JPS64987A - Backlight device - Google Patents
Backlight deviceInfo
- Publication number
- JPS64987A JPS64987A JP15714387A JP15714387A JPS64987A JP S64987 A JPS64987 A JP S64987A JP 15714387 A JP15714387 A JP 15714387A JP 15714387 A JP15714387 A JP 15714387A JP S64987 A JPS64987 A JP S64987A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- sheet
- light
- light source
- laminating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To make it possible to reduce the thickness of the device even when the whole device is brightened and to reduce power consumption and heat generation by using a fine blind-like sheet formed by laminating two kinds of transparent layers having respectively different refractive indexes in parallel with each other as a reflecting plate.
CONSTITUTION: A planar reflector 2 is arranged under the fine blind-like sheet 1 laminating two kinds of transparent layers n1, n2 having respectively different refractive indexes in parallel with each other, a cold cathod-ray tube 3 to be a light source is arranged on a side position deviated from a position just under the sheet 1 and liquid crystal 4 is arranged just over the sheet 1. In the device, light from the light source is uniformly diffused without being attenuated and the whole liquid crystal 4 is uniformly irradiated with light, so that light irradiation can be satisfied only by one light source. Consequently the thickness of a liquid crystal display element can be reduced, energy can be saved when using the liquid crystal and equal characteristics capable of reducing a difference between bright and dark states on a display device and obtaining clear screen can be improved.
COPYRIGHT: (C)1989,JPO
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15714387A JPH0627974B2 (en) | 1987-06-24 | 1987-06-24 | Backlight device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15714387A JPH0627974B2 (en) | 1987-06-24 | 1987-06-24 | Backlight device |
Publications (3)
Publication Number | Publication Date |
---|---|
JPS64987A true JPS64987A (en) | 1989-01-05 |
JPH01987A JPH01987A (en) | 1989-01-05 |
JPH0627974B2 JPH0627974B2 (en) | 1994-04-13 |
Family
ID=15643122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15714387A Expired - Lifetime JPH0627974B2 (en) | 1987-06-24 | 1987-06-24 | Backlight device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0627974B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5317430A (en) * | 1991-12-11 | 1994-05-31 | Sharp Kabushiki Kaisha | Liquid crystal display device having transparent optical conductor integral with opaque support on end surfaces with no light source |
US5335100A (en) * | 1991-05-10 | 1994-08-02 | Sharp Kabushiki Kaisha | Apparatus for lighting a liquid crystal element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007249052A (en) | 2006-03-17 | 2007-09-27 | Nec Corp | Light control film, illuminator, and display device |
-
1987
- 1987-06-24 JP JP15714387A patent/JPH0627974B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5335100A (en) * | 1991-05-10 | 1994-08-02 | Sharp Kabushiki Kaisha | Apparatus for lighting a liquid crystal element |
US5317430A (en) * | 1991-12-11 | 1994-05-31 | Sharp Kabushiki Kaisha | Liquid crystal display device having transparent optical conductor integral with opaque support on end surfaces with no light source |
Also Published As
Publication number | Publication date |
---|---|
JPH0627974B2 (en) | 1994-04-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080413 Year of fee payment: 14 |