CN202340276U - Decoherence device of laser liquid crystal flat panel television set - Google Patents
Decoherence device of laser liquid crystal flat panel television set Download PDFInfo
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- CN202340276U CN202340276U CN2011205259029U CN201120525902U CN202340276U CN 202340276 U CN202340276 U CN 202340276U CN 2011205259029 U CN2011205259029 U CN 2011205259029U CN 201120525902 U CN201120525902 U CN 201120525902U CN 202340276 U CN202340276 U CN 202340276U
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- liquid crystal
- line light
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Abstract
The utility model discloses a decoherence device, which has a small size and a simple structure and is suitable for a laser liquid crystal flat panel television set. The decoherence device comprises a laser light source, wherein the laser light source is matched with a light homogenizing plate of a liquid crystal panel; the laser light source is connected with a vibration device; damping devices are arranged on the two sides of the laser light source and the vibration device; the vibration device is used for driving the laser light source to do axial vibration; when the laser light source vibrates, an interference state on a liquid crystal screen is quickly changed; and laser speckles are eliminated by using an effect of persistence of vision of human eyes. The device has a simple structure and a small size; the light energy utilization rate of the light source is not reduced; and the decoherence device is particularly suitable for a flat panel display with strict requirements on size, power consumption and noise. According to the device, by using the effect of persistence of vision of human eyes, the feeling of laser speckles can be effectively eliminated, and the picture quality can be improved.
Description
Technical field
The utility model belongs to the laser display field, particularly a kind of eliminating coherence device of laser-activated liquid crystal cells panel TV.
Background technology
Laser display is because advantages such as its big colour gamut, long-life and low energy consumption are considered to the developing direction of Display Technique of future generation.In showing industry, little, the lightweight liquid crystal flat-panel of volume show consumed deeply like, laser display technology is applied to liquid crystal flat-panel shows and can bring into play the wide advantage of laser display colour gamut, remedy the deficiency of liquid crystal display, have vast market prospect.Because laser is a kind of coherent light; If it not being handled directly the CCFL light source that replaces current liquid crystal flat-panel as light source shows; Can occur the uneven laser interference speckle pattern of Luminance Distribution on the display screen, promptly so-called speckle has had a strong impact on picture quality.Therefore, in existing laser display technology, eliminating coherence is one necessary procedure.
Liquid crystal flat-panel display requirement volume is little, weight is little and noise is low; In the eliminating coherence technology of laser display; Have through methods such as vibrations screen, vibrations projector and smog disturbances; But all be to show to laser projection, complex structure and bulky can't satisfy the requirement that liquid crystal flat-panel shows.
The utility model content
The utility model is the defective that overcomes prior art, and the eliminating coherence device that a kind of volume is little, simple in structure, be fit to the laser-activated liquid crystal cells panel TV is provided.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of eliminating coherence device of laser-activated liquid crystal cells panel TV, it comprises laser line light source, laser line light source matches with the even tabula rasa of liquid crystal panel; Said laser line light source is connected with shaking device; In the both sides of laser line light source and shaking device is damping device, and shaking device drives laser line light source and does axial vibrations, and laser line light source will make the interference state on the LCD screen change fast when vibrations take place; Utilize the visual persistence effect of human eye, eliminate laser speckle.
Said shaking device is vibration motor or piezoelectric ceramic, and vibration frequency is greater than 50Hz, and vibration amplitude is between pixel to five pixel.
Said damping device is rubber, rubber or spring assembly.
Said laser line light source is the laser column source structure.
Said laser line light source is a word line LASER Light Source structure.
The eliminating coherence device of the utility model comprises shaking device and damping device.The utility model drives the laser line light source vibrations through shaking device; Laser beam scatter distributions in the even tabula rasa in LCD screen is changed fast; Thereby laser coherence is distributed to change; Utilize human eye vision to persist effect, eliminate the laser speckle that occurs on the laser-activated liquid crystal cells panel TV screen, improve the comfort level that human eye is watched picture.
The beneficial effect of the utility model is: the utility model can directly replace the CCFL/LED backlight of display panels; Realize the laser backlightization of liquid crystal backlight; Need not to transform the even photosystem of existing liquid crystal flat-panel; The colour gamut of LCD can reach more than 130% of NTSC gamut standards, and the degree bright-coloured true to nature of image color will be far superior to existing display.This apparatus structure is simple, and volume is little, does not reduce the luminous energy utilization rate of light source, is particularly suitable for volume power consumption and noise are had the flat-panel monitor of strict demand.Utilize the visual persistence effect of human eye, this device is the sensation of eliminate laser speckle effectively, improves image quality.
Description of drawings
Fig. 1 is the laser eliminating coherence apparatus structure sketch map of optical tunnel structure.
Fig. 2 is the laser eliminating coherence apparatus structure sketch map of light-radiating lens structure.
Among the figure: 1, shaking device, 2, damping device, 3, the even tabula rasa of liquid crystal panel, 4, the laser column source structure, 5, one word line LASER Light Source structure.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1:
Among Fig. 1, this eliminating coherence device comprises shaking device 1 and damping device 2.Wherein shaking device 1 links to each other with laser line light source, is used to drive laser line light source and does axial vibrations, and laser line light source will make the interference state on the LCD screen change fast when vibrations take place, and utilize the visual persistence effect of human eye, get final product eliminate laser speckle.
Said damping device 2 is positioned at the both sides of laser line light source and shaking device 1, is used to provide the vibrations space of laser line light source and shaking device 1, weakens vibrations influence to external world simultaneously.
Said damping device 2 is a flexible resilient material, can be rubber, rubber or spring assembly, is positioned at the both sides of laser line light source and shaking device, is used to reduce vibrations influence to external world.Said shaking device 2 does not block light path, so the efficiency of light energy utilization of can not demoting.
Said laser line light source has two kinds of forms, the laser column source structure that wherein a kind of form is a lateral direction light emission.Publication number is that the patent of 101714741A is described the laser backlight of this form.When adopting this laser backlight, system configuration is as shown in Figure 1, and the light of laser column source is injected in the even tabula rasa of LCD screen.
Embodiment 2:
Among Fig. 2, this eliminating coherence device comprises shaking device 1 and damping device 2.Wherein shaking device 1 links to each other with laser line light source, is used to drive laser line light source and does axial vibrations, and laser line light source will make the interference state on the LCD screen change fast when vibrations take place, and utilize the visual persistence effect of human eye, get final product eliminate laser speckle.
Said damping device 2 is a flexible resilient material, can be rubber, rubber or spring assembly, is positioned at the both sides of laser line light source and shaking device, is used to reduce vibrations influence to external world.Said shaking device 2 does not block light path, so the efficiency of light energy utilization of can not demoting.
Other a kind of form of said laser line light source is a word line LASER Light Source structure.One word line LASER Light Source is comparatively general, and these those skilled in the art should know its structural principle.When adopting this laser line light source, system configuration is as shown in Figure 2, the stack of red, green, blue three looks one word line LASER Light Source is fixed together, and makes three look laser rays coincide with the even tabula rasa input of LCD screen.
Claims (5)
1. the eliminating coherence device of a laser-activated liquid crystal cells panel TV; It comprises laser line light source; Laser line light source matches with the even tabula rasa of liquid crystal panel, it is characterized in that said laser line light source is connected with shaking device; In the both sides of laser line light source and shaking device is damping device, and shaking device drives laser line light source and does axial vibrations.
2. the eliminating coherence device of laser-activated liquid crystal cells panel TV as claimed in claim 1 is characterized in that, said shaking device is vibration motor or piezoelectric ceramic, and vibration frequency is greater than 50Hz, and vibration amplitude is between pixel to five pixel.
3. the eliminating coherence device of laser-activated liquid crystal cells panel TV as claimed in claim 1 is characterized in that, said damping device is rubber, rubber or spring assembly.
4. the eliminating coherence device of laser-activated liquid crystal cells panel TV as claimed in claim 1 is characterized in that, said laser line light source is the laser column source structure.
5. the eliminating coherence device of laser-activated liquid crystal cells panel TV as claimed in claim 1 is characterized in that, said laser line light source is a word line LASER Light Source structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205259029U CN202340276U (en) | 2011-12-15 | 2011-12-15 | Decoherence device of laser liquid crystal flat panel television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205259029U CN202340276U (en) | 2011-12-15 | 2011-12-15 | Decoherence device of laser liquid crystal flat panel television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202340276U true CN202340276U (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205259029U Expired - Fee Related CN202340276U (en) | 2011-12-15 | 2011-12-15 | Decoherence device of laser liquid crystal flat panel television set |
Country Status (1)
| Country | Link |
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| CN (1) | CN202340276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917558A (en) * | 2013-06-06 | 2019-06-21 | 瑞尔D股份有限公司 | System and method for vibrating screen to reduce speckle |
-
2011
- 2011-12-15 CN CN2011205259029U patent/CN202340276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917558A (en) * | 2013-06-06 | 2019-06-21 | 瑞尔D股份有限公司 | System and method for vibrating screen to reduce speckle |
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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: 20120718 Termination date: 20121215 |