CN111640879A - OLED display panel and display device - Google Patents
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- CN111640879A CN111640879A CN201910154386.4A CN201910154386A CN111640879A CN 111640879 A CN111640879 A CN 111640879A CN 201910154386 A CN201910154386 A CN 201910154386A CN 111640879 A CN111640879 A CN 111640879A
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- 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
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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Abstract
The invention provides an OLED display panel and a display device, wherein the panel comprises a substrate, wherein the substrate comprises a thin film transistor array; an organic light emitting layer including a plurality of pixel units, each of the pixel units including a plurality of sub-pixel units; the packaging layer covers the surface of one side, far away from the substrate, of the organic light emitting layer; the micro-lens array is arranged above the packaging layer and consists of a plurality of liquid lenses, and each liquid lens at least corresponds to one sub-pixel unit in the pixel units one by one; changing a focal length of the liquid lenses by a voltage applied to each of the liquid lenses; and a protective cover plate. According to the invention, the liquid lens with the curvature capable of being regulated and controlled by applying voltage is added on the sub-pixels, so that the luminance of R, G, B three colors and the attenuation rate of color codes are regulated, and the large-viewing-angle color cast of the display panel is solved; meanwhile, the color purity and the color gamut of the display panel are improved.
Description
Technical Field
The invention relates to the field of display devices, in particular to an OLED display panel and a display device.
Background
An OLED (Organic-Light-Emitting Diode) display is a display made of Organic electroluminescent diodes. The organic electroluminescent display has the excellent characteristics of self-luminous organic electroluminescent diode, no need of backlight source, high contrast, thin thickness, wide viewing angle, high reaction speed, wide use temperature range, simple structure and manufacture process and the like, and is considered as a new application technology of the next generation of flat panel display.
However, the large viewing angle color shift of the OLED display screen is a common problem, and the industry usually measures the color shift of the screen by measuring the white color scale of 30 ° or 45 ° relative to the color scale of the positive viewing angle (0 °). The reason why the color cast occurs at a large viewing angle is that: in the pixel unit of the current OLED display panel, R (red), G (green), and B (blue) sub-pixels independently emit light, and the pixel unit can display different colors by independently controlling the light emitting luminance of each sub-pixel in one pixel unit. Generally, the R, G, B sub-pixels belong to top emission, and because the top emission has microcavity effect, the ratios of the attenuation of the R, G, B three colors of luminance are inconsistent at a large viewing angle, and the color scale is also blue-shifted, and the white color scale formed by mixing the three colors is shifted from the normal viewing angle, so that the color shift phenomenon occurs when the viewing angle is large.
In the prior art, some light-emitting object materials are changed R, G, B, for example, in order to solve the problem of slow red light attenuation under a large viewing angle, the R sub-pixel can be replaced by a material with fast brightness attenuation, and this method has the disadvantages that it is difficult to find a material which has both efficiency, voltage, lifetime and fast brightness attenuation, and the implementation period is long. Some have chosen host materials with higher refractive indices by changing R, G, B the refractive index of the light emitting host material, e.g., requiring slower luminance decay, but it is similarly difficult to find a suitable host material. In addition, the microcavity effect can be weakened by reducing the thickness of the cathode, the blue shift of a color code is slowed down, the reduction of the brightness is slowed down, and further the color cast of a visual angle is improved.
In addition, the above three methods can only be implemented in the production process of the display panel, but due to the fluctuation of the production process, even if the three methods are implemented simultaneously, a large viewing angle color shift still exists after a part of the display screen is produced, which causes yield loss. Therefore, how to reduce the large viewing angle color cast of the OLED display screen becomes an urgent problem to be solved in the field.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide an OLED display panel and a display device, in which a liquid lens is added to a sub-pixel, and meanwhile, the curvature of the liquid lens can be controlled and adjusted by adjusting a voltage applied to the liquid lens, so as to adjust the attenuation rate of the luminance and color scale of the sub-pixel along with the emission angle, and solve the problem of color shift of the display panel with a large viewing angle.
An embodiment of the present invention provides an OLED display panel including:
the organic light-emitting layer is positioned on one side surface of the thin film transistor array, which is far away from the substrate, and comprises a plurality of pixel units, and each pixel unit comprises a plurality of sub-pixel units;
the packaging layer covers the surface of one side, far away from the substrate, of the organic light emitting layer;
the micro-lens array is arranged on the surface of one side, away from the organic light-emitting layer, of the packaging layer and consists of a plurality of liquid lenses, and each liquid lens is in one-to-one correspondence with at least one sub-pixel unit in the pixel units; changing a focal length of the liquid lenses by a voltage applied to each of the liquid lenses; and
and the protective cover plate is arranged on the surface of one side of the micro-lens array, which is far away from the packaging layer.
Preferably, each of the liquid lenses corresponds to each of the sub-pixel units one to one.
Preferably, each pixel unit comprises three sub-pixel units, and the three sub-pixel units of the same pixel unit are arranged in a triangular mode, a diamond mode or a rendering mode.
Preferably, each of the liquid lenses covers each of the sub-pixel units.
Preferably, each of the liquid lenses is composed of a first conductive liquid and a second non-conductive liquid which are transparent and immiscible with each other.
Preferably, each of the liquid lenses further includes a first electrode and a second electrode, the first electrode and the second electrode being in contact with the first liquid and the second liquid, respectively, an applied voltage between the first electrode and the second electrode is V, and a surface curvature of an interface between the first liquid and the second liquid is changed by changing the applied voltage.
Preferably, the microlens array is prepared using electrowetting techniques.
Preferably, the OLED display panel further includes a polarizer disposed between the encapsulation cover plate and the microlens array.
Preferably, the OLED display panel further includes an optical adhesive layer disposed between the microlens array and the protective cover plate.
The embodiment of the invention also provides a display device which comprises the OLED display panel.
According to the invention, the micro-lens array is introduced into the OLED display panel, so that no color cast can be realized at a specified angle; meanwhile, after the micro-lens array is introduced, the thickness of a cathode layer of the sub-pixels of the display panel is not required to be reduced, so that the microcavity effect is weakened, the cathode layer with a certain thickness is beneficial to prolonging the service life of the display panel, and the color deficiency phenomenon caused by large resistance of the cathode layer is improved, so that the OLED display panel has higher color purity and wider color gamut.
Drawings
Other features, objects, and advantages of the invention will be apparent from the following detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings and which is incorporated in and constitutes a part of this specification, illustrating embodiments consistent with the present application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic cross-sectional view of an OLED display panel according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a positional relationship between a liquid lens and a sub-pixel unit according to an embodiment of the present invention;
FIGS. 3a, 3b and 3c are schematic diagrams of the focal length of a liquid lens as a function of voltage according to an embodiment of the present invention;
FIGS. 4a and 4b are schematic diagrams illustrating the attenuation of green light without and with the liquid lens, respectively, in one embodiment of the present invention;
FIG. 5 is a graph showing the variation of the brightness of light with the emission angle before and after the implementation of the liquid lens according to an embodiment of the present invention.
Reference numerals
10 base plate
20 organic light emitting layer
30 encapsulation layer
40 polarizer layer
50 microlens array layer
500 liquid lens
60 optical adhesive layer
70 protective cover plate
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
Fig. 1 is a schematic cross-sectional view of an OLED display panel according to an embodiment of the present invention, and specifically, includes a substrate 10 including a substrate and a Thin Film Transistor (TFT) array thereon. The base substrate of the present invention is not limited to a flexible substrate made of Polyimide (PI) or polyethylene terephthalate (PET), and glass, polymer, metal foil, or the like may be used. A Thin Film Transistor (TFT) array includes a plurality of TFTs arranged in an array.
The organic light emitting layer 20 is located on one side surface of the thin film transistor array far away from the substrate 10, the organic light emitting layer 20 includes a plurality of pixel units, each pixel unit includes a plurality of sub-pixels, and each sub-pixel includes an anode layer, a light emitting function layer and a cathode layer. The holes provided from the anode layer and the electrons provided from the cathode layer form excitons in the light emitting layer, and emit light of a predetermined wavelength when the excitons fall to a ground state, and it is estimated that the R, G, and B sub-pixel units of the pixel unit of the conventional OLED may be formed by the difference in characteristics of the light emitting functional layer material. The anode layer may be formed using an Indium Tin Oxide (ITO) film, an Indium Zinc Oxide (IZO) film, or other transparent conductive materials, and generally, a conductive material having a work function greater than 4.0eV is used. The cathode layer may be made of a metal, or an alloy, such as: ag. Mg: ag. Al, etc., and a conductive material having a work function of less than 4.0eV is generally used. The light emitting function layer may employ an organic material light emitting layer (an organic material for emitting red, green or blue light) or a quantum dot-based light emitting layer.
By independently controlling the light emitting brightness of the three sub-pixels in one pixel unit, the pixel unit can display different colors. The independent control of the light emitting brightness of each sub-pixel can be realized by the TFT in the thin film transistor array. The anode layer, the light-emitting functional layer and the cathode layer of each sub-pixel can be sequentially stacked on the thin film transistor array layer; specifically, the TFT is electrically connected to a cathode layer and an anode layer of the organic light emitting layer 20; the light emitting function layer may include an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer, which are stacked between the cathode layer and the anode layer, and a specific structure is not shown in the drawings.
The packaging layer 30, the packaging layer 30 covers the surface of one side of the organic light emitting layer 20 away from the substrate 10; for the OLED display panel, the packaging effect of the packaging layer directly influences the reliability and the service life of the OLED display panel. The encapsulation effect of the encapsulation layer depends on the thickness of the encapsulation layer 30, the water-oxygen barrier properties and the bending resistance of the encapsulation layer material. The existing data show that the film packaging layer with the structure of alternately laminating the inorganic film and the organic polymer film has higher water and oxygen barrier capability and better bending resistance.
A micro lens array 50 disposed above the encapsulation layer 30, wherein the micro lens array 50 is composed of a plurality of liquid lenses 500, and each liquid lens 500 corresponds to at least one sub-pixel unit of the pixel units; changing the focal length of the liquid lenses 500 by applying a voltage across each of the liquid lenses 500; and a protective cover 70.
Here, each of the liquid lenses 500 corresponds to at least one sub-pixel unit in the pixel units one to one, that is, the liquid lens 500 may correspond to one sub-pixel unit, for example, only one to one red sub-pixel unit, only one to one green sub-pixel unit, or only one to one blue sub-pixel unit, and the number of the liquid lenses 500 is the same as that of the sub-pixel units of a single kind; the liquid lens 500 may also correspond to two sub-pixel units one by one, for example, the two sub-pixel units correspond to a red sub-pixel and a green sub-pixel one by one; in other alternative embodiments, the liquid lens 500 may be disposed in one-to-one correspondence with three sub-pixel units at the same time.
Taking the pixel unit of the conventional OLED as an example, each pixel unit includes three sub-pixel units, namely an R sub-pixel unit, a G sub-pixel unit and a B sub-pixel unit, and since the brightness of green light is attenuated more rapidly with increasing viewing angle than the blue light or red light is attenuated with increasing viewing angle and the color code blue shift is also faster, in the embodiment of the present invention, the liquid lens 500 may be disposed on each G sub-pixel unit only, and the liquid lens is controlled to be a concave lens by voltage, and the concave lens is used to reduce the attenuation of the brightness of green light and the color code blue shift.
Of course, if the attenuation of the brightness of each sub-pixel unit can be controlled to a certain degree, the color purity of the OLED display panel and the color gamut of the extended panel can be greatly improved. Therefore, in an embodiment of the invention, each of the sub-pixel units corresponds to each of the liquid lenses one to one. See fig. 2 for the positional relationship of the liquid lens to the sub-pixel element. It should be noted that the three sub-pixel units included in the pixel unit of the OLED display panel are not limited to the triangular arrangement (RealDelta) in fig. 2, and the three sub-pixel units of the same pixel unit may also be a diamond arrangement (RGBG) or a Rendering (Rendering) arrangement, etc. Meanwhile, each sub-pixel in the embodiment shown in fig. 2 is rectangular, and in a specific implementation, for different display devices, sub-pixels with different shapes, such as a circle, a sector, a trapezoid, a hexagon, an octagon, etc., may be arranged to meet different design requirements. Each liquid lens 500 of the present invention is shaped to cover the corresponding sub-pixel.
It should be noted that, since the light emitting functional layer for emitting green light and red light may use a phosphorescent organic light emitting material having a high light emitting efficiency and the light emitting functional layer for emitting blue light uses a fluorescent light emitting material having a low light emitting efficiency, it is possible to dispose sub-pixel units for emitting green light and red light on one side and sub-pixel units for emitting blue light on the other side separately, and to set the light emitting area provided with the sub-pixel units for emitting blue light in fig. 2 to be large, so that the luminance of light emitted by the B sub-pixel is equivalent to the luminance of light emitted by the R or G sub-pixel.
In one embodiment of the present invention, the microlens array is fabricated using electrowetting technology. Each liquid lens of the micro-lens array is composed of a transparent and non-soluble conductive first liquid and a non-conductive second liquid, the first liquid and the second liquid are placed in a fluid chamber at the same time, the first liquid and the second liquid can be arranged up and down, for example, the first liquid is arranged above the second liquid, a first electrode and a second electrode of each liquid lens are respectively contacted with the first liquid and the second liquid, and a voltage V can be applied between the first electrode and the second electrode. Changing the applied voltage changes the wettability, i.e. the surface tension, of the first liquid, whereby the shape of the liquid changes and thereby the curvature of the surface of the contact interface between the first liquid and the second liquid. Changing the focal length of the liquid lens is achieved herein by changing the surface curvature of the interface between the first liquid and the second liquid by changing the applied voltage. For example, it may be composed of conductive water and non-conductive oil, and the applied voltage may adjust the radius of curvature of the water and oil interface.
The microlens can be changed into a concave lens or a convex lens by changing the applied voltage, and the curvature of the lens is also adjustable, that is, the focal length is adjustable. FIGS. 3a, 3b and 3c are schematic diagrams of the focal length of a liquid lens as a function of applied voltage according to an embodiment of the present invention; due to the variation of the focal length of the liquid lens, the liquid lens may be a planar lens (state of fig. 3 a), a concave lens (state of fig. 3 b) or a convex lens (state of fig. 3 c).
When the liquid lens is a plane lens, the attenuation of R, G, B brightness at different angles is not influenced; when the liquid lens is a concave lens, the concave lens plays a role in dispersing light, and when the brightness of R, G, B is increased along with the angle, the brightness attenuation is slowed; when the liquid lens is a convex lens, the luminance of R, G, B decreases faster as the angle increases.
Fig. 4a and 4b are schematic diagrams illustrating the attenuation of green light without passing through and through the liquid lens in an embodiment of the present invention, the liquid lens in fig. 4b is a concave lens, the brightness of green light without passing through the liquid lens in fig. 4a (emission angle 30 °) is 75% of the brightness when the emission angle is 0 °, and the brightness of green light passing through the liquid lens in fig. 4b (emission angle 30 °) is 85% of the brightness when the emission angle is 0 °. Likewise, the color scale (CIE, standard of colorimetry) of green light that has not passed through the liquid lens attenuates from 0.235, which is an emission angle of 0 °, to 0.225, which is an emission angle of 30 °; and after passing through the liquid lens, decays to 0.229 at an emission angle of 30. The above data further demonstrate that the green brightness decays slowly with emission angle and the color scale decreases slowly after application of the liquid lens (concave lens). Similarly, when the applied liquid lens is a convex lens, the green light brightness is quickly attenuated along with the emission angle, and the color scale is also quickly reduced.
For the embodiments of the present invention, the brightness of light as a function of emission angle before and after implementation of the liquid lens was also measured, see fig. 5. In the figure, the solid line with diamond-solid is the display panel with liquid lenses. The display panel of the present invention can combine R, G, B decay as required to actually adjust the decay rate of the brightness of one or both colors in R, G, B at a particular angle by adjusting the voltage applied to the liquid lens.
The OLED display panel of one embodiment of the invention further comprises a polarizer, and the polarizer is arranged between the packaging cover plate and the micro lens array. The OLED adopts a polaroid, can be used for absorbing reflected light to reduce external light reflection interference and simultaneously enhance the contrast.
The OLED display panel according to an embodiment of the present invention further includes an Optical clear adhesive layer 60 (OCA), where the Optical adhesive layer 60 is disposed between the microlens array and the protective cover plate. The optical bonding glue layer is beneficial to the joint of the micro-lens array and the protective cover plate.
The embodiment of the disclosure also provides an OLED display device, which comprises the OLED display panel. In a specific implementation, the OLED display device provided in the embodiments of the present disclosure may be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator.
In summary, the present invention provides an OLED display panel and a display device, where the OLED display panel includes a substrate, and the substrate includes a thin film transistor array; an organic light emitting layer, the light emitting structure including a plurality of pixel units, each of the pixel units including a plurality of sub-pixel units; the packaging layer covers the surface of one side, far away from the substrate, of the organic light emitting layer; the micro-lens array is arranged above the packaging layer and consists of a plurality of liquid lenses extending in parallel, and each liquid lens at least corresponds to one sub-pixel unit in the pixel units one by one; changing a focal length of the liquid lenses by a voltage applied to each of the liquid lenses; and a protective cover plate.
