CN110473900B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN110473900B CN110473900B CN201910795772.1A CN201910795772A CN110473900B CN 110473900 B CN110473900 B CN 110473900B CN 201910795772 A CN201910795772 A CN 201910795772A CN 110473900 B CN110473900 B CN 110473900B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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Abstract
The invention discloses a display panel and a display device. The display panel includes: a light emitting device layer including a plurality of light emitting devices arranged in an array; the color filter layer is arranged on the light emitting side of the light emitting device layer and comprises a plurality of filter units which are arranged corresponding to the light emitting devices, the adjacent filter units are isolated through the light blocking units, and each filter unit comprises a plurality of initial filter units and a plurality of adjusting filter units; and the light filtering layer is arranged on one side of the color filtering layer opposite to the light-emitting device layer and comprises a plurality of light filtering units which are arranged corresponding to the plurality of adjusting type light filtering units, and the light filtering units are configured to absorb the wave band light emitted by the primary color light filtering units corresponding to the adjusting type sub-pixels. According to the display panel provided by the embodiment of the invention, the phenomenon of color cast of a display picture under a large viewing angle can be improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of display technology, the display panel manufacturing technology also tends to mature. The conventional Display panel mainly includes an Organic Light Emitting Diode (OLED) Display panel and a Liquid Crystal Display (LCD) panel. The OLED display panel has the advantages of self-luminescence, low power consumption, fast response speed, wide viewing angle, and the like, and is widely applied to the display field.
However, in the current display panel, the color effect of the picture is poor under a large viewing angle, and a color cast phenomenon is easy to occur, which seriously affects the display effect of the display panel under the large viewing angle.
Therefore, it is desirable to provide a display panel that effectively improves the color shift that easily occurs at a large viewing angle.
Disclosure of Invention
The invention provides a display panel and a display device, wherein the display panel can improve the phenomenon of color cast under a large visual angle.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a light emitting device layer including a plurality of light emitting devices arranged in an array;
the color filter layer is arranged on the light emitting side of the light emitting device layer and comprises a plurality of filter units which are arranged corresponding to the light emitting devices, adjacent filter units are isolated through a light blocking unit, and the filter units comprise a plurality of initial filter units and a plurality of adjusting filter units;
and the light filtering layer is arranged on one side of the color filtering layer opposite to the light-emitting device layer and comprises a plurality of light filtering units which are arranged corresponding to the plurality of adjusting type light filtering units, and the light filtering units are configured to absorb the wave band light emitted by the primary color light filtering units corresponding to the adjusting type sub-pixels.
According to an aspect of the embodiment of the invention, the light filtering unit includes a transparent body and a light blocking agent distributed in the transparent body, and the light blocking agent absorbs the band light emitted from the adjustable light filtering unit.
On one hand, the light blocking agent can absorb the wave band light emitted by the adjusting type filtering unit, and on the other hand, the light filtering unit is transparent on the whole and has no influence on the light of other wave bands.
According to an aspect of an embodiment of the present invention, the light blocking agent includes an organic dye and/or an inorganic metal nanomaterial.
The organic dye and/or the inorganic metal nano material has a good absorption effect on the wave band light emitted by the adjusting type light filtering unit, and the phenomenon of large visual angle color cast is further improved.
According to an aspect of the embodiment of the invention, the light filtering unit includes a transparent body and a light conversion material distributed in the transparent body, and the light conversion material converts the wavelength band light emitted from the adjusting type light filtering unit into other wavelength band light.
The light filter unit is provided with the light conversion material, so that the waveband light emitted by the adjustable filter unit is converted into light with other wavebands, the light output quantity of the light with other wavebands under a large visual angle is increased, and the phenomenon of color cast under the large visual angle is further improved.
According to an aspect of the embodiment of the present invention, the thickness of the light filter layer gradually increases in a direction from the center of the display panel to the outer circumferential side of the display panel.
The thickness of the light filter layer is gradually increased from the center of the display panel to the outer periphery of the display panel, so that the proportion of light at different viewing angles can be adjusted, and the color cast phenomenon at different viewing angles is improved.
