JP2008191502A - Image display element and manufacturing method thereof - Google Patents

Abstract

An image display device is obtained in which when a plurality of elements are arranged in a matrix, the width of a seam portion can be reduced and the drawing of electrodes can be simplified.
A front panel, a back panel facing the front panel, a plurality of pixels arranged in a matrix between both panels and 1 to select a display or non-display state, and In an image display device having a plurality of electrodes for controlling pixels and having both panels 1 and 2 bonded together, a metal film wiring 5 is formed on the back surface 2a and the end surface 2b of the back panel 2, and the back panel Corresponding to the metal film wiring 5 formed on the end face 2b of No. 2, the electrode terminal 4 connected to the electrode was arranged on the front panel 1 side, and the metal film wiring 5 was brought into contact with the electrode terminal 4 and joined by soldering.
[Selection] Figure 1

Description

  The present invention provides, for example, an image display element constituting a large-sized image display device constituted by arranging a large number of liquid crystal display (LCD) panels, plasma display panels (PDP), electroluminescent (EL) display panels, and the like, and its manufacture. It is about the method.

A large display is a system in which a plurality of flat displays (for example, LCD panels, PDPs, EL display panels, etc.) as image display elements (or display units) are arranged in a matrix in order to realize high performance at a low price. Is adopted. An example of a conventional image display element constituting such a large display is shown in FIG. 16A and 16B are diagrams showing a part of the arrangement of image display elements (two-sheet arrangement), where FIG. 16A is a front view and FIG. 16B is a side view.
The image display element 20 includes a front panel 21 and a back panel 22 made of a glass plate or the like. The front panel 21 and the back panel 22 are opposed to each other with a predetermined interval, and a plurality of pixels 23 and a plurality of electrodes (not shown) for controlling them are arranged therebetween to form a light emitting layer ( Or a liquid crystal layer), and the periphery is sealed with a sealing portion 24.
When a lead line for applying a voltage to the electrode is drawn out from the periphery of the image display element 20, that is, from the joint portion 25 of the adjacent image display element 20, a lead allowance is required. When the gap Ga between the pixels 23 of the adjacent image display elements 20 in the joint portion 25 is larger than the pixel gap Gb in the same image display element, the joint portion 25 becomes conspicuous.
Therefore, as shown in the enlarged view of FIG. 2B, the back panel 22 is divided into two parts, a gap 26 is provided at the center, and a terminal 27 corresponding to the electrode is provided in the gap 26 part. A pin or a lead line 28 as shown in the figure is connected and pulled out to the outside of the back panel (for example, see Patent Document 1).

JP 2001-251571 A (3rd page, FIG. 2 to FIG. 4)

  In the conventional image display element shown in Patent Document 1, since the electrode lead line 28 is drawn out from the gap 26 formed in the back panel 22, it is effective as a structure that makes the joint portion 25 of the image display element 20 inconspicuous. However, since the lead wires 28 are connected to the wiring layers by connecting the lead wires 28 to a large number of terminals 27 existing between the narrow gaps 26, the connection with the terminals 27 becomes complicated and the lead-out method is complicated. There was a problem that workability was bad.

  The present invention has been made to solve the above-described problems. When a plurality of image display elements are arranged in a matrix, the width of the joint portion is reduced to increase the brightness of the image display element and the image. An object of the present invention is to provide an image display element in which the extraction of electrodes is simplified while achieving high resolution, and a method for manufacturing the same.

  An image display element according to the present invention includes a front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between both panels and selected to be in a display or non-display state. In an image display device having a plurality of electrodes to be controlled and having both panels bonded to each other with a pixel and an electrode interposed therebetween, metal film wiring is formed on the back surface and the end surface of the back panel, and on the end surface of the back panel Corresponding to the formed metal film wiring, an electrode terminal connected to the electrode is arranged on the front panel side, and the metal film wiring formed on the end face and the electrode terminal are joined by soldering.

  In addition, the back panel is divided between two adjacent pixel columns, a gap is formed in the divided portion, an electrode terminal connected to the electrode is disposed on the front panel side located in the gap, and the back panel is provided on the back side of the back panel. A substrate including a drive circuit is provided, and in the gap portion, the output terminal portion of the substrate and the electrode terminal of the front panel are arranged alternately with metal film wiring, a flexible printed circuit board, or conductive and insulating silicon rubber. It is connected by a connector.

  Further, the image display element manufacturing method according to the present invention includes a step of forming pixels, electrodes and wiring portions thereof on the front panel, a step of forming metal film wiring on the back surface and the end surface of the back panel, and firing. And bonding the front panel and the back panel, and joining the wiring portion of the front panel and the metal film wiring formed on the end face of the back panel by soldering.

  According to the image display element of the present invention, the metal film wiring is formed on the back surface and the end surface of the back panel of the image display element configured by bonding the pixel and the electrode between the front panel and the back panel, Since the metal film wiring formed on the end face of the back panel and the corresponding electrode terminal on the front panel side are joined by soldering, electrodes can be drawn out from a narrow space by a simple method, and between the image display elements In the case where a large screen is formed by arranging image display elements, the image quality is improved by reducing the joint. In addition, the lead-out of the electrode wiring is simplified and the cost is reduced.

  Also, the back panel is divided to form a gap, and the electrode terminals provided on the front panel side located in the gap and the output terminal portion of the substrate provided on the back side of the back panel are connected to metal film wiring or flexible print Connected with a substrate or a connector with conductive and insulating silicon rubber arranged alternately, simplifying the connection, facilitating the drawing of electrode wiring from gaps between narrow pixels, reducing costs, and displaying images The reliability of the element is improved.

  Furthermore, according to the method for manufacturing the image display element of the present invention, the front panel and the back panel manufactured in separate steps are bonded together, and the wiring portion on the front panel side and the metal film wiring on the back panel side are soldered. Since the connection is made, even when a display device such as an organic EL to which heating cannot be applied is used, it can be manufactured.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an image display element according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged view of a main part of FIG. A large number of image display elements are arranged in a matrix to form a large screen flat display. Examples of the display device of the image display element include an LCD panel, a PDP, and an EL display panel. The figure shows the image display element as viewed from the back.

As shown in FIG. 1, the image display element is arranged and displayed in a matrix form between a front panel 1 made of a glass plate and the like, a back panel 2 made of the same glass plate or the like and facing the front panel 1, and the two panels. Or, it has a plurality of pixels (not shown) for which the non-display state is selected and a plurality of electrodes (not shown) for controlling the pixels, and both panels 1 and 2 are attached with the pixels and the electrodes sandwiched therebetween. It is configured to be combined.
The back panel 2 is divided between two adjacent pixel columns, and a gap 3 is formed in the divided portion. In the figure, the gap 3 is enlarged and displayed for easy understanding, but it is actually a minute gap. In addition, since the pixels are arranged in a matrix, when referring to between the pixels, there are horizontal pixel rows and vertical pixel columns, but both include “two adjacent pixel columns”. .

  In addition, although the back panel 2 has shown what was divided into 2 at the center part, the number of divisions and a division position are not limited to this. The back panel 2 may be divided into three or more, and the dividing position may be another position as long as it is between adjacent pixels.

A plurality of electrode terminals 4 connected to the electrodes are arranged on the front panel 1 side positioned in the gap 3. The electrode terminal 4 is formed simultaneously with the same material as the electrode, for example, and is exposed from the gap.
On the other hand, a metal film wiring 5 is formed on the back surface 2a of the back panel 2 (the back side opposite to the front panel is referred to as “back surface”; hereinafter the same) and the end 2b of the gap 3. The metal film wiring 5 is formed by, for example, thick film printing. A connector 6 is connected to the end of the metal film wiring 5 on the back surface 2a side. The connector 6 is connected to an external drive circuit.

Details of the wiring section are shown in FIG. As shown in the drawing, in a state where the back panel 2 is bonded to the front panel 1, the electrode terminals are arranged such that the metal film wiring 5 at the end 2 b of the back panel 2 is in contact with the electrode terminal 4 on the front panel 1 side. 4 and the metal film wiring 5 are aligned. In a state where both panels 1 and 2 are bonded together, solder 7 is applied to the contact portion, and heated locally to melt and bond the solder 7.
Thus, soldering can be applied by using a metal film for the wiring. In particular, when the back panel 2 and the front panel 1 are bonded to each other with high accuracy, the metal film wiring 5 and the electrode terminal 4 are close to each other, and soldering is facilitated. Becomes higher. In addition, since the soldering enables wiring in a narrow space, the gap can be narrowed.

In the above description, the electrode terminal 4 and the metal film wiring 5 are connected in the gap 3 of the divided back panel 2, but this connection can be applied to other than the gap 3 of the back panel 2.
FIG. 3 is a perspective view showing an electrode connecting portion when the electrode terminal 4 is pulled out from the outer peripheral end portion of the front panel 1. When the back panel 2 is slightly smaller than the front panel 1 and overlapped, a stepped portion 1a is formed at the end, the electrode terminal 4 is exposed at the stepped portion 1a, and the ends of the electrode terminal 4 and the back panel 2 are exposed. The metal film wiring 5 formed on the portion 2b is brought into contact and joined by soldering.
By using a metal film for the wiring, the lead-out of the lead-out wire is suppressed, and the electrode lead-out allowance required for the lead-out of the terminal can be shortened. It is possible to reduce the dimension of the joint portion of the element.

In the electrode structure of the image surface element as described above, the back panel 2 is generally made of glass. For example, when an Ag paste is used as the metal film wiring 5, baking after coating is required, but there are display devices in which heating cannot be applied, such as organic EL.
Accordingly, a method for manufacturing an image display element as shown in FIGS.

A description will be given assuming that, for example, an organic EL element is used as the display device, and an Ag paste is used as the metal film wiring. In organic EL, a heat process such as heating in the manufacturing process cannot be applied.
First, an organic EL element, an electrode, and a wiring portion including an electrode terminal 4 connected to the electrode are formed on the front panel 1.
On the other hand, the back panel 2 is a separate process from the front panel 1, and the metal film wiring 5 as shown in FIG. 2, for example, is printed with Ag paste on the back and side surfaces of a material made of a glass plate and fired.
Next, the panels 1 and 2 are overlapped and bonded together, and the electrode terminal 4 of the wiring portion on the front panel 1 side and the metal film wiring 5 on the back panel 2 side are combined and soldered together.

As described above, the manufacture of the front panel 1 and the back panel 2 is made as a separate process, and the electrode terminal 4 and the metal film wiring 5 made of Ag paste are joined by solder, thereby enabling the wiring to be drawn out in a narrow space. Become. Since the wiring can be firmly connected by local heating by miniaturizing the solder, it can be applied to an organic EL that is weak against heat.
Needless to say, this method is not limited to the case of an organic EL element, but can be applied to other display devices.

  As described above, according to the image display element of the present embodiment, in the image display element configured to be bonded with the pixels and the electrodes sandwiched between the front panel and the back panel, the back panel and the end face of the back panel are provided. Metal film wiring is formed, and the metal film wiring on the end face and the corresponding electrode terminals on the front panel are joined by soldering, so it is possible to draw out the wiring of the electrode with a simple configuration from a narrow space, and display When the joint width between the elements is eliminated and the image display elements are arranged to form a large screen, the image quality is improved. Further, the extraction of the electrode is simplified, and the cost is reduced.

  In addition, according to the method for manufacturing an image display element of the present embodiment, a process of forming pixels, electrodes, and wiring portions thereof on the front panel, and metal film wirings are formed on the back surface and end surfaces of the back panel and fired. Process and bonding the front panel and the back panel to the front panel wiring part and the metal film wiring formed on the end face of the back panel by soldering. By bonding the laminated wiring with solder, it is possible to draw out the wiring from the electrode terminal in a narrow space, and it is also possible to apply to a heat-sensitive organic EL.

Embodiment 2. FIG.
FIG. 4 is a perspective view showing an image display element according to Embodiment 2 of the present invention, and FIG. 5 is an enlarged view of a main part of the main part of FIG. Since the structure of the image display element composed of the front panel 1 and the back panel 2 is the same as that of FIG. 1 of the first embodiment, the same parts are denoted by the same reference numerals, and the description will be omitted and the differences will be mainly described.

The difference is that a substrate 8 including a drive circuit is attached to the back surface of the back panel 2. The substrate 8 is attached to the back panel 2 in the figure, but for example, a separate support member may be provided in the gap portion of the back panel 2 and attached to the support member.
Similar to the first embodiment, the back panel 2 is divided between two adjacent pixel columns, and a gap 3 is formed in the divided portion. A plurality of electrode terminals 4 connected to the electrodes are disposed on the front panel 1 side located in the gap 3.
The metal film wiring 5 led out from the output terminal portion 9 of the drive circuit of the substrate 8 is formed along the end surface 2b on the gap 3 side from the back surface 2a of the back panel 2, so as to correspond to the electrode terminal 4. In a state where both panels 1 and 2 are bonded together, the contact portion between the tip of the metal film wiring 5 and the electrode terminal 4 is soldered.

  FIG. 5 is an enlarged perspective view of the terminal joint. The metal film wiring 5 led out from the output terminal portion 9 of the substrate 8 is formed so as to be arranged on the end surface 2b of the back panel 2 toward the electrode terminal 4 on the front panel 1 side. 4 is brought into contact with each other so that the solder 7 is applied to the contact portion. In order to realize reliable soldering, a metal film such as Ni is formed on the surface of the electrode terminal 4. The applied solder 7 is heated by a local heating means using a laser, the solder 7 is melted, and the metal film wiring 5 and the electrode terminal 4 are electrically joined.

  As described above, according to the present embodiment, the back panel is divided between two adjacent pixel columns to form a gap, and the electrode terminals connected to the electrodes are arranged on the front panel side located in the gap. Then, a substrate including a drive circuit is provided on the back side of the back panel, the metal film wiring drawn out from the output terminal portion of the drive circuit of the substrate is formed on the end surface on the gap side of the back panel, and the tip is in contact with the electrode terminal Since it is joined by soldering, the wiring is made into a metal film, which facilitates soldering, enables wiring in a narrow space, realizes a compact and strong connection, and ensures high reliability. The

Embodiment 3 FIG.
6 is a perspective view showing an image display element according to Embodiment 3 of the present invention, and FIG. 7 is a sectional view taken along line AA of FIG. Since the basic structure of the image display element composed of the front panel 1 and the back panel 2 is the same as that in FIG. 4 of the second embodiment, the same parts are denoted by the same reference numerals, and the description thereof will be omitted, focusing on the differences.
The difference is that, as shown in FIG. 6, the output terminal portion of the drive circuit provided on the substrate 8 is drawn out by a flexible printed circuit board 10 (hereinafter abbreviated as FPC) via the connector 6. A protrusion 11 is provided at the tip of the FPC 10, and the protrusion 11 and the electrode terminal 4 provided on the front panel 1 side of the gap 3 are joined.

The structure of the connecting portion will be described in more detail with reference to the enlarged sectional view of FIG. A conductive protrusion 11 having a thickness similar to the thickness of the back panel 2 is provided at the front end of the FPC 10. An anisotropic conductive film (anisotropic conductive film) is provided between the protrusion 11 and the electrode terminal 4. (Hereinafter abbreviated as ACF) 12 is inserted. The bonding is directly bonded to the electrode terminal 4 with the ACF 12 by pressing the protrusion 11 and thermocompression bonding.
At this time, if the thickness of the back panel 2 is made as thin as possible (for example, 0.3 mm or less), thermocompression bonding with the ACF 12 can be performed more easily.

  As described above, according to the invention of the present embodiment, the back panel is divided between two adjacent pixel columns to form a gap, and the electrode terminal connected to the electrode is arranged on the front panel side located in the gap. Since the substrate including the drive circuit is provided on the back surface side of the back panel, the protrusion is provided at the front end portion of the FPC drawn from the output terminal portion of the drive circuit of the substrate, and the protrusion and the electrode terminal are joined by the ACF. It is possible to simplify the joining operation, increase the certainty of joining, and provide a highly reliable image display element.

Embodiment 4 FIG.
FIG. 8 is a perspective view of an image display element according to Embodiment 4, and FIG. 9 is an enlarged cross-sectional view as seen from BB in FIG. FIG. 10 is a perspective view showing another example of the image display element according to the fourth embodiment. Since the basic structure of the image display element composed of the front panel 1 and the back panel 2 is the same as that of FIG. 6 of the third embodiment, the same parts are denoted by the same reference numerals, and the description will be omitted, focusing on the differences.
As shown in FIG. 8, the difference is the shape of the tip of the output terminal portion of the drive circuit drawn out by the FPC 13 via the connector 6.

  As shown in the enlarged cross-sectional view of FIG. 9, the front end portion of the FPC 13 has a width that can be inserted into the gap 3 of the back panel 2 and is bent at a substantially right angle by molding to form an electrode connection portion 13 a. It is thermocompression bonded to the electrode terminal 4 on the front panel 1 side. The other end of the FPC 13 is connected to the connector 6 as shown in FIG. 8 and is connected to the drive circuit of the substrate 8 via the connector 6.

FIG. 10 is a perspective view showing another example in which the tip portion of the FPC is molded substantially at a right angle. The connection is by FPC as in FIG. 8, but there is no connector on the board 8 side, it is pulled out directly from the output terminal portion 9 of the drive circuit by the FPC 14, and the tip portion can be inserted into the gap 3 at a substantially right angle. It is bent to form an electrode connecting portion 14a, and is thermocompression bonded to the electrode terminal 4 on the front panel 1 side by the ACF 12. The output terminal portion 9 and the FPC 14 are joined by soldering.
The FPC 14 may be individually molded as shown in FIG. 10, and after the electrode connecting portion 14 a is joined to the electrode terminal 4 by the ACF 12, the other end side may be soldered to the output terminal portion 9 of the substrate 8. As shown in FIG. 11, the electrode connecting portion 14a of the FPC 14 formed integrally with the end portion is thermocompression bonded to the electrode terminal 4 with the ACF 12, and then the integrated portion 14b is separated and individually joined to the output terminal portion 9. By doing so, it becomes easy to manufacture and connect the FPC.

  As described above, according to the invention of the present embodiment, the back panel is divided between two adjacent pixel columns to form a gap, and the electrode terminal connected to the electrode is arranged on the front panel side located in the gap. Then, a substrate including a drive circuit is provided on the back surface side of the back panel, and the front end of the FPC pulled out from the output terminal portion of the drive circuit is bent at a right angle with a width that can be inserted into the gap to form an electrode connection portion. Since the portion and the electrode terminal are joined by the ACF, it is possible to connect in a narrow space, simplify the joining work, increase the joining reliability, and provide a highly reliable image display element.

Embodiment 5. FIG.
FIG. 12 is a schematic side sectional view of an image display element according to the fifth embodiment. 13 is a cross-sectional view as seen from CC in FIG. 12, FIG. 14 is an enlarged cross-sectional view of a portion D in FIG. 13, and FIG. Since the structure of the image display element composed of the front panel and the back panel is the same as that in FIG. 1 of the first embodiment, the same parts are denoted by the same reference numerals, and the description will be omitted, focusing on the differences.

  In the present embodiment, as in the first embodiment, the electrode terminal 4 connected to the electrode is arranged on the front panel side 1 located in the gap 3 of the back panel 2. Further, a support member 16 is provided. A substrate 15 including a drive circuit is disposed on the back surface side of the back panel 2. The substrate 15 is not provided for each divided back panel 2, but is provided across a plurality of back panel gaps. , Supported by the support member 16. Further, in FIG. 12, the output terminal portion 17 is formed at a position facing the electrode terminal 4 of the substrate 15, although it is hidden behind the support member 16. And the connector 18 mentioned later is inserted between the electrode terminal 4 and the output terminal part 17, and the board | substrate 15 is fixed to the support member 16 in the pressurized state, By this, the electrode terminal 4 and output are provided via the connector 18. The terminal part 17 is joined.

In FIG. 12, the back panel 2 has a thickness of about 0.7 mm, for example. Moreover, the clearance gap 3 of the divided | segmented back surface panel 2 is 1 mm or less, for example. A support member 16 for fixing the substrate 15 is provided in the gap 3.
Hereinafter, a connection portion between the substrate 15 and the electrode terminal 4 provided on the front panel 1 will be described with reference to FIGS.

An output terminal portion of a driving circuit for controlling display / non-display of pixels corresponding to the electrode terminal 4 at a position facing the electrode terminal 4 formed in the gap 3 on the side facing the panel of the substrate 15. 17 is arranged.
As shown in FIG. 14, the connector 18 is formed by alternately arranging conductive and insulating silicon rubber. This arrangement pitch is made to coincide with the arrangement pitch of the electrode terminals 4 on the front panel 1 side and the arrangement pitch of the output terminal portions 17 on the substrate 15 side.
As indicated by the thick arrows, the electrode terminal 4 and the output terminal portion 17 can be electrically connected by pressing the substrate 15 against the front panel 1 and bringing it into contact therewith. As a method of fixing the substrate 15 to the front panel 1 while being pressed, the substrate 15 is soldered to the support member 16 while being pressed, or the support member 16 is screwed and the substrate 15 is screwed. The method to do is effective.

  As described above, according to the invention of the present embodiment, the back panel is divided between two adjacent pixel columns to form a gap, and the electrode terminal connected to the electrode is arranged on the front panel side located in the gap. In addition, a support member is provided, and a substrate including a drive circuit is disposed on the back surface side of the back panel by supporting the support member, and an output terminal portion is formed at a position facing the electrode terminal of the substrate. A connector in which conductive and insulative silicon rubber is alternately arranged is inserted between the terminal part and the electrode terminal and output terminal part are joined via the connector. Can be taken out.

1 is a perspective view showing an image display element according to Embodiment 1 of the present invention. FIG. 2 is a partially enlarged perspective view of FIG. 1. FIG. 10 is a perspective view showing another example of the image display element according to the first embodiment. It is a perspective view which shows the image display element by Embodiment 2 of this invention. FIG. 5 is a partially enlarged perspective view of FIG. 4. It is a perspective view which shows the image display element by Embodiment 3 of this invention. It is AA sectional drawing in FIG. It is a perspective view which shows the image display element by Embodiment 4 of this invention. It is BB sectional drawing in FIG. It is a perspective view which shows another example of the image display element by Embodiment 4 of this invention. It is a principal part expansion perspective view of FIG. It is a side view which shows the image display element by Embodiment 5 of this invention. It is CC sectional drawing in FIG. It is an expanded sectional view of the D section in FIG. It is EE sectional drawing in FIG. It is explanatory drawing which shows the conventional image display element.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front panel 1a Step part 2 Back panel 2a Back surface 2b End surface 3 Gap 4 Electrode terminal 5 Metal film wiring 6 Connector 7 Solder 8, 15 Board | substrate 9,17 Output terminal part 10,13,14 Flexible printed circuit board (FPC)
11 Projection 12 Anisotropic Conductive Film (ACF)
13a, 14a Electrode connection part 14b Integrated part 16 Support member 18 Connector.

