CN110797382A - Display panel - Google Patents
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- CN110797382A CN110797382A CN201911088875.0A CN201911088875A CN110797382A CN 110797382 A CN110797382 A CN 110797382A CN 201911088875 A CN201911088875 A CN 201911088875A CN 110797382 A CN110797382 A CN 110797382A
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- display
- display panel
- display structure
- reflective
- electrode layer
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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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a display panel, belongs to the technical field of display, and can at least partially solve the problem of high power consumption of the conventional display panel. A display panel of the present invention has a display side for displaying, the display panel including a plurality of pixels, each pixel including: a reflective display structure for implementing display by reflecting light of an external environment; and the organic electro-luminescence display structure is positioned on one side of the reflection display structure far away from the display side and is used for electro-luminescence to realize display.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display panel.
Background
With the development of Display technology, Liquid Crystal Display (LCD) panels and Organic Light-Emitting Diode (OLED) panels have become the mainstream of Display panels at present.
The liquid crystal display panel realizes display through the combined action of the backlight source and the liquid crystal layer, but the power consumption of the liquid crystal display panel is larger. However, in a relatively bright environment, the luminance of the screen has to be increased to make the screen clear, and the increase in luminance increases power consumption.
Therefore, it is urgently needed to develop a display panel with good display effect and low power consumption under various light rays.
Disclosure of Invention
The invention at least partially solves the problem of large power consumption of the existing display panel and provides the display panel with low power consumption.
The technical solution adopted to solve the technical problem of the present invention is a display panel having a display side for displaying, the display panel including a plurality of pixels, each of the pixels including:
a reflective display structure for implementing display by reflecting light of an external environment;
and the organic electro-luminescence display structure is positioned on one side of the reflection display structure far away from the display side, and the organic electro-luminescence display structure realizes display through electro-luminescence.
Further preferably, the reflective display structure includes: the reflecting film is arranged on one side, close to the display side, of the organic electro-luminescent display structure; a first transparent substrate disposed between the reflective film and the organic electro-luminescent display structure, an accommodation gap being formed between the first transparent substrate and the reflective film; and the absorption particles are positioned in the accommodating gap, the size of the accommodating gap is larger than that of the absorption particles, so that the absorption particles can be in contact with the reflecting film or not in contact with the reflecting film, the refractive index of the absorption particles is smaller than that of the reflecting film, and when the absorption particles are in contact with the reflecting film, at least part of light emitted to the reflecting film from the external environment can be totally reflected at the interface of the absorption particles and the reflecting film.
It is further preferred that the reflective films are arranged in an array of semicircular shapes.
It is further preferred that the adsorbent particles are capable of absorbing at least a portion of the light directed thereto.
Further preferably, the reflective display structure further includes: and the second transparent substrate is arranged on one side of the reflecting film close to the display side.
Further preferably, the reflective display structure further includes: the first transparent electrode layer is arranged between the first transparent substrate and the adsorption particles; and a second transparent electrode layer disposed between the second transparent substrate and the reflective film, wherein the first transparent electrode layer and the second transparent electrode layer can generate a specific electric field, and the specific electric field can cause the adsorption particles to adsorb or leave the surface of the reflective film.
Further preferably, the reflective display structure further includes: and the first pixel isolation layer is arranged between the first transparent substrate and the second transparent substrate and used for packaging the adsorption particles in the accommodating gap.
Further preferably, the organic electro-luminescence display structure further includes: an organic to light emitting layer; a third electrode layer; the organic electro-luminescence layer is arranged on one side of the organic electro-luminescence layer close to the display side; and the fourth electrode layer is arranged on one side of the organic electroluminescent layer, which is far away from the display side.
Further preferably, the organic electro-luminescence display structure further includes: and the second pixel isolating layer is used for spacing the organic electrodes of any two adjacent pixels from the light emitting layer.
Further preferably, the organic electro-luminescence display structure further includes: and the first transistor is electrically connected with the fourth electrode layer and is used for providing voltage for the fourth electrode layer.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
wherein the reference numerals are: 1. a reflective display structure; 11. a reflective film; 12. a first transparent substrate; 13. adsorbing the particles; 14. a second transparent substrate; 15. a first transparent electrode layer; 16. a second transparent electrode layer; 17. a first pixel isolation layer; 2. an organic to light emitting display structure; 21. an organic to light emitting layer; 22. a third electrode layer; 23. a fourth electrode layer; 24. a second pixel isolation layer; 25. a first transistor.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. Moreover, certain well-known elements may not be shown in the figures.
