TSD-Introduction of LCD Characteristics

TSD-Shenzhen Team Source Display Technology Co, Ltd, established in 2004. ISO9001 and ISO14001 certified LCD Solution Provider and LCD Module Manufacturer.
We have are forcusing on almost full range of TFT LCD Display development and manufacturing. and almost monochrome LCD Display and LCD Module manufacturing, including COB and COG type modules.
And we would like to introduce the knowledge of LCD Characteriestics to every one. if you are interested in it and want to know more, you can mail me roger@tslcd.com, and we can have much more deeper communication in LCD and LCD module products.
LCD Characteristics
1.Operating temperature and storage temperature:
Operating temperature 0℃~50℃,storage temperature -20℃~70℃。
Wide rangeLCDoperating temperature -30℃~80℃,storage temperature -40℃~100℃.
2. Contrast:TN LCD:DUTY 1~1/8,Cr > 5.
DUTY 1/8~1/16 (1/8 included),Cr >3.
STN LCD:Cr > 3 for blue and gray type
Cr〉5 for yellow, green, yellow and green type
3. Response time:
TN LCD:Rising time < 250ms;
Falling time < 300ms.
STN LCD:Rising time<400ms;
Falling time < 400ms.
4. Viewing angle:TN LCD:DUTY 1~1/8〉 30°;
DUTY 1/8~1/16,> 25°.
STN LCD:DUTY > 1/64,> 50°;
DUTY < =1/64,> 30°.
5. Threshold Voltage:Minimum 0.7V for TN type under normal atmospheric temperature, minimum 0.8V for STN type. Threshold voltage may rise if LCD has a wide range temperature.

TSD-Introduction of LCD and LCD Module’s Production Process

TSD,Full Name Shenzhen Team Source Display Technology Co, Ltd,established in 2004. ISO9001 & ISO14001 Certified LCD and LCD Module Solution Provider and Manufacturer.

We will give the picture introduction of teh LCD glass and LCD Modules’ production process below,if you are interesting to learn more about LCD and LCD Display modules, you can go to our main website www.tslcd.com  or www.lcdlcm.com to learn more. Or you can contact lp@tslcd.com for more infos.

LCD  Production Process

 

LCD Module Prouction Process

TSD-TFT LCD Module Common Interface

TSD-Introduction of TFT LCD Modules’ common Interface
Commonly it have those interfaces in TFT LCM:likeTTL(RGB)、LVDS、EDP、MIPI,And then as the engineer of TEAM SOURCE DISPLAY / TSD, I will give very simple introduction of those interface. For some, I will use Chinese, and hope everyone can use Google to translate that if you needed those infos。
TSD, Full Name, Shenzhen Team Source Display Technology Co, Ltd.,established in 2004. Head Office located in Shenzhen,China.

TSD‘s business scope covers LCD / LCM Module development, single-chip production and materials processing. In a span of more than 10 years, we have developed thousands of LCD and LCM products for Industrial,home appliance, consumer electronics, medical equipment and other applications.

TSD also worked on the full range of the LCD products and LCD solutions development, offering customers unique, innovative, and cost effective yet market leading modules , catering for a range of applications and industries.TSD Strong and professional and experienced R&D engineers will support customers in new products developments in hardware and software & designs with quick effective way.

一、TTL
1、TTL接口概述
TTL(Transistor Transistor Logic)即晶体管-晶体管逻辑,TTL电平信号由TTL器件产生。TTL器件是数字集成电路的一大门类,它采用双极型工艺制造,具有高速度、低功耗和品种多等特点。
TTL接口属于并行方式传输数据的接口,采用这种接口时,不必在液晶显示器的驱动板端和液晶面板端使用专用的接口电路,而是由驱动板主控芯片输出的TTL数据信号经电缆线直接传送到液晶面板的输人接口。由于TTL接口信号电压高、连线多、传输电缆长,因此,电路的抗干扰能力比较差,而且容易产生电磁干扰(EMI)。在实际应用中,TTL接口电路多用来驱动小尺寸(15in以下)或低分辨率的液晶面板。TTL最高像素时钟只有28MHz。
TTL信号是TFT-LCD唯一能识别的信号,早期的数字处理芯片都是TTL的,也就是RGB直接输出到TFT-LCD。
2、TTL接口的信号类型
驱动板TTL输出接口中一般包含RGB数据信号、时钟信号和控制信号这三大类信号。如下图所示:

