CN101424823A - Micro-edge splicing LCD flat panel display and spliced TV wall - Google Patents
Micro-edge splicing LCD flat panel display and spliced TV wall Download PDFInfo
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- CN101424823A CN101424823A CNA2007101700256A CN200710170025A CN101424823A CN 101424823 A CN101424823 A CN 101424823A CN A2007101700256 A CNA2007101700256 A CN A2007101700256A CN 200710170025 A CN200710170025 A CN 200710170025A CN 101424823 A CN101424823 A CN 101424823A
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Abstract
The invention relates to a micro-frame splicing type LCD flat panel display and a splicing television wall which belong to the technical field of photoelectricity. When a back light source component adopts a splicing type point light source array type or linear light source array type component, a back light emitting surface can obtain a back light emitting surface of which light reaches the edge while obtaining a uniform bright field, therefore, a back light source condition is provided for the pixel display of an LCD micro-frame. An electrode layer is educed by bending 90 DEG along the circumference of the back light source (bending electrode eduction) and is protected by circumferential armored brattices (or by a part of the shell), the invention can be used as a micro-frame LCD display and is widely used for various splicing video frequency display fields (television walls).
Description
A kind of micro-edge splice type LCD flat panel display and the video wall that is spliced; Belong to field of photoelectric technology, definite saying is a kind of Mosaic screen assembly that is widely used in LCD display.
The frame of LCD display is all very big at present, can't be used for the image mosaic demand of small frame demand.
The purpose of patent of the present invention just is to overcome above-mentioned weak point, adopted the lamp box type back light source structure, that is: spliced pointolite array type or line source array type assembly, exit facet backlight is when obtaining equal uniform brightness, also can obtain the bright exit facet backlight that reaches the edge, provide the backlight condition for the micro-edge pixel of LCD shows, can be used as the micro-edge LCD display, be widely used in various splicing field of video displaying (video wall).
The characteristics of patent of the present invention are that designed drawing of electrode layer is to draw (meander electrode is drawn) along nearly 90 degree of backlight periphery bending; And by peripheral armoring coaming plate (also can be the part of housing) protection, light source adopts the compensation arrangement mode of compensation point and line, to obtain to possess simultaneously good homogeneous and the bright characteristics that reach the edge.
The key problem in technology of patent of the present invention:
The essential characteristic of its design just is:
This micro-edge splice type LCD flat panel display is made up of liquid crystal/electrode composite bed assembly, (lamp box type) backlight assembly, protecting border, back circuit member and housing etc.; Basic functional principle is: be diffused on liquid crystal/electrode composite bed assembly by (lamp box type) scattered light that backlight assembly sent, the back circuit member produces drive signal and drives liquid crystal/electrode composite bed assembly generation image by contact conductor, because what (lamp box type) backlight assembly of this structure adopted is the lamp box type back light source structure, the luminous zone can brightly reach the border of backlight, make micro-edge become possibility, can use smooth end face structure also can use nesting type structure; A kind of working mechanism of exemplary special case is: (working mechanism of lamp box type backlight) directly derived point through the diffusion of the light of exit facet backlight by scattered light that pointolite array a sent part and (derived the conventional method for making of point: be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, what just can obtain bright dipping penetrates the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the part of the light of outgoing to be split into the point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) of small intensive above-mentioned feature) the diffusion outgoing, after the reflection of peripheral end face reflection face, penetrate (the back reflective light of exit facet backlight also can be got back to exit facet outgoing backlight to improve the utilization ratio of light by end reflective layer reflects again) by exit facet backlight at boundary vicinity again; For obtaining the light field homogeneity of exit facet backlight, the pointolite array of this backlight adopts compensation dot matrix arrangement mode to arrange and be processed with peripheral end face reflection face (processing of end face reflection face can be divided into end face total reflection mode and peripheral overlay film reflection mode); Exit facet so backlight also can obtain the bright exit facet backlight that reaches the edge when obtaining equal uniform brightness, for the pixel display member of LCD provides the backlight condition; Its maximum feature just is in this micro-edge flat-panel monitor; Used lamp box structure formula back light source structure; The end face structure of this flat-panel monitor periphery promptly can be that flat configuration also can be a nested structure; Make that the neighboring area that liquid crystal/electrode composite bed assembly is contacted of 2 adjacent these displays can overlapping certain width, making has the image of a little to be interrupted when being spliced into giant-screen.
Lamp box structure formula back light source structure; The light of this structure is not that common light is poured into by the end face of light-conductive media, and the reflection mode of the dielectric layer periphery in (lamp box type) backlight assembly can be taked, and the total reflection mode also can be the plated film mode or the plated film hybrid mode that is all-trans; Light-conductive media in (lamp box type) backlight assembly, promptly can be individual layer can be the structure of multilayer also, for sandwich construction, between the multilayered medium of (lamp box type) backlight assembly, promptly can be placed with and expand the bundle scattering layer; For single layer structure, expand the bundle scattering layer and then be placed on the surface; Also can be that direct treatment media surface makes it rough surface (its roughness promptly can be uniformly, also can be that roughness heterogeneous, excessive helps the local high light zone that disperses light intensity excessive, reaches conforming purpose; The dot matrix of back light emitting source can pointolite also can be a line source; If liquid crystal/electrode composite bed assembly has enough intensity, the transparent medium of the leaded light in the lamp box structure formula back light source structure can not need, and only need put into 1 or many and expand the bundle scattering layers and get final product.
Described herein nested structure refers to; This micro-edge splice type LCD flat panel display, its periphery is processed with groove or step structure; The convex periphery of the liquid crystal of a micro-edge splice type LCD flat panel display/electrode composite bed assembly can be overlapped in after the convex periphery of liquid crystal/electrode composite bed assembly of another adjacent piece micro-edge splice type LCD flat panel display.
The periphery of above-mentioned lamp box type back light source structure has carried out the end face reflection mode to be handled and be meant: the periphery of end face promptly can be the natural surface (mainly utilizing total reflection) of smooth medium, also can be covered with reflection horizon or reflecting plate (surface and reflectance coating) at periphery; When adopting the back light source structure of 2 layers of structure, there is certain space up and down between the two layer medium plate, this moment, the periphery 2 layers of folded space layer can only use reflecting plate.
Diffusion on the backlight exit facet in the lamp box type back light source structure is derived point and is meant: a kind of conventional method for making that derives point: can be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, just can obtain out penetrate the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the light of outgoing to derive point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) diffusion outgoing from the diffusion of small intensive above-mentioned feature; In fact, diffusion is derived point and also can be existed, and utilizes the diffusion beam-expanding layer of 1 layer or multilayer also can reach identical purpose.
In case the use aforementioned display device, a kind of video wall that is spliced with micro-edge splice type LCD flat panel display; Form by polylith micro-edge splice type LCD flat panel display, support frame etc.; Its basic functional principle is: under the cooperation of support, be stitched together above-mentioned flat-panel monitor is close to each other, form a bigger display; Its feature just is: used the elementary cell of this micro-edge splice type LCD flat panel display as splicing in the described splicing video wall.
The another kind of structure of lamp box type backlight also can be; Form by the end face reflection face of pointolite array, exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line), periphery, reflection horizon, the end etc.; Basic functional principle is: directly derive point through the diffusion of the light of exit facet backlight by scattered light that pointolite array a sent part and (derive the conventional method for making of point: be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, what just can obtain bright dipping penetrates the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the part of the light of outgoing to be split into the point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) of small intensive above-mentioned feature) the diffusion outgoing, after the reflection of peripheral end face reflection face, penetrate (the back reflective light of exit facet backlight also can be got back to exit facet outgoing backlight to improve the utilization ratio of light by end reflective layer reflects again) by exit facet backlight at boundary vicinity again; For obtaining the light field homogeneity of exit facet backlight, the pointolite array of this backlight adopts compensation dot matrix arrangement mode to arrange and be processed with peripheral end face reflection face (processing of end face reflection face can be divided into end face total reflection mode and peripheral overlay film reflection mode); Exit facet so backlight also can obtain the bright exit facet backlight that reaches the edge when obtaining equal uniform brightness, for the pixel display member of LCD provides the backlight condition.
Compensation dot matrix arrangement mode is meant: pointolite array is arranged in equidistantly or staggered equidistant pointolite array; The distance on one of close border row and border approximately (being similar to) be equal to or slightly less than 1/2 of respective column spacing.