The display panel can realize no color cast under a specified angle, namely, the white light color code under a large visual angle (30 degrees or 45 degrees) is expected to be consistent with that under a normal visual angle. Specifically, the white color patch at a positive viewing angle can be measured and used as an improvement target of the white color patch at a subsequent large viewing angle. The reason for this is that: the white light is determined by the brightness and color scale of R, G, B three colors, the shape of the liquid lens is changed by changing the applied voltage, so that the brightness and color scale of R, G, B three colors under a large visual angle are changed, finally, the white light color scale under the large visual angle is the same as the additional white light color scale under the normal visual angle, and the color cast is eliminated.
In addition, after the micro-lens array is introduced into the display panel, the thickness of the cathode layer of the sub-pixel is not required to be reduced, so that the microcavity effect is weakened, the cathode layer with a certain thickness is beneficial to prolonging the service life of the display panel, improving the color deficiency phenomenon caused by large resistance of the cathode layer, and improving the color purity and the color gamut of the display panel.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. It is to be understood that the terms "lower" or "upper", "downward" or "upward" and the like are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures; the terms first, second, etc. are used to denote names, but not any particular order.
Claims (10)
1. An OLED display panel comprising:
a substrate comprising a thin film transistor array;
the organic light-emitting layer is positioned on one side surface of the thin film transistor array, which is far away from the substrate, and comprises a plurality of pixel units, and each pixel unit comprises a plurality of sub-pixel units;
the packaging layer covers the surface of one side, far away from the substrate, of the organic light emitting layer;
the micro-lens array is arranged on the surface of one side, away from the organic light-emitting layer, of the packaging layer and consists of a plurality of liquid lenses, and each liquid lens is in one-to-one correspondence with at least one sub-pixel unit in the pixel units; changing a focal length of the liquid lenses by a voltage applied to each of the liquid lenses; and
and the protective cover plate is arranged on the surface of one side of the micro-lens array, which is far away from the packaging layer.
2. The OLED display panel of claim 1, wherein: each liquid lens corresponds to each sub-pixel unit one by one.
3. The OLED display panel of claim 1, wherein: each pixel unit comprises three sub-pixel units, and the three sub-pixel units of the same pixel unit are arranged in a triangular mode, a diamond mode or a rendering mode.
4. The OLED display panel of claim 1, wherein: each of the liquid lenses covers each of the sub-pixel units.
5. The OLED display panel of claim 1, wherein: each of the liquid lenses is composed of a first conductive liquid and a second non-conductive liquid which are transparent and immiscible with each other.
6. The OLED display panel of claim 5, wherein: each of the liquid lenses further includes a first electrode and a second electrode that are in contact with the first liquid and the second liquid, respectively, an applied voltage between the first electrode and the second electrode is V, and a surface curvature of an interface between the first liquid and the second liquid is changed by changing the applied voltage.
7. The OLED display panel of claim 5, wherein: the micro-lens array is prepared by adopting an electrowetting technology.
8. The OLED display panel of claim 1, further comprising a polarizer disposed between the encapsulation cover plate and the microlens array.
9. The OLED display panel of claim 1, further comprising an optical adhesive layer disposed between the microlens array and the protective cover sheet.
10. A display device comprising the OLED display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154386.4A CN111640879A (en) | 2019-03-01 | 2019-03-01 | OLED display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154386.4A CN111640879A (en) | 2019-03-01 | 2019-03-01 | OLED display panel and display device |
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| CN111640879A true CN111640879A (en) | 2020-09-08 |
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| CN201910154386.4A Pending CN111640879A (en) | 2019-03-01 | 2019-03-01 | OLED display panel and display device |
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| CN112133813A (en) * | 2020-09-24 | 2020-12-25 | 京东方科技集团股份有限公司 | Display panel, display device and electronic equipment |
| CN112445014A (en) * | 2020-12-08 | 2021-03-05 | 厦门天马微电子有限公司 | Display module and display device |
| WO2021139659A1 (en) * | 2020-01-06 | 2021-07-15 | 京东方科技集团股份有限公司 | Display panel, drive method therefor, and display apparatus |
| CN113380963A (en) * | 2021-06-10 | 2021-09-10 | 安徽熙泰智能科技有限公司 | Silicon-based OLED micro-display device and manufacturing process thereof |
| CN113534440A (en) * | 2021-07-13 | 2021-10-22 | 维沃移动通信有限公司 | Screen structure, electronic device and focusing method |
| CN113671606A (en) * | 2021-08-02 | 2021-11-19 | 维沃移动通信有限公司 | Super lens, camera module and electronic equipment that constitute |
| WO2024060907A1 (en) * | 2022-09-23 | 2024-03-28 | 京东方科技集团股份有限公司 | Display panel and display device |
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