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WO2018171052A1 - Module de rétroéclairage et dispositif d'affichage - Google Patents

Module de rétroéclairage et dispositif d'affichage Download PDF

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Publication number
WO2018171052A1
WO2018171052A1 PCT/CN2017/088126 CN2017088126W WO2018171052A1 WO 2018171052 A1 WO2018171052 A1 WO 2018171052A1 CN 2017088126 W CN2017088126 W CN 2017088126W WO 2018171052 A1 WO2018171052 A1 WO 2018171052A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
sub
backlight module
guide plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/088126
Other languages
English (en)
Chinese (zh)
Inventor
谢鹏飞
尹帮实
肖广楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201780015310.2A priority Critical patent/CN108885371B/zh
Publication of WO2018171052A1 publication Critical patent/WO2018171052A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame

Definitions

  • the present application relates to the field of display technologies, and in particular, to a backlight module and a display device.
  • a liquid crystal display is a passive light emitting device that requires a backlight unit (BLU) to provide a light source for displaying an image.
  • BLU backlight unit
  • the backlight technologies mainly used in LCDs include: Cold Cathode Fluorescent Lamp (CCFL) backlights and Light Emitting Diodes (LED) backlights. Because LED backlight has many advantages such as high brightness, high color purity, long life, good reliability, and no mercury pollution, the proportion of backlight technology is gradually increasing.
  • the backlight module disclosed in the patent CN1655032A includes a light guide plate 10 , a plurality of LED lamps 13 arranged in parallel on the side of the light guide plate 10 , and a light emitting surface a of the light guide plate 10 is disposed.
  • the prism plate 11 has a prism portion 12. The prism plate 11 is used to adjust the direction in which the light guide plate 10 emits light.
  • the backlight module disclosed in the patent CN104075191A is as shown in FIG. 2, the light guide plate 10 and two rows of LED lamps 13 disposed adjacent to one end of the light guide plate 10.
  • the adjacent two rows of LED lamps 13 are staggered to avoid unevenness of the picture caused by the Hotspot phenomenon.
  • a plurality of LED lamps 13 as light sources are disposed side by side on one side of the light guide plate 10 as shown in FIG. 3, in which case the LEDs are as shown in FIG.
  • the light emitted from the lamp 13 is uniformly incident on the display panel 01 through the light guide plate 10.
  • the LED lamp 13 in order to enable the light emitted by the LED lamp 13 to be uniformly incident on the light guide plate 10, the LED lamp 13 needs to have a certain distance from the light incident surface of the light guide plate 10 during the installation process, so that the LED lamp 13 has a certain mixture. Light distance. Therefore, it is necessary to ensure a certain spacing H between the plastic frame 20 and the light-incident surface of the light guide plate 10. The larger the pitch H, the smaller the screen ratio of the display device. On the basis of this, when the display device is provided with other integrated components, such as a camera, in the non-display area, the area of the display area is increased, so that the screen ratio of the display device is further reduced, which is disadvantageous for improving the display effect.
  • Embodiments of the present application provide a backlight module and a display device.
  • the screen ratio of the display device can be reduced compared to the prior art.
  • a backlight module is provided, and the backlight module is disposed on a non-display side of the display panel. And a backlight module for providing a backlight to the display panel.
  • the backlight module includes a plastic frame.
  • the plastic frame includes a plurality of side walls, and the plurality of side walls are sequentially end to end to form a closed frame for accommodating the display panel, and the plurality of side walls are used for supporting the display panel.
  • the plurality of sidewalls include a first sidewall having at least one recess, and one end of the display panel supported by the first sidewall has a first side; the first side conforms to the shape of the first sidewall.
  • the component to be integrated having the additional function can be disposed in the above-mentioned recessed portion, so that the area of the non-display area occupied by the component to be integrated can be reduced, thereby facilitating the increase of the screen ratio of the display device. And achieve a narrow border or ultra-narrow border design.
  • the sidewall of the plastic frame can define the boundary shape of the backlight module, when the recess is provided with the component to be integrated, the component to be integrated can directly contact the rear casing of the display device, thereby avoiding the The problem that the integrated components and other components in the backlight module are stacked causes a large thickness of the display device.
