CN202033976U - High-gray-scale high-refresh-rate full-color display screen - Google Patents
High-gray-scale high-refresh-rate full-color display screen Download PDFInfo
- Publication number
- CN202033976U CN202033976U CN2011201310134U CN201120131013U CN202033976U CN 202033976 U CN202033976 U CN 202033976U CN 2011201310134 U CN2011201310134 U CN 2011201310134U CN 201120131013 U CN201120131013 U CN 201120131013U CN 202033976 U CN202033976 U CN 202033976U
- Authority
- CN
- China
- Prior art keywords
- display screen
- resistance
- constant current
- full
- drive circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A high-gray-scale high-refresh-rate full-color display screen comprises a full-color light-emitting diode array display module, a row drive circuit, a column drive circuit and a controller, wherein the row drive circuit is composed of a plurality of row drive units, an input end of each row drive unit is connected with the controller, and an output end of each row drive unit is connected with anodes of all three-color diodes of a corresponding row of full-color light-emitting diodes in the display module. The column drive circuit is composed of three groups of constant current source chips which respectively control light-emitting diodes of three colors, input ends of the three groups of constant current source chips are connected with the controller, and each constant current output end of each constant current source chip is connected with cathodes of all identical-color light-emitting diodes of a column of full-color light-emitting diodes of the display module. The high-gray-scale high-refresh-rate full-color display screen can realize high refresh rates and gray scale grades, improves color expressive effect and comprehensive performance, and expands the application range.
Description
Technical field
The utility model relates to and a kind ofly has high gray scale, high refresh rate and the lower full-color LED display screen of clock frequency, belongs to the display technique field.
Background technology
Improve the luminance level that the number of greyscale levels of LED display can rich image, improve the color representation power of display screen.In order to prevent film flicker, when improving the number of greyscale levels of LED display, must improve refresh rate simultaneously, prior art can only improve refresh rate by improving clock frequency, but improving clock frequency can make the structure of controller IC become complicated, stability reduces, power consumption increases, and has so just limited the range of application of LED display.Therefore, how significantly improving the refresh rate and the number of greyscale levels of LED display under the prerequisite that does not improve clock frequency, is the present difficult problems that face of relevant technologies personnel.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the low high gray scale height of a kind of clock frequency to refresh full-colour display screen.
Problem described in the utility model realizes with following technical proposals:
A kind of high gray scale height refreshes full-colour display screen, form by colour light-emitting diode array demonstration module, horizontal drive circuit, column drive circuit and controller, described horizontal drive circuit is made up of a plurality of capable driver elements, the input termination controller of each row driver element, output termination show in the module positive pole of all three look diodes of corresponding delegation's colour light-emitting diode with it; Described column drive circuit is made up of three groups of constant current source chips controlling three kinds of color LEDs respectively, described constant current source chip adopts MBI5042, their input termination controller, all negative poles in the row colour light-emitting diode of each constant current output termination demonstration module of each constant current source chip with color LEDs.
Above-mentioned high gray scale height refreshes full-colour display screen, described capable driver element is made up of metal-oxide-semiconductor and three resistance, the source electrode of described metal-oxide-semiconductor connects positive source, grid and source electrode connect the signal output part of controller respectively through first resistance and second resistance, drain electrode connects the anodal of delegation's colour light-emitting diode and connects power cathode through the 3rd resistance.
Above-mentioned high gray scale height refreshes full-colour display screen, and described demonstration module is provided with a plurality of, and they are combined into rectangular display screen.
Above-mentioned high gray scale height refreshes full-colour display screen, and in the described capable driver element, the ratio of first resistance and the resistance of second resistance is 1/1000, the second resistance and the ratio of the resistance of the 3rd resistance is 1/20.
Above-mentioned high gray scale height refreshes full-colour display screen, and the rectangular substrate of described demonstration module adopts multilayer PCB circuit board, and its positive source and negative pole all adopt independently metal level.
The utility model adopts the constant current source chip drives colour light-emitting diode array of built-in S-PWM to show module, this constant current source chip not only has the pulse width modulation function of 16 GTG controls, and can be dispersed into several short ON time the time of conducting, thereby increased the turnover rate of vision, reduced the flicker of picture, reduced requirement the controller clock frequency.Horizontal drive circuit has very high response speed, can effectively avoid the generation of smear phenomenon.
