CN114566516A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN114566516A CN114566516A CN202210193592.8A CN202210193592A CN114566516A CN 114566516 A CN114566516 A CN 114566516A CN 202210193592 A CN202210193592 A CN 202210193592A CN 114566516 A CN114566516 A CN 114566516A
- Authority
- CN
- China
- Prior art keywords
- emitting unit
- light
- light source
- array substrate
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005284 excitation Effects 0.000 claims abstract description 91
- 239000000758 substrate Substances 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 239000010410 layer Substances 0.000 description 52
- 238000010586 diagram Methods 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 15
- 239000002096 quantum dot Substances 0.000 description 14
- 230000004907 flux Effects 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 8
- 239000004642 Polyimide Substances 0.000 description 4
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- -1 i.e. Substances 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Led Device Packages (AREA)
Abstract
The application provides a display panel and a display device, wherein the display panel comprises an array substrate and a light-emitting element layer, the light-emitting element layer is formed on the array substrate and comprises a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the area of the green light-emitting unit and the area of the blue light-emitting unit are smaller than the area of the red light-emitting unit; the red light-emitting unit comprises an excitation light source arranged on the array substrate and a photoinduced display module arranged on one side, away from the array substrate, of the excitation light source, the orthographic projection of the photoinduced display module on the array substrate is at least partially overlapped with the orthographic projection of the excitation light source on the array substrate, and the photoinduced display module emits red light under the excitation of the excitation light source; the green light emitting unit comprises a green light source arranged on the array substrate, and the blue light emitting unit comprises a blue light source arranged on the array substrate. The display panel provided by the application improves the display effect.
Description
Technical Field
The application relates to the field of display equipment, in particular to a display panel and a display device.
Background
Light Emitting Diodes (LEDs) have the advantages of low cost, high lighting efficiency, energy conservation, environmental protection, and the like, and are widely used in lighting, visible light communication, light emitting display, and other scenes.
Micro light emitting diodes (Micro-LEDs) are an array of Micro-scale pitches formed by miniaturizing conventional LEDs to achieve ultra-high resolution, and thus can be used in the display field. Compared with the traditional Liquid Crystal Display (LCD) and Organic Light Emitting Display (OLED), the Micro-LED display has the advantages of long light emitting life, high brightness, light and thin volume, low power consumption and the like, and becomes a representative of third generation display which is mainly characterized by high reality, interaction and personalized display.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, so that the display effect of the display panel is improved.
In a first aspect, an embodiment of the present application provides a display panel, including:
an array substrate;
the light-emitting element layer is formed on the array substrate and comprises a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the area of the green light-emitting unit and the area of the blue light-emitting unit are smaller than that of the red light-emitting unit;
the red light-emitting unit comprises an excitation light source arranged on the array substrate and a photoinduced display module arranged on one side, away from the array substrate, of the excitation light source, the orthographic projection of the photoinduced display module on the array substrate is at least partially overlapped with the orthographic projection of the excitation light source on the array substrate, and the photoinduced display module emits red light under the excitation of the excitation light source;
the green light emitting unit comprises a green light source arranged on the array substrate, and the blue light emitting unit comprises a blue light source arranged on the array substrate.
In a second aspect, an embodiment of the present application provides a display device, including the display panel described above.
In the display panel that this application embodiment provided, the area of green luminescence unit and the area of blue luminescence unit all are less than red luminescence unit's area, and adopt excitation light source and photoinduced display module's form to produce ruddiness to solve the light source material luminous efficacy of general red light low, luminance is not enough, leads to the problem that display screen white light deviates blue. In addition, the green light emitting unit and the blue light emitting unit directly emit light by the green light source and the blue light source, and compared with a structure of a blue chip and a quantum dot conversion layer in the prior art, the color gamut is increased, and the fineness of a display picture is further improved. Specifically, in the prior art, the green light is obtained by exciting the quantum dot conversion layer with the blue light, but the quantum dot conversion layer cannot convert the blue light by one hundred percent, so the obtained green light is inevitably doped with the blue light, the green light is impure, the color saturation is low, the monochromaticity is insufficient, and the finally formed color gamut is smaller. In summary, the display panel provided by the embodiment of the application improves the display effect.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present application will be described below by referring to the accompanying drawings.
FIG. 1 is a spectrum diagram of a prior art display panel using direct light emission from a red chip, a green chip, and a blue chip;
FIG. 2 is a spectrum diagram of a prior art display panel employing a blue chip and a quantum dot conversion layer to emit light;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 4 is a spectrum diagram formed by a red light emitting unit, a green light emitting unit and a blue light emitting unit of a display panel provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of another display panel provided in an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present application;
FIG. 8 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 9 is a schematic diagram of another structure of a display panel according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present application.