  • the backlight module further includes a light guide plate, and the periphery of the light guide plate is surrounded by the plastic frame.
  • the light guide plate has a second side.
  • the second side is adjacent to the first sidewall and is the same as the extending direction of the first sidewall; the second side conforms to the shape of the first sidewall.
  • the light guide plate has a second side surface that is the same as the first side wall extending direction and has the same shape, so that the depth of the recessed portion of the first side wall can be increased, and then the components to be integrated are set. After the recessed portion, the area of the non-display area of the display device occupied by the component to be integrated can be further reduced.
  • the light guide plate has a rectangular shape, so that the problem that the process of the light guide plate is cut and the defect rate is increased can be avoided.
  • the backlight module further includes a light source disposed in the plastic frame and located on a sidewall of the plastic frame.
  • the light source provides display light to the display panel.
  • the light source includes a first sub-light source and a second sub-light source.
  • the first sub-light source is located at a recess of the first sidewall
  • the second sub-light source is located at a protrusion of the first sidewall.
  • the light mixing distance of the first sub-light source is smaller than the light mixing distance of the second sub-light source. Since the first sub-light source has a small light mixing distance, the first sub-light source can be disposed closer to the light guide plate during the manufacturing process, so that the depth of the concave portion of the first side wall of the rubber frame can be further increased, and the plastic frame is lowered.
  • the occupancy rate of the non-realistic area of the display device is enabled, so that more space can be vacated for setting the components to be integrated, so that the area of the non-display area occupied by the components to be integrated is further reduced.
  • the first sub-light source is an LED light bar, and the light bar has the characteristics of thin thickness and short mixing distance.
  • the second sub-light source is a plurality of light emitting diodes arranged side by side. The light-emitting diode has a light mixing distance greater than that of the light bar, but the cost is low, which is advantageous for cost control of the product.
  • the first sub-light source and the second sub-light source are LED strips.
  • the second sub-light source can also be placed closer to the light guide plate. Therefore, the first side wall of the plastic frame is disposed close to the display panel, which reduces the area occupied by the plastic frame and the non-display area, and is favorable for increasing the screen ratio.
  • the first sub-light source and the second sub-light source are a plurality of light-emitting diodes arranged side by side.
  • the height of the light emitting diode in the first sub-light source is smaller than the height of the light emitting diode in the second sub-light source, such that the light mixing distance of the first sub-light source is smaller than the light mixing distance of the second sub-light source.
  • the backlight module includes a light guide plate, and the guide
  • the light source is a plurality of light emitting diodes arranged side by side. Based on this, the light emitting diode is located on the first side wall and except for the recessed portion of the first side wall. In addition, the light-emitting diodes on both sides of the depressed portion are disposed obliquely.
  • the area of the non-display area can be vacated, so that the recess of the first sidewall
  • the depth can be further deepened, so as to reduce the distance between the recessed portion and the light guide plate as much as possible, so as to reduce the occupation of the area of the non-display area by the plastic frame.
  • the light source is located on a sidewall of the glue frame except the first sidewall.
  • the light source may be the above-mentioned light-emitting diode light bar or a plurality of light-emitting diodes arranged side by side.
  • a preferred light source is a light bar. In this way, even if the side wall provided with the light source is away from the first side wall, since the thickness of the light bar is small, the area occupied by the light bar in the non-display area is small.
  • the depth of the first sidewall recess portion can be deepened, thereby reducing the occupation of the unrealistic area of the component to be integrated.
  • a display device including the backlight module of the first aspect. It has the same technical effects as the first aspect, and will not be described again here.
  • FIG. 1 is a schematic structural view of a backlight module provided by the prior art
  • FIG. 2 is a schematic structural view of another backlight module provided by the prior art
  • FIG. 3 is a schematic structural view of still another backlight module provided by the prior art
  • Figure 4 is a cross-sectional view taken along the dotted line O-O of Figure 3;
  • FIG. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present application.
  • FIG. 6 is a schematic view showing the assembly structure of the backlight module shown in FIG. 5 and the display panel disposed above the backlight module;
  • FIG. 7 is a schematic structural diagram of a backlight module mounted with a light guide plate having a second side according to an embodiment of the present application.
