JP4416637B2 - Display panel - Google Patents

Description

  The present invention relates to a configuration of a display panel.

  In general, a flat display panel such as a plasma display panel (PDP) or a field emission display panel (FED) that forms a display image by emitting light in a space between two substrates emits this light. In order to keep the space between the two substrates in a vacuum state or to keep the space filled with the discharge gas, etc., in the manufacturing process, from the space between the two substrates And the discharge gas or the like is filled into the evacuated space.

  FIG. 1 shows an embodiment in an exhaust process and a gas filling process at the time of manufacturing the display panel as described above, and FIG. 2 is a diagram for exhausting from the space in the display panel and filling the gas into the space. 2 shows a conventional configuration of a display panel.

  1 and 2, the display panel P includes a front glass substrate 1 and a rear glass substrate 2 that constitute a display surface of the panel, which are opposed to each other with a predetermined space therebetween, and a space S formed therebetween is represented by It is sealed by a sealing layer 3 formed at the peripheral edge between the front glass substrate 1 and the back glass substrate 2.

  In the space S between the front glass substrate 1 and the back glass substrate 2, a display area E1 where an image is formed and a non-display area E2 surrounding the display area E1 are formed in the center portion. Has been.

  And the exhaust hole 2A which connects the space S and the exterior is formed in the part which opposes the non-display area | region E2 of the corner part of the back glass substrate 2 (for example, refer patent document 1).

  In the manufacturing process of the display panel P having the above-described configuration, as shown in FIG. 1, after the exhaust pipe 4 is connected to the exhaust hole 2 </ b> A and the connection portion is sealed by the exhaust pipe sealing material 5. In the case where the exhaust from the exhaust pipe 4 is exhausted from the space S through the exhaust hole 2A, and the display panel is a PDP, for example, the exhaust pipe is placed in the vacuum space S after the exhaust process is completed. For example, a gas such as a discharge gas is introduced from 4 through the exhaust hole 2A.

  When the display panel is, for example, an FED, the exhaust pipe 4 is melted and sealed after completion of the exhaust process, and when the display panel is, for example, a PDP, after the gas introduction process is completed, The inside of S is sealed.

  Here, at the time of sealing the exhaust pipe 4, there is a possibility that a small amount of impure gas which is supposed to be generated by melting of the exhaust pipe 4 may enter the inside of the panel, and this impure gas enters the display area E 1 in the space S. In the case of entering and contaminating a structure for image formation, for example, in a PDP, the discharge voltage of the contaminated portion is increased, which may adversely affect image formation.

  For this reason, in the conventional display panel P, in order to prevent the impure gas generated when the exhaust pipe 4 is sealed from entering the display area E1, the distance between the formation position of the exhaust hole 2A and the display area E1. (Distance d in FIG. 2) is set to be large.

  However, when the distance d between the formation position of the exhaust hole 2A and the display area E1 of the display panel P increases as described above, the width B of the non-display area E2 where the exhaust hole 2A is located increases. Therefore, it is necessary to set the outer dimension of the display panel P to be large, and there arises a problem that the display device on which the display panel P is mounted becomes large.

  In recent years, as shown in FIG. 3, it has been proposed to configure a large multi-display device by arranging display panels P vertically and horizontally.

  When such a multi-display device is constituted by the display panels P, the non-display areas E2 and the seals that the display panels P have between the display areas E1 of the display panels P arranged vertically and horizontally are sealed. A joint portion J where an image is not formed is formed by an electrode lead-out portion (not shown) disposed outside the sealing layer 3 and the sealing layer 3, but as described above, the non-display area E2 of the display panel P is formed. When the width is increased due to the formation of the exhaust hole 2A, the width of the joint portion J of the multi-display device is also increased, so that the sense of unity of images formed by the display panels P constituting the multi-display device is impaired. This causes a problem that it becomes very unsightly for viewers.

JP 2000-36254 A

  An object of the present invention is to solve the problems in the conventional display panel as described above.

  In order to achieve the above object, the display panel according to the present invention (the invention described in claim 1) has a pair of substrates opposed to each other and a space formed between the pair of substrates is formed at the peripheral edge between the substrates. And a display region is provided in the central portion of the space between the substrates, and a non-display region is provided between the display region and the sealing layer. In a display panel in which a hole communicating the space between the substrates and the outside of the substrate is formed in a portion facing the non-display region of the substrate, a substantially rectangular region set in the center of the space between the pair of substrates Of the four corner portions of this region, a portion excluding a required region of at least one corner portion is set as a display region, and the required region of the corner portion is defined between the display region and the sealing layer. Integrated with hidden area between Set in the display area, the hole is, is characterized in that it is formed at a position opposed to or near the predetermined region of the required area of the corner portion which is set in the non-display region of one substrate.

  The present invention provides a display panel in which a space formed between a front glass substrate and a back glass substrate opposed to each other is sealed by a sealing layer, and a display region set in a central portion of the space between the substrates is It is set to be a portion excluding a required region of at least one corner portion of four corner portions of the substantially rectangular region, and seals with a required region and a display region of the corner portion of this substantially rectangular region. The area between the layers is set as a non-display area, and in the space between the substrates in the vicinity of the required area of the corner portion set as the non-display area of the rear glass substrate or in a position facing the required area. A display panel in which holes for exhausting air and introducing gas into the space are formed as the best embodiment.

  The display panel in this embodiment is provided with a required area to be a non-display area at the corner of the display area. The position of the exhaust or gas introduction hole formed at a distance is the center position of the display panel as compared with the conventional display panel by the required area provided at the corner of the display area. As a result, the width of the non-display area to be secured around the display area can be reduced compared to the conventional one, and the outer shape of the display panel can be reduced, and the multi-display It is possible to reduce the width of the joint portion between the display panels when configuring the apparatus.

  FIG. 4 shows, in one example of the embodiment of the display panel according to the present invention, the configuration of the display panel in the same portion as FIG. 2 with the front glass substrate removed.

  In FIG. 4, between the front glass substrate and the rear glass substrate 10 between the front glass substrate (not shown) on the inner side of the peripheral portion of the rear glass substrate 10 of the two glass substrates constituting the display panel. A sealing layer 11 that seals the space S1 formed therebetween is formed.

  In this space S1, an image display area E11 occupying the central portion thereof and a non-display area E12 surrounding the display area E11 between the display area E11 and the sealing layer 11 are set.

  When one corner of the four corners of the rear glass substrate 10 faces the non-display area E12 inside the sealing layer 11, the exhaust from the space S1 and this display panel is a PDP, for example. Is formed with an exhaust port 10A for introducing gas into the space S1.

  The display area E11 excludes a required area E12a in a corner portion facing a position where the exhaust port 10A of the rear glass substrate 10 is formed in a square area portion located in the central portion in the space S1. It is set to occupy the area.

  In the example shown in FIG. 4, the planar shape of the display area E11 is a shape in which a corner portion facing the formation position of the exhaust port 10A is chamfered by the triangular area E12a.

  The chamfered region E12a constitutes a non-display region integrated with the non-display region E12.

  In this way, the display area E11 is set to be chamfered from the square area by the area E12a, so that the exhaust port 10A is compared with the conventional display panel. It is possible to form it close to the center position of the region by the region E12a.

  That is, as shown in FIG. 5, if the area E12a is an isosceles triangle and the length of one side sandwiching the right angle is m, there is a space to be secured between the display area E11 and the exhaust port 10A. When d is the same as in the case of FIG. 2, the area E12a becomes a non-display area of the image, so that the interval between the formation position of the exhaust port 10A and the center position of the display panel is compared with the case of FIG. Thus, it is shortened by m / √2.

  The width of the non-display area E12 required for the upper and lower and left and right portions surrounding the display area E11 is reduced by reducing the distance between the formation position of the exhaust port 10A and the center position of the display panel in the case of FIG. Respectively, it becomes smaller by m / 2.

  That is, the width of the non-display area in FIG. 2 is B, whereas the width of the non-display area E12 in FIG. 4 is (B−m / 2).

  Therefore, according to this display panel, since the width of the non-display area E12 to be secured around the display area E11 is smaller than that of the conventional display panel, the outer shape of the display panel having the same size display area can be obtained. It becomes possible to reduce the size as compared with the conventional one.

  When a multi-display device is configured by this display panel, the width of the joint portion formed between the display panels is significantly smaller than that in the case where the multi-display device is configured by a conventional display panel. Therefore, it is possible to display an image on a large screen that is easy for the viewer to view without losing the sense of unity of the video formed by the multi-display device.

  In the above description, an example in which the shape of the region E12a is an isosceles triangle has been described. However, the shape of the region E12a is not limited to the illustrated example, and for example, other triangles, squares, and semicircles. Or any other shape.

  FIG. 6 shows an example of the cell structure when the display area of the display panel is set to a shape in which the corner portion facing the exhaust port formation position is chamfered by the triangular area.

  In FIG. 6, cells (for example, discharge cells in a PDP) C that are color-coded into three primary colors of red, green, and blue and constitute pixels for image formation are arranged in a matrix in the display area E21. A plurality of (two in the illustrated example) cells are formed at the lower end side (or the left end side of the lowermost row) of the leftmost cell C column (red cell column). Then, the number of cells that are not formed is increased by a predetermined number (in the example shown in the figure) from the leftmost column (lowermost row) to the inner column (row) by one column (one row). The cells C are formed in the display area E21 so as to decrease one by one.

  Due to the arrangement of the cells C in the display area E21, a triangular area E22a which is a non-display area as shown in the figure is formed at the corner of the display area E21, and this area E22a is formed around the display area E21. A non-display area E22 is formed integrally with the area.

  The exhaust port 20A is formed so as to face the region E22a in the non-display region E22 and to be close to the region E22a, or to open in the region E22a as shown.

  FIG. 7 shows an example of a cell structure when the shape of the non-display area formed at the corner of the display area is set to be a square.

  In FIG. 7, cells C are arranged in a matrix in the display area E31, but from the left side to the lower part (or the left part of several lines from the lower side) of several columns (two columns in the illustrated example). A plurality of cells (two in the illustrated example) are not formed.

  By such an arrangement of the cells C in the display area E31, a rectangular area E32a as shown in the figure is formed at the corner of the display area E31, and this area E32a is integrated with an area formed around the display area E31. Thus, a non-display area E32 is formed.

  The exhaust port 30A is formed so as to face the region E32a in the non-display region E32 and to be close to the region E32a or to open in the region E32a as shown.

  In each of the above display panels, the width of the non-display areas E12, E22, E32 can be reduced as the areas of the areas E12a, E22a, E32a are increased, but the areas E12a, E22a, As the area of E32a increases, the areas of the display areas E11, E21, and E31 decrease (the number of cells C decreases). Therefore, the size of the areas E12a, E22a, and E32a takes into account the reduction of the area of the display area. Is set.

  In each of the above examples, the case where one exhaust port is provided in the display panel has been described. However, when two or more exhaust ports are formed in the display panel, the display area Regions to be non-display regions as described above are formed in a plurality of corner portions at portions facing the positions where the exhaust ports are formed.

It is sectional drawing which shows the state at the time of the manufacturing process of the conventional display panel. It is a fragmentary sectional view in the II-II line of FIG. It is a front view which shows the multi-display apparatus comprised by the conventional display panel. It is a fragmentary sectional view which shows the Example of this invention. It is explanatory drawing which shows the relationship of the length of the principal part part of FIG. It is explanatory drawing which shows an example of arrangement | positioning of the cell in the Example of this invention. It is explanatory drawing which shows the other example of arrangement | positioning of the cell in the Example of this invention.

Explanation of symbols

1 ... Front glass substrate (substrate)
2,10 ... rear glass substrate (substrate)
10A, 20A, 30A ... Exhaust port (hole)
11 ... Sealing layer E11, E21, E31 ... Display area E12, E22, E32 ... Non-display area E12a, E22a, E32a ... Area (required area)
C ... cell

Claims (8)

A space formed between the pair of substrates facing each other and sealed between the pair of substrates is sealed by a sealing layer formed at a peripheral portion between the substrates, and a display area is provided in a central portion of the space between the substrates. A non-display area is provided between the display area and the sealing layer, and a hole communicating the space between the substrates and the outside of the substrate is formed in a portion of the pair of substrates facing the non-display area of one of the substrates. In the formed display panel,
Of the substantially rectangular area set at the center of the space between the pair of substrates, a portion excluding a required area of at least one corner of the four corners of this area is set as a display area. ,
The required area of the corner portion is set to a non-display area integrated with a non-display area between the display area and the sealing layer,
The hole is formed in the vicinity of a required area of the corner portion set in the non-display area of one substrate or in a position facing the required area.
A display panel characterized by that.   The display panel according to claim 1, wherein the hole is formed at a position maintaining a predetermined interval with respect to a boundary portion between the display area and a required area of the corner portion.   The display panel according to claim 1, wherein a required area of the corner portion is a substantially triangular area.   The display panel according to claim 1, wherein a required area of the corner portion is a substantially rectangular area.   The cells constituting the pixels are arranged in a matrix in the display area, and the cells are not formed in a required area of the corner portion, so that the required area of the corner portion is set as a non-display area. The display panel according to claim 1.   The number of cells in a row or column facing a required area of a corner portion of cells arranged in a matrix in the display area increases from the inner row or column to the outer row or column. The display panel according to claim 5, wherein the display panel is reduced.   The number of cells in a row or column facing a required area of a corner portion of cells arranged in a matrix in the display area is smaller than the number of cells in another row or column by a predetermined number. The display panel according to claim 5.   The display panel according to claim 1, wherein a multi-display device is configured by arranging a plurality of pixels vertically and horizontally.

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