In the following description, numerous specific details of the invention, such as structure, materials, dimensions, processing techniques and techniques of components, are set forth in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
Example 1:
as shown in fig. 1 and 2, the present embodiment provides a display panel having a display side for display, the display panel including a plurality of pixels, each pixel including:
a reflective display structure 1 for implementing display by reflecting light of an external environment;
and the organic electro-luminescence display structure 2 is positioned on one side of the reflection display structure 1 far away from the display side, and the organic electro-luminescence display structure 2 realizes display by electro-luminescence.
In other words, the display panel of the present embodiment has two display structures, namely, the reflective display structure 1 and the organic electro-luminescent display structure 2, and the reflective display structure 1 utilizes light reflection of the external environment to realize display, and the organic electro-luminescent display structure 2 realizes display by self-luminescence, so that the display panel of the present embodiment does not need to be provided with a light source structure, such as a backlight source.
Specifically, for the reflective display structure 1, light of the external environment is directed to the reflective display structure 1, and the reflective display structure 1 totally reflects at least a part of the light directed to it to realize display; in addition, since the display of the reflective display structure 1 needs to be displayed by the light of the external environment, the reflective display structure 1 is suitable for displaying under the condition of strong light of the external environment.
For the organic electro-luminescence display structure 2, since it is self-luminous, the display is realized, but since the luminance of the light emitting material of the organic electro-luminescence display structure 2 is not enough, the organic electro-luminescence display structure 2 is suitable for displaying under the condition that the external ambient light is dark.
In the display panel of the embodiment, the reflective display structure 1 suitable for displaying the light intensity in the external environment and the organic electro-luminescent display structure 2 suitable for displaying the weak light in the external environment are included, and the display switching between the reflective display structure 1 and the luminescent display structure 2 can be realized in different external environments, that is, the reflective display structure 1 realizes the display when the light intensity in the external environment is strong, and the organic electro-luminescent display structure 2 realizes the display when the light intensity in the external environment is weak. Compared with the display panel (such as a liquid crystal panel and an organic light emitting diode display panel) in the prior art, the display panel of the embodiment can reduce power consumption, thereby improving energy utilization rate.
Preferably, the reflective display structure 1 comprises:
a reflective film 11 disposed on a side of the organic-to-light emitting display structure 2 close to the display side;
a first transparent substrate 12 disposed between the reflective film 11 and the organic electro-luminescence display structure 2, a receiving gap being formed between the first transparent substrate 12 and the reflective film 11;
and the adsorption particles 13 are positioned in the accommodating gap, the size of the accommodating gap is larger than that of the adsorption particles 13, so that the adsorption particles 13 can be in contact with the reflecting film 11 or not in contact with the reflecting film 11, the refractive index of the adsorption particles 13 is smaller than that of the reflecting film 11, and when the adsorption particles 13 are in contact with the reflecting film 11, at least part of light emitted to the reflecting film 11 by the external environment can be subjected to total reflection at the interface of the adsorption particles 13 and the reflecting film 11.
That is, the reflective display structure 1 has a reflective film 11, a first transparent substrate 12, and adsorbing particles 13 located in a receiving gap between the reflective film 11 and the first transparent substrate 12, and the adsorbing particles 13 located in the receiving gap may be tightly adsorbed on the surface of the reflective film 11, or may not be adsorbed on the surface of the reflective film 11, i.e., not in contact with the reflective film 11. Since the refractive index of the adsorbing particles 13 is smaller than that of the reflective film 11, when the adsorbing particles 13 are adsorbed on the surface of the reflective film 11, the light emitted to the outside of the reflective film 11 from the reflective film 11 to the adsorbing particles 13 is from the optically dense medium to the optically sparse medium, and therefore, a part of the light with an incident angle satisfying the total reflection condition can be totally reflected, so as to realize display.
Note that the amount of reflected light, that is, the brightness of the display of the reflective display structure 1 is changed by changing the amount of adsorption of the adsorption particles 13 on the reflective film 11. In addition, the screen displayed by the reflective display structure 1 is a black-and-white screen.
The reflective display structure 1 in the display panel of this embodiment makes the total reflection of the external environment light to realize the display through the reflective film 11 and the adsorption particles 13, and the structure and the principle are simple, so that the preparation process of the display panel is simple, and the manufacturing cost is low.
Preferably, the reflective film 11 is formed in an array of semicircular shapes.
The reflective film 11 is convex in a semicircular shape so as to change the incident angle of light emitted to the reflective film 11, so that the incident angle of light as much as possible satisfies the condition of the incident angle required for total reflection.
When the incident angle of as much light as possible from the external environment to the interface between the reflective film 11 and the adsorption particles 13 satisfies the total reflection condition, more light can be totally reflected, so that the utilization rate of the light displayed by the reflective display structure 1 is improved, and the brightness displayed by the reflective display structure 1 is ensured.
It should be noted that the reflective film 11 is not limited to be semicircular, and may be any other structure that facilitates total reflection of light, which is not listed here.
Preferably, the absorbing particles 13 are capable of absorbing at least a portion of the light directed thereto.
Among them, that is, the adsorption particles 13 may be particles capable of absorbing light, so that the amount of light finally used for display may also be adjusted by the absorption of light by the adsorption particles 13 adsorbed on the surface of the reflective film 11 to adjust the display luminance of the reflective display structure 1.
The adsorbing particles 13 may be particles for absorbing light of a specific wavelength, for example, the adsorbing particles 13 may absorb light of a wavelength other than red light, so that light reflected by the adsorbing particles 13 becomes red light.
Preferably, the reflective display structure 1 further comprises: and a second transparent substrate 14 disposed on the display side of the reflective film 11.
That is, the second transparent substrate 14 is disposed opposite to the first transparent substrate 12, and the reflective film 11 and the adsorbing particles 13 are disposed between the second transparent substrate 14 and the first transparent substrate 12.
The position of the reflective film 11 can be more stable due to the arrangement of the second transparent substrate 14, so that the stability of the accommodating gap formed between the reflective film 11 and the first transparent substrate 12 is ensured, and the display performance of the reflective display structure 1 is further ensured.
Preferably, the reflective display structure 1 further comprises:
a first transparent electrode layer 15 disposed between the first transparent substrate 12 and the adsorption particles 13;
and a second transparent electrode layer 16 disposed between the second transparent substrate 14 and the reflective film 11, wherein the first transparent electrode layer 15 and the second transparent electrode layer 16 can generate a specific electric field, and the specific electric field can attract or separate the adsorbed particles 13 to or from the surface of the reflective film 11.
Wherein, that is to say, the adsorption particles 13 can be adsorption particles 13 with charges, and the amount of adsorption of the adsorption particles 13 on the surface of the reflective film 11 is adjusted by controlling the field intensity of a specific electric field, so as to change the amount of reflected light, thereby realizing the normal display of the reflective display structure 1.
It should be noted that the field strengths of the specific electric fields generated by the first transparent electrode layer 15 and the second transparent electrode layer 16 of different pixels may be different, so that the field strength of the specific electric field of different pixels can be adjusted to realize the display of the picture.
Preferably, the reflective display structure 1 further comprises:
and a first pixel isolation layer 17 disposed between the first transparent substrate 12 and the second transparent substrate 14 for encapsulating the adsorption particles 13 in the accommodation gap.
Wherein, that is to say, the first pixel isolation layer 17 is used to space any adjacent pixels from each other, so that the adsorption particles 13 of the adjacent pixels can be prevented from influencing each other, thereby ensuring the normal display of the reflective display structure 1.
Preferably, the organic electro-luminescent display structure 2(OLED) further comprises:
organic to light emitting layer 21;
a third electrode layer 22; is disposed on the side of the organic electroluminescent layer 21 close to the display side;
and a fourth electrode layer 23 provided on a side of the organic electron emission layer 21 away from the display side.
In this case, that is, the organic electro-luminescence display structure 2 is formed by the organic electro-luminescence layer 21, the third electrode layer 22 and the fourth electrode layer 23, and self-luminescence of the organic electro-luminescence layer 21 is realized by applying a voltage to the third electrode layer 22 and the fourth electrode layer 23. Specifically, the third electrode layer 22 may be a cathode layer, and the fourth electrode layer 23 may be an anode layer, both formed of Indium Tin Oxide (ITO) material.
Note that the organic electro-luminescence display structure 2 further includes a hole transport layer (HIL), an Electron Transport Layer (ETL), an insulating layer, and the like, which are not described in detail herein.
Preferably, the organic electro-luminescence display structure 2 further includes:
and a second pixel isolation layer 24 for spacing the organic electrodes of any two adjacent pixels from the light emitting layer 21.
Wherein, that is to say, the second pixel isolation layer 24 is used to space the organic electrodes of any adjacent pixels from the light emitting layer 21, so that the organic electrodes of the adjacent pixels can be prevented from influencing the light emitting layer 21, thereby ensuring the normal display of the organic electrodes to the light emitting display structure 2.
