OLED Vs. LED
When shopping for the newest and best televisions this year, the two main competing versions of display are the OLED and the LED TV’s. Both technologies offer super-slim designs and sharp, detailed 4K images, but there are some picture quality differences.
The main difference between an LED and OLED television screen is that the pixels of an OLED screen are self-illuminating, whereas the LED are used to light an LCD display. An OLED screen features a wider viewing angle than LED screens do, and they are also more energy-efficient when compared to their LED counterparts.
LED TVs use LCD display technology and an LED backlight to illuminate the screen. LED LCD displays tend to use ‘edge lighting’, where LEDs sit to the side of the display, not right behind it. The light from these LEDs is then fired through a matrix that feeds it through the red, green and blue pixels and into our eyes. The light of an OLED display can be controlled on a pixel-by-pixel basis. This sort of dexterity just isn’t possible with an LED LCD. There are three types of LED backlight: edge-lit, direct-lit, and full array. The backlight means that LED TVs can get very bright, so the picture looks vivid even with room lights on. Some high-performance LED TVs use "quantum dots" to increase brightness and color range. OLED TVs don't require a backlight because every pixel is self-illuminating. Because of this and the fact that every OLED pixel can switch off completely, these TVs can produce absolute black and infinite contrast. OLED TVs tend to look best in a dim or darkened room. OLED TVs also provide much wider viewing angles than LED TVs, which lose picture contrast and color as you move away from directly in front of the screen.
OLED TV has secured a strong presence in the premium TV market. LG Electronics is the most successful brand using LG Display’s OLED TV panels. As of 2018, the only company that produces commercial OLED TV panels is LG Display, and LG Electronics is the leading OLED TV producer. LGD also supplies OLED panels to other companies including Panasonic, Sony, Grundig, Philips, Metz, Loewe, Skyworth, Changhong, Haier, Konka, and others. LGD is converting LCD TV capacity to OLED and is also investing an additional 3 trillion KRW into a Gen 10.5 OLED production line, mainly producing >=65-inch TV panels. The company will also use the MMG method combining different sizes on one mother glass to improve efficiency and production costs. It is planning to almost double TV panel production in 2020.
New OLED TV technology solutions (RGB OLED, QD OLED, etc.) combined with printed manufacturing capabilities have the potential to enable lower-cost solutions and higher adoption rate. This year many panel suppliers (JOLED, BOE, CSOT, SDC, AUO) were able to demonstrate inkjet printed (IJP) OLED displays in various conferences and some will start mass production in 2020. First commercialization of soluble OLED panel is expected to be from JOLED’s new 5.5 Gen fab with mass production in 2020. IJP can enable higher display performance by enabling top emission large panels; this will facilitate the 8K revolution in OLED TV and increase optical performance.