Spliced line source array type LCD (lamp box type) backlight assembly; Form by the end face reflection face of line source array, exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line), periphery, reflection horizon, the end etc.; Basic functional principle is: directly derive point through the diffusion of the light of exit facet backlight by scattered light that the line source array a sent part and (derive the conventional method for making of point: be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, what just can obtain bright dipping penetrates the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the part of the light of outgoing to be split into the point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) of small intensive above-mentioned feature) the diffusion outgoing, after the reflection of peripheral end face reflection face, penetrate (the back reflective light of exit facet backlight also can be got back to exit facet outgoing backlight to improve the utilization ratio of light by end reflective layer reflects again) by exit facet backlight at boundary vicinity again; For obtaining the light field homogeneity of exit facet backlight, the pointolite array of this backlight adopts compensation dot matrix arrangement mode to arrange and be processed with peripheral end face reflection face (processing of end face reflection face can be divided into end face total reflection mode and peripheral overlay film reflection mode); Exit facet so backlight also can obtain the bright exit facet backlight that reaches the edge when obtaining equal uniform brightness, for the pixel display member of LCD provides the backlight condition.
Compensation linear array arrangement mode is meant: the line source arrayed becomes equidistant array; The most close border line source and the distance on border approximately (being similar to) be equal to or slightly less than 1/2 of respective column spacing; Or with the fluorescent tube of each line source in addition segmentation hide, the width of covering hides the arrangement of district on fluorescent tube and will make line source become the segmentation luminous light source more than or equal to 2 times of the distance on two end distance borders of line source.
The periphery of backlight has carried out the end face reflection mode to be handled and be meant: the periphery of end face promptly can be the natural surface (mainly utilizing total reflection) of smooth medium, also can be covered with reflection horizon or reflecting plate (surface and reflectance coating) at periphery; When adopting the back light source structure of 2 layers of structure, there is certain space up and down between the two layer medium plate, this moment, the periphery 2 layers of folded space layer can only use reflecting plate, for 2 layers of structure: lamp (point/line source) is between 2 layers of medium, one deck medium plays reflex, and another layer medium plays the even derivation of light.
Diffusion on the backlight exit facet is derived point and is meant: the conventional method for making that derives point: be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium (need take this method when the surperficial projectional angle of internal light source satisfies total reflection) through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, what just can obtain bright dipping penetrates the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the part of the light of outgoing to derive point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) diffusion outgoing from the diffusion of small intensive above-mentioned feature.
Utilize above-mentioned (lamp box type) backlight assembly can manufacture the little limit of a kind of spliced backlight LCD display screen, be divided into (lamp box type) backlight assembly, compositions such as pixel formation component and the armoring encirclement of periphery plate; Basic functional principle is: come display image by the liquid crystal layer in (lamp box type) light directive pixel formation component that backlight assembly sent and the cooperation pixel formation component and the driving of electrode layer, drawing of electrode layer is by drawing (meander electrode is drawn) along nearly 90 degree of backlight periphery bending, the transparent electrode layer of close exit facet backlight, promptly can be by the bent hyaline layer of one deck as carrier, transparency electrode is coated in the surface of this carrier, utilizes carrier to bend and draw; Transparency electrode also can directly be coated on the exit facet backlight, and applies derivation naturally along the peripheral end face that becomes 90 degree with exit facet backlight; And by peripheral armoring coaming plate (also can be the part of housing); The armoring coaming plate of backlight periphery promptly can be used as independently package board, and a part that also can be used as shell is used.
Several embodiment with regard to patent of the present invention are described further patent of the present invention below in conjunction with accompanying drawing:
The spliced pointolite array of Fig. 1 (lamp box type) the backlight assembly pointolite synoptic diagram of arranging:
The spliced line source array of Fig. 2 (lamp box type) the backlight assembly line source synoptic diagram of arranging
Fig. 3 multilayered medium (lamp box type) backlight assembly structural representation
A kind of transparent electrode layer synoptic diagram of Fig. 4 (liquid crystal/electrode composite bed assembly)
The structural representation of a kind of little limit of Fig. 5 type splicing LCD display
The structural representation of the little limit of the another kind of general type of Fig. 6 type splicing LCD display
1. pointolite array
2. exit facet backlight reaches goes up reflecting surface (or reflection horizon)
3. peripheral end face reflection face (or end reflection horizon)
4. reflection horizon, the end
5. the characteristic distance value d of compensation dot matrix way
6. line source array
7. compensation linear array is arranged diagrammatic sketch
9. pixel formation component (liquid crystal/electrode composite bed)
10. the periphery plate armour is surrounded plate
11. backlight periphery extraction electrode (meander electrode is drawn)
12. housing
13. micro-edge
14. point is derived in diffusion
15.2 the space between the dielectric layer
19. the characteristic distance value c of compensation linear array mode
20. hide the district
21 covertures
22. crooked extraction electrode
24. transparent electrode layer
25 exceed the position
(26. splicing) (lamp box type) backlight assembly
28. other necessary liquid crystal display structure layer
29. liquid crystal layer
31. medium backlight
32. electronic processing part
34. back casing
35. peripheral sealing gasket covers thing
The outer exit of (40. isoplanar) electrode
41. be the transparency electrode of pixel region (layer) line (being equal to 24)
51 pointolite line space E
52 exit facet partial enlarged drawings backlight
59 clearance layers
The exit of 60 (the bent type that stretches out) electrode
72 (lamp box type) backlight assembly
73 liquid crystal/electrode composite bed assembly
74 protecting borders
75 housings
76 back circuit members
77 ladders and sunk structure
78 expand the bundle scattering layer
The outstanding position of 79 liquid crystal/electrode composite bed assembly
80 liquid crystal/electrode composite bed assembly extraction electrode
As shown in Figure 1:
Fig. 1 is divided into 2 figure: side cross-sectional, view (a1) and vertical view (b1)
Spliced pointolite array type LCD (lamp box type) backlight assembly; Form by pointolite array (1), exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2), peripheral end face (also can be reflective surface) reflecting surface (3), the end (also can be reflective surface) reflection horizon (4) etc.
Exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2), peripheral end face reflection face (3), reflection horizon, the end (4) can be same transparent mediums, also can be 2 layers of transparent mediums.When using 2 transparent mediums, between 2 layers of medium certain spacing is arranged; In such cases: peripheral end face reflection face (3) can use 1 reflecting plate, be covered on the end face of periphery of air layer folded between the peripheral end face of 2 layers of transparent medium and the 2 layers of transparent dielectric layer, two-layered medium helps utilizing the expansion bundle refraction of intermediate air layer (because of light is combed the refraction angle of the refraction angle of medium greater than optically denser medium, more help scattering of light), the homogeneity of increase light field.If single-layer medium, end face reflection face (3) is the periphery of this piece medium, under the condition greater than critical angle, will produce total reflection, for light emitting source; The total reflection of end face will account for the overwhelming majority of luminous energy.Exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2), reflection horizon, the end (4) are in same transparent dielectric layer, and peripheral end face reflection face (3) is the border of this layer transparent dielectric layer periphery just; Diffusion is derived point (14) and (is derived the conventional method for making of point: be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, what just can obtain bright dipping penetrates the bright field homogeneity; Or be covered with reflection horizon (16) on the natural surface with this emergent light, the diffusion derivation point (need not take this method when the surperficial projectional angle of internal light source does not satisfy total reflection) from small intensive above-mentioned feature that needs the light of outgoing) the diffusion outgoing is gone, and (52) are the partial enlarged drawing of exit facet backlight.
On mathematics and geometrical optics: end face reflection face (3) also is equivalent to the mirror imaging of each pointolite, the numerical value of total light intensity of the each point of exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2) should be all pointolites contribution sums of (comprising direct light source and picture light source), and the several pointolites (comprising direct light source and picture light source) that close on are depended in main contribution, and the light intensity contribution of farther pointolite can be ignored.
Angle from geometric optical imaging; Eigenwert: d (5) as shown is chosen for 1/2 of luminous point (OK/row) spacing (51) E the luminous point spacing of the imaging of end face reflection face (3) is just in time equated, each point on the whole screen all is in the equivalent scope of numerous light spot, help by battle density mode obtain uniform output backlight.
That is: d=(1/2) E
Consider reflection loss, should be slightly less than (1/2) E for suitable, reduce the brightness that reflective distance could increase by 2 secondary reflections, and increase the consistance of its Luminance Distribution apart from d.
As shown in Figure 2:
Fig. 2 is divided into 2 figure: side cross-sectional, view (a2) and vertical view (b2)
Basic structure and Fig. 1 are very similar; The kind of light source and arrange different just.
Spliced line source array type LCD (lamp box type) backlight assembly; Form by line source array (6), exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2), peripheral end face reflection face (3), reflection horizon, the end (4), diffusion derivation point (14) etc.
(57) be the partial enlarged drawing of exit facet backlight.
Each line source in the line source array (6) all has certain covering district (20) (if limited length of line source, can connect use, join domain can just be distinguished as hiding), this zone will be not luminous, the width that hides district (20) is F, shown in (53); The end points of line source apart from the distance on border be C shown in (19): to come from the distance of parallel boundary be that G is shown in (54) to linear light in addition; Distance between the line source of two adjacent parallel is: H is shown in (55).
When: the imaging rule of the level crossing of counterface reflecting surface (3) during C=(1/2) F G=(1/2) H, to identical effect be arranged with the structure of Fig. 1, thereby the surface of exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2) will obtain the effect of the same emergent light.
In fact C be slightly less than (1/2) F and G to be slightly less than (1/2) H time Uniformity of Distribution better.
As shown in Figure 3:
Fig. 3 is divided into 3 figure: side cross-sectional, view (a3) and vertical view (b3)
Basic structure and Fig. 2 are very similar; Just contain clearance layer (59).
Spliced line source array type LCD (lamp box type) backlight assembly; Form by line source array (6), exit facet backlight (also can be used as go back to the last reflection horizon of Reflect light line) (2), peripheral end face reflection face (3), reflection horizon, the end (4), diffusion derivation point (14) etc.
Multilayered medium reduces the quantity of luminous point (lamp) effectively in the inhomogeneity raising of light field, improves the utilization ratio of light, though increased certain thickness, splicing is not strict for thickness requirement with display.
Diffusion is derived point (14) and can be existed in actual applications, expansion bundle scattering layer (78) among Fig. 6 can replace diffusion to derive point (14) fully, expansion bundle scattering layer (78) among Fig. 6 can be the very thin full white coating of one deck, has the good light diffusivity, placement location is also relatively more flexible, and any position of expansion bundle scattering layer (78) optical channel in backlight assembly among Fig. 6 can be placed.
As shown in Figure 4:
Transparent electrode layer divides 2 layers up and down, every layer transparency electrode is promptly: for transparency electrode (layer) line (41) of pixel region is arranged in parallel, 2 layers electrode spread direction is orthogonal, the structural sheet that can be one deck carrier layer independent (with strip like transparent electrode) of having oneself also can directly be overlying on transparency electrode (layer) line (41) for pixel region on the light output surface of hard of (splicing) (lamp box type) backlight assembly (26) shown in Fig. 4 (a4).(41) for being the transparency electrode of pixel region (layer) line.
Draw the outside of the electrode of transparent electrode layer, can directly extend and draw; Shown in the exit (60) of 60 (the bent type that stretches out) electrode: the exit (60) of 60 (the bent type that stretches out) electrode belongs to extension and exceeds outside the screen, guides to other positions in the circuit by bending.
The exit (40) of (isoplanar) electrode shown in Fig. 4 (b4) is not extension type, needs other extraction electrode to finish electrode and draws outward.
The exit (60) of the electrode shown in Fig. 4 (a4) is to stretch out outside the display surface, and bent also transparency electrode is attached on the base material.
As shown in Figure 5:
The essential structure of this little limit of spliced backlight LCD display screen: by (splicing) (lamp box type) backlight assembly (26), pixel formation component (9) and peripheral armoring fender compositions such as (10); Basic functional principle is: light directive (liquid crystal) the pixel formation component (9) that is sent by (lamp box type) backlight assembly (26); The driving that liquid crystal layer (29) in the so-called liquid crystal pixel formation component (9) reaches at transparent electrode layer (24) comes display image, (structure of this part does not have influence to present technique to also have other necessary liquid crystal display structure layer (28) of other indispensability in (liquid crystal) pixel formation component (9), no matter be TFT or other liquid crystal mode (chromatic grating/polaroid etc.), perhaps relative configurations is also harmless; Only need it by layer encapsulation and be fixed therein and get final product, other necessary liquid crystal display structure layer (28) is meant necessary supporting layer, as antireflection (outer protection) layer, and polarization (light) layer, the various structures relevant such as transparency electrode carrier layer with the LCD imaging.Liquid crystal layer (29) is a liquid crystal material layer, and under the electric field action of 2 layers of transparent electrode layer (24) up and down, the optical property of liquid crystal layer (29) will change, more famous LCD form has TFT/ nematic etc., certain structures also has original screen panel, the relation of these and present technique is little, only need to have now and following pixel formation component (9) is attached on (splicing) (lamp box type) backlight assembly (26) and gets final product, although the mentioned pixel formation component (9) of other pixel formation component and this paper has the various forms different).
(splicing) (lamp box type) backlight assembly (26) is the assembly that satisfies this paper structure, transparent electrode layer (24) can be one deck independent structures layer and the carrier layer that has oneself, also can directly be overlying on the light output surface of the hard of (splicing) (lamp box type) backlight assembly (26), can draw along the end face bending under the special technology.
The armoring plate (10) that surrounds of periphery shields.
Backlight periphery extraction electrode (meander electrode is drawn) (11) is that the electrode relay is drawn, and is connected on the electronic processing part (32), and housing (12) is to be used to encapsulate miscellaneous part.Micro-edge (13) but the edge of protection screen curtain structure.The derivation of (lower floor) crooked extraction electrode (22) can be covered thing (35) at peripheral sealing gasket and locate to connect derivation, also can be the part that transparent electrode layer (24) prolongs.Also can connect crooked extraction electrode (22) and draw with conductive rubber for upper transparent electrode layer (24), (splicing) (lamp box type) backlight assembly (26) can be the backlight of various structures herein.。
The support power effect of splicing when contacting is worked at the position (25) that exceeds of fender (10), and contact and pressure between each screen act directly on this position, avoids other positions contact damages.
(31) being medium backlight, is transparent.Back casing (34) is an encapsulating housing, plays the protective effect to assembly.(21) be necessary coverture.
The lead-out mode of crooked extraction electrode (22), determining the size of no framing mask (13) and the technology of processing, transparent electrode layer (24) can directly extend to the side of backlight periphery, also can locate to draw the outside by deriving flexible electrode (11) in peripheral band (35); The connected mode that derives flexible electrode (11) and transparency electrode (24) can be to draw by the modes such as crimping of welding/bonding/conductive rubber slice, if transparent electrode layer (24) is directly drawn the end face at (splicing) (lamp box type) backlight assembly (26), derive flexible electrode (11) and can directly draw (as shown in Figure 5) in the end face connection.
The electrode direction of the transparency electrode on top (24) is perpendicular with the drawing direction, and its mode of drawing also is by direct bending/cover thing (35) at peripheral sealing gasket to locate to connect and draw.The periphery sealing gasket covers the peripheral position that thing (35) is installed on 4 weeks of screen.It is to be used for plaing a part on the peripheral sealing zone to seal/bonding/support certain altitude that the periphery sealing gasket covers thing (35), has certain toughness and intensity.
Armoring fender (10) shields, and its bottom is micro-protuberance slightly, is splicing in order to avoid the periphery of (liquid crystal) pixel formation component (27) is bad by crushing mutually! Armoring fender (10) can leave that some grooves make liquid crystal layer (29) and derive flexible electrode (11) can be by drawing, and armoring fender (25) also can bend to cover (not drawing among this figure) peripheral band slightly to the LCD screen direction.Electronic processing part (32) and back casing (34) part all are installed in the behind of (lamp box type) backlight assembly; they can not hinder the splicing between the display; the position (25) that exceeds of armoring fender is in contact with one another during splicing, and bears the pressure between the big portion screen body.
The electrode of electrode layer (24) is drawn also and can be drawn by the bending of carrying out nearly 90 degree along the backlight periphery; The hermetically-sealed construction of the periphery between (lamp box type) backlight assembly (26) and (liquid crystal) pixel formation component (9) is: be added with peripheral potting band (35), periphery potting band (35) plays and keeps bonding mutually between each layer structure that makes (lamp box type) backlight assembly and (liquid crystal) pixel formation component, sealing, and each layer structure also maintained a certain distance simultaneously by the solid-state stilt that mixes fixed measure: and by periphery (periphery of the pixel formation component after (lamp box type) backlight assembly and the bending) armoring coaming plate (also can be the part of housing).
As shown in Figure 6:
This micro-edge splice type LCD flat panel display is made up of liquid crystal/electrode composite bed assembly (73), (lamp box type) backlight assembly (72), protecting border (74), back circuit member (76) and housing (75) etc.; Basic functional principle is: the scattered light that is sent by (lamp box type) backlight assembly (72) is diffused on liquid crystal/electrode composite bed assembly (73), back circuit member (76) produces drive signal and drives liquid crystal/electrode composite bed assembly (73) generation image by contact conductor, because what (lamp box type) backlight assembly of this structure adopted is the lamp box type back light source structure, the luminous zone can brightly reach the border of backlight, make micro-edge become possibility, can use smooth end face structure also can use nesting type structure; Described herein nested structure refers to; This micro-edge splice type LCD flat panel display, its periphery are processed with depression and step structure (77); The recess of another piece micro-edge splice type LCD flat panel display periphery can be inserted in the outstanding position (79) of the liquid crystal of a micro-edge splice type LCD flat panel display/electrode composite bed assembly.Periphery can be overlapped after the convex periphery of the liquid crystal/electrode composite bed assembly of another adjacent piece micro-edge splice type LCD flat panel display, liquid crystal/electrode composite bed assembly extraction electrode (80) is the flexible electrode extension line.
Fig. 6 also provides a kind of simplified way that is suitable for the most: the thin layer module of the liquid crystal display of present maturation is not made change (or making a change on a small quantity), present liquid crystal/electrode composite bed assembly mostly is the 2-5 millimeter, by 2 floor height intensity glassy layers, anti-reflecting layer, optical layers, electrode layer, liquid crystal layer is formed.
In a word: (lamp box type) backlight assembly of display screen has adopted spliced pointolite array type LCD (lamp box type) backlight assembly or spliced line source array type LCD (lamp box type) backlight assembly, peripheral potting band (35) has played vital role in sealing, and sealing band (35) has played multiple action; Promptly be used as sealing/support/layer simultaneously to be connected/the drawing also and can in this band (35), finish of electrode (this zone is the borderline region of no video image, also can just with this regional outside extraction electrode) with border between the layer.
Claims (7)
1. micro-edge splice type LCD flat panel display; Form by liquid crystal/electrode composite bed assembly, backlight assembly, protecting border, back circuit member and housing etc.; Basic functional principle is: be diffused on liquid crystal/electrode composite bed assembly by the scattered light that backlight assembly sent, the back circuit member produces drive signal and drives liquid crystal/electrode composite bed assembly generation image by contact conductor, because what the backlight assembly of this structure adopted is the lamp box type back light source structure, the luminous zone can brightly reach the border of backlight, make micro-edge become possibility, can use smooth end face structure also can use nesting type structure; A kind of working mechanism of exemplary special case is: (working mechanism of lamp box type backlight) directly derived point through the diffusion of the light of exit facet backlight by scattered light that pointolite array a sent part and (derived the conventional method for making of point: be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, what just can obtain bright dipping penetrates the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the part of the light of outgoing to be split into the point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) of small intensive above-mentioned feature) the diffusion outgoing, after the reflection of peripheral end face reflection face, penetrate (the back reflective light of exit facet backlight also can be got back to exit facet outgoing backlight to improve the utilization ratio of light by end reflective layer reflects again) by exit facet backlight at boundary vicinity again; For obtaining the light field homogeneity of exit facet backlight, the pointolite array of this backlight adopts compensation dot matrix arrangement mode to arrange and be processed with peripheral end face reflection face (processing of end face reflection face can be divided into end face total reflection mode and peripheral overlay film reflection mode); Exit facet so backlight also can obtain the bright exit facet backlight that reaches the edge when obtaining equal uniform brightness, for the pixel display member of LCD provides the backlight condition; Its feature just is: in this micro-edge flat-panel monitor; Used lamp box structure formula back light source structure; The end face structure of this flat-panel monitor periphery promptly can be that flat configuration also can be a nested structure; Make that the neighboring area that liquid crystal/electrode composite bed assembly is contacted of 2 adjacent these displays can overlapping certain width, making has the image of a little to be interrupted when being spliced into giant-screen.
2 micro-edge splice type LCD flat panel displays as claimed in claim 1, its feature just is: described wherein a kind of lamp box structure formula back light source structure; The reflection mode of the dielectric layer periphery in backlight assembly can be taked, and the total reflection mode also can be the plated film mode or the plated film hybrid mode that is all-trans; Light-conductive media in the backlight assembly, promptly can be individual layer can be the structure of multilayer also, for sandwich construction, between the multilayered medium of backlight assembly, promptly can be placed with and expand the bundle scattering layer; For single layer structure, expand the bundle scattering layer and then be placed on the surface; Also can be that direct treatment media surface makes it rough surface (its roughness promptly can be uniformly, also can be that roughness heterogeneous, excessive helps the local high light zone that disperses light intensity excessive, reaches conforming purpose; The dot matrix of back light emitting source can pointolite also can be a line source; If liquid crystal/electrode composite bed assembly has enough intensity, the transparent medium of the leaded light in the lamp box structure formula back light source structure can not need, and only need put into 1 or many and expand the bundle scattering layers and get final product.
3. micro-edge splice type LCD flat panel display as claimed in claim 1, its feature just is that described nested structure refers to; This micro-edge splice type LCD flat panel display, its periphery is processed with groove or step structure; The convex periphery of the liquid crystal of a micro-edge splice type LCD flat panel display/electrode composite bed assembly can be overlapped in after the convex periphery of liquid crystal/electrode composite bed assembly of another adjacent piece micro-edge splice type LCD flat panel display.
4. spliced pointolite formation LCD backlight as claimed in claim 1, its feature just is: describedly adopted compensation dot matrix arrangement mode to be meant: pointolite array is arranged in equidistantly or staggered equidistant pointolite array; The distance on one of close border row and border approximately (being similar to) be equal to or slightly less than 1/2 of respective column spacing.
5. spliced pointolite array type LCD backlight as claimed in claim 1, its feature just is: describedly adopted compensation linear array arrangement mode to be meant: the line source arrayed becomes equidistant array; The most close border line source and the distance on border approximately (being similar to) be equal to or slightly less than 1/2 of respective column spacing; Or with the fluorescent tube of each line source in addition segmentation hide, the width of covering hides the arrangement of district on fluorescent tube and will make line source become the segmentation luminous light source more than or equal to 2 times of the distance on two end distance borders of line source.
6. lamp box type back light source structure as claimed in claim 1, its feature just is: the periphery of described backlight has carried out the end face reflection mode to be handled and be meant: the periphery of end face promptly can be the natural surface (mainly utilizing total reflection) of smooth medium, also can be covered with reflection horizon or reflecting plate (surface and reflectance coating) at periphery; When adopting the back light source structure of 2 layers of structure, there is certain space up and down between the two layer medium plate, this moment, the periphery 2 layers of folded space layer can only use reflecting plate.
7. lamp box type back light source structure as claimed in claim 1, its feature just is: diffusion on the described backlight exit facet is derived point and is meant: a kind of conventional method for making that derives point: can be that natural surface with this emergent light partly processes numerous small points and the fine structure of each point all is by more small rough and uneven in surface contexture, make light scatter the surface through little part, all the other light return medium through the total reflection of natural surface part, calculate the dutycycle (exitance) of change (small scraggly surface area accounts for the area proportion of natural surface) from the mathematics easily, just can obtain out penetrate the bright field homogeneity; Or be covered with the reflection horizon on the natural surface with this emergent light, need the light of outgoing to derive point (when the surperficial projectional angle of internal light source does not satisfy total reflection, need not take this method) diffusion outgoing from the diffusion of small intensive above-mentioned feature; In fact, diffusion is derived point and also can be existed, and utilizes the diffusion beam-expanding layer of 1 layer or multilayer also can reach identical purpose.
8. video wall that is spliced with micro-edge splice type LCD flat panel display; Form by polylith micro-edge splice type LCD flat panel display, support frame etc.; Its basic functional principle is: under the cooperation of support, be stitched together above-mentioned flat-panel monitor is close to each other, form a bigger display; Its feature just is: used the elementary cell of this micro-edge splice type LCD flat panel display as splicing in the described splicing video wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101700256A CN101424823A (en) | 2007-10-31 | 2007-10-31 | Micro-edge splicing LCD flat panel display and spliced TV wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101700256A CN101424823A (en) | 2007-10-31 | 2007-10-31 | Micro-edge splicing LCD flat panel display and spliced TV wall |
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| CN101424823A true CN101424823A (en) | 2009-05-06 |
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|---|---|---|---|
| CNA2007101700256A Pending CN101424823A (en) | 2007-10-31 | 2007-10-31 | Micro-edge splicing LCD flat panel display and spliced TV wall |
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