CN113437114A - Display device and preparation method thereof - Google Patents
Display device and preparation method thereof Download PDFInfo
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- CN113437114A CN113437114A CN202110611748.5A CN202110611748A CN113437114A CN 113437114 A CN113437114 A CN 113437114A CN 202110611748 A CN202110611748 A CN 202110611748A CN 113437114 A CN113437114 A CN 113437114A
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- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 230000007958 sleep Effects 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005059 dormancy Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
-
- 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
- H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to a display device and a preparation method thereof. The display device includes: the display device comprises a substrate, a first display panel, a flat layer and a second display panel. The first display panel is an inorganic LED display panel or an inorganic EL display panel, and the long-life performance of the inorganic LED display panel or the inorganic EL display panel is utilized, so that when the second display panel is dormant, the first display panel can be lightened for a long time without continuously moving display contents, the display contents can be conveniently read, and the long-time screen-saving display function is realized.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device and a preparation method thereof.
Background
Electronic displays (electronic displays) refer to information display devices that use electronic technology to change an imperceptible signal into a perceptible signal. The electronic display has the advantages of small occupied space, flexible and variable display format, capability of comprehensively displaying various information and the like.
For mobile electronic displays such as mobile phones and smart watches, people want to be able to realize the function of screen alarm, i.e. to still be able to display the contents of time, notification, information, weather, etc. when the mobile phones and smart watches are in standby.
At present, in order to prevent a screen burn-in phenomenon caused by that display pixels are lit for a long time, when a screen display function is implemented in an intelligent terminal equipped with an Organic Light-Emitting display panel (abbreviated as OLED), on one hand, display contents can be continuously moved, and the same position is prevented from being lit for a long time. However, in the design, the display content is continuously moved when the screen is turned off for display, so that the user cannot accurately identify the display content, and the user experience is influenced. On the other hand, a certain time threshold is set, and the display is turned off after the time threshold is exceeded. However, the design cannot really realize the long-time information display function. Therefore, a new display device and an electronic apparatus are needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a display device and a preparation method thereof, which can solve the problems that a user cannot accurately identify display content, the user experience is poor, the long-time screen display function cannot be really realized and the like in the conventional display device.
In order to solve the above problems, the present invention provides a display device including: a substrate; a first display panel disposed on a surface of one side of the substrate; the first display panel is an inorganic LED display panel or an inorganic EL display panel; the flat layer covers the substrate around the first display panel; the second display panel is arranged on the surface of one side, away from the substrate, of the first display panel and extends to cover the flat layer; the second display panel is an organic light emitting display panel; when the second display panel enters a display state, the first display panel enters a dormant state; and when the second display panel enters the dormant state, the first display panel enters the display state.
Further, the first display panel includes: a first TFT line layer disposed on a surface of one side of the substrate; the first TFT circuit layer is arranged on the surface of one side, far away from the substrate, of the first TFT circuit layer at intervals; the first light emitting unit is an inorganic LED light emitting unit or an inorganic EL light emitting unit.
Further, the second display panel includes: the second TFT circuit layer is arranged on the surface of one side of the first display panel, which is far away from the substrate, and extends to cover the flat layer; the second TFT circuit layer is arranged on the surface of one side, far away from the substrate, of the second TFT circuit layer at intervals; the second light emitting unit is an organic light emitting unit.
Further, the projection of the second TFT circuit layer on the first display panel is staggered with the first light emitting unit.
Further, the surface of one side, away from the substrate, of the flat layer is flush with the surface of one side, away from the substrate, of the first display panel.
Further, the driving mode of the first display panel is passive address selection driving or active address selection driving.
Further, the light transmittance of the second display panel ranges from 60% to 100%.
In order to solve the above problems, the present invention also provides a method for manufacturing a display device, comprising the steps of: providing a substrate; preparing a first display panel on a surface of one side of the substrate, wherein the first display panel is an inorganic LED display panel or an inorganic EL display panel; preparing a planarization layer on the substrate around the first display panel; preparing a second display panel on the surface of one side of the first display panel, which is far away from the substrate, wherein the second display panel extends and covers the flat layer; the second display panel is an organic light emitting display panel.
Further, the preparing step of the first display panel comprises: preparing a first TFT circuit layer on the surface of one side of the substrate; preparing at least one first light-emitting unit on the surface of one side, far away from the substrate, of the first TFT circuit layer at intervals; the first light emitting unit is an inorganic LED light emitting unit or an inorganic EL light emitting unit.
Further, the second display panel is prepared by the steps of: preparing a second TFT circuit layer on the surface of one side of the first display panel, which is far away from the substrate, wherein the second TFT circuit layer extends and covers the flat layer; preparing at least one second light-emitting unit on the surface of one side, far away from the substrate, of the second TFT circuit layer at intervals; the second light emitting unit is an organic light emitting unit.
The invention has the advantages that: the invention relates to a display device and a preparation method thereof.A first display panel is arranged between a second display panel and a substrate, when the second display panel enters a display state, the first display panel enters a dormant state, and the first display panel does not influence the display of the second display panel; when the second display panel enters the dormant state, the first display panel enters the display state, and at the moment, the first display panel is utilized to realize the screen-turning display function of the display device. The first display panel is an inorganic LED display panel or an inorganic EL display panel, and the long-life performance of the inorganic LED display panel or the inorganic EL display panel is utilized, so that when the second display panel is dormant, the first display panel can be lightened for a long time without continuously moving display contents, the display contents can be conveniently read, and the long-time screen-saving display function is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an exploded view of a display device of the present invention;
FIG. 2 is a schematic cross-sectional view A-A of the display device of FIG. 1;
FIG. 3 is a diagram illustrating a process for manufacturing a display device according to the present invention;
FIG. 4 is a schematic structural view of a first TFT wiring layer formed on a substrate;
FIG. 5 is a schematic plan view of a first TFT wiring layer formed on a substrate;
fig. 6 is a schematic structural view of a first light emitting unit fabricated on a first TFT wiring layer;
fig. 7 is a schematic plan view of a first light emitting unit fabricated on a first TFT wiring layer;
FIG. 8 is a schematic view of a structure for ink-jet printing a planarization layer material on a first display panel and a substrate surrounding the first display panel;
FIG. 9 is a schematic diagram of the structure after removing the planarization layer material on the first display panel;
fig. 10 is a schematic structural view of a second TFT circuit layer formed on the first display panel and the planarization layer.
Description of reference numerals:
100. a display device;
1. a substrate; 2. A first display panel;
3. a planarization layer; 4. A second display panel;
21. a first TFT line layer; 22. A first light emitting unit;
41. a second TFT line layer; 42. A second light emitting unit.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to make and use the present invention in a complete manner, and is provided for illustration of the technical disclosure of the present invention so that the technical disclosure of the present invention will be more clearly understood and appreciated by those skilled in the art how to implement the present invention. The present invention may, however, be embodied in many different forms of embodiment, and the scope of the present invention should not be construed as limited to the embodiment set forth herein, but rather construed as being limited only by the following description of the embodiment.
The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are used for explaining and explaining the present invention, but not for limiting the scope of the present invention.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. In addition, the size and thickness of each component shown in the drawings are arbitrarily illustrated for convenience of understanding and description, and the present invention is not limited to the size and thickness of each component.
As shown in fig. 1 and 2, the present embodiment provides a display device 100. The display device 100 includes: the display device comprises a substrate 1, a first display panel 2, a flat layer 3 and a second display panel 4.
In this embodiment, the substrate 1 is a glass substrate. In other embodiments, the substrate 1 may also be a flexible substrate, so as to have a better impact resistance, effectively protect the display device 100, and improve the flexibility of the display device 100.
As shown in fig. 1 and 2, the first display panel 2 is disposed on a surface of one side of the substrate 1. The driving method of the first display panel 2 may adopt Passive addressing driving (PM for short) or Active addressing driving (AM for short). Since the first display panel 2 in this embodiment is only used to display the time, notification, information, weather, and other contents when the second display panel 4 is in sleep, the first display panel 2 is driven by the PM driving, which is simple.
The first display panel 2 is an inorganic LED display panel or an inorganic EL display panel. Utilize inorganic LED display panel or inorganic EL display panel's long-life performance, and then when second display panel 4 dormancy, first display panel 2 can light for a long time, need not constantly remove the display content, is convenient for be used for reading the display content, realizes long-time screen display function of breathing out.
As shown in fig. 2, the first display panel 2 includes: a first TFT wiring layer 21, and at least one first light emitting cell 22.
Wherein a first TFT wiring layer 21 is disposed on a surface of one side of the substrate 1; at least one first light emitting unit 22 is disposed on a surface of the first TFT circuit layer 21 on a side away from the substrate 1 at an interval. The first light emitting unit 22 is an inorganic LED light emitting unit or an inorganic EL light emitting unit. Utilize inorganic LED luminescence unit or inorganic EL luminescence unit preparation to form inorganic LED display panel or inorganic EL display panel, utilize inorganic LED display panel or inorganic EL display panel's long life performance, and then when second display panel 4 dormancy, first display panel 2 can light for a long time, need not constantly remove the display content, be convenient for be used for reading the display content, realize long-time information screen display function.
As shown in fig. 2, a planarization layer 3 covers the substrate 1 around the first display panel 2. The surface of the side of the flat layer 3 away from the substrate 1 is flush with the surface of the side of the first display panel 2 away from the substrate 1. Therefore, a finished plane can be provided for the preparation of the second display panel 4, and uneven internal stress of the second display panel 4 and cracks are prevented from being generated to further influence the display performance of the second display panel.
The material of the planarization layer 3 may be Polyimide (PI) or PFA (Perfluoroalkoxy, chinese: tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer). Thereby, the flat layer 3 has a certain flexibility, which may increase the flexibility performance of the display device 100.
Wherein, the thickness range of the flat layer 3 is 1um-4 um. When the thickness of the planarization layer 3 is less than 1um, the effect that the surface of the side of the planarization layer 3 away from the substrate 1 is flush with the surface of the side of the first display panel 2 away from the substrate 1 may not be achieved; when the thickness of the planarization layer 3 is greater than 4um, the thickness of the display device 100 may be increased, which may increase the production cost of the display device. Preferably, the thickness of the flat layer 3 is 2 um.
As shown in fig. 2, the second display panel 4 is disposed on a surface of the first display panel 2 away from the substrate 1, and extends over the planarization layer 3. The second display panel 4 is an organic light emitting display panel.
As shown in fig. 2, the second display panel 4 includes: a second TFT wiring layer 41, and at least one second light emitting unit 42.
The second TFT circuit layer 41 is disposed on a surface of the first display panel 2 on a side away from the substrate 1, and extends to cover the planarization layer 3; at least one second light emitting unit 42 is arranged on the surface of the second TFT circuit layer 41 on the side far from the substrate 1 at intervals; the second light emitting unit 42 is an organic light emitting unit.
Wherein, the projection of the second TFT circuit layer 41 on the first display panel 2 is staggered with the first light-emitting unit 22. Therefore, the second TFT circuit layer 41 is prevented from shielding the first light emitting unit 22, and the display of the first display panel 2 is prevented from being affected.
Wherein, the light transmittance of the second display panel 4 ranges from 60% to 100%. Thereby, when the second display panel 4 enters the sleep-mode, the display content of the first display panel 2 therebelow is easily recognized by the user through the second display panel 4.
In this embodiment, the first display panel 2 is disposed between the second display panel 4 and the substrate 1, when the second display panel 4 enters a display state, the first display panel 2 enters a sleep state, and the first display panel 2 does not affect the display of the second display panel 4; when the second display panel 4 enters the sleep mode, the first display panel 2 enters the display mode, and the first display panel 2 is used to implement the screen saver display function of the display device 100.
As shown in fig. 2 to fig. 10, the present embodiment further provides a method for manufacturing the display device 100 of the present embodiment, which includes the following steps: s1, providing a substrate 1; s2, preparing a first display panel 2 on a surface of one side of the substrate 1, the first display panel 2 being an inorganic LED display panel or an inorganic EL display panel; s3, preparing a planarization layer 3 on the substrate 1 around the first display panel 2; and S4, preparing a second display panel 4 on the surface of the first display panel 2 on the side far away from the substrate 1, wherein the second display panel 4 extends and covers the flat layer 3; the second display panel 4 is an organic light emitting display panel.
As shown in fig. 3 to 7, the first display panel 2 is prepared by the steps of: preparing a first TFT wiring layer 21 on a surface of one side of the substrate 1; and preparing at least one first light-emitting unit 22 at intervals on the surface of the first TFT circuit layer 21 on the side away from the substrate 1; the first light emitting unit 22 is an inorganic LED light emitting unit or an inorganic EL light emitting unit.
As shown in fig. 8 and 9, the step of preparing the planarization layer 3 includes: ink-jet printing of a flat layer material on the first display panel 2 and the substrate 1 around the first display panel 2, then, polishing of the flat layer material by using a polishing technology, and removal of the flat layer material on the first display panel 2, wherein the surface of the flat layer 3 on the side far away from the substrate 1 is flush with the surface of the first display panel 2 on the side far away from the substrate 1.
As shown in fig. 10 and 3, the second display panel 4 is prepared by the steps of: preparing a second TFT circuit layer 41 on the surface of one side of the first display panel 2, which is far away from the substrate 1, wherein the second TFT circuit layer 41 extends to cover the flat layer 3; and at least one second light-emitting unit 42 is prepared on the surface of the second TFT circuit layer 41 at the side far away from the substrate 1 at intervals; the second light emitting unit 42 is an organic light emitting unit.
The display device and the manufacturing method thereof provided by the present application are described in detail above, and the principle and the embodiment of the present application are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display device, comprising:
a substrate;
a first display panel disposed on a surface of one side of the substrate; the first display panel is an inorganic LED display panel or an inorganic EL display panel;
the flat layer covers the substrate around the first display panel; and
the second display panel is arranged on the surface of one side, away from the substrate, of the first display panel and extends to cover the flat layer; the second display panel is an organic light emitting display panel;
when the second display panel enters a display state, the first display panel enters a dormant state;
and when the second display panel enters the dormant state, the first display panel enters the display state.
2. The display device according to claim 1, wherein the first display panel comprises:
a first TFT line layer disposed on a surface of one side of the substrate; and
the first light-emitting units are arranged on the surface of one side, away from the substrate, of the first TFT circuit layer at intervals; the first light emitting unit is an inorganic LED light emitting unit or an inorganic EL light emitting unit.
3. The display device according to claim 2, wherein the second display panel comprises:
the second TFT circuit layer is arranged on the surface of one side of the first display panel, which is far away from the substrate, and extends to cover the flat layer; and
at least one second light-emitting unit, which is arranged on the surface of one side of the second TFT circuit layer far away from the substrate at intervals; the second light emitting unit is an organic light emitting unit.
4. The display device according to claim 3, wherein projections of the second TFT line layers on the first display panel are arranged alternately with the first light-emitting units.
5. The display device according to claim 1, wherein a surface of a side of the planarization layer away from the substrate is flush with a surface of a side of the first display panel away from the substrate.
6. The display device according to claim 1, wherein the first display panel is driven in a passive addressing mode or an active addressing mode.
7. The display device according to claim 1, wherein the second display panel has a light transmittance ranging from 60% to 100%.
8. A method for manufacturing a display device, comprising the steps of:
providing a substrate;
preparing a first display panel on a surface of one side of the substrate, wherein the first display panel is an inorganic LED display panel or an inorganic EL display panel;
preparing a planarization layer on the substrate around the first display panel; and
preparing a second display panel on the surface of one side of the first display panel, which is far away from the substrate, wherein the second display panel extends and covers the flat layer; the second display panel is an organic light emitting display panel.
9. The method according to claim 8, wherein the step of preparing the first display panel comprises:
preparing a first TFT circuit layer on the surface of one side of the substrate; and
preparing at least one first light-emitting unit on the surface of one side, far away from the substrate, of the first TFT circuit layer at intervals; the first light emitting unit is an inorganic LED light emitting unit or an inorganic EL light emitting unit.
10. The method for manufacturing a display device according to claim 8, wherein the second display panel is manufactured by:
preparing a second TFT circuit layer on the surface of one side of the first display panel, which is far away from the substrate, wherein the second TFT circuit layer extends and covers the flat layer; and
preparing at least one second light-emitting unit on the surface of one side, far away from the substrate, of the second TFT circuit layer at intervals; the second light emitting unit is an organic light emitting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110611748.5A CN113437114B (en) | 2021-06-02 | 2021-06-02 | Display device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110611748.5A CN113437114B (en) | 2021-06-02 | 2021-06-02 | Display device and preparation method thereof |
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| CN113437114A true CN113437114A (en) | 2021-09-24 |
| CN113437114B CN113437114B (en) | 2022-12-06 |
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| CN111243534A (en) * | 2020-03-04 | 2020-06-05 | 京东方科技集团股份有限公司 | Display panel, display device, control method thereof, and storage medium |
| CN111596484A (en) * | 2020-06-01 | 2020-08-28 | 武汉华星光电技术有限公司 | Color film substrate and display panel |
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2021
- 2021-06-02 CN CN202110611748.5A patent/CN113437114B/en active Active
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| CN101806962A (en) * | 2010-02-05 | 2010-08-18 | 青岛海信移动通信技术股份有限公司 | Display method, display system and mobile device |
| JP2013109907A (en) * | 2011-11-18 | 2013-06-06 | Sharp Corp | Phosphor substrate and display device |
| CN106101431A (en) * | 2016-06-30 | 2016-11-09 | 努比亚技术有限公司 | A kind of mobile terminal and display packing thereof |
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| CN110890024A (en) * | 2019-12-09 | 2020-03-17 | 上海传英信息技术有限公司 | Display assembly and terminal equipment |
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| CN113437114B (en) | 2022-12-06 |
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