Preferably, the organic electro-optic display structure 2 further includes:
and a first transistor 25 electrically connected to the fourth electrode layer 23, for supplying a voltage to the fourth electrode layer 23.
Wherein the first transistor 25 may be connected to the common electrode. The third electrode layer 22 may be connected to other electrodes, which will not be described in detail herein.
The working process of the display panel of the embodiment is specifically as follows:
when the light intensity of the external environment is high, as shown in fig. 1, the first transparent electrode layer 15 and the second transparent electrode layer 16 generate a specific electric field, so that the adsorbing particles 13 with low refractive index are adsorbed on the reflective film 11, and the light emitted to the external of the reflective film 11 is from the optically dense medium to the optically sparse medium from the reflective film 11 to the adsorbing particles 13, so that a part of the light with an incident angle satisfying the total reflection condition in the light can be totally reflected, as shown by an arrow in fig. 1, to realize the display, and at this time, the organic electro-luminescent display structure 2 does not work; when the external environment is weak, as shown in fig. 2, the first transparent electrode layer 15 and the second transparent electrode layer 16 do not generate a specific electric field, the adsorption particles 13 do not contact the reflective film 11, and the organic electro-luminescence display structure 2 operates, and light emitted from the organic electro-luminescence display structure 2 passes through the reflective film 11, as shown by arrows in fig. 2, thereby implementing transmissive display.
Specifically, the display panel can be any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various 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 (10)
1. A display panel having a display side for displaying, the display panel comprising a plurality of pixels, each of the pixels comprising:
a reflective display structure for implementing display by reflecting light of an external environment;
and the organic electro-luminescence display structure is positioned on one side of the reflection display structure far away from the display side, and the organic electro-luminescence display structure realizes display through electro-luminescence.
2. The display panel of claim 1, wherein the reflective display structure comprises:
the reflecting film is arranged on one side, close to the display side, of the organic electro-luminescent display structure;
a first transparent substrate disposed between the reflective film and the organic electro-luminescent display structure, an accommodation gap being formed between the first transparent substrate and the reflective film;
and the absorption particles are positioned in the accommodating gap, the size of the accommodating gap is larger than that of the absorption particles, so that the absorption particles can be in contact with the reflecting film or not in contact with the reflecting film, the refractive index of the absorption particles is smaller than that of the reflecting film, and when the absorption particles are in contact with the reflecting film, at least part of light emitted to the reflecting film from the external environment can be totally reflected at the interface of the absorption particles and the reflecting film.
3. The display panel according to claim 2, wherein the reflective film is formed in a semicircular shape distributed in an array.
4. The display panel of claim 2, wherein the absorbing particles are capable of absorbing at least a portion of light directed thereto.
5. The display panel of claim 2, wherein the reflective display structure further comprises:
and the second transparent substrate is arranged on one side of the reflecting film close to the display side.
6. The display panel of claim 2, wherein the reflective display structure further comprises:
the first transparent electrode layer is arranged between the first transparent substrate and the adsorption particles;
and a second transparent electrode layer disposed between the second transparent substrate and the reflective film, wherein the first transparent electrode layer and the second transparent electrode layer can generate a specific electric field, and the specific electric field can cause the adsorption particles to adsorb or leave the surface of the reflective film.
7. The display panel of claim 2, wherein the reflective display structure further comprises:
and the first pixel isolation layer is arranged between the first transparent substrate and the second transparent substrate and used for packaging the adsorption particles in the accommodating gap.
8. The display panel of claim 1, wherein the organic electro-luminescent display structure further comprises:
an organic to light emitting layer;
a third electrode layer; the organic electro-luminescence layer is arranged on one side of the organic electro-luminescence layer close to the display side;
and the fourth electrode layer is arranged on one side of the organic electroluminescent layer, which is far away from the display side.
9. The display panel of claim 8, wherein the organic electro-luminescent display structure further comprises:
and the second pixel isolating layer is used for spacing the organic electrodes of any two adjacent pixels from the light emitting layer.
10. The display panel of claim 8, wherein the organic electro-luminescent display structure further comprises:
and the first transistor is electrically connected with the fourth electrode layer and is used for providing voltage for the fourth electrode layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088875.0A CN110797382B (en) | 2019-11-08 | 2019-11-08 | Display panel |
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| CN201911088875.0A CN110797382B (en) | 2019-11-08 | 2019-11-08 | Display panel |
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| CN110797382A true CN110797382A (en) | 2020-02-14 |
| CN110797382B CN110797382B (en) | 2022-04-29 |
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| Publication number | Publication date |
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| CN110797382B (en) | 2022-04-29 |
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