Liquid crystal display module having housing of C-shaped cross section
AssigneeJonand, Inc.
InventorsJohn L. Beiswenger, Darrell N. Chelcun
Life of this patent
Estimating the term…
Abstract
A liquid crystal display module defines a housing of essentially C-shaped cross-section for improved economy and for connection, protection, and support of the liquid crystal display and backlighting elements. Additionally, the drivers for the LCD may be so located by this invention, as to make room for a more intense light source to illuminate the LCD display. Also, the LCD module may exhibit a software variable color display through the use of one or more white or different color light sources and color polarizers. The invention also includes an improvement to the conventional means of applying printed circuitry to the unique housing.
Claims34
A liquid crystal display module which comprises:
- a liquid crystal display;
- a housing of essentially C-shaped cross-section, said liquid crystal display being attached to opposed ends of the C-shaped cross section of the housing;
- electronic control means positioned on said housing;
- conductor means carried by said housing and providing electronic communication between said electronic control means and said liquid crystal display;
- at least a pair of spaced light sources positioned within said housing to back-illuminate the liquid crystal display, said light sources each respectively emitting light of a first color and a second color;
- means for polarizing said light of said first color to substantially a first angle, and for polarizing light of said second color to a second angle which is substantially different from the first angle, said polarizing means being positioned in registry with said liquid crystal display for light transmission therethrough;
- said electronic control means selectively providing a plurality of regions of liquid crystal material in said liquid crystal display with independently controllable rotating and non-rotating capability of the polarization of light passing therethrough;
- and
- added polarizing means, positioned in registry with the liquid crystal display for transmission of light therethrough, whereby passage of one, but not both, of said first and second polarized, colored light at any given time takes place through each region as controlled by said electronic control means.
A liquid crystal display module which comprises:
- a liquid crystal display comprising liquid crystal material entrapped in a substantially planar area;
- a housing of essentially C-shaped cross-section, said liquid crystal display being attached to opposed ends of the C-shaped cross-section of said housing;
- electronic control means positioned on said housing, said electronic control means being carried on the side of said housing which is opposed to said liquid crystal display;
- conductor means carried by said housing and providing electronic communication between said electronic control means and said liquid crystal display;
- at least part of said conductor means extending about an exterior curved surface portion of said housing defined by said C-shaped cross-section;
- and
- said housing carrying, within said C-shaped cross-section, light producing means comprising at least one light source to provide back illumination of said liquid crystal display.
A liquid crystal display module which is capable of display in multiple colors, which module comprises:
- liquid crystal material entrapped between a pair of transparent plates forming a liquid crystal display;
- a pair of light sources of first and second colors, each of said light sources being positioned to illuminate substantially all of one side of said plates;
- means, in registry with said liquid crystal display, for polarizing said light of said first color to substantially a first angle and for polarizing light of said second color to substantially a second angle which is substantially different from said first angle;
- electronic control means for selectively and independently providing a plurality of regions of liquid crystal material in said liquid crystal material in said liquid crystal display with rotating and non-rotating capability of the polarization of light passing therethrough;
- added polarizing means, in registry with the liquid crystal display;
- and metal reflector means provided to said light sources to direct light to said plates and to serve as electronic noise shield means.
A liquid crystal display module which comprises:
- a liquid crystal display comprising liquid crystal material entrapped in a substantially planar area;
- a housing of essentially C-shaped cross section, said liquid crystal display being attached to opposed ends of the C-shaped cross section of said housing;
- electronic control means positioned on said housing, said electronic control means being carried on the side of said housing which is opposed to said liquid crystal display;
- conductor means carried by said housing and providing electronic communication between said electronic control means and said liquid crystal display, at least part of said conductor means extending about an outer curved surface portion of said housing defined by said C-shaped cross section;
- said housing carrying, within said C-shaped cross section, light producing means comprising at least one light source to provide back illumination of said liquid crystal display;
- means in registry with said liquid crystal display for polarizing light of a first color from said light source to substantially a first angle and for polarizing light of a second color from said light source to substantially a second angle which is substantially different from said first angle;
- electronic control means for selectively and independently providing a plurality of regions of liquid crystal material in said liquid crystal display with rotating and non-rotating capability of the polarization of light passing therethrough;
- and added polarizing means, in registry with the liquid crystal display, whereby one but not both of said first and second polarized, colored light may pass at any given time through a region as controlled by said electronic control means.
The liquid crystal display module of cliam 30 in which said electronic control means includes means for dithering the rotating and non-rotating capability of each liquid crystal region back and forth to permit the alternating passage therethrough of light at a rate of at least essentially 20 cycles per second, to provide an apparent variation of colors perceived by a viewer of the display module in given liquid crystal regions, depending on the relative amount of time that each color is allowed to pass through a region.
Dependencies are inferred from the claim text.