JP2010002700A - Display, and method for producing the same - Google Patents

Display, and method for producing the same Download PDF

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Publication number
JP2010002700A
JP2010002700A JP2008161626A JP2008161626A JP2010002700A JP 2010002700 A JP2010002700 A JP 2010002700A JP 2008161626 A JP2008161626 A JP 2008161626A JP 2008161626 A JP2008161626 A JP 2008161626A JP 2010002700 A JP2010002700 A JP 2010002700A
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Japan
Prior art keywords
substrate
display device
side
main body
formed
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Pending
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JP2008161626A
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Japanese (ja)
Inventor
Mitsuaki Morimoto
Tetsuya Okamoto
Shinji Yamagishi
慎治 山岸
哲也 岡本
光昭 森本
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Sharp Corp
シャープ株式会社
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Priority to JP2008161626A priority Critical patent/JP2010002700A/en
Publication of JP2010002700A publication Critical patent/JP2010002700A/en
Application status is Pending legal-status Critical

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Abstract

The manufacturing cost is reduced by increasing the number of display devices obtained from a single substrate substrate.
A first substrate 11 is formed integrally with a rectangular main body portion 21 and the main body portion 21 as viewed from the normal direction of the surface thereof, and extends outward from one side of the main body portion 21. And an overhanging portion 22 provided with a terminal portion 19 composed of a plurality of terminals 18. The overhang portion 22 is formed only on a part of one side of the main body portion 21.
[Selection] Figure 1

Description

  The present invention relates to a thin display device such as a liquid crystal display device and a manufacturing method thereof.

  In recent years, for example, portable devices such as mobile phones and digital cameras have been widely used, and thin display devices such as liquid crystal display devices have been applied as display devices. In addition, for example, an organic EL display device has been developed. The liquid crystal display device has the advantages of low power consumption and light weight, while the organic EL display device has the advantage of excellent viewing angle characteristics.

  For example, as shown in FIG. 9 which is a plan view, the liquid crystal display device 100 includes a TFT substrate 101 on which a plurality of thin film transistors (hereinafter abbreviated as TFTs) are formed, The counter substrate 102 which opposes and the liquid crystal layer 103 provided between these two board | substrates 101 and 102 are provided.

  The liquid crystal layer 103 is sealed between the substrates 101 and 102 by a frame-shaped seal member 104. Thus, a desired image is formed by applying a voltage to the liquid crystal layer 103 for each pixel and adjusting the amount of light transmitted through the liquid crystal layer 103.

  In the portable device described above, the liquid crystal display device 100 is accommodated in a limited space inside the casing. In addition, in order to increase the amount of information that can be displayed, the display area 105 of the liquid crystal display device 100 is enlarged as much as possible, while a frame-like non-display area (hereinafter referred to as a frame area) 106 outside the display area 105. Narrowing is strongly desired.

  Here, as disclosed in Patent Document 1, for example, the frame region 106 of the TFT substrate 101 is formed with an overhanging region 107 that protrudes outside the counter substrate 102 when viewed from the normal direction of the substrate surface. ing. The overhang region 107 is formed so as to extend over the entire side of the TFT substrate 101, for example.

  A plurality of terminals 108 provided at ends of wiring (not shown) extending from the display area 105 of the TFT substrate 101 are formed in the overhang area 107. A portion where the plurality of terminals 108 are formed is referred to as a terminal portion 109.

  The terminal portion 109 is disposed at the center in the length direction of one side of the TFT substrate 101 in the overhang region 107. Thus, an IC driver (not shown) as a drive circuit is mounted on the terminal portion 109.

In the display device of Patent Document 1, in order to reduce the area of the frame region, the lead-out wiring led out from the display region to the terminal portion is arranged inside the seal member.
JP 2003-36040 A

  By the way, the display device is generally formed by dividing a large bonded substrate base material bonded to each other into a plurality of pieces. From the viewpoint of reducing the manufacturing cost, it is preferable that the number of display devices obtained from one bonded substrate base material is large.

  However, in the conventional display device described above, it is difficult to increase the number of display devices obtained from one bonded substrate base material without reducing the display area.

  The present invention has been made in view of such a point, and the object of the present invention is to increase the number of display devices obtained from one bonded substrate base material as much as possible, and It is to reduce the manufacturing cost.

  In order to achieve the above object, in the present invention, the overhanging portion is formed only on a part of one side of the main body portion.

  Specifically, a display device according to the present invention includes a first substrate, a second substrate disposed opposite to the first substrate, and a display medium layer provided between the first substrate and the second substrate. The first substrate is formed integrally with the rectangular main body portion and the main body portion when viewed from the normal direction of the surface of the first substrate, and the main body portion. And a protruding portion provided with a terminal portion including a plurality of terminals, and the protruding portion is formed only on a part of one side of the main body portion.

  It is desirable that the projecting portion is formed to be biased to either the left or right side of the central position on one side of the main body portion.

  An end of the projecting portion on the central position side may be formed so as to extend inclined with respect to one side of the main body portion.

  An end portion on the side of the center position in the projecting portion may be formed to extend perpendicular to one side of the main body portion.

  The end portion on the center position side of the overhang portion may be formed to be curved.

  The display medium layer may be a liquid crystal layer.

  The display device manufacturing method according to the present invention is a method for manufacturing a display device in which a display medium layer is provided between a first substrate and a second substrate facing each other, and a plurality of devices arranged in a matrix. A bonding step of bonding a first substrate base material including the first substrate and a second substrate base material including the plurality of second substrates arranged in a matrix to form a bonded substrate base material. And a dividing step of dividing the bonded substrate base material to form a plurality of bonded substrates composed of a pair of the first substrate and the second substrate, wherein the first substrate includes the first substrate When viewed from the normal direction of the surface of the substrate, a rectangular main body and a terminal formed of a plurality of terminals are formed integrally with the main body and projecting outward from one side of the main body. In the dividing step, the tension is The out portion is formed only on a part of one side of the body portion.

  In the dividing step, it is preferable that the protruding portion is formed so as to be biased toward the left or right side of the center position on one side of the main body portion.

  In the dividing step, the end portion on the center position side of the projecting portion may be formed so as to be inclined and extend with respect to one side of the main body portion.

  In the dividing step, the end portion on the center position side of the overhang portion may be formed so as to extend perpendicular to one side of the main body portion.

  In the dividing step, the end portion on the center position side of the overhang portion may be formed to be curved.

  The display medium layer may be a liquid crystal layer.

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

  When a display device is manufactured, a large bonded substrate base material in which a plurality of display devices are arranged in a matrix is divided into a lattice. Thus, a plurality of display devices are manufactured from one bonded substrate base material.

  In the display device according to the present invention, since the protruding portion is formed only on a part of one side of the rectangular main body portion, a pair of main body portions arranged adjacent to each other in a large-sized bonded substrate base material It becomes possible to arrange each overhang part along with the length direction of one side of the above-mentioned body part between them.

  Accordingly, since the total area of the overhang portion in the large-sized bonded substrate base material is reduced, the number of display devices obtained from one bonded substrate base material can be greatly increased, and the manufacturing cost is remarkable. Reduced to

  When the overhanging part is formed to be biased to either the left or right side of the center position on one side of the main body part, for example, the center position side end of the overhanging part is inclined with respect to one side of the main body part. It becomes possible to increase the mechanical strength.

  According to the present invention, since the overhang portion is formed only on a part of one side of the main body portion, the total area of the overhang portion in the large-sized bonded substrate base material is reduced, and one bonded substrate is obtained. The number of display devices obtained from the base material can be greatly increased. As a result, the manufacturing cost can be significantly 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 of the Invention >>
1 to 5 show an embodiment of the present invention.

  FIG. 1 is a plan view showing a main part of the liquid crystal display device of the present embodiment. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a plan view showing the appearance of the TFT substrate. FIG. 4 is a plan view showing a part of the bonded substrate matrix viewed from the second substrate matrix side. 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 matrix viewed from the first substrate matrix side.

  First, the configuration of the liquid crystal display device 1 as a display device will be described with reference to FIGS. The liquid crystal display device 1 includes a TFT substrate 11 as a first substrate, a CF substrate 12 as a second substrate disposed opposite to the TFT substrate 11, and a display provided between the CF substrate 12 and the TFT substrate 11. And a liquid crystal layer 13 which is a medium layer.

  The liquid crystal layer 13 is sealed between the TFT substrate 11 and the CF substrate 12 by a rectangular frame-shaped sealing member 15 made of, for example, a photocurable resin.

  As shown in FIG. 1, a rectangular display region 16 is formed inside the seal member 15, while a frame region 17 serving as a non-display region surrounds the display region 16 outside the display region 16. It is formed in a frame shape. In the display area 16, a plurality of pixels (not shown) are arranged in a matrix.

  The TFT substrate 11 is formed of a substantially rectangular glass substrate having a thickness of, for example, 0.1 to 0.7 mm, and a TFT (Thin-Film Transistor: not shown) serving as a switching element is formed on the surface on the liquid crystal layer 13 side. ) Is formed for each pixel. Although not shown, the TFT substrate 11 is provided with a pixel electrode for driving and controlling the liquid crystal layer 13 for each pixel, and a plurality of gate wirings and source wirings connected to each TFT. Has been.

  On the other hand, the CF substrate 12 is formed of a rectangular glass substrate having a thickness of, for example, 0.1 to 0.7 mm, and the surface on the liquid crystal layer 13 side is not illustrated. ), A common electrode made of ITO or the like, and a black matrix or the like as a light shielding film. Although not shown, polarizing plates are respectively attached to the surfaces of the TFT substrate 11 and the CF substrate 12 opposite to the liquid crystal layer 13.

  As shown in FIG. 3, the TFT substrate 11 is integrally formed with the rectangular main body 21 and the main body 21 as viewed from the normal direction of the surface of the TFT substrate 11 and one side of the main body 21. It is comprised by the overhang | projection part 22 formed by projecting outside from.

  The overhanging portion 22 is provided with a terminal portion 19 including a plurality of terminals 18 on the surface on the CF substrate 12 side. Each terminal 18 is formed at the end of the wiring drawn out from the display area 16. The terminal portion 19 is a mounting area for connecting, for example, an FPC or an IC driver (not shown).

  The overhang portion 22 is formed only on a part of one side of the main body portion 21. The overhang portion 22 is formed only on either the left or right side of the central position on one side of the main body portion 21 and is formed in a belt shape extending along one side of the main body portion 21 when viewed from the normal direction of the substrate surface. Has been.

  Furthermore, the end portion 23 on the center position side of the overhang portion 22 is formed in a tapered shape that is inclined with respect to one side of the main body portion 21 and extends linearly. And the base end part (part by the side of the main-body part 21) of the overhang | projection part 22 is longer than the outer front-end | tip part in the length direction (namely, left-right direction in FIG. 3) of the said one side.

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

  The above-described liquid crystal display device 1 is manufactured by dividing the bonded substrate base material 34 into a plurality of pieces. That is, as shown in FIGS. 4 and 6, the bonded substrate base material 34 is configured to be divided into a lattice shape so that a plurality of liquid crystal display devices 1 are formed. In other words, the bonded substrate matrix 34 is an aggregate in which a plurality of bonded substrates 10 that will later become the liquid crystal display device 1 are arranged in a matrix.

  As shown in FIG. 5, the bonded substrate base material 34 is a first substrate base material 31 made of a large mother glass and a second mother glass made of a large mother glass arranged to face the first substrate base material 31. A liquid crystal layer 13 that is a plurality of display medium layers arranged in a matrix between the substrate base material 32, the first substrate base material 31 and the second substrate base material 32, and the first substrate base material 31 and the second substrate. A sealing member 15 formed so as to surround the liquid crystal layer 13 is provided between the base materials 32. The liquid crystal layer 13 is formed by dropping liquid crystal as a display medium in a region where the seal member 15 is formed.

  The first substrate base material 31 is formed as an aggregate of a plurality of TFT substrates 11 arranged in a matrix. On the other hand, the second substrate base material 32 is formed as an aggregate of a plurality of CF substrates 12 arranged in a matrix. The second substrate base material 32 is formed thinner than the first substrate base material 31.

  That is, the first substrate base material 31 includes, for example, a protruding portion 22 between a pair of main body portions 21 that are vertically adjacent to each other in FIG. They are arranged side by side. Further, the overhanging portions 22 are arranged every other row between the plurality of main body portions 21 arranged in a matrix, and are arranged in a row in the row direction (left-right direction in FIG. 6).

  On the other hand, a plurality of CF substrates 12 are arranged on the second substrate base material 32 so as to face the main body portion 21 in the first substrate base material 31, respectively. Discarded substrate portions 26 are respectively disposed between the CF substrates 12. The discarded substrate portion 26 is a portion that is removed when the bonded substrate base material 34 is divided, and is disposed so as to face the overhanging portion 22. That is, the discarded substrate portions 26 are also arranged every other row between the plurality of main body portions 21 and are provided side by side in the row direction.

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

  First, electrodes, wirings, and the like are formed on a large mother glass to form a first substrate base material 31 and a second substrate base material 32.

  Next, a bonding step is performed to bond the first substrate base material 31 and the second substrate base material 32 to each other, thereby forming a bonded substrate base material 34.

  That is, a seal member 15 made of a photocurable resin is applied to the first substrate base material 31 or the second substrate base material 32 by a dispenser so as to surround the display region 16 for each region to be the liquid crystal display device 1. Form. Next, liquid crystal is dropped onto the display area 16 inside the seal member 15 using a liquid crystal dropping device (not shown). Subsequently, the first substrate base material 31 and the second substrate base material 32 are bonded to each other under vacuum.

  Next, the bonded first substrate base material 31 and second substrate base material 32 are taken out into the atmosphere. As a result, the dropped liquid crystal diffuses into the display area. Thereafter, the seal member 15 is cured using a UV light source.

  Next, a cutting step is performed to cut the bonded substrate base material 34 to form a plurality of bonded substrates 10 composed of a set of TFT substrates 11 and CF substrates 12.

  First, a laminated substrate base material 34 is placed on an adsorption stage of a substrate cutting apparatus (not shown) so that the second substrate base material 32 side faces upward, and a wheel cutter having a disk-shaped blade is used as shown in FIG. In addition, cracks (scribe grooves) are formed in the second substrate base material 32 along the lattice-shaped dividing lines 42.

  Next, the vacuum chucking of the substrate cutting apparatus is released, the bonded substrate matrix 34 is turned upside down, and the bonded substrate matrix 34 is placed on the adsorption stage so that the first substrate matrix 31 side faces upward. . And a crack is formed in the 1st board | substrate preform | base_material 31 along the substantially lattice-shaped parting line 41 with a wheel cutter, as shown in FIG. Thereafter, the vacuum cutting of the substrate cutting device is released, the bonded substrate base material 34 is removed from the suction stage, the external cracks are applied to the bonded substrate base material 34, and the cracks are advanced to form a plurality of cracks. Divide into bonded substrates 10.

  In this dividing step, the overhanging portion 22 is formed only on a part of one side of the main body portion 21. That is, as shown in FIG. 6, a part of the dividing lines 41 meander left and right in the figure, so that the two overhanging parts 22 are connected between a pair of main body parts 21 adjacent in the vertical direction in the figure. It forms so that it may rank with right and left in a figure. As a result, the overhang portion 22 is formed only on either the left or right side of the center position on one side of the main body portion 21. Further, the end portion 23 on the projecting portion 22 on the center position side is formed in a tapered shape extending obliquely with respect to one side of the main body portion 21.

  Thereafter, a polarizing plate pasting step, a lighting inspection step, an FPC connection step, a backlight attachment step, a final point inspection step, and the like are performed for each divided liquid crystal display device 1. The liquid crystal display device 1 is manufactured through the above steps.

-Effect of the embodiment-
Therefore, according to this embodiment, since the overhanging portion 22 is formed only on a part of one side of the rectangular main body portion 21, a set of main body portions arranged adjacent to each other in the large-sized bonded substrate base material 34. Each overhanging part 22 can be arranged along the length direction of one side of the main body part 21 between the two parts 21.

  As a result, the total area of the overhang portions 22 in the large-sized bonded substrate base material 34 can be halved, so that the number of liquid crystal display devices 1 obtained from a single bonded substrate base material 34 can be greatly increased. . As a result, the manufacturing cost of the liquid crystal display device 1 can be significantly reduced.

  Further, the overhanging portion 22 is formed so as to be biased to either the left or right side of the central position on one side of the main body portion 21, and the central position side end 23 of the overhanging portion 22 is tapered with respect to one side of the main body portion 21. Since it is made to incline in the shape, the mechanical strength can be raised.

<< Other Embodiments >>
The present invention may be configured as follows with respect to the above embodiment.

  For example, in the dividing step, the end portion 23 on the center position side of the overhang portion 22 may be formed so as to extend perpendicular to one side of the main body portion 21 as shown in FIG. Moreover, in the said division | segmentation process, you may form the edge part 23 of the center position side in the overhang | projection part 22 so that it may curve, as shown in FIG.

  The first substrate 11 is not limited to an active matrix TFT substrate, and may be a passive matrix (simple matrix) substrate.

  In the above embodiment, the liquid crystal display device has been described as an example. However, the present invention is not limited to this, and other display devices such as an EL display device in which the display medium layer is a light emitting layer are similarly used. Can be applied.

  In addition, the said embodiment is an essentially preferable illustration, Comprising: It does not intend limiting the range of this invention, its application thing, or its use.

  As described above, the present invention is useful for a thin display device such as a liquid crystal display device and a manufacturing method thereof.

FIG. 1 is a plan view showing a main part of the liquid crystal display device of the present embodiment. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a plan view showing the appearance of the TFT substrate. FIG. 4 is a plan view showing a part of the bonded substrate matrix viewed from the second substrate matrix side. 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 matrix viewed from the first substrate matrix side. FIG. 7 is a plan view showing a main part of a liquid crystal display device according to another embodiment. FIG. 8 is a plan view showing a main part of a liquid crystal display device according to another embodiment. FIG. 9 is a plan view showing a main part of a conventional liquid crystal display device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 10 Substrate 11 TFT substrate (1st substrate)
12 CF substrate (second substrate)
DESCRIPTION OF SYMBOLS 13 Liquid crystal layer 15 Sealing member 16 Display area 17 Frame area 18 Terminal 19 Terminal part 21 Main part 22 Overhang part 23 End part 31 1st board | substrate base material 32 2nd board | substrate base material 34 Bonded board | substrate base material

Claims (12)

  1. A first substrate;
    A second substrate disposed opposite the first substrate;
    A display device comprising a display medium layer provided between the first substrate and the second substrate,
    The first substrate is formed integrally with the rectangular main body portion and the main body portion as seen from the normal direction of the surface of the first substrate, and is formed to project outward from one side of the main body portion, It is composed of an overhang part provided with a terminal part composed of a plurality of terminals,
    The display device, wherein the projecting portion is formed only on a part of one side of the main body portion.
  2. The display device according to claim 1,
    The display device according to claim 1, wherein the projecting portion is formed to be biased to either the left or right side of the central position on one side of the main body portion.
  3. The display device according to claim 2,
    The display device, wherein an end portion of the projecting portion on the center position side is formed so as to be inclined and extend with respect to one side of the main body portion.
  4. The display device according to claim 2,
    An end of the projecting portion on the central position side is formed to extend perpendicularly to one side of the main body.
  5. The display device according to claim 2,
    The display device, wherein an end of the projecting portion on the side of the central position is formed to be curved.
  6. The display device according to claim 1,
    The display device, wherein the display medium layer is a liquid crystal layer.
  7. A method of manufacturing a display device in which a display medium layer is provided between a first substrate and a second substrate facing each other,
    A first substrate base material including a plurality of first substrates arranged in a matrix and a second substrate base material including a plurality of second substrates arranged in a matrix are bonded together to form a bonded substrate mother A laminating process to form a material;
    A dividing step of dividing the bonded substrate base material to form a plurality of bonded substrates composed of a set of the first substrate and the second substrate;
    The first substrate is formed integrally with the rectangular main body portion and the main body portion as seen from the normal direction of the surface of the first substrate, and is formed to project outward from one side of the main body portion, It is composed of an overhang part provided with a terminal part composed of a plurality of terminals,
    In the dividing step, the protruding portion is formed only on a part of one side of the main body portion.
  8. In the manufacturing method of the display device according to claim 7,
    In the dividing step, the projecting portion is formed so as to be biased toward either the left or right side of the central position on one side of the main body portion.
  9. In the manufacturing method of the display device according to claim 8,
    In the dividing step, the end portion on the center position side of the overhanging portion is formed to be inclined and extend with respect to one side of the main body portion.
  10. In the manufacturing method of the display device according to claim 8,
    In the dividing step, the end portion on the center position side of the projecting portion is formed so as to extend perpendicularly to one side of the main body portion.
  11. In the manufacturing method of the display device according to claim 8,
    In the dividing step, the end portion on the center position side of the protruding portion is formed to be curved.
  12. In the manufacturing method of the display device according to claim 7,
    The method for manufacturing a display device, wherein the display medium layer is a liquid crystal layer.
JP2008161626A 2008-06-20 2008-06-20 Display, and method for producing the same Pending JP2010002700A (en)

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JP2008161626A JP2010002700A (en) 2008-06-20 2008-06-20 Display, and method for producing the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10075673B2 (en) 2012-07-17 2018-09-11 Samsung Electronics Co., Ltd. System and method for providing image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10075673B2 (en) 2012-07-17 2018-09-11 Samsung Electronics Co., Ltd. System and method for providing image

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