  • FIG. 8 is a schematic structural view of a backlight module in which a light source is disposed on one side of the light guide plate illustrated in FIG. 7;
  • FIG. 9 is a schematic structural diagram of a backlight module mounted with a light guide plate having a second side according to another embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a backlight module mounted with a light guide plate having a second side according to still another embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a backlight module mounted with a rectangular light guide plate according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a backlight module mounted with a rectangular light guide plate according to another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a backlight module mounted with a rectangular light guide plate and a light emitting diode according to an embodiment of the present application;
  • FIG. 13b is a schematic structural diagram of a backlight module mounted with a rectangular light guide plate and a light emitting diode according to another embodiment of the present application;
  • FIG. 14 is a schematic structural diagram of a backlight module mounted with LEDs arranged side by side according to an embodiment of the present application.
  • FIG. 14b is a schematic structural diagram of a backlight module mounted with LEDs arranged side by side according to another embodiment of the present application.
  • a backlight module is provided, which is disposed on a non-display side of the display panel 01 as shown in FIG. 5, and is used to provide a backlight to the display panel 01.
  • the display panel 01 includes an array substrate 120 and a color filter substrate 121 which are disposed to each other.
  • the array substrate 120 and the color filter substrate 121 are sealed by a sealant 122 to form a liquid crystal cell, and a liquid crystal layer 123 is disposed in the liquid crystal cell.
  • the size of the base substrate 124 in the array substrate 120 is generally large, that is, a part of the base substrate 124 extends out of the liquid crystal cell outside the sealant 122, so that the driving chip can be bound in the extended region. Or set the drive circuit.
  • the base substrate 124 may be a glass substrate or a transparent resin substrate.
  • the backlight module includes a plastic frame 20.
  • the plastic frame 20 includes a plurality of side walls, which are sequentially connected end to end to surround the closed frame for accommodating the display panel 01 for supporting the display panel 01. Specifically, as shown in FIG. 6, each side wall is provided with a support table 21 for supporting the display panel 01.
  • the “plurality” is at least “three”.
  • the display panel 01 is rectangular, so the above-mentioned plastic frame 20 may be a frame structure composed of four side walls that end to end.
  • the plurality of side walls include a first side wall 201 having at least one recess.
  • One end of the display panel 01 supported by the first side wall 201 has a first side surface 101.
  • the first side surface 101 has the same shape as the first side wall 201.
  • the recessed portion of the first side wall 201 is used to set the component 02 to be integrated.
  • a full face screen can be cut by a profile cutting process to obtain a plurality of independent display panels 01 having the first side face 101, and the first side face 101 is uneven.
  • the first substrate 101 of the display panel 01 is cut as shown in FIG. 6 , the first substrate 101 of the display panel 01 is the substrate substrate 124 of the array substrate 120. The side of the cut by the profile cutting process.
  • the first sidewall 201 is also uneven, and the first side 101 conforms to the shape of the first sidewall 201.
  • the plastic frame 20 corresponds to the above.
  • the side wall of the plastic frame 20 is also recessed inward.
  • the side wall of the plastic frame 20 protrudes outward at a position corresponding to the outward protrusion of the first side surface 101.
  • the side wall of the plurality of side walls of the plastic frame 20 for supporting the first side surface 101 of the display panel 01 is the first side wall 201, and the first side surface 101 conforms to the shape of the first side wall 201. Therefore, the depressed portion of the first side wall 201 corresponds to the depressed portion of the first side surface 101 of the display panel 01.
  • components having additional functions such as a camera, a touch device, and the like, can be disposed in the recessed portion, so that the area of the non-display area of the display device occupied by the component to be integrated 02 can be reduced. Further, it is advantageous to increase the screen ratio of the display device and realize a narrow bezel or an ultra-narrow bezel design.
  • the sidewall of the plastic frame 20 can define the boundary shape of the backlight module, when the recessed portion is provided with the component 02 to be integrated, the component to be integrated 02 can directly contact the rear casing of the display device.
  • the problem that the to-be-integrated component 02 and other components in the backlight module are stacked causes a large thickness of the display device to be avoided.
  • the backlight module further includes a light guide plate 10 as shown in FIG. 6 , and the periphery of the light guide plate 10 is surrounded by the plastic frame 20 .
  • the light guide plate 10 may be rectangular as shown in FIG. Or in order to further reduce the area occupied by the above-mentioned component to be integrated 02 occupying the non-display area of the display device.
  • one side of the light guide plate 10 can be cut so that the light guide plate 10 has the second side surface 102 as shown in FIG.
  • the second side surface 101 is adjacent to the first side wall 201.
  • the second side surface 102 extends in the same direction as the first side wall 201, and the second side surface 102 conforms to the shape of the first side wall 201.
  • the same extending direction means that the light guide plate 10 and the plastic frame 20 have four sides as an example.
  • the above four sides in the plan view include two sides extending in the horizontal direction and two sides extending in the vertical direction. Therefore, when the extending direction of the second side surface 102 is the same as the extending direction of the first side wall 201, the second side surface 102 and the first side wall 201 both extend in the horizontal direction, or both extend in the vertical direction.
  • the thickness of the first side wall 201 is omitted in FIG. 7 instead of the solid line, and only a part of the display device is drawn.
  • the second side surface 102 has the same shape as the first side wall 201. Therefore, the recessed portion of the first side wall 201 corresponds to the second side surface 102 of the light guide plate and the recessed portion of the first side surface 101 of the display panel 01. In this way, by cutting the light guide plate 10, the depth of the depressed portion can be increased, so that the plastic frame 20 can be further recessed inward in the depressed portion. Further, when the component to be integrated 02 is disposed on the recessed portion, the area of the non-display area of the display device occupied by the component to be integrated 02 can be further reduced.
  • the backlight module further includes a light source 30 disposed in the plastic frame 20 and located on the sidewall of the plastic frame 20.
  • the light source 30 is recessed in the first sidewall 201.
  • the light mixing distance of the portion may be smaller than the light mixing distance of the light source 30 at the convex portion of the first side wall 201.
  • the light source 30 includes a first sub-light source 301 and a second sub-light source 302 as shown in FIG. 8 is a light guide plate 10 having the second side 102, and The light emitted by the one sub-light source 301 and the second sub-light source 302 is incident on the second side surface 102 as an example.
  • the first sub-light source 301 is located at the recessed portion of the first sidewall 201 such that the light emitted by the first sub-light source 301 is incident on the light incident surface b1 or the light incident surface b3 of the light guide plate 10.
  • the second sub-light source 302 is located at the convex portion of the first sidewall 201 such that the light emitted by the second sub-light source 302 is incident on the light incident surface b2 of the light guide plate 10.
  • the first sub-light source 301 is a light-emitting diode light bar, such as a high-power integrated chip on board light (COB) light bar.
  • the COB light bar has the characteristics of thin thickness and short light mixing distance.
  • the COB light bar can be fixed to the side of the first side wall 201 of the plastic frame 20 near the light incident surface b1 and the light incident surface b3 of the light guide plate 10 by an electric welding process.
  • the second sub-light source 302 can be a plurality of light emitting diodes arranged side by side.
  • the light-mixing distance of the light-emitting diode is greater than that of the COB light bar, but the cost is low, which is beneficial to the cost control of the product.
  • the plurality of light emitting diodes may be fabricated on a flexible printed circuit (FPC), but the flexible circuit board is fixed to the light incident surface b2 of the light guide plate 10 on the first side wall 201. One side.
  • the first sub-light source 301 can be disposed closer to the light-incident surface b1 and the light-incident surface b3 during the manufacturing process, so that the plastic frame 20 is The depth of the recessed portion of one side wall 201 can be further increased, and the occupancy ratio of the plastic frame 20 to the unrealistic area of the display device is reduced, so that more space can be vacated for setting the component 02 to be integrated, so that the component to be integrated 03 is occupied.
  • the area of the above non-display area is further reduced.
  • the first sub-light source 301 and the second sub-light source 301 may be LED strips as shown in FIG. 9 .
  • the second sub-light source 302 can be closer to the light incident surface b1 with respect to the scheme shown in FIG. Therefore, the first sidewall 201 of the plastic frame 20 is disposed close to the display panel 01, thereby reducing the area occupied by the plastic frame 20 in the non-display area, which is advantageous for increasing the screen ratio.
  • the light source 30 includes the first sub-light source 301 and the second sub-light source 302 described above.
  • the first sub-light source 301 and the second sub-light source 302 are a plurality of LEDs arranged side by side, wherein the height of the LEDs in the first sub-light source 301 is smaller than the height of the LEDs in the second sub-light source 302. .
  • the light mixing distance of the first sub-light source 301 is made smaller than the light mixing distance of the second sub-light source 302.
  • the light emitting diode in the first sub-light source 301 may be a 0.3T light emitting diode.
  • a 3003 LED lamp (3.0 mm in length and 0.3 mm in height), or a 1803 LED lamp (1.8 mm in length and 0.3 mm in height).
  • the light-emitting diode in the second sub-light source 302 is a 0.4T light-emitting diode, such as a 3004 LED lamp (3.0 mm in length and 0.4 mm in height).
  • the first sub-light source 301 disposed opposite to the light-incident surface b1 in FIG. 10 may be disposed closer to the light-incident surface b1 to increase the depth of the depressed portion of the first sidewall 201.
  • the light-emitting diodes in the first sub-light source 301 and the second sub-light source 302 can each adopt a light-emitting diode with a small height, such as the above-mentioned 0.3T light-emitting diode.
  • the recessed portion and the protruding portion of the first sidewall 201 in the plastic frame 20 are included in the present application.
  • the number and setting position are not limited.
  • the above description is made by exemplifying the manner in which the first sub-light source 301 and the second sub-light source 302 are disposed by cutting the light guide plate 10 so as to have the second side surface 102 conforming to the shape of the first side wall 201.
  • the light guide plate 10 is not required to be cut, that is, the light guide plate 10 is rectangular.
  • the manners and types of the first sub-light source 301 and the second sub-light source 302 are the same as described above, and are not described herein again.
  • the first sub-light source 301 is a light-emitting diode light bar, such as a COB light bar
  • the second sub-light source 302 is a plurality of light-emitting diodes arranged side by side, taking a 5.5-inch display panel as an example
  • the light source 30 is The design method is illustrated.
  • the backlight width L1 that is, the width of the light guide plate 10 is 69.2 mm
  • the length L3 of the first sub-light source 301 is 22.3 mm
  • the COB light bar constituting the first sub-light source 301 has 10 small wicks.
  • the COB strip has a thickness D2 of 2.8 mm.
  • the length L2 of the second sub-light source 302 is 24.6 mm.
  • the height D1 of the six light-emitting diodes constituting the second sub-light source 302 was 3.8 mm.
  • the COB light bar has a small thickness D2 and a short light mixing distance. Therefore, the COB light bar can be disposed closer to the light incident surface of the light guide plate 10, thereby reducing the occupation ratio of the plastic frame 20 to the non-display area.
  • the current flowing into the first sub-light source 301 and the second sub-light source 302 can be adjusted, so that the brightness of the front backlight provided by the backlight module to the display panel 01 can be achieved.
  • the preset value may be 11000 Lux.
  • the distribution density of the light-pointing point of the light guide plate 10 can also be adjusted as needed. For example, when the brightness of the light emitted by the backlight module in some areas is large, the distribution density of the light-pointing point of the light guide plate 10 can be appropriately reduced, and vice versa.
  • the light source 30 includes two different types of sub-light sources as an example.
  • the light guide plate 10 is rectangular, and the light source 30 is constituted by one type of sub-light source as an example, and other arrangements of the light source 30 will be described.
  • the light source 30 is composed of a plurality of light emitting diodes arranged side by side. Based on this, since the plurality of light emitting diodes need to be arranged side by side, the depth of the depressed portion of the first side wall 201 is limited in order to avoid interference with the arrangement state of the light emitting diodes.
  • the present application can increase the depth of the recessed portion of the first sidewall 201 by adjusting the placement angle of a portion of the light-emitting diodes in the light source 30.
  • the light emitting diode is located on the first sidewall 201 and is apart from the recess of the first sidewall 201.
  • the light-emitting diodes on both sides of the depressed portion are disposed obliquely.
  • the plastic frame 20 shown in FIG. 13a has a first side wall 201, and the plastic frame 20 in FIG. 13b has two opposite first side walls 201.
  • the area of the portion of the non-display region C2 can be vacated, so that the first sidewall 201
  • the depth of the depressed portion can be further deepened, so as to reduce the distance between the recessed portion and the light guide plate 10 of the first sidewall 201 as much as possible, so as to reduce the occupation of the area of the non-display area C2 by the plastic frame 20.
  • the arrangement of the light source 30 is, for example, as shown in the figure. 14a or 14b, the light source 30 can be located on a side wall of the bezel 20 other than the first side wall 201.
  • the sidewall of the light source 30 is disposed away from the first sidewall 201 and is the same as the extending direction of the first sidewall 201.
  • the extending direction of the sidewall of the light source is provided with the first side. The direction in which the walls 201 extend is different.
  • the light source 30 may be the above-mentioned LED strip or a plurality of LEDs arranged side by side.
  • the preferred light source 30 is a COB light bar.
  • the light guide plate 10 is not disposed near the first sidewall 201 of the plastic frame 20, the depth of the recessed portion of the first sidewall 201 can be deepened, so as to reduce the area of the non-realistic region C2 occupied by the component 02 to be integrated. the goal of.
  • the pitch of the adjacent two light emitting diodes may be adjusted as needed.
  • the pitch of the adjacent two light emitting diodes is appropriately reduced to reduce the light mixing distance of the light source 30, thereby reducing the area of the unrealistic area C2 occupied by the plastic frame 20.
  • the base substrate 124 of the array substrate 120 may be bonded to the driving chip in the non-display area C2 as shown in FIG.
  • the position of the orthographic projection F of the driving chip on the plastic frame 20 overlaps with the position of the protruding portion of the first side wall 201.
  • a display device including the backlight module of any of the structures described above is provided.
  • the technical effects are the same as those of the backlight module provided in the foregoing embodiment, and details are not described herein again.
  • the display device may be any liquid crystal display device, such as a liquid crystal television, a digital photo frame, a mobile phone, a tablet computer, a watch, or a visual smart wearable device, and any product or component having a display function.
  • liquid crystal display device such as a liquid crystal television, a digital photo frame, a mobile phone, a tablet computer, a watch, or a visual smart wearable device, and any product or component having a display function.

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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)
  • Planar Illumination Modules (AREA)

Abstract

Un module de rétroéclairage et un dispositif d'affichage, liés au domaine technique des affichages. Lorsqu'une partie intégrée (02) est disposée dans une zone de non-affichage (C2) du dispositif d'affichage, le rapport écran-corps du dispositif d'affichage est réduit. Le module de rétroéclairage est disposé sur le côté de non-affichage d'un panneau d'affichage (01) et est utilisé pour fournir au panneau d'affichage (01) une source de rétroéclairage. Le module de rétroéclairage comprend un cadre en plastique (20). Le cadre en plastique (20) comprend de multiples parois latérales. Les multiples parois latérales sont reliées séquentiellement tête-bêche pour former un cadre fermé utilisé pour recevoir le panneau d'affichage (01). Les multiples parois latérales sont utilisées pour supporter le panneau d'affichage (01). De plus, les multiples parois latérales comprennent une première paroi latérale (201) pourvue d'au moins une partie évidée Le panneau d'affichage (01) est pourvu d'une première surface latérale (101) au niveau d'une extrémité supportée par la première paroi latérale (201). La première surface latérale (101) est de forme cohérente avec la première paroi latérale (201). Le module de rétroéclairage est utilisé pour fournir au panneau d'affichage (01) une source de rétroéclairage.
PCT/CN2017/088126 2017-03-24 2017-06-13 Module de rétroéclairage et dispositif d'affichage Ceased WO2018171052A1 (fr)

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CN201780015310.2A CN108885371B (zh) 2017-03-24 2017-06-13 一种背光模组及显示装置

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CN118759747B (zh) * 2019-02-22 2025-10-28 武汉华星光电技术有限公司 显示面板
CN109976051B (zh) * 2019-04-15 2024-03-26 武汉华星光电技术有限公司 显示面板
CN110007518B (zh) * 2019-04-15 2024-02-09 武汉华星光电技术有限公司 背光模组及显示装置

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