Claims (6)

A front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between the two panels and selected for display or non-display, and a plurality of electrodes for controlling the pixels In the image display element that is configured by bonding the both panels across the pixel and the electrode,
Metal film wiring is formed on the back surface and the end surface of the back panel, corresponding to the metal film wiring formed on the end surface of the back panel, electrode terminals connected to the electrodes are arranged on the front panel side, An image display element, wherein the formed metal film wiring is brought into contact with the electrode terminal and joined by soldering. A front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between the two panels and selected for display or non-display, and a plurality of electrodes for controlling the pixels In the image display element that is configured by bonding the both panels across the pixel and the electrode,
The back panel is divided between two adjacent pixel columns, a gap is formed in the divided portion, an electrode terminal connected to the electrode is disposed on the front panel side located in the gap, and the back panel A substrate including a drive circuit is provided on the back surface side, and a metal film wiring led out from an output terminal portion of the drive circuit of the substrate is formed on an end surface on the gap side of the back panel, and the tip portion is the electrode terminal An image display element, wherein the contact portion is joined by soldering. A front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between the two panels and selected for display or non-display, and a plurality of electrodes for controlling the pixels In the image display element that is configured by bonding the both panels across the pixel and the electrode,
The back panel is divided between two adjacent pixel columns, a gap is formed in the divided portion, an electrode terminal connected to the electrode is disposed on the front panel side located in the gap, and the back panel A substrate including a drive circuit is provided on the back side, a protrusion is provided at the tip of the flexible printed circuit board drawn from the output terminal of the drive circuit of the substrate, and the protrusion and the electrode terminal are anisotropic. An image display element which is bonded by a conductive film. A front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between the two panels and selected for display or non-display, and a plurality of electrodes for controlling the pixels In the image display element that is configured by bonding the both panels across the pixel and the electrode,
The back panel is divided between two adjacent pixel columns, a gap is formed in the divided portion, an electrode terminal connected to the electrode is disposed on the front panel side located in the gap, and the back panel A substrate including a drive circuit is provided on the back surface side, and an electrode connection portion bent at a substantially right angle with a width that can be inserted into the gap is provided at the tip of the flexible printed circuit board drawn out from the output terminal portion of the drive circuit of the substrate. An image display element formed, wherein the electrode connection portion and the electrode terminal are joined by an anisotropic conductive film. A front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between the two panels and selected for display or non-display, and a plurality of electrodes for controlling the pixels In the image display element that is configured by bonding the both panels across the pixel and the electrode,
The back panel is divided between two adjacent pixel columns, a gap is formed in the divided portion, an electrode terminal connected to the electrode is disposed on the front panel side located in the gap, and a support member is provided. Provided, and supported by the support member, a substrate including a drive circuit is disposed on the back surface side of the back panel, an output terminal portion is formed at a position facing the electrode terminal of the substrate, and the electrode terminal and the A connector in which conductive and insulating silicon rubber are alternately arranged is inserted between the output terminal portion, and the electrode terminal and the output terminal portion are joined via the connector. element. A front panel, a back panel opposite to the front panel, a plurality of pixels arranged in a matrix between the two panels and selected for display or non-display, and a plurality of electrodes for controlling the pixels In the method for manufacturing an image display element, in which the both panels are bonded to each other with the pixel and the electrode interposed therebetween.
Forming the pixel, the electrode, and a wiring portion thereof on the front panel; forming a metal film wiring on the back surface and an end surface of the back panel; and firing the process; and bonding the front panel and the back panel And a step of joining the wiring portion of the front panel and the metal film wiring formed on the end surface of the back panel by soldering.

Images