CN100555035C - The interconnection structure of display device and projection display apparatus - Google Patents
The interconnection structure of display device and projection display apparatus Download PDFInfo
- Publication number
- CN100555035C CN100555035C CNB2007101288938A CN200710128893A CN100555035C CN 100555035 C CN100555035 C CN 100555035C CN B2007101288938 A CNB2007101288938 A CN B2007101288938A CN 200710128893 A CN200710128893 A CN 200710128893A CN 100555035 C CN100555035 C CN 100555035C
- Authority
- CN
- China
- Prior art keywords
- video data
- signal wire
- pixel
- display device
- inductance element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The interconnection structure that is used for display device comprises driver that video data is provided and the interconnection material with the many signal line that are arranged in parallel, and driver provides video data by signal wire.Be used for the interconnection structure of display device, rearrange the signal wire that transmits video data via interconnection material, thereby make via the video data of the signal wire that in interconnection material, has bigger inductance element influence and alternately offered the neighbor or the pixel groups of display device via the video data of signal wire with smaller inductance element influence.As a result, according to the brightness display image that is suitable for video data.
Description
The cross reference of related application
The present invention comprises the theme of the Japanese patent application JP2006-336059 that submits to Jap.P. office in the Japanese patent application JP2006-009004 that submitted to Jap.P. office on January 17th, 2006 and on Dec 13rd, 2006, at this in conjunction with its full content as a reference.
Technical field
The present invention relates to a kind of interconnection structure that is used for the outside display device that links to each other of driver.The invention still further relates to a kind of projection display apparatus (optical projection system) that this interconnection structure is applied to optical modulation device.
Background technology
In recent years, focus on the reflection-type device that can reduce size, improve resolution and demonstrate high light utilization rate more, and the reflection-type device is in fact as having more high resolving power, smaller szie and the display device of high brightness more in the optical projection system.The reflection-type device is implying the active type reflection LCD device that comprises glass substrate, on glass substrate, form transparency electrode in the face of ground with the driving substrate that forms by silicon substrate, on this silicon substrate, be formed with the cmos semiconductor circuit, between two substrates, inject liquid crystal.Pixel electrode is placed on the driving substrate with matrix form, is used for reflected light and to liquid crystal applied voltages.Pixel electrode generally includes and comprises the metal material of aluminium as principal ingredient, and it is used for LSI and handles.
In reflection LCD device, by video data (signal voltage) is write pixel electrode, and between transparency electrode and pixel electrode, produce potential difference (PD), thereby to liquid crystal applied voltages.In this, the optical characteristics of liquid crystal changes along with the potential difference (PD) between the electrode, and the brightness of liquid crystal changes by modulating the incident light.Usually, to pixel electrode write be by control on the pixel-driving circuit on-off element and from four angles, viewing area any one carried out in proper order, this pixel-driving circuit is on the intersection point between the data line of the gate line of line direction and column direction.
The driver IC that produces video data externally links to each other with reflection LCD device, is used to reduce the size of optical projection system.In addition, provide video data by flexible print circuit (FPC) from driver IC.
The signal voltage that writes pixel electrode keeps a frame (for example, about 16.7ms) by the auxiliary capacitor in the pixel-driving circuit, writes beginning up to next time.In addition, may damage device owing to apply dc voltage, so alternately apply the plus or minus voltage of equivalent for each frame to liquid crystal to liquid crystal.The organic or inorganic material is used for location (alignment) layer of reflection LCD device.Be desirably in reflection LCD device and use and to realize higher brightness, higher resolution and the sharpness of Geng Gao in the optical projection system of this reflection LCD device.
In such reflection LCD device, the video data that driver IC provides by flexible print circuit be transmitted and write pixel electrode with initial arrangement (for example, referring in the patent disclosure of Japanese unexamined 2005-189758 number [0008] to [0016] section, [0052] to [0058] section, Fig. 9, Fig. 1).
As an example, the transmission of the display device in the correlation technique will be described with reference to the reflection LCD device with dot sequency drive system.In the dot sequency drive system, by sequentially to n bar data line provide video data, simultaneously sequentially be written at every data line raster polar curve on the gate line adjacent n pixel as the unit (n be 12 or bigger integer).Write fashionablely to last column data line when finishing, repeat to write, scan the next line gate line simultaneously with similarly-ordered.
Fig. 1 shows and is used for the figure of an example of interconnection structure that correlation technique has the reflection LCD device of dot sequency drive system.In this reflection LCD device, the gate line X of line direction and the data line Y of column direction are arranged on the driving substrate 71 with matrix form, and pixel (pixel-driving circuit and pixel electrode) P is arranged on the intersection point of gate line X and data line Y.
Peripheral driver IC 61 has substrate 62, and it is different from the substrate that uses in reflection LCD device.This substrate 62 links to each other with driving substrate 71 in the reflection LCD device by FPC (flexible print circuit) 51.Video data D1 is to D5 (signal voltage), and each is used for five pixels, and these video datas are exported to 61e from the output terminal 61a of driver IC 61 respectively.Video data D1 is sent to FPC 51 by the five signal line 62a that form to 62e to D5 on substrate 62, and offers driving substrate 71 by the five signal line 51a that are arranged in parallel on FPC51 to 51e.
Provide control signal C (not shown) from the external definition control circuit to driving substrate 71 by FPC (flexible print circuit) 51.
Five signal line 71a are formed on the driving substrate 71 to 71e, are used to transmit the video data D1 that provides to driving substrate 71 to D5.Signal wire 71a is arranged in parallel to 71e, and video data D1 is sent to D5 has the datawire driver 73 to the 51e aligned identical with the signal wire 51a of FPC 51.Whole video data D1 are offered in the datawire driver 73 four switches 74 to 77 of conversion respectively to D5.
The control signal C that offers driving substrate 71 is provided for gate line driver 79 and datawire driver 73.
Shown in arrow among the figure, below content show: in the viewing area from low side to high-end raster polar curve X and the viewing area from right to left side under the situation of translation data line Y, the operation of dot sequency drive system.
At first, to the right five data line Y provide video data D1 to D5 by utilizing ON-OFF control circuit 78 in the datawire driver 73 to connect switches 77 separately, the minimum row of while gate line driver 79 raster polar curve X.Therefore, adjacent five pixel P on right side are written in the minimum row.
Subsequently, connect switch 76 and provide video data D1 to D5 by utilizing the ON-OFF control circuit 78 in the datawire driver 73 separately, simultaneously the minimum row of gate line driver 79 raster polar curves to five data line Y that the center slightly takes over.Therefore, adjacent five pixel P that the center slightly takes in the minimum row are written into.
By utilizing in the datawire driver 73 ON-OFF control circuit 78 to connect switches 75 and provide video data D1 to D5 separately to five data line Y that slightly take back in the center, the minimum row of while gate line driver 79 raster polar curves.Therefore, adjacent five pixel P that in the minimum row slightly take back in the center are written into.
To the left five data line Y provide video data D1 to D5 by utilizing ON-OFF control circuit 78 in the datawire driver 73 to connect switches 74 separately, the minimum row of while gate line driver 79 raster polar curves.Therefore, adjacent five pixel P in left side are written in the minimum row.
After writing the pixel of minimum row, with the second row gate line of similar order scanning from minimum row beginning.Repeat to write with similar order, simultaneously direction line-by-line ground raster polar curve to make progress.
Summary of the invention
Many signal line in the flexible print circuit comprise inductance element, and each inductance element is all because the electric current that flows out from driver IC produces back electromotive force.If the length of flexible print circuit is tens millimeters, thereby then the influence of inductance element just becomes and can not ignore very greatly.
If use the rigidity multilager base plate, then utilize whole one deck inductance element to be reduced equably to the influence of each signal wire as stratum (be used for signal ground, that is, the return circuit of electric current).
Yet,, limited quantity usually as the ground wire of signal ground if use flexible print circuit.For example, only provide two ground wires, or only provide three ground wires at the center of two ends and flexible print circuit at two ends.Therefore, depend on the position with respect to ground wire, inductance element can be different to the influence of each signal wire, and perhaps Ying Xiang conspicuousness can gradually change between the adjacent signals line.
The FPC 51 that Fig. 2 A shows in Fig. 1 comprises under the situation of two ground wires that are positioned at two ends that the expression inductance element is to the distribution of each signal wire 51a to the conspicuousness of the influence of 51e.Inductance element becomes big to the influence of signal wire gradually with signal wire 51a, the 51b of more close FPC 51 end positions and the order of 51c; And the influence to signal wire diminishes gradually with signal wire 51c, the 51d of the end position of more close FPC 51 and the order of 51e.Therefore, this distribution comprises a positive peak.
Shown in Fig. 2 B because the inconsistent influence of inductance element, the expression that distributes offer adjacent five pixel P1 to the video data D1 of P5 to D5, as described below:
The level of voltage increases gradually with the video data D1 of the pixel P1 that offers left end, the order of video data D3 that offers the video data D2 of the pixel P2 that begins the second place from the left side and offer the pixel P3 at center; And
The level of voltage with the video data D3 that offers pixel P3, offer from right-hand member and begin the video data D4 of pixel P4 of the second place and the order of video data D5 that offers the pixel P5 of right-hand member reduces gradually.Therefore, this distribution comprises a positive peak.
In utilizing the reflection LCD device of analog drive system, brightness changes with the variation level of video data.Therefore, as shown in Figure 3, observe the irregularity in brightness pattern with the vertical stripes that repeats bright or dark brightness, each striped all comprises the horizontal width of five pixels.
Fig. 1 shows the example that five pixels is write as the unit for illustrated convenience; Yet in fact, in reflection LCD device, can write more substantial pixel (24 for example adjacent pixels) as the unit with dot sequency drive system.As a result, can observe and have the more irregularity in brightness pattern in long spacing cycle (that is, low spatial frequency), this cycle demonstrates the horizontal width of 24 pixels as the unit.This irregularity in brightness pattern with low spatial frequency can by eye-observation to.
In recent years, because size and the minimizing of weight and the integrated level higher to its parts of flexible print circuit, the frequency that has presented video data improved and distance between the signal wire reduces.Therefore, inductance element may be a factor of damaging picture quality to the inconsistent influence of this flexible print circuit.Under the long situation of the current driving ability of driver IC length low and flexible print circuit, it is obvious that this inconsistency becomes.From cost consideration, do not wish to increase the current driving ability of driver IC.In addition, because the performance that driver IC increases, the restriction of some position of existence on connector and driving substrate that the flexible print circuit of reflection LCD device links to each other.Therefore, be difficult in flexible print circuit, use short interconnection.
It should be noted, because the inconsistent influence of inductance element, uneven brightness is not only for reflection LCD device, and, all be a common problem for the display device of analog drive system (for example liquid crystal indicator, field-causing electron emission show (FED) device, organic light-emitting display device and inorganic light-emitting display device).Further, provide PAM (pulse amplitude modulation) display device of video data if use to it, then brightness changes with the variation level of video data, therefore still keeps same problem.
In addition, when use has the interconnection material of many signal wires that are arranged in parallel, can in interconnection material (for example, flexible flat cable (FFC)) rather than flexible print circuit, observe the inconsistent influence of inductance element.
According to embodiments of the invention, provide to display device under the situation of video data via interconnection material at driver with the many signal line that are arranged in parallel, do not change the length of the current driving ability or the interconnection material of driver, human eye does not almost observe or can't observe the irregularity in brightness that the inconsistent influence owing to inductance element in the interconnection material causes.
According to embodiments of the invention, the interconnection structure that is used for display device comprises the interconnection material with many signal wires that are arranged in parallel, and by these signal wires, can provide video data from driver.In addition, according to this embodiment of the invention, display device can show the image with the brightness that is suitable for video data, the interconnection structure that is used for this display device comprises signal wire, video data can transmit from signal wire by interconnection material, described signal wire is rearranged, thereby makes via the video data of the signal wire that has the influence of bigger inductance element in interconnection material and alternately offered the neighbor or the pixel groups of display device via the video data of the signal wire with smaller inductance element influence.
In addition, in interconnection structure according to the embodiment of the invention, rearrange the many signal line that are used for transmitting video data, alternately offered neighbor or pixel groups thereby make via the video data of the signal wire that in interconnection material, has bigger inductance element influence with via the video data of the signal wire that has smaller inductance element influence in the interconnection material via interconnection.
Therefore, the distribution that offers the video data (signal voltage) of a plurality of neighbors or a plurality of sets of adjacent pixels does not show as the gradual change of voltage level shown in Fig. 2 B, and shows as the increase or the reduction of alternately repeated voltage level on each pixel or each pixel groups.
Therefore, do not observe the irregularity in brightness pattern that demonstrates as the horizontal width of the whole pixel of unit, as shown in Figure 3, but can observe on each pixel or each pixel groups alternately and repeat to present the irregularity in brightness pattern of bright or dark brightness.Especially, spatial frequency can be elevated to such degree, and human eye does not almost observe maybe can't observe this spatial frequency.
The result, the irregularity in brightness that presents owing to the inconsistent influence of the inductance element in the interconnection material can reduce to a kind of like this degree, promptly, at the current driving ability that does not change driver or shorten under the situation of length of interconnection material, human eye just almost observes maybe can't not observe irregularity in brightness.
According to this embodiment of the invention, provide a kind of projection display apparatus, utilize this projection display apparatus, the rayed optic modulating device that sends from light source, and by the light of optic modulating device projection based on the video data modulation.In this projection display apparatus, driver provides video data by the interconnection material with the many signal line that are arranged in parallel, and optic modulating device is used for display device, utilizes this display device to show to have the well-lit image based on the video data level.In addition, according to this embodiment of the invention, in optic modulating device, or between interconnection material, the interconnection structure that is used for showing the display device with the image that is suitable for video data brightness comprises rearranging via interconnection material and transmits the signal wire of video data from signal wire, thereby makes via the video data of the signal wire that has bigger inductance element influence in interconnection material and alternately offered the neighbor or the pixel groups of display device via the video data of the signal wire with smaller inductance element influence.
Projection display apparatus adopt according to previous embodiment, be used for to optic modulating device provide video data to interconnection structure, and because the irregularity in brightness that the inconsistent influence of inductance element causes presenting in the interconnection material can reduce to such degree, promptly at the current driving ability that does not change driver or do not shorten under the situation of length of interconnection material, human eye just almost observes maybe can't not observe irregularity in brightness.
According to embodiments of the invention, provide video data to display device, utilize this display device to show the well-lit image that has according to the video data level via interconnection material with the many signal line that are arranged in parallel, in this case, do not change the length of the current driving ability or the interconnection material of driver, human eye does not just almost observe maybe can't be observed because the irregularity in brightness that the inconsistent influence of inductance element causes in the interconnection material.
Description of drawings
Fig. 1 is the figure that the interconnection structure of liquid crystal indicator in the correlation technique is shown;
Fig. 2 A and 2B illustrate because the figure of the video data level distribution that the interconnection structure of Fig. 1 causes;
Fig. 3 is the figure that the irregularity in brightness of the liquid crystal indicator among Fig. 1 is shown;
Fig. 4 is the figure of an example that the interconnection structure of the liquid crystal indicator of having used the embodiment of the invention is shown;
Fig. 5 is illustrated in the figure that forms the object lesson of signal wire in the driving substrate of Fig. 4;
Fig. 6 A and 6B illustrate because the figure of the video data level distribution that the interconnection structure of Fig. 4 causes;
Fig. 7 is the figure of irregularity in brightness that the liquid crystal indicator of Fig. 4 is shown;
Fig. 8 is the figure of configuration example that the optical system of the liquid crystal projection apparatus of having used the embodiment of the invention is shown;
Fig. 9 is the another example of interconnection structure of the driving substrate of Fig. 4; And
Figure 10 A and 10B illustrate because the figure of the video data level distribution that the interconnection structure of Fig. 9 causes;
Figure 11 is the another example of interconnection structure of the driving substrate of Fig. 4;
Figure 12 A and 12B illustrate because the figure of the video data level distribution that the interconnection structure of Figure 11 causes;
Figure 13 is the another example of interconnection structure of the driving substrate of Fig. 4; And
Figure 14 A and 14B illustrate because the figure of the video data level distribution that the interconnection structure of Figure 13 causes.
Embodiment
Hereinafter, specifically describe reflection LCD device with reference to the accompanying drawings with dot sequency drive system of having used the embodiment of the invention.
Fig. 4 shows an example of the interconnection structure that is used for reflection LCD device, and this reflection LCD device has the dot sequency drive system of having used the embodiment of the invention.In Fig. 4, driver IC 61 and flexible print circuit (FPC) 51 have the structure identical with driver IC shown in Figure 1 61 and FPC 51.In addition, FPC 51 comprises two ground wires (being used for signal ground) that are positioned at two ends.
In reflection LCD device, the gate line X of line direction and the data line Y of column direction are arranged in matrix form on driving substrate 1, this driving substrate 1 is formed by silicon substrate, is furnished with pixel (pixel-driving circuit and pixel electrode) P at the intersection point place of gate line X and data line Y.
Five signal line 31a are formed on the substrate 31 to 31e, are used for transmitting video data D1 to D5 to FPC 51.In the connection side of driver IC 61, arrange signal wire 31a to 31e with the order of left side beginning from signal wire 31a to 31e; And in the connection side of FPC 51, signal wire 31a arranges as follows to 31e:
-signal wire 31a is connected to the signal wire 51d of FPC 51.
-signal wire 31b is connected to the signal wire 51a of FPC 51.
-signal wire 31c is connected to the signal wire 51c of FPC 51.
-signal wire 31d is connected to the signal wire 51e of FPC 51.
-signal wire 31e is connected to the signal wire 51b of FPC 51.
For example, by using multilager base plate, can easily realize signal wire 31a rearranging to 31e as substrate 31.
Rearrange signal wire 31a to 31e, thereby make the signal wire 51d of video data D1 by FPC 51 offer substrate 1 from the video data D1 of driver IC 61 output to D5.
-video data D2 offers driving substrate 1 by the signal wire 51a of FPC 51.
-video data D3 offers driving substrate 1 by the signal wire 51c of FPC 51.
-video data D4 offers driving substrate 1 by the signal wire 51e of FPC 51.
-video data D5 offers driving substrate 1 by the signal wire 51b of FPC 51.
Provide control signal C (not shown) from the external definition control circuit to driving substrate 1 by FPC (flexible print circuit) 51.
On driving substrate 1, form five signal line 2a to 2e, be used for transmitting video data to datawire driver 3 by FPC 51.Connection side at FPC 51, angle from datawire driver 3, arrange signal wire 2a (more specifically with the order that the left side from signal wire 2a, 2b, 2c and 2d begins to 2e, signal wire 2a is connected respectively to signal wire 51a, 51b, 51c, 51d and 51e to 2e), from the angle of datawire driver 3, signal wire 2a rearranges as follows to 2e.
-signal wire 2a is repositioned onto second position, left side from left end.
-second position is repositioned onto right-hand member from the left side with signal wire 2b.
-signal wire 2c remains on the position in left side the 3rd (center).
-the 4th position is repositioned onto left end from the left side with signal wire 2d.
-signal wire 2e is repositioned onto the 4th position, left side from right-hand member.
Fig. 5 specifically illustrates the figure of the signal wire 2a of formation on the driving substrate 1 to 2e.Fig. 5 shows the driving substrate of seeing from below 1 (if the figure among Fig. 4 is a top view, then showing the back side).Form a plurality of metal levels by CMOS technology on the silicon substrate that forms driving substrate 1, one of them metal level (being also referred to as " the first metal layer ") is to comprise the layer of signal wire 2a to 2e.
It should be noted that signal wire 2a by the contact layer on the metal level (being also referred to as " second metal level ") that is positioned at the first metal layer downside, forms signal wire 2a to the intersection point place of 2e in Fig. 4, thereby can undesired signal line 2d.In addition, signal wire 2b is formed on second metal level by contact layer, thereby can undesired signal line 2c, 2d and 2e.Signal wire 2c is formed on second metal level by contact layer, thereby can undesired signal line 2d.Therefore, the part as the CMOS technology of making driving substrate 1 realizes signal wire 2a rearranging to 2e.
Since rearrange signal wire 2a to 2e, thus be sent to datawire driver 3 by the video data D2 of the signal wire 51a among the FPC 51, as the video data in the pixel at the second place place, left side that should write adjacent five pixels.Video data D5 by the signal wire 51b among the FPC 51 is sent to datawire driver 3, as the video data in the pixel at the right-hand member place that should write adjacent five pixel P.Video data D3 by the signal wire 51c among the FPC 51 is sent to datawire driver 3, as the video data in the pixel of the center that should write adjacent five pixel P.Video data D1 by the signal wire 51d among the FPC 51 is sent to datawire driver 3, as the video data in the pixel at the left end place that should write adjacent five pixels.Video data D4 by the signal wire 51e among the FPC 51 is sent to datawire driver 3, as the video data in the pixel of the 4th position, left side that should write adjacent five pixel P.
All video data D1 are provided for four independent switches 4 to 7 in the datawire driver 3 to D5.
The control signal C that offers driving substrate 1 is provided for gate line driver 9 and datawire driver 3.Gate line driver 9 is according to control signal C raster polar curve X.In datawire driver 3, ON-OFF control circuit 8 is according to control signal C control transformation switch 4 to 7.
Shown in arrow among the figure, show below: from the lower end of viewing area to upper end raster polar curve X, from the right-hand member of viewing area under the situation of left end switch data line Y, the operation of dot sequency drive system.
At first, connect switches 7 and video data D1 is offered five data line Y on right side, the minimum row of while gate line driver 9 raster polar curve X to D5 by the ON-OFF control circuit in the independent use datawire driver 38.Therefore, adjacent five pixel P on right side are written in the minimum row.
Subsequently, connect switch 6 and video data D1 is offered five data line Y that the center slightly takes over to D5 by the ON-OFF control circuit in the independent use datawire driver 38, simultaneously the minimum row of gate line driver 9 raster polar curves.Therefore, slightly take over adjacent five pixel P of side of center are written in the minimum row.
Connect switch 5 and video data D1 is offered five data line Y that slightly take back in the center to D5 by the ON-OFF control circuit in the independent use datawire driver 38, simultaneously the minimum row of gate line driver 9 raster polar curves.Therefore, adjacent five pixel P that in the minimum row slightly take back in the center are written into.
Connect switch 4 by the ON-OFF control circuit in the independent use datawire driver 38, five data line Y on the left of video data D1 is offered to D5, the minimum row of gate line driver 9 raster polar curves simultaneously.Therefore, adjacent five pixel P in left side are written in the minimum row.
After writing the pixel of minimum row, with the second row gate line of similar order scanning from minimum row beginning.Repeat to write with similar order, simultaneously with top direction line-by-line ground raster polar curve.
Describe below because the inconsistent influence of inductance element among the FPC 51 causes the irregularity in brightness that occurs in reflection LCD device.Fig. 6 A shows and represents that inductance element distributes to the conspicuousness in the influence of 51e to each signal wire 51a among the FPC 51.Because FPC 51 comprises two ground wires (being used for signal ground) that are positioned at FPC 51 two ends, so inductance element becomes big to the influence of signal wire gradually to be positioned at more near signal wire 51a, the 51b of the position of FPC 51 ends and the order of 51c; To the influence of signal wire to be positioned at more signal wire 51c, the 51d of position and diminishing gradually of 51e from preface near FPC 51 ends.Therefore, this distribution comprises a positive peak.This distribution is identical with the distribution shown in Fig. 2 A.
Yet, as previously described, owing to rearrange in the driving substrate 1 of reflection LCD device to 2e, so the video data D1 that the signal wire 51d by FPC 51 transmits is provided for the pixel of left end in adjacent 5 pixels from the signal wire 2a that wherein transmits video data.Be provided for the pixel of the left side second place by signal wire 51a among the FPC 51 (the signal wire) video data that transmits with inductance element influence littler than signal wire 51d.Be provided for the pixel at center by signal wire 51c among the FPC 51 (signal wire) the video data D3 that transmits with inductance element influence bigger than signal wire 51a.Be provided for the pixel of the 4th position, left side by signal wire 51e among the FPC 51 (signal wire) the video data D4 that transmits with inductance element influence littler than signal wire 51c.Be provided for the pixel of right-hand member by signal wire 51b among the FPC 51 (signal wire) the video data D5 that transmits with inductance element influence bigger than signal wire 51e.
Therefore, in the FPC 51 of reflection LCD device, alternately offered five adjacent pixels via the video data of signal wire with via the video data of signal wire with smaller inductance element influence with the influence of bigger inductance element.
Shown in Fig. 6 B, distribute show offer adjacent five pixel P1 to the video data D1 of P5 to D5, as described below:
The voltage level of the video data D2 of the pixel P2 of the second place is lower than the voltage level of the video data D1 of the pixel P1 that offers left end on the left of offering; The voltage level that offers the video data D3 of center pixel P3 is higher than the voltage level of video data D2;
The voltage level of the video data D4 of the pixel P4 of the 4th position is lower than the voltage level of video data D3 on the left of offering; And
The voltage level that offers the video data D5 of right-hand member pixel P5 is higher than the voltage level of video data D4.Especially, this distribution does not show the gradual change of the voltage level shown in Fig. 2 B, and shows as the rising or the reduction of the alternately repeated voltage level of each pixel.
Therefore, in reflection LCD device, do not observe as shown in Figure 3 as the horizontal width of five pixels of unit and the irregularity in brightness pattern that presents, but as shown in Figure 7, can observe each pixel and alternately repeat to present bright or dark irregularity in brightness pattern.Especially, spatial frequency can be brought up to human eye and almost not observe the degree that maybe can't observe spatial frequency.
The result, because the irregularity in brightness that the inconsistent influence of inductance element causes presenting among the FPC 51 can reduce to such degree, that is, do not change the current driving ability of driver IC 61 or do not shorten the length of FPC 51, human eye just almost observes maybe can't not observe irregularity in brightness.
Fig. 4 shows is convenient to illustrate accompanying drawing and will be as five examples that pixel writes of unit; Yet as a large amount of pixels of unit, 24 for example adjacent pixels are written to the reflection LCD device with dot sequency drive system in fact.According to embodiments of the invention, the irregularity in brightness pattern that presents when not observing the horizontal width as 24 pixels of unit, and observed the irregularity in brightness pattern that each pixel alternately repeats to present bright or dark brightness.Therefore, because the spatial frequency of irregularity in brightness pattern improves, further improve so improve the effect of picture quality.
In addition, can not improve the irregularity in brightness pattern owing to do not increase the current driving ability of driver IC, so can use relatively cheap driver IC yet.Can not improve the irregularity in brightness pattern owing to do not change the length of flexible print circuit, so flexible print circuit can be designed to have higher flexibility and keep identical length yet.Replacedly, if the ability of driver IC is enough, then flexible print circuit can be designed to have bigger length.
In the substrate 31 that comprises driver IC 61, rearrange to FPC 51 transmit video data D1 to the five signal line 31a of D5 to 31e, thereby make with do not rearrange substrate 1 in signal wire 2a can be provided for the pixel of reflection LCD device to the identical video data of the employed video data of 2e; In other words, as shown in Figure 6, rearrange five signal line 31a to 31e, thereby as shown in Figure 3, make video data D1 be provided for the pixel P1 of left end, video data D2 is provided for the pixel P2 of the left side second place, and video data D3 is provided for center pixel P3, video data D4 is provided for the pixel P4 of the 4th position, left side, and video data D5 is provided for the pixel P5 of right-hand member.
Therefore, not changing video data D1 from driver IC 61 under the situation of the way of output subsequently of D5, the video data that is suitable for the pixel of ad-hoc location can be offered each pixel of reflection LCD device; That is to say, the video data D1 that is used to offer the left end pixel exports from output terminal 61a, the video data D2 of second place pixel exports from output terminal 61b on the left of being used to offer, the video data D3 that is used to offer center pixel exports from output terminal 61c, the video data D4 that is used to offer left side the 4th position pixel is from output terminal 61d output, and the video data D5 that is used to offer the right-hand member pixel exports from output terminal 61e.
Fig. 8 is the figure that the configuration example of the liquid crystal projection apparatus that has applied the embodiment of the invention is shown.This liquid crystal projection apparatus comprises: reverberator 42 makes the light that sends from the discharge lamp 41 as light source become directional light; The condenser lens 43 that directional light passes; With dichronic mirror 44, be used for reflect blue, incident light projects on this dichronic mirror 44.The ruddiness and the green glow that transmit by dichronic mirror 44 are reflected by mirror 45, and reflected light projects the dichronic mirror 46 that is used for reflect green light.
The ruddiness that transmits by dichronic mirror 46, project polarization beam apparatus 47 (R), 47 (G) and 47 (B) respectively by the green glow of dichronic mirror 46 reflections with by the blue light of dichronic mirror 44 reflections.The concrete linear polarization of blue light, green glow or ruddiness (that is any one in P polarization and the S polarization) projects the corresponding reflection LCD device that each has dot sequency drive system 48 (R), 48 (G) and 48 (B) by polarization beam apparatus 47 (R), 47 (G) and 47 (B).
Video data R, G and B offer the driving substrate (not shown) of reflection LCD device 48 (R), 48 (G) and 48 (B) from peripheral driver IC by flexible print circuit in mode same as shown in Figure 4.The respective drive substrate of reflection LCD device 48 (R), 48 (G) and 48 (B) comprises the configuration identical with substrate shown in Figure 4.In addition, comprise that the substrate of driver IC has signal wire, this signal wire have with signal wire 31a shown in Figure 4 to the identical interconnection structure of 31e, be used for sending video data to flexible print circuit.
Modulate the incident light that projects reflection LCD device 48 (R), 48 (G) and 48 (B) based on video data R, G and B, and by reflection LCD device 48 (R), 48 (G) and 48 (B) reflection.Catoptrical concrete linear polarization from reflection LCD device 48 (R), 48 (G) and 48 (B) is synthetic by polarization beam apparatus 47 (R), 47 (G) and 47 (B) by colour splitting prism 40, and projects on the screen (not shown) from projection lens 50.
In liquid crystal projection apparatus, the irregularity in brightness that is rendered as projected image owing to the inconsistent influence of the inductance element in the flexible print circuit on screen can reduce to such degree, promptly, at the current driving ability that does not change driver IC or do not shorten under the situation of length of flexible print circuit, human eye does not almost observe maybe can't observe irregularity in brightness.
It should be noted that suppose that the interconnection structure of driving substrate shown in Figure 41 uses FPC 51, this FPC only has two ground wires (being used for signal ground) at its two ends.Yet, if employing is different from the ground wire quantity of aforementioned flexible print circuit and the flexible print circuit of ground line position, then rearrange the signal wire from the driving substrate 1 of its transmission video data, thereby in this flexible print circuit, alternately offered adjacent pixels via the video data of signal wire with via video data with smaller inductance element influence with bigger inductance element influence.Therefore, because the irregularity in brightness that the inconsistent influence of inductance element causes in the flexible print circuit may reduce to such degree, that is, human eye does not almost observe maybe can't observe irregularity in brightness.
Fig. 9 shows and comprises that 10 signal line 52a are to 52j be positioned at FPC two ends and center (shown in the dotted line, between signal wire 52e and 52f) the FPC (flexible print circuit) 52 of three ground wires be used to write under the situation as 10 neighbors of unit the embodiment of the interconnection structure of driving substrate 1.10 signal line 2a are formed on the driving substrate 1 to 2j, are used for transmitting video data by FPC 52 to datawire driver 3.(in this embodiment, switch 4 to 7 shown in Figure 4 has and is used for to providing the datawire driver 3 of video data as 10 data line Y of unit, and does not have the switch that is used for to video data is provided as five data line Y of unit).
Connection side at FPC 52, angle from datawire driver 3, arrange signal wire 2a (more specifically with the order that the left side from signal wire 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i and 2j begins to 2j, signal wire 2a connects signal wire 52a, 52b, 52c, 52d, 52e, 52f, 52g, 52h, 52i and 52j respectively to 2j), from the angle of datawire driver 3, the following signal wire 2a that rearranges is to 2j.
-signal wire 2a is repositioned onto the left side second place from left end.
-signal wire 2b is repositioned onto the 3rd position from the left side second place.
-the 3rd position is repositioned onto left end from the left side with signal wire 2c.
-the 4th position is repositioned onto the 5th position, left side from the left side with signal wire 2d.
-the 5th position is repositioned onto the 4th position, left side from the left side with signal wire 2e.
-signal wire 2f remains on the 6th position, left side.
-signal wire 2g remains on the 7th position, left side.
-signal wire 2h is repositioned onto the 9th position, left side from the left side 8 positions.
-the 9th position is repositioned onto right-hand member from the left side with signal wire 2i.
-signal wire 2j is repositioned onto the left side 8 positions from right-hand member.
Figure 10 A shows and represents that inductance element is to the distribution that influence conspicuousness of corresponding signal line 52a to 52j among the FPC 52.Because FPC 52 comprises three ground wires that are positioned at two ends and center, so inductance element becomes big to the influence of signal wire gradually with signal wire 52a, the 52b of the position that is positioned at more close FPC 52 ends and the order of 52c; And the influence of signal wire is diminished gradually with signal wire 52c, the 52d of the position that is positioned at more close FPC 52 centers and the order of 52e.In addition, inductance element becomes big to the influence of signal wire gradually with signal wire 52f, the 52g of the position that is positioned at more close FPC 52 ends and the order of 52h; And the influence of signal wire is diminished gradually with signal wire 52h, the 52i of the position that is positioned at more close FPC 52 ends and the order of 52j.Therefore, this distribution comprises two positive peaks.
Yet, owing on driving substrate 1, rearrange as previously mentioned from the signal wire 2a that wherein transmits video data, so the video data that transmits via the signal wire 52c among the FPC 52 is provided for the pixel of left end in adjacent 10 pixels to 2h.Be provided for the pixel of the left side second place via the signal wire 52a among the FPC 52 (the signal wire) video data that transmits with inductance element littler than the influence of the inductance element of signal wire 52c.Be provided for the pixel of the 3rd position, left side via the signal wire 52b among the FPC 52 (the signal wire) video data that transmits with inductance element bigger than the influence of the inductance element of signal wire 52a.Be provided for the pixel of the 4th position, left side via the signal wire 52e among the FPC 52 (the signal wire) video data that transmits with inductance element littler than the influence of the inductance element of signal wire 52b.Be provided for the pixel of the 5th position, left side via the signal wire 52d among the FPC 52 (the signal wire) video data that transmits with inductance element bigger than the influence of the inductance element of signal wire 52e.
Be provided for the pixel of the 6th position, left side via the signal wire 52f among the FPC 52 (the signal wire) video data that transmits with inductance element littler than the influence of the inductance element of signal wire 52d.Be provided for the pixel of the 7th position, left side via the signal wire 52g among the FPC 52 (the signal wire) video data that transmits with inductance element bigger than the influence of the inductance element of signal wire 52f.Be provided for the pixel of left side 8 positions via the signal wire 52j among the FPC 52 (the signal wire) video data that transmits with inductance element littler than the influence of the inductance element of signal wire 52g.Be provided for the pixel of the 9th position, left side via the signal wire 52h among the FPC 52 (the signal wire) video data that transmits with inductance element bigger than the influence of the inductance element of signal wire 52j.Be provided for the pixel of right-hand member via the signal wire 52i among the FPC 52 (the signal wire) video data that transmits with inductance element littler than the influence of the inductance element of signal wire 52h.
Therefore, in FPC 52, alternately offered 10 adjacent pixels via the video data of signal wire with via the video data of signal wire with smaller inductance element influence with the influence of bigger inductance element.
As described below the showing of Figure 10 B is provided for the distribution of adjacent 10 pixel P1 to the video data of P10:
The voltage level of the video data of the pixel P2 of the second place is lower than the voltage level of the video data that offers left end pixel P1 on the left of offering;
The voltage level of the video data of the pixel P3 of the 3rd position is higher than the voltage level of the video data that offers pixel P2 on the left of offering;
The voltage level of the video data of the pixel P4 of the 4th position is lower than the voltage level of the video data that offers pixel P3 on the left of offering;
The voltage level of the video data of the pixel P5 of the 5th position is higher than the voltage level of the video data that offers pixel P4 on the left of offering;
The voltage level of the video data of the pixel P6 of the 6th position is lower than the voltage level of the video data that offers pixel P5 on the left of offering;
The voltage level of the video data of the pixel P7 of the 7th position is higher than the voltage level of the video data that offers pixel P6 on the left of offering;
The voltage level of the video data of the pixel P8 of 8 positions is lower than the voltage level of the video data that offers pixel P7 on the left of offering;
The voltage level of the video data of the pixel P9 of the 9th position is higher than the voltage level of the video data that offers pixel P8 on the left of offering; And
The voltage level that offers the video data of right-hand member pixel P10 is lower than the voltage level of the video data that offers pixel P9.Especially, shown in Fig. 6 B, the voltage level show each pixel of distributing alternately repeatedly raises or reduces.
Therefore, 10 pixel P1 can comprise the irregularity in brightness pattern that replaces and repeat to show bright or dark brightness as shown in Figure 7 on each pixel to P10.As a result, because the irregularity in brightness that the inconsistent influence of inductance element causes among the FPC 52 can reduce to such degree, that is, human eye does not almost observe maybe can't observe irregularity in brightness.
Fig. 4 shows the embodiment that rearranges from the signal wire 2a that wherein transmits video data to 2e on the driving substrate 1 of reflection LCD device.Yet alternative embodiment has proposed to insert substrate (for example, multilager base plate) between driving substrate 1 and FPC 51, rearranges in this substrate from wherein transmitting many signal line of video data, and does not rearrange signal wire 2a to 2e.
Fig. 4 shows and rearranges on the substrate 31 that comprises driver IC 61 from wherein transmitting the embodiment of video data D1 to the signal wire 31a of D5 to 31e.Yet, alternative embodiment has proposed do not rearranging signal wire 31a under the situation of 31e and can change the way of output to D5 from the video data D1 of driver IC 61, thereby the video data D2 of the pixel that offers the left side second place is exported from output terminal 61a, the video data D5 that offers the right-hand member pixel exports from output terminal 61b, the video data D3 that offers the center pixel exports from output terminal 61c, the video data D1 that offers the left end pixel is from output terminal 61d output, and the video data D4 that offers left side the 4th position pixel exports from output terminal 61e.Therefore, each pixel of using in the reflection LCD device can be provided the video data that is suitable for location of pixels.
Therefore, be provided for all pixels if having the video data of iso brightness level, then can only rearrange signal wire 2a to 2e, and not rearrange signal wire 31a, or not have to change the way of output to D5 from the video data D1 of driver IC 61 to 31e.
In addition, Fig. 4 and Fig. 9 show such embodiment: rearrange and be used for the signal wire that video data transmits in the driving substrate, alternately offered neighbor (each pixel) thereby make via the video data of the signal wire that has bigger inductance element influence in FPC with via the video data of the signal wire with smaller inductance element influence.Yet, rearrange the signal wire that signal wire is not limited to alternately provide to neighbor corresponding video data.The signal wire that is used for the video data transmission in the driving substrate can rearrange, thereby make via the video data of the signal wire that has the influence of bigger inductance element in FPC with via the video data of the signal wire with smaller inductance element influence and alternately offered adjacent set, each group all comprises two or more pixels.
Utilize this mode, do not observe the irregularity in brightness pattern that in the whole horizontal widths of pixel, is presenting a positive peak performance, and can observe the irregularity in brightness pattern that replaces and repeat to present bright or dark brightness for each pixel groups as writing unit.Especially, spatial frequency can be increased to such degree, and promptly human eye does not almost observe maybe and can't observe spatial frequency.
The result, because the irregularity in brightness that the inconsistent influence of inductance element causes presenting in the interconnection material can reduce to such degree, promptly, at the current driving ability that does not change driver or do not shorten under the situation of length of interconnection material, human eye does not almost observe maybe can't observe irregularity in brightness.
Figure 11 shows the embodiment of two pixels as one group of pixel.That is to say that Figure 11 shows and comprises that 10 signal line 53a are used to write situation as 10 neighbors of unit to 53j and the FPC (flexible print circuit) 53 that is positioned at two ground wires at FPC two ends.Signal wire 2a is formed on the driving substrate 1 to 2j, is used for transmitting video data via FPC 53 to datawire driver 3.(in this embodiment, switch is supplied to datawire driver 3 so that provide video data to data line Y on per 10 data lines, and not as shown in Figure 4, thereby provide switch 4 to 7 on per 5 data lines, to provide video data) to data line Y.
Connection side at FPC 53, angle from datawire driver 3, the arranged in order signal wire 2a that begins with the left side from signal wire 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i and 2j to 2j (more specifically, signal wire 2a is connected respectively to signal wire 53a, 53b, 53c, 53d, 53e, 53f, 53g, 53h, 53I and 53j to 2j), from the angle of datawire driver 3, signal wire 2a rearranges as follows to 2j.
-signal wire 2a is repositioned onto the 3rd position, left side from left end.
-signal wire 2b is repositioned onto the 4th position, left side from the left side second place.
-the 3rd position is repositioned onto left end from the left side with signal wire 2c.
-the 4th position is repositioned onto the left side second place from the left side with signal wire 2d.
-signal wire 2e remains on the 5th position, left side.
-signal wire 2f remains on the 6th position, left side.
-the 7th position is repositioned onto the 9th position, left side from the left side with signal wire 2g.
-signal wire 2h is repositioned onto right-hand member from the left side 8 positions.
-the 9th position is repositioned onto the 7th position, left side from the left side with signal wire 2i.
-signal wire 2j is repositioned onto the left side 8 positions from right-hand member.
Figure 12 A shows and represents that inductance element is to the distribution that influence conspicuousness of corresponding signal line 53a to 53j among the FPC 53.Because FPC 53 comprises two ground wires that are positioned at its two ends, so inductance element becomes big to the influence of signal wire gradually with the order of signal wire 53a, the 53b, 53c, 53d and the 53e that are positioned at more close FPC 53 end positions; And the influence of the signal wire order with signal wire 53f, the 53g, 53h, 53i and the 52j that are positioned at more close FPC 53 end positions diminished gradually.Therefore, this distribution comprises a positive peak.
Yet, owing on driving substrate 1, rearrange as previously mentioned from the signal wire 2a that wherein transmits video data to 2j, so the video data that transmits via the signal wire 53c among the FPC 53 is provided for the pixel of left end in adjacent 10 pixels, and is provided for the pixel of the left end second place in adjacent 10 pixels via the video data that the signal wire 53d among the FPC 53 transmits.In addition, be provided for the pixel of the 3rd position, left side via the signal wire 53a among the FPC 53 (the signal wire) video data that transmits, and be provided for the pixel of the 4th position, left side via the signal wire 53b among the FPC 53 (the signal wire) video data that transmits with inductance element littler than the inductance element influence of signal wire 53c or 53d with inductance element littler than the inductance element influence of signal wire 53c or 53d.Be provided for the pixel of the 5th position, left side via the signal wire 53e among the FPC 53 (the signal wire) video data that transmits, and be provided for the pixel of the 6th position, left side via the signal wire 53f among the FPC 53 (the signal wire) video data that transmits with inductance element bigger than the inductance element influence of signal wire 53a or 53b with inductance element bigger than the inductance element influence of signal wire 53a or 53b.Be provided for the pixel of the 7th position, left side via the signal wire 53i among the FPC 53 (signal wire) the video data D5 that transmits, and be provided for the pixel of left side 8 positions via the signal wire 53j among the FPC 53 (the signal wire) video data that transmits with inductance element littler than the inductance element influence of signal wire 53e or 53f with inductance element littler than the inductance element influence of signal wire 53e or 53f.Be provided for the pixel of the 9th position, left side via the signal wire 53g among the FPC 53 (the signal wire) video data that transmits, and be provided for the pixel of right-hand member via the signal wire 53h among the FPC 53 (the signal wire) video data that transmits with inductance element bigger than the inductance element influence of signal wire 53i or 53j with inductance element bigger than the inductance element influence of signal wire 53i or 53j.
Therefore, alternately offered pixel groups via the video data of the signal wire that has the influence of bigger inductance element in FPC 53 with via the video data of the signal wire with smaller inductance element influence, each pixel groups all comprises two pixels.
Shown in Figure 12 B, following illustrating, the expression that distributes offers the video data of adjacent 10 pixel P1 to P10:
Offer the voltage level that is lower than the video data that offers pixel P1, P2 on the left end and the left side second place at the voltage level of the video data of the left side third and fourth locational pixel P3, P4;
The voltage level that offers the video data of the 5th and the 6th locational pixel P5, P6 in the left side is higher than the voltage level of the video data that offers pixel P3, P4;
The voltage level that offers the video data of pixel P7, P8 on left side the 7th and 8 positions is lower than the voltage level of the video data that offers pixel P5, P6; And
The voltage level that offers the video data of P9, P10 on the 9th position, left side and right-hand member pixel is higher than the voltage level of the video data that offers pixel P7, P8.Especially, the gradual change of voltage level is not expressed in this distribution, alternately repeatedly increases or reduces for every group of two pixels and expressed voltage level.
Therefore, for 10 pixel P1 to P10, though do not illustrate among the figure, do not observe the irregularity in brightness pattern that on the horizontal width of 10 pixels, presents a positive peak, and observe the irregularity in brightness pattern that per two pixels alternately repeatedly present bright or dark brightness.Especially, spatial frequency may be increased to such degree, that is, human eye does not almost observe maybe can't observe spatial frequency.
The result, because the irregularity in brightness that the inconsistent influence of inductance element causes presenting in the interconnection material may reduce to such degree, promptly, at the current driving ability that does not change driver or do not shorten under the situation of length of interconnection material, human eye does not almost observe maybe can't observe irregularity in brightness.
Then, Figure 13 shows the embodiment that comprises aforementioned pixel groups under in Fig. 4 pixel P shows redness, green, blueness (three primary colors) as three pixel display unit the situation, and wherein each pixel groups comprises three pixels.That is to say that Figure 13 shows such a case, that is, comprise that 12 signal line 54a to 541 and the FPC (flexible print circuit) 54 that is positioned at two ground wires at FPC two ends are used to write 12 neighbors as the unit.Transmit the RGB video data of three pixels being used to comprise same display unit from signal wire 54a to 54c.Similarly, be used to comprise same display unit three pixels the RGB video data respectively from signal wire 54d to 54f, 54g transmits to 54l to 54i and 54j.12 signal line 2a are formed on the driving substrate 1 to 2l, are used for transmitting video data via FPC 54 to datawire driver 3.(in this example, switch is offered datawire driver 3 so that provide video data to data line Y on per 12 data lines, thereby rather than provides switch 4 to 7 on per 5 data lines, to provide video data as shown in Figure 4) to data line Y.
Connection side at FPC 54, angle from datawire driver 3, with the series arrangement signal wire 2a in the left side of signal wire 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 2j, 2k and 2l (more specifically to 2l, signal wire 2a to 21 connects signal wire 54a, 54b, 54c, 54d, 54e, 54f, 54g, 54h, 54i, 54j, 54k and 54l respectively), from the angle of datawire driver 3, signal wire 2a to 21 rearranges as follows.
-signal wire 2a is repositioned onto the 4th position, left side from left end.
-signal wire 2b is repositioned onto the 5th position, left side from the left side second place.
-the 3rd position is repositioned onto the 6th position, left side from the left side with signal wire 2c.
-the 4th position is repositioned onto left end from the left side with signal wire 2d.
-the 5th position is repositioned onto the left side second place from the left side with signal wire 2e.
-the 6th position is repositioned onto the 3rd position, left side from the left side with signal wire 2f.
-signal wire 2g remains on the 7th position, left side.
-signal wire 2h remains on the left side 8 positions.
-signal wire 2i remains on the 9th position, left side.
-signal wire 2j remains on the left side X position.
-signal wire 2k remains on the 11 position, left side.
-signal wire 2l remains on right-hand member.
Figure 14 A shows and is illustrated among the FPC 54 inductance element to the distribution that influence conspicuousness of corresponding signal line 54a to 54l.Because FPC 54 comprises two ground wires that are positioned at its two ends, so inductance element becomes big to the influence of signal wire gradually with the order of signal wire 54a, the 54b, 54c, 54d, 54e and the 54f that are positioned at more close FPC 54 end positions; And the influence of the signal wire order with signal wire 54g, the 54h, 54i, 54j, 54k and the 54l that are positioned at more close FPC 54 end positions diminished gradually.Therefore, this distribution comprises a positive peak.
Yet, owing on driving substrate 1, rearrange as previously mentioned from the signal wire 2a that wherein transmits video data to 2l, thus the video data that transmits to 54f via the signal wire 54d among the FPC 54 be provided on the left of three pixels (RGB display unit) of first to the 3rd position.Be provided for three pixels (RGB display unit) of the 4th to the 6th position, left side via signal wire among the FPC 54 (having the signal wire to the little inductance element influence of the 54f) video data that transmits than signal wire 54d.Be provided for three pixels (RGB display unit) of the 7th to the 9th position, left side via signal wire 54g among the FPC 54 to 54i (having the signal wire to the big inductance element influence of the 54f) video data that transmits than signal wire 54d.Be provided for three pixels (RGB display unit) of the tenth to the 12 position, left side via signal wire 54j among the FPC 54 to 54l (having the signal wire to the little inductance element influence of the 54i) video data that transmits than signal wire 54g.
Therefore, alternately offered via the video data of the signal wire that in FPC 54, has the influence of bigger inductance element with via the video data of signal wire and formed pixel groups red, green and blue (RGB) display unit with smaller inductance element influence.
As shown in Figure 14B, as described below, the expression that distributes offers the video data of adjacent 12 pixel P1 to P12:
Three pixel P4 that offer the 4th to the 6th position, left side to the voltage level of the video data of P6 (RGB display unit) be lower than offer on the left of three pixel P1 of first to the 3rd position to the voltage level of the video data of P3 (RGB display unit);
Three pixel P7 that offer the 7th to the 9th position, left side are higher than to the voltage level of the video data of P9 (RGB display unit) and offer the voltage level of pixel P4 to the video data of P6 (RGB display unit); And
Three pixel P10 that offer the tenth to the 12 position, left side are lower than to the voltage level of the video data of P12 (RGB display unit) and offer the voltage level of pixel P7 to the video data of P9 (RGB display unit).Especially, the gradual change of voltage level is not represented in this distribution, and the expression voltage level alternately repeatedly increases or reduces for every group of three pixels (RGB display unit).
Therefore, for 12 pixel P1 to P12, although do not illustrate among the figure, do not observe the irregularity in brightness pattern that on 12 pixel level width, presents a positive peak, and can observe the irregularity in brightness pattern that alternately repeatedly presents bright or dark brightness for per three pixels.Especially, spatial frequency may be increased to such degree, and promptly human eye does not almost observe maybe and can't observe spatial frequency.
The result, because the irregularity in brightness that the inconsistent influence of inductance element causes presenting in the interconnection material can reduce to such degree, promptly, at the current driving ability that does not change driver or do not shorten under the situation of length of interconnection material, human eye does not almost observe maybe can't observe irregularity in brightness.
In addition, embodiments of the invention can be applied to the reflection LCD device that utilizes the dot sequency drive system.Yet embodiments of the invention can be not limited to utilize the reflection LCD device of dot sequency drive system.Embodiments of the invention can also be applied to reflection LCD device or the transmissive liquid crystal display apparatus that utilizes line order drive system.In addition, embodiments of the invention also can be applied to the display device (field-causing electron emission display (FED), organic EL display and inorganic EL display device) of utilizing analog drive system except being applied to the liquid crystal indicator.In addition, embodiments of the invention also can be applied to the display device of utilizing the digital drive system, can provide PAM (pulse amplitude modulation) video data to this digital drive system.In addition, can be applied at embodiments of the invention under the situation of display device with structure that signal wire is difficult to rearrange, between display device and flexible print circuit, (for example insert substrate, multilager base plate), and rearrange from wherein transmitting many signal line of video data, can easily rearrange signal wire and with the structure-irrelevant of intrinsic display device.
Shown in the embodiment of Fig. 4, driver IC 61 provides video data by FPC 51.Yet,, can observe the inconsistent influence of inductance element except being used for outside the flexible print circuit (for example, flexible flat cable (FFC)), also having in the interconnection material of the many signal line that are arranged in parallel.Therefore, embodiments of the invention can be applied to this situation,, provide video data via also have the interconnection material of the many signal line that are arranged in parallel except being used for flexible print circuit from driver IC that is.
In addition, Fig. 8 illustrates, and embodiments of the invention are applied to liquid crystal projection apparatus.Yet, interconnection structure according to the embodiment of the invention not only can be applied to for example optical projection system of liquid crystal projection apparatus, also can be used for various display device, for example the display of the view finder of television receiver, individual computer monitor, Helmet Mounted Display, video camera and digital camera and cell phone and information terminal apparatus.
It should be appreciated by those skilled in the art,, can carry out various improvement, combination, sub-portfolio and replacement, as long as they are in the scope of claims or its equivalent according to design needs and other factors.
Claims (8)
1, a kind of interconnection structure that is used for display device comprises:
Driver provides video data from this driver, and
Interconnection material has the many signal line that are arranged in parallel, and provides video data by these signal wires from described driver, wherein
Rearrange via interconnection material from wherein transmitting the signal wire of video data, make alternately to be offered the neighbor or the pixel groups of display device, thereby come display image according to the brightness that is suitable for video data via the video data of the signal wire that in interconnection material, has bigger inductance element influence with via the video data of the signal wire that in interconnection material, has smaller inductance element influence.
2, according to the interconnection structure that is used for display device of claim 1, also comprise:
Substrate is inserted between display device and the interconnection material.
3, according to the interconnection structure that is used for display device of claim 1, wherein
Neighbor or pixel groups comprise at least one in three pixels that form red, green and blue display unit.
4, according to the interconnection structure that is used for display device of claim 1, wherein
Between driver and interconnection material, rearrange from it and transmit many signal line of video data, thereby will offer respective pixel with the video data that employed video data is identical under the situation that does not rearrange signal wire to interconnection material.
5, according to the interconnection structure that is used for display device of claim 1, wherein
Rearrange from its many signal line at the driver place, thereby will offer respective pixel with the video data that employed video data is identical under the situation that does not rearrange signal wire to interconnection material transmission video data.
6, according to the interconnection structure that is used for display device of claim 1, wherein
Display device is a liquid crystal indicator, and it comprises the transparency carrier that has transparency electrode on it, and this transparency carrier has the driving substrate of the pixel electrode of matrix form on it, puts into liquid crystal between two substrates.
7, according to the interconnection structure that is used for display device of claim 5 or 6, wherein
Display device is the liquid crystal indicator with active matrix drive system, and this active matrix drive system adopts the silicon substrate that comprises a plurality of metal levels that form on it as driving substrate, and
Rearrange many signal line, thereby utilize a plurality of metal levels to form some signal wire so that do not disturb other signal wire.
8, a kind of projection display apparatus comprises:
Optic modulating device, this optic modulating device of rayed that sends from light source, and use this optic modulating device, modulate described light based on video data, wherein
Optic modulating device is used for display device, provides video data from driver to this display device via the interconnection material with the many signal line that are arranged in parallel, and this display device shows to have the well-lit image according to the level of video data, and
Rearrange via transmitting the signal wire of video data, thereby make via the video data of the signal wire that in interconnection material, has bigger inductance element influence and alternately offered the neighbor or the pixel groups of optic modulating device via the video data of the signal wire that in interconnection material, has smaller inductance element influence from its interconnection material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP009004/06 | 2006-01-17 | ||
| JP2006009004 | 2006-01-17 | ||
| JP336059/06 | 2006-12-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101078825A CN101078825A (en) | 2007-11-28 |
| CN100555035C true CN100555035C (en) | 2009-10-28 |
Family
ID=38906372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101288938A Expired - Fee Related CN100555035C (en) | 2006-01-17 | 2007-01-17 | The interconnection structure of display device and projection display apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100555035C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI565039B (en) * | 2016-05-30 | 2017-01-01 | 友達光電股份有限公司 | Flexible pixel array substrate and flexible display panel |
-
2007
- 2007-01-17 CN CNB2007101288938A patent/CN100555035C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101078825A (en) | 2007-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7728802B2 (en) | Arrangements of color pixels for full color imaging devices with simplified addressing | |
| KR100887217B1 (en) | Display device | |
| CN101354504B (en) | Stacked LCD unit | |
| CN100583218C (en) | Image degradation correction in novel liquid crystal displays with split blue subpixels | |
| US5781164A (en) | Matrix display systems | |
| US10573220B2 (en) | Display panel and electronic device for displaying in different display modes | |
| CN100371978C (en) | Liquid crystal display and driving method thereof | |
| RU2487379C1 (en) | Stereoscopic display device | |
| US7199775B2 (en) | Display device array substrate and display device | |
| US8724039B2 (en) | Hybrid multiplexed 3D display and displaying method thereof | |
| US20020105506A1 (en) | Image display system and image information transmission method | |
| US11727858B2 (en) | Display driver IC (DDIC) backplane for scanning microLED array | |
| KR20010091912A (en) | Liquid crystal display device | |
| JP2003107472A (en) | Image display device | |
| US20120092573A1 (en) | Hybrid multiplexed 3d display and displaying method thereof | |
| EP1772848B1 (en) | Liquid crystal display device and method of driving such a display device | |
| KR100492832B1 (en) | Display apparatus | |
| JP4386066B2 (en) | Wiring structure for display device and projection display device | |
| US20160133200A1 (en) | Display device | |
| US9470900B2 (en) | Display unit, display driving circuit, and display driving method | |
| CN114945972B (en) | Display device and driving method thereof | |
| CN100555035C (en) | The interconnection structure of display device and projection display apparatus | |
| US20130063332A1 (en) | Display device, display method, and electronic apparatus | |
| CN100405453C (en) | Electrooptical device and driving method thereof, and electronic equipment | |
| KR20050074541A (en) | Swept illumination to reduce lcd lag in front and rear projection display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20160117 |
|
| EXPY | Termination of patent right or utility model |