CN110045545B - Display device - Google Patents
Display device Download PDFInfo
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- CN110045545B CN110045545B CN201910413742.XA CN201910413742A CN110045545B CN 110045545 B CN110045545 B CN 110045545B CN 201910413742 A CN201910413742 A CN 201910413742A CN 110045545 B CN110045545 B CN 110045545B
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- Prior art keywords
- display panel
- circuit board
- flexible circuit
- light source
- ultraviolet light
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- 239000003292 glue Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims description 29
- 239000000084 colloidal system Substances 0.000 claims description 11
- 230000001954 sterilising effect Effects 0.000 claims description 4
- 230000000249 desinfective effect Effects 0.000 claims 1
- 241000894006 Bacteria Species 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 239000006059 cover glass Substances 0.000 description 5
- 239000000565 sealant Substances 0.000 description 5
- 230000008033 biological extinction Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display device. A display device comprises a display panel and a backlight module, wherein the backlight module comprises: the flexible circuit board comprises a first surface and a second surface which are oppositely arranged; the backlight light sources are arranged on the first surface of the flexible circuit board and positioned in the orthographic projection of the display panel on the flexible circuit board; the flexible circuit board comprises a flexible circuit board, a plurality of ultraviolet light sources, a plurality of glue bodies and a plurality of ultraviolet light sources, wherein the plurality of ultraviolet light sources are arranged on the second surface of the flexible circuit board and are located at the first end part of the edge of the flexible circuit board, the first end part of the flexible circuit board is fixedly connected with the upper surface of the display panel through the glue bodies, and the upper surface of the display panel is the surface far away from one side of the backlight module. In the invention, the ultraviolet light source is accommodated in the outer frame of the backlight module and positioned on the light-emitting surface of the display panel, so that the ultraviolet light of the ultraviolet light source can better kill bacteria on the light-emitting surface of the display panel and is safer to use.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display device.
[ background of the invention ]
Fig. 1 is a schematic view of a prior art sterilization display apparatus 100.
As shown in fig. 1, in the related art, a sterilization display device 100 includes a display device 110 and an ultraviolet lamp 120. The display device 110 includes a cover glass 111, a display panel 112, and a backlight module 113. The display panel 112 is located between the cover glass 111 and the backlight module 113. The ultraviolet lamp tube 120 is located at one side of the cover glass 111. The ultraviolet lamp 120 uses ultraviolet light to kill bacteria in the display device 110. However, the ultraviolet lamp 120 is located outside the display device 110, and the structure of the sterilization display device 100 is complicated; in the uv lamp 120, the uv light source is disposed in quartz glass, and although the quartz glass increases the light extraction rate of the uv light from the uv light source, the quartz glass is expensive.
[ summary of the invention ]
The invention provides a display device.
A display device comprises a display panel and a backlight module, wherein the backlight module comprises:
a flexible circuit board including a first surface and a second surface disposed opposite to each other;
the backlight light sources are arranged on the first surface of the flexible circuit board and positioned in the orthographic projection of the display panel on the flexible circuit board;
the flexible circuit board comprises a flexible circuit board, a plurality of ultraviolet light sources, a plurality of first end portions and a plurality of second end portions, wherein the plurality of ultraviolet light sources are arranged on the second surface of the flexible circuit board and are located at the first end portions of the edges of the flexible circuit board, the first end portions of the flexible circuit board are fixedly connected with the upper surface of the display panel through glue, and the upper surface of the display panel is the surface far away from one side of the backlight module.
Optionally, the display panel further includes an array substrate and a color film substrate which are arranged opposite to each other, the array substrate includes a first edge region which exceeds one side of the color film substrate, the first edge region is a step region of the display panel, and the first end portion is fixed in the step region through a glue.
Optionally, the backlight light source includes a first light emitting diode, the first light emitting diode is rectangular, the first light emitting diode includes a first bottom surface and a first top surface, the first bottom surface and the first top surface are oppositely disposed, the first bottom surface contacts with the first surface of the flexible circuit board, the first top surface emits light, and the first top surface is a side of the first light emitting diode close to the display panel;
the ultraviolet light source comprises a second light emitting diode, the second light emitting diode is cuboid, the second light emitting diode comprises a second bottom surface, a second top surface and a second side surface, the second bottom surface and the second top surface are oppositely arranged, the second bottom surface is in contact with the second surface of the flexible circuit board, the second side surface is located between the second bottom surface and the second top surface, the second side surface emits light, and the second side surface is close to one side of the center of the display panel.
