CN202110589976A CN113325629A CN 113325629 A CN113325629 A CN 113325629A CN 202110589976 A CN202110589976 A CN 202110589976A CN 113325629 A CN113325629 A CN 113325629A
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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
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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
- G02F1/133613—Direct backlight characterized by the sequence of light sources
Abstract
The embodiment of the invention discloses a backlight module, a display module and a display device. The backlight module comprises an array driving layer and a plurality of light-emitting devices positioned on the array driving layer; the array driving layer comprises a plurality of data signal lines, each data signal line is connected with a plurality of light-emitting devices, and the number density of the light-emitting devices is gradually increased in the transmission direction of data signals of the data signal lines. According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
Description
Technical Field
The invention relates to the field of display, in particular to a backlight module, a display module and a display device.
Background
In recent years, with the development of display technologies, the requirement for the brightness uniformity of the display screen becomes more and more strict, wherein the brightness uniformity of the backlight module is especially important. For the large-sized backlight module, the light emitting device is connected with the integrated drive circuit through the data signal line, and in the transmission direction of the data signal line, along with the increasing distance between the light emitting device and the integrated drive circuit, the resistance of the data signal line is increased, so that the generated voltage drop is increased, and the brightness of the backlight module is uneven.
Therefore, a backlight module, a display module and a display device are needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the invention provides a backlight module, a display module and a display device, and aims to solve the technical problem that the brightness of the backlight module is not uniform.
The embodiment of the invention provides a backlight module, which comprises an array driving layer and a plurality of light-emitting devices positioned on the array driving layer;
the array driving layer comprises a plurality of data signal lines, each data signal line is connected with a plurality of light-emitting devices, and the number density of the light-emitting devices is gradually increased in the transmission direction of data signals of the data signal lines.
In one embodiment, the pitches of the light emitting devices of two adjacent rows are gradually decreased in the transmission direction of the data signal line.
In one embodiment, the backlight module includes a first light emitting region and a second light emitting region, the first light emitting region is provided with a plurality of first data signal lines and a plurality of first light emitting devices connected with the plurality of data signal lines, and the second light emitting region is provided with a plurality of second data signal lines and a plurality of second light emitting devices connected with the plurality of second data signal lines; the backlight module further comprises a first terminal part and a second terminal part which are oppositely arranged, the first terminal part and the second terminal part are positioned at two sides of the backlight module, the plurality of first data signal lines are electrically connected with the first terminal part, and the plurality of second data signal lines are electrically connected with the second terminal part; wherein the number density of the first light emitting devices is gradually increased in a transmission direction of the data signal of the first data signal line; and the number density of the second light emitting devices is gradually increased in a transmission direction of the data signal of the second data signal line.
In one embodiment, the resistance of the data signal line per unit length is gradually decreased in a transmission direction of a data signal of the data signal line.
In one embodiment, a sectional area of the data signal line on a first plane is gradually increased in a transmission direction of a data signal of the data signal line; the first plane is perpendicular to the backlight module and the extending direction of the data signal line.
In one embodiment, the light emitting device has a light emitting efficiency that gradually increases in a transmission direction of a data signal of the data signal line.
In one embodiment, a light emitting area of the light emitting device gradually increases in a transmission direction of the data signal line.
In one embodiment, the light emitting color of each of the light emitting devices is the same.
The embodiment of the invention also provides a display module, which comprises any one of the backlight module and a display panel positioned on the backlight module.
The embodiment of the invention also provides a display device which comprises at least two display modules, wherein the display modules are arranged in an array manner.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic top view illustrating a first structure of a backlight module according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a second structure of a backlight module according to an embodiment of the invention;
FIG. 3 is a schematic top view of a portion of a third structure of a backlight module according to an embodiment of the invention;
FIG. 4 is a schematic top view of a portion of a fourth structure of a backlight module according to an embodiment of the present invention;
FIG. 5 is a schematic top view of a fifth structure of a backlight module according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 7 is a schematic top view of a first structure of a display device according to an embodiment of the invention;
FIG. 8 is a schematic top view illustrating a second structure of a display device according to an embodiment of the invention;
fig. 9 is a schematic top view of a third structure of a display device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Furthermore, it should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, and are not intended to limit the present invention. In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means upper and lower in the actual use or operation of the device, particularly in the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
In recent years, with the development of display technologies, the requirement for the brightness uniformity of the display screen becomes more and more strict, wherein the brightness uniformity of the backlight module is especially important. For the large-sized backlight module, the light emitting device is connected with the integrated drive circuit through the data signal line, and in the transmission direction of the data signal line, along with the increasing distance between the light emitting device and the integrated drive circuit, the resistance of the data signal line is increased, so that the generated voltage drop is increased, and the brightness of the backlight module is uneven.
Referring to fig. 1, an embodiment of the invention provides a backlight module 100, including an array driving layer 300 and a plurality of light emitting devices 400 disposed on the array driving layer 300;
the array driving layer 300 includes a plurality of data signal lines 310, each of the data signal lines 310 is connected to a plurality of light emitting devices 400, and the number density of the light emitting devices 400 is gradually increased in a transmission direction of data signals of the data signal lines 310.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
The technical solution of the present invention will now be described with reference to specific embodiments.
The backlight module 100 includes an array driving layer 300 and a plurality of light emitting devices 400 on the array driving layer 300; the array driving layer 300 includes a plurality of data signal lines 310, each of the data signal lines 310 is connected to a plurality of light emitting devices 400, and the number density of the light emitting devices 400 is gradually increased in the transmission direction of the data signals of the data signal lines 310, as shown in fig. 1 and 2. The backlight module 100 further includes a terminal member 500 disposed at one side of the backlight module 100, each of the data signal lines 310 is electrically connected to the terminal member 500, and as the distance between the light emitting device 400 and the terminal member 500 increases, the line resistance between the light emitting device 400 and the terminal member 500 increases, the luminance of the light emitting device 400 decreases, the number density of the light emitting devices 400 increases, that is, the luminance of the light emitting device in a unit area should be improved, the luminance of the entire backlight module 100 is balanced, and the luminance uniformity of the backlight module 100 is improved.
In this embodiment, in the transmission direction of the data signal line 310, the pitch of the light emitting devices 400 in two adjacent rows is gradually decreased, specifically referring to fig. 1. The rows refer to the X direction, the columns refer to the Y direction, and as the distance between the light emitting devices 400 and the terminal member 500 increases, the distance between two adjacent rows of the light emitting devices 400 gradually decreases in the transmission direction of the data signal line 310, so as to increase the number density of the light emitting devices 400, that is, the light emitting brightness in a unit area should be improved, balance the light emitting brightness of the entire display module 10, and improve the brightness uniformity of the backlight module 100.
In this embodiment, the backlight module 100 further includes a plurality of scanning signal lines 320 disposed perpendicular to the data signal lines 310, the data signal lines 310 are horizontally and vertically staggered with the scanning signal lines 320, and one data signal line 310 and one scanning signal line 320 correspond to one light emitting device 400, as shown in fig. 1. The scan signal line 320 functions as a switch of the light emitting device 400.
In this embodiment, the backlight module 100 includes a first light emitting area 110 and a second light emitting area 120, a plurality of first data signal lines 311 and a plurality of first light emitting devices 400 connected to the plurality of data signal lines 310 are disposed in the first light emitting area 110, and a plurality of second data signal lines 312 and a plurality of second light emitting devices 400 connected to the plurality of second data signal lines 312 are disposed in the second light emitting area 120; the backlight module 100 further includes a first terminal portion 510 and a second terminal portion 520 disposed opposite to each other, the first terminal portion 510 and the second terminal portion 520 are disposed at two sides of the backlight module 100, the plurality of first data signal lines 311 are electrically connected to the first terminal portion 510, and the plurality of second data signal lines 312 are electrically connected to the second terminal portion 520; wherein the number density of the first light emitting devices 400 is gradually increased in the transmission direction of the data signal of the first data signal line 311; and, the number density of the second light emitting devices 400 is gradually increased in the transmission direction of the data signal of the second data signal line 312. For example, the first terminal portion 510 and the second terminal portion 520 are disposed at the upper and lower edges, the light emitting device 400 is electrically connected to the first terminal portion 510 or the second terminal portion 520 in a principle of proximity, so as to reduce the voltage drop, meanwhile, in the direction in which the first terminal unit points to correspond to the light emitting device 400, in the transmission direction of the data signal of the first data signal line 311, the number density of the light emitting devices 400 is gradually increased, in the direction in which the second terminal unit points to correspond to the light emitting device 400, in the transmission direction of the data signal of the second data signal line 312, the number density of the light emitting devices 400 is gradually increased, specifically referring to fig. 3, the number density of the light emitting devices 400 is increased, and the arrangement is performed by dividing two regions into different numbers, on the one hand, for example, two regions bisect the backlight module 100, so as to reduce the voltage drop, the final voltage drop of one region is only half of the whole, on the other hand, the arrangement of increasing the number density is facilitated, more spaces are provided for arrangement, the luminance in a unit region should be improved, the luminance of the whole display module 10 is balanced, and the luminance uniformity of the backlight module 100 is improved.
In this embodiment, the scan signal lines 320 include a plurality of first scan signal lines 321 and a plurality of second scan signal lines 322, the first scan signal lines 321 are located in the first light emitting regions 110, and the second scan signal lines 322 are located in the second light emitting regions 120, as shown in fig. 3.
In this embodiment, the resistance of the data signal line 310 per unit length is gradually decreased in the transmission direction of the data signal line 310. By reducing the increasing rate of the resistor, the decreasing rate of the voltage drop is reduced, the decreasing rate of the luminance of the light emitting device 400 is reduced, the luminance of the whole backlight module 100 is balanced, and the luminance uniformity of the backlight module 100 is improved.
In this embodiment, in the transmission direction of the data signal line 310, the cross-sectional area of the data signal line 310 on the first plane gradually increases; the first plane is perpendicular to the backlight module 100 and perpendicular to the extending direction of the data signal line 310, please refer to fig. 4 specifically. For at least one of the data signal lines 310, the sectional area on the first plane is gradually increased, that is, the longitudinal sectional area of the data signal line 310 is gradually increased, so as to reduce the increasing rate of the resistance, thereby reducing the decreasing rate of the voltage drop, reducing the decreasing rate of the light emitting brightness of the light emitting device 400, balancing the light emitting brightness of the whole backlight module 100, and improving the brightness uniformity of the backlight module 100.
In this embodiment, the material of the data signal line 310 may be a pure metal or an alloy metal, and when the material of the data signal line 310 is an alloy metal, the material at least includes a first metal and a second metal, the conductivity of the first metal is greater than that of the second metal, and the content of the first metal is gradually increased in a direction in which the terminal member 500 points to correspond to the light emitting device 400. The content of the first metal is increased, so that the conductivity of the data signal line 310 on the unit area is increased, that is, the farther the light emitting device 400 is away from the terminal member 500, the greater the conductivity is, the higher the conduction efficiency is, the smaller the resistance is, the resistance of different data signal lines 310 is balanced, the luminance of the whole backlight module 100 is balanced, and the luminance uniformity of the backlight module 100 is improved.
In the present embodiment, the light emitting device 400 has a light emitting efficiency that gradually increases in the transmission direction of the data signal line 310. By arranging the light emitting devices 400 of different materials, the light emitting efficiency of the light emitting devices 400 is gradually increased in the extending direction of the data signal line 310, the luminance of the whole display module 10 is balanced, and the luminance uniformity of the backlight module 100 is improved.
In this embodiment, in the transmission direction of the data signal line 310, the light emitting area of the light emitting device 400 gradually increases, specifically referring to fig. 5. The light emitting devices 400 with different light emitting areas are arranged, so that the light emitting areas of two adjacent rows of light emitting devices 400 are increased along with the extending direction of the data signal line 310, that is, the light emitting brightness in a unit area is improved, the light emitting brightness of the whole backlight module 100 is balanced, and the brightness uniformity of the backlight module 100 is improved.
In this embodiment, the light emitting devices 400 are arranged in an array.
In this embodiment, in the transmission direction of the data signal line 310, the pitches of the light emitting devices 400 in two adjacent rows are equal in the direction in which the terminal member 500 points to the corresponding light emitting device 400. Because the voltage drops of the light emitting devices 400 in the same row are equal, the equal spacing between the light emitting devices 400 in two adjacent rows can ensure that the brightness in the row direction is uniform, balance the brightness of the whole backlight module 100, and improve the brightness uniformity of the backlight module 100.
In this embodiment, the backlight module 100 includes a first substrate 200, a plurality of data signal lines 310 on the first substrate 200, a terminal member 500 (which may include the first terminal portion 510 and the second terminal portion 520, or may include only one terminal portion) electrically connected to the data signal lines 310, and the light emitting devices 400 on the data signal lines 310.
In this embodiment, the light emitting color of each of the light emitting devices 400 is the same. Either white light or blue light may be used.
In this embodiment, the light emitting device 400 may be a Mini-LED and/or a Micro-LED.
In this embodiment, the terminal member 500 may include a driver ic and a flexible circuit board.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
Referring to fig. 6, an embodiment of the invention further provides a display module 10, including any one of the backlight modules 100 described above and a display panel 20 located on the backlight module 100.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
The technical solution of the present invention will now be described with reference to specific embodiments.
The display module 10 includes the backlight module 100 as described above and the display panel 20 located on the backlight module 100.
In this embodiment, please refer to any one of the embodiments of the backlight module 100 and fig. 1 to 5 for the structure of the backlight module 100, which is not described herein again.
In this embodiment, since the color lights emitted from the backlight module 100 are the same, the brightness of the liquid crystal layer 40 and the brightness of the array substrate 30 need to be controlled.
In the present embodiment, the display panel 20 includes an array substrate 30 and a liquid crystal layer 40 disposed on the array substrate 30, specifically refer to fig. 6.
In this embodiment, the display panel 20 further includes a color film layer 60 located on the liquid crystal layer 40, and a first polarizing layer 51 and a second polarizing layer 52 located on two sides of the liquid crystal layer 40, as shown in fig. 6.
In this embodiment, the display module 10 further includes an encapsulation layer located on the color film layer 60.
In this embodiment, the array substrate 30 includes a second substrate, an active layer located on the second substrate, a first insulating layer located on the active layer, a gate layer located on the first insulating layer, a second insulating layer located on the gate layer, and a source drain layer located on the second insulating layer. The source drain layer is electrically connected with the active layer through a via hole.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
Referring to fig. 7, an embodiment of the present invention further provides a display device 1, which includes at least two display modules 10 as described above, where the display modules 10 are arranged in an array.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
The technical solution of the present invention will now be described with reference to specific embodiments.
The display device 1 comprises at least two display modules 10, and the display modules 10 are arranged in an array manner.
In this embodiment, please refer to any of the embodiments of the backlight module 100 and the display module 10 and fig. 1 to 6 for the structure of the backlight module 100 and the structure of the display module 10, which are not described herein again.
In this embodiment, in the large-size display device 1, at least two display modules 10 may be spliced, so as to achieve a seamless and uniform display effect of the large-size display device 1.
In this embodiment, the display device 1 further includes a central processing unit and a plurality of wires, and the wires connect the terminal member 500 of any one of the display modules 10 to the central processing unit, so as to control the display of any one of the display modules 10 in a unified manner.
In this embodiment, the display device 1 may further include a plurality of area processors, the connection line connects the terminal component 500 of any one of the display modules 10 with the corresponding area processor, the connection line further connects the area processor with the central processing unit, the central processing unit may issue a command to the area processor, and the area processor directly controls the display module 10 to perform the partition display, so that the workload of the central processing unit may be reduced, the energy consumption temperature of the central processing unit may be reduced, and the partition planning may be performed to deal with other items to be processed, which is beneficial to improving the computing capability and improving the display effect.
In this embodiment, the display device 1 includes an encapsulation cover plate located on the display module 10, and the encapsulation cover plate may respectively correspond to the display module 10, or encapsulate the entire surface of the display device 1.
In this embodiment, the terminal component 500 is located at a first edge of the display module 10, the display module 10 further includes a second edge opposite to the first edge, and in a first direction, the first edges of two adjacent display modules 10 are oppositely disposed and/or the second edges of two adjacent display modules 10 are oppositely disposed, please refer to fig. 8. Even though the light arrangement in the backlight module 100 is slightly uneven, the arrangement mode can avoid uneven brightness jump, so that the brightness is still continuously arranged, the brightness mutation is avoided, the brightness mutation can obviously arouse the attention of human eyes, and the continuous brightness arrangement can neglect the uneven change in the view of human eyes even if the brightness is slightly uneven, so that the overall visual effect is improved.
In this embodiment, when the terminal member 500 is only located at one side corresponding to the backlight module 100, the display device 1 may adopt a head-to-head splicing manner, and a tail-to-tail splicing manner, so as to further improve the overall visual effect, specifically refer to fig. 8.
In this embodiment, when the terminal component 500 includes the first terminal portion 510 and the second terminal portion 520, and the first terminal portion 510 and the second terminal portion 520 are disposed at two opposite edges of the backlight module 100, when the display device 1 is assembled, one side of one display module 10 having the first terminal portion 510 is assembled with one side of the other display module 10 having the first terminal portion 510, so as to improve the overall visual effect, specifically refer to fig. 9.
According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
The embodiment of the invention discloses a backlight module, a display module and a display device. The backlight module comprises an array driving layer and a plurality of light-emitting devices positioned on the array driving layer; the array driving layer comprises a plurality of data signal lines, each data signal line is connected with a plurality of light-emitting devices, and the number density of the light-emitting devices is gradually increased in the transmission direction of data signals of the data signal lines. According to the embodiment of the invention, the number density of the light-emitting devices is set to be gradually increased in the transmission direction of the data signals of the data signal line, the number of the light-emitting devices in the unit area is increased, and the light-emitting brightness in the unit area is improved, so that the problem of uneven light emission of the backlight module caused by the fact that the brightness of the single light-emitting device is reduced due to voltage drop is solved.
The backlight module, the display module and the display device provided by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A backlight module is characterized by comprising an array driving layer and a plurality of light emitting devices positioned on the array driving layer;
the array driving layer comprises a plurality of data signal lines, each data signal line is connected with a plurality of light-emitting devices, and the number density of the light-emitting devices is gradually increased in the transmission direction of data signals of the data signal lines.
2. The backlight module according to claim 1, wherein the pitch of the light emitting devices in two adjacent rows is gradually decreased in the transmission direction of the data signals of the data signal lines.
3. The backlight module as claimed in claim 1, wherein the backlight module comprises a first light emitting region and a second light emitting region, the first light emitting region has a plurality of first data signal lines and a plurality of first light emitting devices connected to the plurality of data signal lines, and the second light emitting region has a plurality of second data signal lines and a plurality of second light emitting devices connected to the plurality of second data signal lines;
the backlight module further comprises a first terminal part and a second terminal part which are oppositely arranged, the first terminal part and the second terminal part are positioned at two sides of the backlight module, the plurality of first data signal lines are electrically connected with the first terminal part, and the plurality of second data signal lines are electrically connected with the second terminal part;
wherein the number density of the first light emitting devices is gradually increased in a transmission direction of the data signal of the first data signal line; and the number density of the second light emitting devices is gradually increased in a transmission direction of the data signal of the second data signal line.
4. The backlight module according to claim 1, wherein the resistance of the data signal line per unit length is gradually decreased in a transmission direction of the data signal line.
5. The backlight module according to claim 4, wherein the cross-sectional area of the data signal line on the first plane is gradually increased in the transmission direction of the data signal line;
the first plane is perpendicular to the backlight module and the extending direction of the data signal line.
6. The backlight module according to claim 1, wherein the light emitting device has a light emitting efficiency that gradually increases in a transmission direction of the data signal line.
7. The backlight module according to claim 1, wherein the light emitting area of the light emitting device is gradually increased in the transmission direction of the data signal line.
8. The backlight module according to any one of claims 1 to 7, wherein the light emitting color of each of the light emitting devices is the same.
9. A display module comprising the backlight module according to any one of claims 1 to 8 and a display panel disposed on the backlight module.
10. A display device comprising at least two display modules according to claim 9, wherein the display modules are arranged in an array.
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| CN106226967A (en) * | 2016-09-21 | 2016-12-14 | 合肥京东方光电科技有限公司 | A kind of array base palte, display floater and manufacture method |
| CN110033714A (en) * | 2019-04-30 | 2019-07-19 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112505966A (en) * | 2020-12-02 | 2021-03-16 | Tcl华星光电技术有限公司 | Backlight module and liquid crystal display panel |
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2021
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| CN106226967A (en) * | 2016-09-21 | 2016-12-14 | 合肥京东方光电科技有限公司 | A kind of array base palte, display floater and manufacture method |
| CN110033714A (en) * | 2019-04-30 | 2019-07-19 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112505966A (en) * | 2020-12-02 | 2021-03-16 | Tcl华星光电技术有限公司 | Backlight module and liquid crystal display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115547246A (en) * | 2022-11-30 | 2022-12-30 | 惠科股份有限公司 | Backlight module and display device |
| US11929044B1 (en) | 2022-11-30 | 2024-03-12 | HKC Corporation Limited | Backlight module and display apparatus |
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