CN108335639B - LED display device - Google Patents
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- CN108335639B CN108335639B CN201810151444.3A CN201810151444A CN108335639B CN 108335639 B CN108335639 B CN 108335639B CN 201810151444 A CN201810151444 A CN 201810151444A CN 108335639 B CN108335639 B CN 108335639B
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- 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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Abstract
The application discloses LED display device includes: a plurality of pixel units arranged in an array; each pixel unit comprises three light emitting diodes with different light emitting colors; in each row of pixel units, the first electrode of each light-emitting diode is directly connected with one transverse line; in each pixel unit, the second electrode of the red light-emitting diode is electrically connected with the first connecting line through the first through hole; the second electrode of the green light-emitting diode is electrically connected with the second connecting wire through the second through hole; the second electrode of the blue light emitting diode is electrically connected with the third connecting line through the third through hole. In the application, a pixel only needs three via holes to complete layout design, the pixel distance can be reduced, the resolution ratio is improved, the picture display quality is improved, and the complexity and the difficulty of substrate manufacturing can be reduced by the design of the via holes, the transverse lines and the three connecting lines.
Description
Technical Field
The invention relates to the technical field of display, in particular to an LED display device.
Background
At present, one complete pixel in the light emitting diode LED display device generally needs to drill four through holes on a substrate to complete the layout design of the substrate, and the design difficulty and complexity are higher.
Taking fig. 1 as an example, in each pixel, anodes (or cathodes) of red LEDs, green LEDs, and blue LEDs are connected by a first metal line 01 (the uppermost metal), the first metal line 01 is electrically connected to a second metal line 02 (the lowermost metal) traversing each row of pixels by a first via, cathodes (or anodes) of the red LEDs, green LEDs, and blue LEDs are electrically connected to a third metal line 03 by a second via, electrically connected to a fourth metal line 04 by a third via, and electrically connected to a fifth metal line 05 by a fourth via, and these metal lines are used for loading driving signals, such layout design needs four vias, and since the vias need to occupy a larger area and are often wider than the metal lines, the area occupied by each pixel is also larger, and the pixel pitch (i.e., the dot pitch, the distance between two adjacent LEDs of the same color) is also difficult to be reduced, resulting in an unclear image and low resolution. And the arrangement of four via holes and five metal wires in each pixel and the connection arrangement between the metal wires and the driving chip of the display device are complicated in process, high in complexity and difficulty and high in cost.
Therefore, how to reduce the pixel pitch of the LED display device and reduce the complexity of the manufacturing process is an urgent technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an objective of the present invention is to provide an LED display device, which can reduce the pixel pitch, improve the resolution, and reduce the complexity and difficulty of substrate fabrication. The specific scheme is as follows:
an LED display device comprising: a plurality of pixel units arranged in an array; each pixel unit comprises three light emitting diodes with different light emitting colors; the three light-emitting diodes are respectively a red light-emitting diode, a green light-emitting diode and a blue light-emitting diode; further comprising:
in each row of the pixel units, transverse lines which are directly connected with the first electrodes of the light emitting diodes and are used for loading signals for driving the first electrodes;
in each row of the pixel units, a first connecting line, a second connecting line and a third connecting line are electrically connected with the second electrode of each light emitting diode and are used for loading signals for driving the second electrode;
in each pixel unit, the second electrode of the red light emitting diode is electrically connected with the first connecting line through a first through hole; the second electrode of the green light emitting diode is electrically connected with the second connecting wire through a second through hole; and the second electrode of the blue light-emitting diode is electrically connected with the third connecting wire through a third through hole.
Preferably, in the LED display device provided in the embodiment of the present invention, in each row of the pixel units, one end of the traverse line is electrically connected to a pin of the driving chip through the first through hole.
Preferably, in the above LED display device provided by the embodiment of the present invention, in two adjacent rows of the pixel units, the first through hole in one row of the pixel units is located at an end of the transverse line, and the first through hole in the other row of the pixel units is located at an opening end of the transverse line.
Preferably, in the LED display device provided in an embodiment of the present invention, in each row of the pixel units, one end of each of the first connecting line, the second connecting line, and the third connecting line is electrically connected to a pin of a driving chip through a second through hole.
Preferably, in the above LED display device provided by the embodiment of the present invention, in each column of the pixel units, two of the second through holes are located at the ends of the first connection line and the third connection line, respectively, and one of the second through holes is located at the open end of the second connection line; or the like, or, alternatively,
in each column of the pixel units, two of the second through holes are located at the beginning of the first connecting line and the third connecting line, and one of the second through holes is located at the end of the second connecting line.
Preferably, in the LED display device provided in an embodiment of the present invention, in two adjacent columns of the pixel units, a position of each through hole in one column of the pixel units is different from a position of each through hole in the other column of the pixel units.
Preferably, in the above LED display device provided in an embodiment of the present invention, the first electrode is an anode, and the second electrode is a cathode; or, the first electrode is a cathode and the second electrode is an anode;
the transverse lines, the first connecting lines, the second connecting lines and the third connecting lines are made of the same metal material.
Preferably, in the LED display device provided in an embodiment of the present invention, the first connecting line, the second connecting line, and the third connecting line are disposed in the same layer and are parallel to each other.
Preferably, in the LED display device provided in the embodiment of the present invention, in each pixel unit, the traverse line is located on the same side of the three light emitting diodes.
Preferably, in the above LED display device provided by the embodiment of the present invention, in each pixel unit, the transverse line is located between two light emitting diodes and one light emitting diode.
The invention provides an LED display device, comprising: a plurality of pixel units arranged in an array; each pixel unit comprises three light emitting diodes with different light emitting colors; the three light-emitting diodes are respectively a red light-emitting diode, a green light-emitting diode and a blue light-emitting diode; further comprising: in each row of pixel units, transverse lines which are directly connected with the first electrodes of the light-emitting diodes and are used for loading signals for driving the first electrodes; in each row of pixel units, a first connecting line, a second connecting line and a third connecting line are electrically connected with the second electrode of each light-emitting diode and used for loading a signal for driving the second electrode; in each pixel unit, the second electrode of the red light-emitting diode is electrically connected with the first connecting line through the first through hole; the second electrode of the green light-emitting diode is electrically connected with the second connecting wire through the second through hole; the second electrode of the blue light emitting diode is electrically connected with the third connecting line through the third through hole. According to the invention, only three through holes are needed for completing layout design of one pixel, so that the pixel pitch can be reduced, the resolution is improved, the picture display quality is improved, and the complexity and the difficulty of substrate manufacturing can be reduced by the design of the through holes, the transverse lines and the three connecting lines.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a conventional LED display device;
fig. 2 is a schematic structural diagram of an LED display device according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of an LED display device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a positional relationship between the driving chip and each through hole according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention provides an LED display device, as shown in fig. 2 and 3, comprising: a plurality of pixel units arranged in an array; each pixel unit comprises three light emitting diodes with different light emitting colors; the three light-emitting diodes are respectively a red light-emitting diode 1, a green light-emitting diode 2 and a blue light-emitting diode 3; further comprising:
in each row of pixel units, a transverse line 4 which is directly connected with the first electrode of each light-emitting diode and is used for loading a signal for driving the first electrode;
in each row of pixel units, a first connecting line 5, a second connecting line 6 and a third connecting line 7 are electrically connected with the second electrode of each light-emitting diode and are used for loading signals for driving the second electrode;
in each pixel unit, the second electrode of the red light emitting diode 1 is electrically connected with the first connecting line 5 through the first via hole; the second electrode of the green light emitting diode 2 is electrically connected with the second connecting wire 6 through the second through hole; the second electrode of the blue light emitting diode 3 is electrically connected to the third connection line 7 through the third via hole.
It should be noted that the plurality of pixel units arranged in an array may be M × N pixel units (M ≧ 1, N ≧ 1), and is not limited to the 4 × 4 pixel units referred to in the drawings of the present application. In each pixel unit, the arrangement order of the red light emitting diode, the green light emitting diode and the blue light emitting diode can be various, including RGB, RBG, GRB, GBR, BRG, BGR, and is not limited to the RGB arrangement mode related to the drawings of the present invention.
In the LED display device provided in the embodiment of the present invention, in each row of pixel units, the first electrode of each light emitting diode is directly connected to one traverse line; in each pixel unit, the second electrode of the red light-emitting diode is electrically connected with the first connecting line through the first through hole; the second electrode of the green light-emitting diode is electrically connected with the second connecting wire through the second through hole; the second electrode of the blue light emitting diode is electrically connected with the third connecting line through the third through hole. The layout design of the pixel is completed only by three through holes, the pixel distance can be reduced, the resolution ratio is improved, the picture display quality is improved, the layout design of the through holes, the transverse lines and the three connecting lines is simple, and the complexity and the difficulty of substrate manufacturing can be reduced.
In a specific implementation, in the LED display device provided in an embodiment of the present invention, the first electrode is an anode, and the second electrode is a cathode; or, the first electrode is a cathode and the second electrode is an anode; the transverse lines, the first connecting lines, the second connecting lines and the third connecting lines are made of the same metal material. In specific implementation, as shown in fig. 2 and 3, the first connecting line, the second connecting line and the third connecting line are disposed in the same layer and are parallel to each other.
In practical implementation, in the above-mentioned LED display device provided by the embodiment of the present invention, as shown in fig. 2, in each pixel unit, the traverse line 4 may be located between two light emitting diodes and one light emitting diode. In fig. 2 it is shown that traversing the line 4 is on one side a red led and a blue led and on the other side a green led.
In addition, in practical implementation, in the above-mentioned LED display device provided in the embodiment of the present invention, as shown in fig. 3, in each pixel unit, the traverse line 4 may be located on the same side of the three light emitting diodes.
In the embodiment of the present invention, as shown in fig. 2 to 4, in each row of pixel units, one end of the traverse line 4 may be electrically connected to a pin of a driver chip (DDI) through a first through hole (e.g., K0, K1, K2, K3).
Specifically, in the implementation, as shown in fig. 2 and 3, in two adjacent rows of pixel units, the first through hole in one row of pixel units is located at the end of the transverse line, and the first through hole in the other row of pixel units is located at the opening end of the transverse line. Fig. 2 and 3 show that K3 is located at the end of the traverse, K2 is located at the open end of the traverse, K1 is located at the end of the traverse, and K0 is located at the open end of the traverse. The cross arrangement can reduce the difficulty of wiring design and simplify the process.
Further, in the LED display device according to the embodiment of the present invention, as shown in fig. 2 to 4, in each column of pixel units, one end of each of the first connecting line 5, the second connecting line 6, and the third connecting line 7 may be electrically connected to a pin of the driving chip (DDI) through a second through hole (e.g., a0, a1, a2, A3, a4, a5, a6, a7, A8, a9, a 10).
Specifically, in the implementation, as shown in fig. 2 and 3, in each column of pixel units, two second through holes are located at the ends of the first connection line and the third connection line, respectively, and one second through hole is located at the open end of the second connection line; or, in each column of pixel units, two second through holes are positioned at the open ends of the first connecting line and the third connecting line, and one second through hole is positioned at the tail end of the second connecting line. In two adjacent columns of pixel units, the position of each through hole in one column of pixel units and the position of each through hole in the other column of pixel units can be different. Fig. 2 and 3 show that in the first column of pixels, a0 and a2 are located at the ends of the first and third connecting lines, and a1 is located at the open end of the second connecting line; in the second column of pixels, A3 and a5 are located at the open ends of the first connection line and the third connection line, and a2 is located at the end of the second connection line. The cross arrangement can further reduce the difficulty of wiring design and simplify the process.
It should be noted that the first Through Hole and the second Through Hole can be summarized as a lateral Through Hole (dead Through Hole). This side through hole can be with the lamp plate that has emitting diode and the board that drives that has driver chip, separately makes, then two last boards are connected again, make the simplification more like this.
The embodiment of the invention provides an LED display device, which comprises: a plurality of pixel units arranged in an array; each pixel unit comprises three light emitting diodes with different light emitting colors; the three light-emitting diodes are respectively a red light-emitting diode, a green light-emitting diode and a blue light-emitting diode; further comprising: in each row of pixel units, transverse lines which are directly connected with the first electrodes of the light-emitting diodes and are used for loading signals for driving the first electrodes; in each row of pixel units, a first connecting line, a second connecting line and a third connecting line are electrically connected with the second electrode of each light-emitting diode and used for loading a signal for driving the second electrode; in each pixel unit, the second electrode of the red light-emitting diode is electrically connected with the first connecting line through the first through hole; the second electrode of the green light-emitting diode is electrically connected with the second connecting wire through the second through hole; the second electrode of the blue light emitting diode is electrically connected with the third connecting line through the third through hole. According to the invention, only three through holes are needed for completing layout design of one pixel, so that the pixel pitch can be reduced, the resolution is improved, the picture display quality is improved, and the complexity and the difficulty of substrate manufacturing can be reduced by the design of the through holes, the transverse lines and the three connecting lines.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The LED display device provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained herein by applying specific examples, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. An LED display device comprising: a plurality of pixel units arranged in an array; each pixel unit comprises three light emitting diodes with different light emitting colors; the three light-emitting diodes are respectively a red light-emitting diode, a green light-emitting diode and a blue light-emitting diode; it is characterized by also comprising:
in each row of the pixel units, transverse lines which are directly connected with the first electrodes of the light emitting diodes and are used for loading signals for driving the first electrodes; one end of the transverse line is electrically connected with the pin of the driving chip through the first through hole; in two adjacent rows of the pixel units, wherein the first through-hole in one row of the pixel units is located at the end of the transverse line and the first through-hole in the other row of the pixel units is located at the beginning of the transverse line;
in each row of the pixel units, a first connecting line, a second connecting line and a third connecting line are electrically connected with the second electrode of each light emitting diode and are used for loading signals for driving the second electrode;
in each pixel unit, the second electrode of the red light emitting diode is electrically connected with the first connecting line through a first through hole; the second electrode of the green light emitting diode is electrically connected with the second connecting wire through a second through hole; and the second electrode of the blue light-emitting diode is electrically connected with the third connecting wire through a third through hole.
2. The LED display device of claim 1, wherein in each column of the pixel units, one end of the first connecting line, one end of the second connecting line, and one end of the third connecting line are electrically connected to the pins of the driving chip through the second through holes, respectively.
3. The LED display device according to claim 2, wherein in each column of the pixel units, two of the second through holes are located at ends of the first connection line and the third connection line, respectively, and one of the second through holes is located at an open end of the second connection line; or the like, or, alternatively,
in each column of the pixel units, two of the second through holes are located at the beginning of the first connecting line and the third connecting line, and one of the second through holes is located at the end of the second connecting line.
4. The LED display device of claim 3, wherein in two adjacent columns of the pixel units, the position of each through hole in one column of the pixel units is different from the position of each through hole in the other column of the pixel units.
5. The LED display device according to any one of claims 1 to 4, wherein the first electrode is an anode and the second electrode is a cathode; or, the first electrode is a cathode and the second electrode is an anode;
the transverse lines, the first connecting lines, the second connecting lines and the third connecting lines are made of the same metal material.
6. The LED display device as claimed in claim 5, wherein the first connecting line, the second connecting line and the third connecting line are disposed in the same layer and are parallel to each other.
7. The LED display device of claim 6, wherein in each pixel cell, the transverse line is on the same side of three of the light emitting diodes.
8. The LED display device of claim 7, wherein the intersection line is located between two of the light emitting diodes and one of the light emitting diodes in each of the pixel units.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810151444.3A CN108335639B (en) | 2018-02-14 | 2018-02-14 | LED display device |
| US16/231,424 US10896928B2 (en) | 2018-02-14 | 2018-12-22 | Light emitting diode display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810151444.3A CN108335639B (en) | 2018-02-14 | 2018-02-14 | LED display device |
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| CN108335639A CN108335639A (en) | 2018-07-27 |
| CN108335639B true CN108335639B (en) | 2020-12-25 |
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| CN109461386A (en) * | 2019-01-04 | 2019-03-12 | 京东方科技集团股份有限公司 | Display device |
| CN111863833B (en) * | 2019-04-30 | 2024-03-29 | 成都辰显光电有限公司 | Driving back plate structure, display panel and manufacturing method of driving back plate structure |
| CN113223444B (en) * | 2020-01-17 | 2022-03-11 | 厦门凌阳华芯科技有限公司 | Single-pixel LED driving chip and LED display screen |
| CN114783285A (en) * | 2022-04-02 | 2022-07-22 | 上海天马微电子有限公司 | Display panel and display device |
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| CN1129104C (en) * | 2000-04-25 | 2003-11-26 | 葛世潮 | Large-screen organic LEDs display |
| JP3608614B2 (en) * | 2001-03-28 | 2005-01-12 | 株式会社日立製作所 | Display device |
| JP5763774B2 (en) * | 2010-10-15 | 2015-08-12 | グローバル オーエルイーディー テクノロジー リミティド ライアビリティ カンパニー | Chiplet display device with multi-passive matrix controller |
| JP6056175B2 (en) * | 2012-04-03 | 2017-01-11 | セイコーエプソン株式会社 | Electro-optical device and electronic apparatus |
| CN103778864A (en) * | 2012-10-25 | 2014-05-07 | 严守权 | Laser scattering displayer |
| CN203731220U (en) * | 2014-03-06 | 2014-07-23 | 厦门京东方电子有限公司 | Light bar, backlight module and display device |
| KR102295874B1 (en) * | 2014-07-24 | 2021-08-31 | 엘지디스플레이 주식회사 | Display device |
| CN106298837A (en) * | 2015-05-29 | 2017-01-04 | 鸿富锦精密工业（深圳）有限公司 | OLED display panel and splicing display device |
| KR20170097453A (en) * | 2016-02-18 | 2017-08-28 | 박상민 | COB Type Flexible LED Display Device |
| CN106873266B (en) * | 2017-04-20 | 2019-07-02 | 京东方科技集团股份有限公司 | A kind of array substrate, liquid crystal display panel and display device |
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Address after: Unit 801-A, No. 37-3, Banshangshe, Building 3, Xinke Plaza, Xiamen Torch High-tech Zone, Xiamen, Fujian 361000 Patentee after: Xiamen Lingyang Huaxin Technology Co.,Ltd. Address before: 361012 203-91, South Building, torch Plaza, no.56-58, torch Park, torch high tech Zone, Huli District, Xiamen City, Fujian Province Patentee before: XIAMEN LINGYANG HUAXIN TECHNOLOGY CO.,LTD. |