Methods of making and repairing resized flat panel displays
OwnerLawrence E. Tannas, JR.inventor
Life of this patent
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Abstract
Electronic flat panel displays (FPDs) including liquid crystal displays (LCDs) may be resized to meet custom size requirements for applications in aerospace and elsewhere. During the resizing process, pixel line defects may occur in the image due to electrical short circuits at the resized cut edge. Methods for repairing such short circuits are described, including use of mechanical, electrical, chemical, thermal, and/or other methods, and any combination thereof, to open the short circuits. The methods may be applied to the sealed cut edge to ruggedize the seal, even if image defects are not exhibited initially. The repaired short circuits may be stress tested to ensure the defects will not recur during the life of the display, and the repaired areas may be resealed.
Claims24
A method for resizing an electronic display, the display comprising a front plate, a back plate, a perimeter seal spacing the front and back plates apart, and image-generating medium contained in an area between the front and back plates and within the borders of the perimeter seal, the method comprising:
- identifying a cut line along each of the front and back plates to identify a target portion and an excess portion of the display;
- causing the display to separate along the cut lines to separate the target and excess portions of the display, thereby creating an exposed edge along the target portion communicating with the area between the plates of the target portion;
- pressing the plates of the target portion towards one another to space the plates apart by a predetermined cell gap;
- applying adhesive along the exposed edge;
- and
- removing electrical shorts at the exposed edge of the target portion.
11-31. (canceled)
A method for preventing a short circuit in a resized flat panel display, comprising:
- obtaining a target portion of a resized flat panel display;
- and
- applying a chemical etchant to a cut edge of the resized flat panel display, in a manner sufficient to increase the separation distance between circuit electrodes in proximity of the cut edge.
38-41. (canceled)
A method for ruggedizing a seal of a resized flat panel display, comprising:
- obtaining a target portion of a resized flat panel display having a resizing seal applied to a cut edge of the display;
- and
- rubbing the resizing seal with a chemical etchant sufficient to remove exposed electrodes.
A method for resizing an electronic display, the display comprising a front plate, a back plate, a perimeter seal spacing the front and back plates apart, and image-generating medium contained in an area between the front and back plates and within the borders of the perimeter seal, the front and back plates being spaced apart by a predetermined cell gap, the method comprising:
- cutting the display to separate a target portion from an excess portion, thereby creating an exposed edge along the target portion communicating with the area between the plates of the target portion;
- applying adhesive along the exposed edge such that at least a portion of the adhesive extends between the plates along the exposed edge;
- and
- removing substantially all of the exterior adhesive along the exposed edge that extends from between the plates while the adhesive that extends between the plates maintains a substantial seal along the exposed edge.
47-51. (canceled)
Dependencies are inferred from the claim text.