CN107644895B - Organic light-emitting display panel, preparation method thereof, driving method thereof and display device - Google Patents
Organic light-emitting display panel, preparation method thereof, driving method thereof and display device Download PDFInfo
- Publication number
- CN107644895B CN107644895B CN201710868837.1A CN201710868837A CN107644895B CN 107644895 B CN107644895 B CN 107644895B CN 201710868837 A CN201710868837 A CN 201710868837A CN 107644895 B CN107644895 B CN 107644895B
- Authority
- CN
- China
- Prior art keywords
- organic light
- electrochromic
- light emitting
- control circuit
- forming
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000000463 material Substances 0.000 claims description 38
- 238000002834 transmittance Methods 0.000 claims description 28
- 230000008569 process Effects 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000000059 patterning Methods 0.000 claims description 6
- 238000005240 physical vapour deposition Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- -1 indium tin metal oxide Chemical class 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 1
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
Images
Landscapes
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses an organic light-emitting display panel, a preparation method thereof, a driving method and a display device, wherein an organic light-emitting device and an electrochromic device are arranged in a horizontal structure, and the organic light-emitting device and the electrochromic device are respectively controlled to work through different driving control circuits; when the display panel is in a non-display state, the second drive control circuit inputs voltage to the electrochromic device to enable the electrochromic device to be in a light-shielding state, and the shielding function of the display panel is achieved to prevent light leakage of the display panel in the non-display state.
Description
Technical Field
The invention relates to the technical field of organic electroluminescence, in particular to an organic light-emitting display panel, a preparation method, a driving method and a display device thereof.
Background
Organic Light Emitting Displays (OLEDs) are widely used in digital products because of their characteristics of being Light and thin, and saving power. Compared with the traditional Liquid Crystal Display (LCD), the OLED Display technology has different Display modes, does not need a backlight source, adopts a very thin organic material coating and a glass substrate, and when current flows through the organic material coating and the glass substrate, the organic material can emit light. The OLED display screen as a display device is also influenced by environmental factors, and particularly under the environment of strong light, the display effect of the OLED display screen is also reduced.
The conventional OLED display panel comprises a light emitting area and a transparent area, and can realize transparent display, but the transmittance of the conventional transparent area cannot be adjusted, and the flexibility is poor.
Disclosure of Invention
Embodiments of the present invention provide an organic light emitting display panel, a manufacturing method thereof, a driving method thereof, and a display device, so as to solve the problems of the existing organic light emitting display panel that the transmittance of a transparent region cannot be adjusted and the flexibility is poor.
The organic light-emitting display panel provided by the embodiment of the invention comprises a substrate and a plurality of pixel units which are arranged on the substrate in a matrix manner, wherein each pixel unit comprises a light-emitting area and a transparent area; wherein the light emitting region comprises: the driving circuit comprises a first driving control circuit, a second driving control circuit and an organic light-emitting device electrically connected with the first driving control circuit; the transparent region includes an electrochromic device electrically connected to the second drive control circuit.
Correspondingly, the embodiment of the invention also provides a display device which comprises the organic light-emitting display panel provided by the embodiment of the invention.
Correspondingly, the embodiment of the invention also provides a preparation method of the organic light-emitting display panel, which comprises the following steps:
forming a first drive control circuit and a second drive control circuit in the light emitting area;
and forming an organic light emitting device electrically connected with the first drive control circuit in the light emitting region and an electrochromic device electrically connected with the second drive control circuit in the transparent region, respectively.
Correspondingly, an embodiment of the present invention further provides a driving method of an organic light emitting display panel, including:
when the display module is in a display mode, the transparent area is controlled to be in a light shading state or a light transmitting state;
and when the display device is in a non-display mode, controlling the transparent area to be in a shading state.
The invention has the following beneficial effects:
the organic light-emitting display panel, the preparation method thereof, the driving method and the display device provided by the embodiment of the invention comprise a substrate and a plurality of pixel units which are arranged on the substrate in a matrix manner, wherein each pixel unit comprises a light-emitting area and a transparent area; wherein, the luminous zone includes: the driving circuit comprises a first driving control circuit, a second driving control circuit and an organic light-emitting device electrically connected with the first driving control circuit; the transparent region includes an electrochromic device electrically connected to the second drive control circuit. According to the invention, the organic light-emitting device and the electrochromic device are arranged in a horizontal structure, the thickness of the module is thinner, and the organic light-emitting device and the electrochromic device are respectively controlled to work through different drive control circuits, namely when the display panel is in a display state, different voltages are input to the electrochromic device through the second drive control circuit to adjust different transmittances of the electrochromic device, when the electrochromic device is in a shading state, the display effect of the display panel can be improved, and when the electrochromic device is in a light transmitting state, transparent display of the display panel with different transmittances can be realized; when the display panel is in a non-display state, the second drive control circuit inputs voltage to the electrochromic device to enable the electrochromic device to be in a light-shielding state, and the shielding function of the display panel is achieved to prevent light leakage of the display panel in the non-display state. Therefore, the organic light-emitting display panel can adjust the transmittance of the transparent area according to the requirement to realize different display requirements, and has better flexibility.
Drawings
Fig. 1 is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
fig. 3 is a third schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for fabricating an organic light emitting display panel according to an embodiment of the present invention;
fig. 5A to fig. 5H are schematic structural diagrams illustrating steps of a method for manufacturing an organic light emitting display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, specific embodiments of an organic light emitting display panel, a manufacturing method thereof, a driving method thereof and a display device according to embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The thicknesses and shapes of the respective layers in the drawings do not reflect the true proportions of the display panel, and are merely intended to schematically illustrate the present invention.
As shown in fig. 1 and 2, the display panel provided in the embodiment of the present invention includes a substrate 1, and a plurality of pixel units 2 arranged in a matrix on the substrate 1, where each pixel unit 2 includes a light emitting region 21 and a transparent region 22; wherein the light emitting region 21 includes: a first drive control circuit 211, a second drive control circuit 212, and an organic light emitting device 213 electrically connected to the first drive control circuit 211; the transparent region 22 includes an electrochromic device 221 electrically connected to the second drive control circuit 212.
The organic light-emitting display panel provided by the embodiment of the invention comprises a substrate and a plurality of pixel units which are arranged on the substrate in a matrix manner, wherein each pixel unit comprises a light-emitting area and a transparent area; wherein, the luminous zone includes: the driving circuit comprises a first driving control circuit, a second driving control circuit and an organic light-emitting device electrically connected with the first driving control circuit; the transparent region includes an electrochromic device electrically connected to the second drive control circuit. According to the invention, the organic light-emitting device and the electrochromic device are arranged in a horizontal structure, the thickness of the module is thinner, and the organic light-emitting device and the electrochromic device are respectively controlled to work through different drive control circuits, namely when the display panel is in a display state, different voltages are input to the electrochromic device through the second drive control circuit to adjust different transmittances of the electrochromic device, when the electrochromic device is in a shading state, the display effect of the display panel can be improved, and when the electrochromic device is in a light transmitting state, transparent display of the display panel with different transmittances can be realized; when the display panel is in a non-display state, the second drive control circuit inputs voltage to the electrochromic device to enable the electrochromic device to be in a light-shielding state, and the shielding function of the display panel is achieved to prevent light leakage of the display panel in the non-display state. Therefore, the organic light-emitting display panel can adjust the transmittance of the transparent area according to the requirement to realize different display requirements, and has better flexibility.
In specific implementation, in the above organic light emitting display panel provided by the embodiment of the present invention, as shown in fig. 2, the organic light emitting device 213 includes a reflective metal layer 01, an anode 02, an organic light emitting layer 03, and a cathode 04, which are stacked, and the electrochromic device 221 includes a first transparent electrode 05, an electrochromic structure 06, and a second transparent electrode 07, which are stacked; the reflective metal layer 01 is connected to the first driving control circuit 211, and the first transparent electrode 05 is connected to the second driving control circuit 212. Wherein, the first driving control circuit 211 may include: a gate electrode 002, an active layer 001 insulated from the gate electrode 002, and a source electrode 003 and a drain electrode 004 insulated from the gate electrode 002 and electrically connected to the active layer 001; the second drive control circuit 212 may include: a gate electrode 002 ', an active layer 001 ' insulated from the gate electrode 002 ', and a source electrode 003 ' and a drain electrode 004 ' insulated from the gate electrode 002 ' and electrically connected to the active layer 001 '; the gate 002, the active layer 001, the source 003 and the drain 004 of the first driving control circuit 211 are respectively disposed in the same layer as the gate 002 ', the active layer 001 ', the source 003 ' and the drain 004 ' of the second driving control circuit 212, and the drain 004 and the source 003 ' are insulated from each other.
