CN111650784B - Backlight module, display device, preparation method, control method and use method of display device - Google Patents
Backlight module, display device, preparation method, control method and use method of display device Download PDFInfo
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- CN111650784B CN111650784B CN202010737024.0A CN202010737024A CN111650784B CN 111650784 B CN111650784 B CN 111650784B CN 202010737024 A CN202010737024 A CN 202010737024A CN 111650784 B CN111650784 B CN 111650784B
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 7
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 23
- 239000004973 liquid crystal related substance Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 7
- 239000012780 transparent material Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 239000010410 layer Substances 0.000 description 91
- 238000005538 encapsulation Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—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
-
- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
Abstract
The invention discloses a backlight module, a display device, a preparation method, a control method and a use method thereof, wherein the backlight module comprises the following components: the light-emitting panel comprises a light-emitting area and a packaging area positioned at the periphery of the light-emitting area, and comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, wherein the second substrate is arranged opposite to the first substrate; the packaging layer is positioned between the first substrate and the second substrate and is positioned in the packaging area; the light-emitting elements are positioned between the first substrate and the second substrate and are scattered in the light-emitting area; the at least one optical film layer is positioned on the light-emitting surface side of the light-emitting panel, and the at least one optical film layer is detachably connected with the light-emitting panel. The invention is convenient for realizing the display of the backlight module and improving the display effect of the backlight module, and prevents the potential safety hazard caused by the fact that the display device cannot display information in real time.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module, a display device, a preparation method, a control method and a use method thereof.
Background
The liquid crystal display device comprises a display panel and a backlight module, wherein the backlight module provides a light source to enable the display panel to emit light for display.
In the use process of the liquid crystal display device, if the display panel is in a black screen state and can not display information, potential safety hazards are easily caused, for example, when the liquid crystal display device is a vehicle-mounted display device, if the liquid crystal display device can not display in real time, the vehicle can run and generate huge potential safety hazards.
Disclosure of Invention
The invention provides a backlight module, a display device, a preparation method, a control method and a use method thereof, which are convenient for realizing the display of the backlight module, improving the display effect of the backlight module and preventing potential safety hazards caused by the fact that the display device cannot display information in real time.
In one aspect, an embodiment of the present invention provides a backlight module, including: the light-emitting panel comprises a light-emitting area and a packaging area positioned at the periphery of the light-emitting area, and comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, wherein the second substrate is arranged opposite to the first substrate; the packaging layer is positioned between the first substrate and the second substrate and is positioned in the packaging area; the light-emitting elements are positioned between the first substrate and the second substrate and are scattered in the light-emitting area; the at least one optical film layer is positioned on the light-emitting surface side of the light-emitting panel, and the at least one optical film layer is detachably connected with the light-emitting panel.
On the other hand, the embodiment of the invention also provides a display device, which comprises a display panel and a backlight module, wherein the display panel comprises a third substrate, a fourth substrate and a display medium layer which is clamped between the third substrate and the fourth substrate, and the light emergent surface of the display panel is positioned on the third substrate; the backlight module is located at one side of the fourth substrate away from the third substrate, and the backlight module is the backlight module according to any one of the above embodiments.
In still another aspect, an embodiment of the present invention further provides a method for manufacturing a display device, including: forming a light-emitting panel, wherein the light-emitting panel is provided with a light-emitting area and a packaging area positioned at the periphery side of the light-emitting area, the light-emitting panel comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, the first substrate and the second substrate are oppositely arranged, the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area, and the plurality of light-emitting elements are positioned between the first substrate and the second substrate and are scattered in the light-emitting area; and detachably connecting at least one optical film layer, the display panel and the light-emitting panel.
In still another aspect, an embodiment of the present invention further provides a control method for controlling a display device according to any one of the foregoing embodiments to display, where the display device includes a first display mode in which display is performed by a display panel and a second display mode in which display is performed by a light emitting panel.
In still another aspect, an embodiment of the present invention further provides a method for using a display device, where the display device is used for displaying, the display device includes a first display mode and a second display mode, and the method includes: in a first display mode, displaying through a display panel; and separating the light-emitting panel from at least one optical film layer and the display panel, and displaying through the light-emitting panel, so that the display device is in a second display mode.
According to the backlight module, the display device, the preparation method, the control method and the use method of the backlight module, the backlight module comprises the light-emitting panel and at least one optical film layer which are detachably connected, so that the light-emitting panel is convenient to separate from the at least one optical film layer, the light-emitting panel can be independent to perform light-emitting display, the display effect of the light-emitting panel is prevented from being influenced when the at least one optical film layer covers the light-emitting panel, the display effect of the light-emitting panel is improved, meanwhile, the light-emitting panel is arranged to perform direct display, and potential safety hazards caused by the fact that the display panel cannot display when the backlight module is combined with the display panel can be prevented.
Further, the light-emitting panel comprises the first substrate and the second substrate which are oppositely arranged, and the packaging layer and the plurality of light-emitting elements which are arranged between the first substrate and the second substrate, so that the plurality of light-emitting elements are packaged between the first substrate and the second substrate, the overall strength of the light-emitting panel is improved, the protection performance of the light-emitting panel on the light-emitting elements during display is effectively improved, the damage to the light-emitting elements is prevented, and the stability of the light-emitting panel is improved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.
FIG. 1 is a top view of a backlight module according to an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along the direction M-M in FIG. 1;
FIG. 3 is a top view of a light emitting panel according to another embodiment of the present invention;
FIG. 4 is a cross-sectional view along the N-N direction of one type of light emitting panel shown in FIG. 3;
FIG. 5 is a cross-sectional view along the N-N direction of another light emitting panel shown in FIG. 3;
FIG. 6 is a schematic view of a light path of light emitted from a light emitting element through a bump structure according to an embodiment of the present invention;
FIG. 7 is another schematic view of the light path of light from a light emitting element through a raised structure;
FIG. 8 is a schematic view of still another light path of a light emitting element according to an embodiment of the present invention through a bump structure;
FIG. 9 is an enlarged schematic view of one of the light emitting panels shown in FIG. 3 at Q;
FIG. 10 is an enlarged schematic view of another light emitting panel shown in FIG. 3 at Q;
FIG. 11 is an enlarged schematic view at Q of yet another light emitting panel shown in FIG. 3;
FIG. 12 is a schematic cross-sectional view of a display device according to an embodiment of the present invention;
fig. 13 is a schematic diagram of a control principle of a display device according to an embodiment of the present invention;
fig. 14 is a schematic view of a display screen of a light emitting panel according to an embodiment of the present invention.
FIG. 15 is a schematic flow chart of a method for manufacturing a display device according to an embodiment of the present invention;
fig. 16 is a flowchart illustrating a method for using a display device according to an embodiment of the invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
Features and exemplary embodiments of various aspects of the invention are described in detail below. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
On electronic equipment such as a vehicle-mounted display device, important information such as running speed, oil quantity and the like needs to be displayed in real time, so that potential safety hazards are prevented from being generated in the running process. In some embodiments, the display device may be a liquid crystal display device, where the liquid crystal display device includes a display panel and a backlight module disposed opposite to the display panel, and the backlight module provides a light source to realize display through the display panel.
When the display panel fails, for example, the display panel is in black screen, the light emitted by the backlight module cannot penetrate through the display panel, so that the display device cannot display key information in real time, and huge potential safety hazards are easily generated in the operation of the vehicle.
In order to solve the above problems, embodiments of the present invention provide a backlight module 100, a display device 1000, a method for manufacturing the display device, a method for controlling the display device, and a method for using the display device. The backlight module 100, the display device 1000, the manufacturing method of the display device, the control method of the display device and the use method of the display device according to the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2 together, fig. 1 is a top view of a backlight module according to an embodiment of the invention, and fig. 2 is a cross-sectional view along the direction M-M in fig. 1. The embodiment of the invention provides a backlight module 100, which comprises a light-emitting panel 10 and at least one optical film layer 20. At least one optical film layer 20 is located on the light-emitting surface side of the light-emitting panel 10, wherein the at least one optical film layer 20 is detachably connected with the light-emitting panel 10.
The light emitting panel 10 has a light emitting area LA and a package area PA located at an outer peripheral side of the light emitting area LA, and the light emitting panel 10 includes a first substrate 11, a second substrate 12, a package layer 13, and a plurality of light emitting elements 14. The second substrate 12 is disposed opposite to the first substrate 11, the encapsulation layer 13 is disposed between the first substrate 11 and the second substrate 12 and in the encapsulation area PA, and the plurality of light emitting elements 14 are disposed between the first substrate 11 and the second substrate 12 and are dispersed in the light emitting area LA. Alternatively, the plurality of light emitting elements 14 may be uniformly dispersed in the light emitting area LA to improve the light emitting uniformity of the light emitting panel 10.
According to the backlight module 100 of the embodiment of the invention, the light-emitting panel 10 is detachably connected with the at least one optical film layer 20, so that the light-emitting panel 10 is convenient to separate from the at least one optical film layer 20, the light-emitting panel 10 can be independent to perform light-emitting display, and the display effect of the light-emitting panel 10 is prevented from being affected when the at least one optical film layer 20 is covered on the light-emitting panel 10, so that the display effect of the light-emitting panel 10 is improved. Meanwhile, by providing the light-emitting panel 10 to directly display, the potential safety hazard caused by the fact that the display panel 200 cannot display can be prevented when the backlight module 100 and the display panel 200 are combined. Further, since the plurality of light emitting elements 14 are encapsulated between the first substrate 11 and the second substrate 12, the overall strength of the light emitting panel 10 is improved, and the protection performance of the light emitting elements 14 when the light emitting panel 10 is displaying is effectively improved, and damage to the light emitting elements 14 is prevented.
In order to provide the second substrate 12 and the first substrate 11 with a high supporting strength and prevent the light emitting element 14 from being damaged due to external stress when the light emitting panel 10 is independently displayed, the second substrate 12 may be made of glass, and the first substrate 11 may be made of glass. In order to enable the first substrate 11 and the second substrate 12 to have certain buffer performance, the packaging layer 13 between the first substrate 11 and the second substrate 12 can be formed by foam, and the foam has certain buffer performance, so that the second substrate 12 or the first substrate 11 can play a certain role in buffering when being stressed, and compared with the packaging material with higher hardness, the foam packaging material in the embodiment of the invention has higher stability and is not easy to generate cracks to cause packaging failure.
Referring to fig. 3 to 5 together, fig. 3 is a top view of a light emitting panel according to another embodiment of the present invention, fig. 4 is a cross-sectional view along the N-N direction of one light emitting panel shown in fig. 3, and fig. 5 is a cross-sectional view along the N-N direction of another light emitting panel shown in fig. 3. Since the light emitting elements 14 are scattered in the light emitting area LA and the light emitting elements 14 are arranged at intervals, in order to prevent the light from being uneven when the light emitting panel 10 emits light and displays due to dark light in the area between the light emitting elements 14, in some embodiments, the light emitting surface of the backlight module 100 is located on the second substrate 12, and the backlight module 100 further includes a plurality of protruding structures 15, where the protruding structures 15 are located on the surface of the second substrate 12 facing the light emitting elements 14, that is, the protruding structures 15 extend from the surface of the second substrate 12 facing the light emitting elements 14 to a direction approaching the light emitting elements 14. By arranging the protruding structures 15 on the second substrate 12, the light emitted by the light emitting elements 14 can change the light path at the protruding structures 15, so that the protruding structures 15 play a role in diffusing the light emitting angles of the light emitting elements 14, and the phenomenon that the light in the area between the light emitting elements 14 is darker to cause uneven brightness when the light emitting panel 10 emits light for display is effectively prevented, so that the light emitting uniformity of the light emitting panel 10 is improved.
In some embodiments, as shown in fig. 4, the protruding structures 15 are disposed directly opposite the light emitting elements 14, or as shown in fig. 5, the front projections of the protruding structures 15 on the second substrate 12 are located between the front projections of two adjacent light emitting elements 14 on the second substrate 12. With the above arrangement, the positional relationship between the convex structure 15 and the light emitting element 14 can be reasonably set so that the convex structure 15 effectively spreads the light emitting angle of the light emitting element 14, thereby improving the uneven brightness in the light emitting panel 10.
To facilitate the fabrication of the bump structure 15 and to enable the bump structure 15 to be stably attached to the second substrate 12, in some embodiments, as shown in fig. 5, the bump structure 15 is integrally formed with the second substrate 12, where the bump structure 15 and the second substrate 12 are formed of the same material. In practice, the surface of the second substrate 12 facing the light emitting element 14 may be etched to form a plurality of raised structures 15. It should be understood that, as shown in fig. 4, the bump structure 15 may be manufactured separately from the second substrate 12, and the bump structure 15 is connected to the second substrate 12 by optical adhesive, where the materials of the bump structure 15 and the second substrate 12 may be the same or different, so long as the bump structure 15 has an effective diffusion effect on the light emitted by the light emitting element 14.
When the protruding structures 15 are disposed on the second substrate 12, in some embodiments, the angle at which the light emitted from the light emitting element 14 can diffuse out through the plurality of protruding structures 15 is greater than or equal to 10.5 °. By the arrangement, the light emitting angle of the light emitting element 14 can be effectively diffused, the display effect of the light emitting panel 10 is improved, and meanwhile, when the light emitting panel 10 is applied to the display device 1000, a more uniform light source can be provided for the display panel 200, so that the display effect of the display panel 200 is improved.
Referring to fig. 6 to 8, fig. 6 is a schematic view of an optical path of light emitted from a light emitting element passing through a bump structure according to an embodiment of the present invention, fig. 7 is a schematic view of another optical path of light emitted from a light emitting element passing through a bump structure, and fig. 8 is a schematic view of another optical path of light emitted from a light emitting element passing through a bump structure according to an embodiment of the present invention. The principle that light emitted from the light emitting element 14 is emitted through the plurality of convex structures 15 to be able to spread at an angle of 10.5 ° or more will be explained with reference to fig. 6 to 8, and in fig. 6 to 8, the convex structures 15 are calculated to be equivalent to hemispherical structures due to their small structural dimensions.
In some embodiments, the light emitting angle of the light emitting element 14 is 0 ° to 120 °, and the light emitting angle of the light emitting element 14 refers to an angle at which most of the light emitted by the light emitting element 14 as a light source is distributed. When the outermost light of the light emitting element 14 just passes the edge of the convex structure 15, as shown in fig. 6, the arrow dotted line in the figure indicates the light transmission path emitted from the light emitting element 14, and the light is refracted when passing through the convex structure 15, according to the refraction law of the light: sinA/sinb=n a /n b Wherein A is the angle between the light emitted from the light emitting element 14 and the surface of the second substrate 12 facing the light emitting element 14 when the light irradiates the protruding structure 15, B is the angle after the light is refracted through the second substrate 12 into the air, and n a Is the refractive index of the second substrate, n b Is the refractive index of air. According to the above-mentioned refraction law, the angle C=A-arcsin [ sinA/(n) at which the light emitted from the light emitting element 14 can diffuse after passing through the plurality of convex structures 15 a /n b )]。
When the second substrate 12 is made of glass, it is calculated that the angle at which the light emitted from the light emitting element 14 can be diffused after passing through the plurality of convex structures 15 is 10.5 ° based on the refractive index of the air layer being 1, the refractive index of the glass being 1.5, and the maximum light emitting angle of the light emitting element 14 being 120 °.
As shown in fig. 7, in some embodiments, the protrusion 15 is disposed opposite to the light emitting element 14, where the center of the protrusion 15 coincides with the center of the light emitting element 14, and the equivalent radius R of the protrusion 15 along the cross section in the direction perpendicular to the plane of the light emitting panel 10 1 Distance L between the light emitting surface of the light emitting element 14 and the surface of the second substrate 12 facing the light emitting element 14 1 And the distance P between two adjacent raised structures 15 1 Satisfies the relationship 1:
L 1 *tan(θ 1 /2)≤P 1 ＜L 1 *tan(θ 1 /2)+R 1 1 (1)
Wherein θ 1 For the maximum light emitting angle of the light emitting element 14, the distance P between two adjacent bump structures 15 1 Refers to the distance between two points of adjacent two of the convex structures 15 at the same position in the plane direction of the light emitting panel 10, for example, the distance between the centers of circles of the adjacent two of the convex structures 15 is the distance P1 between the adjacent two of the convex structures 15 in the cross section of the convex structures 15. Since the structure size of the convex structure 15 is small, the equivalent is calculated as a hemispherical structure, and the equivalent radius R of the convex structure 15 along the cross section in the direction perpendicular to the plane of the light emitting panel 10 is calculated 1 Is the distance between the point on the curved surface edge of the hemispherical structure and the sphere center. Through the above arrangement, the position of the protruding structure 15 and the size of the protruding structure 15 can be reasonably set, thereby effectively improving the diffusion of the light emitting angle of the protruding structure 15 to the light emitting element 14.
Specifically, as shown in fig. 7, when the outermost light of the light emitting element 14 just passes through the center of the protruding structure, the outermost light is a critical point where refraction does not occur, and when the light emitted by the light emitting element 14 passes through the corresponding position of the protruding structure filled with the filling line in fig. 7, the light will be refracted, and for convenience of explanation, this partial region is referred to as a refractive region, where the region filled with the filling line of the protruding structure is a region where the light emitting region of the light emitting element 14 overlaps with the protruding structure 15 when the outermost light of the light emitting element 14 passes through the center of the protruding structure. As shown in fig. 8, when the light emitted from one of the light emitting elements 14 passes through the refractive region, the incident angle a=arcot ((P) 1 -R 1 )/L 1 ) The angle C at which light is diffused after passing through the convex structure 15 satisfies the following relationship:
C＝A-B＝arccot((P 1 -R 1 )/L 1 )-arcsin(sin(arccot((P 1 -R 1 )/L 1 )/(n a /n b )))，
wherein B is an angle between the light transmitted through the protruding structure 15 and the surface of the second substrate 12 facing the light emitting element 14.
With continued reference to fig. 5, in some embodiments, the front projection of the bump structure 15 on the second substrate 12 is located between the front projections of two adjacent light emitting elements 14 on the second substrate 12, and the equivalent radius R of the bump structure 15 along the cross section perpendicular to the plane of the light emitting panel 10 2 Distance L between the light emitting surface of the light emitting element 14 and the surface of the second substrate 12 facing the light emitting element 14 2 And the distance P between two adjacent raised structures 15 2 Satisfies the relationship 2:
2L 2 *tan(θ 2 /2)≤P 2 ＜2L 2 *tan(θ 2 /2)+2R 2 2, 2
Wherein θ 2 Is the maximum light emission angle of the light emitting element 14. Through the above arrangement, the position of the protruding structure 15 and the size of the protruding structure 15 can be reasonably set, so that the light emitting angle of the protruding structure 15 to the light emitting element 14 is effectively improved, alternatively, the distance between the orthographic projection of the protruding structure 15 on the second substrate 12 and the orthographic projection of two adjacent light emitting elements 14 on the second substrate 12 is equal, and at this time, the orthographic projection of the protruding structure 15 on the second substrate 12 is located in the middle of the orthographic projections of two adjacent light emitting elements 14 on the second substrate 12. The principle of the relevant dimensions of the protruding structures 15 in fig. 5 is similar to the principle of the relevant dimensions of the protruding structures 15 in fig. 4 and will not be repeated.
Referring to fig. 9 to 11 together, fig. 9 is an enlarged schematic view of one light emitting panel shown in fig. 3 at Q, fig. 10 is an enlarged schematic view of another light emitting panel shown in fig. 3 at Q, and fig. 11 is an enlarged schematic view of still another light emitting panel shown in fig. 3 at Q. In some embodiments, the light emitting elements 14 may be arranged in multiple rows and columns to facilitate fabrication of the light emitting elements 14 and proper routing. When the light-emitting panel 10 includes the protruding structures 15, the protruding structures 15 may be disposed between adjacent light-emitting elements 14 at intervals, so that the light emitted from the light-emitting panel 10 is more uniform.
In order to further homogenize the light emitted from the light-emitting panel 10, in some embodiments, the light-emitting elements 14 are arrayed along the first direction X to form a plurality of light-emitting unit rows, the plurality of light-emitting unit rows are arranged along the second direction Y, the second direction Y is perpendicular to the first direction X, and at least part of the light-emitting elements 14 of two adjacent light-emitting unit rows are arranged in a staggered manner along the first direction X. Through the arrangement, the light emitting elements 14 are arranged in a staggered manner, so that the light emitted by the light emitting elements 14 is distributed more uniformly in the light emitting area LA, the existence of dark areas caused by the fact that the light emitting elements 14 are arranged opposite to each other is effectively prevented, and the arrangement mode of the light emitting elements 14 is convenient for arranging a connecting line structure on the light emitting panel 10 and connecting the connecting line structure with the electrodes of the light emitting elements 14.
As shown in fig. 11, in the implementation, the light emitting elements 14 in every two adjacent light emitting unit rows may be arranged in a staggered manner along the first direction X, at this time, the light emitting elements 14 in the light emitting unit rows of the odd numbered rows may be arranged opposite to each other along the first direction X, the light emitting elements 14 in the light emitting unit rows of the even numbered rows are arranged opposite to each other along the first direction X, and the light emitting elements 14 of the odd numbered rows and the light emitting elements 14 of the even numbered rows are arranged in a staggered manner, and optionally, each light emitting element 14 in the even numbered rows is located between every two adjacent light emitting elements 14 of the odd numbered rows. It can be understood that the arrangement of the light emitting elements 14 is not limited in the present invention, so long as at least some of the light emitting elements 14 are arranged in a staggered manner, so as to reduce uneven brightness in the light emitting area LA.
In order to improve the light-emitting efficiency of the light-emitting panel 10, in some embodiments, the light-emitting surface is located on the second substrate 12, and the constituent material of the second substrate 12 is a transparent material, and the transparent material includes glass. By the arrangement, the light emitted by the light emitting element 14 can penetrate through the second substrate 12, so that the influence of the second substrate 12 on the light is reduced, and the display effect of the light emitting panel 10 is improved. Meanwhile, when the transparent material is glass, the overall strength of the light-emitting panel 10 can be improved, so that the second substrate 12 can effectively protect the light-emitting element 14, and meanwhile, supporting structures such as a frame in the backlight module, and the like can be omitted, thereby facilitating the realization of the light and thin structure of the backlight module 100 and the display device 1000.
When the backlight module 100 is applied to the display device 1000, in order to better enable the light emitted from the backlight module 100 to enter the display panel 200, in some embodiments, at least one optical film layer 20 includes one or a combination of a scattering layer 21, a reflective layer 22, a color conversion layer 23, and a brightness enhancing sheet 24 sequentially disposed along a direction away from the light-emitting panel 10. Optionally, the at least one optical film layer 20 may include a combination of a scattering layer 21, a reflecting layer 22, a color conversion layer 23, and a brightness enhancing sheet 24 sequentially disposed along a direction away from the light-emitting panel 10, so as to achieve more efficient transmission of light in the backlight module 100 onto the display panel 200.
In a specific implementation, the light emitting element 14 in the backlight module 100 may be a light emitting element emitting blue light, and in order to make the light emitted by the backlight module 100 be white light, the reflective layer 22 may be a reflective film reflecting red light and green light, and when the blue light emitted by the light emitting element 14 sequentially passes through the scattering layer 21 and the reflective layer 22, the reflective layer 22 may correct coordinates of white points, so that the light passes through the color conversion layer 23 and then makes the backlight module 100 emit white light. The prism sheet 24 may be a prism sheet to collect light emitted from the backlight module 100.
Alternatively, the light emitting elements 14 may be Micro light emitting elements 14 (Mini-LEDs or Micro-LEDs), the Micro light emitting elements 14 have smaller planar dimensions, and a greater number of Micro light emitting elements 14 can be arranged in the light emitting area LA with the same area, so as to improve the display effect of the light emitting panel 10, and the backlight module 100 can better provide a light source for the display panel 200 when the backlight module 100 is applied to the display panel 200.
In summary, according to the backlight module 100 of the embodiment of the invention, the backlight module 100 includes the light-emitting panel 10 and at least one optical film 20 which are detachably connected, so that the light-emitting panel 10 is convenient to be separated from the at least one optical film 20, and the light-emitting panel 10 can be separated for performing light-emitting display, so that the display effect of the light-emitting panel 10 is prevented from being affected when the at least one optical film 20 is covered on the light-emitting panel 10, and the display effect of the light-emitting panel 10 is improved.
Further, since the light-emitting panel 10 includes the first substrate 11 and the second substrate 12 disposed opposite to each other, and the encapsulation layer 13 and the plurality of light-emitting elements 14 disposed between the first substrate 11 and the second substrate 12, the plurality of light-emitting elements 14 are encapsulated between the first substrate 11 and the second substrate 12, so that the overall strength of the light-emitting panel 10 is improved, the protection performance of the light-emitting panel 10 on the light-emitting elements 14 during display is effectively improved, damage to the light-emitting elements 14 is prevented, and the stability of the light-emitting panel 10 is improved.
Referring to fig. 12, fig. 12 is a schematic cross-sectional view of a display device according to an embodiment of the invention. The embodiment of the invention further provides a display device 1000, which includes a display panel 200 and a backlight module 100, wherein the display panel 200 includes a third substrate 31 and a fourth substrate 32 disposed opposite to each other, and a display medium layer 33 sandwiched between the third substrate 31 and the fourth substrate 32, and a light emitting surface of the display panel 200 is located on the third substrate 31. The backlight module 100 is located on a side of the fourth substrate 32 facing away from the third substrate 31, and the backlight module 100 is the backlight module 100 in any of the above embodiments. Alternatively, the third substrate 31 may be a color film substrate, the fourth substrate 32 may be an array substrate, and the display medium layer 33 may be a liquid crystal layer, so as to implement display of the display panel 200 by deflection of liquid crystal molecules in the liquid crystal layer.
According to the display device 1000 of the embodiment of the invention, the backlight module 100 comprises the light-emitting panel 10 and at least one optical film layer 20 which are detachably connected, so that the light-emitting panel 10 is convenient to separate from the at least one optical film layer 20, the light-emitting panel 10 is enabled to be independent for light-emitting display, and the at least one optical film layer 20 is prevented from affecting the display effect of the light-emitting panel 10, thereby improving the display effect of the light-emitting panel 10, and simultaneously, preventing potential safety hazards caused by the fact that the display panel 200 cannot display when the backlight module 100 is combined with the display panel 200.
When the backlight module 100 is applied in the display device 1000, in order to achieve direct display of the light-emitting panel 10, in some embodiments, at least one optical film layer 20 is connected to the fourth substrate 32 of the display panel 200, and the display panel 200 is detachably connected to the light-emitting panel 10 so that at least one optical film layer 20 is detachably connected to the light-emitting panel 10. With the above arrangement, when the display panel 200 malfunctions, for example, the display panel 200 is blacked out, the display panel 200 in the display device 1000 can be separated from the light emitting panel 10, so that the light emitting panel 10 can independently perform display.
For example, the display panel 200 may be fixedly connected with the at least one optical film layer 20 through an optical adhesive to form the display structure 300, and the display structure 300 is detachably connected with the light-emitting panel 10, for example, the display panel 200 and the at least one optical film layer 20 may be integrally connected with the light-emitting panel 10 in a clamping manner, so that when the light-emitting panel 10 is required to display, for example, when the display panel 200 generates a black screen or the display device 1000 is in a power-saving mode, the light-emitting panel 10 is conveniently separated from the display panel 200 and the at least one optical film layer 20. In specific implementation, a fastening structure may be disposed at the frame of the light-emitting panel 10, and a connection structure adapted to the fastening structure is disposed at the frame of the display structure 300, so as to implement detachable connection between the display structure 300 and the light-emitting panel 10 by fastening the connection structure and the fastening structure to each other.
Or, the display panel 200 may be detachably connected with at least one optical film layer 20, and at least one optical film layer 20 is detachably connected with the light-emitting panel 10, so that the display panel 200, at least one optical film layer 20, and the light-emitting panel 10 may be switched between an assembled state and a separated state, so as to facilitate the switching of multiple display modes of the display device 1000.
Referring to fig. 13, fig. 13 is a schematic diagram illustrating a control principle of a display device according to an embodiment of the invention. In some embodiments, the display device 1000 further includes a control component Host, and the timing controller Tcon, where the control component Host is connected to the display panel 200 and the backlight module 100 through the timing controller Tcon, so as to control the display panel 200 and the backlight module 100 to be in a working state, so as to realize normal display of the display panel 200. In addition, the control assembly Host can also be directly connected with the backlight module 100, and when the display panel 200 fails, the control assembly Host can directly control the backlight module 100 to display.
Fig. 14 is a schematic view illustrating a display screen of a light emitting panel according to an embodiment of the invention. When the display device 1000 is applied to the vehicle-mounted display field, the light-emitting panel 10 can display one or a combination of the speed, the oil quantity, the time and the characters of the vehicle running, so that a driver is prompted to check the running state of the vehicle in real time, and the generation of potential safety hazards is effectively improved.
Referring to fig. 15, fig. 15 is a flowchart illustrating a method for manufacturing a display device according to an embodiment of the invention. The embodiment of the invention also provides a preparation method of the display device, which comprises the following steps:
s110, the light-emitting panel 10 is formed.
The light-emitting panel 10 has a light-emitting area LA and a package area PA located on an outer periphery side of the light-emitting area LA, the light-emitting panel 10 includes a first substrate 11, a second substrate 12, a package layer 13, and a plurality of light-emitting elements 14, the first substrate 11 is disposed opposite to the second substrate 12, the package layer 13 is located between the first substrate 11 and the second substrate 12 and located at the package area PA, and the plurality of light-emitting elements 14 are located between the first substrate 11 and the second substrate 12 and are dispersed in the light-emitting area LA. By manufacturing the molded light-emitting panel 10, the light-emitting panel 10 has better strength, and the light-emitting element 14 is encapsulated between the first substrate 11 and the second substrate 12, and compared with the case that the protective layer is arranged on one side of the light-emitting element 14 away from the first substrate 11, the second substrate 12 can more effectively protect the light-emitting element 14.
S120, detachably connecting at least one optical film layer 20, the display panel 200 and the light-emitting panel 10.
By detachably connecting the light-emitting panel 10 with at least one optical film layer 20 and the display panel 200, the light-emitting panel 10 can be independent, and direct display of the light-emitting panel 10 is realized.
In some embodiments, the step S110, the step of forming the light emitting panel 10 includes:
providing a first substrate 11;
a plurality of light emitting elements 14 are provided on the first substrate 11;
providing a second substrate 12;
a package layer 13 is formed on one of the first substrate 11 and the second substrate 12, and the second substrate 12 is bonded to the first substrate 11 via the package layer 13 to form the light-emitting panel 10.
In a specific implementation, the sealing layer 13 may be formed on the outer periphery side of the plurality of light emitting elements 14 on the first substrate 11, and then the second substrate 12 may be aligned and bonded with the first substrate 11 on which the sealing layer 13 is formed, thereby forming the light emitting panel 10. Alternatively, the encapsulation layer 13 may be formed on the second substrate 12, and then the first substrate 11 formed with the light emitting elements 14 and the second substrate 12 formed with the encapsulation layer 13 may be aligned and connected, so that the encapsulation layer 13 can seal the plurality of light emitting elements 14 inside the encapsulation layer 13 to form the light emitting panel 10. Through setting up encapsulation layer 13 and sealing light-emitting component 14 between first base plate 11 and second base plate 12, can effectively improve the bulk strength of luminescent panel 10 to improve luminescent panel 10's stability, second base plate 12 can effectively support at least one deck optical film layer 20 simultaneously, can omit the chase structure, is favorable to reducing the frame and realizes the lightweight of display device 1000.
To achieve independent display of the light emitting panel 10, in some embodiments, the step S120 of detachably connecting the at least one optical film layer 20 and the display panel 200 with the light emitting panel 10 includes: detachably connecting at least one optical film layer 20 with the light-emitting panel 10; and detachably connecting the display panel 200 to a side of the at least one optical film layer 20 facing away from the light emitting panel 10. By the above arrangement, the light emitting panel 10 can be independently displayed, so that information can be displayed in real time.
In some embodiments, the step S120 of detachably connecting the at least one optical film layer 20 and the display panel 200 with the light-emitting panel 10 includes: connecting the display panel 200 with at least one optical film layer 20 to form a display structure 300; the light emitting panel 10 is detachably connected with the display structure 300.
In a specific implementation, at least one optical film layer 20 may be fixedly connected with the display panel 200 to form a display structure 300, where the display structure 300 is detachably connected with the light-emitting panel 10, and the detachable connection refers to a connection manner that can realize separation and combination of the display structure 300 and the light-emitting panel 10. For example, the display structure 300 may be connected to the light emitting panel 10 in a snap fit manner, or be connected by a bolt, or the display structure 300 and the light emitting panel 10 may be detachably connected by a telescopic or folding structure, specifically, the light emitting panel 10 and the display structure 300 may be offset from each other by a telescopic structure, so that the light emitting panel 10 and the display structure 300 are offset from each other in the plane direction of the display device 1000, and the display structure 300 is prevented from affecting the display of the light emitting panel 10.
In yet another aspect, an embodiment of the present invention further provides a control method of a display device, for controlling the display device 1000 of any of the above embodiments to display, where the display device 1000 includes a first display mode in which display is performed through the display panel 200 and a second display mode in which display is performed through the light emitting panel 10.
In a specific implementation, the display device 1000 may include a control component Host and a timing controller Tcon, where the control component Host is electrically connected to the timing controller Tcon, and the timing controller Tcon may be electrically connected to the display panel 200 and the backlight module 100, respectively, and the control component Host may control the liquid crystal deflection on the display panel 200 and the light emission of the backlight module 100 through the timing controller Tcon, so as to implement the display of the display panel 200, that is, the control component Host and the timing controller Tcon cooperate to control the display device 1000 to be in the first display mode. In the embodiment of the invention, in order to directly display the light-emitting panel 10 in the backlight module 100, the control assembly Host is further electrically connected to the backlight module 100, that is, the control assembly Host may be electrically connected to the light-emitting panel 10, so that when the light-emitting panel 10 is separated from the display panel 200 and the at least one optical film layer 20, the control assembly Host controls the light-emitting panel 10 to display, so that the display device 1000 is in the second display mode. Specifically, each light emitting element 14 in the light emitting panel 10 may be regarded as one pixel, and the pixels of the light emitting panel 10 may be controlled to display by the control unit Host to form different display screens.
In some embodiments, the display device 1000 is an in-vehicle display device, and in the second display mode, the light emitting panel 10 displays one or a combination of vehicle speed, oil amount, time, and characters. Through the arrangement, the display device 1000 can display in real time so as to be watched by a driver in real time, and therefore potential safety hazards are effectively reduced. Alternatively, when the user desires the display device 1000 to be in the power saving mode, the light emitting panel 10 may be separated from the display panel 200 and the at least one optical film layer 20, thereby directly displaying the light emitting panel 10.
In some embodiments, a control method of a display device includes: in the first display mode, the display panel 200 and at least one optical film layer 20 are connected to the light-emitting panel 10; in the second display mode, the display panel 200 and at least one optical film layer 20 are separated from the light emitting panel 10. Through the above arrangement, the display device 1000 can realize various display modes, and the display panel 200 and the at least one optical film layer 20 are prevented from affecting the display of the light emitting panel 10 by separating the display panel 200 and the at least one optical film layer 20 from the light emitting panel 10, thereby improving the display effect of the light emitting panel 10.
In some embodiments, the control method of the display device further includes: the display device 1000 is controlled to be in the second display mode based on the display panel 200 being in the failure state or the display device 1000 being judged to be in the power saving state. With the above arrangement, it is convenient to realize switching of the display device 1000 in a plurality of display modes, and the versatility of the display device 1000 is improved.
Referring to fig. 16, fig. 16 is a flowchart illustrating a method for using a display device according to an embodiment of the invention. The embodiment of the present invention further provides a method for using the display device 1000 of any one of the embodiments to display, where the display device 1000 includes a first display mode and a second display mode, and the method for using the display device includes:
s210, in a first display mode, displaying through the display panel 200;
s220, separating the light-emitting panel 10 from the at least one optical film layer 20 and the display panel 200, and displaying by the light-emitting panel 10, so that the display device 1000 is in the second display mode.
In particular, when the user desires the display device 1000 to be in the power saving mode or when the display panel 200 is black, the user may separate the assembled display device 1000, that is, the light-emitting panel 10 from the at least one optical film layer 20 and the display panel 200, so that the light-emitting panel 10 displays. When the performance of the display panel 200 is good and the user desires to display through the display panel 200, the light emitting panel 10 may be assembled with at least one optical film layer 20 and the display panel 200, thereby causing the display panel 200 to display. It is understood that an automatic separating and assembling structure, such as an automatic engaging structure, may be provided in the display device 1000, so as to facilitate the assembling and separating of the display panel 200 and the light emitting panel 100 by a user.
According to the application method of the display device provided by the embodiment of the invention, the light-emitting panel 10 is separated from the display panel 200 and at least one optical film layer 20, so that the light-emitting panel 10 can be independent to perform light-emitting display, and the display effect of the light-emitting panel 10 is prevented from being influenced when the at least one optical film layer 20 is covered on the light-emitting panel 10, so that the display effect of the light-emitting panel 10 is improved. Meanwhile, by providing the light emitting panel 10 to directly display, the potential safety hazard caused by the fact that the display panel 200 cannot display when the backlight module 100 and the display panel 200 are combined can be prevented. Further, since the plurality of light emitting elements 14 are encapsulated between the first substrate 11 and the second substrate 12, the overall strength of the light emitting panel 10 is improved, the protection performance of the light emitting elements 14 when the light emitting panel 10 displays is effectively improved, the damage to the light emitting elements 14 is prevented, and the popularization and the application are facilitated.
These embodiments are not all details described in detail according to the present invention as examples above, nor are they intended to limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (15)
1. A display device, comprising:
the display panel comprises a third substrate, a fourth substrate and a display medium layer, wherein the third substrate and the fourth substrate are oppositely arranged, the display medium layer is clamped between the third substrate and the fourth substrate, and a light emergent surface of the display panel is positioned on the third substrate;
the backlight module is positioned at one side of the fourth substrate, which is away from the third substrate;
the display device comprises a first display mode and a second display mode, wherein the first display mode displays through the display panel, and the second display mode displays through the light-emitting panel;
the backlight module comprises:
a light emitting panel having a light emitting region and a package region located at an outer peripheral side of the light emitting region, the light emitting panel comprising:
a first substrate;
a second substrate disposed opposite to the first substrate;
the packaging layer is positioned between the first substrate and the second substrate and is positioned in the packaging area; and
a plurality of light emitting elements located between the first substrate and the second substrate and dispersed in the light emitting region;
and the at least one optical film layer is positioned on the light-emitting surface side of the light-emitting panel, and the at least one optical film layer is detachably connected with the light-emitting panel.
2. The display device of claim 1, wherein the light-emitting surface of the light-emitting panel is located on the second substrate, the backlight module further comprises a plurality of protruding structures located on a surface of the second substrate facing the light-emitting element,
the convex structures are arranged opposite to the light-emitting elements, or orthographic projections of the convex structures on the second substrate are positioned between orthographic projections of two adjacent light-emitting elements on the second substrate.
3. The display device of claim 2, wherein the bump structure is integrally formed with the second substrate.
4. The display device according to claim 2, wherein an angle at which light emitted from the light-emitting element can be diffused out through the plurality of convex structures is greater than or equal to 10.5 °.
5. A display device according to claim 2, wherein the convex structure is disposed opposite to the light emitting element, and the convex structure has an equivalent radius R of a cross section in a direction perpendicular to a plane of the light emitting panel 1 Distance L between the light emitting surface of the light emitting element and the surface of the second substrate facing the light emitting element 1 And the distance P between two adjacent convex structures 1 Satisfies the relationship 1:
L 1 *tan(θ 1 /2)≤ P 1 ＜L 1 *tan(θ 1 /2)+R 1 1 (1)
Wherein θ 1 Is the maximum light emitting angle of the light emitting element.
6. A display device as claimed in claim 2, characterized in that the orthographic projection of the protruding structures on the second substrate is located between orthographic projections of adjacent two of the light emitting elements on the second substrate, the protruding structures having an equivalent radius R along a cross section perpendicular to the plane of the light emitting panel 2 Distance L between the light emitting surface of the light emitting element and the surface of the second substrate facing the light emitting element 2 And the distance P between two adjacent convex structures 2 Satisfies the relationship 2:
2L 2 *tan(θ 2 /2)≤ P 2 ＜2L 2 *tan(θ 2 /2)+2R 2 2, 2
Wherein, the liquid crystal display device comprises a liquid crystal display device,θ 2 is the maximum light emitting angle of the light emitting element.
7. The display device according to any one of claims 1 to 6, wherein the plurality of light emitting elements are arrayed in a first direction to form a plurality of light emitting unit rows, the plurality of light emitting unit rows are arranged in a second direction, the second direction is perpendicular to the first direction, and the light emitting elements of at least part of two adjacent light emitting unit rows are arranged in a staggered manner in the first direction.
8. The display device according to any one of claims 1 to 6, wherein the light-emitting surface of the light-emitting panel is located on the second substrate, the second substrate is made of a transparent material,
The transparent material comprises glass.
9. The display device according to any one of claims 1 to 6, wherein the at least one optical film layer includes one or a combination of a diffusion layer, a reflection layer, a color conversion layer, and a light-increasing sheet, which are sequentially disposed in a direction away from the light-emitting panel.
10. The display device of claim 1, wherein the at least one optical film layer is coupled to the fourth substrate of the display panel, the display panel being detachably coupled to the light-emitting panel such that the at least one optical film layer is detachably coupled to the light-emitting panel.
11. A method of manufacturing a display device, comprising:
forming a light-emitting panel, wherein the light-emitting panel is provided with a light-emitting area and a packaging area positioned on the periphery side of the light-emitting area, the light-emitting panel comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, the first substrate is arranged opposite to the second substrate, the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area, and the plurality of light-emitting elements are positioned between the first substrate and the second substrate and are scattered in the light-emitting area;
The display device comprises a first display mode and a second display mode, wherein the first display mode is used for displaying through the display panel, and the second display mode is used for displaying through the light-emitting panel.
12. The method of manufacturing a display device according to claim 11, wherein the step of forming a light-emitting panel includes:
providing the first substrate;
disposing the plurality of light emitting elements on the first substrate;
providing the second substrate;
and forming a packaging layer on one of the first substrate and the second substrate, and bonding the second substrate and the first substrate through the packaging layer to form the light-emitting panel.
13. The method of claim 11, wherein detachably connecting the at least one optical film layer and the display panel to the light-emitting panel comprises:
detachably connecting at least one optical film layer with the light-emitting panel;
and the display panel is detachably connected to one side of the at least one optical film layer, which is away from the light-emitting panel.
14. The method of claim 11, wherein detachably connecting the at least one optical film layer and the display panel to the light-emitting panel comprises:
connecting the display panel with the at least one optical film layer to form a display structure;
and detachably connecting the light-emitting panel with the display structure.
15. A method of using the display device of any one of claims 1 to 10 for displaying, the display device including a first display mode and a second display mode, the method comprising:
in the first display mode, displaying through the display panel;
and separating the light-emitting panel from the at least one optical film layer and the display panel, and displaying through the light-emitting panel, so that the display device is in the second display mode.
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|---|---|
| CN111650784A (en) | 2020-09-11 |
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