US6567137B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary light source unit for reflective liquid crystal display
Assignee: LG Display Co Ltd
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Filing: 2000-10-20
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Granted: 2003-05-20
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Expires: 2020-10-20
Abstract
Abstract An auxiliary light source apparatus for radiating light onto a reflective liquid crystal display is disclosed. In the apparatus, a reflective display module is pivotally installed to a main body. An auxiliary light source is opened and closed from and to the reflective display module to radiate light onto a display area of the reflective display module. Accordingly, the auxiliary light source apparatus uniformly radiates light onto the entire reflective liquid crystal display panel.
Inventors
- 👤 Jeong Min Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:26
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0033; G02B6/0035; G02B6/0038; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02B6/004; G02B6/0043; G02B6/0045; G02B6/0046; G02F1/1336; G02F1/133616; G02F2201/00; G02F2201/34
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
63 words
A liquid crystal display device (LCD), comprising: a main body; a display module connected to the main body; wherein the display module has an top portion, a bottom portion, and side portions; and an auxiliary light source, pivotally connected to the top portion of the display module, the auxiliary light source configured to radiate light onto a display area of the display module.
Claim 2
Dependent Claim
63 words
A liquid crystal display device (LCD), comprising: a main body; a display module connected to the main body; wherein the display module has an top portion, a bottom portion, and side portions; and an auxiliary light source, pivotally connected to the top portion of the display module, the auxiliary light source configured to radiate light onto a display area of the display module.
Claim 3
Dependent Claim
26 words
The LCD device according to claim 1 , wherein the auxiliary light source is configured to be opened and closed from and to the display module.
Claim 4
Dependent Claim
30 words
The LCD device according to claim 2 , wherein the auxiliary light source is opened from the display module at a certain angle beyond a viewing range of an observer.
Claim 5
Dependent Claim
21 words
The LCD device according to claim 1 , wherein the auxiliary light source has a width smaller than the display module.
Claim 6
Dependent Claim
25 words
The LCD device of claim 1 , wherein the auxiliary light source has a length substantially the same as the length of the display module.
Claim 7
Dependent Claim
78 words
A liquid crystal display (LCD) device, comprising: a lamp; a display module; a light guide plate having an output surface configured to emit light from the lamp through the output surface; a lamp reflector configured to reflect light from the lamp onto an incidence surface of the light guide plate; and a cover member enclosing the lamp, the lamp reflector and the light guide plate and engaging the upper portion of the display module with a hinge structure.
Claim 8
Dependent Claim
78 words
A liquid crystal display (LCD) device, comprising: a lamp; a display module; a light guide plate having an output surface configured to emit light from the lamp through the output surface; a lamp reflector configured to reflect light from the lamp onto an incidence surface of the light guide plate; and a cover member enclosing the lamp, the lamp reflector and the light guide plate and engaging the upper portion of the display module with a hinge structure.
Claim 9
Dependent Claim
24 words
The LCD device according to claim 6 , wherein one surface of the light guide plate is provided with a number of minute protrusions.
Claim 10
Dependent Claim
33 words
The LCD device according to claim 7 , wherein each of the minute protrusions has a section having a shape selected from one of a triangle, a square, a circle and an ellipse.
Claim 11
Dependent Claim
26 words
The LCD device according to claim 7 , wherein the minute protrusions are arranged at a differential density on said surface of the light guide plate.
Claim 12
Dependent Claim
26 words
The LCD device according to claim 6 , wherein one surface of the light guide plate is coated with a material having a high reflective index.
Claim 13
Dependent Claim
25 words
The LCD device according to claim 10 , wherein the material is arranged at a varying density on said surface of the light guide plate.
Claim 14
Dependent Claim
19 words
The LCD device according to claim 1 , wherein one surface of the light guide plate is roughly surface-treated.
Claim 15
Dependent Claim
46 words
The LCD device according to claim 1 , further comprising a reflector configured to surround a rear surface, a side surface, and the output surface of the light guide plate to reflect light emitted through the rear surface and the side surface toward the output surface.
Claim 16
Dependent Claim
44 words
The LCD device according to claim 13 , further comprising a light path changer for changing an output angle of light so that light emitted through the output surface of the light guide plate is directed to the display area of the display module.
Claim 17
Dependent Claim
44 words
The LCD device according to claim 6 , further comprising a light path changer for changing an output angle of light so that light emitted through the output surface of the light guide plate is directed to the display area of the display module.
Claim 18
Dependent Claim
63 words
The liquid crystal display (LCD) device, comprising: a main body; a display module pivotally connected to the main body; and an auxiliary light source, connected to the display module, the auxiliary light source configured to radiate light onto a display area of the display module, wherein the auxiliary light source has a length substantially the same as the length of the display module.
Claim 19
Dependent Claim
63 words
The liquid crystal display (LCD) device, comprising: a main body; a display module pivotally connected to the main body; and an auxiliary light source, connected to the display module, the auxiliary light source configured to radiate light onto a display area of the display module, wherein the auxiliary light source has a length substantially the same as the length of the display module.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-05-19 | 2006-11-18 | 2007-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-19 | 2010-11-18 | 2011-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-19 | 2014-11-18 | 2015-05-20 | $7700.00 | Window Closed / Lapsed |