![]() | This article reads like
a press release or
a news article and may be largely based on
routine coverage. (May 2011) |
Time multiplexed optical shutter (TMOS) is a flat panel display technology developed, patented and commercialized by Uni-Pixel Displays, Inc. TMOS is based on the principles of total internal reflection (TIR), frustration of TIR (FTIR) and field sequential colour generation (FSC). This combination of features make it suitable for applications such as mobile phones, televisions and signalling systems. [1] [2] [3]
A TMOS display system consists of a group of sub-systems
A TMOS unit is arranged as a set of layers placed atop another in the following order: the light guide, a transparent conductive layer, a TFT structure and the Opcuity active layer which includes a conductive layer.
When the two conductive layers are in contact is said that the pixel is open or active (ON), when the layers are separated then the pixel is closed or inactive (OFF) . The duration of the charge determines the amount of time the shutter is open or closed. To generate images displays, the previous process is specific for each pixel. The color generation is based on the field sequential colour (FSC) system.
Traditional displays use three part pixel, each pixel is created by displaying different intensities of three dots (red, blue and green) so close together that the human eye perceives them as a single colour. This technique takes advantage of the spatial additive colour. However, TMOS technology is based on temporal additive colour, it exploits the temporal resolving power of the human visual system. Red, green and blue light bursts are emitted at sufficiently high frequency that the human eye only perceive a single colours. Different durations of each burst, create different colours.
In TMOS the emitting duration of each burst is the same for the three colors, but the amount of time that each pixel stays open or closed can be only a percentage of the total time controlled by the quantity of the TFT charge (amount of time that the active layer is in contact with the light guide). Therefore, each coloured pixel is generated combining the precise time that each pixel is kept open for each colour burst.
Depending on the combination, a million of colours can be created. For instance:
TMOS technology offers many advantages over other popular technologies like LCD, plasma and OLED.
The main disadvantage is the necessity of a very high velocity; if it is insufficient a rainbow effect could appear at blink.
In the future, it aims to improve efficiency and features of that kind of screens. Some of these improvements are going to be a new guide light material, polycarbonate or flexible polymer, and the enlargement of the LED's gamut. What is more, the TFTs structure is going to be eliminated and a system of a stripes (rows and columns) called Simple Matrix will provide individual pixel control.
The following features are being investigated for TMOS displays:
![]() | This article reads like
a press release or
a news article and may be largely based on
routine coverage. (May 2011) |
Time multiplexed optical shutter (TMOS) is a flat panel display technology developed, patented and commercialized by Uni-Pixel Displays, Inc. TMOS is based on the principles of total internal reflection (TIR), frustration of TIR (FTIR) and field sequential colour generation (FSC). This combination of features make it suitable for applications such as mobile phones, televisions and signalling systems. [1] [2] [3]
A TMOS display system consists of a group of sub-systems
A TMOS unit is arranged as a set of layers placed atop another in the following order: the light guide, a transparent conductive layer, a TFT structure and the Opcuity active layer which includes a conductive layer.
When the two conductive layers are in contact is said that the pixel is open or active (ON), when the layers are separated then the pixel is closed or inactive (OFF) . The duration of the charge determines the amount of time the shutter is open or closed. To generate images displays, the previous process is specific for each pixel. The color generation is based on the field sequential colour (FSC) system.
Traditional displays use three part pixel, each pixel is created by displaying different intensities of three dots (red, blue and green) so close together that the human eye perceives them as a single colour. This technique takes advantage of the spatial additive colour. However, TMOS technology is based on temporal additive colour, it exploits the temporal resolving power of the human visual system. Red, green and blue light bursts are emitted at sufficiently high frequency that the human eye only perceive a single colours. Different durations of each burst, create different colours.
In TMOS the emitting duration of each burst is the same for the three colors, but the amount of time that each pixel stays open or closed can be only a percentage of the total time controlled by the quantity of the TFT charge (amount of time that the active layer is in contact with the light guide). Therefore, each coloured pixel is generated combining the precise time that each pixel is kept open for each colour burst.
Depending on the combination, a million of colours can be created. For instance:
TMOS technology offers many advantages over other popular technologies like LCD, plasma and OLED.
The main disadvantage is the necessity of a very high velocity; if it is insufficient a rainbow effect could appear at blink.
In the future, it aims to improve efficiency and features of that kind of screens. Some of these improvements are going to be a new guide light material, polycarbonate or flexible polymer, and the enlargement of the LED's gamut. What is more, the TFTs structure is going to be eliminated and a system of a stripes (rows and columns) called Simple Matrix will provide individual pixel control.
The following features are being investigated for TMOS displays: