JP2009086456A - Display device and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the occurrence of cracks on a display panel while reducing the number of division lines. <P>SOLUTION: A manufacturing method of a display device includes: a lamination process for forming a laminated substrate base material 34 by laminating a first substrate base material 31 to a second substrate base material on each of which terminal portions are formed in each panel formation area 40; and a division process for dividing the laminated substrate base material 34 in each panel formation area. The manufacturing method further includes: an aperture formation process for forming an aperture 36 in an area facing the terminal portion of the second substrate base material 32 before the lamination process; and an inspection process for inspecting lighting by supplying an inspection signal to each terminal portion exposed through the aperture 36 on the laminated substrate base material 34 before the division process. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display panel and a manufacturing method thereof.

  As a display panel, for example, a liquid crystal display panel is configured by bonding two glass substrates through a sealing material and enclosing liquid crystal in the bonded interior. Circuit elements such as TFTs are formed on a TFT (Thin Film Transistor) substrate which is one glass substrate, and a color filter pattern and the like are formed on a CF substrate which is the other glass substrate.

  In the manufacture of a liquid crystal display panel, a multi-chamfering method is generally known (see, for example, Patent Document 1). That is, first, a circuit pattern for a plurality of panels is formed on one mother glass substrate (hereinafter referred to as a substrate base material), and another substrate base material on which a color filter pattern for a plurality of panels is formed, A laminated mother glass substrate (hereinafter referred to as a bonded substrate base material) on which a plurality of liquid crystal display panels are formed is manufactured by superposing via a sealing material formed for each individual panel.

  Then, after forming into each liquid crystal display panel through the cell cutting process which divides | segments into each liquid crystal display panel from a bonding substrate base material, it test | inspects whether the display of each liquid crystal display panel operates normally. Perform lighting inspection. In this cell cutting step, since it is necessary to expose the terminal portion for controlling the liquid crystal display, a region facing the terminal portion is cut in a glass substrate including a plurality of counter substrates.

  Here, a general manufacturing method of a conventional liquid crystal display panel will be described with reference to FIGS. First, a sealing member forming process is performed. That is, as shown in FIG. 8, when the glass substrate 101 constituting the CF substrate and the glass substrate 102 constituting the TFT substrate are bonded, a plurality of seal members 103 are drawn or printed on one of these two substrates. To form. In the example of FIG. 8, the seal member 103 is formed on the surface of the glass substrate 101.

  The seal member 103 is formed in a substantially frame shape so as to define a region that becomes a space for confining liquid crystal (hereinafter referred to as a liquid crystal cell), but is not a completely closed ring but an enlarged plan view. As shown in FIG. 1, one portion is cut off as the inlet 116. Seal members 103 are provided at predetermined intervals for each liquid crystal display panel. For example, a thermosetting resin or the like is generally applied to the seal member 103.

  Next, a substrate bonding process is performed. That is, the glass substrates 101 and 102 are bonded through the seal member 103. The seal member 103 is cured by heating, for example.

  In the subsequent dividing step, for example, the glass substrates 101 and 102 are divided into individual regions including one liquid crystal cell or in a strip shape in which a plurality of liquid crystal cells are arranged in a line.

  Subsequently, a liquid crystal filling process is performed by a so-called dip injection method. In this step, the bonded substrate board 114 is housed in a vacuum device (not shown), and both the inside and the outside of the liquid crystal cell 115 are brought into a vacuum state. In this state, as shown in FIG. 10, the inlet 116 of the seal member 103 is immersed in the liquid crystal material 104 stored in the container, and the inside of the vacuum apparatus is gradually returned to atmospheric pressure. Then, the liquid crystal material 104 enters the liquid crystal cell 115 due to the pressure difference between the inside and the outside of the liquid crystal cell 115 and the capillary phenomenon.

  Thus, after the liquid crystal cell 115 is filled with the liquid crystal material 104, a sealing process is performed. That is, a sealing resin that is, for example, an ultraviolet curable resin is applied to the injection port 116. Subsequently, the sealing resin is cured by irradiating ultraviolet rays, and a bonded substrate 114 in which the liquid crystal material 104 is sealed inside the liquid crystal cell 115 is obtained.

  However, in such a conventional method, the loss of the liquid crystal material due to the liquid crystal material inevitably remaining in the container in which the liquid crystal material is stored, the long liquid crystal injection time, and the sealing and cleaning steps of the injection port are performed. There are many problems such as costing. Therefore, in recent years, a method called liquid crystal dropping injection has been adopted for dip injection.

  As shown in FIG. 11, in a general liquid crystal dropping injection method, in the substrate bonding step, the liquid crystal 104 is dropped onto one of the glass substrates 101 and 102 on which a plurality of closed rectangular frame-shaped sealing members 103 are formed. . Subsequently, the glass substrates 101 and 102 are bonded to each other, so that the liquid crystal 104 reaches the cell gap. According to this method, the liquid crystal loss can be reduced, the liquid crystal filling time can be shortened, and the sealing of the inlet, the cleaning process, and the like can be omitted.

  By the way, in the lighting inspection, a probe connected to the inspection device is brought into contact with the exposed terminal portion to transmit and receive signals, thereby confirming normal operation of the liquid crystal display. For this reason, in the lighting inspection, the manufactured liquid crystal display panel is attached to the inspection device for inspection.

  However, in recent years, the demand for liquid crystal display panels has increased, and the substrate base material has become larger in accordance with the improvement in production volume. Accordingly, the number of liquid crystal display panels formed on the bonded substrate matrix is increasing. Therefore, in the conventional method in which the lighting inspection is performed after the individual or strip-shaped liquid crystal display panel is cut out from the bonded substrate base material, the number of liquid crystal display panels cut out at a time is increased. The line configuration becomes complicated. As a result, handling up to the lighting inspection becomes complicated, and the device cost to reach the inspection device and the cost required for manpower increase, making it difficult to reduce the manufacturing cost of the liquid crystal display panel.

  Therefore, as described in Patent Document 2, it is known to perform a lighting inspection in a state of a bonded substrate base material. That is, after the substrate base materials are bonded to each other to form a bonded substrate base material, one substrate base material is partially cut and removed to expose a terminal portion necessary for lighting inspection. Thereafter, a plurality of terminal portions are brought into contact with the probe at once, and a lighting inspection is performed in a state of a bonded substrate base material.

  FIG. 12 is an enlarged plan view showing a part of the bonded substrate matrix 110. FIG. 13 is a perspective view showing a liquid crystal display panel 100 formed by dividing a bonded substrate base material.

  As shown by a one-dot chain line in FIG. 12, scribe lines 121 and 122 that are dividing lines for dividing each liquid crystal display panel 100 are formed in a lattice pattern on the bonded substrate base material 110. The scribe line 121 extending in the row direction is formed along the outer shape of the liquid crystal display panel 100. On the other hand, the scribe line 122 extending in the column direction is formed so as to pass along the outer shape of the liquid crystal display panel 100 or between the terminal portion 123 and the display region 124. As a result, the terminal portion 123 is exposed. Then, by dividing the bonded substrate base material 110 along these scribe lines 121 and 122, a liquid crystal display panel 100 as shown in FIG. 13 is obtained.

However, for example, when the glass substrate in the region sandwiched between the two scribe lines 122 facing the terminal portion 123 is removed, the liquid crystal display panel 100 adjacent to the region is likely to be cracked or cracked. There's a problem. Therefore, it is known that the dummy scribe line 125 is formed so as to pass between the adjacent liquid crystal display panels 100 via the terminal portion 123. Thus, the occurrence of cracks is suppressed in the adjacent liquid crystal display panel 100.
JP 2004-4636 A JP 2004-118135 A

  However, when the dummy scribe lines 125 are formed as in the conventional case, the number of scribe lines as a whole increases, and thus the number of man-hours is unavoidably increased. In addition, it is preferable that the number of scribe lines is small, since cracks are particularly likely to occur at the intersections where the scribe lines intersect. In recent years, there is a tendency to narrow the frame area, which is a non-display area, and further thinning of the panel, and high precision is also required for forming the scribe line. That is, it is difficult to form a large number of scribe lines with high accuracy.

