CN108897166B - Side-in backlight module for realizing HDR partition and liquid crystal display device - Google Patents
Side-in backlight module for realizing HDR partition and liquid crystal display device Download PDFInfo
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- CN108897166B CN108897166B CN201810798459.9A CN201810798459A CN108897166B CN 108897166 B CN108897166 B CN 108897166B CN 201810798459 A CN201810798459 A CN 201810798459A CN 108897166 B CN108897166 B CN 108897166B
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- 238000005192 partition Methods 0.000 title claims abstract description 25
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 22
- 230000017525 heat dissipation Effects 0.000 claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 239000011324 bead Substances 0.000 claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 239000004411 aluminium Substances 0.000 claims description 9
- 238000000638 solvent extraction Methods 0.000 abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- 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
- G02F1/133601—Illuminating devices for spatial active dimming
-
- 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
- G02F1/133628—Illuminating devices with cooling means
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of backlight modules, in particular to a side-in type backlight module for realizing HDR (high-speed dynamic range) partitioning, which structurally comprises a heat-dissipation aluminum extrusion, a light guide plate, light bars and an optical diaphragm, wherein each light bar comprises a PCB (printed circuit board) and a plurality of LED (light-emitting diode) lamp beads which are fixed on the PCB in a row; the adjacent light bars are arranged in a vertically staggered mode, an overlapping area exists between the adjacent light bars, the corresponding adjacent light guide plates are also arranged in a vertically staggered mode, and the light mixing distance from the light emitting surface of each light bar to the light incident surface of the corresponding light guide plate in the horizontal direction is equal. The side-in backlight module not only solves the heat dissipation problem of a plurality of lamp strips but also meets the requirement of the thickness of the whole liquid crystal display device on the ultrathin size on the basis of having enough HDR partitions.
Description
Technical Field
The invention relates to the technical field of backlight modules, in particular to a side-in type backlight module for realizing HDR partition and a liquid crystal display device.
Background
The backlight module is one of the main components of the liquid crystal display panel and is used for providing sufficient light sources with uniform brightness and distribution so as to normally display images. The backlight module can be classified into a front type and a backlight type, and the backlight type can be classified according to the size requirement by the positions of the lamps, and is further classified into a side type (i.e. side type light incidence) and a direct type.
In order to achieve the HDR display effect with high dynamic contrast, the current side-type backlight module and the liquid crystal display device thereof adopt the HDR multi-partition control mode, and the HDR multi-partition control mode mainly includes the following two modes: the first HDR partitioning mode is shown in fig. 1, and mostly adopts 1 light bar 3, and 1 row of LED lamp beads is arranged on the light bar 3, and the LED lamp beads adopt a multi-string and multi-parallel design, wherein each string of circuits is controlled to be on or off independently, and as a partition, the number of parallel circuits of the light bar 3 is totally the same, and thus, the number of partitions is divided. The horizontal or longitudinal regional Dimming is closed by independently controlling the opening and closing of the subareas, the implementation mode of the Local Dimming subareas is mostly limited by the serial-parallel design of the light bars 3, the number of the subareas is small, and the HDR display effect is not ideal; the second HDR partitioning method is shown in fig. 2, in which two rows of LED lamp beads are arranged on 1 lamp strip 3, the upper row of LED lamp beads and the lower row of LED lamp beads are arranged in parallel in the vertical direction, and meanwhile, two layers of light guide plates 2 are used to correspond to the light incident on the upper row of LED lamp beads and the lower row of LED lamp beads, wherein the two rows of LED lamp beads are fixed on the same PCB board, so that the light emergent surfaces are identical in height, and the corresponding light guide plates 2 are also identical in size design and flush with the ports of the light incident. The single-row LED lamp beads can realize N partitions if N LED lamp beads are connected in parallel, the N + N partitions can be realized by the upper and lower rows of LED lamp beads in total, the two rows of LED lamp beads can be controlled in a serial-parallel mode, and the total number of the partitionable regions is greatly increased compared with that of the first mode. However, the second approach also has some significant drawbacks: 1) the LED lamp beads are densely arranged, heat emitted by each LED lamp bead is concentrated on the upper half part of the lamp strip 3, a large amount of heat is accumulated, the heat cannot be quickly conducted out through the heat dissipation aluminum extrusion 1, and the service life of the LED lamp beads is seriously influenced; 2) because the number of serial-parallel partitions is large, the extension length of the PCB is large, so that the height of the whole PCB is too large, the thickness of the whole liquid crystal backlight module or the whole television is very thick, the requirement of side-type light incidence on the aspect of ultrathin size cannot be met, and the whole television is heavy.
