TWI484254B - Mother board of light modulating panel, light modulating panel and stereoscopic display device - Google Patents

Description

Motherboard, light modulation panel and stereo display device of light modulation panel

The invention relates to a mother board, a light modulation panel and a stereoscopic display device of a light modulation panel, in particular to a mother board, a light modulation panel and a stereoscopic display device with a light modulation panel sharing a test line.

Light modulating panels have been widely used in display devices due to their utility as tunable dimming properties. For example, the liquid crystal display panel has the function of modulating the polarization state of the light, that is, a light modulation panel. In general, the optical modulation panel is fabricated by making a plurality of optical modulation panels before a motherboard, and then cutting the motherboard into a plurality of optical modulation panels. Since each optical modulation panel must be tested before cutting, to ensure that the electrode pattern on the optical modulation panel has no short circuit or open circuit defect, electrode patterns respectively corresponding to the respective light modulation panels must be formed on the mother board. Electrically connected to the test line for testing. However, since a certain amount of space must be reserved between the test line and the test line to ensure effective exposure, the utilization of the motherboard cannot be improved, so that the cost of the optical modulation panel cannot be reduced.

One of the objects of the present invention is to provide a mother board, a light modulation panel and a stereoscopic display device of a light modulation panel to reduce cost.

A preferred embodiment of the present invention provides a motherboard for a light modulation panel, including a substrate, a plurality of optical modulation panels, a plurality of first test lines, and a plurality of second test lines. The light modulation panel is disposed on the substrate and arranged in an array, and each of the light modulation panels includes a plurality of first electrodes and a plurality of second electrodes. The first test line is disposed on the substrate, wherein each of the first test lines is electrically connected to the first electrode or the second electrode of the first and last rows of the light modulation panel of the array. The second test line is disposed on the substrate, wherein each of the second test lines is disposed between two adjacent light modulation panels in the same column of the array, and each of the second test lines and two adjacent light modulation panels The first electrode of one of the electrodes is electrically connected to the second electrode of the other one.

Another preferred embodiment of the present invention provides a light modulation panel including a substrate, a plurality of first electrodes, a plurality of second electrodes, a plurality of first conductive patterns, and a plurality of second conductive patterns. The first electrode is disposed on the substrate, and the second electrode is disposed on the substrate and electrically separated from the first electrode. The first conductive pattern is disposed on the substrate, wherein each of the first conductive patterns is electrically connected to one end of the corresponding first electrode. The second conductive pattern is disposed on the substrate, wherein each of the second conductive patterns respectively corresponds to one end of the second electrode and is electrically separated.

Another preferred embodiment of the present invention provides a stereoscopic display device comprising the above-described optical modulation panel, and a display panel located below the light modulation panel.

The present invention will be further understood by those of ordinary skill in the art to which the present invention pertains. .

Please refer to Figure 1. FIG. 1 is a schematic view showing a mother board of a light modulation panel according to a preferred embodiment of the present invention. As shown in FIG. 1 , the motherboard 1 of the optical modulation panel of the present embodiment includes a substrate 10 , a plurality of optical modulation panels 12 , a plurality of first test lines 21 , and a plurality of second test lines 22 . The substrate 10 is, for example, a transparent substrate, but is not limited thereto. The light modulation panel 12 is disposed on the substrate 10 and arranged in an array, and each of the light modulation panels 12 includes a plurality of first electrodes 12A and a plurality of second electrodes 12B. The first test line 21 is disposed on the substrate 10, wherein each of the first test lines 21 is electrically connected to the first electrode 12A or the second electrode 12B of the first and last rows of the light modulation panel 12 of the array. The second test line 22 is disposed on the substrate 10, wherein each of the second test lines 22 is disposed between two adjacent light modulation panels 12 in the same column of the array, and each of the second test lines 22 is coupled with two phases. The first electrode 12A of one of the adjacent light modulation panels 12 is electrically connected to the second electrode 12B of the other one.

In this embodiment, the motherboard 1 of the optical modulation panel further includes a plurality of first test pads 31, a plurality of second test pads 32 and a plurality of third test pads 33, wherein each of the first test lines 21 is coupled to one The first test pad 31 is electrically connected, and the first test pad 31 is used to test the first electrode 12A or the second electrode 12B of the corresponding light modulation panel 12 through the first test pad 31; each second test line The second test pad 32 is electrically connected to the corresponding second test pad 32 and the third test pad 33, and the second test pad 32 is used to test the first electrode 12A of the corresponding light modulation panel 12 through the second test line 22. The third test pad 33 is used to test the second electrode 12B of the other corresponding light modulation panel 12 through the second test line 22. The first electrode 12A and the second electrode 12B of each of the light modulation panels 12 respectively include a strip electrode, and the first electrode 12A and the second electrode 12B are alternately arranged with each other. In addition, the first electrode 12A and the second electrode 12B may respectively include a transparent electrode, and the first test line 21 and the second test line 22 may respectively include a metal wire, but not limited thereto.

As shown in FIG. 1, in the embodiment, the motherboard 1 of the optical modulation panel includes two first test lines 21, wherein one of the first test lines 21 is connected to the optical modulation panel 12 located at the leftmost side of the array. The first electrode 12A is electrically connected to the other, and the other first test line 21 is electrically connected to the second electrode 12B of the optical modulation panel 12 located at the far right of the array, but is not limited thereto. For example, one of the first test lines 21 may be electrically connected to the second electrode 12B of the light modulation panel 12 located at the leftmost side of the array, and the other first test line 21 is connected to the rightmost light of the array. The first electrode 12A of the variable panel 12 is electrically connected. In addition, each of the second test lines 22 is respectively located between two adjacent light modulation panels 12, and is electrically connected to the first electrode 12A of the light modulation panel 12 at one side thereof, and is located at the other side thereof. The second electrode 12B of the light modulation panel 12 on one side is electrically connected. That is, the two adjacent optical modulation panels 12 share a second test line 22, wherein one of the optical modulation panels 12 can test the first electrode 12A by the second test line 22, and the other optical modulation panel The second electrode 12B can be tested by the second test line 22.

All the light modulation panels 12 included in the motherboard 1 of the light modulation panel need to be electrically measured. Try to confirm whether the first electrode 12A and the second electrode 12B are normal without short circuit, open circuit or other defects. Once the electrical properties are confirmed, the subsequent cutting process will be performed to cut the mother board 1 of the light modulation panel into a plurality of light modulation panels 12, and if the electrical abnormality is confirmed, the repair process may be performed before the cutting process or cutting. After the process, the abnormal light modulation panel 12 is scrapped. In this embodiment, since two adjacent optical modulation panels 12 share a second test line 22, the layout space required for the test lines can be greatly reduced, and the mother board 1 of the optical modulation panel is effectively increased. Use rate to achieve economic cutting results. In addition, in this embodiment, each of the second test lines 22 is disposed along the row direction C, and has a wrap pattern in a column direction R, that is, the second test line 22 is viewed from the top view direction. The bow-shaped" wraps, which mainly extends in the row direction C, but is folded back and forth in the column direction R and with the first electrode 12A of the light modulation panel 12 on one side thereof and the light on the other side thereof The second electrode 12B of the modulation panel 12 is electrically connected. When the cutting process is performed, the mother board 1 of the light modulation panel is cut along the cutting line to form a plurality of separate light modulation panels 12, and the winding pattern of the second test line 22 can be made during the cutting process. Even if the cutting line is deviated, the second test line 22 can be effectively cut off effectively. Similarly, the first test line 21 can also have a wrap pattern to improve the tolerance of the cutting process, but not limited thereto. For example, the first test line 21 may also have no wrap pattern.

Please refer to Figure 2. FIG. 2 is a schematic view showing a mother board of a light modulation panel according to another preferred embodiment of the present invention. As shown in FIG. 2, different from the foregoing embodiment, in the embodiment, the motherboard 1' of the optical modulation panel includes a plurality of first test pads 31 and a plurality of common test pads 34, wherein each first test line The first test pad 31 is electrically connected to the corresponding first test pad 31, and the first test pad 31 is used to test the first electrode 12A or the second electrode 12B of the corresponding light modulation panel 12 through the first test pad 31; The second test line 22 is electrically connected to a corresponding common test pad 34. In this embodiment, the second test line 22 is only electrically connected to the corresponding common test pad 34 and is not directly connected to other test pads. The common test pad 34 is used to test the first electrode 12A of a corresponding light modulation panel 12 and the second electrode 12B of another corresponding light modulation panel 12. Since the partially adjacent light modulation panel 12 can share the common test pad 34, the number of test pads on the substrate 10 can be reduced to further increase the usage rate of the mother board 1' of the light modulation panel.

Please refer to Figure 3 and refer to Figure 1 and Figure 2 together. FIG. 3 is a schematic diagram of a light modulation panel according to a preferred embodiment of the present invention. The optical modulation panel of the present embodiment is formed after the mother board of the optical modulation panel of FIG. 1 or FIG. 2 is subjected to a cutting process. As shown in FIG. 3, the optical modulation panel 12 of the present embodiment includes a substrate 10, a plurality of first electrodes 12A are disposed on the substrate 10, and a plurality of second electrodes 12B are disposed on the substrate 10 and coupled to the first electrode 12A. Electrically separated, a plurality of first conductive patterns 51 are disposed on the substrate i0, and a plurality of second conductive patterns 52 are disposed on the substrate 10. The first electrode 12A and the second electrode 12B are respectively a transparent electrode, and the first electrode 12A and the second electrode 12B are respectively strip electrodes and are alternately arranged with each other. The first conductive pattern 51 and the second conductive pattern 52 are part of the pattern of the first test line or the second test line of the mother board of the light modulation panel after the cutting process, and thus the first conductive pattern 51 and the second The conductive pattern 52 may be a metal conductive pattern. Each of the first conductive patterns 51 is electrically connected to one end of the corresponding first electrode 12A, and each of the second conductive patterns 52 is electrically separated from one end of the second electrode 12B. That is, for the light modulation panel 12, the first conductive pattern 51 may be the first one that is originally located on one side of the light modulation panel 12 and electrically connected to the first electrode 12A of the light modulation panel 12 a portion of the pattern left by the test line or the second test line after the cutting process, and the second conductive pattern 52 is originally located on one side of the light modulation panel 12 but not with the first electrode of the light modulation panel 12 The partial pattern left by the first test line or the second test line electrically connected to the 12A or the second electrode 12B after the cutting process. In addition, the first conductive pattern 51 and the second conductive pattern 52 may be located on the same side of the substrate 10 and form an alternately arranged wrap pattern, and are electrically separated from each other. In addition, the optical modulation panel 12 further includes a plurality of third conductive patterns 53 and a plurality of fourth conductive patterns 54, wherein each of the third conductive patterns 53 is electrically connected to the other end of the corresponding second electrode 12B, respectively, and Each of the fourth conductive patterns 54 corresponds to the other end of the first electrode 12A and is electrically separated. That is, for the optical modulation panel 12, the third conductive pattern 53 may be the first one on the other side of the optical modulation panel 12 and electrically connected to the second electrode 12B of the optical modulation panel 12 a portion of the pattern left by the test line or the second test line after the cutting process, and the fourth conductive pattern 54 is originally located on the other side of the light modulation panel 12 but not with the light modulation panel 12 A partial pattern left by the first test line or the second test line electrically connected to the one electrode 12A or the second electrode 12B after the cutting process. The third conductive pattern 53 and the fourth conductive pattern 54 are located on the other side of the substrate 10 and form an alternately arranged wrap pattern and are electrically separated from each other.

The optical modulation panel of the present invention can be a liquid crystal panel, which can be used as a display panel for display or a 2D/3D switch panel of a switchable stereoscopic display device, but is not limited thereto. Please refer to Figure 4 and Figure 5, and refer to Figure 3 together. 4 and 5 are schematic views of a 2D/3D switch panel according to a preferred embodiment of the present invention, wherein FIG. 4 is a top view of the 2D/3D switch panel, and FIG. A schematic cross-sectional view of the 2D/3D switch panel is shown. As shown in FIG. 4 and FIG. 5, the 2D/3D switch panel 40 of the present embodiment includes two light modulation panels 12, 12', and a liquid crystal layer 42 is disposed on the light modulation panels 12, 12'. between. The light modulation panels 12, 12' respectively include a substrate 10, 10', a plurality of first electrodes 12A, 12A', and a plurality of second electrodes 12B, 12B' electrically separated from the first electrodes 12A, 12A', and The first conductive pattern, the second conductive pattern, the third conductive pattern and the fourth conductive pattern shown in FIG. The first electrode 12A and the second electrode 12B of the light modulation panel 12 and the first electrode 12A' and the second electrode 12B' of the light modulation panel 12' cross each other and are independently driven to locally control the liquid crystal layer 42.

Please refer to Figure 6 and refer to Figure 4 and Figure 5 together. FIG. 6 is a schematic diagram of a stereoscopic display device according to a preferred embodiment of the present invention. As shown in FIG. 6, in the embodiment, the stereoscopic display device 50 includes a 2D/3D switch panel 40, a display panel 60, and a liquid crystal lens 70. The 2D/3D switch panel 40 is used to control the 2D display. Switching of a screen or a 3D display screen, which may include the light modulation panels 12, 12' and the liquid crystal layer 42 shown in FIGS. 4 and 5, and the 2D/3D switch panel 40 may make the stereoscopic display device 50 comprehensive. Or display a stereoscopic picture locally. The display panel 60 is disposed under the 2D/3D switch panel 40 for providing a display screen. The display panel 60 can be a variety of display panels, such as a liquid crystal display panel or an organic light emitting diode display panel, but is not limited thereto. The liquid crystal lens 70 is disposed above the 2D/3D changeover switch panel 40.

In summary, the two adjacent optical modulation panels on the motherboard of the optical modulation panel of the present invention share one test line, thereby reducing the layout space required for the test line, thereby achieving an economical cutting effect. cut costs. Further, the light modulation panel of the present invention can be applied to various types of display devices, for example, 2D/3D switch panel as a stereoscopic display device.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1. . . Motherboard of light modulation panel

10. . . Substrate

12‧‧‧Light Modification Panel

12A‧‧‧first electrode

12B‧‧‧second electrode

21‧‧‧First test line

22‧‧‧Second test line

31‧‧‧First test pad

32‧‧‧Second test pad

33‧‧‧ Third test pad

34‧‧‧Common test pad

51‧‧‧First conductive pattern

52‧‧‧Second conductive pattern

53‧‧‧ Third conductive pattern

54‧‧‧fourth conductive pattern

40‧‧‧2D/3D switch panel

42‧‧‧Liquid layer

50‧‧‧ Stereo display device

60‧‧‧ display panel

10'‧‧‧Substrate

12'‧‧‧Light Modification Panel

12A'‧‧‧ first electrode

12B’‧‧‧second electrode

70‧‧‧ liquid crystal lens

C‧‧‧ directions

R‧‧‧ direction

FIG. 1 is a schematic view showing a mother board of a light modulation panel according to a preferred embodiment of the present invention.

FIG. 2 is a schematic view showing a mother board of a light modulation panel according to another preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of a light modulation panel according to a preferred embodiment of the present invention.

FIG. 4 is a top plan view of a 2D/3D switch panel according to a preferred embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the 2D/3D switch panel of Fig. 4.

FIG. 6 is a schematic diagram of a stereoscopic display device according to a preferred embodiment of the present invention.

1. . . Motherboard of light modulation panel

10. . . Substrate

12. . . Light modulation panel

12A. . . First electrode

12B. . . Second electrode

twenty one. . . First test line

twenty two. . . Second test line

31. . . First test pad

32. . . Second test pad

33. . . Third test pad

C. . . Row direction

R. . . Column direction

Claims (14)

A mother board of a light modulation panel, comprising: a substrate; a plurality of light modulation panels disposed on the substrate and arranged in an array, each of the light modulation panels comprising a plurality of first electrodes and a plurality of second electrodes; a plurality of first test lines disposed on the substrate, wherein each of the first test lines and the first electrodes or the second electrodes of the optical modulation panel of the first row and the last row of the array are respectively And a plurality of second test lines disposed on the substrate, wherein each of the second test lines is disposed between two adjacent ones of the optical modulation panels in the same column of the array, and each of the The second test line is electrically connected to the first electrodes of one of the two adjacent ones of the optical modulation panels and the second electrodes of the other one of the two test leads, wherein each of the second test lines is along Arranging in a row direction and having a winding pattern in a column direction, wherein a cutting line overlaps the winding pattern such that the first electrodes of one of the two adjacent ones of the optical modulation panels are along The cutting line does not charge each other after a cutting process Such a second electrode, and the two adjacent such light modulation panel where the other is not electrically connected to each other after the dicing process carried out along the cutting line. The motherboard of the optical modulation panel of claim 1, further comprising a plurality of first test pads, wherein each of the first test wires is electrically connected to a corresponding first test pad, and the first test a pad for testing the first electrical power of the corresponding light modulation panel A pole or such second electrode. The motherboard of the optical modulation panel of claim 2, further comprising a plurality of second test pads and a plurality of third test pads, wherein each of the second test wires is simultaneously associated with the second test pad The third test pad is electrically connected, and the second test pad is configured to test the first electrodes of the corresponding light modulation panel through the second test line, and the third test pad is used to transmit The second test line tests the other second electrodes of the corresponding light modulation panel. The motherboard of the optical modulation panel of claim 2, further comprising a plurality of common test pads, wherein each of the second test wires is electrically connected to a corresponding common test pad, and the common test pad is used To test the first electrodes of the corresponding one of the light modulation panels and the second electrodes corresponding to the other of the light modulation panels. The mother board of the optical modulation panel of claim 1, wherein the first electrode and the second electrode of each of the optical modulation panels respectively comprise a strip electrode, and the first electrode and the second electrode The lines are alternately arranged. The mother board of the optical modulation panel of claim 1, wherein the first electrode and the second electrode respectively comprise a transparent electrode, and the first test line and the second test line respectively comprise a metal wire. A light modulation panel comprising: a plurality of first electrodes disposed on the substrate; a plurality of second electrodes disposed on the substrate and electrically separated from the first electrodes; a plurality of first conductive patterns disposed on the substrate Each of the first conductive patterns is electrically connected to one end of the corresponding first electrode, and the first conductive patterns are electrically separated from each other; and a plurality of second conductive patterns are disposed on the substrate, wherein each of the first conductive patterns is disposed on the substrate The second conductive patterns respectively correspond to one end of the second electrode and are electrically separated. The optical modulation panel of claim 7, wherein each of the first electrodes and each of the second electrodes respectively comprise a strip electrode, and the first electrodes and the second electrode lines are alternately arranged with each other. The optical modulation panel of claim 7, wherein the first electrode and the second electrode respectively comprise a transparent electrode, and the first conductive pattern and the second conductive pattern respectively comprise a metal conductive pattern. The optical modulation panel of claim 7, further comprising a plurality of third conductive patterns and a plurality of fourth conductive patterns, wherein each of the third conductive patterns is electrically connected to the other end of the corresponding second electrode, And each of the fourth conductive patterns respectively corresponds to the other end of the first electrode and is electrically separated. The optical modulation panel of claim 10, wherein the third conductive pattern and the fourth The conductive patterns each include a metal conductive pattern. The optical modulation panel of claim 7, wherein the first conductive patterns and the second conductive patterns form an alternately arranged wrap pattern. A stereoscopic display device comprising: the light modulation panel of claim 7; and a display panel located below the light modulation panel. The stereoscopic display device of claim 13, wherein the display panel is a liquid crystal display panel or an organic light emitting diode display panel.