English Chine Definition Active Area
Perimeter dimensions of the conductive area, within the viewing area of the LCD glass.Annunciator
An active element, such as a symbol, word, or phra.Bezel
描写樱花A metal or plastic frame which fits over the LCD glass. The bezel acts as pressure device, compressing the elastomer connector between the LCD Cell Gap
The spacing between the two pieces of glass. This space contains the liquid crystal fluid.Chip-on-board The LCD driver is formatted into an area on the PCB. Electrical connections are made by micro diameter gold wires. The entire area is Chip-on-glass A new technology being developed, where the LCD driver format is actually mounted on the surface of the LCD glass.Chip-on-flex The LCD driver is incorporated into a flex connector, which is attached to the contact edge of the LCD glass.Common/
Backplane
烟台职业学院宿舍The conductive surface on one of the two pieces of glass, which superimpos the pattern on the cond piece of glass. The number of backplanes corresponds to the duty ratio.Cold Cathode Backlight
A type of fluorescent backlighting or edge lighting. Ud in medium to large size graphic LCD modules.Contact Edge The extended area of the LCD glass which contains the conductive leads/traces, to which electrical connections is made by a connector.Contrast ratio The difference in luminance between the unlected area and the lected area.Cursor
打屁股家规A row or block of dots, ud to indicate the location of the next character or symbol to be entered. Ud in dot matrix character and graphic LCD Dil Pins Individual metal pins, bonded by epoxy, to each conductive lead/trace on
the contact edge.
LCD 專業術語中英文對照表
Direct/Static Drive Each conductive lead on the contact edge, connects to one gment or annunicator.Dot/Pixel Typically a rectangular active element, when combined together in a matrix, forms a character or symbol.Dot Matrix A group of dots/pixels forming a character or symbol. The most common dot matrix is a 5 x 7 matrix (5 dots across; 7 dots down).DIL (Dual-In-Line)
Two parallel rows of connection holes on a PCB. Also refers to the type of connector needed with thi
s array.Duty Ratio 1/N, where N equals the number of energized or unenergized gments lected by one complete cycle.Elastomer Connector A strip of silicon rubber made up of quentially spaced conductive and non-conductive material. This is the most common connection method Electrophresis A phenomenon which occurs when excess DC voltage is applied to an LCD. Conductive particles from one piece of glass are transferred through the LC fluid and deposited on the conductive surface of the opposite piece of glass. A conductive spike is created thus causing a dead Electroluminesc ent Lamp Is a thin membrane consisting of two coated electrode plates with an aluminum reflector. When AC voltage is applied to the electrodes, the electrons collide with the light emission core. The energy given off is Fiber Optic Backlight Fiber optic are flattened and then sandwiched between two pieces of pliable plastic. The top piece is ud as the diffur. The opposite ends are tied into a coupler, which is connected to an LED or Halogen light Fill Hole A space left between the epoxy als, after asmbly on one end of the LCD glass. This space is ud to fill the glass with the LC fluid, which is noted by a mound of epoxy on one of the glass.Font The active pattern which has all information to be displayed in the LCD glass.Ghosting A phenomenon which occurs when voltage from energized element leaks to an adjacent OFF element and turns the adjacent element partially ON.Heat Seal A flat, flexible, adhesive connector which is bonded to the contact edge
of the glass by heat. Typically ud on large graphic modules.
Interconnect Dot Connects pattern piece of glass to each backplane. Consists of silver impregnated epoxy.
Inverter (DC to AC)Ud to power electroluminescent lamps. Converts DC to AC voltage at a high frequency 300Hz -1 kHz.
Isotropic Stage When the fluid heats up or cools down to the point where the fluid is no longer in the twisted nematic state. The molecules can no longer twist light and, therefore, all incoming light is absorbed. In positive image displays, the viewing area turns completely dark. The display will revert back to the twisted nematic state when cooled below the isotropic
Leads The conductive trace(s) on the contact edge of the glass.
LED Backlight A form of backlighting for small to medium size CDs that u surface mount LEDs on a substrate with a light diffur over the top. In some cas LEDs are placed at each end of the module and light is directed
Liquid Crystal Fluid Has properties of both a fluid and solid. Consisting of rod shaped, bipolar molecu
物流配送方案les, which in the OFF state are capable of twisting polarized light.
Module Consists of LCD (glass) connected to a PCB with drivers on board. Controllers, temperature compensation circuits, etc, are optional.
Multiplex Using multiple backplanes (commons) in order to reduce the number of connections between
促进发展
过敏皮肤痒Negative Image The viewing area is a dark color in the OFF state. The condition is achieved by having both front and rear polarizers in the same axis. In this mode, light pass through the energized areas. Some type of backlight must be ud in order to effectively view the information.
毗尼Pitch Is the center to center dimension of adjacent conductive traces, dots, or connector holes.
Polarizers Are made of a polymer acetate with iodide molecules incorporated in the material. The molecules are arranged to only allow scattered light to enter in one plane/axis. Twisted nematic LCDs require two polarizers,
Positive Image Active elements, when energized, appear dark in color against a light background (non-energized); I.e., reflective, transflective, transmissive,
RCF (Retardation control Film)A thin (100 micros thick) piece of material laminated to the rear polarizer. Function is to change normal blue colored dots to black. Ud on supertwist graphic modules with a CFL light source. Commonly
Reflective Typically a smooth silver/gray piece of polished aluminum foil bonded to the rear polarizer. Reflects the incoming ambient light. Note : Backlighting can note ud with a reflective type LCD.
Respon Time
(T OFF)
Total of delay time (Td off) and ri time Tr.
Respon Time (T ON)Total of ri time Tr and delay time Td on; Time interval between 10%(on) to 90%(on).
Saturation Voltage RMS voltage required to turn fluid to 90%(on).
Segment An active element of a digit (i.e., typically numeric digits have 7 gments and alpha/numeric digits can have 14 or 16 gments)
SIL (Single-In-Line)An LCD module having a single row of connection holes, LCD glass having a single contact edge.
Supertwisted Nematic (STN)An improved twisted nematic fluid (200 degrees twist or greater) which has better contrast and optimum viewing range than standard twisted nematic (90 degrees). Acronyms - SBE, New TN; NTN; SNTN.
TAB (Tape Automated Bonding)LCD driver or controller electronics are encapsulated in a thin, hard bubble package, of which the drive leads extend from the bubble package on a thin plastic substrate. The adhesive along the edges is ud to attach the TAB to the LCD glass and/or PCB.
Threshold Voltage RMS voltage required to turn fluid to 10%(on).
Transflective A type of backing which is bonded to the rear polarizer. Enables light to pass through the back, as well as reflecting light from the front.
Transmissive A type of LCD which does not have a reflector or transflector laminated to the rear polarizer. A backlight must be ud with this type of LCD configuration. Most common is transmissive negative image.
芒果止血吗Twisted Nematic (TN)A type of liquid crystal whereas the aligment surface and therefore the LC molecules are oriented 90 degrees from each surface of glass.
Viewing Angle A cone perpendicular to the LCD in which minimum contrast can be en.Viewing Area The dimensions measured from the inside perimeter of the LCD bezel or LCD glass epoxy al.Zebra Connector See Elastomer Connector.