Reference numerals:
1. an array substrate;
2. a light-emitting element layer;
21. a red light emitting unit; 211. an excitation light source; 212. a light-induced display module; 213. a red light source; 22. a green light emitting unit; 221. a green light source; 23. a blue light emitting unit; 231. a blue light source; 23. a first planarizing layer; 24. a second planarizing layer;
3. a black matrix layer;
31. a first opening; 32. a second opening; 33. a third opening;
4. an opposing substrate;
5. an array light-shielding layer;
6. an opposite light-shielding layer;
7. a display device.
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.
In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The following description is given with the directional terms as they are used in the drawings and not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.
Fig. 1 is a spectrum diagram of a prior art display panel directly emitting light using a red chip, a green chip, and a blue chip, and fig. 2 is a spectrum diagram of a prior art display panel emitting light using a blue chip and a quantum dot conversion layer.
The inventor has noted that at present, Micro-LEDs mainly adopt two light emitting structures, one is direct light emission from red, green and blue chips, as shown in fig. 1, which sequentially represents the relationship between the wavelength and the relative radiant flux of blue, green and red light from left to right.
The other is a structure of a blue chip and a quantum dot conversion layer, namely red light and green light are respectively generated by exciting a red light quantum dot layer and a green light quantum dot layer through blue light, and the relationship between the wavelength and the relative radiant flux of the blue light, the green light and the red light is represented sequentially from left to right as shown in fig. 2.
The color points and the color gamut values respectively formed by using the above two structures are shown in table 1 below,
TABLE 1
| Scheme(s) | Rx | Ry | Gx | Gy | Bx | By | Wx | Wy | NTSC(1931) |
| R(Chip)+G(Chip)+B(Chip) | 0.693 | 0.306 | 0.202 | 0.738 | 0.140 | 0.044 | 0.184 | 0.319 | 116.2％ |
| B(R-QD)+B(G-QD)+B Chip | 0.648 | 0.293 | 0.173 | 0.638 | 0.147 | 0.032 | 0.294 | 0.315 | 93.8％ |
Wherein, R (chip) + G (chip) + B (chip) represents a display panel directly emitting light by three color chips (red chip, blue chip, green chip) in the prior art, and B (R-QD) + B (G-QD) + BChip represents a display panel in the prior art in which a quantum dot conversion layer is excited by a blue chip to form red light and green light. In the 1931CIE-XYZ system, Wx of the standard white light is 0.295, Wy is 0.315, and as can be seen from the table contents, in the first structure, Wx of the white light formed after mixing is 0.184, Wy is 0.184, Wx is small, and the value of 1-Wx-Wy is large, and the white light is biased to blue, so that there are problems that the luminance of red light is insufficient, and the white light is biased to blue.
The NTSC represents the color gamut, the standard value of the NTSC is 100%, and the larger the NTSC exceeds 100%, the larger the NTSC represents the color gamut, and the better the display effect is. In the second configuration, the color gamut is only 93.8% and less than 100%, so there is a problem that the color gamut is small.
Based on the above consideration, the inventor has conducted intensive research and has designed a display panel to improve the display effect and increase the color gamut on the premise of ensuring the brightness of red light in the display panel.
For a better understanding of the present application, embodiments of the present application are described below with reference to fig. 3 to 10.
Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure.
Referring to fig. 3, a display panel according to an embodiment of the present disclosure includes an array substrate 1 and a light emitting device layer 2, the light emitting device layer 2 is formed on the array substrate 1, the light emitting device layer 2 includes a red light emitting unit 21, a green light emitting unit 22, and a blue light emitting unit 23, and an area of the green light emitting unit 22 and an area of the blue light emitting unit 23 are smaller than an area of the red light emitting unit 21.
The red light emitting unit 21 includes an excitation light source 211 disposed on the array substrate 1 and a photo-induced display module 212 disposed on a side of the excitation light source 211 departing from the array substrate 1, a front projection of the photo-induced display module 212 on the array substrate 1 and a front projection of the excitation light source 211 on the array substrate 1 are at least partially overlapped, and the photo-induced display module 212 emits red light under excitation of the excitation light source 211.
The green light emitting unit 22 includes a green light source 221 disposed on the array substrate 1, and the blue light emitting unit 23 includes a blue light source 231 disposed on the array substrate 1.
Optionally, the photo-induced display module 212 is a red quantum dot conversion layer. Of course, other photoluminescent materials, i.e., materials emitting red light under excitation of the excitation light source 211, may be used, and the present application is not limited thereto. By using the red quantum dot conversion layer as the photoluminescent display module 212, red light with a smaller starting spectrum range can be obtained, i.e., the red light is doped with other color lights in a smaller proportion, so that the color saturation and monochromaticity of the red light are ensured.
Alternatively, the excitation light source 211 is a light source that emits light with a wavelength shorter than that of red light, and may be a light source that emits blue light, for example. Of course, other light sources emitting light with a wavelength smaller than that of red light, such as light sources emitting green light, may be used, and the present application is not limited thereto.
In the above, the orthographic projection of the photo-induced display module 212 on the array substrate 1 and the orthographic projection of the excitation light source 211 on the array substrate 1 at least partially overlap, which means that the orthographic projection of the photo-induced display module 212 on the array substrate 1 and the orthographic projection of the excitation light source 211 on the array substrate 1 may partially overlap or completely overlap.
In the display panel provided by the embodiment of the application, the area of the green light-emitting unit 22 and the area of the blue light-emitting unit 23 are both smaller than the area of the red light-emitting unit 21, and the excitation light source 211 is adopted to excite the photo-induced display module 212 to generate red light, so as to solve the problems that the light source material of general red light has low light-emitting efficiency and insufficient brightness, and white light is blue. In addition, the green light emitting unit 22 and the blue light emitting unit 23 are directly emitted by the green light source 221 and the blue light source 231, which improves the color gamut displayed by the display panel and further improves the smoothness of the display screen compared with the second light emitting structure in the prior art. Specifically, in the prior art, the green light is obtained by exciting the quantum dot conversion layer with the blue light, but since the quantum dot conversion layer cannot convert the blue light by one hundred percent, the obtained green light is necessarily doped with the blue light, as shown in fig. 2, the light-emitting spectrum range of the green light is large, the blue light is doped, the color saturation is low, the monochromaticity is insufficient, and the finally formed color gamut is small, but the green light source 221 directly emits the light in the embodiment of the present application, so that the color gamut is improved.
It should be noted that, the area of the green light-emitting unit 22 and the area of the blue light-emitting unit 23 are both smaller than the area of the red light-emitting unit 21, so as to avoid the problem that the luminance of red light is still insufficient due to the fact that the photoluminescent display module 212 cannot convert all the light emitted by the excitation light source 211 into red light, and increase the area of the red light-emitting unit 21, thereby ensuring the luminance of red light.
In some optional embodiments, the red light emitting unit 21 further includes a red light source 213 disposed on the array substrate 1.
The red light emitting unit 21 further includes a red light source 213, and the red light source 213 directly emits light, that is, the red light emitting unit 21 includes an excitation light source 211 and a photo-display module 212 which are oppositely disposed, and a red light source 213 which directly emits light, and a light emitted by the red light emitting unit 211 includes a red light directly emitted by the red light source 213 and a red light emitted by the excitation light source 211 exciting the photo-display module 212, and a light emitted by the light emitting element layer 2 includes a red light directly emitted by the red light source 213, a green light emitted by the green light source 221, and a blue light emitted by the blue light source 231, so that color saturation of each color light is ensured, and a color gamut formed thereby is large.
Fig. 4 is a spectrum diagram formed by a red light emitting unit, a green light emitting unit and a blue light emitting unit of a display panel according to an embodiment of the present disclosure.
Referring to fig. 4, the relationship between the wavelength and the relative radiant flux of blue, green and red light is represented sequentially from left to right. Wherein R is1Representative of the relationship between the wavelength and the relative radiant flux of red light, R, generated by the excitation of the light-induced display module 212 by the excitation light source 2112Representative is the wavelength of red light directly produced by the red light source 213 versus the relative radiant flux, R0Representative is the relationship between the wavelength and the relative radiant flux of the red light generated by the red light-emitting unit 21. Therefore, the relative radiant flux generated by the red light-emitting unit 21 is close to the relative radiant flux generated by the green light-emitting unit 22 and even exceeds the relative radiant flux generated by the green light-emitting unit 22, so that the red light brightness is greatly improved, and the standard of white light is ensured.
Table 2 shows the color point and gamut values produced by the two prior art solutions and the light-emitting element layer 2 of the present application.
TABLE 2
| Scheme(s) | Rx | Ry | Gx | Gy | Bx | By | Wx | Wy | NTSC(1931) |
| R(Chip)+G(Chip)+B(Chip) | 0.693 | 0.306 | 0.202 | 0.738 | 0.140 | 0.044 | 0.184 | 0.319 | 116.2％ |
| B(R-QD)+B(G-QD)+B Chip | 0.648 | 0.293 | 0.173 | 0.638 | 0.147 | 0.032 | 0.294 | 0.315 | 93.8％ |
| R(Chip)+R(B+RQD)+G(Chip)+B(Chip) | 0.652 | 0.294 | 0.202 | 0.738 | 0.140 | 0.044 | 0.296 | 0.313 | 107.4％ |
In the above table, R (chip) + R (B + RQD) + g (chip) + B (chip) represents the display panel of the embodiment of the present application, that is, the red light emitting unit 21 includes an excitation light source 211 and a photo-induced display module 212, which are oppositely disposed, and a red light source 213 for directly emitting light.