The utility model can obtain higher refresh rate and number of greyscale levels under lower clock frequency, improved the color representation power and the combination property of LED display, has enlarged the range of application of display screen.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the electrical schematic diagram of an embodiment of the present utility model;
Fig. 2 is the electrical schematic diagram of row driver element.
Each label is among the figure: U1, controller, the constant current source chip of UR, driving emitting red light diode; The constant current source chip of UG, driving green emitting diode; The constant current source chip of UB, driving blue-light-emitting diode; Q1, metal-oxide-semiconductor; H0～H7, row driver element; LED, demonstration module; R1～R6, resistance; L0-0～L7-15, colour light-emitting pipe.
Embodiment
In order to improve gray scale and refresh rate, the utility model adopts the constant current source chip for driving MBI5042 of built-in S-PWM, this chip has the pulse width modulation function of 16 GTG controls, built-in 16 Bit Shift buffers, the input data-switching of serial can be become the GTG picture number of each output channel, and the current value that its 16 constant current output channels are exported do not influence by the output terminal load voltage, and consistent and constant output current can be provided.This chip can be dispersed into the time of conducting several short ON time, and then has increased the turnover rate of vision.When setting up the full-colour display screen of 16 GTGs, can reduce the flicker of picture by S-PWM, reduce requirement to the controller clock frequency, controller only needs the clock frequency of number megahertz just can realize 16 GTG pulse width modulation.Can adjust the brightness of LED by the image data of input.And, can make each output channel show the change color of 16 (65,536 GTGs).
The characteristics of this integrated circuit:
Constant current output valve scope: 2～45mA;
At 5.0 volts of operating voltage: 2～45mA;
Precise current output valve: the general difference value of interchannel: the general difference value of＜± 1.5% chip chamber:＜± 3.0%
Staggered time sluggishness between output channel can be avoided burst current;
Clock frequency is up to 30MHz;
Has the Schmidt trigger input media;
Operating voltage: 3.0～5.5 volts.
The size that high gray scale in the utility model, height refresh full-colour display screen shows that by the quantity decision that shows module LED the module LED front is provided with the three-in-one colour light-emitting pipe of surface-mount type of arranged, adopts attachment process, can increase work efficiency greatly.The spacing of each light emitting diode is 4mm～16mm.The negative pole of 16 row LED of the every same color of module and the corresponding connection of output terminal of a slice constant current source chip.The anodal of the LED of three kinds of colors of every row all is connected with the drain electrode of metal-oxide-semiconductor in the corresponding row driver element.
Referring to Fig. 1, sweep with 16*8 point 8 and to be example, each shows that module has 8 row, 16 row colour light-emitting pipes, 8 capable driver elements (H0～H7) need be set, three constant current source chips, each the corresponding delegation of row driver element colour light-emitting diode, its input termination controller U1, the positive pole of all three look diodes of output termination corresponding row colour light-emitting diode; The input termination controller U1 of three constant current source chips, the negative pole of all emitting red light diodes of one row colour light-emitting diode of each output termination demonstration module LED of the constant current source chip UR of driving emitting red light diode, the negative pole of all green emitting diodes of one row colour light-emitting diode of each output termination demonstration module of the constant current source chip UG of driving green emitting diode, the negative pole of all blue-light-emitting diodes of a row colour light-emitting diode of each output termination demonstration module LED of the constant current source chip UB of driving blue-light-emitting diode.
Referring to Fig. 2, this display screen adopts the type of drive of lining by line scan, for fear of the smear of display screen and the properties of product of raising metal-oxide-semiconductor, the resistance R 3 of connecting between the resistance R 2, drain electrode of between the grid of metal-oxide-semiconductor and controller U1, connecting between resistance in series R1, source electrode and grid and ground wire, and R1/R2=1/1000 is arranged, R2/R3 ≌ 1/20.
This display screen adopts multilayer PCB circuit board, has increased independently power supply and ground wire, has reduced electromagnetic interference (EMI) and radiation effectively, can increase the area of dissipation of light emitting diode simultaneously.Adopt special-purpose banded flat cable to connect between the adjacent demonstration module of display screen, reduce electromagnetic interference (EMI) and radiation, also make screen body inside more attractive in appearance simultaneously.
Claims (5)
1. one kind high gray scale height refreshes full-colour display screen, it is characterized in that, described display screen is made up of colour light-emitting diode array demonstration module (LED), horizontal drive circuit, column drive circuit and controller (U1), described horizontal drive circuit is made up of a plurality of capable driver elements, the input termination controller (U1) of each row driver element, output termination show in the module positive pole of all three look diodes of corresponding delegation's colour light-emitting diode with it; Described column drive circuit is made up of three groups of constant current source chips controlling three kinds of color LEDs respectively, described constant current source chip adopts MBI5042, their input termination controller (U1), all negative poles in the row colour light-emitting diode of each constant current output termination demonstration module (LED) of each constant current source chip with color LEDs.
2. refresh full-colour display screen according to the described high gray scale height of claim 1, it is characterized in that, described capable driver element is made up of metal-oxide-semiconductor (Q1) and three resistance, the source electrode of described metal-oxide-semiconductor (Q1) connects positive source, grid and source electrode connect the signal output part of controller (U1) respectively through first resistance (R1) and second resistance (R2), drain electrode connects the anodal of delegation's colour light-emitting diode and connects power cathode through the 3rd resistance (R3).
3. refresh full-colour display screen according to claim 1 or 2 described high gray scale height, it is characterized in that described demonstration module (LED) is provided with a plurality of, they are combined into rectangular display screen.
4. refresh full-colour display screen according to the described high gray scale height of claim 3, it is characterized in that, in the described capable driver element, the ratio of the resistance of first resistance (R1) and second resistance (R2) is that the ratio of the resistance of 1/1000, the second resistance (R2) and the 3rd resistance (R3) is 1/20.
5. refresh full-colour display screen according to the described high gray scale height of claim 4, it is characterized in that, the rectangular substrate of described demonstration module (LED) adopts multilayer PCB circuit board, and its positive source and negative pole all adopt independently metal level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201310134U CN202033976U (en) | 2011-04-28 | 2011-04-28 | High-gray-scale high-refresh-rate full-color display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201310134U CN202033976U (en) | 2011-04-28 | 2011-04-28 | High-gray-scale high-refresh-rate full-color display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033976U true CN202033976U (en) | 2011-11-09 |
Family
ID=44896265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201310134U Expired - Fee Related CN202033976U (en) | 2011-04-28 | 2011-04-28 | High-gray-scale high-refresh-rate full-color display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033976U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082431A1 (en) * | 2012-11-29 | 2014-06-05 | 利亚德光电股份有限公司 | Led display device and led control system |
| CN103854596A (en) * | 2012-11-29 | 2014-06-11 | 利亚德光电股份有限公司 | Led display |
| CN103854598A (en) * | 2012-11-29 | 2014-06-11 | 利亚德光电股份有限公司 | Led display |
| CN103996676A (en) * | 2014-06-05 | 2014-08-20 | 广东威创视讯科技股份有限公司 | LED packaging structure |
| CN103996378A (en) * | 2014-06-05 | 2014-08-20 | 广东威创视讯科技股份有限公司 | LED packaging structure |
| CN106652888A (en) * | 2016-11-28 | 2017-05-10 | 深圳市富满电子集团股份有限公司 | LED display screen and scanning control circuit thereof |
| CN106683622A (en) * | 2016-12-31 | 2017-05-17 | 深圳Tcl数字技术有限公司 | LOCAL DIMMING backlight drive circuit and electronic device |
| CN111063300A (en) * | 2019-05-01 | 2020-04-24 | 友达光电股份有限公司 | Display module, display device and driving method thereof |
| CN117293237A (en) * | 2023-11-27 | 2023-12-26 | 深圳蓝普视讯科技有限公司 | Chip forward and backward arrangement array method and system for light-emitting diode display screen |
