CN109785760B - LED display screen module and display device - Google Patents
LED display screen module and display device Download PDFInfo
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- CN109785760B CN109785760B CN201910038416.5A CN201910038416A CN109785760B CN 109785760 B CN109785760 B CN 109785760B CN 201910038416 A CN201910038416 A CN 201910038416A CN 109785760 B CN109785760 B CN 109785760B
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- display screen
- led display
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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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- 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]
Abstract
The application provides a LED display screen module, include: the connector comprises a connector and a first glass substrate arranged above the connector; the driving chips are arranged above the first glass substrate at intervals and comprise scanning line pins, data line pins and control signal pins, and the control signal pins are electrically connected with the connector; the insulating layer is arranged above the first glass substrate and wraps the driving chip; the light-emitting diodes are arranged above the insulating layer at intervals and comprise cathodes and anodes, scanning line pins are electrically connected with the cathodes, data line pins are electrically connected with the anodes, and the driving chip is used for controlling the light-emitting diodes; and the second glass substrate is arranged on the plurality of light-emitting diodes. Has the advantages that: the small-space LED display screen module is provided, so that the light emitting diodes of the LED display screen module are arranged between the two layers of glass substrates, the transparent display effect of the LED display screen module is realized, and the area of a non-real area is reduced.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a LED display screen module and display device.
Background
Light-Emitting diodes (LEDs for short) have the characteristics of long service life, low cost, high brightness, large viewing angle, long visible distance and the like, can meet the requirements of various application scenes, and are recognized as display devices with the highest growth potential and the fastest development, in particular to small-space LED display screens with the dot spacing of less than 3 mm. For the LED display screen, the smaller the pixel pitch is, the higher the pixel density in a unit area is, the more colorful the color is, the higher the resolution is, the advantages of no splicing, ultra-strong silence, etc., and the market demand is increasing.
Because the driving mode of the existing LED display screen on the market is passive, the number of required drivers (ICs) is large, and the drivers (ICs) are all manufactured on a printed Circuit Board (PCB for short), which is convenient for splicing, but cannot realize the effect of transparent display.
In conclusion, the LED display screen in the prior art has the problem that transparent display cannot be achieved.
Disclosure of Invention
The application provides an LED display screen module and display device puts the photosphere through increasing in two-layer glass, has solved the unable transparent problem that shows of prior art's LED display screen.
The technical scheme provided by the application is as follows:
the embodiment of the application provides a LED display screen module, LED display screen module includes: the connector comprises a connector and a first glass substrate arranged above the connector;
the driving chips are arranged above the first glass substrate at intervals and comprise scanning line pins, data line pins and control signal pins, and the control signal pins are electrically connected with the connector;
the insulating layer is arranged above the first glass substrate and wraps the driving chip;
the light-emitting diodes are arranged above the insulating layer at intervals and comprise cathodes and anodes, the scanning line pins are electrically connected with the cathodes, the data line pins are electrically connected with the anodes, and the driving chip is used for controlling the light-emitting diodes;
and the second glass substrate is arranged on the plurality of light-emitting diodes.
In the LED display screen module provided in the embodiment of the present application, the LED display screen module further includes a first metal layer and a second metal layer;
the first metal layer is arranged between the plurality of light emitting diodes and the insulating layer;
the second metal layer is arranged between the plurality of driving chips and the connector.
In the LED display screen module provided in the embodiment of the present application, the scan line pin is LED out to the first metal layer, and is electrically connected to the cathode through the first metal layer; the data line pin is led out to the first metal layer and is electrically connected with the anode through the first metal layer.
In the LED display screen module provided by the embodiment of the application, the control signal pin is LED out to the second metal layer, and is electrically connected with the connector through the second metal layer.
In the LED display screen module that this application embodiment provided, the material of insulating layer is transparent material, transparent material includes pyromellitic polyimide or biphenyl type polyimide.
In the LED display screen module provided in the embodiment of the present application, the light emitting diodes are three-primary-color or two-primary-color or single-primary-color light emitting diodes, and the distance between the light emitting diodes is less than or equal to 3 mm.
In the LED display screen module that this application embodiment provided, the connector is connected LED actuating system for realize LED display screen module screen display effect.
In the LED display screen module that this application embodiment provided, the length or the width of connector is less than or equal to 3 millimeters.
The embodiment of the application also provides a display device, display device includes 2 at least LED display screen modules that this application provided, LED display screen module concatenation constitutes wholly.
In the display device provided by the embodiment of the application, the connector is arranged at the vertex angle area of the lower surface of the first glass substrate, and the connector is adjacent to the vertex angle area of the lower surface of the first glass substrate.
The beneficial effect of this application does: the small-space LED display screen module is provided, so that the light emitting diodes of the LED display screen module are arranged between the two layers of glass substrates, the transparent display effect of the LED display screen module is realized, and the area of a non-real area is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a cross-sectional structure diagram of an LED display screen module according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a pixel arrangement in a display area of the display device according to the present embodiment.
Fig. 3 is a schematic diagram illustrating an arrangement of non-display areas of a display device according to an embodiment of the present disclosure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
As shown in fig. 1, the LED display screen module provided in the present application includes a cross-sectional structure diagram: a connector 1 and a first glass substrate 21 disposed above the connector 1;
the plurality of driving chips 3 are arranged above the first glass substrate 21 at equal intervals, the driving chips 3 are arranged above the first glass substrate 21 at intervals, the driving chips 3 comprise scanning line pins, data line pins and control signal pins (not shown in the figure), and the control signal pins are electrically connected with the connector 1;
the insulating layer 4 is arranged above the first glass substrate 21 and wraps the driving chip 3;
a plurality of light emitting diodes 5 disposed above the insulating layer 4, wherein the light emitting diodes 5 are disposed above the insulating layer 4 at intervals, each light emitting diode 5 includes a cathode and an anode (not shown in the figure), the scan line pin is electrically connected to the cathode, and the data line pin is electrically connected to the anode, and the driving chip 3 is configured to control the light emitting diodes 5;
and a second glass substrate 22 provided on the plurality of light emitting diodes 5.
Further, the first glass substrate 21 and the second glass substrate 22 jointly form a glass substrate 2 for packaging the LED display screen module provided in the embodiments of the present application.
Further, the first glass substrate 21 and the second glass substrate 22 generally use a polyimide film (PI) as a base. Polyimide film is the film insulating material with the best performance in the world at present, has stronger tensile strength, and is formed by polycondensation, casting film forming and imidization of pyromellitic dianhydride and diaminodiphenyl ether in a strong polar solvent.
Further, the driving chip 3 is a non-package driving chip, i.e. a wafer, disposed above the first glass substrate 21 and electrically connected to the connector 1, and the driving chip 3 is electrically connected to the light emitting diodes 5 through the uniformly distributed wafers, wherein the driving chip 3 is configured to drive and control the plurality of light emitting diodes 5.
This application embodiment is in first glass substrate 21 lower extreme is provided with connector 1, through setting up connector 1 in the apex angle region of the first glass substrate 21 lower surface of glass for interval is littleer between emitting diode 5 in the LED display screen module that this application provided, and the yields is high.
Further, the LED display screen module further includes a first metal layer and a second metal layer (not shown in the figure), the first metal layer is disposed between the plurality of light emitting diodes and the insulating layer, and the second metal layer is disposed between the plurality of driving chips and the connector; the arrangement of the first metal layer and the second metal layer enables the flat cable inside the LED display screen module to tend to be regular, particularly enables the scanning line pins and the data line pins to be arranged in a staggered mode, and further reduces the thickness of the LED display screen module.
The driving chip comprises scanning line pins, data line pins and control signal pins, the number of the scanning line pins and the number of the data line pins are three or more, and the scanning line pins and the data line pins are arranged in a staggered mode; the scanning line pin is led out to the first metal layer and is electrically connected with the cathode of the light emitting diode through the first metal layer; the data line pin is led out to the first metal layer and is electrically connected with the anode of the light emitting diode through the first metal layer.
The control signal pin is led out to the second metal layer and is electrically connected with the connector through the second metal layer.
In addition, this LED display screen module compares with prior art's LED display screen module structure, has greatly shortened product research and development cycle to it is convenient to maintain, for prior art's LED display screen maintenance cost greatly reduces, in this application if LED display screen module trouble need maintain only with the LED display screen module of trouble lift off the maintenance can, can't maintain the cost on the theoretical cost of need changing when the trouble only be prior art maintenance cost few part.
Furthermore, the small-distance LED pixel wafer of the light emitting diode 5 is transferred to the first glass substrate 21 and the second glass substrate 22 in a gold fixing mode, and the gold fixing mode is a fixing mode, so that disorder of wiring can be reduced, and later maintenance is facilitated; meanwhile, the connector is transferred to the glass substrate in the same way and connected to the driving system, so that the screen display effect can be realized.
Further, the light-emitting layer comprises an LED pixel wafer, and the distance between the light-emitting diodes is less than or equal to 3 mm; the light emitting diode is a tricolor or double-primary color or single-primary color light emitting diode.
Furthermore, the driving chip is a non-packaged driving chip, namely a wafer, the wafer jointly forms the driving chip, the wafer is a silicon wafer used for manufacturing a silicon semiconductor integrated circuit, and the wafer is called a wafer because the shape of the wafer is circular; various circuit device structures can be fabricated on a silicon wafer to form an IC product with specific electrical functions. The starting material for the wafer is silicon, while the crust surface has an inexhaustible amount of silicon dioxide. The silicon dioxide ore is refined by an electric arc furnace, chloridized by hydrochloric acid and distilled to prepare the high-purity polysilicon wafer, and the purity of the polysilicon wafer is as high as 99.999999999%.
Further, for promoting the transparent display effect of LED display screen, the material of insulating layer is transparent material, transparent material includes pyromellitic polyimide or biphenyl type polyimide.
As shown in fig. 2, the figure is a schematic view of a display surface pixel arrangement of the display device provided in this embodiment, in the figure, the display device includes the LED display screen module provided in this embodiment, and the LED display screen module is spliced to form a whole.
The light emitting diodes 5 are in a pixel wafer shape, and comprise an R light emitting diode 51, a G light emitting diode 52 and a B light emitting diode 53, wherein the R light emitting diode 51, the G light emitting diode 52 and the B light emitting diode 53 jointly form a plurality of light emitting diodes 5 of the LED display screen module; further, the interval between the light emitting diodes 5 is less than or equal to 3 mm.
As shown in fig. 3, which is a schematic arrangement diagram of a non-display region driving chip 3 and a connector 1 of a display device provided in an embodiment of the present application, the connector 1 is disposed in a vertex angle region of a lower surface of the first glass substrate 21, the LED display screen modules are spliced to form the display device, and the vertex angle regions where the connectors 1 are located are spliced to each other.
Further, the vertex angle area includes at least one of four corners of the LED display screen module, and the connector 1 is centrally disposed inside the display device as a whole.
Furthermore, the number of the LED display screen modules is four or more than even, and the LED display screen modules are spliced to form the whole display device. The connector 1 is placed in the region where the first glass substrate 21 is concentrated on the top corner as much as possible, so that the opaque area is reduced during splicing.
The present embodiment also provides a driving architecture and a method for an LED display screen module, where the LED display screen module is connected to a driving system, and the driving system includes:
the system receives Interface data from a Digital Visual Interface (DVI for short);
transmitting a differential signal to a transmission part according to the digital video interface data;
transmitting a data transmission signal to a receiving system according to the differential signal;
the data transmission signal is transmitted to a driving circuit, the driving circuit drives the LED display screen module, and the LED display screen emits light.
Further, in the differential signal transmission of the transmission part according to the digital video interface data, the digital video interface data is transmitted to a sending system of the LED module through a digital video decoding circuit; further, the transmission system includes two data memories and a Field Programmable Gate Array (FPGA) controller. The sending system receives Digital video Interface data transmitted by a Digital video Interface (DVI for short) decoding circuit, the Digital video Interface data is processed by the FPGA controller and is cached and stored by the data storage device, and the Digital video Interface data is sent to the display system.
Further, the display system comprises a pair of ethernet transmitter and transformer, when the ethernet transmitter receives the DVI interface data from the transmission system, the ethernet transmitter transmits the DVI interface data to the transformer, the DVI interface data is converted into a differential signal by the transformer transmission, and then the differential signal is transmitted to the ethernet transmitter by the transformer and transmitted to the receiving circuit by the display system.
Further, the receiving circuit comprises a data memory and an FPGA controller which are paired, when the receiving system receives the differential signal transmitted from the transmission part, the differential signal enters the FPGA controller for storage processing, and the data signal is transmitted to the driving circuit.
The LED display screen module that this application provided is driven to the drive circuit, the emitting diode of LED display screen module shines.
Compared with the LED display screen module provided by the prior art, the LED display screen module provided by the application is matched with the LED driving method, the LED display screen module in the prior art is driven by a passive mode, needs a large number of LED display screen modules, and is manufactured on a printed Circuit Board (PCB for short), so that the LED display screen module is convenient to splice, and the transparent display effect cannot be realized; according to the LED display screen module, the transparent display effect of the LED display screen module is realized by arranging the areas of the plurality of driving chips and the connectors, and the area of a non-real area is reduced; the application provides a driving method suitable for the LED display module, and the implementation mode of the transparent LED display screen module is realized.
The beneficial effects are that: the small-space LED display screen module is provided, so that the light emitting diodes of the LED display screen module are arranged between the two layers of glass substrates, the transparent display effect of the LED display screen module is realized, and the area of a non-real area is reduced.
In addition to the above embodiments, other embodiments are also possible. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present application.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (9)
1. The utility model provides a LED display screen module which characterized in that, LED display screen module includes: the connector comprises a connector and a first glass substrate arranged above the connector;
the driving chips are arranged above the first glass substrate at intervals and comprise scanning line pins, data line pins and control signal pins, and the control signal pins are electrically connected with the connector;
the insulating layer is arranged above the first glass substrate and wraps the driving chip;
the light-emitting diodes are arranged above the insulating layer at intervals and comprise cathodes and anodes, the scanning line pins are electrically connected with the cathodes, the data line pins are electrically connected with the anodes, and the driving chip is used for controlling the light-emitting diodes;
the second glass substrate is arranged on the plurality of light-emitting diodes;
the connector is arranged in a vertex angle area of the lower surface of the first glass substrate, and the vertex angle area comprises four corners of the LED display screen module.
2. The LED display screen module of claim 1, wherein the LED display screen module further comprises a first metal layer and a second metal layer;
the first metal layer is arranged between the plurality of light emitting diodes and the insulating layer;
the second metal layer is arranged between the plurality of driving chips and the connector.
3. The LED display screen module of claim 2, wherein the scan line pin is LED out to the first metal layer and is electrically connected with the cathode through the first metal layer; the data line pin is led out to the first metal layer and is electrically connected with the anode through the first metal layer.
4. The LED display screen module of claim 2, wherein the control signal pin is LED out to the second metal layer and electrically connected to the connector through the second metal layer.
5. The LED display screen module of claim 1, wherein the insulating layer is made of a transparent material, and the transparent material comprises a pyromellitic polyimide or biphenyl polyimide.
6. The LED display screen module of claim 1, wherein the LEDs are tricolor or bi-color or mono-color LEDs, and the LED pitch is less than or equal to 3 mm.
7. The LED display screen module of claim 1, wherein the connector is connected to an LED driving system for realizing the screen display effect of the LED display screen module.
8. The LED display screen module of claim 1, wherein the connector has a length or width of less than or equal to 3 mm.
9. A display device, comprising at least four and even more LED display screen modules according to any one of claims 1 to 8, wherein the LED display screen modules are assembled into a whole;
in two adjacent LED display screen modules, the vertex angle areas where the connectors are located are spliced with each other.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038416.5A CN109785760B (en) | 2019-01-16 | 2019-01-16 | LED display screen module and display device |
| PCT/CN2019/083054 WO2020147212A1 (en) | 2019-01-16 | 2019-04-17 | Led display screen module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038416.5A CN109785760B (en) | 2019-01-16 | 2019-01-16 | LED display screen module and display device |
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| Publication Number | Publication Date |
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| CN109785760A CN109785760A (en) | 2019-05-21 |
| CN109785760B true CN109785760B (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910038416.5A Active CN109785760B (en) | 2019-01-16 | 2019-01-16 | LED display screen module and display device |
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| CN (1) | CN109785760B (en) |
| WO (1) | WO2020147212A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11257421B2 (en) * | 2019-08-24 | 2022-02-22 | Huayuan Semiconductor (Shenzhen) Limited Company | Display device with single package light emitting diode and driver circuit |
| CN110827709B (en) * | 2019-11-26 | 2023-05-23 | 苏州佳世达电通有限公司 | Display module |
| US10909911B1 (en) | 2020-09-18 | 2021-02-02 | Huayuan Semiconductor (Shenzhen) Limited Company | Display device with distributed driver circuits and shared multi-wire communication interface for dimming data |
| CN114203068A (en) * | 2021-12-22 | 2022-03-18 | 常州明耀半导体科技有限公司 | Integrated LED display module and LED display screen |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020147212A1 (en) | 2020-07-23 |
| CN109785760A (en) | 2019-05-21 |
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