CN105913814A - a display screen - Google Patents
a display screen Download PDFInfo
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- CN105913814A CN105913814A CN201610211163.3A CN201610211163A CN105913814A CN 105913814 A CN105913814 A CN 105913814A CN 201610211163 A CN201610211163 A CN 201610211163A CN 105913814 A CN105913814 A CN 105913814A
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- display screen
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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
- G09G3/34—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
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
技术领域technical field
本发明涉及计算机技术领域，尤其涉及一种显示屏。The invention relates to the technical field of computers, in particular to a display screen.
背景技术Background technique
随着计算机技术的发展，智能手机等移动通信终端的设计越来越复杂，个功能的模块越来越多(如显示屏、摄像头、传感器、按键等)，各模块对终端通信系统的干扰也越来越多，显示屏就是其中最为明显的干扰源之一。With the development of computer technology, the design of mobile communication terminals such as smartphones is becoming more and more complex, and there are more and more modules with individual functions (such as display screens, cameras, sensors, buttons, etc.), and the interference of each module on the terminal communication system is also increasing. More and more, the display screen is one of the most obvious sources of interference.
现有技术中很多移动终端的显示屏都是LCD显示屏(Liquid Crystal Display，液晶显示屏)，液晶显示屏的MIPI(Mobile Industry Processor Interface，移动产业处理器接口)信号线在传输数字信号时，会产生MIPI点频干扰和46MHz的OSC干扰以及多倍频干扰。一般来讲，上述终端在进行通话的过程中，其接收的频段范围为GSM850和GSM900频段(800-1000MHz)，而上述显示屏产生的OSC和多倍频干扰(19倍频和20倍频)的频率会落在通话所需要的GSM850和GSM900频段范围(800-1000MHz)之内，也就是说，会对终端的通话性能形成干扰。The display screens of many mobile terminals in the prior art are LCD display screens (Liquid Crystal Display, liquid crystal display screen), and when the MIPI (Mobile Industry Processor Interface, mobile industry processor interface) signal line of the liquid crystal display screen is transmitting digital signals, MIPI point frequency interference, 46MHz OSC interference and multi-octave interference will be generated. Generally speaking, when the above-mentioned terminal is in the process of making a call, its receiving frequency range is GSM850 and GSM900 frequency band (800-1000MHz), and the OSC and multi-frequency interference (19-multiple frequency and 20-multiple frequency) generated by the above-mentioned display screen The frequency will fall within the GSM850 and GSM900 frequency range (800-1000MHz) required for calls, that is to say, it will interfere with the call performance of the terminal.
发明内容Contents of the invention
基于此，为解决传统技术中的液晶显示屏存在对终端的通话性能的干扰过大的技术问题，特提出了一种显示屏。Based on this, in order to solve the technical problem that the liquid crystal display screen in the conventional technology interferes too much with the call performance of the terminal, a display screen is proposed.
一种显示屏，所述显示屏上设置有IOVCC电源芯片，其特征在于，所述显示屏上还设置有一端与所述IOVCC电源芯片的出线口连接，一端接地的陷波滤波器。A display screen, which is provided with an IOVCC power supply chip, is characterized in that the display screen is also provided with a notch filter with one end connected to the outlet of the IOVCC power supply chip and one end grounded.
可选的，在一个实施例中，所述陷波滤波器为与所述IOVCC电源芯片的接地电容并联的调节电容。Optionally, in one embodiment, the notch filter is an adjustment capacitor connected in parallel with the ground capacitor of the IOVCC power chip.
可选的，在一个实施例中，所述调节电容的电容值为50-200pf。Optionally, in an embodiment, the capacitance value of the adjustment capacitor is 50-200pf.
可选的，在一个实施例中，所述调节电容对IOVCC电源芯片发出的800MHz-1000MHz的电磁波进行过滤。Optionally, in one embodiment, the adjustment capacitor filters the 800MHz-1000MHz electromagnetic wave emitted by the IOVCC power chip.
可选的，在一个实施例中，所述陷波滤波器与所述IOVCC电源芯片的出线口的距离小于5mm。Optionally, in one embodiment, the distance between the notch filter and the outlet of the IOVCC power chip is less than 5mm.
实施本发明实施例，将具有如下有益效果：Implementing the embodiment of the present invention will have the following beneficial effects:
采用了上述显示屏之后，与IOVCC电源芯片连接的陷波滤波器，可对作为OSC干扰源头的显示屏排线折弯处的IOVCC电源线所产生的电磁信号起到衰减作用，使得OSC辐射场强明显降低，对移动通话的宽频GSM850、GSM900接收频段(800-1000MHz)范围内的OSC凸包干扰起到抑制减少的作用，有效降低显示屏对射频造成的干扰，提高了通话质量，提升了用户体验。After using the above display, the notch filter connected to the IOVCC power chip can attenuate the electromagnetic signal generated by the IOVCC power line at the bend of the display cable as the source of OSC interference, making the OSC radiation field The intensity is significantly reduced, which can suppress and reduce the interference of the OSC convex hull in the broadband GSM850 and GSM900 receiving frequency band (800-1000MHz) of mobile calls, effectively reduce the interference caused by the display screen to the radio frequency, improve the call quality, and enhance the user experience.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
其中：in:
图1为一个实施例中一种陷波滤波器的电路结构示意图；Fig. 1 is a schematic diagram of a circuit structure of a notch filter in an embodiment;
图2为一个实施例中一种LCD显示屏的IOVCC电路结构示意图；Fig. 2 is a schematic diagram of the IOVCC circuit structure of a kind of LCD display screen in an embodiment;
图3为一个实施例中使用前述显示屏的终端在工作状态下的辐射场强示意图。Fig. 3 is a schematic diagram of radiation field intensity of a terminal using the aforementioned display screen in a working state in an embodiment.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
为解决传统技术中的液晶显示屏存在对终端的通话性能的干扰过大的技术问题，在本实施例中，特提出了一种显示屏。上述显示屏为液晶显示屏(LCD显示屏)，且该显示屏为能进行通话的移动通信设备的显示屏。In order to solve the technical problem that the liquid crystal display screen in the conventional technology interferes too much with the call performance of the terminal, in this embodiment, a display screen is specially proposed. The above-mentioned display screen is a liquid crystal display screen (LCD display screen), and the display screen is a display screen of a mobile communication device capable of talking.
具体的，上述显示屏上设置有IOVCC电源芯片，以及陷波滤波器，具体的，陷波滤波器的一端与IOVCC电源芯片的出线口连接，另一端接地。IOVCC电源芯片用于给显示屏提供电源，且IOVCC电源芯片是显示屏的OSC干扰的源头，也就是说，在IOVCC电源芯片在工作的过程中产生的辐射场会对终端的其他部件产生影响。Specifically, the display screen is provided with an IOVCC power chip and a notch filter. Specifically, one end of the notch filter is connected to the outlet of the IOVCC power chip, and the other end is grounded. The IOVCC power chip is used to provide power to the display, and the IOVCC power chip is the source of the OSC interference of the display, that is to say, the radiation field generated by the IOVCC power chip during operation will affect other components of the terminal.
陷波滤波器(notch filter)，可以在某一个频率点迅速衰减输入信号，以达到阻碍此频率信号通过的滤波效果；因为陷波滤波器是一种带阻滤波器，且阻带非常狭窄。在本实施例中，使用陷波滤波器针对宽频GSM850、GSM900接收频段(800-1000MHz)范围的频率信号进行滤波，从而对上述频率点上的干扰起到抑制、消除的作用。The notch filter can quickly attenuate the input signal at a certain frequency point to achieve the filtering effect that prevents the signal of this frequency from passing; because the notch filter is a band-stop filter, and the stop band is very narrow. In this embodiment, a notch filter is used to filter frequency signals in the wide-band GSM850 and GSM900 receiving frequency bands (800-1000 MHz), thereby suppressing and eliminating interference at the above-mentioned frequency points.
优选的，在一个实施例中，陷波滤波器为与IOVCC电源芯片的接地电容并联的调节电容。Preferably, in one embodiment, the notch filter is an adjustment capacitor connected in parallel with the ground capacitor of the IOVCC power chip.
如图1所示，图1给出了一种陷波滤波器的电路结构示意图。具体的，在电容C12的两端，并联接入了电容C14，该电容为调节电容。可以通过调节电容的电容值的调节，实现对陷波滤波器过滤的电磁波的频率进行调节，实现对不同频率的干扰频段的电磁波进行过滤。As shown in FIG. 1, FIG. 1 shows a schematic diagram of a circuit structure of a notch filter. Specifically, a capacitor C14 is connected in parallel to both ends of the capacitor C12, and the capacitor is an adjusting capacitor. By adjusting the capacitance value of the capacitor, the frequency of the electromagnetic wave filtered by the notch filter can be adjusted, and the electromagnetic wave in the interference frequency band of different frequencies can be filtered.
优选的，在一个实施例中，调节电容的电容值为50-200pf。Preferably, in an embodiment, the capacitance value of the adjustment capacitor is 50-200pf.
优选的，在一个实施例中，调节电容对IOVCC电源芯片发出的800MHz-1000MHz的电磁波进行过滤。陷波滤波器可以进行过滤的电磁波的频率范围是根据滤波器本身和调节电容的电容值，在本实施例中，主要是要对显示屏产生的对移动通信网络的干扰电磁波进行过滤，也就是说，需要对频率为800MHz-1000MHz的电磁波进行过滤。在本实施例中，在调节电容的电容值为50-200pf时可对800MHz-1000MHz的干扰电磁波进行过滤，从而使得显示屏产生的凸包噪声得到抑制，有效降低显示屏对射频造成的干扰，提高通话质量。Preferably, in one embodiment, the adjusting capacitor filters the 800MHz-1000MHz electromagnetic wave emitted by the IOVCC power chip. The frequency range of electromagnetic waves that can be filtered by the notch filter is based on the filter itself and the capacitance value of the adjustment capacitor. In this embodiment, it is mainly to filter the interference electromagnetic waves generated by the display screen to the mobile communication network, that is, Said, need to filter the electromagnetic waves with a frequency of 800MHz-1000MHz. In this embodiment, when the capacitance value of the adjustment capacitor is 50-200pf, the interference electromagnetic wave of 800MHz-1000MHz can be filtered, so that the convex hull noise generated by the display screen can be suppressed, and the interference caused by the display screen to the radio frequency can be effectively reduced. Improve call quality.
优选的，在一个实施例中，陷波滤波器与IOVCC电源芯片的出线口的距离小于5mm。Preferably, in one embodiment, the distance between the notch filter and the outlet of the IOVCC power chip is less than 5mm.
实施本发明实施例，将具有如下有益效果：Implementing the embodiment of the present invention will have the following beneficial effects:
采用了上述显示屏之后，与IOVCC电源芯片连接的陷波滤波器，可对作为OSC干扰源头的显示屏排线折弯处的IOVCC电源线所产生的电磁信号起到衰减作用，使得OSC辐射场强明显降低，对移动通话的宽频GSM850、GSM900接收频段(800-1000MHz)范围内的OSC凸包干扰起到抑制减少的作用，有效降低显示屏对射频造成的干扰，提高了通话质量，提升了用户体验。After using the above display, the notch filter connected to the IOVCC power chip can attenuate the electromagnetic signal generated by the IOVCC power line at the bend of the display cable as the source of OSC interference, making the OSC radiation field The intensity is significantly reduced, which can suppress and reduce the interference of the OSC convex hull in the broadband GSM850 and GSM900 receiving frequency band (800-1000MHz) of mobile calls, effectively reduce the interference caused by the display screen to the radio frequency, improve the call quality, and enhance the user experience.
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.
Claims (5)
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| CN201610211163.3A CN105913814B (en) | 2016-04-05 | 2016-04-05 | Display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109818684A (en) * | 2019-01-25 | 2019-05-28 | 维沃移动通信有限公司 | Signal processing system and terminal device |
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| US20130187712A1 (en) * | 2012-01-23 | 2013-07-25 | Qualcomm Incorporated | Impedance matching circuit with tunable notch filters for power amplifier |
| CN104994204A (en) * | 2015-07-22 | 2015-10-21 | 广东欧珀移动通信有限公司 | Method and system for lowering interference of terminal display screen |
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| CN101110601A (en) * | 2007-07-03 | 2008-01-23 | 华为技术有限公司 | signal connection device |
| US20130187712A1 (en) * | 2012-01-23 | 2013-07-25 | Qualcomm Incorporated | Impedance matching circuit with tunable notch filters for power amplifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109818684A (en) * | 2019-01-25 | 2019-05-28 | 维沃移动通信有限公司 | Signal processing system and terminal device |
| WO2020151511A1 (en) * | 2019-01-25 | 2020-07-30 | 维沃移动通信有限公司 | Signal processing system and terminal device |
| CN109818684B (en) * | 2019-01-25 | 2020-10-27 | 维沃移动通信有限公司 | Signal processing system and terminal device |
| US11652558B2 (en) | 2019-01-25 | 2023-05-16 | Vivo Mobile Communication Co., Ltd. | Signal processing system and terminal device |
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