  The present invention has been made in view of such various points, and an object thereof is to suppress the occurrence of cracks in a display panel while reducing the number of dividing lines.

  In order to achieve the above object, according to the present invention, before the second substrate base material is bonded to the first substrate base material, an opening is formed in advance in a region facing the terminal portion of the second substrate base material. I did it.

  Specifically, the method for manufacturing a display device according to the present invention includes a first substrate base material having a plurality of panel forming regions constituting a display panel and having a terminal portion formed for each panel forming region, and a second substrate. A method for manufacturing a display panel, comprising: a bonding step of bonding a base material to form a bonded substrate base material; and a dividing step of dividing the bonded substrate base material into each panel forming region, Before the bonding step, in the bonding substrate base material, before the cutting step, an opening forming step for forming an opening in advance in a region facing the terminal portion in the second substrate base material An inspection step of supplying a test signal to each terminal exposed through the opening to perform a lighting test.

  The width of the opening is preferably narrower than the width of the edge region where the terminal portion is formed in the panel formation region.

  In the dividing step, the bonded substrate matrix may be divided such that at least one dividing line passes through the opening.

  A liquid crystal dropping step that is performed before the bonding step and that drops and supplies liquid crystal to the first substrate base material or the second substrate base material for each panel forming region may be provided.

  In addition, the display device according to the present invention includes a first substrate having a terminal portion formed in an edge region, a second substrate disposed to face the first substrate, the first substrate, and the second substrate. A display medium layer provided between the first substrate, the terminal portion of the first substrate is exposed without overlapping the second substrate, and the edge region of the first substrate is At least one of both end portions in the length direction of the end side overlaps the second substrate.

  In the end region, it is preferable that both end portions in the length direction of the end side overlap the second substrate.

  It is preferable that a notch is formed in the second substrate, and the terminal portion of the first substrate is exposed at the notch.

  The display medium layer may be a liquid crystal layer.

-Action-
Next, the operation of the present invention will be described.

  When manufacturing the display panel, first, an opening forming step is performed before the bonding step, and the opening is formed in advance in a region facing the terminal portion in the second substrate base material. Thereafter, in the bonding step, the first substrate base material in which the terminal portions are formed in each panel formation region and the second substrate base material are bonded together to form a bonded substrate base material. Next, an inspection process is performed before the dividing process, and an inspection signal is supplied to each terminal portion exposed through the opening in the bonded substrate base material to perform a lighting inspection. Thereafter, in the dividing step, the bonded substrate matrix is divided for each panel formation region. Thus, a plurality of display panels are manufactured from the bonded substrate base material.

  Therefore, according to the present invention, since the opening is formed in the second substrate base material in advance before being bonded to the first substrate base material, the terminal portion is exposed in the state of the bonded substrate base material. There is no need to form a dividing line. Furthermore, since the opening is formed, it is possible to easily divide by suppressing generation of cracks in the display panel in the dividing process. Therefore, it is not necessary to form a dummy scribe line for suppressing the occurrence of cracks as in the conventional case, and the number of dividing lines is reduced.

  If the width of the opening is narrower than the width of the edge region where the terminal portion is formed, at least one side edge of the edge region of the display panel is covered with the second substrate. The strength of the display panel can be increased by increasing the thickness of the display panel.

  According to the present invention, since the opening is formed in the second substrate base material in advance before bonding to the first substrate base material, the lighting inspection of each display panel is collectively performed in the state of the bonded substrate base material. This can be performed, and the formation of a dividing line for exposing the terminal portion can be omitted. Furthermore, since the opening is formed, the generation of cracks in the display panel can be suppressed in the dividing process, and the opening can be easily divided. Therefore, it is not necessary to form dummy scribe lines for suppressing the occurrence of cracks, and the number of dividing lines can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment.

Embodiment 1 of the Invention
1 to 5 show Embodiment 1 of the present invention.

  First, the configuration of the liquid crystal display panel 1 as a display panel will be described with reference to FIGS. FIG. 4 is a perspective view schematically showing the appearance of the liquid crystal display panel 1 according to the first embodiment. 5 is a cross-sectional view taken along line VV in FIG.

  As shown in FIGS. 4 and 5, the liquid crystal display panel 1 has a TFT substrate 2 that is a first substrate on which a plurality of TFTs (thin-film transistors) that are switching elements are formed, and a TFT substrate 2 that faces the TFT substrate 2. For example, a CF substrate 3 as a second substrate on which a color filter (not shown) or the like is formed, and a liquid crystal layer as a display medium layer provided between the CF substrate 3 and the TFT substrate 2 4 is provided.

  The TFT substrate 2 includes a rectangular glass substrate 11 and a polarizing plate 13 provided on the opposite side of the glass substrate 11 from the liquid crystal layer 4. On the other hand, on the liquid crystal layer 4 side of the glass substrate 11, the TFT (not shown), pixel electrodes and wiring connected thereto, and the like are formed.

  As shown in FIG. 4, the CF substrate 3 includes a substantially rectangular glass substrate 12 in which a notch 25 is formed on one side, and a polarizing plate 14 provided on the opposite side of the glass substrate 12 from the liquid crystal layer 4. Have. On the liquid crystal layer 4 side of the glass substrate 12, the above-described color filter, common electrode, and the like (not shown) are formed.

  The liquid crystal layer 4 is sealed between the TFT substrate 2 and the CF substrate 3 by a seal member 15. The seal member 15 is formed in a closed substantially rectangular ring shape when viewed from the normal direction of the surface of the TFT substrate 2 or the CF substrate 3. In other words, the liquid crystal layer 4 is formed by filling a liquid crystal material into the liquid crystal cell partitioned by the TFT substrate 2 and the CF substrate 3 and the sealing member 15.

  Then, as shown in FIG. 5, a display region A in which a plurality of pixels (not shown) is arranged is formed in the region where the liquid crystal layer 4 is provided in the liquid crystal display panel 1, and the outside of the seal member 15. Is formed with a frame region B which is a non-display region. Further, a plurality of lead wires (not shown) are drawn from the display region A to the edge region 19 on one side of the TFT substrate 2 in the frame region B, and a terminal is provided at the tip of the plurality of lead wires. Each is formed. That is, a terminal portion 26 composed of a plurality of the terminals is formed in the edge region 19 of the TFT substrate 2. For example, an FPC 18 or an IC driver is connected to the terminal portion 26.

  As shown in FIGS. 4 and 5, the terminal portion 26 is exposed at the cutout portion 25 formed in the CF substrate 3. That is, the terminal portion 26 is exposed at the cutout portion 25 without overlapping the CF substrate 3, and the edge region 19 of the TFT substrate 2 has at least one of both end portions in the length direction of the edge region 19. , Overlaps the CF substrate 3. In the first embodiment, both end portions in the length direction of the end side in the end side region 19 overlap the CF substrate 3.

  Thus, the liquid crystal display panel 1 is supplied with a control signal from the FPC 18 or the like to each TFT, and a predetermined voltage is applied to the liquid crystal layer 4 for each pixel, so that a desired display is performed. Yes.

  Next, the configuration of the bonded substrate base material 34 will be described with reference to FIGS.

  FIG. 1 is a plan view schematically showing the appearance of the bonded substrate base material 34. FIG. 2 is an enlarged plan view showing a part of the bonded substrate base material. FIG. 3 is a plan view showing a part of the laminated substrate base material together with the dividing line of the first embodiment.

  The liquid crystal display panel 1 described above is manufactured by dividing the bonded substrate base material 34 into a plurality of pieces. That is, the bonded substrate matrix 34 is an aggregate in which a plurality of bonded substrates that will later become the liquid crystal display panel 1 are arranged in a matrix.

  As shown in FIG. 1, the bonded substrate base material 34 includes a first substrate base material 31, a second substrate base material 32 arranged to face the first substrate base material 31, and a first substrate base material 31. And the plurality of liquid crystal layers 4 arranged in a matrix between the second substrate base material 32 and the first substrate base material 31 and the second substrate base material 32 so as to surround each liquid crystal layer 4. And a plurality of formed sealing members (not shown).

  The first substrate base material 31 is formed as an aggregate of the TFT substrate 2, for example. The first substrate base material 31 has a plurality of panel forming regions 40 that constitute the liquid crystal display panel 1, and a terminal portion 26 is formed for each panel forming region 40.

  On the other hand, the second substrate base material 32 is formed as an aggregate of the CF substrate 3, for example. As shown in FIG. 3, a black matrix 35 that is a light shielding film is formed on the second substrate base material 32 so as to surround the display area A.

  Further, as shown in FIGS. 2 and 3, the second substrate base material 32 has an opening 36 in a region facing the terminal portion 26. The opening 36 is formed in a substantially rectangular shape, and its four corners are each formed in a round shape. In the panel formation region 40 in which the opening 36 is provided, a predetermined interval is provided between the opening 36 and the black matrix 35.

  3, the width X of the opening 36 in the edge direction of the edge region 19 is the width in the edge direction of the edge region 19 in which the terminal portion 26 is formed in the panel formation region 40. It is narrower than Y. That is, the end side region 19 is exposed at the center in the end side direction through the opening 36.

-Manufacturing method-
Next, a method for manufacturing the liquid crystal display panel 1 will be described.

  First, the first substrate base material 31 and the second substrate base material 32 are formed. That is, the first substrate base material 31 is formed on the large mother glass substrate by forming the terminal portion 26, the TFT, the pixel electrode, the signal line, the scanning line, and the like for each of the plurality of panel forming regions 40. On the other hand, the second substrate base material 32 is formed by forming the opening 36, the color filter, the common electrode, the black matrix 35, and the like in the panel formation region 40 on another large-sized mother glass substrate. That is, an opening forming step for forming an opening in a region facing the terminal portion 26 in the second substrate base material 32 is performed before a bonding step described later.

  As shown in FIGS. 2 and 3, the opening 36 is set to be about several mm shorter than the short side dimension in the rectangular panel forming region 40, and does not intersect the dividing line 41 formed along the long side. Like that. The long side of the opening 36 is formed on the outer side (terminal side 26 side) of the black matrix 35 and the seal member formed on the outer periphery of the display area A. On the other hand, the short side of the opening 36 is disposed at a position about several mm away from the dividing line 41.

  Next, a bonding step is performed to bond the first substrate base material 31 and the second substrate base material 32 to each other to form a bonded substrate base material. At this time, the annular seal member 15 is drawn or printed on the first substrate base material 31 or the second substrate base material 32 for each panel forming region 40, respectively. Further, liquid crystal is dropped on the inner region of the seal member 15 in one of the substrate base materials 31 and 32 on which the seal member 15 is formed, or the region corresponding to the inner region of the other substrates 31 and 32. A liquid crystal dropping process is performed.

  Therefore, by performing the liquid crystal dropping step and the bonding step, the bonded substrate base material in which the liquid crystal layer 4 is sealed by the sealing member 15 and the opening 36 is formed for each of the plurality of panel forming regions 40. 34 will be formed.

  Then, an inspection process is performed before the below-mentioned parting process. In the inspection process, a lighting inspection is performed by supplying a predetermined inspection signal to each terminal portion 26 exposed through the opening 36 in the bonded substrate base material 34 using an inspection probe or the like.

  The inspection signal is preferably supplied to all the terminal portions 26 in the bonded substrate matrix 34 from the viewpoint of inspection efficiency. On the other hand, from the viewpoint of performing reliable and stable inspection even for a large number of liquid crystal cells of about 200 to 300, for example, it is preferable to supply them collectively for each column of the terminal portions 26 aligned in the row direction or the column direction.

  Thereafter, a dividing step is performed, and the bonded substrate base material 34 is divided for each panel forming region 40. That is, as shown in FIG. 3, a plurality of dividing lines 41 extending in the row direction and a plurality of dividing lines 42 extending in the column direction are formed by a cutter wheel or the like. For example, first, a plurality of dividing lines 42 are formed in the column direction. Next, the dividing line 41 is formed in a direction orthogonal to the dividing line 42 (that is, the row direction). At this time, the dividing line 41 is formed so that no cracks or chips are generated at the intersection of the dividing lines 41 and 42. The speed (breaking speed) is made slower than the forming speed of the dividing line 42 where no intersection is formed. For example, the forming speed of the dividing line 42 is set to 300 to 400 mm / second, while the forming speed of the dividing line 41 is set to 50 to 100 mm / second.

  Thus, each panel forming region 40 is divided by two dividing lines 41 adjacent in the row direction and two dividing lines 42 adjacent in the column direction. As a result, the plurality of bonded substrates are respectively formed in outer shape, and as a result, the liquid crystal display panel 1 is manufactured from each bonded substrate.

  In this dividing step, the bonded substrate matrix 34 is divided so that at least one dividing line 42 passes through the opening 36. In the present embodiment, the dividing line 42 extending in the column direction on the terminal portion 26 side of the panel forming region 40 passes through the opening 36. In other words, the opening 36 is formed so as to straddle the dividing line 42.

-Effect of Embodiment 1-
Therefore, according to the first embodiment, before the second substrate base material 32 is attached to the first substrate base material 31, the opening 36 is formed in the second substrate base material 32 in advance. In the state of the substrate base material 34, the lighting inspection of each liquid crystal display panel 1 (panel forming region 40) can be performed at the same time, and the formation of the dividing line for exposing the terminal portion 26 is omitted, thereby reducing the man-hours. Can be reduced. Furthermore, since the opening 36 is formed in advance, when the liquid crystal display panel 1 at a predetermined position is divided in the dividing step, the display area A is adjacent to the liquid crystal display panel 1 via the terminal portion 26. In the liquid crystal display panel 1, the occurrence of cracks can be suppressed. That is, the bonded substrate base material 34 can be easily and accurately divided.

  In addition, since it is not necessary to form a dummy scribe line for suppressing the occurrence of cracks as in the prior art, the number of dividing lines and the number of intersections between the dividing lines 41 and 42 can be reduced. Furthermore, as for the formation order of each dividing line formed in the row direction and the column direction, any one can be formed first, and by setting the number of dividing lines on the side to be formed later, the efficiency can be improved. Good processing can be performed.

  Furthermore, since the width of the opening 36 is formed to be narrower than the width of the edge region 19 where the terminal portion 26 is formed, both end portions in the edge direction of the edge region 19 of the liquid crystal display panel 1 are connected to the CF substrate 3. The thickness of the liquid crystal display panel 1 in the edge region 19 can be increased to increase its strength.

<< Embodiment 2 of the Invention >>
6 and 7 show Embodiment 2 of the present invention.

  FIG. 6 is a plan view showing a part of the bonded substrate base material together with the dividing line of the second embodiment. FIG. 7 is a perspective view schematically showing the appearance of the liquid crystal display panel 1 in the second embodiment. In the following embodiments, the same portions as those in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the first embodiment, the liquid crystal display panel 1 is formed so that a part of the shape of the opening 36 remains. In the second embodiment, the liquid crystal display panel 1 is formed so that the shape of the opening 36 does not remain. It is a thing.

  That is, in the liquid crystal display panel 1 of the second embodiment, as shown in FIG. 7, the entire edge region 19 where the terminal portion 26 is formed in the TFT substrate 2 is rectangular without overlapping the CF substrate 3. Exposed.

  When the liquid crystal display panel 1 is manufactured, the opening forming process, the bonding process, and the inspection process are performed as in the first embodiment. In the subsequent dividing step, as in the first embodiment, the dividing lines 41 and 42 are formed, and the CF substrate 3 around the opening 36 facing the edge region 19 is divided and removed as shown in FIG. A dividing line 43 is formed. The dividing line 43 can be disposed so as to pass between the terminal portion 26 and the black matrix 35.

  Therefore, also in the second embodiment, since the opening 36 is formed in the second substrate base material 32 in advance, the same effect as in the first embodiment can be obtained.

<< Other Embodiments >>
In each of the first embodiments, the liquid crystal display panel has been described as an example of the display panel. However, the present invention is not limited to this, and other display panels such as an organic EL display panel in which the display medium layer is a light emitting layer are used. Can be applied as well.

  As described above, the present invention is useful for a display panel and a manufacturing method thereof, and is particularly suitable for suppressing the occurrence of cracks in the display panel while reducing the number of dividing lines.

FIG. 1 is a plan view schematically showing the appearance of a bonded substrate matrix. FIG. 2 is an enlarged plan view showing a part of the bonded substrate base material. FIG. 3 is a plan view showing a part of the laminated substrate base material together with the dividing line of the first embodiment. FIG. 4 is a perspective view schematically showing the appearance of the liquid crystal display panel 1 according to the first embodiment. 5 is a cross-sectional view taken along line VV in FIG. FIG. 6 is a plan view showing a part of the bonded substrate base material together with the dividing line of the second embodiment. FIG. 7 is a perspective view schematically showing the appearance of the liquid crystal display panel 1 in the second embodiment. FIG. 8 is a perspective view showing a conventional glass substrate base material bonded to each other. FIG. 9 is a plan view showing a conventional bonded substrate. FIG. 10 is an explanatory view showing a bonded substrate in a conventional dip injection process. FIG. 11 is a perspective view showing a glass substrate base material in the liquid crystal dropping step. FIG. 12 is an enlarged plan view showing a part of a conventional bonded substrate. FIG. 13 is a perspective view schematically showing a conventional liquid crystal display panel.

Explanation of symbols

1 Liquid crystal display panel 2 TFT substrate (first substrate)
3 CF substrate (second substrate)
4 Liquid crystal layer (display medium layer)
19 Edge region 25 Notch portion 26 Terminal portion 31 First substrate base material 32 Second substrate base material 34 Bonded substrate base material 35 Black matrix 36 Opening portion 40 Panel formation region 41, 42, 43 Dividing line

Claims (8)

A bonded substrate matrix is formed by laminating a first substrate matrix having a plurality of panel formation areas constituting a display panel and having a terminal portion formed in each panel formation area, and a second substrate matrix. Bonding process;
A method for manufacturing a display panel, comprising: a dividing step of dividing the bonded substrate base material into each panel forming region;
Before the bonding step, an opening forming step for forming an opening in advance in a region facing the terminal portion in the second substrate base material,
Before the dividing step, an inspection step of supplying an inspection signal to each terminal portion exposed through the opening in the bonded substrate base material and performing a lighting inspection is provided. Panel manufacturing method. In the manufacturing method of the display panel according to claim 1,
A method for manufacturing a display panel, wherein the width of the opening is narrower than the width of the edge region where the terminal portion is formed in the panel formation region. In the manufacturing method of the display panel according to claim 1,
In the dividing step, the bonded substrate base material is divided such that at least one dividing line passes through the opening. In the manufacturing method of the display panel according to claim 1,
A display panel comprising a liquid crystal dropping step which is performed before the bonding step and which drops and supplies liquid crystal to the first substrate base material or the second substrate base material for each panel forming region. Manufacturing method. A first substrate having a terminal portion formed in an edge region;
A second substrate disposed opposite the first substrate;
A display panel comprising a display medium layer provided between the first substrate and the second substrate,
The terminal portion of the first substrate is exposed without overlapping the second substrate,
In the end region of the first substrate, at least one of both end portions in the length direction of the end side overlaps the second substrate. The display panel according to claim 5,
The display panel according to claim 1, wherein both end portions in the length direction of the end side overlap the second substrate. The display panel according to claim 5,
The second substrate is formed with a notch,
The terminal portion of the first substrate is exposed at the cutout portion. The display panel according to claim 5,
The display panel, wherein the display medium layer is a liquid crystal layer.

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