WO2024176377A1 - 表示装置及びその製造方法 - Google Patents
表示装置及びその製造方法 Download PDFInfo
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- WO2024176377A1 WO2024176377A1 PCT/JP2023/006434 JP2023006434W WO2024176377A1 WO 2024176377 A1 WO2024176377 A1 WO 2024176377A1 JP 2023006434 W JP2023006434 W JP 2023006434W WO 2024176377 A1 WO2024176377 A1 WO 2024176377A1
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- display device
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
Definitions
- the present invention relates to a display device and a manufacturing method thereof.
- organic EL display devices In recent years, as an alternative to liquid crystal display devices, self-luminous organic EL display devices using organic electroluminescence (EL) elements have been attracting attention.
- organic EL display devices organic EL elements constituting the display area are formed on a flexible resin substrate, and flexible organic EL display devices have been proposed that have a flexible panel structure called COF (chip on film) or FOF (film on film), in which a film-like flexible wiring board such as an FPC (flexible printed circuit) is mounted in the frame area surrounding the display area.
- the wiring board is crimp-mounted (crimp-connected) to a terminal section provided at one end of the frame area of the flexible panel (display panel) using a conductive material such as an anisotropic conductive film (ACF). This electrically connects the terminals arranged on the terminal section and the wiring board via the conductive material.
- ACF anisotropic conductive film
- misalignment between terminals When the panel terminals arranged on the display panel and the board terminals arranged on the wiring board are crimped together, because they are made of flexible materials, misalignment between the corresponding panel terminals and board terminals (hereinafter simply referred to as “misalignment between terminals”) can occur. For this reason, various methods for inspecting misalignment between terminals and terminal structures (terminal patterns) for this purpose have been proposed.
- Patent Document 1 proposes a connection structure for a wiring board in which specific electrode terminals or connection terminals that are originally provided are given a different shape to be used for misalignment inspection so as to have an inspection portion where the distance between them and adjacent electrode terminals or connection terminals is partially reduced.
- Patent Document 2 proposes a COF-type optical display device in which a flexible substrate on which a driving IC is mounted is provided with a misalignment detection pattern corresponding to dummy bumps on the IC chip side.
- methods that can check for misalignment between terminals even when they are in a pre-crimped (temporary) state include checking the connection area using an image captured by a CCD camera, or shining light onto the connection area and measuring the transmitted or reflected light.
- Patent Document 3 proposes a flat display device in which a wedge-shaped tip (alignment mark) is provided on each lead wire that corresponds to a group of terminals on a tape carrier package (TCP) or other flexible wiring board and a group of pads on a transparent insulating substrate of a display panel that is connected to the terminals.
- TCP tape carrier package
- this flat display device alignment or misalignment is confirmed by using an image on a monitor that captures the location of the alignment mark with a CCD camera.
- misalignment between terminals is inspected using coaxial incident light and transmitted light.
- Specific inspection methods for misalignment include, for example, a method of detecting panel terminals and board terminals and measuring the distance between the detected terminals.
- the present invention was made in consideration of these points, and its purpose is to accurately inspect the misalignment between the terminals before and after connection without changing the terminal structure of the panel terminal on the display panel side and the board terminal on the wiring board side connected to it.
- the display device of the present invention is a display device comprising: a display panel having a display area, a frame area provided around the display area, a terminal section provided at one end of the frame area so as to extend in one direction, and a plurality of panel terminals arranged on the terminal section; and a wiring board on which a plurality of board terminals are arranged, each connected to the plurality of panel terminals, the terminal section being provided with a non-transparent terminal pattern extending in a width direction intersecting with the extension direction of the plurality of board terminals and overlapping in a plan view with the terminal section side ends of the plurality of board terminals at a connection position of the wiring board, the terminal pattern being characterized in that at least one through hole is formed at a position corresponding to the terminal section side ends of the plurality of board terminals.
- the manufacturing method of the display device is a manufacturing method of a display device including a display area, a frame area provided around the display area, a terminal portion provided at one end of the frame area so as to extend in one direction, and a plurality of panel terminals arranged on the terminal portion, and a wiring board on which a plurality of board terminals are arranged, each connected to the plurality of panel terminals, and is characterized by comprising a terminal pattern forming step of forming a non-transparent terminal pattern on the terminal portion, the non-transparent terminal pattern having at least one through hole at a position corresponding to the terminal portion side end of the plurality of board terminals, the non-transparent terminal pattern extending in a width direction intersecting with the extension direction of the plurality of board terminals, overlapping in a plan view with the terminal portion side end of the plurality of board terminals at the connection position of the wiring board, and the terminal pattern having at least one through hole, a connection step of crimping and connecting the wiring board to the terminal
- the present invention makes it possible to accurately inspect the misalignment between the terminals before and after connection without changing the terminal structure of the panel terminal on the display panel side and the board terminal on the wiring board side connected to it.
- FIG. 1 is a plan view showing a schematic configuration of a display panel of an organic EL display device according to a first embodiment of the present invention.
- FIG. 2 is a plan view showing a detailed configuration of the display area of the organic EL display device according to the first embodiment of the present invention.
- FIG. 3 is an enlarged plan view showing panel terminals and terminal patterns arranged in a terminal portion of the organic EL display device according to the first embodiment of the present invention.
- FIG. 4 is an enlarged plan view showing a state in which there is no misalignment between the substrate terminals and the corresponding panel terminals in the terminal portion of the organic EL display device according to the first embodiment of the present invention.
- FIG. 1 is a plan view showing a schematic configuration of a display panel of an organic EL display device according to a first embodiment of the present invention.
- FIG. 2 is a plan view showing a detailed configuration of the display area of the organic EL display device according to the first embodiment of the present invention.
- FIG. 3 is an enlarged
- FIG. 5 is an enlarged plan view showing a state in which there is misalignment between a substrate terminal and a corresponding panel terminal in a terminal portion of the organic EL display device according to the first embodiment of the present invention.
- FIG. 6 is an enlarged plan view showing a state in which there is no misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the first embodiment of the present invention.
- FIG. 7 is an enlarged plan view showing a state in which there is misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the first embodiment of the present invention.
- FIG. 6 is an enlarged plan view showing a state in which there is misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the first embodiment of the present invention.
- FIG. 8 is an enlarged plan view showing a state in which there is no misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the second embodiment of the present invention, and corresponds to FIG.
- FIG. 9 is an enlarged plan view showing a state in which there is misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the second embodiment of the present invention, and corresponds to FIG.
- FIG. 10 is an enlarged plan view for explaining through holes formed in a terminal pattern of a terminal portion of an organic EL display device according to a second embodiment of the present invention.
- FIG. 11 is an enlarged plan view showing a state in which there is no misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the third embodiment of the present invention, and corresponds to FIG.
