CN111899687A - Display assembly and display - Google Patents
Display assembly and display Download PDFInfo
- Publication number
- CN111899687A CN111899687A CN202010885202.4A CN202010885202A CN111899687A CN 111899687 A CN111899687 A CN 111899687A CN 202010885202 A CN202010885202 A CN 202010885202A CN 111899687 A CN111899687 A CN 111899687A
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- electrically connected
- driving circuit
- substrate
- controller
- emitting layer
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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
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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)
Abstract
The present invention provides a display assembly comprising: the device comprises a substrate, a light emitting layer arranged on a first surface of the substrate, a controller arranged on a second surface of the substrate, a driving circuit and a sampling loop; the sampling loop is electrically connected with the luminescent layer, the input end of the driving circuit is used for being connected with a power supply, the output end of the driving circuit is electrically connected with the luminescent layer, the output end of the controller is electrically connected with the control end of the driving circuit, and the input end of the controller is electrically connected with the sampling loop; the controller is used for collecting the residual voltage of the light-emitting layer according to the sampling loop and generating a control signal to the driving circuit so as to adjust the voltage output to the light-emitting layer, and the problem that brightness can occur due to the residual voltage left in the light-emitting tube is solved.
Description
Technical Field
The invention relates to the field of micro-LEDs, in particular to a display assembly and a display.
Background
Micro LED technology, i.e. LED scaling and matrixing technology. Refers to the size of high-density micro-sized LED integrated on a chip, such as the addressable and individually driven lighting of each pixel of an LED display screen, and the pixel grade is reduced from millimeter grade to micron grade. The Micro LED not only inherits the advantages of high efficiency, high brightness, high reliability and quick response time of the traditional LED, but also has the characteristics of energy conservation, simple mechanism, small volume, thinness and no need of backlight source for light emission.
In the prior art, the configuration pixel on the display substrate that is shaded from the sun, give off light through the pixel and develop, wherein the pixel is generally including the illuminating part of three kinds of colours red, green, blue three-colour micro-LED, in the display process, the condition that briefly extinguishes can appear in the micro-LED illuminating part, and under the condition of extinguishing, leave residual voltage on the illuminating part, if supply power to the illuminating part according to original voltage, the too big condition of local pixel point luminance can appear, if there is a large amount of pixel luminance too big on a base plate if the result, then can influence the use experience of whole display.
In view of this, the present application is presented.
Disclosure of Invention
The invention discloses a display assembly and a display, and aims to solve the problem that the brightness is caused by residual voltage left in a light-emitting tube.
A first embodiment of the present invention provides a display assembly including: the device comprises a substrate, a light emitting layer arranged on a first surface of the substrate, a controller arranged on a second surface of the substrate, a driving circuit and a sampling loop;
the sampling loop is electrically connected with the luminescent layer, the input end of the driving circuit is used for being connected with a power supply, the output end of the driving circuit is electrically connected with the luminescent layer, the output end of the controller is electrically connected with the control end of the driving circuit, and the input end of the controller is electrically connected with the sampling loop;
the controller is used for collecting the residual voltage of the light emitting layer according to the sampling loop and generating a control signal to the driving circuit so as to adjust the voltage output to the light emitting layer.
Preferably, the light-emitting layer comprises pixel dots arrayed on the first surface of the substrate.
Preferably, each pixel point comprises at least one red micro-LED luminous tube, at least one green micro-LED luminous tube and at least one blue micro-LED luminous tube.
Preferably, the second surface of the substrate is configured with a connection terminal, wherein each pixel point is electrically connected to the connection terminal through a sampling line and a power line, and the driving circuit and the sampling loop are electrically connected to the connection terminal.
Preferably, the drive circuit comprises a buck converter;
the input end of the buck converter is used for being connected with a power supply, the output end of the buck converter is electrically connected with the output end of the controller, and the output end of the buck converter is electrically connected with the wiring terminal.
A second embodiment of the invention provides a display comprising a power supply and a display module as described in any of the above, wherein an output of the power supply is electrically connected to an input of the driving circuit.
Based on the display assembly and the display provided by the invention, the sampling circuit is used for collecting the residual voltage on the light-emitting layer, the controller outputs the pulse width modulation signal to the driving circuit according to the collected residual voltage, the driving circuit outputs the corresponding voltage value to the light-emitting layer according to the pulse width modulation signal, and the light-emitting layer can emit quantitative light, so that the problem that the whole substrate is abnormal in color development due to the influence of the residual voltage can be avoided.
Drawings
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The invention discloses a display assembly and a display, and aims to solve the problem that the brightness is caused by residual voltage left in a light-emitting tube.
Referring to fig. 1, a display assembly according to a first embodiment of the present invention includes: the device comprises a substrate, a light-emitting layer 4 arranged on the first surface of the substrate, a controller 1 arranged on the second surface of the substrate, a driving circuit 3 and a sampling circuit 2;
the sampling loop 2 is electrically connected with the luminescent layer 4, the input end of the driving circuit 3 is used for connecting a power supply 5, the output end of the driving circuit 3 is electrically connected with the luminescent layer 4, the output end of the controller 1 is electrically connected with the control end of the driving circuit 3, and the input end of the controller 1 is electrically connected with the sampling loop 2;
the controller 1 is configured to collect the residual voltage of the light emitting layer 4 according to the sampling loop 2 and generate a control signal to the driving circuit 3, so as to adjust the voltage output to the light emitting layer 4.
In the present embodiment, the driving circuit 3 is configured to provide a suitable voltage value to the light emitting layer 4 to enable the light emitting layer 4 to display a required brightness, however, in the prior art, the influence of a residual voltage on a pixel on the light emitting layer 4 is not considered, in the present embodiment, the sampling circuit 2 collects the magnitude of the residual voltage, the controller 1 outputs the pulse width modulation signal driving circuit 3 according to the magnitude of the residual voltage, and the driving circuit 3 can control the voltage output to the light emitting layer 4 to ensure that the substrate displays the required brightness.
In this embodiment, the light-emitting layer 4 comprises pixels arrayed on the first surface of the substrate.
It should be noted that the pixel points may be fixed on the substrate by a conductive adhesive, or may be fixed on the substrate by welding, which is not specifically limited herein, but these schemes are all within the protection scope of the present invention.
In this embodiment, each pixel point includes at least one red micro-LED, green micro-LED, and blue micro-LED.
It should be noted that the light emitting tubes may be light emitting diodes, and one pixel point may be arranged on the substrate by connecting one or more light emitting diodes of different colors in series, specifically, for example, two red micro-LED light emitting tubes in series, two blue micro-LED light emitting tubes in series, and two green micro-LED light emitting tubes in series, and then arranging them on the first surface of the substrate, where the number of the micro-LED light emitting tubes in series may be set according to actual conditions, and is not specifically limited herein, but these schemes are within the protection scope of the present invention.
In this embodiment, the second surface of the substrate is configured with a connection terminal, wherein each of the pixels is electrically connected to the connection terminal through a sampling line and a power supply 5 line, and the driving circuit 3 and the sampling loop 2 are electrically connected to the connection terminal.
It should be noted that the wiring terminal is used as an electrical connection point of the whole reflective layer, which can standardize wiring layout and avoid wiring disorder, and it can be understood that each light emitting tube on each pixel point has one sampling line and one power supply 5 line connected to the wiring terminal, and the wiring terminal is respectively connected to the controller 1 and the driving circuit 3, wherein the wiring terminal is connected to the sampling line connected to the controller 1, and connected to the power supply 5 line connected to the driving circuit 3.
In the present embodiment, the drive circuit 3 includes a buck converter;
the input end of the buck converter is used for being connected with a power supply 5, the output end of the buck converter is electrically connected with the output end of the controller 1, and the output end of the buck converter is electrically connected with the wiring terminal.
It should be noted that the external power source 5, usually the power source 5 of the commercial power AC220V, needs to be converted into a voltage of, for example, DC24 by the switching power source 5 or other AC/DC circuit, but the voltage of DC24V is still larger for the led, and needs to be converted into a smaller DC voltage, for example, DC5V or 3.3V, but in the case of a residual voltage, the voltage of DC5V or 3.3V is continuously provided to the led, which may cause a brightness value exceeding the originally set brightness value, for example, the luminance of the led at 3.3V is 10, after a short time of extinction, the residual voltage is 0.3V, if the original voltage is applied to the led, the voltage value is 3.6V, the luminance is 15, if there are many places on the whole substrate, such as brightness value is higher than the preset brightness, the substrate may have a color non-uniformity problem, in this embodiment, a sampling circuit is configured to collect the residual voltage of 0.3V, the output of the controller 1 is subjected to pulse width modulation, and the output of the control voltage is 3V, so that the brightness of the pixel point cannot be over-bright.
A second embodiment of the invention provides a display comprising a power supply 5 and a display module as described in any one of the above, the output of the power supply 5 being electrically connected to the input of the driving circuit 3.
Based on the display assembly and the display provided by the invention, the sampling circuit is used for collecting the residual voltage on the light-emitting layer 4, the controller 1 outputs the pulse width modulation signal to the driving circuit 3 according to the collected residual voltage, the driving circuit 3 outputs the corresponding voltage value to the light-emitting layer 4 according to the pulse width modulation signal, and the light-emitting layer 4 can emit quantitative light, so that the problem that the whole substrate is abnormal in color development due to the influence of the residual voltage can be avoided.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.
Claims (6)
1. A display assembly, comprising: the device comprises a substrate, a light emitting layer arranged on a first surface of the substrate, a controller arranged on a second surface of the substrate, a driving circuit and a sampling loop;
the sampling loop is electrically connected with the luminescent layer, the input end of the driving circuit is used for being connected with a power supply, the output end of the driving circuit is electrically connected with the luminescent layer, the output end of the controller is electrically connected with the control end of the driving circuit, and the input end of the controller is electrically connected with the sampling loop;
the controller is used for collecting the residual voltage of the light emitting layer according to the sampling loop and generating a control signal to the driving circuit so as to adjust the voltage output to the light emitting layer.
2. A display element according to claim 1 wherein the light-emitting layer comprises pixels arrayed on the first surface of the substrate.
3. The display assembly of claim 2, wherein each pixel point comprises at least one of a red micro-LED, a green micro-LED and a blue micro-LED.
4. The display module of claim 2, wherein the second surface of the substrate is configured with a connection terminal, wherein each pixel is electrically connected to the connection terminal through a sampling line and a power line, and the driving circuit and the sampling loop are electrically connected to the connection terminal.
5. A display module as claimed in claim 4, characterized in that the drive circuit comprises a buck converter;
the input end of the buck converter is used for being connected with a power supply, the output end of the buck converter is electrically connected with the output end of the controller, and the output end of the buck converter is electrically connected with the wiring terminal.
6. A display comprising a power supply and a display module according to any one of claims 1 to 5, an output of the power supply being electrically connected to an input of the driver circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885202.4A CN111899687A (en) | 2020-08-28 | 2020-08-28 | Display assembly and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885202.4A CN111899687A (en) | 2020-08-28 | 2020-08-28 | Display assembly and display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111899687A true CN111899687A (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010885202.4A Pending CN111899687A (en) | 2020-08-28 | 2020-08-28 | Display assembly and display |
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| CN (1) | CN111899687A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050023992A1 (en) * | 2003-07-17 | 2005-02-03 | Analog Integrations Corporation | Method for driving light emitting diode |
| JP2009141159A (en) * | 2007-12-07 | 2009-06-25 | Toyo Sangyo Kk | Inspecting device and inspection method of protection device |
| US20140159594A1 (en) * | 2008-09-12 | 2014-06-12 | Rui Teng Opto Technology Co., Ltd. | Light source device with light-emitting diode module |
| CN108492778A (en) * | 2018-03-02 | 2018-09-04 | 昆山国显光电有限公司 | A kind of pixel circuit, organic electroluminescence panel and display device |
| CN109387978A (en) * | 2017-08-03 | 2019-02-26 | 苹果公司 | Local display back light system and method |
| CN110612565A (en) * | 2017-05-19 | 2019-12-24 | 苹果公司 | LED driver headroom voltage control system and method |
| CN110676282A (en) * | 2019-10-16 | 2020-01-10 | 福州大学 | Full-color mu LED micro-display device without electrical contact and manufacturing method thereof |
| CN111200052A (en) * | 2018-10-31 | 2020-05-26 | 茂丞科技股份有限公司 | Wafer-level light-emitting panel module and manufacturing method thereof |
-
2020
- 2020-08-28 CN CN202010885202.4A patent/CN111899687A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050023992A1 (en) * | 2003-07-17 | 2005-02-03 | Analog Integrations Corporation | Method for driving light emitting diode |
| JP2009141159A (en) * | 2007-12-07 | 2009-06-25 | Toyo Sangyo Kk | Inspecting device and inspection method of protection device |
| US20140159594A1 (en) * | 2008-09-12 | 2014-06-12 | Rui Teng Opto Technology Co., Ltd. | Light source device with light-emitting diode module |
| CN110612565A (en) * | 2017-05-19 | 2019-12-24 | 苹果公司 | LED driver headroom voltage control system and method |
| CN109387978A (en) * | 2017-08-03 | 2019-02-26 | 苹果公司 | Local display back light system and method |
| CN108492778A (en) * | 2018-03-02 | 2018-09-04 | 昆山国显光电有限公司 | A kind of pixel circuit, organic electroluminescence panel and display device |
| CN111200052A (en) * | 2018-10-31 | 2020-05-26 | 茂丞科技股份有限公司 | Wafer-level light-emitting panel module and manufacturing method thereof |
| CN110676282A (en) * | 2019-10-16 | 2020-01-10 | 福州大学 | Full-color mu LED micro-display device without electrical contact and manufacturing method thereof |
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Application publication date: 20201106 |
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