LED backlight classification yuav faib li cas
Apr 06, 2022
When it comes to the division of LED backlighting classification, it is important to first understand what LED backlighting means. LED backlighting refers to the use of LEDs (Light Emitting Diodes) as the backlighting source for LCDs. Compared with the traditional CCFL (cold cathode tube) backlight, LED has low power consumption, low heat generation, high brightness, long life, etc.
Currently, this LED backlight classification can be divided into RGB-LED and white LED. the former utilizes the capability of dynamic zoning backlight technology and the excellent light source of tri-color RGB-LED, which provides a qualitative leap in color and contrast compared with traditional backlight. As a result, it is usually suitable for high quality TV products and generally costs more than 3W. The latter is a relatively common LED backlight source, also widely used in notebook computers and LCD monitors. White LED backlighting usually uses light ingested from the edge of the display, which is different from RGB-LED and traditional backlighting with direct backlighting.
1, Raws li qhov xwm txheej ntawm LED backlight: LED backlight modules muab faib ua ob hom raws li qhov xwm txheej ntawm lub teeb qhov chaw: ncaj- nqes thiab sab - teeb, uas tuaj yeem faib ua roughly faib rau hauv ncaj- nqis RGB-LED, ncaj- cia dawb LED thiab sab- teeb dawb LED, thiab lwm yam.
2, qhov txawv ntawm RGB-LED thiab dawb LED: RGB-LED xim gamut kev ua tau zoo me ntsis, qhov tsis zoo yog tias tus nqi siab dua. Dawb LED teeb qhov chaw, txawm tias me ntsis qis dua RGB-LED nyob rau hauv cov xim gamut, muaj qhov sib txawv ntawm qhov sib txawv thiab cov nqi tsim nyog uas RGB-LED tsis sib xws.
3, qhov sib txawv ntawm qhov ncaj nraim thiab sab LED backlight: LED sab teeb qhov chaw emits lub teeb los ntawm ob sab ntawm lub cev thiab tej yaam num teeb rau lub vaj huam sib luag los ntawm lub built- nyob rau hauv siab transmittance teeb qhia. Txwv lub thickness ntawm LCD yog lub thickness ntawm fluorescent teeb. Sab lub teeb qhov chaw nyob ntawm qhov projection txoj hauj lwm ntawm ob sab, yog li nws tsis nyob qhov chaw ntawm lub TV thickness.
Compared with the side light source, the direct down backlight LED can dynamically control the backlight, making it possible to display a high-quality image effect with natural contrast between light and dark by adjusting only part of the light illumination in the desired backlight area (black or dark part of the screen) when representing some images of dark scenes.
