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US 8,525,955 B2Granted
Heater for liquid crystal display
AssigneeMultek Display (Hong Kong) Limited
InventorDing Hua Long
Life of this patent
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Abstract
A heater for a display such as a liquid crystal display (LCD). The heater includes a transparent film, a transparent conductive layer formed on a surface of the transparent film, and an optically clear adhesive (OCA) disposed over the conductive layer. The heater may be laminated directly to a rear transparent (e.g., glass) plate of an LC cell of the LCD using the OCA in a manner that is substantially free of air gaps or bubbles between the heater and the LC cell. Front and rear polarizers may be respectively disposed on outside surfaces of the LC cell and the heater.
Claims20
A device, comprising:
- a liquid crystal display (LCD) cell that includes:
- first and second transparent plates arranged parallel to each other, wherein each of the first and second transparent plates includes opposed inner and outer surfaces, and wherein the inner surfaces of the first and second transparent plates face each other;
- first and second transparent conductive layers respectively formed on the inner surfaces of the first and second transparent plates;
- and
- a liquid crystal material sealed between the first and second transparent conductive layers;
- and
- a heater that includes:
- a transparent substrate having opposed first and second surfaces, wherein the transparent substrate comprises a film, and wherein the film comprises a cellulose triacetate (TAC) or a cyclic olefin polymer (COP);
- and
- a third transparent conductive layer formed on the first surface of the substrate, wherein the third transparent conductive layer is adapted to generate heat upon flowing a current therethrough, and wherein the heater is disposed against the outer surface of the second transparent plate of the LCD cell so that the device is free of air gaps between the second transparent layer and the third transparent conductive layer.
7 more elements
A heater for a liquid crystal display (LCD), comprising:
- a transparent film including one of a cellulose triacetate (TAC) or a cyclic olefin polymer (COP);
- a transparent conductive layer formed on a surface of the transparent film;
- and
- first and second spaced bus bars disposed over a surface of the transparent conductive layer, wherein the transparent conductive layer is adapted to generate heat upon flowing a current therethrough via the first and second bus bars.
1 more element
A method of creating a heater, comprising:
- applying a transparent conductive layer to a surface of a transparent film, wherein the transparent film includes one of a cellulose triacetate (TAC) or a cyclic olefin polymer (COP);
- applying at least first and second conductive bus bars to the transparent film surface over the transparent conductive layer, wherein each of the first and second conductive bus bars extends from a first end of the transparent conductive layer to a second end of the transparent conductive layer;
- and
- laminating an optically clear adhesive (OCA) layer over the transparent conductive layer and the first and second conductive bus bars.
1 more element
A method of creating a heater, comprising:
- applying a transparent conductive layer to a surface of a transparent film;
- applying at least first and second conductive bus bars to the transparent film surface over the transparent conductive layer, wherein each of the first and second conductive bus bars extends from a first end of the transparent conductive layer to a second end of the transparent conductive layer;
- laminating an optically clear adhesive (OCA) layer over the transparent conductive layer and the first and second conductive bus bars;
- providing a liquid crystal (LC) cell that includes front and rear transparent plates arranged parallel to each other, front and rear transparent conductive layers respectively formed on inner surfaces of the front and rear transparent plates, and a liquid crystal material sealed between the front and rear transparent conductive layers;
- laminating the heater directly to the rear transparent plate of the LC cell using the OCA;
- laminating a front polarizer having a first polarizing axis to the front transparent plate of the LC cell;
- and
- laminating a rear polarizer having a second polarizing axis to the transparent film of the heater, wherein the first polarizing axis is different than the second polarizing axis.
5 more elements
A method, comprising:
- providing a heater including a transparent film, a transparent conductive layer formed on a surface of the transparent film, first and second spaced bus bars disposed over the transparent film, and an optically clear adhesive (OCA) disposed over the transparent conductive layer and the first and second bus bars;
- providing a liquid crystal (LC) cell that includes front and rear transparent plates arranged parallel to each other, front and rear transparent conductive layers respectively formed on inner surfaces of the front and rear transparent plates, and a liquid crystal material sealed between the front and rear transparent conductive layers;
- and
- laminating the heater directly to the rear transparent plate of the LC cell using the OCA.
1 more element
Dependencies are inferred from the claim text.