-
2011
- 2011-04-28 CN CN2011201310134U patent/CN202033976U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854596A (en) * | 2012-11-29 | 2014-06-11 | 利亚德光电股份有限公司 | Led display |
| CN103854597A (en) * | 2012-11-29 | 2014-06-11 | 利亚德光电股份有限公司 | LED display and LED control system |
| CN103854598A (en) * | 2012-11-29 | 2014-06-11 | 利亚德光电股份有限公司 | Led display |
| CN103854597B (en) * | 2012-11-29 | 2016-08-10 | 利亚德光电股份有限公司 | Light-emitting diode display and LED control system |
| CN103854598B (en) * | 2012-11-29 | 2016-08-10 | 利亚德光电股份有限公司 | Light-emitting diode display |
| WO2014082431A1 (en) * | 2012-11-29 | 2014-06-05 | 利亚德光电股份有限公司 | Led display device and led control system |
| CN103996676B (en) * | 2014-06-05 | 2018-02-13 | 广东威创视讯科技股份有限公司 | A kind of LED encapsulation structure |
| CN103996676A (en) * | 2014-06-05 | 2014-08-20 | 广东威创视讯科技股份有限公司 | LED packaging structure |
| CN103996378A (en) * | 2014-06-05 | 2014-08-20 | 广东威创视讯科技股份有限公司 | LED packaging structure |
| CN106652888A (en) * | 2016-11-28 | 2017-05-10 | 深圳市富满电子集团股份有限公司 | LED display screen and scanning control circuit thereof |
| CN106683622A (en) * | 2016-12-31 | 2017-05-17 | 深圳Tcl数字技术有限公司 | LOCAL DIMMING backlight drive circuit and electronic device |
| WO2018121126A1 (en) * | 2016-12-31 | 2018-07-05 | 深圳Tcl数字技术有限公司 | Local dimming backlight driver circuit and electronic device |
| CN106683622B (en) * | 2016-12-31 | 2019-12-03 | 深圳Tcl数字技术有限公司 | LOCAL DIMMING backlight drive circuit and electronic equipment |
| CN111063300A (en) * | 2019-05-01 | 2020-04-24 | 友达光电股份有限公司 | Display module, display device and driving method thereof |
| US11170710B2 (en) | 2019-05-01 | 2021-11-09 | Au Optronics Corporation | Display module with high resolution grayscale, display device, and driving method thereof |
| CN117293237A (en) * | 2023-11-27 | 2023-12-26 | 深圳蓝普视讯科技有限公司 | Chip forward and backward arrangement array method and system for light-emitting diode display screen |
| CN117293237B (en) * | 2023-11-27 | 2024-03-19 | 深圳蓝普视讯科技有限公司 | Chip forward and backward arrangement array method and system for light-emitting diode display screen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202033976U (en) | High-gray-scale high-refresh-rate full-color display screen | |
| CN105989794B (en) | OLED display | |
| CN101868818B (en) | Backlight device and liquid crystal display device using the same | |
| CN203520832U (en) | LED display screen and LED display modules thereof | |
| CN101246669B (en) | Scanning type LED display unit and method | |
| CN201057388Y (en) | Linear LED screen | |
| CN202795924U (en) | High-integration light-emitting diode (LED) display screen based on chip on board (COB) packaging technology | |
| CN101527115A (en) | LED display unit | |
| CN102006696B (en) | Light-emitting diode backlight drive circuit, method and constant current source thereof | |
| CN101707031B (en) | LED TV display panel device | |
| CN201557284U (en) | LED constant flow driving circuit device | |
| CN202677744U (en) | Novel outdoor full color display screen | |
| KR101046114B1 (en) | Low Power Driven LED Display Board | |
| CN209014874U (en) | Driving circuit, dot structure and the display panel of display panel | |
| CN214381497U (en) | Digital LED module capable of being randomly connected in series and parallel | |
| CN208111042U (en) | LED display | |
| CN103617788B (en) | Control the circuit of LCD display pattern colour temperature 6500K round the clock | |
| CN113363246A (en) | Small-interval common-cathode energy-saving soft module of four-in-one lamp | |
| CN203760051U (en) | Line-scanning constant-current drive control chip for LED (light emitting diode) high-density display screen | |
| CN201563193U (en) | Display panel device of LED television | |
| CN217485073U (en) | Display screen | |
| CN202042160U (en) | Novel energy-saving LED (light-emitting diode) display screen | |
| CN201698712U (en) | Scanning device of LED panel television display panel | |
| CN201218479Y (en) | LED image element lamp | |
| CN201655199U (en) | Led display screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20190428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |