CN1226785A

CN1226785A - Display screens for gapless TV wall and the same TV wall

Info

Publication number: CN1226785A
Application number: CN 98104766
Authority: CN
Inventors: 姜牧
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-16
Filing date: 1998-02-16
Publication date: 1999-08-25

Abstract

A display curtain board for seamless splice of TV wall features the use of fibrous curtain boards, Fresnel lens-scattering layer combined curtain board, high-resolution plasma and LCD display screen for higher image quality and brightness and uniform brightness field.

Description

Can be used for the display screen of television wall seamless splicing and with video wall that it spliced

The invention belongs to optical technical field.

Video wall has been used to many occasions, and along with the development of back projecting tech, it is perfect that the resultant effect of video wall is tending towards gradually.The applicant in three patent applications of 1995,1996,1997, has pushed this technology to darker development.(bright field is more even, and brightness is higher, and (stitching wide) image is interrupted much smaller than 1mm (unit's seam)).But with existing high-resolution, the marginal texture of plasma scope and LCD (color liquid crystal) can't carry out seamless splicedly, and these all await further perfect.

Purpose of the present invention just is.Provide and be easier to processing, more help the structure of screen splicing, make to splice seamless video wall cost lower, it is more reliable to work.Not anti-rear-projection mode can realize not having and sews up, and utilizes existing high-resolution, plasma display panel, and LCD (color liquid crystal) display panel also can be realized seamless splicedly, makes the video wall technology really become a practical technique.

Characteristics of the present invention are:

1. utilize and directly process on the surfaces externally and internally of fiber panel, lentiform projection and depression, fibre-optic diameter in the diameter of its lens or dimension and the fiber panel differs more than the several times, and convex-concave structure also helps the scattering of light on the optical fiber sidewall in addition.

2. utilize the photoconduction limit structure of processing on (Fresnel lens-scattering layer) combination rear projection screen can play the effect that protection is enclosed on the limit, can make the light of boundary that rational scatter distributions is arranged again; Because there is certain elasticity on the photoconduction limit.Thereby when splicing, seam is more naturally continuously.

3. show sub dull and stereotyped by changing existing high-resolution plasma, the marginal texture of LCD (color liquid crystal) and contact conductor mode can be carried out seamless video wall splicing easily.Because this class display, employing be pixel-matrix class addressing mode, thereby the image splicing is also more convenient, also is the development trend of following video wall.

Key problem in technology of the present invention is:

1. process the lenticular projection on fiber panel and the dimension (diameter) of depression, differ these characteristics more than the several times with fibre-optic diameter in the fiber panel, could eliminate structure to photodistributed influence, can make projection ray after the terminal transmission of optical fiber, obtain desirable light intensity space scattering and distribute, and optical loss is extremely low.

2. process the photoconduction edge protection on (Fresnel lens--scattering layer) combination rear projection screen; because projected light can be from one end incident; via photoconduction mechanism behind its internal communication; by its other end outgoing, the yardstick of the lens of being processed on the end face (microspike and depression) can be the part of photoconduction edge protection width again.And the micro-elasticity of photoconduction edge protection is alleviated in the time of can and using in assembling and is impacted, thermal deformation etc.The periphery of screen can be placed one deck edge protection again, so that it is more firm.

3. the present high-resolution of using, plasma and LCD (color liquid crystal) show the display panel of sub-device, all are that processing is used for computer, in the TV, are directly used in video and show sub.Also do not utilize such display panel to carry out the video wall splicing at present, its reason mainly is subject to cost and technical problem always.Owing to the structure of the edge that is subjected to existing such display panel and the restriction of electrode lead-out mode; carry out the seamless spliced of video wall and obtain good pixel excessive; all be impossible; based on above reason; the present invention is with the edge thickening of the substrate of above-mentioned display panel; or crooked to the inside, contact conductor can be drawn along the thickening sidewall or the flexure plane of substrate, the display panel periphery can be equipped with edge protection with the impact of releasing the pressure.

Below in conjunction with accompanying drawing, with regard to several preferred embodiments, the invention will be further described:

(figure one) back projection type optical fiber panel construction schematic diagram.

The lenticule of (figure two) optical fiber end is to the scattering process of projected light.

(figure three) I type band photoconduction limit (Fresnel lens--scattering layer) composite screen structural representation.

(figure four) II type band photoconduction limit (Fresnel lens--scattering layer) composite screen structural representation.

The good defeated characteristic schematic diagram of the light on (figure five) photoconduction limit.

(figure six) have high resolution plasma now, LCD (color liquid crystal) display panel contact conductor schematic diagram.

(figure seven) electrode side lead-out mode high resolution plasma, LCD (color liquid crystal) display panel structural representation.

Lead-out mode high-resolution plasma at the bottom of (figure eight) electrode, LCD (color liquid crystal) display panel structural representation.

Shown in (figure one): on fiber panel two surfaces 1. 2., be processed with respectively on the optic fiber end face of 3. going up the lenticular depressions or protrusions 4. reach rod lens shape projection and depression 5. and lenticular projection depression yardstick (or diameter) 4. and rod lens shape projection or depression width 5. all only to be one of several parts of optical fiber diameter following or more than the several times.Can be processed with certain projection and depression on the optical fiber sidewall in the panel, can be polygonal with the diffused ray fibre section.

Shown in (figure two): 6. 4. the lenticular projection of optic fiber end face can carry out suitable scattering with incident light with depression, because the lenticular projection only is number/one of optical fiber diameter with depression yardstick (diameter) 4., thereby on the end face a plurality of lens arrangements can be arranged, the result of the common scattered beam of a plurality of lens, make light at the fibre-optic other end 7. during outgoing, each part that 7. end face is gone up, the spatial distribution of light scatter is basically identicals all 8., and 9. the convex-concave structure of being processed on the optical fiber sidewall also helps the scattering of light.

But what need proposition is also scioptics membrane structure of scattering of light, and lens coating is the diaphragm that forms by with described the connecing of meniscus of above-mentioned same yardstick, and shortcoming is to have increased additional light loss (boundary reflection).Projection of processing on fiber panel and depression also can be more than the several times of fiber panel diameter in act plate.Each root fiber only falls into the part of a lens arrangement.

Shown in (figure three): 10. the photoconduction limit places gives in the groove that processes earlier, and projected light after transparent medium plate coattail end interface refraction, enters photoconduction limit end face 10., then by the other end outgoing 10. of photoconduction limit.The face of groove is that the plane also can be a curved surface

Be Fresnel lens, It is scattering layer. Be the transparent medium plate Be Guan County's frame.

Shown in (figure four):

The photoconduction limit Be overlying on rear projection screen, the periphery of swallow-tail form

On, projection ray

By the photoconduction limit An end face Incident is again by another end face

Outgoing, Be Fresnel lens, Be scattering layer, Be transparent medium,

It is fixed border.

Shown in (figure five): the photoconduction limit promptly can be a continuous lenticular sheet It also can be strip thin slice by a series of lateral light insulation

Form, or by thread optical fiber

Form (its end face can be polygonal) projected light

Surface feeding sputtering through the photoconduction limit after the little sub-convex-concave structure scattering on the end face, penetrates along the other end, and the other end can be the curved surface of definite shape, so that light is by good scattering.

Shown in (figure six): the electrode layout viewing of existing high resolution plasma or LCD (color liquid crystal) display panel is along substrate The edge protruding, electrode outlet line

With apparent sub-face Parallel.Such structure will unavoidably have bigger splicing side seam as being used for the video wall splicing.

Shown in (figure seven): with high resolution plasma or LCD (color liquid crystal) display panel On substrate edges Crooked to the inside, contact conductor

Also the curved edge with substrate is crooked to the inside, the electric lids in the outside

Covering in the electrode top, and at pole plate border external seal.This sampled images can reach the display panel edge.(crosspoint of electrode is image pixel)

Limit closed structure after handling like this helps reducing to splice side seam (pixel interruption), when with another piece display panel Mutually after the splicing, the visual pixel at the edge of two display panels

Distance can be less than the yardstick (can reach 1mm even littler) of several pixels.Contact conductor With substrate The edge can bend about 90 ° even more their inflection point downwards Pixel apart from edge The distance of (the pairing pixel of outermost end electrode in electrode network district) can be equal to or slightly less than 1 pixel dimension (less than 1mm).

In addition, the contact conductor after the bending And substrate The edge, formed plane, can with the curtain board plane

Vertical or acutangulate angle.

Shown in (figure eight): the contact conductor of high resolution plasma or LCD (color liquid crystal) Be from base plate (substrate)

Draw.Thereby the splicing between the display panel, the not big splicing side seam that can produce owing to the overslaugh of contact conductor.Cover plate

Be overlying on electrode network above, the pairing image pixel of electrode of edge can be less than several even 1 pixel dimension apart from the distance at edge.

With above-mentioned curtain plate, display panel, the display of being formed can be used for the big picture splicing of m * n, that is: m capable * n be listed as (m, n are positive integer), and forms video wall because special boundary formation will can not produce splicing side seam (pixel faces is broken minimum).

Substrate shown in (figure seven) (figure eight) in the display panel has enough thickness, and substrate then needn't bend, and contact conductor can directly be drawn along the substrate end-face bending, and lead-out mode is constant substantially.

* the swallow-tail form periphery of (figure four) indication, it is trapezoidal to refer to trapezoidal or bent limit, and this peripheral shape is actually four trapezoidal sides of a terrace with edge (quadrangle).

Claims

1. back projection type optical fiber display floater, its feature just is: on the lip-deep optic fiber end face of display floater or be processed with the projection and the depression of lentiform depressions or protrusions or strip on the fibre-optic sidewall; Be covered with lens coating on the inner surface of fiber panel.

2. optical fiber display floater as claimed in claim 1, its feature just is: the dimension of lentiform depressions or protrusions (diameter) is that the onesize or several times of used optical fiber diameter are above and below the several times; Below number/one who uses the photoconduction fibre diameter that the bar width of the projection of strip and depression is or more than the several times.

3. I type band photoconduction limit combination rear projection screen, its feature just is: lay the photoconduction limit in groove that curtain plate periphery is processed or dovetail shaped groove; Projection ray after curtain plate transparent medium refraction, enter photoconduction limit end face after, by the other end outgoing.

4. II type band photoconduction limit combination rear projection screen, its feature just is: lay the photoconduction limit on swallow-tailed curtain plate periphery, projection ray is directly by the surface feeding sputtering on photoconduction limit, again by another end face outgoing.

5. as screen as described in the claim 3.4, its feature just is described photoconduction guide margin, promptly can be a continuous transparent sheet, also can by a series of strip thin slices by the lateral light insulation form or by thread lead fibrous; The end face on photoconduction limit is processed with projection and depression.

6. electrode side lead-out mode high resolution plasma, the LCD display panel, its feature just is: the substrate of display panel edge is crooked to the inside, contact conductor also attaching substrates top is crooked to the inside together, and the formed plane of substrate after the bending and electrode and the angle of display surface are into 90 ° or acutangulate; In the inflection point of edge's pole plate and electrode (line) is several or 1 pixel dimension apart from the distance of edge pixel.

7. lead-out mode high resolution plasma at the bottom of the electrode, the LCD display panel, its feature just is: the contact conductor of display panel is outwards to draw from base plate (substrate) bottom; The pixel of edge apart from the distance at edge within 1 or several pixel dimension.

8. the big picture of m * n shows video wall, its feature just is, described big picture shows that the display unit of video wall is by back projection type optical fiber display floater, I type band photoconduction limit combination rear projection screen, II type band photoconduction limit combination rear projection screen, electrode side lead-out mode high resolution plasma, lead-out mode high resolution plasma at the bottom of LCD display panel, the electrode, the LCD display panel through m capable * n row splicing forms.