Preferably, in the organic light emitting display panel provided in the embodiment of the present invention, the first transparent electrode and the second transparent electrode are Indium Tin Oxide (ITO) transparent electrodes, and ITO is a nano indium tin metal oxide, has good conductivity and transparency, and can cut off electron radiation, ultraviolet rays, and far infrared rays harmful to a human body. Therefore, indium tin oxide is generally sprayed on glass, plastic and electronic display screens by physical vapor deposition to form a film, and is used as a transparent conductive film, while reducing electron radiation and ultraviolet and infrared rays harmful to human bodies. Of course, in specific implementation, the materials of the first transparent electrode and the second transparent electrode may be all other transparent metal materials, and are not limited herein.
Preferably, in the organic light emitting display panel provided in the embodiment of the present invention, in order to implement transparent display, the anode is generally an ITO transparent electrode, and in order to increase the light emitting efficiency of the organic light emitting device, the cathode is generally a metal electrode.
In specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 3, a separation layer 08 for separating the organic light emitting device 213 and the electrochromic device 221; the separation layer 08 is made of an organic insulating material, and the anode 02 and the organic light emitting layer 03 of the organic light emitting device 213, and the first transparent electrode 05 and the electrochromic structure 06 of the electrochromic device 221 can be formed in the light emitting region 21 and the transparent region 22 through the separation layer 08, which is beneficial to process manufacturing.
Preferably, in the organic light emitting display panel according to the embodiment of the present invention, as shown in fig. 3, the second transparent electrode 07 and the cathode 04 are disposed in the same layer and electrically connected to each other. In this way, only one surface of the cathode 04 needs to be deposited above the organic light emitting device 213 and the electrochromic device 221, that is, the organic light emitting device 213 and the electrochromic device 221 share the cathode 04, so that the production efficiency can be improved.
In specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 3, the anode 02 and the first transparent electrode 05 are disposed in the same layer and are separated by the separation layer 08. Therefore, the patterns of the first transparent electrode 05 and the anode 02 can be formed through one-time composition process only by changing the original composition pattern when the first transparent electrode 05 is formed, and a process for independently preparing the anode 02 is not needed to be added, so that the preparation process flow can be simplified, the production cost can be saved, and the production efficiency can be improved; and the anode 02 is separated from the first transparent electrode 05 by the separation layer 08, so that in practical implementation, the transmittance of the electrochromic structure 06 can be controlled independently by controlling the voltage of the first transparent electrode 05 through the second driving control circuit 212, thereby realizing adjustment of different transmittances.
In specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, as shown in fig. 5G and 5H, the electrochromic structure 06 includes an electrochromic layer 061, an electrolyte layer 062, and an ion storage layer 063, which are located on the light emitting side of the organic light emitting display panel and are sequentially stacked from bottom to top. When the electrochromic device 221 works, a certain voltage is applied between the first transparent electrode 05 and the second transparent electrode 07 by the second control circuit 212, and the electrochromic layer 061 undergoes an oxidation-reduction reaction under the action of the voltage, so that the color changes; the electrolyte layer 062 is made of a special conductive material, such as a solution containing lithium perchlorate, sodium perchlorate, or the like, or a solid electrolyte material; the ion storage layer 063 stores corresponding counter ions when the electrochromic layer 061 undergoes an oxidation-reduction reaction, and keeps the charge balance of the whole system, and the ion storage layer 063 can also be an electrochromic material with the color change performance opposite to that of the previous electrochromic layer 061, so that the function of color superposition or color complementation can be achieved. Such as: the electrochromic layer 061 is made of an anodic oxidation electrochromic material, and the ion storage layer 063 may be made of a cathodic reduction electrochromic material.
In specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the material of the electrochromic layer may be an anode electrochromic material or a cathode electrochromic material according to a difference of a color change principle of the electrochromic material.
In a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the anode electrochromic material has multiple choices, and the anode electrochromic material may be NiOX、IrOXOne or a combination of the two materials, as shown in table 1 below, can be selected according to the actual needs, so as to further improve the display effect or realize transparent display. The specific material selected for the anodic electrochromic material is not limited herein.
The color change principle and color change of the anodic electrochromic material are listed in table 1 below.
TABLE 1
In specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, the cathode electrochromic material has multiple choices, and the cathode electrochromic material may be WO3、MoO3One or a combination thereof, here, according to the cathodic electrochromic materialThe color change principle, as shown in table 2 below, can be selected reasonably according to the actual needs to further improve the display effect or realize transparent display. The specific selection of the cathode electrochromic material is not limited herein.
The color change principle and color change of the cathode electrochromic material are listed in table 2 below.
TABLE 2
The color change principle of the anode electrochromic material and the cathode electrochromic material is explained as follows:
when the display panel is in a display state, when the electrochromic layer is made of an anode electrochromic material and the second control circuit applies voltage to the first transparent electrode and the second transparent electrode, the anode electrochromic material has electrons, is in a low-valence state (reduction state) and is in a light-transmitting state, so that the second control circuit applies different voltages, and transparent display of the display panel with different transmittances can be realized; when no voltage is applied to the first transparent electrode and the second transparent electrode, the anode electrochromic material loses electrons and undergoes an oxidation reaction, so that a color change behavior occurs, a shading state is formed, and a display effect can be improved.
When the display panel is in a display state, when the electrochromic layer is made of a cathode electrochromic material and the second control circuit applies voltage to the first transparent electrode and the second transparent electrode, the cathode electrochromic material has no electrons, is in a high valence state (oxidation state) and is in a light transmission state, so that the second control circuit applies different voltages to realize transparent display of the display panel with different transmittances; when no voltage is applied to the first transparent electrode and the second transparent electrode, the cathode electrochromic material can obtain electrons and generate reduction reaction, so that a color change behavior is generated, a shading state is formed, and the display effect can be improved.
When the display panel is in a non-display state, when the material of the electrochromic layer is an anode electrochromic material and the second control circuit does not apply voltage to the first transparent electrode and the second transparent electrode, the anode electrochromic material loses electrons and undergoes an oxidation reaction, so that a color change behavior occurs, a shading state is formed, and the shading function of the display panel is realized to prevent light leakage of the display panel in the non-display state. When the electrochromic layer is made of the cathode electrochromic material and the second control circuit does not apply voltage to the first transparent electrode and the second transparent electrode, the cathode electrochromic material can obtain electrons and generate a reduction reaction, so that a color change behavior is generated, a shading state is formed, and the shading function of the display panel is realized to prevent light leakage of the display panel in a non-display state.
In a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, when the organic light emitting display panel is in the display mode and the organic light emitting device emits light, the transmittance of the electrochromic structure is greater than 40%, so that the electrochromic device is controlled to be in the light-transmitting state, and the adjustment of different transmittances of the organic light emitting device can be realized according to the voltage input by the second control circuit.
In specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, when the organic light emitting display panel is in the display mode and the organic light emitting device emits light, the transmittance of the electrochromic structure is less than 10%, so that the electrochromic device can be controlled to be in the light-shielding state, and the brightness of the display panel can be improved.
In a specific implementation, in the organic light emitting display panel provided in the embodiment of the present invention, when the organic light emitting display panel is in the non-display mode and the organic light emitting device does not emit light, the transmittance of the electrochromic structure is less than 10%, so that the electrochromic device can be controlled to be in the light-shielding state, and the shielding function of the display panel can be better implemented to prevent light leakage of the display panel in the non-display state.
Based on the same inventive concept, an embodiment of the present invention further provides a method for manufacturing an organic light emitting display panel, as shown in fig. 4, including:
s401, forming a first driving control circuit and a second driving control circuit in a light emitting area;
s402, forming an organic light-emitting device electrically connected with the first drive control circuit in the light-emitting area and forming an electrochromic device electrically connected with the second drive control circuit in the transparent area respectively.
In specific implementation, in the preparation method provided by the embodiment of the present invention, the electrochromic device is prepared by using a physical vapor deposition method, and since the physical vapor deposition process may damage the organic light emitting layer, and the physical vapor deposition process may not damage the electrochromic layer, the electrochromic device is formed before the organic light emitting device is formed.
The following describes the method for fabricating the organic light emitting display panel in detail by using specific examples.
The preparation method of the organic light-emitting display panel comprises the following steps:
(1) forming a pattern of an active layer 002 and an active layer 002 ', a pattern of a gate 001 and a gate 001', and a pattern of a source 03, a drain 04, a source 03 'and a drain 04' in sequence on a substrate 1 by a one-step patterning process, i.e., forming a first driving control circuit 211 and a second driving control circuit 212, as shown in fig. 5A;
(2) forming a pattern of a passivation layer 005 over the source electrode 03, the drain electrode 04, the source electrode 03 ', and the drain electrode 04', as shown in fig. 5B;
(3) forming a pattern of a partition layer 08 above the passivation layer 005 to divide each pixel unit on the substrate 1 into an emission region 21 and a transparent region 22, and the first drive control circuit 211 and the second drive control circuit 212 are located in the emission region 21, as shown in fig. 5C;
(4) forming a reflective metal layer 01 electrically connected to the source electrode 03 over the passivation layer 005 of the light emitting region 21, as shown in fig. 5D;
(5) forming an anode 02 above the reflective metal layer 05 of the light emitting region 21 and a pattern of a first transparent electrode 05 in the transparent region 22 by a one-time patterning process; wherein the anode 02 is disconnected from the first transparent electrode 05 by a separation layer 08, as shown in fig. 5E;
(6) forming an electrochromic structure 06 including an electrochromic material 061, an electrolyte layer 062, and an ion storage layer 063 stacked in this order from bottom to top by physical vapor deposition over the first transparent electrode 05 of the transparent region 22, as shown in fig. 5F;
(7) forming a structure of the organic light emitting layer 03 over the anode 02 of the light emitting region 21, as shown in fig. 5G, wherein the electrochromic structure 06 and the organic light emitting layer 03 are disconnected by a partition layer 08, and each layer included in the organic light emitting layer 03 is the same as the existing one, which is not described herein again;
(8) forming a pattern of a second transparent electrode 07 above the electrochromic structure 06 and the organic light emitting layer 03 through a one-step patterning process; i.e., the cathode of the organic light emitting device 213 and the second transparent electrode of the electrochromic device 221, are common as shown in fig. 5H.
The organic light emitting display panel provided by the embodiment of the invention can be formed through the steps (1) to (8).
It should be noted that, in the above preparation method provided by the embodiment of the present invention, the patterning process may include a photolithography process and an etching step, and may also include other processes for forming a predetermined pattern, such as printing, inkjet printing, and the like; the photolithography process is a process of forming a pattern by using a photoresist, a mask plate, an exposure machine, and the like, including processes of film formation, exposure, development, and the like. In particular implementations, the corresponding patterning process may be selected based on the structure formed in the present invention.
Based on the same inventive concept, an embodiment of the present invention further provides a driving method of an organic light emitting display panel, including:
when the display module is in a display mode, the transparent area is controlled to be in a light shading state or a light transmitting state;
when in the non-display mode, the transparent area is controlled to be in a light shielding state.
In specific implementation, according to the display requirement, when the display panel is in a display state, different voltages are input to the electrochromic device through the second driving control circuit to adjust different transmittances of the electrochromic device, and when the electrochromic device is adjusted to be in a shading state, the display effect of the display panel can be improved, for example, the display panel is applied to an environment with strong light to improve the display effect of an OLED display screen; when the display panel is in a display state, and when the electrochromic device is adjusted to be in a light transmission state, the input voltage is different, and the transmittance of the electrochromic device is different, so that transparent display with different transmittances of the display panel can be realized, such as exhibition display, show window display and the like; when the display panel is in a non-display state, the voltage is input to the electrochromic device through the second drive control circuit to enable the electrochromic device to be in a light-shielding state, so that the shielding function of the display panel can be realized to prevent light leakage phenomenon of the display panel in the non-display state, such as shielding a curtain. Therefore, the organic light emitting display panel provided by the embodiment of the invention can flexibly adjust the state of the electrochromic structure according to the requirements of application scenes.
According to the driving method of the organic light-emitting display panel, when the display panel is in a display state, different voltages are input to the electrochromic device through the second driving control circuit to adjust different transmittances of the electrochromic device, when the electrochromic device is in a shading state, the display effect of the display panel can be improved, and when the electrochromic device is in a transmitting state, transparent display of the display panel with different transmittances can be realized; when the display panel is in a non-display state, the second drive control circuit inputs voltage to the electrochromic device to enable the electrochromic device to be in a light-shielding state, and the shielding function of the display panel is achieved to prevent light leakage of the display panel in the non-display state. Therefore, the driving method of the organic light-emitting display panel can adjust the transmittance of the transparent area according to the requirement to realize different display requirements, and has better flexibility.
Based on the same inventive concept, embodiments of the present invention further provide a display device, including any one of the organic light emitting display panels provided by embodiments of the present invention. The principle of the display device to solve the problem is similar to that of the organic light emitting display panel, so the implementation of the display device can be referred to the implementation of the organic light emitting display panel, and repeated details are not repeated herein.
In specific implementation, the display device provided in the embodiment of the present invention may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The implementation of the display device can be referred to the above embodiments of the organic light emitting display panel, and repeated descriptions are omitted.
The organic light-emitting display panel, the preparation method thereof, the driving method and the display device provided by the embodiment of the invention comprise a substrate and a plurality of pixel units which are arranged on the substrate in a matrix manner, wherein each pixel unit comprises a light-emitting area and a transparent area; wherein, the luminous zone includes: the driving circuit comprises a first driving control circuit, a second driving control circuit and an organic light-emitting device electrically connected with the first driving control circuit; the transparent region includes an electrochromic device electrically connected to the second drive control circuit. According to the invention, the organic light-emitting device and the electrochromic device are arranged in a horizontal structure, the thickness of the module is thinner, and the organic light-emitting device and the electrochromic device are respectively controlled to work through different drive control circuits, namely when the display panel is in a display state, different voltages are input to the electrochromic device through the second drive control circuit to adjust different transmittances of the electrochromic device, when the electrochromic device is in a shading state, the display effect of the display panel can be improved, and when the electrochromic device is in a light transmitting state, transparent display of the display panel with different transmittances can be realized; when the display panel is in a non-display state, the second drive control circuit inputs voltage to the electrochromic device to enable the electrochromic device to be in a light-shielding state, and the shielding function of the display panel is achieved to prevent light leakage of the display panel in the non-display state. Therefore, the organic light-emitting display panel can adjust the transmittance of the transparent area according to the requirement to realize different display requirements, and has better flexibility.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A method for manufacturing an organic light emitting display panel includes:
forming a plurality of pixel units arranged in a matrix on a substrate; each pixel unit comprises a luminous area and a transparent area;
forming a first drive control circuit and a second drive control circuit in a light emitting area of each pixel unit;
forming an organic light emitting device electrically connected to the first driving control circuit in the light emitting region, and forming an electrochromic device electrically connected to the second driving control circuit in the transparent region; wherein,
prior to forming the organic light emitting device and the electrochromic device, further comprising: forming a separation layer for separating the organic light emitting device and the electrochromic device;
forming the organic light emitting device and the electrochromic device, specifically including:
forming a reflective metal layer electrically connected to the first drive control circuit over the first drive control circuit after forming the separation layer;
forming an anode of the organic light-emitting device above the reflective metal layer of the light-emitting region and forming a first transparent electrode of the electrochromic device in the transparent region by a one-step composition process; wherein the first transparent electrode is electrically connected to the second drive control circuit;
forming an electrochromic structure of the electrochromic device on one side of the first transparent electrode, which is far away from the second drive control circuit, by adopting a physical vapor deposition method;
after the electrochromic structure is formed, forming an organic light emitting layer of the organic light emitting device on the side of the anode away from the first drive control circuit;
and forming a second transparent electrode above the electrochromic structure, and forming a cathode above the organic light-emitting layer.
2. The method according to claim 1, wherein a second transparent electrode is formed over the electrochromic structure, and a cathode is formed over the organic light-emitting layer, and specifically:
and forming the second transparent electrode and the cathode above the electrochromic structure and above the organic light emitting layer through a one-time patterning process.
3. The method according to claim 1, wherein an electrochromic structure of the electrochromic device is formed on a side of the first transparent electrode away from the second driving control circuit, and specifically comprises:
and sequentially forming an electrochromic layer, an electrolyte layer and an ion storage layer which are stacked on one side of the first transparent electrode far away from the second drive control circuit.
4. The method of manufacturing an organic light emitting display panel according to claim 3, wherein a material of the electrochromic layer is an anodic electrochromic material or a cathodic electrochromic material.
5. The method of claim 4, wherein the anodic electrochromic material comprises NiOX、IrOXOne or a combination thereof.
6. The method of claim 4, wherein the cathodic electrochromic material comprises WO3、MoO3One or a combination thereof.
7. The method of claim 1, wherein the transmittance of the electrochromic structure is greater than 40% when the organic light emitting device emits light.
8. The method of claim 1, wherein the transmittance of the electrochromic structure is less than 10% when the organic light emitting device emits light.
9. The method of claim 1, wherein the transmittance of the electrochromic structure is less than 10% when the organic light emitting device is not emitting light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868837.1A CN107644895B (en) | 2017-09-22 | 2017-09-22 | Organic light-emitting display panel, preparation method thereof, driving method thereof and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868837.1A CN107644895B (en) | 2017-09-22 | 2017-09-22 | Organic light-emitting display panel, preparation method thereof, driving method thereof and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107644895A CN107644895A (en) | 2018-01-30 |
| CN107644895B true CN107644895B (en) | 2020-05-12 |
Family
ID=61113860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710868837.1A Active CN107644895B (en) | 2017-09-22 | 2017-09-22 | Organic light-emitting display panel, preparation method thereof, driving method thereof and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107644895B (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336117A (en) * | 2017-09-30 | 2018-07-27 | 云谷（固安）科技有限公司 | Display screen and electronic equipment |
| WO2019062187A1 (en) | 2017-09-30 | 2019-04-04 | 云谷（固安）科技有限公司 | Display screen and electronic device |
| CN108365122A (en) * | 2017-09-30 | 2018-08-03 | 云谷（固安）科技有限公司 | Display screen and electronic equipment |
| CN108365123A (en) * | 2017-09-30 | 2018-08-03 | 云谷（固安）科技有限公司 | Display screen and electronic equipment |
| CN108899348A (en) * | 2018-07-09 | 2018-11-27 | 京东方科技集团股份有限公司 | Translucent display substrate and its driving method and transparent display |
| CN110942746B (en) | 2018-09-21 | 2022-07-01 | 北京小米移动软件有限公司 | Organic light emitting diode display screen, display control method and electronic equipment |
| CN110767693B (en) * | 2018-12-14 | 2022-07-19 | 昆山国显光电有限公司 | Array substrate, display screen and display terminal |
| CN109585521B (en) * | 2018-12-29 | 2019-10-25 | 成都中电熊猫显示科技有限公司 | A kind of display panel and display device |
| CN109742104B (en) * | 2019-01-03 | 2021-10-15 | 京东方科技集团股份有限公司 | Intelligent window |
| CN109742123B (en) * | 2019-01-10 | 2021-01-26 | 京东方科技集团股份有限公司 | Display substrate and display device |
| US11719989B2 (en) | 2019-05-16 | 2023-08-08 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and electrical apparatus with light transmittance adjustment layer |
| CN110164928B (en) * | 2019-05-16 | 2021-06-01 | 深圳市华星光电半导体显示技术有限公司 | Display panel and electronic device |
| CN110224080B (en) * | 2019-06-18 | 2021-12-10 | 京东方科技集团股份有限公司 | Transparent display panel, preparation method thereof and display device |
| CN110649074B (en) * | 2019-09-25 | 2021-10-01 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN110676300B (en) * | 2019-10-30 | 2022-02-22 | 武汉天马微电子有限公司 | Display panel, driving method thereof and display device |
| CN110752249B (en) * | 2019-11-20 | 2022-08-09 | 京东方科技集团股份有限公司 | Display device, control method thereof and display panel |
| CN111029333B (en) * | 2019-11-22 | 2021-10-26 | 深圳市奥拓电子股份有限公司 | Promote LED lamp pearl and LED display screen of display effect |
| CN111063720B (en) * | 2019-12-30 | 2022-07-05 | 厦门天马微电子有限公司 | Display panel and display device |
| CN111833720B (en) * | 2020-01-13 | 2021-08-31 | 昆山国显光电有限公司 | Display panel and display device |
| CN111158138B (en) * | 2020-02-26 | 2022-03-29 | 京东方科技集团股份有限公司 | Display module and display device |
| CN112490276A (en) * | 2020-12-11 | 2021-03-12 | 京东方科技集团股份有限公司 | Organic light emitting display panel and display device |
| CN113724589B (en) * | 2021-08-20 | 2023-05-30 | 惠州华星光电显示有限公司 | Display screen and display device |
| CN114063818A (en) * | 2021-11-10 | 2022-02-18 | 昆山工研院新型平板显示技术中心有限公司 | Display panel, control method and control device |
| CN117223412A (en) * | 2022-02-28 | 2023-12-12 | 京东方科技集团股份有限公司 | Display panel, display device and manufacturing method of display panel |
| CN114975537B (en) * | 2022-04-25 | 2024-08-02 | 上海天马微电子有限公司 | Display panel, display device and control method of display panel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985729A (en) * | 2013-02-12 | 2014-08-13 | 三星显示有限公司 | Organic light emitting display device |
| CN104216192A (en) * | 2014-09-16 | 2014-12-17 | 哈尔滨工业大学 | Preparation method of novel fast-response high-contrast electrochromic device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6577224B2 (en) * | 2015-04-23 | 2019-09-18 | 株式会社ジャパンディスプレイ | Display device |
-
2017
- 2017-09-22 CN CN201710868837.1A patent/CN107644895B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985729A (en) * | 2013-02-12 | 2014-08-13 | 三星显示有限公司 | Organic light emitting display device |
| CN104216192A (en) * | 2014-09-16 | 2014-12-17 | 哈尔滨工业大学 | Preparation method of novel fast-response high-contrast electrochromic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107644895A (en) | 2018-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107644895B (en) | Organic light-emitting display panel, preparation method thereof, driving method thereof and display device | |
| JP6959337B2 (en) | Display panel and its manufacturing method | |
| CN104834146B (en) | A kind of display device, its production method, its driving method and display device | |
| CN109273518A (en) | Display base plate and its manufacturing method, display device and its control method | |
| WO2015067047A1 (en) | Display panel and manufacturing method thereof, and display device | |
| US11271051B2 (en) | Light source panel and display device | |
| EP2991121B1 (en) | Array substrate, method for manufacturing array substrate and display device | |
| TWI441328B (en) | Pixel structure of active matrix organic electroluminescent display panel and method of making the same | |
| CN102723445A (en) | OLED (organic light-emitting diode) display unit and OLED spliced display screen with same | |
| CN110676293A (en) | Color film substrate, display panel and preparation method thereof | |
| KR20020025862A (en) | Organic el display | |
| EP3506379B1 (en) | Oled device and manufacturing method therefor, display panel, and display apparatus | |
| CN111399270B (en) | Double-sided display and manufacturing method thereof | |
| CN112885978A (en) | Display panel and display device | |
| US10317587B2 (en) | Fabrication method of color filter substrate, color filter substrate and display device | |
| CN108983528A (en) | Pixel unit and its manufacturing method, display control method, display panel | |
| CN108336122A (en) | A kind of display module, display system and display system production method | |
| CN109148536B (en) | Sub-pixel structure, manufacturing method, array substrate and display device | |
| CN101752401B (en) | Double-sided display device and manufacturing method thereof | |
| CN114864637A (en) | Display panel, display device and manufacturing method of display panel | |
| CN113725270A (en) | Display substrate, preparation method thereof and display device | |
| CN111883570B (en) | Display panel, display device and control method of display panel | |
| CN110767683B (en) | Display panel, mask and display terminal | |
| CN103399443B (en) | Electrochromic display panel and preparation method thereof, display device | |
| JP2010049254A (en) | Liquid crystal display with split electrode structure |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |