CN2454788Y - Micro display element - Google Patents

Abstract

A micro display device comprises a control chip, a driving circuit and a plurality of metal mirror reflection gate elements, wherein the metal mirror reflection gate elements, the driving circuit and the control chip form a layer-by-layer combined structure from top to bottom in sequence. The driving circuit is controlled by the display control signal of the control chip to drive each metal mirror reflection gate device to control the on/off of the reflection light source. Pixel elements for adjustment are respectively and equally arranged on the periphery of the metal mirror reflection door element along the horizontal and vertical axial directions. When the optical light combination unit is calibrated, the pixel elements for adjustment can provide displacement adjustment in horizontal and vertical axial directions, so that R, G, B three projection lights can be accurately adjusted to be in a coincident state.

Description

Micro display element

The utility model relates to a kind of Micro display element, relates in particular to a kind of electronic projection display device that is used for, and can be along the structure person of horizontal axis and vertical axial displacement adjustment pixel.

Miniscope (MICRO-DISPLAY) is widely used in such as in the electric projection display apparatus such as liquid crystal projector, computer monitor, projection TV set.Its significant feature is the raw video that produces optical projection, and opens (ON) or close (OFF) control by the reflection function between each pixel in the mirror surface.Control reflection mode can be divided into directly reflective and penetration.As in the direct reflection type structure kenel of DMD, can directly light be reflected, and in penetrating the LCOS structure kenel of kenel, by the screening of control liquid crystal light penetration, logical effect, show, cooperate the optical projection mechanism that forms by projection source and lens set on the optics again, this raw video can be exaggerated be projeced on screen or the display screen.

In Fig. 6, shown the optics beam split operating process of normal miniature display in the optical projection operating process simply.Light source A throws three polarisation spectroscope A1, A2 and A3 respectively, isolates respectively then by three kinds of basic luminaire that color constitutes such as red (R), green (G) and blue (B) light.A prism C (dichroic) who is used for closing light is placed appropriate location between three polarisation spectroscope A1, A2 and the A3.In Fig. 6, the direction of arrow only is used for representing the projecting direction of light source A, is not the path of carrying out of true light.And, three kinds of monochromatic light of red, green, blue are projected to respectively on miniscope B1, B2 and the B3, on behalf of each pixel reflects of three kinds of coloured light of raw video red, green, blue, they whether reach the projection control element of brightness size respectively, and can be subjected to software or other electronic circuit hardware controls to come imaging.

In addition, in Fig. 7, shown simply that also the normal miniature display closes the light operating process in the optical manipulation process.In monochromatic light beam split through above-mentioned Fig. 6, and three kinds of monochromatic light of red, green, blue are projeced into respectively after its corresponding respectively miniscope B1, B2 and B3, by the mirror surface reflection control of miniscope B1, B2 and B3, reflect show image exactly.And then pass through another polarisation spectroscope C1, C2 and C3 respectively, with three kinds of projections of red, green, blue image difference directive prism C.The direction of arrow shown in Figure 7 also only is used for the light action that closes with reference to the red, green, blue three, is not the actual travel path of light.And the image of three kinds of coloured light of red, green, blue is gathered on screen or the projection screen after closing light through prism C, overlaps the image that forms single color.

Yet the normal miniature display must pass through assembling, the adjustment of optics and calibrate three steps in the operating process of closing light and image reorganization of carrying out above-mentioned Fig. 7.Therefore, must suitably adjust the video picture and the optical module (as the reflecting optics assembly) of miniscope, be projected to screen or projection screen, form image so that three kinds of monochromatic projection images of red, green, blue can overlap.But it is red when being responsible for, green, the miniscope B1 of blue three kinds of coloured light projection, B2 and B3 assemble in projection process, when adjusting and calibrating, because image can be subjected to the influence of three-dimensional space axial dipole field in projection process, produce respectively the plane on, down, a left side, right planar offset and inclination, upset waits the delivery error factor, again because miniscope B1, mirror surface number of pixels on B2 and the B3 is to cooperate the image projecting size and design, its quantity is changeless basically, for example: image analytic degree XGA is 1024 * 768 pixels, SXGA is that 1280 * 1024 pixels and UXGA are 1600 * 1200 pixels, thereby cause when adjusting and calibrate, for making the image inregister, the mobile miniscope B1 of essential adjustment, the position of B2 or B3, or adjust the optical mirror slip group of each projection, therefore, make this display in the adjustment and calibration of projection image, quite waste time and energy, particularly in the skew adjustment and calibration of horizontal axis (X-axis) and vertical axial (Y-axis), if not experienced person is difficult for finishing.Thereby having a strong impact on the assembly of above-mentioned electric projection equipment and make efficient, be unfavorable for the utilization on the industry, is the required utmost point of present miniscope problem to be improved in fact.

Fundamental purpose of the present utility model is, a kind of Micro display element is provided, in this Micro display element, periphery at the metallic mirror surface reflection gating element that is used for the projection light reflection, be respectively equipped with several along horizontal axis and vertical axial and adjust and use pixel element, so that horizontal axis and the vertical axial position adjustment of projection image when adjusting.

A purpose more of the present utility model is, a kind of Micro display element is provided, the adjustment of its horizontal axis and vertical axial with pixel element when doing level and vertical axial displacement for image and adjust, can become more simple and convenient by simple software or the adjustment of electronic circuit signal controlling, can make miniscope time and labour saving and be convenient to the industry utilization more on image overlap to be adjusted.

In order to achieve the above object, Micro display element of the present utility model comprises a control wafer, driving circuit and number of metal direct reflection gating element, metallic mirror surface reflection gating element, driving circuit and control wafer from top to bottom form the level unitized construction in regular turn, drive the control of opening, break that each metallic mirror surface reflection gating element is made reflection source so that the display control signal of the controlled wafer of driving circuit is controlled; And, circumferential perimeter at metallic mirror surface reflection gating element, axially reach vertical axial along planar horizontal and set up several adjustment pixel elements with reciprocity quantity respectively, be used for when the Micro display element of three kinds of projection lights of corresponding red, green, blue when optics closes light assembling calibration, can provide the displacement deviation of sufficient image horizontal axis and vertical axial to calibrate setting range with pixel element by this adjustment, be able to be adjusted into easily rapidly coincidence status in order to do being convenient to three monochromatic images of this red, green, blue that throws.

In order to help further to understand detailed construction of the present utility model and application state, enumerate some embodiment below in conjunction with each accompanying drawing, wherein:

Fig. 1 is the three-dimensional appearance structural drawing of the utility model Micro display element, shows the projection situation of monochromatic light image;

Fig. 2 is the cut-open view of the utility model Micro display element;

Fig. 3 A is the cutaway view Amplified image of part 2A among Fig. 2;

Fig. 3 B is the cutaway view Amplified image of another embodiment of part 2A among Fig. 2;

Fig. 4 is a vertical view, shows the utility model Micro display element when projection shows raw video, the state of metallic mirror surface reflection gating element;

Fig. 5 is one synoptic diagram for the utility model Micro display element overlaps the projection image of R, G, B three coloured light;

Fig. 6 carries out the rough schematic of light-splitting processing in the image projecting process for the normal miniature display;

Fig. 7 closes the rough schematic of optical processing for the normal miniature display in the image projecting process.

At first with reference to Fig. 1-Fig. 3.Micro display element of the present utility model is all represented to number 100 in following each accompanying drawing.Micro display element 100 comprises a control wafer 10, and it is made of the integrated circuit of control video picture, can link other electronic circuit apparatus (not shown), to obtain the information of display image.Above control wafer 10, link one drive circuit 20, it is made of the circuit that drives the LCD liquid crystal display, constitutes one with control wafer 10.In addition, above driving circuit 20, be provided with the metallic mirror surface reflection gating element 30 of some series, they are subjected to the drive controlling of driving circuit 20, finish the reflection Presentation Function that opens (ON) or disconnected (OFF).In this meaning is each pixel of the raw video of representative institute desire projection, and the number of its quantity is not limited to the quantity shown in Fig. 1 in the utility model or other relevant drawings.Metallic mirror surface reflection gating element 30 also is combined into one with driving circuit 20.

Fig. 3 A illustration the structure of each metallic mirror surface reflection gating element 30 in the Micro display element 100 of above-mentioned the utility model, this structure is the reflection Display Modes.Fig. 3 A is that label is the cutaway view Amplified image of the part of 2A among Fig. 2, from top to bottom comprises mirror protection layer 31, ITO electrode layer 32, liquid crystal layer 33, metal electrode layer 34 and wafer 35 successively.Mirror protection layer 31 is to constitute with the transparent material of clear glass or other equivalent natures; wafer 35 links together with driving circuit 20; in order to accept the display driver control of driving circuit 20; and make ITO electrode layer 32 produce relative electrical action, force in-between liquid crystal layer 33 to be the state that (ON) or reflection blocking (OFF) are opened in reflection.That is to say that ITO electrode layer 32 is for the light reflection is opened, disconnected control door-plate, and metal electrode layer 34 is the light reflected bottom plate.When whole metallic mirror surface reflection gating element 30 is subjected to the monochromatic light projection, 30 common raw videos that constitute of each metallic mirror surface reflection gating element can be done relative image projection action.In other words, unlatching by these metallic mirror surfaces reflection gating elements 30 (being each pixel) or blocking light reflection function constitute and show raw video.

Referring again to Fig. 3 B, this figure is another structure embodiment of metallic mirror surface reflection gating element 30 in the utility model Micro display element 100, and it is the penetration Display Modes.Fig. 3 B also is that corresponding diagram 2 labels are the cutaway view Amplified image of the part of 2A.Its structure from top to bottom comprise successively mirror protection layer 31 ', ITO electrode layer 32 ', liquid crystal layer 33 ', ITO electrode layer 34 ' and wafer 35 '.Wafer 35 ' link together with driving circuit 20, in order to accept the display driver control of driving circuit 20, and make ITO electrode layer 32 ' with 34 ' produce the identical electrical action that opens or closes, force in-between liquid crystal layer 33 ' the be state of light penetration (ON) or light blocking (OFF).That is to say, ITO electrode layer 32 by being positioned at the upper end ' and be positioned at the ITO electrode layer 34 of lower end ' jointly for light penetration opens, the disconnected door-plate of controlling, make whole metallic mirror surface reflection gating element 30 when being subjected to the monochromatic light projection, be able to 30 common raw videos that constitute of each metallic mirror surface reflection gating element are done relative image projection action.In other words, unlatching by these metallic mirror surfaces reflection gating elements 30 (being each pixel) or blocking light penetration function constitute and show raw video.

In the periphery of the metallic mirror surface of above-mentioned Micro display element 100 reflection gating element 30, along the horizontal axis (X-axis) and the vertical axial (Y-axis) on its plane, the adjustment that is respectively equipped with several series is with pixel element 40.Its structure is identical with the metallic mirror surface reflection gating element 30 shown in Fig. 3 A and Fig. 3 B fully, and quantity and the block number that this horizontal axis (X-axis) and vertical axial (Y-axis) increase also is regardless of limit.But,, in relevant drawings of the present utility model (as shown in Figure 4), be used as the embodiment explanation to increase the quadruple amount as cooperating signal or address bus transmission structure usually in order to cooperate the digital drive signal transmission of driving circuit 20.The below of adjusting with pixel element 40 also links with driving circuit 20, controlled by the display driver of driving circuit 20, unlatching or blocking function in the time of also can doing the image projection.Its detailed action specification will be held back Chen Ming hereinafter to have detailed explanation.

Shown in Fig. 1, Fig. 2, Fig. 3 A and Fig. 3 B, Micro display element 100 of the present utility model is when the image projecting operational motion of reality, as shown in Figure 1, be that elder generation sees through optical module 200 generation monochromatic sources by light source A ', the metallic mirror surface reflection gating element 30 and the adjustment that project the top of the utility model Micro display element 100 are then used on the pixel element 40.By each be used for imaging metallic mirror surface reflection gating element 30 and adjust with the reflective projection of pixel element 40 and open or blocking function is controlled, the image of its reflection can be projeced on the screen 400 by an optical module 300 again, thereby form monochromatic projection image.Above-mentioned optical module 200 and 300 is conventional assembly, and its detailed structure is seldom described.

Please refer to Fig. 4, the utility model Micro display element 100 as shown in Figure 1-Figure 3, its each metallic mirror surface reflection gating element 30 and peripheral adjustment pixel element 40 can form raw video jointly by above-mentioned projection unlatching or blocking function.By control wafer illustrated in figures 1 and 2 10 and driving circuit 20 both, come each metallic reflection gating element 30 of drive controlling to do the imaging of raw video with electric signal jointly, because the standard raw video images in the scope of metallic reflection gating element 30, it takes the normal place of monochromatic light raw video.And when the light coincidence is desired to make a match by the projection image of three kinds of coloured light of red, green, blue, if need along horizontal axis (X-axis) or vertical axial (Y-axis) translation image, then can be by the drive controlling of control wafer 10 and driving circuit 20, make the image of original video picture in metallic mirror surface reflection gating element 30 scopes, along horizontal axis or vertical axial displacement, make the some of raw video, fall into some and adjust with pixel element 40.The displacement of this raw video is to reach by the hardware electric signal of control wafer 10 and driving circuit 20 or by Control Software drive controlling wafer 10 and driving circuit 20.

Fig. 5 has shown that 100 couples of red (R) shown in Figure 4 of the utility model Micro display element, green (G), blue (B) three monochromatic raw videos close the state of light and image coincidence adjustment.For convenience of explanation, represent the first projection image, the second projection image and the 3rd projection image respectively with numbering D1, D2 and D3 especially, and represent resultant image with label D4.In operation, the Micro display element 100 with Three Represents red, green, blue projection image is fixed on the optics machine (OPTICAL ENGINE, not shown) earlier.To represent the second projection image D2 of green glow to fix then, as the graphics standard position that overlaps.That is, with representing the raw video locking of Micro display element 100 of green glow image motionless, its reason is that green glow is a key light, it measures the strongest.At this moment, be with the second projection image D2 be transferred to focal length, brightness is appropriate state, and its launching position is positioned at the middle position of screen shown in Figure 1 400.

After the above-mentioned second projection image D2 is fixed, adjust the first projection image D1 and the 3rd projection image D2 successively, they are overlapped to the second image D2.At this moment, because being used for the optical module 300 of projection in each Micro display element 100 exists difference on characteristic and the optical parametric, so the first projection image D1, the second projection image D2 and the 3rd projection image D3 are when overlapping, its projection overlaps the position and has a little deviation, and error is in several pixels.When needs are done horizontal axis or vertical axial displacement adjustment with the projection image, as the first projection image D1 and the 3rd projection image D3, then represent the Micro display element 100 of ruddiness or blue light to provide the horizontal axis of its projection image or the displacement function and the scope of vertical axial with pixel element 40 by the adjustment of above-mentioned metallic mirror surface reflection gating element 30 peripheries, the first projection image D1 and the 3rd projection image D3 can be made things convenient for promptly overlap fully, become resultant image D4 with the second projection image D2.Above-mentioned blurring adjustment process is to finish by the driving adjustment of the driving adjustment of Control Software or electric signal, so suitable time and labour saving, do not need veteran professional to finish easily, and help the element assembly and the industry utilization thereof of electric projection display apparatus.

Creative spirit of the present utility model is, changes in the most simple and convenient and little amplitude under the prerequisite of miniscope structure, and blurring setting range and the structure of miniscope when R, G, the adjustment of B three look actinic lights is provided.And, can be written into or electric signal drives the light that closes of reaching three coloured light projections image and overlaps by simple Control Software, thereby make projecting subassembly make the industrial utilization that can reach the time and labour saving in the assembling.

Above-mentioned Fig. 1-Micro display element 100 of the present utility model shown in Figure 5, wherein explanation that is disclosed and accompanying drawing are not a corner of the preferred embodiment that discloses for ease of the technology contents of illustrating the utility model and technological means, not thereby arrest its category of limit.And all are modified, change at structural detail of the present utility model such as, or the equivalent substitution of element, displacement, and when not breaking away from creative spirit of the present utility model and category, its scope will be defined by following claims.

Claims (6)

1. A micro display element is characterized in that it includes a control chip and a drive circuit, the drive circuit is combined on the control chip, and is controlled by the display of the control chip; several series of metal mirror reflective gate elements, which are located on the On the drive circuit, driven by the drive circuit, each pixel of the original image display and projected image is turned on or blocked; and several series of pixel elements for adjustment, which reflect the gate along the metal mirror surface The horizontal axis and vertical axis setting on the periphery of the component are also driven and controlled by the drive circuit, which is used for the opening or blocking function of each pixel of the projected image, so that when the projected image is adjusted, the image on the horizontal axis and vertical axis can be provided The range of pixel shift adjustment. 2. The micro-display element according to claim 1, wherein each of the metal mirror reflection gate element and the adjustment pixel element comprises a mirror protection layer, an ITO electrode layer, a liquid crystal layer, a metal electrode layer and a wafer. 3. The micro display element according to claim 2, characterized in that, said mirror protection layer, ITO electrode layer, liquid crystal layer, metal electrode layer and wafer are sequentially composed from top to bottom. 4. The micro display element according to claim 1, wherein each of the metal mirror reflective gate element and the pixel element for adjustment comprises a mirror protection layer, two ITO electrode layers, a liquid crystal layer and a chip. 5. The micro-display element according to claim 4, wherein the mirror protection layer, the ITO electrode layer, the liquid crystal layer, the ITO electrode layer, and the wafer are sequentially composed from top to bottom. 6. The micro display element according to claim 1, wherein the number of additions of the adjustment pixel elements along the horizontal axis (X axis) and the vertical axis (Y axis) is a multiple of four.

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