CN113257173A - Active light-emitting device, display panel and splicing display device - Google Patents
Active light-emitting device, display panel and splicing display device Download PDFInfo
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- CN113257173A CN113257173A CN202110332579.1A CN202110332579A CN113257173A CN 113257173 A CN113257173 A CN 113257173A CN 202110332579 A CN202110332579 A CN 202110332579A CN 113257173 A CN113257173 A CN 113257173A
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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]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application discloses initiative luminescent device, display panel and tiled display device. The device comprises an active switch unit, a maintaining unit, a light-emitting unit, a control pin, an anode pin and a cathode pin; the active switch unit comprises a control end, an input end and an output end, and the output end of the active switch unit is connected with the light-emitting unit in a control mode; the maintaining unit is coupled with the control end of the active switch unit and the input end or the output end of the light-emitting unit; the active switch unit, the maintaining unit and the light emitting unit are integrally packaged, and the control end of the active switch unit, the input end of the active switch unit and the output end of the light emitting unit are the control pin, the anode pin and the cathode pin of the packaged active light emitting device. The active light-emitting device can be used as an independent component, and the manufacturing process of the active switch unit is not required to be carried out on the substrate, so that the manufacturing process of the display panel is greatly reduced, and the manufacturing difficulty is reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to an active light-emitting device, a display panel and a splicing display device.
Background
An LED (Light-Emitting Diode) has the advantages of high brightness, good Light-Emitting efficiency, and lower power consumption. With the development of LED technology, LEDs have not been limited to use as backlights. With the development of the technology, Micro LEDs (Micro LEDs) gradually expose corners in the field of display technology, and become a new generation of display technology. The manufacturing method of the Micro LED mainly comprises the steps of providing an array substrate, manufacturing a Micro LED structure on the array substrate, and forming a plurality of sub-pixels which are arranged in an array. And each Micro LED is controlled to emit light by a driving device on the array substrate, so that a display picture is realized.
The driving method of the Micro LED display panel can be divided into two driving methods, namely, Passive Matrix (Passive Matrix) and Active Matrix (Active Matrix). The passive matrix driving method is prone to the problem of signal crosstalk. However, the active matrix driving method requires a high temperature process to manufacture the active switch, which is complicated in manufacturing process.
Disclosure of Invention
The present application provides an active light emitting device, a display panel and a tiled display apparatus, so as to reduce the manufacturing process of the display panel and reduce the manufacturing difficulty.
The application discloses initiative light emitting device includes: the device comprises an active switch unit, a maintaining unit, a light-emitting unit, a control pin, an anode pin and a cathode pin; the active switch unit comprises a control end, an input end and an output end, and the output end of the active switch unit is connected with the light-emitting unit in a control mode; the maintaining unit is coupled with the control end of the active switch unit and the input end or the output end of the light-emitting unit; the active switch unit, the maintaining unit and the light emitting unit are integrally packaged, and the control end of the active switch unit, the input end of the active switch unit and the output end of the light emitting unit are the control pin, the anode pin and the cathode pin of the packaged active light emitting device.
Optionally, the active switch unit is an active switch, the maintaining unit is a storage capacitor, and the storage capacitor is coupled to the control end of the active switch and the input end or the output end of the light emitting unit.
The application also discloses a display panel, comprising; a substrate, a plurality of active light emitting devices, and a driving device; the substrate is provided with a plurality of signal lines which are insulated from each other; the plurality of active light-emitting devices are directly arranged on the substrate and are respectively connected with the plurality of signal lines; the driving device is connected with the plurality of signal lines of the substrate and drives the plurality of active light-emitting devices; wherein the active light emitting device comprises: the device comprises an active switch unit, a maintaining unit, a light-emitting unit, a control pin, an anode pin and a cathode pin; the active switch unit comprises a control end, an input end and an output end, and the output end of the active switch unit is connected with the light-emitting unit in a control mode; the maintaining unit is coupled between the control end of the active switching unit and the input end or the output end of the light-emitting unit; the active switch unit, the maintaining unit and the light emitting unit are integrally packaged, and the control end of the active switch unit, the input end of the active switch unit and the output end of the light emitting unit are the control pin, the anode pin and the cathode pin of the packaged active light emitting device.
Optionally, the substrate is a circuit board, and the plurality of active light emitting devices are directly disposed on the circuit board; the control pin, the anode pin and the cathode pin of the active light-emitting device are respectively electrically connected with the circuit board.
Optionally, the circuit board includes a first mounting surface and a second mounting surface, the first mounting surface and the second mounting surface are oppositely arranged, and the first mounting surface and the second mounting surface are oppositely oriented, and the plurality of active light emitting devices are arranged on the first mounting surface; the circuit board is provided with at least one through hole, the through hole is communicated with the first mounting surface and the second mounting surface, a conductive material is arranged in the through hole, the second mounting surface is provided with a drive circuit binding area, and a plurality of signal lines arranged on the first mounting surface are electrically connected with the drive circuit binding area arranged on the second mounting surface through the conductive material in the through hole; the driving device is bound with the driving circuit binding region.
Optionally, the driving device is a chip on film, and the chip on film is attached to the second mounting surface of the circuit board; the chip on film comprises a flexible circuit board and a driving chip, wherein the flexible circuit board is electrically connected with the driving chip, the via hole is formed in one side, close to the edge of the circuit board, of the driving circuit binding area, and the driving chip is arranged on the other side of the driving circuit binding area.
Optionally, the signal line includes a plurality of data lines and scan lines insulated from each other, the active light emitting structure includes an active switch unit, a sustain unit, and a light emitting unit, the active switch unit includes a control end, an input end, and an output end, the control end is connected to the scan line, the input end is connected to the data line, and the output end is connected to the light emitting unit; the maintaining unit is coupled to the control end of the active switching unit and the input end of the light emitting unit; the output end of the light emitting unit is connected to a common line or a ground line.
Optionally, the printed circuit board is of a single-layer board structure, the via hole is a through hole, and the via hole penetrates through the printed circuit board and is communicated with the first mounting surface and the second mounting surface.
Optionally, the printed circuit board is of a multi-layer board structure, the via holes arranged between different layers are blind holes, and the via holes arranged between different layers are electrically connected through connecting wires.
The application also discloses a splicing display device which comprises the display panel. The active switch unit, the maintaining unit and the light-emitting unit are integrally packaged to form an independent and complete active light-emitting device, and are connected with the peripheral driving circuit through the control pin, the anode pin and the cathode pin, so that in the process of a Mini-LED or Micro-LED display panel in an active matrix driving mode, only the structure in the active light-emitting device needs to be integrally packaged into an independent component, the component is directly arranged on the substrate, and the process of the active switch unit does not need to be carried out on the substrate, so that the requirements on the material of the substrate are greatly reduced, the process technology of the display panel is reduced, and the process difficulty is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic diagram of an active light emitting device of an embodiment of the present application;
fig. 2 is a schematic diagram of an internal circuit of an active light emitting device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a display panel according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a cross-section of a display panel of an embodiment of the present application;
FIG. 5 is a schematic view of a tiled display arrangement according to an embodiment of the present application;
fig. 6 is a schematic diagram of a joint of a tiled display device according to an embodiment of the present application.
The method comprises the following steps of 1, splicing a display device; 10. display panel/first display panel/second display panel; 11. a substrate/circuit board; 12. an active light emitting device; 121. a control pin; 122. an anode pin; 123. a cathode pin; 124. active switching unit/active switch; 125. a sustain cell/storage capacitor; 126. a light emitting unit/light emitting diode; 110. a first mounting surface; 111. a second mounting surface; 112. scanning a line; 113. a data line; 114. a via hole; 115. a drive circuit binding region; 116. a signal line; 13. a driver/chip on film; 14. a row driver; 15. a column driver; 16. and connecting the devices.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The present application is described in detail below with reference to the figures and alternative embodiments.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of the structure of the active light emitting device 12 of the present application, and fig. 2 is a schematic diagram of the internal circuit of the active light emitting device 12 of the present application.
The application discloses an active light emitting device 12, comprising: an active switching unit 124, a sustain unit 125, a light emitting unit 126, a control pin 121, an anode pin 122, and a cathode pin 123; the active switch unit 124 includes a control terminal G, an input terminal S and an output terminal D, and the output terminal D of the active switch unit 124 is connected to the light emitting unit 126 in a control manner; the maintaining unit 125 is coupled to the control terminal G of the active switching unit 124 and the input terminal S of the light emitting unit 126; the active switch unit 124, the sustain unit 125 and the light emitting unit 126 are integrally packaged as a whole into an active light emitting device 12. The control terminal G of the active switch unit 124, the input terminal S of the active switch unit 124, and the output terminal of the light emitting unit 126 are the control pin 121, the anode pin 122, and the cathode pin 123 of the active light emitting device 12 after packaging. Of course, the maintaining unit 125 is coupled between the control terminal G of the active switching unit 124 and the input terminal of the light emitting unit 126.
Specifically, the active switch unit 124 is an active switch, the maintaining unit 125 is a storage capacitor, and the storage capacitor 125 is coupled between the control terminal G of the active switch and the input terminal or the output terminal of the light emitting unit 126, but may be implemented by other circuits. If the light emitting unit 126 employs a light emitting diode, the active light emitting device may be referred to as an active-LED (ALED). It should be noted that the active light emitting device 12 of the present application is not a conventional light emitting diode including only P, N two light emitting layers, the active light emitting device is a light emitting diode using a multi-quantum hydrazine material as a light emitting layer and including an active switch and a storage capacitor inside, and in addition, the active light emitting device 12 has more than one electrode pin for implementing functions of active matrix driving or current driving by matching with an external driving circuit compared with the conventional light emitting diode 126. The control pin 121, the anode pin 122 and the cathode pin 123 of the active light emitting device 12 can all be located on the same side and are preferably packaged upside down. Of course, those skilled in the art can select the types of the active switch unit 124, the sustain unit 125 and the light emitting unit 126 according to their own requirements, for example, the active switch unit 124 employs a field effect transistor, a triode, etc., and the light emitting unit 126 can be a light emitting diode 126 emitting red, green, blue, white and yellow light.
The active light emitting device 12 can be well applied to the display panel 10 such as a Mini-LED or a Micro-LED. Referring to fig. 1 and fig. 2, in combination with fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of the display panel 10 of the present application, and fig. 4 is a schematic cross-sectional diagram of the display panel 10 of the present application. The present application also discloses a display panel 10 comprising; a substrate 11, a plurality of active light emitting devices 12, and a driving device 13; the substrate 11 is provided with a plurality of signal lines insulated from each other; the signal lines comprise a plurality of data lines 113 and scanning lines 112 which are insulated from each other, and a plurality of active light emitting devices 12 are directly arranged on the substrate 11 and are respectively connected with the plurality of signal lines; the driving device 13 is connected to the plurality of signal lines of the substrate 11 and drives the plurality of active light emitting devices 12; wherein the active light emitting device 12 comprises: an active switching unit 124, a sustain unit 125, a light emitting unit 126, a control pin 121, an anode pin 122, and a cathode pin 123; the active switch unit 124 includes a control terminal G, an input terminal S and an output terminal D, and the output terminal D of the active switch unit 124 is connected to the light emitting unit 126 in a control manner; the maintaining unit 125 is coupled between the control terminal G of the active switching unit 124 and the input terminal S of the light emitting unit 126 or the output terminal D of the light emitting unit 126; the active switch unit 124, the sustain unit 125 and the light emitting unit 126 are integrally packaged, and the control terminal G of the active switch unit 124, the input terminal S of the active switch unit 124 and the output terminal of the light emitting unit 126 are the control pin 121, the anode pin 122 and the cathode pin 123 of the active light emitting device 12 after being packaged. The control end G of the active switch unit 124 is connected to the scan line 112, the input end S of the active switch unit 124 is connected to the data line 113, and the output end D of the active switch unit 124 is connected to the light emitting unit 126; the maintaining unit 125 is coupled to the control terminal G of the active switching unit 124 and the input terminal of the light emitting unit 126; the output terminal of the light emitting unit 126 is connected to a common line or a ground line.
The active switch 124, the maintaining unit 125 and the light emitting unit 126 are packaged together to form a single and complete active light emitting device 12, so that in the process of manufacturing the Mini-LED or Micro-LED display panel 10 adopting the active matrix driving mode, only the active light emitting device 12 needs to be directly arranged on the substrate 11, and then the control pin 121, the anode pin 122 and the cathode pin 123 are respectively connected with the scanning line 112, the data line 113 and the public line or the ground line, so that the process and process difficulty of the Mini-LED or Micro-LED display panel 10 is greatly reduced, and the production efficiency of the display panel 10 is also improved.
For the Mini-LED or Micro-LED display panel 10 with an active switch formed by an array process, for example, a thin film transistor is formed by a film forming process, because a higher temperature is required in the active switch manufacturing process, the substrate 11 that can be selected by the Mini-LED or Micro-LED display panel 10 is greatly limited, so that the range of the substrate 11 to be selected is smaller, and a high temperature resistant glass substrate is generally selected in the industry, and other types of substrates cannot be selected. The active light emitting device 12 of the present application integrally encapsulates the active switching element and the maintaining unit, so that the active light emitting device can be directly disposed on the substrate 11 without an additional switching element and an additional maintaining unit, and can be directly connected to the corresponding signal line. Therefore, the substrate 11 is not limited to a high temperature resistant glass substrate, the variety of the selected substrate 11 is wide, the substrate can be made of materials suitable for forming a micro VIA (VIA Hole), and can be a single-layer board or multi-layer board structure such as a rigid board, a Flexible Printed Circuit (FPC), a micro-porous board, a metal substrate and the like, and even the circuit board 11 can be used as a substrate, and the plurality of active light emitting devices 12 are directly arranged on the circuit board 11; the control pin 121, the anode pin 122 and the cathode pin 123 of the active light emitting device 12 are electrically connected to the circuit board 11, respectively.
The display panel 10 is provided with driving devices 13 at two edges, the driving devices 13 include a row driver 14 and a column driver 15, the row driver 14 is connected to the scan lines 112, and the column driver 15 is connected to the data lines 113 to drive the light emitting units 126 to display. The circuit board 11 comprises a first mounting surface 110 and a second mounting surface 111; the first mounting surface 110 is opposite to the second mounting surface 111, and the plurality of active light emitting devices 12 are arranged on the first mounting surface 110; the circuit board 11 is provided with at least one via hole 114 (micro through hole), the via hole 114 communicates the first mounting surface 110 and the second mounting surface 111, a conductive material is arranged in the via hole 114, the second mounting surface 111 is provided with at least one driving circuit binding region 115, and a plurality of signal lines arranged on the first mounting surface 110 are electrically connected with the driving circuit binding region 115 arranged on the second mounting surface 111 through the conductive material in the via hole; the driving devices 13, including the row driver 14 and/or the column driver 15, are respectively bound to the driving circuit binding regions 115 one by one. The top signal is transmitted to the middle layer or the bottom layer through the micro-via structure, so that the signal line or the scan line can be transmitted to the bottom layer through the via structure at the end to bind the driver IC.
The driving device 13 itself needs to occupy a certain space, and even if a flexible cof (chip on film) package type is used, a binding region and an edge grinding distance reserved on the substrate 11 still need to be provided, which is not favorable for realizing the miniaturization of the frame of the display panel 10. The scheme of the circuit board 11 selected for the substrate 11 is used for explanation, because the circuit board 11 is a rigid substrate 11, the active light emitting device 12 arranged on the first mounting surface 110 of the circuit board 11 and the driving device 13 bound on the second mounting surface 111 of the circuit board 11 are electrically connected by arranging the via hole 114 on the circuit board 11 and arranging the conductive material in the via hole 114, and by arranging the via hole 114 on the substrate 11, a winding area or a wiring area of the driving circuit does not need to be reserved on the first surface, so that the display panel 10 can have a frameless display effect.
Of course, the driving device 13 of the present application may also have various options, for example, the driving device 13 is a chip on film, and the chip on film is attached to the second mounting surface 111 of the circuit board 11; the flip chip film comprises a flexible circuit board 11 and a driving chip, wherein the flexible circuit board 11 is electrically connected with the driving chip, the via hole 114 is arranged on one side of the driving circuit binding area 115 close to the edge of the circuit board 11, and the driving chip is arranged on the other side of the driving circuit binding area 115. In addition, the driving device 13 may also be a driving chip with metal pins, and the driving chip is directly disposed on the second mounting surface 111 of the circuit board 11 and directly bonded and fixed with the driving circuit bonding region 115, instead of being connected with the driving circuit bonding region 115 through the flexible circuit board 11, and the driving pins of the driving chip may also be bonded with the driving circuit bonding region 115.
Specifically, the circuit board 11 has a single-layer board structure or a multi-layer board structure, the via hole 114 is a through hole, and the via hole 114 penetrates through the circuit board 11 and communicates the first mounting surface 110 and the second mounting surface 111. The via hole 114 may be formed by a laser drilling process or a physical drilling process, and then the via hole 114 may be filled with a conductive material. Of course, the following may also be employed: a layer of conductive material is electroplated in the via hole 114, and then the via hole 114 is filled with a non-conductive material, such as resin, so as to ensure that the via hole 114 can electrically communicate with the first mounting surface 110 and the second mounting surface 111 of the circuit board 11, and also maintain the overall thickness of the circuit board 11. The conductive material may be copper or a copper alloy, silver or a silver alloy, or the like.
Of course, the via holes 114 of the circuit board 11 disposed between different layers may also be blind holes, and the via holes 114 disposed between different layers are electrically connected through connecting wires. The circuit board 11 with a multilayer structure has high assembly density, small volume and light weight, and meets the requirements of light weight and miniaturization of the display panel 10; because the assembly density of the display panel 10 is high, the number of connecting lines among the components is reduced, the installation is simple, and the reliability is high; in addition, a circuit with certain impedance can be formed at different levels, so that the impedance of each data line 113 and each scanning line 112 is balanced, and the phenomenon of signal failure caused by the impedance of the driving signal is reduced, which is beneficial to improving the effect of the display panel 10.
Specifically, the circuit board 11 is made of a resin-based copper-clad plate, an aluminum substrate 11, a ceramic substrate 11, a paper substrate, a glass fiber cloth substrate, or a mixture of one or more of them. Other rigid and hard materials may be selected by those skilled in the art according to their own needs. Of course, the substrate 11 of the present application is not limited to the circuit board 11, and may be a single-layer board or a multi-layer board such as a rigid board, a micro-porous board, a metal substrate 11, etc.
The display panel 10 can be used alone, and can achieve a narrow frame effect or a frameless effect. Of course, the tiled display device 1 can also be manufactured by tiling. Referring to fig. 5 and 6, fig. 5 is a schematic diagram of the splicing device of the present application, and fig. 6 is a schematic diagram of a splicing part of the tiled display device 1 of the present application. The application also discloses a tiled display device 1 comprising at least two of the display panels 10. Explaining by two display panels 10, the display panel 10 is divided into a first display panel 10 and a second display panel 10, the first display panel 10 and the second display panel 10 are spliced and displayed by a connecting device 16, and a distance between two adjacent active light emitting devices 12 of the first display panel 10 and the second display panel 10 is a; first display panel 10 with second display panel 10 is in correspondence the side of base plate 11 docks mutually, the initiative luminescent device 12 that is close to the butt joint side in the first display panel 10 is first initiative luminescent device 12, the initiative luminescent device 12 that the second display panel 10 is close to the butt joint side is second initiative luminescent device 12, the interval between first initiative luminescent device 12 and the second initiative luminescent device 12 is b, preferably, and a equals b, is favorable to the seamless concatenation between the concatenation display device 1 to show like, makes concatenation display device 1 show more evenly, has improved display device's display effect.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. An active light emitting device, comprising: the device comprises an active switch unit, a maintaining unit, a light-emitting unit, a control pin, an anode pin and a cathode pin;
the active switch unit comprises a control end, an input end and an output end, and the output end of the active switch unit is connected with the light-emitting unit in a control mode; the maintaining unit is coupled to the control end of the active switching unit and the input end or the output end of the light emitting unit;
the active switch unit, the maintaining unit and the light emitting unit are integrally packaged, and the control end of the active switch unit, the input end of the active switch unit and the output end of the light emitting unit are the control pin, the anode pin and the cathode pin of the packaged active light emitting device.
2. The active light emitting device of claim 1, wherein the active switching unit is an active switch, the sustain unit is a storage capacitor, and the storage capacitor is coupled between a control terminal of the active switch and an input terminal or an output terminal of the light emitting unit.
3. A display panel, comprising:
a substrate provided with a plurality of signal lines insulated from each other;
a plurality of active light emitting devices directly disposed on the substrate and respectively connected to the plurality of signal lines; and
a driving device connected to the plurality of signal lines of the substrate to drive the plurality of active light emitting devices;
wherein the active light emitting device comprises: the device comprises an active switch unit, a maintaining unit, a light-emitting unit, a control pin, an anode pin and a cathode pin;
the active switch unit comprises a control end, an input end and an output end, and the output end of the active switch unit is connected with the light-emitting unit in a control mode; the maintaining unit is coupled between the control end of the active switching unit and the input end or the output end of the light-emitting unit;
the active switch unit, the maintaining unit and the light emitting unit are integrally packaged, and the control end of the active switch unit, the input end of the active switch unit and the output end of the light emitting unit are the control pin, the anode pin and the cathode pin of the packaged active light emitting device.
4. The display panel of claim 3, wherein the substrate is a circuit board, and the plurality of active light emitting devices are directly disposed on the circuit board; the control pin, the anode pin and the cathode pin of the active light-emitting device are respectively electrically connected with the circuit board.
5. The display panel according to claim 4, wherein the circuit board includes a first mounting surface and a second mounting surface, the first mounting surface and the second mounting surface are oppositely arranged, and the first mounting surface and the second mounting surface are oppositely oriented, and the plurality of active light emitting devices are arranged on the first mounting surface;
the circuit board is provided with at least one through hole, the through hole is communicated with the first mounting surface and the second mounting surface, a conductive material is arranged in the through hole, the second mounting surface is provided with a drive circuit binding area, and a plurality of signal lines arranged on the first mounting surface are electrically connected with the drive circuit binding area arranged on the second mounting surface through the conductive material in the through hole; the driving device is bound with the driving circuit binding region.
6. The display panel according to claim 5, wherein the driving device is a chip on film, the chip on film being attached to the second mounting surface of the circuit board;
the chip on film comprises a flexible circuit board and a driving chip, wherein the flexible circuit board is electrically connected with the driving chip, the via hole is formed in one side, close to the edge of the circuit board, of the driving circuit binding area, and the driving chip is arranged on the other side of the driving circuit binding area.
7. The display panel according to claim 5, wherein the signal line comprises a plurality of data lines and scan lines insulated from each other, the active light emitting structure comprises an active switching unit, a sustain unit and a light emitting unit, the active switching unit comprises a control terminal, an input terminal and an output terminal, the control terminal is connected to the scan line, the input terminal is connected to the data line, and the output terminal is connected to the light emitting unit; the maintaining unit is coupled to the control end of the active switching unit and the input end of the light emitting unit; the output end of the light emitting unit is connected to a common line or a ground line.
8. The display panel according to claim 5, wherein the printed circuit board has a single-layer structure, the via hole is a through hole, and the via hole penetrates through the printed circuit board and connects the first mounting surface and the second mounting surface.
9. The display panel according to claim 5, wherein the printed circuit board is a multi-layer board structure, the via holes disposed between different layers are blind holes, and the via holes disposed between different layers are electrically connected by a connection wire.
10. A tiled display arrangement comprising at least two tiled display panels according to any of the claims 3 to 9.
Priority Applications (1)
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| CN202110332579.1A CN113257173A (en) | 2021-03-29 | 2021-03-29 | Active light-emitting device, display panel and splicing display device |
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| CN202110332579.1A CN113257173A (en) | 2021-03-29 | 2021-03-29 | Active light-emitting device, display panel and splicing display device |
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