- FIG. 12 is an enlarged plan view showing a state in which there is misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the third embodiment of the present invention, and corresponds to FIG.
- FIG. 13 is an enlarged plan view showing a state in which there is no misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the fourth embodiment of the present invention, and corresponds to FIG.
- FIG. 14 is an enlarged plan view showing a state in which there is misalignment between terminals in an inspection process using transmitted light of the terminal portion of the organic EL display device according to the fourth embodiment of the present invention, and corresponds to FIG.
- FIG. 1 is a plan view showing a schematic configuration of a display panel DP of an organic EL display device 10a of this embodiment.
- FIG. 2 is a plan view showing a detailed configuration of a display region D of the organic EL display device 10a.
- FIG. 3 is an enlarged plan view showing a panel terminal 1 and a terminal pattern 3 arranged in a terminal portion T of the organic EL display device 10a.
- FIG. 4 is an enlarged plan view showing a state in which there is no misalignment between a substrate terminal 21 and a corresponding panel terminal 1 in the terminal portion T of the organic EL display device 10a.
- FIG. 5 is an enlarged plan view showing a state in which there is a misalignment between a substrate terminal 21 and a corresponding panel terminal 1 in the terminal portion T of the organic EL display device 10a.
- FIG. 6 is an enlarged plan view showing a state in which there is no misalignment between the terminals in an inspection process using transmitted light L of the terminal portion T of the organic EL display device 10a.
- 7 is an enlarged plan view showing a state in which there is misalignment between terminals in an inspection process of a terminal portion T of an organic EL display device 10a using transmitted light L. Note that the panel terminals 1 are omitted in FIGS.
- the organic EL display device 10a includes a display panel DP having a rectangular display area D for displaying an image, a frame area F arranged in a frame shape around the display area D, and a terminal portion T arranged at one end (the right end in FIG. 1) of the frame area F in the direction X.
- the base substrate (not shown) constituting the display panel DP is formed of a flexible resin substrate such as polyimide resin.
- the display panel DP can be said to be a flexible panel.
- the rectangular display area D is exemplified, but this rectangular shape also includes, for example, an approximately rectangular shape with arc-shaped sides, arc-shaped corners, or a shape with a cutout on one side.
- a direction X parallel to the surface of the substrate constituting the device and a direction Y perpendicular to the direction X and parallel to the surface of the substrate are defined.
- a plurality of sub-pixels P are arranged in a matrix.
- a sub-pixel P having a red light-emitting region Lr for displaying red a sub-pixel P having a green light-emitting region Lg for displaying green
- a sub-pixel P having a blue light-emitting region Lb for displaying blue are arranged adjacent to each other.
- one pixel is composed of three adjacent sub-pixels P having a red light-emitting region Lr, a green light-emitting region Lg, and a blue light-emitting region Lb.
- the arrangement of the sub-pixels P is not particularly limited, and examples include a pentile arrangement and a stripe arrangement.
- a folding portion B that can be folded 180° (in a U-shape) with the direction Y (the vertical direction in FIG. 1) as the folding axis is provided so as to extend in the direction Y.
- the terminal portion T is provided so as to extend in the direction Y.
- An FPC 20 provided as a flexible wiring board (film-shaped board) is mounted on the terminal portion T.
- the organic EL display device 10a can be said to be a display device having a FOF type flexible panel structure in which the FPC 20 is mounted on the display panel DP (its terminal portion T), which is a flexible panel.
- a number of board terminals 21 are arranged at one end of the FPC 20 (the left end in Figure 1).
- the board terminals 21 can be considered connection terminals that are crimped and connected to the terminal portion T in order to electrically connect the FPC 20 to the display panel DP.
- the terminal structure of the terminal section T is a two-stage configuration in which the panel terminals 1, 2 are arranged at a distance from each other parallel to the extending direction X1, but is not limited to this and may be appropriately determined according to the board terminals 21 arranged on the FPC 20, and may be a one-stage configuration or a configuration with more than two stages.
- the panel terminal 1 is arranged closer to the end (edge) of the display panel DP than the panel terminal 2.
- the panel terminals 1, 2 can be said to be connection terminals to which the board terminals 21 are crimp-connected.
- the panel terminals 1 and 2 and the board terminal 21 are crimp mounted (crimp connected) using a conductive material (not shown), so that the panel terminals 1 and 2 and the board terminal 21 are electrically connected via the conductive material.
- a conductive material include conductive paste, ACF, etc.
- the panel terminals 1, 2 are arranged in multiple rows along the direction Y in which the terminal portions T extend. Also, as shown in FIGS. 3 to 5, the panel terminals 1, 2 are arranged to extend parallel to a direction X1 (inclined to the left in FIGS. 3 to 5) that intersects with the direction Y.
- the direction X1 in which the panel terminals 1, 2 extend may be inclined to the left or right with respect to the direction X, or may be parallel to the direction X (in this case, it is perpendicular to the direction Y).
- the direction in which the board terminals 21 extend at the connection position of the FPC 20 is the same as the direction X1 in which the corresponding panel terminals 1, 2 extend.
- the width direction of the board terminals 21 at the connection position of the panel terminals 1, 2 and the FPC 20 that intersects with the direction X1 is the same as the direction Y in which the terminal portions T extend.
- the width (dimension in the short direction (direction Y)) of the panel terminals 1 and 2 is not particularly limited, and may be set to be equal to or greater than the width of the board terminal 21 and such that adjacent panel terminals 1 or adjacent panel terminals 2 do not overlap in a plan view.
- a non-transparent (light-shielding, semi-transparent) terminal pattern 3 is provided in the terminal section T.
- the terminal pattern 3 is not electrically connected to the panel terminals 1 and 2, the board terminal 21, or any of the other conductive parts of the terminal section T.
- the terminal pattern 3 is an independent pattern for inspection purposes that does not perform any electrical connection.
- the terminal pattern 3 is adjacent to the terminal portion side end portions Et of the multiple panel terminals 1 that are arranged closer to the end (edge) of the display panel DP than the panel terminals 2, and is provided in a band shape in a plan view so as to extend parallel to the direction Y (in which the terminal portions T extend) that intersects with the direction X1 in which the panel terminals 1 extend.
- the band-shaped terminal pattern 3 in a plan view is provided parallel to the direction in which the terminal portions T extend.
- the terminal pattern 3 is arranged so as to overlap the terminal portion side ends Et of the multiple board terminals 21 in a plan view at the connection position of the FPC 20.
- the connection position of the FPC 20 refers to the position when the FPC 20 is correctly connected to the terminal portion T, and refers to the position where there is no misalignment between the board terminal 21 and the corresponding panel terminal 1, or where the misalignment between the terminals is within the design tolerance.
- the terminal pattern 3 is arranged above the terminal portion side ends Et of the multiple board terminals 21 at the connection position of the FPC 20, and straddles the terminal portion side ends Et of the multiple board terminals 21 when the FPC 20 is connected.
- the terminal pattern 3 may be provided in the same layer as the panel terminals 1 and 2, or in a layer (a different layer) different from the panel terminals 1 and 2. In the case of the same layer, the terminal pattern 3 and the panel terminals 1 and 2 are formed so as not to overlap. In the case of the same layer, the terminal pattern 3 and the panel terminals 1 and 2 may be formed with a gap between them, or may be formed without a gap between them.
- the terminal pattern 3 is formed of a non-transparent and non-conductive material, and is composed of a single layer or a laminated film of an organic insulating film made of an organic resin material such as an acrylic resin, polyurea resin, parylene resin, polyimide resin, or polyamide resin colored by mixing a colored inorganic insulating film or a black pigment.
- the terminal pattern 3 may be formed of a non-transparent and conductive material.
- the terminal pattern 3 is formed from a non-transparent material, for example, a single layer or a laminated film of a metal material such as aluminum or copper, a colored inorganic insulating film, a colored organic resin film, etc. That is, in the case of the separate layer, the terminal pattern 3 may be formed from a non-transparent conductive material, or may be formed from a non-transparent non-conductive material.
- the band-shaped terminal pattern 3 has through holes 4a formed at positions corresponding to the terminal portion side ends Et of the multiple board terminals 21 at the connection position of the FPC 20. At least one through hole 4a needs to be formed, and as shown in Figures 3 to 7, multiple through holes 4a may be formed corresponding to the number of multiple board terminals 21. Note that multiple through holes 4a may be formed at intervals of a predetermined number of terminals among the multiple board terminals 21 (for every predetermined number of board terminals 21).
- the through holes 4a include rectangular through holes formed in a rectangular shape in a plan view. In this embodiment, all of the multiple through holes 4a are formed in a rectangular shape. Hereinafter, the through holes 4a will also be referred to as rectangular through holes 4a.
- the width Wa (dimension in direction Y) of the rectangular through holes 4a is not particularly limited, and may be set to be equal to the width of the board terminal 21, or equal to or less than the sum of the width of the board terminal 21 and the designed tolerance for misalignment between the terminals (approximately +10%). Also, in this embodiment, the width Wa of the multiple through holes 4a adjacent to each other is all equal, as shown in Figure 6.
- the size (area) of the through-holes 4a is not particularly limited, and it is sufficient to set it to a size that is larger than or equal to the size at which the width of the transmitted light L that passes through the through-holes 4a can be measured in the inspection process described below.
- the sizes of the multiple through-holes 4a are all the same.
- the lengths (dimension in the direction X or the direction X1 in which the board terminals 21 extend) of the multiple through-holes 4a are also all the same.
- the through-hole 4a is formed, for example, by penetrating the terminal pattern 3 in the thickness direction. Specifically, the through-hole 4a is formed so as to penetrate the terminal pattern 3 and expose the surface of the underlying layer. In other words, the terminal pattern 3 is removed at the through-hole 4a.
- the method for manufacturing the organic EL display device 10a of this embodiment includes a terminal pattern forming process, a connection process, and a process for detecting misalignment between the terminals.
- the process for detecting misalignment between the terminals may be performed as an alignment process before the connection process, or may be performed as an inspection process after the connection process.
- the terminal pattern forming process refers to a process of forming a non-transparent terminal pattern 3 having at least one through hole 4a in the terminal portion T.
- the metal film is patterned to form the panel terminals 1, 2, etc.
- the insulating film is patterned to form a strip-shaped terminal pattern 3 extending parallel to the direction Y in which the terminal portion T extends in a plan view.
- the terminal pattern 3 is arranged so as to overlap with the terminal portion side end Et of the multiple board terminals 21 in a plan view at the designed connection position of the FPC 20 to be connected in the subsequent connection process.
- the through hole 4a is formed in the terminal pattern 3 using a known method such as etching.
- the through hole 4a is arranged at a position corresponding to the terminal portion side end Et of the multiple board terminals 21 in the designed connection position of the FPC 20.
- the through-holes 4a are formed so as to overlap the terminal portion side ends Et of the multiple board terminals 21 in a plan view.
- connection process refers to a process of crimping and connecting the FPC 20 to the terminal portion T of the display panel DP using ACF or the like. Through this process, the panel terminals 1 arranged in the terminal portion T and the board terminals 21 arranged on the FPC 20 are electrically connected via the ACF so as to correspond to each other.
- the inspection process is a process for detecting misalignment between the board terminal 21 on the FPC 20 side and the corresponding panel terminal 1 on the display panel DP side.
- transmitted light L is irradiated onto the terminal portion T of the display panel DP to which the FPC 20 is crimped.
- the presence or absence of the transmitted light L passing through the through hole 4a formed in the belt-shaped terminal pattern 3, or the width of the transmitted light L leaking from the gap between the through hole 4a and the corresponding board terminal 21 (overlapping in plan view) is measured.
- the measurement method include a visual confirmation method and a measurement method using a CCD camera (not shown) or the like.
- the through hole 4a and the corresponding board terminal 21 overlap in a plan view as shown in Figure 6, so transmitted light L cannot pass through (leak) through the through hole 4a. Therefore, the through hole 4a appears black to the naked eye, or appears black to a CCD camera. In this case, the inspection process is passed.
- the transmitted light L passes through (leaks out) from the through hole 4a (i.e., the above gap) in the portion where the through hole 4a and the corresponding board terminal 21 do not overlap in a plan view.
- the through hole 4a in the above portion appears white (bright), or appears white to the CCD camera.
- the width M (see FIG. 7) of the transmitted light L that appears white or appears white is measured.
- the width M of the transmitted light L refers to the distance between one end of the through hole 4a (the left end in FIG.
- the misalignment between the terminals can be detected. If the measured value of the misalignment between the terminals is within the design tolerance, the inspection is passed, and if it exceeds the tolerance, the inspection is failed.
- the organic EL display device 10a can be manufactured.
- the organic EL display device 10a of the present embodiment and the manufacturing method thereof can provide the following advantages.
- a non-transparent terminal pattern 3 is provided so as to overlap in a plan view with terminal portion side ends Et of the multiple substrate terminals 21 at the connection position of the FPC 20, and at least one through hole 4a is formed in a position corresponding to the terminal portion side ends Et in the terminal pattern 3.
- the terminal pattern 3 and its through hole 4a are provided in the terminal portion T, while the terminal structures of the panel terminal 1 on the display panel DP side and the substrate terminal 21 on the FPC 20 side connected thereto are not changed.
- the misalignment between the panel terminal 1 and the substrate terminal 21 is not detected by electrical current after connection (current test), but is inspected by measuring the presence or absence of light passing through the through hole 4a when the transmitted light L is irradiated to the terminal T using the through hole 4a formed in the terminal pattern 3. In this way, in the manufacturing method of the organic EL display device 10a, the presence or absence of the misalignment between the terminals can be confirmed at a glance (even by visual inspection) by the presence or absence of the transmitted light L passing through the through hole 4a, making it easy to judge.
- the method of measuring the width of the light improves the measurement accuracy of the misalignment between the terminals. Furthermore, since the misalignment between the terminals can be detected without electrical connection between the terminals, the inspection can be performed not only after the connection but also at the alignment stage before the connection. (3) From the above (1) and (2), in the organic EL display device 10a and its manufacturing method, it is possible to accurately inspect the misalignment between the panel terminal 1 on the display panel DP side and the board terminal 21 on the FPC 20 side connected thereto, without changing the terminal structure of these terminals 1, 21.
- FIG. 8 is an enlarged plan view showing a state where there is no misalignment between terminals in an inspection process using transmitted light L through the terminal portion T of the organic EL display device 10b of this embodiment, and corresponds to FIG. 6.
- FIG. 9 is an enlarged plan view showing a state where there is misalignment between terminals in an inspection process using transmitted light L through the terminal portion T of the organic EL display device 10b, and corresponds to FIG. 7.
- FIG. 10 is an enlarged plan view for explaining a through hole 4b formed in the terminal pattern 3 of the terminal portion T of the organic EL display device 10b.
- the overall configuration of the organic EL display device 10b is the same as that of the first embodiment except for the configuration of the terminal portion T, so a detailed description will be omitted here. Also, the same reference numerals will be used to designate the same components as those of the first embodiment, and their description will be omitted.
- the shape of the through holes 4b formed in the terminal pattern 3 in a plan view is different from the shape of the through holes 4a in the organic EL display device 10a.
- the through holes 4b include convex through holes formed in a convex shape in a plan view.
- all of the multiple through holes 4b are formed as convex through holes.
- the through holes 4b are also referred to as convex through holes 4b.
- the convex through-hole 4b is composed of a first region 4bi formed in a rectangular shape and two second regions 4bo formed in a rectangular shape smaller than the first region 4bi.
- the second regions 4bo are provided at both ends of the first region 4bi in the width direction (direction Y) of the board terminal 21.
- the second regions 4bo are also arranged in a portion of the first region 4bi that extends from the middle to one end in the direction X1 in which the board terminal 21 extends.
- the second regions 4bo are arranged at one end on the same side of the first region 4bi in the direction X1 (the right end in FIG. 10, the display area side end Ed side of the board terminal 21).
- the first region 4bi refers to a reference value region in which, even if the board terminals 21 are misaligned within this region, the measured misalignment between the terminals is within the design tolerance and the inspection is passed.
- the above-mentioned alignment process and/or inspection process are passed.
- the second region 4bo refers to an out-of-standard region where, if the position of the board terminals 21 is misaligned up to this region, the measured positional misalignment between the terminals exceeds the design tolerance, resulting in a failure in the inspection. As shown in FIG. 10, if a part of the board terminals 21 overlaps with the second region 4bo in a planar view, the board terminals 21 will fail the above-mentioned alignment process and/or inspection process.
- the width (narrow width) Wbf of the first region 4bi in the convex through hole 4b is not particularly limited, and may be set to be equal to the width of the board terminal 21 or less than the sum of the width of the board terminal 21 and the tolerance for misalignment between the terminals in the design (approximately +10%).
- the sum (wide width) Wbb of the width of the first region 4bi and the width of the two second regions 4bo in the convex through hole 4b is not particularly limited, and may be set to be greater than the narrow width Wbf and not overlap with adjacent convex through holes 4b in a plan view. In this embodiment, as shown in Figures 8 to 10, the narrow widths Wbf and wide widths Wbb of multiple adjacent convex through holes 4b are all equal.
- the size (area) of the through-holes 4b is not particularly limited, and it is sufficient to set it to a size that is larger than or equal to the size at which the width of the transmitted light L that passes through the through-holes 4b can be measured in the above-mentioned inspection process. Note that in this embodiment, the sizes of the multiple through-holes 4b are all the same. In other words, the lengths of the multiple through-holes 4b are also all the same.
- the organic EL display device 10b of this embodiment can be manufactured in the same manner as the organic EL display device 10a described above. Specifically, the shape of the through-holes may be changed in the hole forming process. The other processes are the same as those described above.
- the terminal pattern 3 has a convex through-hole 4b formed in place of the rectangular through-hole 4a. This makes it possible to check at a glance (even visually) whether all of the board terminals 21 are within the first region 4bi (region within the reference value) or whether a part of the board terminals 21 overlaps with the second region 4bo (region outside the reference value). This makes it even easier to determine the positional deviation between the panel terminals 1 and the board terminals 21.
- Fig. 11 is an enlarged plan view showing a state where there is no misalignment between terminals in an inspection process using transmitted light L through the terminal portion T of the organic EL display device 10c of this embodiment, and corresponds to Fig. 6.
- Fig. 12 is an enlarged plan view showing a state where there is misalignment between terminals in an inspection process using transmitted light L through the terminal portion T of the organic EL display device 10c, and corresponds to Fig. 7.
- the overall configuration of the organic EL display device 10c is the same as that of the first embodiment except for the configuration of the terminal portion T, so a detailed description will be omitted here. Also, the same components as those of the first embodiment will be denoted by the same reference numerals and their description will be omitted.
- through-holes 4c1, 4c2, and 4c3 are formed in a plan view, similar to the rectangular through-holes 4a of the organic EL display device 10a.
- the through-holes 4c include rectangular through-holes formed in a rectangular shape in a plan view.
- the widths of the multiple adjacent through-holes 4c are different from each other, unlike the multiple through-holes 4a having the same width Wa.
- the rectangular through-hole 4c includes a first rectangular through-hole 4c1 having a width Wc1, a second rectangular through-hole 4c2 having a width Wc2 larger than the width Wc1 of the first rectangular through-hole 4c1, and a third rectangular through-hole 4c3 having a width Wc3 larger than the width Wc2 of the second rectangular through-hole 4c2.
- the first rectangular through-hole 4c1, the second rectangular through-hole 4c2, and the third rectangular through-hole 4c3 are arranged side by side. In this way, the rectangular through-hole 4c has three through-holes 4c1, 4c2, and 4c3 with different widths Wc1, Wc2, and Wc3 as one constituent unit.
- the rectangular through-hole 4c has three through-holes 4c1, 4c2, and 4c3 as one constituent unit, but this is not particularly limited.
- two through-holes 4c1 and 4c2 with different widths Wc1 and Wc2 may be one constituent unit, or four or more through-holes including another rectangular through-hole (not shown) with a width greater than width Wc3 may be one constituent unit.
- At least one structural unit (repeated unit) of the through hole 4c is formed, and multiple structural units may be formed corresponding to the number of multiple board terminals 21. It is also possible to form multiple structural units at intervals of a predetermined number of terminals among the multiple board terminals 21 (for every predetermined number of board terminals 21).
- the width Wc1 of the first rectangular through-hole 4c1 is not particularly limited, and may be set to be equal to the width of the board terminal 21, or less than the sum of the width of the board terminal 21 and the tolerance for misalignment between the terminals in the design (approximately +10%). This makes it possible to check at a glance whether there is misalignment between the panel terminal 1 and the board terminal 21 by looking at the first rectangular through-hole 4c1. In the example shown in FIG. 11, it can be confirmed that there is no misalignment because transmitted light L does not pass through the first rectangular through-hole 4c1. On the other hand, in the example shown in FIG. 12, it can be confirmed that there is misalignment because transmitted light L passes through the first rectangular through-hole 4c1.
- the width Wc2 of the second rectangular through hole 4c2 is not particularly limited, and is set to be larger than the width Wc1 and smaller than the width Wc3 of the third rectangular through hole 4c3.
- the width Wc2 may be set to a dimension that does not cause a problem even if the substrate terminal 21 is misaligned (within the design tolerance), and may be set to be equal to the narrow width Wbf of the first region 4bi in the convex through hole 4b of the organic EL display device 10b. This allows the second rectangular through hole 4c2 to be seen at a glance to see whether the misalignment of the substrate terminal 21 terminal is within the tolerance. In the example shown in FIG.
- the transmitted light L passes through both sides (both ends) of the second rectangular through hole 4c2 in the width direction (direction Y), so it can be confirmed that the misalignment of the substrate terminal 21 terminal is within the tolerance.
- the transmitted light L passes through only one side in the width direction of the second rectangular through-hole 4c2 (the left side, one end in FIG. 12), so it is necessary to check the third rectangular through-hole 4c3, which will be described later, to see if it is necessary to adjust the position misalignment of the board terminal 21 terminal.
- the width Wc3 of the third rectangular through-hole 4c3 is not particularly limited, and is set to be larger than the width Wc2 and to be such that the third rectangular through-hole 4c3 does not overlap with the adjacent rectangular through-hole (the second rectangular through-hole 4c2 in Figs. 11 and 12) in a plan view.
- the width Wc3 may be set to a dimension that exceeds the tolerance of the misalignment between the terminals in the design and fails the inspection, and may be set to be equal to the wide width Wbb of the convex through-hole 4b of the organic EL display device 10b. This allows the third rectangular through-hole 4c3 to be checked at a glance to see whether the misalignment between the terminals is within or outside the design tolerance.
- the transmitted light L passes through both sides of the width direction (direction Y) of the third rectangular through-hole 4c3, so it can be confirmed that the misalignment between the terminals is within the design tolerance (passes).
- the transmitted light L passes through only one side of the width of the third rectangular through-hole 4c3, so it can be determined that the misalignment between the terminals exceeds the design tolerance (fails), and adjustment of the misalignment is necessary.
- the size (area) of the rectangular through-hole 4c is not particularly limited, and it is sufficient to set it to a size that is larger than or equal to the size at which the width of the transmitted light L that passes through the first rectangular through-hole 4c1 can be measured in the above-mentioned inspection process. Note that in this embodiment, as shown in Figures 11 and 12, although the widths Wc1, Wc2, and Wc3 of the three through-holes 4c1, 4c2, and 4c3 are different, they are all the same length.
- the organic EL display device 10c of this embodiment can be manufactured in the same manner as the organic EL display device 10a described above. Specifically, the size of the through-holes may be changed in the through-hole forming process. The other processes are the same as those described above.
- ⁇ Effects> According to the organic EL display device 10c and the manufacturing method thereof described above, in addition to the above-mentioned advantages (1) to (3), the following advantages can be obtained. (5) In the organic EL display device 10c and its manufacturing method, a rectangular through hole 4c is formed in the terminal pattern 3, in which three rectangular through holes 4c1, 4c2, and 4c3 of different widths are arranged side by side.
- Fig. 13 is an enlarged plan view showing a state where there is no misalignment between terminals in an inspection process using transmitted light L through the terminal portion T of the organic EL display device 10d of this embodiment, and corresponds to Fig. 6.
- Fig. 14 is an enlarged plan view showing a state where there is misalignment between terminals in an inspection process using transmitted light L through the terminal portion T of the organic EL display device 10d, and corresponds to Fig. 7.
- the overall configuration of the organic EL display device 10d is the same as that of the first embodiment except for the configuration of the terminal portion T, and therefore detailed description thereof will be omitted here. Also, components similar to those of the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.
- the organic EL display device 10d is an embodiment that combines the organic EL display device 10b of the second embodiment and the organic EL display device 10c of the third embodiment. As shown in Figures 13 and 14, the organic EL display device 10d has three through-holes 4d1, 4d2, and 4d3 (hereinafter collectively referred to as "through-holes 4d") formed similar to the through-holes 4c of the organic EL display device 10c.
- through-holes 4d the shapes and widths of the multiple through-holes 4d adjacent to each other are different in a plan view.
- the through hole 4d includes a first rectangular through hole 4d1, a first convex through hole 4d2, and a second convex through hole 4d3.
- the first rectangular through hole 4d1, the first convex through hole 4d2, and the second convex through hole 4d3 are arranged side by side.
- the through hole 4d includes both a rectangular through hole formed in a rectangular shape in plan view and a convex through hole formed in a convex shape in plan view. In this way, the through hole 4d has three through holes 4d1, 4d2, and 4d3 with different shapes and widths as one constituent unit.
- At least one structural unit (repeated unit) of the through hole 4d is formed, and multiple structural units may be formed corresponding to the number of multiple board terminals 21. It is also possible to form multiple structural units at intervals of a predetermined number of terminals among the multiple board terminals 21 (for every predetermined number of board terminals 21).
- the first convex through-hole 4d2 and the second convex through-hole 4d3 are defined with first regions 4d2i and 4d3i corresponding to the first region 4bi, and first regions 4d2o and 4d3o corresponding to the two second regions 4bo, similar to the through-hole 4b of the organic EL display device 10b.
- the second region 4d2o of the first convex through-hole 4d2 and the second region 4d3o of the second convex through-hole 4d3 are arranged at one end on different sides of the first region 4d2i, 4d3i in the direction X1 in which the substrate terminal 21 extends, as shown in Figures 13 and 14.
- the second region 4d2o of the first convex through-hole 4d2 is arranged on the display area side end Ed side of the substrate terminal 21, while the second region 4d3o of the second convex through-hole 4d3 is arranged on the terminal portion side end Et side of the substrate terminal 21.
- the sum (wide width) Wd2b of the width of the first region 4d2i and the width of the two second regions 4d2o in the first convex through hole 4d2 is larger than the width Wd1 of the first rectangular through hole 4d1.
- the sum (wide width) Wd3b of the width of the first region 4d3i and the width of the two second regions 4d3o in the second convex through hole 4d3 is larger than the wide width Wd2b of the first convex through hole 4d2.
- the width of the first region 4d2i in the first convex through hole 4d2 and the width of the first region 4d3i in the second convex through hole 4d3 are equivalent to the width Wd1 of the first rectangular through hole 4d1.
- the width Wd1 of the first rectangular through-hole 4d1 is not particularly limited, and may be set to be equal to the width of the board terminal 21, or less than the sum of the width of the board terminal 21 and the tolerance for misalignment between the terminals in the design (approximately +10%).
- the width Wd1 of the first rectangular through-hole 4d1 is not particularly limited, and may be set to be equal to the width of the board terminal 21, or less than the sum of the width of the board terminal 21 and the tolerance for misalignment between the terminals in the design (approximately +10%).
- the width Wd2b of the first convex through hole 4d2 is not particularly limited, and is set to be greater than the width Wd1 and smaller than the width Wd3b of the second convex through hole 4d3.
- the width Wd2b may be set to a dimension that does not cause a problem even if the board terminal 21 is misaligned (within the design tolerance), and may be set to be equal to the narrow width Wbf of the first region 4bi in the convex through hole 4b of the organic EL display device 10b or the width Wc2 of the second rectangular through hole 4c2 of the organic EL display device 10c.
- the width Wd3b of the second convex through-hole 4d3 is not particularly limited, and is set to be larger than the width Wc2 and such that the second convex through-hole 4d3 does not overlap with the adjacent through-hole (the first convex through-hole 4d2 in Figures 13 and 14) in a plan view.
- the width Wd3b may be set to a dimension that exceeds the tolerance for misalignment between the terminals in the design and fails the inspection, and may be set to be equal to the width Wbb of the convex through-hole 4b of the organic EL display device 10b or the width Wc3 of the third rectangular through-hole 4c3 of the organic EL display device 10c.
- the convex shape of the second convex through-hole 4d3 can be used to more easily and accurately check whether all of the board terminals 21 are within the first region 4di (region within the reference value) or whether part of the board terminals 21 overlaps with the second region 4do (region outside the reference value).
- the size (area) of the through holes 4d is not particularly limited, and it is sufficient to set it to a size that is larger than or equal to the size at which the width of the transmitted light L that passes through the first rectangular through hole 4c1 or the first regions 4d2i, 4d3i can be measured in the above inspection process.
- the lengths of the three through holes 4d1, 4d2, 4d3 are all equal.
- the organic EL display device 10d of this embodiment can be manufactured in the same manner as the organic EL display device 10a described above. Specifically, the shape and size of the through-holes may be changed in the hole forming process. The other processes are the same as those described above.
- the plurality of through holes are all formed to have the same length, but this is not limited thereto and they may be different lengths.
- an organic EL display device has been described as an example of a display device, but the present invention is not limited to organic EL display devices and can be applied to any flexible display device.
- the present invention can be applied to a flexible display device equipped with a QLED (Quantum-dot light emitting diode), which is a light emitting element that uses a quantum dot-containing layer.
- QLED Quantum-dot light emitting diode
- the present invention is useful for flexible display devices.
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Abstract
Description
図1~図7は、本発明に係る表示装置の第1の実施形態を示している。なお、以下の各実施形態では、発光素子を備えた表示装置として、有機EL素子を備えた有機EL表示装置を例示する。ここで、図1は、本実施形態の有機EL表示装置10aの表示パネルDPの概略構成を示す平面図である。図2は、有機EL表示装置10aの表示領域Dの詳細構成を示す平面図である。図3は、有機EL表示装置10aの端子部Tに配置されたパネル端子1と端子パターン3とを示す拡大平面図である。図4は、有機EL表示装置10aの端子部Tにおいて、基板端子21と対応するパネル端子1との端子間の位置ずれが無い状態を示す拡大平面図である。図5は、有機EL表示装置10aの端子部Tにおいて、基板端子21と対応するパネル端子1との端子間の位置ずれが有る状態を示す拡大平面図である。図6は、有機EL表示装置10aの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが無い状態を示す拡大平面図である。図7は、有機EL表示装置10aの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが有る状態を示す拡大平面図である。なお、図6及び図7では、パネル端子1が省略されている。
端子パターン形成工程は、端子部Tに、少なくとも1つの透孔4aを有する非透明の端子パターン3を形成する工程をいう。例えば、表示パネルDPを構成する基板表面に、周知の方法を用いて、金属膜を成膜した後に、当該金属膜をパターニングして、パネル端子1,2等を形成する。このパネル端子1,2を形成する前後に成膜する無機絶縁膜又は有機絶縁膜を利用して、当該絶縁膜をパターニングすることにより、平面視で端子部Tが延びる方向Yと平行に延びる帯状の端子パターン3を形成する。このとき、後続の接続工程で接続するFPC20の設計上の接続位置において複数の基板端子21の端子部側端部Etと平面視で重なるように、端子パターン3を配置する。透孔4aは、例えばエッチング等の周知の方法を用いて、端子パターン3に形成する。このとき、FPC20の設計上の接続位置において複数の基板端子21の端子部側端部Etに対応する位置に、透孔4aを配置する。換言すると、透孔4aは、複数の基板端子21の端子部側端部Etと平面視で重なるように形成する。
パネル端子1及び基板端子21間の確実な導通を確保する観点から、接続工程の前に、パネル端子1と基板端子21の位置合わせ(仮圧着)を行うことが好ましい。換言すると、有機EL表示装置10aの製造方法では、圧着前の位置合わせ時点でも、端子間の位置ずれの確認が可能である。具体的な工程は後述する検査工程と同様である。
接続工程は、表示パネルDPの端子部TにACF等を用いてFPC20を圧着接続する工程をいう。この工程により、端子部Tに配列された複数のパネル端子1と、FPC20に配列された複数の基板端子21とがそれぞれ対応するように、ACFを介して電気的に接続される。
検査工程は、FPC20側の基板端子21とそれに対応する表示パネルDP側のパネル端子1との端子間の位置ずれを検出する工程をいう。この工程では、まず、FPC20が圧着接続された表示パネルDPの端子部Tに透過光Lを照射する。続いて、透過光Lを照射した状態で、帯状の端子パターン3に形成された透孔4aを通り抜ける透過光Lの有無、又は透孔4aとそれに対応する(平面視で重なる)基板端子21との隙間から漏れ出る透過光Lの幅を測定する。測定方法としては、例えば、目視で確認する方法、CCDカメラ(不図示)等を用いて計測する方法等が挙げられる。
以上説明したように、本実施形態の有機EL表示装置10a及びその製造方法によれば、以下の効果を得ることができる。
(1)有機EL表示装置10aでは、端子部Tにおいて、FPC20の接続位置における複数の基板端子21の端子部側端部Etと平面視で重なるように非透明の端子パターン3が設けられ、端子パターン3における当該端子部側端部Etに対応する位置に少なくとも1つの透孔4aが形成されている。このように、有機EL表示装置10aでは、端子部Tにおいて、端子パターン3及びその透孔4aが設けられる一方、表示パネルDP側のパネル端子1及びこれに接続するFPC20側の基板端子21の端子構造はいずれも変更されない。
(2)有機EL表示装置10aの製造方法では、パネル端子1と基板端子21端子との端子間の位置ずれを、接続後の電気的な通電による検知(通電検査)ではなく、端子パターン3に形成された透孔4aを利用して端子部Tに透過光Lを照射したときに透孔4aを通り抜ける光の有無又は光の幅を測定することにより検査する。このように、有機EL表示装置10aの製造方法では、端子間の位置ずれの有無が、透孔4aを通り抜ける透過光Lの有無を一目で(目視でも)確認でき、その判断が容易になる。また、パネル端子1及び基板端子21を安定して検出できない従来の端子構造と比較して、光の幅を測定する方法では、端子間の位置ずれの測定精度が向上する。さらに、端子間の電気的な接続無しに端子間の位置ずれを検出できるため、接続後の検査のみではなく、接続前の位置合わせの段階でも検査可能である。
(3)上記(1)及び(2)より、有機EL表示装置10a及びその製造方法では、表示パネルDP側のパネル端子1及びこれに接続するFPC20側の基板端子21の端子構造を変更することなく、これら端子1,21の接続前後において端子間の位置ずれを精度よく検査できる。
次に、図8~図10を用いて、本発明の第2の実施形態について説明する。図8は、本実施形態の有機EL表示装置10bの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが無い状態を示す拡大平面図であり、図6に相当する図である。図9は、有機EL表示装置10bの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが有る状態を示す拡大平面図であり、図7に相当する図である。図10は、有機EL表示装置10bの端子部Tの端子パターン3に形成された透孔4bを説明するための拡大平面図である。なお、有機EL表示装置10bの全体構成は、端子部Tの構成以外、上記第1の実施形態の場合と同じであるため、ここでは詳しい説明を省略する。また、第1の実施形態と同様の構成部分については同一の符号を付してその説明を省略する。
以上に説明した有機EL表示装置10b及びその製造方法によれば、上記(1)~(3)の効果に加えて、以下の効果を得ることができる。
(4)有機EL表示装置10b及びその製造方法では、端子パターン3に、矩形状透孔4aに代えて凸状透孔4bが形成される。これにより、凸形状を利用して、基板端子21のすべてが第1領域4bi(基準値内領域)内に入っているか、又は基板端子21の一部が第2領域4bo(基準値外領域)と重なっているかを一目で(目視でも)確認できる。したがって、パネル端子1と基板端子21端子との端子間の位置ずれの判断がより一層容易になる。
次に、図11及び図12を用いて、本発明の第3の実施形態について説明する。図11は、本実施形態の有機EL表示装置10cの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが無い状態を示す拡大平面図であり、図6に相当する図である。図12は、有機EL表示装置10cの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが有る状態を示す拡大平面図であり、図7に相当する図である。なお、有機EL表示装置10cの全体構成は、端子部Tの構成以外、上記第1の実施形態の場合と同じであるため、ここでは詳しい説明を省略する。また、第1の実施形態と同様の構成部分については同一の符号を付してその説明を省略する。
以上に説明した有機EL表示装置10c及びその製造方法によれば、上記(1)~(3)の効果に加えて、以下の効果を得ることができる。
(5)有機EL表示装置10c及びその製造方法では、端子パターン3に、幅の異なる3つの矩形状透孔4c1,4c2,4c3が並んで配されている矩形状透孔4cが形成される。これにより、幅の相違を利用して、第1矩形状透孔4c1ではパネル端子1と基板端子21端子との端子間の位置ずれの有無を;第2矩形状透孔4c2では基板端子21端子の位置ずれ調整が必要かどうかを;第3矩形状透孔4c3では端子間の位置ずれが設計上の許容値内外であるかを、それぞれ一目で確認できる。したがって、パネル端子1と基板端子21端子との端子間の位置ずれの判断がより一層容易になる。
次に、図13及び図14を用いて、本発明の第4の実施形態について説明する。図13は、本実施形態の有機EL表示装置10dの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが無い状態を示す拡大平面図であり、図6に相当する図である。図14は、有機EL表示装置10dの端子部Tの透過光Lによる検査工程において、端子間の位置ずれが有る状態を示す拡大平面図であり、図7に相当する図である。なお、有機EL表示装置10dの全体構成は、端子部Tの構成以外、上記第1の実施形態の場合と同じであるため、ここでは詳しい説明を省略する。また、第1の実施形態と同様の構成部分については同一の符号を付してその説明を省略する。
以上に説明した有機EL表示装置10d及びその製造方法によれば、上記(1)~(5)と同様の効果を得ることができる。
上記各実施形態では、複数の透孔の長さはすべて同等に形成されているが、これに限定されず、相違していてもよい。
DP 表示パネル
Et 端子(パネル端子、基板端子)の端子部側端部
F 額縁領域
T 端子部
X1 端子が延びる方向
Y 端子が延びる方向とは交差する方向、端子部が延びる方向
1,2 パネル端子
3 端子パターン
4a,4b,4c,4d 透孔
10a,10b,10c,10d 有機EL表示装置
20 FPC(配線基板)
21 基板端子
Claims (20)
- 表示領域と、上記表示領域の周囲に設けられた額縁領域と、上記額縁領域の一端部に一方向に延びるように設けられた端子部と、上記端子部に配列された複数のパネル端子とを有する表示パネルと、
上記複数のパネル端子とそれぞれ接続される複数の基板端子が配列された配線基板と、を備えた表示装置であって、
上記端子部には、上記複数の基板端子の延びる方向とは交差する幅方向に延び、上記配線基板の接続位置において該複数の基板端子の端子部側端部と平面視で重なる非透明の端子パターンが設けられ、
上記端子パターンには、上記複数の基板端子の上記端子部側端部に対応する位置に、少なくとも1つの透孔が形成されていることを特徴とする表示装置。 - 請求項1に記載された表示装置において、
上記端子パターンは平面視で帯状に設けられることを特徴とする表示装置。 - 請求項1又は2に記載された表示装置において、
上記表示パネルは複数の積層膜で構成されており、
上記端子パターンは上記複数のパネル端子と同一層に設けられることを特徴とする表示装置。 - 請求項3に記載された表示装置において、
上記端子パターンは非導電性であることを特徴とする表示装置。 - 請求項1又は2に記載された表示装置において、
上記表示パネルは複数の積層膜で構成されており、
上記端子パターンは上記複数のパネル端子とは異なる層に設けられることを特徴とする表示装置。 - 請求項1~5の何れか1つに記載された表示装置において、
上記透孔は平面視で矩形状に形成された矩形状透孔を含むことを特徴とする表示装置。 - 請求項6に記載された表示装置において、
上記矩形状透孔は複数形成されており、
上記基板端子の幅方向において、互いに隣接する上記複数の矩形状透孔の寸法が同じであることを特徴とする表示装置。 - 請求項7に記載された表示装置において、
上記基板端子の幅方向において、上記矩形状透孔の寸法が上記基板端子の寸法と同じであることを特徴とする表示装置。 - 請求項6に記載された表示装置において、
上記矩形状透孔は複数形成されており、
上記基板端子の幅方向において、互いに隣接する上記複数の矩形状透孔の寸法が異なることを特徴とする表示装置。 - 請求項7に記載された表示装置において、
上記複数の矩形状透孔は、上記基板端子の幅方向において、上記基板端子の寸法と同じ第1矩形状透孔と、
上記第1矩形状透孔の寸法よりも大きい第2矩形状透孔とを含むことを特徴とする表示装置。 - 請求項10に記載された表示装置において、
上記複数の矩形状透孔は、上記基板端子の幅方向において、上記第2矩形状透孔の寸法よりも大きい第3矩形状透孔を含み、
上記第1矩形状透孔と上記第2矩形状透孔と上記第3矩形状透孔が並んで配されていることを特徴とする表示装置。 - 請求項1~6の何れか1つに記載された表示装置において、
上記透孔は平面視で凸状に形成された凸状透孔を含み、
上記凸状透孔は、矩形状に形成された第1領域と、
上記第1領域における上記基板端子の幅方向の両端に設けられ、該第1領域よりも小さい矩形状に形成された2つの第2領域とで構成され、
上記2つの第2領域は、上記第1領域における上記基板端子が延びる方向の一端部に設けられることを特徴とする表示装置。 - 請求項12に記載された表示装置において、
上記凸状透孔は複数形成されており、
上記2つの第2領域は、上記第1領域における同じ側の一端部に配置されていることを特徴とする表示装置。 - 請求項13に記載された表示装置において、
上記基板端子の幅方向において、互いに隣接する上記複数の凸状透孔における上記第1領域の寸法と上記2つの第2領域の寸法の合計が同じであることを特徴とする表示装置。 - 請求項13又は14に記載された表示装置において、
上記基板端子の幅方向において、上記凸状透孔における上記第1領域の寸法が上記基板端子の寸法と同じであることを特徴とする表示装置。 - 請求項12に記載された表示装置において、
上記凸状透孔は複数形成されており、
上記2つの第2領域は、上記第1領域における異なる側の一端部に配置されていることを特徴とする表示装置。 - 請求項16に記載された表示装置において、
上記基板端子の幅方向において、互いに隣接する上記複数の凸状透孔における上記第1領域の寸法と上記2つの第2領域の寸法の合計が異なることを特徴とする表示装置。 - 請求項17に記載された表示装置において、
上記複数の透孔は、上記基板端子の幅方向において、平面視で矩形状に形成され、上記基板端子の寸法と同じ第1矩形状透孔と、
上記第1領域の寸法と上記2つの第2領域の寸法の合計が上記第1矩形状透孔の寸法よりも大きい第1凸状透孔と、
上記第1領域の寸法と上記2つの第2領域の寸法の合計が上記第1凸状透孔よりも大きい第2凸状透孔とを含み、
上記第1矩形状透孔と上記第1凸状透孔と上記第2凸状透孔が並んで配されていることを特徴とする表示装置。 - 請求項1~18の何れか1つに記載された表示装置において、
上記透孔の少なくとも一部は上記複数の基板端子と平面視で重なっていることを特徴とする表示装置。 - 表示領域と、上記表示領域の周囲に設けられた額縁領域と、上記額縁領域の一端部に一方向に延びるように設けられた端子部と、上記端子部に配列された複数のパネル端子とを有する表示パネルと、
上記複数のパネル端子とそれぞれ接続される複数の基板端子が配列された配線基板と、を備えた表示装置の製造方法であって、
上記端子部に、上記複数の基板端子の延びる方向とは交差する幅方向に延び、上記配線基板の接続位置において該複数の基板端子の端子部側端部と平面視で重なり、該複数の基板端子の上記端子部側端部に対応する位置に、少なくとも1つの透孔を有する非透明の端子パターンを形成する端子パターン形成工程と、
上記端子部に上記配線基板を圧着接続する接続工程と、
上記端子部に透過光を照射して、上記透孔を通り抜ける透過光の幅を測定することにより、上記複数の基板端子とそれに対応する上記複数のパネル端子との端子間の位置ずれを検出する工程を備えることを特徴とする表示装置の製造方法。
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| PCT/JP2023/006434 WO2024176377A1 (ja) | 2023-02-22 | 2023-02-22 | 表示装置及びその製造方法 |
| CN202380090466.2A CN120457473A (zh) | 2023-02-22 | 2023-02-22 | 显示装置及其制造方法 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000347207A (ja) * | 1999-06-04 | 2000-12-15 | Nec Corp | 液晶表示装置及び液晶表示装置の製造方法 |
| US20070040286A1 (en) * | 2005-08-17 | 2007-02-22 | Au Optronics Corp. | Structure for circuit assembly |
| JP2007086276A (ja) * | 2005-09-21 | 2007-04-05 | Seiko Epson Corp | 電気光学装置、電子機器及び電気光学装置の製造方法 |
| JP2013201352A (ja) * | 2012-03-26 | 2013-10-03 | Dexerials Corp | 接続体の製造方法、接続方法 |
| US20170211782A1 (en) * | 2014-09-24 | 2017-07-27 | Boe Technology Group Co., Ltd. | Alignment device and alignment method |
-
2023
- 2023-02-22 WO PCT/JP2023/006434 patent/WO2024176377A1/ja not_active Ceased
- 2023-02-22 CN CN202380090466.2A patent/CN120457473A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000347207A (ja) * | 1999-06-04 | 2000-12-15 | Nec Corp | 液晶表示装置及び液晶表示装置の製造方法 |
| US20070040286A1 (en) * | 2005-08-17 | 2007-02-22 | Au Optronics Corp. | Structure for circuit assembly |
| JP2007086276A (ja) * | 2005-09-21 | 2007-04-05 | Seiko Epson Corp | 電気光学装置、電子機器及び電気光学装置の製造方法 |
| JP2013201352A (ja) * | 2012-03-26 | 2013-10-03 | Dexerials Corp | 接続体の製造方法、接続方法 |
| US20170211782A1 (en) * | 2014-09-24 | 2017-07-27 | Boe Technology Group Co., Ltd. | Alignment device and alignment method |
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