CN2670963Y - Liquid-crystal displaying devices - Google Patents
Liquid-crystal displaying devices Download PDFInfo
- Publication number
- CN2670963Y CN2670963Y CN 200320123528 CN200320123528U CN2670963Y CN 2670963 Y CN2670963 Y CN 2670963Y CN 200320123528 CN200320123528 CN 200320123528 CN 200320123528 U CN200320123528 U CN 200320123528U CN 2670963 Y CN2670963 Y CN 2670963Y
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- liquid crystal
- deck
- polaroid
- layer
- display device
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model relates to a liquid crystal displaying device for various electrical appliances and meters. The liquid crystal displaying devices comprises a liquid crystal box composed of two transparent base plates and a liquid crystal layer sealed between two transparent base plates, electrodes, etc. The front side of the liquid crystal box is adhered with a transmission type upper polarizing film, and the rear side of the liquid crystal box is adhered with a reflection type lower polarizing film. The utility model can raise the using efficiency of the bright pixel light. Thus, the liquid crystal displaying device is provided with a higher displaying contrast grade.
Description
Technical field
The utility model relates to a kind of liquid crystal display device that is used for various electrical equipment, instrument.
Background technology
Common liquid crystal display device generally comprises by two-layer transparency carrier and is enclosed in liquid crystal layer between the two-layer transparency carrier and liquid crystal cell that electrode etc. constitutes, at the double-edged polaroid that posts transmission-type respectively of liquid crystal cell.In its procedure for displaying, light is injected by the front, and the selective transmission through two-layer polaroid penetrates along reverse path through the reflection of reflectance coating again.Its display mode has two kinds: a kind of is that the polarizing axis of working as double-edged polaroid is parallel to each other, and liquid crystal layer adds the pixel of selecting voltage and is bright attitude at this moment, adds the non-pixel of voltage of selecting and is dark attitude, promptly often black pattern; Another kind is that the polarizing axis when double-edged polaroid is vertical mutually, and liquid crystal layer added the pixel of selecting voltage and was dark attitude this moment, adds the non-pixel of voltage of selecting and is bright attitude, be i.e. normal white mode.For this structure because the light of bright attitude pixel is wanted the positive and negative two-layer polaroid of process 4 times, light utilize rate variance, therefore externally under the not enough occasion of illumination, bright polymorphic segment deepening makes to show that contrast reduces.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of utilization factor that improves bright attitude pixel light, the high liquid crystal display device of demonstration contrast.
Liquid crystal display device of the present utility model includes by two-layer transparency carrier and is enclosed in liquid crystal layer between the two-layer transparency carrier and liquid crystal cell that electrode etc. constitutes, the upper polarizer of one deck transmission-type is posted in the front of liquid crystal cell, and the following polaroid of one deck reflection type structure is posted at the back side of liquid crystal cell.At the following back side of polaroid one deck bottom surface layer can be set, this bottom surface layer can be that one deck can light-absorbing black absorption layer, also can be one deck silk-screen colorful film or one deck chromatics paper.In addition, bottom surface layer also can be set, but below the polaroid backlight be set down at the back side of following polaroid.
In the utility model structure,, make the path of light more reasonable owing to adopted following polaroid with reflection type structure.In the structure of no backlight, the light of bright attitude pixel is twice upper polarizer by the front only, has improved the utilization factor of light, makes to show that contrast improves greatly.In being provided with the structure of backlight, because light that can't be by following polaroid can repeatedly reflection between backlight and following polaroid, the light of backlight being fully used, thereby can obtaining the bright attitude that becomes clear more, raising demonstration contrast.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is the structural representation of another embodiment of the utility model.
Embodiment
As shown in Figure 1, the utility model includes the liquid crystal cell that is made of transparency carrier 1, liquid crystal layer 2 and electrode etc., the upper polarizer 3 of one deck transmission-type is posted in the front of liquid crystal cell, and the following polaroid 4 of one deck reflection type structure is posted at the back side of liquid crystal cell, at the back side of following polaroid one deck bottom surface layer 5 is arranged.Can adopt RDF series that SUMITOMO CHEMICAL 3M (strain) produces and DBEF series of products etc. as the following polaroid of the reflection type structure of polaroid 4.
Bottom surface layer 5 can be that one deck can light-absorbing black absorption layer.In this case, the configuration if the polarizing axis of the polarizing axis of upper polarizer 3 and following polaroid 4 is parallel to each other, then outer irradiation sees through polaroid 3 and becomes linearly polarized light, its direction of vibration is parallel with polarizing axis, this linearly polarized light is by liquid crystal layer 2, for adding the non-pixel liquid crystal that selects voltage, by the polarized light direction of vibration 90 change degree of this liquid crystal, and for adding the pixel liquid crystal of selecting voltage, constant by the polarized light direction of vibration of this liquid crystal.At this moment, add non-light quilt polaroid 4 reflections down of selecting the voltage lcd segment to see through, penetrate, be bright attitude along reverse path from upper polarizer; Add the light transmission polaroid 4 of selecting the voltage lcd segment to see through, descended the black absorption layer of polaroid below to absorb, be dark attitude.If the mutual arranged perpendicular of polarizing axis of upper polarizer 3 and following polaroid 4, then display effect is just in time opposite, promptly adds the non-pixel of voltage of selecting and is dark attitude, adds the pixel of selecting voltage and is bright attitude.
Bottom surface layer 5 also can be one deck silk-screen colorful film or one deck chromatics paper.In this case, the configuration if the polarizing axis of the polarizing axis of upper polarizer 3 and following polaroid 4 is parallel to each other, based on aforesaid principle, add the non-pixel liquid crystal of voltage that selects and be bright attitude, and select the voltage pixel liquid crystal for adding, because the reflection ray of silk-screen colorful film or chromatics paper is arranged, its display color, the demonstration of the apparent color graphics that so just can obtain putting one's cards on the table; If the mutual arranged perpendicular of polarizing axis of upper polarizer 3 and following polaroid 4, then display effect is opposite, obtains the demonstration of the obvious bright figure in the colored end.
Among the embodiment as shown in Figure 2, liquid crystal display device is transmission mode work, and promptly the positioned beneath at following polaroid 4 has a backlight 6.During work, the direction of vibration light component parallel with the polarizing axis of following polaroid 4 sees through in the vertical incidence light that backlight sends, and the direction of vibration light component vertical with the polarizing axis of following polaroid 4 is reflected.The light of reflected back is reflected once more polaroid 4 under the directive by backlight, wherein the direction of vibration light component parallel with the polarizing axis of following polaroid 4 sees through, and the direction of vibration light component vertical with the polarizing axis of following polaroid 4 is reflected once more, so repeatedly, the light of backlight is fully used, thereby the bright attitude that makes demonstration obtain becoming clear improves the demonstration contrast.
Claims (5)
1, a kind of liquid crystal display device, it includes by two-layer transparency carrier (1) and is enclosed in liquid crystal layer (2) between the two-layer transparency carrier and liquid crystal cell that electrode etc. constitutes, the upper polarizer (3) of one deck transmission-type is posted in the front of liquid crystal cell, it is characterized in that: and the following polaroid (4) of one deck reflection type structure is posted at the back side of liquid crystal cell.
2, liquid crystal display device according to claim 1 is characterized in that: the back side at following polaroid (4) is provided with one deck bottom surface layer (5).
3, liquid crystal display device according to claim 2 is characterized in that: described bottom surface layer (5) is one deck black absorption layer.
4, liquid crystal display device according to claim 2 is characterized in that: described bottom surface layer (5) is one deck silk-screen colorful film or one deck chromatics paper.
5, liquid crystal display device according to claim 1 is characterized in that: be provided with a backlight (6) below the polaroid (4) down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123528 CN2670963Y (en) | 2003-12-29 | 2003-12-29 | Liquid-crystal displaying devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123528 CN2670963Y (en) | 2003-12-29 | 2003-12-29 | Liquid-crystal displaying devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2670963Y true CN2670963Y (en) | 2005-01-12 |
Family
ID=34476479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320123528 Expired - Fee Related CN2670963Y (en) | 2003-12-29 | 2003-12-29 | Liquid-crystal displaying devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2670963Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8259264B2 (en) | 2006-06-26 | 2012-09-04 | Lg Display Co., Ltd. | Liquid crystal display device with viewing angle control areas having a black matrix that does not overlap with the data lines |
| CN103439827A (en) * | 2013-08-07 | 2013-12-11 | 亚世光电股份有限公司 | Liquid crystal display with white background display color image, and key manufacturing process of liquid crystal display |
-
2003
- 2003-12-29 CN CN 200320123528 patent/CN2670963Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8259264B2 (en) | 2006-06-26 | 2012-09-04 | Lg Display Co., Ltd. | Liquid crystal display device with viewing angle control areas having a black matrix that does not overlap with the data lines |
| CN103439827A (en) * | 2013-08-07 | 2013-12-11 | 亚世光电股份有限公司 | Liquid crystal display with white background display color image, and key manufacturing process of liquid crystal display |
| CN103439827B (en) * | 2013-08-07 | 2016-05-11 | 亚世光电股份有限公司 | Liquid crystal display and the key manufacturing technology thereof of the colored display frame of white background |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050112 Termination date: 20111229 |