Out-Active-Matrix-LCD

A reflective OAM-LCD, comprising:

• a transparent face substrate and a back substrate placed alongside and spaced apart from each other, the two substrates having internal surfaces facing each other and outside surfaces, each of the outside surfaces being on the other side of a substrate from the internal surface of such substrate;
• one or more transparent electrodes deposited on the internal surface of said face substrate;
• a LC layer;
• a series of separated electrodes deposited on the internal surface of said back substrate, forming a display matrix with the transparent electrodes deposited on the internal surface of the face substrate;
• a series of thin conductive leads deposited on the outside surface of said back substrate;
• an active matrix circuit deposited on the outside surface of said back substrate;
• wherein each of the thin conductive leads has two connecting ends, one of which being connected with a related electrode deposited on the internal surface of the back substrate and the other being connected with the conductive lead deposited on the outside surface of the back substrate through which the thin conductive leads make connection to the outside-active-matrix circuit;
• a polarizer at or near the outside surface of the face substrate;
• means for driving of the LCD by said outside-active-matrix circuit.

A scattering OAM-LCD, comprising:

• a parallel light backlight emitting parallel incident light;
• a focusing lens array plate having a series of focusing lens, each focusing lens comprises of one or more lenses;
• a scattering LCD, comprising:
• a transparent back substrate and face substrate placed alongside and spaced apart from each other, the two substrates having internal surfaces facing each other and outside surfaces, each of the outside surfaces being on the other side of a substrate from the internal surface of such substrate;
• a separated transparent electrode first array deposited on the internal surface of said back substrate;
• a second array of transparent electrodes deposited on the internal surface of said face substrate, forming a display matrix with said electrodes in said first array deposited on the internal surface of the back substrate;
• a scattering LC layer between the two arrays and the two substrates;
• means for focusing said parallel incident light emitted from said backlight on the outside surface of said back substrate to form a series of focus points by said focusing lens array;
• a series of conductive leads deposited on the outside surface of said back substrate between said focus points;
• an outside-active-matrix circuit deposited on the outside surface of said back substrate between focus points, and connected with said conductive leads;
• a projection lens array plate having a series of projection lenses located at the front of said scattering LCD, each projection lens comprises of one or more lenses;
• a black aperture array plate having a series of apertures located at the front of the projection lens array plate;
• said apertures being aligned with the related projection lenses, focusing lenses and separated electrodes so that light originally from the backlight through the focus points, the scattering LC layer and focused by the projection lens array plate will pass through the apertures;
• a face plate located at the front of the aperture array plate having some optical structure for adjusting the viewing angle and the direction of the output light and for obtaining the high brightness and high contrast of the display image;
• means for applying the ON operating voltage to the scattering LCD, so that the LCD is in a transparent state, and so that the incident light from the focusing lens can go through the LCD, and then focused in the aperture by the projection lens, and through the aperture to face plate as output from the device in the ON state;
• means for applying the OFF operating voltage to the scattering LCD, so that the LCD is in a scattering state, and so that the incident light from the focusing lens is scattered by the LCD, wherein the most part of this scattered light will be absorbed by the black aperture plate, and a small part of them can go through the small aperture as output from the device in the OFF state;
• means for modulating the intensity of the output light according to data signal in order to display an image, using the ON state and OFF state.

A scattering OAM-LCD, having only one lens for one image dot, comprising:

