CN110488540B - Display device - Google Patents
Display device Download PDFInfo
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- CN110488540B CN110488540B CN201910817799.6A CN201910817799A CN110488540B CN 110488540 B CN110488540 B CN 110488540B CN 201910817799 A CN201910817799 A CN 201910817799A CN 110488540 B CN110488540 B CN 110488540B
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- Prior art keywords
- light source
- display device
- guide plate
- ultraviolet light
- light guide
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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—Ultra-violet radiation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
Abstract
The invention discloses a display device, which aims to solve the problems of high cost and inconvenient operation in the process of disinfecting the outer surface of the display device in the prior art. The display device includes: a display panel; the front light structure, the front light structure is located display panel goes out the plain noodles, the front light structure includes: the display panel comprises a light guide plate, an ultraviolet light source and a plurality of first screen points, wherein the ultraviolet light source is positioned on the side surface of the light guide plate; the ultraviolet light source and the display panel are arranged in a stacked mode.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
Flat panel displays (F1 at panel 1 Disp1ay, FPD) have become the mainstream products in the market, and the types of flat panel displays are increasing, such as Liquid Crystal Displays (LCD), organic Light Emitting Diodes (OLED) displays, plasma Display panels (P1 asma Disp1ay panel 1, PDP), and Field Emission Displays (FED).
Display devices in the prior art, such as those installed in public places, are often in contact with different objects, and therefore, the outer surface of the display device needs to be disinfected at intervals, so that when the outer surface of the display device is contaminated with harmful substances such as bacteria or viruses, people are in contact with the display device again, and the risk of being easily infected exists.
However, in the prior art, when the outer surface of the display device is disinfected, the display device is generally disinfected by the external disinfection device, so that the problems that the operation is complicated, the disinfection cannot be carried out at any time according to needs, the operation is inconvenient, and the disinfection cost is high when the external disinfection device is needed exist.
Disclosure of Invention
The invention provides a display device, which aims to solve the problems that in the prior art, when the outer surface of the display device is disinfected, the operation is complicated, the disinfection cannot be carried out at any time according to needs, the operation is inconvenient, and when an external disinfection device is needed, the disinfection cost is high.
An embodiment of the present invention provides a display device, including:
a display panel;
the front light source structure is located the display panel goes out the plain noodles, the front light source structure includes: the display panel comprises a light guide plate, an ultraviolet light source and a plurality of first screen points, wherein the ultraviolet light source is positioned on the side surface of the light guide plate;
the ultraviolet light source and the display panel are arranged in a stacked mode.
The embodiment of the invention has the following beneficial effects:
the display device provided by the embodiment of the invention comprises: a display panel; the front light source structure is located the display panel goes out the plain noodles, the front light source structure includes: the display panel comprises a light guide plate, an ultraviolet light source and a plurality of first screen points, wherein the ultraviolet light source is positioned on the side surface of the light guide plate; the ultraviolet light source and the display panel are arranged in a stacked mode, and further, when the outer surface of the display device needs to be disinfected, the ultraviolet light source can be controlled to be turned on, light emitted by the ultraviolet light source enters the light guide plate and is emitted to the surface, away from the display panel, of the light guide plate under the guiding action of the first mesh points, facing the surface of the display panel, of the light guide plate, ultraviolet disinfection on the outer surface of the display device can be achieved through the ultraviolet light, and compared with the prior art that an external disinfection device is usually needed when the outer surface of the display device is disinfected in the prior art, the disinfection device provided by the embodiment of the invention can disinfect the outer display surface of the display device through the ultraviolet light source and the first mesh points arranged on the display device, and is simple in operation, easy to achieve, capable of disinfecting according to needs at any time, and convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display device provided with a second light source according to an embodiment of the present invention;
fig. 3 is a schematic distribution diagram of a second grid according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structural diagram of a display device in which a first light source and a second light source are arranged in layers according to an embodiment of the present invention;
fig. 5 is a schematic top view of a display device with layered arrangement of a first light source and a second light source according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional structural diagram of a display device provided with a flexible circuit board according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional structure view of a display device provided with a heat conducting sheet arrangement when a first light source and a second light source are distributed on the same layer according to an embodiment of the present invention;
fig. 8 is a schematic top view of a display device provided with heat conducting strips when the first light source and the second light source are distributed on the same layer according to an embodiment of the present invention;
fig. 9 is a schematic cross-sectional structural view of a display device provided with a heat conducting sheet when a first light source and a second light source are layered and distributed according to an embodiment of the present invention;
fig. 10 is a schematic top view of a display device with a heat conducting sheet disposed when a first light source and a second light source are layered according to an embodiment of the invention;
FIG. 11 is a schematic structural diagram of a transmissive liquid crystal display device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of an OLED display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.
Referring to fig. 1, an embodiment of the present invention provides a display device, including:
the display panel 1;
the front light source structure 2, where the front light source structure 2 is located on a light emitting surface OF the display panel 1 (for example, as shown in fig. 1, an OF direction OF the display panel 1 is along the OF direction in fig. 1, a surface OF the display panel 1 opposite to the OF direction is taken as the light emitting surface, and a surface opposite to the OF direction is taken as the backlight surface), and the front light source structure 2 includes: a light guide plate 20, an ultraviolet light source 21 positioned at a side of the light guide plate 20, and a plurality of first dots 23 positioned at a side of the light guide plate 20 facing the display panel 2;
the ultraviolet light source 21 is stacked on the display panel 2.
The display device provided by the embodiment of the invention comprises: a display panel 1; leading light structure 2, leading light structure 2 is located 1 plain noodles of display panel, and leading light structure 2 includes: a light guide plate 20, an ultraviolet light source 21 located at a side of the light guide plate 20, and a plurality of first dots 23 located at a side of the light guide plate 20 facing the display panel 1; the ultraviolet light source 21 and the display panel 1 are stacked, and further, when the outer surface of the display device needs to be disinfected, the ultraviolet light source 21 can be controlled to be turned on, light emitted from the ultraviolet light source 21 enters the light guide plate 20, as shown by a dotted line of the light guide plate in fig. 1, and is emitted to the surface, away from the display panel, of the light guide plate 20 through the guiding effect of the first dots 23, facing one surface of the display panel 1, of the light guide plate 20, as shown by arrows in fig. 1, ultraviolet disinfection of the outer surface of the display device through ultraviolet light can be achieved, compared with the prior art that disinfection of the outer surface of the display device is conducted, an external disinfection device is usually needed.
It should be noted that the light guide plate 20 may specifically include a first surface 201 and a second surface 202 opposite to each other, for example, a surface of the light guide plate 20 facing the display panel 1 may be the first surface 201, a surface facing away from the display panel 1 may be the second surface 202, a connection surface connecting the first surface 201 and the second surface 202 may be a side surface 203 of the light guide plate 20, if the light guide plate 20 is a rectangular parallelepiped, the light guide plate 20 may specifically include four side surfaces 203, and the ultraviolet light source 21 in the embodiment of the present invention may be specifically disposed on one of the four side surfaces 203 of the light guide plate 20, for example, as shown in fig. 1, the ultraviolet light source 21 is disposed on a left side surface of the light guide plate 20.
In a specific implementation, the display device according to the embodiment of the present invention may be a total reflection display device or a semi-reflection display device. Referring to fig. 2, the front light structure 2 further includes: a white light source 22 located at the side of the light guide plate 20, and a plurality of second dots 24 located at a side of the light guide plate 20 away from the display panel 1. In the embodiment of the present invention, the front light source structure 2 further includes a white light source 22 and a plurality of second dots 24 located on a side of the light guide plate 20 away from the display panel 1, when the external ambient light is dark, the white light source 22 is turned on, and the light emitted from the white light source 22 enters the light guide plate 20, as shown by a dotted line in the light guide plate of fig. 2, and is emitted to the side of the light guide plate 20 away from the display panel 1 through the guiding effect of the plurality of first dots 23 of the light guide plate 20 facing the side of the display panel 1, as shown by an arrow in fig. 2, the external light can be provided for the all-trans or semi-trans display device, so that the all-trans or semi-trans display device can still perform normal display when the external ambient light is dark, and the light guide plate 20 that performs the disinfection function of reusing the light guide plate that provides the external light can achieve the normal display function, and at the same time the structure of the all-trans or semi-trans display device can achieve the ultraviolet disinfection function by performing a minor improvement on the structure of the display device, so that the display device can achieve the ultraviolet disinfection function.
In particular, for a semi-reflective display device, which is usually a liquid crystal display device, having a reflective region and a transmissive region, in the prior art, in order to match the optical path problem, in the same sub-pixel, the cell thickness of the reflective region is half of that of the transmissive region, and a plurality of protrusions are provided in the reflective region to improve the reflection efficiency; however, the transflective liquid crystal display device in the prior art usually suffers from the defect of rainbow patterns, and the display device provided by the embodiment of the invention can reduce the rainbow patterns and improve the display effect because the light guide plate 20 is arranged on the light emitting side of the display panel 1 and the mesh points 23/24 are arranged on the light guide plate 20.
In practical implementation, the orthographic projection of the first dots 23 on the light guide plate 20 and the orthographic projection of the second dots 24 on the light guide plate 20 are offset from each other. In the embodiment of the present invention, since the wavelengths of the light emitted from the ultraviolet light source 21 and the white light source 22 are different, the incident angles required for the light with different wavelengths to be totally reflected on the light guide plate 20 are different, and the optimal positions for emitting the light by setting the dots are different, the orthographic projection of the first dots 23 on the light guide plate 20 and the orthographic projection of the second dots 24 on the light guide plate 20 are arranged to be offset from each other, so that the light with different wavelengths can be emitted at the optimal positions, so as to increase the light emitting amount of the light guide plate 20 to the ultraviolet light or the white light.
In a specific implementation, referring to fig. 3, the plurality of second dots 24 are distributed in a dot pattern; the plurality of first dots 23 are distributed in a dot pattern (on the lower surface of the light guide plate 20, not shown), and the dot pattern distribution is specifically understood to mean that the plurality of dots are distributed at intervals to form a plurality of rows and a plurality of columns. In the embodiment of the present invention, the plurality of second dots 24 are distributed in a dot pattern, so that the white light incident into the light guide plate 20 is emitted at different positions on the surface of the light guide plate 20 facing the display panel 1, and the white light incident into the light guide plate 20 is emitted in a form similar to a surface light source; similarly, the plurality of first dots are distributed in a dot pattern, so that the light incident into the light guide plate 20 can be emitted at different positions on the side of the light guide plate 20 away from the display panel 1, and the ultraviolet light incident into the light guide plate 20 is emitted in a form similar to a surface light source.
In practical implementation, referring to fig. 3 or fig. 5, the distribution density of the second dots 24 gradually increases from the direction in which the end of the light guide plate 20 where the white light source 22 is arranged is directed to the opposite end of the light guide plate 20 (e.g., from the left side of the light guide plate 20 of fig. 3 to the right side of the light guide plate 20); the distribution density of the first dots 23 gradually increases from the direction in which the end of the light guide plate 20 where the ultraviolet light source 21 is disposed is directed toward the opposite end of the light guide plate 20 (e.g., from the left side of the light guide plate 20 to the right side of the light guide plate 20 in fig. 3). In the embodiment of the present invention, the end of the light guide plate 20, at which the ultraviolet light source 21 is disposed, is directed to the opposite end of the light guide plate 20, the distribution density of the first mesh points 23 is gradually increased, and since the farther the distance from the ultraviolet light source 21 is, the lower the brightness of the ultraviolet light is, by disposing the first mesh points 23 with greater density at the position of the light guide plate 20, which is farther from the ultraviolet light source 21, the amount of the ultraviolet light emitted at the position farther from the ultraviolet light source 21 can be increased, so that the emitted light brightness at each position of the light guide plate 20 is substantially the same, thereby achieving uniform disinfection of each position of the outer surface of the display panel; similarly, the end of the light guide plate 20 where the white light source 22 is disposed is directed to the opposite end of the light guide plate 20, the distribution density of the second dots 24 is gradually increased, and since the farther the distance from the white light source 22 is, the lower the brightness of the white light is, by disposing the second dots 24 with greater density at the position of the light guide plate 20 farther from the white light source 22, the amount of the white light emitted from the position farther from the white light source 22 can be increased, and further, the light emitting brightness at each position of the light guide plate 20 is substantially the same, so that the light guide plate 20 emits the white light with uniform brightness to the display panel 1.
In a specific implementation, the first dots 23 and the second dots 24 may be recessed dots or raised dots formed on the surface of the light guide plate 20.
