CN102736336A - Mother board of light modulation panel, light modulation panel and stereoscopic display device - Google Patents

Abstract

The invention discloses a motherboard of a light modulation panel, a light modulation panel and a three-dimensional display device. The motherboard of the light modulation panel includes a substrate, a plurality of light modulation panels, a plurality of first test lines and a plurality of second test lines. The light modulation panels are disposed on the substrate and arranged in an array. Each light modulation panel includes a plurality of first electrodes and a plurality of second electrodes. The first test lines are disposed on the substrate, wherein each first test line is electrically connected to the first electrode or the second electrode of the light modulation panel in the first row and the last row of the array respectively. The second test lines are disposed on the substrate, wherein each second test line is disposed between two adjacent light modulation panels in the same column of the array, and each second test line is connected to one of the two adjacent light modulation panels. The first electrode of one is electrically connected to the second electrode of the other.

Description

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

technical field

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

Background technique

Light modulating (light modulating) panels have been widely used in display devices due to their ability to adjust light. For example, the liquid crystal display panel has the function of adjusting the polarization state of light, that is, a light modulating panel. Generally speaking, the manufacturing method of the light-modulating panel is to manufacture a plurality of light-modulating panels on a motherboard, and then cut the motherboard into a plurality of light-modulating panels. Since each light modulating panel must be tested before cutting to ensure that the electrode pattern on the light modulating panel has no short circuit or open circuit defects, the electrode patterns of each light modulating panel must be pre-formed on the motherboard. Electrically connect the test leads for testing. However, since a certain space must be reserved between the test lines to ensure effective exposure, the utilization rate of the motherboard cannot be improved, and thus the cost of the light modulating panel cannot be reduced.

Contents of the invention

One of the objectives of the present invention is to provide a motherboard of a light modulating panel, a light modulating panel and a three-dimensional display device, so as to reduce costs.

To achieve the above object, a preferred embodiment of the present invention provides a motherboard of an optical modulation panel, which includes a substrate, a plurality of optical modulation panels, a plurality of first test lines and a plurality of second test lines. The light modulating panels are disposed on the substrate and arranged in an array, and each light modulating panel includes a plurality of first electrodes and a plurality of second electrodes. The first test lines are arranged on the substrate, and each first test line is respectively electrically connected to the first electrode or the second electrode of the light modulation panel in the first row and the last row of the array. The second test lines are arranged on the substrate, wherein each second test line is arranged between two adjacent light modulation panels in the same column of the array, and each second test line is connected to one of the two adjacent light modulation panels. The first electrode of one is electrically connected to the second electrode of the other.

Another preferred embodiment of the present invention provides a light modulating panel, which includes 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 patterns are disposed on the substrate, and each first conductive pattern is electrically connected to one end of the corresponding first electrode. The second conductive patterns are disposed on the substrate, wherein each second conductive pattern corresponds to one end of the second electrode and is electrically separated.

Yet another preferred embodiment of the present invention provides a stereoscopic display device, comprising the above-mentioned light-modulating panel, and a display panel located below the light-modulating panel.

Description of drawings

FIG. 1 is a schematic diagram of a motherboard of an optical modulation panel according to a preferred embodiment of the present invention;

2 is a schematic diagram of a motherboard of an optical 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 schematic top view of a 2D/3D switch panel according to a preferred embodiment of the present invention;

Fig. 5 is a schematic cross-sectional view of 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.

Description of main component symbols

Detailed ways

In order to enable those who are familiar with the technical field of the present invention to further understand the present invention, the preferred embodiments of the present invention are listed below, together with the accompanying drawings, to describe in detail the composition of the present invention and the desired effects .

Please refer to Figure 1. FIG. 1 shows a schematic diagram of a motherboard of a light modulating panel according to a preferred embodiment of the present invention. As shown in FIG. 1 , the motherboard 1 of the light modulating panel of this embodiment includes a substrate 10 , a plurality of light modulating 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 not limited thereto. The light modulation panels 12 are disposed on the substrate 10 and arranged in an array, and each light modulation panel 12 includes a plurality of first electrodes 12A and a plurality of second electrodes 12B. The first test lines 21 are disposed on the substrate 10 , wherein each first test line 21 is respectively electrically connected to the first electrodes 12A or the second electrodes 12B of the light modulating panel 12 in the first row and the last row of the array. The second test lines 22 are arranged on the substrate 10, wherein each second test line 22 is arranged between two adjacent light modulating panels 12 in the same column of the array, and each second test line 22 is connected to two adjacent light modulation panels 12. The first electrode 12A of one of the modulating panels 12 is electrically connected to the second electrode 12B of the other one.

In this embodiment, the motherboard 1 of the light modulating 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 first test line 21 corresponds to a 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 22 is connected with the The corresponding second test pad 32 is electrically connected to 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, and the third test pad 33 Used to test the second electrode 12B of another corresponding light modulating panel 12 through the second test line 22 . The first electrodes 12A and the second electrodes 12B of each light modulating panel 12 respectively include strip electrodes, and the first electrodes 12A and the second electrodes 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 this embodiment, the motherboard 1 of the light modulation panel includes two first test lines 21, one of the first test lines 21 is connected to the leftmost light modulation panel 12 of the array. The first electrode 12A is electrically connected, and the other first test line 21 is electrically connected to the second electrode 12B of the light modulation panel 12 located at the far right of the array, but not limited thereto. For example, one of the first test lines 21 may also be electrically connected to the second electrode 12B of the light modulating panel 12 located on the leftmost side of the array, while the other first test line 21 is connected to the light modulating panel 12 located on the far right side of the array. The first electrodes 12A of the variable panel 12 are electrically connected. In addition, each second test line 22 is respectively located between two adjacent light modulating panels 12, and is simultaneously electrically connected to the first electrode 12A of the light modulating panel 12 on one side thereof, and is connected to the first electrode 12A on the other side of the light modulating panel 12. The second electrode 12B of the light modulating panel 12 on the side is electrically connected. That is to say, two adjacent light-modulating panels 12 share a second test line 22, one of the light-modulating panels 12 can test the first electrode 12A through the second test line 22, and the other light-modulating panel 12 can The second electrode 12B is tested through the second test line 22 .

All the light modulating panels 12 included in the motherboard 1 of the light modulating panel need to be electrically tested to confirm whether the first electrodes 12A and the second electrodes 12B are normal without short circuit, open circuit or other defects. Once it is confirmed that the electrical properties are normal, the subsequent cutting process will be carried out to cut the motherboard 1 of the optical modulation panel into a plurality of optical modulation panels 12, and if the electrical properties are confirmed to be abnormal, repairing can be performed before the cutting process or The abnormal light modulation panel 12 is scrapped after the cutting process. In this embodiment, since two adjacent optical modulation panels 12 share one second test line 22, the layout space required for the test lines can be greatly reduced, and the use of the motherboard 1 of the optical modulation panel can be effectively increased. rate, to achieve the effect of economical cutting. In addition, in this embodiment, each second test line 22 is arranged along a row direction C, and has a winding pattern in a column direction R. "shaped" flexure, which mainly extends along the row direction C, but it will be folded back and forth in the column direction R and is connected with the first electrode 12A of the light modulating panel 12 on one side and the light modulating panel 12 on the other side. The second electrode 12B of the panel 12 is electrically connected. During the cutting process, the mother board 1 of the light modulation panel will be cut along the cutting line to form a plurality of separated light modulation panels 12, and the winding pattern of the second test line 22 can make the cutting process , even if the cutting line deviates, the second test line 22 can still be effectively cut off. Similarly, the first test line 21 may also have a winding pattern to improve the tolerance of the cutting process, but it is not limited thereto. For example, the first test line 21 may not have a winding pattern.

Please refer to Figure 2. FIG. 2 is a schematic diagram of a motherboard of a light modulating panel according to another preferred embodiment of the present invention. As shown in FIG. 2 , different from the previous embodiments, in this embodiment, the motherboard 1' of the light modulating panel includes a plurality of first test pads 31 and a plurality of common test pads 34, wherein each first test line 21 It is electrically connected to a 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; each 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 not directly connected to other test pads, and the common test pad 34 is used for A corresponding first electrode 12A of the light modulating panel 12 and another corresponding second electrode 12B of the light modulating panel 12 are tested. Since part of the adjacent light modulating panels 12 can share the common test pad 34, the number of test pads on the substrate 10 can be reduced to further increase the utilization rate of the motherboard 1' of the light modulating panel.

Please refer to FIG. 3 , and refer to FIG. 1 and FIG. 2 together. FIG. 3 is a schematic diagram of a light modulating panel according to a preferred embodiment of the present invention. The light modulating panel of this embodiment is formed after cutting the mother board of the light modulating panel shown in FIG. 1 or FIG. 2 . As shown in FIG. 3 , the light modulating panel 12 of this embodiment includes a substrate 10, a plurality of first electrodes 12A disposed on the substrate 10, and a plurality of second electrodes 12B disposed on the substrate 10 and electrically connected to the first electrodes 12A. sex separation, a plurality of first conductive patterns 51 are disposed on the substrate 10 , 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 arranged alternately with each other. The first conductive pattern 51 and the second conductive pattern 52 are part of the pattern left after the first test line or the second test line of the mother board of the optical modulation panel after the cutting process, so the first conductive pattern 51 and the second The conductive pattern 52 can be a metal conductive pattern. Each first conductive pattern 51 is electrically connected to one end of the corresponding first electrode 12A, and each second conductive pattern 52 is respectively corresponding to and electrically separated from one end of the second electrode 12B. That is to say, for the light modulating panel 12, the first conductive pattern 51 can be a first test pattern originally located on one side of the light modulating panel 12 and electrically connected to the first electrode 12A of the light modulating panel 12. line or the second test line is part of the pattern left after the cutting process, and the second conductive pattern 52 is originally located on one side of the light modulating panel 12 but not connected to the first electrode 12A of the light modulating panel 12 Or the first test line or the second test line electrically connected to the second electrode 12B is a part of the pattern left after the cutting process. In addition, the first conductive pattern 51 and the second conductive pattern 52 are located on the same side of the substrate 10 and form an alternately arranged winding pattern, and are electrically separated from each other. In addition, the light modulating panel 12 may further include a plurality of third conductive patterns 53 and a plurality of fourth conductive patterns 54, wherein each third conductive pattern 53 is electrically connected to the other end of the corresponding second electrode 12B, and each The fourth conductive patterns 54 respectively correspond to the other ends of the first electrodes 12A and are electrically separated. That is to say, for the light modulating panel 12, the third conductive pattern 53 can be the first conductive pattern originally located on the other side of the light modulating panel 12 and electrically connected to the second electrode 12B of the light modulating panel 12. The test line or the second test line is a part of the pattern left after the cutting process, and the fourth conductive pattern 54 is originally located on the other side of the light modulating panel 12 but is not connected to the first side of the light modulating panel 12. The first test line or the second test line electrically connected to the electrode 12A or the second electrode 12B is a part of the pattern left 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 winding pattern, and are electrically separated from each other.

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

Please refer to FIG. 6 , and refer to FIG. 4 and FIG. 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 this 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 screen or The switching of the 3D display screen may include the light modulation panels 12, 12' and the liquid crystal layer 42 shown in FIG. 4 and FIG. Stereoscopic picture. The display panel 60 is disposed under the 2D/3D switch panel 40 for providing display images. The display panel 60 can be various display panels, such as a liquid crystal display panel or an organic light emitting diode display panel, but not limited thereto. The liquid crystal lens 70 is disposed above the 2D/3D switch panel 40 .

In summary, two adjacent optical modulation panels on the motherboard of the optical modulation panel of the present invention share one test line, so the layout space required for the test line can be reduced, and the effect of economical cutting can be effectively reduced. cost. In addition, the light modulating panel of the present invention can be applied to various display devices, such as a 2D/3D switching switch panel as a stereoscopic display device.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (15)

1. A motherboard of an optical modulation panel, comprising: Substrate; A plurality of light modulation panels arranged on the substrate and arranged in an array, each of the light modulation panels includes a plurality of first electrodes and a plurality of second electrodes; A plurality of first test lines are arranged on the substrate, wherein each of the first test lines is respectively connected to the plurality of first electrodes or the plurality of second electrodes of the light modulating panel in the first row and the last row of the array. Electrode electrical connections; and A plurality of second test lines are arranged on the substrate, wherein each of the second test lines is arranged between two adjacent light modulation panels in the same column of the array, and each of the second test lines is connected to the The multiple first electrodes of one of the two adjacent light modulating panels are electrically connected to the multiple second electrodes of the other one. 2. The motherboard of the light modulating panel as claimed in claim 1, wherein each of the second test lines is arranged along a row direction and has a zigzag pattern along a column direction. 3. The motherboard of the light modulating panel according to claim 1, further comprising a plurality of first test pads, wherein each of the first test lines is electrically connected to a corresponding first test pad, and the first test The pads are used for testing the corresponding first electrodes or the second electrodes of the light modulating panel. 4. The motherboard of the light modulating panel as claimed in claim 3, further comprising a plurality of second test pads and a plurality of third test pads, wherein each of the second test lines is simultaneously connected to a corresponding second test pad It is electrically connected with the third test pad, and the second test pad is used for testing a corresponding plurality of first electrodes of the light modulation panel through the second test line, and the third test pad is used for testing the plurality of first electrodes of the light modulation panel through the second test line. The second test line tests another corresponding plurality of second electrodes of the light modulating panel. 5. The motherboard of the light modulating panel as claimed in claim 3, further comprising a plurality of common test pads, wherein each of the second test lines is electrically connected to a corresponding common test pad, and the common test pad is used for A corresponding plurality of first electrodes of the light modulating panel and another corresponding plurality of second electrodes of the light modulating panel are tested. 6. The motherboard of the light modulating panel as claimed in claim 1, wherein the first electrode and the second electrode of each of the light modulating panels respectively comprise strip-shaped electrodes, and the plurality of first electrodes and the plurality of The second electrodes are arranged alternately with each other. 7 . The motherboard of the light modulating panel as claimed in 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. 8. A light modulation panel, comprising: Substrate; a plurality of first electrodes arranged on the substrate; a plurality of second electrodes disposed on the substrate and electrically separated from the plurality of first electrodes; a plurality of first conductive patterns disposed on the substrate, wherein each of the first conductive patterns is electrically connected to one end of the corresponding first electrode; and A plurality of second conductive patterns are disposed on the substrate, wherein each second conductive pattern corresponds to one end of the second electrode and is electrically separated. 9 . The light modulating panel as claimed in claim 8 , wherein each of the first electrodes and each of the second electrodes comprises strip electrodes, and the plurality of first electrodes and the plurality of second electrodes are arranged alternately. 10. The light modulating panel as claimed in claim 8, wherein the first electrode and the second electrode respectively comprise transparent electrodes, and the first conductive pattern and the second conductive pattern respectively comprise a metal conductive pattern. 11. The light modulating panel as claimed in claim 8, 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 is respectively corresponding to and electrically separated from the other end of the first electrode. 12. The light modulating panel as claimed in claim 11, wherein the third conductive pattern and the fourth conductive pattern respectively comprise metal conductive patterns. 13. The light modulating panel as claimed in claim 8, wherein the plurality of first conductive patterns and the plurality of second conductive patterns form an alternately arranged winding pattern. 14. A stereoscopic display device, comprising: The light modulating panel of claim 8; and The display panel is located under the light modulation panel. 15. The stereoscopic display device as claimed in claim 14, wherein the display panel is a liquid crystal display panel or an OLED display panel.

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