CN105913814B - A kind of display screen - Google Patents
A kind of display screen Download PDFInfo
- Publication number
- CN105913814B CN105913814B CN201610211163.3A CN201610211163A CN105913814B CN 105913814 B CN105913814 B CN 105913814B CN 201610211163 A CN201610211163 A CN 201610211163A CN 105913814 B CN105913814 B CN 105913814B
- Authority
- CN
- China
- Prior art keywords
- display screen
- iovcc
- power supply
- notch filter
- supply chip
- 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.)
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Classifications
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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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
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
Abstract
The embodiment of the invention discloses a kind of display screen, IOVCC power supply chip is provided on the display screen, which is characterized in that it is additionally provided with one end on the display screen and is connect with the line outlet of the IOVCC power supply chip, the notch filter of one end ground connection.Using the present invention, interference of the display screen to terminal call performance can be reduced.
Description
Technical field
The present invention relates to field of computer technology more particularly to a kind of display screens.
Background technique
With the development of computer technology, the design of the mobile communication terminals such as smart phone becomes increasingly complex, a function
Module is more and more (such as display screen, camera, sensor, key), and each module is also more next to the interference of Terminal communication system
More, display screen is exactly wherein one of interference source the most apparent.
The display screen of many mobile terminals is all LCD display (Liquid Crystal Display, liquid in the prior art
Crystal display screen), MIPI (Mobile Industry Processor Interface, the mobile Industry Processor of liquid crystal display
Interface) when transmitting digital signal, generating MIPI point, the OSC of interference and 46MHz are interfered signal wire frequently and multiple frequence interferes.
In general, for above-mentioned terminal during being conversed, received band limits is GSM850 and GSM900 frequency range (800-
1000MHz), the frequency of above-mentioned display screen generates OSC and multiple frequence interference (19 frequencys multiplication and 20 frequencys multiplication) can fall in call institute
Within GSM850 the and GSM900 band limits (800-1000MHz) needed, that is to say, that can be formed to the call performance of terminal
Interference.
Summary of the invention
Based on this, there is the excessive skill of the interference to the call performance of terminal in the liquid crystal display to solve in traditional technology
Art problem, spy propose a kind of display screen.
A kind of display screen is provided with IOVCC power supply chip on the display screen, which is characterized in that on the display screen also
It is provided with one end to connect with the line outlet of the IOVCC power supply chip, the notch filter of one end ground connection.
Optionally, in one embodiment, the notch filter be with the ground capacity of the IOVCC power supply chip simultaneously
The adjusting capacitor of connection.
Optionally, in one embodiment, the capacitance for adjusting capacitor is 50-200pf.
Optionally, in one embodiment, the 800MHz-1000MHz for adjusting capacitor and IOVCC power supply chip being issued
Electromagnetic wave be filtered.
Optionally, in one embodiment, the notch filter is at a distance from the line outlet of the IOVCC power supply chip
Less than 5mm.
Implement the embodiment of the present invention, will have the following beneficial effects:
After above-mentioned display screen, the notch filter connecting with IOVCC power supply chip can be interfered as OSC
Electromagnetic signal caused by IOVCC power supply line at the display screen flat cable bending in source plays attenuation, so that OSC radiation field
It is substantially reduced by force, the OSC convex closure in frequency range (800-1000MHz) range is received to wideband GSM850, GSM900 of mobile call
Interference is played the role of inhibiting reduction, and display screen interference caused by radio frequency is effectively reduced, improves speech quality, improves use
Family experience.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Wherein:
Fig. 1 is a kind of electrical block diagram of notch filter in one embodiment；
Fig. 2 is a kind of IOVCC electrical block diagram of LCD display in one embodiment；
Fig. 3 is the radiation field intensity schematic diagram in one embodiment using the terminal of aforementioned display screen in the operating condition.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
There is the excessive technical problem of the interference to the call performance of terminal in the liquid crystal display to solve in traditional technology,
In the present embodiment, spy proposes a kind of display screen.Above-mentioned display screen is liquid crystal display (LCD display), and the display screen
For can be carried out call mobile communication equipment display screen.
Specifically, IOVCC power supply chip and notch filter are provided on above-mentioned display screen, specifically, notch filter
One end of device is connect with the line outlet of IOVCC power supply chip, other end ground connection.IOVCC power supply chip is used to provide to display screen
Power supply, and IOVCC power supply chip is the source of the OSC interference of display screen, that is to say, that in IOVCC power supply chip in work
The radiation field generated in the process can have an impact the other component of terminal.
Notch filter (notch filter) can decay rapidly input signal in some Frequency point, to reach resistance
The filter effect for hindering this frequency signal to pass through；Because notch filter is a kind of bandstop filter, and stopband is very narrow.At this
In embodiment, believed using notch filter for wideband GSM850, GSM900 frequency for receiving frequency range (800-1000MHz) range
It number is filtered, to play the role of inhibition, elimination to the interference on said frequencies point.
Preferably, in one embodiment, notch filter is the adjusting in parallel with the ground capacity of IOVCC power supply chip
Capacitor.
As shown in Figure 1, Fig. 1 gives a kind of electrical block diagram of notch filter.Specifically, capacitor C12's
Both ends, parallel connection have accessed capacitor C14, which is to adjust capacitor.The adjusting of the capacitance of adjusting capacitor, realization pair can be passed through
The frequency of the electromagnetic wave of notch filter filtering is adjusted, and realization carried out the electromagnetic wave of the interference band of different frequency
Filter.
Preferably, in one embodiment, the capacitance for adjusting capacitor is 50-200pf.
Preferably, in one embodiment, the electricity for the 800MHz-1000MHz that capacitor issues IOVCC power supply chip is adjusted
Magnetic wave is filtered.The frequency range for the electromagnetic wave that notch filter can be filtered is according to filter itself and adjusting electricity
The capacitance of appearance will mainly carry out the interference electromagnetic wave to mobile communications network that display screen generates in the present embodiment
Filtering, that is to say, that need to be filtered the electromagnetic wave that frequency is 800MHz-1000MHz.In the present embodiment, it is adjusting
The capacitance of capacitor be 50-200pf when can the interference electromagnetic wave to 800MHz-1000MHz be filtered so that display screen
The convex closure noise of generation is inhibited, and display screen interference caused by radio frequency is effectively reduced, and improves speech quality.
Preferably, in one embodiment, notch filter is less than 5mm at a distance from the line outlet of IOVCC power supply chip.
Implement the embodiment of the present invention, will have the following beneficial effects:
After above-mentioned display screen, the notch filter connecting with IOVCC power supply chip can be interfered as OSC
Electromagnetic signal caused by IOVCC power supply line at the display screen flat cable bending in source plays attenuation, so that OSC radiation field
It is substantially reduced by force, the OSC convex closure in frequency range (800-1000MHz) range is received to wideband GSM850, GSM900 of mobile call
Interference is played the role of inhibiting reduction, and display screen interference caused by radio frequency is effectively reduced, improves speech quality, improves use
Family experience.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (5)
1. a kind of display screen, IOVCC power supply chip is provided on the display screen, which is characterized in that also set on the display screen
It is equipped with one end to connect with the line outlet of the IOVCC power supply chip, the notch filter of one end ground connection, wherein the IOVCC electricity
Source chip is used to provide power supply for display screen, and the notch filter is used to decay at the flat cable bending of the display screen
IOVCC power supply line is as electromagnetic signal caused by OSC interference source, and the notch filter is used for in electromagnetic signal
Frequency point is that the frequency signal of 800-1000MHz range in wideband GSM850, GSM900 reception frequency range is filtered, to described
AF panel and elimination on Frequency point.
2. display screen according to claim 1, which is characterized in that the notch filter be and the IOVCC power supply core
The adjusting capacitor of the ground capacity parallel connection of piece.
3. display screen according to claim 2, which is characterized in that the capacitance for adjusting capacitor is 50-200pf.
4. display screen according to claim 2 or 3, which is characterized in that the adjusting capacitor issues IOVCC power supply chip
The electromagnetic wave of 800MHz-1000MHz be filtered.
5. display screen according to claim 1, which is characterized in that the notch filter and the IOVCC power supply chip
Line outlet distance be less than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610211163.3A CN105913814B (en) | 2016-04-05 | 2016-04-05 | A kind of display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610211163.3A CN105913814B (en) | 2016-04-05 | 2016-04-05 | A kind of display screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105913814A CN105913814A (en) | 2016-08-31 |
| CN105913814B true CN105913814B (en) | 2019-04-26 |
Family
ID=56744746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610211163.3A Active CN105913814B (en) | 2016-04-05 | 2016-04-05 | A kind of display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105913814B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818684B (en) * | 2019-01-25 | 2020-10-27 | 维沃移动通信有限公司 | Signal processing system and terminal device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101110601A (en) * | 2007-07-03 | 2008-01-23 | 华为技术有限公司 | Signal connecting device |
| US8803615B2 (en) * | 2012-01-23 | 2014-08-12 | Qualcomm Incorporated | Impedance matching circuit with tunable notch filters for power amplifier |
| CN104994204B (en) * | 2015-07-22 | 2017-11-07 | 广东欧珀移动通信有限公司 | Reduce the method and system of terminal display screen interference |
-
2016
- 2016-04-05 CN CN201610211163.3A patent/CN105913814B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105913814A (en) | 2016-08-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |