CN111834540A - Display panel and terminal - Google Patents
Display panel and terminal Download PDFInfo
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- CN111834540A CN111834540A CN202010200185.6A CN202010200185A CN111834540A CN 111834540 A CN111834540 A CN 111834540A CN 202010200185 A CN202010200185 A CN 202010200185A CN 111834540 A CN111834540 A CN 111834540A
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- 238000002834 transmittance Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/813—Anodes characterised by their shape
-
- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
-
- 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
- H10K59/17—Passive-matrix OLED displays
- H10K59/179—Interconnections, e.g. wiring lines or terminals
Abstract
The invention relates to the technical field of display, and discloses a display panel and a terminal. Wherein, the display panel includes: the light transmittance of the first display area is greater than that of the second display area; the anode layer comprises a plurality of first anodes arranged in the first display area and a plurality of second anodes arranged in the second display area, and the area of the orthographic projection of the first anodes in the stacking direction of the display panel is smaller than that of the second anodes in the stacking direction of the display panel; a cathode layer including a first cathode and a second cathode insulated from each other; the first cathode is arranged in the first display area and electrically connected with the first display area, and the second cathode is arranged in the second display area and electrically connected with the second display area. Compared with the prior art, the display panel and the terminal provided by the embodiment of the invention have the advantage that the service life of the display panel is prolonged.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a terminal.
Background
The full screen technology and the full screen terminal are one of the most popular technologies at present, and are popular and sought after by the majority of users. The full screen technology is a relatively broad definition of the ultra-high screen ratio terminal design in the display industry. The explanation is that the front side of the terminal is completely provided with the screen, the display interface of the terminal is completely covered by the screen, and the four frame positions of the terminal are designed in a frame-free mode, so that the ultrahigh screen occupation ratio close to 100% is pursued. Since the full-face screen occupies the entire front face of the terminal, devices such as a front camera are generally arranged under the screen in the prior art, namely, the camera under the screen. In order to ensure the normal work of the camera under the screen, when the terminal shoots, the display area covering the camera under the screen can be changed into a transparent state, so that the incidence of light rays is ensured.
However, the inventor of the present invention has found that the cathode voltage of different display areas in the display panel in the prior art is different due to the larger resistivity of the cathode and the voltage drop is larger, and some display areas operate in the linear area for a long time due to the lower cathode voltage, which results in a shortened service life, for example, the service life of the transparent display area is significantly shorter than that of other non-transparent display areas. How to effectively prolong the service life of the display panel becomes a problem to be solved urgently.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a display panel and a terminal, so that the service life of the display panel is prolonged.
To solve the above technical problem, an embodiment of the present invention provides a display panel including: the display panel comprises a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area; the anode layer comprises a plurality of first anodes arranged in the first display area and a plurality of second anodes arranged in the second display area, and the area of the orthographic projection of the first anodes in the stacking direction of the display panel is smaller than that of the second anodes in the stacking direction of the display panel; a cathode layer including a first cathode and a second cathode insulated from each other; the first cathode is arranged in the first display area and electrically connected with the first display area, and the second cathode is arranged in the second display area and electrically connected with the second display area.
An embodiment of the present invention further provides a terminal, including: such as the display panel described above.
Compared with the prior art in which a plurality of anodes share a whole cathode, the cathode layer is provided to include two first cathodes and two second cathodes arranged at intervals, the first cathodes are arranged in the first display area and electrically connected with the first display area, the second cathodes are arranged in the second display area and electrically connected with the second display area, the first display area is independently powered by the first cathodes, the second display area is independently powered by the second cathodes, and when the cathodes of the first display area and the second display area are powered, voltage drops are not generated on the cathodes of other areas, so that the cathode voltage value of each area in the display panel is not too small, the first display area or the second display area is prevented from working in a linear area, and the service life of the display panel is prolonged.
Preferably, the device further comprises a first power line electrically connected to the first cathode; a second power line electrically connected to the second cathode; the resistivity of the first power line is smaller than the resistivity of the second power line. The resistivity of the first power line is smaller than that of the second power line, and under the condition that the lengths of the first power line and the second power line are the same, the voltage drop of the first power line is smaller than that of the second power line, so that the voltage of the first anode with a smaller area is increased, the first display area is prevented from working in a linear area, and the service life of the display panel is further prolonged.
Preferably, the width of the first power line is greater than the width of the second power line. Under the condition that the length is the same, the width of the first power line is larger than that of the second power line, so that the voltage drop of the first power line is smaller than that of the second power line, the voltage of the first anode with a smaller area is increased, the first display area is prevented from working in a linear area, and the service life of the display panel is further prolonged.
Preferably, the width of the first power line is greater than 20 micrometers. The larger the width is, under the condition that thickness and length are the same, the smaller the resistance is, the width of setting up first power cord is all greater than 20 microns, can effectually guarantee that the resistance value of first power cord is less, and the produced voltage drop of further reduction first power cord promotes the cathode voltage in first display area, further promotion display panel's life.
Preferably, the display panel further includes a pixel circuit, and the first power line and the source metal layer of the pixel circuit are manufactured in the same process step. The first power line and the source metal layer of the pixel circuit are manufactured in the same process step, so that the process steps can be effectively simplified, and the manufacturing cost of the display panel is reduced.
Preferably, the method further comprises the following steps: a cathode power supply structure including a first power source electrically connected to the first power line, and a second power source electrically connected to the second power line. The first power is connected with the first power line electricity via the first power line, and the second power is connected with the second power line electricity via the second power line to supply power to first display area and second display area respectively through first power and second power, further avoid the influence each other between the cathode voltage of first display area and second display area, further promotion display panel's life.
Preferably, the first power supply voltage is greater than or equal to 2 volts and less than or equal to 4 volts. So set up, can avoid the magnitude of voltage of first negative pole too high when guaranteeing that first negative pole work is in the saturation region, further promotion display panel's life.
Preferably, the first power supply is a direct current power supply.
Preferably, the method further comprises the following steps: a third display area adjacent to the first display area and/or the second display area; the cathode layer includes a third cathode electrically connected to the third display region. And the third electrode supplies power to each third display area respectively, so that the cathode layer of the display panel is further refined, the voltage drop of the cathode voltage of each third display area is reduced, and the service life of the display panel is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a terminal according to a fourth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a display panel, which is specifically configured as shown in fig. 1, and includes: a first display region 10, a second display region 20, an anode layer 30 and a cathode layer 40, wherein the light transmittance of the first display region is greater than that of the second display region; the anode layer 30 includes a plurality of first anodes 31 disposed in the first display region 10 and a plurality of second anodes 32 disposed in the second display region 20, and an area of an orthogonal projection of the first anodes 31 in a display panel stacking direction is smaller than an area of an orthogonal projection of the second anodes 32 in the display panel stacking direction; the cathode layer 40 includes a first cathode 41 and a second cathode 42 insulated from each other; the first cathode 41 is disposed in the first display region 10 and electrically connected to the first display region 10, and the second cathode 42 is disposed in the second display region 20 and electrically connected to the second display region 20.
Compared with the prior art, the display panel provided in the first embodiment of the present invention includes the cathode layer 40 including the first cathode 41 and the second cathode 42 spaced apart from each other, wherein the first cathode 41 is electrically connected to the first display region 10, and the second cathode 42 is electrically connected to the second display region 20. That is, the first display area 10 is separately powered by the first cathode 41, the second display area 20 is separately powered by the second cathode 42, and when the cathodes of the first display area 10 and the second display area 20 are powered, the current does not need to flow through the cathodes of other areas, and the cathode voltage drop is not generated, so that the cathode voltage values of the first display area 10 and the second display area 20 are not too small, the first display area or the second display area is prevented from working in the linear area, and the service life of the display panel is prolonged.
Further, in the present embodiment, the cathode-type power supply device further includes a first power line 50 electrically connected to the first cathode 41, and a second power line 60 electrically connected to the second cathode 42, and both the first power line 50 and the second power line 60 are electrically connected to the cathode power supply structure 70. Wherein the resistivity of the first power line 50 is smaller than the resistivity of the second power line 60. The resistivity of the first power line 50 is smaller than that of the second power line 60, and the voltage drop of the first power line 50 is smaller than that of the second power line 60 under the condition of the same length, so that the voltage of the first anode 31 with a smaller area is increased, the first display area 10 is prevented from working in a linear area, and the service life of the display panel is further prolonged. It is to be understood that the foregoing method for reducing the voltage drop of the first power line 50 is only an example and is not limited to the foregoing method, and in other embodiments of the present invention, the method for setting the width of the first power line 50 to be larger than the width of the second power line 60 may be used. Under the condition of the same length, the width of the first power line 50 is greater than the width of the second power line 50, and the voltage drop of the first power line 50 can be smaller than the voltage drop of the second power line 60, so that the voltage of the first anode 31 with a smaller area is increased, the first display area 10 is prevented from operating in a linear area, and the service life of the display panel is further prolonged. It should be noted that, the two methods for reducing the voltage drop of the second power line 50 are not contradictory, and in actual use, the resistivity of the first power line 50 may be set smaller than the resistivity of the second power line 60, and the width of the first power line 50 may be set larger than the width of the second power line 60.
Preferably, in the present embodiment, the width of the first power line 50 is greater than 20 micrometers. The resistance value of the first power line 50 is ensured to be smaller, the voltage drop generated by the first power line 50 is reduced, the cathode voltage of the first display area 10 is increased, and the service life of the display panel is further prolonged. It is understood that, based on the same principle, in the present embodiment, the width of the second power line 60 is set to be greater than 20 micrometers, which can also reduce the voltage drop generated by the second power line 60, raise the cathode voltage of the second display area 20, and further improve the service life of the display panel.
Preferably, in the present embodiment, the resistivity of the first power line 60 is smaller than the resistivity of the second cathode 42. The resistivity that sets up first power cord 60 is less than the resistivity of second negative pole 42, can guarantee that the resistance of first power cord 60 is less, and the pressure drop is less, and then when effectively guaranteeing to supply power to first display area 10, can not lead to the negative pole voltage of first display area 10 less because produce great pressure drop on first power cord 60, further promotion display panel's life. It is understood that, based on the same principle, in the present embodiment, the resistivity of the second power line 70 is set to be smaller than the resistivity of the first cathode 41, which can also improve the service life of the display panel.
Further, in the present embodiment, the first power line 50 and the second power line 60 are both disposed on the source metal layer of the display panel. It is understood that the first power line 50 and the second power line 60 are disposed on the source metal layer of the display panel only by way of specific example in this embodiment, and are not limited thereto.
Preferably, in this embodiment, the display panel further includes a pixel circuit (not shown), and the first power line 50 is formed in the same process step as a source metal layer of the pixel circuit. The first power line 50 and the source metal layer of the pixel circuit are manufactured in the same process step, so that the process steps can be effectively simplified, and the manufacturing cost of the display panel can be reduced.
Further, in the present embodiment, when the first power supply line 50 and the second power supply line 60 have a cross point at the same layer, they are arranged by a jumper method to ensure that the first power supply line 50 and the second power supply line 60 are arranged to be insulated from each other. That is, the first power line 50 is disposed above the second power line 60 at the intersection or the first power line 50 is disposed below the second power line 60, separated by an insulating layer. It should be understood that the foregoing is merely an example of a specific method for providing the first power line 50 and the second power line 60 in the present embodiment, and the present invention is not limited thereto, and in other embodiments of the present invention, other methods such as providing images to avoid the existence of a cross point between the first power line 50 and the second power line 60 may be used, and the method is not described herein, and in particular, flexible arrangement may be performed according to actual needs.
A second embodiment of the present invention relates to a display panel. The second embodiment is substantially the same as the first embodiment, and includes a first display region 10, a second display region 20, … …, a first cathode 41, a second cathode 42, and the like, and is mainly different in that: in the second embodiment of the present invention, as shown in fig. 2, the cathode power supply structure 70 includes a first power supply 71 electrically connected to the first power line 50, and a second power supply 72 electrically connected to the second power line 60.
Compared with the prior art, in the display panel provided by the second embodiment of the present invention, while maintaining all technical effects of the first embodiment, the cathode power supply structure 70 is provided to include the first power supply 71 and the second power supply 72, the first power supply 71 is electrically connected to the first power line 50, and the second power supply 72 is electrically connected to the second power line 60, so that the first cathode 41 and the second cathode 42 are respectively supplied with power by the first power supply 71 and the second power supply 72, the influence of the first cathode 41 and the second cathode 42 on each other is further reduced, the first cathode 41 and the second cathode 42 can both normally supply voltage, and the service life of the display panel is prolonged.
Specifically, in the present embodiment, the first power supply 71 and the second power supply 72 are both dc power supplies.
Preferably, in the present embodiment, the voltage value of the first power supply 71 is greater than or equal to 2 volts and less than or equal to 4 volts. Setting the voltage value of the first power source 71 to be greater than or equal to 2 volts and less than or equal to 4 volts can prevent the voltage value of the first cathode 41 from being excessively high while ensuring that the first display region 10 operates in the saturation region. Thereby further improving the service life of the display panel. It should be understood that the voltage of the first power source 71 being greater than or equal to 2 volts and less than or equal to 4 volts is only a specific example in the present embodiment, and is not limited thereto. Preferably, in the present embodiment, the voltage of the first power supply 71 is 3 volts.
Preferably, in the present embodiment, the voltage value of the second power supply 72 is greater than or equal to 2 volts and less than or equal to 4 volts. Further, the voltage value of the second power source 72 may be equal to the voltage value of the first power source 71, or may be slightly larger or smaller than the voltage value of the first power source 71. It can be flexibly set according to the voltage drop of the first cathode 41 and the second cathode 42, when the voltage drop of the first cathode 41 is less than that of the second cathode 42, the voltage value of the second power supply 72 can be set to be slightly greater than that of the first power supply 71; when the voltage drop of the first cathode 41 is greater than that of the second cathode 42, the voltage value of the second power supply 72 may be set slightly smaller than that of the first power supply 71, and may be flexibly set according to actual needs.
A third embodiment of the present invention relates to a display panel. The third embodiment is substantially the same as the first embodiment, and includes a first display area 10, a second display area 20, … …, a first cathode 41, a second cathode 42, and the like, and is mainly different in that: in the first embodiment, the display panel includes only two display regions, the first display region 10 and the second display region 20. In the third embodiment of the present invention, as shown in fig. 3, the display panel further includes a third display region 80 adjacent to the first display region 10 and/or the second display region 20, and the cathode layer 40 further includes a third cathode 43. Wherein the third cathode 43 is electrically connected to the third display region 80.
Compared with the prior art, the display panel provided by the third embodiment of the invention maintains all technical effects of the first embodiment, the third display area 80 is arranged in the display panel, the cathode layer 40 is arranged to further include the third cathode 43, and the third cathode 43 is electrically connected with the third display area 80 correspondingly, so that the cathode of the third display area 80 can be independently supplied with power, the influence of cathode voltage drop on the service life of the display panel is further reduced, and the service life of the display panel is further prolonged.
Further, in the present embodiment, as shown in fig. 3, the cathode power supply structure 70 further includes a third power supply 73, and the third cathode 43 and the third power supply 73 are electrically connected via a third power supply line 90.
Further, in the present embodiment, the third display area 80 is located between the first display area 10 and the second display area 20,
a fourth embodiment of the present invention relates to a terminal, as shown in fig. 4, including: as provided in the foregoing embodiments, the display panel includes a first display area 10 and a second display area 20, wherein a camera 100 is disposed under the first display area 10.
It should be understood that the camera 100 disposed under the first display area 10 is only a specific example in this embodiment, and is not limited thereto, and in other embodiments of the present invention, other types of optical structures such as a fingerprint recognition device may be provided, and the arrangement may be flexible according to actual needs, and is not limited herein.
Compared with the prior art, the terminal provided by the fourth embodiment of the present invention is provided with the display panel provided by the foregoing embodiment, and therefore, the terminal provided by the fourth embodiment of the present invention has the same technical effects as the foregoing embodiment, and details are not repeated herein.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (10)
1. A display panel, comprising at least:
the display panel comprises a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area;
the anode layer comprises a plurality of first anodes arranged in the first display area and a plurality of second anodes arranged in the second display area, and the area of the orthographic projection of the first anodes in the stacking direction of the display panel is smaller than that of the second anodes in the stacking direction of the display panel;
a cathode layer including a first cathode and a second cathode insulated from each other; the first cathode is arranged in the first display area and electrically connected with the first display area, and the second cathode is arranged in the second display area and electrically connected with the second display area.
2. The display panel according to claim 1, further comprising:
a first power line electrically connected to the first cathode;
a second power line electrically connected to the second cathode;
the resistivity of the first power line is smaller than the resistivity of the second power line.
3. The display panel according to claim 2, wherein a width of the first power supply line is larger than a width of the second power supply line.
4. The display panel according to claim 3, wherein the width of the first power supply line is greater than 20 μm.
5. The display panel according to claim 2, wherein the display panel further comprises a pixel circuit, and the first power line is manufactured in the same process step as a source metal layer of the pixel circuit.
6. The display panel according to claim 2, further comprising:
a cathode power supply structure including a first power source electrically connected to the first power line, and a second power source electrically connected to the second power line.
7. The display panel according to claim 6, wherein the first power supply voltage is greater than or equal to 2 volts and less than or equal to 4 volts.
8. The display panel according to claim 6, wherein the first power supply is a direct current power supply.
9. The display panel according to claim 1, further comprising:
a third display area adjacent to the first display area and/or the second display area;
the cathode layer includes a third cathode electrically connected to the third display region.
10. A display terminal, comprising: the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200185.6A CN111834540A (en) | 2020-03-20 | 2020-03-20 | Display panel and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200185.6A CN111834540A (en) | 2020-03-20 | 2020-03-20 | Display panel and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111834540A true CN111834540A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010200185.6A Pending CN111834540A (en) | 2020-03-20 | 2020-03-20 | Display panel and terminal |
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| CN (1) | CN111834540A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801950A (en) * | 2019-01-31 | 2019-05-24 | 厦门天马微电子有限公司 | The production method of display panel, display device and display panel |
| CN110112184A (en) * | 2019-04-17 | 2019-08-09 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic equipment |
| CN110767717A (en) * | 2019-04-30 | 2020-02-07 | 昆山国显光电有限公司 | Array substrate, display panel and display device |
| CN210120137U (en) * | 2019-07-31 | 2020-02-28 | 昆山国显光电有限公司 | Display panel and display device |
-
2020
- 2020-03-20 CN CN202010200185.6A patent/CN111834540A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801950A (en) * | 2019-01-31 | 2019-05-24 | 厦门天马微电子有限公司 | The production method of display panel, display device and display panel |
| CN110112184A (en) * | 2019-04-17 | 2019-08-09 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic equipment |
| CN110767717A (en) * | 2019-04-30 | 2020-02-07 | 昆山国显光电有限公司 | Array substrate, display panel and display device |
| CN210120137U (en) * | 2019-07-31 | 2020-02-28 | 昆山国显光电有限公司 | Display panel and display device |
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Application publication date: 20201027 |