CN111489691A - Display device - Google Patents
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- CN111489691A CN111489691A CN202010491509.6A CN202010491509A CN111489691A CN 111489691 A CN111489691 A CN 111489691A CN 202010491509 A CN202010491509 A CN 202010491509A CN 111489691 A CN111489691 A CN 111489691A
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- light
- display
- data
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention discloses a display device, comprising: the display module, the power supply module and the control module are positioned on the transparent flexible film; the power supply module is respectively electrically connected with the display module and the control module and is used for supplying power to the display module and the control module; the display module comprises a plurality of light-emitting units which are electrically connected in sequence; the control module is electrically connected with the display module and is used for controlling the plurality of light-emitting units to emit light. The display device provided by the embodiment of the invention realizes the flexible display device with high transparency.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display device.
Background
The light emitting diode (L ED) display screen is a device system for information display by controlling the light emission of a L ED matrix, has the advantages of low voltage drive, environmental protection, energy conservation, high brightness, large scattering angle, good consistency, ultralow power, overlong service life and the like, and is the only large-scale display terminal capable of being used outdoors in all weather.
L ED display screen on the market at present mainly uses PCB board as circuit and L ED lamp carrier, and is rigid material that is not foldable and bendable, and heavy and has no transparency, and in some special occasions, such as glass curtain wall, shop window, stereo billboard, stage background, hotel, airport, etc. the L ED display module needs good light transmission, and at the same time, the display screen is expected to have functions of bending, stretching, etc. to facilitate the installation, transportation and maintenance of the display screen in the non-planar area.
Disclosure of Invention
The invention provides a display device to realize a flexible display device with high transparency.
An embodiment of the present invention provides a display device, including:
the display module, the power supply module and the control module are positioned on the transparent flexible film;
the power supply module is electrically connected with the display module and the control module respectively, and is used for supplying power to the display module and the control module;
the display module comprises a plurality of light-emitting units which are electrically connected in sequence;
the control module is electrically connected with the display module and is used for controlling the plurality of light-emitting units to emit light.
Optionally, the light emitting unit includes an input terminal, an output terminal, a power terminal, and a ground terminal;
the power supply ends of the light-emitting units are electrically connected with the power supply module, and the grounding ends of the light-emitting units are grounded;
the light-emitting units are arranged in an array, and are sequentially numbered in any sequence, wherein the input end of the 1 st light-emitting unit is electrically connected with the data output end of the control module, the output end of the Nth light-emitting unit is electrically connected with the input end of the (N + 1) th light-emitting unit, and N is a positive integer which is more than or equal to 2 and less than the total number of the light-emitting units.
Optionally, the light emitting unit includes a data distribution circuit, and the data distribution circuit is configured to receive, decode, and forward the display data.
Optionally, the light emitting unit further includes a data latch, the data latch is electrically connected to the data distribution circuit, and the data latch is configured to latch display data of a preset unit.
Optionally, the preset unit is 24 bits.
Optionally, the light emitting unit further includes a constant current driving circuit and an RGB chip;
the constant current driving circuit is respectively electrically connected with the data latch and the RGB chip and is used for controlling the RGB chip to emit light.
Optionally, the light emitting unit further includes a signal shaping and amplifying circuit, where the signal shaping and amplifying circuit is configured to perform waveform shaping and amplifying on subsequent display data and output the subsequent display data, where the subsequent display data is display data received by the light emitting unit after receiving display data of a preset unit.
Optionally, the plurality of light emitting units are welded on the transparent flexible film through silver paste;
the light-emitting units are electrically connected through silver paste conducting circuits.
Optionally, the transparent flexible film is made of polypropylene.
Optionally, the control module is a micro control unit.
According to the technical scheme provided by the embodiment of the invention, the plurality of light-emitting units which are electrically connected in sequence are arranged on the transparent flexible film, so that the control module can control the plurality of light-emitting units to emit light only by one signal wire, the problems of heaviness and no transparency of the display device in the prior art are solved, and the flexible display device with high transparency is realized.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light emitting unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a data structure according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention, and as shown in fig. 1, the display device according to the embodiment of the present invention includes: a transparent flexible film 11, and a display module 12, a power supply module 13 and a control module 14 positioned on the transparent flexible film 11. The power module 13 is electrically connected to the display module 12 and the control module 14, and the power module 13 is configured to supply power to the display module 12 and the control module 14. The display module 12 includes a plurality of light emitting units 121, and the plurality of light emitting units 121 are electrically connected in sequence. The control module 14 is electrically connected to the display module 12 and is used for controlling the plurality of light emitting units 121 to emit light.
According to the technical scheme provided by the embodiment of the invention, the plurality of light-emitting units 121 which are electrically connected in sequence are arranged on the transparent flexible film 11, so that the control module 14 can control the plurality of light-emitting units 121 to emit light only by one signal wire, the problems of heavy weight and no transparency of the display device in the prior art are solved, and the flexible display device with high transparency is realized.
As shown in fig. 1, the light emitting unit 121 optionally includes an input terminal DI, an output terminal DO, a power terminal VDD, and a ground terminal GND 1. The power terminals VDD of the plurality of light emitting cells 121 are all electrically connected to the power module 13, and the ground terminals GND1 of the plurality of light emitting cells 121 are all grounded. The light emitting units 121 are arranged in an array, and the light emitting units 121 are sequentially numbered in any order, wherein an input end DI of the 1 st light emitting unit 121 is electrically connected to a data output end 141 of the control module 14, an output end DO of the nth light emitting unit 121 is electrically connected to an input end DI of the N +1 th light emitting unit 121, and N is a positive integer greater than or equal to 2 and less than the total number of the light emitting units 121.
Exemplarily, the light emitting units 121 are arranged in a rectangular array on the transparent flexible film 11, and the light emitting units 121 are sequentially numbered in a serpentine arrangement, as shown in fig. 1, the light emitting unit 121 at the upper right corner of the display module 12 is the 1 st light emitting unit, the input end DI of the 1 st light emitting unit 121 is electrically connected to the data output end 141 of the control module 14, the light emitting units 121 in the 1 st row are electrically connected from right to left, the output end DO of the leftmost light emitting unit 121 in the 1 st row is electrically connected to the input end DI of the leftmost light emitting unit 121 in the 2 nd row, the light emitting units 121 in the 2 nd row are electrically connected from left to right, and so on.
The control module 14 sends display data to the display module 12, when the 1 st light-emitting unit 121 receives and extracts data required for self light emission, the 1 st light-emitting unit 121 forwards the subsequently received display data to the 2 nd light-emitting unit 121 chip, and after the 2 nd light-emitting unit 121 chip also extracts data required for self light emission, the subsequently received display data is forwarded to the 3 rd light-emitting unit 121, and so on, the display data sent to the display module 12 by the control module 14 is reduced by one light-emitting unit 121 every time, and the length of the display data sent to the display module 12 by the control module 14 can control the number of the light-emitting units 121 for display. The light emitting unit 121 extracts data necessary for its own light emission, and then emits light according to the extracted data, thereby realizing display of an image through one signal line.
Optionally, the power source terminals VDD of the multiple light emitting units 121 are electrically connected to the first output terminal 131 of the power module 13, the power source input terminal 142 of the control module 14 is electrically connected to the second output terminal 132 of the power module 13, and the power module 13 can implement DC _ DC direct-current voltage conversion, so that the power module 13 can provide different voltages for the display module 12 and the control module 14, for example, the first output terminal 131 of the power module 13 provides a voltage of 5V for the multiple light emitting units 121, and the second output terminal 132 of the power module 13 provides a voltage of 12V for the control module 14. The ground terminals GND1 of the plurality of light emitting cells 121 may be connected to the ground terminal GND2 of the power module 13, thereby saving wiring harnesses. The ground terminal GND4 of the control module 14 is connected to the ground terminal GND3 of the power module 13, so as to improve the anti-interference and anti-electrostatic field impact capabilities and protect the electronic device.
Fig. 2 is a schematic structural diagram of a light-emitting unit according to an embodiment of the present invention, as shown in fig. 2, optionally, the light-emitting unit 121 includes a data distribution circuit 21, and the data distribution circuit 21 is configured to receive, decode, and forward display data.
After the power-on reset of the display module 12, the data distribution circuit 21 of the light-emitting unit 121 receives the data transmitted from the control module 14 through the input terminal DI, extracts the data required for self light emission, and forwards the remaining received data to the next light-emitting unit 121 through the output terminal DO. Optionally, the data protocol adopts a single-line return-to-zero code communication mode, so that transmission of the display data has a better noise suppression characteristic.
As shown in fig. 2, optionally, the light emitting unit 121 further includes a data latch 22, the data latch 22 is electrically connected to the data distribution circuit 21, and the data latch 22 is used for latching the display data of the preset unit.
After the display module 12 is reset by power-on, the data distribution circuit 21 of the light-emitting unit 121 receives the data transmitted from the control module 14 through the input terminal DI, extracts the data of the preset unit required for self light emission, latches the extracted display data of the preset unit in the data latch 22, forwards the remaining received data to the next light-emitting unit 121 through the output terminal DO, and after the remaining light-emitting units 121 all receive the data, the light-emitting units 121 emit light according to the data of the data latch 22, thereby completing a data refresh cycle.
Optionally, the preset unit is 24 bits.
After the first 24bit data of the display data sent by the control module 14 is extracted by the 1 st light emitting unit 121, the data is latched in the data latch 22 inside the 1 st light emitting unit 121, the remaining display data is forwarded and output to the next cascaded light emitting unit 121 through the output end DO, and the display data sent by the control module 14 is reduced by 24 bits each time the display data is transmitted by one light emitting unit 121.
For example, fig. 3 is a schematic diagram of a data structure provided by an embodiment of the present invention, and as shown in fig. 3, in 24-bit display data, the first 8 bits (G7-G0) may be used to display green light, the middle 8 bits (R7-R0) may be used to display red light, and the last 8 bits (B7-B0) may be used to display blue light, so as to implement full-color display of the display module 12.
As shown in fig. 2, the light emitting unit 121 may further include a constant current driving circuit 23 and an RGB chip 24. The constant current driving circuit 23 is electrically connected to the data latch 22 and the RGB chip 24, respectively, and the constant current driving circuit 23 is configured to control the RGB chip 24 to emit light.
Here, when the light emitting unit 121 emits light, the constant current driving circuit 23 controls the RGB chip 24 to emit light according to the data in the data latch 22, thereby displaying an image. The constant current driving circuit 23 can effectively ensure the uniformity of the light emitting color of the light emitting unit 121.
As shown in fig. 2, optionally, the light emitting unit 121 further includes a signal shaping amplifying circuit 27, where the signal shaping amplifying circuit 27 is configured to perform waveform shaping and amplifying on subsequent display data, and then output the subsequent display data, where the subsequent display data is display data received by the light emitting unit 121 after receiving the display data of the preset unit.
After the data distribution circuit 21 of the light emitting unit 121 extracts the display data of a preset unit, the subsequent display data is sent to the signal shaping and amplifying circuit 27, the shaping and amplifying circuit 27 performs waveform shaping on the subsequent display data and forwards the subsequent display data to the next cascaded light emitting unit 121 through the output terminal DO after amplification, so that the distortion of the line waveform is not accumulated, and by adopting an automatic shaping and forwarding technology, the cascade number of the light emitting units 121 is not limited by signal transmission, but only the requirement of signal transmission speed is limited, so that the ultra-long transmission distance can be realized, and the manufacturing of a display device with a larger size is facilitated.
Optionally, the light emitting units 121 are welded on the transparent flexible film 11 through a silver paste, and the light emitting units 121 are electrically connected through a silver paste conductive circuit.
Illustratively, the silver paste is low-temperature normal-temperature curing conductive silver paste, which has the advantages of low curing temperature, extremely high bonding strength, stable electrical property, suitability for screen printing and the like, and can avoid the damage of the transparent flexible film 11 during welding.
Optionally, the material of the transparent flexible film 11 is polypropylene.
The transparent flexible film 11 is made of Polypropylene (PT) which is made of pure high polymer materials, and has the advantages of high transparency, no toxicity, acid and alkali resistance, good strength, long service life and no deformation.
Optionally, the control module 14 is a Microcontroller Unit (MCU).
The MCU is small in size, good in reliability, low in power consumption, easy to expand and low in cost. The display of the image can be controlled by writing data to the display module 12 through a program in the MCU.
To sum up, exemplarily, the control module 14 sends display data to the display module 12, after the 1 st light emitting unit 121 receives and extracts 24-bit display data, the first transmitted 24-bit data is extracted by the 1 st light emitting unit 121 and then sent to the data latch 22 inside the 1 st light emitting unit 121, the subsequent display data is shaped and amplified by the internal signal shaping and amplifying circuit 27 and then forwarded to the next cascaded light emitting unit 121 through the DO port, if the control module 14 sends a RESET signal, all the light emitting units 121 are RESET, the constant current driving circuit 23 controls the RGB chip 24 to emit light according to the 24-bit data latched by the data latch 22, and thus, a data refresh cycle is completed, and the light emitting unit 121 returns to the receiving preparation state. Optionally, the duration of the RESET signal is greater than or equal to 280 μ s, and the longer duration of the RESET signal enables interruption in data transmission to avoid false resetting of the light emitting unit 121, and the display device can support an MCU with a lower frequency and a lower price, which is beneficial to reducing the cost of the display device.
Optionally, the RGB chip 24 employs a light emitting diode (L ED) light source, wherein the L ED has advantages of low voltage driving, environmental protection, energy saving, high brightness, large scattering angle, good consistency, ultra-low power, ultra-long lifetime, and the like.
Optionally, the constant current driving circuit 23 is integrated on the RGB chip 24, so that the circuit structure becomes simpler, and the circuit structure is smaller and simpler to mount.
In other embodiments, the data distribution circuit 21, the data latch 22, the constant current driving circuit 23, the RGB chip 24, and the signal shaping and amplifying circuit 27 may be integrated into a 2020 packaged device to form the light emitting unit 121 capable of intelligent external control, and the exterior of the light emitting unit 121 may adopt the latest MO L DING packaging process, the data distribution circuit 21, the data latch 22, the constant current driving circuit 23, and the signal shaping and amplifying circuit 27 may adopt other Integrated Circuits (ICs) as long as the same function is achieved, for example, an intelligent digital interface data latch signal shaping and amplifying driving circuit, a high-precision internal oscillator, and a programmable constant current control circuit are adopted, thereby effectively ensuring the color height of the spot light of the light emitting unit 121 to be consistent, wherein, the intelligent digital interface data latch signal shaping and amplifying driving circuit is adopted, the port scanning frequency may be up to 2KHz, so that the display device does not flicker under the capture of a high definition camera, which is very suitable for the use of high-speed mobile products, the display device provided by the embodiments of the present invention, the light emitting unit 121 is arranged on the transparent film 11 by soldering with silver paste, the transparent film, the light emitting unit is sequentially connected to the conductive circuit, the light emitting unit is connected to the display device, thereby the display device, the display device is capable of achieving the low-distance control of achieving the display device, and the display device, thereby, the display device is beneficial to achieve the display device, the display.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display device, comprising:
the display module, the power supply module and the control module are positioned on the transparent flexible film;
the power supply module is electrically connected with the display module and the control module respectively, and is used for supplying power to the display module and the control module;
the display module comprises a plurality of light-emitting units which are electrically connected in sequence;
the control module is electrically connected with the display module and is used for controlling the plurality of light-emitting units to emit light.
2. The display device according to claim 1, wherein the light emitting unit includes an input terminal, an output terminal, a power terminal, and a ground terminal;
the power supply ends of the light-emitting units are electrically connected with the power supply module, and the grounding ends of the light-emitting units are grounded;
the light-emitting units are arranged in an array, and are sequentially numbered in any sequence, wherein the input end of the 1 st light-emitting unit is electrically connected with the data output end of the control module, the output end of the Nth light-emitting unit is electrically connected with the input end of the (N + 1) th light-emitting unit, and N is a positive integer which is more than or equal to 2 and less than the total number of the light-emitting units.
3. The display device according to claim 1, wherein the light emitting unit comprises a data distribution circuit for receiving, decoding and forwarding display data.
4. The display device according to claim 3, wherein the light emitting unit further comprises a data latch electrically connected to the data distribution circuit, the data latch being configured to latch a predetermined unit of display data.
5. The display device according to claim 4, wherein the preset unit is 24 bits.
6. The display device according to claim 4, wherein the light emitting unit further comprises a constant current driving circuit and an RGB chip;
the constant current driving circuit is respectively electrically connected with the data latch and the RGB chip and is used for controlling the RGB chip to emit light.
7. The display device according to any one of claims 4 to 6, wherein the light-emitting unit further comprises a signal shaping and amplifying circuit configured to output subsequent display data after waveform shaping and amplification are performed on the subsequent display data, wherein the subsequent display data is display data received by the light-emitting unit after receiving display data of a preset unit.
8. The display device according to claim 1, wherein the plurality of light emitting units are soldered on the transparent flexible film by silver paste;
the light-emitting units are electrically connected through silver paste conducting circuits.
9. The display device according to claim 1, wherein the material of the transparent flexible film is polypropylene.
10. The display device according to claim 1, wherein the control module is a micro control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491509.6A CN111489691A (en) | 2020-06-02 | 2020-06-02 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010491509.6A CN111489691A (en) | 2020-06-02 | 2020-06-02 | Display device |
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| CN111489691A true CN111489691A (en) | 2020-08-04 |
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| CN202010491509.6A Pending CN111489691A (en) | 2020-06-02 | 2020-06-02 | Display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111785206A (en) * | 2020-08-13 | 2020-10-16 | 大连集思特科技有限公司 | Wearable flexible transparent display system |
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| US20050151708A1 (en) * | 2004-01-12 | 2005-07-14 | Farmer Ronald E. | LED module with uniform LED brightness |
| CN101545591A (en) * | 2008-03-26 | 2009-09-30 | 北京巨数数字技术开发有限公司 | PCB light bar used in LED display and transmission control system thereof |
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Application publication date: 20200804 |