Patent EP0109832A2 successfully refreshed from Google Patents.
EP0109832A2
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Panel display
Assignee: Toshiba Corp
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Filing: 1983-11-16
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Granted: —
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Expires: 2003-11-16
Abstract
Abstract A panel display consists of a matrix of picture elements each of which includes with image forming means, e.g. a liquid crystal display element, an electroluminescent display element, a plasma display element or an electrochromic display element, and light sensing means (5) which may be a photoconductor, a photo-diode or a phototransistor. The light sensing means of the picture elements constitute an output signal matrix, by which any picture element illuminated by a light emitting light-pen may be readily identified. If required, information stored in the located picture element may be revised.
Inventors
- 👤 Yasuhisa C/O Patent Division Oana
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:55
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/0412; G02; G02F; G02F1/00; G02F1/01; G02F1/0102; G02F1/13; G02F1/133; G02F1/135; G02F1/1354; G06F3/042
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
A panel display comprising a matrix of picture elements, each of which comprises image forming means (6) which changes the transmittance or reflectance thereof or the light intensity emitted thereby in response to application of electric voltage thereto, and which includes a transparent common electrode (7) and a display electrode (42), a plurality of address lines (32) and a plurality of data lines (31) for supplying input signals to each picture element; and characterised in that each picture element further comprises light sensing means (5) and in the provision of a plurality of address output lines (52) and a plurality of data output lines (51) operatively connected to the light sensing means of the matrix, for outputting element-identifying signals on receipt of light by a light sensing means (5).
Claim 2
Dependent Claim
129 words
A panel display comprising a matrix of picture elements, each of which comprises image forming means (6) which changes the transmittance or reflectance thereof or the light intensity emitted thereby in response to application of electric voltage thereto, and which includes a transparent common electrode (7) and a display electrode (42), a plurality of address lines (32) and a plurality of data lines (31) for supplying input signals to each picture element; and characterised in that each picture element further comprises light sensing means (5) and in the provision of a plurality of address output lines (52) and a plurality of data output lines (51) operatively connected to the light sensing means of the matrix, for outputting element-identifying signals on receipt of light by a light sensing means (5).
Claim 3
Dependent Claim
16 words
A panel display according to claim 1, wherein each light sensing means (5) is a photoconductor.
Claim 4
Dependent Claim
16 words
A panel display according to claim 1, wherein each light sensing means (5) is a photo-diode.
Claim 5
Dependent Claim
16 words
A panel display according to claim 1, wherein each light sensing means (5) is a phototransistor.
Claim 6
Dependent Claim
23 words
A panel display according to any one of the preceding claims, wherein each image forming means is a liquid crystal display element (6).
Claim 7
Dependent Claim
28 words
A panel display.according to any one of the preceding claims, wherein the light sensing means (5) are a plurality of devices produced on a bulk silicon layer (2).
Claim 8
Dependent Claim
27 words
A panel display according to any one of claims 1 to 5, wherein the light sensing means (54) are produced by employing the thin film transistor system.
Claim 9
Dependent Claim
26 words
A panel display according to any one of claims 1 to 4, wherein the image forming means is an electroluminescent display element (Figures 8 and 9).
Claim 10
Dependent Claim
22 words
A panel display according to any one of claims 1 to 4, wherein each image forming means is an electrochromic display element.
Claim 11
Dependent Claim
22 words
A panel display according to any one of claims 1 to 4, wherein each image forming means is a plasma display element.
Claim 12
Dependent Claim
34 words
A panel display according to any one of the preceding claims, further comprising means to remove an information element stored in a picture element and to supply another information element to that picture element.
References Cited (Backward Citations)
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