Disclosure of Invention
The invention aims to provide a side-in type backlight module for realizing HDR (high-definition) subareas and a liquid crystal display device adopting the backlight module aiming at the defects in the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a realize side income formula backlight unit of HDR subregion, including the crowded, the crowded light guide plate of heat dissipation aluminium of being fixed in of heat dissipation aluminium, set up in the lamp strip of light guide plate income light side and set up in the optics diaphragm of light guide plate top, the lamp strip includes the PCB board and is the LED lamp pearl that row set up with being fixed in a plurality of on the PCB board, the lamp strip is fixed in the crowded lateral wall of heat dissipation aluminium, its characterized in that: at least two light bars and at least two light guide plates matched with the light bars are arranged, and a row of LED lamp beads are arranged on a PCB (printed circuit board) of each light bar;
the adjacent light bars are arranged in a vertically staggered manner, an overlapping area exists between the adjacent light bars, the corresponding adjacent light guide plates are also arranged in a vertically staggered manner, and the light mixing distance from the light emitting surface of each light bar to the light incident surface of the corresponding light guide plate in the horizontal direction is equal.
In the technical scheme, the side wall of the heat dissipation aluminum extrusion is sequentially provided with more than two stages of steps, and the light bars are respectively fixed on the corresponding first-stage step surfaces.
In the technical scheme, the cross section of the step is L-shaped.
Among the above-mentioned technical scheme, form the recess between the adjacent two-stage step, the one end of every lamp strip is fixed in the recess that corresponds.
The invention also provides a liquid crystal display device which comprises a backlight module and a liquid crystal panel arranged on the backlight module, wherein the backlight module is the lateral-entering backlight module for realizing HDR partition.
The invention has the beneficial effects that:
the invention discloses a side-in backlight module for realizing HDR partition, which comprises a heat-radiating aluminum extrusion, a light guide plate fixed on the heat-radiating aluminum extrusion, a light bar arranged at the light inlet side of the light guide plate and an optical diaphragm arranged above the light guide plate, wherein the light bar comprises a PCB (printed circuit board) and a plurality of LED lamp beads arranged in rows and fixed on the PCB, the light bar is fixed on the side wall of the heat-radiating aluminum extrusion, at least two light bars and the light guide plate matched with the light bars are arranged, and a row of LED lamp beads is arranged on the PCB of each light; the adjacent light bars are arranged in a vertically staggered manner, an overlapping area exists between the adjacent light bars, the corresponding adjacent light guide plates are also arranged in a vertically staggered manner, and the light mixing distance from the light emitting surface of each light bar to the light incident surface of the corresponding light guide plate in the horizontal direction is equal, so that higher light emitting efficiency is ensured. By adopting the structure, more HDR partition control can be realized by more than two lamp strips, the HDR display effect with high dynamic contrast is achieved, meanwhile, the adjacent lamp strips are arranged in a vertically staggered manner, and an overlapping area exists between the adjacent lamp strips, so that the height of a single PCB can meet the space of routing of the partitions of the single lamp strips, and the total height formed by arranging all the lamp strips is greatly reduced compared with the sum of the heights of all the lamp strips, thereby realizing the thickness reduction of the whole liquid crystal backlight module; on the other hand, the heat of all lamp strips can not be too concentrated, and can be rapidly conducted away through the side wall extruded by the heat dissipation aluminum. Therefore, the lateral backlight module not only solves the heat dissipation problem of a plurality of lamp strips, but also meets the requirement of the thickness of the whole liquid crystal display device on the ultra-thin size on the basis of having enough HDR partitions to realize the HDR display effect with high dynamic contrast.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a first HDR partitioning method of a side-type backlight module in the prior art.
FIG. 2 is a schematic diagram of a second HDR partition mode of a side-type backlight module in the prior art.
Fig. 3 is a schematic structural diagram of an embodiment 1 of a lateral backlight module for implementing HDR partitioning according to the present invention.
Fig. 4 is a schematic partial enlarged structural view of an embodiment 1 of a lateral backlight module for implementing HDR partitioning according to the present invention.
Fig. 5 is a schematic structural diagram of an embodiment 2 of a lateral backlight module for implementing HDR partitioning according to the present invention.
Fig. 6 is a schematic partial enlarged structural view of an embodiment 2 of a lateral backlight module for implementing HDR partitioning according to the present invention.
Fig. 7 is a schematic view of a partial structure of a cross section of a heat dissipation aluminum extrusion of embodiment 3 of a side-entry backlight module for implementing HDR partitioning according to the present invention.
Fig. 8 is a schematic view of a partial structure of a cross section of a heat dissipation aluminum extrusion of an embodiment 4 of a side-entry backlight module for implementing HDR partitioning according to the present invention.
Reference numerals:
1, extruding heat dissipation aluminum;
a light guide plate 2, a first light guide plate 21, and a second light guide plate 22;
a light bar 3, a first light bar 31 and a second light bar 32;
an optical film 4;
a groove 6.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings.
Example 1:
a liquid crystal display device of this embodiment, including backlight unit and the liquid crystal display panel who sets up on backlight unit, this backlight unit is the side income formula backlight unit that realizes the HDR subregion, its structure is as shown in fig. 3, including crowded 1 of heat dissipation aluminium, be fixed in crowded 1 light guide plate 2 of heat dissipation aluminium, set up in the lamp strip 3 of light guide plate 2 income light side and set up in the optics diaphragm 4 of light guide plate 2 top, lamp strip 3 includes the PCB board and is the LED lamp pearl that row set up with a plurality of that is fixed in on the PCB board, lamp strip 3 is fixed in the crowded 1 lateral wall of heat dissipation aluminium. In this embodiment, lamp strip 3 and all be provided with two with 3 assorted light guide plates 2 of lamp strip: the first light bar 31, the first light guide plate 21 corresponding to the first light bar 31, the second light bar 32, and the second light guide plate 22 corresponding to the second light bar 32. A row of LED lamp beads is arranged on the PCB of each lamp strip 3, if N LED lamp beads are connected in series in a single row, N HDR partitions can be realized, and each lamp strip 3 can independently control the HDR partitions. Specifically, the first light bar 31 and the second light bar 32 are arranged in a vertically staggered manner, and an overlapping area exists between the first light bar 31 and the second light bar. Correspondingly, the first light guide plate 21 and the second light guide plate 22 are arranged in a vertically staggered manner, the light incident surfaces of the first light guide plate 21 and the second light guide plate 22 are not flush, and a certain light mixing distance is respectively kept between the light incident surfaces of the corresponding light bars 3, namely, the light mixing distance between the light incident surface of the light guide plate 2 in the corresponding horizontal direction and the light emergent surface of each light bar 3 is equal, so that a high light emergent effect is ensured. Adopt above-mentioned structure, two lamp strips 3 can realize more HDR partition control, reach the HDR display effect of high dynamic contrast, simultaneously, because be about staggered arrangement between two lamp strips 3 and there is overlap region between the two, the space of walking is walked in single lamp strip 3 subregion can enough be satisfied to the height of single PCB board like this, the total height that forms after can making two lamp strips 3 arrange again compares the high sum of two lamp strips 3 and has great reduction, thereby can realize whole liquid crystal backlight unit's thickness attenuate.