• a parallel light backlight to emit the parallel light;
• a scattering LCD, comprising:
• a transparent back substrate and face substrate placed alongside and spaced apart from each other, the two substrates having internal surfaces facing each other and outside surfaces, each of the outside surfaces being on the other side of a substrate from the internal surface of such substrate;
• a first array of one or more transparent electrodes on the internal surface of the back substrate;
• a second separated transparent electrode array on the internal surface of the face substrate, forming a display matrix with said transparent electrodes on the back substrate;
• a face plate located so that the LCD is between the face plate and the backlight;
• a black aperture array plate between the face plate and the LCD;
• said facing plate having optical structures for adjusting the viewing angle and the direction of the output light and for obtaining the high brightness and high contrast of display image;
• means for focusing the light emitted from the backlight on the outside surface of the face substrate at focus points;
• a series of conductive leads are deposited on the outside surface of the face substrate between the focus points;
• an outside-active-matrix on the outside surface of the face substrate between the focus points;
• a series of thin conductive leads in the face substrate, each of the thin conductive leads has two connecting ends and one of which is connected to a related separated electrode, and the other end is connected with the conductive leads and then to the outside-active-matrix;
• a series of chambers located at the black aperture array plate between focus points neighboring the LCD to hold the components of the active-matrix;
• said apertures being respectively aligned along a common optical axis with the related focusing lenses and the separated electrodes;
• means for applying the ON operating voltage to the scattering LCD, so that the LCD is in a transparent state, and the incident light from the focusing lens can go through the LCD, and then focused in the aperture by the focusing lens, and through the aperture through the face plate as output from the device in an ON state;
• means for applying the OFF operating voltage to the scattering LCD, so that the LCD is in a scattering state, and the incident light from the focusing lens is scattered by the LCD, wherein most of this scattered light will be absorbed by the black aperture plate, and only a small part of the light can go through the small aperture as output from the device in an OFF state;
• means for modulating the intensity of the output light according to the data signal and to display an image, using the ON state and OFF state.

A method of achieving high brightness and high efficiency color display without color filter, employing a device comprising:

• an OAM-LCD divided into groups of lines, said OAM-LCD including an active-matrix circuit on an outside surface for driving the lines;
• a backlight comprises a R, G, B color sequential pulse light source;
• said method comprising:
• (a) applying electrical signals to said circuit to sequentially address each of the lines in a group to cause LCD cells in each line to reach transmission saturation state;
• (b) causing one of R, G or B color light to be emitted by the source and passed through a line when LCD cells in such line reaches transmission saturation state to generate an image of said one of the colors;
• (c) repeating steps (a), (b) for generating images of the remaining two colors of R, G, or B color light;
• and
• (d) repeating steps (a), (b), (c) in order to provide a full color image.

A mosaic OAM-LCD, used for assembling a large screen or super large screen display, comprising:

• an array of OAM-LCDs, used for assembling the large screen or super large screen display, each OAM-LCD comprising:
• a parallel light backlight;
• an LCD with a layer of LC cells, an outside-active-matrix and conductive leads for driving the LCD cells;
• a projection lens array having a series of projection lenses, each projection lens comprising one or more lenses;
• a black aperture array plate, said lenses focusing light from said backlight towards the LC cells and apertures in the aperture array plate;
• means for assembling said array to form a large screen or super large screen display.

An outside-active-matrix LCD (OAM-LCD), comprising:

• a first and a second transparent substrate placed alongside and spaced apart from each other, the two substrates having internal surfaces facing each other and outside surfaces, the outside surface of each substrate being on the other side of such substrate from its internal surface;
• a liquid crystal (LC) layer between the two substrates;
• a first array of one or more transparent electrodes between the internal surface of the first substrate and the LC layer;
• a second separated electrode array between the LC layer and the internal surface of said second substrate, one of or the two arrays forming a display matrix;
• an active matrix circuit at or near the outside surface of the second substrate;
• means for electrically connecting at least some of the electrodes in the second array to said active matrix circuit;
• means for applying electrical potentials to the two arrays to drive the LCD by means of said active matrix circuit.

An outside-active-matrix LCD (OAM-LCD), comprising:

• a first and a second transparent substrate placed alongside and spaced apart from each other, the two substrates having internal surfaces facing each other and outside surfaces, the outside surface of each substrate being on the other side of such substrate from its internal surface;
• a liquid crystal (LC) layer between the two substrates;
• at least one focusing lens array having a series of focusing lens, each focusing lens comprising one or more lenses for focusing parallel incident light from a backlight source toward the device through the LC layer when it is transparent, said lenses focusing light from the backlight on the outside surface of said second substrate to form a series of focus points by said focusing lens array;
• an active matrix circuit at or near the outside surface of the second substrate, said circuit comprising components on the outside surface of said second substrate between focus points.