(1)RGB数据信号

a、单通道TTL

单通道6bit TTL输出接口
对于6bit单路TTL输出接口,共有18条RGB数据线,分别是R0~R5红基色数据6条,G0~G5绿基色数据6条,B0~B5蓝基色数据6条,共3*6=18条。由于基色RGB数据为18bit,因此,也称18位或18bitTTL接口
单通道8bit TTL输出接口
对于8bit单路TTI,输出接口,共有24条RGB数据线,分别是R0~R7红基色数据8条,B0~B7绿基色数据8条,BO~B7蓝基色数据8条,共3*8=24条。由于基色RGB数据为24bit,因此,也称24位或24bitTTL接口
b、双通道TTL
双通道,也就是两组RGB数据,分为奇通道、偶通道,时钟有的也分为OCLK/ECLK,有的公用一个我们示意图上画了两个,如下所示:

双通道6bit TTL输出接口
对于6bit双路TTL,输出接口,共有36条RGB数据线,分别是奇路RGB数据线18条,偶路RGB数据线18条,3*6*2=36条。由于基色ROB数据为36bit,因此,也称36位或36bitTTL接口
双通道8bit TTL输出接口
对于8bit双路TTL输出接口,共有48条RGB数据线,分别是奇路RGB数据线24条,偶路RGB数据线24条,3*8*2=48条。由于基色RGB数据为48bit,因此,也称48位或48bitTTL接口
(2)时钟信号
是指像素时钟信号,是传输数据和对数据信号进行读取的基准。在使用奇/偶像素双路方式传输RGB数据时,不同的输出接口使用像素时钟的方法有所不同。有的输出接口奇/偶像素双路数据共用一个像素时钟信号,有的输出接口奇/偶两路分别设置奇数像素数据时钟和偶数像素两个时钟信号,以适应不同液晶面板的需要。
(3)控制信号
控制信号包括数据使能信号(或有效显示数据选通信号)DE、行同步信号HS、场同步信号VS。

二、LVDS

1、LVDS接口概述
LVDS,即Low Voltage Differential Signaling,是一种低压差分信号技术接口。克服以TTL电平方式传输宽带高码率数据时功耗大、EMI电磁干扰大等缺点而研制的一种数字视频信号传输方式。LVDS输出接口利用非常低的电压摆幅(约350mV)在两条PCB走线或一对平衡电缆上通过差分进行数据的传输,即低压差分信号传输。采用LVDS输出接口,可以使得信号在差分PCB线或平衡电缆上以几百Mbit/s的速率传输,由于采用低压和低电流驱动方式,因此,实现了低噪声和低功耗。
2、LVDS接口电路的组成
   在液晶显示器中,LVDS接口电路包括两部分,即主板侧的LVDS输出接口电路(LVDS发送端)和液晶面板侧的LVDS输入接口电路(LVDS接收器)。LVDS发送端将TTL信号转换成LVDS信号,然后通过驱动板与液晶面板之间的柔性电缆(排线)将信号传送到液晶面板侧的LVDS接收端的LVDS解码IC中,LVDS接收器再将串行信号转换为TTL电平的并行信号,送往液晶屏时序控制与行列驱动电路。也就是其实TFT只识别TTL(RGB)信号。这部分我们做samsung的方案中用的比较多,因为samsung芯片没有LVDS输出,所以我们用LVDS接口的TFT-LCD的时候就要加一个(RGB-LVDS)转换芯片,这个后面我们重点说。

3、LVDS接口的信号类型
LVDS信号有数据差分和时钟差分信号组成。如下图所示:


(1)、单通道LVDS

单通道6位数据(如果是6位的Y3M/P这组红色的线没有)

4组差分线,3组信号线,一组时钟线。Y0M、Y0P、Y1M、Y1P、Y2M、Y2P、CLKOUT_M、CLKOUT_P。

单通道8位数据

5组差分线,4组信号线,一组时钟线。分别是Y0M、Y0P、Y1M、Y1P、Y2M、Y2P、CLKOUT_M、CLKOUT_P。

(2)、双通道

     LVDS在传输分辨率较高的数据时,抗干扰能力比较强,可是1920X1080以上分辨率时,单路不堪重负,所以有双路接口出现。目的很简单,加快速度,增强抗干扰能力。
双通道6位数据
刚好是单通道的两倍,时钟也是两路,红色部分:Y3M、Y3P、Y3M1、Y3M1这两组信号不接。
双通道8位数据
和前面的比较类似。
三、EDP
    这个接口比较陌生,我接触到一个屏IPAD3的,用于高清屏,比如2048*1536,goole n10的分辨率2536*  也是用这个接口。

(整理中…………)


四、MIPI接口
 MIPI,即移动产业处理器接口(Mobile Industry Processor Interface 简称MIPI)。移动行业处理器接口(MIPI)联盟由ARM、诺基亚、意法半导体和德州仪器发起成立。作为移动行业领导者的合作组织, MIPI联盟旨在确定并推动移动应用处理器接口的开放性标准。这种接口常见于智能手机等移动终端。同样也是采用差分信号,在HS模式,传输速率可以达到1Gbps.


(整理中…………)
五、TTL(RGB)转换成LVDS  

我们在项目中用到过两颗芯片:SN75LVDS83B 、THC63LVD827(可输出双路LVDS),以SN75LVDS83B来说明。

1、SN75LVDS83B、主控、LVDS接口的LCD关系
如下图所示SN75LVDS83B的应用:

其实就是:把三星芯片输出的TTL(RGB)信号转换成LVDS差分信号输出的LCD接收端。


硬件的接口如下所示:

2、SN75LVDS83B的参考电路
其实这部分要注意的是LCD的位数,你的屏是16bit、18bit、还是24bit的,不同位数的LCD有不同的硬件接线方法。如下图是samsung exynos4412提到的AP端,在不同位数输出时的接线图。

(1)、24bitRGB 24bit lcd
注意到用到五组差分信号线,四组信号一组时钟。

(2)、24bitRGB 18bit lcd
注意到用到四组差分信号线,三组信号一组时钟,Y3M、Y3P是NC的。AP端RGB的接线方式也不一样,6、7两个bit接地。

如果按(1)中的接线方法(24bit输出),接上18bit的屏。18bit 屏RGB(纯色)信号显示正常,可是有画面、渐变的就不正常。为此跟硬件争论了好久,不过问题解决了就好。做技术实践是非常重要的一个环节,有些事认识上的误区,就会导致工作的失误。


六、RGB转换成EDP
这个我们点过一个屏,不过分辨率太大,我们的系统非常卡,最后就停掉了。
线路图如下所示:

示意图:

edp 的信号和和lvds比较类似,不过多了一个HPD的信号。

Uses of LCD technology

If you need to display only photos can be used in any application screen LCD benefit. Here are a few places where you might find the use of LCD modules:

Hand-held electronics: LCDs can be found in a myriad of hand-held devices such as mobile phones, tablets, portable computers, and so on. They are also seen in digital wrist watches, and in digital compasses. LCDs can render images in full-color and with impeccable clarity. That’s the reason they are preferred in such devices.

graphic lcd module

Consumer devices: There are hundreds of small consumer-oriented devices such as calculators, electronic weighing machines, fixed-line phones, audio and video players, MP3 players, and interactive screens of other devices such as microwave ovens. These devices could have a graphic or character LCD screen. A graphic LCD screen displays all types of images, whereas a character LCD screen only displays alphabets, numerals, and characters.

Automotives: Cars, trucks, trains, airplanes, ships make extensive use of LCD and capacitive touch screens. These are used to either read, or input data. These displays form an integral part of flight instruments, and other navigational devices.

