Characteristics of OLED Display OLEDIO™
OLED display OLEDIO™ by JOLED is an advanced display that is thin and light, realizing superb image quality.
Ultra-thin and light weight
OLEDIO™ realizes ultra-thin form of 1.3mm thickness and light weight of 500g, as a result of its simple panel structure with no backlight.*
OLEDIO™ is energy efficient because it does not need backlight and is self-illuminating device that each EL element can be ON/OFF as needed.
Superb picture quality and accurate color reproduction
OLEDIO™ has various advantages that can realize superb picture quality. It has 130% sRGB coverage that realizes greater color accuracy.*
High resolution and high definition
OLEDIO™ has capacity to realize superb picture quality of 4K resolution with 3,840(RGB) x 2,160, 204ppi.*
OLEDIO™ is self-illuminating device that each EL element can be ON/OFF as needed. When it is OFF, it displays perfect black (jet-black). There is no light leakage like LCD. It also accurately displays color fineness with contrast ratio of 1,000,000:1 for darker blacks and brighter whites.*
Fast response time
Fast in responding, it displays movies smoothly and beautifully, taking advantage of self-illuminating device.
*In the case of 22 inch 4K OLEDIO™
What is OLED?
OLED device is composed of two electrodes and several functional layers: electron transport layer (ETL), emitting layer (EML), and hole transport layer (HTL), etc. When a bias is applied between anode and cathode electrodes, electron and hole recombine in the EML and emit light in response to the current flow.
Features of JOLED display are: “RGB Printing” to realize great light efficiency, “Microcavity Structure” to realize high color purity by sharpening RGB lights, and “Top Emission” to realize high light utilization.
High color output without obstacles
Selectively strengthen RGB peak light waves
RGB side by side to realize high color purity
With JOLED’s proprietary TRIPRINT™ technology, RGB sub pixels are formed at once by printing. It is processed under atmospheric pressure without vacuum chamber nor metal mask. There is no material waste because it puts necessary quantity of materials onto target points by printing. The technology has also scalability merit because panels in variety of sizes can be manufactured with the same print head.
Difference of OLED Manufacturing Methods
Vapor deposition method : White deposition
・Requires high degree of vacuum ・Requires mask
Vapor deposition method : 3-color deposition
・Requires high degree of vacuum ・Requires high-definition mask
JOLED Technologies that Enable Further Advanced Displays
JOLED is researching and developing various flexible displays. A super light in weight, flexible and high performance display can be realized by replacing the conventional glass substrate to the plastic substrate, and using the oxide TFT. We are aiming at developing flexible OLED for practical use in near future.
TAOS TFT Technology
Actually JOLED display uses low temperature poly-silicon (LTPS) TFT. LTPS TFT has good performance to run the high current flow but has same tasks such as non-uniform TFT performance due to the crystallization process and high manufacturing cost.
JOLED is now focusing on developing TAOS TFT (Transparent Amorphous Oxide Semiconductor) which has high electron mobility for high current flow and is uniformly formed on the large substrate.
We have developed a novel self-aligned top-gate TFT and realized superior reliability, by using a technology to passivate TFT electrode by metallic reaction. Also putting our unique correction circuit technology, we will realize high quality but reasonable OLED displays using our TAOS TFT.