JP5388262B2 - Viewfinder device - Google Patents

Description

  The present invention relates to a viewfinder device in which an organic electroluminescence element is incorporated.

  Conventionally, in a single-lens reflex camera, it is known that an organic electroluminescence element (hereinafter referred to as an organic EL element) is disposed in the vicinity of a subject image formation position between a pentaprism and a focusing screen. In this organic EL element, a light emitting unit is provided in a photographing field area for observing a subject, and various marks such as a focus frame are emitted by the light emitting unit (see Patent Document 1).

The light emitting unit is configured by laminating an anode layer, an organic layer, and a cathode layer, and an electrode line for supplying current from outside the light emitting display unit is connected to each of the anode layer and the cathode layer of each light emitting unit. The Since the light emitting unit is provided in the photographing field of view, part of the electrode wire is also wired to the photographing field of view of the finder device. Here, since the electrode line is formed of a transparent material, light from the subject is transmitted, and the subject can be observed even in the portion where the electrode line is provided.
Japanese Patent No. 3539251

  However, in the above finder apparatus, the electrode wire wired in the field of view for photographing can transmit the light from the subject, but cannot completely transmit the light. Hinder.

  Therefore, the present invention has been made in view of the above problems, and in a finder device in which a light-emitting display unit made of an organic EL element is arranged, an electrode line wired to the light-emitting display unit is used for subject observation. The purpose is not to interfere.

  A finder device according to the present invention is connected to a light emitting unit for supplying a current to the transparent substrate, a light emitting unit provided on the transparent substrate and composed of an organic layer containing an organic light emitting material, and the light emitting unit. As described above, a finder device that includes an electrode wire wired on a transparent substrate, and when a current is supplied to the light emitting portion, the light emitting portion emits light, and the light emitting display portion that displays by this light emission is observed from the viewfinder window The electrode line is a transparent electrode line, and the line width is 8 μm or less.

  A plurality of electrode lines are preferably wired on the transparent substrate, and the plurality of electrode lines are preferably spaced apart from each other by 100 μm or more.

  The light emitting display unit includes a photographing field area that transmits reflected light from the subject and is used for subject observation. In this case, the plurality of electrode lines only need to be separated from each other by 100 μm or more in the imaging visual field region. For example, in order to reduce the space of the substrate, the electrode lines are set to 100 μm or less. It may be close.

  Similarly, the line width of the electrode line only needs to be 8 μm or less in the photographing visual field region, and the line width may be set to 8 μm or larger outside the photographing visual field region, for example, for the purpose of suppressing electric resistance.

  The light emitting unit is configured by sequentially laminating an anode layer, an organic layer, and a cathode layer. Here, it is preferable that a plurality of electrode wires are connected to the same anode layer or the same cathode layer. In this case, the plurality of anode lines connected to the same anode layer or the same cathode line are preferably separated from each other by 100 μm or more. In addition, it is preferable that the plurality of electrode lines separated from each other by 100 μm or more are wired in parallel.

  In the present invention, the electrode line wired to the light emitting display unit is a transparent electrode line, and the line width is 8 μm or less, thereby making it difficult to visually recognize the electrode line, and the electrode line hinders observation of the subject. To prevent.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a finder device of a single-lens reflex camera to which the present embodiment is applied. In the following description, a case where the present invention is applied to a single-lens reflex camera will be described. However, the present invention can also be applied to other optical devices such as a microscope and a compact camera.

  The viewfinder device 10 includes an objective lens 11, a quick return mirror 12, a focus plate 13, a pentaprism 14, an eyepiece lens 15, a light emitting display unit 16, and a viewfinder window 17.

  The reflected light reflected by the subject is reflected by the quick return mirror 12 via the objective lens 11, guided to the focus plate 13, and once formed on the focus plate 13. Thereafter, the reflected light is reflected twice by the pentaprism 14 and enters the finder window 17 via the eyepiece 15. When a release switch (not shown) is pressed, the quick return mirror 12 is retracted from the optical path, and the reflected light guided by the objective lens 11 is guided to a CCD, a film, or the like to expose them.

  The light emitting display unit 16 is composed of an organic EL element, and is disposed between the focusing plate 13 and the pentaprism 14 on a transverse region that intersects an optical path through which light from the subject passes. That is, the light emitting display unit 16 is disposed in the vicinity of the subject imaging position. Light emitted from each light emitting unit of the light emitting display unit 16 is also incident into the finder window 17 through the pentaprism 14 and the eyepiece 15. Each light emitting unit is provided on the lower surface side of the light emitting display unit 16 in FIG. 1, and light from the light emitting display unit 16 enters the finder window 17 through the transparent substrate 31 (see FIG. 2). The light emitting display unit 16 can also be disposed between the quick return mirror 12 and the focus plate 13.

  A schematic plan view of the light emitting display unit 16 is shown in FIG. The light-emitting display unit 16 includes a rectangular finder visual field region 21 and a finder visual field 24 that surrounds the upper, lower, left, and right outer sides of the finder visual field region 21 and is formed in a rectangular frame shape. The finder visual field area 21 is visible from the finder window 17, but the finder visual field area 24 is an area that cannot be viewed from the finder window 17.

  The rectangular finder visual field area 21 includes a rectangular photographing visual field area 22 for observing a subject, and an information display area 23 that surrounds the upper, lower, left, and right outer sides of the photographing visual field area 22 and is formed in a rectangular frame shape. Is done. The imaging view field region 22 is a region through which reflected light from the subject is incident and transmitted, and is a light transmission region used for subject observation. The information display area 23 is an area in which light incident on the finder window 17 (see FIG. 1) is shielded from a subject by a light shielding mask (not shown). May be. The various types of information include various symbol marks indicating the exposure value used for photographing, the photographing mode, and the presence or absence of flash emission.

  The light emitting display unit 16 is provided with a plurality of light emitting units 26A to 26L. The light emitting units 26A and 26L are provided inside the virtual rectangle R having the center point P as the center of gravity so as to sandwich the center point P of the imaging visual field region 22, and the light emitting units 26B to 26I are on the sides of the virtual rectangle R. Provided. Specifically, light emitting units 26B to 26E are provided at the corners of the virtual rectangle R, and light emitting units 26F to 26I are provided at the centers of the left, right, upper, and lower sides of the virtual rectangle R. The light emitting units 26J and 26K are provided outside the virtual rectangle R, and are provided so as to sandwich the virtual rectangle R between the left and right sides of the virtual rectangle R.

  The light emitting display unit 16 is composed of a transparent substrate 31, and an organic layer sandwiched between an anode layer and a cathode layer is provided on the transparent substrate 31 to form the light emitting units 26A to 26L. Each light emission part 26A-26L is comprised from the organic layer laminated | stacked independently, respectively. And since the light emission parts 26A-26K are connected to the anode wire which can control electric current supply independently, light emission control is possible independently, respectively. On the other hand, as will be described later, since the anode line 27L for supplying a current to the light emitting unit 26L is connected to the anode layer of the light emitting unit 26A, the light emitting unit 26L cannot be independently controlled to emit light. The light emission / non-light emission switching of the unit 26L follows the light emission / non-light emission switching of the light emission unit 26A.

  In the single-lens reflex camera according to the present embodiment, the light emitting units 26A to 26L are used as focusing points. Therefore, for example, when shooting is performed with autofocus, distance measurement is performed at the positions of the light emitting units 26A to 26L, and one light emitting unit 26A to 26L corresponding to the in-focus position is caused to emit light. However, when the focus is in the center of the photographing visual field area 22, both the light emitting units 26A and 26L emit light.

  On the transparent substrate 31, electrode lines for supplying a current to each organic layer, that is, anode lines and cathode lines are further wired. In FIG. 2, the anode line is indicated by a solid line and the cathode line is indicated by a dotted line. In the present embodiment, a plurality of anode lines 27 </ b> A to 27 </ b> L that are electrically connected to a power supply unit provided outside the light emitting display unit 16 are wired as anode lines.

  Among the plurality of anode lines, the anode lines 27 </ b> A to 27 </ b> J extend vertically downward from the upper side 22 </ b> U of the imaging field 22 through the viewfinder outside field 24 and the information display area 23. To do. The anode lines 27A to 27J extend linearly from the upper side 22U in the vertical direction, or extend linearly from the upper side 22U in the vertical direction and then be bent or the like as appropriate, and are wired to the light emitting units 26A to 26J. On the other hand, among the plurality of anode lines, the anode line 27K is wired from the right side 22R of the imaging visual field region 22 to the light emitting unit 26K. Further, the anode line 27L is wired between the light emitting units 26A and 26L inside the imaging visual field region 22.

  The tip ends of the anode lines 27A to 27K extending to the light emitting portions 26A to 26K are formed in accordance with the shape of the light emitting portion, and are formed as the above-described anode layer. The anode wire 27L has one end connected to the anode layer of the light emitting portion 26A and the other end extending to the light emitting portion 26L. The other end of the light emitting portion 26L is formed as an anode layer.

  An organic layer is stacked and stacked above the anode layer in each of the light emitting units 26A to 26L, and a cathode layer is further stacked and stacked on the organic layer. The organic layer and the cathode layer are formed along the shape of the light emitting part.

  The cathode line is composed of a main cathode line 28, a plurality of branch cathode lines 29A to 29E, and connection cathode lines 30A to 30F. The main cathode line 28 is wired to the outside of the imaging visual field area 22 (that is, the viewfinder out-of-view field 24 and the information display area 23), and is electrically connected to an electrode part provided outside the light emitting display unit 16. . The main cathode line 28 has a line width larger than that of each of the branched cathode lines 29A to 29E and the connecting cathode lines 30A to 30F. For example, the line width is larger than 8 μm.

  The branched cathode lines 29 </ b> A to 29 </ b> E are branched from the main cathode line 28 and extend from the outside of the imaging field area 22 to the inside through the lower side 22 </ b> D of the imaging field area 22. Each of the branched cathode lines 29A to 29E extends vertically to the light emitting portions 26J, 26D, 26I, 26E, and 26K, and is laminated on the organic layer in each of the light emitting portions 26J, 26D, 26I, 26E, and 26K. Connected to the cathode layer.

  Each of the connecting cathode lines 30A to 30F is extended and wired in a vertical direction between predetermined light emitting units in order to electrically connect a light emitting unit to which a branch cathode line is not connected to an external power supply unit. For example, each of the connecting cathode lines 30A and 30C is wired between the light emitting units 26D and 26F and between the light emitting units 26E and 26G, one end is connected to the cathode layer of the light emitting units 26D and 26E, and the other end is connected to each other. It is connected to the cathode layer of the light emitting units 26F and 26G. Similarly, the connecting cathode lines 30D and 30F are respectively wired between the light emitting units 26B and 26F and between the light emitting units 26C and 26G.

  The connecting cathode line 30B is wired between the light emitting unit 26I and the light emitting units 26A and 26L, one end of which is connected to the cathode layer of the light emitting unit 26I, and the other end is branched into two. The connected cathode lines are connected to the cathode layers of the light emitting portions 26A and 26L, respectively. Similarly, the connection cathode line 30E has one end branched into two, and the branched connection cathode lines are connected to the light emitting units 26A and 26L, respectively, and the other end is connected to the light emitting unit 26H.

  With the configuration as described above, each of the light emitting units 26A to 26L is electrically connected to the main cathode line 28 via a branched cathode line or via a branched cathode line, a connecting cathode line, and a cathode layer. It is possible to supply current to ˜26L from the power supply unit.

  Each electrode line (that is, anode line and cathode line) is formed from a transparent conductive metal compound such as ITO (Indium Tin Oxide), ATO (antimony doped tindioxide), ZnO (zinc oxide), IZO (Indium Zinc Oxide), It is configured as a transparent electrode line. The organic layer is composed of a hole transport layer, an organic light-emitting layer composed of an organic light-emitting material, an electron transport layer composed of an electron transport material, etc. It is configured to emit predetermined light. In addition, as above-mentioned, an anode layer is formed from a transparent conductive metal compound integrally with anode wire 27A-27K, and is comprised as a transparent electrode layer. On the other hand, the cathode layer is formed of a non-transparent cathode metal material such as aluminum, indium, magnesium, calcium, titanium, yttrium, lithium, and alloys thereof and is configured as a non-transparent electrode layer. It may be formed of a transparent conductive metal compound or the like and configured as a transparent electrode layer.

