CN110459581B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN110459581B CN110459581B CN201910790099.2A CN201910790099A CN110459581B CN 110459581 B CN110459581 B CN 110459581B CN 201910790099 A CN201910790099 A CN 201910790099A CN 110459581 B CN110459581 B CN 110459581B
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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 distributed in an array mode, each filter unit is blocked by a light blocking unit, the filter units are divided into a basic filter unit and an adjusting type filter unit, the adjusting type filter unit comprises a first basic filter layer and a second basic filter layer which are arranged in a stacking mode in the thickness direction of the adjusting type filter unit, and at least one layer of light filter layer is arranged between the first basic filter layer and the second basic filter layer, wherein the refractive index of the second basic filter layer is the same as that of the first basic filter layer, and the refractive index of the light filter layer is smaller than that of the first basic filter layer. According to the embodiment of the invention, the phenomenon of color cast of the display picture under a large visual angle can be improved.
Description
Technical Field
The invention relates to the field of display, in particular to a display panel and a display device.
Background
Display panels such as Organic Light Emitting Diode (OLED) Display panels and Liquid Crystal Display (LCD) panels have the advantages of high image quality, power saving, thin body, and wide application range, and are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of Display panels.
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
Embodiments of the present invention provide a display panel and a display device, which can improve the color cast of a display image under a large viewing angle.
In a first aspect, an embodiment of the present invention provides a display panel, including a light emitting device layer and a color filter layer;
the light emitting device layer comprises 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 light filtering units which are distributed in an array mode, each light filtering unit is blocked by each light blocking unit, the light filtering units are divided into a basic light filtering unit and an adjusting type light filtering unit, the adjusting type light filtering units comprise a first basic light filtering layer and a second basic light filtering layer which are arranged in a stacking mode in the thickness direction of the adjusting type light filtering units, and at least one layer of light filtering layer is arranged between the first basic light filtering layer and the second basic light filtering layer, wherein the refractive index of the second basic light filtering layer is the same as that of the first basic light filtering layer, and the refractive index of the light filtering layer is smaller than that of the first basic light filtering layer.
According to an aspect of an embodiment of the present invention, an orthographic projection portion of the light blocking unit on the light emitting device layer covers an orthographic projection of the corresponding basic filtering unit on the light emitting device layer; and/or the orthographic projection part of the light blocking unit on the light-emitting device layer covers the orthographic projection of the first basic filter layer on the light-emitting device layer in the corresponding adjusting type filter unit.
According to an aspect of the embodiments of the present invention, the orthographic projection of the filtering unit on the light emitting device layer covers the orthographic projection of the corresponding light blocking unit on the light emitting device layer.
According to an aspect of an embodiment of the present invention, the light filter layer in the adjustment type filter unit completely covers the first base filter layer arrangement, and the second base filter layer completely covers the light filter layer arrangement.
According to an aspect of the embodiment of the invention, the light filtering layer is a transparent adhesive layer to reduce the exit angle of the light of the corresponding light emitting unit.
According to an aspect of the embodiment of the present invention, the display panel further includes an encapsulation layer disposed between the light emitting device layer and the color filter layer.
According to one aspect of an embodiment of the invention, the refractive index of the encapsulation layer is the same as the basic filtering unit.
According to an aspect of the embodiment of the invention, the display panel further includes a planarization layer, and the planarization layer covers the color filter layer.
According to an aspect of the embodiments of the present invention, the light emitting device layer includes at least three primary color light emitting devices, and the color filter layer includes at least three primary color filter units disposed in one-to-one correspondence with the at least three primary color light emitting devices, wherein the primary color filter unit corresponding to at least one of the primary color light emitting devices is an adjustment type filter unit.
In a second aspect, an embodiment of the present invention provides a display device, including the display panel according to the first aspect.
According to the display panel provided by the embodiment of the invention, the color filter layer of the display panel comprises a plurality of filter units, the plurality of filter units are provided with the adjusting type filter units, the adjusting type filter units comprise the first basic filter layer, at least one layer of light filter layer and the second basic filter layer, and the refractive index of the light filter layer is smaller than that of the first basic filter layer and the second basic filter layer. Under the large visual angle, the light emitted by each luminescent device corresponding to the adjusting type filtering sheet can sequentially pass through the first basic filtering layer, the at least one layer of light filtering layer and the second basic filtering layer and then is emitted out, because the refractive index of the light filtering layer is smaller than that of the first basic filtering layer and the second basic filtering layer, according to the characteristic that the light is incident into the optically thinner medium from the optically denser medium, part of the light can be totally reflected when entering the light filtering layer, so that the light output quantity of the light emitted by each luminescent device corresponding to the adjusting type filtering sheet 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 further improved, and the display quality of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the area A-A of the display panel shown in FIG. 1 according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view illustrating a-a region of the display panel shown in fig. 1 according to another embodiment of the present invention.
Description of reference numerals:
100-a display panel;
01-sub-pixel region; 01 a-initial sub-pixel; 01 b-light-adjusting sub-pixels;
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; 42-a red filter unit; 43-green filter unit; 44-a blue filter unit;
441-a first base filter layer; 442-a light filtering layer; 443-a second base filter layer;
50-a planar layer;
l1-blue light; L2-Green light.
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.
Referring to fig. 1, the display panel of the embodiment of the invention has a plurality of sub-pixel regions 01 distributed in an array, the plurality of sub-pixel regions 01 are divided into initial sub-pixels 01a and light-adjusting sub-pixels 01b, and a predetermined number of light-adjusting sub-pixels 01b are distributed in the plurality of initial sub-pixels 01a according to a predetermined distribution mode. The light adjustment sub-pixel 01b in this embodiment corresponds to a sub-pixel causing color shift under a large viewing angle, and the sub-pixels are improved to avoid the color shift problem.
Features and exemplary embodiments of various aspects of the present invention are described below with respect to a display screen that is blue at large viewing angles, i.e., a blue subpixel is the light-adjusting subpixel 01b, it being understood that the following embodiments are equally applicable to a display panel that is red, green, violet, and other color shifts at large viewing angles.
As shown in fig. 2, a display panel 100 according to an embodiment of the present invention includes a light emitting device layer 20 and a color filter layer 40. 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 distributed in an array, each of the filter units is blocked by the light blocking unit 41, and the filter units are divided into a basic filter unit and an adjusting filter unit, wherein the basic filter unit (in fig. 2, the red filter unit 42 and the green filter unit 43) is disposed corresponding to the light-emitting devices (in fig. 2, the red light-emitting device 21 and the green light-emitting device 22) of the initial sub-pixel 01a, and the adjusting filter unit (in fig. 2, the blue filter unit 44) is disposed corresponding to the light-emitting device (in fig. 2, the blue light-emitting device 23) of the light-adjusting sub-pixel 01 b.
It should be noted that the basic filter unit according to the embodiment of the present invention is a filter unit including only one basic filter layer, where the basic filter layer may be an optical filter. The adjusting type filtering unit comprises a first basic filtering layer and a second basic filtering layer which are arranged in a stacking mode in the thickness direction of the adjusting type filtering unit, and at least one layer of light filtering layer arranged between the first basic filtering layer and the second basic filtering layer, wherein the refractive indexes of the second basic filtering layer and the first basic filtering layer are the same as those of the basic filtering unit, and the refractive indexes of the light filtering layers are smaller than those of the basic filtering unit. Specifically, the second base filter layer and the first base filter layer in each adjustment type filter unit may be filters of the same color.
Referring to fig. 2, the blue filter unit 44 includes a first base filter layer 441 and a second base filter layer 443 stacked in a thickness direction thereof, and at least one light filter layer 442 disposed between the first base filter layer 441 and the second base filter layer 443, wherein refractive indexes of the second base filter layer 443 and the first base filter layer 441 are the same, and a refractive index of the light filter layer 442 is smaller than that of the first base filter layer 441.
Specifically, the red filter unit 42 and the green filter unit 43 are a red filter and a green filter, respectively, and the first base filter layer 441 and the second base filter layer 443 are a blue filter, respectively.
Referring to fig. 2, taking the blue filter unit 44 with a light filter layer 442 as an example, light emitted from the blue filter unit 44 at a large viewing angle is blue light L1, and when the blue light L1 propagates through the blue filter unit 44, the blue light L passes through the first basic filter layer 441, the light filter layer 442, and the second basic filter layer 443 in sequence, and since the refractive index of the light filter layer 442 is smaller than those of the first basic filter layer 441 and the second basic filter layer 442, according to the characteristic of light incident from the optically dense medium to the optically sparse medium, a part of the blue light L1 with a large incident angle may be totally reflected when entering the light filter layer 442 from the first basic filter layer 441, so that the blue filter unit 44 can absorb the blue light L1 at the large viewing angle and attenuate the light output of the blue light L1. In addition, the light emitted from the green filter unit 43 is the green light L2, and at a large viewing angle, the green light L2 directly exits through the green filter unit 43 without attenuating the light output of 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 blue at a large viewing angle, the blue filter unit 44 can attenuate the light output amount of the blue light L1, and reduce the blue light intensity corresponding to the blue light L1, and the red filter unit 42 and the green filter unit 43 do not attenuate the light output amount of the light image emitted by the blue filter unit, so that the proportion of different lights at the large viewing angle can be adjusted, the phenomenon of color cast at the large viewing angle is improved, and the display quality of the display panel is improved. Similarly, for the phenomenon that the display image is red or green under a large viewing angle, the red sub-pixel or the green sub-pixel may be used as the light adjustment sub-pixel 01b, and the filter unit corresponding to the red sub-pixel or the green sub-pixel is set as the adjustment filter unit, 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. 2, the display panel 100 according to the embodiment of the invention further includes an array substrate 10 located 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 at least three primary light emitting devices. Specifically, referring to fig. 2, 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 at least three primary color filter units disposed in one-to-one correspondence with at least three primary color light emitting device colors, and specifically, the color filter layer 40 includes a plurality of red filter units 42, a plurality of green filter units 43, and a plurality of blue filter units 44, the red filter units 42 being disposed in correspondence with the red light emitting devices 21, the green filter units 43 being disposed in correspondence with the green light emitting devices 22, and the blue filter units 44 being disposed in correspondence with the blue light emitting devices 23.
Among the at least three primary color filtering units, the primary color filtering unit corresponding to at least one primary color light emitting device may be determined to be an adjustable filtering unit according to the color shift of the display panel 100. For example, if the display panel is purple at a large viewing angle, the red filter unit 42 and the blue filter unit 44 are required as adjustment type filter units.
With continued reference to fig. 2, 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. Specifically, the opening area of the side of the opening region facing the color filter layer 40 is larger than the opening area of the side of the opening region facing away from the color filter layer 40.
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 also be a white light emitting device layer, for example, one red filter unit 42 for one white light emitting device, one green filter unit 43 for one white light emitting device, and one blue filter unit 44 for one white light emitting device. At this time, one red filter unit 42, one green filter unit 43, and one blue filter unit 44 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. 2, 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.
Preferably, the refractive index of the encapsulation layer is the same as that of the basic filtering unit, so that other influences on the display effect of the display panel 100 caused by the encapsulation layer can be avoided.
In some embodiments, please continue to refer to fig. 2, 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, with reference to fig. 2, the display panel 100 further includes a planarization layer 50, and the planarization layer 50 covers the color filter layer 40 and is located on a side of the color filter layer 40 away from the light-emitting device layer 20. The planarization layer 50 may be made of an organic material, such as Cardo resin, polyimide resin, or acrylic resin.
In some embodiments, with continuing reference to fig. 2, the orthographic projection of the red filter unit 42 on the light emitting device layer 20 covers the orthographic projection of the light blocking unit 41 surrounding the red filter unit 42 on the light emitting device layer 20, the orthographic projection of the green filter unit 43 on the light emitting device layer 20 covers the orthographic projection of the light blocking unit 41 surrounding the green filter unit 43 on the light emitting device layer 20, and the orthographic projection of the blue filter unit 44 on the light emitting device layer 20 covers the orthographic projection of the light blocking unit 41 surrounding the blue filter unit 44 on the light emitting device layer 20. Since the orthographic projection of the filter unit on the light emitting device layer 20 covers the orthographic projection of the corresponding light blocking unit 41 on the light emitting device layer 20, the display panel 100 can be prevented from light leakage.
With reference to fig. 2, the light filtering layer 442 in the blue filtering unit 44 is disposed to completely cover the first basic filtering layer 441, that is, the light filtering layer 442 completely covers the surface of the first basic filtering layer 441 exposing the portion of the light blocking unit 41 away from the light emitting device layer 20 and the sidewall of the portion of the first basic filtering layer 441 exposing the light blocking unit 41, and the second basic filtering layer 443 completely covers the surface of the light filtering layer 442 away from the light emitting device layer 20. Because the light filtering layer in the adjusting type filtering unit completely covers the first basic filtering layer, the light outlet quantity of the adjusting type filtering unit can be further reduced, and the color cast phenomenon is further reduced.
In some embodiments, the light filtering layer is a transparent adhesive layer to reduce the exit angle of the light of the corresponding light emitting unit. Specifically, the transparent adhesive layer may be made of an organic adhesive made of a transparent material, so that the light filtering layer does not affect the wavelength band of the emergent light of the adjustable light filtering unit. The organic glue may be polymethyl methacrylate 1.48, partial silicon-based glass 1.5, Teflon 1.35, etc.
In other embodiments, with reference to fig. 3, the front projection portion of the light blocking unit 41 surrounding the red filter unit 42 on the light emitting device layer 20 covers the front projection of the red filter unit 42 on the light emitting device layer 20, the front projection portion of the light blocking unit 41 surrounding the green filter unit 43 on the light emitting device layer 20 covers the front projection of the green filter unit 43 on the light emitting device layer 20, and the front projection portion of the light blocking unit 41 surrounding the blue filter unit 44 on the light emitting device layer 20 covers the front projection of the first base filter layer 441 of the blue filter unit 44 on the light emitting device layer 20. Since the orthographic projection of the light blocking unit 41 on the light emitting device layer 20 covers the orthographic projection of the corresponding base filter unit on the light emitting device layer 20, and the orthographic projection of the light blocking unit 41 on the light emitting device layer 20 covers the orthographic projection of the first base filter layer 441 in the corresponding adjustment type filter unit on the light emitting device layer 20, the display panel 100 can be prevented from being cross-colored.
In other embodiments, only the orthographic projection of the light blocking unit on the light emitting device layer may cover the orthographic projection of the corresponding basic filter unit on the light emitting device layer, or only the orthographic projection of the light blocking unit on the light emitting device layer covers the orthographic projection of the first basic filter layer in the corresponding adjustment type filter unit on the light emitting device layer, which is not described herein again.
In the above embodiments and views, the blue sub-pixel is taken as the light adjusting sub-pixel 01b, and the structure of the adjusting filter unit corresponding to the light adjusting sub-pixel 01b is described. Those skilled in the art can set the red sub-pixel and the green sub-pixel as the light adjustment sub-pixel 01b according to actual needs, and set the structure of the adjustment filter unit 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 (9)
1. A display panel, comprising:
a light emitting device layer comprising a plurality of light emitting devices arranged in an array, the plurality of light emitting devices comprising at least three primary color light emitting devices;
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 distributed in an array manner, the filter units are blocked by light blocking units, the filter units are divided into a basic filter unit and an adjustable filter unit,
the adjusting type filtering unit comprises a first basic filtering layer and a second basic filtering layer which are arranged in a stacking mode in the thickness direction of the adjusting type filtering unit, and at least one layer of optical filtering layer arranged between the first basic filtering layer and the second basic filtering layer, wherein the refractive index of the second basic filtering layer is the same as that of the first basic filtering layer, and the refractive index of the optical filtering layer is smaller than that of the first basic filtering layer,
the color filter layer comprises at least three primary color filtering units which are arranged in one-to-one correspondence with the colors of the at least three primary color light-emitting devices, wherein the primary color filtering unit corresponding to at least one primary color light-emitting device is the adjusting type filtering unit.
2. The display panel according to claim 1, wherein an orthographic projection portion of the light blocking unit on the light emitting device layer covers an orthographic projection of the corresponding base filter unit on the light emitting device layer; and/or
The orthographic projection part of the light blocking unit on the light-emitting device layer covers the orthographic projection of the first basic filter layer on the light-emitting device layer in the corresponding adjusting type filter unit.
3. The display panel according to claim 1, wherein an orthographic projection of the filter unit on the light emitting device layer covers an orthographic projection of the corresponding light blocking unit on the light emitting device layer.
4. The display panel of claim 3, wherein the light filter layer in the adaptive filter unit completely covers the first base filter layer arrangement and the second base filter layer completely covers the light filter layer arrangement.
5. The display panel according to claim 1, wherein the light filter layer is a transparent adhesive layer to reduce an exit angle of light rays of the corresponding light emitting device.
6. The display panel according to claim 1, further comprising:
and the packaging layer is arranged between the light-emitting device layer and the color filter layer.
7. The display panel of claim 6, wherein the refractive index of the encapsulation layer is the same as the basic filtering unit.
8. The display panel according to claim 1, further comprising:
and the flat layer covers the color filter layer.
9. A display device characterized by comprising a display panel according to claims 1-8.
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| US11374063B2 (en) | 2019-12-20 | 2022-06-28 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel with color filter layer and anti-reflection film layer and manufacturing method thereof |
| CN111129092A (en) * | 2019-12-20 | 2020-05-08 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN112164710B (en) * | 2020-09-25 | 2022-04-26 | 武汉华星光电半导体显示技术有限公司 | OLED array substrate and display panel |
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