In a specific implementation, the ultraviolet light source 21 is an ultraviolet light emitting diode, the white light source 22 is a white light emitting diode, and the front light source structure 2 includes a plurality of ultraviolet light sources 21 and a plurality of white light sources 22. In the embodiment of the invention, the ultraviolet light source and the white light source are both light emitting diodes, and the light emitting diodes have small volume and flexible placement position, so that the lightness of the structure of the front light source can be realized compared with a lamp tube type light source.
In particular implementations, the white light source 22 is located on the same side of the light guide plate 20 as the ultraviolet light source 21. In the embodiment of the invention, the white light source 22 and the ultraviolet light source 21 are positioned on the same side of the light guide plate, and the light emission of the ultraviolet light source 21 and the white light source 22 can be controlled through one flexible circuit board, so that the control is convenient, the structure of the display device is simplified, and the cost is saved.
In specific implementation, referring to fig. 3 and 4, the white light sources 22 and the ultraviolet light sources 21 are distributed in two layers in the thickness direction of the light guide plate 20 (i.e., in the direction in which the lower surface of the light guide plate is directed to the upper surface as in fig. 4), and the white light sources 22 are located on the side of the ultraviolet light sources 21 close to the display panel 1, that is, for example, as shown in fig. 4, the white light sources 22 are located on the lower layer and the ultraviolet light sources 21 are located on the upper layer. In the embodiment of the present invention, the white light source 22 is located on one side of the ultraviolet light source 21 close to the display panel 1, that is, the white light source 22 is closer to the display panel 1, and the ultraviolet light source 21 is closer to the outer surface of the display device, which is beneficial to emitting white light with stronger brightness to the display panel and emitting ultraviolet light with stronger brightness to the outer surface of the display device.
In practical implementation, as shown in fig. 2 and fig. 5, the white light sources 22 and the ultraviolet light sources 21 are located on the same layer, and the white light sources 22 and the ultraviolet light sources 21 are sequentially and alternately arranged, that is, as shown in fig. 5, the white light sources 22 and the ultraviolet light sources 21 are sequentially and alternately arranged in an extending direction (as shown by an arrow AB in fig. 5) along a side frame of the light guide plate 20 where the ultraviolet light sources 21 and the white light sources 22 are located. Compared with the case where the white light sources 22 and the ultraviolet light sources 21 are disposed on one half of the side frame of the light guide plate 20, in the embodiment of the present invention, the white light sources 22 and the ultraviolet light sources 21 are disposed on the same layer, and the white light sources 22 and the ultraviolet light sources 21 are alternately arranged in sequence, so that the white light emitted from each position of the light guide plate 20 in the longitudinal direction, i.e., along the extending direction (as shown by arrow AB) of the side frame on which the ultraviolet light sources 21 and the white light sources 22 are disposed, has uniform brightness, and the ultraviolet light has uniform brightness.
In specific implementation, referring to fig. 6, the display panel 1 includes an array substrate 11 and a counter substrate 12 that are oppositely disposed, the array substrate 11 includes a first region S1 overlapping with the counter substrate 12, and a second region S2 beyond the counter substrate 12, and an orthographic projection of the ultraviolet light source 21 and the white light source 22 on the array substrate 11 is located in the second region S1.
In specific implementation, referring to fig. 6, the display device further includes a flexible circuit board 3, and the ultraviolet light source 21 and the white light source 22 are fixed to the flexible circuit board 3. In the embodiment of the present invention, the ultraviolet light source 21 and the white light source 22 are fixed on the same flexible circuit board 3, so that the structure of the display device can be simplified.
In specific implementation, referring to fig. 6, the second region S2 of the array substrate 11 is provided with a control IC 4; the flexible circuit board 3 is located on a side of the control IC 4 away from the array substrate 11, and a heat conduction sheet 5 is provided on a surface of the flexible circuit board 3 facing the control IC 4 in a region corresponding to the control IC 4. In the embodiment of the present invention, the heat conducting sheet 5 is disposed in the area corresponding to the control IC 4 on the side of the flexible circuit board 3 facing the control IC 4, so as to avoid a problem that in the embodiment of the present invention, when the ultraviolet light source 21 is disposed, if the ultraviolet light source 21 cannot dissipate heat in time when the ultraviolet light source 21 is disposed in a short distance from the control IC 4, the service life of the control IC 4 may be reduced. Specifically, the flexible circuit board 3 is used to control the light emission of the white light source 22 and the ultraviolet light source 21, and in addition, the display panel 1 may further be provided with a driving flexible circuit board 31 in the second area S2 of the array substrate 11, where the driving flexible circuit board 31 is used to drive the circuit of the array substrate 11.
In practical implementation, the distribution of the ultraviolet light sources 21 and the white light sources 22 are different, the shape of the flexible circuit board 3 may also be different, and the fixing manner of the flexible circuit board 3 and other structures of the display device may also be different, which is described below by specific examples.
For example, when the white light source 22 and the ultraviolet light source 21 are located on the same layer, referring to fig. 7 and 8, the flexible circuit board 3 may be specifically a flat structure, and both the white light source 22 and the ultraviolet light source 21 may be located on a side of the flexible circuit board 3 away from the array substrate 11. Specifically, the surface of the flexible circuit board 3 facing away from the white light source 22 may be attached to the opposite substrate 12 through the double-sided tape 60, and then the portion of the flexible circuit board 3 where the ultraviolet light source 21 and the white light source 22 are disposed may be fixed to the opposite substrate 12, so as to avoid the influence on the light incident effect when the positions of the ultraviolet light source 21 and/or the white light source 22 are not fixed. Further, the flexible circuit board 3 is attached to the heat conducting fin 5 through the first double-sided heat conducting adhesive tape 61, and the heat conducting fin 5 is attached to the control IC 4 through the second double-sided heat conducting adhesive tape 62, so that the heat conducting fin 5 and the flexible circuit board 3 are fixed, and the heat conducting fin 5 and the control IC 4 are fixed. The second area S2 of the array substrate 11 may be further covered with a protective adhesive 7 to protect the control IC 4 of the second area S2.
For another example, referring to fig. 9 and 10, when the white light source 22 and the ultraviolet light source 21 are distributed in two layers, the flexible circuit board 3 may be bent, that is, may specifically include: the extending portion 31 and the bending portion 32 connected to the extending portion 31, an extending direction of the bending portion 32 is perpendicular to an extending direction of the extending portion 31, the ultraviolet light source 21 and the white light source 22 are fixed to the bending portion 32, the extending direction of the bending portion 32 may be a direction pointing to the light guide plate 20 from the array substrate 11, the ultraviolet light source 21 and the white light source 22 are disposed on a surface of the bending portion 32 facing the light guide plate 20, and the ultraviolet light source 21 and the white light source 22 are disposed on a side surface of the light guide plate 20. Specifically, the light emitting surface of the white light source 22 and the light emitting surface of the ultraviolet light source 21 are both bonded to the light guide plate 20, the ultraviolet light source 21 and the white light source 22 are fixed to the light guide plate 20 through the adhesive 8 filled in the gap between the adjacent light sources, the adhesive 8 may be filled in the gap between the adjacent white light sources 22, or may be filled in the gap between the adjacent ultraviolet light sources 21, or may be filled in the gap between the adjacent white light sources 22 and the ultraviolet light source 21, that is, when the ultraviolet light source 21 and the white light source 22 are located on the side surface of the light guide plate 20 in two layers, since the flexible circuit board 3 is generally flexible, it is difficult to directly make the light sources arranged in layers stand on the side surface of the light guide plate 20, therefore, the ultraviolet light source 21 and the white light source 22 may be fixed to the side surface of the light guide plate 20 by means of dispensing between the light sources and the light guide plate 20, and further, in order to avoid the adhesive 8 from affecting the light incident light effects of the ultraviolet light source 21 and the light source 20, the light source 21 may be bonded to the light guide plate 20, and then the light source 20 may be located in the space where the white light source 22 is located, or the light source 20 is located. Further, the extension portion 21 of the flexible circuit board 3 is attached to the heat conducting strip 5 through a third double-sided heat conducting adhesive tape 63, and the heat conducting strip 5 is attached to the control IC 4 through a fourth double-sided heat conducting adhesive tape 64, so that the heat conducting strip 5 and the flexible circuit board 3 are fixed, and the heat conducting strip 5 and the control IC 4 are fixed.
In practical applications, the heat conducting sheet 5 may be made of graphite. In the embodiment of the invention, the heat conducting sheet 5 is made of graphite, and the graphite has a good heat conducting effect, so that heat emitted by the light source can be timely conducted out.
In practical implementation, as shown in fig. 7 and 9, the display device further includes a frame support 9, and the display panel 1 is located in the frame support 9. The frame support 9 may be made of plastic, such as a plastic frame, or may be made of metal.
In specific implementation, as shown in fig. 7 and 9, the display panel includes a first polarizer 13 located on a side of the array substrate 11 away from the opposite substrate 12, and a second polarizer 14 located on a side of the opposite substrate 12 away from the array substrate 11.
In a specific implementation, the material of the light guide plate 20 may be quartz. In the embodiment of the present invention, the light guide plate 20 is made of quartz, so that the problem that the light guide plate 20 is yellow due to long-term irradiation of ultraviolet light when a resin light guide plate is used, which affects normal display of the display device, can be avoided.
In practical implementation, the display device in the embodiment of the present invention may further include a protective cover plate on a side of the light guide plate 20 facing away from the display panel 1.
In a specific implementation, the display device may also be a transmissive liquid crystal display device, as shown in fig. 11, which is different from the all-reflective or semi-reflective display device provided in the present invention in that the transmissive liquid crystal display device further includes a backlight module 15, and the backlight module 15 may specifically provide backlight for the transmissive liquid crystal display device. Compared with the traditional transmission type liquid crystal display device, the transmission type liquid crystal display device provided by the embodiment of the invention is provided with the front light source structure 2, so that the transmission type liquid crystal display device not only has a normal display function, but also can carry out ultraviolet disinfection on the outer surface of the display device.
In a specific implementation, the display device may also be an OLED display device, as shown in fig. 12, the difference from the all-trans or semi-trans display device provided in the present invention is that the front light source structure 2 of the OLED display device may only be provided with an ultraviolet light source 21, and does not need to be provided with a white light source 22, the light guide plate 20 may only be provided with a first dot 23 on a surface facing the display panel 1, and does not need to be provided with a second dot 24, and meanwhile, the OLED display device also does not need to be provided with a first polarizer 13. Compared with the traditional OLED display device, the OLED display device provided by the embodiment of the invention is provided with the front light source structure 2, so that the OLED display device not only has a normal display function, but also can carry out ultraviolet disinfection on the outer surface of the OLED display device. In this case, the OLED display device includes an array substrate 11, a counter substrate 12, and a polarizer 14, wherein the polarizer 14 is used to prevent reflection. In other embodiments of the present invention, the OLED display device may not include the opposite substrate 12, and only the encapsulation layer is required to encapsulate the structure on the array substrate 11.
The embodiment of the invention has the following beneficial effects: the display device provided by the embodiment of the invention comprises: a display panel; leading light structure, leading light structure is located display panel and goes out the plain noodles, and leading light structure includes: the display panel comprises a light guide plate, an ultraviolet light source and a plurality of first screen points, wherein the ultraviolet light source is positioned on the side surface of the light guide plate; the ultraviolet light source and the display panel are arranged in a stacked mode, and then when the outer surface of the display device needs to be disinfected, the ultraviolet light source can be controlled to be turned on, light emitted by the ultraviolet light source enters the light guide plate and is emitted to one surface, away from the display panel, of the light guide plate under the guiding effect of the first mesh points, facing one surface of the display panel, of the light guide plate, ultraviolet disinfection can be achieved on the outer surface of the display device through ultraviolet light, compared with the prior art, when the outer surface of the display device is disinfected in the prior art, an external disinfection device is usually needed.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (21)
1. A display device, comprising:
a display panel;
the front light structure, the front light structure is located display panel goes out the plain noodles, the front light structure includes: the display panel comprises a light guide plate, an ultraviolet light source, a white light source, a plurality of first screen points and a plurality of second screen points, wherein the ultraviolet light source is positioned on the side surface of the light guide plate; the orthographic projection of the first screen dots on the light guide plate and the orthographic projection of the second screen dots on the light guide plate are staggered;
the ultraviolet light source and the display panel are arranged in a stacked mode.
2. The display device according to claim 1, wherein a plurality of the first dots are distributed in a dot pattern; the second mesh points are distributed in a mesh point mode.
3. The display device according to claim 2, wherein the distribution density of the first mesh points is gradually increased in a direction from an end of the light guide plate where the ultraviolet light source is disposed toward an opposite end of the light guide plate; the distribution density of the second mesh points is gradually increased from one end of the light guide plate, where the white light source is arranged, to the opposite end of the light guide plate.
4. The display device of claim 1, wherein the ultraviolet light source is an ultraviolet light emitting diode, the white light source is a white light emitting diode, and the front light structure comprises a plurality of the ultraviolet light sources and a plurality of the white light sources.
5. The display apparatus of claim 4, wherein the white light source is located on the same side of the light guide plate as the ultraviolet light source.
6. The display device according to claim 5, wherein the white light source and the ultraviolet light source are distributed in two layers in a thickness direction of the light guide plate, and the white light source is located on a side of the ultraviolet light source close to the display panel.
7. The display device of claim 5, wherein the white light source and the ultraviolet light source are located in the same layer, and the white light source and the ultraviolet light source are alternately arranged in sequence.
8. The display device according to claim 6 or 7, wherein the display panel includes an array substrate and a counter substrate which are oppositely disposed, the array substrate includes a first region overlapping with the counter substrate, and a second region beyond the counter substrate, and an orthographic projection of the ultraviolet light source and the white light source on the array substrate is located in the second region.
9. The display device according to claim 8, further comprising a flexible circuit board on a side of the array substrate facing the light guide plate, wherein an overlapping region exists between an orthographic projection of the flexible circuit board on the array substrate and the second region; the ultraviolet light source and the white light source are fixed on the flexible circuit board.
10. The display device according to claim 9, wherein the second region of the array substrate is provided with a control IC;
the flexible circuit board is located on one side, far away from the array substrate, of the control IC, and a heat conduction sheet is arranged on one surface, facing the control IC, of the flexible circuit board in an area corresponding to the control IC.
11. The display device of claim 10, wherein the white light source and the ultraviolet light source are located on a side of the flexible circuit board facing away from the array substrate when the white light source and the ultraviolet light source are located on the same layer.
12. The display device according to claim 11, wherein a side of the flexible circuit board facing away from the white light source is attached by a double-sided adhesive tape in a region opposite to the counter substrate.
13. The display device according to claim 12, wherein the flexible circuit board and the heat conductive sheet are bonded with a first double-sided heat conductive tape, and the heat conductive sheet and the control IC are bonded with a second double-sided heat conductive tape.
14. The display device of claim 10, wherein when the white light source and the ultraviolet light source are distributed in two layers, the flexible circuit board comprises: the ultraviolet light source and the white light source are fixed on the bending part.
15. The display device as claimed in claim 14, wherein the light emitting surface of the white light source and the light emitting surface of the ultraviolet light source are both bonded to the light guide plate, and the ultraviolet light source and the white light source are fixed to the light guide plate by adhesive filled in gaps between adjacent light sources.
16. The display device according to claim 15, wherein the extension portion of the flexible circuit board and the heat conductive sheet are attached by a third double-sided heat conductive tape, and wherein the heat conductive sheet and the control IC are attached by a fourth double-sided heat conductive tape.
17. The display device according to claim 10, wherein the material of the heat conductive sheet is graphite.
18. The display device of claim 10, further comprising a frame support, wherein the display panel is positioned within the frame support.
19. The display device of claim 8, wherein the display panel comprises a first polarizer on a side of the array substrate remote from the counter substrate, and a second polarizer on a side of the counter substrate remote from the array substrate.
20. The display device according to claim 1, wherein the light guide plate is made of quartz.
21. The display device of claim 1, wherein the display device is a semi-reflective display device or an all-reflective display device.
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| CN201910817799.6A CN110488540B (en) | 2019-08-30 | 2019-08-30 | Display device |
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| CN201910817799.6A CN110488540B (en) | 2019-08-30 | 2019-08-30 | Display device |
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| CN110488540A CN110488540A (en) | 2019-11-22 |
| CN110488540B true CN110488540B (en) | 2022-10-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110750013A (en) * | 2019-11-29 | 2020-02-04 | 深圳市金泰坦科技有限公司 | Display screen, front light-emitting device and manufacturing method |
| CN111415591B (en) * | 2020-04-29 | 2022-04-15 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof 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 |
| CN112987405A (en) * | 2021-03-17 | 2021-06-18 | 京东方科技集团股份有限公司 | Display device |
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