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EP0469321A2
Expired / Lapsed
EP
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Back-light type liquid crystal display
Assignee: Rohm Co Ltd
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Filing: 1991-07-03
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Granted: —
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Expires: 2011-07-03
Abstract
Abstract A liquid crystal display includes a fixing frame (11) having a display window, a liquid crystal panel device (12) received in the frame in facing relation to the window, and a back lighter (14) received in the frame and stacked to the panel device on the side thereof away from the window. The back lighter has a light guide having a marginal edge provided with a fluorescent lamp (14b) which is arranged outwardly of a corresponding marginal edge of the panel device and offset toward the panel device, so that the lamp does not project beyond the rear surface of the light guide.
Inventors
- 👤 Osamu c/o Rohm Co. Ltd. Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:19
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0081; G02B6/0086; G02B6/0091; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/1336; G02F1/133615; G09; G09F; G09F13/00; G09F13/04; G09F13/0418; G09F13/0463
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
A liquid crystal display comprising: a fixing frame (11) having a display window (11 b); a liquid crystal panel device (12) received in said frame, said panel device including front and rear transparent plates (12a, 12b) between which a liquid crystal is sealingly arranged; and a back lighter (14) received in said frame and stacked to said panel device on the side thereof away from said window, said back lighter including a light guide (14a, 14c) which has at least one marginal edge provided with a fluorescent lamp (14b); characterized in that said lamp (14b) is located outwardly of a corresponding marginal edge of said panel device (12), said lamp being arranged offset toward said panel device in a manner such that said lamp does not projects beyond a rear surface of said light guide (14a, 14c).
Claim 2
Dependent Claim
137 words
A liquid crystal display comprising: a fixing frame (11) having a display window (11 b); a liquid crystal panel device (12) received in said frame, said panel device including front and rear transparent plates (12a, 12b) between which a liquid crystal is sealingly arranged; and a back lighter (14) received in said frame and stacked to said panel device on the side thereof away from said window, said back lighter including a light guide (14a, 14c) which has at least one marginal edge provided with a fluorescent lamp (14b); characterized in that said lamp (14b) is located outwardly of a corresponding marginal edge of said panel device (12), said lamp being arranged offset toward said panel device in a manner such that said lamp does not projects beyond a rear surface of said light guide (14a, 14c).
Claim 3
Dependent Claim
76 words
The display according to claim 1, wherein said lamp (14b) is attached to said light guide (14a, 14c) by means of a light shielding film (14d) which has a generally tubular enclosing portion (18) for receiving said lamp and a pair of leg portions (19, 20) extending from said enclosing portion for attachment to said light guide, one (19) of said leg portions located away from said panel device (12) extending tangentially to said enclosing portion.
Claim 4
Dependent Claim
36 words
The display according to claim 1 or 2, wherein said frame (11) has engaging pawls (11 d) which are bent to fixedly support said panel device (12) and said back lighter (14) relative to said frame.
Claim 5
Dependent Claim
40 words
The display according to claim 3, further comprising first buffer means (13a, 13b) interposed between said frame (11) and said panel device (12), and second buffer means (15a, 15b) interposed between said panel device (12) and said back lighter (14).
Claim 6
Dependent Claim
29 words
The display according to claim 3 or 4, wherein said engaging pawls (11 d) are bent to engage directly with said rear surface of said light guide (14a, 14c).
Claim 7
Dependent Claim
38 words
The display according to claim 3, further comprising a rear lid (16) arranged in facing relation to said rear surface of said light guide (14a, 14c), said engaging pawls (11 d) being bent to engage said rear lid.
Claim 8
Dependent Claim
53 words
The display according to claim 6, further comprising first buffer means (13a, 13b) interposed between said frame (11) and said panel device (12), second buffer means (15a, 15b) interposed between said panel device and said back lighter (14), and third buffer means (17a, 17b) interposed between said back lighter and said lid (16).
Claim 9
Dependent Claim
59 words
The display according to claim 1 or 2, further comprising first bonding means (13a', 13b') interposed between said frame (11) and said panel device (12) for attachment thereto, and second bonding means (15a', 15b', 15b") interposed between said panel device and said back lighter (14) for attachment thereto, said first bonding means being elastic for providing a buffer function.
Claim 10
Dependent Claim
27 words
The display according to claim 8, wherein said first bonding means (13a', 13b') is adhesively bondable to both of said frame (11) and said panel device (12).
Claim 11
Dependent Claim
31 words
The display according to claim 8 or 9, wherein said second bonding means (15a', 15b', 15b") is adhesively bondable to both of said panel device (12) and said back lighter (14).
Claim 12
Dependent Claim
22 words
The display according to claim 10, wherein said second bonding means (15a', 15b', 15b") is also elastic for providing a buffer function.
Claim 13
Dependent Claim
32 words
The display according to claim 10, wherein said second bonding means (15b") has a portion partially enclosing said lamp (14b), said partially enclosing portion being adhesively bonded directly to said frame (11).
Claim 14
Dependent Claim
23 words
The display according to claim 1, wherein said front plate (12a) of said panel device (12) being fitted into said window (11 b).
Claim 15
Dependent Claim
117 words
A liquid crystal display comprising: a fixing frame (11) having a front wall (11 a) formed with a display window (11 b), said frame also having a peripheral wall (11 c); a liquid crystal panel device (12) received in said frame, said panel device having a marginal edge spaced from said peripheral wall to define an accommodating space between said marginal edge and said peripheral wall; and a back lighter (14) received in said frame and stacked to said panel device on the side thereof away from said window for illuminating said panel device from behind; characterized in that said back lighter (14) includes at least one light source (14b) arranged to project into said accommodating space.
Claim 16
Dependent Claim
117 words
A liquid crystal display comprising: a fixing frame (11) having a front wall (11 a) formed with a display window (11 b), said frame also having a peripheral wall (11 c); a liquid crystal panel device (12) received in said frame, said panel device having a marginal edge spaced from said peripheral wall to define an accommodating space between said marginal edge and said peripheral wall; and a back lighter (14) received in said frame and stacked to said panel device on the side thereof away from said window for illuminating said panel device from behind; characterized in that said back lighter (14) includes at least one light source (14b) arranged to project into said accommodating space.
References Cited (Backward Citations)
No citation records indexed.
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