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EP0272018A2
Expired / Lapsed
EP
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Liquid crystal display apparatus
Assignee: Sony Corp
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Filing: 1987-12-02
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Granted: —
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Expires: 2007-12-02
Abstract
Abstract A liquid crystal display panel (7) for mounting on a reclinable seat back (6), wherein the visual angle of the panel (7) relative to a viewer is detected (VR3) to control a voltage impressed on the liquid crystal electrodes to maintain the quality of the image even if the viewing angle of the panel (7) is changed.
Inventors
- 👤 Hideo C/O Patent Division Tomita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 18:47
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/1306; G02F1/1309; B; B64; B64D; B64D11/00; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G2320/00; G09G2320/02; G09G2320/028
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
123 words
A liquid crystal display apparatus intended for mounting on a reclining mount (6); characterized by: a liquid crystal display panel (7) which can be reclined relative to a viewer of said panel (7), said panel (7) having at least one control electrode (T1, T2) to which an electrical signal can be supplied to control the quality of an image displayed on said panel (7); and means (VR3) for detecting the reclining angle of said panel (7) relative to the viewer and for controlling the magnitude of the electrical signal supplied to the control electrode (T1, T2) of said panel (7) as a function of the detected angle thereby to control the quality of the displayed image as a function of the reclining angle.
Claim 2
Dependent Claim
123 words
A liquid crystal display apparatus intended for mounting on a reclining mount (6); characterized by: a liquid crystal display panel (7) which can be reclined relative to a viewer of said panel (7), said panel (7) having at least one control electrode (T1, T2) to which an electrical signal can be supplied to control the quality of an image displayed on said panel (7); and means (VR3) for detecting the reclining angle of said panel (7) relative to the viewer and for controlling the magnitude of the electrical signal supplied to the control electrode (T1, T2) of said panel (7) as a function of the detected angle thereby to control the quality of the displayed image as a function of the reclining angle.
Claim 3
Dependent Claim
101 words
Apparatus according to claim 1 wherein the control electrode (T1) is for controlling the brightness of an image displayed by said panel (7) and wherein the reclining angle detecting means (VR3) includes a brightness control potentiometer (VR3) physically coupled to said panel (7) to be operated by it when said panel (7) is reclined from a first position to a second position, for supplying a control voltage to said control electrode (T1), said control voltage being varied in accordance with said reclining angle of said panel (7) thereby automatically to adjust the brightness of the displayed image on said panel (7).
Claim 4
Dependent Claim
101 words
Apparatus according to claim 1 wherein the control electrode (T2) is for controlling the contrast of an image displayed by said panel (7) and wherein the reclining angle detecting means (VR3) includes a contrast control potentiometer (VR3) physically coupled to said panel (7) to be operated by it when said panel (7) is reclined from a first position to a second position, for supplying a control voltage to said control electrode (T2), said control voltage being varied in accordance with said reclining angle of said panel (7) thereby automatically to adjust the contrast of the displayed image on said panel (7).
Claim 5
Dependent Claim
53 words
A liquid crystal display apparatus for mounting on a seat (5) having reclinable back (6), the apparatus comprising: a liquid crystal display panel (7) on the back (6) of said seat (5); characterized by: means (VR3) for controlling the contrast of said panel (7) according to the reclining angle of said seat (5).
Claim 6
Dependent Claim
53 words
A liquid crystal display apparatus for mounting on a seat (5) having reclinable back (6), the apparatus comprising: a liquid crystal display panel (7) on the back (6) of said seat (5); characterized by: means (VR3) for controlling the contrast of said panel (7) according to the reclining angle of said seat (5).
Claim 7
Dependent Claim
51 words
Apparatus according to claim 4 wherein the contrast of said panel (7) is controllable in response to an external control voltage and said contrast controlling means (VR3) includes a potentiometer (VR3) which supplies a control voltage to said panel (7), said control voltage being varied in accordance with said reclining angle.
Claim 8
Dependent Claim
54 words
A liquid crystal display apparatus for mounting on a seat (5) having a reclinable back (6), the apparatus comprising: a liquid crystal display panel (7) on the back (6) of said seat (5); characterized by: means (VR3) for controlling the brightness of said panel (7) according to the reclining angle of said seat (5).
Claim 9
Dependent Claim
54 words
A liquid crystal display apparatus for mounting on a seat (5) having a reclinable back (6), the apparatus comprising: a liquid crystal display panel (7) on the back (6) of said seat (5); characterized by: means (VR3) for controlling the brightness of said panel (7) according to the reclining angle of said seat (5).
Claim 10
Dependent Claim
51 words
Apparatus according to claim 6 wherein the brightness of said panel (7) is controllable in response to an external control voltage and said brightness controlling means (VR3) includes a potentiometer (VR3) which supplies a control voltage to said panel (7), said control voltage being varied in accordance with said reclining angle.
Claim 11
Dependent Claim
35 words
Apparatus according to claim 2, claim 6 or claim 7 wherein said panel (7) is supplied with a colour video signal having a pedestal level and said brightness control means (VR3) controls said pedestal level.
Claim 12
Dependent Claim
35 words
Apparatus according to claim 3, claim 4 or claim 5 wherein said panel (7) is supplied with a colour video signal and said contrast control means (VR3) controls the amplitude of said colour video signal.
Claim 13
Dependent Claim
62 words
A liquid crystal apparatus mounted on a reclining seat (5), the apparatus comprising: a liquid crystal display panel (7) on the rear side (6) of said seat (5); and means (1) for supplying a display signal to said panel (7); characterized by: means (VR3) for controlling the voltage of said display signal in accordance with the reclining angle of said seat (5).
Claim 14
Dependent Claim
62 words
A liquid crystal apparatus mounted on a reclining seat (5), the apparatus comprising: a liquid crystal display panel (7) on the rear side (6) of said seat (5); and means (1) for supplying a display signal to said panel (7); characterized by: means (VR3) for controlling the voltage of said display signal in accordance with the reclining angle of said seat (5).
Claim 15
Dependent Claim
30 words
Apparatus according to claim 10 wherein said voltage control means (VR3) includes a potentiometer (VR3) which produces a control signal in accordance with the reclining angle of said seat (5).
Claim 16
Dependent Claim
18 words
Apparatus according to claim 11 wherein said display signal is a colour video signal having a pedestal level.
Claim 17
Dependent Claim
19 words
Apparatus according to claim 12 wherein said control means (VR3) controls said pedestal level of said colour video signal.
Claim 18
Dependent Claim
19 words
Apparatus according to claim 13 wherein said controls means (VR3) further controls the amplitude of said colour video signal.
References Cited (Backward Citations)
No citation records indexed.
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