pctechguide.com

  • Home
  • Guides
  • Tutorials
  • Articles
  • Reviews
  • Glossary
  • Contact

Digital Flat Panels

An important difference between CRT monitors and LCD panels is that the former require an analogue signal to produce a picture and the latter require a digital signal. This fact makes the setup of an LCD panel’s position, clock and phase controls critical to obtain the best possible display quality and creates difficulties for panels that do not possess automatic setup features and require these adjustments to be made manually.

The problem occurs because most panels are designed for use with current graphics cards, which have analogue outputs. In this situation the graphics signal is generated digitally inside the PC, converted by the graphics card to an analogue signal, then fed to the LCD panel where it has to be converted back to into a digital signal. For the whole process to work properly, the two converters must be adjusted so that their conversion clocks are running in the same frequency and phase. This usually requires that the clock and phase for the converter in the LCD panel be adjusted to match that of the graphics card.

A simpler and more efficient way to drive an LCD panel would be to cut out the two-step conversion process and drive the panel directly with a digital signal. The LCD panel market is growing from month to month, and with it the pressure on graphics adapter manufacturers to produce products which allow this.

Efforts to define and standardise a digital interface for video monitors, projectors and display support systems were begun in earnest in 1996. But the process moved rather slowly in ensuing years, causing concern among manufacturers desperate for a standard. One of the earliest widely-used digital display interfaces is LVDS (low-voltage differential signalling), a low speed, and low voltage protocol optimised for the ultra-short cable lengths and stingy power requirements of laptop PC systems. Efforts to transition LVDS to external desktop displays foundered when the rival chipmakers – Texas Instruments and National Semiconductor – chose to promote different, incompatible flavours of the technology, FPD-Link and Flat-Link respectively. Other schemes such as Compaq’s Digital Flat Panel (DFP), VESA Plug and Display, and National Semiconductor’s OpenLDI also failed to achieve widespread acceptance.

Finally, the Digital Display Working Group (DDWG) came together at the Intel Developer Forum in September 1998 with the intent to put the digital display interface standard effort back on the fast track. With an ambitious goal of clearing through the confusion of digital interface standards efforts to date, the DDWG – whose initial members included computer industry leaders Intel, Compaq, Fujitsu, Hewlett-Packard, IBM, NEC and Silicon Image – set out to develop a universally acceptable specification. The hope was that Intel’s backing would greatly help in the establishment of an industry standard as it had done previously when it had helped push PCI over VL Bus, and when it stepped in to clear roadblocks for the V.90 modem standard.

In April 1999 the DDWG approved a draft Digital Visual Interface (DVI) specification, and in so doing, brought the prospect of an elegant, high-speed all-digital display solution – albeit at a fairly significant price premium – close to realisation.

  • VA – Vertically Aligned LCD Monitors
  • What in the LCD is IPS!?
  • ThinCRT Flat Panels
  • TFT LCD Monitors
  • LCD Resolutions and Picture Scaling
  • Liquid Crystal Light Polarisation in LCD Monitors
  • Polysilicon Flat Panels
  • Plasma Flat Panels
  • PALCD Flat Panels
  • OLED Flat Panels
  • MVA – Multi-domain Vertical Alignment in LCD Monitors
  • LEP Flat Panels
  • LED Flat Panels
  • LCD – Liquid Crystal Displays
  • IPS – In-Plane Switching LCD Monitors
  • HAD Flat Panels
  • Flat Panel Feature Comparisons
  • FED Flat Panels
  • Digital Flat Panels
  • DSTN LCD monitors
  • Creating Colour in LCD Displays
  • Flat Panel ALiS Technology

Filed Under: Flat Panel Displays

Latest Articles

Robotic Tape Storage Applications

There are all kinds of storage device that can be used to back up data, from high density super-floppy disks to DVD drives. But when it come to providing the speed, capacity and reliability needed to protect shared network data, most … [Read More...]

How It Works: The Idea and Technology Behind USB

In early 2001 the battle between IEEE 1394 and USB advanced another step with the 1394 Trade Association's approval of specifications for a faster version of IEEE 1394, called IEEE 1394b. The new standard is backwards compatible - special … [Read More...]

Disk Maintenance – The Disk Defrag

When most people want to purchase a new computer or upgrade their current one, they focus on finding a CPU with the quickest speed, the most computing cores, or the most RAM they can afford. However, they may be overlooking the most likely reason for computing slowdowns: Â fragmentation in the … [Read More...]

Streamline Startup Operations with Virtual Data Rooms

Modern startup projects that we see in the business cluster today are more than just a brilliant idea of a potentially successful project at the … [Read More...]

The Importance of Data Security in Retail IoT

The Internet of Things (IoT) is transforming the retail industry by connecting physical stores with digital platforms, enabling smart inventory … [Read More...]

Review of Temu From Purchaser and Affiliate

Temu is a relatively new online shopping platform that has quickly gained popularity, especially among Gen Z shoppers. It is known for its ultra-cheap … [Read More...]

Avoid Data Breaches Caused by Weak Passwords

Weak passwords are a common cause of data breaches and security vulnerabilities. Weak passwords make it easier for cybercriminals to gain unauthorized … [Read More...]

20 Cool Pictures of Silicon Valley You’re Sure to Love

Silicon Valley, a name synonymous with innovation and technological prowess, is a place where dreams and ideas come to life. Nestled in the heart of … [Read More...]

13 Funky Images of Laptops

In our digital age, laptops have become our faithful companions, indispensable tools for work, leisure, and everything in between. They've evolved … [Read More...]

Guides

  • Computer Communications
  • Mobile Computing
  • PC Components
  • PC Data Storage
  • PC Input-Output
  • PC Multimedia
  • Processors (CPUs)

Recent Posts

FPM DRAM

All types of memory are addressed as an array of rows and columns, and individual bits are stored in each cell of the … [Read More...]

Must Have WI-FI Router Features for the Office

The router is one of the most important pieces of hardware on a network. This is the device that basically shares the connection to the Internet among … [Read More...]

One-Click Operation of VHS Video to DVD Transfer Using ADVC-55

Once you have installed the ADVC-55 software, double-clicking the Let's CONVERT program icon causes a mini operating screen to appear above the … [Read More...]

[footer_backtotop]

Copyright © 2023 About | Privacy | Contact Information | Wrtie For Us | Disclaimer | Copyright License | Authors