Optionally, the second bottom surface of the second light emitting diode is higher than the plane of the display panel along a direction perpendicular to the plane of the display panel.
Optionally, in a direction parallel to the plane of the display panel, a distance between the second side surface of the second light emitting diode and the color filter substrate is greater than 0.3 mm and less than 0.5 mm.
Optionally, the backlight module further includes an outer frame, the outer frame accommodates the display panel, the flexible circuit board, the backlight source, and the ultraviolet source, and the second surface of the flexible circuit board is fixed to the outer frame through a glue.
Optionally, the display panel includes a display area, and the outer frame exposes the display area of the display panel and covers the ultraviolet light source.
Optionally, the colloid is a heat dissipating colloid.
Optionally, the ultraviolet light source has an emission wavelength greater than 200 nanometers and less than 275 nanometers.
Optionally, the ultraviolet light source has a luminous intensity of greater than 70 μ W/cm2。
Optionally, the flexible circuit board includes a first line and a second line that are independently turned on and off, the backlight source is electrically connected to the first line, and the ultraviolet source is electrically connected to the second line.
Optionally, the display device further includes a control chip, and the control chip is electrically connected to the first line and the second line, respectively, and is configured to control the backlight light source to be turned on or control the ultraviolet light source to be turned on individually.
In the invention, the flexible circuit board comprises a first surface and a second surface which are oppositely arranged, a plurality of backlight light sources are arranged on the first surface of the flexible circuit board, a plurality of ultraviolet light sources are arranged on the second surface of the flexible circuit board, the backlight light sources and the ultraviolet light sources are both arranged on the flexible circuit board, and the flexible circuit board not only bears the backlight light sources, but also bears the ultraviolet light sources. Bear different backlight source and ultraviolet source respectively through the first surface and the second surface of flexible circuit board, and with the flexible circuit board backfolding to display panel's upper surface, and the upper surface fixed connection that passes through colloid and display panel at the first end of flexible circuit board, need not to set up two flexible circuit boards for backlight source and ultraviolet source like this, save a flexible circuit board, backlight unit's thickness also can be saved simultaneously, avoid setting up a flexible circuit board alone for ultraviolet source and lead to additionally counterpointing attached, reduce backlight unit's assembly process's complexity. The ultraviolet light source is accommodated in the outer frame of the backlight module and positioned on the light-emitting surface of the display panel, so that the ultraviolet light of the ultraviolet light source can better kill bacteria on the light-emitting surface of the display panel and is safer to use.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art disinfection display apparatus 100;
FIG. 2 is a schematic diagram of a display device 200 according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another structure of a display device 200 according to an embodiment of the invention;
FIG. 4 is a schematic diagram of another structure of a display device 200 according to an embodiment of the invention;
FIG. 5 is a schematic diagram of the optical path of a display device 200 according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a display device 200 according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, 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 invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used herein to describe devices in accordance with embodiments of the present invention, these devices should not be limited by these terms. These terms are only used to distinguish one device from another. For example, a first device may also be referred to as a second device, and similarly, a second device may also be referred to as a first device, without departing from the scope of embodiments of the present invention.
The inventor of the application finds that: in the prior art, the ultraviolet lamp 120 is located outside the display device 110; the ultraviolet lamp 120 and the display device 110 are not integrated, and the ultraviolet lamp 120 and the display device 110 need to be carried separately, which is inconvenient to use; the ultraviolet lamp 120 and the display device 110 cannot be directly fixed relatively, and the ultraviolet lamp 120 and the display device 110 need to be fixed relatively through other devices besides the ultraviolet lamp and the display device, which is complex in structure; the ultraviolet lamp 120 itself has no protection device, and the ultraviolet light of the ultraviolet lamp 120 irradiates the display device 110 and the surrounding environment, which may damage the human body or the object.
In order to solve the above technical problem, an embodiment of the present invention provides a display device.
FIG. 2 is a schematic diagram of a display device 200 according to an embodiment of the present invention; fig. 3 is another schematic structural diagram of a display device 200 according to an embodiment of the invention.
As shown in fig. 2 and 3, the display device 200 includes a display panel 210 and a backlight module 220, the backlight module 220 is located under a surface perpendicular to the display panel 210, and the backlight module 220 includes: a flexible circuit board 221, the flexible circuit board 221 including a first surface 221A and a second surface 221B disposed opposite to each other; the backlight light sources 222 are arranged on the first surface 221A of the flexible circuit board 221, and are located in the orthographic projection of the display panel 210 on the flexible circuit board 221; the plurality of ultraviolet light sources 223 are arranged on the second surface 221B of the flexible circuit board 221 and located at the first end 221C of the edge of the flexible circuit board 221, the first end 221C of the flexible circuit board 221 is fixedly connected with the upper surface 210A of the display panel 210 through the glue 230, wherein the upper surface 210A of the display panel 210 is a surface away from the backlight module 220. It can be understood that the display panel in the embodiment of the present invention is a liquid crystal display panel, a cover glass is usually disposed on the light emitting surface of the liquid crystal display panel, and a touch operation is usually performed on the cover glass.
In the embodiment of the present invention, the flexible circuit board 221 includes a first surface 221A and a second surface 221B that are opposite to each other, the plurality of backlight sources 222 are arranged on the first surface 221A of the flexible circuit board 221, the plurality of ultraviolet sources 223 are arranged on the second surface 221B of the flexible circuit board 221, both the backlight sources 222 and the ultraviolet sources 223 are disposed on the flexible circuit board 221, and the flexible circuit board 221 carries both the backlight sources 222 and the ultraviolet sources 223. The first surface 221A and the second surface 221B of the flexible circuit board 221 respectively bear different backlight sources 222 and ultraviolet sources 223, the flexible circuit board 221 is folded back to the upper surface 210A of the display panel 210, and the first end 221C of the flexible circuit board 221 is fixedly connected with the upper surface 210A of the display panel 210 through the colloid 230, so that two flexible circuit boards 221 do not need to be arranged for the backlight sources 222 and the ultraviolet sources 223, one flexible circuit board 221 is saved, the thickness of the backlight module 220 can be saved, additional alignment attachment caused by the fact that one flexible circuit board 221 is arranged for the ultraviolet sources 223 independently is avoided, and the complexity of the assembly process of the backlight module 220 is reduced. The display device 200 and the ultraviolet light source 223 are of an integral structure, and the display device 200 and the ultraviolet light source 223 are carried together, so that the use is convenient; the ultraviolet light source 223 is fixed in the display device 200, which is simple in structure.
As shown in fig. 2 and 3, the display panel 210 further includes an array substrate 211 and a color filter substrate 212, which are disposed opposite to each other, the array substrate 211 includes a first edge region 211A that exceeds one side of the color filter substrate 212, the first edge region 211A can be used as a step region of the display panel 210, a peripheral routing circuit and a driving chip are usually disposed in the step region, and the first end portion 221C is fixed above the step region through a sealant 230, so as to position the ultraviolet light source 223 and prevent the position of the ultraviolet light source 223 from moving. In addition, in order to prevent conduction between the peripheral wiring circuits, the sealant 230 may be an insulating sealant, and in order to prevent heat generated by the operation of the ultraviolet light source from overflowing to cause thermal expansion to affect the light emitting effect of the display device, the sealant 230 may be a heat dissipating sealant.
In an embodiment of the present invention, the display panel 210 further includes an array substrate 211 and a color filter substrate 212 that are disposed opposite to each other, the array substrate 211 includes a first edge region 211A that exceeds one side of the color filter substrate 212, the color filter substrate 212 is not disposed on the first edge region 211A, a liquid crystal layer between the array substrate 211 and the color filter substrate 212 is not disposed on the first edge region 211A, and the first edge region 211A is a non-display region of the display panel 210. First edge zone 211A is display panel 210's step area, first end 221C is fixed in the step area through colloid 230, ultraviolet source 223 is located first end 221C, ultraviolet source 223 sets up on first edge zone 211A and does not set up on display panel 210's display area, ultraviolet source 223 does not shelter from display panel 210's image, ultraviolet source 223 does not occupy the region in display panel's display area promptly, and simultaneously, this ultraviolet source 223 sets up the case in display panel's step area, also need not to occupy display panel and backlight unit's side space, be favorable to realizing display device's narrow frame.
As shown in fig. 2, the backlight source 222 includes a first light emitting diode D1, the first light emitting diode D1 is rectangular parallelepiped, the first light emitting diode D1 includes a first bottom surface 222A and a first top surface 222B, the first bottom surface 222A and the first top surface 222B are disposed opposite to each other, the first bottom surface 222A contacts with the first surface 221A of the flexible circuit board 221, the first top surface 222B emits light, and the first top surface 222B is a side of the first light emitting diode D1 close to the display panel 210; the ultraviolet light source 223 includes a second light emitting diode D2, the second light emitting diode D2 is in a rectangular parallelepiped shape, the second light emitting diode D2 includes a second bottom surface 223A, a second top surface 223B, and a second side surface 223C, the second bottom surface 223A and the second top surface 223B are disposed opposite to each other, the second bottom surface 223A contacts the second surface 221B of the flexible circuit board 221, the second side surface 223C is located between the second bottom surface 223A and the second top surface 223B, the second side surface 223C emits light, and the second side surface 223C is a side close to the center of the display panel 210.
In the embodiment of the present invention, the backlight light source 222 includes the first light emitting diode D1, and the first light emitting diode D1 may emit visible rays; the first bottom surface 222A of the first led D1 contacts the first surface 221A of the flexible circuit board 221, the first bottom surface 222A of the first led D1 is fixed on the first surface 221A of the flexible circuit board 221, and the flexible circuit board 221 carries the first led D1; the first top surface 222B of the first light emitting diode D1 is close to the display panel 210 and emits light, the visible light of the first light emitting diode D1 illuminates the display panel 210, and the display panel 210 realizes display using the liquid crystal optical effect. The ultraviolet light source 223 includes a second light emitting diode D2, and the second light emitting diode D2 can emit ultraviolet light; the second bottom surface 223A of the second led D2 contacts the second surface 221B of the flexible circuit board 221, the second bottom surface 223A of the second led D2 is fixed on the second surface 221B of the flexible circuit board 221, and the flexible circuit board 221 carries the second led D2; the second side 223C of the second light emitting diode D2 is close to the center of the display panel 210 and emits light, the ultraviolet light of the second light emitting diode D2 irradiates the display region of the display panel 210, and the ultraviolet light of the second light emitting diode D2 kills bacteria on the display region of the display panel 210.
As shown in fig. 2, the second bottom surface 223A of the second light emitting diode D2 is higher than the plane of the display panel 210 in the direction Y perpendicular to the plane of the display panel 210.
In the embodiment of the present invention, in the direction Y perpendicular to the plane of the display panel 210, the second bottom surface 223A of the second light emitting diode D2 is higher than the plane of the display panel 210, the second bottom surface 223A of the second light emitting diode D2 is higher than the display area of the display panel 210, the second side surface 223C of the second light emitting diode D2 is located on the second bottom surface 223A of the second light emitting diode D2, the second side surface 223C of the second light emitting diode D2 is higher than the display area of the display panel 210, the second side surface 223C of the second light emitting diode D2 is close to the center of the display panel 210 and emits ultraviolet light, the ultraviolet light of the second light emitting diode D2 irradiates the display area of the display panel 210, and the ultraviolet light of the second light emitting diode D2 kills bacteria on the display area of the display panel 210.
As shown in fig. 2, in the direction X parallel to the plane of the display panel 210, a distance between the second side surface 223C of the second light emitting diode D2 and the color filter substrate 212 is greater than 0.3 mm and less than 0.5 mm.
In the embodiment of the invention, on the one hand, in the direction X parallel to the plane of the display panel 210, the distance between the second side surface 223C of the second light emitting diode D2 and the color filter substrate 212 is greater than 0.3 mm, the distance between the second light emitting diode D2 and the color filter substrate 212 is greater, a liquid crystal layer is disposed between the color filter substrate 212 and the array substrate 211, the distance between the second light emitting diode D2 and the liquid crystal layer is greater, the second light emitting diode D2 emits ultraviolet rays and generates heat, and the heat of the second light emitting diode D2 does not affect the liquid crystal layer. On the other hand, in the direction X parallel to the plane of the display panel 210, a distance between the second side surface 223C of the second light emitting diode D2 and the color filter substrate 212 is less than 0.5 mm, a distance between the second light emitting diode D2 and the color filter substrate 212 is smaller, the color filter substrate 212 covers the display area of the display panel 210, a distance between the second light emitting diode D2 and the display area of the display panel 210 is smaller, and ultraviolet rays of the second light emitting diode D2 can better kill bacteria on the display area of the display panel 210.
Fig. 4 is another schematic structural diagram of the display device 200 according to the embodiment of the invention.
As shown in fig. 4, the backlight module 220 further includes a frame 224, the frame 224 accommodates the display panel 210, the flexible circuit board 221, the backlight source 222, and the ultraviolet light source 223, and the second surface 221B of the flexible circuit board 221 is fixed to the frame 224 through the adhesive 230.
In the embodiment of the present invention, the frame 224 accommodates the display panel 210, the flexible circuit board 221, the backlight source 222, and the ultraviolet light source 223, and the frame 224 protects the display panel 210, the flexible circuit board 221, the backlight source 222, and the ultraviolet light source 223. The second surface 221B of the flexible circuit board 221 is fixed to the outer frame 224 through the adhesive 230, and the outer frame 224 carries the flexible circuit board 221, thereby carrying the plurality of backlight sources 222 arranged on the first surface 221A of the flexible circuit board 221 and the plurality of ultraviolet sources 223 arranged on the second surface 221B of the flexible circuit board 221.
As shown in fig. 4, the display panel 210 includes a display area AA, and the outer frame 224 exposes the display area AA of the display panel 210 and covers the ultraviolet light source 223.
In the embodiment of the invention, the display panel 210 includes the display area AA, the display panel 210 provides an image at the display area AA, the frame 224 exposes the display area AA of the display panel 210, the frame 224 does not block the image of the display panel 210, and the image of the display panel 210 is visible all the time. The frame 224 covers the ultraviolet light source 223, the frame 224 blocks ultraviolet light from the ultraviolet light source 223, and the ultraviolet light from the ultraviolet light source 223 cannot go from inside the frame 224 to outside the frame 224, so that the ultraviolet light from the ultraviolet light source 223 can not hurt human body or object outside the frame 224, and the display device 200 including the ultraviolet light source 223 can be safer to use due to the protection of the frame 224. By accommodating the uv light source 223 in the outer frame 224 of the backlight module 220 and on the light emitting surface of the display panel 210, the uv light of the uv light source 223 can not only better kill bacteria on the light emitting surface of the display panel 210, but also be safer to use.
As shown in fig. 4, the colloid 230 is a heat dissipating colloid.
In the embodiment of the present invention, the colloid 230 is a heat dissipating colloid, and the colloid 230 can dissipate heat. The backlight source 222 emits visible light and generates heat, the ultraviolet light source 223 emits ultraviolet light and generates heat, the backlight source 222 and the ultraviolet light source 223 are both arranged on the flexible circuit board 221, the first end 221C of the flexible circuit board 221 is fixed on the upper surface 210A of the display panel 210 through the glue 230, and the second surface 221B of the flexible circuit board 221 is fixed on the outer frame 224 through the glue 230; the heat of the backlight source 222 and the heat of the uv source 223 are conducted to the flexible circuit board 221 and then dissipated through the gel 230.
Fig. 5 is a schematic diagram of the optical path of the display device 200 according to the embodiment of the present invention.
As shown in fig. 5, the ultraviolet light source 223 emits light at a wavelength greater than 200 nm and less than 275 nm.
In the present embodiment, the ultraviolet light source 223 has a light emission wavelength of more than 200 nm and less than 275 nm, and such ultraviolet light kills bacteria; optionally, the ultraviolet light source 223 has an emission wavelength of greater than 250 nanometers and less than 270 nanometers, such ultraviolet light being better at killing bacteria. Specifically, the outer frame 224 exposes the display area AA of the display panel 210, and bacteria outside the outer frame 224 contact the display area AA of the display panel 210; ultraviolet light of the ultraviolet light source 223 irradiates the display area AA of the display panel 210, and the ultraviolet light of the ultraviolet light source 223 kills bacteria on the display area AA of the display panel 210.
As shown in FIG. 5, the ultraviolet light source 223 has a luminous intensity of more than 70 μ W/cm2。
In an embodiment of the present invention, the UV light source 223 has a luminous intensity of greater than 70 μ W/cm2Such ultraviolet light kills bacteria; optionally, the ultraviolet light source 223 has a luminous intensity greater than 90 μ W/cm2Such ultraviolet light is better at killing bacteria. Specifically, the outer frame 224 exposes the display area AA of the display panel 210, and bacteria outside the outer frame 224 contact the display area AA of the display panel 210; purple pigmentThe ultraviolet light of the external light source 223 irradiates the display area AA of the display panel 210, and the ultraviolet light of the ultraviolet light source 223 kills bacteria on the display area AA of the display panel 210.
Fig. 6 is a circuit diagram of a display device 200 according to an embodiment of the invention.
As shown in fig. 6, the flexible circuit board 221 includes a first line L1 and a second line L2 that are independently turned on and off, the backlight source 222 is electrically connected to the first line L1, and the ultraviolet source 223 is electrically connected to the second line L2.
In the embodiment of the present invention, at the flexible circuit board 221, the first line L1 and the second line L2 are independently turned on and off, the backlight source 222 is electrically connected to the first line L1, and the ultraviolet source 223 is electrically connected to the second line L2; the first line L1 transmits a lighting voltage to the backlight light source 222 and the second line L2 transmits an extinction voltage to the ultraviolet light source 223, or the first line L1 transmits an extinction voltage to the backlight light source 222 and the second line L2 transmits a lighting voltage to the ultraviolet light source 223, or the first line L1 transmits an extinction voltage to the backlight light source 222 and the second line L2 transmits an extinction voltage to the ultraviolet light source 223, or the first line L1 transmits a lighting voltage to the backlight light source 222 and the second line L2 transmits a lighting voltage to the ultraviolet light source 223; the voltage of the backlight light source 222 and the voltage of the uv light source 223 are independent, respectively.
As shown in fig. 6, the display device 200 further includes a control chip 240, and the control chip 240 is electrically connected to the first line L1 and the second line L2 respectively for individually controlling the backlight light source 222 to be turned on or controlling the ultraviolet light source 223 to be turned on.
In the embodiment of the present invention, in the display device 200, the control chip 240 is electrically connected to the first line L1 and the second line L2, respectively, for individually controlling the backlight light source 222 to be turned on or controlling the ultraviolet light source 223 to be turned on; the control chip 240 controls the backlight light source 222 to be turned on through the first line L1 and controls the ultraviolet light source 223 to be turned off through the second line L2, or the control chip 240 controls the backlight light source 222 to be turned off through the first line L1 and controls the ultraviolet light source 223 to be turned on through the second line L2, or the control chip 240 controls the backlight light source 222 to be turned off through the first line L1 and controls the ultraviolet light source 223 to be turned off through the second line L2, or the control chip 240 controls the backlight light source 222 to be turned on through the first line L1 and controls the ultraviolet light source 223 to be turned on through the second line L2; the bright and dark states of the backlight light source 222 and the ultraviolet light source 223 are independent of each other.
In summary, the present invention provides a display device. A display device comprises a display panel and a backlight module, wherein the backlight module comprises: the flexible circuit board comprises a first surface and a second surface which are oppositely arranged; the backlight light sources are arranged on the first surface of the flexible circuit board and positioned in the orthographic projection of the display panel on the flexible circuit board; the flexible circuit board comprises a flexible circuit board, a plurality of ultraviolet light sources, a plurality of glue bodies and a plurality of ultraviolet light sources, wherein the plurality of ultraviolet light sources are arranged on the second surface of the flexible circuit board and are located at the first end part of the edge of the flexible circuit board, the first end part of the flexible circuit board is fixedly connected with the upper surface of the display panel through the glue bodies, and the upper surface of the display panel is the surface far away from one side of the backlight module. In the invention, the ultraviolet light source is accommodated in the outer frame of the backlight module and positioned on the light-emitting surface of the display panel, so that the ultraviolet light of the ultraviolet light source can better kill bacteria on the light-emitting surface of the display panel and is safer to use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. A display device, characterized in that, display device includes display panel and backlight unit, backlight unit includes:
a flexible circuit board including a first surface and a second surface disposed opposite to each other;
the backlight light sources are arranged on the first surface of the flexible circuit board, face the back side of the light emitting surface of the display panel and are positioned in the orthographic projection of the display panel on the flexible circuit board;
the ultraviolet light sources are arranged on the second surface of the flexible circuit board and located at the first end part of the edge of the flexible circuit board, the first end part of the flexible circuit board is folded back to the upper surface of the display panel and is fixedly connected with the upper surface of the display panel through glue, and the upper surface of the display panel is the surface far away from one side of the backlight light source;
the display panel further comprises an array substrate and a color film substrate which are arranged oppositely, the array substrate comprises a first edge area which exceeds one side of the color film substrate, the first edge area is a step area of the display panel, and the first end part is fixed in the step area through a colloid;
the ultraviolet light sources are arranged at the first end part of the edge of the flexible circuit board and arranged on the second surface of the flexible circuit board and are positioned on one side of the light emitting surface of the display panel, and the ultraviolet light sources are used for disinfecting and sterilizing the light emitting surface of the display panel.
2. The display device according to claim 1, wherein the backlight light source comprises a first light emitting diode, the first light emitting diode is rectangular, the first light emitting diode comprises a first bottom surface and a first top surface, the first bottom surface and the first top surface are oppositely arranged, the first bottom surface is in contact with the first surface of the flexible circuit board, the first top surface emits light, and the first top surface is a side of the first light emitting diode close to the display panel;
the ultraviolet light source comprises a second light emitting diode, the second light emitting diode is cuboid, the second light emitting diode comprises a second bottom surface, a second top surface and a second side surface, the second bottom surface and the second top surface are oppositely arranged, the second bottom surface is in contact with the second surface of the flexible circuit board, the second side surface is located between the second bottom surface and the second top surface, the second side surface emits light, and the second side surface is close to one side of the center of the display panel.
3. The display device according to claim 2, wherein the second bottom surface of the second light emitting diode is higher than the plane of the display panel in a direction perpendicular to the plane of the display panel.
4. The display device according to claim 2, wherein a distance between the second side surface of the second light emitting diode and the color filter substrate is greater than 0.3 mm and less than 0.5 mm in a direction parallel to a plane of the display panel.
5. The display device according to claim 1, wherein the backlight module further comprises an outer frame, the outer frame accommodates the display panel, the flexible circuit board, the backlight source, and the ultraviolet light source, and the second surface of the flexible circuit board is fixed to the outer frame by a glue.
6. The display device according to claim 5, wherein the display panel includes a display area, and the outer frame exposes the display area of the display panel and covers the ultraviolet light source.
7. A display device as claimed in any one of claims 1 to 6, characterised in that the gel is a heat-dissipating gel.
8. The display device according to claim 1, wherein the ultraviolet light source has a light emission wavelength of more than 200 nm and less than 275 nm.
9. The display device according to claim 1, wherein the ultraviolet light source has a luminous intensity of more than 70 μ W/cm2。
10. The display device according to claim 1, wherein the flexible circuit board includes a first wiring and a second wiring which are independently turned on and off, the backlight light source is electrically connected to the first wiring, and the ultraviolet light source is electrically connected to the second wiring.
11. The display device according to claim 10, further comprising a control chip electrically connected to the first line and the second line, respectively, for individually controlling the backlight light source to be turned on or controlling the ultraviolet light source to be turned on.
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| CN201910413742.XA CN110045545B (en) | 2019-05-17 | 2019-05-17 | Display device |
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| CN201910413742.XA CN110045545B (en) | 2019-05-17 | 2019-05-17 | Display device |
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| CN110045545B true CN110045545B (en) | 2022-04-29 |
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| CN111897162B (en) * | 2020-08-18 | 2022-06-14 | 厦门天马微电子有限公司 | Light source assembly, backlight module and display device |
| WO2022179960A1 (en) * | 2021-02-25 | 2022-09-01 | Signify Holding B.V. | A device capable of emitting visible light and ultraviolet radiation |
| CN116360156A (en) * | 2023-03-23 | 2023-06-30 | 惠科股份有限公司 | Display device and electronic apparatus |
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