According to an aspect of an embodiment of the present invention, the light filtering unit is located at a side of the light blocking unit adjacent to the adjustment type filtering unit facing away from the light emitting device layer;
the light filtering unit completely covers the light blocking unit, or the light filtering unit partially covers the light blocking unit and is close to the adjustment type filter unit.
The light filtering unit is arranged to completely cover the light blocking unit, so that the process is easy to realize; the light filtering unit is arranged to partially cover the light blocking unit and is close to the adjusting type light filtering unit, so that materials can be saved, the wave band light emitted by the adjusting type light filtering unit under a large visual angle is not influenced, and the function of other wave band light under the large visual angle is achieved.
According to an aspect of an embodiment of the present invention, the adjustment type filter unit is a blue filter unit, and the light filter unit is configured to absorb blue light and transmit red and/or green light;
preferably, the light blocking agent comprises one or more of azobenzene high molecular compounds, porphyrin high molecular compounds, titanium dioxide nano materials and cerium dioxide nano materials;
or the adjusting type filtering unit is a red filtering unit, and the light filtering unit is configured to absorb red light and transmit blue and/or green light;
preferably, the light blocking agent comprises one or more of phthalocyanine high molecular compounds, ammonium sulfite high molecular compounds and copper-containing inorganic metal nano materials;
or the adjusting type filtering unit is a green filtering unit, and the light filtering unit is configured to absorb green light and transmit blue and/or red light;
preferably, the light blocking agent comprises a squarylium cyanine-based high molecular compound.
By adding different light blocking agents into the light filtering unit, the color cast phenomenon of different colors under a large visual angle can be improved.
According to an aspect of an embodiment of the present invention, the display panel further includes:
the array substrate is arranged on one side, back to the color filter layer, of the light-emitting device layer;
and the packaging layer is arranged between the light-emitting device layer and the color filter layer and used for sealing the light-emitting device layer.
The array substrate is used for driving the light-emitting device layer to emit light, and the packaging layer is used for protecting the light-emitting devices in the light-emitting device layer from being invaded by external water and oxygen.
According to an aspect of an embodiment of the present invention, scattering particles are distributed in at least a part of the initial-type filtering unit;
and/or the surface of one side of the adjusting type filter unit, which faces away from the light-emitting device layer, is a surface protruding towards the direction facing away from the light-emitting device layer.
The scattering particles are arranged in the initial type filtering unit, so that the light emitting area of the initial type filtering unit can be increased, the light emitting quantity of the initial type filtering unit under a large visual angle is increased, and the phenomenon of color cast of the large visual angle is improved. In addition, the surface of the side, facing away from the light-emitting device layer, of the adjusting type filtering unit is arranged to be a surface protruding towards the direction facing away from the light-emitting device layer, so that the adjusting type filtering unit forms a light condensing structure, when light rays are emitted outwards from the convex surface under a large visual angle, the light rays deviate from an original path and are converged towards the direction vertical to the display panel, the light emitting quantity of the color light rays under the large visual angle can be reduced, and the phenomenon of color cast of the large visual angle is further improved.
In a second aspect, an embodiment of the present invention provides a display device, which includes the display panel according to any one of the first aspect.
According to the display panel provided by the embodiment of the invention, the display panel comprises the light-emitting device layer, the color filter layer and the light filter layer, wherein the light filter layer comprises a plurality of light filter units which are arranged corresponding to the plurality of adjustment type light filter units. Under the large visual angle, the light emitted by each adjusting type filtering unit can pass through the light filtering unit and then be emitted, the wave band light emitted by the adjusting type filtering unit under the large visual angle can be filtered through the light filtering unit, and the other wave band light under the large visual angle can be transmitted, so that the light emitting quantity of the wave band light emitted by the adjusting type filtering unit under the large visual angle is reduced, the proportion of different lights under the large visual angle is adjusted, the phenomenon of color cast under the large visual angle is improved, and the display quality of the display panel is improved.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 illustrates a schematic cross-sectional structure of a display panel according to a first embodiment of the present invention;
fig. 2 is a schematic cross-sectional view illustrating a display panel according to a second embodiment of the present invention;
fig. 3 is a schematic cross-sectional view illustrating a display panel according to a third embodiment of the present invention;
fig. 4 is a schematic cross-sectional view illustrating a display panel according to a fourth embodiment of the present invention.
Description of reference numerals:
100-a display panel;
10-an array substrate;
20-a light emitting device layer; 21-a red light emitting device; 22-green light emitting device; 23-a blue light emitting device; 24-a pixel defining layer;
30-an encapsulation layer;
40-a color filter layer; 41-light blocking unit; 421-red filter unit; 422-green filter unit; 423-blue light filtering unit;
50-a light filtering layer; 51-a light filtering unit;
l1-blue light; l2-green light; l11-original path; l12 — actual path.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting 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 present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
For the current OLED display panel, in the practical application process, the brightness of light rays with different colors has different degrees of attenuation along with the increase of the viewing angle, so that the color shift phenomenon occurs in a display picture emitting light normally under a normal viewing angle under a large viewing angle. For example, the luminance of the red light and the green light attenuates faster as the viewing angle increases, and the luminance of the blue light attenuates slower as the viewing angle increases, so that the light output of the blue light is larger under a large viewing angle of the display screen, and the proportion of the blue light is larger, thereby causing the display screen to be bluish under the large viewing angle. Or, the OLED light emitting device itself may have a reddish, greenish or purplish display screen at a large viewing angle due to the material, microcavity effect or other reasons.
The invention provides a display panel and a display device, aiming at the phenomenon that a display picture has color cast under a large visual angle. Features and exemplary embodiments of various aspects of the present invention will be described in detail below. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
For example, the display panels produced on the production line may be periodically detected to determine whether there is a color shift phenomenon at a large viewing angle in the produced display panels and which color shift exists, and then the next batch of display panels may be produced according to the structure of the display panels provided by the embodiment of the present invention.
For example, the filter unit that needs to adjust the light output amount at a large viewing angle is an adjustment type filter unit. In the following embodiments, features and exemplary embodiments of various aspects of the present invention are described taking an example in which a display screen is biased to blue at a large viewing angle, that is, a blue filter unit is an adjustment type filter unit, and it should be understood that the following embodiments are also applicable to cases in which a display panel is biased to red, green, and other color shifts at a large viewing angle.
As shown in fig. 1, a display panel 100 according to an embodiment of the present invention includes a light emitting device layer 20, a color filter layer 40, and a light filtering layer 50. The light emitting device layer 20 includes a plurality of light emitting devices arranged in an array. The color filter layer 40 is disposed on the light emitting side of the light emitting device layer 20, the color filter layer 40 includes a plurality of filter units disposed corresponding to the plurality of light emitting devices, each adjacent filter unit is isolated by a light blocking unit 41, and the plurality of filter units includes a plurality of initial type filter units and a plurality of adjustment type filter units. The light filtering layer 50 is disposed on a side of the color filter layer 40 opposite to the light emitting device layer 20, and includes a plurality of light filtering units 51 disposed corresponding to the plurality of adjusting type light filtering units (i.e., blue light filtering units 423), and the light filtering units 51 are configured to absorb light (i.e., blue light) in a wavelength band emitted from the adjusting type light filtering units.
Referring to fig. 1, at a large viewing angle, the wavelength band light emitted from the blue filter unit 423 is blue light L1, the blue light L1 passes through the light filter unit 51, and the light filter unit 51 can absorb the blue light L1 at the large viewing angle. In addition, the wavelength band light emitted from the green filter unit 422 is, for example, green light L2, and at a large viewing angle, the green light L2 will pass through the light filter unit 51 first, and the light filter unit 51 can directly transmit the green light L2.
According to the display panel 100 provided by the embodiment of the invention, for the phenomenon that the display picture is bluish under a large viewing angle, the light emitted by each blue filter unit 423 passes through the light filter unit 51 and then is emitted, the blue light L1 emitted by the blue filter unit 423 under the large viewing angle can be filtered by the light filter unit 51, and the light of the blue light L1 under the large viewing angle can be reduced by the light of other wave bands under the large viewing angle, the proportion of different lights under the large viewing angle can be adjusted, so that the phenomenon of color deviation under the large viewing angle can be improved, and the display quality of the display panel can be improved. Similarly, for the phenomenon that the display image is red or green under a large viewing angle, the red filter 421 or the green filter 422 is an adjustable filter, and the light filter 51 is arranged corresponding to the red filter 421 or the green filter 422, so as to improve the phenomenon that the display image is red or green under a large viewing angle.
In some embodiments, referring to fig. 1, a display panel 100 according to an embodiment of the present invention further includes an array substrate 10 disposed on a side of the light emitting device layer 20 opposite to the color filter layer 40. The array substrate 10 includes a substrate and a thin film transistor (not shown) on the substrate, and the substrate may be a flexible substrate such as polyimide or a rigid substrate such as glass. The thin film transistor is used for driving the corresponding light emitting device to emit light. Illustratively, the thin film transistor includes an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source electrode and a drain electrode, the source electrode and the drain electrode being electrically connected to the active layer through via holes located on the gate insulating layer and the interlayer insulating layer. The above description is given by way of example of a top gate structure array substrate, however, it will be understood by those skilled in the art that the solution of the present invention can also be applied to a bottom gate structure array substrate. Those skilled in the art can design the top gate structure or the bottom gate structure according to actual needs, and the position of the active layer is provided, which is not described herein again.
In some embodiments, the light emitting device in the light emitting device layer 20 includes an upper electrode, a light emitting layer and a lower electrode (not shown in the figure) which are stacked, and the upper electrode is disposed on a side of the light emitting layer facing away from the array substrate 10. The light emitting device is an organic light emitting device, and the light emitting layer is an organic light emitting layer where holes and electrons injected through the lower electrode and the upper electrode are combined with each other to emit light. Illustratively, the light emitting layer may be an organic light emitting layer and may further include at least one of common layers including a hole injection layer, a hole transport layer, a hole blocking layer, an electron transport layer, and an electron injection layer. However, the present embodiment is not limited thereto. For example, the light emitting layer may be an organic light emitting layer and may also include a common layer that performs various other functions.
In some embodiments, the light emitting device layer 20 includes a plurality of light emitting devices. Specifically, referring to fig. 1, the light emitting device layer 20 includes a plurality of red light emitting devices 21, a plurality of green light emitting devices 22, and a plurality of blue light emitting devices 23. The color filter layer 40 includes a plurality of filter units. Specifically, the color filter layer 40 includes a plurality of red filter units 421, a plurality of green filter units 422, and a plurality of blue filter units 423. Each filter unit is provided corresponding to a light emitting device of a corresponding color, that is, the red filter unit 421 is provided corresponding to the red light emitting device 21, the green filter unit 422 is provided corresponding to the green light emitting device 22, and the blue filter unit 423 is provided corresponding to the blue light emitting device 23.
With continued reference to fig. 1, the light emitting device layer 20 further includes a pixel defining layer 24, and a patterned pixel defining layer 24 may be formed on the array substrate 10, where the pixel defining layer 24 includes a plurality of opening regions, and a plurality of light emitting devices are located in each opening region.
The arrangement of the light emitting devices is not limited in the present application. For example, one red light emitting device 21, one green light emitting device 22, and one blue light emitting device 23 may be used as a repeating unit, and a plurality of repeating units may be repeatedly arranged at a predetermined rule on the array substrate to form the light emitting device layer 20. The repeating units may also include other combinations to provide a higher resolution of the display panel.
In other embodiments, the light emitting device layer 20 may be a white light emitting device layer, for example, one red filter unit 421 corresponding to one white light emitting device, one green filter unit 422 corresponding to one white light emitting device, and one blue filter unit 423 corresponding to one white light emitting device. At this time, one red filter unit 421, one green filter unit 422, and one blue filter unit 423 may be used as a repeating unit, and a plurality of repeating units may be repeatedly arranged on the encapsulation layer 30 at a predetermined rule. The repeating units may also include other combinations to provide a higher resolution of the display panel.
In some embodiments, with reference to fig. 1, the display panel 100 further includes an encapsulation layer 30 disposed between the light emitting device layer 20 and the color filter layer 40 for sealing the light emitting device layer 20. The encapsulation layer 30 may be a thin film encapsulation layer, and specifically, the encapsulation layer 30 includes a plurality of inorganic layers and organic layers (not shown in the figure) alternately stacked. For example, the encapsulation layer 30 includes at least two inorganic layers and at least one organic layer, one layer of the encapsulation layer 30 close to the array substrate 10 is the inorganic layer, one layer of the encapsulation layer 30 far away from the array substrate 10 is also the inorganic layer, and the organic layer is between the two inorganic layers. The inorganic layer may be formed by Chemical Vapor Deposition (CVD), and the organic layer may be formed by Ink Jet Printing (IJP). Illustratively, the encapsulation layer 30 includes two inorganic layers and an organic layer disposed in a stacked arrangement with the organic layer disposed between the two inorganic layers. The material of the inorganic layer is preferably silicon nitride with a good water and oxygen blocking effect, but is not limited to silicon nitride; the material of the organic layer includes one or a combination of several of polyvinyl alcohol, urethane acrylate polymer, and polyimide resin, but the present invention is not limited thereto.
In some embodiments, please continue to refer to fig. 1, the light blocking unit 41 may be a Black Matrix (BM). Illustratively, the light blocking unit 41 may be formed on a surface of the encapsulation layer 30 on a side facing away from the light emitting device layer 20 by means of film pasting, photolithography, laser processing, inkjet printing, 3D printing, screen printing, micro-contact printing, or the like. The light blocking unit 41 may block and absorb light to prevent crosstalk between the primary color filter units.
In some embodiments, the light filtering unit 51 includes a transparent body and a light blocking agent distributed in the transparent body, and the light blocking agent absorbs the wavelength band light emitted from the tunable light filtering unit. Illustratively, the light filtering unit 51 may be formed on a surface of the light blocking unit 41 on a side facing away from the light emitting device layer 20 by inkjet printing, 3D printing, screen printing, spin coating, film coating, photolithography, laser processing, micro-contact printing, or the like. The transparent body can be an organic film, and the material of the transparent body can be a resin material, a plastic material and the like. Further, the ratio of the transparent body to the light blocking agent in the light filtering unit 51 can be adjusted according to the degree of color cast, so as to adjust the absorption capability of the light in the wavelength band emitted by the adjustable filtering unit.
On the one hand, the light blocking agent can absorb the light in the wavelength band emitted from the adjustment type filter unit, and on the other hand, the light filter unit 51 is transparent as a whole and has no influence on the light in other wavelength bands.
In some embodiments, the light blocker includes an organic dye and/or an inorganic metallic nanomaterial.
The organic dye and/or the inorganic metal nano material has a good absorption effect on the wave band light emitted by the adjusting type light filtering unit, and the phenomenon of large visual angle color cast is further improved.
For example, referring to fig. 1, the blue filter 423 is an adjustment filter for a blue-shifted display image under a large viewing angle, and the light filter 51 is configured to absorb blue light and transmit red and/or green light. Preferably, the light blocking agent comprises one or more of azobenzene high molecular compounds, porphyrin high molecular compounds, titanium dioxide nano materials and cerium dioxide nano materials.
Or, for the phenomenon that the display screen is reddish under a large viewing angle, the red filter unit 421 is an adjustment type filter unit, and the light filter unit 51 is disposed on a side of the light blocking unit surrounding the red filter unit 421, the side facing away from the light emitting device layer, and at this time, the light filter unit 51 is configured to absorb red light and transmit blue and/or green light. Preferably, the light blocking agent comprises one or more of phthalocyanine high molecular compounds, iminium high molecular compounds and copper-containing inorganic metal nano materials.
Or, for the phenomenon that the display screen is reddish under a large viewing angle, the green filter unit 422 is an adjustment type filter unit, and the light filter unit 51 is disposed on a side of the light blocking unit surrounding the green filter unit 422, the side facing away from the light emitting device layer, at this time, the light filter unit 51 is configured to absorb green light and transmit blue and/or red light. Preferably, the light blocking agent comprises a squarylium cyanine-based high molecular compound.
By adding different light-blocking agents to the light filtering unit 51, the color shift phenomenon of different colors at a large viewing angle can be improved.
In some embodiments, with continuing reference to fig. 1, the light filtering unit 51 is located at a side of the light blocking unit 41 adjacent to the blue filtering unit 423 facing away from the light emitting device layer 20, and the light filtering unit 51 completely covers the light blocking unit 41. Alternatively, referring to fig. 2, the light filtering unit 51 is located at a side of the light blocking unit 41 adjacent to the blue filtering unit 423, which faces away from the light emitting device layer 20, and the light filtering unit 51 partially covers the light blocking unit 41 and is close to the blue filtering unit 423.
The light filtering unit 51 is disposed to completely cover the light blocking unit 41, which is relatively easy to be technically implemented; the light filtering unit 51 is arranged to partially cover the light blocking unit 41 and is close to the adjusting type filtering unit, so that materials can be saved, the function of filtering out the wave band light emitted by the adjusting type filtering unit under a large visual angle and passing the other wave band light under the large visual angle is not influenced.
In some embodiments, referring to fig. 3, the thickness of the light filter layer 50 gradually increases from the center of the display panel 100 to the outer circumference of the display panel 100. Illustratively, the thickness of the light filtering unit 51 may be 0.5 μm to 2 μm. The thickness of the light filtering unit 51 may be set to other values according to actual needs.
In other embodiments, the thickness of the light filter layer 50 may be kept uniform in a direction from the center of the display panel 100 toward the outer circumferential side of the display panel 100, and the distribution density of the light blocking agent in the light filter layer 50 may be gradually increased.
The thickness of the light filter layer 50 or the distribution density of the light blocking agent in the light filter layer 50 is set to be gradually increased from the center of the display panel 100 to the outer periphery of the display panel 100, so that the proportion of light at different viewing angles can be adjusted, and the color cast phenomenon at different viewing angles can be improved.
In some embodiments, the light filtering unit 51 includes a transparent body and a light conversion material distributed in the transparent body, and the light conversion material converts the light in the wavelength band emitted from the adjustment type filtering unit into light in other wavelength bands. For example, for a phenomenon that a display screen is bluish under a large viewing angle, a red light conversion material and/or a green light conversion material may be distributed in the light filtering unit 51, and the red light conversion material and/or the green light conversion material may convert blue light emitted from the blue filtering unit 423 into red light and/or green light.
The light filter unit 51 is provided with a light conversion material, and the light in the wavelength band emitted by the adjustment type filter unit is converted into light in other wavelength bands, so that the light output quantity of the light in other wavelength bands under a large viewing angle is increased, and the phenomenon of color cast under the large viewing angle is further improved.
In some embodiments, the thickness of the light filter layer 50 may be kept uniform in a direction from the center of the display panel 100 toward the outer circumferential side of the display panel 100, and the distribution density of the light conversion material in the light filter layer 50 gradually increases.
The distribution density of the light conversion material in the light filter layer 50 is set to be gradually increased from the center of the display panel 100 to the outer peripheral side of the display panel 100, so that the proportion of light at different viewing angles can be adjusted, and the color shift phenomenon at different viewing angles can be improved.
In some embodiments, scattering particles are distributed in at least a portion of the primary filter element. For example, for a phenomenon that a display screen is blue at a large viewing angle, the red filter unit 421 and the green filter unit 422 are initial filter units, and scattering particles may be disposed at least in part of the red filter unit 421 and/or at least in part of the green filter unit 422 to increase a light emitting area of red light and/or green light. The scattering particles are arranged in the initial type filtering unit, so that the light emitting area of the initial type filtering unit can be increased, the light emitting quantity of the initial type filtering unit under a large visual angle is increased, and the phenomenon of color cast of the large visual angle is improved.
In some embodiments, the surface of the side of the adjustment type filter unit facing away from the light emitting device layer 20 is a surface protruding toward the direction facing away from the light emitting device layer 20. Referring to fig. 4, for the phenomenon that the display screen is bluish under a large viewing angle, the surface of the blue filter unit 423 on the side away from the light emitting device layer 20 is set to be a convex surface facing away from the light emitting device layer 20, so that the blue filter unit 423 forms a light condensing structure. When the blue light rays are emitted from the convex surface at a large viewing angle, the blue light rays deviate from the original path L11 and are emitted along the actual path L12, that is, the blue light rays are gathered towards the direction perpendicular to the display panel by the blue filtering unit 423 with the convex surface structure, so that the light emitting amount of the blue light rays at the large viewing angle can be reduced, and the phenomenon that the large viewing angle is blue can be further relieved or eliminated.
In the above embodiments and views, the blue filter 423 is taken as an example of an adjustable filter, and the structure of the light filter 51 corresponding to the blue filter 423 is described with respect to the phenomenon that the display screen is bluish under a large viewing angle. Those skilled in the art can set the red filter unit 421 and the green filter unit 422 as the adjustment type filter unit according to actual needs, and set the structure of the light filter unit 51 according to the above description, which is not described herein again.
The embodiment of the invention also provides a display device, which comprises the display panel 100, and the display device can be applied to any product or component with a display function, such as a virtual reality device, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a wearable watch, an internet of things node, and the like. Since the principle of the display device to solve the problem is similar to the display panel 100, the display device can be implemented by referring to the implementation of the display panel 100, and repeated descriptions are omitted.
In accordance with the above-described embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. 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 embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (12)
1. A display panel, comprising:
a light emitting device layer including a plurality of light emitting devices arranged in an array;
the color filter layer is arranged on the light emitting side of the light emitting device layer and comprises a plurality of filter units which are arranged corresponding to the plurality of light emitting devices, the adjacent filter units are isolated by a light blocking unit, and the filter units comprise a plurality of initial filter units and a plurality of adjusting filter units;
the light filtering layer is arranged on one side, back to the light-emitting device layer, of the color filtering layer and comprises a plurality of light filtering units which are arranged corresponding to the plurality of adjusting type light filtering units, and the light filtering units are configured to absorb the wave band light emitted by the adjusting type light filtering units;
wherein the thickness of the light filter layer gradually increases in a direction from the center of the display panel toward the outer peripheral side of the display panel.
2. The display panel of claim 1, wherein the light filter unit comprises a transparent body and a light blocking agent distributed in the transparent body, and the light blocking agent absorbs the wavelength band light emitted from the adjusting filter unit.
3. The display panel according to claim 2, wherein the light blocking agent comprises an organic dye and/or an inorganic metal nanomaterial.
4. The display panel of claim 1, wherein the light filter unit comprises a transparent body and a light conversion material distributed in the transparent body, and the light conversion material converts the light in the wavelength band emitted from the adjusting filter unit into light in other wavelength bands.
5. The display panel according to claim 1, wherein the light filtering unit is located at a side of the light blocking unit adjacent to the adjustment type filter unit facing away from the light emitting device layer;
the light filtering unit completely covers the light blocking unit, or the light filtering unit partially covers the light blocking unit and is close to the adjusting type light filtering unit.
6. The display panel of claim 2, wherein the adjusting filter unit is a blue filter unit configured to absorb blue light and transmit red and/or green light;
or, the adjusting filter unit is a red filter unit, and the light filter unit is configured to absorb red light and transmit blue and/or green light;
or, the adjusting type filtering unit is a green filtering unit, and the light filtering unit is configured to absorb green light and transmit blue and/or red light.
7. The display panel of claim 6, wherein in the case that the adjusting type filter unit is a blue filter unit configured to absorb blue light and transmit red and/or green light, the light blocking agent comprises one or more of azobenzene-based polymer compound, porphyrin-based polymer compound, titanium dioxide nanomaterial, and cerium dioxide nanomaterial.
8. The display panel according to claim 6, wherein in the case where the adjustment type filter unit is a red filter unit configured to absorb red light and transmit blue and/or green light, the light blocking agent comprises one or more of a phthalocyanine-based polymer compound, an iminium-based polymer compound, and a copper-containing inorganic metal nanomaterial.
9. The display panel according to claim 6, wherein in a case where the adjustment type filter unit is a green filter unit configured to absorb green light and transmit blue and/or red light, the light blocking agent comprises a squaraine-based polymer compound.
10. The display panel according to any one of claims 1 to 9, characterized by further comprising:
the array substrate is arranged on one side, back to the color filter layer, of the light-emitting device layer;
and the packaging layer is arranged between the light-emitting device layer and the color filter layer and used for sealing the light-emitting device layer.
11. The display panel according to any of claims 1 to 9, wherein scattering particles are distributed in at least a part of the initial type filter unit;
and/or the surface of one side of the adjusting type filter unit, which faces away from the light-emitting device layer, is a surface protruding towards the direction facing away from the light-emitting device layer.
12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653681A (en) * | 2020-02-28 | 2020-09-11 | 京东方科技集团股份有限公司 | Optical Spacers and Display Panels |
| CN112233563B (en) * | 2020-11-09 | 2023-07-14 | 湖北长江新型显示产业创新中心有限公司 | Display panel and display device |
| CN112649990B (en) * | 2020-12-23 | 2022-04-08 | 武汉华星光电技术有限公司 | Display device and terminal equipment |
| CN112635694A (en) | 2021-01-18 | 2021-04-09 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN114156322B (en) * | 2021-11-29 | 2024-07-16 | 湖北长江新型显示产业创新中心有限公司 | Display panel, manufacturing method thereof and display device |
| WO2023201561A1 (en) * | 2022-04-20 | 2023-10-26 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN115132795A (en) * | 2022-06-21 | 2022-09-30 | 合肥维信诺科技有限公司 | Display panel and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104508853A (en) * | 2012-09-26 | 2015-04-08 | 索尼公司 | Display unit and electronic apparatus |
| CN104821327A (en) * | 2014-02-04 | 2015-08-05 | 索尼公司 | Display device and electronic apparatus |
| CN108428722A (en) * | 2018-03-20 | 2018-08-21 | 京东方科技集团股份有限公司 | A kind of organic light emitting display panel and preparation method thereof |
| CN108807472A (en) * | 2018-05-30 | 2018-11-13 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
| CN108899354A (en) * | 2018-07-27 | 2018-11-27 | 京东方科技集团股份有限公司 | OLED display panel and display device |
| CN109390374A (en) * | 2017-08-08 | 2019-02-26 | 三星显示有限公司 | Color conversion device and display device including the color conversion device |
| CN109873024A (en) * | 2019-04-09 | 2019-06-11 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof, and display device |
| CN109979982A (en) * | 2019-03-29 | 2019-07-05 | 京东方科技集团股份有限公司 | Organic light emitting display panel and preparation method, display device |
-
2019
- 2019-08-27 CN CN201910795772.1A patent/CN110473900B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104508853A (en) * | 2012-09-26 | 2015-04-08 | 索尼公司 | Display unit and electronic apparatus |
| CN104821327A (en) * | 2014-02-04 | 2015-08-05 | 索尼公司 | Display device and electronic apparatus |
| CN109390374A (en) * | 2017-08-08 | 2019-02-26 | 三星显示有限公司 | Color conversion device and display device including the color conversion device |
| CN108428722A (en) * | 2018-03-20 | 2018-08-21 | 京东方科技集团股份有限公司 | A kind of organic light emitting display panel and preparation method thereof |
| CN108807472A (en) * | 2018-05-30 | 2018-11-13 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
| CN108899354A (en) * | 2018-07-27 | 2018-11-27 | 京东方科技集团股份有限公司 | OLED display panel and display device |
| CN109979982A (en) * | 2019-03-29 | 2019-07-05 | 京东方科技集团股份有限公司 | Organic light emitting display panel and preparation method, display device |
| CN109873024A (en) * | 2019-04-09 | 2019-06-11 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof, and display device |
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|---|---|
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