CN1734704A - Frameless screen color pixel tube - Google Patents
Frameless screen color pixel tube Download PDFInfo
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- CN1734704A CN1734704A CN 200410059134 CN200410059134A CN1734704A CN 1734704 A CN1734704 A CN 1734704A CN 200410059134 CN200410059134 CN 200410059134 CN 200410059134 A CN200410059134 A CN 200410059134A CN 1734704 A CN1734704 A CN 1734704A
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- screen
- color picture
- element tube
- guide plate
- pixel
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Abstract
The invention provides a no-border screen color pixel pipe as new CRT device to solve the problem in existing product that there are joints and less brightness. This product comprises color pixel pipe without shadow mask, and pixel guide board to eliminate screen border. Using a plurality of products of this invention can make up of plane or column color video large scale display that is without joint, large area, high brightness and definition.
Description
Technical field the present invention relates to the CRT chromatic display that uses in the color video large screen display device, particularly be used for the CRT chromatic display of shop drawings as jointless high brightness color video large screen display device.
It is one of method that realizes the color video large scale display that background technology is pieced together the composition big screen display screen with a plurality of chromoscopes, but there is the shortcoming of two essence in this method, the one, in existing chromoscope because the existence of shadow mask is arranged, limited the increase of scanning beam current, picture tube brightness is not reached in requirement outdoor and that other bright occasion is used; The 2nd, when forming large-screen with existing picture tube, the large-screen image of being formed is separated by the glass frame of each kinescope screen, forms width and reaches several centimetres level and vertical joint, seam crossing image disappearance.These two drawbacks limit the application of chromoscope in the large scale display field.
Summary of the invention has the frame two large problems for the brightness that solves existing color picture tube existence reaches screen inadequately, and the present invention proposes a kind of new CRT chromatic display---no frame screen color picture-element tube.The brightness of no frame screen color picture-element tube is significantly higher than existing chromoscope, and its screen shape is planar rectangular or face of cylinder rectangle, and screen picture does not have frame.Do basic display unit with this device, can piece together composition diagram as jointless high brightness color video big screen display screen, the display surface of display screen can be a planar shaped, also can be cylindrical so or annular.
No frame screen color picture-element tube is made of color picture-element tube and pixel guide plate two parts.Color picture-element tube is the CRT chromatic display that a kind of brightness is significantly higher than existing chromoscope, and its screen picture has frame; The pixel guide plate is a kind of optical module, and its face (to call the pixel guide plate back side in the following text) is close to the color picture-element tube screen, its another face (to call pixel guide plate front in the following text) is planar rectangular or face of cylinder rectangle, and this face is no frame.Image on the color picture-element tube screen is transmitted to pixel guide plate front by the pixel guide plate back side, obtains not having the image of frame in pixel guide plate front.
The technical solution adopted for the present invention to solve the technical problems is:
1. color picture-element tube is made of electron gun, phosphor screen and glass bulb, is vacuum in its shell.
2. the single pixel of color picture-element tube is a square, the Pixel Dimensions scope is between 4mm * 4mm to 20mm * 20mm, its elemental area than the elemental area of chromoscope big tens of times to hundreds of times, but its screen pixels sum then only is tens of/one of chromoscope sum of all pixels or still less.Each pixel is made up of three primary colours phosphor strips of red, green, blue, three equidistant from top to bottom arrangements of phosphor strip.Pixel is orthogonal arrangement on screen, forms the picture element matrix of the capable n row of m.Stay appropriate gap and fill graphite paint between adjacent phosphor strip between neighbor and in the pixel.At fluorescent coating behind AM aluminum metallization film.
3. color picture-element tube scanning beam cross section is more much bigger than the chromoscope, and its electron gun produces three scanning beams of vertical equidistant arrangement.The longitudinal size of each phosphor strip is identical on the longitudinal size of every electron beam cross section and the screen, and adjacent electron beam centre-to-centre spacing is identical with adjacent phosphor strip centre-to-centre spacing in the screen pixels, and therefore, electron beam along continuous straight runs run-down can cover one-row pixels.The scanning beam cross section is a strip, and its longitudinal size is 3～5 times of lateral dimension.Adopt the scanning beam of strip cross section, can guarantee that every electron beam vertically can cover a phosphor strip, can reduce the cross-sectional area of electron beam again, obtain bigger sweep current density, thereby increase the brightness of color picture-element tube.Adopt the electron beam of strip cross section, can also reduce the aperture effect, improve the horizontal definition of image.
4. because screen pixels size and scanning beam cross sectional dimensions are all more much bigger than the chromoscope, rely on prior art and technology, can accomplish in color picture-element tube, shadow mask not to be set and scanning deviation is controlled in the allowed band, so shadow mask is not set in color picture-element tube.Because there has not been the restriction of shadow mask, the useful beam electric current of color picture-element tube can significantly increase, thereby significantly improves its brightness.Geometric distortion and reduction scanning system power consumption in order to reduce raster adopt spherical screen and less deflection angle, and the center of curvature of screen curved surface are overlapped with the scanning beam deflection center.
5. adopt than the higher anode voltage of color picture tube to increase the brightness of color picture-element tube.In order to guarantee the stable of raster size, avoid occurring the dislocation of scanning beam screen-contacting point and screen phosphor strip, antianode voltage is taked the voltage stabilizing measure.
6. the pixel guide plate is made up of several transparent leaded light posts, and leaded light post quantity equates that with color picture-element tube screen pixels quantity each leaded light post is according to the sequence arrangement identical with screen pixels.The pixel guide plate back side is concave spherical surface, and its curvature is identical with color picture-element tube screen curvature, makes it can be close to the color picture-element tube screen.Each leaded light styletable is in the face of a pixel on the accurate screen, and the light that this pixel is sent conducts to the correspondence position in pixel guide plate front through the leaded light post, so can obtain the image identical with the color picture-element tube screen in pixel guide plate front.The leaded light post that is in pixel guide plate centre is shorter, and it is longer to be in the leaded light post of pixel guide plate edge, suitably selects the length of each leaded light post, can make pixel guide plate front become planar rectangular or face of cylinder rectangle.Pixel guide plate and color picture-element tube constitute no frame screen color picture-element tube, and pixel guide plate front becomes the screen of no frame screen color picture-element tube, and the leaded light styletable face in pixel guide plate front becomes the pixel of no frame screen color picture-element tube.The leaded light intercolumniation crack in pixel guide plate front is greater than the leaded light intercolumniation crack at its back side, so the positive size of pixel guide plate occupies the size of part greater than its back side leaded light post, suitably select leaded light intercolumniation crack, pixel guide plate frontal width be can make and the Breadth Maximum and the maximum height of color picture-element tube screen position outer rim are slightly larger than highly respectively, guaranteeing with no frame screen color picture-element tube assembly group large-screen the time, the glass frame at color picture-element tube screen position and other annex can not hinder respectively not to be had frame screen color picture-element tube and realizes at the screen position closely splicing.In order to obtain the image of brightness maximum in pixel guide plate front, two end faces of leaded light post should be perpendicular with this leaded light post central axis, and most of for this reason leaded light post all need have bending to a certain degree, the degree of crook difference of pixel guide plate different parts leaded light post.Fill with no-reflection and resilient black material in leaded light intercolumniation crack, producing the black matrix effect, and absorbs the stress that factor such as Yin Wendu produces, and prevents the cracked or pixel guide plate torsional deformation of leaded light post.The side bag layer of metal protective plate of pixel guide plate, protective plate thickness is slightly less than half of leaded light intercolumniation crack, pixel guide plate front, when no frame screen color picture-element tube splices mutually, the joint gap that forms is slightly larger than the twice of protective plate thickness, this joint gap is suitable with leaded light intercolumniation crack, thereby makes the large-screen that is spliced into not see seam.In order to guarantee the assembly unit accuracy, positioner is set at the screen position of each no frame screen color picture-element tube.
7. adopt single rifle three beams or three rifle tri-barrel electron guns, the vertical equidistant arrangement of three negative electrodes of electron gun, be rectangle or approximate rectangular with the perforate on the corresponding control utmost point of each negative electrode of electron gun and the intensifying ring, the longitudinal size in hole is about 3～5 times of its lateral dimension.Form three electron beams that cross section is a strip of vertical arrangement after through control utmost point hole and intensifying ring hole by the electron stream of cathode emission, become satisfactory three scanning beams of cross sectional dimensions after their line focuses.
8. for to avoid the light of each pixel of color picture-element tube to diffuse to adjacent leaded light post by screen glass, extrude pit in each phosphor strip position of screen glass inwall, fluorescent powder coated in the pit bottom surface, the bottom surface of pit is a convex surface, doing like this can be when reducing phosphor strip position thickness of glass, form a condenser at this position, the light that phosphor strip is sent produces focussing force.
9. plate or stick the colour filter film with this phosphor strip same color at the relative position of color picture-element tube offscreen surface,, produce the black matrix effect, improve the visual brightness of color picture-element tube to reduce phosphor powder layer scattering reflection of light to external world with each phosphor strip.
10. in order to adjust the up and down spacing of two electron beams and middle electron beam, make three electron beams aim at three phosphor strips of screen pixels respectively, electron beam channel up and down at the electron gun scanning beam port of export respectively is provided with a pair of additional vertical deflecting electrode, suit adjustable magnet ring of a pair of four magnetic pole types and the adjustable magnet ring of a pair of two magnetic pole types outside the color picture-element tube neck, additional vertical deflecting electrode and the adjustable magnet ring of four magnetic pole types are used for the distance of two electron beams and middle electron beam is up and down adjusted, and the adjustable magnet ring of two magnetic pole types is used for the static position of three electron beam screen-contacting points is carried out equidirectional adjustment.
11. colleague's pixel is in same horizontal line on the color picture-element tube screen, corresponding every scanning beam track while scan also must be complete level, for this reason, the vertical deflection magnetic field waveform of color picture-element tube need adopt m level (when lining by line scan) or m level (during interlacing scan) staircase waveform, and can not adopt sawtooth waveforms as chromoscope.
The present invention will be further described below in conjunction with drawings and Examples for description of drawings:
Fig. 1 is the side-looking generalized section of no frame screen color picture-element tube.
Fig. 2 is color picture-element tube screen and pixel schematic diagram.
Fig. 3 is a colour filter film schematic diagram on the color picture-element tube offscreen surface.
Fig. 4 is a pixel guide plate schematic rear view.
Fig. 5 is a pixel guide plate front schematic view.
Among the figure,
1 is that color picture-element tube 2 is the pixel guide plate
3 is that leaded light post 4 is positioning key
5 is that location notch 6 is pixel guide plate protective plate
7 for pixel guide plate front (be simultaneously boundless 8.9.10 be screen pixels red, green,
The screen of frame screen color picture-element tube) blue phosphor bar
11 is that phosphor strip horizontal clearance graphite paint 12 is phosphor strip down suction graphite paint
13 is but that four magnetic pole types and two magnetic pole type adjustable magnetics 14,15,16 are outside the color picture-element tube screen
Red, green, blue colour filter film on the ring surface
17 is that gun cathode 18 is the electron gun control utmost point
19 is that electron gun intensifying ring 20 is the additional vertical deflecting electrode of electron gun
21 is that electron gun focusing system 22 is deflecting coil
For the ease of clear thin portion of expressing color picture-element tube screen position and pixel guide plate, in each schematic diagram, all get m=n=8, in actual applications the equal value in the figure of m and n.
Embodiment is following to propose a specific embodiment, and elaborates in conjunction with the accompanying drawings.
According to the actual needs of places such as large stadium and digital camera to high-definition color video large scale display screen dimensions, the selected color picture-element tube Pixel Dimensions of present embodiment is 6.6mm * 6.6mm, screen phosphor strip horizontal clearance (11) is 0.2mm, down suction (12) is 0.6mm, and red, green, blue phosphor strip (8,9,10) size is 2mm (vertically) * 6mm (laterally).
Color picture-element tube picture element matrix m=n=96, screen pixels number are 96 * 96=9216.Corresponding screen effective display area is 633.6mm * 633.6mm, and screen position outer rim full-size is limited in 670mm * 670mm.Screen surface is a sphere.Deflection angle is 70 °.
Electron gun is single rifle three beam-type, three negative electrodes (17) vertical arrangement, and the control utmost point (18) and intensifying ring (19) are all opened three rectangular openings, and the longitudinal size in each hole is four times of its lateral dimension.It is the electron beam of rectangle that the electron stream of cathode emission forms three sliver transvers sections after by control utmost point hole and intensifying ring hole, after line focus system (21) focuses on, form three scanning beams, the cross section longitudinal size of every beam at the screen-contacting point place is that 2mm, lateral dimension are 0.5mm.
Electromagnetic mode is adopted in the deflection of electron beam.Horizontal yoke current is a sawtooth waveform, and vertical yoke current trace is m level or m level staircase waveform, and each grading current value can be set separately.
Anode voltage is 40KV, and carries out voltage stabilizing.
Pixel guide plate (2) is made up of 96 * 96 leaded light posts, and leaded light post (3) is made with colourless transparent glass.The cross sectional dimensions of leaded light post is 6.4mm (vertically) * 6mm (laterally), leaded light post side black coating look opaque coating.The leaded light post horizontal clearance at the pixel guide plate back side is that 0.2mm, down suction are 0.6mm, and the leaded light post horizontal clearance in pixel guide plate front is that 0.8mm, down suction are 1.2mm.In pixel guide plate front, every leaded light post footprint area (comprising the gap) is 7.2mm * 7.2mm, and this area is the single elemental area of no frame screen color picture-element tube.Calculate no frame screen color picture-element tube screen size thus and be (7.2 * 96) mm * (7.2 * 96) mm=691.2mm * 691.2mm.
Pixel guide plate protective plate (6) is a sheet metal, protective plate and pixel guide plate outermost layer leaded light post close adhesion, and two side protective plate thickness are 0.3mm up and down, left and right sides protective plate thickness is 0.5mm.At protective plate rear portion suitable position each two of positioning key (4) and location notchs (5) are set.
Claims (10)
1. no frame screen color picture-element tube, it is characterized in that: no frame screen color picture-element tube is made of color picture-element tube and pixel guide plate, the screen picture of no frame screen color picture-element tube is no frame, and screen surface is shaped as planar rectangular or face of cylinder rectangle.
2. no frame screen color picture-element tube according to claim 1, it is characterized in that: the effective display part of color picture-element tube screen is listed as square colour element by the capable n of m of orthogonal arrangement and forms, each pixel is made up of three the primary colours phosphor strips that are arranged in parallel from top to bottom, Pixel Dimensions is not less than 4mm * 4mm, extrude pit in each phosphor strip position of screen glass inner surface, the pit bottom surface is a convex surface, fluorescent powder coated in the pit bottom surface, all leave gap and coated graphite coating between phosphor strip between pixel and in the pixel, plate or stick the colour filter film homochromy respectively with this phosphor strip at the relative position of screen glass outer surface with each phosphor strip.
3. no frame screen color picture-element tube according to claim 1 is characterized in that: when adopting progressive scan mode, color picture-element tube electron beam vertical deflection magnetic field trace waveform is a m level staircase waveform; When adopting interlace mode, this trace waveform is a m level staircase waveform.
4. no frame screen color picture-element tube according to claim 1, it is characterized in that: color picture-element tube scanning beam cross section is a strip, the longitudinal size of its cross section is greater than lateral dimension, scanning beam has three, the vertically equidistant arrangement of these three electron beams, the longitudinal size of every electron beam each phosphor strip on the cross section longitudinal size at screen-contacting point place and screen is identical, and adjacent electron beam is identical with the centre-to-centre spacing of adjacent phosphor strip in the screen pixels in the centre-to-centre spacing at screen-contacting point place.
5. no frame screen color picture-element tube according to claim 1, it is characterized in that: the colour element tube electron gun has the negative electrode of three equidistant vertical arrangements, be rectangle or approximate rectangular with the hole shape on the corresponding control utmost point of each negative electrode and the intensifying ring, the longitudinal size in each hole is greater than its lateral dimension.
6. no frame screen color picture-element tube according to claim 1, it is characterized in that: color picture-element tube does not have shadow mask, adopts spherical screen, and the center of curvature of screen overlaps with the scanning beam deflection center.
7. no frame screen color picture-element tube according to claim 1, it is characterized in that: the pixel guide plate is made up of several leaded light posts, the leaded light post is transparent cylinder, its side plating opaque coating, leaded light post quantity equates with color picture-element tube screen pixels quantity, the leaded light post is according to the sequence arrangement identical with screen pixels, and each pixel on the color picture-element tube screen all has a leaded light post to aim at it.
8. no frame screen color picture-element tube according to claim 1, it is characterized in that: a face of pixel guide plate is close to the color picture-element tube screen, it is shaped as concave spherical surface, its curvature is identical with the curvature of color picture-element tube screen surface, this face claims the pixel guide plate back side, and shape and size that pixel guide plate back side leaded light post occupies part are identical with the shape and the size of the effective display part of color picture-element tube screen; Another face of pixel guide plate is planar rectangular or face of cylinder rectangle, there is not frame around it, this face claims pixel guide plate front, and when pixel guide plate and color picture-element tube were combined into no frame screen color picture-element tube, pixel guide plate front promptly became the screen of boundless frame screen color picture-element tube.
9. no frame screen color picture-element tube according to claim 1, it is characterized in that: the leaded light intercolumniation crack at the pixel guide plate back side is less, the leaded light intercolumniation crack in pixel guide plate front is bigger, the selection of gap length should make pixel guide plate frontal width and the height can be respectively greater than color picture-element tube screen position outer rim Breadth Maximum and maximum height, gap between the leaded light post is filled with flexible black material, four side bag layer of metal protective plates of pixel guide plate, and establish positioning key and location notch, from pixel guide plate front, the thickness of metal protection plate is slightly less than half of leaded light intercolumniation crack, pixel guide plate front.
10. no frame screen color picture-element tube according to claim 1, it is characterized in that: the leaded light column length difference of pixel guide plate different parts, and most of leaded light post all has bending to a certain degree, the selection of each leaded light column length and bending shape, should be able to make pixel guide plate front become the desired rectangle plane or the rectangle face of cylinder, two end faces of each leaded light post all should be perpendicular with this leaded light post central axis simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410059134 CN1734704A (en) | 2004-08-14 | 2004-08-14 | Frameless screen color pixel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410059134 CN1734704A (en) | 2004-08-14 | 2004-08-14 | Frameless screen color pixel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1734704A true CN1734704A (en) | 2006-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410059134 Pending CN1734704A (en) | 2004-08-14 | 2004-08-14 | Frameless screen color pixel tube |
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|---|---|
| CN (1) | CN1734704A (en) |
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2004
- 2004-08-14 CN CN 200410059134 patent/CN1734704A/en active Pending
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