CN113066844A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113066844A CN113066844A CN202110313872.3A CN202110313872A CN113066844A CN 113066844 A CN113066844 A CN 113066844A CN 202110313872 A CN202110313872 A CN 202110313872A CN 113066844 A CN113066844 A CN 113066844A
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- pin
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- display panel
- mux unit
- line
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- 239000003990 capacitor Substances 0.000 claims abstract description 61
- 239000002184 metal Substances 0.000 claims description 40
- 239000000758 substrate Substances 0.000 claims description 5
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920001621 AMOLED Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
Abstract
The application discloses a display panel and a display device, comprising a MUX unit, wherein the MUX unit comprises a first grid line and a second grid line which are symmetrically arranged, and a grid electrode of the MUX unit is respectively connected to a first pin and a second pin through the first grid line and the second grid line; the first capacitor and the second capacitor are used for adjusting the current of the grid signal of the MUX unit, and the third pin and the fourth pin are direct-current signal pins or GND. According to the technical scheme provided by the embodiment of the application, the capacitor connected with the grid electrode of the MUX unit is arranged on the display panel, and the current of the grid electrode signal of the MUX unit is adjusted through the capacitor, so that the intensity of electromagnetic radiation is adjusted, and the electromagnetic interference generated by the MUX unit on the whole antenna is improved.
Description
Technical Field
The present invention relates generally to the field of display technologies, and in particular, to a display panel and a display device.
Background
The AMOLED (Active-matrix organic light-emitting diode) display technology is rapidly developed, has a broad prospect, and is particularly widely applied to portable mobile products such as mobile phones. For the current AMOLED product, the panel bending technology and the MUX (data acquisition unit) technology are widely applied because they can realize a narrower frame, the existing design method is to design the MUX unit under the bending area, and bend the MUX unit to the back of the panel display area along with the whole panel area circuit after the bending process, in this design, because the MUX unit is turned on and off (i.e. the MUX unit is alternately changed between high level and low level), so as to form electromagnetic radiation, which causes electromagnetic interference (i.e. EMI) to the whole antenna of the mobile product.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a display panel and a display device.
In a first aspect, a display panel is provided, which includes a MUX unit, where the MUX unit includes a first gate line and a second gate line that are symmetrically arranged, and a gate of the MUX unit is connected to a first pin and a second pin through the first gate line and the second gate line, respectively;
the first capacitor and the second capacitor are used for adjusting the current of the grid signal of the MUX unit, and the third pin and the fourth pin are constant potential pins.
In a second aspect, a display device is provided, which includes the above display panel.
According to the technical scheme provided by the embodiment of the application, the capacitor connected with the grid electrode of the MUX unit is arranged on the display panel, and the current of the grid electrode signal of the MUX unit is adjusted through the capacitor, so that the intensity of electromagnetic radiation is adjusted, and the electromagnetic interference generated by the MUX unit on the whole antenna is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a display panel according to an embodiment;
FIG. 2 is a schematic view of a display panel according to another embodiment;
FIG. 3 is a schematic diagram illustrating an embodiment of a display panel after bending;
FIG. 4 is a schematic cross-sectional view of a display panel according to an embodiment.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, a display panel is provided, which includes a MUX unit 1, where the MUX unit 1 includes a first gate line 21 and a second gate line 22 that are symmetrically disposed, and a gate of the MUX unit 1 is connected to a first pin 31 and a second pin 32 through the first gate line 21 and the second gate line 22, respectively;
the first capacitor 41 and the second capacitor 42, one end of the first capacitor 41 is connected to the first gate line 21, the other end of the first capacitor is connected to the third pin 51, one end of the second capacitor 42 is connected to the second gate line 22, the other end of the second capacitor is connected to the fourth pin 52, the first capacitor 41 and the second capacitor 42 are used for adjusting the current of the gate signal of the MUX unit 1, and the third pin 51 and the fourth pin 52 are constant potential pins.
In this embodiment, the MUX (Multiplexer, MUX for short) circuit control IC includes a plurality of TFT driving switches for driving sub-pixels, each TFT driving switch drives one sub-pixel, and gates of the TFT driving switches are connected to each other and led out through a gate line, for the MUX circuit, a gate signal of the MUX circuit may be considered to have a certain load due to an inter-electrode capacitance of the TFT itself and a parasitic capacitance and a resistance of a routing, and a change relationship of a current with time may be simplified as the following formula:
where τ is RC, K is a constant, and when C increases, the current decreases because other parameters are not changed, and the induced magnetic field strength caused by the current for the simplified MUX gate signal line can be expressed as:
wherein mu 0 is vacuum magnetic conductivity, d is the distance between the two, the form of electric field intensity is the same as the magnetic field intensity, and the reduction of current can directly reduce the magnetic field generated by electromagnetic induction, therefore, the implementation arranges a capacitor connected with the grid of the MUX unit 1 on the display panel, the current of the grid signal of the MUX unit 1 is adjusted through the capacitor, and then the intensity of electromagnetic radiation is adjusted, and the improvement of the electromagnetic radiation generated by the MUX unit 1 to the whole antenna is realizedElectromagnetic interference.
Further, the center of symmetry of the first gate line 21 and the second gate line 22 is a central line of the display panel, and the first capacitor 41 and the second capacitor 42 are symmetrically disposed with the central line as a symmetry axis.
In the manufacturing process of the display panel, in order to ensure the performance of the panel, the MUX unit 1 and the corresponding first gate line 21 and second gate line 22 are symmetrically disposed, and the symmetry axis is the central line of the display panel and is the central line extending longitudinally, so that two capacitors are disposed, the first capacitor 41 and the second capacitor 42 are also symmetrically disposed and are respectively connected to the first gate line 21 and the second gate line 22 to adjust the gate signal, and the first capacitor 41 and the second capacitor 42 are also disposed with the central line as the symmetry axis, so that the intensity of electromagnetic radiation can be reduced after the capacitors are added, and the performance of the display panel itself cannot be affected.
Further, the constant potential is a direct current signal or GND.
In order to adjust the gate signal current of the MUX unit by the capacitor, a constant voltage needs to be applied to one end of the capacitor, and the method can be implemented by applying a dc signal to one end of the capacitor or directly applying one end of the capacitor to GND.
The display panel of the embodiment includes a display area a, a bending area B and a circuit area C, the circuit area C and the display area a are located at two sides of the bending area B, and the circuit area C is provided with a circuit structure including a MUX unit 1, a driving circuit and the like. As shown in fig. 3, after the panel structure is bent, the circuit area C is located on the back side of the display area a, the MUX unit is close to the whole antenna 10, and the whole antenna 10 shown in the figure is located at an approximate position, and by adding the capacitor structure, the electromagnetic influence of the MUX unit 1 on the whole antenna 10 in fig. 3 can be reduced.
Further, the first pin 31, the second pin 32, the third pin 51 and the fourth pin 52 are located on the chip on film 6.
In the present embodiment, a schematic structure diagram of a product is provided, as shown in fig. 1, the product is a cof (chip on fpc) product, wherein a gate signal of the MUX unit 1 is connected to a first pin 31 and a second pin 32, the first pin 31 and the second pin 32 are located on a chip on film, an additional capacitor is connected to a third pin 51 and a fourth pin 52 on the chip on film through a trace, one end of the capacitor is connected to a gate of the MUX unit 1, and the other end is connected to GND or other direct current signals, so as to adjust a gate signal current of the MUX, and reduce an interference effect of the MUX unit 1 on an antenna of a whole device.
Further, the liquid crystal display device further comprises an IC8, two fifth pins 9 are symmetrically arranged on the IC8, and the two fifth pins 9 are respectively connected to the first gate line 21 and the second gate line 22.
In this embodiment, another schematic structure diagram of a product is provided, as shown in fig. 2, the product is a cop (chip on pi) product, an IC circuit is disposed in a circuit region of the product, a MUX unit 1 is connected to an IC8, in this embodiment, a pin on an IC8 for connecting to a gate of the MUX unit 1 is defined as a fifth pin, a gate signal of the MUX unit 1 is connected to a panel circuit from the IC through the fifth pin, two fifth pins 9 are also symmetrically disposed, and a symmetry axis is the same as the symmetry axis and is a central line of a display panel.
Further, the first pin 31, the second pin 32, the third pin 51 and the fourth pin 52 are located on a flexible circuit board.
In this embodiment, a pin led out by a gate signal of the MUX unit 1 is located at the FOP flexible circuit board shown in fig. 2, an additionally arranged capacitor is connected to the third pin 51 and the fourth pin 52 on the FOP flexible circuit board through a wire, one end of the capacitor is connected to the gate of the MUX unit 1, and the other end of the capacitor is connected to GND or other direct current signals, so that the adjustment of the MUX gate signal current is realized, and the effect of the MUX unit 1 on the interference of the whole antenna is reduced.
Further, the first pin 31 and the second pin 32 have the same definition, and the third pin 51 and the fourth pin 52 have the same definition.
The circuit structure in this embodiment is a symmetric structure, and the symmetric axis is the central line of the display panel, so the first pin 31 and the second pin 32 are both pins connected to the gate of the MUX unit 1, and both pins are defined identically and output gate control signals; meanwhile, the third pin 51 and the fourth pin 52 are both connected to one end of a capacitor, so as to adjust the gate signal current of the MUX unit 1, and both are also defined as the same and may be connected to GND or other direct current signals.
Further, the first capacitor or the second capacitor is a first metal layer 12 and a second metal layer 13 which are stacked, a first inorganic layer 14 is arranged between the first metal layer 12 and the second metal layer 13,
the display panel comprises a substrate 11, and the first capacitor and the second capacitor are arranged above the substrate 11.
In the above embodiment, the gate signal of the MUX unit 1 is adjusted by adding the capacitor, so as to further reduce the interference of the MUX unit 1 to the whole antenna, where the specific size of the capacitor structure needs to be determined according to the specific conditions of the display panel, such as the size of the MUX unit 1, the overlapping area between the MUX unit 1 and the whole antenna, the installation position of the whole antenna, and the like. The capacitor structure additionally arranged in the embodiment is realized by two metal layers arranged in a laminated manner, the inorganic layer is arranged between the two metal layers for separation, the metal layers of the capacitor structure can be arranged according to the actual panel condition, for example, the capacitor structure is directly arranged on the substrate or at other positions, the increased capacitor structure can be considered to be arranged at any free position, the structural great change of the original display panel is not caused as much as possible, and other preparation work and display effects of the display panel are ensured. As shown in fig. 4, the first capacitor and the second capacitor are arranged in the same manner, so that fig. 4 only shows one arrangement manner, and is not limited to which capacitor structure.
Further, a second inorganic layer 15 is disposed on the second metal layer 13, a first through hole is disposed in the second inorganic layer 15, the second metal layer 13 and the first inorganic layer 14, a first metal line 17 is disposed on the second inorganic layer 15, and the first metal line 17 is connected to the first metal layer 12 through the first through hole;
the second inorganic layer 15 is provided with a second through hole, a second metal wire 16 is arranged on the second inorganic layer 15, and the second metal wire 6 is connected to the second metal layer 13 through the first through hole.
The two ends of the first capacitor and the second capacitor are connected to the grid line or other pins of the MUX unit through metal lines, therefore, two metal lines are arranged on the second inorganic layer, the first metal line and the second metal line connect the capacitor to the grid line or other pins of the MUX unit through the first metal line and the second metal line, an inorganic material is arranged at the position of the through hole on the second metal layer, the second metal layer is isolated from the first metal line through the inorganic material, the first metal line and the second metal line are both located on the second inorganic layer, the first metal line and the second metal line are not in contact with each other, and then the first metal line and the second metal line can be covered with an organic material for packaging.
The embodiment also provides a display device which comprises the display panel.
The application of the display device is not particularly limited, and the display device can be any product or component with a display function, such as a television, a notebook computer, a tablet computer, a wearable display device, a mobile phone, a vehicle-mounted display, a navigation, an electronic book, a digital photo frame, an advertising lamp box and the like.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment. The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. The display panel is characterized by comprising a MUX unit, wherein the MUX unit comprises a first grid line and a second grid line which are symmetrically arranged, and a grid electrode of the MUX unit is respectively connected to a first pin and a second pin through the first grid line and the second grid line;
the first capacitor and the second capacitor are used for adjusting the current of the grid signal of the MUX unit, and the third pin and the fourth pin are constant potential pins.
2. The display panel according to claim 1, wherein a center of symmetry of the first gate line and the second gate line is a central line of the display panel, and the first capacitor and the second capacitor are symmetrically disposed about the central line as a symmetry axis.
3. The display panel according to claim 2, wherein the constant potential is a direct current signal or GND.
4. The display panel according to any one of claims 1 to 3, wherein the first pin, the second pin, the third pin and the fourth pin are located on a chip on film.
5. The display panel according to any one of claims 1 to 3, further comprising an IC, wherein two fifth pins are symmetrically disposed on the IC, and the two fifth pins are respectively connected to the first gate line and the second gate line.
6. The display panel according to claim 5, wherein the first pin, the second pin, the third pin, and the fourth pin are located on a flexible circuit board.
7. The display panel according to any one of claims 1 to 3, wherein the first pin and the second pin have the same definition, and the third pin and the fourth pin have the same definition.
8. The display panel according to any one of claims 1 to 3, wherein the first capacitor or the second capacitor is a first metal layer and a second metal layer stacked on each other with a first inorganic layer interposed therebetween,
the display panel comprises a substrate, and the first capacitor or the second capacitor structure is arranged above the substrate.
9. The display panel according to claim 8, wherein a second inorganic layer is disposed on the second metal layer, the second inorganic layer, the second metal layer and the first inorganic layer are provided with a first through hole, a first metal line is disposed on the second inorganic layer, and the first metal line is connected to the first metal layer through the first through hole;
the second inorganic layer is provided with a second through hole, a second metal wire is arranged on the second inorganic layer, and the second metal wire is connected to the second metal layer through the first through hole.
10. A display device comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313872.3A CN113066844A (en) | 2021-03-24 | 2021-03-24 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110313872.3A CN113066844A (en) | 2021-03-24 | 2021-03-24 | Display panel and display device |
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| Publication Number | Publication Date |
|---|---|
| CN113066844A true CN113066844A (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110313872.3A Pending CN113066844A (en) | 2021-03-24 | 2021-03-24 | Display panel and display device |
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| CN (1) | CN113066844A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1589461A (en) * | 2002-10-11 | 2005-03-02 | 三菱电机株式会社 | Display device |
| US20100020061A1 (en) * | 2006-10-25 | 2010-01-28 | Pioneer Corporation | Display device and method of driving the display device |
| CN102165577A (en) * | 2008-08-01 | 2011-08-24 | 剑桥显示技术有限公司 | Active matrix OLED display and driver therefor |
| US20130194031A1 (en) * | 2012-01-30 | 2013-08-01 | Nvidia Corporation | Data-driven charge-pump transmitter for differential signaling |
| CN109087608A (en) * | 2017-06-14 | 2018-12-25 | 乐金显示有限公司 | Gating drive circuit and the display device for utilizing the gating drive circuit |
| CN109347462A (en) * | 2018-11-30 | 2019-02-15 | 惠州华芯半导体有限公司 | RF switch chip |
-
2021
- 2021-03-24 CN CN202110313872.3A patent/CN113066844A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1589461A (en) * | 2002-10-11 | 2005-03-02 | 三菱电机株式会社 | Display device |
| US20100020061A1 (en) * | 2006-10-25 | 2010-01-28 | Pioneer Corporation | Display device and method of driving the display device |
| CN102165577A (en) * | 2008-08-01 | 2011-08-24 | 剑桥显示技术有限公司 | Active matrix OLED display and driver therefor |
| US20130194031A1 (en) * | 2012-01-30 | 2013-08-01 | Nvidia Corporation | Data-driven charge-pump transmitter for differential signaling |
| CN109087608A (en) * | 2017-06-14 | 2018-12-25 | 乐金显示有限公司 | Gating drive circuit and the display device for utilizing the gating drive circuit |
| CN109347462A (en) * | 2018-11-30 | 2019-02-15 | 惠州华芯半导体有限公司 | RF switch chip |
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