As can be seen from the above table, the red light emitting unit 21 adopts the above arrangement, so that the color gamut reaches 107.4%, which is greatly larger than the color gamut of red light and green light generated by only adopting the structural form of blue chip and quantum dot conversion layer, and exceeds 100%, even approaches 116.2% of the color gamut generated by direct light emission of three-color chips (red chip, blue chip, green chip).
In summary, the red light-emitting unit 21 includes the red light source 213, so as to further improve the color gamut while ensuring the standard of the white light.
It should be noted that R (chip) + R (B + RQD) + g (chip) + B (chip) in the table does not represent the arrangement of the light-emitting units, and the arrangement is not limited to the red light source 213 in the red light-emitting unit 21, the excitation light source 211 in the red light-emitting unit 21, the photo-display module 212, the green light-emitting unit 22, and the blue light-emitting unit 23 in the order mentioned above, but represents the structure of the light-emitting units included in the display panel.
Fig. 5 is a schematic structural diagram of another display panel provided in the embodiment of the present application.
Referring to fig. 5, in some alternative embodiments, the display panel includes a plurality of pixels, each of the pixels includes a red light emitting unit 21, a green light emitting unit 22, and a blue light emitting unit 23, and the red light emitting unit 21 and the blue light emitting unit 23 are respectively disposed at two sides of the green light emitting unit 22.
The red light source 213 of the red light emitting unit 21 is disposed on a side of the excitation light source 211 away from the green light source 221, as shown in fig. 3; alternatively, the red light source 213 in the red light emitting unit 21 is disposed on the side of the excitation light source 211 near the green light source 221, as shown in fig. 5.
As described above, the pixel arrangement is not only standard for white light and high in color gamut, but also convenient for manufacturing.
In other alternative embodiments, the light emitting units are arranged in the manner of a red light emitting unit 21, a blue light emitting unit 23 and a green light emitting unit 22, that is, the red light emitting unit 21 and the green light emitting unit 22 are respectively disposed at two sides of the blue light emitting unit 23. Wherein the red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.
It should be noted that, the arrangement of the light emitting units is not limited in the present application, but on the premise that the red light emitting unit 21, the green light emitting unit 22 and the blue light emitting unit 23 are required to be provided at the same time, the red light emitting unit 21 needs to include the adjacent excitation light source 211 and the red light source 213, for example, the arrangement of the light emitting units may also be the green light emitting unit 22, the red light emitting unit 21 and the blue light emitting unit 23, where the positions of the red light source 213 and the excitation light source 211 in the red light emitting unit 21 may be interchanged.
Fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present application, and fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the present application.
Referring to fig. 6 and 7, in other alternative embodiments, the display panel includes a plurality of pixels, each of the pixels includes a red light emitting unit 21, a green light emitting unit 22, and a blue light emitting unit 23, in each of the pixels, the red light source 213 and the excitation light source 211 in the red light emitting unit 21 are respectively disposed at two sides of the green light emitting unit 22, the blue light emitting unit 23 is disposed at a side of the red light source 213 away from the green light emitting unit 22, or the blue light emitting unit 23 is disposed at a side of the excitation light source 211 away from the green light emitting unit 22.
By adopting the pixel arrangement, the white light standard and the color gamut are higher, and the red light source 213 and the excitation light source 211 are arranged on two sides of the green light-emitting unit 22, so that the red light can be better mixed with other colored lights, and the display effect is better.
As shown in fig. 6, the light-emitting units are arranged in a manner of a red light source 213 in the red light-emitting unit 21, a green light-emitting unit 22, an excitation light source 211 in the red light-emitting unit 21, and a photo-induced display module 212 and a blue light-emitting unit 23 which are oppositely arranged. Wherein the red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.
As shown in fig. 7, the light-emitting units may be arranged in a manner of a blue light-emitting unit 23, a red light source 213 in the red light-emitting unit 21, a green light-emitting unit 22, an excitation light source 211 in the red light-emitting unit 21, and an oppositely disposed photo-induced display module 212. Wherein the red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.
In other alternative embodiments, the display panel includes a plurality of pixels, each pixel includes a red light-emitting unit 21, a green light-emitting unit 22, and a blue light-emitting unit 23, in each pixel, the red light source 213 and the excitation light source 211 in the red light-emitting unit 21 are respectively disposed on two sides of the blue light-emitting unit 23, the green light-emitting unit 22 is disposed on a side of the red light source 213 away from the blue light-emitting unit 23, or the green light-emitting unit 22 is disposed on a side of the excitation light source 211 away from the blue light-emitting unit 23. Wherein the red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.
By adopting the pixel arrangement, the white light standard and the color gamut are higher, and the red light source 213 and the excitation light source 211 are arranged on two sides of the blue light-emitting unit 23, so that the red light and other colored lights can be fully mixed, and the display effect is good.
In further alternative embodiments, the display panel includes a plurality of pixels, each including a red light-emitting unit 21, a green light-emitting unit 22, and a blue light-emitting unit 23, and in each pixel, the red light source 213 and the excitation light source 211 in the red light-emitting unit 21 are disposed on both sides of the blue light-emitting unit 23 and the green light-emitting unit 22, respectively. Wherein the red light source 213 and the excitation light source 211 in the red light emitting unit 21 can be interchanged.
In some alternative embodiments, the area of the red light source 213 is not less than 1/4 of the total light emitting area in each pixel, wherein the total light emitting area is the sum of the area of the red light source 213, the area of the excitation light source 211, and the areas of the green light source 221 and the blue light source 231.
In the pixel, the red light emitting unit 21 includes a red light source 213, an excitation light source 211, and a photo-induced display module 212, the existence of the excitation light source 211 and the photo-induced display module 212 makes the white light formed by the pixel tend to the standard, and avoids the bluish phenomenon, and the existence of the red light source 213 increases the color gamut as much as possible. Setting the area of the red light source 213 to not less than 1/4 of the total light emission area further ensures the color gamut of the display.
Fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present application.
In some alternative embodiments, the display panel includes a plurality of pixels, each pixel includes a red light-emitting unit 21, a green light-emitting unit 22, and a blue light-emitting unit 23 arranged in sequence, the red light-emitting unit 21 includes an excitation light source 211 disposed on the array substrate 1, and a photo-induced display module 212 disposed on a side of the excitation light source 211 away from the array substrate 1, a front projection of the photo-induced display module 212 on the array substrate 1 at least partially overlaps a front projection of the excitation light source 211 on the array substrate 1, and the photo-induced display module 212 emits red light under excitation of the excitation light source 211.
The area of the red light emitting unit 21 is equal to the area of the excitation light source 211.
The excitation light source 211 may be a light source emitting blue light.
In some alternative embodiments, the red light-emitting unit 21, the green light-emitting unit 22 and the blue light-emitting unit 23 are arranged in the pixel in this order, which facilitates the manufacturing process.
In further alternative embodiments, each pixel includes a green light-emitting unit 22, a red light-emitting unit 21, and a blue light-emitting unit 23, which are sequentially arranged.
In further alternative embodiments, each pixel includes a red light emitting unit 21, a blue light emitting unit 23, and a green light emitting unit 22, which are sequentially arranged.
In some alternative embodiments, the area of the excitation light source 211 in each pixel accounts for 1/3-2/3 of the total light emitting area, wherein the total light emitting area is the sum of the area of the excitation light source 211, the area of the green light source 221, and the area of the blue light source 231.
It should be noted that the area of the photo-induced display module 212 is proportional to the area of the excitation light source 211, and the larger the area of the excitation light source 211 is, the larger the area of the photo-induced display module 212 opposite thereto is, the more excitation light is converted into red light by the photo-induced display module 212. When the excitation light source 211 is excited by the photo-induced display module 212, the conversion efficiency is limited, that is, the light emitted by the excitation light source 211 cannot be converted into red light by one hundred percent, so that the area of the excitation light source 211 is increased, and the area of the orthographic projection overlapping part of the excitation light source 211 and the photo-induced display module 212 is increased, so that more light emitted by the excitation light source 211 is converted by the photo-induced display module 212, the emitting area of the red light is increased as much as possible, and the standard property of the mixed white light is ensured.
Optionally, the orthographic projection of the photo-induced display module 212 on the array substrate 1 overlaps with the orthographic projection of the excitation light source 211 on the array substrate 1, and the area of the photo-induced display module 212 is larger than the area of the excitation light source 211. Therefore, most of the light emitted from the excitation light source 211 can enter the photo-induced display module 212 for conversion, thereby increasing the conversion rate.
In some optional embodiments, the light emitting element layer 2 further includes a black matrix layer 3, the black matrix layer 3 is located on the same layer as the photo-induced display module 212, the black matrix layer 3 includes a first opening 31 corresponding to the red light emitting unit 21, a second opening 32 corresponding to the green light emitting unit 22, and a third opening 33 corresponding to the blue light emitting unit 23, an orthographic projection of the first opening 31 on the array substrate 1 at least partially overlaps an orthographic projection of the red light emitting unit 21 on the array substrate 1, an orthographic projection of the second opening 32 on the array substrate 1 at least partially overlaps an orthographic projection of the green light emitting unit 22 on the array substrate 1, and an orthographic projection of the third opening 33 on the array substrate 1 at least partially overlaps an orthographic projection of the blue light emitting unit 23 on the array substrate 1.
