CN114648925A

CN114648925A - Display device

Info

Publication number: CN114648925A
Application number: CN202011519677.8A
Authority: CN
Inventors: 雷晓华
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-06-21

Abstract

The invention relates to the technical field of display and discloses a display device. The display device includes: a display screen having a plurality of light emitting units; and the transmission adjusting layer is arranged on the display screen, covers the plurality of light-emitting units and is used for transmitting the light rays emitted by the plurality of light-emitting units. The adjustment layer has a plurality of adjustment units corresponding to the plurality of light-emitting units. For each light-emitting unit, the adjusting unit corresponding to the light-emitting unit is set to have corresponding transmittance so as to adjust the light emitted by each light-emitting unit. The embodiment of the application adjusts the light emitted by each light emitting unit easily by setting the transmittance of a plurality of adjusting units in the transmission adjusting layer, so that the light emitted by the light emitting units with different light emitting characteristics is adjusted to the light with expected light emitting characteristics after passing through the corresponding adjusting units. Particularly, the whole visual consistency can be improved by arranging the transmission adjusting layer, so that the whole display effect of the display device has consistency.

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

At present, LED (Light Emitting Diode) display screens are increasingly used indoors or outdoors. An LED display screen is a display screen that displays various information such as characters, graphics, animation, video, and video signals by controlling a semiconductor light emitting diode.

The light-emitting part of the LED display screen is formed by different transverse and vertical combination and arrangement of a plurality of LED light-emitting units. Due to individual differences of the LED light-emitting structures and the packages, the appearances and the light-emitting effects of the LED light-emitting units have certain differences, so that certain display differences can be seen after the LED light-emitting units are integrally bound in the LED display screen, and the display consistency is influenced. For example, the overall brightness of the LED display screen may be uneven, and pockmarks and mosaics may occur, which seriously affects the display effect of the LED display screen.

In order to improve the display effect of the display screen, consistency correction must be performed.

The prior LED display screen point-by-point correction technology comprises the following steps: the method comprises the steps of firstly shooting display of an LED display screen through a camera to obtain a display image of the LED display screen, then calculating a display error of the LED display screen according to the shot image, and finally correcting an LED single lamp of the LED display screen according to the calculated display error to obtain an expected display effect.

However, the point-by-point correction technique requires individual adjustment of the LED pixels one by one, which is a cumbersome process, difficult to implement, and correspondingly costly.

Disclosure of Invention

The present invention provides a display device to solve the technical problem that the light emitting characteristics of each light emitting unit in the current display device are difficult to adjust.

The invention adopts the following technical scheme for solving the technical problems: a display device, comprising: a display screen having a plurality of light emitting units; the transmission adjusting layer is arranged on the display screen, covers the plurality of light-emitting units and is used for allowing the light rays emitted by the plurality of light-emitting units to transmit through; wherein the transmission adjustment layer has a plurality of adjustment units corresponding to the plurality of light-emitting units; for each light-emitting unit, the adjusting unit corresponding to the light-emitting unit is set to have corresponding transmittance so as to adjust the light emitted by each light-emitting unit.

As a further improvement of the above technical solution, the transmission adjustment layer includes a translucent material layer, and the transmittance of each adjustment unit is determined by at least the transmittance of the translucent material layer.

As a further improvement of the above technical solution, the transmittance of the translucent material layer in each adjustment unit is determined by the thickness or structural form of the translucent material layer therein.

As a further improvement of the above technical solution, the transmittance of the translucent material layer in each adjustment unit is determined by the structural form of the translucent material layer therein, which includes a recess, a through hole or a lens provided on the translucent material layer.

As a further improvement of the above technical solution, the transmittance of the translucent material layer in each adjusting unit is determined by the structural form of the translucent material layer therein, and the structural form is further provided with a light scattering material; the transmittance of each adjusting unit is determined by the transmittance of the translucent material layer and the transmittance of the light scattering material.

As a further improvement of the above technical solution, the light scattering material is packaging glue dispersed with a light scattering agent; the transmittance of the light scattering material is higher than that of the corresponding translucent material layer or lower than that of the corresponding translucent material layer.

As a further improvement of the above technical solution, the display device further includes a surface transparent layer provided on the transmission adjustment layer.

As a further improvement of the above technical means, the transmission control layer has a light scattering agent dispersed therein; and/or, the surface transparent layer is dispersed with a light scattering agent.

As a further improvement of the above technical solution, the transparent adjustment layer is self-adhered to the display screen; or the transmission adjusting layer is adhered to the display screen through an adhesive layer.

As a further improvement of the above technical solution, a filling encapsulation layer is further provided between the transmission adjustment layer and the plurality of light emitting units.

As a further improvement of the above technical solution, the light scattering agent is dispersed in the filling encapsulation layer.

As a further improvement of the above technical solution, each light emitting unit is a red light emitting unit, a green light emitting unit, or a blue light emitting unit; alternatively, each of the light emitting units is composed of a red light emitting unit, a green light emitting unit, and a blue light emitting unit.

As a further improvement of the above technical solution, the plurality of adjustment units 21 of the transmission adjustment layer 20 adjust the emitted light of the corresponding light-emitting units 11 so that the light-emitting characteristics of the light emitted from the plurality of adjustment units 21 of the transmission adjustment layer 20 are uniform.

As a further improvement of the above technical solution, the display screen is an LED display screen, and further includes a driving circuit substrate and a driving IC, the plurality of light emitting units are disposed on a first side of the driving circuit substrate, and the driving IC is disposed on a second side of the driving circuit substrate opposite to the first side.

As a further improvement of the technical scheme, the display screen is formed by splicing at least two display modules.

The invention has the beneficial effects that: in the embodiment of the display device, the light emitted by each light-emitting unit is easily adjusted by setting the transmittance of the plurality of adjusting units in the transmission adjusting layer, so that the light emitted by the light-emitting units with different light-emitting characteristics is adjusted to be the light with expected light-emitting characteristics after passing through the corresponding adjusting units. Particularly, the light emitting and visual differences of different light emitting units can be compensated by arranging the transmission adjusting layer, so that the overall visual consistency is improved, and the overall display effect of the display device is consistent.

Drawings

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention, showing the display device having a transmissive adjustment layer;

FIG. 2 is a schematic diagram of a process for forming a tuning layer according to one embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a composite functional film layer provided in accordance with one embodiment of the present invention, showing a plurality of first lenses disposed on a layer of translucent material;

FIG. 4 is a schematic cross-sectional view of a composite functional film layer provided in accordance with one embodiment of the present invention, showing a plurality of second lenses disposed on the translucent material layer;

FIG. 5 is a schematic cross-sectional view of a composite functional film layer provided by one embodiment of the present invention showing a plurality of third lenses disposed on the translucent material layer;

FIG. 6 is a schematic cross-sectional view of a composite functional film layer according to one embodiment of the present invention, showing a light scattering material disposed in a through-hole through a translucent material layer in a tuning layer;

FIG. 7 is a cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing a light scattering material disposed between first lenses through a layer of translucent material in a tuning layer;

FIG. 8 is a schematic cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing a light scattering material disposed between second lenses through a layer of translucent material in a tuning layer;

FIG. 9 is a schematic cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing a light scattering material disposed between third lenses through a layer of translucent material in the adjustment layer;

FIG. 10 is a cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing light scattering material disposed on and between reduced thickness tuning elements through a layer of translucent material in a tuning layer;

FIG. 11 is a schematic cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing light scattering agents disposed in a transmission adjustment layer and a surface transparent layer;

FIG. 12 is a schematic cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing light scattering agents disposed in a surface transparent layer;

FIG. 13 is a schematic cross-sectional view of a composite functional film layer according to one embodiment of the present invention showing light scattering agents disposed in the transmission adjusting layer;

FIG. 14 is a schematic cross-sectional view of a display device according to one embodiment of the present invention, showing a display panel bonded to the display panel through an adhesive layer via a regulating layer;

fig. 15 is a schematic cross-sectional view of a display device according to an embodiment of the invention, which shows that the filling encapsulation layer is filled only between adjacent light emitting units;

fig. 16 is a schematic cross-sectional view of a display device according to an embodiment of the present invention, which shows that a filling encapsulation layer is filled between adjacent light emitting cells and also between a transmission adjustment layer and a plurality of light emitting cells;

FIG. 17 is a schematic cross-sectional view of a display device according to one embodiment of the invention, showing light scattering agents dispersed in the filled encapsulant layer;

FIG. 18 is a cross-sectional view of a display device according to an embodiment of the present invention, showing a filling layer disposed in a processing pattern through an adjustment layer;

fig. 19 is a schematic cross-sectional view of a display device according to an embodiment of the invention, which shows a display screen formed by splicing at least two display modules;

fig. 20 is a schematic cross-sectional view of a display device according to an embodiment of the invention, which shows a display screen formed by splicing at least two display modules and adhered by an adhesive layer through a regulating layer.

The reference numbers indicate: 100-display device, 10-display screen, 11-luminous unit, 12-drive circuit substrate, 13-drive IC, 14-display module, 20A-original material layer, 20-transmission adjusting layer, 21A,21B, 21C-adjusting unit, 22-semi-transparent material layer, 23-concave part, 24-through hole, 25A,25B, 25C-lens, 26-light scattering material, 27-light scattering agent, 30-surface transparent layer, 40-adhesive layer, 50-filling packaging layer and 60-filling layer.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

In this specification, the term "mounting" includes welding, screwing, clamping, adhering, etc. to fix or limit a certain element or device to a specific position or place, the element or device may be fixed or movable in a limited range in the specific position or place, and the element or device may or may not be dismounted after being fixed or limited to the specific position or place, and the embodiment of the present invention is not limited.

Referring to fig. 1, a cross-sectional view of a display device according to an embodiment of the invention is shown. The display device 100 may mainly include a display screen 10 and a transmission adjusting layer 20. The display screen 10 is a display screen capable of displaying various information such as text, graphics, animation, video signals, etc. when it is powered on, and may be, for example, an LED display screen or other display screen having a problem of display inconsistency. The transmission adjustment layer 20 may be attached to the display surface of the display screen 10.

Wherein the display screen 10 has a plurality of light emitting units 11. Each light emitting unit 11 may be a light emitting element in one pixel unit of the display screen 10, or may be a light emitting element in one sub-pixel unit of the display screen 10. For example, each light emitting unit 11 is a red light emitting unit, a green light emitting unit, or a blue light emitting unit; the red light-emitting unit corresponds to one R (red) sub-pixel, the green light-emitting unit corresponds to one G (green) sub-pixel, and the blue light-emitting unit corresponds to one B (blue) sub-pixel. Alternatively, each light emitting unit 11 may be composed of a red light emitting unit, a green light emitting unit, and a blue light emitting unit; therefore, the light emitting unit 11 can emit white light synthesized by three colors of yellow, green and blue.

For another example, when the display screen 10 is an LED display screen, each light-emitting unit 11 is a red light-emitting LED, a green light-emitting LED, or a blue light-emitting LED; the red light-emitting LED corresponds to one R sub-pixel, the green light-emitting LED corresponds to one G sub-pixel, and the blue light-emitting LED corresponds to one B sub-pixel. Alternatively, each light emitting unit 11 may be composed of a red light emitting LED, a green light emitting LED, and a blue light emitting LED; thus, the light emitting unit 11 can emit white light synthesized by three colors of yellow, green and blue.

In addition, the display panel 10 may further include a driving Circuit substrate 12 and a driving IC (Integrated Circuit Chip) 13, wherein the plurality of light emitting cells 11 are disposed on a first side of the driving Circuit substrate 12, and the driving IC 13 is disposed on a second side of the driving Circuit substrate 12 opposite to the first side. The driving Circuit substrate 12 may be a PCB (Printed Circuit Board) for mounting the plurality of light emitting units 11 and providing a driving Circuit; the driving IC 13 is configured to function to supply a compensation current to the plurality of light emitting cells 11. When the display screen 10 is an LED display screen, LEDs in the light emitting unit 11 may be bound and connected to pads on the driving circuit substrate 12 through binding pads at the bottom; the LED type light emitting unit 11 may be an SMD (Surface Mounted device) packaged light emitting diode device unit, an IMD (Integrated Mounted device) packaged light emitting diode device unit, or a light emitting diode device unit in a COB (Chip On Board) package structure. In one embodiment, the IMD LED device may be bonded to the driver circuit substrate 12 in the form of a PCB by solder paste. In addition, the surface of the light emitting unit 11 in the form of an LED is generally covered with a blackened encapsulation resin layer or a COB integrated package; due to the difference in resin encapsulation and the difference in light emitting efficiency of the chips, the luminance has a difference in brightness, etc., and the overall visual appearance of the display screen 10 is affected.

The transmission adjustment layer 20 is disposed on the display screen 10 and covers the plurality of light emitting units 11, and is used for transmitting light emitted by the plurality of light emitting units 11 therethrough.

The transmission adjustment layer 20 has a plurality of adjustment units 21 corresponding to the plurality of light emitting units 11, as shown by the dashed line in fig. 1; it is noted that these multiple adjustment units 21 may not need specific or visible structural boundaries, they may constitute an integral transparent adjustment layer 20, and the portion corresponding to the forward direction of each light-emitting unit 11 may be one adjustment unit 21. The adjusting means 21 corresponding to each light emitting unit 11 is provided to have a corresponding transmittance so as to adjust the light emitting characteristics, such as the brightness, of each light emitting unit 11. Since the transmittance of the light passing through the adjusting layer 20 can be set in various ways to achieve a desired transmittance, the light emitted from each light-emitting unit 11 can be easily adjusted by setting the transmittances of the plurality of adjusting units 21 in the adjusting layer 20, so that the light emitted from the light-emitting units 11 with different light-emitting characteristics passes through the corresponding adjusting units 21 and is then adjusted to light with a desired light-emitting characteristic. In particular, the plurality of adjustment units 21 of the transmissive adjustment layer 20 can adjust the light emitted from the corresponding light-emitting units 11 so that the light-emitting characteristics of the light emitted from the plurality of adjustment units 21 of the transmissive adjustment layer 20 are uniform; that is, the transmission adjustment layer 20 is provided to compensate for the differences in light emission and vision of the different light-emitting units 11, so as to improve the overall visual uniformity, and thus the overall display effect of the display device 100 is uniform.

The display device 100 may further include a surface transparent layer 30, the surface transparent layer 30 being disposed on the transmission adjustment layer 20. The surface transparent layer 30 may be a surface protection film layer, for example, a transparent organic resin layer such as PET (Polyethylene terephthalate), PC (Polycarbonate), PMMA (polymethyl methacrylate), or a transparent glass layer. The surface transparent layer 30 and the surface transparent layer 30 together may constitute a composite functional film layer.

In some embodiments, as shown in FIG. 2, a schematic process diagram of the transmission adjusting layer provided by one embodiment of the present invention is shown, specifically illustrating the change from the original material layer 20A to the transmission adjusting layer 20. The original material layer 20A may be a translucent coating, for example, a resin coating in which black pigment, filler, dye are dispersed, or may be a translucent plating layer. The transmission adjustment layer 20 may be formed by processing the raw material layer 20A; for example, the thickness of the translucent coating may be adjusted so that a plurality of the adjustment units 21A therein have a desired thickness; further, the structural form of the translucent coating layer may be adjusted so that a plurality of adjustment units 21B therein have different recesses 23; or so that a plurality of the regulating units 21C therein have different through holes 24. It is easily understood that by changing the thickness or structural configuration of the raw material layer 20A, the volume of the portion of the raw material layer 20A corresponding to each light emitting unit 11 is actually changed, so that different absorption amounts of light passing therethrough can be generated, and thus different transmittances can be realized. In addition, the recess 23 or the through hole 24 is also provided so that the

adjustment unit

21B or 21C has a different opening ratio. The change in thickness and the provision of the recess 23 or the through hole 24 can be achieved by removing a part of the colored layer by etching, for example, and different transmittances can be obtained. The etching process can be laser positioning etching process, and the material permeability is changed by adjusting the thickness of the fixed point area, forming different processing patterns, surface morphology and the like.

Referring to fig. 2, the transmission adjustment layer 20 may include only the translucent material layer 22, and the transmittance of each

adjustment unit

21A,21B, or 21C is determined by the transmittance of the translucent material layer 22 therein. For example, as for the adjustment unit 21A, the transmittance thereof is determined by the transmittance of the part of the translucent material layer 22 in the adjustment unit 21A. Further, by providing the concave portion 23 or the through hole 24, the transmittance of each

adjustment unit

21B or 21C is also determined by these structural forms.

It should be noted that although fig. 2 shows the

adjustment units

21A,21B, or 21C at the same time, this is only for illustrating the form of the adjustment units, and does not require that the

adjustment units

21A,21B, or 21C must be included in the same transmissive adjustment layer 20. For example, in a transmissive adjustment layer 20, it may only include a plurality of adjustment units 21A with different thicknesses. Of course, these

adjustment units

21A,21B or 21C may also be present in combination in the same transmissive adjustment layer 20. In addition, the transmission adjusting layer 20 in fig. 1 is only illustrated as a layer, and the adjusted processing pattern effect is not shown; the actual machining pattern effect can be referred to the translucent material layer 22 including the

adjustment unit

21A,21B or 21C shown in fig. 2.

In an exemplary manufacturing process, the transmission adjusting layer 20 may be formed on the surface transparent layer 30; that is, the original material layer 20A may be formed on the surface transparent layer 30, that is, the surface transparent layer 30 may be used as a substrate for transmitting the adjustment layer 20, and then the original material layer 20A is processed to change the transmittance of the material.

As shown in fig. 3 to 5, which illustrate the structural configuration of the lens passing through the adjustment layer according to some embodiments of the present invention. Wherein fig. 3 shows a plurality of first lenses 25A provided on the translucent material layer 22, the first lenses 25A each having a triangular prism shape such that a groove section between adjacent first lenses 25A has an inverted V shape; fig. 4 shows a plurality of second lenses 25B provided on the translucent material layer 22, the second lenses 25B each having two symmetrical concave surfaces such that the cross section of the groove between the adjacent second lenses 25B is an arc shape; fig. 5 shows a plurality of third lenses 25C provided on the translucent material layer 22, and these third lenses 25C each have two symmetrical stepped surfaces such that the cross section of the groove between the adjacent third lenses 25C is a symmetrical stepped shape. These lenses may also be referred to as lens-like lenses, and their microstructure morphology may enhance the light extraction angle. As shown in fig. 3 to 5, the translucent material layer 22 is formed on the surface transparent layer 30.

As shown in fig. 6-10, which illustrate light scattering materials provided in a transmission adjusting layer according to some embodiments of the present invention. Wherein fig. 6 shows a light scattering material 26 disposed in a through hole 24 through the translucent material layer 22 in the adjustment layer 20; fig. 7 shows the light scattering material 26 disposed between the first lenses 25A that are transmitted through the translucent material layer 22 in the adjustment layer 20; fig. 8 shows the light scattering material 26 disposed between the second lenses 25B which are transmitted through the translucent material layer 22 in the adjustment layer 20; fig. 9 shows the light scattering material 26 disposed between the third lenses 25C that are transmitted through the translucent material layer 22 in the adjustment layer 20; fig. 10 shows the light scattering material 26 provided on the adjustment unit 21A of reduced thickness that is transmitted through the translucent material layer 22 in the adjustment layer 20. In the embodiments shown in fig. 6 to 10, the various types of microstructures in the translucent material layer 22 are filled with the light scattering material 26; thus, in each adjustment unit 21, the transmissive adjustment layer 20 includes the translucent material layer 22 and the light scattering material 26 provided therein. Accordingly, the transmittance of each adjustment unit 21 is determined by the transmittance of the translucent material layer 22 therein and the transmittance of the light scattering material 26. The light scattering material 26 may increase the transmittance of the adjustment layer.

In some embodiments, the light scattering material 26 may be an encapsulating glue dispersed with light scattering agent 27; the light scattering material 26 may have a transmittance higher than the transmittance of the corresponding translucent material layer 22 or lower than the transmittance of the corresponding translucent material layer 22. The light scattering agent 27 may be organic polymer micro-nano particles. The light scattering material 26 may be transparent or translucent, and may have a higher transmittance than the translucent material layer 22, or may be lower than the translucent material layer 22; for example, when it is desired to increase the transmittance, the light scattering material 26 has a much higher transmittance than the translucent material layer 22; when it is desired to reduce the transmittance, the transmittance may be lower than that of the translucent material layer 22. The provision of the light scattering material 26 may be considered a refill process, since a single process etches away a portion of the space not necessarily to the full extent to achieve the desired effect, so that a refill process may be performed in that portion of the space.

In some embodiments, as shown in fig. 11-13, light scattering agents 27 provided in the transmissive adjustment layer 20 and/or the surface transparent layer 30 are illustrated, in some embodiments. Wherein fig. 11 shows that the light scattering agent 27 is dispersed in both the transmission adjusting layer 20 and the surface transparent layer 30; fig. 12 shows that the light scattering agent 27 is dispersed only in the surface transparent layer 30; fig. 13 shows that the light scattering agent 27 is dispersed only in the transmission adjusting layer 20. Likewise, the light scattering agent 27 may be organic polymer micro-nano particles. Note that the transmission adjustment layer 20 in fig. 11 to 13 is only illustrated as a layer, and the adjusted processing pattern effect is not shown; the actual machining pattern effect can be referred to the translucent material layer 22 including the

adjustment unit

21A,21B or 21C shown in fig. 2.

In some embodiments, as shown in FIG. 1, the transmission adjustment layer 20 is self-adhesive to, for example, an underlying structure of the display screen 10; that is, the transmission adjustment layer 20 may be provided to have self-adhesive properties so as to be attached to the display screen 10 by self-adhesion.

In other embodiments, as shown in fig. 14, the transmission adjustment layer 20 is adhered to the display screen 10 by an adhesive layer 40; the adhesive layer 40 may be a composite adhesive layer or a self-adhesive layer.

In some embodiments, as shown in fig. 15 and 16, a filling encapsulation layer 50 is further provided between the transmission adjustment layer 20 and the plurality of light emitting cells 11. Among them, fig. 15 shows that the filling encapsulation layer 50 is filled only between the adjacent light emitting cells 11 without exceeding the height of the light emitting cells 11; fig. 16 shows that the filling encapsulation layer 50 is filled between the adjacent light emitting cells 11 and also between the transmission adjustment layer 20 and the plurality of light emitting cells 11. The filling and sealing layer 50 may be a sealing glue layer or an adhesive layer, and is adhered to the composite functional film layer composed of the transparent adjustment layer 20 and the surface transparent layer 30 by an integral sealing, that is, the composite functional film layer, the filling and sealing layer 50, and the display screen 10, such as an LED display module, are integrally pressed together. Note that the transmission adjustment layer 20 in fig. 14 and 15 is only illustrated as a layer, and does not show the effect of the processing pattern after adjustment; the actual machining pattern effect can be referred to the translucent material layer 22 including the

adjustment unit

21A,21B or 21C shown in fig. 2.

Further, an adhesive layer may be disposed between the transmission adjustment layer 20 and the filling encapsulation layer 50, and the adhesive layer may be similar to the adhesive layer 40, and may be a composite adhesive layer or a self-adhesive layer.

In further embodiments, as shown in fig. 17, light scattering agent 27 is dispersed in the filled encapsulant layer 50. The light scattering agent 27 may be, for example, organic polymer micro-nano particles. As shown in fig. 17, the transmission adjustment layer 20 has a processing pattern such as a through hole 24 therein; thus, in this embodiment, the filling through the processing pattern in the adjustment layer 20 can be integrally completed by the filling encapsulation layer 50.

Alternatively, as shown in fig. 18, the filling layer 60 may be provided only in the processing pattern, for example, the through-holes 24 in the transmission adjusting layer 20, and the light scattering agent may be dispersed in the filling layer 60. The light scattering agent may be the aforementioned light scattering agent 27, and may be, for example, organic polymer micro-nano particles. Since there is a portion of the space removed by etching, this portion of the space can be filled with a filling layer 60, for example, an encapsulation glue, by means of inkjet printing.

In some embodiments, as shown in fig. 19, the display screen 10 may be formed by splicing at least two display modules 14; that is, the display modules 14 can be display screens with smaller sizes, so that the display screen 10 with larger size is spliced by a plurality of display screens with smaller sizes. Accordingly, a transparent adjusting layer 20 can be attached to the display screen 10 formed by splicing at least two display modules 14.

Further, as shown in fig. 20, the transmission adjustment layer 20 may be adhered to the display screen 10 formed by splicing at least two display modules 14 by an adhesive layer 40; the adhesive layer 40 may be a composite adhesive layer or a self-adhesive layer. Note that the transmission adjustment layer 20 in fig. 19 and 20 is only illustrated as a layer, and the adjusted processing pattern effect is not shown; the actual machining pattern effect can be referred to the translucent material layer 22 including the

adjustment unit

21A,21B or 21C shown in fig. 2.

It is noted that the display device 100 shown in fig. 14 to 18 may be similar to the display device 100 shown in fig. 1, and other parts not described are the same as the corresponding parts shown in fig. 1 except for the details described above with respect to fig. 14 to 18, and thus are not repeated herein.

The manufacturing method of the display device 100 in the above embodiments is briefly described as follows.

First, the display screen 10 is provided and energized to light up, and the optical parameters of each light emitting unit 11, such as an LED, are positionally scanned by the optical instrument.

For example, the HSL parameters of each light-emitting unit 11 can be measured in a color mode of HSL (i.e., hue, saturation, brightness).

Second, for a certain light emitting unit 11, an adjusted target value is determined.

After measuring the HSL parameters of each light-emitting unit 11, a weighted value can be calculated by each unit to obtain an appropriate adjusted value and a corresponding adjusted layer transmittance.

For example, assume that the determined adjusted target value is (0,255, 97); and, for the first light-emitting unit R1, the HSL parameter thereof was measured to be (0,255,128); for the second light-emitting unit R2, the HSL parameter is measured to be (0,255,100), and it can be seen that the brightness of R1 and R2 are both brighter; thus, the transmittance of the adjustment layers corresponding to R1 and R2 can be calculated and determined as 76% and 96%, respectively.

For example, the light scattering agent can be used to increase the transmittance of the adjustment layer for a dark light-emitting unit.

Note that the transmittance of the adjustment layer is used to adjust the light emission effect of the light-emitting unit 11, and is not limited to adjusting the luminance. The brightness of the light-emitting unit 11 is only a relatively distinct difference, but it is not unique.

Third, the original material layer 20A molded on the surface transparent layer 30 is provided, and the corresponding adjustment layer is processed to achieve the corresponding transmittance.

For example, the adjustment layers corresponding to R1 and R2 may be positioned and then processed to achieve a transmittance of 76% for the adjustment layer corresponding to R1 and 96% for the adjustment layer corresponding to R2.

Similarly, the transmittance of the adjustment layers corresponding to all the light-emitting units 11 that do not satisfy the adjusted target value may be set to achieve the desired parameters.

Fourthly, correspondingly attaching to achieve the final effect.

The transmission adjustment layer 20 processed to obtain a desired transmittance and the surface transparent layer 30 are correspondingly attached to the display screen 10 such that, for example, R1 corresponds to a portion of the transmission adjustment layer 20 having a transmittance of 76%, and, for example, R2 corresponds to another portion of the transmission adjustment layer 20 having a transmittance of 96%. It is easily understood that, due to the adjustment of the transmittance, the light ray with the brightness of 128 emitted from R1 is cut by 24 after passing through the corresponding transmission adjustment layer 20, and becomes about 97; the light beam with a luminance of 100 emitted from R2 was reduced by 4 to about 96 after passing through the corresponding transmissive adjustment layer 20. Thus, the clipped luminances 97 and 96 are both substantially equal to the adjusted target value 97.

In summary, it can be understood that, in the display device of the present application, the transmittance of the plurality of adjusting units 21 in the adjustment layer 20 is set, so that the emitted light of each light-emitting unit 11 can be easily adjusted, and the light emitted by the light-emitting units 11 with different light-emitting characteristics passes through the corresponding adjusting units 21, and then is adjusted to be the light with the desired light-emitting characteristics. Particularly, the transmission adjustment layer 20 is disposed to compensate for the differences between the light emission and the vision of the different light emitting units 11, so as to improve the overall vision consistency, and thus the overall display effect of the display device 100 is consistent; for example, the color development difference of the whole visual effect of each LED unit or module unit is reduced, the consistency of the appearance effect is achieved, and the consistency of the appearance display of the product is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A display device (100), comprising:

a display screen (10), the display screen (10) having a plurality of light emitting units (11); and

a transmission adjustment layer (20), wherein the transmission adjustment layer (20) is arranged on the display screen (10) and covers the plurality of light-emitting units (11) and is used for transmitting the light rays emitted by the plurality of light-emitting units (11);

wherein the transmission adjustment layer (20) has a plurality of adjustment units (21) corresponding to the plurality of light-emitting units (11); for each light-emitting unit (11), the adjusting unit (21) corresponding to the light-emitting unit is set to have corresponding transmittance so as to adjust the emitted light of each light-emitting unit (11).

2. The display device (100) of claim 1, wherein:

the transmission adjustment layer (20) comprises a semitransparent material layer (22), and the transmission rate of each adjustment unit (21) is determined by at least the transmission rate of the semitransparent material layer (22).

3. The display device (100) of claim 2, wherein:

the transmittance of the translucent material layer (22) in each adjustment unit (21) is determined by the thickness or the structural form of the translucent material layer (22) therein.

4. The display device (100) of claim 3, wherein:

the transmittance of the translucent material layer (22) in each adjustment unit (21) is determined by the structural form of the translucent material layer (22) therein, including the recesses (23), the through holes (24), or the lenses (25) provided on the translucent material layer (22).

5. The display device (100) of claim 3, wherein:

the transmittance of the semitransparent material layer (22) in each adjusting unit (21) is determined by the structural form of the semitransparent material layer (22), and a light scattering material (26) is further arranged on the structural form; the transmittance of each adjusting unit (21) is determined by the transmittance of the translucent material layer (22) and the transmittance of the light scattering material (26).

6. The display device (100) of claim 5, wherein:

the light scattering material (26) is packaging glue dispersed with a light scattering agent;

the light scattering material (26) has a transmittance higher than that of the corresponding translucent material layer (22) or lower than that of the corresponding translucent material layer (22).

7. The display device (100) of claim 1, wherein:

the display device (100) further includes a surface transparent layer (30), the surface transparent layer (30) being provided on the transmission adjustment layer (20).

8. The display device (100) of claim 7, wherein:

the light scattering agent is dispersed in the transmission adjusting layer (20); and/or

The surface transparent layer (30) has light scattering agent dispersed therein.

9. The display device (100) of claim 1, wherein:

the transmission adjusting layer (20) is self-adhered to the display screen (10); or alternatively

The permeation adjusting layer (20) is bonded on the display screen (10) through an adhesive layer (40).

10. The display device (100) of claim 1, wherein:

a filling packaging layer (50) is arranged between the transmission adjusting layer (20) and the plurality of light-emitting units (11).

11. The display device (100) of claim 10, wherein:

the light scattering agent is dispersed in the filling and packaging layer (50).

12. The display device (100) of claim 1, wherein:

each light-emitting unit (11) is a red light-emitting unit, a green light-emitting unit or a blue light-emitting unit; or

Each light emitting unit (11) is composed of a red light emitting unit, a green light emitting unit, and a blue light emitting unit.

13. The display device (100) of claim 1, wherein:

the plurality of adjusting units (21) of the transmission adjusting layer (20) adjust the light emitted by the corresponding light emitting units (11), so that the light emitting characteristics of the light emitted from the plurality of adjusting units (21) of the transmission adjusting layer (20) are consistent.

14. The display device (100) according to any one of claims 1 to 13, wherein:

the display screen (10) is an LED display screen, and further comprises a driving circuit substrate (12) and a driving IC (13), wherein the plurality of light-emitting units (11) are arranged on a first side of the driving circuit substrate (12), and the driving IC (13) is arranged on a second side, opposite to the first side, of the driving circuit substrate (12).

15. The display device (100) according to any one of claims 1 to 13, wherein:

the display screen (10) is formed by splicing at least two display modules (14).