CN112505966B - Backlight module and liquid crystal display panel - Google Patents
Backlight module and liquid crystal display panel Download PDFInfo
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- CN112505966B CN112505966B CN202011404391.5A CN202011404391A CN112505966B CN 112505966 B CN112505966 B CN 112505966B CN 202011404391 A CN202011404391 A CN 202011404391A CN 112505966 B CN112505966 B CN 112505966B
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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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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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
- G02F1/133603—Direct backlight with LEDs
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application discloses a backlight module and a liquid crystal display panel, wherein the backlight module comprises a light-emitting module and a driving module, the light-emitting module comprises a first light source, the first light source comprises a plurality of first light-emitting unit groups which are arranged along a first direction and a second direction, and each first light-emitting unit group comprises two adjacent light-emitting units which are arranged along the first direction; the driving module comprises a first driving unit connected with the first light source, and the first driving unit is positioned on the side part of the first light source along the first direction; the larger the distance between the first light emitting unit group and the first driving unit is, the smaller the first distance between the two light emitting units in the first light emitting unit group along the first direction is. On the premise of not changing the whole number of the light-emitting units, the density of the light-emitting units in the area far away from the driving unit is improved, namely, more light-emitting units are arranged in the area far away from the driving unit, so that adverse effects caused by resistance voltage drop are reduced or even eliminated, the whole brightness of a display picture is uniform, and the picture quality is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight module and a liquid crystal display panel.
Background
Display technologies used in existing large-sized display panels are generally classified into two categories, LCD and OLED. The OLED panel has the advantage of self-luminescence, so that the contrast of a display picture is much higher than that of a traditional LCD panel, but the OLED panel is high in overall manufacturing cost due to the fact that OLED materials are expensive.
Therefore, the Mini LED display technology is developed in the industry, and the Mini LED panel is much lower in cost than the OLED panel, but the brightness and the image quality of the Mini LED panel are close to those of the OLED panel. The Mini LED display technology is based on the traditional LCD display technology, and utilizes a plurality of Mini LED lamps with small volume as backlight light sources of an LCD panel to improve the contrast of a display picture. In a liquid crystal panel using the Mini LED display technology, Mini LED lamps are laid over the entire surface, and a drive current for driving the Mini LED lamps is input from an end portion of the liquid crystal panel, and the drive current is input to each Mini LED lamp from the end portion of the liquid crystal panel.
However, as the distance increases, the line resistance gradually increases, and the IR Drop (resistance Drop) is more seriously affected at a position farther from the input end of the driving current, so that the driving current received by the Mini LED lamp farther from the input end of the driving current is smaller, thereby causing a problem of uneven brightness of the display screen.
Disclosure of Invention
The embodiment of the application provides a backlight module and a liquid crystal display panel, and aims to solve the problem that in the existing liquid crystal display panel adopting a Mini LED display technology, the driving current received by a Mini LED lamp which is far away from the input end of the driving current is smaller, so that the brightness of a display picture is uneven.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
in a first aspect, the present application provides a backlight module, comprising:
a backlight panel comprising a light emitting region;
the light emitting module is arranged on the backlight plate and positioned in the light emitting area, and comprises a first light source, the first light source comprises a plurality of first light emitting unit groups, and the first light emitting unit groups are arranged in a first direction and a second direction;
the driving module is used for driving the light emitting module and comprises a first driving unit, and the first driving unit is connected with the first light source; the first driving unit is positioned at the side part of the first light source along a first direction and is connected with the first light source, and the second direction is vertical to the first direction;
each first light emitting unit group comprises two adjacent light emitting units which are arranged along the first direction; in each of the first light emitting unit groups, two of the light emitting units have a first pitch in the first direction, and the first pitch is smaller as the distance between the first light emitting unit group and the first driving unit is larger.
In some embodiments, the light module further comprises a second light source located to the side of the first light source; the second light source comprises a plurality of second light emitting unit groups, the second light emitting unit groups are arranged in a first direction and a second direction, and each second light emitting unit group comprises two adjacent light emitting units which are arranged in the first direction;
the driving module further comprises a second driving unit arranged opposite to the first driving unit, the second driving unit is connected with the second light source, in each second light emitting unit group, two light emitting units have a second distance along the first direction, and the larger the distance between the second light emitting unit group and the second driving unit is, the smaller the second distance is.
In some embodiments, the second light source is located between the first light source and the second driving unit.
In some embodiments, the first light source and the second light source each include a plurality of third light emitting unit groups arranged in a first direction and a second direction; each of the third light emitting unit groups includes two adjacent light emitting units arranged along the second direction, and in each of the third light emitting unit groups, two of the light emitting units have a third interval along the second direction.
In some embodiments, all of the third spacings L are equal.
In some embodiments, the light emitting region includes a central region and an edge region surrounding the central region, and the density of the light emitting cells of the central region is greater than the density of the light emitting cells of the edge region.
In some embodiments, a third pitch of the third light emitting cell group located at the central region is smaller than a third pitch of the third light emitting cell group located at the edge region.
In some embodiments, the smaller the distance of the third light emitting cell group from the center of the central region, the smaller the third pitch, among the third light emitting cell groups located at the central region.
In some embodiments, the first light source and the second light source are symmetrical about a first midline of the light emitting region, the first midline being parallel to the second direction.
In a second aspect, the present application further provides a liquid crystal display panel, where the liquid crystal display panel includes a display screen body and the backlight module in any of the above embodiments, and the backlight module is disposed on a back side of the display screen body.
The beneficial effects of the invention application are as follows: the distribution of the light-emitting units is set, the distance between two adjacent light-emitting units at the area far away from the driving unit is smaller, the density of the light-emitting units at the area far away from the driving unit can be improved on the premise that the whole number of the light-emitting units is not changed, namely, the light-emitting units with more numbers are arranged at the area far away from the driving unit, the light-emitting units are arranged in a progressive mode, the density of the light-emitting units at the area far away from the driving unit is different, adverse effects caused by resistance voltage drop are reduced or even eliminated, the whole brightness of a display picture is uniform, and the picture quality is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic view of a first structure of a backlight module according to the present application;
FIG. 2 is a schematic view of a second structure of the backlight module of the present application;
FIG. 3 is a schematic view of a third structure of the backlight module of the present application;
FIG. 4 is a schematic diagram of a fourth structure of the backlight module of the present application;
fig. 5 is a schematic view of a fifth structure of the backlight module of the present application.
Reference numerals:
10. a backlight plate; 11. a central region; 12. an edge region; 21. a first light source; 211. a first portion; 212. a second portion; 213. a first light emitting unit group; 22. a second light source; 221. a second light emitting unit group; 23. a third light emitting cell group; 24. a light emitting unit; 30. a drive module; 31. a first drive unit; 32. a second driving unit; 40. and connecting the wires.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The invention aims to solve the problem that in the existing liquid crystal display panel adopting the Mini LED display technology, the driving current received by the Mini LED lamp which is farther away from the input end of the driving current is smaller, so that the brightness of a display picture is uneven.
As shown in fig. 1, the backlight module includes a backlight plate 10, a light emitting module and a driving module 30.
Specifically, the backlight plate 10 includes a light emitting region, and the light emitting module is disposed on the backlight plate 10 and located in the light emitting region; the light emitting module includes a first light source 21, the first light source 21 includes a plurality of first light emitting unit groups 213, and the plurality of first light emitting unit groups 213 are arranged in a first direction and a second direction.
Specifically, 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, and the first driving unit 31 is connected to the first light source 21; the first driving unit 31 is located at a side of the first light source 21 along a first direction and is connected to the first light source 21, and the second direction is perpendicular to the first direction.
As can be seen from fig. 1 to 5, in fig. 1 to 5, the first direction is a longitudinal direction, and the second direction is a transverse direction.
Specifically, 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 have a first distance D1 along the first direction, and the light emitting units 24 may be micro-miniature LED lamps.
It is understood that two adjacent first light emitting unit groups 213 arranged in the first direction share one light emitting unit 24, and two light emitting units 24 in each of the first light emitting unit groups 213 are disposed at intervals; the first light source 21 includes a plurality of light emitting units 24, and the plurality of light emitting units 24 may be distributed in an array or scattered distribution.
Specifically, the larger the distance between the first light emitting cell group 213 and the first driving unit 31 is, the smaller the first distance D1 is.
It should be noted that, due to the effect of the resistance drop, the light emitting unit 24 farther away from the driving unit receives a smaller driving current, i.e., the smaller the brightness of the light emitting unit 24, and by setting the distribution of the light emitting units 24, the spacing between two adjacent light emitting units 24 at the region far from the driving module 30 is made smaller, without changing the overall number of light emitting cells 24, the density of light emitting cells 24 at regions away from the driving module 30 is increased, i.e., so that a greater number of light-emitting units 24 are present at regions remote from the driving module 30, while the light-emitting units 24 adopt a progressive arrangement, so that the density of the light emitting cells 24 at the regions having different distances from the first driving unit 31 is different, therefore, adverse effects caused by resistance voltage drop are reduced or even eliminated, the overall brightness of a display picture is uniform, and the picture quality is improved.
It is understood that two adjacent second light emitting unit groups 221 arranged along the first direction share one light emitting unit 24, and two light emitting units 24 in each of the second light emitting unit groups 221 are disposed at intervals; the second light source 22 includes a plurality of light emitting units 24, and the plurality of light emitting units 24 may be distributed in an array or scattered.
In one embodiment, the first driving unit 31 is electrically connected to the light emitting units 24 through a plurality of connection lines 40, one connection line 40 corresponds to and is electrically connected to a column of the light emitting units 24 arranged along the first direction, and the driving current output by the first driving unit 31 is transmitted to each light emitting unit 24 of the first light source 21 through the connection line 40.
As shown in fig. 1, in an embodiment, only one of the light source and the driving unit is provided.
In this case, only the first driving unit 31 drives the light emitting module, that is, the light emitting module is driven on one side, and the driving current output by the first driving unit 31 is sequentially transmitted to all the light emitting units 24 from one side of the light emitting module.
As shown in fig. 2 to 5, in another embodiment, the light emitting module further includes a second light source 22, and the second light source 22 is located at a side of the first light source 21; the second light source 22 includes 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, and each of the second light emitting unit groups 221 includes two adjacent light emitting units 24 arranged in the first direction.
The driving module 30 further includes a second driving unit 32 disposed opposite to the first driving unit 31, the second driving unit 32 is connected to the second light source 22, two light emitting units 24 in each of the second light emitting unit groups 221 have a second distance D2 along the first direction, and the larger the distance between the second light emitting unit group 221 and the second driving unit 32 is, the smaller the second distance D2 is.
It should be noted that, the light emitting area of the backlight 10 is divided into two sub-areas, the first light source 21 and the second light source 22 are respectively located in the two sub-areas, at this time, the first driving unit 31 provides a first driving current for the first light source 21, the second driving unit 32 provides a second driving current for the second light source 22, the first driving current is transmitted to each light emitting unit 24 in the first light source 21 from the side where the first driving unit 31 is located, the second driving current is transmitted to each light emitting unit 24 in the second light source 22 from the side where the second driving unit 32 is located, and the two driving units are used to respectively drive the two light sources, so that the time-sharing and sub-area control can be better realized.
In one embodiment, the second driving unit 32 is electrically connected to the light emitting units 24 through a plurality of connection lines 40, one connection line 40 corresponds to and is electrically connected to a column of the light emitting units 24 arranged along the first direction, and the driving current output by the second driving unit 32 is transmitted to each light emitting unit 24 of the second light source 22 through the connection line 40.
As shown in fig. 2 and 3, the second light source 22 may be located between the first light source 21 and the second driving unit 32.
It should be noted that the 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 region, so that the length and the resistance of each connection line 40 are reduced, thereby reducing the resistance drop during the transmission of the driving current.
Specifically, the first light source 21 and the second light source 22 may be symmetrical about a first central line of the light emitting area, and the first central line is parallel to the second direction, so that the overall brightness of the display screen is more uniform.
Specifically, each of the first light source 21 and the second light source 22 includes a plurality of third light emitting unit groups 23, and the plurality of third light emitting unit groups 23 are arranged in a first direction and a second direction; each of the third light emitting unit groups 23 includes two adjacent light emitting units 24 arranged along the second direction, and in each of the third light emitting unit groups 23, the two light emitting units 24 have a third distance L along the second direction.
It should be noted that two adjacent third light-emitting unit groups 23 arranged 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.
As shown in fig. 2, all the third pitches L may be equal to make the chromaticity, contrast, and the like of each region of the display more uniform.
It should be noted that, in the first light source 21 and the second light source 22, all the light emitting units 24 in each column of the light emitting units 24 arranged along the first direction may be located on the same straight line, and all the light emitting units 24 in each row of the light emitting units 24 arranged along the second direction may be located on the same straight line.
As shown in fig. 3, the light emitting region includes a central region 11 and an edge region 12 surrounding the central region 11, and the density of the light emitting cells 24 of the central region 11 may be greater than the density of the light emitting cells 24 of the edge region 12, that is, when the area of the central region 11 is equal to the area of the edge region 12, the number of the light emitting cells 24 at the central region 11 is greater than the number of the light emitting cells 24 at the edge region 12.
It should be noted that, when the first light source 21 and the second light source 22 are arranged in the first direction, the light emitting units 24 in the central area 11 of the light emitting area are greatly affected by the resistance drop, and by increasing the number of the light emitting units 24 in the central area 11, the brightness of the central area 11 can be close to the brightness of the edge area 12, so that the overall brightness of the display screen is uniform.
Further, the third pitch L of the third group of light-emitting cells 23 located at the central region 11 is smaller than the third pitch L of the third group of light-emitting cells 23 located at the edge region 12.
Further, in the third light emitting cell group 23 located at the central region 11, the smaller the distance of the third light emitting cell group 23 from the center of the central region 11, the smaller the third distance L.
It should be noted that by adjusting the third pitch L of the third light-emitting unit group 23, the density and number of the light-emitting units 24 in the central region 11 can be increased without increasing the overall number of the light-emitting units 24.
Specifically, referring to fig. 3, at this time, the arrangement direction of two columns of light emitting units 24 of the light emitting module located on the outermost side may be parallel to the corresponding side of the backlight plate 10, and the arrangement direction of two rows of light emitting units 24 of the light emitting module located on the outermost side may be parallel to the corresponding side of the backlight plate 10, so as to ensure the edge brightness and uniformity of the display panel.
As shown in fig. 4, the second light source 22 may be located at a side portion of the first light source 21 in the second direction.
As shown in fig. 5, the first light source 21 may further include a first portion 211 and a second portion 212 arranged in the second direction, and the second light source 22 may be positioned between the first portion 211 and the second portion 212.
Based on the backlight module, the application also provides a liquid crystal display panel, the liquid crystal display panel comprises a display screen body and the backlight module in any one of the above embodiments, and the backlight module is arranged on the back side of the display screen body.
The invention has the beneficial effects that: by setting the distribution of the light-emitting units 24, the distance between two adjacent light-emitting units 24 in the region far away from the driving unit is smaller, the density of the light-emitting units 24 in the region far away from the driving unit can be improved on the premise of not changing the whole number of the light-emitting units 24, namely, the light-emitting units 24 in more numbers are arranged in the region far away from the driving unit, meanwhile, the light-emitting units 24 are arranged in a progressive manner, so that the densities of the light-emitting units 24 in the regions far away from the driving unit are different, thereby reducing or even eliminating adverse effects caused by resistance voltage drop, ensuring the whole brightness of a display picture to be uniform, and improving the picture quality.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The principle and the implementation of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (4)
1. A backlight module is characterized in that the backlight module comprises:
a backlight panel comprising a light emitting region;
the light emitting module is arranged on the backlight plate and positioned in the light emitting area, and comprises a first light source, the first light source comprises a plurality of first light emitting unit groups, and the first light emitting unit groups are arranged in a first direction and a second direction;
the driving module is used for driving the light emitting module and comprises a first driving unit, and the first driving unit is connected with the first light source; the first driving unit is positioned at the side part of the first light source along a first direction and is connected with the first light source, and the second direction is vertical to the first direction;
the light emitting module further comprises a second light source located at a side of the first light source; the second light source comprises a plurality of second light emitting unit groups, the second light emitting unit groups are arranged in a first direction and a second direction, and each second light emitting unit group comprises two adjacent light emitting units which are arranged in the first direction;
the driving module further comprises a second driving unit arranged opposite to the first driving unit, the second driving unit is connected with the second light source, the second light source is located between the first light source and the second driving unit, in each second light emitting unit group, two light emitting units have a second distance along the first direction, and the larger the distance between the second light emitting unit group and the second driving unit is, the smaller the second distance is;
each first light emitting unit group comprises two adjacent light emitting units which are arranged along the first direction; in each of the first light emitting unit groups, two of the light emitting units have a first pitch in the first direction, the greater the distance from the first driving unit to the first light emitting unit, the smaller the first pitch, the first light source and the second light source are arranged in the first direction, the light emitting area includes a central region and an edge region surrounding the central region, the density of the light emitting units in the central region is greater than that of the light emitting units in the edge region, the first light source and the second light source each include a plurality of third light emitting unit groups, and the plurality of third light emitting unit groups are arranged in the first direction and the second direction; each of the third light emitting unit groups includes two light emitting units arranged along the second direction and adjacent to each other, in each of the third light emitting unit groups, two of the light emitting units have a third distance along the second direction, and the third distance between the third light emitting unit groups located at the central region is smaller than the third distance between the third light emitting unit groups located at the edge region.
2. A backlight module according to claim 1, wherein the smaller the distance of the third light emitting unit group from the center of the central region, the smaller the third distance, of the third light emitting unit group at the central region.
3. The backlight module according to claim 1, wherein the first light source and the second light source are symmetrical about a first central line of the light emitting region, and the first central line is parallel to the second direction.
4. A liquid crystal display panel, comprising a display panel and the backlight module of any one of claims 1 to 3, wherein the backlight module is disposed on a back side of the display panel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011404391.5A CN112505966B (en) | 2020-12-02 | 2020-12-02 | Backlight module and liquid crystal display panel |
| PCT/CN2020/139449 WO2022116320A1 (en) | 2020-12-02 | 2020-12-25 | Backlight module and liquid crystal display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011404391.5A CN112505966B (en) | 2020-12-02 | 2020-12-02 | Backlight module and liquid crystal display panel |
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| CN112505966A CN112505966A (en) | 2021-03-16 |
| CN112505966B true CN112505966B (en) | 2022-04-26 |
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| CN113325629A (en) * | 2021-05-28 | 2021-08-31 | Tcl华星光电技术有限公司 | Backlight module, display module and display device |
| CN114236908A (en) * | 2021-12-16 | 2022-03-25 | 深圳市穗晶光电股份有限公司 | Direct type backlight module structure |
| CN114397781A (en) * | 2021-12-21 | 2022-04-26 | 苏州华星光电技术有限公司 | Backlight module, preparation method thereof and display device |
| CN115083368B (en) * | 2022-07-26 | 2024-03-26 | Tcl华星光电技术有限公司 | Charging compensation device, display terminal and charging compensation method |
| CN115547246B (en) * | 2022-11-30 | 2023-03-21 | 惠科股份有限公司 | Backlight module and display device |
| CN115938320A (en) * | 2023-01-29 | 2023-04-07 | 厦门天马微电子有限公司 | Backlight module and display device |
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| Publication number | Publication date |
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| CN112505966A (en) | 2021-03-16 |
| WO2022116320A1 (en) | 2022-06-09 |
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