  As is apparent from FIG. 2, the anode lines 27A to 27K are arranged so as to extend in the horizontal direction adjacent to each other on the outside of the photographing visual field area 22 (that is, outside the finder visual field area 24 and the information display area 24). The anode lines 27 </ b> A to 27 </ b> K to be wired are, for example, close to less than a predetermined distance M.

  The anode lines 27A to 27J wired in close proximity as described above are separated from each other outside the imaging visual field region 22, and in the upper side 22U, the adjacent anode lines 27A to 27J are separated from each other by a predetermined distance M or more. Become. The anode lines 27A to 27J are wired to each light emitting unit while maintaining a state where the anode lines 27A to 27J are separated by the predetermined distance M or more. That is, in the imaging visual field region 22, the anode lines 27A to 27J are wired so as to be separated from each other by a predetermined distance M or more. Similarly, the anode line 27K and the anode line 27L are wired within the imaging visual field region 22 at a predetermined distance M or more from the other anode lines 27A to 27L.

  In the present embodiment, the anode lines 27A to 27J are two anode lines that are relatively close to each other and are grouped together, extend vertically downward from the upper side 22U, and are grouped together. Is disposed relatively far away from other anode lines. However, the two adjacent anode wires that are close together are also wired with a predetermined distance M or more as described above. For example, the anode wires 27C and 27I are bundled and extend in parallel vertically downward, but they are also separated by a predetermined distance M or more. In addition, the anode lines 27C and 27I are relatively separated from the anode lines 27G and 27H adjacent thereto.

  Similarly, in the imaging visual field region 22, the cathode lines (that is, the branched cathode lines 29A to 29E and the connecting cathode lines 30A to 30F) are also wired so as to be separated from each other by a predetermined distance M or more. The branched portions of the connection cathode lines 30B and 30E extend in the horizontal direction and then in the vertical direction, but the portions extending in the vertical direction are also separated by a predetermined distance M or more.

  For example, the branched cathode lines 29A to 29E are separated by a predetermined distance M or more on the lower side 22D, and the light emitting units 26J, 26D, 26I, 26E, and 26K are maintained while being kept separated by the predetermined distance M or more. Wired in parallel. Further, for example, the connection cathode line 30B is separated from the connection cathode lines 30A and 30C wired in parallel to the left and right by a predetermined distance M or more.

  Further, in the present embodiment, each of the anode lines 27A to 27L is disposed at a predetermined distance M or more from each of the cathode lines (that is, the branched cathode lines 29A to 29E and the connection cathode lines 30A to 30F).

  For example, as shown in FIG. 2, the anode line 27I is wired in parallel to the anode line 27C and further to the connection cathode lines 30F and 30C while being separated by a distance D1, which is a predetermined distance M or more, in the imaging visual field region 22. The Further, for example, the anode line 27E extends vertically downward in parallel to the anode line 27G while being separated by a distance D2 in the imaging visual field region 22, and is then routed vertically in parallel to the branch cathode line 29E while being separated by a distance D3. The distances D2 and D3 are set to a distance equal to or greater than the predetermined distance M.

  The line widths of the anode lines 27A to 27L and the cathode lines (that is, the branched cathode lines 29A to 29E and the connecting cathode lines 30A to 30F) inside the imaging visual field region 22 are set to 8 μm or less, preferably 7 μm or less. . By setting the line width of the electrode lines in the imaging field of view to the above range, when the light emitting display unit is observed from the finder window, it becomes difficult to see the cathode line and the anode line in the imaging field of view.

  The predetermined distance M is 100 μm, preferably 300 μm. That is, in the imaging visual field region 22, the electrode lines (anode lines 27A to 27L, branch cathode lines 29A to 29E, connection cathode lines 30A to 30F) are wired 100 μm or more, preferably 300 μm or more apart from each other. It becomes. If the electrode lines are wired with a smaller distance than the above range, two or more electrode lines that are wired in parallel as one electrode line even if the line width of the electrode lines is set to 8 μm or less. It is visually recognized and obstructs the observer's observation of the subject.

  As described above, in the present embodiment, when the observer looks into the finder window by narrowing the line width of each transparent electrode line and widening the distance between each electrode line in the imaging field of view. Furthermore, it is possible to make it difficult to visually recognize the electrode wire.

  In addition, the line width of the electrode line in this specification means the length from one edge part to the other edge part when the electrode line is viewed from above. For example, as shown in FIG. When the lower side has a trapezoidal cross-sectional shape longer than the upper side, the line width refers to the width W at the lower side.

  In the present embodiment, for example, the anode line 27F and the cathode lines 30A and 30D are connected to the light emitting unit 26F. In the vicinity of the light emitting unit 26F, the anode line 27F and the cathode lines 30A and 30D each have a predetermined distance M. May be close to: However, in this specification, by connecting to the same light emitting part, even if the electrode line is close to the other electrode line by a predetermined distance M or less, the part other than the vicinity of the light emitting part is separated from the other electrode line. If it is separated by a predetermined distance M or more, it is referred to as the above-described “electrode line wired with a predetermined distance M or more”.

  FIG. 4 is an enlarged plan view of the right side portion of the light emitting display unit according to the second embodiment of the present invention. Hereinafter, the difference between the second embodiment and the first embodiment will be described.

  In the present embodiment, two anode lines extending in parallel from the upper side 22U toward the same light emitting unit in the imaging visual field region 22 are wired. The tip portions of the two anode lines extending toward the same light emitting part are brought close to each other in the vicinity of the light emitting part, and are connected to each other in the light emitting part to form one anode layer. Here, the two anode lines wired in parallel are separated by the predetermined distance M or more.

  For example, as shown in FIG. 4, in the field of view field 22, the anode lines 27G1 and 27G2 extend from the upper side 22U toward the light emitting unit 26G, being separated from each other by a predetermined distance M and substantially parallel to each other. The anode wires 27G1 and 27G2 are connected such that their tip portions are brought close to each other in the vicinity of the light emitting portion 26G, and the connecting portion is formed as one anode layer. On the anode layer, an organic layer and a cathode layer are sequentially laminated in the same manner as in the first embodiment.

  Similarly, two parallel branch cathode lines are extended from the main cathode line 28 to each of the light emitting units 26J, 26D, 26I (see FIG. 2), 26E, and 26K. Here, the two branch cathode lines extending toward the same light emitting part extend toward each light emitting part while being spaced apart by a predetermined distance M or more, and their tip parts are brought close to each other in the vicinity of the light emitting part, In the light emitting part, it is connected to one cathode layer.

  For example, two branched cathode lines 28E1 and 28E2 that are parallel to each other with a predetermined distance M or more are extended vertically upward from the main cathode line 28 toward the light emitting unit 26E. The two branch cathode lines 28E1 and 28E2 are brought close to each other in the vicinity of the light emitting unit 26E and connected to one cathode layer stacked on the light emitting unit 26E.

  Also, as the connecting cathode lines wired between the predetermined light emitting units, two cathode lines are wired in parallel while being separated by a predetermined distance M or more. For example, connecting cathode lines 30C1 and 30C2 that are separated by a predetermined distance M or more and extend in the vertical direction are wired between the light emitting units 26E and 26G. The connection cathode lines 30C1 and 30C2 have one end approaching the light emitting unit 26E and connected to the cathode layer of the light emitting unit 26E, and the other end approaching the light emitting unit 26G and the cathode layer of the light emitting unit 26G. Connected to. Similarly, for example, the connecting cathode lines 30F1 and 30F2 wired between the light emitting units 26C and 26G are wired in parallel at a predetermined distance M or more, and both ends thereof are connected to the cathode layers of the light emitting units 26C and 26G. The

  The predetermined distance M is 100 μm, preferably 300 μm, as in the first embodiment, that is, two anode lines extending in parallel toward the same light emitting part in the imaging field region 22, or The two cathode lines are separated by 100 μm or more, preferably 300 μm or more. In the present embodiment as well, as in the first embodiment, the other electrode lines in the imaging visual field region 22 are also 100 μm or more, preferably 300 μm or more apart.

  If the line width of the anode line is set thin as described above, there is a risk of disconnection or an increase in resistance value. In this embodiment, two anode lines for supplying current are connected to each anode layer. Is done. Therefore, a current is supplied to each light emitting unit via the two anode wires, and an increase in resistance value can be prevented. In addition, even if one of the two anode wires connected to the same light emitting portion is disconnected, a current can be supplied to the light emitting portion by the other one anode wire. Can be stopped. Similarly, for the cathode line, since two cathode lines for supplying current are connected to each light emitting part, it is possible to prevent the light emitting part from stopping light emission due to an increase in resistance value and disconnection.

  In the first and second embodiments, the anode line and the cathode line may be reversed, and the anode line is branched into a plurality of branch electrode lines from one main electrode line connected to an external power supply unit. And the cathode line may be composed of a plurality of electrode lines connected to an external power supply unit. Further, in the second embodiment, two electrode lines for supplying current are connected to each anode layer and each cathode layer, but two electrode lines are connected to only one of them, Only one electrode line may be connected to the other. Of course, each anode layer and each cathode layer may be connected to three or more anode lines and three or more cathode lines for supplying current.

  Next, in order to confirm the effect of this invention, the Example shown below was implemented, However, This invention is not necessarily limited to the Example shown below.

[Example 1]
In Example 1, the electrode lines and the anode layer having the pattern shown in FIG. 5 were wired on the transparent substrate 100. As the transparent substrate 100, a glass substrate having a size of 14 mm × 27 mm and a transmittance of 85% was used. In Example 1, the first to sixth anode layers 101 to 106 patterned in a circle were formed on the transparent substrate 100. The first and fourth anode layers 101 and 104 were arranged vertically on the left side portion of the transparent substrate 100 and had a diameter of 0.3 mm. The 2nd and 5th anode layers 102 and 105 were arranged up and down in the center part of the transparent substrate 100, and the diameter was 0.5 mm. The third and sixth anode layers 103 and 106 were arranged vertically on the right side of the transparent substrate 100 and had a diameter of 0.7 mm.

  Two electrode lines 107 and 108 extending in parallel in the vertical direction were connected to the upper ends of the first to third anode layers 101 to 103, respectively. The distances between the two electrode lines 107 and 108 connected to the first to third anode layers 101 to 103 were 10 μm, 30 μm, and 100 μm, respectively. In addition, an electrode line 109 extending by one single line in the vertical direction was connected to the upper ends of the fourth to sixth anode layers 104 to 106. The lengths of the electrode lines 107 and 108 connected to the first to third anode layers 101 to 103 were 4 mm. Similarly, the length of the electrode wire connected to the fourth to sixth anode layers 104 to 106 was 4 mm.

  In each of the left side portion, the central portion, and the right side portion of the transparent substrate 100, one electrode line 110 is provided on the left side of the two anode layers at a distance of about 2 mm from the anode layer and extending vertically from the upper end to the lower end of the transparent substrate 100. Wired with a single wire. Further, two electrode lines 111 and 112 extending in parallel in the vertical direction from the upper end to the lower end of the transparent substrate 100 were wired on the left side of the electrode lines 110 at a position spaced about 2 mm from the electrode lines 110. At this time, the distance between the two parallel electrode lines 111 and 112 was 10 μm, 30 μm, and 100 μm from the left side, respectively.

  The actual measured line width of each of the electrode lines 107 to 112 in Example 1 was 6.0 μm. The electrode lines 107 to 112 and the anode layers 101 to 106 were formed by sputtering ITO and then patterned into a predetermined pattern by photolithography. At this time, the transparent substrate was patterned with a predetermined mask, but the opening width for forming each electrode line was 9 μm. In addition, on the right side of each of the first to sixth anode layers 101 to 106, two electrode lines extending in the horizontal direction in parallel or with one single line were wired, but these electrode lines were not evaluated. It was.

[Example 2]
In Example 2, it implemented like Example 1 except the line width actual value of each electrode line 107-112 having been 7.5 micrometers. In the mask used when forming the electrode lines, the opening width for forming each electrode line was 11 μm.

[Comparative Example 1]
In Comparative Example 1, the measurement was performed in the same manner as in Example 1 except that the measured line width values of the electrode lines 107 to 112 were 8.5 μm. In the mask used when forming the electrode lines, the opening width for forming each electrode line was 13 μm.

[Evaluation method]
The transparent substrates 100 of Examples 1 and 2 and Comparative Example 1 were arranged in the vicinity of the subject imaging position in the viewfinder device of a single-lens reflex camera (product name: * istD, manufactured by Pentax). And an observer was extracted indiscriminately and it was checked whether the observer was able to visually recognize each electrode line. The results are shown in Table 1. In this evaluation, since the transparent substrate 100 was observed from the surface opposite to the surface on which the anode layer and the electrode lines were formed, it was observed with the left and right reversed from the plan view shown in FIG.

※表１の各欄において、左下の数字は電極線が見えた人の割合。右下の数字は電極線の全幅。
※電極線の見えた人の割合が２０％未満の場合は◎、２０％以上５０％未満の場合は○、５０％以上９０％未満の場合は△、９０％以上の場合は×とした。

* In each column of Table 1, the number on the lower left is the percentage of people who saw the electrode wire. The number on the lower right is the full width of the electrode wire.
* When the percentage of people who could see the electrode wire was less than 20%, ◎, when 20% or more and less than 50%, ◯, when 50% or more and less than 90%, △, and when 90% or more, ×.

  As in Comparative Example 1, when the line width of each electrode line is 8.5 mm, in both cases where the electrode line is wired as a single line and where two electrode lines are wired in parallel, the electrodes are formed by more than half of the observers. A line was visible.

  On the other hand, as shown in Example 2, when the line width of the electrode line is 7.5 mm, when the electrode lines are wired as a single line, and when the two are parallel and the separation distance is 100 μm or more, less than half The electrode wire was visible only to the people. Moreover, as shown in Example 1, when the line width of the electrode line is 6.0 mm, when the electrode line is wired as a single line, and when two electrode lines are arranged in parallel, the separation distance is set to 10, 30, 100 μm or more. In any case, the electrode wire was visible only to less than half of the people.

  As is clear from the above evaluation results, in the present invention, it can be understood that when the transparent substrate is arranged in the finder device, the line width of the electrode line is set to 8 μm or less, so that it is difficult for the observer to visually recognize. In addition, when two electrode wires are arranged in parallel, it can be understood that the distance between the two electrode wires is set to 100 μm or more so that it is difficult for an observer to visually recognize the electrode wires.

It is a top view of the finder apparatus of a camera. It is a top view of the light emission part in 1st Embodiment. It is sectional drawing of an electrode wire. It is a top view of the light emission display part in 2nd Embodiment. In Example 1, it is a top view which shows the transparent substrate in which the anode layer and each electrode line were formed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Finder apparatus 16 Light emission display part 17 Finder window 22 Image | photographing visual field area 26A-26L Light emission part 27A-27L Anode line 28 Main cathode line 29A-29E Branch cathode line 30A-30F Connection cathode line 31 Transparent substrate

Claims (5)

A transparent substrate, a light emitting unit provided on the transparent substrate and composed of an organic layer containing an organic light emitting material, and an electrode unit connected to the light emitting unit to supply current to the light emitting unit A finder having an electrode wire wired on the transparent substrate, and when the current is supplied to the light emitting portion, the light emitting portion emits light, and the light emitting display portion that displays by this light emission is observed from the viewfinder window. In the apparatus, the electrode line is a transparent electrode line and has a line width of 8 μm or less, and a plurality of the electrode lines are wired on the transparent substrate, and the plurality of electrode lines are parallel to each other and are 100 μm. Wired apart from above
The electrode wire is made of a cathode line Oyo BiYo polar, between the light emitting portion and the light emitting connected the electrode portions in part, at least of the cathode lines and said anode lines to one of said light emitting portion one is wired are provided in plurality, viewfinder and wherein the observed through the eyepiece. The light-emitting display unit transmits reflected light from a subject and includes a photographing field area used for subject observation,
2. The finder device according to claim 1, wherein the plurality of electrode lines are wired apart from each other by 100 μm or more in parallel in the imaging field of view. The light-emitting display unit transmits reflected light from a subject and includes a photographing field area used for subject observation,
2. The finder apparatus according to claim 1, wherein a line width of the electrode line is 8 [mu] m or less in the photographing visual field region. The light emitting part is configured by sequentially laminating an anode layer, the organic layer, and a cathode layer,
The viewfinder device according to claim 1, wherein at least one of the anode layer and the cathode layer is connected to the plurality of electrode lines.   The finder device is a finder device of a single-lens reflex camera, and the light-emitting display unit is disposed in a vicinity of a focus plate on which an image of the objective lens is formed and on a transverse region intersecting an optical path through which light from a subject passes. The viewfinder device according to claim 1.

Images