Electro-optic matrix-type display panel incorporating optoelectronic addressing switches
First Claim
1. An electro-optic display system comprising a panel incorporating a matrix of rows and columns of display elements each capable of producing an optical display signal in response to electrical operating energy, a series of row addressing conductors electrically connected to those of said display elements in each row of said matrix, a series of column addressing conductors electrically connected to those of said display elements in each column of said matrix, a separate channel to each separate addressing conductor belonging to one of said series of addressing conductors, each of said channels comprising a photosensitive element for the purpose of opening the channel in which that photosensitive element is incorporated for a given period to enable electrical operating energy to be applied during the given period via the channel to an appropriate one of said addressing conductors, a generator of electro-magnetic radiation signals arranged to irradiate in response to electrical control signals selected ones of said photosensitive elements and a generator of electrical control signals arranged to feed electrical control signals to said generator of electromagnetic radiation signals, wherein said photosensitive elements are defined by a linear structure of photosensitive material deposited on said panel adjacent but distinct from said matrix of display elements and wherein a conductor structure for connecting said photosensitive elements to a source of electrical operating energy is deposited on said panel symmetrically with respect to said linear structure.
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Abstract
An electro-optic display system comprises a plurality of display elements each capable of producing an optical display signal in response to electrical operating energy, a separate channel to each of said display elements, each of said channels incorporating a photosensitive element for the purpose of opening the channel in which that photosensitive element is incorporated for a given period to enable electrical operating energy to be applied during the given period via that channel to an appropriate one of said display elements, a generator of electromagnetic radiation signals arranged to irradiate in response to electrical control signals selected ones of said photosensitive elements and a generator of electrical control signals arranged to feed electrical control signals to said generator of electromagnetic radiation signals. The display elements may be arranged in a straight line which may be one row or column of a matrix array of the elements. The photosensitive elements may be photoconductors or photovoltaic elements and they may be part of a single patch formed as an integrated structure with the display elements on a common substrate. The display elements may for example be electroluminescent elements or liquid crystal elements. The first mentioned generator may be a plurality of semiconductor light-emitting diodes.
37 Citations
9 Claims
- 1. An electro-optic display system comprising a panel incorporating a matrix of rows and columns of display elements each capable of producing an optical display signal in response to electrical operating energy, a series of row addressing conductors electrically connected to those of said display elements in each row of said matrix, a series of column addressing conductors electrically connected to those of said display elements in each column of said matrix, a separate channel to each separate addressing conductor belonging to one of said series of addressing conductors, each of said channels comprising a photosensitive element for the purpose of opening the channel in which that photosensitive element is incorporated for a given period to enable electrical operating energy to be applied during the given period via the channel to an appropriate one of said addressing conductors, a generator of electro-magnetic radiation signals arranged to irradiate in response to electrical control signals selected ones of said photosensitive elements and a generator of electrical control signals arranged to feed electrical control signals to said generator of electromagnetic radiation signals, wherein said photosensitive elements are defined by a linear structure of photosensitive material deposited on said panel adjacent but distinct from said matrix of display elements and wherein a conductor structure for connecting said photosensitive elements to a source of electrical operating energy is deposited on said panel symmetrically with respect to said linear structure.
Specification