CN202049689U - LED digital display screen and display panel of household electrical appliance - Google Patents
LED digital display screen and display panel of household electrical appliance Download PDFInfo
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- CN202049689U CN202049689U CN2011201225042U CN201120122504U CN202049689U CN 202049689 U CN202049689 U CN 202049689U CN 2011201225042 U CN2011201225042 U CN 2011201225042U CN 201120122504 U CN201120122504 U CN 201120122504U CN 202049689 U CN202049689 U CN 202049689U
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Abstract
The utility model is applied to the field of digital display and provides an LED digital display screen and a display panel of a household electrical appliance. The LED digital display screen comprises a PCB and a plurality of LED chips arranged on the right side of the PCB. In the light emitting direction of each LED chip, a display window is disposed. An LED driving circuit is integrated on the PCB. Driving chips are disposed on the back side of the PCB. The LED chips are electrically connected with the driving chips via an LED driving circuit. According to the utility model, the driving circuit is designed on the PCB directly and the driving chips are bound on the PCB so as to directly control the digital tube display. Therefore, a design of a peripheral circuit is greatly simplified, the area of the peripheral circuit is reduced, and the cost is lowered. Meanwhile, the driving chips are arranged inside the display screen so as not to be affected by the external environment, such that the stability of a control circuit is improved to a certain degree and the display screen is more convenient for maintenance. The LED digital display screen can be widely used for digital display control panels of various household electrical appliances.
Description
Technical field
The utility model belongs to digital demonstration field, relates in particular to the display panel of a kind of LED digital display screen and household electrical appliance.
Background technology
The LED digital display screen is arranged on the various household electrical appliance more, comes display digit by charactron, and this display screen mainly comprises luminous chip for driving and the driver circuit of pcb board, driving LED of light emitting source LED, carrying LED.Pcb board, the LED of traditional LED digital display screen and play protection and material of main part (the mostly being epoxy resin) three of supporting role constitutes the demonstration main body of display screen; chip for driving then is arranged at the outside that shows main body; from showing that some circuits that main body is drawn then externally are electrically connected with chip for driving; the line construction more complicated of this external drive; area occupied is bigger; be unfavorable for the microminiaturization of display screen, manufacturing cost is also higher.And chip for driving places the outside less stable that also causes the The whole control circuit, is subjected to external interference easily, and then causes the unstable working condition of charactron.
The utility model content
The purpose of this utility model is to provide a kind of LED digital display screen, is intended to solve the big problem of operation circuit complexity, area occupied of existing LED digital display screen.-
The utility model is achieved in that a kind of LED digital display screen, comprise pcb board and the positive a plurality of led chips that are loaded with thereof, the light direction of each led chip is equipped with display window, be integrated with led drive circuit in the described pcb board, the back side of described pcb board is provided with chip for driving, and described led chip is electrically connected with described chip for driving by led drive circuit.
As optimal technical scheme of the present utility model:
Described display screen also comprises supportive body, and described pcb board, led chip and chip for driving place among the described supportive body;
The upper surface coated with protective film paper of described supportive body;
The side of described supportive body is provided with end cap.
Separate between each display window.
Be provided with interlayer between the adjacent display window.
Described display window is the part of described supportive body between adjacent spacers.
Described display window and led chip are provided with one to one.
The back side of described pcb board is provided with reference column.
The outside surface of described led chip is coated with the protection glue-line.
Another purpose of the present utility model is to provide a kind of display panel of household electrical appliance, and described display panel comprises master controller and above-mentioned LED digital display screen, and the chip for driving of described LED digital display screen is electrically connected with described master controller.
The utility model is design driven circuit on pcb board directly, and nation decides chip for driving again, directly controls charactron by chip for driving and shows.Because charactron has directly made up chip for driving, can simplify the design of periphery circuit significantly, reduces the area of periphery circuit, and has reduced cost; Simultaneously,, make its influence that can not be subjected to external environment, also improved the stability of operation circuit to a certain extent, and then made more easy care of display screen because chip for driving is arranged on the inside of display screen.This LED digital display screen can be widely used on the digital display control board of all kinds of household electrical appliance.
Description of drawings
Fig. 1 is the cross-sectional view of the LED digital display screen that provides of the utility model first embodiment;
Fig. 2-a is the driver circuit synoptic diagram of the LED digital display screen that provides of the utility model first embodiment;
Fig. 2-b is the pattern synoptic diagram of the LED digital display screen that provides of the utility model first embodiment;
Fig. 2-c is the circuit connection diagram of the led chip that provides of the utility model first embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model is design driven circuit on pcb board directly, and nation decides chip for driving again, to simplify the design of periphery circuit, reduces the area of periphery circuit, reduces cost.
The utility model provides a kind of LED digital display screen, comprise pcb board and the positive a plurality of led chips that are loaded with thereof, the light direction of each led chip is equipped with display window, be integrated with led drive circuit in the pcb board, the back side of pcb board is provided with chip for driving, and led chip is electrically connected with chip for driving by driving circuit.
The utility model also provides a kind of display panel of household electrical appliance, comprises master controller and above-mentioned LED digital display screen, and the chip for driving of LED digital display screen is electrically connected with master controller.
Be described in detail below in conjunction with the specific implementation of specific embodiment the display panel of a kind of household electrical appliance of the utility model:
Embodiment one:
Fig. 1 shows the cross-sectional view of the LED digital display screen that the utility model first embodiment provides, Fig. 2-a to 2-c shows the control principle synoptic diagram of the LED digital display screen that the utility model first embodiment provides, for convenience of explanation, only show the part relevant with present embodiment.
This LED digital display screen comprises the supportive body 11 that is made of transparent material (can be epoxy resin), and the surface of supportive body 11 can coated with protective film paper 12, and the side of supportive body is provided with end cap 13, and the inwall of this end cap 13 has the effect of reflection ray usually.Be provided with pcb board 14 in this supportive body 11, the front of pcb board 14 is loaded with a plurality of led chips 15, and the outside of each led chip all is provided with display window 16, and the light that led chip 15 sends is gone out by display window 16 transmissions.Parts such as above-mentioned led chip 15, pcb board 14 and supportive body 11 constitute the demonstration main body of display screen, the main function that realizes digital demonstration.The display pattern of charactron is then controlled by driver circuit and peripheral circuit.Too complicated for fear of the circuit of this display screen, present embodiment is provided with driver circuit on pcb board 14, and in the back side of pcb board 14 binding chip for driving 17, and led chip 15 and chip for driving 17 are electrically connected by driver circuit.So most of circuit all is integrated on the pcb board 14, and the circuit that leads to demonstration main body outside from pcb board is then fewer.
Chip for driving 17 and pcb board 14 are combined, realized the integrated of light source led, pcb board and driver circuit, chip for driving 17 directly is arranged on the pcb board 14, driver circuit can be guided to the outside that shows main body, so just significantly simplified the design of periphery circuit, the area of periphery circuit has reduced, and helps the microminiaturization of entire display screen; Also reduced simultaneously design cost; And, because chip for driving is hidden in supportive body inside, do not contact with the external world, just can not be subjected to the interference of external environment, also improved the stability of operation circuit to a certain extent, and then made the duty of charactron more stable.
In the present embodiment, the back side of pcb board 14 can also be provided with several reference columns 141, is used for pcb board 14 is fixed in the supportive body 11.
In the present embodiment, the outside of chip for driving 17 can seal layer of silica gel 18 is set, and makes chip and external agency isolated, so that chip is protected.
This LED digital display screen can be widely used on the digital display control board of all kinds of household electrical appliance, and its duty is controlled by the master controller of display control board, and the control principle of this LED digital display screen is as follows:
As Fig. 2-a, master control board (MCU) 21 output datas are given chip for driving 17, and the Grid of chip for driving 17, Seg pin are controlled the word of charactron and the bright dark state of section respectively, and wherein, Grid is a negative pole, and Seg is anodal.If charactron is common cathode (negative pole altogether) property, Grid control word, Seg control section; If charactron is anode (anodal altogether) property altogether, Seg control word then, Grid control section.As Fig. 2-b, 2-c, with common cathode group of four figures pipe is example, the negative pole of then forming the section A～G correspondence of a word all connects together and draws with a PIN, negative electrode as this word of control, this charactron is totally 4 negative electrodes, connect together the positive pole of the same section correspondence of all words as positive pole and draw with a PIN, this charactron is totally 7 anodes.Grid1～4 connect the negative electrode of first to fourth word of charactron respectively, the anode of the A of each word, B, C, D, E, F, G section connects Seg1～7 respectively, if need first word to be shown as " 3 ", the master control board output data, the Grid1 output low level of chip for driving, Seg1, Seg2, Seg3, Seg4, Seg7 export the section that positive voltage is lighted required demonstration respectively.
In the described chip for driving 17 of present embodiment, oscillator pin OSC is used to connect a drop-down resistance and determines oscillation frequency.Data I/O pin DI/O is at the rising edge clock input serial data, from low level; In clock negative edge output serial data, from low level; Be output as N-ch open drain.Clock input pin CLK reads serial data at rising edge, the negative edge output data.Chip select pin STB is rising or negative edge initialization string line interface, waits for subsequently receiving instruction; STB for first byte after low as instruction, when processing instruction, current other processing is terminated; As STB when being high, CLK is left in the basket.Key1～Key2 be the key total number according to input pin, the data of importing this pin are latched after the display cycle finishes.Logic power VDD output voltage 5V ± 10%.GND welding system ground logically.Seg1～Seg14 pin the section of being used for output (also as key scanning); Grid1～Grid4 pin is used for position output.
Embodiment two:
In the present embodiment, in order to make the charactron display effect clear, display window 16 preferably is provided with one to one with led chip 15, and interlayer 19 is set between adjacent display window 16, causes the charactron demonstration unintelligible in order to avoid the light that adjacent LED chip 14 sends intersects.
Further with reference to the accompanying drawings 1, a plurality of interlayers 19 can adopt identical materials with end cap 13, and the part of supportive body 11 between two interlayers 19 just constitutes display window 16.
Certainly, display window 16 also can be provided with separately, promptly adopts the material display window different with supportive body 11.
The utility model is design driven circuit on pcb board directly, and nation decides chip for driving again, directly controls charactron by chip for driving and shows.Because charactron has directly made up chip for driving, can simplify the design of periphery circuit significantly, reduces the area of periphery circuit, and has reduced cost; Simultaneously,, make its influence that can not be subjected to external environment, also improved the stability of operation circuit to a certain extent, and then made more easy care of display screen because chip for driving is arranged on the inside of display screen.This LED digital display screen can be widely used on the digital display control board of all kinds of household electrical appliance.Display window and led chip are provided with one to one, and between adjacent display window interlayer are set, and can make the charactron display effect clear.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. LED digital display screen, comprise pcb board and the positive a plurality of led chips that are loaded with thereof, the light direction of each led chip is equipped with display window, it is characterized in that, be integrated with led drive circuit in the described pcb board, the back side of described pcb board is provided with chip for driving, and described led chip is electrically connected with described chip for driving by led drive circuit.
2. display screen as claimed in claim 1 is characterized in that described display screen also comprises supportive body, and described pcb board, led chip and chip for driving place among the described supportive body;
The upper surface coated with protective film paper of described supportive body;
The side of described supportive body is provided with end cap.
3. display screen as claimed in claim 2 is characterized in that, and is separate between each display window.
4. display screen as claimed in claim 3 is characterized in that, is provided with interlayer between the adjacent display window.
5. display screen as claimed in claim 4 is characterized in that, described display window is the part of described supportive body between adjacent spacers.
6. as each described display screen of claim 1 to 5, it is characterized in that described display window and led chip are provided with one to one.
7. as each described display screen of claim 1 to 5, it is characterized in that the back side of described pcb board is provided with reference column.
8. as each described display screen of claim 1 to 5, it is characterized in that the outside surface of described led chip is coated with the protection glue-line.
9. the display panel of household electrical appliance is characterized in that, described display panel comprises master controller and each described LED digital display screen of claim 1 to 8, and the chip for driving of described LED digital display screen is electrically connected with described master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201225042U CN202049689U (en) | 2011-04-22 | 2011-04-22 | LED digital display screen and display panel of household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201225042U CN202049689U (en) | 2011-04-22 | 2011-04-22 | LED digital display screen and display panel of household electrical appliance |
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| Publication Number | Publication Date |
|---|---|
| CN202049689U true CN202049689U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201225042U Expired - Fee Related CN202049689U (en) | 2011-04-22 | 2011-04-22 | LED digital display screen and display panel of household electrical appliance |
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| CN (1) | CN202049689U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496344A (en) * | 2011-12-05 | 2012-06-13 | 厦门厦荣达电子有限公司 | Novel light emitting diode (LED) numeral tube and production method thereof |
| CN109509426A (en) * | 2019-01-07 | 2019-03-22 | 山西高科华瑞电子科技有限公司 | The LED display of more mouthfuls of output receives card |
| CN112261780A (en) * | 2020-09-30 | 2021-01-22 | 江苏金黄光智慧照明研究院有限公司 | Novel main control chip and digital display screen with same |
| CN112968019A (en) * | 2020-12-23 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | Substrate, display unit, display module, manufacturing method of display module and display screen |
-
2011
- 2011-04-22 CN CN2011201225042U patent/CN202049689U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496344A (en) * | 2011-12-05 | 2012-06-13 | 厦门厦荣达电子有限公司 | Novel light emitting diode (LED) numeral tube and production method thereof |
| CN109509426A (en) * | 2019-01-07 | 2019-03-22 | 山西高科华瑞电子科技有限公司 | The LED display of more mouthfuls of output receives card |
| CN112261780A (en) * | 2020-09-30 | 2021-01-22 | 江苏金黄光智慧照明研究院有限公司 | Novel main control chip and digital display screen with same |
| CN112968019A (en) * | 2020-12-23 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | Substrate, display unit, display module, manufacturing method of display module and display screen |
| CN112968019B (en) * | 2020-12-23 | 2023-08-29 | 重庆康佳光电科技有限公司 | Substrate, display unit, display module, manufacturing method of display module and display screen |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20180422 |