WO2022116320A1 - 背光模组及液晶显示面板 - Google Patents

背光模组及液晶显示面板 Download PDF

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Publication number
WO2022116320A1
WO2022116320A1 PCT/CN2020/139449 CN2020139449W WO2022116320A1 WO 2022116320 A1 WO2022116320 A1 WO 2022116320A1 CN 2020139449 W CN2020139449 W CN 2020139449W WO 2022116320 A1 WO2022116320 A1 WO 2022116320A1
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Prior art keywords
light
emitting
light source
emitting unit
module
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Application number
PCT/CN2020/139449
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English (en)
French (fr)
Inventor
刘华龙
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Tcl华星光电技术有限公司
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Publication of WO2022116320A1 publication Critical patent/WO2022116320A1/zh

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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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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

Definitions

  • the present application relates to the field of display technology, and in particular, to a backlight module and a liquid crystal display panel.
  • Display technologies used in existing large-size display panels are generally divided into two categories: LCD and OLED.
  • the OLED panel has the advantage of self-illumination, which makes the contrast ratio of the display screen much higher than that of the traditional LCD panel.
  • the expensive OLED material due to the expensive OLED material, the overall cost of the OLED panel is relatively high.
  • Mini LED display technology has emerged in the industry.
  • the cost of Mini LED panels is much lower than that of OLED panels, but the brightness and picture quality of Mini LED panels are close to OLED panels.
  • Mini LED display technology is based on the traditional LCD display technology, using multiple small-sized Mini The LED light is used as the backlight source of the LCD panel to improve the contrast of the display screen.
  • Mini LED lights will be laid on the whole surface to drive the Mini LED.
  • the drive current of the LED lamp is input from the end of the liquid crystal panel, and the drive current is input to each Mini LED lamp from the end of the liquid crystal panel.
  • the line resistance gradually increases, and the farther the distance from the input terminal of the drive current is, the more severely affected by the IR Drop (resistance voltage drop), resulting in the farther from the input terminal of the drive current.
  • the Mini LED whose distance from the input end of the driving current is farther away. The smaller the driving current received by the LED lamp, the problem of uneven brightness on the display screen.
  • the present application provides a backlight module, the backlight module comprising:
  • the backlight panel includes a light-emitting area
  • a drive module for driving the light-emitting module includes a first drive unit, the first drive unit is connected with the first light source; the first drive unit is located along the first light source along the first The side part of the direction is connected with the first light source, and the second direction is perpendicular to the first direction;
  • each of the first light-emitting unit groups includes two adjacent light-emitting units arranged along the first direction; in each of the first light-emitting unit groups, two of the light-emitting units have For the first spacing in the first direction, the greater the distance between the first light-emitting unit group and the first driving unit, the smaller the first spacing.
  • the light emitting module further includes a second light source, the second light source is located at the side of the first light source; the second light source includes a plurality of second light emitting unit groups, a plurality of the first light source The two light-emitting unit groups are arranged in a first direction and a second direction, and each of the second light-emitting unit groups includes two adjacent light-emitting units arranged along the first direction;
  • the driving module further includes a second driving unit disposed opposite to the first driving unit, the second driving unit is connected to the second light source, and in each of the second light-emitting unit groups, two of the The light-emitting units have a second pitch along the first direction, and the greater the distance between the second light-emitting unit group and the second driving unit, the smaller the second pitch.
  • the second light source is located between the first light source and the second driving unit.
  • both the first light source and the second light source include a plurality of third light-emitting unit groups, and the plurality of the third light-emitting unit groups are arranged in a first direction and a second direction;
  • the third light-emitting unit group includes two adjacent light-emitting units arranged along the second direction, and in each of the third light-emitting unit groups, the two light-emitting units have a third spacing along the second direction .
  • all of the third pitches L are equal.
  • the light-emitting region includes a central region and an edge region surrounding the central region, and the density of light-emitting cells in the central region is greater than the density of light-emitting cells in the edge region.
  • the third pitch of the third light emitting unit group located at the central region is smaller than the third pitch of the third light emitting cell group located at the edge region.
  • the first light source and the second light source are symmetrical with respect to a first centerline of the light-emitting region, and the first centerline is parallel to the second direction.
  • the present application further provides a liquid crystal display panel, the liquid crystal display panel includes a display screen body and a backlight module, the backlight module is disposed on the back side of the display screen body, and the backlight module includes :
  • the backlight panel includes a light-emitting area
  • a drive module for driving the light-emitting module includes a first drive unit, the first drive unit is connected with the first light source; the first drive unit is located along the first light source along the first The side part of the direction is connected with the first light source, and the second direction is perpendicular to the first direction;
  • each of the first light-emitting unit groups includes two adjacent light-emitting units arranged along the first direction; in each of the first light-emitting unit groups, two of the light-emitting units have For the first spacing in the first direction, the greater the distance between the first light-emitting unit group and the first driving unit, the smaller the first spacing.
  • the light emitting module further includes a second light source, the second light source is located at the side of the first light source; the second light source includes a plurality of second light emitting unit groups, a plurality of the first light source The two light-emitting unit groups are arranged in a first direction and a second direction, and each of the second light-emitting unit groups includes two adjacent light-emitting units arranged along the first direction;
  • the driving module further includes a second driving unit disposed opposite to the first driving unit, the second driving unit is connected to the second light source, and in each of the second light-emitting unit groups, two of the The light-emitting units have a second pitch along the first direction, and the greater the distance between the second light-emitting unit group and the second driving unit, the smaller the second pitch.
  • the second light source is located between the first light source and the second driving unit.
  • both the first light source and the second light source include a plurality of third light-emitting unit groups, and the plurality of the third light-emitting unit groups are arranged in a first direction and a second direction;
  • the third light-emitting unit group includes two adjacent light-emitting units arranged along the second direction, and in each of the third light-emitting unit groups, the two light-emitting units have a third spacing along the second direction .
  • all of the third pitches L are equal.
  • the light-emitting region includes a central region and an edge region surrounding the central region, and the density of light-emitting cells in the central region is greater than the density of light-emitting cells in the edge region.
  • the third pitch of the third light emitting unit group located at the central region is smaller than the third pitch of the third light emitting cell group located at the edge region.
  • the first light source and the second light source are symmetrical with respect to a first centerline of the light-emitting region, and the first centerline is parallel to the second direction.
  • the distance between two adjacent light-emitting units in the area far from the driving unit is smaller, and the area far from the driving unit can be improved without changing the overall number of light-emitting units.
  • the density of light-emitting units is increased, that is, there are more light-emitting units in the area far from the driving unit, and the light-emitting units are arranged in a progressive manner, so that the density of light-emitting units in areas with different distances from the driving unit is different, thereby reducing the It even eliminates the adverse effects caused by the resistance voltage drop, so that the overall brightness of the display screen is uniform, and the picture quality is improved.
  • FIG. 1 is a first structural schematic diagram of a backlight module in the application
  • FIG. 2 is a second structural schematic diagram of the backlight module in the application.
  • FIG. 3 is a third structural schematic diagram of the backlight module in the application.
  • FIG. 4 is a fourth structural schematic diagram of the backlight module in the application.
  • FIG. 5 is a schematic diagram of a fifth structure of the backlight module in the application.
  • the present invention is aimed at the existing liquid crystal display panels adopting the Mini LED display technology, the Mini LED display panel with the farther the distance from the input end of the driving current is. The smaller the driving current received by the LED lamp, the problem of uneven brightness on the display screen.
  • a backlight module as shown in FIG. 1 , includes a backlight panel 10 , a light-emitting module and a driving module 30 .
  • the backlight panel 10 includes a light-emitting area, and the light-emitting module is disposed on the backlight panel 10 and located in the light-emitting area; the light-emitting module includes a first light source 21 , and the first light source 21 includes a plurality of The first light-emitting unit group 213, a plurality of the first light-emitting unit groups 213 are arranged in a first direction and a second direction.
  • the driving module 30 is electrically connected to the light-emitting module, and the driving module 30 provides a driving current for the light-emitting module to drive the light-emitting module;
  • the driving module 30 includes a first driving unit 31 , the first driving unit 31 is connected to the first light source 21 ; the first driving unit 31 is located at the side of the first light source 21 along the first direction and is connected to the first light source 21 , and the second direction is connected to the first light source 21 .
  • the first direction is vertical.
  • the first direction is the longitudinal direction
  • the second direction is the transverse direction
  • each of the first light-emitting unit groups 213 includes two adjacent light-emitting units 24 arranged along the first direction; in each of the first light-emitting unit groups 213, two of the light-emitting units 24 has a first distance D1 along the first direction, and the light-emitting unit 24 may be a miniature LED lamp.
  • first light-emitting unit groups 213 arranged along the first direction share one light-emitting unit 24, and the two light-emitting units 24 in each of the first light-emitting unit groups 213 are arranged at intervals;
  • the first light source 21 includes a plurality of light-emitting units 24, and the plurality of the light-emitting units 24 may be distributed in an array or scattered.
  • the driving current received by the light-emitting unit 24 that is farther away from the driving unit is smaller, that is, the brightness of the light-emitting unit 24 is smaller, and by setting the distribution of the light-emitting unit 24 , the distance between two adjacent light-emitting units 24 in the area far from the driving module 30 is smaller, and on the premise of not changing the overall number of light-emitting units 24, the distance between the light-emitting units 24 in the area far away from the driving module 30 is increased.
  • Density that is, a greater number of light emitting units 24 are located in the area away from the driving module 30, and the light emitting units 24 are arranged in a progressive manner, so that the density of the light emitting units 24 in areas with different distances from the first driving unit 31 is different , so as to reduce or even eliminate the adverse effects caused by the resistance voltage drop, make the overall brightness of the display screen uniform, and improve the picture quality.
  • two adjacent second light-emitting unit groups 221 arranged along the first direction share one light-emitting unit 24, and the two light-emitting units 24 in each of the second light-emitting unit groups 221 are arranged at intervals;
  • the second light source 22 includes a plurality of light-emitting units 24, and the plurality of the light-emitting units 24 may be distributed in an array or scattered.
  • the first driving unit 31 is electrically connected to the light-emitting unit 24 through a plurality of connecting lines 40, and one connecting line 40 corresponds to and is electrically connected to a column of light-emitting units 24 arranged along the first direction.
  • the driving current output by a driving unit 31 is transmitted to each light-emitting unit 24 of the first light source 21 through the connecting wire 40 .
  • only one light source and one driving unit are provided.
  • the first driving unit 31 drives the light-emitting module, that is, the light-emitting module is driven by one side, and the driving current output by the first driving unit 31 is sequentially transmitted from one side of the light-emitting module to all the light-emitting units 24 .
  • the light emitting module further includes a second light source 22 , the second light source 22 is located at the side of the first light source 21 ; the second light source 22 Including a plurality of second light-emitting unit groups 221, the plurality of second light-emitting unit groups 221 are arranged in a first direction and a second direction, each of the second light-emitting unit groups 221 includes two light-emitting unit groups 221 along the first direction Arranged and adjacent light-emitting units 24 .
  • the driving module 30 further includes a second driving unit 32 opposite to the first driving unit 31 , the second driving unit 32 is connected to the second light source 22 , and each of the second light-emitting units In the group 221, the two light-emitting units 24 have a second distance D2 along the first direction. The greater the distance between the second light-emitting unit group 221 and the second driving unit 32, the second distance D2 is smaller.
  • the light-emitting area of the backlight panel 10 is divided into two partitions, and the first light source 21 and the second light source 22 are respectively located in the two partitions.
  • the first driving unit 31 provides the first driving for the first light source 21
  • the second driving unit 32 provides a second driving current for the second light source 22, and the first driving current is transmitted from the side where the first driving unit 31 is located to each light-emitting unit 24 in the first light source 21, and the second driving current is transmitted from the The side where the two driving units 32 are located is transmitted to each light emitting unit 24 in the second light source 22, and the two driving units are used to drive the two light sources respectively, which can better realize time-division and partition control.
  • the second driving unit 32 is electrically connected to the light-emitting unit 24 through a plurality of connecting lines 40, and one connecting line 40 corresponds to and is electrically connected to a column of light-emitting units 24 arranged along the first direction.
  • the driving current output by the two driving units 32 is transmitted to each light-emitting unit 24 of the second light source 22 through the connecting wire 40 .
  • the second light source 22 may be located between the first light source 21 and the second driving unit 32 .
  • first light source 21 and the second light source 22 are arranged along the first direction, and the driving current only needs to be transmitted from the side where the driving unit is located to the middle of the light-emitting area, reducing the length and resistance of each connecting wire 40, Thereby, the resistance voltage drop during the driving current transmission process is reduced.
  • the first light source 21 and the second light source 22 may be symmetrical about the first center line of the light-emitting area, and the first center line is parallel to the second direction, so that the overall brightness of the display screen is more uniform .
  • both the first light source 21 and the second light source 22 include a plurality of third light-emitting unit groups 23, and the plurality of the third light-emitting unit groups 23 are arranged in the first direction and the second direction; each The third light-emitting unit group 23 includes two adjacent light-emitting units 24 arranged along the second direction.
  • third light emitting unit groups 23 along the second direction share one light emitting unit 24 , and the two light emitting units 24 in each third light emitting unit group 23 are arranged at intervals.
  • all the third distances L may be equal, so that the chromaticity and contrast of each area of the display screen are more uniform.
  • all the light emitting units 24 in each column of light emitting units 24 arranged along the first direction may be located on the same straight line, and each row arranged along the second direction may be located on the same line. All the light emitting units 24 in the light emitting units 24 may be located on the same straight line.
  • the light-emitting area includes a central area 11 and an edge area 12 surrounding the central area 11 .
  • the density of the light-emitting units 24 in the central area 11 may be greater than the density of the light-emitting units 24 in the edge area 12 . , that is, when the area of the central region 11 is equal to that of the edge region 12 , the number of light emitting cells 24 in the central region 11 is greater than the number of light emitting cells 24 in the edge region 12 .
  • the distance between the light-emitting units 24 in the central area 11 of the light-emitting area is greatly affected by the resistance voltage drop, and by increasing the voltage drop in the central area 11
  • the number of light-emitting units 24 can make the brightness of the central area 11 close to the brightness of the edge area 12, so that the overall brightness of the display screen can be uniform.
  • the third spacing L of the third light-emitting unit group 23 located in the central area 11 is smaller than the third spacing L of the third light-emitting unit group 23 located in the edge area 12 .
  • the density and number of light-emitting units 24 in the central area 11 can be increased without increasing the overall number of light-emitting units 24 .
  • the arrangement direction of the two outermost rows of light-emitting units 24 of the light-emitting module may be parallel to the corresponding sides of the backlight panel 10 , and the light-emitting modules are located at the outermost two rows of light-emitting units 24 .
  • the setting direction may be parallel to the corresponding side of the backlight panel 10 to ensure the edge brightness and uniformity of the display panel.
  • the second light source 22 may also be located on the side of the first light source 21 along the second direction.
  • the first light source 21 may further include a first part 211 and a second part 212 arranged along the second direction, and the second light source 22 may be located in the first part 211 and the second part between 212.
  • the present application further provides a liquid crystal display panel, the liquid crystal display panel includes a display screen body and the backlight module as described in any of the above embodiments, the backlight module is disposed on the display the back of the screen.
  • the beneficial effects of the present invention are: by setting the distribution of the light-emitting units 24, the distance between two adjacent light-emitting units 24 in the area far from the driving unit is smaller, and the overall number of the light-emitting units 24 can be changed without changing the overall number of the light-emitting units 24.
  • the density of the light-emitting units 24 in the area far from the driving unit is increased, that is, there are more light-emitting units 24 in the area far away from the driving unit, and the light-emitting units 24 are arranged in a progressive manner, so that the distance from the driving unit is
  • the density of the light emitting units 24 in different regions is different, thereby reducing or even eliminating the adverse effects caused by the resistance voltage drop, so that the overall brightness of the display screen is uniform, and the picture quality is improved.

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Abstract

本申请公开了一种背光模组及液晶显示面板，背光模组包括第一光源和位于第一光源沿第一方向的侧部的第一驱动单元，第一光源包括多个按第一方向和第二方向排布的第一发光单元组，第一发光单元组与第一驱动单元的距离越大，第一发光单元组中沿第一方向排布且相邻的两个发光单元沿第一方向的第一间距越小。

Description

背光模组及液晶显示面板 技术领域
本申请涉及显示技术领域，尤其涉及一种背光模组及液晶显示面板。
 背景技术
现有大尺寸显示面板所用到的显示技术一般分为LCD和OLED两大类。OLED面板以自发光优势，使得显示画面的对比度比传统的LCD面板要高很多，但因OLED材料昂贵，使得OLED面板整体造价较高。
因此，行业内出现了Mini LED显示技术，Mini LED面板的成本比OLED面板低很多，但Mini LED面板的亮度和画质都与OLED面板接近。Mini LED显示技术是在传统的LCD显示技术的基础上，利用多颗小体积的Mini LED灯作为LCD面板的背光光源，以提高显示画面的对比度。采用Mini LED显示技术的液晶面板中，Mini LED灯会整面铺设，用于驱动Mini LED灯的驱动电流从液晶面板的端部输入，驱动电流从液晶面板的端部输入到各Mini LED灯。
然而，随着距离的增加，线路电阻逐渐增大，与驱动电流的输入端距离越远的位置处受到IR Drop（电阻压降）的影响越严重，从而导致与驱动电流的输入端距离越远的Mini LED灯接收到的驱动电流越小，从而使得显示画面出现明亮不均的问题。
 技术问题
现有的采用Mini LED显示技术的液晶显示面板中，与驱动电流的输入端距离越远的Mini LED灯接收到的驱动电流越小，从而使得显示画面出现明亮不均的问题。
 技术解决方案
第一方面，本申请提供一种背光模组，所述背光模组包括：
背光板，所述背光板包括发光区；
设置于所述背光板上且位于所述发光区的发光模块，所述发光模块包括第一光源，所述第一光源包括多个第一发光单元组，多个所述第一发光单元组按第一方向和第二方向排布；
用于驱动所述发光模块的驱动模块，所述驱动模块包括第一驱动单元，所述第一驱动单元与所述第一光源连接；所述第一驱动单元位于所述第一光源沿第一方向的侧部且与所述第一光源连接，所述第二方向与所述第一方向垂直；
其中，每一所述第一发光单元组包括两个沿所述第一方向排布且相邻的发光单元；每一所述第一发光单元组中，两个所述发光单元具有沿所述第一方向的第一间距，所述第一发光单元组与所述第一驱动单元的距离越大，所述第一间距越小。
在一些实施例中，所述发光模块还包括第二光源，所述第二光源位于所述第一光源的侧部；所述第二光源包括多个第二发光单元组，多个所述第二发光单元组按第一方向和第二方向排布，每一所述第二发光单元组包括两个沿所述第一方向排布且相邻的发光单元；
所述驱动模块还包括与所述第一驱动单元相对设置的第二驱动单元，所述第二驱动单元与所述第二光源连接，每一所述第二发光单元组中，两个所述发光单元具有沿所述第一方向的第二间距，所述第二发光单元组与所述第二驱动单元的距离越大，所述第二间距越小。
在一些实施例中，所述第二光源位于所述第一光源与所述第二驱动单元之间。
在一些实施例中，所述第一光源和所述第二光源均包括多个第三发光单元组，多个所述第三发光单元组按第一方向和第二方向排布；每一所述第三发光单元组包括两个沿所述第二方向排布且相邻的发光单元，每一所述第三发光单元组中，两个所述发光单元具有沿第二方向的第三间距。
在一些实施例中，所有所述第三间距L均相等。
在一些实施例中，所述发光区包括中心区域和围绕所述中心区域的边缘区域，所述中心区域的发光单元的密度大于所述边缘区域的发光单元的密度。
在一些实施例中，位于所述中心区域处的所述第三发光单元组的第三间距小于位于所述边缘区域的所述第三发光单元组的第三间距。
在一些实施例中，位于所述中心区域处的所述第三发光单元组中，所述第三发光单元组与所述中心区域的中心的距离越小，所述第三间距越小。
在一些实施例中，所述第一光源与所述第二光源关于所述发光区的第一中线对称，所述第一中线与所述第二方向平行。
第二方面，本申请还提供一种液晶显示面板，所述液晶显示面板包括显示屏体以及背光模组，所述背光模组设置于所述显示屏体的背侧，所述背光模组包括：
背光板，所述背光板包括发光区；
设置于所述背光板上且位于所述发光区的发光模块，所述发光模块包括第一光源，所述第一光源包括多个第一发光单元组，多个所述第一发光单元组按第一方向和第二方向排布；
用于驱动所述发光模块的驱动模块，所述驱动模块包括第一驱动单元，所述第一驱动单元与所述第一光源连接；所述第一驱动单元位于所述第一光源沿第一方向的侧部且与所述第一光源连接，所述第二方向与所述第一方向垂直；
其中，每一所述第一发光单元组包括两个沿所述第一方向排布且相邻的发光单元；每一所述第一发光单元组中，两个所述发光单元具有沿所述第一方向的第一间距，所述第一发光单元组与所述第一驱动单元的距离越大，所述第一间距越小。
在一些实施例中，所述发光模块还包括第二光源，所述第二光源位于所述第一光源的侧部；所述第二光源包括多个第二发光单元组，多个所述第二发光单元组按第一方向和第二方向排布，每一所述第二发光单元组包括两个沿所述第一方向排布且相邻的发光单元；
所述驱动模块还包括与所述第一驱动单元相对设置的第二驱动单元，所述第二驱动单元与所述第二光源连接，每一所述第二发光单元组中，两个所述发光单元具有沿所述第一方向的第二间距，所述第二发光单元组与所述第二驱动单元的距离越大，所述第二间距越小。
在一些实施例中，所述第二光源位于所述第一光源与所述第二驱动单元之间。
在一些实施例中，所述第一光源和所述第二光源均包括多个第三发光单元组，多个所述第三发光单元组按第一方向和第二方向排布；每一所述第三发光单元组包括两个沿所述第二方向排布且相邻的发光单元，每一所述第三发光单元组中，两个所述发光单元具有沿第二方向的第三间距。
在一些实施例中，所有所述第三间距L均相等。
在一些实施例中，所述发光区包括中心区域和围绕所述中心区域的边缘区域，所述中心区域的发光单元的密度大于所述边缘区域的发光单元的密度。
在一些实施例中，位于所述中心区域处的所述第三发光单元组的第三间距小于位于所述边缘区域的所述第三发光单元组的第三间距。
在一些实施例中，位于所述中心区域处的所述第三发光单元组中，所述第三发光单元组与所述中心区域的中心的距离越小，所述第三间距越小。
在一些实施例中，所述第一光源与所述第二光源关于所述发光区的第一中线对称，所述第一中线与所述第二方向平行。
 有益效果
通过对发光单元的分布进行设置，使远离驱动单元的区域处的相邻两个发光单元之间的间距较小，可以在不改变发光单元的整体数量的前提下，提升远离驱动单元的区域处的发光单元的密度，即使得远离驱动单元的区域处具有更多数量的发光单元，同时发光单元采用渐进式排布，使得与驱动单元的距离不同的区域处的发光单元的密度不同，从而减轻甚至消除电阻压降带来的不良影响，使显示画面整体亮度均匀，提升画面画质。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本申请中背光模组的第一种结构示意图；
图2为本申请中背光模组的第二种结构示意图；
图3为本申请中背光模组的第三种结构示意图；
图4为本申请中背光模组的第四种结构示意图；
图5为本申请中背光模组的第五种结构示意图。
附图标记：
10、背光板；11、中心区域；12、边缘区域；21、第一光源；211、第一部分；212、第二部分；213、第一发光单元组；22、第二光源；221、第二发光单元组；23、第三发光单元组；24、发光单元；30、驱动模块；31、第一驱动单元；32、第二驱动单元；40、连接线。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有的采用Mini LED显示技术的液晶显示面板中，与驱动电流的输入端距离越远的Mini LED灯接收到的驱动电流越小，从而使得显示画面出现明亮不均的问题。
一种背光模组，如图1所示，所述背光模组包括背光板10、发光模块以及驱动模块30。
具体的，所述背光板10包括发光区，所述发光模块设置于所述背光板10上且位于所述发光区；所述发光模块包括第一光源21，所述第一光源21包括多个第一发光单元组213，多个所述第一发光单元组213按第一方向和第二方向排布。
具体的，所述驱动模块30与所述发光模块电连接，所述驱动模块30为所述发光模块提供驱动电流，以用于驱动所述发光模块；所述驱动模块30包括第一驱动单元31，所述第一驱动单元31与所述第一光源21连接；所述第一驱动单元31位于第一光源21沿第一方向的侧部且与第一光源21连接，所述第二方向与所述第一方向垂直。
需要说明的是，参见图1至图5可知，在图1至图5中，第一方向为纵向，第二方向为横向。
具体的，每一所述第一发光单元组213包括两个沿所述第一方向排布且相邻的发光单元24；每一所述第一发光单元组213中，两个所述发光单元24具有沿所述第一方向的第一间距D1，发光单元24可以为微小型LED灯。
可以理解的是，沿第一方向排布且相邻的两个第一发光单元组213共用一个发光单元24，而每一所述第一发光单元组213中的两个发光单元24间隔设置；所述第一光源21包括多个发光单元24，多个所述发光单元24可以阵列分布或零散分布。
具体的，所述第一发光单元组213与所述第一驱动单元31的距离越大，所述第一间距D1越小。
需要说明的是，由于电阻压降的影响，与驱动单元距离越远的发光单元24所接收的驱动电流越小，即该发光单元24的亮度越小，而通过对发光单元24的分布进行设置，使远离驱动模块30的区域处的相邻两个发光单元24之间的间距较小，在不改变发光单元24的整体数量的前提下，提升远离驱动模块30的区域处的发光单元24的密度，即使得远离驱动模块30的区域处具有更多数量的发光单元24，同时发光单元24采用渐进式排布，使得与第一驱动单元31的距离不同的区域处的发光单元24的密度不同，从而减轻甚至消除电阻压降带来的不良影响，使显示画面整体亮度均匀，提升画面画质。
可以理解的是，沿第一方向排布且相邻的两个第二发光单元组221共用一个发光单元24，而每一所述第二发光单元组221中的两个发光单元24间隔设置；所述第二光源22包括多个发光单元24，多个所述发光单元24可以阵列分布或零散分布。
在一实施方式中，所述第一驱动单元31通过多条连接线40与发光单元24电连接，一条连接线40与沿第一方向排布的一列发光单元24对应并电连接，所述第一驱动单元31输出的驱动电流通过连接线40传输至第一光源21的各发光单元24。
如图1所示，在一实施方式中，所述光源和所述驱动单元均仅设置有一个。
需要说明的是，此时仅有第一驱动单元31对发光模块进行驱动，即发光模块为单侧驱动，第一驱动单元31输出的驱动电流从发光模块的一侧依次输送至所有发光单元24。
如图2至图5所示，在另一实施方式中，所述发光模块还包括第二光源22，所述第二光源22位于所述第一光源21的侧部；所述第二光源22包括多个第二发光单元组221，多个所述第二发光单元组221按第一方向和第二方向排布，每一所述第二发光单元组221包括两个沿所述第一方向排布且相邻的发光单元24。
其中，所述驱动模块30还包括与所述第一驱动单元31相对设置的第二驱动单元32，所述第二驱动单元32与所述第二光源22连接，每一所述第二发光单元组221中，两个所述发光单元24具有沿所述第一方向的第二间距D2，所述第二发光单元组221与所述第二驱动单元32的距离越大，所述第二间距D2越小。
需要说明的是，将背光板10的发光区划分为两个分区，第一光源21和第二光源22分别位于两个分区中，此时第一驱动单元31为第一光源21提供第一驱动电流，第二驱动单元32为第二光源22提供第二驱动电流，并且第一驱动电流从第一驱动单元31所在侧传输至第一光源21中的各发光单元24，第二驱动电流从第二驱动单元32所在侧传输至第二光源22中的各发光单元24，利用两个驱动单元分别驱动两个光源，可以更好的实现分时分区控制。
在一实施方式中，所述第二驱动单元32通过多条连接线40与发光单元24电连接，一条连接线40与沿第一方向排布的一列发光单元24对应并电连接，所述第二驱动单元32输出的驱动电流通过连接线40传输至第二光源22的各发光单元24。
如图2和图3所示，所述第二光源22可以位于所述第一光源21与所述第二驱动单元32之间。
需要说明的是，第一光源21和第二光源22沿第一方向排布，驱动电流仅需要从驱动单元所在侧传输至发光区的中部即可，减少每根连接线40的长度和电阻，从而减小驱动电流传输过程中的电阻压降。
具体的，所述第一光源21与所述第二光源22可以关于所述发光区的第一中线对称，所述第一中线与所述第二方向平行，以使得显示画面的整体亮度更加均匀。
具体的，所述第一光源21和所述第二光源22均包括多个第三发光单元组23，多个所述第三发光单元组23按第一方向和第二方向排布；每一所述第三发光单元组23包括两个沿所述第二方向排布且相邻的发光单元24，每一所述第三发光单元组23中，两个所述发光单元24具有沿第二方向的第三间距L。
需要说明的是，沿第二方向排布且相邻的两个第三发光单元组23共用一个发光单元24，而每一第三发光单元组23中的两个发光单元24间隔设置。
如图2所示，所有所述第三间距L可以均相等，以使得显示画面的各个区域的色度和对比度等更加均匀。
需要说明的是，此时第一光源21和第二光源22中，沿第一方向设置的每一列发光单元24中的所有发光单元24可以均位于同一直线上，沿第二方向设置的每一行发光单元24中的所有发光单元24可以均位于同一直线上。
如图3所示，所述发光区包括中心区域11和围绕所述中心区域11的边缘区域12，所述中心区域11的发光单元24的密度可以大于所述边缘区域12的发光单元24的密度，即中心区域11的面积与边缘区域12的面积相等时，中心区域11处的发光单元24的数量大于边缘区域12的发光单元24的数量。
需要说明的是，第一光源21和第二光源22按第一方向排布时，发光区的中心区域11处的发光单元24离受电阻压降的影响较大，而通过增加中心区域11的发光单元24的数量，可以使中心区域11的亮度接近于边缘区域12的亮度，从而使显示画面整体亮度均匀。
进一步的，位于所述中心区域11处的所述第三发光单元组23的第三间距L小于位于所述边缘区域12的所述第三发光单元组23的第三间距L。
进一步的，位于所述中心区域11处的所述第三发光单元组23中，所述第三发光单元组23与所述中心区域11的中心的距离越小，所述第三间距L越小。
需要说明的是，通过对第三发光单元组23的第三间距L进行调整，从而可以在不增加发光单元24的整体数量的前提下，增加中心区域11中发光单元24的密度和数量。
具体的，参见图3，此时所述发光模块位于最外侧的两列发光单元24的设置方向可以与背光板10的对应边侧平行，所述发光模块位于最外侧的两行发光单元24的设置方向可以与背光板10的对应边侧平行，以保证显示面板的边缘亮度和均匀性。
如图4所示，所述第二光源22也可以位于所述第一光源21沿第二方向的侧部。
如图5所示，所述第一光源21还可以包括沿第二方向排布的第一部分211和第二部分212，所述第二光源22可以位于所述第一部分211和所述第二部分212之间。
基于上述背光模组，本申请还提供一种液晶显示面板，所述液晶显示面板包括显示屏体以及如上述任一实施方式中所述的背光模组，所述背光模组设置于所述显示屏体的背侧。
本发明的有益效果为：通过对发光单元24的分布进行设置，使远离驱动单元的区域处的相邻两个发光单元24之间的间距较小，可以在不改变发光单元24的整体数量的前提下，提升远离驱动单元的区域处的发光单元24的密度，即使得远离驱动单元的区域处具有更多数量的发光单元24，同时发光单元24采用渐进式排布，使得与驱动单元的距离不同的区域处的发光单元24的密度不同，从而减轻甚至消除电阻压降带来的不良影响，使显示画面整体亮度均匀，提升画面画质。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (18)

  1. 一种背光模组，其中，所述背光模组包括：
    背光板，所述背光板包括发光区；
    设置于所述背光板上且位于所述发光区的发光模块，所述发光模块包括第一光源，所述第一光源包括多个第一发光单元组，多个所述第一发光单元组按第一方向和第二方向排布；
    用于驱动所述发光模块的驱动模块，所述驱动模块包括第一驱动单元，所述第一驱动单元与所述第一光源连接；所述第一驱动单元位于所述第一光源沿第一方向的侧部且与所述第一光源连接，所述第二方向与所述第一方向垂直；
    其中，每一所述第一发光单元组包括两个沿所述第一方向排布且相邻的发光单元；每一所述第一发光单元组中，两个所述发光单元具有沿所述第一方向的第一间距，所述第一发光单元组与所述第一驱动单元的距离越大，所述第一间距越小。
  2. 根据权利要求1所述的背光模组，其中，所述发光模块还包括第二光源，所述第二光源位于所述第一光源的侧部；所述第二光源包括多个第二发光单元组，多个所述第二发光单元组按第一方向和第二方向排布，每一所述第二发光单元组包括两个沿所述第一方向排布且相邻的发光单元；
    所述驱动模块还包括与所述第一驱动单元相对设置的第二驱动单元，所述第二驱动单元与所述第二光源连接，每一所述第二发光单元组中，两个所述发光单元具有沿所述第一方向的第二间距，所述第二发光单元组与所述第二驱动单元的距离越大，所述第二间距越小。
  3. 根据权利要求2所述的背光模组，其中，所述第二光源位于所述第一光源与所述第二驱动单元之间。
  4. 根据权利要求3所述的背光模组，其中，所述第一光源和所述第二光源均包括多个第三发光单元组，多个所述第三发光单元组按第一方向和第二方向排布；每一所述第三发光单元组包括两个沿所述第二方向排布且相邻的发光单元，每一所述第三发光单元组中，两个所述发光单元具有沿第二方向的第三间距。
  5. 根据权利要求4所述的背光模组，其中，所有所述第三间距均相等。
  6. 根据权利要求4所述的背光模组，其中，所述发光区包括中心区域和围绕所述中心区域的边缘区域，所述中心区域的发光单元的密度大于所述边缘区域的发光单元的密度。
  7. 根据权利要求6所述的背光模组，其中，位于所述中心区域处的所述第三发光单元组的第三间距小于位于所述边缘区域的所述第三发光单元组的第三间距。
  8. 根据权利要求7所述的背光模组，其中，位于所述中心区域处的所述第三发光单元组中，所述第三发光单元组与所述中心区域的中心的距离越小，所述第三间距越小。
  9. 根据权利要求4所述的背光模组，其中，所述第一光源与所述第二光源关于所述发光区的第一中线对称，所述第一中线与所述第二方向平行。
  10. 一种液晶显示面板，其中，所述液晶显示面板包括显示屏体以及背光模组，所述背光模组设置于所述显示屏体的背侧，所述背光模组包括：
    背光板，所述背光板包括发光区；
    设置于所述背光板上且位于所述发光区的发光模块，所述发光模块包括第一光源，所述第一光源包括多个第一发光单元组，多个所述第一发光单元组按第一方向和第二方向排布；
    用于驱动所述发光模块的驱动模块，所述驱动模块包括第一驱动单元，所述第一驱动单元与所述第一光源连接；所述第一驱动单元位于所述第一光源沿第一方向的侧部且与所述第一光源连接，所述第二方向与所述第一方向垂直；
    其中，每一所述第一发光单元组包括两个沿所述第一方向排布且相邻的发光单元；每一所述第一发光单元组中，两个所述发光单元具有沿所述第一方向的第一间距，所述第一发光单元组与所述第一驱动单元的距离越大，所述第一间距越小。
  11. 根据权利要求10所述的液晶显示面板，其中，所述发光模块还包括第二光源，所述第二光源位于所述第一光源的侧部；所述第二光源包括多个第二发光单元组，多个所述第二发光单元组按第一方向和第二方向排布，每一所述第二发光单元组包括两个沿所述第一方向排布且相邻的发光单元；
    所述驱动模块还包括与所述第一驱动单元相对设置的第二驱动单元，所述第二驱动单元与所述第二光源连接，每一所述第二发光单元组中，两个所述发光单元具有沿所述第一方向的第二间距，所述第二发光单元组与所述第二驱动单元的距离越大，所述第二间距越小。
  12. 根据权利要求11所述的液晶显示面板，其中，所述第二光源位于所述第一光源与所述第二驱动单元之间。
  13. 根据权利要求12所述的液晶显示面板，其中，所述第一光源和所述第二光源均包括多个第三发光单元组，多个所述第三发光单元组按第一方向和第二方向排布；每一所述第三发光单元组包括两个沿所述第二方向排布且相邻的发光单元，每一所述第三发光单元组中，两个所述发光单元具有沿第二方向的第三间距。
  14. 根据权利要求13所述的液晶显示面板，其中，所有所述第三间距均相等。
  15. 根据权利要求13所述的液晶显示面板，其中，所述发光区包括中心区域和围绕所述中心区域的边缘区域，所述中心区域的发光单元的密度大于所述边缘区域的发光单元的密度。
  16. 根据权利要求15所述的液晶显示面板，其中，位于所述中心区域处的所述第三发光单元组的第三间距小于位于所述边缘区域的所述第三发光单元组的第三间距。
  17. 根据权利要求16所述的液晶显示面板，其中，位于所述中心区域处的所述第三发光单元组中，所述第三发光单元组与所述中心区域的中心的距离越小，所述第三间距越小。
  18. 根据权利要求13所述的液晶显示面板，其中，所述第一光源与所述第二光源关于所述发光区的第一中线对称，所述第一中线与所述第二方向平行。
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