CN203225080U - A display circuit used for an instrument display panel - Google Patents
A display circuit used for an instrument display panel Download PDFInfo
- Publication number
- CN203225080U CN203225080U CN 201320128294 CN201320128294U CN203225080U CN 203225080 U CN203225080 U CN 203225080U CN 201320128294 CN201320128294 CN 201320128294 CN 201320128294 U CN201320128294 U CN 201320128294U CN 203225080 U CN203225080 U CN 203225080U
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- CN
- China
- Prior art keywords
- display circuit
- display panel
- nixie tube
- charactron
- utility
- 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 - Lifetime
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Abstract
The utility model discloses a display circuit used for an instrument display panel. The display circuit comprises a nixie tube, a receiving clock, a shifting register of data signal input, and a nixie tube power control circuit. The display circuit is characterized in that the nixie tube is equipped with an electronic switch used for controlling the on-off state of a power supply of the nixie tube. The display circuit analyzes a reason why flicker appears when 74HC164 chips are connected in series to be used and gives a solution. Actual use testifies that required effects can be completely achieved and that a phenomenon of flicker does not appear any longer.
Description
Technical field
The utility model relates to a kind of display circuit for the instrument display panel.
Background technology
The display panel of many digital instruments need be used the LED charactron and show numerical value, generally speaking, charactron can be selected static the demonstration and dynamically demonstration, if charactron is more, so dynamically showing needs more control chip IO mouth, and static demonstration can use the shift register that seals in and go out to drive, and only needs a data lines and a clock line to get final product, and saves chip I mouth resource.
When selecting the 74HC164 shift register, the use that generally a plurality of 74HC164 is together in series, still, because the 74HC164 function of depositing not with lock, so when a lot (such as 16 a) 74HC164 is together in series use, can find the LED flicker, i.e. so-called " ghost " phenomenon.
The utility model content
The purpose of this utility model is exactly in order to address the above problem, and a kind of display circuit for the instrument display panel is provided.
To achieve these goals, the utility model adopts following technical scheme:
A kind of display circuit for the instrument display panel, it comprises: shift register, the charactron power control circuit of charactron, receive clock and data-signal input is characterized in that described charactron is provided with in order to control the electronic switch of its on/off.
Described electronic switch is triode.
The beneficial effects of the utility model are: the utility model is analyzed the 74HC164 series connection and is used the reason that " ghost " can occur, and this is proposed a solution, and the actual proof of using can reach needed effect fully, can not occur " ghost " phenomenon again.
Description of drawings
Fig. 1 is a kind of module relation diagram of the display circuit for the instrument display panel.
Fig. 2 is general display circuit schematic diagram.
Fig. 3 is a kind of display circuit schematic diagram for the instrument display panel.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Shown in Fig. 1～3, a kind of display circuit for the instrument display panel, it comprises: shift register 2, the charactron power control circuit 3 of charactron (digital display tube) 1, receive clock and data-signal input, described charactron is provided with in order to control the electronic switch of its on/off.16 digital display tubes are with 16 74HC164(U1～U16) shift register links to each other.
For this case, described electronic switch is triode, such as 8550 type triodes, 16 8550 type triodes (Q1～Q16) has been shown among Fig. 3.
It is the 74HC164 function of depositing not with lock that a plurality of 74HC164 shift register concatenation are used the reason that " ghost " can occur, so the state of register port in the shifting process has all been shown, and correct way is the state of register port to be shown later at end-of-shift again.Utilize the switching function of triode, in the process of displacement, close the charactron power supply, the state of register port just can not show in the shifting process like this, open the power supply of charactron later on again at end-of-shift, what show this time is exactly correct numeral, as long as controlling the frequency that refreshes of displacement and required time of displacement well, just still can utilize the visual persistence effect of human eye to reach the effect of normal demonstration.
Referring to Fig. 3, wherein ENABLE is the port of control charactron on/off, input high level in displacement, input low level when showing.
The above only is preferred implementation of the present utility model, and protection domain of the present utility model is not limited in above-mentioned embodiment, and every technical scheme that belongs to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, some improvement of under the prerequisite that does not break away from principle of the present utility model, carrying out, these improvement also should be considered as protection domain of the present utility model.
Claims (2)
1. display circuit that is used for the instrument display panel, it comprises: shift register, the charactron power control circuit of charactron, receive clock and data-signal input is characterized in that described charactron is provided with in order to control the electronic switch of its on/off.
2. a kind of display circuit for the instrument display panel as claimed in claim 1 is characterized in that, described electronic switch is triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128294 CN203225080U (en) | 2013-03-20 | 2013-03-20 | A display circuit used for an instrument display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128294 CN203225080U (en) | 2013-03-20 | 2013-03-20 | A display circuit used for an instrument display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225080U true CN203225080U (en) | 2013-10-02 |
Family
ID=49252077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320128294 Expired - Lifetime CN203225080U (en) | 2013-03-20 | 2013-03-20 | A display circuit used for an instrument display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225080U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405378A (en) * | 2015-12-03 | 2016-03-16 | 浙江宇视科技有限公司 | Nixie tube driving device and display equipment |
| CN109374938A (en) * | 2018-11-09 | 2019-02-22 | 北京航天万源科技有限公司 | A kind of digital display device |
-
2013
- 2013-03-20 CN CN 201320128294 patent/CN203225080U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405378A (en) * | 2015-12-03 | 2016-03-16 | 浙江宇视科技有限公司 | Nixie tube driving device and display equipment |
| CN105405378B (en) * | 2015-12-03 | 2018-08-31 | 浙江宇视科技有限公司 | Digital tube drive device and display equipment |
| CN109374938A (en) * | 2018-11-09 | 2019-02-22 | 北京航天万源科技有限公司 | A kind of digital display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A display circuit for instrument display panel Effective date of registration: 20211203 Granted publication date: 20131002 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2021980014045 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220322 Granted publication date: 20131002 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2021980014045 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A display circuit for instrument display panel Effective date of registration: 20220322 Granted publication date: 20131002 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2022990000159 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221220 Granted publication date: 20131002 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2022990000159 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131002 |
|
| CX01 | Expiry of patent term |