In this embodiment, as shown in fig. 4, corresponding to the above position layout of the light bars 3, two steps 5, namely a first step 51 and a second step 52, are sequentially disposed on the side wall of the heat dissipation aluminum extrusion 1, as a preferred embodiment, the cross sections of all the steps 5 are L-shaped, the first light bar 31 is fixed on the step surface of the first step 51, and the second light bar 32 is fixed on the step surface of the second step 52. During the installation, the up end of second lamp strip 32 will be higher than the terminal surface of second level step 52, and the part that exceeds is the overlapping region of first lamp strip 31 and second lamp strip 32 to realized being about staggered arrangement between first lamp strip 31 and the second lamp strip 32 and having overlapping region between the two, and then guaranteed that two lamp strips 3 total heights after arranging have great reduction, in order to realize the ultra-thin thickness of whole liquid crystal backboard module. In addition, the side wall of the heat dissipation aluminum extrusion 1 adopts the structure design, so that the heat of all the lamp strips 3 cannot be concentrated too much, and the heat can be rapidly guided away through the side wall of the heat dissipation aluminum extrusion 1.
Compared with the prior art, the lateral backlight module has enough HDR partitions to realize the HDR display effect with high dynamic contrast, not only well solves the heat dissipation problem of a plurality of light bars 3, but also meets the requirement of the thickness of the whole liquid crystal display device on the ultrathin size.
Example 2:
the main technical solution of this embodiment is the same as that of embodiment 1, except that:
as shown in fig. 5 and 6, a groove 6 is formed between the first step 51 and the second step 52, that is, a small section extends from a side end of the second step 52 along a horizontal direction of the step surface, the first light bar 31 is fixed on the step surface of the first step 51, one end of the first light bar 31 is located in the groove 6, the second light bar 32 is fixed on the step surface of the second step 52, because a small section extends from a side end of the second step 52, an overlapping area is formed between the step surface of the second step 52 and the step surface of the first step 51, after the two light bars 3 are installed, it is ensured that the two light bars 3 are arranged in a vertically staggered manner, and an overlapping area exists between the two light bars, and meanwhile, heat of all the light bars 3 is not too concentrated, and can be rapidly guided away through a side wall of the heat dissipation aluminum extrusion 1.
Compared with the prior art, the lateral backlight module has enough HDR partitions to realize the HDR display effect with high dynamic contrast, not only well solves the heat dissipation problem of a plurality of light bars 3, but also meets the requirement of the thickness of the whole liquid crystal display device on the ultrathin size.
Example 3:
the main technical solution of this embodiment is the same as that of embodiment 1, except that:
the lamp strips and the light guide plates matched with the lamp strips are all provided with three. Correspondingly, as shown in fig. 7, the side wall of the heat dissipation aluminum extrusion 1 is sequentially provided with three steps 5, which are: first step 51, second step 52 and tertiary step 53, three lamp strip are fixed in respectively on the step face of a step 5 that corresponds, and all steps 5's structure is the same with embodiment 1, and the cross section of step 5 all is the L type.
Compared with the prior art, the lateral backlight module has enough HDR partitions to realize the HDR display effect with high dynamic contrast, not only well solves the heat dissipation problem of a plurality of light bars 3, but also meets the requirement of the thickness of the whole liquid crystal display device on the ultrathin size.
Example 4:
the main technical solution of this embodiment is the same as that of embodiment 2, except that:
the lamp strips and the light guide plates matched with the lamp strips are all provided with three. Correspondingly, as shown in fig. 8, the side wall of the heat dissipation aluminum extrusion 1 is sequentially provided with three steps 5, which are: a first step 51, a second step 52 and a third step 53, and all steps 5 have the same structure as that of embodiment 2, i.e., grooves 6 are formed between the first step 51 and the second step 52 and between the second step 52 and the third step 53. The first lamp strip is fixed on the step surface of the first step 51, one end of the first lamp strip is located in the groove 6 between the first step 51 and the second step 52, the second lamp strip is fixed on the step surface of the second step 52, one end of the second lamp strip is located in the groove 6 between the second step 52 and the third step 53, and the third lamp strip is fixed on the step surface of the third step 53.
Compared with the prior art, the lateral backlight module has enough HDR partitions to realize the HDR display effect with high dynamic contrast, not only well solves the heat dissipation problem of a plurality of light bars 3, but also meets the requirement of the thickness of the whole liquid crystal display device on the ultrathin size.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. The utility model provides a realize side income formula backlight unit of HDR subregion, includes that heat dissipation aluminium is crowded, be fixed in the crowded light guide plate of heat dissipation aluminium, set up in the lamp strip of light guide plate income light side and set up in the optics diaphragm of light guide plate top, the lamp strip includes the PCB board and is the LED lamp pearl that row set up with being fixed in a plurality of on the PCB board, the lamp strip is fixed in the crowded lateral wall of heat dissipation aluminium, its characterized in that: at least two light bars and at least two light guide plates matched with the light bars are arranged, and a row of LED lamp beads are arranged on a PCB (printed circuit board) of each light bar;
the adjacent light bars are arranged in a vertically staggered manner, overlapping areas exist between the adjacent light bars, the corresponding adjacent light guide plates are also arranged in a vertically staggered manner, and the light mixing distance from the light emitting surface of each light bar to the light incident surface of the corresponding light guide plate in the horizontal direction is equal;
the side wall of the heat dissipation aluminum extrusion is sequentially provided with more than two stages of steps, the lamp strips are respectively fixed on the corresponding step faces of one stage, a groove is formed between every two adjacent stages of steps, one end of each lamp strip is fixed in the corresponding groove, and the vertical height of the groove from the bottom of the next stage of step is smaller than the height of the lamp strip.
2. The edge-lit backlight module of claim 1, wherein: the cross section of the step is L-shaped.
3. The utility model provides a liquid crystal display device, includes backlight unit and sets up in liquid crystal display panel on the backlight unit which characterized in that: the backlight module is the lateral type backlight module for realizing HDR partition as claimed in any one of claims 1 to 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810798459.9A CN108897166B (en) | 2018-07-19 | 2018-07-19 | Side-in backlight module for realizing HDR partition and liquid crystal display device |
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| CN201810798459.9A CN108897166B (en) | 2018-07-19 | 2018-07-19 | Side-in backlight module for realizing HDR partition and liquid crystal display device |
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| CN108897166B true CN108897166B (en) | 2021-06-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109613759B (en) * | 2019-02-20 | 2024-01-09 | 重庆惠科金扬科技有限公司 | Lamp strip, backlight module and display device |
| CN110764311A (en) * | 2019-11-08 | 2020-02-07 | 深圳创维－Rgb电子有限公司 | Liquid crystal module and display device |
| CN113138492A (en) * | 2020-01-20 | 2021-07-20 | 华为技术有限公司 | Backlight module and electronic equipment |
| CN111402825B (en) * | 2020-03-31 | 2022-08-19 | 浙江宇视科技有限公司 | Screen correction method, device and system and logic board |
| CN111753655A (en) * | 2020-05-18 | 2020-10-09 | 深圳市隆利科技股份有限公司 | Electronic equipment for full screen fingerprint identification |
| CN112114396A (en) * | 2020-10-20 | 2020-12-22 | 京东方科技集团股份有限公司 | Backlight module and display device |
| WO2024055206A1 (en) * | 2022-09-14 | 2024-03-21 | 京东方科技集团股份有限公司 | Backlight module, display module and display device |
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