Medical devices: from the family of medical devices such as blood glucose levels and blood pressure monitoring device, in a more complex medical equipment, LCD is widely used in the medical field. Such devices can be integrated capacitive touch. Further, the apparatus may be provided with basic character ‘LCD.If you want to know more, visit:tslcd.

 

Related Reading: graphic LCD module Durable Graphic LCD High Luminance COB LCD

 

LCD Is Used For Industrial Purposes

LCD is used for industrial purposes. Its basic mission is to show the display unit What is it, but the output of the machine. These units may use high-resolution tft lcd display can be seen, as well as liquid crystal display liquid crystal device. Different sizes can be installed upon request. LED refresh rate is different, out of the box. So, if you consider using a stopwatch, and then within a few seconds, this is one of them flashed a technology recently created. The overall performance of the display device is superb. There favorite reason is that they are low maintenance costs. LED does not require much power neither any type of additional maintenance costs. Their whole job is fairly simple too; connected by wires occurs adjacent to the main circuit.

Internet is one of the preferred sources for purchasing them according to your requirements. There are numerous websites loaded over the internet which can be relied for buying one of these high end devices. As said there are different shapes and sizes too, you can select them by taking the display ration into confidence. The display ratio is selected when you need special type of preference for visibility. Larger the display better the quality of the screen.

 

In most scenarios use of light can be done which can give high end clarity in low lighted conditions. This is one of the preferred choices that can be selected, if there is a need for such type of process then yes the right display devices are available in abundance. Online service also caters to requirements of TFT LCD capacitive touch screen and Durable TFT LCD Module. On the internet there are loads of liquid crystal display manufacturer. All you need to do is find the right one which can suit industrial standards. Liquid crystal display unit therefore can be ordered directly through online services as there are various delivery features present. The internet also gives various payment options that can be used to save money and time.

tft lcd display

Thus, the liquid crystal display shows that when you need to use these specific industrial uses is essential. Its presence gives a different sight of global manufacturing. Various Sized TFT LCD Modules by reading the different instructions, is quite advanced. Each display data using high-end clarity. Glow options to make their advantage in low light conditions, such units have been installed process those working around the clock. If you want to know more, please visit: tslcd.

Advantages of touch screen industrial LCD monitors

Liquid crystal display used in industrial applications need only the desired functionality, carefully study and consider buying. It includes the purchase of liquid crystal display industry considerable investment. Therefore, the list must be made almost claims. It is also important to obtain information about the major manufacturers in this field has played a significant role in the market of ideas.

Another important factor, which one has to decide, is whether to go for an Graphic LCD Module with a flat display or a Touch Screen LCD. However, at this juncture the advantages of a touch screen LCD monitor do tip the scales a bit in its favor.

Advantages of touch screen industrial LCD monitors:

Touch screen technology has been playing a great role since the early 1970s. It has also become extremely popular in all these years. It is indeed a key asset in the field of industrial computing as it offers quite a number of advantages over its conventional counterparts. The fact that touch screen monitors act as an input device as well as an output device, makes it even more viable. One does not have to ask for a separate mouse, monitor or a keyboard while using a Graphical User Interface. It is so because the Touch Screen monitor does the work of all three. In industrial applications, Durable Graphic LCD are more durable and they are also often resistant to dirt, oil, grease, etc., which prevail in these environments.

Graphic LCD Module

While selecting a High Luminance COB LCD, it is really important to remember in which application it would be used, where it would be placed and of what size the monitor needs to be. If you want to know more, please visit our official website: tslcd.

why it pays to replace and not repair a TFT LCD module or display

 TFT Lcd Module with Capacitive

Over the years, LCD modules and LCD displays have grown in popularity. Companies in many different industries, including but not limited to the medical, automotive, consumer, food services, industrial, and technology sectors rely on at least one TFT LCD module or Intelligent LCD module on a daily basis. Although touchscreens are very durable and designed to withstand the hands of time, older modules and displays sometimes need to be repaired. When weighing the cost of having your displays repaired, you should take the time to consider your options.

 

Display repairs are not always cost effective

 

After doing some research on the cost of repairs, many business owners find that it makes more sense to have their cog lcd with pins connect replaced. Although units may cost less to repair initially, the cost of having to repair your older displays over and over again can add up. This is because older units may need to be repaired more than once. Even if multiple repairs will not cost any additional money, repairs lead to downtime and can have a tremendous impact on your business.

 

New touchscreen technology improves efficiency and boosts productivity

 

Older units in need of repair can have a long-term impact on a company’s bottom line. This is because outdated displays do not perform as well as new and improved displays. As many business owners have come to discover, new and improved touchscreen technology can increase efficiency, boost productivity, and improve customer satisfaction. This a top reason why so many companies decide to have a COG monochrome Lcd with IC display or module replaced.

 

If you are thinking about having your older touchscreens repaired, then you should consider how having newer technology in place will help your business grow. Focusing strictly on the cost of replacing your displays can have a long-term impact on your business in more ways than one. For better results, you should consider all of the benefits of having new custom touchscreens specifically manufactured for your business. Ultimately, having new and improved displays in place for your employees and customers to use will be a business decision that pays for itself over time. Know more visit:tslcd.com.

 

What You Need to Know About Panel Mount LCD

Panel Mount LCD (Liquid Crystal Display) are gaining popularity by the day. They can be mounted on a wall or on a panel. Panel mount LCD monitors can be mounted into an opening, inside a cabinet or any enclosure, from the front.

Features of panel mount LCD monitors:

* Such monitors are secured from the rear. They are available in different sizes from 6.4″ to wide screen 47″. They come with TFT LCD Screen that delivers sharp and crisp images in vivid colors. The images exhibit high brightness with maximum resolution.

* One of the main features of these monitors is that all the user controls are situated at the rear of the monitor. Thus, it is ideally suited for those applications where only a display is required, with no exposed control buttons. Except for the screen, no other external part is visible from the front. Panel mount LCD modules can be mounted from the rear with any VESA mount or any other compatible stand, arm, or mount.

* Most, Custom HTN LCD are available with an aluminum front. They have black bezels or edges, with mounting holes at the back. The rugged packaging within a steel or aluminum enclosure makes it sturdy for both indoor and outdoor use.

* A panel mount liquid crystal display is generally NEMA compatible. This means that it is versatile enough to be used outdoors too. Such displays offer a huge degree of protection against the harsh natural elements like dust, and rain, encountered in commercial and industrial applications. It is corrosion-resistant against splashing or hose-directed water. It is built to resist damage caused by the formation of ice. This assumes huge importance in places with extremely low temperatures during winter.

* These monitors perform well beyond regular monitors as it is primarily used as operator interface display or graphic user interface. They can be integrated with an analog resistive touch screen. It is available in a wide range of touch screen technologies, like, SAW, resistive and capacitive. All panel mount LCD exhibit plug and play features which does not require any special interface cards or video drivers.

Panel mount Air cleaner using HTN can be used for a variety of uses in commercial, industrial, and specialized applications. These maybe:

* Kiosks

* Arcade games

* Retail

* Ticketing

* Hospitality display

* Automation LCD Display

* ATM Machines

* Aviation Simulators

* Industrial Test Equipment

* Instrumentation

* Market Advertising Industry

* Marine Applications

* Military Applications

* Any other embedded display application

Many different types of LCD monitors are available in the market today. The versatility and ease of use provided by Panel mount LCD monitors is making them hugely popular. Know more visit:tslcd.

 

Enhanced Imagery and Great Quality With LCD / TFT Technology

STN Blue Background

If you are looking for a television monitor which has enhanced picture quality and elaborate imagery then it may be worth considering purchasing one that has lcd or tft qualities. There are a number of reasons why this type of monitor can give you a better output than other various types of monitors.

The Color TFT LCD uses thin transmitters and utilises the liquid crystal display to give a much better overall output so you can enjoy your programmes better. In addition, the advanced technology of TFT, which stands for thin film transistor, can improve image quality significantly thereby giving you the best picture quality within your television’s capacity and enhancing its overall features.

There are various electrical appliances that utilise lcd tft display technology in addition to televisions such as computers, mobile phones and video game systems and even some navigation systems which can give you the best quality there is with this innovative technology.

There are a range of products available to choose from which utilise the lcd tft technology so it is worth considering your choices in order to get the very best product according to your individual preferences and requirements.

There are various popular brands such as Acer, Dell and Samsung which utilise the revolutionary tft monitor within their products. An example of this is the Liquid Crystal Display Module which has the capacity to be used as a touch screen to be used as a PC so there is no need for a mouse and is ideal for those of you who enjoy using touch screen on an excellent monitor.

Another popular choice for lcd tfts is from the brand Phillips who have an excellent lcd tft 24 € TV widescreen with a 1080p monitor which is also ideal if you do not want to have a huge television but want a quality screen and great picture output.

There is an extensive range of products from mobiles to televisions and navigation systems that utilise lcd tft technology and it may be a good idea to do your research and compare the various different specifications according to the product, brand and even reviews from others who have used the product you are interested in.

What makes an enhanced monitor a cut above the rest is that it creates a more enjoyable viewing experience and enables more sophisticated capabilities, such as the touch screen PCs and touch screen navigators. Many flat screen televisions and mobiles with extensive ranges of apps tend to use Color TFT LCD Display technology because of the functions that it is capable of and the enhanced performance of features it can provide.

There are various brands on the market which have tapped into this revolutionary technology and many continue to produce new innovative products and services using the lcd and tft monitor systems, giving you more choice and value for money. The prices of products which use this enhanced technology vary according to the type of product you are buying and the brand. Know more visit:tslcd.

 

Browse Display Touch Screens and LCD Screens That Perfectly Unite Ergonomics and Design

Intelligent LCD module w/ Touch

For decades, designers and manufacturers across every industry have attempted to marry the concepts of aesthetics and performance whether it? in cars, clothes or cosmetics, the holy grail for these people is the production of LCD Module that performs to a high and consistent standard while looking fantastic and desirable at the same time.While this is a pipe dream for many companies, it? old hat for the team at GPEG International, which is the largest independent display manufacturer in the United Kingdom.

 

Since its formation, it has worked to develop its products under the knowledge that a product? face is the ultimate factor that drives a purchase even if the customer doesn? realise it, the way something looks will ultimately influence their decision when it comes to buying it or not, regardless of its performance. Therefore, the company manufactures screens and touchscreen technology for clients from a range of industries (including the gaming, marine, industrial and medical sectors) which not only look sleek, sophisticated and modern, but are also extremely easy to operate.

 

Its operations stretch across the world, from London and Italy to China and Korea, with the bulk of its manufacturing done in the Far East rather than in Europe this means that it can be done cheaply and quickly, which allows it to pass on their savings to the customers it sells them to. In addition, the company specialises in the creation of bespoke technology when none of the products it sells through its website are quite right for the job you need to take care of. This service not only solves a problem for you, but can also help put you ahead of your rivals, especially if your sector is quite commercial.

 

The technology and expertise that its experienced and knowledgeable team has access to means that the products it manufactures for you can help give you the edge you need over any competitors you might have in your industry.

 

Standardised products that the company has sold to hundreds to satisfied customers are available to browse through on its website. From segement LCD glass panel equipment, including COG technology and consumer high-end remotes, to a range of broadcast monitors that are capable of accepting any kind of television or computer signal and which are available in sizes ranging from 17 inches to 46 inches.If you want to ask any questions about a product or its availability, just fill out the enquiry form that is accessible from any product page.

 

Whether you need a  COG LCD Display to make running your business a bit easier or a custom LCD display for a new range of heart monitors, this is the only UK-based company that will be able to fulfil all of your requirements at once as long as you order from it, you?l never be frustrated in your search for the perfect union of design and performance again.

 

For more information visit:tslcd.