The black matrix layer 3 is provided, and the first opening 31, the second opening 32, and the third opening 33 for exposing the red light-emitting unit 21, the green light-emitting unit 22, and the blue light-emitting unit 23, respectively, are formed to prevent the light emitted from the excitation light source 211, the green light source 221, and the blue light source 231 from crosstalk with each other, affecting the display effect.
Alternatively, the first apertures 31 correspond one-to-one to the number of light sources in the red light-emitting units 21, the second apertures 32 correspond one-to-one to the number of light sources in the green light-emitting units 22, and the third apertures 33 correspond one-to-one to the number of light sources in the blue light-emitting units 23. Further alternatively, the red light-emitting unit 21 includes an excitation light source 211 and a red light source 213, and the plurality of first openings 31 correspond to the excitation light source 211 and the red light source 213, respectively, one to one. I.e., the number of first openings 31 is equal to the sum of the number of excitation light sources 211 and the number of red light sources 213.
Still further alternatively, each pixel includes a red light-emitting unit 21, a blue light-emitting unit 23, and a green light-emitting unit 22, and the red light-emitting unit 21 includes an excitation light source 211 and a red light source 213. The number of the first openings 31, the number of the second openings 32, and the number of the third openings 33 corresponding to each pixel are two.
In some alternative embodiments, the light-emitting element layer 2 further includes a first planarization layer 23, the first planarization layer 23 is disposed on the array substrate 1 and covers the excitation light sources 211, the blue light sources 231 and the green light sources 221, and the first planarization layer 23 is made of a light-transmitting material.
The first planarization layer 23 may include an organic layer of acryl, Polyimide (PI), benzocyclobutene (BCB), or the like, and the first planarization layer 23 has a planarization function.
In some alternative embodiments, the light-emitting element layer 2 further includes a second planarizing layer 24 formed in the first opening 31, the second opening 32, and the third opening 33, and the second planarizing layer 24 is made of a light-transmitting material.
The second planarization layer 24 may include an organic layer of acryl, Polyimide (PI), benzocyclobutene (BCB), or the like, and the second planarization layer 24 has a planarization effect.
In some alternative embodiments, the display panel further includes a counter substrate 4, the counter substrate 4 is disposed opposite to the array substrate 1, and the photo-induced display module 212 is formed on a side of the counter substrate 4 facing the array substrate 1.
The black matrix layer 3 is also formed on the side of the counter substrate 4 facing the array substrate 1.
Fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present application.
In some alternative embodiments, the black matrix layer 3 has an opposite light shielding layer 6 on the lower surface thereof, and the array substrate 1 has an array light shielding layer 5. The array light-shielding layer 5 separates the excitation light source 211, the green light source 221, and the blue light source 231, and the opposing light-shielding layer 6 and the array light-shielding layer 5 face each other in the vertical direction.
The opposite light-shielding layer 6 and the array light-shielding layer 5 of this embodiment may be made of light-absorbing black materials, or may be made of light-reflecting materials, as long as light transmission can be avoided.
In this embodiment, the excitation light source 211, the red light source 213, the blue light source 231, and the green light source 221 may be Micro-LEDs.
Fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present application.
Referring to fig. 10, an embodiment of the present invention further provides a display device 7 including the display panel.
The display device 7 may be a mobile phone including the display panel described in any of the above embodiments. In addition, in this embodiment, the display device 7 may also be a watch, a computer, a television, or the like, which is not limited in this application. Since the display device 7 provided in this embodiment includes the display panel described in the above embodiment, the display device 7 also has the advantages related to the display panel, and the implementation of the display device 7 can refer to the above embodiment of the display panel, and repeated descriptions are omitted.
While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, features shown in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.
Claims (13)
1. A display panel, comprising:
an array substrate;
the light-emitting element layer is formed on the array substrate and comprises a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and the area of the green light-emitting unit and the area of the blue light-emitting unit are smaller than that of the red light-emitting unit;
the red light-emitting unit comprises an excitation light source arranged on the array substrate and a photoinduced display module arranged on one side, away from the array substrate, of the excitation light source, wherein the orthographic projection of the photoinduced display module on the array substrate is at least partially overlapped with the orthographic projection of the excitation light source on the array substrate, and the photoinduced display module emits red light under the excitation of the excitation light source;
the green light emitting unit comprises a green light source arranged on the array substrate, and the blue light emitting unit comprises a blue light source arranged on the array substrate.
2. The display panel according to claim 1, wherein the red light emitting unit further comprises a red light source disposed on the array substrate.
3. The display panel according to claim 2, wherein the display panel comprises a plurality of pixels each including the red light emitting unit, the green light emitting unit, and the blue light emitting unit,
the red light emitting unit and the blue light emitting unit are respectively arranged at two sides of the green light emitting unit.
4. The display panel according to claim 2, wherein the display panel comprises a plurality of pixels each including the red light emitting unit, the green light emitting unit, and the blue light emitting unit,
in the pixel, the red light source and the excitation light source in the red light-emitting unit are respectively arranged on two sides of the green light-emitting unit, the blue light-emitting unit is arranged on one side of the red light source far away from the green light-emitting unit, or the blue light-emitting unit is arranged on one side of the excitation light source far away from the green light-emitting unit.
5. A display panel as claimed in claim 3 or 4 characterized in that in the pixel the area of the red light source is not less than 1/4 of the total area emitting light,
the total light-emitting area is the sum of the area of the red light source, the area of the excitation light source, and the area of the green light source and the blue light source.
6. The display panel of claim 1, wherein the excitation light source emits light at a wavelength less than a red light wavelength.
7. The display panel according to claim 1, wherein the display panel comprises a plurality of pixels, each pixel comprising a red light emitting unit, a green light emitting unit, and a blue light emitting unit arranged in sequence.
8. The display panel according to claim 7, wherein in each pixel, the area of the excitation light source accounts for 1/3-2/3 of the total light emitting area,
wherein the total light-emitting area is the sum of the area of the excitation light source, the area of the green light source and the area of the blue light source.
9. The display panel according to claim 1, wherein the light emitting element layer further comprises a black matrix layer, the black matrix layer and the photo-induced display module are positioned on the same layer, the black matrix layer comprises a first opening corresponding to the red light-emitting unit, a second opening corresponding to the green light-emitting unit and a third opening corresponding to the blue light-emitting unit, the orthographic projection of the first opening on the array substrate at least partially overlaps with the orthographic projection of the red light-emitting unit on the array substrate, an orthographic projection of the second opening on the array substrate at least partially overlaps with an orthographic projection of the green light-emitting unit on the array substrate, an orthographic projection of the third opening on the array substrate at least partially overlaps with an orthographic projection of the blue light-emitting unit on the array substrate.
10. The display panel according to claim 1, wherein the light emitting element layer further comprises a first planarization layer disposed on the array substrate and covering the excitation light source, the blue light source and the green light source, and the first planarization layer is made of a light-transmitting material.
11. The display panel according to claim 9, wherein the light-emitting element layer further comprises a second planarizing layer formed in the first opening, the second opening, and the third opening, and wherein the second planarizing layer is made of a light-transmitting material.
12. The display panel according to claim 10, further comprising an opposite substrate disposed opposite to the array substrate, wherein the light-induced display module is formed on a side of the opposite substrate facing the array substrate.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210193592.8A CN114566516A (en) | 2022-02-28 | 2022-02-28 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210193592.8A CN114566516A (en) | 2022-02-28 | 2022-02-28 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114566516A true CN114566516A (en) | 2022-05-31 |
Family
ID=81715635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210193592.8A Pending CN114566516A (en) | 2022-02-28 | 2022-02-28 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114566516A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140204319A1 (en) * | 2013-01-22 | 2014-07-24 | Beijing Boe Optoelectronics Technology Co., Ltd. | Display device and manufacturing method thereof |
| US20150219965A1 (en) * | 2013-04-09 | 2015-08-06 | Beijing Boe Optoelectronics Technology Co., Ltd. | Liquid crystal display panel, display device, and manufacturing method of liquid crystal display panel |
| US20150301408A1 (en) * | 2013-05-28 | 2015-10-22 | Boe Technology Group Co., Ltd. | Quantum dot color filter and manufacturing method thereof, and display apparatus |
| US20150357373A1 (en) * | 2014-06-09 | 2015-12-10 | Boe Technology Group Co., Ltd. | Array substrate and manufacturing method thereof and display device |
| US20170179438A1 (en) * | 2015-07-17 | 2017-06-22 | Boe Technology Group Co., Ltd. | Organic light emitting display panel and manufacturing method thereof, and display device |
| CN106981503A (en) * | 2017-04-27 | 2017-07-25 | 上海天马微电子有限公司 | A kind of display panel and electronic equipment |
| US20170261780A1 (en) * | 2015-11-09 | 2017-09-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for manufacturing pdlc display device and pdlc display device |
| US20170343859A1 (en) * | 2016-05-30 | 2017-11-30 | Maven Optronics Co., Ltd. | Photoluminescent display device and method for manufacturing the same |
| JP2018022133A (en) * | 2016-05-30 | 2018-02-08 | マブン オプトロニックス カンパニー リミテッドＭａｖｅｎ Ｏｐｔｒｏｎｉｃｓ Ｃｏ．， Ｌｔｄ． | Photoluminescence display device and method for manufacturing the same |
| CN110707135A (en) * | 2019-09-16 | 2020-01-17 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN112117296A (en) * | 2020-10-22 | 2020-12-22 | 厦门强力巨彩光电科技有限公司 | LED display panel and LED display device |
| US20210376272A1 (en) * | 2020-05-26 | 2021-12-02 | Boe Technology Group Co., Ltd. | Quantum dot-based display panel and method for fabricating the same, and display device |
-
2022
- 2022-02-28 CN CN202210193592.8A patent/CN114566516A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140204319A1 (en) * | 2013-01-22 | 2014-07-24 | Beijing Boe Optoelectronics Technology Co., Ltd. | Display device and manufacturing method thereof |
| US20150219965A1 (en) * | 2013-04-09 | 2015-08-06 | Beijing Boe Optoelectronics Technology Co., Ltd. | Liquid crystal display panel, display device, and manufacturing method of liquid crystal display panel |
| US20150301408A1 (en) * | 2013-05-28 | 2015-10-22 | Boe Technology Group Co., Ltd. | Quantum dot color filter and manufacturing method thereof, and display apparatus |
| US20150357373A1 (en) * | 2014-06-09 | 2015-12-10 | Boe Technology Group Co., Ltd. | Array substrate and manufacturing method thereof and display device |
| US20170179438A1 (en) * | 2015-07-17 | 2017-06-22 | Boe Technology Group Co., Ltd. | Organic light emitting display panel and manufacturing method thereof, and display device |
| US20170261780A1 (en) * | 2015-11-09 | 2017-09-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method for manufacturing pdlc display device and pdlc display device |
| US20170343859A1 (en) * | 2016-05-30 | 2017-11-30 | Maven Optronics Co., Ltd. | Photoluminescent display device and method for manufacturing the same |
| JP2018022133A (en) * | 2016-05-30 | 2018-02-08 | マブン オプトロニックス カンパニー リミテッドＭａｖｅｎ Ｏｐｔｒｏｎｉｃｓ Ｃｏ．， Ｌｔｄ． | Photoluminescence display device and method for manufacturing the same |
| CN106981503A (en) * | 2017-04-27 | 2017-07-25 | 上海天马微电子有限公司 | A kind of display panel and electronic equipment |
| CN110707135A (en) * | 2019-09-16 | 2020-01-17 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| US20210376272A1 (en) * | 2020-05-26 | 2021-12-02 | Boe Technology Group Co., Ltd. | Quantum dot-based display panel and method for fabricating the same, and display device |
| CN112117296A (en) * | 2020-10-22 | 2020-12-22 | 厦门强力巨彩光电科技有限公司 | LED display panel and LED display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105280686B (en) | A kind of display panel and display device | |
| JP5878579B2 (en) | Display device and television receiver | |
| CN111509025A (en) | Display panel based on quantum dots, preparation method thereof and display device | |
| TWI626479B (en) | Color filter and display panel using same | |
| TWI442139B (en) | Liquid crystal display | |
| KR102126350B1 (en) | Organic light emitting diode display device | |
| CN102812395B (en) | Display device and television receiver | |
| CN109411512A (en) | Display panel and the display device for using the display panel | |
| CN109920833B (en) | Array substrate, preparation method thereof, display panel and display device | |
| KR20110076447A (en) | Light emitting device and display device having the same | |
| CN204389849U (en) | A kind of quantum dot liquid crystal module and display device | |
| JP6496023B2 (en) | Display device and television receiver | |
| WO2020164183A1 (en) | Backlight module, display apparatus, driving method for display apparatus, and electronic device and computer-readable storage medium | |
| US20230157091A1 (en) | Display panel and display device | |
| CN108922914A (en) | A kind of OLED display panel and display device | |
| US20230102283A1 (en) | Display panel and display device | |
| CN109799647A (en) | A kind of backlight and liquid crystal display die set | |
| US20120275045A1 (en) | Blue photoresist and color filter substrate and display device using the same | |
| KR20110049114A (en) | Light emitting diode package and lcd module including the same | |
| JP2003233070A (en) | Flat panel type color image display device and information terminal | |
| CN114566516A (en) | Display panel and display device | |
| CN105717701A (en) | Backlight module for large-screen LCM and large-screen LCM | |
| JP2007251209A (en) | Light-emitting device | |
| JPH10282494A (en) | Liquid crystal display device | |
| CN111261666A (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |