Flat-panel display device in which an edge of the light guide plate is slanted to provide a vacancy in which to dispose circuitry
First Claim
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1. A flat-panel display device comprising:
- a display panel including a light-transmission type display cell, driving circuits electrically connected to said display cell and control circuit boards electrically connected to said display cell via said driving circuits;
a surface illuminant unit including a substantially rectangular light guide plate and a tubular light source disposed on at least one edge surface of said light guide plate, one of the main surfaces of said light guide plate being a light-emitting surface, said at least one edge surface being a light-introducing surface(s); and
a bezel holding said display panel interposed between it and said surface illuminant unit;
wherein at least one adjacent edge surface adjacent to said light introducing surface(s) is inwardly inclined to form an acute angle θ
relative to said light emitting surface, so that at least a part of said driving circuits or at least a part of said control circuit boards is disposed in a vacancy created by the inclination of said adjacent edge surface; and
wherein said light emitting surface of the light guide plate is adjacent to said at least one adjacent edge surface.
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Abstract
A thin flat-panel display device having reduced picture-frame size (a width of non-displaying peripheral area) is provided without degrading the brightness. The flat-panel display device 1 comprises a display panel including a display cell, driving circuits connected to the display cell, and control circuit boards connected to the driving circuits, and a surface illuminant unit including a tubular light source disposed on one edge surface of a light guide plate. One of other edge surfaces adjacent to said one edge surface of the light guide plate, is inwardly inclined to form an acute angle θ relative to the light emitting surface of the light guide plate. In a vacancy created by the inclination of said other one of other edge surfaces, at least a part of the driving circuits or at least a part of the control circuit is disposed.
49 Citations
14 Claims
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1. A flat-panel display device comprising:
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a display panel including a light-transmission type display cell, driving circuits electrically connected to said display cell and control circuit boards electrically connected to said display cell via said driving circuits;
a surface illuminant unit including a substantially rectangular light guide plate and a tubular light source disposed on at least one edge surface of said light guide plate, one of the main surfaces of said light guide plate being a light-emitting surface, said at least one edge surface being a light-introducing surface(s); and
a bezel holding said display panel interposed between it and said surface illuminant unit;
wherein at least one adjacent edge surface adjacent to said light introducing surface(s) is inwardly inclined to form an acute angle θ
relative to said light emitting surface, so that at least a part of said driving circuits or at least a part of said control circuit boards is disposed in a vacancy created by the inclination of said adjacent edge surface; and
wherein said light emitting surface of the light guide plate is adjacent to said at least one adjacent edge surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A flat-panel display device comprising:
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a display panel including a light-transmission type display cell, driving circuits electrically connected to said display cell and control circuit boards electrically connected to said display cell via said driving circuits;
a surface illuminant unit including a substantially rectangular light guide plate and a tubular light source disposed on at least one edge surface of said light guide plate, one of its main surfaces of said light guide plate being a light emitting surface, said at least one edge surface being a light-introducing surface(s); and
a bezel holding said display panel interposed between it and said surface illuminant unit;
wherein said driving circuits are tape carrier packages (TCPs) connected to an array substrate of said display cell, at least one adjacent edge surface adjacent to said light-introducing surface(s) is inclined to form an acute angle θ
relative to said light emitting surface, so that said tape carrier packages (TCPs) are folded to extend along said adjacent edge surface; and
wherein said light emitting surface of the light guide plate is adjacent to said at least one adjacent edge surface. - View Dependent Claims (11, 12)
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13. A flat-panel display device comprising:
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a display panel including a light-transmission type display cell, driving circuits electrically connected to said display cell and control circuit boards electrically connected to said display cell via said driving circuits;
a surface illuminant unit including a substantially rectangular light guide plate and a tubular light source disposed on at least one edge surface of said light guide plate, one of its main surfaces of said light guide plate being a light-emitting surface, while said at least one edge surface being light-introducing surface(s); and
a bezel holding said display panel interposed between it and said surface illuminant unit;
wherein at least one adjacent edge surface adjacent to said light introducing surface(s) is inwardly inclined to form an acute angle θ
relative to said light emitting surface, so that at least a part of said driving circuits or at least a part of said control circuit boards is disposed in a vacancy created by the inclination of said adjacent edge surface; and
wherein said adjacent edge surface has a light absorbing property.
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14. A flat-panel display device comprising:
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a display panel including a light-transmission type display cell, driving circuits electrically connected to said display cell and control circuit boards electrically connected to said display cell via said driving circuits;
a surface illuminant unit including a substantially rectangular light guide plate and a tubular light source disposed on at least one edge surface of said light guide plate, one of its main surfaces of said light guide plate being a light-emitting surface, said at least one edge surface being light-introducing surface(s); and
a bezel holding said display panel interposed between it and said surface illuminant unit;
wherein at least one adjacent edge surface adjacent to said light introducing surface(s) is inwardly inclined to form an acute angle θ
relative to said light emitting surface, so that at least a part of said driving circuits or at least a part of said control circuit boards is disposed in a vacancy created by the inclination of said adjacent edge surface; and
wherein said adjacent edge surface has a light reflecting property.
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Specification
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Current AssigneeJapan Display Central Incorporated (Japan Display Incorporated)
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Original AssigneeKabushiki Kaisha Toshiba (Toshiba Corporation)
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InventorsHashimoto, Takeshi
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Primary Examiner(s)Sikes, William L.
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Assistant Examiner(s)SCHECHTER, ANDREW M
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Application NumberUS09/591,619Time in Patent Office760 DaysField of Search349/61, 349/62, 349/65, 349/150, 362/31US Class Current349/65CPC Class CodesG02B 6/0046 Tapered light guide, e.g. w...G02B 6/0083 Details of electrical conne...G02F 1/133615 Edge-illuminating devices, ...G02F 1/13452 Conductors connecting drive...
