Projection light machine and projection equipment

Abstract

The present invention provides a projection optical machine and a projection device. The projection optical machine includes a plurality of liquid crystal panels; each liquid crystal panel includes a data driving chip and a plurality of binding ends for displaying signals of different colors; the data driving chip of each liquid crystal panel is bound and connected to the binding end of one of the color display signals; the colors of the display signals of the binding ends to which the data driving chips of different liquid crystal panels are bound and connected are different. The projection optical machine realizes the splitting of different color signals in the display video signal at the liquid crystal panel end, so that the mainboard card end does not need to perform video signal splitting and transcoding and decoding, which greatly reduces the purchase and use costs of the projection optical machine.

Description

Technical Field

[0001] The present invention belongs to the field of display technology, and in particular relates to a projection optical machine and a projection device. Background Art

[0002] At present, the solution for 3LCD (i.e., 3 LCD panels) projectors to achieve color picture projection is: the three LCD panels all use the same traditional LCD screen. When the projector is working, the video signal containing the color RGB (red, green, blue) signal is first split into R (red), G (green), and B (blue) signals on the mainboard card end, and then the R (red), G (green), and B (blue) signals are transcoded and decoded on the mainboard card end, and finally the transcoded and decoded R (red), G (green), and B (blue) signals are respectively transmitted to one LCD panel to achieve color picture projection of the projector.

[0003] However, the cost of purchasing and using the technology for video signal splitting and transcoding on the motherboard and card side is relatively high. Summary of the invention

[0004] The present invention aims at the problem of high cost of video signal splitting and transcoding and decoding at the mainboard card end, and provides a projection optical machine and a projection device. The projection optical machine realizes the splitting of different color signals in the display video signal at the liquid crystal panel end, so that the mainboard card end does not need to perform video signal splitting and transcoding and decoding, which greatly reduces the purchase and use cost of the projection optical machine.

[0005] The present invention provides a projection optical machine, comprising a plurality of liquid crystal panels;

[0006] Each of the liquid crystal panels includes a data driving chip and a plurality of binding terminals for display signals of different colors;

[0007] The data driving chip of each of the liquid crystal panels is bound and connected to a binding end of one of the color display signals;

[0008] The colors of display signals of the binding ends to which the data driving chips of different liquid crystal panels are bound are different.

[0009] Optionally, each of the liquid crystal panels includes a plurality of pixels and a plurality of data lines; the plurality of pixels are arranged in an array;

[0010] In the array, one of the data lines is connected to at least one column of pixels;

[0011] There are multiple binding ends of a color display signal to which the data driving chip in the liquid crystal panel is bound and connected;

[0012] The plurality of data lines are connected in a one-to-one correspondence with the binding ends of a color display signal to which the data driving chip in the liquid crystal panel is bound and connected.

[0013] Optionally, the liquid crystal panel includes a first liquid crystal panel, a second liquid crystal panel and a third liquid crystal panel;

[0014] The first liquid crystal panel includes binding ends for red, green and blue display signals, and the data driving chip of the first liquid crystal panel is bound and connected to the binding end for the red display signal;

[0015] The second liquid crystal panel includes binding ends for red, green and blue display signals, and the data driving chip of the second liquid crystal panel is bound and connected to the binding end for the green display signal;

[0016] The third liquid crystal panel includes binding ends for red, green and blue display signals, and the data driving chip of the third liquid crystal panel is bound and connected to the binding end for the blue display signal.

[0017] Optionally, the pixel comprises a sub-pixel;

[0018] Alternatively, the pixel includes three sub-pixels; the three sub-pixels are arranged along a row direction of the pixel array;

[0019] In the pixel array, the plurality of data lines are connected to the plurality of columns of sub-pixels in a one-to-one correspondence.

[0020] Optionally, the pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in sequence along a row direction of the pixel array;

[0021] In the pixel array, the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively arranged along the column direction of the pixel array;

[0022] In the first liquid crystal panel, the plurality of data lines are connected to the plurality of columns of the first sub-pixels in a one-to-one correspondence;

[0023] In the second liquid crystal panel, the plurality of data lines are connected to the plurality of columns of the second sub-pixels in a one-to-one correspondence;

[0024] In the third liquid crystal panel, the plurality of data lines are connected to the plurality of columns of the third sub-pixels in a one-to-one correspondence.

[0025] Optionally, it further includes a main board, a plurality of flexible circuit boards and a plurality of peripheral circuit boards; one of the liquid crystal panels is correspondingly connected to one of the flexible circuit boards and one of the peripheral circuit boards;

[0026] The flexible circuit board is bent from the display side of the liquid crystal panel to the back side thereof; the peripheral circuit board is located on the back side of the liquid crystal panel; the data driving chip is arranged on the peripheral circuit board;

[0027] The binding end of the multiple different color display signals of the liquid crystal panel is bound and connected to an interface end of the flexible circuit board; the other interface end of the flexible circuit board is bound and connected to the output interface end of the data driving chip on the peripheral circuit board;

[0028] The input interface end of the data driving chip on the peripheral circuit board is bound and connected to the main board.

[0029] Optionally, a power distributor is also included, which is connected between the main board and the peripheral circuit board and is used to distribute the video signal output by the main board to each of the liquid crystal panels to ensure that the signals received by each of the liquid crystal panels are the same video signal output by the main board.

[0030] Optionally, it further comprises a plurality of light sources, corresponding to the plurality of liquid crystal panels one by one and located on the back side of the liquid crystal panels; and used for providing display backlight for the liquid crystal panels;

[0031] Different light sources emit light of different colors;

[0032] The color of the light emitted by the light source is the same as the color of the display signal of the binding end to which the data driving chip of the corresponding liquid crystal panel is bound.

[0033] Optionally, the liquid crystal panel comprises a first transparent substrate, liquid crystal and a second transparent substrate, and the first transparent substrate and the second transparent substrate are aligned to form a cell gap;

[0034] The liquid crystal is filled in the cell gap;

[0035] Electrodes are provided in the first transparent substrate or the first transparent substrate and the second transparent substrate. The electric field generated by energizing the electrodes can deflect the liquid crystal, thereby controlling the transmittance of light emitted by the light source.

[0036] The present invention also provides a projection device, comprising the above-mentioned projection optical machine.

[0037] The beneficial effects of the present invention are as follows: the projection optical machine provided by the present invention makes the colors of the display signals of the binding ends bound and connected to the data driving chips of different liquid crystal panels different, and the colors of the display signals transmitted by the binding ends on each liquid crystal panel are different; different liquid crystal panels make the binding ends bound and connected to their data driving chips different, so that one liquid crystal panel only receives a display signal of one color through the binding end; thereby different liquid crystal panels display display signals of different colors; and further, the splitting of different color signals in the display video signal at the liquid crystal panel end is realized, so that the mainboard card end does not need to perform video signal splitting and transcoding and decoding, etc., which greatly reduces the purchase and use costs of the projection optical machine.

[0038] The projection device provided by the present invention reduces the technical cost of the projection device by adopting the above-mentioned projection optical machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structural principle of a projection optical machine in an embodiment of the present invention;

[0040] Figure 2 It is a top view of the structure of the liquid crystal panel binding area in the projection optical machine according to an embodiment of the present invention;

[0041] Figure 3 A schematic diagram of the arrangement and connection of pixels in a liquid crystal panel according to an embodiment of the present invention;

[0042] Figure 4 Another schematic diagram of the arrangement and connection of pixels in a liquid crystal panel according to an embodiment of the present invention;

[0043] Figure 5a-5c It is another arrangement and connection diagram of pixels in a liquid crystal panel according to an embodiment of the present invention;

[0044] Figure 6 is a schematic diagram of corresponding arrangements of a light source and a liquid crystal panel in an embodiment of the present invention;

[0045] Figure 7 Schematic diagram of the cross-sectional structure of a liquid crystal panel in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, a projection optical machine and a projection device of the present invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] In view of the problem that the cost of splitting and transcoding the video signal on the mainboard card is high, an embodiment of the present invention provides a projection optical machine, such as Figure 1 and Figure 2As shown, it includes multiple liquid crystal panels 1; each liquid crystal panel 1 includes a data driving chip 2 and a plurality of binding terminals 3 for displaying signals of different colors; the data driving chip 2 of each liquid crystal panel 1 is bound and connected to the binding terminal 3 of one color display signal; the colors of the display signals bound and connected to the binding terminals 3 of the data driving chips 2 of different liquid crystal panels 1 are different.

[0048] Among them, by making the colors of the display signals bound and connected to the binding terminals 3 of the data driving chips 2 of different liquid crystal panels 1 different, the colors of the display signals transmitted by the binding terminals 3 on each liquid crystal panel 1 are different; by making the binding terminals 3 to which the data driving chips 2 of different liquid crystal panels 1 are bound and connected different, one liquid crystal panel 1 only receives a display signal of one color (i.e., a data signal) through the binding terminal 3; thereby realizing that different liquid crystal panels 1 display display signals of different colors; and then realizing the splitting of different color signals in the color video signal at the end of the liquid crystal panel 1, so that the main board card end does not need to perform video signal splitting and transcoding and decoding, etc., which greatly reduces the purchase and use cost of the projection optical machine. Different liquid crystal panels 1 display display signals of different colors, and each liquid crystal panel 1 can split a color signal from the color video signal, and realize its grayscale adjustment and display through the liquid crystal panel 1. After the subsequent combination of the different color display signals displayed by the different liquid crystal panels 1, the color video screen display of the projection optical machine is realized.

[0049] Optionally, in this embodiment, if Figure 3 As shown, each liquid crystal panel 1 includes a plurality of pixels 101 and a plurality of data lines 102; the plurality of pixels 101 are arranged in an array; in the array, a data line 102 connects at least one column of pixels 101; there are a plurality of binding terminals 3 of a color display signal bound and connected to a data driving chip in the liquid crystal panel 1; the plurality of data lines 102 are connected one-to-one with the binding terminals 3 of a color display signal bound and connected to a data driving chip in the liquid crystal panel 1.

[0050] Among them, in different driving modes of the liquid crystal panel 1, one data line 102 can be connected to at least one column of pixels 101. No matter how many columns of pixels 101 are connected to one data line 102, the load carried by one data line 102 is within the allowable value range. For example, in the single-gate driving, dual-gate driving, single-side driving, and double-side driving modes of the liquid crystal panel 1, the number of columns of pixels 101 connected to one data line 102 is different, and the details are not repeated one by one.

[0051] Optionally, in this embodiment, if Figure 1The liquid crystal panel 1 includes a first liquid crystal panel 11, a second liquid crystal panel 12 and a third liquid crystal panel 13; the first liquid crystal panel 11 includes binding ends for red, green and blue display signals, and the data driving chip 2 of the first liquid crystal panel 11 is bound and connected to the binding end 31 of the red display signal; the second liquid crystal panel 12 includes binding ends for red, green and blue display signals, and the data driving chip 2 of the second liquid crystal panel 12 is bound and connected to the binding end 32 of the green display signal; the third liquid crystal panel 13 includes binding ends for red, green and blue display signals, and the data driving chip 2 of the third liquid crystal panel 13 is bound and connected to the binding end 33 of the blue display signal.

[0052] Among them, in the first liquid crystal panel 11, only the binding end 31 of the red display signal is bound and connected to the data driver chip 2 therein; the binding ends of the green and blue display signals are suspended, that is, they are not bound and connected to the data driver chip 2 therein. In the second liquid crystal panel 12, only the binding end 32 of the green display signal is bound and connected to the data driver chip 2 therein; the binding ends of the red and blue display signals are suspended, that is, they are not bound and connected to the data driver chip 2 therein. In the third liquid crystal panel 13, only the binding end 33 of the blue display signal is bound and connected to the data driver chip 2 therein; the binding ends of the green and red display signals are suspended, that is, they are not bound and connected to the data driver chip 2 therein.

[0053] Optionally, in this embodiment, if Figure 3 , the pixel 101 includes a sub-pixel 100 ; in the pixel array, a plurality of data lines 102 are connected to a plurality of columns of sub-pixels 100 in a one-to-one correspondence.

[0054] Alternatively, if Figure 4 As shown, the pixel 101 includes three sub-pixels 100; the three sub-pixels 100 are arranged along the row direction X of the pixel array; in the pixel array, a plurality of data lines 102 are connected to a plurality of columns of sub-pixels 100 in a one-to-one correspondence. In this way, the liquid crystal panel 1 can achieve a higher resolution.

[0055] Alternatively, if Figure 5a-5cAs shown, the pixel 101 includes a first sub-pixel 103, a second sub-pixel 104 and a third sub-pixel 105; the first sub-pixel 103, the second sub-pixel 104 and the third sub-pixel 105 are arranged in sequence along the row direction X of the pixel array; in the pixel array, the first sub-pixel 103, the second sub-pixel 104 and the third sub-pixel 105 are arranged respectively along the column direction Y of the pixel array; in the first liquid crystal panel 11, a plurality of data lines 102 are connected to a plurality of columns of first sub-pixels 103 in a one-to-one correspondence; in the second liquid crystal panel 12, a plurality of data lines 102 are connected to a plurality of columns of second sub-pixels 104 in a one-to-one correspondence; in the third liquid crystal panel 13, a plurality of data lines 102 are connected to a plurality of columns of third sub-pixels 105 in a one-to-one correspondence. That is, the second sub-pixel 104 and the third sub-pixel 105 in the first liquid crystal panel 11 are not lit; the first sub-pixel 103 and the third sub-pixel 105 in the second liquid crystal panel 12 are not lit; the first sub-pixel 103 and the second sub-pixel 104 in the third liquid crystal panel 13 are not lit.

[0056] Above Figure 3 , Figure 4 , Figure 5a-5c The liquid crystal panel 1 can be customized, and the first liquid crystal panel 11, the second liquid crystal panel 12 and the third liquid crystal panel 13 can be simultaneously prepared by a complete set of mask templates, without increasing the mask template cost during the preparation process, thereby greatly reducing the preparation cost of the projection optical machine.

[0057] Alternatively, if Figure 1 The projection optical machine also includes a main board 4, multiple flexible circuit boards (not shown in the figure) and multiple peripheral circuit boards (not shown in the figure); one liquid crystal panel 1 is correspondingly connected to one flexible circuit board and one peripheral circuit board; the flexible circuit board is bent from the display side of the liquid crystal panel 1 to its back side; the peripheral circuit board is located on the back side of the liquid crystal panel 1; the data driving chip 2 is arranged on the peripheral circuit board; the binding end 3 of multiple different color display signals of the liquid crystal panel 1 is bound and connected to an interface end of the flexible circuit board; the other interface end of the flexible circuit board is bound and connected to the output interface end of the data driving chip 2 on the peripheral circuit board; the input interface end of the data driving chip 2 on the peripheral circuit board is bound and connected to the main board 4.

[0058] Alternatively, if Figure 2 As shown, the projection optical machine may not be provided with multiple peripheral circuit boards. The data driver chip 2 and the binding terminals 3 of multiple different color display signals are both arranged in the binding area of ​​the liquid crystal panel 1, and the output interface terminal of the data driver chip 2 is directly bound and connected to the binding terminal 3 of one color display signal. The input interface terminal of the data driver chip 2 is bound and connected to the mainboard through a flexible circuit board (not shown in the figure).

[0059] Optionally, the projection optical machine further includes a power distributor 6, which is connected between the main board 4 and the peripheral circuit board, and is used to distribute the video signal output by the main board 4 to each liquid crystal panel 1, so as to ensure that the signals received by each liquid crystal panel 1 are the same video signal output by the main board 4. The power distributor 6 can divide one channel of the video signal output by the main board 4 into multiple channels that are completely identical, so as to provide the same video signal to each liquid crystal panel 1 respectively.

[0060] Optionally, if the projection optical machine is not provided with a plurality of peripheral circuit boards, the power distributor 6 may also be connected between the main board 4 and the flexible circuit board.

[0061] Alternatively, if Figure 6 As shown, the projection optical machine also includes multiple light sources 5, which correspond one-to-one to multiple liquid crystal panels 1 and are located on the back side of the liquid crystal panel 1; they are used to provide display backlight for the liquid crystal panel 1; different light sources 5 emit light of different colors; the color of the light emitted by the light source 5 is the same as the color of the display signal of the binding end to which the data driver chip of the corresponding liquid crystal panel 1 is bound.

[0062] Alternatively, if Figure 7 As shown, the liquid crystal panel 1 includes a first transparent substrate 106, a liquid crystal 107 and a second transparent substrate 108, the first transparent substrate 106 and the second transparent substrate 108 form a cell gap; the liquid crystal 107 is filled in the cell gap; the first transparent substrate 106 or the first transparent substrate 106 and the second transparent substrate 108 are provided with electrodes, and the electric field generated by the electrodes being energized can deflect the liquid crystal 107, thereby controlling the transmittance of light emitted by the light source. That is, the plurality of liquid crystal panels 1 are all black and white screens, and the opening and closing of the sub-pixels thereon can only realize the control of the amount of light passing through the liquid crystal panel 1, thereby controlling the transmittance of light emitted by the corresponding light source 5, and then realizing the brightness or grayscale control of a color signal displayed by the liquid crystal panel 1.

[0063] When the electrodes are all disposed on the first transparent substrate 106, the liquid crystal panel may be an ADS (Advanced Super Dimension Switch) type liquid crystal panel or an IPS (In-Plane Switching) type liquid crystal panel. When the electrodes are disposed on the first transparent substrate 106 and the second transparent substrate 108, respectively, the liquid crystal panel may be a TN (Twisted Nematic) type liquid crystal panel. The specific implementation methods are all conventional technologies and will not be described in detail here.

[0064] The projection optical machine provided in the present embodiment makes the colors of the display signals of the binding ends connected to the data driving chips of different liquid crystal panels different, and the colors of the display signals transmitted by the binding ends on each liquid crystal panel are different; different liquid crystal panels make their data driving chips bound to different binding ends, so that one liquid crystal panel only receives display signals of one color through the binding end; thereby different liquid crystal panels display display signals of different colors; and further, the splitting of different color signals in the display video signal at the liquid crystal panel end is realized, so that the mainboard card end no longer needs to perform video signal splitting and transcoding and decoding, thereby greatly reducing the purchase and use costs of the projection optical machine.

[0065] An embodiment of the present invention further provides a projection device, comprising the projection optical engine in the above embodiment.

[0066] By adopting the projection optical engine in the above embodiment, the technical cost of the projection equipment is reduced.

[0067] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A projection optical machine, comprising a plurality of liquid crystal panels; Each of the liquid crystal panels includes a data driving chip and a plurality of binding terminals for display signals of different colors; It is characterized in that The data driving chip of each of the liquid crystal panels is connected to a binding end of a color display signal among the binding ends of the plurality of different color display signals; The colors of display signals of the binding terminals to which the data driving chips of different liquid crystal panels are bound are different; It also includes a main board and a plurality of flexible circuit boards; one of the liquid crystal panels is connected to one of the flexible circuit boards; The flexible circuit board is bent from the display side of the liquid crystal panel to the back side thereof; the data driving chip and the binding ends of the plurality of different color display signals are both arranged in the binding area of ​​the liquid crystal panel; The output interface end of the data driving chip is directly bound and connected to the binding end of one of the color display signals; the input interface end of the data driving chip is bound and connected to the main board through the flexible circuit board.

2. The projection optical machine according to claim 1, characterized in that: Each of the liquid crystal panels includes a plurality of pixels and a plurality of data lines; the plurality of pixels are arranged in an array; In the array, one of the data lines is connected to at least one column of pixels; There are multiple binding ends of a color display signal to which the data driving chip in the liquid crystal panel is bound and connected; The plurality of data lines are connected in a one-to-one correspondence with the binding ends of a color display signal to which the data driving chip in the liquid crystal panel is bound and connected.

3. The projection optical machine according to claim 2, characterized in that: The liquid crystal panel includes a first liquid crystal panel, a second liquid crystal panel and a third liquid crystal panel; The first liquid crystal panel includes binding ends for red, green and blue display signals, and the data driving chip of the first liquid crystal panel is bound and connected to the binding end for the red display signal; The second liquid crystal panel includes binding ends for red, green and blue display signals, and the data driving chip of the second liquid crystal panel is bound and connected to the binding end for the green display signal; The third liquid crystal panel includes binding ends for red, green and blue display signals, and the data driving chip of the third liquid crystal panel is bound and connected to the binding end for the blue display signal.

4. The projection optical machine according to claim 3, characterized in that: The pixel comprises a sub-pixel; Alternatively, the pixel includes three sub-pixels; the three sub-pixels are arranged along a row direction of the pixel array; In the pixel array, the plurality of data lines are connected to the plurality of columns of sub-pixels in a one-to-one correspondence.

5. The projection optical machine according to claim 3, characterized in that: The pixel includes a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in sequence along a row direction of the pixel array; In the pixel array, the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively arranged along the column direction of the pixel array; In the first liquid crystal panel, the plurality of data lines are connected to the plurality of columns of the first sub-pixels in a one-to-one correspondence; In the second liquid crystal panel, the plurality of data lines are connected to the plurality of columns of the second sub-pixels in a one-to-one correspondence; In the third liquid crystal panel, the plurality of data lines are connected to the plurality of columns of the third sub-pixels in a one-to-one correspondence.

6. The projection optical machine according to claim 1, characterized in that: It also includes a power distributor connected between the mainboard and the flexible circuit board, which is used to distribute the video signal output by the mainboard to each of the liquid crystal panels to ensure that the signals received by each of the liquid crystal panels are the same video signal output by the mainboard.

7. The projection optical machine according to claim 6, characterized in that: It also includes a plurality of light sources, corresponding to the plurality of liquid crystal panels one by one and located on the back side of the liquid crystal panels; and used to provide display backlight for the liquid crystal panels; Different light sources emit light of different colors; The color of the light emitted by the light source is the same as the color of the display signal of the binding end to which the data driving chip of the corresponding liquid crystal panel is bound.

8. The projection optical machine according to claim 7, characterized in that: The liquid crystal panel comprises a first transparent substrate, liquid crystal and a second transparent substrate, wherein the first transparent substrate and the second transparent substrate are aligned to form a cell gap; The liquid crystal is filled in the cell gap; Electrodes are provided in the first transparent substrate or the first transparent substrate and the second transparent substrate. The electric field generated by energizing the electrodes can deflect the liquid crystal, thereby controlling the transmittance of light emitted by the light source.

9. A projection device, characterized in that: A projection optical machine comprising any one of claims 1-8.

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